WO2023213316A1 - 一种无线充电装置及具有该无线充电装置的车辆 - Google Patents

一种无线充电装置及具有该无线充电装置的车辆 Download PDF

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Publication number
WO2023213316A1
WO2023213316A1 PCT/CN2023/092405 CN2023092405W WO2023213316A1 WO 2023213316 A1 WO2023213316 A1 WO 2023213316A1 CN 2023092405 W CN2023092405 W CN 2023092405W WO 2023213316 A1 WO2023213316 A1 WO 2023213316A1
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WIPO (PCT)
Prior art keywords
wireless charging
unit
controller
power transmitting
charging device
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/CN2023/092405
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English (en)
French (fr)
Inventor
王超
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.)
Changchun Jetty Automotive Parts Co Ltd
Original Assignee
Changchun Jetty Automotive Parts Co 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 Changchun Jetty Automotive Parts Co Ltd filed Critical Changchun Jetty Automotive Parts Co Ltd
Publication of WO2023213316A1 publication Critical patent/WO2023213316A1/zh
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
    • 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
    • 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
    • H02J50/40—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
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

Definitions

  • This article relates to the field of charging technology, and in particular to a wireless charging device and a vehicle equipped with the wireless charging device.
  • embodiments of this article provide a wireless charging device and a vehicle with the wireless charging device to solve the problem in the prior art that the wireless charging device is not compatible with multiple wireless fast charging solutions.
  • This article provides a wireless charging device, including a voltage boosting and bucking unit, a first controller, a first wireless charging driving unit, a second controller, a second wireless charging driving unit and a power transmitting coil;
  • the voltage boosting and bucking units are respectively connected to the first wireless charging driving unit and the second wireless charging driving unit to provide electric energy to the first wireless charging driving unit and the second wireless charging driving unit;
  • the first wireless charging driving unit and the second wireless charging driving unit are connected to the power transmitting coil to drive the power transmitting coil;
  • the first controller is respectively connected to the voltage boosting and bucking unit and the first wireless charging driving unit to control the voltage boosting and bucking unit and the first wireless charging driving unit;
  • the second controller is respectively connected to the voltage boosting and bucking unit and the second wireless charging driving unit to control the voltage boosting and bucking unit and the second wireless charging driving unit.
  • the first controller is connected to the second controller.
  • a coil switch unit is also included.
  • the first wireless charging drive unit and the second wireless charging drive unit are connected to the power transmitting coil through the coil switch unit.
  • the coil switch unit is also connected to the power transmitting coil.
  • the first controller and the second controller are configured to accept the control of the first controller or the second controller to connect or disconnect the first wireless charging driving unit or the second wireless charging driving unit from the power. Transmitter coil connections.
  • the first controller and the second controller are configured to select one or more coil switch units to convert the wireless charging output of the first wireless charging driving unit or the second wireless charging driving unit.
  • the charging power is transmitted to the power transmitting coil corresponding to the selected coil switching unit.
  • the first controller and the second controller are connected to the base of the first transistor of the same coil switch unit, and the first controller or the second controller inputs a high level
  • the first transistor is turned on, the collector of the first transistor is connected to the base of the second transistor, and the collector of the second transistor is connected to the gate of the first MOS transistor and the second MOS transistor respectively.
  • the sources of the first MOS tube and the second MOS tube are connected to the collector of the second transistor through parallel resistors, diodes and capacitors; the drain of the first MOS tube is connected to the One end of the power transmitting coil corresponding to the coil switch unit, the other end of the power transmitting coil is connected to an output end of the first wireless charging drive unit and the second wireless charging drive unit, and the drain of the second MOS tube is connected to The other output end of the first wireless charging driving unit and the second wireless charging driving unit.
  • the second wireless charging driving unit further includes a first sub-wireless charging driving unit and a second sub-wireless charging driving unit, and the second controller is connected to the first sub-wireless charging driving unit respectively.
  • the unit is connected to the second sub-wireless charging drive unit; an output end of the first sub-wireless charging drive unit and the second sub-wireless charging drive unit is combined as an output end of the second wireless charging drive unit, and the The other output terminal of the first sub-wireless charging driving unit and the second sub-wireless charging driving unit are combined as the other output terminal of the second wireless charging driving unit.
  • the embodiments of this article also provide a vehicle with the above wireless charging device.
  • wireless fast charging can be performed on mobile terminals of different brands by including multiple sets of wireless fast charging solutions to meet customers' wireless fast charging needs.
  • Figure 1 shows a schematic structural diagram of a wireless charging device according to an embodiment of this article
  • Figure 2 shows a schematic structural diagram of a wireless charging device according to an embodiment of this article
  • Figure 3 shows a schematic structural diagram of the power supply according to the embodiment of this article
  • FIG. 4 shows a schematic structural diagram of the EMC filter circuit according to the embodiment of this article
  • Figure 5 shows a circuit schematic diagram of the input detection circuit in the embodiment of this article
  • Figure 6 shows a circuit schematic diagram of the auxiliary power supply in the embodiment of this article
  • Figure 7 shows the circuit structure diagram of the buck-boost unit according to the embodiment of this article
  • Figure 8 shows a schematic structural diagram of the H-bridge resonant circuit according to the embodiment of this article
  • Figure 9 shows a schematic structural diagram of the first controller in the embodiment of this article.
  • Figure 10A shows a schematic structural diagram of a driving unit in Embodiment A of this article
  • Figure 10B shows a schematic structural diagram of the driving unit in Embodiment B of this article
  • Figure 11 shows the structure diagram of the second controller in the embodiment of this article
  • Figure 12 shows the structural diagram of the coil switch unit and power transmitting coil in the embodiment of this article
  • Figure 13 shows another structural schematic diagram of the wireless charging device according to the embodiment of this article.
  • Figure 14 shows a circuit schematic diagram of the temperature detection unit according to the embodiment of this article.
  • Figure 15 shows a circuit schematic diagram of the display unit according to the embodiment of this article.
  • Figure 16 shows a schematic circuit diagram of the heat dissipation unit according to the embodiment of this article.
  • Wireless charging device 101. Power supply; 102. Boost and buck unit; 103. First controller; 104. The first wireless charging drive unit; 105. Second controller; 106. The second wireless charging drive unit; 107. Power transmitting coil; 108. Equipment to be charged; 109. External power supply; 201. Power supply; 202. Boost and buck unit; 203. First controller; 204. H-bridge resonant circuit; 205. Second controller; 206. A drive unit; 207. B drive unit; 208. Power transmitting coil; 209. Equipment to be charged; 210. Coil switch unit; 211. First decoding circuit; 212. Second decoding circuit; 301. Filter circuit; 302. Input detection circuit; 303. Auxiliary power circuit; 1301. Second controller; 1302. Temperature detection unit; 1303. Display unit; 1304. Cooling unit.
  • FIG. 1 is a schematic structural diagram of a wireless charging device according to an embodiment of this article.
  • This figure describes the structure of a wireless charging device that combines two wireless fast charging solutions. It can be charged according to the device to be charged (such as mobile phones, tablets, etc. ) supports a wireless fast charging solution that uses a suitable wireless fast charging solution to quickly wirelessly charge the device to be charged through two controllers and a wireless charging drive unit.
