WO2021042565A1 - Système et procédé de charge rapide pour dispositif portable et dispositif portable - Google Patents

Système et procédé de charge rapide pour dispositif portable et dispositif portable Download PDF

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Publication number
WO2021042565A1
WO2021042565A1 PCT/CN2019/118851 CN2019118851W WO2021042565A1 WO 2021042565 A1 WO2021042565 A1 WO 2021042565A1 CN 2019118851 W CN2019118851 W CN 2019118851W WO 2021042565 A1 WO2021042565 A1 WO 2021042565A1
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WO
WIPO (PCT)
Prior art keywords
charging
battery
module
current
wireless
Prior art date
Application number
PCT/CN2019/118851
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English (en)
Chinese (zh)
Inventor
吴远方
张建志
李肇光
潘维维
黄健萍
曹娟
Original Assignee
深圳传音控股股份有限公司
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Application filed by 深圳传音控股股份有限公司 filed Critical 深圳传音控股股份有限公司
Publication of WO2021042565A1 publication Critical patent/WO2021042565A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M10/4257—Smart batteries, e.g. electronic circuits inside the housing of the cells or batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/44—Methods for charging or discharging
    • H01M10/443—Methods for charging or discharging in response to temperature
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
    • H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B40/00—Technologies aiming at improving the efficiency of home appliances, e.g. induction cooking or efficient technologies for refrigerators, freezers or dish washers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • This application relates to the field of terminal technology, and in particular to a fast charging system and method for handheld devices, and handheld devices.
  • Terminal devices such as mobile phones can only perform wired charging or wireless charging alone, resulting in low charging efficiency.
  • the main purpose of this application is to provide a fast charging system and method for handheld devices, and handheld devices, aiming to improve the charging efficiency of terminal devices.
  • the present application provides a fast charging system for handheld devices, including a charger, a wireless sending device, and a device mainboard end.
  • the charger is connected to a USB interface on the device mainboard end;
  • the device mainboard end includes a first A charging module, a second charging module, a wireless receiving device, a control module, a USB interface, and a battery, the USB interfaces are respectively connected to the first charging module and the control module, the wireless receiving device and the wireless sending device have mutual inductance, so
  • the first charging module and the second charging module are both connected to the regulating module;
  • the battery is respectively connected to the first charging module, the second charging module and the regulating module, wherein the wireless receiving device, the second charging module and the The battery forms a wireless charging circuit, and the USB interface, the first charging module and the battery form a wired charging circuit.
  • the charging system further includes a charging cable
  • the charger includes a microcontroller and a charger interface, and both ends of the charger are plugged into the charger interface and the USB interface, respectively.
  • the device mainboard side further includes a switching module, and the switching module is connected to the USB interface and the control module.
  • the present application also provides a handheld device, the handheld device includes a device mainboard end, the device mainboard end includes a first charging module, a second charging module, a wireless receiving device, a control module, a USB interface, and a battery ,
  • the USB interface is respectively connected to the first charging module and the control module, the wireless receiving device and the external wireless sending device have mutual inductance, the first charging module and the second charging module are both connected to the control module; the battery is respectively connected to The first charging module, the second charging module and the regulating and controlling module are connected.
  • the device mainboard side further includes a switching module, and the switching module is connected to the USB interface and the control module.
  • the switching module is a single-pole double-throw switch or a double-pole double-throw switch.
  • control module is provided with a DP pin, a DM pin, an I2C-CLK pin, and an I2C-SDA pin
  • double-pole double-throw switch connects the charging interface with the DP pin
  • the DM pin is connected, or the double-pole double-throw switch connects the charging interface to the I2C-CLK pin and the I2C-SDA pin.
  • this application also provides a fast charging method, which is applied to a handheld device.
  • the handheld device includes a wireless receiving device, a second charging module, and a battery to form a wireless charging loop.
  • a USB interface, a first charging module, and a battery form Wired charging loop, the fast charging method includes the following steps:
  • the wired charging loop and the wireless charging loop are controlled to conduct, so as to simultaneously perform wired charging and wireless charging on the battery.
  • the obtaining the current charging stage of the battery includes:
  • the current charging stage is the pre-charging stage, acquiring a target charging circuit, where the target charging circuit is the wired charging circuit or the wireless charging circuit;
  • the target charging loop is controlled to be turned on to charge the battery, and after the pre-charging phase ends, the battery is controlled to enter a constant current charging phase.
