Power receiving end, and wireless power supply system and control method therefor

Abstract

Provided in the present disclosure are a power receiving end, and a wireless power supply system and a control method therefor. The power receiving end is configured to be mutually coupled to a power transmitting end in the wireless power supply system, and the power receiving end comprises a receiving circuit and a receiving controller, wherein the receiving controller comprises a first unit and a second unit; the first unit is connected to the receiving circuit; the receiving circuit is configured to supply power to the first unit when the wireless power supply system is in a power supply state; the power supply state involves the power transmitting end transmitting electrical energy to the power receiving end; and the second unit is configured to be connected to an additional power source, and the additional power source is configured to supply power to the second unit. In the solution of the present disclosure, power is separately supplied to the first unit and the second unit, such that when the wireless power supply system is in a power supply suspension state, the additional power source can still guarantee the continuous operation of the second unit, thereby avoiding the stability of a back end being affected by the sudden stopping of the operation of the receiving controller during a power failure.

Description

A power receiving end, a wireless power supply system and a control method thereof

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This disclosure claims priority to Chinese patent application number 202410033135.1, filed with the Patent Office of China on January 10, 2024, entitled “A power receiving end, wireless power supply system and control method thereof,” the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0003] The present disclosure relates to the field of wireless charging systems, and in particular to a power receiving terminal, a wireless power supply system and a control method thereof. Background Art

[0004] Traditional power transmission is mainly through wires. Due to its own shortcomings, wired charging has its limitations in special environments such as humid, flammable, and medical implants, and also brings many inconveniences in daily life.

[0005] Wireless charging technology overcomes the shortcomings of traditional wired charging methods and is gaining increasing attention. Its applications are becoming increasingly widespread across consumer electronics, industrial products, medical services, and other fields. Wireless charging devices are now ubiquitous, and their popularity is increasing in smartphones, wireless headphones, wearable digital products, and other devices.

[0006] The wireless power supply system can be configured to charge wireless charging devices. The stability of its operating state directly affects the efficiency of wireless charging and user experience.

[0007] Application Contents

[0008] The present disclosure aims to provide a power receiving end, a wireless power supply system and a control method thereof, so as to at least partially improve the above-mentioned problems.

[0009] In order to achieve the above objectives, the technical solutions adopted in the embodiments of the present disclosure are as follows:

[0010] In a first aspect, an embodiment of the present disclosure provides a power receiving end, wherein the power receiving end is configured to be coupled with a power transmitting end in a wireless power supply system, the power receiving end includes a receiving circuit and a receiving controller, and the receiving controller includes a first unit and a second unit;

[0011] The first unit is connected to the receiving circuit;

[0012] The receiving circuit is configured to supply power to the first unit when the wireless power supply system is in a powering state;

[0013] The power supply state is that the power transmitting end transmits electric energy to the power receiving end;

[0014] The second unit is configured to be connected to an additional power source, and the additional power source is configured to power the second unit.

[0015] Optionally, the first unit is configured to send a power supply suspension instruction to the power transmitting end, and send operating status information and configuration information to the second unit before the power transmitting end suspends power supply;

[0016] The second unit is configured to transmit the operating status information and the configuration information back to the first unit after the power transmitting end resumes power supply;

[0017] The first unit is configured to operate based on the running status information and the configuration information after receiving the returned running status information and the configuration information.

[0018] Optionally, the configuration information includes a timing duration for suspending power supply, and the second unit includes a timing circuit;

[0019] The timing circuit is configured to count the duration of the power transmission end suspending power supply.

[0020] Optionally, the second unit is further configured to send an alarm message to a host computer when the duration of the power supply suspension at the power transmitting end exceeds the timing duration;

[0021] The host computer is configured to send a reset signal to the second unit when receiving the alarm information, so that the second unit performs a reset operation.

[0022] Optionally, the configuration information includes a timing duration for suspending power supply, and the second unit includes a timing circuit;

[0023] The timing circuit is configured to count the duration of the power transmission end suspending power supply.

[0024] Optionally, the second unit is further configured to perform a reset operation when the duration of the power supply suspension at the power transmitting end exceeds the timing duration.

[0025] Optionally, the first unit is configured to send a power supply suspension instruction to the power transmitting end;

[0026] The power transmitting end is configured to send a confirmation packet to the first unit after receiving the power supply suspension instruction, and suspend the power supply after maintaining the power supply for a preset time length;

[0027] The first unit is configured to decode the confirmation packet after receiving it.

