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Battery pack explosion-proof valve and battery pack

A technology for battery packs and explosion-proof valves, which is applied to battery pack parts, circuits, electrical components, etc. It can solve problems such as low opening pressure springs, puncture of explosion-proof membrane thimbles, and seal failure, so as to ensure rapid leakage and safe use High performance, the effect of improving the safety of use

Active Publication Date: 2021-04-27
SVOLT ENERGY TECHNOLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The opening pressure of the spring valve is low, but the spring cannot quickly open to the maximum stroke after blasting, and the air flow after blasting is small. The bursting pressure of the thimble valve cannot be compared with the bursting pressure of the spring valve. Under the condition of thermal runaway, the explosion-proof membrane is easily pierced by the thimble, resulting in seal failure

Method used

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  • Battery pack explosion-proof valve and battery pack
  • Battery pack explosion-proof valve and battery pack
  • Battery pack explosion-proof valve and battery pack

Examples

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Embodiment

[0058] Refer below Figure 1-Figure 6 The specific structure of the battery pack explosion-proof valve in a specific embodiment of the present invention is described.

[0059] like Figure 1-Figure 6 As shown, the battery explosion-proof valve of this embodiment includes a body 1, two limit brackets 2, a thimble 3, a support 4, an elastic member 5, a breathable membrane 6, a first fire filter 7, a second fire filter 8 and Seal 9.

[0060] like Figure 1-Figure 2 As shown, the body 1 includes a cylinder 11 and a cover 12, the cylinder 11 is provided with three clamping holes 111 distributed along its circumference, the inner wall of the cylinder 11 is provided with installation protrusions, and the installation protrusions are provided with three There are two first grooves 113 distributed along its circumference, and each first groove 113 is a semicircular groove. The bottom of the barrel 11 is provided with threads, and the threads are used to connect with the battery cov...

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Abstract

The invention discloses a battery pack explosion-proof valve and a battery pack.The battery pack explosion-proof valve comprises a body, two limiting supports, an ejector pin, a support, an elastic piece and a breathable film, a vent hole is formed in the top wall of the body, the two limiting supports are arranged on the body in a spaced mode, the ejector pin is arranged on the limiting support located on the upper portion in a penetrating mode, the support is installed on the limiting support located on the lower portion and used for supporting the ejector pin, the elastic piece is arranged on the ejector pin in a sleeving mode, the two ends of the elastic piece abut against the support and the limiting support located on the upper portion respectively, and the breathable film is connected to the body and located between the ejector pin and the top wall of the body. The battery pack explosion-proof valve adopts an integrated structure that the elastic piece is matched with the ejector pin, and the elastic piece moves to push the ejector pin to puncture the breathable film when thermal runaway is triggered, so that the requirements of different bursting pressures are met, the breathable film can be directly communicated with the outside to realize higher air permeability after being damaged, rapid leakage of gas in the battery pack is ensured, and the use safety of the battery pack is improved.

Description

technical field [0001] The invention relates to the technical field of batteries, in particular to an explosion-proof valve for a battery pack and a battery pack. Background technique [0002] With the continuous development of electric vehicles, the design of low-cost battery packs has become the focus of the research and development of major battery factories, but the premise of low cost must be the safety of the battery pack. There are two kinds of spring valve and thimble valve. The opening pressure of the spring valve is low, but the spring cannot quickly open to the maximum stroke after blasting, and the air flow after blasting is small. The bursting pressure of the thimble valve cannot be compared with the bursting pressure of the spring valve. Under the condition of thermal runaway, the explosion-proof membrane is easily pierced by the thimble, causing the seal to fail. Contents of the invention [0003] The first purpose of the present invention is to propose an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M50/342H01M50/30
CPCY02E60/10
Inventor 陈许超张海建唐丽娟张兴东瓮百川刘琼于达
Owner SVOLT ENERGY TECHNOLOGY CO LTD
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