Power supply equipment, power receiving equipment and charging method

Abstract

The embodiment of the invention provides power supply equipment, power receiving equipment and a charging method, and is applied to the field of equipment power supply. A transmission characteristic circuit is arranged in the power receiving equipment. The power supply equipment comprises a power supply interface. Wherein the power supply equipment is used for responding to the coupling of the power receiving equipment and the power supply interface, and sending a first electric signal to the transmission characteristic circuit of the power receiving equipment through the power supply interface. Receiving a second electrical signal from a transmission characteristic circuit of the powered device through the power supply interface; the second electric signal is the first electric signal transmitted by the transmission characteristic circuit. When the characteristic electric signal parameter of the second electric signal is within a preset range, sending a power supply signal to the powered device through the power supply interface; the characteristic electric signal parameters are electric signal parameters influenced by the transmission characteristics of the power receiving equipment. According to the embodiment of the invention, power supply identification negotiation between the power supply equipment and the power receiving equipment is realized based on the hardware transmission characteristic circuit, and the power supply reliability and safety are improved on the basis of reducing the device cost and the device area.

Description

Technical Field

[0001] The present application relates to the technical field of device power supply, and in particular to a power supply device, a power receiving device and a charging method. Background Art

[0002] The power supply device provides a power supply signal to the powered device to meet the normal operation of the powered device. However, the parameters of the power supply signal required by different powered devices are different. If the power supply signal is provided with incompatible parameters, it may cause damage to the power supply device and / or the powered device, and even cause damage to the device network and cause a fire. In order to ensure the safety of power supply, a dedicated power supply device can be set up to provide a power supply signal with fixed parameters for use by specific powered devices. However, in actual applications, users often use power supply devices to power different powered devices. In this case, it is very likely that the power supply signal actually provided by the power supply device will not match the parameters of the power supply signal required by a certain powered device, causing power supply safety problems. When a power supply device includes multiple power supply interfaces and needs to power multiple powered devices, the probability of power supply safety problems will be greater.

[0003] One solution is to set a power manager for each power supply interface and set a corresponding power manager in the powered device. Through the interaction between the power managers, the authenticated powered device is authenticated and the power supply parameters are negotiated, thereby ensuring the safety and reliability of the power supply. However, this method will increase the device cost and device area overhead of the device, especially when the power supply device includes multiple power supply interfaces, each power supply interface needs to be set up with a corresponding power manager, which will bring greater device cost and device area overhead. Summary of the invention

[0004] The embodiments of the present application provide a power supply device, a powered device, and a charging method, which reduce the device cost and device area overhead of the device while ensuring the safety and reliability of power supply.

[0005] To achieve the above objectives, the embodiments of the present application adopt the following technical solutions:

[0006] In a first aspect, a power supply device is provided, the power supply device comprising a power supply interface. The power supply device is used to: in response to a power receiving device being coupled to the power supply interface, send a first electrical signal to the power receiving device through the power supply interface. Receive a second electrical signal from the power receiving device through the power supply interface. The second electrical signal is the first electrical signal after being transmitted by the power receiving device. When a characteristic electrical signal parameter of the second electrical signal is within a preset range, send a power supply signal to the power receiving device through the power supply interface. The characteristic electrical signal parameter is an electrical signal parameter affected by the transmission characteristics of the power receiving device.

[0007] In an embodiment of the present application, the powered device changes the characteristic electrical signal parameters of the first electrical signal from the characteristics, that is, the characteristic electrical signal parameters of the first electrical signal are changed within a predictable range. The power supply device sends a first electrical signal to the powered device, and receives a second electrical signal obtained after transmission by the powered device from the powered device. When the characteristic electrical signal parameters of the first electrical signal are known, by judging whether the characteristic electrical signal parameters of the second electrical signal are within a preset range, it can be determined whether the powered device is a certified powered device. If the characteristic electrical signal parameters of the second electrical signal are within the preset range, it can be determined that the corresponding powered device is a certified powered device, and a power supply signal can be provided to the powered device. Through the above implementation, the power supply identification negotiation between the powered device and the power supply device can be realized in a hardware-based manner, avoiding the use of a power manager to perform power supply identification negotiation between the powered device and the power supply device, and achieving the improvement of power supply safety and reliability on the basis of reducing device cost and device area overhead.

[0008] In a possible implementation, the characteristic electrical signal parameters of the second electrical signal are also used to indicate the power receiving parameters of the powered device. The power supply device is also used to: determine the size of the power supply parameter of the power supply signal according to the characteristic electrical signal parameters of the second electrical signal. In an embodiment of the present application, the transmission characteristics of the powered device can be designed so that the change of the characteristic electrical signal parameters during the transmission of the first electrical signal through the powered device can also be used to indicate the power receiving parameters of the powered device. The power supply device determines the power receiving parameters of the powered device according to the characteristic electrical signal parameters of the second electrical signal, and generates a power supply signal corresponding to the power supply parameters. The above implementation can improve the power supply matching degree between the power supply signal and the powered devices in different application scenarios or different models, so as to improve the working efficiency of the powered device and improve the operational reliability and safety.

[0009] In a possible implementation, the characteristic electrical signal parameter includes at least one of the following: a phase change characteristic, an amplitude change characteristic, and a frequency change characteristic. In the embodiment of the present application, during the transmission of the first electrical signal in the powered device, the device identification and / or powered parameters of the powered device can be indicated according to the changed parameter characteristics by changing at least one of the phase, amplitude, or frequency of the first electrical signal. According to the actual application scenario requirements, the corresponding characteristic parameters can be selected.

[0010] In one possible implementation, the characteristic electrical signal parameter includes at least one of a time-varying characteristic or a noise characteristic. In an embodiment of the present application, in addition to changing the signal characteristics of the first electrical signal, the transmission time of the first electrical signal may also be changed. Or the distinguishing characteristics generated by the transmission time during the transmission of the first electrical signal in the powered device are detected to realize the identification of the device identification and / or the powered parameters. In addition, some interfering noise signals may be added to the first electrical signal to realize the identification of the device identification and / or the powered parameters through the interfering noise signals. The above implementation can increase the accuracy and difference of the power supply identification negotiation, and at the same time, it can also enable the method to adapt to different application scenarios with more identification methods.

[0011] In a possible implementation, the power supply device includes multiple power supply interfaces; the multiple power supply interfaces are used to couple with corresponding multiple powered devices. In an embodiment of the present application, power can be supplied to multiple powered devices by one power supply device. At this time, power supply identification negotiation between the power supply device and multiple powered devices is implemented based on the hardware transmission characteristics of the powered device, which can reduce the number of power manager settings. Under the above implementation, the power supply reliability and safety in the application scenario where one power supply device supplies power to multiple powered devices can be improved on the basis of reducing device cost and device area overhead.

[0012] In a possible implementation, the power supply interface includes a power supply pin and a detection pin. The power supply device sends a power supply signal to the powered device through the power supply pin; the power supply device receives a second electrical signal from the powered device through the detection pin. In the embodiment of the present application, the power supply device can transmit the power supply signal and the second electrical signal through different pins to ensure the processing accuracy of the power supply identification negotiation.

[0013] In a possible implementation, the power supply device sends a first electrical signal to the powered device through a power supply pin. In an embodiment of the present application, the power supply pin can be reused to transmit the power supply signal and the first electrical signal. The number of pin settings is reduced, and the integration is improved. In addition, in some scenarios, the existing interface can be directly used as the power supply interface without modifying the interface. In other scenarios, it is only necessary to add a detection pin to the existing interface, reducing the number of new pins.

[0014] In a possible implementation, the power supply device further includes an excitation pin, and the power supply device sends a first electrical signal to the powered device via the excitation pin. In the embodiment of the present application, different pins can be used to transmit the power supply signal and the first electrical signal respectively. This increases the reliability of different signal transmissions and reduces the amount of data for signal processing of the second electrical signal.