[0028] Optionally, the communication mode between the first unit and the power transmitting end is any one or more of a load modulation communication mode, an amplitude modulation communication mode, a frequency modulation communication mode and a phase modulation communication mode.

[0029] Optionally, the receiving circuit includes a receiving coil, a second matching device, and a rectifier connected in cascade sequence;

[0030] The receiving coil is configured to be mutually coupled with the transmitting coil in the power transmitting end, and the rectifier is configured to be connected to the load module at the rear end.

[0031] Optionally, the first unit is connected to an output end of the rectifier, and the rectifier is configured to convert the alternating current output by the second matcher into direct current and transmit it backward.

[0032] Optionally, a regulator is provided at the rear end of the rectifier, and the regulator is configured to be connected to the load module. The regulator is connected to the first unit and is controlled by the first unit.

[0033] In a second aspect, an embodiment of the present disclosure provides a wireless power supply system, which includes a power transmitting end and the above-mentioned power receiving end, and the power transmitting end and the power receiving end are coupled to each other.

[0034] Optionally, the power transmitting end includes a transmitting controller, a first matching device, an inverter and a transmitting coil;

[0035] The inverter, the first matcher, and the transmitting coil are sequentially cascaded, the inverter is configured to be connected to an external power supply, and the transmitting coil is configured to be mutually coupled with the receiving coil in the power receiving end;

[0036] The transmission controller is connected to the first matcher and / or the inverter, and is configured to send a control instruction to the first matcher and / or the inverter.

[0037] In a third aspect, an embodiment of the present disclosure provides a wireless power supply system control method, which should be configured as the above-mentioned wireless power supply system, and the method includes:

[0038] The first unit sends a power supply suspension instruction to the power transmitter;

[0039] The first unit sends the operating status information and configuration information to the second unit before the power transmitter suspends power supply;

[0040] After the power transmitting end resumes power supply, the second unit transmits the operating status information and the configuration information back to the first unit;

[0041] After receiving the returned running status information and the configuration information, the first unit operates based on the running status information and the configuration information.

[0042] Optionally, the configuration information includes a timing duration for suspending power supply, the second unit includes a timing circuit, and the timing circuit is configured to count a duration for suspending power supply at the power transmitting end. The method further includes:

[0043] The second unit sends an alarm message to the upper computer when the power transmitter suspends power supply for a period exceeding the timer duration;

[0044] When receiving the alarm information, the host computer sends a reset signal to the second unit, so that the second unit performs a reset operation.

[0045] Optionally, after the first unit sends a power supply suspension instruction to the power transmitting end, the method further includes:

[0046] After receiving the power supply suspension instruction, the power transmitting end sends a confirmation packet to the first unit, and keeps supplying power for a preset time length before suspending the power supply; after receiving the confirmation packet, the first unit decodes it.

[0047] Compared with the prior art, the embodiment of the present disclosure provides a power receiving end, a wireless power supply system and a control method thereof, wherein the power receiving end is configured to be coupled with the power transmitting end in the wireless power supply system, the power receiving end includes a receiving circuit and a receiving controller, and the receiving controller includes a first unit and a second unit; the first unit is connected to the receiving circuit; the receiving circuit is configured to power the first unit when the wireless power supply system is in a power supply state; wherein the power supply state is that the power transmitting end transmits electric energy to the power receiving end; the second unit is configured to be connected to an additional power supply, and the additional power supply is configured to power the second unit. By separately powering the first unit and the second unit, the disclosed solution can ensure that the additional power supply can continue to operate when the wireless power supply system is in a suspended power supply state, thereby avoiding the sudden cessation of the receiving controller when the power is cut off, thereby affecting the stability of the back end.

[0048] In order to make the above-mentioned objectives, features and advantages of the present disclosure more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following briefly introduces the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without any creative work.

[0050] FIG1 is a block diagram of a wireless power supply system provided by an embodiment of the present disclosure;

[0051] FIG2 is a schematic diagram of a signaling processing process according to an embodiment of the present disclosure;

[0052] FIG3 is a flow chart of a wireless power supply system control method according to an embodiment of the present disclosure;

[0053] FIG4 is a second flow chart of a wireless power supply system control method according to an embodiment of the present disclosure;

[0054] FIG5 is a third flow chart of the wireless power supply system control method provided in an embodiment of the present disclosure.

