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Battery lamination structure, production method thereof and application
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A technology of lamination structure and production method, applied in the direction of lithium battery, secondary battery, electrochemical generator, etc., can solve the problems of uneven diaphragm, uncontrollable diaphragm tension, short-circuit battery, etc.
Inactive Publication Date: 2019-06-07
温在东
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Problems solved by technology
This lamination method is prone to unevenness of the diaphragm during the lamination process. In addition, the tension of the diaphragm during the lamination process is uncontrollable and the tension is too large, which may easily cause severe stretching of the diaphragm, resulting in short circuits and other battery failures.
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Embodiment 1
[0023] A stacked battery structure 100 includes several positive electrode sheets 111 and several negative electrode sheets 112 arranged alternately, and a diaphragm sheet 113 is provided between the adjacent positive electrode sheets 111 and the negative electrode sheets 112 . Through the above settings, the battery stack structure completely solves the technical problems of uncontrollable diaphragm tension, excessive diaphragm tension and diaphragm stretching during the lithium battery stacking process.
[0024] The present invention also provides a production method of the battery stack structure 100, including the following steps,
[0025] Step S1: cutting the diaphragm into a plurality of diaphragm sheets 113;
[0026] Step S2: stacking the positive electrode sheet 111 , the separator sheet 113 and the negative electrode sheet 112 to obtain the battery stack structure 100 .
[0027] The present invention also provides an application of the battery stack structure 100 in ...
Embodiment 2
[0029] The difference between embodiment 2 and embodiment 1 lies in the production method of the above-mentioned battery stack structure 100, and the production method of the battery stack structure 100 includes the following steps,
[0030] Step S1: cutting the diaphragm into a plurality of diaphragm sheets 113;
[0031] Step S2: stacking the positive electrode sheet 111, the separator sheet 113 and the negative electrode sheet 112 to obtain a single cell 110; stacking several of the single cells 110 to obtain the battery stack structure 100.
[0032] see figure 2 The monomer 110 includes a diaphragm 113 , a negative diaphragm 112 , another diaphragm 113 and a positive diaphragm 111 which are stacked in sequence.
Embodiment 3
[0034] The difference between embodiment 3 and embodiment 1 and embodiment 2 lies in the production method of the above-mentioned battery stack structure 100, and the production method of the battery stack structure 100 includes the following steps,
[0035] The positive electrode sheet 111 , the separator sheet 113 and the negative electrode sheet 112 are laminated to obtain two types of monomers; several monomers are laminated to obtain the battery stack structure 100 .
[0036] see image 3 and Figure 4 , the monomers are two types; the two monomers are the first monomer 110a and the second monomer 110b respectively, and the first monomer 110a and the second monomer 110b are stacked alternately; the first The single body 110 a includes a diaphragm 113 , a positive pole 111 , another diaphragm 113 , a negative pole 112 , another diaphragm 113 and another positive pole 111 which are sequentially stacked. The second unit 110b includes a diaphragm 113 , a negative pole 112 ,...
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Abstract
The invention relates to the technical field of batteries, and in particular to a battery lamination structure, a production method thereof and application. The battery lamination structure comprisesa plurality of positive pole pieces and a plurality of negative pole pieces arranged alternately; and a diaphragm piece is arranged between the positive pole piece and the negative pole piece which are adjacent. Through the above arrangement, the battery lamination structure completely solves the technical problems that the diaphragm tension is uncontrollable, the diaphragm tension is too large, and the diaphragm is stretched during a lithium battery lamination process. The invention also provides a method of producing the above battery lamination structure. The method comprises the followingsteps: S1, the diaphragm is cut into a plurality of diaphragm pieces; and S2, the positive pole pieces, the diaphragm pieces and the negative pole pieces are laminated to produce the battery lamination structure; or, the positive pole pieces, the diaphragm pieces and the negative pole pieces are laminated to produce a plurality of monomers, and the plurality of monomers are laminated to produce the battery lamination structure. The invention also provides the application of the above battery lamination structure in a lithium battery, a nickelhydrogen battery, a hydrogen fuel battery and a lithiumsulfur battery.
Description
technical field [0001] The invention relates to the field of battery technology, in particular to a battery stack structure and its production method and application. Background technique [0002] In the structure of a battery, the separator is one of the key inner components. The separator is located between the positive and negative electrodes, and its main function is to separate the active materials of the positive and negative electrodes to prevent the short circuit of the two electrodes due to contact; in addition, during the electrochemical reaction, it can maintain the necessary electrolyte and form a channel for ion movement. [0003] see Figure 5 , the conventional battery stack structure 200 includes a separator 210, a plurality of positive pole pieces 220 and a number of negative pole pieces 230, wherein the positive pole pieces 220 and the negative pole pieces 230 are arranged alternately. In addition, in the traditional lithium battery stacking process, the s...
Claims
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Application Information
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