  • step of obtaining the current charging stage of the battery includes:
  • the current charging phase is a constant voltage charging phase
  • acquiring a target charging circuit where the target charging circuit is the wired charging circuit or the wireless charging circuit
  • the target charging loop is controlled to close.
  • the charging circuit that is turned on first is used as the target charging circuit.
  • the step of controlling the wired charging loop and the wireless charging loop to conduct so as to perform wired charging and wireless charging on the battery at the same time includes:
  • the step of obtaining the current charging stage of the battery includes:
  • the present application also provides a handheld device that includes a memory, a processor, and a charging program stored on the memory and capable of running on the processor, and the charging program is controlled by the When executed by the processor, the steps of the fast charging method as described in any one of the above are implemented.
  • the present application also provides a storage medium having a charging program stored on the computer-readable storage medium, and when the charging program is executed by a processor, the fast charging method as described in any one of the above is implemented. step.
  • the technical solution of the present application obtains the current charging stage of the battery.
  • the current charging stage is the constant current charging stage
  • the wired charging loop and the wireless charging loop are controlled to be turned on, so as to perform wired and wireless charging on the battery at the same time.
  • the charging current of the battery is large, and the charging efficiency of the battery is improved.
  • FIG. 1 is a schematic diagram of the device structure of the hardware operating environment involved in the solution of the method embodiment of the present application;
  • FIG. 2 is a schematic diagram of the circuit framework of the fast charging system of this application.
  • FIG. 3 is a schematic flowchart of a first embodiment of a fast charging method for handheld devices according to this application;
  • FIG. 4 is a schematic flowchart of a second embodiment of a fast charging method for handheld devices according to this application.
  • FIG. 5 is a schematic flowchart of a third embodiment of a fast charging method for handheld devices according to this application.
  • FIG. 6 is a detailed flowchart of an embodiment of step S20 of the fast charging method for handheld devices according to the present application.
  • the wired charging loop and the wireless charging loop are controlled to be turned on, so as to simultaneously perform wired charging and wireless charging on the battery.
  • the technical solution of the present application obtains the current charging stage of the battery.
  • the current charging stage is the constant current charging stage
  • the wired charging loop and the wireless charging loop are controlled to be turned on, so as to perform wired and wireless charging on the battery at the same time.
  • the charging current of the battery is large, and the charging efficiency of the battery is improved.
  • FIG. 1 is a schematic diagram of a hardware operating environment of a terminal involved in a solution of an embodiment of the present application.
  • the terminal in the embodiment of the present application may be a mobile terminal, such as a mobile phone, a tablet computer, a portable notebook computer, and the like.
  • the terminal may include: a processor 1001, such as a CPU, a network interface 1004, a user interface 1003, a memory 1005, and a communication bus 1002.
  • the communication bus 1002 is configured to realize the connection and communication between these components.
  • the user interface 1003 may include a display screen (Display), an input unit such as a keyboard (Keyboard), and a remote control.
  • the optional user interface 1003 may also include a standard wired interface and a wireless interface.
  • the network interface 1004 may include a standard wired interface and a wireless interface (such as a non-volatile memory (non-volatile memory), such as a magnetic disk storage).
  • the memory 1005 may also be a storage device independent of the aforementioned processor 1001.
  • FIG. 1 does not constitute a limitation on the terminal, and may include more or fewer components than shown in the figure, or combine some components, or arrange different components.
  • the memory 1005 as a computer storage medium may include an operating system, a network communication module, a user interface module, and a charging program.
  • the network interface 1004 is mainly set to connect to the back-end server and communicate with the back-end server;
  • the user interface 1003 is mainly set to connect to the client (user side) to communicate with the client;
  • the processor 1001 can be set to call the charging program stored in the memory 1005 and perform the following operations:
  • the wired charging loop and the wireless charging loop are controlled to be turned on, so as to simultaneously perform wired charging and wireless charging on the battery.
  • the processor 1001 may call a charging program stored in the memory 1005, and also perform the following operations:
  • the current charging stage is the pre-charging stage, acquiring a target charging circuit, where the target charging circuit is a wired charging circuit or a wireless charging circuit;
  • the target charging loop is controlled to be turned on to charge the battery, and after the pre-charging phase ends, the battery is controlled to enter a constant current charging phase.
