Blogs/News/PSAs

Considering the environmental benefits of 12v lead acid battery, several end-user companies and regional governments have also shifted their focus toward the development and implementation of this product for various applications. Having already established its stance in both the automotive and industrial sectors, the lead-acid battery market in recent years has been gaining exceptional importance, given that the product is extremely reliable and cost-effective for critical power supply applications.

Recently, for instance, the Department of Energy’s Argonne National Laboratory has inked an agreement with 14 members of the Advanced Lead Acid Battery Consortium to leverage advanced X-ray technology to increase the potential of lead batteries for various applications. Reports reveal that by using the X-ray beam technology, the governmental body, and the investigators will be benefited with an in-depth understanding of the chemical interactions inside a dead battery while it charges & discharges. Apparently, this would help the mass commercialization of the lead-acid batteries in electric vehicles, energy utilities, and smartphones, eventually driving lead-acid battery market trends.

Despite the growing investment scenarios in the lead-acid batteries, it is imperative to mention that the global lead-acid battery industry has fallen behind the competing technologies of lithium-ion batteries – that have captured a massive chunk of more than 90% of the overall battery market for stationary energy storage. The high energy density and fast charging potential of lithium-ion batteries have made them a good match and a product of choice in the rapidly proliferating business sphere of electric vehicles and power grid, which has significantly brought down on the costs of these batteries. Indeed, the lithium ion battery market held a valuation of over USD 24 billion in 2016.

Lead acid batteries still have huge potential as they do not pose the same explosion and fire risks as that of the lithium-ion batteries, in turn making them more reliable for the stationary power grid and automotive applications. Owing to the increasing focus toward improved power quality, the stationary lead-acid market, according to reliable estimates, is projected to record a y-o-y growth of more than 5% over 2018-2024. The stationary lead-acid batteries, for the record, find prominent applications in the energy utilities, backup power, renewable energy systems, emergency lighting, railway backup systems, security systems, and O&G explorations.

Speaking along similar lines, another important investment ground for potential stakeholders is the SLI lead-acid battery industry. Given the globally increasing automotive sales, SLI lead-acid batteries are catering to the increasing demand for vehicles with the start-stop functionality and micro-hybrid systems. Accounting for more than USD 25 billion in 2017, this segment of the lead acid battery market is expected to garner lucrative proceeds, owing to its growing prominence as a means to lower carbon emissions in micro-hybrid vehicles. On this note, it is prudent to mention that more than 99% of the passenger cars in Europe, as of 2017, were operated on lead-acid batteries, courtesy - Battery Council International (BCI).

Lead has been further considered as the most effectively recycled commodity metal, and the lead-acid batteries in this regard are the only energy storage systems in the form of batteries that are almost 100% recycled. Reports claim that around 99% of lead batteries are collected & recycled in the United States and Europe. Elaborating further, the Europe lead-acid battery market has, in fact, outpaced the annual sales of more than 9 million units in 2017, and is further expected to propel the regional landscape subject to the growing investments and regulations pertaining to renewable power generation, green transport, and emission reduction targets.

Considering the environmental benefits of these batteries, the renowned giants operating in the global lead-acid battery market space have been indulging in product innovation and technological advancements, in compliance with energy and GHG emission targets, which would, in turn, have a powerful impact on the future trends of the overall industry expansion. From a valuation of USD 50 billion in 2017, a report by Global Market Insights, Inc., forecasts the lead-acid battery market to surpass a remuneration portfolio of USD 75 billion by 2024.

Dongjin group, as one of the most professional ups battery manufacturers in china, Dongjin battery will satisfy customer’s needs perfectly. We sincerely invite and welcome people from all around the world to invest and create more values together.

Lifepo4 batteries are being used more and more widely because of their high safety, especially in combination power batteries. The lifepo4 battery pack manufacturers have seized its development potential and made relevant research. The parameters of lithium iron phosphate batteries are similar to those of other batteries, but four aspects should be paid special attention to: consistency, self-discharge rate, high rate and long life.

