Battery cover anti-explosion membrane notching processing method
A processing method and technology of explosion-proof film, which are applied to battery pack parts, circuits, electrical components, etc., can solve the problems of affecting the explosion-proof effect of batteries, short service life of punches, and reducing processing efficiency, so as to improve explosion-proof performance and processing efficiency. The effect of high precision and improved processing quality
Inactive Publication Date: 2013-06-05
TIANJIN SANHEYI ELECTRONICS
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Problems solved by technology
This one-time molding technology has no obvious disadvantages for small thin sheet processing, but the technical problems are prominent when performing explosion-proof notch processing on thicker explosion-proof diaphragms
One is one-time processing and forming. Due to the stress concentration, the punch is damaged and the service life of the punch is very short; it not only increases the processing cost, but also reduces the processing efficiency.
Second, the deformation of the explosion-proof diaphragm is serious after one-time processing, which even affects the explosion-proof effect of the battery, and there are defects such as potential safety hazards in the use of the battery.
Method used
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Embodiment 1
[0019] A method for processing the notch of the explosion-proof diaphragm of a battery cover. The processing of the explosion-proof diaphragm 1 and notch 2 is carried out in two steps. The explosion-proof notch is punched out by a vapor-liquid booster cylinder on the mark. The explosion-proof notch of the explosion-proof diaphragm is circular, and the thickness of the notch is 0.05mm. When the explosion-proof diaphragm is notched, the two sides of the explosion-proof diaphragm are respectively provided with circular positioning holes 3 machined.
[0020] The concrete process of this embodiment:
[0021] Such as figure 1 As shown in the figure, the machine tool positioning circular holes are machined on both sides of the explosion-proof diaphragm sheet, and then a shallow mark is first processed on the turntable, keeping the thickness of the shallow mark at 1mm; On the basis of shallow marks, stamp out explosion-proof marks with a required thickness of 0.05mm.
[0022] The ...
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Abstract
The invention relates to a battery cover anti-explosion membrane notching processing method. The invention belongs to the lithium ion battery technical field. The battery cover anti-explosion membrane notching processing method is characterized in that anti-explosion membrane notching process is carried out by step, firstly shadow trace is processed, and then anti-explosion notching is punched onthe basis of the shadow trace. The invention solves the technical problem of one-step punch forming, effectively reduces punching deformation of anti-explosion membrane and greatly prolongs the service life of punch head; and the invention has the advantages of simple technology, convenient operation, high processing accuracy, excellent battery anti-explosion performance, high safety grade, wide application range, economy and practicability.
Description
technical field [0001] The invention belongs to the technical field of lithium ion batteries, and in particular relates to a method for processing the notch of an explosion-proof diaphragm of a battery cover. Background technique [0002] At present, lithium-ion batteries have the characteristics of small size, light weight, strong power, no memory, and environmental protection, and are widely used in industrial production and daily life. The existing lithium-ion battery cap adopts the method of setting an explosion-proof diaphragm to achieve the explosion-proof purpose. The explosion-proof diaphragm is protected against explosion through the explosion-proof notch, and the existing notch of the explosion-proof diaphragm is processed by one-time stamping forming technology. This one-time molding technology has no obvious disadvantages for small-scale sheet processing, but the technical problems are prominent when performing explosion-proof notch processing for thicker explos...
Claims
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IPC IPC(8): H01M2/12H01M2/34H01M2/04H01M50/147H01M50/30H01M50/578
CPCY02E60/12Y02E60/10
Inventor 韩旭李媛
Owner TIANJIN SANHEYI ELECTRONICS