[0015] In a possible implementation, the power supply device further includes an excitation signal source, a control circuit and a power supply. The control circuit is coupled to the power supply interface and the power supply respectively; the power supply is coupled to the power supply interface. Wherein: the excitation signal source is used to: send a first electrical signal to the powered device through the power supply interface. The control circuit is used to: input a second electrical signal from the power supply interface; when the characteristic electrical signal parameter of the second electrical signal is within a preset range, output a first control signal to the power supply through the power supply interface; the first control signal is used to indicate power supply to the powered device. The power supply is used to: send a power supply signal to the powered device through the power supply interface according to the first control signal. In an embodiment of the present application, a determined first electrical signal can be provided by an excitation signal source. The second electrical signal is processed by the control circuit, and the power supply identification negotiation with the powered device is completed, and then the first control signal is output to the power supply according to the result of the power supply identification negotiation. The power supply is controlled to output a power supply signal by the first control signal. In addition, the power supply parameters of the power supply signal output by the power supply can also be controlled by the first control signal.

[0016] In a possible implementation, the control circuit is a power manager. In the embodiment of the present application, when the power manager is used as the control circuit, compared with using other processors as the control circuit, the data processing amount can be reduced and the efficiency of power supply identification negotiation can be improved.

[0017] In a second aspect, an embodiment of the present application further provides a powered device, which includes a transmission characteristic circuit and a powered interface. The input end of the transmission characteristic circuit and the output end of the transmission characteristic circuit are coupled to the powered interface respectively. The powered device is used to: based on the input end of the transmission characteristic circuit, receive a first electrical signal from the power supply device through the powered interface; and transmit the first electrical signal through the transmission characteristic circuit. Based on the output end of the transmission characteristic circuit, send a second electrical signal to the power supply device through the powered interface; the second electrical signal is the first electrical signal after being transmitted by the transmission characteristic circuit; the transmission characteristic of the transmission characteristic circuit is used to change the characteristic electrical signal parameter of the first electrical signal to obtain the second electrical signal. A power supply signal is received from the powered device through the powered interface. In an embodiment of the present application, by setting a transmission characteristic circuit in the powered device, the transmission characteristic circuit transmits the first electrical signal and outputs the second electrical signal. By designing the transmission characteristic of the transmission characteristic circuit, the characteristic electrical signal parameter of the first electrical signal is modified to obtain the second electrical signal. The characteristic electrical signal parameter of the second electrical signal can be used to indicate the device identification of the powered device. The device identification of the powered device is used to indicate whether the powered device is an authenticated powered device. When the power supply device receives the second electrical signal, it determines that the powered device is an authenticated powered device according to the second electrical signal, and provides a power supply signal to the powered device. The powered device can then receive the power supply signal to perform normal operation.

[0018] In a possible implementation manner, the transmission characteristic of the transmission characteristic circuit is also used to indicate the power receiving parameters of the powered device.

[0019] In a possible implementation manner, the characteristic electrical signal parameter includes at least one of the following: a phase change characteristic, an amplitude change characteristic, and a frequency change characteristic.

[0020] In a possible implementation manner, the characteristic electrical signal parameter includes at least one of a time variation characteristic or a noise characteristic.

[0021] In a possible implementation, the transmission characteristic circuit includes at least one of the following devices: an equivalent capacitor, an equivalent resistor, and an equivalent inductor. In the embodiment of the present application, the transmission characteristics of the transmission characteristic circuit can be designed by devices such as capacitors, resistors, or inductors. Other devices can also be used to equivalently form capacitors, resistors, or inductors. For example, a capacitor structure is equivalently obtained by using metal plates, metal wires, etc. in the device. A resistive load, an inductive load, etc. are equivalently obtained by using cables in the device. Transmission lines, microstrip lines, impedance transformation lines, etc. are used to equivalently obtain the impedance characteristics and transmission characteristics of capacitors, resistors, or inductors.

[0022] In a possible implementation, the power receiving interface includes a power receiving pin and a feedback pin; the powered device receives a power supply signal from the power supply device via the power receiving pin; and the powered device sends a second electrical signal to the powered device via the feedback pin.

[0023] In a possible implementation manner, the powered device receives the first electrical signal from the power supply device through the powered pin.

[0024] In a possible implementation manner, the powered device further includes an excitation pin, and the powered device receives the first electrical signal from the power supply device through the excitation pin.

[0025] In the third aspect, the embodiment of the present application also provides a charging method based on a power supply device. The method includes: sending a first electrical signal to a powered device; receiving a second electrical signal from the powered device; the second electrical signal is the first electrical signal after being transmitted by the powered device; when the characteristic electrical signal parameter of the second electrical signal is within a preset range, sending a power supply signal to the powered device; the characteristic electrical signal parameter is a characteristic electrical signal parameter affected by the transmission characteristics of the powered device.

[0026] In a possible implementation, the characteristic electrical signal parameter of the second electrical signal is also used to indicate the power receiving parameter of the powered device. The method further includes: determining the power supply parameter size of the power supply signal according to the characteristic electrical signal parameter of the second electrical signal.

[0027] In a possible implementation manner, the characteristic electrical signal parameter includes at least one of the following: a phase change characteristic, an amplitude change characteristic, and a frequency change characteristic.

[0028] In a possible implementation manner, the characteristic electrical signal parameter includes at least one of a time variation characteristic or a noise characteristic.

[0029] In a possible implementation, the sending of the power supply signal to the powered device includes: obtaining a first control signal according to the second electrical signal; the first control signal is used to instruct to supply power to the powered device. According to the first control signal, sending the power supply signal to the powered device.

[0030] In a fourth aspect, an embodiment of the present application provides a charging method based on a power receiving device; the power receiving device includes a transmission characteristic circuit. The method includes: receiving a first electrical signal, transmitting the first electrical signal through the transmission characteristic circuit, and sending a second electrical signal to a power supply device; the second electrical signal is the first electrical signal after being transmitted by the transmission characteristic circuit; the transmission characteristics of the transmission characteristic circuit are used to change the characteristic electrical signal parameters of the first electrical signal to obtain the second electrical signal. A power supply signal is received from the power supply device.

[0031] In a possible implementation manner, the transmission characteristic of the transmission characteristic circuit is also used to indicate the power receiving parameters of the powered device.

[0032] In a possible implementation manner, the characteristic electrical signal parameter includes at least one of the following: a phase change characteristic, an amplitude change characteristic, and a frequency change characteristic.

[0033] In a possible implementation manner, the characteristic electrical signal parameters include time variation characteristics and noise characteristics.

[0034] In a fifth aspect, an embodiment of the present application further provides a device network, which includes a power supply device and a powered device; the power supply device includes a power supply interface; the powered device includes a powered interface and a transmission characteristic circuit; the power supply interface is coupled to the input end and the output end of the transmission characteristic circuit through the powered interface. Wherein: the power supply device is used to: in response to the coupling of the powered interface with the power supply interface, send a first electrical signal to the input end of the transmission characteristic circuit through the power supply interface. Receive a second electrical signal from the output end of the transmission characteristic circuit through the power supply interface; the second electrical signal is the first electrical signal after being transmitted by the transmission characteristic circuit. When the characteristic electrical signal parameter of the second electrical signal is within a preset range, the power supply signal is sent to the powered device through the power supply interface; the characteristic electrical signal parameter is an electrical signal parameter affected by the transmission characteristics of the transmission characteristic circuit.

[0035] In a sixth aspect, an embodiment of the present application further provides a computer-readable storage medium, which includes instructions; when the instructions are executed on the power supply device as described in the first aspect above, the power supply device performs the following charging method: sending a first electrical signal to a powered device. Receive a second electrical signal from the powered device; the second electrical signal is the first electrical signal after being transmitted by the powered device. When the characteristic electrical signal parameter of the second electrical signal is within a preset range, sending a power supply signal to the powered device; the characteristic electrical signal parameter is a characteristic electrical signal parameter affected by the transmission characteristics of the powered device.