  • the processor 1001 may call a charging program stored in the memory 1005, and also perform the following operations:
  • the current charging stage is a constant voltage charging stage, acquiring a target charging circuit, where the target charging circuit is a wired charging circuit or a wireless charging circuit;
  • the target charging loop is controlled to close.
  • the processor 1001 may call a charging program stored in the memory 1005, and also perform the following operations:
  • the charging circuit that is turned on first is used as the target charging circuit.
  • the processor 1001 may call a charging program stored in the memory 1005, and also perform the following operations:
  • the processor 1001 may call a charging program stored in the memory 1005, and also perform the following operations:
  • the present application provides a handheld device 100 and a fast charging system 100 for the handheld device 100.
  • the fast charging system 100 includes a charger 20, a wireless transmitting device 30, and a device main board.
  • the device 20 is connected to the USB interface 11 on the main board of the device; the main board of the device includes a first charging module 12, a second charging module 13, a wireless receiving device 14, a control module 15, a USB interface 11, and a battery 16.
  • the USB interface 11 Are respectively connected to the first charging module 12 and the control module 15, the wireless receiving device 14 and the wireless sending device 30 have mutual inductance, and the first charging module 12 and the second charging module 13 are both connected to the control module 15;
  • the battery 16 is respectively connected to the first charging module 12, the second charging module 13, and the control module 15, wherein the wireless receiving device 14, the second charging module, and the battery 16 form a wireless charging loop, and the USB interface 11,
  • the first charging module and the battery 16 form a wired charging circuit.
  • the handheld device 100 may be a portable device such as a mobile phone, a tablet computer, etc., and a USB interface 11 is provided on the device motherboard end of the handheld device 100, and the USB interface 11 may specifically be a Micro B interface or Type C interface, etc.; the USB interface 11 is connected to the control module 15 for the control module 15 to control the first charging module 12 to control the battery 16 after receiving the signal transmitted by the USB interface 11 Charging; the charger 20 is set to connect the handheld device 100 to the mains to charge the handheld device 100, the charger 20 is a fast charger that can support QC, PE and other fast charging protocols, In order to quickly charge the handheld device 100.
  • a wireless receiving device 14 is provided in the handheld device 100.
  • the wireless receiving device 14 and the wireless sending device 30 interact with each other to receive the electric energy transmitted by the wireless sending device 30.
  • the wireless receiving device 14 also It is connected to the second charging module 13 so that the second charging module 13 charges the battery 16 under the control of the regulating module 15.
  • the handheld device 100 of this embodiment can realize dual wireless simultaneous charging.
  • the first charging module 12 and the second charging module 13 may both be wireless charging chips, or wired and wireless dual charging modes may be realized.
  • Simultaneous charging for example, the first charging module 12 is a wired charging chip, and the second charging module 13 is a wireless charging chip.
  • the battery 16 in the present application includes a battery cell and a battery protection board.
  • the battery 16 is connected to the control module 15.
  • the control module 15 in this embodiment is a SYS module. Specifically, the battery 16 passes through the SYS module.
  • the Bat-temp pin (namely Battery and Temperature abbreviation) of the module is connected to realize real-time monitoring of the temperature of the battery 16.
  • the fast charging system 100 further includes a charging cable 40.
  • the charger 20 includes a microcontroller 21 and a charger interface 22. Both ends of the charging cable 40 are plugged into the charger interface 22 and the charger interface 22, respectively.
  • USB interface 11 The charging cable 40 may be USB
  • the A-Micro B charging cable 40 may also be a Type C charging cable 40, or other charging cables 40, and only need to be adapted to the USB interface 11.
  • the main board side of the device further includes a switching module 50, and the switching module 50 is connected to the USB interface 11 and the control module 15.
  • the switching module 50 is an electronic switch, and specifically the switching module 50 is a single-pole double-throw switch or a double-pole double-throw switch.
  • the control module 15 is provided with a DP pin, a DM pin, an I2C-CLK pin, and an I2C-SDA pin.
  • the double-pole double-throw switch connects the charging interface with the DP pin and the DM pin. Connect, or, the double-pole double-throw switch connects the charging interface with the I2C-CLK pin and the I2C-SDA pin.
  • the DP pin, the DM pin, the I2C-CLK pin, and the I2C-SDA pin are set for signal transmission, and the DP pin and the DM pin are connected through the switching module 50
  • the control module 15 works in DP/ In the DM working mode, when the I2C-CLK pin and the I2C-SDA pin are connected to the USB interface 11 through the switching module 50, the control module 15 works in the I2C communication mode.
