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Battery box, battery pack and vehicle

A battery box and box technology, which is applied to large-sized batteries/battery packs, small-sized batteries/battery packs, battery pack components, etc. The improvement of energy density and the incompatibility with the lightweight of automobiles can meet the requirements of power performance and cruising range, reduce the types and quantities, and prevent excessive deformation.

Active Publication Date: 2019-03-01
BEIJING CHJ AUTOMOTIVE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With this sealed connection structure, there are many types of parts and heavy weight, which do not meet the needs of lightweight vehicles, and limit the improvement of the energy density of the battery pack, which is not conducive to the continuous improvement of the performance and cruising range requirements of electric vehicles.

Method used

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  • Battery box, battery pack and vehicle
  • Battery box, battery pack and vehicle
  • Battery box, battery pack and vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] The cover body 101 has a cover edge 102, and the edge of the cover edge 102 is formed as the outer edge of the cover body 101, such as Figure 3 to Figure 6 As shown, the cover edge 102 is tightly connected to the flange surface.

[0076] The cover body 101 has a cover edge 102, the edge of the cover edge 102 is formed as the outer edge of the cover body 101, and the sealing member 1022 is connected with the outer edge of the cover edge 102, as Figure 3 to Figure 6 As shown, and the cover edge 102 is tightly connected with the flange surface, it not only realizes the fast connection between the box cover 10 and the box body 20, but also plays a good supporting role for the seal 1022, which can effectively prevent the seal 1022 from excessively deformation, to ensure that the sealing member 1022 fits stably with the flange surface, thereby improving the sealing reliability.

[0077] Further, one of the cover edge 102 and the flange surface is provided with a plurality ...

Embodiment 2

[0091] The difference from Embodiment 1 is that: the first overlapping portion 1023 is on the top, and the second overlapping portion 1024 is on the bottom. The principle is basically the same as that of Embodiment 1, and will not be repeated here.

Embodiment 3

[0093] The difference from Embodiment 1 or Embodiment 2 is that: there are multiple first overlapping portions 1023; or, there are multiple second overlapping portions 1024, such as Figure 5 shown.

[0094] The number of the first overlapping portion 1023 is multiple, that is, the sealing member 1022 is provided with a plurality of first overlapping portions 1023 protruding toward the cover body 101, and the plurality of first overlapping portions 1023 are all connected to the second overlapping portion 1024. (can be one or more) fit together, which further increases the contact area between the sealing member 1022 and the cover body 101, thereby further improving the connection strength between the sealing member 1022 and the cover body 101, and further improving the use of the box cover 10 reliability.

[0095] Similarly, the number of the second overlapping portions 1024 is multiple, that is, the cover body 101 is provided with a plurality of second overlapping portions 1...

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Abstract

The invention provides a battery box, a battery pack and a vehicle. The battery box comprises a box body and a box cover; the box body defines a containing cavity with one end being open, and the openend of the containing cavity is provided with a flange surface; the box cover covers the open end of the containing cavity and comprises a cover body and an elastic sealing element which is connectedto the outer edge of the cover body; the cover body and the box body are firmly connected; and the sealing element is attached to and in sealed connection with the flange surface. By changing the structure of the box cover and preparing the periphery portion of the box cover with an elastomer material, the box cover has the function of an elastic sealing structure and can be in sealed connectionwith the box body directly through the sealing element of the box cover, so that the variety and number of parts are reduced; the assembly process of the battery box is simplified; the weight of the battery box is reduced at the same time; the lightweight requirement of cars is met, and the energy density of the battery pack can be increased advantageously so that the increasing requirement for the power performance and the endurance mileage of electric cars can be met.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a battery box, a battery pack and a vehicle. Background technique [0002] At present, the battery box of the existing electric vehicle power battery, the sealed connection structure of the upper and lower boxes, usually adopts elastic sealing silicone pads between the upper and lower boxes or adds foamed silicone or UV (Ultraviolet Rays, ultraviolet light) between the upper and lower boxes. ) elastic glue, after the upper cover is pressed tightly, it is fixed and connected with bolts with an interval of no more than 100mm to ensure that the elastic sealing structure (that is, the elastic sealing silicone between the upper cover and the box) Pad, foamed silica gel or UV elastic glue, etc.) are always in a proper compression state, so that the box can reach the sealing level of IP67 and above. With this sealed connection structure, there are many types of components used and ...

Claims

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Application Information

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IPC IPC(8): H01M2/02H01M2/08H01M2/10H01M50/24H01M50/249H01M50/271
CPCH01M50/10H01M50/183H01M50/20Y02E60/10
Inventor 马东辉徐超
Owner BEIJING CHJ AUTOMOTIVE TECH CO LTD
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