CN109193888B - Wireless charging power supply system with Type-c interface and charging method - Google Patents
Wireless charging power supply system with Type-c interface and charging method Download PDFInfo
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- CN109193888B CN109193888B CN201811239037.4A CN201811239037A CN109193888B CN 109193888 B CN109193888 B CN 109193888B CN 201811239037 A CN201811239037 A CN 201811239037A CN 109193888 B CN109193888 B CN 109193888B
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- H02J7/025—
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- H02J5/005—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/10—Circuit arrangements or systems for wireless supply or distribution of electric power using inductive coupling
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/70—Circuit arrangements or systems for wireless supply or distribution of electric power involving the reduction of electric, magnetic or electromagnetic leakage fields
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J50/00—Circuit arrangements or systems for wireless supply or distribution of electric power
- H02J50/80—Circuit arrangements or systems for wireless supply or distribution of electric power involving the exchange of data, concerning supply or distribution of electric power, between transmitting devices and receiving devices
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Abstract
The invention discloses a wireless charging solution of a Type-c interface, wherein a wireless charging power supply system comprises an adapter and a wireless charging transmitter which does not integrate a main control chip, the adapter comprises a charging controller which supports a quick charging protocol and a wireless charging protocol at the same time, and a first Type-c interface, and the wireless charging transmitter comprises a second Type-c interface, a full-bridge driving circuit and a transmitting coil; the control end of the full-bridge driving circuit is connected with a high-speed data pin on the second Type-c interface, a functional port of the charging controller is correspondingly connected with a pin on the first Type-c interface, and the full-bridge driving circuit is used for realizing driving of the transmitting coil to carry out wireless charging according to the level of the pin of the first Type-c interface. Compared with the prior art, the wireless charging transmitter does not need a wireless protocol chip to control transmission.
Description
Technical Field
The invention relates to the technical field of charging power supplies, in particular to a wireless charging power supply system with a Type-c interface and a charging method.
Background
In recent years, the development of wireless charging technology enables charging to get rid of the limitation of a circuit, so that electric appliances and a power supply are completely separated, a charging connector is not required to be inserted during charging, the use is very convenient, and the safety of the wireless charging technology also shows better advantages than that of a traditional charger, so that the wireless charging technology is rapidly developed, but the wired charging is still a mainstream charging mode due to the absolute advantage of charging efficiency, so that the wireless charging is mainly carried out in a wired charging mode in the foreseeable future, and the wireless charging is auxiliary, and two modes coexist.
The USB Power Delivery technology in wired charging is developed very rapidly, and becomes a standard protocol of wired charging in electronic products, a PD charger product becomes a standard of the electronic products, and meanwhile, wireless charging product control needs to support a wireless charging protocol, so that the wireless charging product and the wired charging product basically need MCU to support, and the production cost is increased.
Disclosure of Invention
The invention provides a solution, which is characterized in that a PD charger product is improved to support a wireless charging standard, and then a simple charging front-end circuit is matched to realize that the standard PD charger product supports wireless charging, and the technical scheme is as follows:
the wireless charging power supply system comprises an adapter and a wireless charging transmitter, wherein the adapter comprises a charging controller and a first Type-c interface, the wireless charging transmitter comprises a second Type-c interface and a transmitting coil L, and a pin on the first Type-c interface is correspondingly connected with a pin on the second Type-c interface through a Type-c cable; the charging controller supports a quick charging protocol and a wireless charging protocol at the same time, and the wireless charging transmitter does not integrate a main control chip, wherein the main control chip is a processor supporting the wireless charging protocol; the wireless charging transmitter further comprises a full-bridge driving circuit, a first debugging resistor R1 and a second debugging resistor R2, wherein one end of the first debugging resistor R1 is connected with a configuration channel pin of the second Type-c interface, the other end of the first debugging resistor R1 is grounded and is used for assisting the charging controller to detect the condition that load equipment is connected to the adapter, and the configuration channel pin comprises a first configuration pin CC1 or a second configuration pin CC2; one end of a second debugging resistor R2 is connected with a positive traditional data pin D+ and/or a negative traditional data pin D-of the second Type-c interface, and the other end of the second debugging resistor R2 is grounded and used for assisting the charging controller to detect the condition that the wireless charging transmitter is connected with the adapter on the premise that the charging controller confirms that the load equipment is connected with the adapter; the control end of the full-bridge driving circuit is correspondingly connected with a first preset data pin of the second Type-c interface, the port of the charging controller is correspondingly connected with a pin on the first Type-c interface, and the charging controller is used for adjusting and outputting corresponding configuration voltage to the second Type-c interface according to the level state of the relevant pin of the first Type-c interface after the full-bridge driving circuit is electrically connected with the adapter through the second Type-c interface, so that the full-bridge driving circuit drives the transmitting coil to perform wireless charging; wherein the first preset data pin includes: the high-speed differential receiving data pins RX+/RX-, the high-speed differential sending data pins TX+/TX-, or other idle data pins on the second Type-c interface.
