Heating system for cylindrical battery module, and battery module

Abstract

The invention discloses a heating system for a cylindrical battery module. The heating system comprises at least one heating system connected with a battery management system, wherein the heating system comprises an insulating fixed plate provided with at least one accommodating hole, wherein at least one or more parallel PTC heating elements for heating the battery module and detecting the battery module temperature are arranged in each accommodating hole; metal electrode plates are arranged on the two side surfaces of each PTC heating element; pins are arranged on the left and right sides of each metal electrode plate; the pins are provided with inserting pins; the inserting pins are arranged on the surface of the insulating fixed plate; the heating system is connected with the battery management system through the inserting pins via a wire; heat conducting silica gel is arranged on the outer side surfaces of the metal electrode plates separately; and more than two concave parts are arranged on the outer side surface of each piece of the heat conducting silica gel. The invention also provides the battery module, which comprises the heating system. Compared with the prior art, another temperature sensor is not required, so that setting of parts is reduced while the production cost is lowered.

Description

technical field [0001] The invention relates to a power battery, in particular to a heating system and a battery module for a cylindrical battery module used in pure electric vehicles or hybrid vehicles and electric energy storage equipment. Background technique [0002] At present, more and more pure electric and gasoline-electric hybrid vehicles appear in our lives. Most of the existing and future pure electric and gasoline-electric hybrid vehicles use lithium-ion power batteries as the power source, and lithium-ion batteries are used in high, The performance, reliability and life at low temperature are significantly lower than those at normal temperature. When the battery module is used in a low temperature environment, a heating system must be used to heat the battery module so that the battery core reaches an appropriate temperature before starting charging and discharging. After a lithium-ion battery module has been used for a period of time, each battery cell will ag...

AI Technical Summary

Problems solved by technology

[0015] The purpose of the present invention is to provide a heating system for cylindrical battery modules and battery modules. The technical problem to be solved is to make heating more uniform and fast, improve heating efficiency, shorten heating time, reduce energy consumption, and make battery modules Safer and more reliable, the battery management system obtains the current operating temperature of each battery cell in the battery module in real time by reading the resistance value of the PTC heating element, eliminating the need to use other temperature sensors, reducing the number of components and production costs

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