Electric vehicle power battery temperature adjustment device, cooling system and electric vehicle

Abstract

The invention provides an electric vehicle power battery temperature adjustment device, a cooling system and an electric vehicle. The temperature adjustment device includes a liquid cooling plate body and a heating device; the liquid cooling plate body is provided with a plurality of liquid passages arranged side by side; the heating device is provided with At the bottom of the liquid cold plate body, it is used to heat the cooling liquid in the liquid channel; the above scheme makes the working temperature of the power battery more reasonable and easy to adjust; the scheme provided by the present invention has a simple and reasonable structure and can be applied In the current electric vehicle power battery cooling system, the installation is relatively convenient.

Description

technical field [0001] The invention belongs to the technical field of electric vehicle power battery cooling, and in particular relates to an electric vehicle power battery temperature regulating device, a cooling system and an electric vehicle. Background technique [0002] With the development of social economy, the demand for energy is further increased, and the voice of new energy technology is getting higher and higher. The development of electric vehicles is the general trend; as the core part of electric vehicles, the performance and service life of batteries directly determine the performance of electric vehicles. performance and cost. [0003] Due to the advantages of long life, low self-discharge rate, high specific power, high energy density and no pollution, lithium-ion power batteries have become the main power batteries used in electric vehicles; however, there is an optimal temperature range for lithium-ion battery discharge. When the battery temperature Whe...

AI Technical Summary

Problems solved by technology

[0005] If the heating scheme of the PTC heating core is adopted, since the heated area at the bottom of the module is not large, if the holes for placing the PTC heating core are set in the middle or on both sides of the harmonica tube, the heat exchange area of ​​the liquid cooling will be insufficient, so that it cannot To meet the heat dissipation requirements; therefore, a liquid heater is usually installed in the circulation pipeline to heat the antifreeze, and then the circulation pump is used to bring the heat to the battery module; since the heated antifreeze circulates continuously in the pipeline, through The heat loss from the pipeline to the surrounding low-temperature air is very large, and the heating efficiency is low

[0006] Based on the above-mentioned technical problems in the cooling of electric vehicle power batteries, there is no relevant solution; therefore, it is urgent to find an effective solution to solve the above problems

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