WO2021129574A1 - 电子设备 - Google Patents

电子设备 Download PDF

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Publication number
WO2021129574A1
WO2021129574A1 PCT/CN2020/138040 CN2020138040W WO2021129574A1 WO 2021129574 A1 WO2021129574 A1 WO 2021129574A1 CN 2020138040 W CN2020138040 W CN 2020138040W WO 2021129574 A1 WO2021129574 A1 WO 2021129574A1
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WO
WIPO (PCT)
Prior art keywords
voltage
circuit
charging
electronic device
voltage conversion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2020/138040
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English (en)
French (fr)
Inventor
曲春营
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Oppo Mobile Telecommunications Corp Ltd
Original Assignee
Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Oppo Mobile Telecommunications Corp Ltd filed Critical Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority to EP20905679.5A priority Critical patent/EP4080712A4/en
Publication of WO2021129574A1 publication Critical patent/WO2021129574A1/zh
Priority to US17/846,358 priority patent/US20220329111A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; 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
    • H02J50/40—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices
    • H02J50/402—Circuit arrangements or systems for wireless supply or distribution of electric power using two or more transmitting or receiving devices the two or more transmitting or the two or more receiving devices being integrated in the same unit, e.g. power mats with several coils or antennas with several sub-antennas
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; 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
    • H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; 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
    • H02J50/20—Circuit arrangements or systems for wireless supply or distribution of electric power using microwaves or radio frequency waves
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/02—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries for charging batteries from AC mains by converters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/60—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements
    • H02J7/64—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries including safety or protection arrangements against overvoltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/855—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or discharging batteries or for supplying loads from batteries
    • H02J7/90—Regulation of charging or discharging current or voltage
    • H02J7/933—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—ELECTRIC POWER NETWORKS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J2207/00—Details of circuit arrangements for charging or discharging batteries or supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter

Definitions

  • This application relates to the field of charging, and more specifically, to an electronic device.
  • more and more electronic devices can support wired charging and wireless charging at the same time.
  • the present application provides an electronic device that can provide faster wired charging speed and wireless charging speed for the electronic device.
  • an electronic device including: a battery; a plurality of wireless charging modules for charging the battery, wherein the plurality of wireless charging modules each include a wireless receiving circuit; a plurality of wired charging modules, For charging the battery according to the output voltage and output current of the power supply device; a control module for controlling at least one of the plurality of wireless charging modules and/or at least one of the plurality of wired charging modules Charge the battery.
  • the electronic device may include multiple wireless charging modules and multiple wired charging modules. Compared with one wireless charging module and one wired charging module, the charging power received by the battery can be increased, thereby increasing the charging speed.
  • Fig. 1 is a schematic diagram of a wireless charging system provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of an electronic device supporting wired charging and wireless charging provided by an embodiment of the present application.
  • Fig. 3 is a schematic diagram of an electronic device provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of a wireless charging structure provided by an embodiment of the present application.
  • Fig. 5 is a schematic diagram of another electronic device provided by an embodiment of the present application.
  • Fig. 6 is a schematic diagram of another electronic device provided by an embodiment of the present application.
  • Fig. 7 is a schematic diagram of another electronic device provided by an embodiment of the present application.
  • the electronic device used in the embodiments of this application may refer to a terminal, and the “terminal” may include, but is not limited to, set to be connected via a wired line (such as via the Public Switched Telephone Network (PSTN), digital Subscriber Line (DSL), digital cable, direct cable connection, and/or another data connection/network) and/or via (for example, for cellular network, Wireless Local Area Network (WLAN), such as Digital Video Broadcasting Handheld (DVB-H) network, digital TV network, satellite network, AM-FM (Amplitude Modulation-Frequency Modulation, AM-FM) broadcast transmitter, and/or another communication terminal)
  • a device that receives/transmits communication signals on a wireless interface may be referred to as a "wireless communication terminal", a "wireless terminal", and/or a "mobile terminal”.
  • Examples of electronic devices include, but are not limited to, satellite or cellular phones; Personal Communication System (PCS) terminals that can combine cellular radio phones with data processing, fax, and data communication capabilities; can include radio phones, pagers, and the Internet/ Personal Digital Assistant (PDA) with intranet access, web browser, memo pad, calendar, and/or Global Positioning System (GPS) receiver; and conventional laptop and/or palmtop Receiver or other electronic device including a radio telephone transceiver.
  • the electronic device may refer to that the mobile terminal is a device or a handheld terminal device, such as a mobile phone, a pad, and so on.
  • the electronic device mentioned in the embodiments of the present application may refer to a chip system. In this embodiment, the battery of the electronic device may or may not belong to the chip system.
  • electronic devices can also include other electronic devices that require charging, such as mobile phones, mobile power sources (such as power banks, travel chargers, etc.), electric cars, laptops, drones, tablets, e-books, e-cigarettes, and smart phones.
  • Electronic equipment and small electronic products, etc. Smart electronic devices may include, for example, watches, bracelets, smart glasses, and sweeping robots.
  • Small electronic products may include, for example, wireless headsets, Bluetooth speakers, electric toothbrushes, and rechargeable wireless mice.
  • FIG. 1 shows a wireless charging system provided by an embodiment of the present application.
  • the wireless charging method will be briefly introduced below in conjunction with FIG. 1.
  • the wireless charging system may include a power supply device 110, a wireless transmitting device 120, and an electronic device 130.
  • the wireless transmitting device 120 may be, for example, a wireless charging base
  • the electronic device 130 may be, for example, a terminal.
  • the wireless transmitting device 120 may convert the output voltage and output current of the power supply device 110 into a wireless charging signal (for example, an electromagnetic signal) for transmission through an internal wireless transmitting circuit 122.
  • the wireless transmitting circuit 122 can convert the output current of the power supply device 110 into alternating current, and convert the alternating current into a wireless charging signal through a transmitting coil or a transmitting antenna (not shown in the figure).
  • the third voltage conversion circuit can convert the voltage output by the power supply device 110, and the micro-control unit 123 can control the voltages of the third voltage conversion circuit 121 and the wireless transmitting circuit 122.
  • the power supply device can be a device such as an adapter, a power bank, a car charger, or a computer.
  • the electronic device 130 may receive the wireless charging signal transmitted by the wireless transmitting circuit 122 through the wireless receiving circuit 131, and convert the wireless charging signal into the output voltage and output current of the wireless receiving circuit 131.
  • the wireless receiving circuit 131 can convert the electromagnetic signal emitted by the wireless transmitting circuit 122 into alternating current through a receiving coil or a receiving antenna (not shown in the figure), and perform operations such as rectification and/or filtering on the alternating current, and the alternating current Converted into the output voltage and output current of the wireless receiving circuit 131, the output voltage and output current received by the wireless receiving circuit 131 are adjusted by the voltage conversion module 132 or the charging management circuit 136 to obtain the expected value of the battery 133 in the electronic device 130
  • the charging voltage and/or charging current requirements can be realized to charge the battery 133.
  • the charging management circuit 136 may be, for example, a charging integrated circuit (IC).
  • the detection module 135 in the implementation of this application can detect the information of the battery 133, such as battery temperature, battery voltage and battery current, etc., and can also detect the output current and output voltage of the voltage conversion module 132 or the charging management circuit 136 and the wireless receiving circuit 131. Output voltage and output current, etc.
  • FIG. 2 shows a schematic structural diagram of an electronic device that supports wireless charging and wired charging at the same time.
  • the electronic device may include a wireless charging module.
  • a wireless charging module includes a receiving coil and a wireless receiving circuit.
  • the receiving coil can be used to receive the wireless charging signal transmitted by the transmitting coil
  • the wireless receiving circuit can be used to convert the wireless charging signal received by the receiving coil into a charging voltage and a charging current.
  • the load switch can be used to implement overvoltage protection to prevent the output voltage of the wireless receiving circuit from being too large and damaging the subsequent circuit.
