Method for manufacturing cylindrical battery capable of improving battery capacity
A cylindrical battery and a manufacturing method technology, applied in sustainable manufacturing/processing, secondary battery, final product manufacturing, etc., can solve the problem of low utilization rate of the internal space of the battery cylinder 1, so as to increase the use space and improve the The effect of battery capacity
Active Publication Date: 2014-04-30
ZHENGZHOU BAK BATTERY CO LTD
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Problems solved by technology
Therefore, in the existing cylindrical battery manufacturing method, the utilization rate of the internal space of the battery cylinder 1 is low, and in order to meet the demand for large-capacity batteries of electronic products, the battery capacity still needs to be improved.
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[0038] The present invention will be further described in detail below through specific embodiments and in conjunction with the accompanying drawings.
[0039] The present invention relates to a method for manufacturing a cylindrical battery that can increase battery capacity. The method for manufacturing a circular battery uses a battery pole group 13 with a height of h1+Δh into a battery cylinder 11 of a cylindrical battery; The open end of the cylinder 11 forms an annular groove 112 with a height of h2; the combined cap 12 with a height of h3 is placed above the annular groove 112 in the battery cylinder 11, the combined cap 12 is connected to the battery pole group 13, and the The combined cap 12 is fixed and sealed on the battery cylinder 11 . In this example, the height of the battery cylinder 11 is H+Δh=(h1+Δh)+h2+h3, where H is the standard height of a cylindrical battery.
[0040] The bottom of the battery cylinder 11 in this example is closed, and the top has an ope...
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Abstract
A method for manufacturing cylindrical battery capable of improving the battery capacity, includes following steps: increasing the height h1 of an electrode group (13) by ?h and packing the electrode group (13) into a battery can (11); forming an annular groove (112) with height h2 at the open end of the battery can (11); connecting a combination cap (12) with height h3 with the electrode group (13) and placing the combination cap (12) above the annular groove (112) with height h2, then sealing the battery can (11); exerting force F2 to compress the annular groove (112) and combination cap (12) with total height h2+h3 by ?h, so as to improve the battery capacity by increasing height of the electrode group (13) ?h without changing battery standard height. The method of the invention reduces the height of the annular groove (112) by compression process, therefore increases the space holding the electrode group (13) within the battery.
Description
technical field [0001] The invention relates to the field of battery manufacturing, in particular to a method for manufacturing a cylindrical battery. Background technique [0002] Please refer to Figure 1 to Figure 7 A cylindrical battery generally includes a battery cylinder 1, a battery pole group 3 with a height h1 formed by winding in the battery cylinder 1, a combined cap 2 installed on the top of the battery cylinder 1, and a battery pole group 3 arranged in the middle of the battery cylinder 1. Cylindrical support frame 4 etc. parts. The bottom of the battery cylinder 1 is usually provided with a bottom insulating ring 7 for separating the positive / negative terminal 52 from the battery pole group. Top insulating ring6. The top insulating ring 6 is pressed on the top of the battery pole group 3 and stuck under the annular groove 12 with a height h2 formed on the battery cylinder 1 . The center of the top insulating ring 6 is provided with a tab hole that allows th...
Claims
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IPC IPC(8): H01M10/38H01M50/147H01M50/593
CPCH01M10/049H01M2/04H01M2/046Y02E60/10H01M50/147H01M50/152Y02P70/50H01M50/593
Inventor 任灿王春光陈保同
Owner ZHENGZHOU BAK BATTERY CO LTD