  • the wireless charging device 100 specifically includes a power supply 101 and a voltage boosting and bucking unit 102 , the first controller 103, the first wireless charging driving unit 104, the second controller 105, the second wireless charging driving unit 106, the power transmitting coil 107, the device to be charged 108 and the external power supply 109;
  • the power supply 101 is connected to the external power supply 109 for receiving the charging power input by the external power supply 109 and converting it into the power required for the electrical components in the wireless charging device;
  • the voltage-boosting and bucking unit 102 is connected to the power supply 101 for receiving the charging power input from the power supply 101 and charging the voltage according to the first controller. 103 and the second controller 105 adjust the charging power output by the voltage-boosting and bucking unit 102;
  • the first wireless charging driving unit 104 is connected to the first controller 103, and the first wireless charging driving unit 104 is connected to the power transmitting coil 107, and is used to drive the power transmitting coil 107 under the control of the first controller 103;
  • the second wireless charging driving unit 106 is connected to the second controller 105, and the second wireless charging driving unit 106 is connected to the power transmitting coil 107 for driving the power transmitting coil 107 under the control of the second controller 105;
  • the first controller 103 and the second controller 105 are connected and used to enable the first wireless charging driving unit 104 or the second wireless charging driving unit 106 to drive power transmission according to the type of the device 108 to be charged wirelessly connected to the power transmitting coil 107
  • the coil 107 wirelessly charges the device 108 to be charged.
  • the first controller 103 and the second controller 105 learn the type of the device 108 to be charged through the QI protocol when the power transmitting coil 107 is wirelessly connected to the device 108, they can determine the type of the device 108 to be charged.
  • a controller 103 or a second controller 105 controls the corresponding wireless charging driving unit to drive the power transmitting coil 107 to complete fast charging of the device 108 to be charged.
  • the first controller 103 and the second controller 105 learn through the QI protocol that the device 108 to be charged is a type A mobile phone
  • the first controller 103 controls the power of the first wireless charging driving unit 104.
  • the transmitting coil 107 is driven, and the power transmitting coil 107 generates a changing magnetic field through changes in the alternating electric field.
  • the power receiving coil of the mobile phone senses the alternating magnetic field and generates a corresponding alternating current, thereby completing fast wireless charging of the mobile phone battery.
  • the second controller 105 controls the second wireless charging driving unit 106 to stop driving the power transmitting coil 107; when the first controller 103 and the second controller 105 learn through the QI protocol that the device 108 to be charged is a type B mobile phone, The second controller 105 controls the second wireless charging driving unit 106 to drive the power transmitting coil 107.
  • the power transmitting coil 107 generates a changing magnetic field through changes in the alternating electric field. After the power receiving coil of the mobile phone senses the alternating magnetic field, A corresponding alternating current is generated, thereby completing fast wireless charging of the mobile phone battery.
  • the first controller 103 controls the first wireless charging driving unit 104 to stop driving the power transmitting coil 107 .
  • the external power supply 109 can be a mains power supply, a battery, a vehicle battery, a generator, or other equipment.
  • the power supply 101 can convert alternating current or direct current into a current for charging the device 108 to be charged. After the power supply 101 outputs the charging power, The charging current is input to the device 108 to be charged through the power transmitting coil 107.
  • the first controller 103 or the second controller 105 controls the voltage-boosting unit 102 to increase or decrease the output power according to the target charging power of the device 108 to be charged. output power, thereby realizing automatic adjustment of the output power of the device to be charged 108, and avoiding problems such as low charging efficiency and long charging time caused by charging the device 108 to be charged with the output power of a preset gear in the prior art.
  • FIG. 2 shows a schematic structural diagram of a wireless charging device according to an embodiment of this article.
  • the second wireless charging driving unit includes two parallel sub-wireless
  • the charging drive unit (A drive unit, B drive unit) can realize special types of charging by the cooperation of two sub-wireless charging drive units.
  • the first wireless charging drive unit is an H-bridge resonant circuit. Through the H-bridge resonant circuit, the wireless fast charging requirements for another special type of equipment to be charged can also be realized.
  • the wireless charging device specifically includes Power supply 201, buck-boost unit 202, first controller 203, H-bridge resonant circuit 204, second controller 205, A drive unit 206, B drive unit 207, power transmitting coil 208, device to be charged 209, coil switch unit 210.
  • the power supply 201 is connected to the buck-boost unit 202.
  • the buck-boost unit 202 is connected to the H-bridge resonant circuit 204, the A drive unit 206, and the B drive unit 207 respectively.
  • the buck-boost unit 202 is also connected to the first controller 203 and the second control unit.
  • the first controller 203 is connected to the H bridge resonant circuit 204.
  • the second controller 205 is connected to the A drive unit 206 and the B drive unit 207 respectively.
  • the first controller 203 and the second controller 205 are connected to the H bridge.
  • the resonant circuit 204, the A drive unit 206, and the B drive unit 207 are all connected to the coil switch unit 210.
  • the first controller 203 and the second controller 205 are both connected to the coil switch unit 210.
  • the coil switch unit 210 is connected to the power transmitting coil 208.
  • the power transmitting coil 208 is connected to the first decoding circuit 211 and the second decoding circuit 212
  • the first decoding circuit 211 is connected to the first controller 203
  • the second decoding circuit 212 is connected to the second controller 205
  • the power transmitting coil 208 is connected to
  • the device to be charged 209 is connected wirelessly.
  • the first decoding circuit 211 and the second decoding circuit 212 can communicate with the device to be charged 209 through the power transmitting coil 208.
  • these decoding circuits can also be built into the first controller 203 and the second controller. Inside the controller 205, this figure is just an example. There is an independent decoding circuit between each controller and the power transmitting coil 208.
  • the A drive unit 206 and the B drive unit 207 are connected in parallel, and the output power of the two drive units can be combined and output to the coil switch unit 210 according to the control of the second controller 205, and Finally reaches the power transmitting coil 208.
  • the power transmitting coil 208 and the coil switch unit 210 may have multiple, for example, 3 power transmitting coils and a coil switch unit corresponding to each power transmitting coil.
  • the 3 power transmitting coils are connected to the first control unit.
  • multiple power transmitting coils 208 can be arranged overlappingly.
  • the first controller 203 and the second controller 205 can select one or more coil switch units 210 to switch the output of the H-bridge resonant circuit 204 or the A drive unit 206 or the B drive unit 207 to The wireless charging power is transmitted to the power transmitting coil 208 corresponding to the selected coil switch unit.
  • the first controller and the second controller when the second power transmitting coil senses the device to be charged, the first controller and the second controller output a low level in both the first coil switch unit and the third coil switch unit, indicating that these coils are not selected.
  • the power transmitting coil connected to the switching unit outputs charging power
  • the switching unit in the second coil outputs a high level, wherein the first controller and the The two controllers determine which controller is responsible for controlling the power transmitting coil to output charging power according to the type of equipment to be charged connected to the second power transmitting coil.
  • One of the first controller and the second controller outputs the charging power to the second coil switch unit.
  • the driving unit H bridge resonant circuit or A driving unit, B driving unit controlled by the first controller or the second controller outputs charging to the second power transmitting coil through the second coil switch unit. power.
  • Figure 3 is a schematic structural diagram of the power supply of the embodiment of this article.
  • the power supply further includes a filter circuit 301, an input detection circuit 302, and an auxiliary power supply circuit 303;
  • the filter circuit 301 filters the input current; the input detection circuit 302 detects the input current and sends it to the second controller. When the voltage or current of the input current exceeds the preset value, the second controller controls the input detection circuit 302 to turn off Turn on the input current to avoid damage to the internal electrical components of the wireless charging device; the auxiliary power circuit 303 generates wireless driving current and device operating current, where the voltage of the device operating current is 5V.
  • the filter circuit 301 can be referred to as shown in Figure 4.
  • Figure 4 shows a schematic structural diagram of the EMC filter circuit in the embodiment of this article.
  • EMC electromagnetic compatibility filter circuit
  • it is an electromagnetic compatibility filter circuit (EMC), which can filter out conducted interference, suppress and attenuate Noise signals generated by the outside world interfere with the wireless charging device, and at the same time suppress and attenuate the interference of the wireless charging device with the outside world.
  • EMC electromagnetic compatibility filter circuit
  • the input detection circuit 302 can be referred to Figure 5.
