Power battery heat management system

Abstract

The invention relates to a power battery heat management system, and belongs to the technical field of power batteries. The power battery heat management system comprises a battery box, a temperatureadjustment device, a controller, a power supply switch and a plurality of semiconductor chilling plates. The temperature adjustment device is connected with the battery box, the semiconductor chillingplates are arranged on the temperature adjustment device and connected with a power supply end of the battery box through the power supply switch, the controller is connected with the power supply switch and used for controlling the power supply switch, so that the semiconductor chilling plates refrigerate, a plurality of phase change components and a plurality of battery components are arrangedin the battery box, and a temperature sensor connected with the controller is arranged in each phase change component. The temperature adjustment device comprises a hollow plate and a plurality of heat pipes, the hollow plate is filled with cooling liquid under a vacuum state, one end of each heat pipe is communicated with the hollow plate, and the other end of each heat pipe is closed and inlaidinto the battery box. The power battery heat management system has the advantages of simple structure, high cooling efficiency, easiness in control, light weight, low cost, excellent performance and the like.

Description

technical field [0001] The invention belongs to the technical field of power batteries, and in particular relates to a power battery thermal management system. Background technique [0002] The power battery is one of the core components of an electric vehicle, which provides power for the entire vehicle. The power battery of an electric vehicle generally consists of a single module, and when the battery pack is composed of modules, its service life, work efficiency and safety are directly related. Or indirectly affected by temperature, therefore, to improve its performance and safety, its working temperature must be controlled within a reasonable range. Due to its internal chemical reaction, a large amount of heat will be released, such as electrochemical reaction heat generation, internal polarization reaction heat generation and Joule heat, etc. If the heat cannot be dissipated in time, the electrolyte will catch fire and cause a fire or even an explosion. , endangering ...

AI Technical Summary

Problems solved by technology

However, the current research on the liquid cooling structure of power batteries is not mature, and the heat transfer efficiency of the cooling structure is not high.

At present, the air cooling structure or liquid cooling structure used has problems such as complex system, low heat dissipation efficiency, and uneven temperature inside the module, which directly affects the performance and service life of the battery, as well as the safety and reliability of the system.

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