High-sealing-grade battery pack structure for new energy electric vehicle

An electric vehicle, high-sealing technology, applied in sealing materials, secondary batteries, structural parts, etc., can solve problems such as fire, vehicle performance degradation, circuit board short circuit, etc., to achieve enhanced sealing, heat dissipation, and waterproof The effect of sealing protection

Inactive Publication Date: 2022-03-15
珠海中车装备工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The composition of the battery pack mainly includes batteries, modules, electrical systems, thermal management systems, BMS, shells and seals, etc., and is generally installed in the lower part of the car body, and the quality of the seals directly determines the sealing performance of the battery pack. If it fails, the battery pack will lose its ability to resist dust, rain, etc., which will lead to internal metal corrosion or circuit board short circuit, which will cause the performance of the whole vehicle to decline or even be scrapped.
[0003] The existing new energy electric vehicle battery packs have poor sealing performance and poor waterproof effect. After the battery enters water, it will damage the battery at least, and cause a fire in severe cases, which will bring safety hazards, and if the substances in the battery overflow, it will seriously pollute Environment: the heat dissipation effect of the existing battery pack is not good, and after the battery temperature rises, there are also problems of damage to the battery and fire

Method used

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  • High-sealing-grade battery pack structure for new energy electric vehicle
  • High-sealing-grade battery pack structure for new energy electric vehicle
  • High-sealing-grade battery pack structure for new energy electric vehicle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Refer to the attached Figure 1-7 , a battery pack structure with a high sealing level for new energy electric vehicles in this embodiment, including an outer box 1, an inner box 4, a battery box 11 and a branch pipe 25, and the bottom of the outer box 1 is provided with The extended sealing edge 2 of equal width, the bottom of the outer box 1 is fixed with a rectangular cooling plate 17, the extending sealing edge 2 is provided with a placement groove 26 and an internal thread hole 27, and the top of the extending sealing edge 2 is connected by bolts The outer box cover 3, the inner box 4 is provided in the inner cavity of the outer box 1, and the top of the inner box 4 is provided with a "mouth" shaped groove 15, and the inside of the "mouth" shaped groove 15 A "mouth"-shaped rubber sealing strip 16 is provided, an inner box cover 5 is provided above the inner box 4, the inner box cover 5 is integrally formed with a clamping plate 14 at the bottom of the body cover 5 ...

Embodiment 2

[0038] Refer to the attached Figure 8 The difference from Example 1 is that the bottom of the outer box 1 is plugged with a water tank 29, a rectangular sealing plug 30 is arranged between the outer wall of the outer box 1 and the inner wall of the water tank 29, and the bottom of the outer box 1 is at a distance of The distance between the bottom of the inner cavity of the water tank 29 is 2-4cm, preferably 3cm.

[0039] The specific implementation scenarios are:

[0040] When using the present invention, the heat dissipation pipe 18 is installed on the inner wall of the outer box body 1, the branch liquid injection port 19 on the heat dissipation pipe 18 is connected with the main pipe 22 with the branch pipe 25, and the main pipe 22 is installed on the inner wall of the outer box body 1 and make the height of the outer box 1 higher than the heat dissipation pipe 18, inject cooling liquid into the main pipe 22 through the main liquid injection port 23 on the main pipe 22, ...

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Abstract

The invention belongs to the technical field of electric vehicle battery packs, in particular to a high-sealing-grade battery pack structure for a new energy electric vehicle, and adopts the technical scheme that the high-sealing-grade battery pack structure for the new energy electric vehicle comprises an outer box body, an inner box body, a battery box and a branch pipe, a rectangular heat dissipation plate is fixedly installed at the bottom of the outer box body, a containing groove and an inner threaded hole are formed in the extending sealing edge, the top of the extending sealing edge is connected with an outer box body sealing cover through a bolt, the inner box body is arranged in an inner cavity of the outer box body, and a square groove is formed in the top of the inner box body. Cooling liquid is injected into the heat dissipation pipes to effectively dissipate heat of the bottom of the inner box body, the heat dissipation plates are arranged to effectively dissipate heat of the side walls of the inner box body, and the water tank is arranged to dissipate heat of the outer box body, so that the heat dissipation effect is good, the temperature of the battery is effectively prevented from being too high, and the safety is enhanced.

Description

technical field [0001] The invention relates to the technical field of electric vehicle battery packs, in particular to a high-sealing battery pack structure for new energy electric vehicles. Background technique [0002] Affected by global energy shortage and climate warming, people's appeal for new energy is becoming more and more urgent. As a major player in energy consumption and product emissions, the automobile industry needs to focus on the serious problems of resource shortage and environmental pollution in order to keep pace with the times. Emerging green vehicles and new energy vehicles have emerged under this development trend. With the development of new energy vehicles, the battery pack, as the core energy source of new energy vehicles, provides electric energy for the whole vehicle, and its performance safety is directly related to the safety of the whole vehicle. The composition of the battery pack mainly includes batteries, modules, electrical systems, therm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/613H01M10/6554H01M10/6567H01M50/186H01M50/249
CPCH01M50/249H01M50/186H01M10/613H01M10/6567H01M10/6554Y02E60/10
Inventor 陈林张弛严毅张为阳舒志川
Owner 珠海中车装备工程有限公司
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