  • Figure 5 shows a circuit schematic diagram of the input detection circuit in the embodiment of this article. This figure describes the voltage division and control of the input power supply, where VBUS is provided to the entire wireless charging device.
  • the output terminal of the power supply, VBUS_ADC is the output terminal that outputs the detection voltage to the second controller.
  • the main control unit of the second controller can handle it in time to avoid damage to other electrical components.
  • the first controller may also replace the second controller's determination of the input power supply.
  • FIG. 6 is a schematic circuit diagram of the auxiliary power supply in the embodiment of this article. In this figure It describes the conversion of DC power into the power transmitting coil driving voltage and the two outputs that supply current to other electrical components. Among them, VBUS is the power output terminal connected to the input detection circuit. After processing the electrical components as in the attached figure, it is formed The COIL_SEL_PR terminal and the BUCK_5V terminal are provided.
  • the COIL_SEL_PR terminal is the output terminal used to drive the power transmitting coil for wireless charging
  • the BUCK_5V terminal is used to provide power to, for example, the first controller, the second controller, the H-bridge resonant circuit, and the A drive unit. , B drive unit and other electrical components power supply output end.
  • FIG. 7 shows the circuit structure diagram of the buck-boost unit in the embodiment of this article.
  • the output terminal VRAIL of the buck-boost unit is an H-bridge resonant circuit and an A drive unit.
  • B drive unit supplies power, in which the PIN3 pin of the chip receives the control signal (PWM) from the first controller or the second controller, and adjusts the full-bridge circuit according to the control signal to increase or decrease the output voltage. If the output voltage needs to be higher than the input voltage (according to the control of the first controller or the second controller), the full bridge composed of MOS tubes Q5, Q6, Q8, and Q9 quickly becomes a boost circuit, that is, Q6 is always on.
  • PWM control signal
  • Q9 is normally off, Q5 is normally off, and Q8 performs switching control, so the voltage can be boosted; if the output voltage needs to be smaller than the input voltage, Then the full bridge composed of MOS tubes Q5, Q6, Q8, and Q9 quickly becomes a buck circuit, that is, Q6 and Q9 are complementarily turned on, Q5 is normally on, and Q8 is normally off, so a set of buck circuits is formed, so the voltage can be reduced. .
  • FIG. 8 is a schematic structural diagram of the H-bridge resonant circuit in the embodiment of this article. This figure describes the circuit structure of the H-bridge resonant circuit. This circuit receives the output VRAIL voltage of the buck-boost unit and passes through the capacitors C37, C38, After filtering by C39, the alternating driving voltages AC1 and AC2 are output through the H-bridge resonant circuit composed of MOS tubes Q12, Q15, Q10 and Q14. The gate of MOS tube Q12 is connected to the DRVH1 terminal of the first controller.
  • the gate of MOS tube Q15 is connected to the DRVL1 terminal of the first controller, the gate of MOS tube Q10 is connected to the DRVH2 terminal of the first controller, and the gate of MOS tube Q14 is connected to the DRVL2 terminal of the first controller. control to turn on or off.
  • the SW1 end and the SW2 end are the connection points of the output ends of the A drive unit and the B drive unit, so that the H-bridge resonant circuit, the A drive unit and the B drive unit can all have the same output end, which is in phase with the coil switch unit and the power transmitting coil.
  • FIG. 9 is a schematic structural diagram of the first controller in the embodiment of this article.
  • the PIN47 pin of the chip is the signal output by the first controller to the buck-boost unit. control signal (PWM), so that the buck-boost unit can adjust the output voltage VRAIL according to this signal;
  • the PIN15 and PIN16 pins of the chip are pins that communicate with the second controller, and can be determined through mutual communication with the second controller Which controller controls the corresponding drive unit to drive the coil switch unit and power transmitting coil;
  • the PIN43 and PIN40 pins of the chip correspond to the gates of MOS tubes Q12 and Q15 of the H-bridge resonant circuit respectively, outputting the DRVH1 control signal and DRVL1 control signal,
  • the PIN35 and PIN38 pins of the chip correspond to the gates of MOS tubes Q10 and Q14 of the H-bridge resonant circuit respectively, and output the DRVH2 control signal and DRVL2 control signal;
  • Figure 10A shows a schematic structural diagram of the driving unit of Embodiment A of this article.
  • Figure 10B shows a schematic structural diagram of the driving unit of Embodiment B of this article.
  • the circuit structures of the A driving unit and the B driving unit are described in Figures 10A and 10B.
  • the voltage VRAIL output by the buck-boost unit is received through PIN20, PIN28 pins and PIN1, PIN27, and the upper side input voltage is filtered through capacitors C106, C107, C108 and C109, and the upper side input voltage is filtered through capacitors C130, C131, C132 and C133 filters the input voltage on the lower side;
  • the PIN2 pin of the chip is connected to the clock pin of the second controller, the PIN3 pin is connected to the data pin of the second controller, and the PIN4 and PIN17 pins are connected to the control of the second controller.
  • PWM pulse width modulation signal
  • PWM1 high-level control signal
  • PWM2 low-level control signal
  • PWM1 the control signal
  • the voltage VRAIL output by the buck-boost unit is received through PIN20, PIN28 pins and PIN1, PIN27, and the upper side input voltage is filtered through capacitors C101, C102, C103 and C104, and the upper side input voltage is filtered through capacitors C125, C126, C127 and C128 filters the input voltage on the lower side;
  • the PIN2 pin of the chip is connected to the clock pin of the second controller, the PIN3 pin is connected to the data pin of the second controller, and the PIN4 and PIN17 pins are connected to the control of the second controller.
  • PWM pulse width modulation signal
  • PWM1 high-level control signal
  • PWM2 low-level control signal
  • PWM1 the control signal sent to the PIN4 pin and the PIN17 pin
  • PWM1 the control signal sent to the PIN4 pin and the PIN17 pin
  • FIG 11 is a structural diagram of the second controller in the embodiment of this article.
  • This figure describes the chip pin definition of the second controller, in which the chip PIN20 pin is connected to the PIN1 pin of the buck-boost unit.
  • the enable pin is used to control the operation of the buck-boost unit;
  • the chip PIN22 and PIN23 pins are connected to the A drive unit and the B drive unit respectively, and are used to output control information (PWM1, PWM2) to the A drive unit and the B drive unit, thereby Adjust the output power of the A drive unit and the B drive unit;
  • the chip PIN9, PIN26, and PIN27 pins are connected to the control terminals of the three coil switch units respectively to select which power transmitting coil outputs power;
  • the chip PIN31 and PIN32 pins pass
  • the serial port is connected to the PIN15 and PIN16 pins of the first controller.
  • the first controller and the second controller can exchange information through the serial port; the chip PIN24 and PIN25 pins are used by the second controller to control the A drive unit and the B drive unit independently.
  • the selection pins for working or co-working are respectively connected to the PIN21 pin of the A drive unit and the PIN21 pin of the B drive unit.
  • Figure 12 shows the structural diagram of the coil switch unit and the power transmitting coil in the embodiment of this article.
  • the three coil switch units and the corresponding three power transmitting coils are respectively controlled by the first controller and the second controller.
  • the CTL_COIL_1 control signal output by the PIN25 pin of the first controller and the MCU_SEL_COIL_A_DO control signal output by the PIN27 pin of the second controller respectively pass through the diodes D19 and D21 and the same resistor R95, and are connected to the base of the transistor Q27 of the same coil switching unit.
  • the emitter of the transistor Q27 is grounded, and the collector is connected to the base of the transistor Q22.
  • Either input of the first controller or the second controller is high-level to conduct the transistor Q27, and the collector of the transistor Q22 is connected to the MOS tube Q20 respectively.
  • the gate of MOS tube Q25, the source of MOS tube Q20 and MOS tube Q25 are connected to the collector of transistor Q22 through the parallel resistor R80, diode D15 (TVS) and capacitor C75, and the emitter of transistor Q22 is connected to the auxiliary power supply.