1. If there is a protective plate for the lithium 12v battery packwith poor consistency, its capacity will be the lowest according to the bucket principle. This will cause the whole battery pack to not release enough electric energy because of one battery. Over time, the life of the battery pack will be shorter. If the battery pack does not have a protective plate, not only the capacity will be lost, but also the battery pack will have a short life. There may be safety problems such as  overheating and explosion.

2. Self-discharge rate. Because lithium iron phosphate batteries are often used in power batteries, the power consumption is high, which requires that the self-discharge rate of batteries should be less than 2% per month. To achieve this, the above-mentioned consistency requirements are indispensable.

3. Batteries that can withstand high rate charging and discharging have strong ability of fast charging and discharging. For lithium iron phosphate batteries, it is necessary to be able to charge and discharging quickly to meet the requirements of power lithium batteries.

4. Long life; as a general requirement, lithium iron phosphate has 85% capacity after 1000 discharges of 1C and 80% capacity after 3000 discharges. Of course, the standards set by each lifepo4 battery pack manufacturer are different because of the different technology level and materials.

Are you looking for dong jing battery? Dong jing battery 12v 4ah will satisfy customer’s needs perfectly. We sincerely invite and welcome people from all around the world to invest and create more values together.

The analysis of the competition pattern of electric vehicles in the seven major automotive countries in the world shows that Germany is in the leading position at the "technology" level, while China is in the leading position at the "industry" level because of its high level of production and value creation. From the "market" point of view, the seven leading automotive powers in the world have gradually narrowed the gap.

As far as the "industry" index is concerned, China has established a leading position. This benefits from the leading level of Chinese battery manufacturers. Battery manufacturing market continues to grow rapidly, and more than 90% of lithium batteries are produced locally.

In the field of battery manufacturing, the advantages of Chinese battery manufacturers are becoming more and more obvious. From the global share of battery production, Chinese 12v battery manufacturer has been in the leading position. With the expansion of market penetration of long-distance endurance pure electric vehicles, the demand for batteries will increase. Together with these two trends, battery of Dongjin will greatly increase investment to ensure the quality and price of batteries to make consumers more satisfied.

Are you looking for mfq 5c battery? Dongjing storage battery 12v4ah will satisfy customer’s needs perfectly. We sincerely invite and welcome people from all around the world to invest and create more values together.

With the rise of mobile power industry, the competition between a large number of manufacturers is becoming more and more fierce. As a kind of lithium battery, lifepo4 is mainly used in power system, highway, data center, dispatch command center, small and medium-sized enterprise computer room and so on. For example, electric vehicles, military aerospace, rail transit, power tools, lithium UPS and high-speed ETC are suitable for use in multi-system fields because of their excellent structural stability, safety performance and long service life.

At the same time, research and development of lithium iron phosphate batteries are being carried out all over the world. It is also the target of research and development of lifepo4 battery manufacturers China. Compared with lithium cobalt oxide and lithium manganese oxide batteries, lithium iron phosphate batteries have at least seven advantages: high output voltage, higher safety, longer service life, low cost of raw materials, support for rapid charging, wide operating temperature range and environmental protection.

Dongjin lithium power supply uses lifepo4 battery, which has the characteristics of small space, light weight, green link, environmental protection, fast charging, visualization of standby time, intelligent centralized monitoring, long service life and low operating cost. It can customize various specifications individually to meet the needs of customers in various application scenarios.

As one of the most professional ups battery manufacturers in china, Dongjin battery will satisfy customer’s needs perfectly. We sincerely invite and welcome people from all around the world to invest and create more values together.

Lifepo4 batteries are being used more and more widely because of their high safety, especially in combination power batteries. The lifepo4 battery pack manufacturers have seized its development potential and made relevant research. The parameters of lithium iron phosphate batteries are similar to those of other batteries, but four aspects should be paid special attention to: consistency, self-discharge rate, high rate and long life.