[0036] Regarding the technical principles and beneficial effects of the second, third, fourth, fifth and sixth aspects, reference may be made to the relevant statements of the first aspect, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 A schematic diagram of a first device network structure provided in an embodiment of the present application;

[0038] Figure 2 A schematic diagram of a second device network structure provided in an embodiment of the present application Figure 1 ;

[0039] Figure 3 A schematic diagram of the structure of a first power supply device and a first power receiving device provided in an embodiment of the present application;

[0040] Figure 4 A schematic diagram of the structure of a second power supply device and a second power receiving device provided in an embodiment of the present application;

[0041] Figure 5 A schematic diagram of the structure of a third power supply device and a third power receiving device provided in an embodiment of the present application Figure 1 ;

[0042] Figure 6 A schematic diagram of a capacitance-based transmission characteristic circuit provided in an embodiment of the present application;

[0043] Figure 7 A schematic diagram of another structure of a third power supply device and a third power receiving device provided in an embodiment of the present application Figure 2 ;

[0044] Figure 8 A schematic diagram of the structure of another third power supply device and a third power receiving device provided in an embodiment of the present application Figure 3 ;

[0045] Fig. 9 Another structural diagram of the second device network provided in the embodiment of the present application Figure 2 ;

[0046] Fig.10 A schematic diagram of another second device networking structure provided in an embodiment of the present application Figure 3 ;

[0047] Fig.11 A schematic diagram of another second device networking structure provided in an embodiment of the present application Figure 4 ;

[0048] Fig.12 A schematic diagram of a charging method provided in an embodiment of the present application;

[0049] Fig.13 A flowchart of another charging method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0050] It should be noted that the terms "first", "second", etc. involved in the embodiments of the present application are only used to distinguish features of the same type and cannot be understood as indicating relative importance, quantity, order, etc.

[0051] The terms "exemplary" or "for example" and the like in the embodiments of the present application are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of the terms "exemplary" or "for example" is intended to present the related concepts in a specific way.

[0052] The terms "coupling" and "connection" involved in the embodiments of the present application should be understood in a broad sense. For example, they may refer to a direct physical connection, or an indirect connection achieved through electronic devices, such as a connection achieved through resistors, inductors, capacitors or other electronic devices.

[0053] An embodiment of the present application provides a device network, which includes a power supply device and a powered device.

[0054] In some possible implementations, when the device network includes multiple powered devices, the device network may be a first device network using a chain structure. Figure 1As shown, in the first device network 1000A of the chain structure, a plurality of powered devices 200 are arranged. The plurality of powered devices 200 are cascade-coupled in a chain. The power supply device 100 supplies power to the first-stage powered device 200 in the chain structure. Among the plurality of cascaded powered devices 200, the powered device 200 of the previous stage supplies power to the powered device 200 of the next stage. However, under this embodiment, if one of the plurality of cascaded powered devices 200 fails, the normal operation of the powered device 200 of the next stage will be affected. Therefore, the operation reliability and safety of the first device network 1000A of the chain structure are not high, and the independent operation between the plurality of powered devices 200 cannot be guaranteed.

[0055] In some possible implementations, when the device network includes multiple powered devices, the device network may be a second device network using a star structure. Figure 2 As shown, in the second device network 1000B of the star structure, multiple powered devices 200 are provided. The power supply device 100 includes multiple power supply interfaces, and the power supply device 100 is coupled to the multiple powered devices 200 through the multiple power supply interfaces to provide power supply signals to the multiple powered devices 200.

[0056] In some possible implementations, Figure 1 and Figure 2 In the embodiment shown, the power supply device 100 is a first power supply device that does not include a power manager, and the powered device 200 is a first powered device that does not include a power manager. Figure 3 As shown, the first power supply device 100A includes a plurality of first power supply interfaces 110A and a first power supply 120A. The first power supply 120A is coupled to the plurality of first power supply interfaces 110A respectively. The first powered device 200A includes a first powered interface 210A and at least one first powered device 220A. At least one powered device 220A is coupled to the first powered interface 210A. Each first powered device 200A is coupled to a first powered interface 110A of the first power supply device 100A via the first powered interface 210A. In an embodiment of the present application, the first power supply 120A of the first power supply device 100A generates a power supply signal based on a fixed power supply parameter, and transmits the power supply signal to the first powered device 120A via the corresponding first power supply interface 110A. After receiving the power supply signal, the first powered interface 210A in the first powered device 120A transmits the power supply signal to the corresponding one or more first powered devices 220A, so that the first powered device 220A can receive power and work. In the example Figure 3In the illustrated embodiment, matching power supply parameters are designed for the certified powered device 200, and the power supply signal with the designed power supply parameters is outputted through the first power supply 120A to supply power to the certified powered device 200. However, this solution is only applicable when all first powered devices 200A are certified powered devices 200. When the first powered device 200A coupled to the first power supply interface 110A is a non-certified powered device 200, the power supply parameters of the power supply signal outputted by the first power supply interface 110A may not match the non-certified powered device 200, and there may be power supply safety problems, such as sparks and arcs in the power supply line, or excessive power supply signals may damage the non-certified powered device 200, or the non-certified powered device 200 has a large power supply drive requirement, thereby increasing the voltage or current of the power supply signal, causing damage to the first power supply 120A of the first power supply device 100A, etc.

[0057] In order to solve the Figure 3 In order to solve the power supply safety problem caused by direct power supply in the embodiment shown in the figure, the power supply device 100 may be a second power supply device including a power manager, and the powered device 200 may be a second powered device including a power manager. Figure 4As shown, the second power supply device 100B includes a second power supply interface 110B, a second power supply 120B and a first power manager 130B. The first power manager 130B is coupled to the second power supply interface 110B and the second power supply 120B respectively. The second powered device 200B includes a second powered interface 210B, at least one second power receiver 220B and a second power manager 230B. Among them, when the second powered device 200B is coupled with the second power supply interface 210B of the second power supply device 100B through the second powered interface 210B, the first power manager 130B starts to interact with the second power manager 230B for device identification to identify whether the second powered device 200B is an authenticated powered device. After confirming that the second powered device 200B is an authenticated powered device, the first power manager 130B can control the second power supply 120B to generate a power supply signal that matches the authenticated powered device. The embodiment of the present application realizes power supply negotiation and identification between the second power supply device 100B and the second powered device 200B based on the relevant power supply protocol at the software level by setting a first power manager 130B in the second power supply device 100B and correspondingly setting a second power manager 230B in the second powered device 200B, thereby avoiding the power supply safety problem caused by powering a non-certified powered device. However, this implementation method increases the device cost of the second power supply device 100B and the second powered device 200B, and the power manager will also occupy a certain device area overhead. And when multiple second power supply interfaces 110B are set in the second power supply device 100B to meet the scenario of powering multiple second powered devices 200B, in order to ensure the stability of each second powered device 200B, it is necessary to set multiple first power managers 130B to respectively perform power supply negotiation and identification with different second powered devices 200B, which will make the device cost and device area overhead even greater in this case.

[0058] In order to improve the safety and reliability of power supply without significantly increasing the device cost and device area overhead, in some possible implementations, the power supply device 100 may be a third power supply device that implements power supply negotiation identification based on the hardware transmission characteristics of the powered device 200, and the powered device 200 may be a third powered device that implements power supply negotiation identification based on the hardware transmission characteristics. Figure 5 As shown, the third power supply device 100C includes a third power supply interface 110C. The third powered device 200C includes a third powered interface 210C, at least one third powered receiver 220C and a transmission characteristic circuit 230C. The third powered interface 210C is coupled to at least one third powered receiver 220C, an input end of the transmission characteristic circuit 230C and an output end of the transmission characteristic circuit 230C respectively. Wherein:

[0059] The third power supply device 100C is configured to send a first electrical signal to the third powered device 200C through the third power supply interface 110C in response to the third powered device 200C being coupled to the third power supply interface 110C.

[0060] The third powered device 200C is used to: based on the input end of the transmission characteristic circuit 230C, receive the first electrical signal from the third power supply device 100C through the third power receiving interface 210C; transmit the first electrical signal through the transmission characteristic circuit 230C. Based on the output end of the transmission characteristic circuit 230C, send the second electrical signal to the third power supply device 100C through the third power receiving interface 210C. The second electrical signal is the first electrical signal after being transmitted by the transmission characteristic circuit 230C. The transmission characteristics of the transmission characteristic circuit 230C are used to change the characteristic electrical signal parameters of the first electrical signal to obtain the second electrical signal.

[0061] The third power supply device 100C is further configured to receive a second electrical signal from the third powered device 200C via the third power interface 110C and send a power supply signal to the third powered device 200C via the third power interface 110C when the characteristic electrical signal parameter of the second electrical signal is within a preset range.

[0062] The third powered device 200C is further configured to receive a power supply signal from the third powered device 100C via the third powered interface 210C.