  • the step-down circuit 1 can be used to step down the output voltage of the wireless receiving circuit
  • the step-down circuit 2 can be used to step down the output voltage of the step-down circuit 1
  • the voltage after the step-down circuit 2 can be used to charge the battery .
  • the voltage after the step-down circuit 2 is about 5V, which can match the charging demand of the battery.
  • the maximum output voltage and output current of the wireless receiving circuit is 20V2A, which becomes 10V4A after being stepped down by the step-down circuit 1, and 5V8A after being stepped down by the step-down circuit 2. Therefore, limited by the maximum output voltage and output current of the wireless receiving circuit, the electronic device shown in Figure 2 can only achieve a maximum wireless charging power of 40W.
  • the electronic device shown in Figure 2 may also include a wired charging module.
  • the maximum output voltage and current received from the universal serial bus (USB) port is 10V4A, which enters after the overvoltage protection circuit The charge management circuit, and then through the step-down circuit 2 becomes 5V8A and then enters the battery. Therefore, limited by the maximum output voltage and output current of the USB port, the electronic device shown in Figure 2 can only achieve a maximum wired charging power of 40W.
  • the above-mentioned maximum wireless charging power and maximum wired charging power can no longer meet the charging needs of users, so it is necessary to seek a faster wireless charging method and a wired charging method.
  • the embodiments of the present application provide an electronic device that can provide a faster wireless charging speed and a wired charging speed.
  • the electronic device may include a battery 240, multiple wireless charging modules, and multiple wired charging modules.
  • the multiple wireless charging modules are used to charge the battery 240, and the multiple wireless charging modules respectively include wireless receiving circuits, that is, different wireless charging modules include different wireless receiving circuits 210.
  • the multiple wired charging modules can be used to charge the battery 240 according to the output voltage and output current of the power supply device 220.
  • the electronic device may further include a control module configured to control at least one of the plurality of wireless charging modules and/or at least one of the plurality of wired charging modules to charge the battery.
  • a control module configured to control at least one of the plurality of wireless charging modules and/or at least one of the plurality of wired charging modules to charge the battery.
  • control module may be an application processor (AP), a charge IC, or a microcontroller unit (MCU). ) And other chips or modules that can perform control functions.
  • AP application processor
  • charge IC charge IC
  • MCU microcontroller unit
  • the power supply device 220 can transmit the charging current and the charging voltage through a charging interface (such as a USB port) to charge the battery.
  • a charging interface such as a USB port
  • the charging speed can be improved.
  • the electronic device includes m wireless charging modules, m is an integer greater than 1, and the maximum charging power of each wireless charging module to charge the battery is 40W, then the maximum charging power that m wireless charging modules can provide for the battery is m* 40W is m times the charging speed of the electronic device shown in FIG. 2.
  • n is an integer greater than 1
  • the maximum charging power that n wired charging modules can provide for the battery is n* 40W is n times the charging speed of the electronic device shown in FIG. 2.
  • the wireless charging module may include a receiving coil, a wireless receiving circuit, and a step-down circuit
  • the wired charging module may include a step-down circuit
  • Each of the multiple wireless charging modules in the embodiment of the present application may include a first voltage conversion circuit, and the output terminal of one wireless receiving circuit may be connected to the input terminal of at least one first voltage conversion circuit.
  • a first voltage conversion circuit is used for voltage conversion of the output voltage and output current of a wireless receiving circuit, and the converted voltage and current are used for charging the battery.
  • the multiple first voltage conversion circuits may be connected in series or in parallel.
  • the first voltage conversion circuits connected in parallel can reduce the heat generated during the conversion process.
  • the output terminal of a wireless receiving circuit can be connected to the input terminal of a first voltage conversion circuit, and the output terminal of the first voltage conversion circuit is connected to the battery, that is, a first voltage conversion circuit is used to connect the output voltage of a wireless receiving circuit and The output current undergoes voltage conversion, and the voltage and current converted by the first voltage conversion circuit can be used to charge the battery.
  • the output terminal of one wireless receiving circuit can be connected to the input terminals of the multiple first voltage conversion circuits, and the output terminals of the multiple first voltage conversion circuits are all connected to the battery, that is, the multiple first voltage conversion circuits are connected in parallel with each other.
  • the reduced voltage can be used to charge the battery.
  • the output terminal of one wireless receiving circuit can be connected to the input terminals of two voltage conversion circuits 230, and the two voltage conversion circuits 230 jointly convert the output voltage of the wireless receiving circuit 210, thereby reducing Heat on each voltage conversion circuit 230.
  • the multiple wireless charging modules in the embodiments of the present application may further include multiple receiving coils, and one receiving coil may correspond to one wireless receiving circuit, that is, one receiving coil is connected to the input terminal of one wireless receiving circuit.
  • the receiving coil can be used to receive the electromagnetic signal emitted by the transmitting coil and convert the electromagnetic signal into voltage and current for input to the wireless receiving circuit.
  • the wireless receiving circuit can rectify and/or filter the voltage and current to obtain the output voltage and output current of the wireless receiving circuit, and then the output voltage and output current are subjected to voltage conversion through the first voltage conversion circuit, and the converted voltage and The current is used to charge the battery.
  • the first voltage conversion circuit in the embodiment of the present application may have a voltage step-up or step-down function as required. If the output voltage of the wireless receiving circuit is greater than the charging voltage required by the battery, the first voltage conversion circuit may be a step-down circuit; if the output voltage of the non-receiving circuit is less than the charging voltage required by the battery, the first voltage conversion circuit may be Boost circuit.
  • the first voltage conversion circuit can be a buck circuit or a charge pump; if the first voltage conversion circuit is a boost circuit, then The first voltage conversion circuit may be a boost circuit or a boost charge pump, which is not specifically limited in the embodiment of the present application.
  • the charge pump has a fixed conversion multiple.
  • the conversion multiple can refer to the ratio between the output voltage of the voltage conversion circuit and the input voltage.
  • the charge pump is mainly composed of switching devices. The heat generated by the current flowing through the switching devices is very small, and it is almost directly related to the current. After the wires are equal, the use of a charge pump as the voltage conversion circuit can reduce heat generation. Therefore, the first voltage conversion circuit in the embodiment of the present application can use a charge pump to reduce heat generation.
  • the conversion multiple in the embodiment of the present application may refer to a boost multiple or a step-down multiple.
  • each of the multiple wired charging modules in the embodiment of the present application may be provided with a second voltage conversion circuit.
  • the second voltage conversion circuit is used to perform voltage conversion on the output voltage and output current of the power supply device, and the voltage and current after the voltage conversion are used to charge the battery.
  • the description of the second voltage conversion circuit can refer to the above description.
  • the voltage ratio of the output voltage to the input voltage of the first voltage conversion circuit and the second voltage conversion circuit may both be 1:N, or the embodiment of the present application may be connected in series. Multiple conversion circuits with a conversion ratio of 1:2 are implemented, where N is an integer greater than or equal to 2.
  • the conversion factor of the first voltage conversion circuit can be both 1:2
  • the conversion factor of the second voltage conversion circuit can be both 1:2
  • the conversion factor of the first voltage conversion circuit may be all 1:2, and the embodiment of the present application may use two first voltage conversion circuits connected in series to connect the wireless receiving circuit. The output voltage and output current are converted.
  • the battery in the embodiment of the present application may include one battery cell, or may include multiple battery cells connected in series.
  • the charging voltage required by the battery is about 10V
  • the first voltage conversion circuit only needs to convert the voltage to about 10V.
  • the first voltage conversion circuit can be a step-down circuit, and the step-down multiple of the step-down circuit can be 1:2, that is, the first voltage conversion circuit can be used to convert 20V2A
  • the input is converted to 10V4A output to charge the battery.
  • the charging voltage required by the battery is about 5V
  • the first voltage conversion circuit needs to convert the voltage to about 5V.
  • the first voltage conversion circuit can be a step-down circuit, and the step-down multiple of the step-down circuit can be 1:4, that is, the first voltage conversion circuit can be used to convert a 20V2A
  • the input is converted to 5V8A output to charge the battery.
