Charging control method and device

A charging control method and a technology to be charged, which are applied to circuit devices, battery circuit devices, secondary battery charging/discharging, etc., and can solve problems such as slow charging speed, low step-down conversion efficiency, and serious heat generation

Active Publication Date: 2017-03-22
MEIZU TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The embodiment of the present invention provides a charging control method and device, which are used to solve the problem

Method used

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  • Charging control method and device
  • Charging control method and device

Examples

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Embodiment 1

[0026] In order to solve the problems of low step-down conversion efficiency, slow charging speed and serious heat generation in the existing charging control method, Embodiment 1 of the present invention provides a charging control method, such as figure 2 , which is a schematic flow chart of the steps of the charging control method described in Embodiment 1 of the present invention. Specifically, by figure 2 It can be seen that the charging control method may include the following steps:

[0027] Step 201: collecting the initial charging voltage and initial charging current of the battery to be charged;

[0028] Step 202: Judging that the initial charging voltage is greater than a set voltage threshold and the initial charging current is greater than a set current threshold;

[0029] Step 203: If yes, control the power-on of the charge pump conversion circuit and the power-off of the step-down conversion circuit, and control the adapter to output dynamic voltage and dyna...

Embodiment 2

[0118] Based on the same inventive concept as the embodiment of the present invention, Embodiment 2 of the present invention provides a charging control device, such as Figure 8 As shown in , it is a schematic structural diagram of the charging control device described in Embodiment 2 of the present invention. Specifically, by Figure 8 It can be seen that the charging control device may include:

[0119] The collection module 81 can be used to collect the initial charging voltage and initial charging current of the battery to be charged;

[0120] The control module 82 can be used to judge that the initial charging voltage is greater than the set voltage threshold, and the initial charging current is greater than the set current threshold, and if so, control the power-on of the charge pump conversion circuit and the power-off of the step-down conversion circuit , and control the adapter to output a dynamic voltage and a dynamic current to the charge pump conversion circuit,...

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Abstract

The invention discloses a charging control method and device. Then method includes the following steps: acquiring initial charging voltage and initial charging current of a battery to be charged; and if the fact that the initial charging voltage is larger than a set voltage threshold and the initial charging current is larger than a set current threshold is determined, controlling a charge pump conversion circuit to be powered up and a step-down conversion circuit to be powered down, controlling an adapter to output dynamic voltage and dynamic current to the charge pump conversion circuit, and charging the battery to be charged through the charge pump conversion circuit. Compared with the prior art, since the efficiency charge pump conversion circuit is adopted during large-current charging, step-down conversion efficiency is effectively improved, charging speed is increased and charging time is shortened; and in addition, since the charge pump conversion circuit does not contain an inductance device which is easy to generate thermal energy, the problem of heat emission of a circuit during charging can be further solved.

Description

technical field [0001] The present invention relates to the technical field of charging, in particular to a charging control method and device. Background technique [0002] At present, when people charge terminal devices (such as mobile phones, tablet computers, etc.), they usually use a charging system including an adapter and a Buck Switch Charger (Buck) circuit (such as figure 1 As shown, which is a structural schematic diagram of the charging system described in the prior art) to complete the entire charging stage. Specifically, by figure 1 It can be known that the charging system described in the prior art may include an adapter 11 , a step-down conversion circuit 12 and a battery 13 to be charged. Wherein, the charging phase may include a trickle phase, a pre-charging phase, a CC (Constant Current, constant current) phase, and a CV (Constant Voltage, constant voltage) phase. [0003] Specifically, in the prior art, the adapter can only output a fixed voltage (such ...

Claims

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Application Information

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IPC IPC(8): H02J7/00H01M10/44
CPCH01M10/44H02J7/02H02J7/00714H02J7/007182H02J2207/20Y02E60/10Y02B40/00
Inventor 陈林锋黄昌松
Owner MEIZU TECH CO LTD
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