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Battery formation method and battery

A technology of battery formation and battery charging, which is applied in the manufacture of secondary batteries, electrochemical generators, and electrolyte batteries, etc., can solve the problems of incomprehension, incomplete SEI film, and the service life of batteries does not reach consumers.

Active Publication Date: 2021-09-03
SHENZHEN EPT BATTERY
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Problems solved by technology

[0005] The purpose of the embodiment of the present invention is to provide a battery formation method to solve the technical problem that the SEI film formed by the existing battery formation method is incomplete and not dense, resulting in the service life of the battery not meeting the psychological expectations of consumers

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Embodiment Construction

[0036] In order to enable those skilled in the art to better understand the solutions of the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only It is an embodiment of a part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present invention.

[0037] It should be noted that the terms "first" and "second" in the description and claims of the present invention and the above drawings are used to distinguish similar objects, but not necessarily used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ...

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Abstract

The invention discloses a battery formation method and a battery. The method comprises: controlling the surface pressure of the battery to be the first pressure, charging the battery with the first current, the charging time being the first charging time, and keeping the first charging interval time after charging. The interval time is long, and pulse charging is continued until the voltage reaches the first voltage; the surface pressure of the battery is controlled to be the second pressure, and the battery is charged with the second current, and the charging time is the second charging time, and the interval time after charging is Keeping the second interval, continuing pulse charging until the voltage reaches the second voltage; controlling the surface pressure of the battery to be the third pressure, charging the battery with the third current, and charging the battery for the third charging time, and charging The last interval is kept for the third interval, and pulse charging is continued until the voltage reaches the third voltage. The embodiment of the present invention solves the technical problem that the SEI film formed by the existing chemical conversion method is incomplete and not dense.

Description

technical field [0001] The invention relates to the field of battery technology, in particular to a battery formation method and a battery. Background technique [0002] In recent years, with the rapid increase in the types of household appliances, the requirements for battery energy density, weight, self-discharge, and safety have also increased. Conventional Ni-Cd (nickel cadmium), Ni-MH (nickel hydrogen) and other cylindrical The electrical performance, specifications and safety performance of the battery can no longer meet the needs of the market. The lithium-ion battery adopts nickel-plated steel shell or composite aluminum-plastic film as the shell, which not only has more choices in shape and size, but also can be changed according to customer requirements. Compared with other batteries, it has higher energy density and lighter weight. The discharge is smaller and the safety is better, so the share of lithium-ion batteries in the battery market is also increasing rap...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/0525H01M10/058
CPCY02E60/10Y02P70/50
Inventor 王守军杨晓亮梁德声赵培成杨银娥
Owner SHENZHEN EPT BATTERY
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