Electronic device and manufacturing method thereof
A technology for electronic devices and batteries, applied in the field of electronic equipment, can solve the problems of poor sealing reliability, occupying battery space, and reducing battery safety.
Pending Publication Date: 2020-10-27
EVE ENERGY CO LTD
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- Claims
- Application Information
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Problems solved by technology
Existing lithium-ion batteries have the following defects: 1. The side extrusion seal occupies the internal space of the battery inside the casing, resulting in a reduction in battery capacity; 2. The outer diameter extrusion type seal has poor sealing reliability due to the large sealing area ;3. The side extrusion seal has no explosion-proof function, and the safety of the battery will decrease when the sealing is high; 4. The tabs drawn from the upper and lower ends of the wound battery will occupy the space inside the battery
Method used
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[0036] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved more clear, the technical solutions of the embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only the present invention. Some embodiments, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the protection scope of the present invention.
[0037] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be interpreted broadly, for example, they may be fixedly connected, detachably connected, or integrated ; It can be a mechanical connection or an electrical connection; it can be directly connected or indirectly conn...
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Abstract
The invention discloses an electronic device and a manufacturing method thereof. The electronic device comprises a first shell, a second shell, a cover plate and a battery cell, and the first shell comprises a bottom plate and a first surrounding wall annularly arranged on one side of the bottom plate. The second shell comprises a top plate and a second surrounding wall annularly arranged on one side of the top plate. The first surrounding wall is sleeved with the second surrounding wall, a lead-out hole is formed in the top plate, the cover plate blocks the lead-out hole, one of a positive tab and a negative tab of the battery cell is connected with the part, directly facing the lead-out hole, of the cover plate, and the other one of the positive tab and the negative tab is clamped between the first surrounding wall and the second surrounding wall. The positive tab or the negative tab of the electronic device is simple in leading-out mode and high in sealing reliability, a shell doesnot need to be extruded, and the internal space utilization rate of the electronic device is increased.
Description
Technical field [0001] The invention relates to the technical field of electronic equipment, in particular to an electronic device and a manufacturing method thereof. Background technique [0002] Small lithium-ion batteries are widely used in various electronic products such as calculators and electronic watches because of their small size, stable discharge voltage, and high battery voltage. At present, common small lithium-ion batteries usually use side extrusion to seal the positive and negative cases. The positive and negative ears of the wound cell inside the battery are usually drawn from the upper and lower ends of the wound cell to the positive electrode. The case and the negative electrode case are connected. Existing lithium-ion batteries have the following defects: 1. The sides are extruded and sealed, which occupies the internal space of the battery inside the casing, resulting in a reduction in battery capacity; 2. The outer diameter extrusion seal has a large seali...
Claims
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IPC IPC(8): H01M2/02H01M2/08H01M2/26H01M10/0587
CPCH01M10/0587Y02E60/10Y02P70/50
Inventor 刘亮亮祝媛刘建华刘金成
Owner EVE ENERGY CO LTD