MAINTENANCE
Read all of SAFETY and this section before attempting any procedure. Pay particular attention to Notices, Cautions, Warnings and Dangers.
Battery terminal screws should be covered with matching insulation sleeves or take other insulation measures.
Wiring specifications, should be well insulated to prevent overlapping compression and rupture.
5.5 Prevent Loose Connections
If the terminal is not firmly connected to the connection strip, and the degree is light, there will be poor conductivity, causing the
contact part heating, large wire loss, low output voltage, and affect the motor power, so that the mileage is reduced or cannot run
normally.
If the terminal parts are not in contact (most of the faults are in the terminal and the connecting part), the terminal cause large
amount of heat, affect the combination of terminal and sealant. If the situation kept for a long time, it will cause terminal leakage
phenomenon. If in the driving or charging process, the loose connection may produce spark, or even safety accidents.
Electric vehicles have to bear strong vibrations during operation. Therefore, all connections should be reliable. Ensure that no
accidents occur during the driving process.
5.6 Prevent Exposure to the sun
Exposure to the sun will increase temperature of the battery, increase internal pressure of the battery, and force the safety valve
open, increase water loss, and reduce the gas evolution potential of the battery. Therefore, shorten the battery life. It should also
be prevented from charging in the sun.
5.7 Charger Prevention
The charger control must be accurate to have a stable voltage and current, otherwise it will damage the battery. The following are
examples of battery damage caused by chargers.
1)
If output voltage or output maximum current is too low, it will shorten the life of the battery. If used for a long period of time,
it can leads to sulfation of the pole plates and reduction in battery capacity.
2)
If output voltage of charger is too high, it will cause battery overcharge and lose water, which will lead to reduction in
capacity, shortened battery life and, even bulge deformation.
3)
The rectifier effect of charger is poor, ripple coefficient is large, more than 2%, will lead to battery self-discharge, charging
heat and even bulging.
4)
Short circuit problems within the charger, such as short circuit at the output end, damaged or uninstalled diodes prevent
backflow, can cause the charger not to charge. The battery will be severely over-discharged until the end of its life.
If the charger is unstable, which will lead to battery damage.
5)
If the charger is unstable, which will lead to battery damage.
6)
After discharge, the battery should be charged in time, otherwise the battery will be sulfated and its capacity will decrease.
7)
The charging voltage of the special charger for flooded battery is high. Charging the AGM battery will cause
the AGM battery overcharge and swell.
6.Battery Maintenance
6.1Basic Maintenance Knowledge
The service life of battery is not only related to the quality of battery products and the system configuration of electric vehicles, but
also has a great relationship with the use and maintenance of consumers. Therefore, it is necessary to master some basic
knowledge of battery maintenance.
1)
The battery shall not be stored under power loss. If it is used up and idle for a few days before charging, the plate is
prone to sulfuric acid salinization and the capacity will decrease. Battery deficit storage will seriously affect the service life,
the longer the idle time, the more serious the damage.
2)
Regular inspection. If the initial exercise mileage of the new electric car is 60km, there is serious reduction in capacity
within three months, such as 30km below, at this time multimeter can be used to check single voltage of the battery.
Generally, fully charged single cell voltage can reach 6.55V(6V battery), 8.73V(8V battery) and 13.1V(12V battery). If one
of the battery voltage is significantly lower than the other batteries, the backward battery may have internal single block
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