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Battery safety device

A battery safety and battery technology, which is applied in the direction of batteries, lithium batteries, secondary batteries, etc., can solve the problem that the thermal runaway of lithium batteries cannot be effectively prevented

Pending Publication Date: 2021-07-23
IND TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most of the existing battery safety devices use pneumatic safety structures, which cannot effectively prevent lithium batteries from entering a state of thermal runaway

Method used

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  • Battery safety device
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Examples

Experimental program
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Embodiment Construction

[0047] Embodiments of the battery safety device according to the present invention will be described below with reference to related drawings. For the sake of clarity and convenience of illustration, the sizes and proportions of the components in the drawings may be exaggerated or reduced. In the following description and / or claims, when an element is referred to as being "connected" or "coupled" to another element, it may be directly connected or coupled to the other element or there may be intervening elements; and when an element is referred to as " When "directly connected" or "directly coupled" to another element, there are no intervening elements, and other words used to describe the relationship between elements or layers should be interpreted in the same way. To facilitate understanding, the same components in the following embodiments are described with the same symbols.

[0048] see figure 1 and figure 2 , which is an exploded view and an assembled view of the bat...

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PUM

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Abstract

The present invention discloses a battery safety device, which may be disposed inside a battery, and may include a conductive handle and a temperature-controlled expansion element. The conductive handle may include a connection portion, a left extension portion, a right extension portion, a top extension portion and an actuating sheet. The left extension portion and the right extension portion may be connected to the connection portion and contact the first conductive portion of the polar winding of the battery. The top extension portion may be connected to the connection portion and contact the first electrode terminal of the battery. The actuating sheet may be connected to the connection portion, and there may be an accommodating space between the actuating sheet and the polar winding, and the temperature-controlled expansion element may be disposed in the accommodating space and contact the actuating sheet and the first conductive portion.

Description

technical field [0001] The invention relates to a battery safety device, in particular to a battery safety device which can effectively improve safety. Background technique [0002] Lithium batteries have many advantages, such as high energy density, light weight, environmental protection and long service life, etc., and have been widely used in various devices. However, when the lithium battery is fully charged, the active material inside the lithium battery is in an excited state, so when the external current path is connected to the lithium battery, the lithium battery will spontaneously discharge. Therefore, if the lithium battery is short-circuited due to poor insulation, a rapid chemical reaction may occur, and a large amount of heat energy and high-temperature gas will be generated at this time, causing the lithium battery to enter a state of thermal runaway. [0003] In addition, if the lithium battery is used improperly (such as overcharging), the materials inside ...

Claims

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Application Information

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IPC IPC(8): H01M50/572H01M10/052
CPCH01M10/052H01M50/581H01M2200/10H01M50/572H01M10/443Y02E60/10H01M10/0525H01M10/4235H01M2200/00
Inventor 叶胜发
Owner IND TECH RES INST