  • the embodiment of the present application may adopt a manner of connecting two first voltage conversion circuits in series to convert the output voltage and output current of the wireless receiving circuit. It is assumed that the two first voltage conversion circuits are connected in series.
  • a voltage conversion circuit is a first voltage conversion circuit a and a first voltage conversion circuit b.
  • the first voltage conversion circuit a and the first voltage conversion circuit b are connected in series with each other.
  • the conversion between the first voltage conversion circuit a and the first voltage conversion circuit b The multiples are all 1:2.
  • the first voltage conversion circuit a can be used to convert the 20V2A output of the wireless receiving circuit into 10V4A output voltage and output current
  • the first voltage conversion circuit b can be used to convert the 10V4A output voltage and output current into 5V8A output voltage and output. Current to charge the battery.
  • the first voltage conversion circuit and the second voltage conversion circuit in the embodiments of the present application may be the same circuit or different circuits.
  • first voltage conversion circuit and the second voltage conversion circuit are different circuits, it means that the wireless charging module and the wired charging module each use independent voltage conversion circuits for voltage conversion. In this case, the conversion multiples of the first voltage conversion circuit and the second voltage conversion circuit may be the same or different.
  • the voltage conversion circuit can perform voltage conversion on the output voltage of the wireless receiving circuit during the wireless charging process, and can also perform voltage conversion on the output voltage of the power supply device during the wired charging process.
  • the voltage conversion circuit By multiplexing the voltage conversion circuit, one voltage conversion circuit realizes the voltage conversion function in different charging processes, which can save space, improve the integration level of the chip, and reduce the volume of electronic equipment.
  • the voltage conversion circuit 230 may be a first voltage conversion circuit or a second voltage conversion circuit.
  • the voltage conversion circuit 230 can be used to receive the output voltage and output current of the wireless receiving circuit 210, and convert the output voltage and output current of the wireless receiving circuit 210; in the wired charging process, the voltage conversion circuit 230 can be used It receives the output voltage and output current of the power supply device 220, and converts the output voltage and output current of the power supply device 220.
  • the multiple wired charging modules and the multiple wireless charging modules described above are all fast charging modules.
  • the wireless charging signal emitted by the transmitting coil can be adjusted according to the charging demand of the battery, so that the adjusted wireless charging signal can match the charging demand of the battery.
  • the first voltage conversion circuit only needs to be in accordance with a fixed conversion multiple. You can charge the battery by switching.
  • the output voltage and output current of the power supply device can be adjusted according to the charging requirements of the battery, so that the adjusted voltage and current can match the charging requirements of the battery.
  • the second voltage conversion circuit only needs to be converted according to a fixed The multiples can be converted to charge the battery.
  • the electronic equipment in the embodiments of the present application may also include a common charging module, which can be applied to common power supply equipment, which means that the output voltage and output current cannot be adjusted. Power supply equipment.
  • the electronic device includes a charging management circuit
  • the charging management circuit can be used to adjust the output voltage of the power supply device so that the adjusted voltage can match the charging demand of the battery.
  • the charging management circuit can be, for example, a buck or boost circuit, which does not have a fixed conversion multiple. Since the output voltage and output current of the power supply device are fixed, the charging management circuit can adjust the conversion multiple to make its output voltage and output The current matches the charging requirements of the battery.
  • the electronic device may also include a third voltage conversion circuit, one end of the third voltage conversion circuit may be connected to the battery, and the other end of the third voltage conversion circuit may be connected to the electrical system of the electronic device, the third voltage conversion circuit It can be used to convert the output voltage of the battery during the power supply process to supply power to the electrical system of electronic equipment.
  • the output voltage of the multi-cell battery is relatively large, it is not suitable for directly supplying power to the electric system, and the output voltage of the battery can be converted into the voltage required by the electric system through the third voltage conversion circuit.
  • the conversion multiple of the third voltage conversion circuit is related to the number of cells included in the battery.
  • the conversion multiple of the third voltage conversion circuit can be 1: 2. Convert the output voltage of the battery to 5V to supply power to the electrical system. If the battery includes three battery cells, the conversion multiple of the third voltage conversion circuit may be 1:3 during the power supply process. If the battery includes M battery cells, and M is a positive integer, the conversion multiple of the third voltage conversion circuit can be 1:M during the power supply process.
  • the third voltage conversion circuit may be a bidirectional conversion circuit, and one end of the third voltage conversion circuit may also be connected to the output end of the charge management circuit. During the charging process, the third voltage conversion circuit can convert the output voltage and output current of the charging management circuit, so that the converted voltage and current match the charging requirements of the battery.
  • the use of a bidirectional charge pump can reduce the required devices and circuits, help improve the integration of the chip, and reduce the volume.
  • a third voltage conversion circuit may be connected to the output end of the charging management circuit for charging The output voltage and output current of the management circuit are boosted, so that the boosted voltage and current can meet the charging requirements of the battery.
  • the third voltage conversion circuit may not be required to boost the voltage during the charging process and directly charge the multi-cell battery.
  • the conversion multiple of the third voltage conversion circuit is related to the number of cells included in the battery, and the conversion multiple may refer to the ratio between the output voltage and the input voltage of the third voltage conversion circuit. If the battery includes M battery cells, M is a positive integer, and assuming that the output voltage of the charging management circuit is 5V, the conversion multiple of the voltage conversion circuit can be M:1 during the charging process. For example, if the battery includes two battery cells, the conversion multiple of the third voltage conversion circuit can be 2:1 during the charging process; if the battery includes 3 battery cells, the third voltage The conversion multiple of the conversion circuit can be 3:1.
  • the third voltage conversion circuit may be a bidirectional charge pump, and the bidirectional charge pump may be used as a boost circuit during the charging process, and may be used as a step-down circuit during the power supply process.
  • the embodiment of the present application may also use two different third voltage conversion circuits for voltage conversion during the power supply and charging process, one of which is used for voltage conversion during the power supply process, and the other is used for voltage conversion during the charging process.
  • Voltage conversion is not specifically limited in the embodiment of the present application.
  • the electronic device may also include a charging interface and a load switch, and the load switch may be used to protect the circuit during the charging process.
  • One end of the load switch can be connected to the charging interface, and the other end is connected to the second voltage conversion circuit.
  • the charging interface can be used to receive the output voltage and output current of the power supply device.
  • the load switch can be used to measure the output voltage of the power supply device. Adjust so that the adjusted voltage does not exceed the preset voltage, so as to avoid excessive voltage received by the subsequent circuit from being damaged.
  • the load switch can also perform voltage protection during the wireless charging process.
  • one end of the load switch is connected to the output terminal of the wireless receiving circuit to monitor the output voltage and output current of the wireless receiving circuit. Adjust so that the adjusted voltage does not exceed the preset voltage.
  • the load switch Due to the relatively high level of integration of the load switch, it can be used to achieve voltage protection for multiple charging channels.
  • multiple wired receiving modules may share a load switch, or wired receiving modules and wireless receiving modules may also share a load switch.
  • the electronic device may also include an overvoltage protection circuit, which is used to protect subsequent circuits during the charging process to avoid circuit damage caused by excessive voltage.
  • One end of the overvoltage protection circuit can be connected to the charging interface, and the other end is connected to the input end of the second voltage conversion circuit or the charging management circuit.
  • the charging interface can be used to receive the output voltage and output current of the power supply device, and the overvoltage protection circuit can be used to adjust the output voltage and output current of the power supply device so that the adjusted voltage does not exceed the preset voltage.
  • the embodiment of the present application may include multiple overvoltage protection circuits, that is, one overvoltage protection circuit may be provided on each charging channel.
  • multiple overvoltage protection circuits can be implemented by one load switch, and one load switch can integrate multiple overvoltage protection circuits on one chip, thereby reducing the volume of electronic equipment.
  • the electronic device provided in the present application will be described below with reference to specific embodiments, taking the battery including two battery cells as an example. Using two battery cells in series as the battery, the electronic device can charge the battery without stepping down to 5V, but only needs to step down to 10V.
