Sealing plate of high capacity and power lithium battery
A power lithium and sealing plate technology, applied in battery pack parts, circuits, electrical components, etc., can solve the problem of difficult control of explosion-proof pressure, and achieve the effect of accurate control of anti-release pressure, tight integration, and safe control of anti-release pressure.
Active Publication Date: 2013-01-30
江苏科达利精密工业有限公司
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Problems solved by technology
[0004] Based on the reason that the existing explosion-proof pressure is difficult to control, the inventor has developed a "high-capacity power lithium battery sealing plate" of the present invention
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[0036] A high-capacity power lithium battery sealing plate provided by the technical solution will be described below in conjunction with embodiments.
[0037] The present invention is implemented like this:
[0038] exist Figure 1 to Figure 17 Among them, a high-capacity power lithium battery sealing plate includes a top cover 10, which is arranged on the top of the cell shell, and a safety valve is provided on the top cover 10, and the safety valve consists of a pressure relief hole 11, an explosion-proof diaphragm 12 and The pressure relief hole 11 is a stepped hole structure with a narrow top and a wide bottom. An explosion-proof diaphragm 12 is provided at the bottom of the pressure relief hole 11, and an explosion-proof diaphragm 12 is provided on the lower side of the explosion-proof diaphragm 12. The sheet 12 is pressed against the compression ring 13 at the stepped position of the pressure relief hole 11, the outer ring of the compression ring 13 is an interference ...
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The invention relates to a sealing plate of a lithium battery, in particular to a sealing plate of a high capacity and power lithium battery. The sealing plate comprises a top cover, wherein the top cover is arranged on the top of a cell case, and a safety valve is arranged on the top cover; the safety valve consists of a release hole, an anti-explosion membrane, a seal ring, a clamp ring and a safety hood; the anti-explosion hole is of a stepped hole structure with a narrow top and a wide bottom; the anti-explosion membrane is arranged on the lower part of the anti-explosion hole; the clamp ring for compacting the anti-explosion membrane in the stepped position of the anti-explosion hole is arranged on the lower side of the anti-explosion membrane; the outer ring of the clamp ring is in interference fit with the anti-explosion hole; and the seal ring for preventing air escape is arranged under the clamp ring. According to the required bursting pressure, the manufactured shape and thedepth of an annular groove is controlled freely to achieve the aim of controlling the bursting pressure. Furthermore, the welding stress is overcome. The sealing plate of the high capacity and power lithium battery has the beneficial effects of overcoming the defects of complicated manufacture and unstable bursting pressure of the conventional anti-explosion technology (device), and a scrap slot for bursting can also be made into a cross-shaped slot.
Description
technical field [0001] The invention relates to a lithium battery sealing plate, in particular to a high-capacity power lithium battery sealing plate. Background technique [0002] In recent years, due to the miniaturization, portability and portability of electronic equipment such as cameras, power tools, notebook computers, and electric bicycles, the drive power for these electronic equipment is also developing in the direction of high capacity, high safety, and portability. Lithium-ion steel case fully enclosed batteries are increasingly widely used due to their high capacity and excellent load characteristics. [0003] Lithium-ion batteries are the power storage components of lithium batteries. When they are in use, due to factors such as charger failure and overcharging, abnormal gases will be generated along with the internal chemical reactions of the battery, resulting in excessive internal pressure of the battery, resulting in battery failure. Explosion accident. T...
Claims
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IPC IPC(8): H01M2/04H01M2/12
CPCY02E60/12Y02E60/10
Inventor 杨慧苗福远励建炬
Owner 江苏科达利精密工业有限公司