  • the COIL_SEL_PR terminal is connected to obtain the driving current; the drain of the MOS tube Q20 is connected to one end of the power transmitting coil corresponding to the coil switch unit, and the other end of the power transmitting coil is connected to the H-bridge resonant circuit and a common output of the A drive unit and the B drive unit. terminal (such as AC1 terminal), the drain of MOS tube Q25 is connected to the H-bridge
  • the resonant circuit is the other output terminal common to A drive unit and B drive unit (for example, AC2 terminal).
  • the first controller and the second controller determine that one of the power transmitting coils is used to drive the device to be charged wirelessly, for example, when the first controller controls the H-bridge resonant circuit to drive the power transmitting coil
  • the first controller The coil switch unit outputs a high-level CTL_COIL_1 control signal.
  • the second controller outputs a low-level MCU_SEL_COIL_A_DO control signal to the coil switch unit.
  • Transistor Q27 and transistor Q22 are all turned on, resistor R85 is energized, and the auxiliary power output
  • the COIL_SEL_PR driving current can drive the power transmitting coil.
  • the H-bridge resonant circuit outputs an alternating current at the AC1 end and AC2 end at the output end according to the PWM control signal of the first controller.
  • This alternating current flows through the power transmitting coil, causing the power to be transmitted.
  • the coil forms a changing magnetic field, so that the power receiving coil of the device to be charged can form a charging current.
  • the first controller and the second controller can determine which power transmitting coil radiates energy to the device to be charged, and can also determine whether the first controller
  • the second controller turns on the coil switch unit and outputs power to the power transmitting coil through the corresponding drive unit.
  • the setting position of the power transmitting coil can be different, and can be set according to the position of the power receiving coil of various devices to be charged, for example, arranged vertically, which can correspond to the different vertical positions of the coils of various devices to be charged. , or arranged horizontally, so that multiple devices to be charged can be placed side by side horizontally to wirelessly charge multiple devices to be charged at the same time.
  • FIG. 13 is another schematic structural diagram of the wireless charging device according to the embodiment of this article.
  • the first controller and the second controller may be equal, that is, all the functions that the second controller is responsible for except controlling the second wireless charging driving unit can be completed by the first controller.
  • the wireless charging device may include a second controller 1301, a temperature detection unit 1302, a display unit 1303, and a heat dissipation unit 1304;
  • the temperature detection unit 1302, the display unit 1303, and the heat dissipation unit 1304 are respectively connected to the second controller 1301.
  • the second controller 1301 controls the operation of the heat dissipation unit 1304 according to the detection result of the temperature detection unit 1302.
  • the heat dissipation unit 1304 is a fan and controls the fan. Turn to lower the temperature of the charging unit.
  • the second controller 1301 can also transmit the target charging power of the device to be charged or the operating temperature detected by the temperature detection unit 1302 to the display unit 1303 for display, or when the display unit 1303 cannot display rich information, only according to the LED indication The light shows whether the currently connected device to be charged has been fast charged or has been charged.
  • the temperature detection unit 1302 may be a temperature-sensitive resistor, built inside or near the power transmitting coil, to detect the operating temperature of the wireless charging device.
  • the heat dissipation unit 1304 can also be built near the heating components inside the wireless charging device to achieve the purpose of dissipating heat and ensuring the safety of the device.