Further, the pins of the first Type-c interface and the pins of the second Type-c interface are pins with the same name and are used for transmitting signals of the same Type.
Further, the full-bridge driving circuit includes a first NMOS transistor NM1, a second NMOS transistor NM2, a third NMOS transistor NM3, a fourth NMOS transistor NM4, and a capacitor C1; the drain electrode of the first NMOS tube NM1 and the drain electrode of the third NMOS tube NM3 are connected with a power supply pin VBUS of the second Type-c interface, and the source electrode of the second NMOS tube NM2 and the source electrode of the fourth NMOS tube NM4 are grounded; the source electrode of the first NMOS tube NM1 is connected with the drain electrode of the second NMOS tube NM2, and the common connection node of the first NMOS tube NM1 is connected with one end of the transmitting coil L; the source electrode of the third NMOS tube NM3 is connected with the drain electrode of the fourth NMOS tube NM4, and the common connection node of the third NMOS tube NM3 is connected with the other end of the transmitting coil L through a capacitor C1; the grid electrode of the first NMOS tube NM1, the grid electrode of the second NMOS tube NM2, the grid electrode of the third NMOS tube NM3 and the grid electrode of the fourth NMOS tube NM4 are respectively connected with four first preset data pins of the second Type-c interface and used as the control end of the full-bridge driving circuit; the common connection node of the capacitor C1 and the transmitting coil L is connected with a second preset data pin of the second Type-C interface and is used as a resonance capacitor of the wireless charging power supply system; the second preset data pins comprise other idle data pins except the first preset data pins on the second Type-c interface.
Further, the positive legacy data pin d+ or the negative legacy data pin D-of the second Type-c interface may be further connected to a corresponding pin of a small control chip, so as to communicate with the charging controller, and identify a Type of a load device connected to the adapter according to a communication result, where the small control chip is integrated in the wireless charging transmitter and is a small single chip that does not support a wireless charging protocol.
Further, the charging controller comprises a fast charging strategy management unit, a wireless charging control unit and an ADC conversion unit; the wireless charging control unit is configured to configure an output power supply of the first Type-c interface according to a wireless charging protocol when the charging controller detects that the level of a first configuration pin CC1 or the level of a second configuration pin CC2 of the first Type-c interface is a first voltage threshold and the positive legacy data pin d+ and/or the negative legacy data pin D-of the first Type-c interface is a preset low level, so that the first Type-c interface outputs a power supply required by the wireless device; the first voltage threshold is in a voltage range of the configuration channel pin when the Type-c interface specified by the fast charging protocol searches for the equipment; the preset low level is a voltage value where the positive traditional data pin D+ and/or the negative traditional data pin D-are located when the Type-c interface searches the wireless charging transmitter; the fast charging policy management unit is configured to configure an output power supply of the first Type-c interface according to a fast charging protocol when the charging controller detects that only a level of a first configuration pin CC1 or a second configuration pin CC2 of the first Type-c interface is the first voltage threshold, so that the first Type-c interface outputs a power supply required by a fast charging device; the ADC conversion unit is used for collecting analog quantity to be detected, and comprises sampling and receiving a rapid charging protocol signal and a wireless charging protocol signal on the second preset data pin, demodulating the rapid charging protocol signal and the wireless charging protocol signal, and transmitting the rapid charging protocol signal and the wireless charging protocol signal to the wireless charging control unit and the rapid charging strategy management unit for processing.
Further, the fast charge policy management unit supports, but is not limited to, the USB PD fast charge protocol.
A charging method based on the wireless charging power supply system, comprising the following steps: the wireless charging power supply system is powered on for resetting, and then the wireless charging transmitter is powered through the Type-c cable; according to the state of the level signal of the first configuration pin CC1 or the level signal of the second configuration pin CC2 of the first Type-c interface, the charging controller judges whether the load device and the adapter are in an electrical connection relation, if so, the load device is judged to be the wireless charging transmitter through the level signal of the positive traditional data pin d+ and/or the level signal of the negative traditional data pin D-of the first Type-c interface, when the load device is judged to be the wireless charging transmitter, the wireless charging control unit configures an output power supply of the first Type-c interface according to a wireless charging protocol, and when the load device is not the wireless charging transmitter, the fast charging strategy management unit configures the output power supply of the first Type-c interface according to a fast charging protocol.
Further, when the charging controller still detects that the level signal of the first configuration pin CC1 or the second configuration pin CC2 of the first Type-c interface is changed from the second voltage threshold to the first voltage threshold, the adapter and the load device establish an electrical connection relationship; when the charging controller still detects that the level signal of the first configuration pin CC1 or the second configuration pin CC2 of the first Type-c interface is changed from the second voltage threshold to the first voltage threshold, and the level signal of the positive legacy data pin d+ and/or the negative legacy data pin D-of the first Type-c interface is changed from a preset high level to the preset low level, the load device determines that the wireless charging transmitter; the second voltage threshold is in a voltage range of the configuration channel pin specified by the fast charging protocol when the Type-c interface does not search for the equipment; the preset high level is a voltage value of the positive legacy data pin d+ or the negative legacy data pin D-when the Type-c interface does not find the device.
