Anti-explosion valve structure of lithium ion battery
A lithium-ion battery, explosion-proof structure technology, applied to structural parts, battery pack parts, circuits, etc., can solve the problems of reduced pressure sensitivity, easy accumulation of dust in through holes, loss of explosion-proof effect, etc.
Inactive Publication Date: 2018-09-28
安徽安达新能源材料有限公司
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Problems solved by technology
[0003] The purpose of the present invention is to provide an explosion-proof valve structure for lithium-ion batteries, which solves the problem that the through-holes on the traditional porous cover sheet are easily blocked by dust accumulation, resulting in reduced sensitivity to pressure, and the explosion-proof effect is lost in occasions that need to respond sensitively to pressure. The problem
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[0026] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0027] In the present invention, unless stated otherwise, the orientation words included in the term such as "axial direction, radial direction" only represent the orientation of the term in the normal use state, or are understood by those skilled in the art colloquial term and should not be construed as a limitation of the term.
[0028] like figure 1 Shown: the present invention provides a kind of explosion-proof valve structure of lithium ion battery, and described explosion-proof valve structure comprises valve cover 1, and the acid filter sheet 4 is detachably fixed in described valve cover 1, and the upper end of described valve cover 1 An annular sleeve...
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The invention discloses an anti-explosion valve structure of a lithium ion battery. The anti-explosion valve structure comprises a valve sleeve; an acid filter is detachably fixed in the valve sleeve;an annular sleeve is detachably fixed on the upper end of the valve sleeve; the annular sleeve and the valve sleeve are coaxially arranged; multiple through holes along the radial direction of the annular sleeve are arranged on the circumferential surface of the annular sleeve; an air leakage device is arranged in each through hole; a cover sheet is detachably arranged on the upper end of the annular sleeve; and the cover sheet, the inner wall of the annular sleeve and the acid filter form a closed cavity in a mutual encircling manner. The problems that the sensitivity on pressure is reducedand the anti-explosion effect is lost in an occasion needing sensitive response on pressure due to the fact that the through holes on the traditional porous cover sheet are easily deposited by dust and blocked can be solved.
Description
technical field [0001] The invention relates to the field of lithium ion batteries, in particular to an explosion-proof valve structure for lithium ion batteries. Background technique [0002] At present, lithium-ion batteries have the advantages of high specific energy, many cycle times, and long storage time. They are not only widely used in portable electronic devices such as mobile phones, digital cameras, and laptop computers, but also widely used in electric vehicles and electric bicycles. And large and medium-sized electric equipment such as electric tools. With the development of the lithium battery industry, people's interest in the electric vehicle industry is gradually heating up, followed by people's attention to the performance, large-scale production and safety of lithium-ion batteries, and the performance of large-capacity power batteries in vehicles has a direct impact The overall performance of electric vehicles. Lithium-ion batteries are generally provide...
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IPC IPC(8): H01M2/12H01M50/317H01M50/333
CPCH01M50/317H01M50/333Y02E60/10
Inventor 高博王伟周衡
Owner 安徽安达新能源材料有限公司