Enclosed battery box for active heat management of electric vehicle

Abstract

The invention belongs to the field of electric vehicles, and discloses an enclosed battery box for active heat management of an electric vehicle. The enclosed battery box comprises a battery box body, and a semiconductor chilling plate, an internal fin, a fan, a battery management system and a battery pack which are arranged in the battery box body, wherein the battery box body is an enclosed box body, the fan is arranged at one side of the internal fin; the semiconductor chilling fin is fixed on the inner side wall of the battery box body and connected with the internal fin; the battery management system is used for controlling working states of the fan and the semiconductor chilling plate in real time according to a temperature, which is monitored by the battery management system, in the battery pack, so as to realize active heat management. According to the enclosed battery box, the structure of an existing battery system is not changed, simple switching of a heating manner and a refrigerating manner of the battery pack inside the battery box of the electric vehicle can be realized, relatively high dustproof and waterproof grades can be realized; the battery box has an active heat management control strategy; a heating component and a refrigerating component for a power battery pack are simple and convenient to mount, and the price is low.

Description

technical field [0001] The invention belongs to the technical field of power battery packs for electric vehicles, and relates to a closed battery box for active heat management of electric vehicles. Background technique [0002] Lithium-ion power battery pack is one of the core components of electric vehicles, and its performance directly affects the performance of the vehicle. Lithium-ion power battery packs can only perform well when working in a suitable temperature range (generally 20-40°C), but in severe winter conditions, the power battery system needs to work in a lower temperature environment , when the battery pack is working below zero, its performance will be greatly reduced, and measures need to be taken to heat the power battery pack; in hot summer conditions, the lithium-ion power battery pack will generate heat during work, which is affected by the inside of the battery box. Due to the limitation of space, the heat cannot be dissipated in time, which can easi...

AI Technical Summary

Problems solved by technology

However, in this air-cooling method, there is material exchange between the inside of the box and the surrounding environment, which cannot meet the high-level protection requirements of the battery box against dust and water.

Water cooling method, complex structure, high cost, and the risk of cooling water leakage

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