Advantages and disadvantages of iron-lithium batteries

The main advantages of lithium iron phosphate batteries are:

1. High efficiency output: high current continuous discharge can reach 10C, and instantaneous pulse discharge (10S) can reach 20C.

2. Good high temperature performance: When the external temperature is 65°C, the internal temperature reaches 95°C, and the temperature at the end of battery discharge can reach 160°C.

3. If the battery is damaged internally or externally, it will not burn or explode and is safe.

4. Very long lifespan. After 500 charge cycles, the discharge capacity is still above 95%.

5. There is no damage from zero volt discharge.

The main disadvantages of lithium iron phosphate batteries are:

1. During the sintering process when preparing lithium iron phosphate, iron oxide is reduced to elemental iron in a red atmosphereuctrice at high temperature. .possibility.

2. Lithium iron phosphate has some performance defects, such as low tapping density and low packing density, which results in low energy density of lithium-ion batteries.

3. The material preparation cost and battery manufacturing cost are high, the battery efficiency is low, and the consistency is poor.

4. Product consistency is poor. At present, there is no lithium iron phosphate material factory in China that can solve this problem.

Detailed information:

Main applications of lithium iron phosphate batteries:

1. : Buses, electric vehicles, tourist buses and hybrid vehicles, etc. ;

2. Light electric vehicles: electric bicycles, vogolf carts, small flat battery vehicles, forklifts, cleaning vehicles, electric wheelchairs, etc. ;

3. Power tools: power drills, power saws, lawn mowers, etc. ;

4. Energy storage equipment for solar and wind power generation;

5. UPS and emergency lights, warning lights and miner's lamps (the best safety);

The performance of lithium-ion batteries mainly depends on the materials of the positive and negative electrodes. Lithium iron phosphate as a lithium battery material has only appeared in recent years. The domestic development of large capacity lithium iron phosphate. the batteries were in July 2005. moon. Its safety performance and durationlifespan are unmatched by other materials, and they are also the most important technical indicators of power batteries.

Baidu Encyclopedia - Lithium iron phosphate battery

What is the difference between lithium manganate and ternary lithium battery

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1. Advantages:

1. Improved safety performance: The P-O bond in lithium iron phosphate crystal is stable and not easy to decompose even at high temperatures or overcharge, it will not collapse and generate heat or will form strong oxidizing substances like lithium cobalt oxide, so it provides good safety.

2. Improved service life: Lithium iron phosphate battery refers to a lithium-ion battery using lithium iron phosphate as the positive electrode material. The lifespan of long-life lead-acid batteries is about 300 timesand the maximum is 500 times, while the lifespan of lithium iron phosphate batteries reaches more than 2000 times, and can reach 2000 times with standard charging (5 hours). rate).

2. Disadvantages:

1. The plug density of the positive electrode of the lithium iron phosphate battery is small, and the density is generally around 0.8 to 1.3. Big size.

2. During the sintering process when preparing lithium iron phosphate, iron oxide can be reduced to elemental iron in a high temperature reducing atmosphere. Elemental iron can cause micro-short circuits in the battery.

Principle and structure of lithium iron phosphate battery:

1. Commercial lithium iron phosphate battery generally consists of the following parts: positive electrode material (lithium iron phosphate), negative electrode material (graphite), as well as aluminum foil(positive), copper foil (negative) as positive and negative current collectors, and positive and negative electrode tabs (i.e. current collector outputs).

2. There are also separators, electrolytes, aluminum-plastic films and battery protection plates. It adopts winding type and is made into 18650 type battery.

3. The principle is that during discharge, Li ions migrate from the negative electrode to the positive electrode; and during charging, Li ions migrate from the positive electrode to the negative electrode. .

Ranking the top ten lithium batteries for electric vehicles

Pacific Automotive Network lithium manganate battery: The advantage of lithium manganate battery is that it has a good performance rate and is relatively easy to prepare, at lower cost. The disadvantage is that the dissolution of manganese results in poor performance.nces at high temperature and cycle performance. By doping aluminum and sintering granulation, the performance and high temperature cycle have been significantly improved, which can basically meet the actual use. Ternary lithium battery: The cathode material of lithium battery is lithium-nickel-cobalt-manganate or lithium-nickel-cobalt-aluminate ternary cathode material.

1. Different properties

1. Lithium iron phosphate battery: A lithium-ion battery using lithium iron phosphate as the positive electrode material.

2. Ternary lithium battery: The cathode material of lithium battery is lithium-nickel-cobalt or lithium-nickel-cobalt-aluminate ternary cathode material.

2. The main materials are different

1. Lithium iron phosphate battery: The cathode materials of lithium ion batteries mainly include li acidthium-cobalt, lithium-manganese acid, lithium-nickel acid, ternary materials and phosphoric acid Lithium iron, etc. Lithium-cobalt oxide is the cathode material of most lithium-ion batteries.