  • the electronic device may include two wireless charging modules and two wired charging modules for charging two battery cells.
  • the two wireless charging modules may include two wireless receiving circuits and two receiving coils.
  • the first wireless charging module can include coil 1, wireless receiving circuit 1, and charge pump 1.
  • the input end of wireless receiving circuit 1 is connected to coil 1, the output end is connected to charge pump 1, and the output end of charge pump 1 is connected to power saving 2. ⁇ Core connection.
  • the coil 1 can be used to receive the wireless charging signal transmitted by the transmitting coil (not shown in the figure).
  • the wireless receiving circuit 1 can be used to convert the wireless charging signal into a 20V2A output.
  • the charge pump 1 has a step-down multiple of 1:2. Convert the voltage and current of 20V2A to the voltage and current of 10V4A to charge the two batteries.
  • the second wireless charging module can include a coil 2, a wireless receiving circuit 2 and a charge pump 2.
  • the input end of the wireless receiving circuit 2 is connected to the coil 2, the output end is connected to the charge pump 2, and the output end of the charge pump 2 is connected to the 2 battery-saving core connection.
  • the coil 2 can be used to receive the wireless charging signal transmitted by the transmitting coil (not shown in the figure), and the wireless receiving circuit 2 can be used to convert the wireless charging signal into a 20V2A output.
  • the charge pump 2 has a step-down multiple of 1:2, which can be Convert the voltage and current of 20V2A to the voltage and current of 10V4A to charge the two batteries.
  • Two wireless charging modules are used to charge the battery. Each wireless charging module can charge the battery with a maximum charging power of 40W. Two charging modules can provide 80W of charging power to the battery. Compared with a wireless charging module, the charging can be improved. speed. In addition, if the charging power of the battery is the same, the use of two coils for charging can also share the heat and reduce the heat generated by each coil.
  • Two wired charging modules can include two overvoltage protection circuits and two step-down circuits. These two overvoltage protection circuits can protect subsequent circuits (such as charge pump 1, charge pump 2) to avoid excessive voltage. The circuit is damaged.
  • the first wired charging module includes an overvoltage protection circuit 1 and a charge pump 1
  • the second wired charging module includes an overvoltage protection circuit 2 and a charge pump 2.
  • the electronic device can receive the 20V6A charging voltage output by the power supply device from the USB port And the charging current, the 20V6A charging voltage and charging current received by the USB port can be divided into two ways to enter the overvoltage protection circuit 1 and the overvoltage protection circuit 2.
  • the overvoltage protection circuit 1 and the overvoltage protection circuit 2 respectively receive a voltage and current of 20V3A After the charge pump 1 and charge pump 2, both become 10V6A voltage and current, so as to charge the two batteries.
  • the output voltage and output current of the above-mentioned power supply device are adjustable and can be adjusted according to the charging requirements of the battery.
  • Each wired charging module can achieve a wired charging power of 40-60W, and two wired charging modules can achieve a wired charging power of 80-120W, which can increase the wired charging speed.
  • the wired charging module also includes a common charging module, which can be compatible with common adapters, so that electronic devices have good compatibility.
  • the electronic device can receive the voltage and current output by the adapter from the USB port, the load switch can protect the subsequent circuit, and the charging management circuit can adjust the output voltage and output current of the adapter so that the adjusted output voltage and current can be adjusted.
  • the voltage and current can be matched with the charging requirements of the battery.
  • a bidirectional charge pump can also be connected between the charging management circuit and the battery.
  • the bidirectional charge pump works in 1:2 mode, and can double the voltage of 3-5V of the charge management circuit to 6-10V to charge the two battery cells.
  • the bidirectional charge pump works in 2:1 mode, which can step down the output voltage of 6-10V of the two battery cells to 3-5V to supply power to the electrical system.
  • the embodiment of the present application also provides another electronic device, as shown in FIG. 6.
  • the electronic device shown in FIG. 6 can connect multiple charge pumps in parallel behind the wireless receiving circuit to achieve the function of step-down.
  • a charge pump 1 and a charge pump 3 connected in parallel can be connected behind the wireless receiving circuit 1, and the charge pump 1 and the charge pump 3 are jointly used to step down the output voltage of the wireless receiving circuit 1. Since the charge pump 1 and the charge pump 3 have a shunting function, the current flowing through each charge pump will be reduced, so that the heat of the charge pump can be reduced.
  • the embodiments of the present application are not limited to using two wireless charging modules and two wired charging modules to charge the battery, and more charging modules may be used to charge the battery.
  • three wireless charging modules can be used to charge the battery.
  • the electronic device can also include a coil 3, a wireless receiving circuit 3, and a charge pump 3.
  • the coil 3 can receive the wireless charging signal emitted by the transmitting coil.
  • the wireless receiving circuit 3 can convert the wireless charging signal into a current and voltage.
  • the charge pump 3 can The output voltage of the receiving circuit 3 is stepped down to charge the battery.
  • the wireless charging power can be continuously increased to 60-90W, which can further increase the charging speed.
  • FIG. 7 is only an example, and the electronic device may also include more charging modules. For the sake of brevity, it will not be repeated here.
  • the wireless receiving circuit and the step-down circuit can be integrated in the same wireless charging chip, which can improve the integration degree of the electronic device and simplify the implementation of the electronic device.
  • the function of the wireless charging chip can be expanded to support the charging management function.
  • the multiple battery cells mentioned in the embodiments of the present application refer to multiple battery cells connected in series with each other.
  • the computer program product includes one or more computer instructions.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center integrated with one or more available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a Digital Video Disc (DVD)), or a semiconductor medium (for example, a Solid State Disk (SSD)), etc.
  • the disclosed system, device, and method can be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • first, second, etc. may be used in this application to describe various devices, these devices should not be limited by these terms. These terms are only used to distinguish one device from another.
  • the first device can be called the second device, and similarly, the second device can be called the first device, as long as all occurrences of "first device” are renamed consistently and all occurrences
  • the “second device” can be renamed consistently.
  • the first device and the second device are both devices, but they may not be the same device.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.

