Insulation washer of cylindrical battery and cylindrical battery with the same
A cylindrical battery and insulating pad technology, applied in battery pack parts, circuits, electrical components, etc., can solve problems such as safety hazards and short circuits, and achieve the effect of improving safety performance and preventing warpage and deformation.
Active Publication Date: 2011-03-30
国金汽车集团有限公司
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AI Technical Summary
Problems solved by technology
Since the narrow portion 33 between the lug hole 32 of the insulating pad 3 and the edge of the insulating pad 3 is relatively narrow, this portion will be significantly warped due to stress concentration, that is, the narrow portion 33 on the insulating pad 3 is The gap between the positioning groove 11 and the positive electrode 21 of the pole core makes direct contact between the positive electrode sheet 21 in the battery pole core 2 and the positioning groove 11 of the steel shell 1, resulting in a short circuit, thereby causing a safety hazard
Method used
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Embodiment Construction
[0012] The present invention will be described in detail below with reference to the accompanying drawings.
[0013] As shown in FIG. 3 , according to a preferred embodiment of the present invention, an insulating pad 3 of a cylindrical battery is provided, and the insulating pad 3 has a liquid injection hole 31 and a tab hole 32 . In addition, the insulating pad 3 also has an opening 34, and the opening 34 communicates from the outside of the tab hole 32 to the edge of the insulating pad 3, that is, it communicates from the arc line outside the tab hole 32 shown in FIG. edge of insulating pad 3.
[0014] Since the above-mentioned opening 33 is formed on the insulating pad 3, when the insulating pad 3 bulges upwards, the opening 33 can be closed, thereby eliminating the stress acting on the narrow portion 33 between the lug hole 32 and the edge of the insulating pad 3, so It can effectively prevent warping and deformation of the narrow portion 33 , so as to prevent the positi...
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The invention provides an insulation pad for a cylindrical battery; the insulation pad is provided with a liquid injection hole and a lug hole; the insulation pad is also provided with an opening; and the opening is communicated to the edge of the insulation pad from the external side of the lug hole. An opening is formed on a narrow part between the lug hole and the edge of the insulation pad, so that a positioning slot is formed on a steel shell and the opening is closed when the insulation pad is plumped upward so as to effectively prevent the narrow part being warped and deformed; and an anode flake in the polar core of the battery can not be partially contacted with the positioning slot of the steel shell, thereby greatly improving the safety performance of the battery. The inventionalso provides a cylindrical battery with the insulation pad.
Description
technical field [0001] The invention relates to the field of batteries, in particular to an insulating pad for a cylindrical battery and a cylindrical battery with the insulating pad. Background technique [0002] As shown in FIG. 1 , a traditional cylindrical battery includes a steel case 1 and a battery pole core 2 packaged in the steel case 1 . The battery pole core 2 is generally formed by winding a positive electrode sheet 21 , a negative electrode sheet 22 and a separator 23 placed between them. There is a positioning groove 11 at the upper end of the steel case 1 for fixing the cap 4 and pressing the battery pole core 2 into the steel case 1 to prevent the battery pole core 2 from moving up and down in the steel case 1 . An insulating pad 3 , a cap 4 and a sealing ring 5 are provided above the battery pole core 2 . The insulating pad 3 is pressed between the positioning groove 11 of the steel case 1 and the battery pole core 2 . The sealing ring 5 is located around...
Claims
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IPC IPC(8): H01M2/00H01M50/107H01M50/184H01M50/186H01M50/593H01M50/627
CPCY02E60/12Y02E60/10
Inventor 车国勇
Owner 国金汽车集团有限公司