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Charging method and device and charger

A charging method and a technology of a charging device, which are applied to circuit devices, battery circuit devices, secondary battery charging/discharging, etc., and can solve problems such as inability to fully utilize the charging capacity of a charger

Active Publication Date: 2015-03-25
SPREADTRUM COMM (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since the device to be charged is charged with a fixed output voltage regardless of the output voltage of the charger in the above solution, in some cases, the charging capacity of the charger cannot be fully utilized

Method used

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  • Charging method and device and charger
  • Charging method and device and charger
  • Charging method and device and charger

Examples

Experimental program
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Embodiment Construction

[0082] When the USB charger is used to charge the device to be charged, the device to be charged is charged according to a preset fixed output voltage. And when the output voltage of the charger is adjustable, for example, the output voltage range of the charger is 5V ~ 20V, but the charger only outputs a fixed 5V voltage, which cannot make full use of the output capacity of the charger, resulting in low charging efficiency .

[0083] In the embodiment of the present invention, the output voltage of the charger is adjusted by sending a signal indicating the required voltage to the charger through the device to be charged, so that the charger outputs a higher voltage, and the output power of the charger increases, that is, it is input to the The power in the charging device is increased. The charging current of the device to be charged is proportional to the power input to the device to be charged, so the increase of the output power of the charger can increase the charging cu...

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PUM

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Abstract

The invention discloses a charging method and device and a charger. The charging method includes the steps that when a signal, representing a needed voltage value, transmitted by equipment to be charged is received, the current needed voltage value of the equipment to be charged is obtained; according to the needed voltage value of the equipment to be charged, the output voltage of the charger is adjusted; a signal representing a current rated output current value is transmitted to the equipment to be charged so that the equipment to be charged can adjust a preset charging current value of the equipment to be charged according to the current rated output current value, and charging can be performed at an adjusted charging current value. By the adoption of the charging method and device and the charger, the charging capacity of the charger can be sufficiently utilized for achieving rapid charging.

Description

technical field [0001] The invention relates to the charging field, in particular to a charging method, device and charger. Background technique [0002] In the existing national standard chargers, the output voltage of the charger is 5V, and the output current varies according to the nominal value of the charger, generally between 300mA and 1800mA. [0003] Existing USB national standard chargers generally include four ports: a VBUS port, a DP port, a DM port and a GND port, wherein the VBUS port is the output port of the charger, and the DP port and the DM port are two signal ports of the USB interface. When the charger is used to charge the device to be charged, such as a mobile terminal such as a mobile phone, the device to be charged judges whether the current charger is a national standard charger by detecting whether the DM and DP ports of the charger are short-circuited. When it is determined that the current charger is a national standard charger, the device to be ...

Claims

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Application Information

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IPC IPC(8): H02J7/00H02J7/04H01M10/44
CPCY02E60/10
Inventor 陈良金
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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