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Abstract

本申请提供了一种电子设备。该电子设备包括：电池(240)；多个无线充电模块，用于为所述电池(240)充电，其中，所述多个无线充电模块分别包括无线接收电路(210)；多个有线充电模块，用于根据电源提供设备(220)的输出电压和输出电流，为所述电池(240)充电；控制模块，用于控制所述多个无线充电模块中的至少一个和/或所述多个有线充电模块中的至少一个为所述电池(240)充电。

Description

电子设备
优先权信息
本申请请求2019年12月24日向中国国家知识产权局提交的、申请号为201911349368.8的专利申请的优先权和权益，并且通过参照将其全文并入此处。
技术领域
本申请涉及充电领域，更为具体地，涉及一种电子设备。
背景技术
目前，越来越多的电子设备可以同时支持有线充电和无线充电。
随着用户对电子设备的充电速度要求越来越高，有线充电和无线充电的速度均已不能满足用户的需求，因此，如何进一步提高电子设备的充电速度成为亟需解决的问题。
发明内容
本申请提供一种电子设备，能够为电子设备提供更快的有线充电速度和无线充电速度。
第一方面，提供了一种电子设备，包括：电池；多个无线充电模块，用于为所述电池充电，其中，所述多个无线充电模块分别包括无线接收电路；多个有线充电模块，用于根据电源提供设备的输出电压和输出电流，为所述电池充电；控制模块，用于控制所述多个无线充电模块中的至少一个和/或所述多个有线充电模块中的至少一个为所述电池充电。
基于上述技术方案，电子设备可以包括多个无线充电模块和多个有线充电模块，相比于一个无线充电模块和一个有线充电模块，能够提高电池接收到的充电功率，从而能够提高充电速度。
附图说明
图1是本申请实施例提供的一种无线充电系统的示意图。
图2是本申请实施例提供的一种支持有线充电和无线充电的电子设备的示意图。
图3是本申请实施例提供的一种电子设备的示意图。
图4是本申请实施例提供的一种无线充电结构的示意图。
图5是本申请实施例提供的另一种电子设备的示意图。
图6是本申请实施例提供的另一种电子设备的示意图。
图7是本申请实施例提供的另一种电子设备的示意图。
具体实施方式
下面将结合附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本申请的一部分实施例，而不是全部实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都应属于本申请保护的范围。
本申请实施例中所使用到的电子设备可以是指终端，该“终端”可包括，但不限于被设置成经由有线线路连接(如经由公共交换电话网络(Public Switched Telephone Network，PSTN)、数字用户线路(Digital Subscriber Line，DSL)、数字电缆、直接电缆连接，以及/或另一数据连接/网络)和/或经由(例如，针对蜂窝网络、无线局域网(Wireless Local Area Network，WLAN)、诸如手持数字视频广播(Digital Video Broadcasting Handheld，DVB-H)网络的数字电视网络、卫星网络、调幅-调频(Amplitude Modulation-Frequency Modulation，AM-FM)广播发送器，以及/或另一通信终端的)无线接口接收/发送通信信号的装置。被设置成通过无线接口通信的终端可以被称为“无线通信终端”、“无线终端”以及/或“移动终端”。
电子设备的示例包括，但不限于卫星或蜂窝电话；可以组合蜂窝无线电电话与数据处理、传真以及数据通信能力的个人通信系统(Personal Communication System，PCS)终端；可以包括无线电电话、寻呼机、因特网/内联网接入、Web浏览器、记事簿、日历以及/或全球定位系统(Global Positioning System,GPS)接收器的个人数字助理(Personal Digital Assistant，PDA)；以及常规膝上型和/或掌上型接收器或包括无线电电话收发器的其它电子装置。在某些实施例中，电子设备可指移动终端是设备或手持终端设备，如手机、pad等。在某些实施例中，本申请实施例提及的电子设备可以是指芯片系统，在该实施例中，电子设备的电池可以属于或也可以不属于该芯片系统。
另外，电子设备还可以包括其他有充电需求的电子设备，例如手机、移动电源(如充电宝、旅充等)、电动汽车、笔记本电脑、无人机、平板电脑、电子书、电子烟、智能电子设备和小型电子产品等。智能电子设备例如可以包括手表、手环、智能眼镜和扫地机器人等。小型电子产品例如可以包括无线耳机、蓝牙音响、电动牙刷和可充电无线鼠标等。
为了更加清楚地理解本申请的方案，以下将简单介绍无线充电工作原理。但应理解，以下介绍的内容仅仅是为了更好的理解本申请，不应对本申请造成特别限定。
图1所示的是本申请实施例提供的无线充电系统，下面结合图1对无线充电方式进行简单介绍。
如图1所示，无线充电系统可以包括电源提供设备110、无线发射装置120以及电子设备130，其中无线发射装置120例如可以是无线充电底座，电子设备130例如可以是终端。
电源提供设备110与无线发射装置120连接之后，会将电源提供设备110的输出电压和输出电流传输至无线发射装置120。无线发射装置120可以通过内部的无线发射电路122将电源提供设备110的输出电压和输出电流转换成无线充电信号(例如，电磁信号)进行发射。例如，该无线发射电路122可以将电源提供设备110的输出电流转换成交流电，并通过发射线圈或发射天线(图中未示出)将该交流电转换成无线充电信号。其中，第三电压转换电路可以对电源提供设备110输出的电压进行转换，微控制单元123可以控制第三电压转换电路121和无线发射电路122的电压。
本申请对电源提供设备的类型不做具体限定。例如，电源提供设备可以为适配器、移动电源(power bank)、车载充电器或电脑等设备。
电子设备130可以通过无线接收电路131接收无线发射电路122发射的无线充电信号，并将该无线充电信号转换成无线接收电路131的输出电压和输出电流。
例如，该无线接收电路131可以通过接收线圈或接收天线(图中未示出)将无线发射电路122发射的电磁信号转换成交流电，并对该交流电进行整流和/或滤波等操作，将该交流电转换成无线接收电路131的输出电压和输出电流，通过电压转换模块132或充电管理电路136对无线接收电路131接收的输出电压和输出电流进行调节，以得到电子设备130内的电池133所预期的充电电压和/或充电电流的需求，从而可以实现为电池133的充电。
上述充电管理电路136例如可以为充电集成电路(integrated circuit，IC)。
本申请实施中的检测模块135可以检测电池133的信息，例如电池温度，电池电压和电池电流等，也可以检测电压转换模块132或充电管理电路136的输出电流和输出电压以及无线接收电路131的输出电压和输出电流等。
本申请实施例提供的电子设备除了可以支持无线充电外，还可以支持有线充电。图2示出的是同时支持无线充电和有线充电的电子设备的示意性结构图。
如图2所示，该电子设备可以包括一个无线充电模块。一个无线充电模块包括一个接收线圈和一个无线接收电路，接收线圈可用于接收发射线圈发射的无线充电信号，无线接收电路可用于将接收线圈接收的无线充电信号转换为充电电压和充电电流。负载开关可用于实现过压保护，防止无线接收电路的输出电压过大，损坏后续电路。降压电路1可用于对无线接收电路的输出电压进行降压，降压电路2可用于对降压电路1的输出电压进行降压，经过降压电路2降压后的电压可用于对电池充电。对于包括1节电芯的电池来说，经过降压电路2降压后的电压为5V左右，能够与电池的充电需求相匹配。
无线接收电路的最大输出电压和输出电流为20V2A，经过降压电路1降压后变为10V4A，经过降压电路2降压后变为5V8A。因此，受限于无线接收电路的最大输出电压和输出电流，图2所示的电子设备只能实现最大40W的无线充电功率。
图2所示的电子设备还可以包括有线充电模块，为了避免发热严重，从通用串行总线(universal serial bus，USB)口接收到的最大输出电压和电流为10V4A，经过过压保护电路后进入充电管理电路，然后经过降压电路2变为5V8A后进入电池。因此，受限于USB口的最大输出电压和输出电流，图2所示的电子设备只能实现最大40W的有线充电功率。
