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Charging method and device, charger, electronic device and electronic equipment

A charging method and a technology of a charging device, which are applied in the fields of electronic devices and equipment, charging methods, chargers, and devices, can solve the problem of high power loss in charging circuits, and achieve the effects of reducing the difference and reducing losses

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, when the above method is used to charge the device to be charged, the charger charges the device to be charged with a fixed output voltage, and there is a problem of high power loss of the charging circuit.

Method used

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  • Charging method and device, charger, electronic device and electronic equipment
  • Charging method and device, charger, electronic device and electronic equipment
  • Charging method and device, charger, electronic device and electronic equipment

Examples

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Embodiment Construction

[0067] When using a USB charger to charge a 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 charger charges the device to be charged with a fixed output voltage. However, when the above method is used to charge the device to be charged, the charger charges the device to be charged with a fixed output voltage, which has the problem of high power loss of the charging circuit.

[0068] In the embodiment of the present invention, the charger obtains the current voltage value of the battery by receiving the signal indicating the current voltage value of the battery sent by the device to be charged, and adjusts the output voltage according to the current voltage value of the battery instead of outputting with a fi...

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PUM

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Abstract

The invention discloses a charging method and device, a charger, an electronic device and electronic equipment. The charging method includes the steps that when a signal, transmitted by equipment to be charged, representing the current voltage value of a battery is received, the current voltage value of the battery is obtained; according to the current voltage value of the battery, the output voltage of the charger is adjusted. By the adoption of the charging method and device, the charger, the electronic device and the electronic equipment, the power loss of a charging circuit in the charging process can be reduced.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a charging method, device, charger, electronic device and equipment. 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...

Claims

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Application Information

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IPC IPC(8): H02J7/00H02J7/04H01M10/44
CPCH01M10/44H02J7/007H02J7/042Y02E60/10
Inventor 陈良金
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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