Further, the adapter may be disconnected from the wireless charging transmitter prior to powering up.
Further, the fast-fill protocol includes, but is not limited to, a USB PD fast-fill protocol.
Compared with the existing PD charger and wireless charging products, the method and the device have the advantages that a protocol processing main control chip in wireless charging equipment is omitted, so that the design difficulty of the wireless products is reduced, and meanwhile, the cost of using a wireless charging technology by a terminal user is reduced.
Drawings
Fig. 1 is a schematic diagram of a wireless charging power system with a Type-c interface according to an embodiment of the present invention;
fig. 2 is a flowchart of a charging method based on the wireless charging power supply system according to an embodiment of the present invention.
Detailed Description
The following describes the technical solution in the embodiment of the present invention in detail with reference to the drawings in the embodiment of the present invention. It should be understood that the following detailed description is merely illustrative of the invention, and is not intended to limit the invention.
A wireless charging power supply system based on a Type-C interface is shown in fig. 1, and comprises an adapter integrating fast charging protocol firmware and wireless charging protocol firmware, a wireless charging transmitter not integrating a main control chip and a Type-C cable. The adapter comprises a charging controller, a first Type-c interface and a power converter, wherein the charging controller simultaneously supports a quick charging protocol and a wireless charging protocol, and the adapter adopts the Type-c interface as a standard quick charging interface; the wireless charging transmitter comprises a second Type-c interface, a full-bridge Type driving circuit and a transmitting coil L, and the wireless charging transmitter adopts the Type-c interface as a standard charging interface. It should be noted that, the main control chip is a processor supporting a wireless charging protocol. Compared with the prior art, the wireless charging transmitter omits a wireless protocol processor, the adapter is designed as a power adapter compatible with standard quick charging protocols and wireless charging protocols, and the wireless charging transmitter and the adapter are connected through a type-c interface, so that a wireless charging power system is constructed. As shown in FIG. 1, the first Type-C interface and the second Type-C interface are both used as device connection interfaces in the wireless charging power supply system, and are the Type-C interfaces of the USB standard. The Type-c interface serves as a recognized interface, and in the prior art, the Type-c interface includes a power supply pin VBUS, a ground pin GND, a high-speed data pin, a configuration pin, a conventional interface pin D+/D-, a high-speed differential transmit data pin TX+/TX-, and a high-speed differential receive data pin RX+/RX-.
As shown in FIG. 1, the pins on the first Type-C interface and the pins on the second Type-C interface are correspondingly connected through connecting wires, the pins of the first Type-C interface and the pins of the second Type-C interface are all named identically and are used for transmitting signals of the same Type, namely, in the first Type-C interface and the second Type-C interface, the pins based on the same transmission signal Type can be electrically connected through Type-C cables, and the Type-C cables are linking devices of the adapter and the wireless charging transmitter. The first Type-c interface is arranged in the adapter, the second Type-c interface is arranged in the wireless charging transmitter, and the adapter is connected with the wireless charging transmitter through the Type-c cable. Specifically, as shown in fig. 1, the mode that the pins on the first Type-c interface and the pins on the second Type-c interface are correspondingly connected through the Type-c cable includes: the positive legacy data pin D+ of the first Type-c interface is connected with the positive legacy data pin D+ of the second Type-c interface, and the negative legacy data pin D-of the first Type-c interface is connected with the negative legacy data pin D-of the second Type-c interface; the first configuration pin CC1 of the first Type-c interface is connected with the first configuration pin CC1 of the second Type-c interface; the second configuration pin CC2 of the first Type-c interface is connected with the second configuration pin CC2 of the second Type-c interface. In the embodiment of the invention, a positive high-speed differential receiving data pin RX1+ on the first Type-c interface is connected with a positive high-speed differential transmitting data pin TX1+ on the second Type-c interface, a positive high-speed differential receiving data pin RX2+ on the first Type-c interface is connected with a positive high-speed differential transmitting data pin TX2+ on the second Type-c interface, a negative high-speed differential receiving data pin RX 1-on the first Type-c interface is connected with a negative high-speed differential transmitting data pin TX 1-on the second Type-c interface, and a negative high-speed differential receiving data pin RX 2-on the first Type-c interface is connected with a negative high-speed differential transmitting data pin TX 2-on the second Type-c interface. In addition, it should be noted that, the power supply pin VBUS on the first Type-c interface is connected with the power supply pin VBUS on the second Type-c interface, and the high-speed differential transmission data pin TX on the first Type-c interface is connected with the high-speed differential reception data pin RX on the second Type-c interface.