  • the handheld The device is the master, and the charger is the slave.
  • the first embodiment of the fast charging method for the handheld device of the present application is proposed, which is applied to the handheld device, and the handheld device includes The wireless receiving device, the second charging module, and the battery form a wireless charging circuit, and the USB interface, the first charging module, and the battery form a wired charging circuit.
  • the fast charging method includes the following steps:
  • Step S10 Obtain the current charging stage of the battery.
  • the battery is a lithium battery as an example for description. It can be understood that the battery may also be other types of batteries.
  • the entire charging phase of the battery is divided into a pre-charging phase, a constant current charging phase, and a constant voltage charging phase.
  • the pre-charging stage since the terminal voltage of the battery is low, only a low current charge is required.
  • the constant current charging stage the battery can be charged with a high current to improve the battery.
  • the battery will be fully charged. Therefore, the battery can be charged with a small current with a charging voltage equal to the terminal voltage of the battery, which can prevent the battery Damage due to overpressure.
  • the charging phase can be divided according to the terminal voltage of the battery.
  • Step S20 when the current charging stage is a constant current charging stage, control the wired charging loop and the wireless charging loop to conduct, so as to perform wired charging and wireless charging on the battery at the same time.
  • the battery when the current charging stage is the constant current charging stage, the battery can be charged with a high current. Therefore, the wired charging circuit and the wireless charging circuit are controlled to be turned on together to increase the resistance to the battery. The charging current of the battery improves the charging efficiency of the battery.
  • the technical solution of the present application obtains the current charging stage of the battery.
  • the current charging stage is the constant current charging stage
  • the wired charging circuit and the wireless charging circuit are controlled to be turned on, so that the battery can be charged and charged simultaneously.
  • the wireless charging jointly increases the charging current to the battery and improves the charging efficiency of the battery.
  • the method includes:
  • Step S30 when the current charging stage is the pre-charging stage, obtain a target charging circuit, where the target charging circuit is the wired charging circuit or the wireless charging circuit;
  • Step S40 controlling the target charging loop to be turned on to charge the battery, and controlling the battery to enter a constant current charging stage after the pre-charging stage ends.
  • the current charging stage of the battery is the pre-charging stage.
  • the battery only needs to be charged with a small current and the terminal voltage of the battery is slowly increased. Therefore, by controlling all The target charging circuit is turned on to charge the battery, and the target charging circuit is a wired charging circuit or a wireless charging circuit, that is, the battery is charged through one of the wired charging circuit or the wireless charging circuit. Low-current charging is performed, thereby avoiding the simultaneous conduction of the wired charging loop and the wireless charging loop, resulting in waste of resources.
  • the battery is controlled to enter a constant current charging phase, and the charging loop and the wireless charging loop are controlled to be turned on at the same time to quickly charge the battery.
  • the method includes:
  • Step S50 when the current charging stage is a constant voltage charging stage, obtain a target charging circuit, where the target charging circuit is the wired charging circuit or the wireless charging circuit;
  • Step S60 controlling the target charging loop to be turned on to charge the battery, wherein after the constant current charging phase ends, the battery is controlled to enter the constant voltage charging phase;
  • step S70 after the constant voltage charging phase ends, the target charging loop is controlled to close.
  • the current charging stage of the battery is the constant voltage charging stage.
  • the battery will be fully charged. Therefore, the battery can be charged with a charging voltage equal to the terminal voltage of the battery and a small current It is sufficient to charge the battery. Therefore, the battery is charged by controlling the target charging circuit to be turned on, and the target charging circuit is a wired charging circuit or a wireless charging circuit, that is, through the wired charging One of the loops or the wireless charging loop charges the battery with a small current, thereby avoiding the simultaneous conduction of the wired charging loop and the wireless charging loop, resulting in waste of resources.
  • the target charging loop is controlled to close, and the entire charging process is completed.
  • a fourth embodiment of the fast charging method of the present application is proposed, and the charging circuit that is turned on first among the wired charging circuit and the wireless charging circuit is used as the target charging circuit .
  • the charging circuit that is turned on first is used as the target charging circuit.
  • the lead-connected wired charging circuit is used as the target charging circuit.
  • the charging circuit or the wireless charging circuit charges the battery, thereby preventing the charging circuit that is turned on first from being disconnected and switching to another charging circuit, and reducing the complexity of terminal control.
