Thermal management system and control method for power battery of a hybrid electric vehicle

Abstract

The invention relates to a power battery thermal management system and a control method of a hybrid electric vehicle. The power battery thermal management system of the hybrid electric vehicle comprises an engine cooling water jacket, a power battery provided with a cooling water path, a three-way electronic valve, a battery radiator and an electronic water pump. According to the power battery thermal management system of the hybrid electric vehicle, the temperature can rapidly rise to a full-power operation range, so as to avoid that a hybrid system cannot be used normally due to continuous low-temperature; and when the battery works normally, in order to avoid the temperature rising to the area of power reduction, a cooling circuit, including a fan, a radiator and an electronic water pump, is used to cool the power battery, so as to maintain the battery in the full-power operation temperature range and maximize the use of hybrid power.

Description

technical field [0001] The invention belongs to the technical field of new energy vehicles, in particular to a heat management system and a control method for a power battery of a hybrid vehicle. Background technique [0002] On the basis of ensuring the cruising range of traditional fuel vehicles, hybrid vehicles can provide additional power output through power batteries and motors or adjust the engine operating area to achieve the purpose of clean driving and fuel consumption. [0003] Hybrid vehicles generally have more than two sets of power systems, including internal combustion engines, power batteries, several dual-purpose motors for power generation and drive, as well as transmission connection devices and control systems that coordinate the output of each power system. [0004] There are different types of power batteries such as ternary and lithium iron phosphate. Different hybrid electric vehicles have different requirements on the charging and discharging perfo...

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to provide a hybrid electric vehicle power battery thermal management system and control method to solve the problem that the thermal management of the current hybrid electric vehicle battery cannot be guaranteed to work in the full power range and the thermal management cost is high

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