  • FIG 14 is a schematic circuit diagram of the temperature detection unit in the embodiment of this article. This figure describes the circuit structure of the temperature detection unit.
  • the temperature detection unit mainly includes a temperature-sensitive resistor (NTC), which can be placed on the charging device to generate heat. of electricity Near the air components, such as the power transmitting coil, the voltage boosting and bucking unit, the first controller, the first wireless charging drive unit, the second controller, the second wireless charging drive unit, etc., there can also be multiple thermosensitive resistors, placed separately.
  • the detection results of the temperature detection unit are transmitted to the pins of the second controller near different heating electrical components.
  • FIG 15 is a schematic circuit diagram of the display unit according to the embodiment of this article. This figure describes the circuit structure of the display unit.
  • the display unit is two LED lights.
  • the display unit displays different colors through the control of the second controller. Flashing.
  • FIG 16 is a schematic circuit diagram of the heat dissipation unit in the embodiment of this article. This figure describes the circuit structure of the heat dissipation unit.
  • the heat dissipation unit is controlled by the pin of the second controller to rotate the fan J5, thereby achieving the purpose of charging the charging device. heat dissipation purpose.
  • the embodiments of this article also provide a vehicle with the above wireless charging device.
  • the disclosed systems, devices and methods can be implemented in other ways.
  • the device embodiments described above are only illustrative.
  • the division of units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or integrated. to another system, or some features can be ignored, or not implemented.
  • the coupling or direct coupling or communication connection between each other shown or discussed may be an indirect coupling or communication connection through some interfaces, devices or units, or may be electrical, mechanical or other forms of connection.
  • a unit described as a separate component may or may not be physically separate.
  • a component shown as a unit may or may not be a physical unit, that is, it may be located in one place, or it may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the embodiments of this article.
  • each functional unit in each embodiment of this article can be integrated into one processing unit, each unit can exist physically alone, or two or more units can be integrated into one unit.
  • the above integrated units can be implemented in the form of hardware or software functional units.

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Abstract

本文涉及充电技术领域，尤其涉及一种无线充电装置及具有该无线充电装置的车辆。用于解决现有技术中无线充电方案较多无法通用的问题。本文提供的无线充电装置中升降压单向第一无线充电驱动单元以及第二无线充电驱动单元提供电能；第一无线充电驱动单元以及第二无线充电驱动单元驱动功率发射线圈；第一控制器分别控制所述升降压单元、第一无线充电驱动单元；第二控制器分别控制所述升降压单元、第二无线充电驱动单元。通过本文的实施例可以兼容多种无线快充方案。

Description

一种无线充电装置及具有该无线充电装置的车辆
相关申请
本申请要求于2022年05月06日递交的申请号为202210488120.5的中国发明专利申请的优先权，并引用上述专利申请公开的全部内容作为本申请的一部分。
技术领域
本文涉及充电技术领域，尤其涉及一种无线充电装置及具有该无线充电装置的车辆。
背景技术
随着移动终端的普及，越来越多的人需要随身携带各式各样的移动终端，例如手机、平板电脑等设备，这些移动终端无时无刻的需要电能补充，即充电，在现有技术中无线充电面临一个问题，那就是各种品牌移动终端的快速无线充电结构都不同，如果无线充电装置不能支持该品牌的无线充电结构，则无法向该移动终端进行快速无线充电。
如何实现无线充电装置尽可能多的兼容多种品牌或无线快充解决方案是现有技术亟需解决的问题。
发明内容
为解决现有技术中的问题，本文实施例提供了一种无线充电装置及具有该无线充电装置的车辆，用于解决现有技术中无线充电装置不能兼容多种无线快充解决方案的问题。
本文提供了一种无线充电装置，包括升降压单元、第一控制器、第一无线充电驱动单元、第二控制器、第二无线充电驱动单元和功率发射线圈；
所述升降压单元分别与第一无线充电驱动单元以及第二无线充电驱动单元连接，以向所述第一无线充电驱动单元以及第二无线充电驱动单元提供电能；
所述第一无线充电驱动单元以及所述第二无线充电驱动单元与所述功率发射线圈连接，以驱动所述功率发射线圈；
所述第一控制器分别连接于所述升降压单元、第一无线充电驱动单元，以控制所述升降压单元、第一无线充电驱动单元；
所述第二控制器分别连接于所述升降压单元、第二无线充电驱动单元，以控制所述升降压单元、第二无线充电驱动单元。
可选地，所述第一控制器与所述第二控制器连接。
作为本文实施例的一个方面，还包括线圈开关单元，所述第一无线充电驱动单元和第二无线充电驱动单元通过所述线圈开关单元与功率发射线圈连接，所述线圈开关单元还连接于所述第一控制器和第二控制器，以接受所述第一控制器或第二控制器的控制导通或者断开所述第一无线充电驱动单元或第二无线充电驱动单元与所述功率发射线圈的连接。
作为本文实施例的一个方面，所述第一控制器和第二控制器被配置为选择一个或者多个线圈开关单元，将所述第一无线充电驱动单元或第二无线充电驱动单元输出的无线充电功率传送给与所选择的线圈开关单元对应的功率发射线圈。
作为本文实施例的一个方面，所述第一控制器和第二控制器连接同一个线圈开关单元的第一三极管的基极，所述第一控制器或第二控制器输入高电平导通第一三极管，该第一三极管的集电极连接第二三极管的基极，所述第二三极管的集电极分别连接第一MOS管以及第二MOS管的栅极，所述第一MOS管以及第二MOS管的源极通过并联的电阻、二极管以及电容连接到所述第二三极管的集电极；所述第一MOS管的漏极连接与所述线圈开关单元对应的功率发射线圈的一端，该功率发射线圈的另一端连接所述第一无线充电驱动单元和第二无线充电驱动单元的一个输出端，所述第二MOS管的漏极连接于所述第一无线充电驱动单元和第二无线充电驱动单元的另一个输出端。