1. If there is a protective plate for the lithium battery pack with poor consistency, its capacity will be the lowest according to the bucket principle. This will cause the whole battery pack to not release enough electric energy because of one battery. Over time, the life of the battery pack will be shorter. If the battery pack does not have a protective plate, not only the capacity will be lost, but also the battery pack will have a short life. There may be safety problems such as  overheating and explosion.

2. Self-discharge rate. Because lithium iron phosphate batteries are often used in power batteries, the power consumption is high, which requires that the self-discharge rate of batteries should be less than 2% per month. To achieve this, the above-mentioned consistency requirements are indispensable.

3. Batteries that can withstand high rate charging and discharging have strong ability of fast charging and discharging. For lithium iron phosphate batteries, it is necessary to be able to charge and discharging quickly to meet the requirements of power lithium batteries.

4. Long life; as a general requirement, lithium iron phosphate has 85% capacity after 1000 discharges of 1C and 80% capacity after 3000 discharges. Of course, the standards set by each lifepo4 battery pack manufacturerare different because of the different technology level and materials.

Are you looking for mfq 5c battery? Dongjin storage battery will satisfy customer’s needs perfectly. We sincerely invite and welcome people from all around the world to invest and create more values together.

Implicitly, new energy has been integrated into all aspects of our lives. At present, the use of electric vehicles is more extensive, and electric vehicles are inseparable from battery storage, which provides power guarantee for all electrical systems on vehicles. The degree of electronic and computerized vehicles is becoming more and more powerful, and they rely heavily on storage batteries. Battery poor and power-deficient vehicles will have various failures. If it is serious, it will lead to paralysis of the whole vehicle. All of these require the attention of auto battery factory.

Introduction of New Energy Vehicle Batteries: Lead-acid Batteries and Triple Lithium Batteries

As a mature technology, lead-acid batteries are still the only batteries for electric vehicles that can be mass produced in auto battery factory because of their low cost and high discharge rate. However, the specific energy, specific power and energy density of lead-acid batteries are very low, so it is impossible for electric vehicles powered by lead-acid batteries to have good speed and endurance mileage.

Ternary lithium batteries are lithium batteries using lithium nickel cobalt manganese as cathode materials. Compared with lithium cobalt oxide batteries, they are safe, but the voltage is too low. The energy density is between lithium iron phosphate battery and lithium cobalt 18650 battery. The development trend of new energy automobile batteries in the future is suitable for the weather in the north, and the batteries will be more stable at low temperature.

As one of the most professional ups battery manufacturers in china, Dongjin group will satisfy customer’s needs perfectly. We sincerely invite and welcome people from all around the world to invest and create more values together.

It is important to choose a reputable manufacturer or brand for the purchase of high-quality batteries; to check whether the automotive battery specs meet relevant standards; to check whether batteries are suitable for use in tropical or temperate climates; and to check whether the manufacturer has after-sales service guarantees. Four simple points are very useful. If you don't understand, please listen to our detailed introduction.

How to choose and buy Automobile batteries?

Automotive batteries are very important for controlling motor vehicles. They start the engine and provide extra power to the engine, lights and accessories. In addition, it provides power to the electronic system when the car is not running. When buying new batteries, there are many things to consider, such as cold start current, reserve capacity and group size.

Types of Automotive Battery

There are two main types of automobile battery: low maintenance and maintenance-free. Maintenance-free batteries usually have longer operating life, faster charging speed and longer shelf life. But they are more likely to cause problems because the material of the movable disk falls off. Low maintenance batteries are more suitable for motor vehicles in hot climates. Because the battery is not sealed, water can be added when needed.

Cold Start Current (CCA)

CCA is a measure of battery capacity for starting a motor vehicle in cold weather. Battery cold start current level should meet or exceed the original standard. If you are not sure about the level, you can check the user manual. If you live in a cold area, you'd better buy a high-level cold start current, because more current is needed to start the engine.

Group size

This involves the external dimensions and the location of the battery terminal power. Vehicles usually have different group sizes and are always purchased according to the recommended size of the automobile manufacturer.

