Power supply device, power supply method, storage medium, and electronic device

Abstract

The embodiment of the present application provides a power supply device, a power supply method, a storage medium and an electronic device, wherein the power supply device comprises: a plurality of power supply interfaces, wherein each power supply interface is connected with a first controller through a corresponding power supply circuit, each power supply circuit is provided with a switching device, the switching device is used for controlling the on-off of the corresponding power supply circuit, and each switching device is further connected with an input end of a second controller; the input end of the first controller is connected with each power supply circuit, the output end of the first controller is connected with an output interface of the power supply device, the first controller is used for acquiring the output power corresponding to the output interface of the power supply device through the output end, and the output interface of the power supply device is configured to be connected with a target device; and the voltage acquisition interface of the second controller is connected with each power supply interface, and the second controller is used for acquiring the power supply power of each power supply interface.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of communications, and more specifically, to a power supply device, a power supply method, a storage medium, and an electronic device. Background Technology

[0002] In the 802.3at / af standard, the PSE can provide a maximum power of 25.5W, and its power rating is shown in Table 1. In the 802.3bt standard, the PD can require a maximum power of 71.3W, and its power rating is shown in Table 2.

[0003] Table 1

[0004]

[0005] Table 2

[0006]

[0007]

[0008] In related technologies, when a device compliant with the 802.3bt standard is to be connected to a switch compliant with the 802.3at / af standard, unless the PD's power consumption is less than 25.5W, it must be replaced with an 802.3bt-compliant switch or the PD's power consumption must be reduced. Forcing this connection will result in the switch's overcurrent protection triggering, power shutdown, or insufficient power supply to the PD, leading to continuous restarts and abnormal device operation. Both replacing the switch and reducing the PD's power consumption have drawbacks. Firstly, 802.3bt-compliant switches are relatively few in number and have a limited number of ports, so replacing the switch would increase time and cost significantly. Secondly, reducing the PD's power consumption will affect its performance, preventing it from meeting expected standards.

[0009] This indicates that there is an incompatibility issue between the power receiving equipment and the power supply equipment in the relevant technologies.

[0010] There is currently no effective solution to the aforementioned problems in the relevant technologies. Summary of the Invention

[0011] The present invention provides a power supply device, a power supply method, a storage medium, and an electronic device to at least solve the problem of incompatibility between the power receiving device and the power supply device in the related art.

[0012] According to an embodiment of the present invention, a power supply device is provided, comprising: a plurality of power supply interfaces, wherein each power supply interface is connected to a first controller via a corresponding power supply circuit, each power supply circuit is provided with a switching device for controlling the on / off state of the corresponding power supply circuit, and each switching device is also connected to an input terminal of a second controller; the input terminal of the first controller is connected to each power supply circuit, and the output terminal of the first controller is connected to an output interface of the power supply device, the first controller is used to acquire the output power corresponding to the output interface of the power supply device through the output terminal, and the output interface of the power supply device is configured to connect to a target device; a voltage acquisition interface of the second controller is connected to each of the power supply interfaces, and the second controller is used to acquire the sum of the power supply power of each power supply interface; the second controller is also connected to the first controller, and is used to acquire the output power from the first controller, compare the sum of the power supply power with the output power, and control each of the switching devices to turn on if the sum of the power supply power is greater than or equal to the output power.

[0013] According to another embodiment of the present invention, a power supply method is provided, applied in the power supply device described in the above embodiment, comprising: a second controller determining the sum of power supply power of a plurality of power supply interfaces; the second controller acquiring the output power corresponding to the output interface of the power supply device; and the second controller controlling the switching device to turn on when the sum of the power supply power is greater than or equal to the output power, so that a target power supply device connected to the power supply interface supplies power to the target device connected to the output interface of the power supply device through the first controller.

[0014] According to yet another embodiment of the present invention, a computer-readable storage medium is also provided, wherein a computer program is stored therein, wherein the computer program, when executed by a processor, implements the steps of the method described in any of the preceding claims.

