What kind of electric car battery works well?

These brands of electric vehicles have good batteries: Tianneng, Wei Chao, Haibao, Shengyang and Xinshengneng.

1, Tianneng

Tianneng Power is the largest manufacturer of power batteries in China, mainly engaged in the research, development, manufacture and sales of power batteries such as lead acid, nickel hydrogen and lithium ion, electronic appliances for electric vehicles, and wind energy and solar energy storage batteries. Tianneng Electric Power has been successively rated as one of the top ten enterprises with national industrial benefits, the top 500 private enterprises, the national advanced collective of light industry, the top 100 manufacturing enterprises in Zhejiang Province and the top 10 potential enterprises in Forbes China in 2008.

2. Wei Chao

Established in 1998, Wei Chao Power Supply Co., Ltd. is a national key high-tech enterprise, a national product quality inspection-free enterprise, a key industrial enterprise in Huzhou, a leading manufacturing enterprise in the city, an enterprise with advantages and characteristics in the city, an executive director of the National Battery Industry Association, a member of the National Electrical Appliance Industry Association, a vice-president unit of the Provincial Battery Industry Association, and a Forbes list of "China Potential 100" in 2005.

3.haibao

Haibao brand lead-acid battery products for electric bicycles have the advantages of large capacity, high specific energy, good low-temperature performance, strong deep discharge recovery performance and long cycle life. Its performance index is among the best in the international similar products, and it has been designated and selected by many well-known domestic electric vehicle supporting manufacturers.

4. Shengyang

Shandong Shengyang Power Supply Co., Ltd. is a national high-tech enterprise. The company was established in 199 1 1 and listed on the small and medium-sized board of Shenzhen Stock Exchange on May 6, 20 14. It is one of the earliest enterprises in China to develop and manufacture valve-regulated sealed lead-acid batteries, and the first enterprise in China lead-acid battery industry to pass the export inspection-free audit.

5. New energy demand

Founded in 2003, New Need Energy Power has been selected (named) as a national inspection-free product, a well-known trademark in China, an award-winning brand of home appliances going to the countryside, a battery brand that consumers like all over the country, and the executive director of China Low-carbon Industry Alliance. It owns subsidiaries such as Changxing Tiandu Power Supply, Jiangsu Jinchangxing Power Supply, Xinyi Shenghua Power Supply and Jiangsu Jinjie Electronics, realizing a complete industrial chain of battery assembly, plate production and pulse rechargeable battery manufacturing. There are 70,000 batteries for electric vehicles per day, and its Jiangsu Jinchangxing power supply passed the first batch of acceptance by the Ministry of Environmental Protection on 20 14.

Extended data:

1, deep discharge

Lead-acid batteries for automobiles only discharge in one direction when ignited. After ignition, the generator will automatically charge the battery without causing deep discharge of the battery. However, electric bicycles can't be charged when riding, and the deep discharge often exceeds 60%. When the concentration of lead sulfate increases during deep discharge, the vulcanization will be quite serious.

2, large current discharge

The 20-kilometer endurance current of electric vehicles is generally 4A, which is already higher than the working current of batteries in other fields, and the working current of overspeed and overload electric vehicles is even greater. Battery manufacturers have conducted a cycle life test of 1C charging 70% and 2C discharging 60%. After this life test, many batteries can reach the life of 350 charge and discharge cycles, but the effect in actual use is far from perfect. This is because the high current operation increases the discharge depth by 50%, and the battery will accelerate the vulcanization.

4. Short-term charging

Because the electric bicycle is a means of transportation, there is not much time for charging. In order to charge 36 volts or 48 volts for 20 ampere-hours in 8 hours, it is necessary to increase the charging voltage (generally 2.7~2.9 volts for a single battery). When the charging voltage exceeds the oxygen evolution voltage (2.35 volts) or hydrogen evolution voltage (2.42 volts) of the single battery, the battery will open the valve and exhaust due to excessive oxygen evolution, resulting in water loss.

5. Can't charge in time after discharge.

As a means of transportation, electric bicycle is completely separated from charging and discharging, so it is difficult to charge it in time after discharging. However, if a large amount of lead sulfate formed after discharge is not charged for more than half an hour, it will be reduced to lead oxide, which will sulfide and form crystals.

6, correctly grasp the charging time

During use, the charging time should be accurately grasped according to the actual situation. Refer to the usual frequency and mileage, and also pay attention to the capacity description provided by the battery manufacturer. As well as the performance of the matching charger, the size of charging current and other parameters. Generally, the battery is charged at night, and the average charging time is about 8 hours. If it is lightly discharged (short mileage after charging), the battery will be fully charged soon, and it will be overcharged if it continues to charge, which will lead to water loss and heat loss of the battery and reduce its life.

7. Prevent exposure to the sun

Electric cars are strictly forbidden to be exposed to the sun. The high temperature environment will increase the internal pressure of the battery, forcing the battery pressure limiting valve to open automatically, which directly leads to the increase of battery water loss. Too much water loss in the battery will inevitably lead to the decline of battery activity, accelerate the softening of the electrode plate, and cause fatal injuries such as heating, bulging and deformation of the shell during charging.