作为本文实施例的一个方面，所述第二无线充电驱动单元进一步包括第一子无线充电驱动单元和第二子无线充电驱动单元，所述第二控制器分别与所述第一子无线充电驱动单元和第二子无线充电驱动单元连接；所述第一子无线充电驱动单元和第二子无线充电驱动单元的一个输出端合并后作为所述第二无线充电驱动单元的一个输出端，所述第一子无线充电驱动单元和第二子无线充电驱动单元的另一个输出端合并后作为所述第二无线充电驱动单元的另一个输出端。
本文实施例还提供了一种具有上述无线充电装置的车辆。
利用本文实施例，通过包括多套无线快充解决方案可以对不同品牌的移动终端进行无线快充，满足客户的无线快充需求。
附图说明
为了更清楚地说明本文实施例或现有技术中的技术方案，下面将对实施例或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本文的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1所示为本文实施例一种无线充电装置的结构示意图；
图2所示为本文实施例一种无线充电装置的结构示意图；
图3所示为本文实施例电源的结构示意图；
图4所示为本文实施例EMC滤波电路的结构示意图；
图5所示为本文实施例输入检测电路的电路示意图；
图6所示为本文实施例辅助电源的电路示意图；
图7所示为本文实施例升降压单元的电路结构图；
图8所示为本文实施例H桥谐振电路的结构示意图；
图9所示为本文实施例第一控制器的结构示意图；
图10A所示为本文实施例A驱动单元的结构示意图；
图10B所示为本文实施例B驱动单元的结构示意图；
图11所示为本文实施例第二控制器的结构图；
图12所示为本文实施例线圈开关单元以及功率发射线圈的结构图；
图13所示为本文实施例无线充电装置的另一结构示意图；
图14所示为本文实施例温度检测单元的电路示意图；
图15所示为本文实施例显示单元的电路示意图；
图16所示为本文实施例散热单元的电路示意图。
【附图标记说明】
100、无线充电装置；
101、电源；
102、升降压单元；
103、第一控制器；
104、第一无线充电驱动单元；
105、第二控制器；
106、第二无线充电驱动单元；
107、功率发射线圈；
108、待充电设备；
109、外部电源；
201、电源；
202、升降压单元；
203、第一控制器；
204、H桥谐振电路；
205、第二控制器；
206、A驱动单元；
207、B驱动单元；
208、功率发射线圈；
209、待充电设备；
210、线圈开关单元；
211、第一解码电路；
212、第二解码电路；
301、滤波电路；
302、输入检测电路；
303、辅助电源电路；
1301、第二控制器；
1302、温度检测单元；
1303、显示单元；
1304、散热单元。
具体实施方式
下面将结合本文实施例中的附图，对本文实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本文一部分实施例，而不是全部的实施例。基于本文中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本文保护的范围。
如图1所示为本文实施例一种无线充电装置的结构示意图，在本图中描述了结合两种无线快充方案的无线充电装置的结构，可以根据待充电设备(例如手机、平板电脑等)所支持的无线快充方案，通过两个控制器以及无线充电驱动单元实现采用合适的无线快充方案对待充电设备进行快速无线充电，该无线充电装置100具体包括电源101、升降压单元102、第一控制器103、第一无线充电驱动单元104、第二控制器105、第二无线充电驱动单元106、功率发射线圈107、待充电设备108和外部电源109；
电源101连接外部电源109，用于接收外部电源109输入的充电功率，并将其转换为无线充电装置中电气元件所需的电源；
升降压单元102连接电源101，用于接收电源101输入的充电功率，并根据第一控制器 103和第二控制器105调节升降压单元102输出的充电功率；
第一无线充电驱动单元104与第一控制器103相连接，第一无线充电驱动单元104与功率发射线圈107连接，用于在第一控制器103的控制下驱动功率发射线圈107；
第二无线充电驱动单元106与第二控制器105相连接，第二无线充电驱动单元106与功率发射线圈107连接，用于在第二控制器105的控制下驱动功率发射线圈107；
第一控制器103和第二控制器105连接，用于根据与功率发射线圈107无线连接的待充电设备108的类型启用第一无线充电驱动单元104或者第二无线充电驱动单元106来驱动功率发射线圈107，对待充电设备108进行无线充电。
作为本文的一个实施例，当第一控制器103和第二控制器105通过功率发射线圈107与待充电设备108无线连接时的QI协议获知该待充电设备108的类型后，即可确定由第一控制器103或者第二控制器105来控制相应的无线充电驱动单元来对功率发射线圈107进行驱动，从而完成对待充电设备108的快速充电。
在本步骤中，例如当第一控制器103和第二控制器105通过QI协议获知待充电设备108为A类型的手机时，则由第一控制器103控制第一无线充电驱动单元104对功率发射线圈107进行驱动，功率发射线圈107通过交变电场的变化，产生变化的磁场，手机的功率接收线圈感应到交变磁场后产生相应的交变电流，从而完成对手机电池的快速无线充电，此时，第二控制器105控制第二无线充电驱动单元106停止驱动功率发射线圈107；当第一控制器103和第二控制器105通过QI协议获知待充电设备108为B类型的手机时，则由第二控制器105控制第二无线充电驱动单元106对功率发射线圈107进行驱动，功率发射线圈107通过交变电场的变化，产生变化的磁场，手机的功率接收线圈感应到交变磁场后产生相应的交变电流，从而完成对手机电池的快速无线充电，此时，第一控制器103控制第一无线充电驱动单元104停止驱动功率发射线圈107。
作为本文的一个实施例，外部电源109可以为市电、电池、车载电池或者发电机等设备，电源101可以将交流电或者直流电转换为待充电设备108充电的电流，在电源101输出充电功率后，充电电流通过功率发射线圈107输入到待充电设备108，在这个过程中，第一控制器103或第二控制器105根据待充电设备108的目标充电功率控制升降压单元102提高输出功率或者降低输出功率，从而实现对待充电设备108输出功率的自动调节，避免现有技术中以预设挡位的输出功率对待充电设备108进行充电，导致的充电效率低、时间长等问题。
如图2所示为本文实施例一种无线充电装置的结构示意图，在本图的实施例中描述了无线充电装置的具体结构图，其中第二无线充电驱动单元包括了两个并联的子无线充电驱动单元(A驱动单元、B驱动单元)，通过两个子无线充电驱动单元的配合可以实现特殊类型待充 电设备的无线快速充电需求，第一无线充电驱动单元为H桥谐振电路，通过该H桥谐振电路也可以实现对另一种特殊类型待充电设备的无线快速充电需求，该无线充电装置具体包括电源201、升降压单元202、第一控制器203、H桥谐振电路204、第二控制器205、A驱动单元206、B驱动单元207、功率发射线圈208、待充电设备209、线圈开关单元210、第一解码电路211和第二解码电路212；
电源201与升降压单元202连接，升降压单元202分别与H桥谐振电路204、A驱动单元206、B驱动单元207连接，升降压单元202还与第一控制器203以及第二控制器205连接，第一控制器203与H桥谐振电路204连接，第二控制器205分别与A驱动单元206、B驱动单元207连接，第一控制器203和第二控制器205连接，H桥谐振电路204以及A驱动单元206、B驱动单元207均与线圈开关单元210连接，第一控制器203和第二控制器205均与线圈开关单元210连接，线圈开关单元210与功率发射线圈208连接，功率发射线圈208与第一解码电路211和第二解码电路212连接，第一解码电路211与第一控制器203连接，第二解码电路212与第二控制器205连接，功率发射线圈208与待充电设备209无线连接。
在本文的一个实施例中，第一解码电路211和第二解码电路212可以通过功率发射线圈208与待充电设备209进行通信，当然这些解码电路也可以内置于第一控制器203和第二控制器205内部，本图只是一个示例，每个控制器与功率发射线圈208之间均具有一个独立的解码电路。
在本文的一个实施例中，A驱动单元206、B驱动单元207为并联的连接方式，可以根据第二控制器205的控制将两个驱动单元的输出功率合并后输出到线圈开关单元210，并最终到达功率发射线圈208。
在本文的一个实施例中，功率发射线圈208、线圈开关单元210可以具有多个，例如3个功率发射线圈以及与每个功率发射线圈对应的线圈开关单元，3个功率发射线圈与第一控制器203之间具有一个第一解码电路211，3个功率发射线圈与第二控制器205之间具有一个第二解码电路212。
其中，多个功率发射线圈208可以重叠设置。
在本文的一个实施例中，第一控制器203和第二控制器205可以选择一个或者多个线圈开关单元210，从而将H桥谐振电路204，或A驱动单元206、B驱动单元207输出的无线充电功率传送给与所选择的线圈开关单元对应的功率发射线圈208。
在本步骤中，当第二功率发射线圈感应到待充电设备时，第一控制器和第二控制器在第一线圈开关单元和第三线圈开关单元均输出低电平，表示不选择这些线圈开关单元连接的功率发射线圈输出充电功率，而在第二线圈开关单元输出一个高电平，其中，第一控制器和第 二控制器根据与第二功率发射线圈连接的待充电设备的类型决定由哪个控制器负责控制功率发射线圈输出充电功率，第一控制器与第二控制器中的一个向第二线圈开关单元输出高电平，同时，受控于该第一控制器或第二控制器的驱动单元(H桥谐振电路或者A驱动单元、B驱动单元)通过第二线圈开关单元向第二功率发射线圈输出充电功率。
在本文的一个实施例中，如图3所示为本文实施例电源的结构示意图，电源进一步包括滤波电路301、输入检测电路302、辅助电源电路303；
其中滤波电路301对输入的电流进行滤波；输入检测电路302检测输入电流，并发送给第二控制器，当输入电流的电压或者电流超过预设值时，第二控制器控制输入检测电路302断开输入电流，以避免对无线充电装置内部电气元件造成损害；辅助电源电路303产生无线驱动电流和器件工作电流，其中器件工作电流的电压为5V。
