Novel all-weather electric vehicle battery pack shell

Abstract

The invention discloses a novel all-weather electric vehicle battery pack shell which comprises an upper cover assembly and a lower box body assembly installed in a sealing and buckling mode through a U-shaped sealing strip. The upper cover assembly comprises an upper cover, an upper heat preservation layer and a sealing strip which are fixed through an upper bonding layer from outside to inside, the lower box body assembly comprises a cold and hot circulation aluminum pipe, an inner plate, a lower bonding layer and an outer plate which are fixed from inside to outside, and the periphery of the outer plate is provided with a lower heat preservation layer fixed through a closed cavity formed by bonding an L-shaped sheet metal part. And a U-shaped matched sealing strip is arranged at the edge joint of the upper cover assembly and the lower box body assembly. According to the electric vehicle battery pack shell made of the all-weather composite material, the composite material has better designability, the multi-layer hollow three-dimensional structure design is adopted, the mechanical property is met, and meanwhile the battery shell has better heat insulation, air tightness, insulativity and better fireproof and explosion-proof performance.

Description

technical field [0001] The invention relates to the technical field of new energy battery packs, in particular to a novel all-weather electric vehicle battery pack shell. Background technique [0002] The electric vehicle battery pack is a container for storing batteries. From the perspective of use, the battery pack shell is required to have certain strength, rigidity, impact resistance, shock absorption, flame retardancy, sealing, heat preservation, lightweight, and quick replacement performance. The defective and the deficiency of prior art are at least: [0003] 1. The material of the battery pack is usually aluminum alloy or steel, which has insufficient designability, simple shape, and many processes. It cannot be manufactured at one time. [0004] 2. At present, the battery charging method is mostly in the form of charging piles, which can also be extended to slow charging and fast charging. The slow charging time is 6-8h to fully charge, the charging time is too lon...

AI Technical Summary

Problems solved by technology

[0003] 1. The material of the battery pack is usually aluminum alloy or steel, which has insufficient designability, simple shape, and many processes. It cannot be manufactured at one time. It is heavy, does not keep heat, cannot adapt to the north and south, and the temperature difference between winter and summer leads to a decrease in cruising range.

[0004] 2. At present, the battery charging method is mostly in the form of charging piles, which can also be extended to slow charging and fast charging. The slow charging time is 6-8h to fully charge, the charging time is too long, not flexible enough, and it is inconvenient for work and life, especially in the face of Unable to respond in time for emergencies

[0006] 4. The upper cover and the lower box of the conventional battery pack are mostly connected by screws, and there are a large number of screws. After the screws are locked, the locking torque of each screw is required to reach the same torque. In the actual operation process, it will be found that the screws that have been screwed The torque will change when other screws are tightened, and after all the screws are tightened, it is necessary to check whether the screw locking torque is up to the standard, otherwise it will be re-tightened, resulting in a complicated process

Or design a set of special tooling, and pneumatically control all the screws to be screwed in together, but the cost will increase

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