上述最大无线充电功率和最大有线充电功率已不能满足用户的充电需求，因此需要寻求一种更快的无线充电方式和有线充电方式。
本申请实施例提供一种电子设备，能够提供一种更快的无线充电速度和有线充电速度。
如图3所示，该电子设备可以包括电池240，多个无线充电模块和多个有线充电模块。该多个无线充电模块用于为电池240充电，且该多个无线充电模块分别包括无线接收电路，即不同无线充电模块包括不同的无线接收电路210。该多个有线充电模块可用于根据电源提供设备220的输出电压和输出电流，为电池240充电。
此外，该电子设备还可以包括控制模块，该控制模块用于控制多个无线充电模块中的至少一个和/或多个有线充电模块中的至少一个为电池充电。
本申请实施例对控制模块的结构不做具体限定，例如，该控制模块可以为应用处理器(application processor，AP)，也可以为充电集成电路(charge IC)、微控制单元(microcontroller unit，MCU)等可以执行控制功能的芯片或模块。
可以理解的是，电源提供设备220可通过充电接口(如USB口)传输充电电流和充电电压，以为电池充电。
本申请实施例通过设置多个无线充电模块和多个有线充电模块，相比于图2所示的一个无线充电模块和一个有线充电模块，能够提高充电速度。假设电子设备包括m个无线充电模块，m为大于1的整数，每个无线充电模块为电池充电的最大充电功率为40W，则m个无线充电模块能够为电池提提供的最大充电功率为m*40W，即为图2所示的电子设备的充电速度的m倍。假设电子设备包括n个有线充电模块，n为大于1的整数，每个有线充电模块为电池充电的最大充电功率为40W，则n个有线充电模块能够为电池提提供的最大充电功率为n*40W，即为图2所示的电子设备的充电速度的n倍。
可以理解的是，无线充电模块可以包括接收线圈、无线接收电路、降压电路，有线充电模块可以包括降压电路。
通常，为了减少线圈的发热，都是采用大电压小电流来发射无线充电信号，因此，无线接收电路的输出电压通常较大，不能直接用于给电池充电。本申请实施例中的多个无线 充电模块中的每个无线充电模块均可以包括第一电压转换电路，一个无线接收电路的输出端可以与至少一个第一电压转换电路的输入端连接，该至少一个第一电压转换电路用于对一个无线接收电路的输出电压和输出电流进行电压转换，转换后的电压和电流用于为电池充电。
一个无线接收电路的输出端与多个第一电压转换电路的输入端连接时，该多个第一电压转换电路之间可以是串联连接，也可以是并联连接。相互并联的第一电压转换电路可以减少转换过程中产生的热量。
一个无线接收电路的输出端可以与一个第一电压转换电路的输入端连接，第一电压转换电路的输出端与电池连接，即一个第一电压转换电路用于为一个无线接收电路的输出电压和输出电流进行电压转换，经过第一电压转换电路转换后的电压和电流可用于为电池充电。
当然，一个无线接收电路的输出端可以与多个第一电压转换电路的输入端均连接，多个第一电压转换电路的输出端均与电池连接，即该多个第一电压转换电路相互并联，共同对无线接收电路的输出电压进行转换，降压后的电压可用于为电池充电。例如，如图4所示，一个无线接收电路的输出端可以与两个电压转换电路230的输入端连接，该两个电压转换电路230共同对无线接收电路210的输出电压进行转换，从而能够减少每个电压转换电路230上的发热。
本申请实施例的多个无线充电模块还可以包括多个接收线圈，一个接收线圈可以对应一个无线接收电路，即一个接收线圈与一个无线接收电路的输入端连接。接收线圈可用于接收发射线圈发射的电磁信号，并将电磁信号转换成电压和电流输入至无线接收电路。无线接收电路可以对该电压和电流进行整流和/或滤波处理，得到无线接收电路的输出电压和输出电流，然后该输出电压和输出电流经过第一电压转换电路进行电压转换，转换后的电压和电流用于为电池充电。
本申请实施例中的第一电压转换电路可以根据需要具有升压或降压的功能。如果无线接收电路的输出电压大于电池所需的充电电压，则第一电压转换电路可以为降压电路；如果无接收电路的输出电压小于电池所需的充电电压，则第一电压转换电路可以为升压电路。
假设第一电压转换电路为降压电路，则第一电压转换电路可以为降压(buck)电路，也可以为降压电荷泵(charge pump)；假设第一电压转换电路为升压电路，则第一电压转换电路可以为升压(boost)电路，也可以为升压电荷泵，本申请实施例此不做具体限定。
电荷泵具有固定的转换倍数，转换倍数可以指电压转换电路的输出电压与输入电压之间的比值，且电荷泵主要由开关器件组成，电流流过开关器件产生的热量很小，几乎与电流直接经过导线相当，采用电荷泵作为电压转换电路能够减少发热，因此，本申请实施例 中的第一电压转换电路可以采用电荷泵以减少发热。
可以理解的是，本申请实施例中的转换倍数可以指升压倍数，也可以指降压倍数。
由于电源提供设备提供的电压较大，不能直接用于为电池充电，因此本申请实施例中的多个有线充电模块中的每个有线充电模块上均可以设置有第二电压转换电路，该第二电压转换电路用于对电源提供设备的输出电压和输出电流进行电压转换，电压转换后的电压和电流用于为电池充电。
与第一电压转换电路类似，有关第二电压转换电路的描述可以参照上文的描述。
假设电池包括N节相互串联的N节电芯，则第一电压转换电路与第二电压转换电路的输出电压与输入电压的电压比可以均为1:N，或者本申请实施例可以采用依次串联多个转换倍数为1:2的转换电路来实现，其中，N为大于或等于2的整数。
例如，若电池包括相互串联的2节电芯，则第一电压转换电路的转换倍数可以均为1:2，第二电压转换电路的转换倍数可以均为1:2。又例如，若电池包括相互串联的4节电芯，则第一电压转换电路的转换倍数可以均为1:2，本申请实施例可以采用2个串联的第一电压转换电路来对无线接收电路的输出电压和输出电流进行转换。
本申请实施例中的电池可以包括一节电芯，也可以包括依次串联的多节电芯。
假设电池包括两节电芯，则该电池所需的充电电压为10V左右，第一电压转换电路只需将电压转换到10V左右即可。假设一个无线接收电路的输出仍为20V2A，则第一电压转换电路可以为降压电路，且该降压电路的降压倍数可以为1:2，即该第一电压转换电路可用于将20V2A的输入转换为10V4A的输出以为电池充电。
假设电池包括一节电芯，则该电池所需的充电电压为5V左右，第一电压转换电路需要将电压转换到5V左右。假设一个无线接收电路的输出仍为20V2A，则第一电压转换电路可以为降压电路，且该降压电路的降压倍数可以为1:4，即该第一电压转换电路可用于将20V2A的输入转换为5V8A的输出以为电池充电。
当然，在电池仅包括一节电芯的情况下，本申请实施例可以采用两个第一电压转换电路串联的方式来对无线接收电路的输出电压和输出电流进行电压转换，假设该两个第一电压转换电路为第一电压转换电路a和第一电压转换电路b，第一电压转换电路a和第一电压转换电路b相互串联，第一电压转换电路a和第一电压转换电路b的转换倍数均为1:2。第一电压转换电路a可用于将无线接收电路的20V2A的输出转换为10V4A的输出电压和输出电流，第一电压转换电路b可用于将10V4A的输出电压和输出电流转换为5V8A的输出电压和输出电流，以为电池充电。
以上仅是以第一电压转换电路为例进行说明的，上述内容对第二电压转换电路也同样适用。
本申请实施例中的第一电压转换电路和第二电压转换电路可以为同一电路，也可以为不同的电路。
如果第一电压转换电路和第二电压转换电路为不同的电路，则表示无线充电模块和有线充电模块各自使用独立的电压转换电路进行电压转换。在该情况下，第一电压转换电路和第二电压转换电路的转换倍数可以相同，也可以不同。
如果第一电压转换电路和第二电压转换电路为同一电路，则表示有线充电模块和无线充电模块共用相同的电压转换电路。即该电压转换电路可以在无线充电过程中，对无线接收电路的输出电压进行电压转换，也可以在有线充电过程中，对电源提供设备的输出电压进行电压转换。通过复用电压转换电路，一个电压转换电路在不同的充电过程中实现电压转换功能，能够节省空间，提高芯片的集成度，减小电子设备的体积。
如图3所示，电压转换电路230可以为第一电压转换电路，也可以为第二电压转换电路。在无线充电过程中，电压转换电路230可用于接收无线接收电路210的输出电压和输出电流，并对无线接收电路210的输出电压和输出电流进行转换；在有线充电过程中，电压转换电路230可用于接收电源提供设备220的输出电压和输出电流，并对电源提供设备220的输出电压和输出电流进行转换。
