Electrochemical device and electronic device
A technology of electrochemical and conductive parts, applied in the direction of circuits, electrical components, battery pack components, etc., can solve the problems of poor sealing effect of packaging bags, poor bonding effect of adhesive parts and conductive parts, etc.
Pending Publication Date: 2021-09-21
NINGDE AMPEREX TECH
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Problems solved by technology
[0004] The embodiment of the present application provides an electrochemical device and an electronic device to improve the problem of poor sealing effect of the packaging bag caused by the poor bonding effect of the adhesive part and the conductive part
Method used
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[0029] In order to make the purpose, technical solution and advantages of the present application clearer, the technical solution of the present application will be clearly described below in conjunction with embodiments and accompanying drawings. Apparently, the described embodiments are only some of the embodiments, not all of them. Based on the embodiments in the present application, the following embodiments and technical features thereof may be combined with each other under the condition of no conflict.
[0030] Please also refer to Figure 1 to Figure 3 As shown, in an embodiment of the present application, the electrochemical device 10 includes a packaging bag 11 , an electrode assembly (not shown) and tabs 13 .
[0031] The packaging bag 11 surrounds the shape of the electrochemical device 10 and can be used to define the appearance of the electrochemical device 10 . The packaging bag 11 is formed with a storage cavity (not shown in the figure), and the internal com...
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The invention discloses an electrochemical device and an electronic device. The electrochemical device comprises an electrode assembly, a package and a tab, the electrode assembly is accommodated in a packaging bag, and the packaging bag comprises a packaging area; the tab extends out of the packaging area; the tab comprises a conductive piece and a bonding piece, the conductive piece is electrically connected with the electrode assembly, and the bonding piece is arranged in the packaging area and located between the conductive piece and the packaging bag; and the bonding piece comprises an exposed part extending out of the packaging area, the exposed part comprises a first step face, second step faces located on the two sides of the first step face and a first connecting face connecting the first step face and the second step faces in the first direction, the first step face, the first connecting face and the second step faces form a first step part, the first step face is arranged on the surface of the conductive piece, the second step face is arranged on the surface of the conductive piece, and the first direction is substantially perpendicular to the extension direction of the conductive piece. The step-shaped design can exhaust gas at the joints of the bonding piece and the left and right side surfaces of the conductive piece, so that the sealing effect of the bonding piece and the conductive piece is improved, and the risk of electrolyte leakage is reduced.
Description
technical field [0001] The present application relates to the technical field of batteries, in particular to an electrochemical device and an electronic device. Background technique [0002] The battery includes an electrode assembly and a tab. The electrode assembly is arranged in a packaging bag. The tab includes a conductive part and an adhesive part. The conductive part is electrically connected to the electrode assembly and extends out of the packaging bag. Sealing is achieved by bonding between the connector and the packaging bag (such as aluminum-plastic film). The bonding effect of adhesive parts and conductive parts is one of the key factors affecting the sealing effect of packaging bags. [0003] In the actual production process, the conductive part is a structural element with a certain thickness. The bonding effect between the adhesive part and the opposite sides of the conductive part along the width direction not only has high requirements on the production pr...
Claims
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Login to View More IPC IPC(8): H01M50/533H01M50/528H01M50/186
CPCH01M50/533H01M50/528H01M50/186Y02E60/10H01M50/105
Inventor 李方方
Owner NINGDE AMPEREX TECH