[0055] In the figure: 10-power receiving end; 20-power transmitting end; 110-receiving controller; 111-first unit; 112-second unit; 120-second matching device; 130-rectifier; 140-receiving coil; 210-transmitting controller; 220-first matching device; 230-inverter; 240-transmitting coil; 30-additional power supply. DETAILED DESCRIPTION

[0056] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure more clear, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are only some of the embodiments of the present disclosure, but not all of them. Generally, the components of the embodiments of the present disclosure described and shown in the drawings herein can be arranged and designed in various different configurations.

[0057] Therefore, the following detailed description of the embodiments of the present disclosure provided in the accompanying drawings is not intended to limit the scope of the present disclosure as claimed, but merely represents selected embodiments of the present disclosure. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present disclosure without creative effort shall fall within the scope of protection of the present disclosure.

[0058] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. At the same time, in the description of the present disclosure, the terms "first," "second," etc. are only configured to distinguish the description and should not be understood as indicating or implying relative importance.

[0059] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply the existence of any such actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or device comprising the element.

[0060] In the description of the present disclosure, it should be noted that the terms "upper", "lower", "inside", "outside", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the disclosed products are usually placed when in use. They are only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present disclosure.

[0061] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified or limited, the terms "disposed" and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, or electrical connections; direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this disclosure based on the specific circumstances.

[0062] The following describes some embodiments of the present disclosure in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0063] Please refer to Figure 1, which is a block diagram of a wireless power supply system provided by an embodiment of the present disclosure. As shown in Figure 1, the wireless power supply system includes a power transmitter 20 and a power receiver 10, which are coupled to each other.

[0064] Optionally, the power transmitter 20 may include a transmitter controller 210, a first matcher 220, an inverter 230, and a transmitter coil 240. The transmitter controller 210 is connected to the first matcher 220 and / or the inverter 230 (not shown in the figure), and the transmitter controller 210 may send control instructions to the first matcher 220 and / or the inverter 230 to achieve corresponding control purposes.

[0065] The inverter 230, first matching unit 220, and transmitting coil 240 are sequentially connected in cascade. The inverter 230 is configured to be connected to an external power source. The transmitting coil 240 is configured to be coupled to the receiving coil 140 in the power receiving end 10. The coupling allows the transmitting coil 240 and the receiving coil 140 to transmit power.

[0066] The power receiving end 10 includes a receiving circuit and a receiving controller 110. The receiving circuit may include a receiving coil 140, a second matching element 120, and a rectifier 130, which are connected in cascade. The receiving coil 140 is configured to be coupled to the transmitting coil 240 in the power transmitting end 20. The rectifier 130 is configured to connect to a load module at the back end. This load module may be, but is not limited to, a battery in a mobile phone, a battery in a tablet, or a battery in a smartwatch. When the wireless charging system is in a powered state and the power transmitting end 20 transmits power to the power receiving end 10, the rectifier 130 can provide power to the load module, thereby charging or supplying power to the load module.

[0067] Optionally, the receiving controller 110 includes a first unit 111 and a second unit 112 .

[0068] The first unit 111 may be the main power supply unit in the receiving controller 110, including but not limited to the communication sub-circuit. The second unit 112 may be a low-power unit in the receiving controller 110. The second unit 112 is configured to connect to an additional power supply 30, and the additional power supply 30 is configured to supply power to the second unit 112. The additional power supply 30 may be provided by a battery in a device (e.g., a mobile phone), or by a host computer (e.g., a CPU) in the device through a GPIO (General-Purpose Input / Output) pin. The voltage range of the additional power supply 30 includes the battery voltage (3.5V to 4.5V) or a low-voltage GPIO (3.3V / 1.8V / 1.5V / 1.2V, etc.).

[0069] Optionally, the second unit 112 may include the timing circuit and its controller, data storage space, and communication and reset subcircuits for interacting with a host computer, as described below. The first unit 111 may include other control modules besides the second unit 112, such as a main controller, main storage space, GPIO, an analog-to-digital converter (ADC), an amplitude shift keying (ASK) communication subcircuit, a frequency shift keying (FSK) communication subcircuit, and a protection subcircuit. Optionally, the second unit 112 consumes less than 100 μA of current from the additional power supply 30.

[0070] Optionally, the second unit 112 consumes 30 μA of current from the additional power supply 30 , allowing a deviation within a preset range.

[0071] The first unit 111 is connected to the receiving circuit. Optionally, the first unit 111 is connected to the output of a rectifier 130 in the receiving circuit. The rectifier 130 is configured to convert the AC power output by the second matcher 120 into DC power and transmit it back. When the wireless charging system is in a power supply state, the receiving circuit (rectifier 130) is configured to power the first unit 111. The power supply state is when the power transmitting end 20 transmits power to the power receiving end 10.