Reserve capacity

Reserve capacity refers to the length of time that the battery can run the car when the alternator is not working. Technically, fully charged batteries can operate at 25 amps. If it's less than 10.5 amps (the minimum requirement for running a car), a new battery needs to be replaced. Car batteries with long-term reserve capacity should be purchased because they are needed in emergencies such as breakdown or failure to start.

In addition to the three main aspects of cold start current, reserve capacity and group size, climate conditions, warranty, installation and price should also be taken into account, which can ensure that you buy the best car batteries.

Are you looking for mfq 5c battery? Dongjing storage battery will satisfy customer’s needs perfectly. We sincerely invite and welcome people from all around the world to invest and create more values together.

The analysis of the competition pattern of electric vehicles in the seven major automotive countries in the world shows that Germany is in the leading position at the "technology" level, while China is in the leading position at the "industry" level because of its high level of production and value creation. From the "market" point of view, the seven leading automotive powers in the world have gradually narrowed the gap.

As far as the "industry" index is concerned, China has established a leading position. This benefits from the leading level of Chinese 12v battery manufacturer. Battery manufacturing market continues to grow rapidly, and more than 90% of lithium batteries are produced locally.

In the field of battery manufacturing, the advantages of Chinese battery manufacturers are becoming more and more obvious. From the global share of battery production, Chinese battery manufacturers have been in the leading position. With the expansion of market penetration of long-distance endurance pure electric vehicles, the demand for batteries will increase. Together with these two trends, battery of Dongjin will greatly increase investment to ensure the quality and price of batteries to make consumers more satisfied.

As one of the most professional ups battery manufacturers in china, Dongjing battery will satisfy customer’s needs perfectly. We sincerely invite and welcome people from all around the world to invest and create more values together.

We have 12v lead acid battery for sale! Considering the environmental benefits of lead-acid batteries, several end-user companies and regional governments have also shifted their focus toward the development and implementation of this product for various applications. Having already established its stance in both the automotive and industrial sectors, the lead-acid battery market in recent years has been gaining exceptional importance, given that the product is extremely reliable and cost-effective for critical power supply applications.

Recently, for instance, the Department of Energy’s Argonne National Laboratory has inked an agreement with 14 members of the Advanced Lead Acid Battery Consortium to leverage advanced X-ray technology to increase the potential of lead batteries for various applications. Reports reveal that by using the X-ray beam technology, the governmental body, and the investigators will be benefited with an in-depth understanding of the chemical interactions inside a dead battery while it charges & discharges. Apparently, this would help the mass commercialization of the lead-acid batteries in electric vehicles, energy utilities, and smartphones, eventually driving lead-acid battery market trends.

Despite the growing investment scenarios in the lead-acid batteries, it is imperative to mention that the global lead-acid battery industry has fallen behind the competing technologies of lithium-ion batteries – that have captured a massive chunk of more than 90% of the overall battery market for stationary energy storage. The high energy density and fast charging potential of lithium-ion batteries have made them a good match and a product of choice in the rapidly proliferating business sphere of electric vehicles and power grid, which has significantly brought down on the costs of these batteries. Indeed, the lithium ion battery market held a valuation of over USD 24 billion in 2016.

Lead acid batteries still have huge potential as they do not pose the same explosion and fire risks as that of the lithium-ion batteries, in turn making them more reliable for the stationary power grid and automotive applications. Owing to the increasing focus toward improved power quality, the stationary lead-acid market, according to reliable estimates, is projected to record a y-o-y growth of more than 5% over 2018-2024. The stationary lead-acid batteries, for the record, find prominent applications in the energy utilities, backup power, renewable energy systems, emergency lighting, railway backup systems, security systems, and O&G explorations.

Speaking along similar lines, another important investment ground for potential stakeholders is the SLI lead-acid battery industry. Given the globally increasing automotive sales, SLI lead-acid batteries are catering to the increasing demand for vehicles with the start-stop functionality and micro-hybrid systems. Accounting for more than USD 25 billion in 2017, this segment of the lead acid battery market is expected to garner lucrative proceeds, owing to its growing prominence as a means to lower carbon emissions in micro-hybrid vehicles. On this note, it is prudent to mention that more than 99% of the passenger cars in Europe, as of 2017, were operated on lead-acid batteries, courtesy - Battery Council International (BCI).

