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Charging circuit, system, method and electronic device

A charging circuit and capacitor technology, applied in the fields of charging circuits and electronic devices, can solve the problems of serious heat generation and low step-down conversion efficiency, and achieve the effects of reducing charging time, improving charging efficiency, and avoiding low step-down conversion efficiency.

Active Publication Date: 2016-12-14
MEIZU TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Embodiments of the present invention provide a charging circuit, system, method and electronic device to solve the problems of low step-down conversion efficiency and serious heat generation in existing charging circuits

Method used

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  • Charging circuit, system, method and electronic device
  • Charging circuit, system, method and electronic device
  • Charging circuit, system, method and electronic device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] In order to solve the problems of low step-down conversion efficiency, small charging current and serious heat generation existing in the existing charging circuit, Embodiment 1 of the present invention provides a charging circuit, such as figure 1 As shown, it is a schematic structural diagram of the charging circuit described in Embodiment 1 of the present invention. It should be noted that the charging circuit can be applied to a charging scenario of a terminal device. Specifically, by figure 1 It can be known that the charging circuit may include an adaptation module 11, a control module 12, and a battery module 13, and the charging circuit may also include a A charge pump conversion module 14, wherein the charge pump conversion module 14 includes one or more parallel charge pump conversion submodules ( figure 1 Take N charge pump conversion sub-modules as an example, N is a positive integer);

[0027] For any charge pump conversion sub-module in the charge pump ...

Embodiment 2

[0078] Embodiment 2 of the present invention provides a charging method, such as Figure 5 As shown, it is a schematic flow chart of the charging method described in Embodiment 2 of the present invention, and the charging circuit used in the embodiment of the present invention can be the same as the charging circuit described in Embodiment 1 of the present invention, and the similarities will not be repeated. . Specifically, by Figure 5 It can be seen that the charging method may include the following steps:

[0079] Step 501: receiving a control signal sent by the controller;

[0080] Step 502: If it is determined that the control signal is the first control signal, turn on the first group of switches, turn off the second group of switches, and charge the first capacitor, the second capacitor and the battery through the power adapter; if it is determined that the control signal is the second control signal, turn on the second group of switches, turn off the first group of...

Embodiment 3

[0092] Based on the same inventive concept as that of Embodiment 2 of the present invention, Embodiment 3 of the present invention provides an electronic device, such as Figure 6 As shown in , it is a schematic structural diagram of the electronic device described in Embodiment 3 of the present invention. Specifically, by Figure 6 It can be seen that the electronic device may include:

[0093] The receiving unit 61 can be used to receive the control signal issued by the controller;

[0094] The charging unit 62 can be used to turn on the first set of switches if it is determined that the control signal is the first control signal, turn off the second set of switches, and charge the first capacitor, the second capacitor and the battery through the power adapter; otherwise, turn on The second group of switches closes the first group of switches, and charges the battery through the first capacitor and the second capacitor.

[0095] Further, the device may also include:

[0...

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Abstract

The invention discloses a charging circuit, a system, a method and an electronic device. The charging circuit comprises a charge pump conversion module including one or more charge pump conversion sub-modules which are connected in parallel, and each charge pump conversion sub-module can be used for starting a first switch group and closinga second switch group when receiving a first control signal issued by a control module, so that an adaptive module can be used for charging the capacitor in each charge pump conversion sub-module and a battery module which is connected with each charge pump conversion sub-module; and each charge pump conversion sub-module can be used for starting the second switch group and closing the first switch group when receiving a second control signal issued by the control module, so that the capacitor in each charge pump conversion sub-module can be used for charging the battery module. Compared with the prior art, the charging circuit in the embodiment of the invention has the advantages that a charging / discharging element is a capacitor but not an inductor, so that the problems of low step-down conversion efficiency, small charging current and serious heating of a charging circuit caused by an inductor can be avoided.

Description

technical field [0001] The invention relates to the technical field of charging, in particular to a charging circuit, system, method and electronic device. Background technique [0002] With the continuous improvement of terminal equipment configuration, the demand for power and consumption of terminal equipment become larger and larger, which leads to higher and higher charging frequency of terminal equipment, which seriously affects the charging efficiency of terminal equipment. Reduced user experience. At present, charging circuits based on Buck circuits are often used in the industry to charge terminal devices with high current. [0003] However, since the Buck circuit includes an output inductance L1 with coil loss and magnetic core loss, the buck conversion efficiency of the entire charging circuit may be low (generally speaking, below 91%), so that the charging circuit cannot Realize real high-current charging (that is, the charging current is still small), which in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02J7/02H01M10/44
CPCH01M10/44H02J7/00H02J7/02H02J7/345H02M3/073H02M3/077H02M3/07H02J2207/20H02J7/00036H02J7/00047Y02E60/10H02M3/072H02J7/00712
Inventor 黄昌松陈林锋刘小勇
Owner MEIZU TECH CO LTD