需要说明的是，上文描述的多个有线充电模块和多个无线充电模块均为快速充电模块。在无线充电过程中，发射线圈发射的无线充电信号可以根据电池的充电需求进行调节，使得调节之后的无线充电信号可以与电池的充电需求相匹配，第一电压转换电路仅需要按照固定的转换倍数进行转换，即可为电池充电。在有线充电过程中，电源提供设备的输出电压和输出电流可以根据电池的充电需求进行调节，使得调节之后的电压电流可以与电池的充电需求相匹配，第二电压转换电路仅需要按照固定的转换倍数进行转换，即可为电池充电。
除了快速充电通道之外，本申请实施例中的电子设备还可以包括普通充电模块，该普通充电模块能够适用于普通的电源提供设备，普通的电源提供设备是指输出电压和输出电流不能调节的电源提供设备。
例如，该电子设备包括充电管理电路，充电管理电路可用于对电源提供设备的输出电压进行调整，使得调整之后的电压能够与电池的充电需求相匹配。
该充电管理电路例如可以为buck或boost电路，其没有固定的转换倍数，由于电源提供设备的输出电压和输出电流是固定的，因此，充电管理电路可通过调整转换倍数，使得其输出电压和输出电流与电池的充电需求相匹配。
如果电池包括多节电芯，则电子设备还可以包括第三电压转换电路，该第三电压转换电路的一端可以与电池连接，另一端与电子设备的用电系统连接，该第三电压转换电路可 用于在供电过程中，对电池的输出电压进行转换，以为电子设备的用电系统供电。
由于多节电芯的输出电压较大，不适合直接为用电系统供电，通过第三电压转换电路可以将电池的输出电压转换为用电系统所需要的电压。
可选地，第三电压转换电路的转换倍数与电池包括的电芯数目有关。
如果电池包括两节电芯，则该电池的输出电压为10V左右，而用电系统所需要的输入电压为5V，因此，在供电过程中，该第三电压转换电路的转换倍数可以为1:2，将电池的输出电压转换为5V，为用电系统供电。如果电池包括三节电芯，则在供电过程中，该第三电压转换电路的转换倍数可以为1:3。如果电池包括M节电芯，M为正整数，则在供电过程中，该第三电压转换电路的转换倍数可以为1:M。
该第三电压转换电路可以为双向转换电路，其一端还可以与充电管理电路的输出端连接。在充电过程中，该第三电压转换电路可对充电管理电路的输出电压和输出电流进行转换，使得转换之后的电压和电流与电池的充电需求相匹配。采用双向电荷泵能够减少所需的器件和电路，有助于提高芯片的集成度，减小体积。
目前大部分的充电管理电路都是为单节电芯设计的，其输出电压与单节电芯的充电需求相匹配，约为5V。如果电池从单节电芯变为多节电芯，现有的充电管理电路不能满足电池的充电需求，本申请实施例可以在充电管理电路的输出端连接第三电压转换电路，用于对充电管理电路的输出电压和输出电流进行升压，使得升压之后的电压和电流能够满足电池的充电需求。
当然，如果充电管理电路的输出电压和输出电流能够与多节电芯所需求的电压相匹配，则在充电过程中可以不需要第三电压转换电路进行升压，直接为多节电芯充电。
第三电压转换电路的转换倍数与电池包括的电芯数目有关，转换倍数可以指第三电压转换电路的输出电压与输入电压之间的比值。如果电池包括M节电芯，M为正整数，假设充电管理电路的输出电压为5V，则在充电过程中，该电压转换电路的转换倍数可以为M:1。例如，如果电池包括两节电芯，则在充电过程中，该第三电压转换电路的转换倍数可以为2:1；如果电池包括3节电芯，则在充电的过程中，该第三电压转换电路的转换倍数可以为3:1。
可选地，该第三电压转换电路可以为双向电荷泵，该双向电荷泵在充电过程中，可以作为升压电路，在供电过程中，可以作为降压电路。
当然，本申请实施例也可以在供电和充电过程中，采用两个不同的第三电压转换电路进行电压转换，其中一个用于在供电过程中进行电压转换，另一个用于在充电过程中进行电压转换，本申请实施例对此不做具体限定。
可选地，如图5所示，电子设备还可以包括充电接口和负载开关，该负载开关可用于 在充电过程中，对电路进行保护。该负载开关的一端可以与该充电接口连接，另一端与第二电压转换电路连接，该充电接口可用于接收电源提供设备的输出电压和输出电流，负载开关可用于对电源提供设备的输出电压进行调整，使得调整之后的电压不超过预设电压，以避免后续电路接收到的电压过大而受到损坏。
当然，该负载开关也可以在无线充电过程中进行电压保护，例如，如图5所示，该负载开关的一端与无线接收电路的输出端连接，以对无线接收电路的输出电压和输出电流进行调整，使得调整之后的电压不超过预设电压。
由于负载开关的集成度比较高，可用于对多个充电通道实现电压保护。例如，多个有线接收模块可以共用一个负载开关，或者，有线接收模块和无线接收模块也可以共用一个负载关。
可选地，电子设备还可以包括过压保护电路，用于在充电过程中，对后续电路进行保护，避免电压过大造成电路损坏。该过压保护电路的一端可以与充电接口连接，另一端与第二电压转换电路或充电管理电路的输入端连接。该充电接口可用于接收电源提供设备的输出电压和输出电流，该过压保护电路可用于对电源提供设备的输出电压和输出电流进行调整，使得调整之后的电压不超过预设电压。
本申请实施例可以包括多个过压保护电路，即可以在每个充电通道上均设置一个过压保护电路。
本申请实施例可以通过一个负载开关(load switch)来实现多个过压保护电路，一个负载开关可以将多个过压保护电路集成在一个芯片上，从而能够减小电子设备的体积。
下面结合具体的实施例，以电池包括两节电芯为例，对本申请提供的电子设备进行描述。采用两节串联电芯作为电池，电子设备可以无需降压到5V，只需要降压到10V即可为电池充电。
如图5所示，该电子设备可以包括两个无线充电模块和两个有线充电模块，用于为两节电芯充电。
两个无线充电模块可以包括两个无线接收电路和两个接收线圈。第一个无线充电模块可以包括线圈1、无线接收电路1和电荷泵1，无线接收电路1的输入端与线圈1连接，输出端与电荷泵1连接，电荷泵1的输出端与2节电芯连接。线圈1可用于接收发射线圈(图中未示出)发射的无线充电信号，无线接收电路1可用于将该无线充电信号转换为20V2A的输出，电荷泵1具有1:2的降压倍数，可以将20V2A的电压电流转换为10V4A的电压电流，以为两节电芯充电。类似地，第二个无线充电模块可以包括线圈2、无线接收电路2和电荷泵2，无线接收电路2的输入端与线圈2连接，输出端与电荷泵2连接，电荷泵2的输出端与2节电芯连接。线圈2可用于接收发射线圈(图中未示出)发射的无线充电信 号，无线接收电路2可用于将该无线充电信号转换为20V2A的输出，电荷泵2具有1:2的降压倍数，可以将20V2A的电压电流转换为10V4A的电压电流，以为两节电芯充电。
采用两个无线充电模块为电池充电，每个无线充电模块为电池充电的最大充电功率可以为40W，两个充电模块可以为电池提供80W的充电功率，相比于一个无线充电模块，能够提高充电速度。另外，如果电池的充电功率相同，采用两个线圈进行充电还能够分担热量，减小每个线圈的发热量。
两个有线充电模块可以包括两个过压保护电路和两个降压电路，这两个过压保护电路可以对后续的电路(如电荷泵1、电荷泵2)进行保护，避免电压过大造成电路损坏。第一个有线充电模块包括过压保护电路1和电荷泵1，第二个有线充电模块包括过压保护电路2和电荷泵2，电子设备可以从USB口接收电源提供设备输出的20V6A的充电电压和充电电流，USB口接收的20V6A的充电电压和充电电流可以分成两路进入过压保护电路1和过压保护电路2，过压保护电路1和过压保护电路2分别接收到20V3A的电压电流，经过电荷泵1和电荷泵2之后均变为10V6A的电压电流，从而为两节电芯充电。
可以理解的是，上述电源提供设备的输出电压和输出电流是可调节的，能够根据电池的充电需求进行调整。
采用两个有线充电模块为电池充电，每个有线充电模块可以做到40-60W的有线充电功率，两个有线充电模块可以做到80-120W的有线充电功率，从而能够提高有线充电速度。
有线充电模块除了上述两个有线充电模块之外，还包括普通充电模块，该普通充电模块能够兼容普通的适配器，使得电子设备具有很好的兼容性。
如果适配器为普通的适配器，则电子设备可以从USB口接收适配器输出的电压和电流，负载开关可以对后续电路进行保护，充电管理电路可以对适配器的输出电压和输出电流进行调整，使得调整之后的电压和电流能够与电池的充电需求相匹配。
如果电池包括两节电芯，则充电管理电路与电池之间还可以连接双向电荷泵。当通过充电管理电路为两节电芯充电时，该双向电荷泵工作在1:2模式，可以将充电管理电路的3-5V的电压倍压到6-10V给两节电芯充电。当通过两节电芯为用电系统供电时，该双向电荷泵工作在2:1模式，可以将两节电芯的6-10V的输出电压降压到3-5V给用电系统供电。