Specifically, the charging controller may include an adapter main control chip, where the built-in fast charging protocol firmware includes PD protocol firmware or other charging protocol firmware, so as to make appropriate configuration for power conversion and the adapter according to the content of the protocol packet, so that the charged device can charge according to the specific voltage or current required by the charged device; meanwhile, the adapter main control chip is also internally provided with a wireless charging protocol firmware which is used for processing data packets related to a wireless charging protocol, and making proper configuration for power supply conversion and the adapter according to the content of the protocol packets, such as increasing or decreasing voltage and increasing or decreasing current to meet the requirement of the charging electric quantity of a wireless receiving end, so that the application range of the adapter is enlarged.
As shown in fig. 1, the wireless charging transmitter further includes a first debug resistor R1 and a second debug resistor R2. One end of the first debugging resistor R1 is connected with a configuration channel pin of the second Type-c interface, and the other end of the first debugging resistor R1 is grounded and used for assisting the charging controller to detect the condition that load equipment is connected to the adapter; wherein the configuration channel pins include a first configuration pin CC1 and a second configuration pin CC2. Specifically, the circuit in which the first debug resistor R1 is located may be used as a load monitoring circuit of the adapter, and when the adapter detects that the resistor is connected, it may determine that the load device is connected. As shown in fig. 1, in the embodiment of the present invention, one end of the second debug resistor R2 is simultaneously connected to the shorting end of the positive legacy data pin d+ and the negative legacy data pin D-of the second Type-c interface, and the other end of the second debug resistor R2 is grounded. And under the condition that the charging controller detects that the load equipment is connected with the adapter, the charging controller is assisted to detect that the wireless charging transmitter is connected with the adapter by detecting whether a positive traditional data pin D+ or a negative traditional data pin D-is connected with the second debugging resistor R2, namely judging whether the load equipment is the wireless charging transmitter, and if yes, judging that the wireless charging transmitter is connected.
As an embodiment of the present invention, as shown in fig. 1, a control end G1 of the full-bridge driving circuit is connected to a positive high-speed differential transmission data pin TX1+ on the second Type-c interface, a control end G2 of the full-bridge driving circuit is connected to a negative high-speed differential transmission data pin TX 1-on the second Type-c interface, a control end G3 of the full-bridge driving circuit is connected to a positive high-speed differential transmission data pin TX2+ on the second Type-c interface, and a control end G4 of the full-bridge driving circuit is connected to a negative high-speed differential transmission data pin TX 2-on the second Type-c interface. It should be noted that, the pins on the second Type-c interface connected to the control end of the full-bridge driving circuit further include other unused data pins. The foregoing circuit structure means that the control end of the full-bridge driving circuit is correspondingly connected with a first preset data pin of the second Type-c interface, the port of the charging controller is correspondingly connected with a relevant pin on the first Type-c interface, and the charging controller is used for obtaining the state of a load device electrically connected with the adapter according to the level state of the corresponding pin on the first Type-c interface after the full-bridge driving circuit is electrically connected with the adapter through the second Type-c interface, further converting the power supply into a negotiated direct current power supply through the power converter, outputting a corresponding configuration voltage to the second Type-c interface, and then controlling the full-bridge driving circuit to drive the transmitting coil L to perform wireless charging. The first preset data pins comprise high-speed differential sending data pins TX+/TX-, high-speed differential receiving data pins RX+/RX-or other idle data pins on the second Type-c interface.
As shown in fig. 1, the full-bridge driving circuit performs electromagnetic induction operation on the transmitting coil L through on-off of the MOS tube, and transmits energy to the receiving end through a magnetic field to charge equipment of the receiving end. The full-bridge driving circuit comprises a first NMOS tube NM1, a second NMOS tube NM2, a third NMOS tube NM3 and a fourth NMOS tube NM4, wherein the drain electrode of the first NMOS tube NM1 and the drain electrode of the third NMOS tube NM3 are connected with a power supply pin VBUS on the second Type-c interface, and the source electrode of the second NMOS tube NM2 and the source electrode of the fourth NMOS tube NM4 are grounded; the source electrode of the first NMOS tube NM1 is connected with the drain electrode of the second NMOS tube NM2, the connection point of the first NMOS tube NM1 is connected with one end of the transmitting coil L, and a power supply pin VBUS on the second Type-c interface is pushed and pulled to be output to the transmitting coil L; the source electrode of the first NMOS tube NM1 is connected with the drain electrode of the second NMOS tube NM2, the common connection node of the first NMOS tube NM1 is connected with one end of the transmitting coil L, and a power supply pin VBUS on the second Type-c interface is outputted to the transmitting coil L in a push-pull manner; the first NMOS tube NM1, the second NMOS tube NM2, the third NMOS tube NM3, and the fourth NMOS tube NM4 form a full-bridge rectification output circuit, and through the alternate conduction, the configured dc power voltage transmitted from the power supply pin VBUS on the second Type-c interface is converted into an ac power voltage, so that the transmitting coil performs electromagnetic induction, thereby transmitting electric energy. The source electrode of the third NMOS tube NM3 is connected with the drain electrode of the fourth NMOS tube NM4, and the common connection node of the third NMOS tube NM3 is connected with the other end of the transmitting coil L through a capacitor C1. The grid electrode of the first NMOS tube NM1, the grid electrode of the second NMOS tube NM2, the grid electrode of the third NMOS tube NM3 and the grid electrode of the fourth NMOS tube NM4 are respectively connected with four high-speed data transmission pins on the second Type-c interface and are respectively used as control ends G1, G2, G3 and G4 of the full-bridge driving circuit. And a common connection node of the capacitor C1 and the transmitting coil L is connected with a second preset data pin of the second Type-C interface and is used as a resonance capacitor of the wireless charging power supply system, so that a wireless charging signal with a specific frequency is provided for the wireless charging power supply system. Wherein the second preset data pin is a high-speed data receiving pin RX1+ in the embodiment of the present invention, but in reality, the second preset data pin includes other idle data pins on the second Type-c interface except the first preset data pin.
