Control circuit of charging mode in USB charging stand and method thereof

A charging mode and control circuit technology, applied in battery circuit devices, secondary battery charging/discharging, circuit devices, etc.

Active Publication Date: 2011-04-06
ZTE CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The technical problem to be solved by the present invention is to provide a control circuit and method for the charging mode in the USB charging stand, which is used to solve the problem of AC / DC in the prior art The fast charging mode of the travel charger and the convenient USB charging mode are compatible with high cost and poor adaptability

Method used

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  • Control circuit of charging mode in USB charging stand and method thereof
  • Control circuit of charging mode in USB charging stand and method thereof
  • Control circuit of charging mode in USB charging stand and method thereof

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specific Embodiment approach

[0052] The technical solutions of the present invention will be further described in more detail in conjunction with the accompanying drawings and specific embodiments.

[0053] As shown in FIG. 1 , it is a schematic diagram of the system of the embodiment of the present invention. In the charging control circuit 10, the USB charging stand 110 is a lithium-ion battery charging stand with a USB interface, and its USB interface 105 is a minUSB interface.

[0054] The USB charging stand 110 includes two charging power sources: a standard travel charging source 101 or a computer USB power source 100 . The charging power is used as the USB charging input power of the USB charging stand 110 . The standard brigade charging source 101 may be an AC / DC brigade charging source.

[0055] The data signal pins in the min USB interface 105 include: pin 1 (power supply), pin 2 (D-), pin 3 (D+), pin 4 (ID), and pin 5 (ground).

[0056] The pin 3 of the min USB interface 105 is used as the d...

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Abstract

The invention discloses a control circuit of charging mode in USB charging base and method thereof, which is used for controlling corresponding charging mode of a USB charging base according to different USB charging input power supplies connected with the USB charging base. The control circuit comprises a charging power determination circuit arranged in the USB interface of the USB charging basefor determining the USB charging input power supply connected with the USB charging base and acquiring the type of the USB charging input power supply; and a charging management unit arranged in the USB charging base for setting charging current in a corresponding constant-current stage according to the level state of a detection pin corresponding to the USB charging input power supplied of different types, and entering corresponding charging mode. The invention can add the charging power supply determination circuit in the USB socket interface of the charging base at low cost and enter corresponding charging mode by setting a different charging current according to the different power supplies, thus achieving the control of the charging modes.

Description

Technical field [0001] The invention involves a charging mode control circuit and method, especially the charging mode control circuit and method of a charging mode using a lithium -ion battery charging seat with a USB interface. Background technique [0002] As the function of mobile phones becomes richer and richer, the battery capacity is increasingly required.Therefore, many high -end mobile phones with relatively large energy consumption are equipped with two batteries.Use the charging seat to charge the spare battery.At the same time, because of the small volume and fast information access speed, the MINI USB interface has been widely used in mobile phone design, becoming a reusable interface for many mobile phone chargers / data exchange. [0003] In addition, the latest communications industry standards of the People's Republic of China ("Mobile Communication Handicraft Charger and Interface Technical Requirements and Test Methods" (YD / T1591-2006) is under the guidance of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00H01M10/44
CPCY02E60/10
Inventor 刘坤
Owner ZTE CORP
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