[0072] Optionally, the first unit 111 is connected to the second matcher 120 or other components in the receiving circuit (not shown in the figure), and the first unit 111 can send control instructions to the second matcher 120 or other components in the receiving circuit to achieve corresponding control purposes.

[0073] The receiving controller 110 in the power receiving end 10 and the transmitting controller 210 in the power transmitting end 20 are configured to perform communication, protocol processing, power control in power transmission, protection and other functions. Among them, many functions require data communication between the transmitting controller 210 and the receiving controller 110.

[0074] Optionally, the transmitting controller 210 is communicatively connected to the first unit 111 in the receiving controller 110, and the communication mode between the first unit 111 and the transmitting controller 210 in the power transmitter 20 is any one or more of a load modulation communication mode, an amplitude modulation communication mode, a frequency modulation communication mode, and a phase modulation communication mode. In addition to the above in-band communication mode, the first unit 111 and the transmitting controller 210 can also communicate using mobile hotspots (abbreviated as WiFi), near field communication (NFC), and Bluetooth.

[0075] It should be noted that both the receiving controller 110 and the transmitting controller 210 require power. In an optional embodiment of the present disclosure, the transmitting controller 210 can obtain power from a transmitting circuit formed by sequentially cascading the inverter 230, the first matching unit 220, and the transmitting coil 240.

[0076] In the disclosed solution, the receiving controller 110 is divided into two parts: a first unit 111 and a second unit 112. The first unit 111 is powered by the receiving circuit (rectifier 130), and the second unit 112 is powered by the additional power supply 30. Compared to the situation where the entire receiving controller 110 is completely powered by the receiving circuit (rectifier 130), the receiving controller 110 will not be able to operate when the coupling between the power receiving end 10 and the power transmitting end 20 is unsuccessful, that is, when the power transmitting end 20 does not transmit power to the power receiving end 10. In the disclosed solution, by providing separate power supplies, the first unit 111 can stop operating when the power transmitting end 20 does not transmit power to the power receiving end 10, while the second unit 112 can continue to operate stably. The second unit 112 can save the operating status information and configuration information of the power receiving end 10, and when the power transmitting end 20 resumes power supply, the power receiving end 10 can quickly return to a stable operating state.

[0077] Compared with the case where the entire receiving controller 110 is completely powered by the additional power supply 30, the power consumption of the receiving controller 110 on the additional power supply 30 is relatively high, which can reach 10 mA, which will affect the service life of the additional power supply 30 (battery). In this disclosure, by separate power supply, when the power transmitting end 20 is not transmitting power to the power receiving end 10, the second unit 112 can be guaranteed to continue to operate stably and the power consumption of the additional power supply 30 can be reduced as much as possible.

[0078] An embodiment of the present disclosure provides a power receiving end, such as the power receiving end 10 in the wireless power supply system shown in Figure 1. When the wireless power supply system is in a suspended power supply state, the additional power supply 30 can still ensure that the second unit 112 continues to operate, thereby avoiding the receiving controller 110 suddenly stopping working when the power is cut off, affecting the stability of the back end.

[0079] In an optional embodiment of the present disclosure, a regulator is provided at the rear end of the rectifier 130 , and the regulator is configured to be connected to the load module. The regulator can be connected to the first unit 111 and be controlled by the first unit 111 .

[0080] In an optional implementation manner of the present disclosure, the first unit 111 is communicatively connected to the second unit 112 , and data can be exchanged between the two.

[0081] Optionally, the first unit 111 is configured to send a power supply suspension instruction to the power transmitting end 20 , and send the operating status information and configuration information to the second unit 112 before the power transmitting end 20 suspends power supply.

[0082] Optionally, the operating status information of the power receiving end 10 may include output voltage, output current and output power, and the configuration information of the power receiving end 10 includes operating frequency, negotiated maximum power level, negotiated current power level, identification of the power transmitting end 20 (for example, the ID of the power transmitting end 20), the power supply contract negotiated between the power receiving end 10 and the power transmitting end 20, parameters negotiated between the power receiving end 10 and the power transmitting end 20, the international wireless charging standard (Qi) version, the international wireless charging standard (Qi) configuration file and the timing duration of power suspension, etc.