As an embodiment of the present invention, the positive legacy data pin d+ or the negative legacy data pin D-of the second Type-c interface may be further connected to a corresponding pin of the small control chip, and the communication process with the charging signal of the adapter is completed by sending a level signal to the charging controller and then receiving a response signal of the charging controller, and then the Type of the load device connected to the adapter is identified according to the communication result. The small control chip is integrated in the wireless charging transmitter and is a small single chip microcomputer which does not support a wireless charging protocol, and because the small single chip microcomputer is a chip with low power consumption and low cost, the development cost can be reduced by adopting the chip design, and the accuracy of identifying the load equipment connected to the adapter is improved.
As an embodiment of the present invention, as shown in fig. 1, the charge controller includes a fast charge policy management unit, a wireless charge control unit, a constant voltage/constant current control unit, an ADC conversion unit, and a safety monitoring unit. And the wireless charging control unit is internally provided with wireless charging protocol firmware and is used for configuring power supply conversion and output voltage/current of the adapter according to a wireless charging protocol when the charging controller detects that the level of a configuration channel pin of the first Type-c interface is a first voltage threshold, namely, in the embodiment of the invention, the level of a first configuration pin CC1 or a second configuration pin CC2 is the first voltage threshold, and the short-circuit end of a positive traditional data pin D+ and a negative traditional data pin D-of the first Type-c interface is a preset low level, namely, the output current capacity of the first Type-c interface is matched with the transmission driving current flowing through the wireless charging transmitter, namely, the power supply is required by equipment, or the power supply is negotiated. The first voltage threshold is in a voltage range of the first configuration pin CC1 or the second configuration pin CC2 when the first Type-c interface specified by the fast charging protocol searches for a device, and in particular, the first voltage threshold is less than 1.6V according to the protocol of USB Power Delivery. And when the first Type-c interface searches the wireless charging transmitter, the preset low level is the voltage value of the positive traditional data pin D+ or the negative traditional data pin D-.
And the quick charge strategy management unit is internally provided with a quick charge protocol firmware and is used for processing other quick charge protocols. The ADC conversion unit is used for collecting analog quantity to be detected, and comprises sampling and receiving the rapid charging protocol and wireless charging protocol signals on the second preset data pin, demodulating the rapid charging protocol and wireless charging protocol signals, and transmitting the signals to the wireless charging control unit and the rapid charging strategy management unit for processing. In the embodiment of the present invention, the ADC conversion unit is configured to sample and receive, through the high-speed data receiving pin RX1 on the first Type-c interface, an analog quantity of the wireless charging protocol signal transmitted by the high-speed differential receiving data pin RX1 corresponding to the second Type-c interface, convert the analog quantity into a digital quantity, and transmit the digital quantity to the wireless charging control unit for processing. In addition, the safety monitoring unit performs functions including overvoltage detection, overcurrent detection and overtemperature detection; the constant voltage/constant current control unit is a loop control circuit for constant voltage/current output.
A charging method based on the wireless charging power supply system, as shown in fig. 2, includes:
step S1: the wireless charging power supply system is powered on for resetting, the adapter and the wireless charging transmitter are reset to an initial state, and then the adapter supplies power to the wireless charging transmitter through the Type-c cable; specifically, when the adapter is powered on, the wireless charging transmitter can be electrically connected with the adapter through a type-c cable, or can be electrically disconnected when the adapter is powered on. And then proceeds to step S2.
Step S2: the charging controller judges whether the load equipment and the adapter establish an electrical connection relation through the first debugging resistor R1, if so, the step S3 is entered, otherwise, the charging controller stays in the step S2 to wait for the load equipment to establish the electrical connection relation. When the charging controller detects that the level signal at the first configuration pin CC1 or the second configuration pin CC2 of the first Type-c interface is changed from the second voltage threshold to the first voltage threshold, it is determined that a load device and the adapter establish an electrical connection relationship, and accordingly connection of the corresponding pins in the first Type-c interface and the second Type-c interface is completed, wherein the load device comprises the wireless charging transmitter.
