A button-type lithium battery capacitor and its assembly method
An assembly method and capacitor technology, applied in the manufacture of hybrid/electric double layer capacitors, large-sized batteries/battery packs, small-sized batteries/battery packs, etc., can solve low production efficiency, high internal resistance of batteries, and liquid leakage and other problems, to achieve the effect of controllable core quality and improve production efficiency
Active Publication Date: 2020-01-03
EVE ENERGY CO LTD
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Problems solved by technology
[0004] The purpose of the present invention is to provide a button-type lithium battery capacitor and its assembly method to solve the problems of low production efficiency, uncontrollable quality and high internal resistance of the battery and leakage of the existing button-type lithium battery capacitor.
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[0033] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.
[0034] The invention provides a button type lithium battery capacitor, such as figure 2 As shown, the button-type lithium battery capacitor includes a positive electrode case 1 and a negative electrode case 2 that are interlocked with each other. The positive electrode case 1 and the negative electrode case 2 are formed with a placement cavity (not shown in the figure), and a winding core is arranged in the placement cavity. 3, can refer to Figure 4 , the winding core 3 includes a positive electrode sheet 31, a separator (not shown in the figure) and a negative electrode sheet 32, and the negative electrode sheet 32, the separator, and the positive electrode sheet 31 are stacked sequentially from top to bottom and wound from one end to the other end along the length direction A winding core 3 is ...
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The invention belongs to the technical field of lithium battery capacitors, and discloses a button-type lithium battery capacitor and an assembly method. The button-type lithium battery capacitor includes a positive electrode shell and a negative electrode shell that are interlocked with each other. The positive electrode shell and the negative electrode shell form a placement cavity. The placement cavity There is a winding core inside, and the positive end and the negative end of the winding core form an angle with the winding direction of the winding core and extend away from each other, and are folded to the upper side and the lower side of the winding core respectively, and the positive and negative ends are They are respectively connected to the inside of the positive electrode casing and the negative electrode casing, and the cavity is filled with electrolyte or polymer electrolyte membrane. The positive end and the negative end of the winding core respectively protrude at an angle and away from the winding direction of the winding core. When the winding core is wound, the winding core can be directly glued to the winding direction without pulling out the winding needle. Gluing can be completed, semi-automatic winding is realized, production efficiency is improved, and the quality of the winding core is controllable. The positive and negative terminals are spot-welded on the inside of the positive and negative shells, so that the positive and negative shells are well sealed and the occurrence of battery leakage is reduced.
Description
technical field [0001] The invention relates to the technical field of lithium battery capacitors, in particular to a button-type lithium battery capacitor and an assembly method thereof. Background technique [0002] At present, button-type lithium battery capacitors are usually formed by winding the positive and negative pole pieces, and then spot welding the tabs of the positive and negative pole pieces to the positive and negative pole shells. In the process of winding the core, such as figure 1 As shown, the two ends of the winding core 100 protrude along the winding direction, and then stick the adhesive tape 101 on the winding winding core 100 along the vertical winding direction, in order to lead out the positive and negative electrode pieces, so as to connect with the positive and negative electrode shells To connect, it is necessary to pull out the roll needle to apply glue when applying glue. Therefore, the current button-type lithium battery capacitors all adopt...
Claims
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IPC IPC(8): H01M2/02H01M10/0587H01G11/82H01G11/80H01G11/84H01M50/10
CPCH01M10/0587H01G11/80H01G11/82H01G11/84H01M50/10Y02E60/13Y02E60/10Y02P70/50
Inventor 高冠雄赵易卜芳祝媛刘建华刘金成
Owner EVE ENERGY CO LTD