Circuit for realizing fast and slow charging in linear circuits and charging control method

A charging control method and charging control technology, which are applied in the direction of secondary battery charging/discharging, circuit devices, battery circuit devices, etc., can solve the problems of potential safety hazards and dangers, and achieve the elimination of potential safety hazards, protection from overcharging, and guarantee The effect of charging speed

Inactive Publication Date: 2010-12-08
SUNWODA ELECTRONICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Aiming at the disadvantages of the above-mentioned battery charging circuit in the prior art that when the battery voltage is low, a large current will be generated for charging, which may cause danger and have potential safety hazards, the present invention provides a charging circuit, which includes a charging circuit. A control circuit, a charging switch circuit, a charging output circuit, and a voltage detection circuit, wherein the charging switch circuit includes a fast charging channel and a slow charging c

Method used

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  • Circuit for realizing fast and slow charging in linear circuits and charging control method
  • Circuit for realizing fast and slow charging in linear circuits and charging control method
  • Circuit for realizing fast and slow charging in linear circuits and charging control method

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Embodiment Construction

[0016] This embodiment is a preferred implementation mode of the present invention, and other principles and basic structures that are the same or similar to this embodiment are within the protection scope of the present invention.

[0017] Please see attached figure 1 , the circuit in the present invention mainly includes a charging control circuit, a charging switch circuit, a charging output circuit, and a voltage detection circuit, wherein the charging control circuit includes a voltage conversion unit and a control unit. In this embodiment, the charging control circuit, charging output The circuit and the voltage detection circuit are the same as those in the prior art. The voltage conversion unit in the charging control circuit converts the external power supply into a power supply that can be used for charging the battery. It mainly converts the external voltage into a charging voltage. When the control unit controls charging The unit for turning on or off the switch ci...

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Abstract

The invention discloses a circuit for realizing fast and slow charging in linear circuits and a charging control method. In the circuit, a fast charging channel and a slow charging channel are adopted to charge a battery; when the voltage of the battery is low, the slow charging channel is adopted for charging; and when the voltage of the battery is normal, a fast charging mode is adopted for charging. The circuit and the method can eliminate the potential safety hazard, prevent the damage of the battery, ensure the charging speed and simultaneously prevent overcharging.

Description

technical field [0001] The invention discloses a battery charging circuit and a charging control method, in particular to a circuit and a charging control method for realizing fast and slow charging of a battery in a linear circuit. Background technique [0002] With the development of science and technology, electronic products are more and more widely used in people's daily life, especially consumer electronic products, which have become a necessity in people's life. At present, consumer electronic products mostly use lithium batteries for power supply, and then there is a problem, that is, the charging of lithium batteries. In the charging circuit in the prior art, a switch circuit is provided between the charging control circuit and the charging output circuit, and a voltage detection circuit for detecting the battery voltage is provided in the circuit at the same time, when the voltage detection circuit detects that the voltage is fully charged When charging, the contr...

Claims

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Application Information

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IPC IPC(8): H02J7/00H01M10/44
CPCY02E60/10
Inventor 黄汉彬
Owner SUNWODA ELECTRONICS
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