电动车蓄电池(EVbattery)

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2024年7月11日发(作者：)

电动车蓄电池（EV battery）

When charging, lead sulfate forms lead oxide, and when

discharged, lead oxide is reduced to lead sulfate. While the

lead sulfate is a very easy crystallization, when lead sulfate

concentration of electrolytic solution in the battery is too

high or the static idle time is too long, will "hold" group,

a small crystal, these small crystals of lead sulfate to attract

around, like a snowball formation of crystalline inert large,

lead sulfate crystallization after charging not only can not

be reduced to be attached to the precipitation of lead oxide,

electrode plate, electrode plate caused a decline in the work

area, this phenomenon is called vulcanization, it is often said

that the aging. At this point the battery will gradually

decrease until it is unusable. When a large amount of lead

sulfate is piled up, the lead particles are attracted to form

a lead branch, and the lead bridging between the positive and

negative plates causes a short circuit of the battery. If the

plate surface or seal molded case has a gap, lead sulfate

crystallization will accumulate in the crevice, and expansion

of tension, the plate broken off or rupture, causing

irreparable physical damage to the battery. Therefore, the main

mechanism leading to the failure and damage of lead-acid

batteries is the unavoidable vulcanization of the battery

itself.

2, the reasons for the special working environment of electric

bicycles

As long as the lead-acid batteries, in the use of the process

will be vulcanized, but the lead-acid battery lead-acid

batteries in other fields than the electric bicycle use has a

longer life, this is because the lead-acid battery electric

bicycle has an easier curing work environment.

Deep discharge

The lead-acid batteries used in automobiles are only

unidirectional discharge at the time of ignition, and the power

generation opportunity is automatically charged to the battery

without causing a deep discharge of the battery. The electric

bicycle can not be charged when riding, often more than 60% of

the depth of discharge, deep discharge when the concentration

of lead sulfate increases, sulfide will be quite serious.

Large current discharge

Electric car 20 kilometers cruising current is generally 4A,

this value has been higher than other areas of battery work

current, and speeding overload electric vehicle work current

is greater. Battery manufacturers have carried out cycle life

tests on 1C charging 70% and 2C discharge 60%. After this kind

of life test, the battery can reach 350 times of charge,

discharge and cycle life, but the actual effect is very

different. This is because the high current work increases the

discharge depth by 50%, and the battery accelerates the

vulcanization. Therefore, the battery life of the electric

tricycle is shorter, because the body of the three wheeled

motorcycle is too heavy, and the working current is above 6A.

Charging and discharging frequency is high

In the field of battery backup power supply, only when blackout

本文标签： 蓄电池电动车