[0015] According to yet another embodiment of the present invention, an electronic device is also provided, including a memory and a processor, wherein the memory stores a computer program and the processor is configured to run the computer program to perform the steps in any of the above method embodiments.

[0016] According to this invention, the power supply device includes multiple power supply interfaces, power supply circuits, a first controller, and a second controller. Each power supply interface is connected to the first controller via a power supply circuit. Each power supply circuit is equipped with a switching device for controlling the on / off state of the power supply circuit. Each switching device is also connected to the input terminal of the second controller. The input terminal of the first controller is connected to each power supply circuit, and the output terminal of the first controller is connected to the output interface of the power supply device. The first controller can obtain the output power corresponding to the output interface of the power supply device through its output terminal. The output interface of the power supply device is configured to connect to a target device. The second controller can obtain the sum of the power supply power of each power supply interface. The second controller is also connected to the first controller, obtains the output power from the first controller, compares the sum of the power supply power with the output power, and controls each switching device to turn on when the sum of the power supply power is greater than or equal to the output power, thereby supplying power to the target device. Since each power supply interface is connected to a power supply circuit, and each power supply circuit is connected to the first controller, the output interface of the power supply device can be powered through multiple power supply interfaces. When the sum of the power supply power of multiple power supply interfaces is greater than or equal to the output power, the target device can be powered. Therefore, the problem of incompatibility between the power receiving device and the power supply device in related technologies can be solved, achieving the effect of multiple power supply interfaces simultaneously powering the target device, increasing the power supply power, and ensuring compatibility between the power receiving device and the power supply device. Attached Figure Description

[0017] Figure 1 This is a structural diagram of a power supply device according to an embodiment of the present invention;

[0018] Figure 2 This is a circuit diagram of a power supply device according to a specific embodiment of the present invention;

[0019] Figure 3 This is a flowchart of a power supply method according to an embodiment of the present invention;

[0020] Figure 4 This is a circuit power supply output flowchart according to an embodiment of the present invention. Detailed Implementation

[0021] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings and examples.

[0022] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0023] This embodiment provides a power supply device. Figure 1 This is a structural diagram of a power supply device according to an embodiment of the present invention, such as... Figure 1As shown, the process includes the following steps:

[0024] Multiple power supply interfaces 12 are provided, wherein each power supply interface is connected to a first controller through a corresponding power supply circuit, each power supply circuit is provided with a switching device, the switching device is used to control the on and off of the corresponding power supply circuit, and each switching device is also connected to the input terminal of a second controller.

[0025] The input terminal of the first controller 14 is connected to each of the power supply circuits, and the output terminal of the first controller is connected to the output interface of the power supply device. The first controller is used to obtain the output power corresponding to the output interface of the power supply device through the output terminal. The output interface of the power supply device is configured to connect to the target device.

[0026] The voltage acquisition interface of the second controller 16 is connected to each of the power supply interfaces. The second controller is used to acquire the sum of the power supply power of each of the power supply interfaces. The second controller is also connected to the first controller and is used to acquire the output power from the first controller, compare the sum of the power supply power with the output power, and control each of the switching devices to turn on when the sum of the power supply power is greater than or equal to the output power.

[0027] In the above embodiments, the power supply device can be a device connecting a power supply equipment and a powered device, and the power supply equipment can be a PoE switch. Each of the multiple power supply interfaces is connected to a power supply interface of the PoE device. The power supply interface can be a PORT interface. The number of power supply interfaces included in the power supply device is the same as the number of power supply circuits, and each power supply interface can be connected to a first controller through a power supply circuit. The first controller can be a PSE chip. The input terminal of the first controller is connected to each power supply circuit, and the output terminal of the first controller is connected to the output interface of the power supply device. The output interface of the power supply device can be connected to a target device, and the first controller can obtain the required power, i.e., the output power, of the target device through the output interface of the power supply device.