  • step S20 includes:
  • Step S11 acquiring the charging temperature of the battery
  • Step S12 when the charging temperature is greater than a preset temperature, reduce the charging current of the wireless charging circuit or control the wireless charging circuit to close.
  • the temperature of the battery is acquired in real time or regularly, and when the charging temperature is greater than a preset temperature, the charging current of the wireless charging circuit is reduced or the wireless charging is controlled
  • the preset temperature may be determined according to factors such as battery capacity or type, the preset temperature may be multiple, for example, the preset temperature may include a first preset temperature and a second preset temperature, The first preset temperature is less than the second preset temperature, and when the charging temperature is greater than the first preset temperature and less than the second preset temperature, the charging current of the wireless charging circuit is reduced, and the charging temperature is When the temperature is greater than the second preset temperature, the wireless charging circuit is directly controlled to close, thereby effectively avoiding the excessively high charging temperature during the battery charging process and reducing the risk of high-current charging.
  • step S10 includes:
  • the current voltage of the battery is detected to determine which charging stage the battery is in.
  • the current voltage is less than a preset voltage, it is determined that the battery is in a pre-charged state, for example,
  • the preset voltage may be 3.5V; when the current voltage is greater than the preset voltage and less than the preset target voltage, it is determined that the battery is in a constant current charging state, and the preset target voltage may be equal to or slightly less than the full battery.
  • the terminal voltage after charging when the current voltage is greater than the preset target voltage and the charging current of the battery is less than the preset current, it is determined that the battery is in a constant voltage charging state; when the current charging stage of the battery is obtained Then, the corresponding charging loop is controlled to be turned on, thereby effectively improving the charging efficiency of the battery.
  • the present application also provides a handheld device that includes a memory, a processor, and a charging program stored on the memory and capable of running on the processor, and the charging program is controlled by the When the processor is executed, the steps of the fast charging method as described above are realized.
  • the present application also provides a storage medium with a charging program stored on the computer-readable storage medium, and when the charging program is executed by a processor, the steps of the fast charging method as described above are realized.
  • the technical solution of this application essentially or the part that contributes to the prior art can be embodied in the form of a software product, and the computer software product is stored in a storage medium as described above (such as ROM/ RAM, magnetic disks, optical disks) include several instructions to make a terminal device (which can be a TV, mobile phone, computer, server, terminal, or network device, etc.) execute the methods described in the various embodiments of the present application.
  • a terminal device which can be a TV, mobile phone, computer, server, terminal, or network device, etc.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Charge And Discharge Circuits For Batteries Or The Like (AREA)

Abstract

L'invention concerne un système (100) et un procédé de charge rapide pour un dispositif portable et le dispositif portable. Le procédé de charge rapide est appliqué au dispositif portable. Le dispositif portable comprend un dispositif de réception sans fil (14), un second module de charge (13) et une batterie (16) qui forment un circuit de charge sans fil et une interface USB (11), un premier module de charge (12) et une batterie (16) qui forment un circuit de charge filaire. Le procédé de charge rapide comprend spécifiquement les étapes consistant à : obtenir une étape de charge actuelle de la batterie (16) (S10) ; et commander la boucle de charge filaire et la boucle de charge sans fil à s'activer pour effectuer simultanément une charge filaire et une charge sans fil sur la batterie (16) lorsque l'étape de charge de courant est une étape de charge de courant - constante (S20).
PCT/CN2019/118851 2019-09-05 2019-11-15 Système et procédé de charge rapide pour dispositif portable et dispositif portable WO2021042565A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201910839688.5A CN110518668A (zh) 2019-09-05 2019-09-05 用于手持设备的快速充电系统及方法、手持设备
CN201910839688.5 2019-09-05

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Publication Number Publication Date
WO2021042565A1 true WO2021042565A1 (fr) 2021-03-11

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CN113036828A (zh) * 2019-12-24 2021-06-25 Oppo广东移动通信有限公司 电子设备
CN113036827A (zh) 2019-12-24 2021-06-25 Oppo广东移动通信有限公司 电子设备
CN114683874A (zh) * 2020-12-25 2022-07-01 苏州宝时得电动工具有限公司 自动工作系统、充电站及充电控制方法
CN114765376A (zh) * 2021-01-15 2022-07-19 深圳市华思旭科技有限公司 充电系统及电子设备

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