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Battery boxes, battery packs and vehicles

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 energy density is improved, and it does not meet the light weight of automobiles, so as to achieve the effect of reducing the type and quantity, reducing the weight, and simplifying the structure

Active Publication Date: 2022-07-22
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 boxes, battery packs and vehicles
  • Battery boxes, battery packs and vehicles
  • Battery boxes, battery packs and vehicles

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 is fastened to the flange face along 102 .

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

[0077] Further, one of the cover edge 102 and the fla...

Embodiment 2

[0091] The difference from the first embodiment 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 the first embodiment, and will not be repeated here.

Embodiment 3

[0093] The difference from Embodiment 1 or Embodiment 2 is that: the number of the first overlapping parts 1023 is multiple; or, the number of the second overlapping parts 1024 is multiple, such as Figure 5 shown.

[0094] The number of the first overlapping portions 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 with the second overlapping portions 1024 (may be one or more) fit, which further increases the contact area between the sealing member 1022 and the cover body 101, thereby further improving the connection strength of 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 port...

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Abstract

The invention provides a battery box, a battery pack and a vehicle. The battery box includes a box body and a box cover; the box body surrounds an accommodating cavity with one end open, and the open end of the accommodating cavity is provided with a flange surface; The open end of the accommodating cavity includes a cover body and an elastic seal connected to the outer edge of the cover body, the cover body is fastened with the box body, and the seal piece is fitted and sealed with the flange surface. By changing the structure of the box cover, the invention uses elastomer material to prepare the outer peripheral part of the box cover, so that the box cover has the function of the elastic sealing structure. It reduces the type and quantity of parts, simplifies the assembly process of the battery box, and at the same time reduces the weight of the battery box, which meets the needs of lightweight automobiles, and helps to improve the energy density of the battery pack to meet the power performance and battery life of electric vehicles. Increasing mileage requirements.

Description

technical field [0001] The present invention relates to the technical field of automobiles, and in particular, to a battery box, a battery pack and a vehicle. Background technique [0002] At present, in the battery box of the existing electric vehicle power battery, the sealing connection structure of the upper and lower boxes is usually made of elastic sealing silicone pads or adding foamed silicone or UV (Ultraviolet Rays, UV) between the upper and lower boxes. ) elastic glue, after the upper cover is pressed, use bolts with an interval of no more than 100mm to fix the connection around the circumference to ensure that the elastic sealing structure (that is, the elastic sealing silicone between the upper cover and the box body) is under the condition of vibration and shock in the vehicle working condition. Pad, foamed silicone or UV elastic glue, etc.) are always in an appropriate compression state, so that the box body can reach the sealing level of IP67 and above. With...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M50/244H01M50/202H01M50/249H01M50/24H01M50/271
CPCH01M50/10H01M50/183H01M50/20Y02E60/10
Inventor 马东辉徐超
Owner BEIJING CHJ AUTOMOTIVE TECH CO LTD
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