[0028] In the above embodiments, the second controller may include multiple voltage acquisition interfaces, each connected to a power supply interface, i.e., the number of voltage acquisition interfaces and power supply interfaces are the same, and each voltage acquisition interface is connected to a power supply interface one by one. The second controller can acquire the power supply power of each power supply interface to obtain the sum of the power supply power of multiple power supply interfaces. The second controller is also connected to the first controller, which can send the output power to the second controller. The second controller compares the sum of the power supply power with the output power. When the sum of the power supply power is greater than or equal to the output power, it controls the switching devices in each power supply circuit to be turned on.

[0029] In the above embodiments, each power supply interface among the multiple power supply interfaces can output the same power. For example, when the output power of each power supply interface is 25.5W, n power supply interfaces can output n×25.5W, meaning that a maximum of n×25.5W of power can be supplied to devices. This enables a low-power output power supply device to supply power to a high-power receiving device.

[0030] According to this invention, the power supply device includes multiple power supply interfaces, power supply circuits, a first controller, and a second controller. Each power supply interface is connected to the first controller via a power supply circuit. Each power supply circuit is equipped with a switching device for controlling the on / off state of the power supply circuit. Each switching device is also connected to the input terminal of the second controller. The input terminal of the first controller is connected to the power supply circuit, and the output terminal of the first controller is connected to the output interface of the power supply device. The first controller can obtain the output power corresponding to the output interface of the power supply device through its output terminal. The output interface of the power supply device is configured to connect to a target device. The second controller can obtain the sum of the power supply power of each power supply interface. The second controller is also connected to the first controller, obtains the output power from the first controller, compares the sum of the power supply power with the output power, and controls each switching device to turn on to supply power to the target device when the sum of the power supply power is greater than or equal to the output power. Since each power supply interface is connected to a power supply circuit, and each power supply circuit is connected to the first controller, the output interface of the power supply device can be powered through multiple power supply interfaces. When the sum of the power supply power of multiple power supply interfaces is greater than or equal to the output power, the target device can be powered. Therefore, the problem of incompatibility between the power receiving device and the power supply device in related technologies can be solved, achieving the effect of multiple power supply interfaces simultaneously powering the target device, increasing the power supply power, and ensuring compatibility between the power receiving device and the power supply device.

[0031] In one exemplary embodiment, the power supply circuit further includes a rectifier, wherein the input terminal of the rectifier is connected to the power supply interface, and the output terminal of the rectifier is connected to the switching device. In this embodiment, the power supply circuit may further include a rectifier, wherein the rectifier may be a rectifier bridge, and the power supply interface and the switching device may be connected via the rectifier bridge.

[0032] In one exemplary embodiment, the power supply circuit further includes a PD chip, wherein the input terminal of the PD chip is connected to the output terminal of the rectifier, the output terminal of the PD chip is connected to the switching device, and the output terminal of the rectifier is connected to the switching device through the PD chip. In this embodiment, the power supply circuit may further include a PD chip, and the rectifier can be connected to the switching device through the PD chip.

[0033] In one exemplary embodiment, the power supply circuit further includes a first resistor, wherein a first end of the first resistor is connected to the output terminal of the PD chip, a second end of the first resistor is connected to the switching device, and the output terminal of the PD chip is connected to the switching device through the first resistor. In this embodiment, the power supply circuit may further include a first resistor, and the PD chip can be connected to the switching device through the first resistor.

[0034] In one exemplary embodiment, the switching device includes a field-effect transistor (FET), wherein the source of the FET is connected to the power supply interface, the gate of the FET is connected to the second controller, and the drain of the FET is connected to the first controller. In this embodiment, the switching device may be a FET, with its source connected to the power supply interface, its gate connected to the second controller, and its drain connected to the first controller. When the power supply device includes a rectifier, a PD chip, and a first resistor, the source of the FET can be connected to the power supply interface through the rectifier, the PD chip, and the first resistor; that is, the power supply interface, the rectifier, the PD chip, the first resistor, and the source of the FET are connected sequentially.