[0083] It should be noted that suspending power supply by the power transmitter 20 helps to reduce system temperature or realize some functions of the power receiver 10 when no power is received. The first unit 111 can send a power supply suspension instruction to the power transmitter 20 under the control of the user or the host computer.

[0084] The second unit 112 is configured to transmit the operating status information and the configuration information back to the first unit 111 after the power transmitting end 20 resumes power supply.

[0085] The first unit 111 is configured to, after receiving the returned operating status information and configuration information, operate based on the operating status information and configuration information to restore the power receiving end 10 to the operating state before the power transmitting end 20 suspends power supply.

[0086] In an optional implementation of the present disclosure, the configuration information may include a timing duration for suspending power supply, and the second unit 112 may include a timing circuit.

[0087] The timing circuit is configured to count the duration of the power transmission end 20 suspending power supply.

[0088] Optionally, the timing circuit is connected to the flag of the first unit 111. After the power transmitter 20 suspends power supply, the flag of the first unit 111 switches state, for example, from a high level to a low level, so that the timing circuit can detect the initial time when the power transmitter 20 suspends power supply. After detecting that the power transmitter 20 suspends power supply, the timing circuit starts timing to obtain the duration of the power transmitter 20 suspending power supply.

[0089] The second unit 112 is further configured to send an alarm message to the upper computer when the power transmitting end 20 suspends power supply for a period exceeding a predetermined period.

[0090] Optionally, the host computer may be a CPU in a mobile device (eg, a mobile phone), and the mobile device is deployed at the power receiving end 10 shown in FIG1 of the present disclosure. The host computer is in communication connection with the second unit 112 .

[0091] Optionally, an alarm message is sent to the host computer so that the host computer knows that the power transmitting end 20 has not resumed power supply within a preset timing period, for example, the power receiving end 10 has been removed (or deleted) from the power transmitting end 20 during the power supply suspension period.

[0092] The host computer is configured to send a reset signal to the second unit 112 upon receiving the alarm information, so that the second unit 112 performs a reset operation.

[0093] Optionally, the second unit 112 performs a reset operation to delete the operating status information and configuration information stored therein. When power is restored, the power receiving end 10 will be restored to the initial state. It should be emphasized that the restoration of the initial state here does not mean restoring to the operating state before the power transmitting end 20 suspended power supply as mentioned above. The initial state can be a factory state or a default state.

[0094] Optionally, after performing the reset operation, when power is restored, the receiving controller 110 (first unit 111 ) and the transmitting controller 210 may renegotiate.

[0095] In an optional embodiment of the present disclosure, upon receiving the alarm information, the host computer changes the value of the corresponding input signal of the first unit 111 (eg, high and low of the GPIO) to force the first unit 111 to reset.

[0096] Optionally, after the reset, the additional power supply 30 may stop supplying power to the second unit 112. When the power supply needs to be suspended next time, the first unit 111 may send a corresponding request to the host computer so that the host computer controls the additional power supply 30 to supply power to the second unit 112.

[0097] In an optional embodiment of the present disclosure, the configuration information may include a timing duration for suspending power supply, and the second unit 112 may include a timing circuit configured to count the duration for suspending power supply at the power transmitter 20 .

[0098] The second unit 112 is further configured to perform a reset operation when the duration of the power supply suspension of the power transmitting end 20 exceeds a timing duration.

[0099] Based on the foregoing, regarding how to trigger the suspension of power supply, the embodiment of the present disclosure also provides an optional implementation method, please refer to the following.

[0100] The first unit 111 is configured to send a power supply suspension instruction to the power transmitting end 20 .

[0101] The power transmitting end 20 is configured to send a confirmation packet to the first unit 111 after receiving the power supply suspension instruction, and to suspend the power supply after maintaining the power supply for a preset time length.

[0102] The first unit 111 is configured to decode the confirmation packet after receiving it.

[0103] Optionally, the first unit 111 decodes the confirmation packet (also called ACK) to know that the power transmitting end 20 has successfully received the power supply suspension instruction and is ready to enter the power supply suspension state.

[0104] Please refer to Figure 2, which is a schematic diagram of the signaling processing process provided by an embodiment of the present disclosure. The first unit 111 sends a power supply pause instruction to the power transmitter 20. After receiving the power supply pause instruction, the power transmitter 20 sends a confirmation packet to the first unit 111. After sending the confirmation packet, the power transmitter 20 continues to supply power for a preset time length and then pauses the power supply, thereby avoiding the situation where insufficient decoding time occurs and the confirmation packet cannot be successfully decoded.