Lead has been further considered as the most effectively recycled commodity metal, and the lead-acid batteries in this regard are the only energy storage systems in the form of batteries that are almost 100% recycled. Reports claim that around 99% of lead batteries are collected & recycled in the United States and Europe. Elaborating further, the Europe lead-acid battery market has, in fact, outpaced the annual sales of more than 9 million units in 2017, and is further expected to propel the regional landscape subject to the growing investments and regulations pertaining to renewable power generation, green transport, and emission reduction targets.

Considering the environmental benefits of these batteries, the renowned giants operating in the global lead-acid battery market space have been indulging in product innovation and technological advancements, in compliance with energy and GHG emission targets, which would, in turn, have a powerful impact on the future trends of the overall industry expansion. From a valuation of USD 50 billion in 2017, a report by Global Market Insights, Inc., forecasts the lead-acid battery market to surpass a remuneration portfolio of USD 75 billion by 2024.

Are you looking for mfq 5c battery? Dongjing storage battery will satisfy customer’s needs perfectly. We sincerely invite and welcome people from all around the world to invest and create more values together.

Are you looking for 12v battery pack? Lifepo4 batteries are being used more and more widely because of their high safety, especially in combination power batteries. The lifepo4 battery pack manufacturers have seized its development potential and made relevant research. The parameters of lithium iron phosphate batteries are similar to those of other batteries, but four aspects should be paid special attention to: consistency, self-discharge rate, high rate and long life.

1. If there is a protective plate for the lithium battery pack with poor consistency, its capacity will be the lowest according to the bucket principle. This will cause the whole battery pack to not release enough electric energy because of one battery. Over time, the life of the battery pack will be shorter. If the battery pack does not have a protective plate, not only the capacity will be lost, but also the battery pack will have a short life. There may be safety problems such as  overheating and explosion.

2. Self-discharge rate. Because lithium iron phosphate batteries are often used in power batteries, the power consumption is high, which requires that the self-discharge rate of batteries should be less than 2% per month. To achieve this, the above-mentioned consistency requirements are indispensable.

3. Batteries that can withstand high rate charging and discharging have strong ability of fast charging and discharging. For lithium iron phosphate batteries, it is necessary to be able to charge and discharging quickly to meet the requirements of power lithium batteries.

4. Long life; as a general requirement, lithium iron phosphate has 85% capacity after 1000 discharges of 1C and 80% capacity after 3000 discharges. Of course, the standards set by each lifepo4 battery pack manufacturer are different because of the different technology level and materials.

As one of the most professional ups battery manufacturers in china, Dongjing battery will satisfy customer’s needs perfectly. We sincerely invite and welcome people from all around the world to invest and create more values together.

Lifep04 lithium battery (lifep04) cathode material is considered as one of the most promising cathode materials for lithium ion batteries because of its excellent electrochemical properties.  However, its development has been restricted by its low conductivity and slow diffusion rate of lithium ions. In this paper, the effects of ion doping, carbon coating and nano-materials modification on lithium iron phosphate cathode materials for lithium ion batteries and the existing problems are mainly introduced, and the development trend and key research directions of LiFeP04 lithium battery are prospected.

Because the lithium iron phosphate cathode material has poor conductivity and low lithium ion diffusion coefficient, researchers at home and abroad have done a lot of research in these areas, and achieved some good results. Its modification research mainly includes three aspects: doping method, coating method and nano-materials.

Lithium-ion batteries are widely used in mobile phones, notebook computers, digital cameras, electric vehicles, aerospace, military equipment and other fields because of their high energy density, low self-discharge current, high safety, high current charge-discharge, many cycles and long life.

UPS battery backupUps is mainly to prevent power failure of digital products during long-term use. It is a battery backupUps. It is different from the general battery backupUps,which uses four standard AA alkaline batteries. It needs to be shut down for replacement. UPS battery backupUps should belong to mobile power supply in a broad sense. Generally, 18650 lithium-ion batteries or lithium-polymer batteries are used as battery packs to connect charging wires and adapters to achieve continuous functions when digital products are powerless.

