Lithium ion battery pack capable of working in low-temperature environment

Abstract

The invention discloses a lithium ion battery pack capable of working in a low-temperature environment, and belongs to the field of lithium ion batteries. For the problems, the adopted technical scheme is as follows: the lithium ion battery pack capable of working in the low-temperature environment comprises a battery body, a heating film and a BMS battery manager connected to the heating film, wherein the heating film surrounds the side surface of the battery body and is used for heating the battery body; the BMS battery manager senses the temperature of the battery body through a temperaturesensor located on one side of the battery body; and the BMS battery manager opens or closes the heating film through a temperature signal detected by the temperature sensor. The heating film with theheating function surrounds the side surface of the battery body, the area of the side surface of the battery body is large, the heating is faster and more uniform, the rapid heating is realized, andthe heating film occupies a small space, and the installation is very convenient; and the BMS battery manager plays a role in monitoring and controlling the opening or closing of the heating film, sothat the heating film can be in a stable heating temperature range.

Description

technical field [0001] The invention belongs to the field of lithium-ion batteries, in particular to a lithium-ion battery pack that can work in a low-temperature environment. Background technique [0002] At present, lithium-ion batteries have been widely used in various industries due to their advantages of high voltage, large capacity, small size, and light weight, especially in the communication industry, especially as communication batteries. However, lithium-ion batteries are sensitive to the temperature of the operating environment, especially when the charging and discharging efficiency is low below 0°C, so charging and discharging below 0°C has certain safety hazards. Lithium-ion battery packs used as communication batteries are usually used in outdoor environments, but when used in outdoor environments in winter, especially in northern outdoor environments, the low temperature will lead to low charging and discharging efficiency of lithium-ion battery packs, which ...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem that the existing lithium ion battery pack cannot be charged and discharged in a low temperature environment due to the influence of low temperature, the present invention provides a lithium ion battery pack that can work in a low temperature environment, and a heating film is provided inside it to provide heat so that the lithium ion battery The battery is not affected by low temperature and can be used in a low temperature environment

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