Battery assembly method and battery assembled using the method

Abstract

The invention provides a battery assembly method. The battery assembly method includes: installing the positive electrode piece in the negative electrode shell; dripping electrolyte solution on the positive electrode piece to form a first electrolyte solution layer; covering the first electrolyte solution with a diaphragm layer; the lithium sheet is installed on the surface of the diaphragm away from the positive electrode sheet; the positive electrode case is covered and the negative electrode case is fitted. The present invention also provides a battery assembled by the above-mentioned battery assembly method, wherein the battery includes a negative electrode case, a positive pole piece, a first electrolyte layer, a separator, a lithium sheet, and a positive pole case, and the positive pole piece is fixed on the negative pole In the shell, the first electrolyte layer is set on the positive pole piece, the diaphragm covers the first electrolyte layer, the lithium sheet is installed on the surface of the diaphragm away from the positive pole piece, and the positive electrode The case covers and fits the negative electrode case. The battery assembly method of the present invention improves the performance of the assembled battery. The battery of the invention has better discharge performance.

Description

technical field [0001] The invention relates to the field of battery technology, in particular to a battery assembly method and a battery assembled using the method. Background technique [0002] The existing battery assembly method, such as the assembly method of the button-type lithium-ion battery, adopts the assembly method of fixing the positive electrode piece in the positive electrode case, which is not only difficult to operate, but also has a low assembly pass rate, and the positive electrode piece is easily placed in the positive electrode case. Position offset occurs, and an excessive position offset distance will reduce the performance of the battery; at the same time, during the sealing process of the battery using this assembly method, the electrolyte in the battery is easy to seep out of the seal, which increases the internal resistance of the battery. further degrades the performance of the battery. Contents of the invention [0003] In view of this, it is ...

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Problems solved by technology

[0002] The existing battery assembly method, such as the assembly method of the button-type lithium-ion battery, adopts the assembly method of fixing the positive electrode piece in the positive electrode case, which is not only difficult to operate, but also has a low assembly pass rate, and the positive electrode piece is easily placed in the positive electrode case. Position offset occurs, and an excessive position offset distance will reduce the performance of the battery; at the same time, during the sealing process of the battery using this assembly method, the electrolyte in the battery is easy to seep out of the seal, which increases the internal resistance of the battery. further degrades the performance of the battery

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