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Battery charging circuit and its control circuit and control method

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: 2021-04-13
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 its control circuit and control method
  • Battery charging circuit and its control circuit and control method
  • Battery charging circuit and its control circuit and control method

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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PUM

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Abstract

Disclosed are a battery charging circuit, a control circuit and a control method thereof. The battery charging circuit includes a switching circuit having at least one switching tube, the switching circuit provides a system voltage for a load and charges a battery, and the control method includes: based on the difference between the charging current feedback signal and the charging current reference signal, Generate a first difference signal; generate a second difference signal based on the difference between the battery voltage feedback signal and the battery voltage reference signal; select the first difference signal, the second difference signal and the zero signal based on the battery voltage One is a difference signal; the difference signal is proportionally integrated to generate a bias signal; and the control signal of at least one switch tube in the switch circuit is adjusted according to the bias signal to adjust the output signal of the battery charging circuit to a desired value.

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 Patents(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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