Temperature acquisition device of battery management system of micro electric passenger vehicle

Abstract

The invention discloses a temperature acquisition device of a battery management system of a micro electric passenger vehicle. The device comprises a plurality of lithium batteries, heat conduction metal sheets, temperature sensors, a flat cable, a wireless transceiving module and the battery management system, and is characterized in that the plurality of lithium batteries form a lithium batterypack; each lithium battery is attached with a heat conduction metal sheet; a temperature sensor is arranged on one surface, far away from each lithium battery, of each heat conduction metal sheet; thetemperature sensors are connected to the flat cable through wires; the flat cable is electrically connected with the wireless transceiving module; and the wireless transceiving module is connected with the battery management system in a wireless mode. The heat conduction metal sheets are adopted as heat conduction media, so that the service lives of the temperature sensors can be prolonged to themaximum extent while the temperature acquisition precision is ensured; and in addition, due to the arrangement of the wireless transceiving module, the mounting of the whole device is not limited bythe wires.

Description

technical field [0001] The invention belongs to the field of electronic instruments, in particular to a temperature acquisition device for a battery management system of a miniature electric passenger car. Background technique [0002] Battery management system (BATTERY MANAGEMENT SYSTEM), electric vehicle battery management system (BMS) is an important link connecting vehicle power batteries and electric vehicles, its main functions include: real-time monitoring of battery physical parameters; battery status estimation; online diagnosis and early warning; charging , discharge and precharge control; balance management and thermal management, etc. [0003] The temperature is one of the most important physical parameters of the battery. Once the battery temperature is overheated, it will explode, which is very dangerous. The current battery temperature acquisition device uses a patch-type temperature sensor directly attached to the battery surface, which has low detection accu...

AI Technical Summary

Problems solved by technology

[0003] The temperature is one of the most important physical parameters of the battery. Once the battery temperature is overheated, it will explode, which is very dangerous. The current battery temperature acquisition device uses a patch-type temperature sensor directly attached to the battery surface, which has low detection accuracy and is easy to damage.

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