Charging method, device, charger, terminal and system

A charging method and charger technology, applied in circuit devices, battery circuit devices, charging/discharging current/voltage regulation, etc., can solve problems such as affecting charger identification and affecting signal quality.
CN107124012AActive Publication Date: 2017-09-01BEIJING XIAOMI MOBILE SOFTWARE CO LTD
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
BEIJING XIAOMI MOBILE SOFTWARE CO LTD
Publication Date
2017-09-01

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Abstract

The invention relates to a charging method, a device, a charger, a terminal and a system, belonging to the technical field of power supply. The method comprises the following steps: a charger sends the configuration information thereof to a terminal through a VBUS pin; the charger receives output indication information from the terminal through the VBUS pin, wherein the output indication information is determined by the terminal according to the configuration information and the current state parameters of the battery of the terminal; and a voltage supply circuit and the VBUS pin are connected, and the voltage supply circuit outputs electric energy for charging the battery of the terminal to the terminal under control according to the output indication information. A charger is identified through the VBUS pin, and data is transmitted through a DP pin and a DM pin. Bifurcation of the transmission path of a data line connected with the DP pin and the DM pin is avoided fundamentally. The success rate of charger identification is improved. The quality of signals in data transmission between USB master and slave equipment is ensured.
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Description

technical field

[0001] The present disclosure relates to the technical field of power supply, and in particular to a charging method, device, charger, terminal and system. Background technique

[0002] Currently, terminals such as mobile phones and tablet computers usually use USB (Universal Serial Bus, Universal Serial Bus) interfaces for charging and data transmission.

[0003] The USB interface includes VBUS (voltage bus) pins, DP (Digital Positive, data positive) pins (also called D+ pins), DM (Digital Minus, data negative) pins (also called D- pins) and GND (Ground, ground) pin. In related technologies, the DP pin and the DM pin are respectively electrically connected to the charging IC (Integrated Circuit, integrated circuit) built in the terminal. When the terminal is connected to the charger through the USB interface, the charging IC is The DM pin communicates with the charger to realize the identification of the charger. In addition, the DP pin and the DM pin are...

Claims

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