[0105] Optionally, the preset time length may be 5 ms, with a minimum of 2 ms, to ensure that each compatible power receiving end 10 has enough time to complete decoding.

[0106] The present disclosure also provides a wireless power supply system control method, which can be, but is not limited to, configured as the wireless power supply system shown in Figure 1. Please refer to Figure 3, which is a flow chart of a wireless power supply system control method provided in the present disclosure. As shown in Figure 3, the wireless power supply system control method includes steps S101, S102, S105, and S106, which are described in detail below.

[0107] S101, the first unit sends a power supply suspension instruction to the power transmitter;

[0108] In step S102, the first unit sends the operating status information and configuration information to the second unit before the power transmitting end suspends power supply; in step S105, the second unit transmits the operating status information and configuration information back to the first unit after the power transmitting end resumes power supply; in step S106, after receiving the returned operating status information and configuration information, the first unit operates based on the operating status information and configuration information.

[0109] Optionally, the configuration information may include a timed duration for suspending power supply, and the second unit 112 may include a timing circuit configured to count the duration for which the power transmitter 20 suspends power supply. Based on this, please refer to FIG. 4 , which is a second flow chart of the wireless power supply system control method provided in an embodiment of the present disclosure. As shown in FIG. 4 , the wireless power supply system control method further includes: S104 and S301 , which are described in detail below.

[0110] S104, when the second unit suspends power supply at the power transmitter for a period exceeding a predetermined time, the second unit sends an alarm message to the upper computer;

[0111] S301: When receiving the alarm information, the host computer sends a reset signal to the second unit to enable the second unit to perform a reset operation.

[0112] Please refer to FIG5 , which is a third flow chart of the wireless power supply system control method provided in an embodiment of the present disclosure.

[0113] As shown in FIG5 , in S101 , after the first unit sends a power supply suspension instruction to the power transmitter, the wireless power supply system control method further includes: S201 and S103 , which are described in detail as follows.

[0114] S201: After receiving the power supply suspension instruction, the power transmitting end sends a confirmation packet to the first unit, and suspends the power supply after maintaining the power supply for a preset time length.

[0115] S103: After receiving the confirmation packet, the first unit decodes it.

[0116] It should be noted that the wireless power supply system control method provided in this embodiment can perform the functions and uses shown in the above wireless power supply system embodiment to achieve the corresponding technical effects. For the sake of brevity, any parts not mentioned in this embodiment can be referred to the corresponding content in the above embodiment.

[0117] In summary, the embodiments of the present disclosure provide a power receiving end, a wireless power supply system, and a control method thereof. The power receiving end is configured to be coupled with the power transmitting end in the wireless power supply system. The power receiving end includes a receiving circuit and a receiving controller. The receiving controller includes a first unit and a second unit. The first unit is connected to the receiving circuit. The receiving circuit is configured to supply power to the first unit when the wireless power supply system is in a power supply state. The power supply state is that the power transmitting end transmits electric energy to the power receiving end. The second unit is configured to be connected to an additional power supply, and the additional power supply is configured to supply power to the second unit. By supplying power to the first unit and the second unit separately, the disclosed solution can ensure that the second unit continues to operate when the wireless power supply system is in a suspended power supply state, thereby avoiding the sudden cessation of the receiving controller when the power is cut off, thereby affecting the stability of the back end.

[0118] The foregoing description is merely a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present disclosure shall be included within the scope of protection of the present disclosure.

[0119] It will be apparent to those skilled in the art that the present disclosure is not limited to the details of the exemplary embodiments described above and that the present disclosure can be implemented in other specific forms without departing from the spirit or essential characteristics of the present disclosure. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present disclosure is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0120] The power suspend command is successfully received and the system is ready to enter the power suspend state.

[0121] Please refer to Figure 2, which is a schematic diagram of the signaling processing process provided by an embodiment of the present disclosure. The first unit 111 sends a power supply pause instruction to the power transmitter 20. After receiving the power supply pause instruction, the power transmitter 20 sends a confirmation packet to the first unit 111. After sending the confirmation packet, the power transmitter 20 continues to supply power for a preset time length and then pauses the power supply, thereby avoiding the situation where insufficient decoding time occurs and the confirmation packet cannot be successfully decoded.

[0122] Optionally, the preset time length may be 5 ms, with a minimum of 2 ms, to ensure that each compatible power receiving end 10 has enough time to complete decoding.