[0063] In the present application, for example Figure 5In the illustrated embodiment, a transmission characteristic circuit 230C is provided in the third powered device 200C. After the third power supply interface 110C of the third power supply device 100C and the third power receiving interface 210C of the third powered device 200C are coupled, the third power supply device 100C sends a first electrical signal to the input end of the transmission characteristic circuit 230C of the third powered device 200C through the third power supply interface 110C. After the first electrical signal is transmitted by the transmission characteristic circuit 230C, the second electrical signal affected by the transmission characteristic circuit 230C is fed back to the third power supply device 100C through the output end of the transmission characteristic circuit 230C and the third power receiving interface 210C. In this process, because the transmission characteristic circuit 230C affects the characteristic electrical signal parameters of the first electrical signal, the second electrical signal is obtained. Therefore, for the certified third powered device 200C, a transmission characteristic circuit 230C of a corresponding model is designed, and the designed transmission characteristic circuit 230C can cause changes within a predictable range to the characteristic electrical signal parameters of the first electrical signal. The third power supply device 100C receives the second electrical signal obtained after being transmitted by the transmission characteristic circuit 230C. When the characteristic electrical signal parameters of the first electrical signal are known, by judging whether the characteristic electrical signal parameters of the second electrical signal are within a preset range, it can be determined whether the third powered device 200C is a certified powered device. If the characteristic electrical signal parameters of the second electrical signal are within the preset range, it can be determined that the corresponding third powered device 200C is a certified powered device, and the third power supply device 100C can provide a power supply signal to it. The device cost and device area overhead of the transmission characteristic circuit 230C are much lower than the device cost and device area overhead of the power manager. By setting the transmission characteristic circuit 230C, the embodiment of the present application can reduce the settings of the relevant power manager in the powered device and reduce the device cost. The embodiment of the present application is based on Figure 5 The illustrated embodiment can improve the safety and reliability of power supply while reducing device cost and device area.

[0064] In some possible implementations, the transmission characteristics of the transmission characteristic circuit 230C are also used to indicate the power receiving parameters of the third power receiving device 200C. At this time, the characteristic electrical signal parameters of the second electrical signal are also used to indicate the power receiving parameters of the third power receiving device 200C. The third power supply device 100C is also used to: determine the power supply parameter size of the power supply signal according to the characteristic electrical signal parameters of the second electrical signal. In the embodiment of the present application, by designing the transmission characteristics of the transmission characteristic circuit 230C, it is also possible to use different values ​​of the characteristic electrical signal parameters of the second electrical signal to correspond to different power receiving parameters of the third power receiving device 200C. The third power supply device 100C determines the power receiving parameters of the third power receiving device 200C according to the values ​​of the characteristic electrical signal parameters corresponding to the actually received second electrical signal, and outputs a power supply signal corresponding to the power supply parameter size according to the power receiving parameters, so that the output power supply signal can adapt to the third power receiving device 200C of different models or application scenarios.

[0065] In some possible implementations, the characteristic electrical signal parameter includes at least one of the following: a phase change characteristic, an amplitude change characteristic, and a frequency change characteristic.

[0066] In some possible implementations, the characteristic electrical signal parameter includes at least one of a time variation characteristic or a noise characteristic.

[0067] In some possible implementations, the transmission characteristic circuit 230C includes at least one of the following devices: an equivalent capacitor, an equivalent resistor, and an equivalent inductor. In the embodiment of the present application, capacitors, resistors, inductors, and other devices that can be equivalent to capacitors, resistors, and inductors can be used to design the transmission characteristic circuit 230C, so that the transmission characteristic circuit 230C can change the above-mentioned characteristic electrical signal parameters.

[0068] For example, Figure 6 As shown, the transmission characteristic circuit 230C includes a capacitor as an example. Figure 6 In Figure (a), multiple grounded capacitors are connected on the transmission path to increase the phase of the first electrical signal and obtain a second electrical signal with a larger phase. Figure 6 In Figure (b), multiple capacitors connected in parallel can reduce the phase of the first electrical signal to obtain a second electrical signal with a smaller phase. Figure 6 The capacitors in Figure (a) and Figure (b) can also be combined to adjust the phase of the first electrical signal.

[0069] Exemplarily, multiple resistors are connected in series and / or in parallel to obtain load circuits with different loads, thereby realizing functions such as voltage division, etc., and generating corresponding amplitude changes, frequency responses, etc. for the first electrical signal.

[0070] Exemplarily, an inductor is provided in the transmission characteristic circuit 230C, and the inductor may be a result of series connection and / or parallel connection, and may generate a corresponding frequency response, time delay, etc. for the first electrical signal.

[0071] Exemplarily, in the transmission characteristic circuit 230C, devices such as capacitors, resistors or inductors may be used. Other devices may also be used to equivalently form capacitors, resistors or inductors. For example, a metal plate, a metal wire, etc. in a device may be used to equivalently obtain a capacitor structure. A cable in a device may be used to equivalently obtain a resistive load, an inductive load, etc. A transmission line, a microstrip line, an impedance transformation line, etc. may be used to equivalently obtain the impedance characteristics and transmission characteristics of a capacitor, resistor or inductor.

[0072] In some examples, the third power receiver 220C may be a power storage device in the third power receiving device 200C. In some examples, the third power receiver 220C may be a working device in the third power receiving device 200C, such as a data processing device, a control device, or a detection device.

[0073] In some possible implementations, such as Figure 7 As shown, the third power supply interface 110C includes a power supply pin 111C and a detection pin 112C. The third power supply device 100C sends a power supply signal to the third powered device 200C through the power supply pin 111C. The third power supply device 100C receives a second electrical signal from the third powered device 200C through the detection pin 112C. The third powered receiving interface 210C of the third powered receiving interface 210C includes a power receiving pin 211C and a feedback pin 212C. The third powered receiving device 200C receives a power supply signal from the third power supply device 100C through the power receiving pin 211C. The third powered receiving device 200C sends a second electrical signal to the third powered device 200C through the feedback pin 212C. In the embodiment of the present application, the third power supply device 100C and the third powered device 200C transmit the power supply signal through the power supply pin 111C and the power receiving pin 211C. The third power supply device 100C and the third power receiving device 200C transmit power supply signals via the detection pin 112C and the feedback pin 212C.

[0074] In some possible implementations, the third power supply device 100C and the third powered device 200C may reuse the transmission path of the power supply signal to transmit the first electrical signal. Figure 7As shown, the third power supply device 100C sends a first electrical signal to the third power receiving device 200C through the power supply pin 111C. The third power receiving device 200C receives the first electrical signal from the third power supply device 100C through the power receiving pin 211C. In some examples, the power supply signal and the first electrical signal can be transmitted at different times. In some examples, the power supply signal and the first electrical signal can be signals of different frequencies, and the two signals are transmitted on the same transmission path, but are independent of each other and do not interfere with each other. For example, when the voltage of the power supply signal is 220V, the frequency of the power supply signal is 50Hz. The first electrical signal can be a signal greater than 50Hz, for example, a signal with a frequency of several thousand Hz or higher. The two signals are transmitted to the third power receiving device 200C through the power supply pin 111C and the power receiving pin 211C, and then the transmission characteristic circuit 230C inside the third power receiving device 200C receives the first electrical signal, and the third power receiving device 220C inside the third power receiving device 200C receives the power supply signal.

[0075] In some possible implementations, the third power supply device 100C and the third powered device 200C use different transmission paths to transmit the power supply signal and the first electrical signal respectively. Figure 8 As shown, the third power supply device 100C also includes a first excitation pin 113C, and the third power supply device 100C sends a first electrical signal to the third powered device 200C through the first excitation pin 113C. The third powered interface 210C of the third powered device 200C also includes a second excitation pin 213C, and the third powered device 200C receives the first electrical signal from the third power supply device 100C through the second excitation pin 213C. In an embodiment of the present application, different transmission paths are used to transmit the power supply signal and the first electrical signal respectively, and the transmission of the power supply signal and the first electrical signal is completely independent. In actual applications, the power supply pin 111C, the detection pin 112C and the first excitation pin 113C can be integrated on a wiring terminal in the third power supply interface 110C, and transmitted by a cable including multiple leads. The power supply pin 111C, the detection pin 112C and the first excitation pin 113C can also be set on different wiring terminals in the third power supply interface 110C, and transmitted separately by multiple independent cables.

