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Charging circuit and mobile terminal

A charging circuit, charging voltage technology, applied in the field of communication, can solve the problem of slow charging speed and so on

Active Publication Date: 2017-08-18
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Embodiments of the present invention provide a charging circuit and a mobile terminal to solve the problem of slow charging speed in existing low-voltage direct charging methods

Method used

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  • Charging circuit and mobile terminal

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Embodiment Construction

[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0019] see figure 1 , figure 1 is a structural diagram of a charging current provided by an embodiment of the present invention, such as figure 1 As shown, the charging circuit 100 includes:

[0020] A series battery pack 101, the series series battery pack 101 includes at least two batteries, the cathode of the series series battery pack 101 is grounded, and the anode of the series series battery pack 101 is connected to the output terminal of the charge...

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Abstract

The invention provides a charging circuit and a mobile terminal. The charging circuit comprises a series-wound battery pack and a control unit, wherein the series-wound battery pack comprises at least two batteries; the negative electrode of the series-wound battery pack is grounded while the positive electrode of the series-wound battery pack is connected with the output end of a charger; the first sampling end of the control unit is connected with the second end of the series-wound battery pack; the first control end of the control unit is connected with the control end of the charger; the control unit is used for collecting the charging voltage of the series-wound battery pack through the first sampling end, generating a first voltage control signal according to the charging voltage, and transmitting the first voltage control signal to the charger through the first control end; and the first voltage control signal is used for controlling the output voltage of the charger. Therefore, according to the embodiments, the batteries are connected in series to obtain the series-wound battery pack; and then the series-wound battery pack is subjected to high-voltage charging, so that the charging speed is improved.

Description

technical field [0001] The invention relates to the communication field, in particular to a charging circuit and a mobile terminal. Background technique [0002] At present, the low-voltage direct charging method is widely used in mobile terminals for charging. The existing low-voltage direct charging method has very high requirements on the channel impedance. According to the power loss P=I*I*R, assuming that the current doubles, if you want to ensure the power If the loss remains unchanged, the channel impedance needs to be reduced to a quarter of the original. The existing technology cannot greatly reduce the channel impedance, and the charging speed cannot be increased by increasing the charging current, resulting in the slow charging speed of the existing low-voltage charging method. It can be seen that the existing low-voltage direct charging method has the problem of slow charging speed. Contents of the invention [0003] Embodiments of the present invention provid...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/0013H02J7/0077
Inventor 丁志涛
Owner VIVO MOBILE COMM CO LTD