Battery explosion-proof structure and battery including same
An explosion-proof structure and battery technology, which is applied in the direction of secondary batteries, structural parts, battery pack components, etc., can solve the problems of accidental damage to explosion-proof membranes, poor safety, and small area of explosion-proof membranes, so as to enhance the safety and reliability of explosion-proof, improve Production efficiency and the effect of simple battery structure
Inactive Publication Date: 2017-03-29
天津中聚电池技术有限公司
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Problems solved by technology
[0005] The technical problem to be solved by the present invention is to provide a battery explosion-proof structure and its battery
Method used
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[0026] A preferred embodiment will be given below, and the present invention will be described more clearly and completely in conjunction with the accompanying drawings.
[0027] Such as Figure 1-4 As shown, the battery explosion-proof structure of the present invention includes a battery case cover 1 , a compression nut 2 , an explosion-proof pin 3 and an explosion-proof membrane 4 . The battery case cover 1 is provided with a counterbore, and the counterbore has a stepped surface 11 , and the explosion-proof membrane 4 and the compression nut 2 are sequentially arranged on the stepped surface 11 . The inner wall of the counterbore is provided with an internal thread 12 cooperating with the compression nut 2, and the compression nut 2 is fixedly connected with the internal thread 12 on the inner wall of the counterbore through the external thread. The top surface of the compression nut 2 is provided with four exhaust holes 21 for exhausting gas when the gas in the battery b...
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Abstract
The invention provides a battery explosion-proof structure and a battery including the same. The battery explosion-proof structure includes a battery case cover, a compression nut, an explosion-proof pin, and an explosion-proof film. The battery case cover is provided with a sink hole, so The counterbore has a stepped surface, the explosion-proof membrane and the compression nut are sequentially arranged on the stepped surface, the explosion-proof pin is fixedly connected to the center of the top surface of the compression nut and points to the explosion-proof membrane, the compression The top surface of the tight nut is provided with at least one air hole, and the explosion-proof needle has at least three needle points, and the tips of the needle points are located on a plane and can enclose a certain area, and the plane is parallel to the plane where the explosion-proof membrane is located. . The battery includes a battery casing and the above-mentioned explosion-proof structure of the battery. The invention has a simple structure and is convenient for installation. While improving the production efficiency, it also reduces the assembly error generated in the installation process, improves the accuracy of the pressure relief starting pressure, and strengthens the safety and reliability of explosion protection.
Description
technical field [0001] The invention particularly relates to an explosion-proof structure of a battery and a battery comprising the same. Background technique [0002] Lithium-ion batteries have the advantages of high working voltage, high specific energy, and wide operating temperature range. In recent years, they have been widely used in electric tools. In order to meet the high power requirements of electric tools when driving, the battery volume is getting bigger and bigger. For this reason, when abnormal conditions such as short circuit, overcharge, and overdischarge occur during battery use, a large amount of gas will be generated inside the battery, resulting in a sharp increase in the internal pressure of the battery, causing deformation of the battery case and even the risk of explosion. [0003] Power batteries used today, especially plastic case power batteries, mostly use explosion-proof devices with spring structures. This type of explosion-proof valve has rela...
Claims
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IPC IPC(8): H01M2/12H01M50/148H01M50/342
CPCH01M10/0525H01M50/383Y02E60/10
Inventor 李宝玉乔敏潘楠曹文成马紫峰
Owner 天津中聚电池技术有限公司