[0076] In some possible implementations, such as Figure 7 and Figure 8As shown, the third power supply device 100C also includes a third power supply 120C, an excitation signal source 130C and a control circuit 140C. The control circuit 140C is coupled to the third power supply interface 110C and the third power supply 120C respectively. The third power supply 120C is coupled to the third power supply interface 110C. Wherein: the excitation signal source 130C is used to: send a first electrical signal to the third powered device 200C through the third power supply interface 110C. The control circuit 140C is used to: input a second electrical signal from the third power supply interface 110C. When the characteristic electrical signal parameter of the second electrical signal is within a preset range, a first control signal is output to the third power supply 120C through the third power supply interface 110C; the first control signal is used to indicate that power is supplied to the third powered device 200C. The third power supply 120C is used to: send a power supply signal to the third powered device 200C through the third power supply interface 110C according to the first control signal.

[0077] For example, Figure 7 As shown, the third power supply 120C provides a power supply signal to at least one third power receiving device 120C in the third power receiving device 200C through the power supply pin 111C. The excitation signal source 130C sends a first electrical signal to the input end of the transmission characteristic circuit 230C in the third power receiving device 200C through the power supply pin 111C. The control circuit 140C receives a second electrical signal from the third power receiving device 200C through the detection pin 112C. In some examples, when the characteristic electrical signal parameter of the second electrical signal is within a preset range, the control circuit 140C outputs a first control signal to the third power supply 120C, and the first control signal is used to instruct the third power supply 120C to supply power to the third power receiving device 200C. In some examples, when the characteristic electrical signal parameter of the second electrical signal is also used to indicate the power receiving parameter of the third powered device 200C, the control circuit 140C outputs a first control signal to the third power supply 120C, the first control signal is used to instruct the third power supply 120C to supply power to the third powered device 200C, and at the same time, the first control signal is also used to indicate the power supply parameter of the power supply signal. The third power supply 120C outputs a power supply signal of the corresponding power supply parameter (or called the power receiving parameter) to the corresponding power supply pin 111C according to the first control signal to supply power to the third powered device 200C.

[0078] In some examples, the control circuit 140C may be a processor. In some examples, the control circuit 140C may be a power management chip. In an embodiment of the present application, a processor for controlling may be used as the control circuit 140C to process the second electrical signal and generate a related first control signal to control the generation of the power supply signal. However, the resolution of the parameters of the characteristic electrical signal of the second electrical signal in the processor requires a certain amount of data, and as the complexity of the characteristic electrical signal parameters increases, the amount of data processing will also increase. When a power management chip is used as the control circuit 140C, one or more power management chips are integrated in a general power supply device, and the power management chip can be directly used to implement the above-mentioned control function without the need for additional control devices. Moreover, the power management chip itself can parse and obtain some electrical signal parameters, and the power management chip is used to parse the electrical signal parameters, and the amount of data processed is small.

[0079] In some possible implementations, such as Fig. 9 As shown, the second device network 1000B includes multiple third powered devices 200C. The third power supply device 100C includes multiple third power supply interfaces 110C; the multiple third power supply interfaces 110C are used to couple with the corresponding multiple third powered devices 200C. In the embodiment of the present application, when the third power supply device 100C includes multiple third power supply interfaces 110C, the multiple third powered devices 200C in the second device network 1000B use the transmission characteristic circuit 230C to perform power supply negotiation identification, etc. In this case, the multiple third powered devices 200C in the second device network 1000B do not need to set up related power managers, which can save more device costs and device area expenses.

[0080] In some examples, when the second device network 1000B is applied to some more sophisticated or important scenarios, or when the power supply requirements of multiple third powered devices 200C are large, the third power supply device 100C can set a corresponding excitation signal source 130C and a control circuit 140C for each third power supply interface 110C to ensure the stability and reliability of power supply to each third powered device 200C as much as possible.

[0081] In some examples, such as Fig.10As shown, an excitation signal source 130C can be used to provide a first electrical signal to multiple different third power supply interfaces 110C respectively. One or more control circuits 140C are used to receive corresponding second electrical signals from multiple third power supply interfaces 110C. In an embodiment of the present application, when the transmission feature circuit 230C is used in the third powered device 200C to implement power supply identification negotiation, etc., the control circuit 140C does not need to negotiate and interact with the power supply protocol at the software level, and only needs to parse the second electrical signal. At this time, one or more control circuits 140C can be used to process multiple second electrical signals without having to configure a corresponding power manager for each powered device. In this way, by parsing the second electrical signals received by more than two third power supply interfaces 110C through a control circuit 140C, the reliability and safety of the power supply can be improved on the basis of reducing the device cost and device area overhead of the third power supply device 100C.

[0082] In some examples, such as Fig.11As shown, an excitation signal source 130C can be used to provide a first electrical signal to a third power supply interface 110C. The third power supply interface 110C is coupled to multiple third powered devices 200C through a shunt connector X1. The transmission characteristic circuits 230C of multiple third powered devices 200C change the characteristic electrical signal parameters of the first electrical signal in a consistent manner. When the first excitation pin 113C or the power supply pin 111C of the third powered interface 110C sends the first electrical signal to the third powered interfaces 210C of multiple third powered devices 200C through the shunt connector X1. After receiving the first electrical signal, the transmission characteristic circuit 230C of each third powered device 200C sends the corresponding second electrical signal to the shunt connector X1 through the feedback pin 212C. The shunt connector X1 transmits multiple second electrical signals to the detection pin 112C of the third power supply device 100C. The control circuit 140C determines whether to output the power supply signal based on whether the characteristic electrical signal parameters of the electrical signal after the multiple second electrical signals are combined are within a preset range. In an embodiment of the present application, multiple authenticated third powered devices 200C can receive power through the same third power supply interface 110C. When one or more of the multiple third powered devices 200C fail, the failed third powered device 200C can automatically stop receiving power. However, because the transmission characteristic circuit 230C of the failed third powered device 200C is a hardware circuit, it is not affected by the control plane. When the third powered device 200C fails, and when the third powered device 200C is powered off, the corresponding transmission characteristic circuit 230C can still receive the first electrical signal sent by the third power supply device 100C and feed back the second electrical signal. In this case, multiple third powered devices 200C are coupled to the same third power supply interface 110C, and the failure of any third powered device 200C will not affect the power supply identification and negotiation processing of the third power supply device 100C, nor will it affect the normal operation of other third powered devices 200C. In the embodiment of the present application, when the number of the third power supply interface 110C, the excitation signal source 130C and the control circuit 140C is reduced, when multiple certified third powered devices 200C reuse the same third power supply interface 110C, when a certain certified third powered device 200C fails, it will not affect the operation of other normal certified third powered devices 200C. This ensures the reliability and safety of power supply while reducing the device cost and device area overhead of the third power supply device 100C.

[0083] In some possible implementations, the first device network 1000A or the second device network 1000B may be a base station communication network, a laboratory equipment network, a large workstation network, a smart home network, a terminal device network, etc.

[0084] Exemplarily, when the first device network 1000A or the second device network 1000B is a base station communication network, the third power supply device 100C can be a dedicated power supply device. The third powered device 200C can be a transmission and reception point (TRP), a remote radio unit (RRU), an active antenna unit (AAU), or a baseband unit (BBU) (also called a digital unit (DU)) of a separate base station, a broadband network gateway (BNG), a converged switch, a non-3GPP access device, a relay station or an access point, etc.

[0085] For example, when the first device network 1000A or the second device network 1000B is a smart home network, the third power supply device 100C may be a dedicated power supply device or a smart home management device. The third powered device 200C may be a router, a computer, a refrigerator, a display, etc.

[0086] Exemplarily, when the first device network 1000A or the second device network 1000B is a base station communication network or a smart home network, the third power supply interface 110C and the third power receiving interface 210C may be a network cable integrated power supply line, such as an RJ45 connector, etc., and a pin for transmitting a second electrical signal is integrated in the RJ454 as a detection pin 112C or a feedback pin 212C, etc. In addition, the third power supply interface 110C and the third power receiving interface 210C may be a direct current (DC) fast plug, etc.