[0035] In one exemplary embodiment, the power supply device further includes an overcurrent protection circuit. A first terminal of the overcurrent protection circuit is connected to the output interface of the first controller, and the output interface of the first controller is connected to the output interface of the power supply device. A second terminal of the overcurrent protection circuit is connected to the overcurrent control interface of the first controller, and a third terminal of the overcurrent protection circuit is grounded. In this embodiment, the power supply device further includes an overcurrent protection circuit, which may include a field-effect transistor (FET). The first terminal of the overcurrent protection circuit may be the source of the FET. The first terminal of the overcurrent protection circuit may be connected to the output interface of the first controller, which may be the out interface of a PSE chip. The output interface of the first controller is also connected to the output interface of the power supply device, meaning the first terminal of the overcurrent protection circuit is also connected to the output interface of the power supply device. The second terminal of the overcurrent protection circuit is also connected to the overcurrent control interface of the first controller, wherein the second terminal of the overcurrent protection circuit may be the gate of the FET, and the overcurrent control interface of the first controller may be the Gate1 interface of the PSE. The third terminal of the overcurrent protection circuit may be the drain of the FET, and the third terminal of the overcurrent protection circuit is grounded.

[0036] In one exemplary embodiment, the overcurrent protection circuit further includes a second resistor, and the third terminal of the overcurrent protection circuit is grounded through the second resistor. In this embodiment, the overcurrent protection circuit may also include a second resistor, and when the overcurrent protection circuit is a field-effect transistor (FET), the drain of the FET is grounded through the second resistor.

[0037] In one exemplary embodiment, the overcurrent protection circuit further includes a third resistor, and the second terminal of the overcurrent protection circuit is connected to the overcurrent control interface through the third resistor. In this embodiment, when the overcurrent protection circuit is a field-effect transistor (FET), the gate of the FET can be connected to the overcurrent control interface through the third resistor.

[0038] In one exemplary embodiment, the first controller further includes an auxiliary interface connected to a third terminal of the overcurrent protection circuit. In this embodiment, the first controller further includes an auxiliary interface; when the first controller is a PSE chip, the auxiliary interface can be a Sense interface. The third terminal of the overcurrent protection circuit is connected to the auxiliary interface.

[0039] In one exemplary embodiment, the power supply device further includes a voltage regulator circuit, wherein the voltage regulator circuit includes a voltage regulator capacitor and a voltage regulator source, the voltage regulator source being connected to the output interface of the first controller via the voltage regulator capacitor, and the output interface of the first controller being connected to the output interface of the power supply device. In this embodiment, the power supply device further includes a voltage regulator circuit, which may include a voltage regulator capacitor and a voltage regulator source. The voltage regulator source can be connected to the output interface of the first controller via the voltage regulator capacitor.

[0040] The power supply device will be described below with reference to specific implementation methods:

[0041] Figure 2 This is a circuit diagram of a power supply device according to a specific embodiment of the present invention, such as... Figure 2 As shown, the circuit includes: an MCU controller (corresponding to the second controller mentioned above), a PSE control circuit (corresponding to the first controller mentioned above and the overcurrent protection circuit), a PD circuit (including a rectifier bridge, i.e., the rectifier device mentioned above and the PD chip), and a current sharing circuit (including R5, i.e., the first resistor mentioned above, and Q1, i.e., the switching device).

[0042] (a) MCU controller: This is the logic implementation chip for the entire module. It mainly manages the PSE chip through the I2C interface to achieve hierarchical detection, power comparison, and power supply.

[0043] (b) PSE control circuit: The main circuit that supplies power to the PSE. It consists of discrete components such as a PSE chip conforming to the standard IEEE 802.3bt protocol (corresponding to the first controller mentioned above), resistors and capacitors, and MOSFETs.

[0044] (c) PD Interface: This is the external interface for the PD. It mainly connects to uplink devices.

[0045] d) Current sharing control circuit: mainly to achieve uniform current output from PD terminal and prevent overcurrent protection.

[0046] It should be noted that the above modules can be implemented by software or hardware. For the latter, they can be implemented in the following ways, but are not limited to: all the above modules are located in the same processor; or, the above modules are located in different processors in any combination.

