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Method and system for charging control of lithium cell

A charging control method and technology for lithium batteries, which are applied in the charging/discharging of secondary batteries, battery circuit devices, and repair/maintenance of secondary batteries, etc., can solve problems affecting the service life of lithium batteries, etc. High performance and reduce pollution

Active Publication Date: 2008-01-09
宏电脑上海
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  • Abstract
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Problems solved by technology

[0013] The invention provides a charging control method and a control system to solve the problem that the existing charging control method affects the service life of lithium batteries

Method used

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  • Method and system for charging control of lithium cell
  • Method and system for charging control of lithium cell

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Embodiment Construction

[0033] The optimal storage capacity of a lithium battery is at 40% to 50% of the state of charge, and the current method of controlling charging in a mobile power system almost always keeps the capacity of the lithium battery at more than 95% of the full charge capacity, which not only accelerates The self-depletion of the lithium battery did not reach the expected cycle life, and also wasted the charging energy.

[0034] In order to solve this problem, the present invention first provides a charging control method, as shown in steps S3 to S6 in Figure 2, the optimal charging capacity of the lithium battery is used as the upper limit of the charging capacity, and the charging capacity is set to maintain the normal operation of the electronic product. The lowest capacity for a certain period of time is used as the lower limit value. When it is detected that the lithium battery capacity is lower than the lower limit value, it starts charging, and stops charging when it is charged...

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Abstract

The invention relates to electronic product, especially disclosing a control method and system for Li battery charging in an electronic product. And a charging control method comprises the steps of: A1. detecting Li battery capacity and starting charging the Li battery and executing step A2 when the capacity is equal to or less than a first lower limit value; and A2. real-time detecting the Li battery capacity in the charging course and stopping charging and returning to the step A1 when the capacity is equal to or more than a first upper limit value. And it can combine with the existing techniques, meeting different occasions. And the charging system comprises Li battery module, charging module, detection module and storage module, as well as two control modules and charging mode management module.

Description

technical field [0001] The invention relates to electronic products, in particular to a control method and system for charging lithium batteries in electronic equipment. Background technique [0002] With the development of electronic technology, more and more portable electronic products have entered daily life, such as mobile phones, portable computers and walkmans. Now, high-end electronic products generally use lithium batteries with better energy storage performance for power supply. When the existing electronic product controls the charging of the lithium battery, it always keeps the lithium battery at more than 95% of the full charge capacity. Taking a portable computer as an example, the lithium battery module of the portable computer includes a set of series and parallel lithium battery packs. The structure of the existing charging system is shown in Figure 1, including: [0003] 1. The charging module for charging the lithium battery pack; [0004] 2. A detection...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H01M10/44
CPCY02E60/12Y02E60/10
Inventor 李云杰
Owner 宏电脑上海
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