[0087] Exemplarily, when the first device network 1000A or the second device network 1000B is a terminal device network, the third power supply device 100C may be a dedicated power supply device or an electronic processing device with a power supply function. For example, the third power supply device 100C may be a laptop computer, a desktop computer, a tablet computer, a mobile phone, a smart display screen, a host chassis, a speaker, etc. The third powered device 200C may be a laptop computer, a mobile phone, a smart watch, a tablet computer, an electronic pen, a display screen, a speaker, a wireless headset box, VR glasses, etc. At this time, the third power supply device 100C and the third powered device 200C may be a USB interface, a DC fast plug, an RJ45 interface, etc. For example, a type-c interface in a USB interface is used. In some examples, the type-c interface is a dual symmetrical structure, and the pins in the type-c interface on one side are both double symmetrical for transceiver functions. One cc pin of the double-sided type-c interface can be used as a detection pin 112C and a feedback pin 212C to transmit a first electrical signal, and another cc pin of the double-sided type-c interface can be used as a first excitation pin 113C and a second excitation pin 213C to transmit a second electrical signal. The vbus pins of the type-c interface are used as a power supply pin 111C and a power receiving pin 211C to transmit a power supply signal.

[0088] In some possible cases, when the third power supply interface 110C of the third power supply device 100C is coupled with the power receiving interface of the powered device that does not include the transmission characteristic circuit 230C. The third power supply interface 110C cannot receive the second electrical signal, or the detection pin 112C of the third power supply interface 110C can receive an electrical signal other than the second electrical signal. At this time, the third power supply device 100C may not provide a power supply signal to the powered device that does not include the transmission characteristic circuit 230C, or the third power supply device 100C may provide a power supply signal lower than the third powered device 200C to the powered device that does not include the transmission characteristic circuit 230C, so as to ensure that the power supply behavior does not cause power supply safety problems, etc.

[0089] Based on the above Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 The first device network 1000A or the second device network 1000B of the structure shown can be executed as follows Fig.12 The charging method shown includes steps S100 to S300:

[0090] S100 : The third power supplying device 100C sends a first electrical signal to the third power receiving device 200C.

[0091] For example, Figure 5 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 As shown, the third power supply device 100C responds to the coupling of the third power supply interface 110C with the third power receiving interface 210C of the third power receiving device 200C, and sends a first electrical signal to the third power receiving device 200C through the third power supply interface 110C. In the embodiment of the present application, in the design of the power supply scheme, it is usually necessary to realize that after the power supply interface and the power receiving interface are coupled, the power supply device can automatically supply power to the powered device (or automatically start to perform the power supply identification negotiation operation and then supply power). Therefore, it is usually designed in the power supply device and / or the powered device to realize the above-mentioned self-response function. For example, the control circuit 140C can detect the pin level change at the interface to realize the confirmation that the third power supply interface 110C is coupled with the third power receiving interface 210C.

[0092] S200 : The third power receiving device 200C sends a second electrical signal to the third power supplying device 100C.

[0093] For example, Figure 5 As shown, after receiving the first electrical signal, the characteristic transmission circuit 230C of the third power receiving device 200C transmits the first electrical signal and then sends a second electrical signal to the third power supplying device 100C.

[0094] For example, Figure 7 and Figure 8 As shown, the excitation signal source 130C of the third power supply device 100C sends a first electrical signal through the power supply pin 111C or the first excitation pin 113C. The third powered device 200C receives the first electrical signal through the powered pin 211C or the second excitation pin 213C. After the first electrical signal is transmitted by the transmission characteristic circuit 230C, the third powered device 200C outputs a second electrical signal through the feedback pin 212C. In the embodiment of the present application, the transmission characteristics of the transmission characteristic circuit 230C are used to change the characteristic electrical signal parameters of the first electrical signal to obtain the second electrical signal. Depending on the transmission characteristic circuit 230C, different characteristic electrical signal parameters of the first electrical signal can be changed, and depending on the transmission characteristic circuit 230C, the degree of change of the characteristic electrical signal parameters is also different.

[0095] For example, Figure 7 and Figure 8 As shown, after the third powered device 200C sends the second electrical signal through the feedback pin 212C, the third power supply device 100C may receive the second electrical signal from the detection pin 112C.

[0096] For example, Figure 7 and Figure 8 As shown, the control circuit 140C of the third power supply device 100C receives the second electrical signal through the detection pin 112C.

[0097] In some possible implementations, the characteristic electrical signal parameters of the second electrical signal are used to indicate the device identification of the third powered device 200C. In the embodiment of the present application, the power supply identification negotiation between the third power supply device 100C and the third powered device 200C is implemented in hardware by the transmission characteristic circuit 230C. The characteristic electrical signal parameters of the first electrical signal can be changed by the transmission characteristic circuit 230C to obtain the second electrical signal. At this time, the characteristic electrical signal parameters of the second electrical signal can be used to indicate the device identification of the third powered device 200C.

[0098] In some possible implementations, the characteristic electrical signal parameters of the second electrical signal are also used to indicate the power receiving parameters of the third powered device 200C. In the embodiment of the present application, in some application scenarios, the power supply device also needs to provide different power supply signals for different powered devices to match the power supply requirements of different powered devices. At this time, the transmission characteristic circuit 230C can be designed so that the characteristic electrical signal parameters of the second electrical signal can also be used to indicate the power receiving parameters of the corresponding third powered device 200C.

[0099] In some possible implementations, the characteristic electrical signal parameter includes at least one of the following: a phase change characteristic, an amplitude change characteristic, and a frequency change characteristic.

[0100] Exemplarily, when the characteristic electrical signal parameter includes a phase change characteristic, the transmission characteristic circuit 230C may change the phase of the first electrical signal to a certain extent to obtain a second electrical signal. When the phase of the first electrical signal is known, the third power supply device 100C may determine whether the third powered device 200C is a certified powered device based on whether the phase value of the second electrical signal is within a preset range. Figure 6 (a) and Figure 6 (b) The circuit adjusts the phase of the first electrical signal. In addition, when determining that the third powered device 200C is a certified powered device, the third power supply device 100C can also determine the power receiving parameters of the third powered device 200C according to the value of the phase of the second electrical signal. When the characteristic electrical signal parameters include amplitude change characteristics and / or frequency change characteristics, the technical principle and technical effect of determining the power receiving parameters according to the values ​​of the amplitude change characteristics and / or frequency change characteristics can be described in the above-mentioned description of the phase change characteristics, which will not be repeated here.

[0101] Exemplarily, when the characteristic electrical signal parameter includes a frequency variation characteristic, the transmission characteristic circuit 230C can also be used as a filter. The first electrical signal is a signal of a preset frequency value, and the first electrical signal is filtered by the transmission characteristic circuit 230C to obtain a second electrical signal. According to the frequency of the second electrical signal, it is determined whether the corresponding third powered device 200C is a certified powered device. In addition, when determining that the third powered device 200C is a certified powered device, the third power supply device 100C can also determine the power receiving parameters of the third powered device 200C according to the value of the frequency of the second electrical signal after filtering. In some examples, the transmission characteristic circuit 230C can be a filter circuit that performs a filtering function, that is, a signal of a certain frequency is filtered through, and signals of other frequencies are filtered out. In some examples, the transmission characteristic circuit 230C can be a filter circuit that performs a filtering function, that is, a signal of a certain frequency is filtered out, and signals of other frequencies are filtered through.

[0102] In some possible implementations, the characteristic electrical signal parameter includes at least one of a time variation characteristic or a noise characteristic.

[0103] Exemplarily, when the characteristic electrical signal parameter includes a time-varying characteristic, in some examples, during the time when the first electrical signal is transmitted on the transmission characteristic circuit 230C, at least one of the phase, amplitude, and frequency of the output second electrical signal may vary differently in different time periods due to the influence of the device parameters of the transmission characteristic circuit 230C. For example, when the first electrical signal is just input into the transmission characteristic circuit 230C, the load of the transmission characteristic circuit 230C will consume the first electrical signal to a certain extent, so that the amplitude of the second electrical signal just output is lower than the second electrical signal output subsequently. In some examples, the first electrical signal can be delayed by the transmission characteristic circuit 230C to obtain the second electrical signal. Whether the third powered device 200C is a certified powered device is determined based on the delay degree of the second electrical signal. When the third powered device 200C is a certified powered device, the powered parameters can also be determined based on the delay degree of the second signal.