Step S3: the charging controller judges whether the load device is the wireless charging transmitter through the second debugging resistor R2, when the charging controller still detects that the level signal of the first configuration pin CC1 or the second configuration pin CC2 of the second Type-c interface is changed from a second voltage threshold value to the first voltage threshold value, the load device is determined to have established a stable electric connection relation with the adapter, and the load device is not detected to be the wireless device, the step S4 is entered; when the charging controller further detects that the level signals of the short circuit ends of the positive traditional data pin d+ and the negative traditional data pin D-of the second Type-c interface are changed from the preset high level to the preset low level, it is determined that the load device has established a stable electrical connection relationship with the wireless charging transmitter, and step S5 is entered.
Step S4: and when the charge controller enters a fast charge protocol processing flow, the fast charge policy management unit performs protocol communication according to a fast charge protocol and the load equipment, and configures the first Type-c interface to output current/voltage required by the load equipment.
Step S5: the charging controller enters a wireless charging protocol processing flow, the wireless charging control unit performs protocol communication with the wireless charging equipment based on a wireless charging protocol, configures the first Type-c interface to output current/voltage required by the wireless charging equipment to the wireless charging transmitter, and then starts to transmit electromagnetic energy through the transmitting coil L.
Specifically, the second voltage threshold is in a voltage range of the first configuration pin CC1 or the second configuration pin CC2 specified by the fast charging protocol when the Type-c interface does not find the device, and in particular, the second voltage threshold is 3.3V or 5V specified by the protocol of USB Power Delivery. When the preset high level is that the Type-c interface does not search for the device, the voltage value of the positive legacy data pin d+ or the negative legacy data pin D-is generally greater than the voltage value of the corresponding pin of the device found by the Type-c interface when the Type-c interface does not search for the device.
Preferably, the adapter may be disconnected from the wireless charging transmitter prior to power up.
Preferably, the fast-fill protocol includes, but is not limited to, a USB PD fast-fill protocol.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (10)
1. The wireless charging power supply system comprises an adapter and a wireless charging transmitter, wherein the adapter comprises a charging controller and a first Type-c interface, the wireless charging transmitter comprises a second Type-c interface and a transmitting coil, a pin on the first Type-c interface and a pin on the second Type-c interface are correspondingly connected through a Type-c cable, and the wireless charging power supply system is characterized in that the charging controller supports a fast charging protocol and a wireless charging protocol at the same time, the wireless charging transmitter does not integrate a main control chip, and the main control chip is a processor supporting the wireless charging protocol;
the wireless charging transmitter further comprises a full-bridge driving circuit, a first debugging resistor and a second debugging resistor, wherein one end of the first debugging resistor is connected with a configuration channel pin of the second Type-c interface, the other end of the first debugging resistor is grounded and is used for assisting the charging controller to detect the condition that load equipment is connected to the adapter, and the configuration channel pin comprises a first configuration pin or a second configuration pin;
one end of the second debugging resistor is connected with a positive traditional data pin and/or a negative traditional data pin of the second Type-c interface, and the other end of the second debugging resistor is grounded and is used for assisting the charging controller to detect the condition that the wireless charging transmitter is connected with the adapter on the premise that the charging controller confirms that the load equipment is connected with the adapter;
the control end of the full-bridge driving circuit is correspondingly connected with a first preset data pin of the second Type-c interface, the port of the charging controller is correspondingly connected with a pin on the first Type-c interface, and the charging controller is used for adjusting and outputting corresponding configuration voltage to the second Type-c interface according to the level state of the relevant pin of the first Type-c interface after the full-bridge driving circuit is electrically connected with the adapter through the second Type-c interface, so that the full-bridge driving circuit drives the transmitting coil to perform wireless charging; wherein the first preset data pin includes: the high-speed differential receiving data pin, the high-speed differential sending data pin or other idle data pins on the second Type-c interface.
2. The wireless charging power system of claim 1, wherein the pins of the first Type-c interface and the pins of the second Type-c interface are pins having the same designation and are used for transmitting signals of the same Type.
