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Charging control method and charging system

A charging control method and technology of charging control chips, which are applied in charging/discharging current/voltage regulation, battery circuit devices, current collectors, etc.

Active Publication Date: 2017-08-04
SMART IP INFORMATION SERVICE SHENZHEN LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a charging control method and a charging system, which can solve the technical problem that the fast charging control method in the prior art can only transmit the handshake signal through the data pin of the USB interface and can only realize fast charging through USB data

Method used

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  • Charging control method and charging system
  • Charging control method and charging system

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Embodiment Construction

[0023] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0024] Please check figure 1 , figure 1 It is a block diagram of the charging system of the present invention. In this embodiment, the charging system includes a charger 20 and a device to be charged 21 .

[0025] The charger 20 includes a charging control chip 201 , and the device to be charged 21 includes a power management unit 211 .

[0026] When the charger 20 is connected to the device to be charged 21, a square-wave charging voltage signal Vchgt is generated at the output of the charger 20, and the charging control chip 201 detects the monitoring sampling voltage Vsense that is linearly related to the charging voltage signal Vchgt and then according to the monitoring sampling voltage Vsense The voltage Vsense acquires the waveform of the charging voltage signal Vchgt and adjusts the charging voltage and charging current output by the charger...

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Abstract

The invention discloses a charging control method. The charging control method comprises the steps that a charger is connected with a device to be charged; a charging voltage signal of square waves is generated at the output end of the charger; a charging control chip of the charger detects a monitoring sampling voltage in linear relation with the charging voltage signal; the charging control chip acquires the waveform of the charging voltage signal according to the monitoring sampling voltage and regulates a charging voltage and a charging current which are output by the charger according to the waveform. The invention further discloses a charging system. In this way, a handshake protocol between the charger and the device to be charged can be completed not through data pins of a USB interface, so that the purpose of quick charging is achieved; moreover, the charging control method and system are applicable to various charging wires and are not limited to USB charging.

Description

technical field [0001] The invention relates to the technical field of charging, in particular to a charging control method and a charging system. Background technique [0002] At present, with the rapid development of electronic information technology, various electronic devices are widely used by people, and the charging problem of these electronic devices has increasingly become the focus of people's attention. For example, at present, due to the serious power consumption of the large screen, the battery life of the mobile phone is insufficient, the power consumption is fast, and it needs to be charged irregularly. Therefore, the charging efficiency has become another means for people to solve the battery life problem. [0003] The existing charger realizes the handshake protocol between the charger and the device to be charged through the data pins (D+, D-) of the USB interface, so as to achieve the purpose of fast charging. For example, a typical Qualcomm solution is t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J7/00
CPCH02J7/00H02J7/00041H02J7/00045H02J7/0021H02J7/0044H02J7/007H02J2207/10
Inventor 李城铭倪漫利
Owner SMART IP INFORMATION SERVICE SHENZHEN LTD
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