[0104] Exemplarily, when the characteristic electrical signal parameter includes a time-varying characteristic, the transmission characteristic circuit 230C may be a noise generating circuit. A certain noise signal is added to the first electrical signal by the transmission characteristic circuit 230C. The third power supply device 100C determines whether the third powered device 200C is a certified powered device according to the noise signal on the second electrical signal. And, the corresponding powered parameters may be determined according to the signal parameters of the noise signal. In some examples, a certain reflection coefficient may be designed for the transmission characteristic circuit 230C to generate a certain reflection signal as a noise signal. In actual device design, in order to meet the normal transmission of the signal, impedance matching design needs to be performed in the circuit. Impedance matching can be understood as the characteristic impedance of the transmission line being equal to the connected load impedance in magnitude and phase, respectively referred to as the input end or output end of the transmission line being in an impedance matching state, referred to as impedance matching. When the first impedance is equal to the second impedance, the radio frequency signal can be transmitted without reflection on the transmission path. When the transmission impedance is not equal to the load impedance, the signal will generate reflection on the transmission path, generate interference signals, and reduce the transmission efficiency of the signal. Different reflection coefficients generate different reflection signals. By designing the characteristic impedance of the transmission characteristic circuit 230C, the transmission of the first electrical signal on the transmission characteristic circuit 230C cannot achieve impedance matching, and the corresponding reflection coefficient can be obtained. The third power supply device 100C determines whether the third power receiving device 100C is a certified power receiving device based on the corresponding reflection signal in the second electrical signal. The corresponding power receiving parameters can also be determined based on the signal parameters of the reflection signal.

[0105] S300: The third power supplying device 100C sends a power supply signal to the third power receiving device 200C.

[0106] In some possible implementations, when the characteristic electrical signal parameter of the second electrical signal is within a preset range, the third power supply device 100C sends a power supply signal to the third powered device 200C. In some examples, the characteristic electrical signal parameter of the second electrical signal can be used to indicate the device identification of the third powered device 200C. Therefore, when the characteristic electrical signal parameter of the second electrical signal is within the preset range, it represents that the third powered device 200C is a certified powered device, and the third power supply device 100C completes the power supply identification operation with the third powered device 200C and provides a power supply signal to the third powered device 200C. In some examples, the characteristic electrical signal parameter of the second electrical signal can be used to indicate the power receiving parameters of the third powered device 200C. Therefore, according to the value of the characteristic electrical signal parameter of the second electrical signal, etc., the power supply parameters of the power supply signal can be determined.

[0107] In some possible implementations, step S300 may include the following: Fig.13The sub-operations of step S310 to step S320 are shown as follows:

[0108] S310: Output a first control signal according to the second electrical signal.

[0109] In some possible implementations, such as Figure 7 and Figure 8 As shown, when the control circuit 140C inputs the second electrical signal, it outputs the first control signal according to the characteristic electrical signal parameter of the second electrical signal. The first control signal is used to instruct the third power supply 120C to supply a power signal to the third powered device 200C.

[0110] For example, Fig. 9 and Fig.10 As shown, the control circuit 140C can receive different second electrical signals of the third powered device 200C from the corresponding third power supply interface 110C. According to the second electrical signal, the corresponding first control signal is output to the third power supply 120C. Each first control signal is used to instruct the third power supply 120C to output a power supply signal to the corresponding third power supply interface 110C, so as to supply power to the corresponding third powered device 200C through the third power supply interface 110C.

[0111] For example, Fig.11 As shown, the control circuit 140C can send a first electrical signal to multiple third powered devices 200C through a third power supply interface 110C and a branch connector X1, and receive multiple second electrical signals fed back by multiple third powered devices 200C. Since the transmission characteristic circuits 230C of multiple third powered devices 200C change the characteristic electrical signal parameters of the first electrical signal in a consistent manner, the control circuit 140C determines whether all third powered devices 200C are certified powered devices based on the value ranges of the characteristic electrical signal parameters of the multiple second electrical signals. This solution can be applied to a scenario where all powered devices are certified powered devices. When a certified powered device fails, the failed powered device can be automatically powered off, but its transmission characteristic circuit 230C can still transmit the first electrical signal normally. The third power supply device 100C can still perform power supply identification on all third powered devices 200C on the third power supply interface 110C. The failure of a certain third power receiving device 200C does not affect the power receiving operation of other third power receiving devices 200C that are operating normally.

[0112] S320: output a power supply signal according to the first control signal.

[0113] In some possible implementations, such as Figure 7 and Figure 8As shown, the third power supply 120C outputs a power supply signal to the corresponding third power supply interface 110C according to the first control signal. In some examples, when the first control signal is used to indicate the device identification of the third powered device 200C, the third power supply 120C can output a power supply signal with a preset uniform parameter, or the third power supply 120C can output a power supply signal with a preset power supply parameter corresponding to the device identification. In some examples, when the first control signal is used to indicate the power receiving parameters of the third powered device 200C, the third power supply 120C can output a power supply signal with a corresponding power supply parameter according to the first control signal to match the power receiving requirements of the third powered device 200C.

[0114] In the embodiment of the present application, by setting a transmission characteristic circuit 230C in the third powered device 200C, different device identifications and / or power receiving parameters are indicated by the transmission characteristics of the transmission characteristic circuit 230C. The third power supply device 100C can determine the device identification and / or power receiving parameters of the third powered device 200C by processing the second electrical signal, thereby completing the distinction between the authenticated device and the unauthenticated device, and can also complete the negotiation of power supply requirements. Through the above embodiment, the setting of the power manager in the third powered device 200C can be reduced to reduce the device cost and device area overhead of the third powered device 200C. At the same time, when a plurality of third power supply interfaces 110C are provided in the third power supply device 100C, power is supplied to different third powered devices 200C through the plurality of third power supply interfaces 110C, and one excitation signal source 130C and / or control circuit 140C can be reused between the plurality of third power supply interfaces 110C, thereby reducing the device cost and device area overhead of the third power supply device 100C. In the above solution, on the basis of reducing the device cost and device area overhead of the first device network 1000A or the second device network 1000B, the reliability and safety of the power supply of the equipment can also be guaranteed.

[0115] The present application also provides a computer-readable storage medium, which includes instructions. When the instructions include the above Figure 5 , Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.10 and Fig.11 When the device network or the power supply device of the structure recorded in the embodiment is running, the device network or the third power supply device executes the above Fig.12 and Fig.13 The charging method described in the embodiment.

[0116] The processor involved in the embodiments of the present application may be a chip. For example, it may be a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on chip (SoC), a central processor unit (CPU), a network processor (NP), a digital signal processor (DSP), a microcontroller unit (MCU), a programmable logic device (PLD), or other integrated chips.

[0117] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0118] Those of ordinary skill in the art will appreciate that the modules and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0119] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and modules described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0120] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the modules is only a logical function division. There may be other division methods in actual implementation, such as multiple modules or components can be combined or integrated into another device, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or modules, which can be electrical, mechanical or other forms.

[0121] The modules described as separate components may or may not be physically separated, and the components shown as modules may or may not be physical modules, that is, they may be located in one device or distributed on multiple devices. Some or all of the modules may be selected according to actual needs to achieve the purpose of the present embodiment.

[0122] In addition, each functional module in each embodiment of the present application may be integrated into one device, or each module may exist physically separately, or two or more modules may be integrated into one device.

[0123] In the above embodiments, it can be implemented in whole or in part by software, hardware, firmware or any combination thereof. When implemented using a software program, it can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. When loading and executing a computer program instruction on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from a website site, a computer, a server or a data center by wired (e.g., coaxial cable, optical fiber, digital subscriber line (Digital Subscriber Line, DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) mode to another website site, computer, server or data center. The computer-readable storage medium may be any available medium that a computer can access or may contain one or more servers, data centers and other data storage devices that can be integrated with a medium. The available medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium (eg, a solid state disk (SSD)).