The main advantage of uninterruptible power supply is its uninterrupted power supply capability. When the AC input of municipal power is normal, UPS rectifies AC to DC, and then inverts DC to stable AC without impurities, which is used for the later load. Once the AC input of city power is abnormal, such as under-voltage or power failure or abnormal frequency, UPS will turn on the energy-storage battery backupUps, and the rectifier circuit of UPS will turn off. Correspondingly, the DC current of the battery will be inverted into a stable AC without impurities, which will continue to be used for the later load. This is the origin of uninterrupted power supply capability of UPS.

Of course, the uninterrupted power supply time of UPS is not unlimited, which is limited by the storage energy of the battery itself. What if AC power failure occurs? So in the precious time of UPS battery power supply, what you need to do is to quickly restore AC, such as starting standby AC circuit, starting oil engine power generation. If there is no other solution, you can only urgently save the results of labor, and wait for AC to return to normal before continuing.

Rechargeable batteries are rechargeable batteries with limited number of charges, which are used in conjunction with chargers. When its electricity is used up, the current is applied to it. It can convert electrical energy into chemical energy. When the electricity is turned on, the battery converts chemical energy into electrical energy through chemical reaction. In this way, charging-discharging-charging-discharging, it can be recycled.

1. The advantages of rechargeable batteries are that it is economical, and environmentally friendly. It has enough electricity. It is suitable for high-power, long-term use electrical appliances, such as walkman, electric toys and so on.

2. The voltage of rechargeable batteries is lower than that of disposable batteries of the same type. AA batteries (No. 5 charging) are 1.2 volts, and 9V charging batteries are actually 8.4 volts. Now the average number of charges can be about 1000 times.

3. Its cycle life is long. It can charge and discharge more than 200 times. Some rechargeable batteries have higher load than most disposable batteries.

Types of rechargeable batteries 

At present, there are only five kinds: nickel and cadmium, nickel and hydrogen, lithium ion, lead storage, iron and lithium.

1. Nickel-cadmium batteries (Ni-Cd)

Characteristic: It has memory effect and small capacity.

2. Nickel-hydrogen battery (Ni-MH)

Characteristics: It has small memory effect and large capacity. At present, the maximum capacity of domestic No. 5 battery is about 2500 mAh.

3. Lithium-ion batteries (Li-lon)

Characteristic: It has no memory effect, is very thin and has large capacity. Its weight is 30%-40% lighter than that of Ni-MH battery, and its capacity is 60% higher than that of Ni-MH battery. But it can't stand overcharging. If it is overcharged, the temperature will be too high to destroy the structure=> explosion. The electromotive force is 3.6V and 3.7V because of different electrode materials. The performance of lithium batteries is the best of all kinds of batteries. They are small in size, light in weight and large in capacity. It is widely used in digital cameras, laptops, mobile phones and other electronic products.

4. Li-polymer battery

Characteristic: The improved lithium battery has no battery liquid, but can be made into various shapes by using polymer electrolyte, which is more stable than lithium battery.

5. Lead-acid battery (Sealed)

Characteristic: It is a general car battery, which is connected in series with 6 2V to 12V. Water-free batteries have a life of up to 10 years, but their volume and capacity are the largest.

Twenty-four years have passed. Time flies, day and night changes. No matter how the situation changes, the concept of "benefiting the people with the best batteries, touching clients with the best service" remains unchanged. Only battery of dongjin group an do this.

Looking at the history of the battery industry, you will find only powerful enterprises remain in dozens of brands in in a new round of reshuffle. Dongjin Group, the veteran batteries in this field shows its outstanding quality strength every time. In 2012, dongjin group invested 500 million yuan in establishing Jiangxi Dongjin New Energy Co., Ltd. in Ji'an, Jiangxi Province. It played a leading role in both brand influence and productivity improvement. In addition to focusing on building domestic sales channels, we should formulate a differentiation strategy, focus on the global market, and lay out the international market. Our products are exported to more than 50 countries and regions in Israel, Afghanistan, North America, South America, Asia, Middle East and South Africa. Among them, "Dongjin" and "Jinfeng" brands have become the leading brands in the local market. Compared with the same type of batteries, they occupy an absolute market share.