3. The wireless charging power system of claim 1, wherein the full-bridge drive circuit comprises a first NMOS transistor, a second NMOS transistor, a third NMOS transistor, a fourth NMOS transistor, and a capacitor;
the drain electrode of the first NMOS tube and the drain electrode of the third NMOS tube are connected with the power supply pin of the second Type-c interface, and the source electrode of the second NMOS tube and the source electrode of the fourth NMOS tube are grounded;
the source electrode of the first NMOS tube is connected with the drain electrode of the second NMOS tube, and the common connection node of the first NMOS tube is connected with one end of the transmitting coil;
the source electrode of the third NMOS tube is connected with the drain electrode of the fourth NMOS tube, and the common connection node of the third NMOS tube is connected with the other end of the transmitting coil through a capacitor;
the grid electrode of the first NMOS tube, the grid electrode of the second NMOS tube, the grid electrode of the third NMOS tube and the grid electrode of the fourth NMOS tube are respectively connected with four first preset data pins of the second Type-c interface and used as control ends of the full-bridge driving circuit;
the common connection node of the capacitor and the transmitting coil is connected with a second preset data pin of the second Type-c interface and is used as a resonance capacitor of the wireless charging power supply system; the second preset data pin comprises other idle data pins except the first preset data pin on the second Type-c interface.
4. The wireless charging power system of claim 1, wherein the positive legacy data pin or the negative legacy data pin of the second Type-c interface is connected to a corresponding pin of a small control chip, and is configured to communicate with the charging controller, and identify a Type of a load device connected to the adapter according to a communication result, wherein the small control chip is integrated in the wireless charging transmitter and is a small single chip microcomputer that does not support a wireless charging protocol.
5. The wireless charging power system of claim 3, wherein the charging controller comprises a fast charge policy management unit, a wireless charging control unit, and an ADC conversion unit;
the wireless charging control unit is used for configuring an output power supply of the first Type-c interface according to a wireless charging protocol when the charging controller detects that the level of the first configuration pin or the second configuration pin of the first Type-c interface is a first voltage threshold value and the positive traditional data pin and/or the negative traditional data pin of the first Type-c interface is a preset low level, so that the first Type-c interface outputs the power supply required by wireless equipment; the first voltage threshold is in a voltage range of the configuration channel pin when the Type-c interface specified by the fast charging protocol searches for the equipment; the preset low level is a voltage value of the positive traditional data pin and/or the negative traditional data pin when the Type-c interface searches the wireless charging transmitter;
the fast charging policy management unit is configured to configure an output power supply of the first Type-c interface according to a fast charging protocol when the charging controller detects that only the level of the first configuration pin or the second configuration pin of the first Type-c interface is the first voltage threshold, so that the first Type-c interface outputs a power supply required by a fast charging device;
the ADC conversion unit is used for collecting analog quantity to be detected, and comprises sampling and receiving a rapid charging protocol signal and a wireless charging protocol signal on the second preset data pin, demodulating the rapid charging protocol signal and the wireless charging protocol signal, and transmitting the rapid charging protocol signal and the wireless charging protocol signal to the wireless charging control unit and the rapid charging strategy management unit for processing.
6. The wireless charging power system of claim 5, wherein the fast charge policy management unit supports a USB PD fast charge protocol.
7. A charging method based on the wireless charging power supply system of any one of claims 1 to 6, the charging method comprising: the wireless charging power supply system is powered on and reset, and then supplies power to the wireless charging transmitter through the Type-c cable, and the wireless charging power supply system is characterized by further comprising:
according to the state of the level signal of the first configuration pin or the second configuration pin of the first Type-c interface, the charging controller judges whether the load equipment and the adapter are identified to establish an electric connection relation, if so, the load equipment is judged to be the wireless charging transmitter through the level signal of the positive traditional data pin and/or the level signal of the negative traditional data pin of the first Type-c interface, and when the load equipment is judged to be the wireless charging transmitter, the wireless charging control unit configures an output power supply of the first Type-c interface according to a wireless charging protocol packet; and when the load equipment is not the wireless charging transmitter, the fast charging strategy management unit configures the output power supply of the first Type-c interface according to a fast charging protocol packet.
8. The charging method of claim 7, wherein the adapter establishes an electrical connection with the load device when the charging controller detects that the level signal of the first configuration pin or the second configuration pin of the first Type-c interface changes from a second voltage threshold to a first voltage threshold;
when the charging controller still detects that the level signal of the first configuration pin or the second configuration pin of the first Type-c interface is changed from the second voltage threshold to the first voltage threshold, and the level signal of the positive legacy data pin and/or the negative legacy data pin of the first Type-c interface is changed from a preset high level to a preset low level, the load device determines to be the wireless charging transmitter;
the second voltage threshold is in a voltage range of the configuration channel pin specified by the fast charging protocol when the Type-c interface does not search for the equipment; the preset high level is a voltage value of the positive legacy data pin or the negative legacy data pin when the Type-c interface does not find the device.
9. The charging method of claim 7, wherein the adapter is disconnected from the wireless charging transmitter prior to powering up.
