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A charging current control method and device based on temperature parameters

A charging current and control method technology, which is applied to battery circuit devices, circuit devices, collectors, etc., to avoid excessive temperature, reduce hardware costs, and ensure charging efficiency

Active Publication Date: 2021-10-15
深圳市晶讯技术股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The present invention does not increase occupied PCB board space and hardware cost

Method used

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  • A charging current control method and device based on temperature parameters
  • A charging current control method and device based on temperature parameters

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Embodiment Construction

[0035] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0036] figure 1 It is an overall flow chart of the charging current control method based on temperature parameters according to the embodiment of the present invention. The method includes the following steps:

[0037] S1: For a fully discharged battery, charge it at several rated ambient temperatures until the battery temperature reaches the predetermined temperature rise limit, and take the temperature of the charging circuit at t...

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Abstract

The invention discloses a charging current control method and device based on temperature parameters. The present invention controls the switching of the charging current based on the ambient temperature and the temperature of the charging circuit, and determines the preset charging current values ​​according to the ambient temperature, so that it can adapt to complex factors such as the ambient temperature in specific application scenarios, ensuring The temperature increase of the charging circuit is in line with expectations, avoiding adverse effects caused by excessive temperature. The invention does not increase occupied PCB board space and hardware cost.

Description

technical field [0001] The invention relates to the technical field of battery charging process protection for electronic products, in particular to a charging current control method and device based on temperature parameters. Background technique [0002] Electronic products generally use lithium batteries as power sources, and the charging circuit of lithium batteries is sensitive to temperature factors. Once the charging circuit overheats, it will not only affect the charging effect and product life, but may cause the product shell to overheat and even burn the motherboard, and there are also potential safety hazards . [0003] At present, the charging circuit of the lithium battery includes two control methods: constant current charging and constant voltage charging. First, the lithium battery is charged with a constant current. The relationship is particularly close. As the current battery capacity continues to increase and the charging speed requirements continue to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
CPCH02J7/007192
Inventor 张灿林邱永宁
Owner 深圳市晶讯技术股份有限公司