Under the new situation, new changes and adjustments have taken place in the battery energy industry. Dongjin Group, which is well versed in this theory, has been adapting to the trend of development, constantly adjusting its own structure and formulating a two-step marketing strategy: In the domestic market, we should set up professional R&D, production and sales teams, introduce modern equipment, increase control over product quality and technology R&D, and stabilize the domestic market with the advantages of quality and service.

The international market is based on the changes of the global new energy environment and the objective environment of oversupply in the domestic market. Top leaders of Dongjin Group decided to continue to invest more and build the largest battery production base in Bangladesh in December. At that time, the group's daily capacity of nearly 30,000 batteries can be completely digested by foreign trade orders. Domestic and foreign markets are combined to complement each other. It plays back into the attack and defend the action. This makes Dongjin present a unique brand image.

According to the senior management of the group, on the basis of its original strength, Dongjin Group will set up a brand new team, marketing model, product system and nanny-style service system at the end of 2016 to return to the domestic and foreign markets and re-establish the brand value of the enterprise. With the new situation, new environment and new changes, battery of Dongjin group is showing its strong vitality.

Many types of adapters can be used to charge lithium-ion batteries and power the system, and the electrical specifications of each rechargeable lithium battery are usually different. This requires system designers to build portable devices, which meet the safety and reliability requirements when using different adapters. Enhance robust security performance. Dongjin fully integrates input overvoltage, input overcurrent, battery overvoltage and reverse input polarity protection, which can significantly improve the safety of battery power supply system.

The ultimate purpose of parallel lithium battery of rechargeable lithium batteries is to increase capacity. Therefore, parallel lithium battery has some different characteristics in design compared with single lithium batteries, mainly reflected in the consistency of charging current design and parallel batteries.

Generally speaking, the characteristics of parallel lithium batteries are as follows: the voltage is constant, the capacity of batteries is added together, the internal resistance is reduced, and the power supply time is prolonged. The core content of parallel charging is the magnitude and function of parallel current. According to the theory of parallel connection, the trunk current equals the sum of all branch currents. Therefore, in order to achieve the same charging efficiency as a single lithium battery, the charging current should be the sum of the current of N lithium batteries.

Under the formula of I = U / R, this design is reasonable. However, the internal resistance of parallel batteries will also change. According to the formula of parallel internal resistance, the total internal resistance of two parallel lithium batteries is equal to the ratio of the product of internal resistance of two batteries to the sum of their internal resistance, and the parallel resistance will decrease with the increase of the number of parallel batteries. Therefore, the efficiency of parallel charging of lithium batteries can be realized on the basis that the current of lithium batteries in parallel is less than the sum of the current of N lithium batteries in parallel.

Generally, after parallel connection of lithium batteries, there will be a charge protection chip to protect the lithium batteries. As one of the excellent manufacturers of rechargeable lithium batteries, battery of Dongjin has fully considered the changes of lithium batteries after parallel connection, and also designed the current and selected the batteries according to the above requirements. Therefore, users need to charge lithium batteries on time according to the instructions of parallel lithium batteries, so as to avoid possible damage to batteries caused by incorrect charging methods.

The purpose of developing high technology is to make it serve human better. Lithium-ion batteries have developed rapidly since 1990 because of their excellent performance and they have been widely used in society. Lithium-ion batteries have rapidly occupied many fields with incomparable advantages over other batteries. As we all know, mobile phones, laptops, small cameras and so on all involve the application and development prospect of lithium battery, and more and more countries use the batteries for military purposes. The application shows that lithium battery is an ideal small green power supply.