其中，滤波电路301可以参照图4所示，图4所示为本文实施例EMC滤波电路的结构示意图，在本例中为电磁兼容性滤波电路(EMC)，可以滤除传导干扰，抑制和衰减外界产生的噪声信号对无线充电装置的干扰，同时抑制和衰减无线充电装置对外界的干扰。
输入检测电路302可以参照图5所示，图5所示为本文实施例输入检测电路的电路示意图，在本图中描述了对输入电源的分压和控制，其中VBUS为向整个无线充电装置提供电源的输出端，VBUS_ADC为向第二控制器输出检测电压的输出端，用于当输入电压异常时，第二控制器主控单元可以及时处理以避免造成其他电气元件损坏。在其他实施例中，还可以由第一控制器替换第二控制器对输入电源的判断。
在本文的实施例中，在上述输入检测电路之后，还具有辅助电源，辅助电源的输出连接无线充电装置的其他部件，如图6所示为本文实施例辅助电源的电路示意图，在本图中描述了将直流电源变换为功率发射线圈驱动电压以及对其他电气元件供电电流的两个输出，其中，VBUS为连接输入检测电路的功率输出端，通过如附图中的电气元件的处理后，形成了COIL_SEL_PR端以及BUCK_5V端，其中，COIL_SEL_PR端为用于驱动功率发射线圈进行无线充电的输出端，BUCK_5V端为用于向例如第一控制器、第二控制器、H桥谐振电路、A驱动单元、B驱动单元等电气元件供电的输出端。
如图7所示为本文实施例升降压单元的电路结构图，在本图中描述了升降压单元的电路结构，该升降压单元的输出端VRAIL为H桥谐振电路、A驱动单元、B驱动单元供电，其中芯片的PIN3管脚接收第一控制器或第二控制器的控制信号(PWM)，根据控制信号调节全桥电路进行输出电压的升降压。若输出电压需要高于输入电压(根据第一控制器或第二控制器的控制)，则由MOS管Q5、Q6、Q8、Q9组成的全桥迅速变成boost电路，也就是Q6常通，Q9常关，Q5常关，Q8进行开关控制，因此可以进行升压；若输出电压需要小于输入电压， 则由MOS管Q5、Q6、Q8、Q9组成的全桥迅速变成buck电路，也就是Q6和Q9互补开通，Q5常通，Q8常关，所以形成了一组buck电路，因此可以进行降压。
如图8所示为本文实施例H桥谐振电路的结构示意图，在本图中描述了H桥谐振电路的电路结构，该电路接收升降压单元的输出VRAIL电压，通过由电容C37、C38、C39的滤波后，再通过由MOS管Q12、Q15、Q10和Q14组成的H桥谐振电路输出交变的驱动电压AC1和AC2，其中，MOS管Q12的栅极连接第一控制器的DRVH1端，MOS管Q15的栅极连接第一控制器的DRVL1端，MOS管Q10的栅极连接第一控制器的DRVH2端，MOS管Q14的栅极连接第一控制器的DRVL2端，受到第一控制器的控制导通或者关断。其中，在SW1端以及SW2端为A驱动单元和B驱动单元输出端的连接点，从而H桥谐振电路、A驱动单元和B驱动单元都可以具有相同的输出端与线圈开关单元和功率发射线圈相连接，在本实施例中，AC1连接到线圈开关单元，AC2连接到功率发射线圈。
如图9所示为本文实施例第一控制器的结构示意图，在本图中描述了第一控制器的芯片结构，其中，芯片的PIN47管脚为第一控制器向升降压单元输出的控制信号(PWM)，从而升降压单元可以根据该信号调节输出电压VRAIL；芯片的PIN15、PIN16管脚为与第二控制器相互通信的管脚，通过与第二控制器的相互通信可以确定由哪个控制器控制相应的驱动单元对线圈开关单元和功率发射线圈进行驱动；芯片的PIN43、PIN40管脚分别对应H桥谐振电路的MOS管Q12和Q15的栅极，输出DRVH1控制信号和DRVL1控制信号，芯片的PIN35、PIN38管脚分别对应H桥谐振电路的MOS管Q10和Q14的栅极，输出DRVH2控制信号和DRVL2控制信号；本图中还包括由电容C96、C97、C94、C91和电阻R109、R104、R105构成的第一解码电路，用于对通过功率发射线圈获得的待充电设备的信息进行解码；该芯片的PIN25、PIN26、PIN27管脚用于向3个线圈开关单元输出选择信号CTL_COIL_1、CTL_COIL_2、CTL_COIL_3。
如图10A所示为本文实施例A驱动单元的结构示意图，图10B所示为本文实施例B驱动单元的结构示意图，在图10A和图10B中描述了A驱动单元和B驱动单元电路结构，在A驱动单元中通过PIN20、PIN28管脚以及PIN1、PIN27接收升降压单元输出的电压VRAIL，通过电容C106、C107、C108和C109对上侧输入电压进行滤波，通过电容C130、C131、C132和C133对下侧输入电压进行滤波；芯片PIN2管脚连接第二控制器的时钟管脚，PIN3管脚连接第二控制器的数据管脚，PIN4管脚和PIN17管脚连接第二控制器的控制信号(PWM)，当PIN17管脚接收到高电平的控制信号时(PWM1)该A驱动单元内部的上部MOS管导通，芯片PIN14、PIN15、PIN16、PIN30管脚构成的SW1输出高电平，当PIN4管脚接收到低电平的控制信号时(PWM2)该A驱动单元内部的下部MOS管导通，芯片PIN5、PIN6、PIN7、PIN29管脚构成的SW2输出高电平，控制信号PWM即为控制内部MOS管的占空比，传送给PIN4管脚和PIN17管 脚的控制信号不同(PWM1、PWM2)，分别对应与第二控制器的两个控制信号输出管脚。
在B驱动单元中通过PIN20、PIN28管脚以及PIN1、PIN27接收升降压单元输出的电压VRAIL，通过电容C101、C102、C103和C104对上侧输入电压进行滤波，通过电容C125、C126、C127和C128对下侧输入电压进行滤波；芯片PIN2管脚连接第二控制器的时钟管脚，PIN3管脚连接第二控制器的数据管脚，PIN4管脚和PIN17管脚连接第二控制器的控制信号(PWM)，当PIN17管脚接收到高电平的控制信号时(PWM1)该A驱动单元内部的上部MOS管导通，芯片PIN14、PIN15、PIN16、PIN30管脚构成的SW1输出高电平，当PIN4管脚接收到低电平的控制信号时(PWM2)该A驱动单元内部的下部MOS管导通，芯片PIN5、PIN6、PIN7、PIN29管脚构成的SW2输出高电平，控制信号PWM即为内部MOS管的开关频率，传送给PIN4管脚和PIN17管脚的控制信号不同(PWM1、PWM2)，分别对应与第二控制器的两个控制信号输出管脚。
如图11所示为本文实施例第二控制器的结构图，在本图中描述了第二控制器的芯片管脚定义，其中，芯片PIN20管脚与升降压单元的PIN1管脚连接，为控制升降压单元工作的使能管脚；芯片PIN22、PIN23管脚分别与A驱动单元以及B驱动单元连接，用于向A驱动单元以及B驱动单元输出控制信息(PWM1、PWM2)，从而调节A驱动单元以及B驱动单元的输出功率；芯片PIN9、PIN26、PIN27管脚分别与3个线圈开关单元的控制端连接，用来选择向哪个功率发射线圈输出功率；芯片PIN31、PIN32管脚通过串口与第一控制器的PIN15、PIN16管脚连接，第一控制器和第二控制器通过串口可以进行信息交互；芯片PIN24和PIN25管脚为第二控制器控制A驱动单元以及B驱动单元单独工作还是共同工作的选择管脚，分别连接到A驱动单元的PIN21管脚，B驱动单元的PIN21管脚。
如图12所示为本文实施例线圈开关单元以及功率发射线圈的结构图，在本图中描述了3个线圈开关单元以及对应的3个功率发射线圈分别受到第一控制器和第二控制器控制，并且与H桥谐振电路功率输出端AC1和AC2连接的示意图，其中以最左侧的线圈开关单元和功率发射线圈为例进行说明。第一控制器PIN25管脚输出的CTL_COIL_1控制信号，和第二控制器PIN27管脚输出的MCU_SEL_COIL_A_DO控制信号分别通过二极管D19和D21以及同一个电阻R95后，连接同一个线圈开关单元的三极管Q27的基极，该三极管Q27的发射极接地，集电极连接三极管Q22的基极，第一控制器或第二控制器的任一个输入高电平导通三极管Q27，三极管Q22的集电极分别连接MOS管Q20以及MOS管Q25的栅极，MOS管Q20以及MOS管Q25的源极通过并联的电阻R80、二极管D15(TVS)以及电容连C75接到三极管Q22的集电极，三极管Q22的发射极与辅助电源的COIL_SEL_PR端连接得到驱动电流；MOS管Q20的漏极连接与线圈开关单元对应的功率发射线圈的一端，该功率发射线圈的另一端连接H桥谐振电路和A驱动单元、B驱动单元共同的一个输出端(例如AC1端)，MOS管Q25的漏极连接于H桥 谐振电路和A驱动单元、B驱动单元共同的另一个输出端(例如AC2端)。
当第一控制器与第二控制器确定由其中一个驱动功率发射线圈对待充电设备进行无线快速充电时，例如，由第一控制器控制H桥谐振电路驱动功率发射线圈时，第一控制器向线圈开关单元输出高电平的CTL_COIL_1控制信号，此时，第二控制器向线圈开关单元输出低电平的MCU_SEL_COIL_A_DO控制信号，三极管Q27和三极管Q22全部导通，电阻R85得电，辅助电源输出的COIL_SEL_PR驱动电流可以驱动功率发射线圈，H桥谐振电路根据第一控制器的PWM控制信号在输出端输出在AC1端和AC2端交变的电流，该交变电流流过功率发射线圈，令功率发射线圈形成变化的磁场，从而待充电设备的功率接收线圈才能够形成充电电流。
不同的功率发射线圈通过与待充电设备进行基于QI协议的通信后，第一控制器和第二控制器可以确定由哪个功率发射线圈向待充电设备辐射能量，并且也能确定由第一控制器还是第二控制器导通线圈开关单元，并通过相应的驱动单元对功率发射线圈进行功率输出。
其中，功率发射线圈的设置位置可以不同，可以针对各种待充电设备的功率接收线圈的位置而设置，例如竖直排列，这样可以对应多种待充电设备线圈在竖直方向上位置不同的情况，或者横向排列，这样可以对应横向并排放置多个待充电设备，以同时对多个待充电设备进行无线充电。