[0047] Embodiments of the present invention also provide a power supply method. Figure 3 This is a flowchart of a power supply method according to an embodiment of the present invention, such as... Figure 3 As shown, the process includes:

[0048] Step S302: Determine the power supply power of the plurality of power supply interfaces;

[0049] Step S304: Obtain the output power corresponding to the output interface of the power supply device;

[0050] Step S306: When the power supply is greater than or equal to the output power, control the switching device to turn on, so that the target power supply device connected to the power supply interface supplies power to the target device connected to the output interface of the power supply device through the first controller.

[0051] Optionally, the entity performing the above steps can be a second controller.

[0052] In the above embodiments, the second controller can determine the sum of the power supply power of multiple power supply interfaces, and obtain the output power corresponding to the output interface of the power supply device. When the sum of the power supply power is greater than or equal to the output power, the second controller controls the switching device to turn on, so that the target power supply device connected to the power supply interface can be powered by the first controller to the target device connected to the output interface of the power supply device. The target power supply device can be a PoE switch.

[0053] After the circuit is powered on, the MCU reads the uplink network port power supply status (+48V) via the ADC interface. If +48V is present, the MCU records the uplink network port power supply status and the total power P1. The MCU then reads the presence signal register A of the PSE chip via the I2C interface. When this register value matches the agreed-upon value, the PSE chip is configured in manual mode, port detection is performed, the PD class is determined, and the power is recorded as P2.

[0054] The circuit power supply output flowchart can be found in the appendix. Figure 4 ,like Figure 4 As shown, the process includes:

[0055] 1. After the system is powered on, the MCU determines the status of the uplink port and records the power P1;

[0056] 2. The PSE chip performs detection and classification on PD devices and records the power P2;

[0057] 3. Determine if the load is a valid PD;

[0058] 4. If the load is a valid PD, then proceed to step 6;

[0059] 5. If the load is an invalid PD, skip to step 3;

[0060] 6. If P1 ≤ P2, the input power is less than the output power, and power cannot be supplied externally. Then skip to step 8.

[0061] 7. If P1 > P2, the input power is greater than the output power, and external power can be supplied. Then skip to step 9;

[0062] 8. Set the PSE port to shutdown mode;

[0063] 9. The MCU controls the MOSFET in the current sharing circuit to turn on, and then the PSE is enabled to supply power;

[0064] 10. Monitor the port status in real time. If the port status changes, skip to step 1.

[0065] For example, a 35W BT device needs power. Two PoE cables need to be plugged into the uplink port to meet the requirement. After the MCU powers on, it detects that two AT PoE ports are available uplink, with a power of 25.5 * 2 = 51W; the PSE detects that the downlink BTPD class is 40W (Class 5); the MCU determines that 51W > 40W and can provide power, so it activates the current sharing circuit to supply power to the downstream device. If the uplink port cable is unplugged, the uplink port's power supply capacity is insufficient, and the MCU cuts off the current, preventing downlink power supply.

[0066] In the aforementioned embodiments, based on the IEEE 802.af / at and IEEE 802.bt standards, the technical design from the PD end enables multiple PD ports conforming to the at / af standard (up to 4) to be combined into one PSE output port conforming to the bt standard, ensuring stronger technical compatibility; multiple PD network ports are combined into one PSE power supply port, enabling multiple (up to 4) PD input ports to supply power to one PSE output port, achieving output power conforming to the IEEE 802.bt standard.

[0067] Embodiments of the present invention also provide a computer-readable storage medium storing a computer program, wherein the computer program, when executed by a processor, implements the steps of the method described in any of the preceding claims.

[0068] In one exemplary embodiment, the aforementioned computer-readable storage medium may include, but is not limited to, various media capable of storing computer programs, such as a USB flash drive, read-only memory (ROM), random access memory (RAM), portable hard disk, magnetic disk, or optical disk.

[0069] Embodiments of the present invention also provide an electronic device including a memory and a processor, the memory storing a computer program and the processor being configured to run the computer program to perform the steps in any of the above method embodiments.