The application and development prospect of lithium battery will expand rapidly in the next five years. The application and development prospect of lithium battery is mainly divided into three parts: consumer electronic products, electric vehicles and industrial energy storage. We can find that application focus of lithium batteries is at the stage of development from small batteries market of consumer electronic products to power batteries market of electric vehicles and industrial energy storage. The order is: consumer electronic products market electric vehicles market industrial energy storage market.

In emerging markets such as tablets, electric vehicles (PHEV + EV) and home energy storage, some lithium-ion batteries are the best choice, while others are the first choice. In the market of power grid energy storage which has not yet arisen, the related demonstration operation projects have been carried out at present.

Lithium-ion batteries are gaining ground in the market mainly because of their rapidly declining prices. In terms of performance, lithium-ion batteries are superior to lead-acid batteries, nickel-cadmium batteries, nickel-hydrogen batteries and other major competitors. Through the advantages of performance, lithium-ion batteries gradually expand the market scale. The growth of demand directly leads to the expansion of production capacity and the reduction of manufacturing costs, which in turn stimulates further growth of market demand. In this way, the lithium battery application industry has embarked on a virtuous cycle of development.

The lithium battery advantages are large capacity and high working voltage. The capacity is twice as large as that of the same nickel-cadmium battery, which is more suitable for long-term communication. The voltage of lithium ion is 3.6v, which is three times as high as that of nickel-cadmium and nickel-hydrogen batteries. Charge retention ability is strong, allowing a wide range of operating temperature. After 30 days of storage in open circuit mode at (20 +5) (?) C, the discharge capacity of lithium-ion batteries at room temperature is more than 85% of the rated capacity. Lithium-ion batteries have excellent discharge performance at high and low temperatures, and can work at - 20 ~+55 (?) C. The discharge performance at high temperature is better than that of other batteries.

Long cycle life. Carbon anode is used in lithium-ion batteries. During charging and discharging, the carbon anode will not produce dendritic lithium, which can avoid damage to the inner dendritic lithium short-circuit ears of batteries. After 1200 consecutive charges and discharges, the capacity of the battery is still not less than 60% of the rated value, which is much higher than other types of batteries and has long-term economic use.

It has high safety and can charge and discharge safely and quickly. Compared with metal lithium batteries, lithium-ion batteries have the characteristics of short circuit resistance, overcharge resistance, overdischarge resistance, impact resistance (10 kg weight falling freely from 1 m height), anti-vibration, shooting, needling (penetration), non-fire and non-explosion. Because its anode uses special carbon electrode instead of metal lithium electrode, it allows rapid discharge and can charge and discharge at a charge rate of 1c. So the security performance is greatly improved.

No environmental pollution. Batteries do not contain harmful substances such as cadmium, lead and mercury, which is a clean "green" chemical energy without memory effect. It can be repeatedly charged and discharged at any time. Especially in emergencies, it shows excellent performance.

It has small volume, light weight and high specific energy. Usually, the specific energy of lithium ion batteries can be more than twice that of nickel-cadmium batteries. Compared with the same capacity nickel-cadmium batteries, the volume and weight of lithium ion batteries can be reduced by 30% and 50%, which is conducive to the miniaturization and lightweight of convenient electronic equipment.

The analysis of the competition pattern of electric vehicles in the seven major automotive countries in the world shows that Germany is in the leading position at the "technology" level, while China is in the leading position at the "industry" level because of its high level of production and value creation. From the "market" point of view, the seven leading automotive powers in the world have gradually narrowed the gap.

As far as the "industry" index is concerned, China has established a leading position. This benefits from the leading level of Chinese battery manufacturers. Battery manufacturing market continues to grow rapidly, and more than 90% of lithium batteries are produced locally.

In the field of battery manufacturing, the advantages of Chinese battery manufacturers are becoming more and more obvious. From the global share of battery production, Chinese battery manufacturers have been in the leading position. With the expansion of market penetration of long-distance endurance pure electric vehicles, the demand for batteries will increase. Together with these two trends, battery of Dongjin will greatly increase investment to ensure the quality and price of batteries to make consumers more satisfied.