如图13所示为本文实施例无线充电装置的另一结构示意图，在本图中描述了与第二控制器(或者第一控制器)连接的其他辅助性电气元件，在本文的所有实施例中，第一控制器和第二控制器可以是平等的，即，所有由第二控制器负责的除了控制第二无线充电驱动单元以外的功能均可由第一控制器完成，在本实施例中的无线充电装置可以包括第二控制器1301、温度检测单元1302、显示单元1303、散热单元1304；
温度检测单元1302、显示单元1303、散热单元1304分别与第二控制器1301连接，第二控制器1301根据温度检测单元1302的检测结果控制散热单元1304工作，例如散热单元1304为风扇，控制该风扇转动，从而降低充电装置的温度。其中，第二控制器1301还可以根据待充电设备的目标充电功率或者温度检测单元1302检测得到的工作温度传送给显示单元1303进行显示，或者当显示单元1303不能显示丰富信息时，仅根据LED指示灯来显示当前连接的待充电设备是否已经进行了快速充电或者已经充电完成。
温度检测单元1302可以为温敏电阻，内置于功率发射线圈内部或者附近，用来检测无线充电装置的工作温度。散热单元1304也可以内置于无线充电装置内部的发热部件附近，从而达到散热、保证装置安全的目的。
如图14所示为本文实施例温度检测单元的电路示意图，在本图中描述了温度检测单元的电路结构，其中该温度检测单元主要包括了温敏电阻(NTC)，可以放置在充电装置发热的电 气元件附近，例如功率发射线圈、升降压单元、第一控制器、第一无线充电驱动单元、第二控制器、第二无线充电驱动单元等，温敏电阻还可以为多个，分别放置于不同的发热电气元件附近，该温度检测单元的检测结果传送给第二控制器的管脚。
如图15所示为本文实施例显示单元的电路示意图，在本图中描述了显示单元电路结构，其中，显示单元为两个LED灯，通过第二控制器的控制显示单元呈现不同的颜色或者闪烁。
如图16所示为本文实施例散热单元的电路示意图，在本图中描述了散热单元电路结构，其中，散热单元通过第二控制器的管脚控制使得风扇J5转动，从而达到对充电装置进行散热的目的。
本文实施例还提供了一种具有上述无线充电装置的车辆。
通过上述实施例，通过将支持不同待充电设备的无线快充方案整合在一起，可以支持多种待充电设备无线快充。
应理解，在本文的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本文实施例的实施过程构成任何限定。
还应理解，在本文实施例中，术语“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系。例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
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、计算机软件或者二者的结合来实现，为了清楚地说明硬件和软件的可互换性，在上述说明中已经按照功能一般性地描述了各示例的组成及步骤。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文的范围。
所属领域的技术人员可以清楚地了解到，为了描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本文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，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。另外，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，也可以是电的，机械的或其它的形式连接。
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文实施例方案的目的。
另外，在本文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，也可以是两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用软件功能单元的形式实现。
本文中应用了具体实施例对本文的原理及实施方式进行了阐述，以上实施例的说明只是用于帮助理解本文的方法及其核心思想；同时，对于本领域的一般技术人员，依据本文的思想，在具体实施方式及应用范围上均会有改变之处，综上所述，本说明书内容不应理解为对本文的限制。

Claims (22)

  1. 一种无线充电装置，其特征在于，包括升降压单元、第一控制器、第一无线充电驱动单元、第二控制器、第二无线充电驱动单元和功率发射线圈；
    所述升降压单元分别与第一无线充电驱动单元以及第二无线充电驱动单元连接；
    所述第一无线充电驱动单元以及所述第二无线充电驱动单元与所述功率发射线圈连接，以驱动所述功率发射线圈；
    所述第一控制器分别连接于所述升降压单元、第一无线充电驱动单元，以控制所述升降压单元、第一无线充电驱动单元；
    所述第二控制器分别连接于所述升降压单元、第二无线充电驱动单元，以控制所述升降压单元、第二无线充电驱动单元。
  2. 根据权利要求1所述的无线充电装置，其特征在于，所述第一控制器与所述第二控制器连接。
  3. 根据权利要求1所述的无线充电装置，其特征在于，还包括线圈开关单元，所述第一无线充电驱动单元和第二无线充电驱动单元通过所述线圈开关单元与所述功率发射线圈连接，所述线圈开关单元还连接于所述第一控制器和第二控制器，以接受所述第一控制器或第二控制器的控制，导通或者断开所述第一无线充电驱动单元或第二无线充电驱动单元与所述功率发射线圈的连接。
  4. 根据权利要求3所述的无线充电装置，其特征在于，包括多个所述功率发射线圈，每个所述功率发射线圈对应各自的线圈开关单元。
  5. 根据权利要求4所述的无线充电装置，其特征在于，所述第一控制器和第二控制器被配置为选择一个或者多个线圈开关单元，将所述第一无线充电驱动单元或第二无线充电驱动单元输出的无线充电功率传送给与所选择的线圈开关单元对应的功率发射线圈。
  6. 根据权利要求5所述的无线充电装置，其特征在于，所述第一控制器和第二控制器连接同一个线圈开关单元的第一三极管的基极，所述第一控制器或第二控制器输入高电平导通第一三极管，该第一三极管的集电极连接第二三极管的基极，所述第二三极管的集电极分别连接第一MOS管以及第二MOS管的栅极，所述第一MOS管以及第二MOS管的源极通过并联的电阻、二极管以及电容连接到所述第二三极管的集电极；所述第一MOS管的漏极连接与所述线圈开关单元对应的功率发射线圈的一端，该功率发射线圈的另一端连接所述第一无线充电驱动单元和第二无线充电驱动单元的一个输出端，所述第二MOS管的漏极连接于所述第一无线充电驱动单元和第二无线充电驱动单元的另一个输出端。
  7. 根据权利要求4所述的无线充电装置，其特征在于，多个所述功率发射线圈位于不同位置，以提供更大的无线充电面积。
  8. 根据权利要求1所述的无线充电装置，其特征在于，还包括解码电路，所述解码电路连接于所述功率发射线圈与所述第一控制器和所述第二控制器之间。
  9. 根据权利要求4所述的无线充电装置，其特征在于，包括第一解码电路和第二解码电路，第一解码电路连接于所有功率发射线圈与第一控制器之间，第二解码电路连接于所有功率发射线圈与第二控制器之间。
  10. 根据权利要求1所述的无线充电装置，其特征在于，所述第二无线充电驱动单元进一步包括第一子无线充电驱动单元和第二子无线充电驱动单元，所述第二控制器分别与所述第一子无线充电驱动单元和第二子无线充电驱动单元连接；所述第一子无线充电驱动单元和第二子无线充电驱动单元的一个输出端合并后作为所述第二无线充电驱动单元的一个输出端，所述第一子无线充电驱动单元和第二子无线充电驱动单元的另一个输出端合并后作为所述第二无线充电驱动单元的另一个输出端。
  11. 根据权利要求1所述的无线充电装置，其特征在于，所述第一无线充电驱动单元为H桥谐振电路，所述H桥谐振电路包括两个输出端，分别与第二无线充电驱动单元的两个对应的输出端连接所述功率发射线圈以及线圈开关单元。
  12. 根据权利要求6所述的无线充电装置，其特征在于，还包括电源，所述电源与所述升降压单元连接，以向所述升降压单元提供电能；所述电源包括滤波电路，用于滤除干扰。
  13. 根据权利要求12所述的无线充电装置，其特征在于，所述滤波电路为电磁兼容性滤波电路。
  14. 根据权利要求12所述的无线充电装置，其特征在于，所述电源还包括输入检测电路，所述输入检测电路与所述滤波电路连接，用于检测输入电流，并发送给第二控制器。
  15. 根据权利要求12所述的无线充电装置，其特征在于，所述电源还包括辅助电源电路，用于产生无线驱动电流和器件工作电流。
  16. 根据权利要求15所述的无线充电装置，其特征在于，所述辅助电源电路输出的无线驱动电流输送至每个线圈开关单元的第二三极管的发射极。
  17. 根据权利要求1所述的无线充电装置，其特征在于，还包括温度检测单元，所述温度检测单元与所述第二控制器相连接，所述温度检测单元被设置于所述无线充电装置内，用于检测所述无线充电装置的温度。
  18. 根据权利要求17所述的无线充电装置，其特征在于，所述温度检测单元被设置于功率发射线圈附近。
  19. 根据权利要求1所述的无线充电装置，其特征在于，还包括显示单元，所述显示单元与所述第二控制器相连接，用于显示无线充电功率。
  20. 根据权利要求1所述的无线充电装置，其特征在于，还包括散热单元，所述散热单元与所述第二控制器相连接，所述散热单元被设置于所述无线充电装置内，用于根据所述第二控制器的控制对所述无线充电装置进行散热。
  21. 根据权利要求20所述的无线充电装置，其特征在于，所述散热单元被设置于所述功率发射线圈附近。
  22. 一种具有上述权利要求1-21任意一项无线充电装置的车辆。
PCT/CN2023/092405 2022-05-06 2023-05-06 一种无线充电装置及具有该无线充电装置的车辆 Ceased WO2023213316A1 (zh)

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