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Battery charging circuit and control circuit and control method thereof

A battery charging and control circuit technology, applied in secondary battery charging/discharging, battery circuit devices, charging/discharging current/voltage regulation, etc., can solve problems such as system instability and unsmooth switching, and improve transient response Performance, smooth control switching, and improved system stability

Active Publication Date: 2018-06-12
CHENGDU MONOLITHIC POWER SYST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the non-smooth switching between the control loops of different variables can cause the problem of system instability

Method used

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  • Battery charging circuit and control circuit and control method thereof
  • Battery charging circuit and control circuit and control method thereof
  • Battery charging circuit and control circuit and control method thereof

Examples

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Embodiment Construction

[0020] Specific embodiments of the present invention will be described in detail below, and it should be noted that the embodiments described here are only for illustration, not for limiting the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. It will be apparent, however, to one of ordinary skill in the art that these specific details need not be employed to practice the present invention. In other instances, well-known circuits, materials or methods have not been described in detail in order to avoid obscuring the present invention.

[0021] Throughout this specification, reference to "one embodiment," "an embodiment," "an example," or "example" means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in the present invention. In at least one embodiment. Thus, appearances of the phrases "in on...

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Abstract

The invention discloses a battery charging circuit and a control circuit and a control method thereof. The battery charging circuit comprises a switching circuit which has at least one switching tube,the switching circuit provides system voltage for the load and charges a battery, and the control method comprises the steps that first difference value signals are produced on the basis of the difference values of charging current feedback signals and charging current reference signals; second difference value signals are produced on the basis of the difference values of the battery voltage feedback signals and the battery voltage reference signals; one of the first difference value signals, the second difference value signals and zero signals is selected as a difference value signal on thebasis of the battery voltage; the difference value signal is subjected to proportional integral to produce an offset signal; the control signals of the at least one switching tube in the switching circuit are adjusted according to the offset signal so as to adjust the output signals of the battery charging circuit to expected values.

Description

technical field [0001] Embodiments of the present invention relate to an electronic circuit, and more specifically, to a battery charging circuit, a control circuit and a control method thereof. Background technique [0002] With the development of electronic technology, computer systems have been more and more widely used in people's daily life, ranging from small handheld electronic devices such as smart phones, tablet computers, e-books, digital cameras, to large ones for specific occasions Advanced electronic equipment, such as servers, base stations, and other consumer electronics, such as notebook computers, desktop computers, netbooks, etc., all require computer systems. In a computer system, a central processing unit (CPU) is used to interpret computer instructions and process data in computer software, and a voltage regulator (VR) is used to provide a power supply voltage for the central processing unit. When there is no external power supply, a battery is required...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H01M10/42H01M10/44
CPCH02J7/0077H01M10/4257H01M10/44H02J7/007H01M2010/4271H02J7/00H02J7/0071Y02E60/10H02J7/007182
Inventor 罗苏华马朋朋
Owner CHENGDU MONOLITHIC POWER SYST
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