[0123] The present disclosure also provides a wireless power supply system control method, which can be, but is not limited to, configured as the wireless power supply system shown in Figure 1. Please refer to Figure 3, which is a flow chart of a wireless power supply system control method provided in the present disclosure. As shown in Figure 3, the wireless power supply system control method includes steps S101, S102, S105, and S106, which are described in detail below.

[0124] S101, the first unit sends a power supply suspension instruction to the power transmitter;

[0125] In step S102, the first unit sends the operating status information and configuration information to the second unit before the power transmitting end suspends power supply; in step S105, the second unit transmits the operating status information and configuration information back to the first unit after the power transmitting end resumes power supply; in step S106, after receiving the returned operating status information and configuration information, the first unit operates based on the operating status information and configuration information.

[0126] Optionally, the configuration information includes a timed duration for suspending power supply, and the second unit 112 includes a timing circuit configured to count the duration for which the power transmitter 20 suspends power supply. With this in mind, please refer to FIG. 4 , which is a second flow chart of a wireless power supply system control method provided in an embodiment of the present disclosure. As shown in FIG. 4 , the wireless power supply system control method further includes: S104 and S301 , which are described in detail below.

[0127] S104, when the second unit suspends power supply at the power transmitter for a period exceeding a predetermined time, the second unit sends an alarm message to the upper computer;

[0128] S301: When receiving the alarm information, the host computer sends a reset signal to the second unit to enable the second unit to perform a reset operation.

[0129] Please refer to FIG5 , which is a third flow chart of the wireless power supply system control method provided in an embodiment of the present disclosure.

[0130] As shown in FIG5 , in S101 , after the first unit sends a power supply suspension instruction to the power transmitter, the wireless power supply system control method further includes: S201 and S103 , which are described in detail as follows.

[0131] S201: After receiving the power supply suspension instruction, the power transmitting end sends a confirmation packet to the first unit, and suspends the power supply after maintaining the power supply for a preset time length.

[0132] S103: After receiving the confirmation packet, the first unit decodes it.

[0133] It should be noted that the wireless power supply system control method provided in this embodiment can perform the functions and uses shown in the above wireless power supply system embodiment to achieve the corresponding technical effects. For the sake of brevity, any parts not mentioned in this embodiment can be referred to the corresponding content in the above embodiment.

[0134] In summary, the embodiments of the present disclosure provide a power receiving end, a wireless power supply system, and a control method thereof. The power receiving end is configured to be coupled with the power transmitting end in the wireless power supply system. The power receiving end includes a receiving circuit and a receiving controller. The receiving controller includes a first unit and a second unit. The first unit is connected to the receiving circuit. The receiving circuit is configured to supply power to the first unit when the wireless power supply system is in a power supply state. The power supply state is that the power transmitting end transmits electric energy to the power receiving end. The second unit is configured to be connected to an additional power supply, and the additional power supply is configured to supply power to the second unit. By supplying power to the first unit and the second unit separately, the disclosed solution can ensure that the second unit continues to operate when the wireless power supply system is in a suspended power supply state, thereby avoiding the sudden cessation of the receiving controller when the power is cut off, thereby affecting the stability of the back end.

[0135] The foregoing description is merely a preferred embodiment of the present disclosure and is not intended to limit the present disclosure. Those skilled in the art will readily appreciate that the present disclosure is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present disclosure shall be included within the scope of protection of the present disclosure.

[0136] It will be apparent to those skilled in the art that the present disclosure is not limited to the details of the exemplary embodiments described above and that the present disclosure can be implemented in other specific forms without departing from the spirit or essential characteristics of the present disclosure. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present disclosure is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates. Industrial Applicability

[0137] The disclosed solution supplies power to the first unit and the second unit separately, so that when the wireless power supply system is in a suspended power supply state, the additional power supply can still ensure the continued operation of the second unit, avoiding the sudden cessation of operation of the receiving controller during a power outage, which affects the stability of the back end.

Claims

1. A power receiving end, characterized in that, The power receiving end is configured to be coupled with the power transmitting end in a wireless power supply system. The power receiving end includes a receiving circuit and a receiving controller, and the receiving controller includes a first unit and a second unit; The first unit is connected to the receiving circuit; The receiving circuit is configured to supply power to the first unit when the wireless power supply system is in a power supply state; Wherein, the power supply state is that the power transmitting end transmits electric energy to the power receiving end; The second unit is configured to be connected to an additional power supply, and the additional power supply is configured to supply energy to the second unit.