10. The charging method of claim 7, wherein the fast charging protocol comprises a USB PD fast charging protocol.
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110007742B (en) * | 2019-03-27 | 2022-03-29 | 合肥联宝信息技术有限公司 | Power management circuit and electronic equipment |
| CN111949107B (en) * | 2019-05-15 | 2023-11-07 | 北京小米移动软件有限公司 | Method and device for controlling electronic equipment comprising USB Type-C interface and electronic equipment |
| CN111030208B (en) * | 2019-11-19 | 2021-07-20 | 国网江苏省电力有限公司电力科学研究院 | Household appliance power supply method, power receiving method and circuit based on USB Type-C interface |
| CN111211603A (en) * | 2020-03-06 | 2020-05-29 | 深圳市同为数码科技股份有限公司 | QC2.0 protocol circuit applied to terminal equipment |
| RU201417U1 (en) * | 2020-03-23 | 2020-12-14 | Федеральное Государственное Бюджетное Образовательное Учреждение Высшего Образования «Новосибирский Государственный Технический Университет» | NON-CONTACT CHARGER FOR ELECTRIC CAR |
| CN111817383B (en) * | 2020-07-14 | 2022-04-01 | 维沃移动通信有限公司 | Adapter, charger and charging equipment |
| CN113766614B (en) * | 2021-06-10 | 2023-04-18 | 荣耀终端有限公司 | Method for reducing power consumption of terminal equipment and terminal equipment |
| CN116349109A (en) * | 2021-08-06 | 2023-06-27 | 深圳市华思旭科技有限公司 | Charging circuit and electronic equipment |
| CN117154959A (en) * | 2023-02-14 | 2023-12-01 | 荣耀终端有限公司 | Charging system and method |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101251316B1 (en) * | 2011-09-28 | 2013-04-05 | (주)에스피에스 | Power supply for charging a battery |
| CN203632330U (en) * | 2013-12-04 | 2014-06-04 | 宋艳 | Separate-type wireless charger |
| CN106026257A (en) * | 2016-06-24 | 2016-10-12 | 青岛海信移动通信技术股份有限公司 | Mobile terminal |
| CN106537725A (en) * | 2014-07-22 | 2017-03-22 | 罗姆股份有限公司 | Charging circuit, electronic device using same, and charger |
| CN106654742A (en) * | 2016-12-27 | 2017-05-10 | 歌尔科技有限公司 | USB hub supporting rapid charge |
| CN106992372A (en) * | 2017-05-31 | 2017-07-28 | 珠海市魅族科技有限公司 | USB cable, USB interface and adapter |
| CN206559059U (en) * | 2016-08-31 | 2017-10-13 | 珠海市一微半导体有限公司 | Support the management of charging and discharging circuit of lightning interface protocols |
| CN107979394A (en) * | 2017-12-27 | 2018-05-01 | 中山德著智能科技有限公司 | A kind of wireless data acquisition device based on Qi agreement wireless energy supplies |
| WO2018090371A1 (en) * | 2016-11-21 | 2018-05-24 | 深圳市柔宇科技有限公司 | Electronic device, charger, charging system and charging method |
| CN208890450U (en) * | 2018-10-23 | 2019-05-21 | 珠海市一微半导体有限公司 | A kind of wireless charging power-supply system of Type-c interface |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10148096B2 (en) * | 2014-07-07 | 2018-12-04 | Mediatek Singapore Pte. Ltd. | Wireless or wired power delivery using a controllable power adapter |
| CN104993182B (en) * | 2015-08-05 | 2018-01-09 | 青岛海信移动通信技术股份有限公司 | A kind of mobile terminal, can directly charge source adapter and charging method |
-
2018
- 2018-10-23 CN CN201811239037.4A patent/CN109193888B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101251316B1 (en) * | 2011-09-28 | 2013-04-05 | (주)에스피에스 | Power supply for charging a battery |
| CN203632330U (en) * | 2013-12-04 | 2014-06-04 | 宋艳 | Separate-type wireless charger |
| CN106537725A (en) * | 2014-07-22 | 2017-03-22 | 罗姆股份有限公司 | Charging circuit, electronic device using same, and charger |
| CN106026257A (en) * | 2016-06-24 | 2016-10-12 | 青岛海信移动通信技术股份有限公司 | Mobile terminal |
| CN206559059U (en) * | 2016-08-31 | 2017-10-13 | 珠海市一微半导体有限公司 | Support the management of charging and discharging circuit of lightning interface protocols |
| WO2018090371A1 (en) * | 2016-11-21 | 2018-05-24 | 深圳市柔宇科技有限公司 | Electronic device, charger, charging system and charging method |
| CN106654742A (en) * | 2016-12-27 | 2017-05-10 | 歌尔科技有限公司 | USB hub supporting rapid charge |
| CN106992372A (en) * | 2017-05-31 | 2017-07-28 | 珠海市魅族科技有限公司 | USB cable, USB interface and adapter |
| CN107979394A (en) * | 2017-12-27 | 2018-05-01 | 中山德著智能科技有限公司 | A kind of wireless data acquisition device based on Qi agreement wireless energy supplies |
| CN208890450U (en) * | 2018-10-23 | 2019-05-21 | 珠海市一微半导体有限公司 | A kind of wireless charging power-supply system of Type-c interface |
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|---|---|
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