A thermal management control method for a power battery

Abstract

The invention belongs to the field of electric vehicle power battery systems, and discloses a power battery thermal management control method. The thermal management control method of the power battery includes: the vehicle controller judges the working condition of the vehicle, and detects the thermal management working condition of the vehicle when the working condition of the vehicle is a driving state; the battery management system sends a cooling / heating request signal of the power battery to the The vehicle controller and the air conditioner controller; the vehicle controller judges whether there is a priority in the thermal management condition of the vehicle that is higher than the cooling / heating request target of the power battery, and if so, the vehicle controller sends the request signal of the target to the air conditioner controller, the air-conditioning controller responds to the cooling / heating request of the target first; if not, the vehicle controller controls the air-conditioning controller to respond to the cooling / heating request of the power battery. The power battery thermal management control method can alleviate the conflict between passenger comfort and cruising range anxiety based on different vehicle operating conditions, and ensure that the power battery is in the optimal charging and discharging temperature range.

Description

technical field [0001] The invention belongs to the field of electric vehicle power battery systems, and in particular relates to a power battery thermal management control method. Background technique [0002] The power battery is the only source of energy for electric vehicles, providing driving energy conversion for electric vehicles and the facilities in them. For example, to provide kinetic energy for the driving of electric vehicles, or to provide electrical energy for the air conditioning system in electric vehicles, etc. The cruising range of electric vehicles directly affects the driving experience of the vehicle, especially when driving an electric vehicle to go out, mileage anxiety is also a headache in the process of using electric vehicles. [0003] In the prior art, the conversion efficiency of the energy conversion for the power battery to provide driving force for the electric vehicle cannot reach 100%. Overheating or overcooling of the power battery will a...

AI Technical Summary

Problems solved by technology

This creates a contradiction, that is, the contradiction between ensuring the comfort of the vehicle (such as the use of air conditioners, etc.) and the anxiety of the cruising range.

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