2. The power receiving end according to claim 1, wherein The first unit is configured to send a power supply suspension instruction to the power transmitting end, and send operation state information and configuration information to the second unit before the power transmitting end suspends power supply; The second unit is configured to send the operation state information and the configuration information back to the first unit after the power transmitting end resumes power supply; The first unit is configured to work based on the operation state information and the configuration information after receiving the operation state information and the configuration information sent back; 3. The power receiving end according to claim 2, wherein The configuration information includes the timing duration of power supply suspension, and the second unit includes a timing circuit; The timing circuit is configured to count the duration of power supply suspension of the power transmitting end.

4. The power receiving end according to claim 3, characterized in that, The second unit is further configured to send an alarm message to the host computer when the duration of power supply suspension of the power transmitting end exceeds the timing duration; The host computer is configured to send a reset signal to the second unit when receiving the alarm message, so that the second unit performs a reset operation.

5. The power receiving end according to claim 2, wherein The configuration information includes the timing duration of power supply suspension, and the second unit includes a timing circuit; The timing circuit is configured to count the duration of power supply suspension of the power transmitting end.

6. The power receiving end according to claim 5, wherein The second unit is further configured to perform a reset operation when the duration of power supply suspension of the power transmitting end exceeds the timing duration.

7. The power receiving end according to any one of claims 1-6, characterized in that, The first unit is configured to send a power supply suspension instruction to the power transmitting end; The power transmitting end is configured to send an acknowledgement packet to the first unit after receiving the power supply suspension instruction, and keep supplying power until a preset time length and then suspend power supply; The first unit is configured to decode the acknowledgement packet after receiving it.

8. The power receiving end according to any one of claims 1-7, characterized in that, The communication mode between the first unit and the power transmitting end is any one or more of load modulation communication mode, amplitude modulation communication mode, frequency modulation communication mode and phase modulation communication mode.

9. The power receiving end according to any one of claims 1-8, characterized in that, The receiving circuit includes a receiving coil, a second matcher and a rectifier cascaded in sequence; The receiving coil is configured to be coupled with the transmitting coil in the power transmitting end, and the rectifier is configured to be connected to the load module at the back end.

10. The power receiving end according to claim 9, wherein, The first unit is connected to the output end of the rectifier, and the rectifier is configured to convert the alternating current output by the second matcher into direct current and transmit it backward.

11. The power receiving end according to any one of claims 9-10, characterized in that, A regulator is arranged at the back end of the rectifier. The regulator is configured to be connected to the load module, and the regulator is connected to the first unit and accepts the control of the first unit.

12. A wireless power supply system, characterized in that, The wireless power supply system includes a power transmitting end and the power receiving end according to any one of claims 1-11, and the power transmitting end and the power receiving end are coupled to each other.

13. The wireless power supply system according to claim 12, wherein, The power transmitting end includes a transmission controller, a first matcher, an inverter, and a transmitting coil; The inverter, the first matcher, and the transmitting coil are cascaded in sequence. The inverter is configured to be connected to an external power supply, and the transmitting coil is configured to be coupled with the receiving coil in the power receiving end; The transmission controller is connected to the first matcher and / or the inverter, and the transmission controller is configured to send control instructions to the first matcher and / or the inverter.

14. A control method for a wireless power supply system, characterized in that, Applied to the wireless power supply system according to any one of claims 12-13, the method includes: A first unit sends a power supply suspension instruction to the power transmitting end; Before the power transmitting end suspends power supply, the first unit sends operation status information and configuration information to a second unit; After the power transmitting end resumes power supply, the second unit sends the operation status information and the configuration information back to the first unit; After receiving the operation status information and the configuration information sent back, the first unit operates based on the operation status information and the configuration information.

15. The method for controlling a wireless power supply system according to claim 14, wherein The configuration information includes a timed duration of power supply suspension. The second unit includes a timing circuit configured to count the duration of power supply suspension of the power transmitting end. The method further includes: When the duration of power supply suspension of the power transmitting end exceeds the timed duration, the second unit sends an alarm message to the host computer; When receiving the alarm message, the host computer sends a reset signal to the second unit to cause the second unit to perform a reset operation.

16. The method for controlling a wireless power supply system according to any one of claims 14-15, characterized in that, After the first unit sends a power supply suspension instruction to the power transmitting end, the method further includes: After receiving the power supply suspension instruction, the power transmitting end sends an acknowledgment packet to the first unit, and maintains power supply until a preset time length and then suspends power supply; after receiving the acknowledgment packet, the first unit decodes it.

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