System and method for intelligently feeding back health state of battery

Abstract

The invention relates to the technical field of electric vehicle charging, and provides a system for intelligently feeding back the health state of a battery, which comprises a charger and a battery, and is characterized by comprising charging transfer equipment for monitoring the charging state of the battery; the charger is connected with the charging transfer device, and the charging transfer device is connected with the battery; the charging transfer device comprises an MCU control chip, a temperature detection module, a voltage detection module, a current detection module, a DC-DC module and a relay. The MCU control chip is connected with the temperature detection module, the voltage detection module, the current detection module, the DC-DC module and the relay. And the relay is respectively connected with the charger and the battery. According to the system and method for intelligently feeding back the health state of the battery, complete charging and discharging are not conducted on the battery repeatedly, the health state of the battery can be recognized, charging of the battery is controlled, and battery swelling is avoided.

Description

technical field [0001] The invention relates to the technical field of electric vehicle charging, in particular to a system and method for intelligently feeding back the health state of a battery. Background technique [0002] As we all know, with the development of the economy, there are more and more cars in the city, and the rapid increase in the number of cars has directly caused the abnormal congestion of the city's roads. Therefore, more and more people choose more portable electric vehicles as a means of transportation. However, the health of electric vehicle batteries has not received enough attention. Failure to control the charging process under the premise of unhealthy batteries or battery failures will lead to thermal runaway of the batteries, which can easily cause fires and seriously threaten personal safety and social property safety. [0003] In the prior art, the percentage of the current actual capacity of the battery and the nominal capacity is usually ex...

AI Technical Summary

Problems solved by technology

However, the health of electric vehicle batteries has not received enough attention

Failure to control the charging process under the premise of unhealthy batteries or battery failures will lead to thermal runaway of the batteries, which can easily cause fires and seriously threaten personal safety and social property safety.

[0003] In the prior art, the percentage of the current actual capacity of the battery and the nominal capacity is usually expressed as the health status of the battery. In addition, when the battery is charged to the constant voltage stage, the thermal runaway of the battery is caused by the excessive temperature of the charging environment or the loss of water in the battery. Make the charging current drop abnormally, further aggravate the battery heating, and cause the battery temperature to rise sharply, so the capacity percentage cannot fully represent the health status of the battery

However, the battery capacity detection requires the battery to be fully charged and discharged many times. When the actual user uses it, it does not have the conditions for full charge and discharge, and full charge and discharge will cause damage to the battery.

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