Method for charging battery of electric road vehicle

Abstract

The invention discloses a method for charging a battery of an electric road vehicle. The method comprises the following steps of: (1) pre-charging; (2) A-period constant current charging; (3) B-period constant current charging; (4) constant voltage charging; (5) double-threshold charging; and (6) float charging, wherein the base number of the charging environment temperature is 25 DEG C, current and voltage in the whole charging process are adjusted in inverse proportion to the environment temperature, a current adjustment coefficient is 30 to 80 mA / DEG C, a voltage adjustment coefficient in the step (6) is 3 to 4 mV / monomer.DEG C, and a voltage adjustment coefficient in other steps is 5 to 6 mV / monomer.DEG C. By adjusting charging parameters under different temperature conditions, a charging effect of the battery at different temperatures is ensured, and the service life of the battery is prolonged.

Description

Technical field

[0001] The invention involves the field of battery storage, and specifically involves electric road vehicle battery charging methods. Background technique

[0002] Electric road vehicle batteries are applied to low -speed electric vehicles. As a power energy storage device, it is generally connected to 48V to 96V for use.Due to the greater impact of temperature on the battery chemistry, the battery's rechargeable acceptance capabilities under different temperature conditions are different. The battery temperature in high temperature environments is fast, the water loss is fast, the battery resistance in the low temperature environment is large, and the charging voltage is easy to increase.Therefore, by adjusting charging parameters under different temperature conditions, it is particularly important to ensure that the charging effect of batteries at different temperatures is particularly important. Invention content

[0003] The technical problem to be solved by ...