2. Ternary lithium battery: The ternary composite cathode material is composed of nickel salt, cobalt salt and manganese salt as raw materials. The proportion of nickel, cobalt and manganese can be adjusted according to actual needs. .

3. Different applications

1. Lithium iron phosphate battery: large electric vehicles: buses, electric cars, sightseeing buses and light electric vehicles: electric bicycles, golf carts, small flat battery carts, forklifts, cleaning trucks, electric wheelchairs, etc. ; power tools: power drills, chainsaws, lawn mowers, etc.

2. Ternary lithium battery: widely used inmobile and wireless electronic equipment, power tools, hybrid and electric vehicles and other fields.

(Photo/Text/Photo: Pacific Automotive Network Q&A)

Top ten electric vehicle battery brands include Chaowei Battery, Tian Neng Battery, Xupai Battery, Haibao Battery, Jinrichao Battery, Lihan Battery, Nandu Battery, Shengming Battery, Jingqiu Battery, Huafu Battery.

1. Chaowei Battery

Chaowei Group was founded in 1998 and is located in the emerging industrial zone of Zhicheng City, Changxing County, Zhejiang Province. National high-tech enterprise, national enterprise without product quality inspection, key industrial enterprise of Huzhou, city leading manufacturing enterprise, advantageous and characteristic enterprise of the city, executive director of National Industry Associationbattery industry, member of the National Electrical Industry Association. and vice-president of the Provincial Battery Industry Association.

2. Tianneng Battery

Tianneng Group was established in 1986 and is located in the hinterland of the Yangtze River Delta - "China Green Energy Center". Changxing, Zhejiang, mainly focuses on the manufacturing of environmentally friendly power batteries for electric vehicles, integrating R&D, production and sales of new energy nickel-metal hydride, lithium-ion batteries, wind power, power batteries. solar energy storage and renewable lead resources. recovery and recycling. It is currently the leading green energy manufacturer in China.

3. Xupai Battery

Xupai Battery - the world's leading brand of high-quality electric vehicle batteries and one of the three largest battery supplierse electric vehicles in the world. As a leading enterprise in the production of electric vehicle batteries, Xupai has specialized in battery R&D and production for more than 20 years.

4. Haibao Battery

Shanghai Haibao Special Power Co., Ltd. is a battery manufacturer with a long history. It was formerly known as Shanghai Qiyi. Battery Factory and was born in the 1960s. Shanghai Qiyi Battery Factory has been engaged in the in-depth research and development of electric vehicle batteries for a long time. In 1993, it founded Shanghai Haibao Special Power Co., Ltd., becoming one of the first electric vehicle battery R&D enterprises in China. .

5. Jinrichao Battery

Jiangxi Hetian New Energy Technology Co., Ltd. was founded in 2005 and is headquartered in Yifeng County, Jiangxi Province, covering an areahere of 300 square meters mu. After more than ten years of rapid development, the company has grown into a large-scale enterprise specializing in the research, development and manufacturing of electric vehicle batteries and plates.

6. Liban Battery

Zhejiang Liban Group is a company dedicated to the production of electric batteries, solar batteries, lithium batteries and lead-acid batteries. Energy-saving and environmentally friendly batteries for electric vehicles, passenger cars and golf carts, technology import and export.A large-scale modern high-tech enterprise group whose main business is that its products are non-polluting, more reliable in terms of safety and better in terms of quality-price ratio.

7. Nandu Battery

Hangzhou Nandu Battery Co., Ltd. was founded in December 1997. It is a subsidiary ofThe Zhejiang Nandu Power Supply Co. (hereinafter referred to as: Nandu A wholly-owned subsidiary of Power Supply), it is located at No. 3, Zhenxing West Road, Linping, Yuhang District, Hangzhou City. has a factory area of ​​50,000 square meters. It mainly produces valve-regulated batteries, lithium-ion batteries and related materials, with an annual production capacity of 2.4 million KVAH and lithium-ion battery. 120MWH battery.

8. Shengming Battery

Shengming Battery is a brand of Jiangxi Tai Electric Co., Ltd. Jiangxi Tai Electric Co., Ltd. was established in November 2016. The company is located in Yifeng County, China's largest lead-acid battery production base, covering an area of ​​more than 300 acres and a total construction area of ​​more than 100,000 square meters.

9. Jingqiu Battery

Jingqiu Battery is a subsidiary of Ji Groupngjiu. The main body of the group consists of three main bases: Jiangxi Jingjiu Power Technology Co., Ltd., Jingjiu Power Supply (Jiujiang) Co., Ltd. and Jingjiu Power Supply (Yichun) Co., Ltd.

10. Huafu Battery

Jiangsu Huafu Holding Group, founded in 1990, is a cross-regional and cross-industry high-tech group and enterprise. It has formed an industrial structure that is developing in multiple sectors such as new energy, solar components, batteries, logistics, trade, scientific research and development, etc. Its headquarters is in Gaoyou City, Jiangsu Province, known as the "Eastern Postal Capital". ".