Totally-enclosed battery box

Abstract

The invention discloses a totally-enclosed battery box which is high in safety, excellent in radiation effect, explosion-proof effect and flame retardant effect. The battery box comprises a box body, a battery pack and a battery management module (5), wherein the box body comprises a box frame (2), a left cover plate (3) and a right cover plate (4), and the battery pack is formed by connecting a plurality of cylindrical monomer batteries through conductive plates (61, 62) in regular rules; left and right surfaces of the battery pack are covered with heat-conducting silicon sheets (9), and the left cover plate (3) and the right cover plate (4) are respectively fixedly connected with left and right surfaces of the box frame (2) through pressing the heat-conducting silicon sheets (9); and inner walls of the box frame (2), the left cover plate (3) and the right cover plate (4) are plated with a high-heat conducting ceramic material. The totally-enclosed battery box is applicable to providing power supply for electric vehicles.

Description

technical field [0001] The invention relates to the field of batteries, in particular to a battery box used for electric vehicles. Background technique [0002] Lithium-ion batteries have the advantages of large specific capacity, high working voltage, long cycle life, small size, and light weight, and have become the first choice for electric vehicles. The power battery as the power supply of electric vehicles requires a large capacity and voltage, while the voltage and capacity of a single lithium-ion battery are very small. Therefore, in general, many single batteries need to be installed in multiple batteries In the box, battery packs are formed by connecting in series and in parallel to meet the requirements of the power source of the car. This puts forward higher requirements on the high-efficiency heat dissipation capacity of the battery: the lithium-ion power battery pack will generate a lot of heat during the high-current discharge and charging process, and long-te...

AI Technical Summary

Problems solved by technology

However, in actual use, due to the complex road conditions when the electric vehicle is driving, the battery box will shake due to the bumps of the car, and the battery box with the above structure has hidden dangers: because the battery box cover and the conductive plate are generally made of hard materials, During the shaking process of the battery box, it is easy to wear out the insulation and heat conduction sheet and fail to play the role of insulation. Increasing the thickness of the insulation and heat conduction sheet will inevitably increase the thermal resistance and affect the heat dissipation effect of the battery box.

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