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Device and method for charging USB

A charging device and rechargeable battery technology, applied in circuit devices, battery circuit devices, charging/discharging of secondary batteries, etc., can solve problems such as affecting the use time of electronic equipment, affecting battery life, insufficient battery life, etc., and improving life expectancy. and the effect of battery life

Inactive Publication Date: 2012-05-30
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the electronic device is charged when it is turned on, it also consumes a certain amount of battery power, which leads to the situation that it is not fully charged, which not only affects the battery life, but also makes the battery life insufficient, affecting the use time of the electronic device.

Method used

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  • Device and method for charging USB
  • Device and method for charging USB
  • Device and method for charging USB

Examples

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Embodiment Construction

[0019] see figure 1 , is a schematic diagram of a USB charging device of the present invention, the USB charging device is set in an electronic device, and is used to charge a rechargeable battery in the electronic device. The USB charging device includes a charging circuit chip 10, a battery interface unit 20 connected to the charging circuit chip 10, a voltage detector 30 connected to the battery interface unit 20, and a control chip 40, the control chip 40 is connected with the voltage detector 30 and the charging circuit chip 10 .

[0020] The charging circuit chip 10 is provided with charging circuits with different charging modes, which can select different charging circuits according to different charging instructions.

[0021] In this embodiment, the charging modes include normal charging mode, fast charging mode and constant voltage charging mode. Both the normal charging mode and the fast charging mode are constant current charging, wherein the charging current of ...

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Abstract

The invention relates to a USB charging device arranged in an electric device for charging rechargeable batteries of the electric device. The USB charging device comprises a charging circuit chip, a battery interface unit which is connected with the charging circuit chip, a voltage detector and a control chip. The charging circuit chip is internally provided with charging circuits of different charging modes for selecting charging circuits according to charging commands so as to switch the charging modes. A positive pole end of the battery interface unit is connected with the charging circuit chip, and a negative pole end is grounded. A positive pole and a negative pole of the charging battery are respectively arranged in the battery interface unit corresponding to the positive pole end and the negative pole end of the battery interface unit. The voltage detector is used for detecting the battery voltage in the battery interface unit and feeding back the battery voltage information to the control chip. The control chip is used for sending a corresponding charging command according to the battery voltage information of the voltage detector so s to switch charging modes and simultaneously sending out power-on and power-off commands to the electric device by matching with corresponding charging modes.

Description

technical field [0001] The invention relates to a charging device and a charging method, in particular to a charging device and a charging method for charging with a USB interface. Background technique [0002] Nowadays, USB (Universal Serial BUS: Universal Serial Bus) interface has been widely used in various electronic devices such as mobile phones and digital cameras. There are special chargers corresponding to the interface, and these electronic devices can be directly connected to the computer through the USB interface to charge through the computer. According to the USB protocol specification, the USB interface can provide a current of 100 mA to 500 mA for charging. Generally, when an electronic device is charging, when the electronic device is not communicating with the host computer, the computer only provides a current of up to 100 mA for charging. Electronic devices are charged, so the charging speed is much slower. [0003] Nowadays, many electronic devices are ...

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 陈建亨
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD
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