Temperature management device of power battery pack of electric automobile, as well as manufacture method and application method thereof

Abstract

The invention relates to a temperature management device of a power battery pack of an electric automobile, as well as a manufacture method and an application method thereof. The manufacture method comprises the following steps: cellular stainless steel sheet material is designed; the material is filled with flexible porous nano carbon fiber solvent adsorbate; solvent adopts a non-straight damp pressed flowing mode; a heating device is provided. The temperature management device can perform heating when the temperature is low and perform cooling when the temperature is high, so as to enable the temperature to be balanced. The temperature management (cooling, heating and balancing) device of the power battery pack applied to the electric automobile mainly perform management of heating at low temperature, cooling at high temperature and temperature balancing on the power battery pack, improves the safety of the power battery pack and the temperature management efficiency, reduces the temperature difference among cells in the power battery pack, ensures that the power battery pack can be normally operated when the finished automobile is in a defined operating environment, prolongs the service life of the power battery pack, improves the safety use of the power battery pack, and reduces the after-sales maintenance of the power battery pack.

Description

technical field [0001] The invention relates to a power battery system of an electric vehicle, in particular to a temperature management device for a power battery pack of an electric vehicle and a manufacturing method and a use method thereof. Background technique [0002] As the main energy storage device of the electric vehicle, the battery pack is a key component of the electric vehicle and directly affects the performance of the electric vehicle. Lithium-ion power batteries are currently being used in electric vehicle battery packs due to their excellent power output characteristics and long life. Due to the limited space on the vehicle, a large amount of heat generated by the battery during operation is affected by the space and accumulates, resulting in uneven temperature everywhere and affecting the consistency of the battery cells, and the use of low and high temperatures will reduce the battery charge and discharge cycle efficiency, affecting The power and energy ...

AI Technical Summary

Problems solved by technology

[0004] It can more effectively manage battery temperature and realize intelligent control, but its research and development and manufacturing costs are high, and the technology is difficult. At present, various thermal management problems have the following problems:

[0007] The battery water-cooling scheme, the water-cooling system is higher than the former two in terms of technical research, design and development, manufacturing, cost and technical performance requirements, especially considering the safety of battery use and the sealing of the water-cooling system High requirements are put forward, resulting in complicated process and high cost

[0008] To sum up, there are the following technical problems in the prior art: cooling air is used to dissipate heat from the battery pack, and the battery pack is arranged outside the cabin. Air conditioning in the passenger cabin

Liquid cooling dissipates heat from the battery pack, the design is complex, there are many components, the cost is high, and there are safety risks caused by liquid leakage

Images