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Charging method and device, charger, to-be-charged equipment and charging system

A technology of chargers and voltage converters, which is applied in the directions of charging/maintenance charging/discharging, charging/discharging current/voltage regulation, circuit devices, etc.

Active Publication Date: 2017-06-16
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, charger, to-be-charged equipment and charging system
  • Charging method and device, charger, to-be-charged equipment and charging system
  • Charging method and device, charger, to-be-charged equipment and charging system

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Embodiment Construction

[0083] Existing USB national standard charger generally includes four pins: VBUS pin, DP pin, DM pin and GND pin, wherein, VBUS pin is the output pin of charger, DP pin and DM pin These are the two signal pins 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 charged is charged according to a preset fixed output voltage. However, since in the above solution, the device to be charged is charged with a fixed output voltage regardless of the output voltage of the charger, in some cases, the charging capability of the charger cannot be fully utilized.

[0084] In the embodiment of the present invention, the device to be charged sends a con...

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Abstract

The invention relates to a charging method, a charging device, a charger, to-be-charged equipment and a charging system. The charging method comprises the following steps: acquiring a control current wave from the to-be-charged equipment, wherein the control current wave comprises a positive current pulse, a negative current pulse and a current with a current value equal to a reference current value; when the control current wave is the positive current pulse, adjusting the output voltage value of the charger into the voltage value more than the current output voltage value of the charger; when the control current wave is negative current pulse, adjusting the output voltage value of the charger into the voltage value less than the current output voltage value of the charger; and when the control current wave is the current with the current value equal to the reference current value, maintaining the output voltage value of the charger to be unchanged. By adoption of the method, the device, the charger, the to-be-charged equipment and the charging system, rapid charging can be realized by completely utilizing the output capacity of the charger.

Description

technical field [0001] The invention relates to the field of charging, in particular to a charging method, device, charger, equipment to be charged and a charging system. 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 charger generally includes four pins: VBUS pin, DP pin, DM pin and GND pin, wherein, VBUS pin is the output pin of charger, DP pin and DM pin These are the two signal pins 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 charg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00
CPCH02J7/007H01M10/44H02J7/0071H02J7/00711H02J7/00H02J7/0069H02J2207/20H02J7/00718Y02E60/10
Inventor 陈良金
Owner SPREADTRUM COMM (SHANGHAI) CO LTD
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