Explosion-proof directional pressure-relief type battery box and preparation method thereof

A battery box and pressure relief technology, which is applied in the direction of battery box/jacket, battery, battery pack parts, etc., can solve the problems that the battery box does not have a protective effect, the lithium battery explodes, and endangers the life safety of passengers, etc., to achieve Good explosion-proof effect, weight reduction, good mechanical properties

Active Publication Date: 2016-09-21
SHANDONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, in the case of abnormal use or high temperature, there is a danger of lithium batteries exploding. If the lithium batteries used in electric vehicles explode, it will seriously endanger the lives of passengers.
However, at present, explosion-proof battery boxes are often only used as "prevention", that is, to reduce the possibility of accidental explosions as much as possible. For example, Chinese patent (CN103000837A) discloses an explosion-proof battery box. There are anti-vibration springs inside to reduce the battery explosion due to bumps, but once an explosion occurs, the battery box does not provide any protection at all

Method used

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  • Explosion-proof directional pressure-relief type battery box and preparation method thereof
  • Explosion-proof directional pressure-relief type battery box and preparation method thereof
  • Explosion-proof directional pressure-relief type battery box and preparation method thereof

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Embodiment 1

[0032] In this embodiment, a battery box placed at the bottom of a car is taken as an example for illustration.

[0033] 1. Preparation of battery box body

[0034] A polyethylene box is selected as the core mold of the box body. There are holes distributed around the core mold. The diameter of the hole is 1mm, and the short tube passes through the hole. The short tube exceeds the surface of the box body by 5mm. The 12K high modulus poly The vinyl fiber is evenly wrapped around the short tube outside the polyethylene mandrel for one layer, and then the 12k carbon fiber impregnated with epoxy resin is evenly wrapped around the short tube for two layers on the outer layer. The total thickness of the fiber after winding is 2mm. Put the box in an oven at 120°C to cure the epoxy resin. After curing, pull out the short tube to get a box reinforced by high modulus polyethylene and carbon fiber winding. There are 1mm holes around the box for heat dissipation and drainage. Wire. Dril...

Embodiment 2

[0041] In this embodiment, a battery box placed on the roof of a car is taken as an example for illustration.

[0042] 1. Preparation of battery box body

[0043]The aluminum box is selected as the core mold of the box body. There are holes distributed around the core mold. The diameter of the hole is 2mm, and the short tube passes through the hole. The short tube exceeds the surface of the box body by 5mm. The 12k high-strength glass fiber impregnated with vinyl resin The mandrel is evenly wound around the short tube for 4 layers. After winding, the total thickness of the fiber is 3mm, and then the box is irradiated to cure the matrix. After curing, the short tube is pulled out to obtain a high-strength glass fiber-reinforced box. There are 2mm holes around it for heat dissipation and wiring. Drill holes in the contact part of the box cover to allow the bolts to pass through.

[0044] 2. Preparation of the lid

[0045] Choose an aluminum plate as the mandrel of the box cov...

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Abstract

The invention discloses an explosion-proof directional pressure-relief type battery box and a preparation method thereof. The battery box is composed of a box body and a box cover; the box body and the box cover are both made of fibers and prepared through a filament winding process; the box body is connected with the box cover through a bolt; holes are distributed on the box body; and the box cover and a box body opening are inclined, and a certain angle is formed between the box cover and the box body. The battery box of the invention can enable explosive energy of a battery to effuse according to a preset direction, and avoid the explosive energy from effusing from other directions, therefore, the life safety of passengers can be guaranteed and the using range of a lithium battery can be expanded. The battery box provided by the invention has the advantages of being light in weight, good in explosion-proof property, and directional in releasing the explosive energy and so on, and can significantly improve the use safety of the battery.

Description

technical field [0001] The invention relates to the technical field of battery equipment, in particular to an explosion-proof directional pressure relief battery box and a preparation method thereof. Background technique [0002] With the intensification of atmospheric pollution, the requirements for vehicle fuel are getting higher and higher, and electric vehicles are also gradually developed in response to the demand. Electric vehicles use batteries to provide energy, and the batteries are mainly lithium batteries. Lithium batteries have the advantages of high energy density, large output power, high average output voltage, good cycle performance, fast charge and discharge speed, wide operating temperature range, and long service life. Therefore, lithium batteries have developed rapidly in recent years. [0003] However, in the case of abnormal use or excessive temperature, there is a danger of lithium batteries exploding. If a lithium battery used in an electric vehicle ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M2/02H01M2/04H01M2/12H01M50/10H01M50/116H01M50/148H01M50/166H01M50/30
CPCH01M2200/00H01M50/10H01M50/116H01M50/166H01M50/148H01M50/394Y02E60/10
Inventor 乔琨朱波高学平于宽
Owner SHANDONG UNIV
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