[0124] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art who is familiar with the present technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

1. A power supply device, characterized in that: Including a power supply interface; wherein the power supply device is used for: In response to the powered device being coupled to the power supply interface, sending a first electrical signal to the powered device through the power supply interface; receiving a second electrical signal from the powered device through the power supply interface; the second electrical signal is the first electrical signal after being transmitted by the powered device; When the characteristic electrical signal parameter of the second electrical signal is within a preset range, a power supply signal is sent to the powered device through the power supply interface; the characteristic electrical signal parameter is an electrical signal parameter affected by the transmission characteristics of the powered device.

2. The power supply device according to claim 1, characterized in that: The characteristic electrical signal parameter of the second electrical signal is also used to indicate the power receiving parameter of the powered device; and the power supply device is further used to: The power supply parameter size of the power supply signal is determined according to the characteristic electric signal parameter of the second electric signal.

3. The power supply device according to claim 1 or 2, characterized in that: The characteristic electrical signal parameter includes at least one of the following: a phase change characteristic, an amplitude change characteristic, and a frequency change characteristic.

4. The power supply device according to any one of claims 1 to 3, characterized in that: The characteristic electrical signal parameter includes at least one of a time variation characteristic or a noise characteristic.

5. The power supply device according to any one of claims 1 to 4, characterized in that: The power supply device comprises a plurality of the power supply interfaces; the plurality of power supply interfaces are used to couple with a corresponding plurality of the powered devices.

6. The power supply device according to any one of claims 1 to 5, characterized in that: The power supply interface includes a power supply pin and a detection pin; the power supply device sends the power supply signal to the powered device through the power supply pin; and the power supply device receives the second electrical signal from the powered device through the detection pin.

7. The power supply device according to claim 6, characterized in that: The power supply device sends the first electrical signal to the powered device through the power supply pin.

8. The power supply device according to claim 6, characterized in that: The power supply device further includes an excitation pin, and the power supply device sends the first electrical signal to the powered device through the excitation pin.

9. The power supply device according to any one of claims 1 to 8, characterized in that: The power supply device further comprises an excitation signal source, a control circuit and a power supply; the control circuit is coupled to the power supply interface and the power supply respectively; the power supply is coupled to the power supply interface; wherein: The excitation signal source is used to: send the first electrical signal to the powered device through the power supply interface; The control circuit is used to: input the second electrical signal from the power supply interface; when the characteristic electrical signal parameter of the second electrical signal is within a preset range, output a first control signal to the power supply through the power supply interface; the first control signal is used to instruct to supply power to the powered device; The power supply is used to send a power supply signal to the powered device through the power supply interface according to the first control signal.

10. The power supply device according to claim 9, characterized in that: The control circuit is a power manager.

11. A power receiving device, characterized in that: The device comprises a transmission characteristic circuit and a power receiving interface; the input end of the transmission characteristic circuit and the output end of the transmission characteristic circuit are respectively coupled to the power receiving interface; the power receiving device is used for: Based on the input end of the transmission characteristic circuit, receiving a first electrical signal from a power supply device through the power receiving interface; transmitting the first electrical signal through the transmission characteristic circuit; Based on the output end of the transmission characteristic circuit, a second electrical signal is sent to the power supply device through the power receiving interface; the second electrical signal is the first electrical signal after being transmitted by the transmission characteristic circuit; the transmission characteristic of the transmission characteristic circuit is used to change the characteristic electrical signal parameter of the first electrical signal to obtain the second electrical signal; A power supply signal is received from the power supply device through the power receiving interface.

12. The power receiving device according to claim 11, characterized in that: The transmission characteristics of the transmission characteristic circuit are also used to indicate the power receiving parameters of the powered device.

13. The power receiving device according to claim 11 or 12, characterized in that: The characteristic electrical signal parameter includes at least one of the following: a phase change characteristic, an amplitude change characteristic, and a frequency change characteristic.

14. The power receiving device according to any one of claims 11 to 13, characterized in that: The characteristic electrical signal parameter includes at least one of a time variation characteristic or a noise characteristic.

15. The power receiving device according to any one of claims 11 to 14, characterized in that: The transmission characteristic circuit includes at least one of the following components: an equivalent capacitor, an equivalent resistor, and an equivalent inductor.

16. The power receiving device according to any one of claims 11 to 15, characterized in that: The power receiving interface includes a power receiving pin and a feedback pin; the powered device receives a power supply signal from the power supply device via the power receiving pin; and the powered device sends the second electrical signal to the powered device via the feedback pin.

17. The power receiving device according to claim 16, characterized in that: The powered device receives the first electrical signal from the power supply device through the powered pin.

18. The power receiving device according to claim 16, characterized in that: The powered device further includes an excitation pin, and the powered device receives the first electrical signal from the power supply device through the excitation pin.

19. A charging method, characterized in that: Based on a power supply device; the method comprises: Sending a first electrical signal to a powered device; receiving a second electrical signal from the powered device; the second electrical signal being the first electrical signal after being transmitted by the powered device; When the characteristic electrical signal parameter of the second electrical signal is within a preset range, a power supply signal is sent to the powered device; the characteristic electrical signal parameter is a characteristic electrical signal parameter affected by the transmission characteristics of the powered device.

20. The charging method according to claim 19, characterized in that: The characteristic electrical signal parameter of the second electrical signal is also used to indicate the power receiving parameter of the powered device; the method further includes: The power supply parameter size of the power supply signal is determined according to the characteristic electric signal parameter of the second electric signal.

21. The charging method according to claim 19 or 20, characterized in that: The characteristic electrical signal parameter includes at least one of the following: a phase change characteristic, an amplitude change characteristic, and a frequency change characteristic.

22. The charging method according to any one of claims 19 to 21, characterized in that: The characteristic electrical signal parameter includes at least one of a time variation characteristic or a noise characteristic.

23. The charging method according to any one of claims 19 to 22, characterized in that: The sending a power supply signal to the powered device comprises: Obtaining a first control signal according to the second electrical signal; the first control signal is used to instruct to supply power to the powered device; A power supply signal is sent to the powered device according to the first control signal.

24. A charging method, characterized in that: Based on a powered device; the powered device includes a transmission characteristic circuit; the method includes: receiving a first electrical signal, transmitting the first electrical signal through the transmission characteristic circuit, and sending a second electrical signal to a power supply device; the second electrical signal is the first electrical signal after being transmitted by the transmission characteristic circuit; the transmission characteristic of the transmission characteristic circuit is used to change the characteristic electrical signal parameter of the first electrical signal to obtain the second electrical signal; A power supply signal is received from the power supply device.

25. The charging method according to claim 24, characterized in that: The transmission characteristics of the transmission characteristic circuit are also used to indicate the power receiving parameters of the powered device.

26. The charging method according to claim 24 or 25, characterized in that: The characteristic electrical signal parameter includes at least one of the following: a phase change characteristic, an amplitude change characteristic, and a frequency change characteristic.

27. The charging method according to any one of claims 24 to 26, characterized in that: The characteristic electrical signal parameters include time variation characteristics and noise characteristics.

28. A device network, characterized in that: The invention comprises a power supply device and a powered device; the power supply device comprises a power supply interface; the powered device comprises a powered interface and a transmission characteristic circuit; the power supply interface is coupled to an input end and an output end of the transmission characteristic circuit through the powered interface; wherein: the power supply device is used for: In response to the power receiving interface being coupled to the power supply interface, sending a first electrical signal to an input end of the transmission characteristic circuit through the power supply interface; receiving a second electrical signal from an output end of the transmission characteristic circuit through the power supply interface; the second electrical signal is the first electrical signal after being transmitted by the transmission characteristic circuit; When the characteristic electrical signal parameter of the second electrical signal is within a preset range, a power supply signal is sent to the powered device through the power supply interface; the characteristic electrical signal parameter is an electrical signal parameter affected by the transmission characteristics of the transmission characteristic circuit.

29. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes instructions; when the instructions are executed on the power supply device, the power supply device performs the following charging method: Sending a first electrical signal to a powered device; receiving a second electrical signal from the powered device; the second electrical signal being the first electrical signal after being transmitted by the powered device; When the characteristic electrical signal parameter of the second electrical signal is within a preset range, sending a power supply signal to the powered device; The characteristic electrical signal parameter is a characteristic electrical signal parameter affected by the transmission characteristics of the powered device.

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