此外，本申请实施例还提供了另一种电子设备，如图6所示。相比于图5，图6所示的电子设备在无线接收电路后面可以并联多个电荷泵来实现降压的功能。例如，在无线接收电路1后面可以连接并联的电荷泵1和电荷泵3，电荷泵1和电荷泵3共同为对无线接收电路1的输出电压进行降压。由于电荷泵1和电荷泵3具有分流的作用，则流过每个电荷泵的电流将会减小，从而能够减小电荷泵的发热。
另外，本申请实施例并不局限于使用两个无线充电模块和两个有线充电模块为电池充 电，还可以使用更多个充电模块为电池充电。如图7所示，可以使用三个无线充电模块为电池充电。该电子设备还可以包括线圈3、无线接收电路3和电荷泵3，线圈3可以接收发射线圈发射的无线充电信号，无线接收电路3可以将无线充电信号转换为电流电压，电荷泵3可以对无线接收电路3的输出电压进行降压，从而为电池充电。
通过设置3个无线充电模块，可以将无线充电功率继续提升到60-90W，能够进一步提高充电速度。
图7仅是一种示例，电子设备也可以包括更多的充电模块，为了简洁，此处不再赘述。
本申请实施例可以将无线接收电路与降压电路均集成在同一无线充电芯片中，这样可以提高电子设备集成度，简化电子设备的实现。例如，可以对无线充电芯片的功能进行扩展，使其支持充电管理功能。
本申请实施例中提及的多节电芯指的是相互串联的多节电芯。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其他任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本发明实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者从一个计算机可读存储介质向另一个计算机可读存储介质传输，例如，所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(Digital Subscriber Line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如数字视频光盘(Digital Video Disc，DVD))、或者半导体介质(例如固态硬盘(Solid State Disk，SSD))等。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组 件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
当用于本申请中时，虽然术语“第一”、“第二”等可能会在本申请中使用以描述各设备，但这些设备不应受到这些术语的限制。这些术语仅用于将一个设备与另一个设备区别开。比如，在不改变描述的含义的情况下，第一设备可以叫做第二设备，并且同样地，第二设备可以叫做第一设备，只要所有出现的“第一设备”一致重命名并且所有出现的“第二设备”一致重命名即可。第一设备和第二设备都是设备，但可以不是相同的设备。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (20)

  1. 一种电子设备，其特征在于，包括：
    电池；
    多个无线充电模块，用于为所述电池充电，其中，所述多个无线充电模块分别包括无线接收电路；
    多个有线充电模块，用于根据电源提供设备的输出电压和输出电流，为所述电池充电；
    控制模块，用于控制所述多个无线充电模块中的至少一个和/或所述多个有线充电模块中的至少一个为所述电池充电。
  2. 根据权利要求1所述的电子设备，其特征在于，所述多个无线充电模块中的每个无线充电模块均包括第一电压转换电路，一个无线接收电路的输出端与至少一个所述第一电压转换电路的输入端连接，至少一个所述第一电压转换电路用于对所述一个无线接收电路的输出电压和输出电流进行电压转换，电压转换后的电压和电流用于为所述电池充电；
    所述至少一个所述第一电压转换电路为并联连接或串联连接。
  3. 根据权利要求2所述的电子设备，其特征在于，所述一个无线接收电路的输出端与两个所述第一电压转换电路的输入端连接，两个所述第一电压转换电路用于共同对所述一个无线接收电路的输出电压和输出电流进行电压转换。
  4. 根据权利要求3所述的电子设备，其特征在于，所述第一电压转换电路具有升压或降压的功能。
  5. 根据权利要求3所述的电子设备，其特征在于，所述第一电压转换电路为电荷泵，所述电荷泵具有固定的转换倍数。
  6. 根据权利要求1-5中任一项所述的电子设备，其特征在于，所述电子设备还包括多个接收线圈，其中，一个接收线圈与一个无线接收电路的输入端连接；
    所述接收线圈用于接收电磁信号，并将所述电磁信号转换成电压和电流输入至所述无线接收电路。
  7. 根据权利要求1-6中任一项所述的电子设备，其特征在于，所述多个有线充电模块中的每个有线充电模块均包括第二电压转换电路，所述第二电压转换电路用于对所述电源提供设备的输出电压和输出电流进行电压转换，电压转换后的电压和电流用于为所述电池充电。
  8. 根据权利要求2、3、7中任一项所述的电子设备，其特征在于，所述电池包括依次串联的N节电芯，所述第一电压转换电路与所述第二电压转换电路的输出电压与输入电压的电压比均为1:N，N为大于或等于2的整数。
  9. 根据权利要求2-8中任一项所述的电子设备，其特征在于，所述第一电压转换电路和所述第二电压转换电路为同一电路，所述有线充电模块和所述无线充电模块共用相同的电压转换电路。
  10. 根据权利要求1-9中任一项所述的电子设备，其特征在于，所述电子设备还包括充电管理电路，所述充电管理电路用于对所述电源提供设备的输出电压和输出电流进行调整，使得调整之后的电压和电流与所述电池的充电需求相匹配。
  11. 根据权利要求10所述的电子设备，其特征在于，所述电子设备还包括第三电压转换电路，所述第三电压转换电路的一端与所述电池连接，所述第三电压转换电路的另一端与电子设备的用电系统连接，
    电池包括依次串联的多节电芯，所述第三电压转换电路用于在供电过程中，对所述多节电芯的输出电压进行降压，降压后的电压用于为所述电子设备的用电系统供电。
  12. 根据权利要求11所述的电子设备，其特征在于，所述第三电压转换电路的一端与所述充电管理电路的输出端连接，所述第三电压转换电路还用于在充电过程中，对所述充电管理电路的输出电压进行升压，升压后的电压用于为所述多节电芯充电。
  13. 根据权利要求12所述的电子设备，其特征在于，所述第三电压转换电路为双向电荷泵。
  14. 根据权利要求12或13所述的电子设备，其特征在于，所述电池包括依次串联的M节电芯，所述第三电压转换电路在充电过程中的输出电压与输入电压的电压比为M:1，且所述第三电压转换电路在供电过程中的输出电压与输入电压的电压比为1:M，M为大于或等于2的整数。
  15. 根据权利要求10-14中任一项所述的电子设备，其特征在于，所述充电管理电路为降压buck电路。
  16. 根据权利要求10-14中任一项所述的电子设备，其特征在于，所述充电管理电路为升压boost电路。
  17. 根据权利要求10-16中任一项所述的电子设备，其特征在于，所述电子设备还包括充电接口和负载开关，所述负载开关的一端与所述充电接口连接，另一端与所述充电管理电路连接；
    所述充电接口用于接收所述电源提供设备的输出电压和输出电流；
    所述负载开关用于对所述电源提供设备的输出电压和输出电流进行调整，使得调整之后的电压不超过预设电压。
  18. 根据权利要求17中任一项所述的电子设备，其特征在于，所述负载开关还用于无线充电过程中进行电压保护。
  19. 根据权利要求7-14中任一项所述的电子设备，其特征在于，所述电子设备还包括充电接口和过压保护电路，所述过压保护电路的一端与所述充电接口连接，另一端与所述第二电压转换电路连接；
    所述充电接口用于接收所述电源提供设备的输出电压和输出电流；
    所述过压保护电路用于对所述电源提供设备的输出电压和输出电流进行调整，使得调整之后的电压不超过预设电压。
  20. 根据权利要求19中任一项所述的电子设备，其特征在于，所述过压保护电路包括多个。
PCT/CN2020/138040 2019-12-24 2020-12-21 电子设备 Ceased WO2021129574A1 (zh)

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