[0070] In one exemplary embodiment, the electronic device may further include a transmission device and an input / output device, wherein the transmission device is connected to the processor and the input / output device is connected to the processor.

[0071] Specific examples in this embodiment can be found in the examples described in the above embodiments and exemplary implementations, and will not be repeated here.

[0072] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0073] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A power supply device, characterized in that, include: The system includes multiple power supply interfaces, each connected to a first controller via a corresponding power supply circuit. Each power supply circuit is equipped with a switch for controlling the on / off state of the corresponding power supply circuit. Each switch is also connected to the input terminal of a second controller. Each power supply interface is connected to a power supply interface of a power supply device. The power supply device connects the power supply device to the target device. The power output of the power supply device is less than the power required by the target device. The number of power supply interfaces in the power supply device is the same as the number of power supply circuits. The power supply device is a PoE switch. Each power supply interface outputs the same power. The input terminal of the first controller is connected to each of the power supply circuits, and the output terminal of the first controller is connected to the output interface of the power supply device. The first controller is used to obtain the output power corresponding to the output interface of the power supply device through the output terminal. The output interface of the power supply device is configured to connect to the target device. The voltage acquisition interface of the second controller is connected to each of the power supply interfaces. The number of voltage acquisition interfaces is the same as the number of power supply interfaces. Each voltage acquisition interface is connected to a power supply interface. The second controller is used to acquire the sum of the power supply power of each of the power supply interfaces. The second controller is also connected to the first controller and is used to acquire the output power from the first controller, compare the sum of the power supply power with the output power, and control each of the switching devices to turn on if the sum of the power supply power is greater than or equal to the output power. The power supply circuit also includes a rectifier and a PD chip. The input terminal of the rectifier is connected to the power supply interface, and the output terminal of the rectifier is connected to the switching device. The input terminal of the PD chip is connected to the output terminal of the rectifier, and the output terminal of the PD chip is connected to the switching device. The output terminal of the rectifier is connected to the switching device through the PD chip.

2. The power supply device according to claim 1, characterized in that, The power supply circuit further includes a first resistor, wherein a first end of the first resistor is connected to the output terminal of the PD chip, a second end of the first resistor is connected to the switching device, and the output terminal of the PD chip is connected to the switching device through the first resistor.

3. The power supply device according to claim 1, characterized in that, The switching device includes a field-effect transistor (FET), wherein the source of the FET is connected to the power supply interface, the gate of the FET is connected to the second controller, and the drain of the FET is connected to the first controller.

4. The power supply device according to claim 1, characterized in that, The power supply device further includes an overcurrent protection circuit. The first terminal of the overcurrent protection circuit is connected to the output interface of the first controller, the output interface of the first controller is connected to the output interface of the power supply device, the second terminal of the overcurrent protection circuit is connected to the overcurrent control interface of the first controller, and the third terminal of the overcurrent protection circuit is grounded.

5. The power supply device according to claim 4, characterized in that, The overcurrent protection circuit also includes a second resistor, and the third terminal of the overcurrent protection circuit is grounded through the second resistor.

6. The power supply device according to claim 5, characterized in that, The overcurrent protection circuit also includes a third resistor, and the second terminal of the overcurrent protection circuit is connected to the overcurrent control interface through the third resistor.

7. The power supply device according to claim 4, characterized in that, The first controller also includes an auxiliary interface, which is connected to the third terminal of the overcurrent protection circuit.

8. The power supply device according to claim 1, characterized in that, The power supply device further includes a voltage regulator circuit, wherein the voltage regulator circuit includes a voltage regulator capacitor and a voltage regulator source, the voltage regulator source is connected to the output interface of the first controller through the voltage regulator capacitor, and the output interface of the first controller is connected to the output interface of the power supply device.

9. A power supply method, characterized in that, The application in the power supply device as described in any one of claims 1 to 8 includes: Determine the power supply power of the multiple power supply interfaces; Obtain the output power corresponding to the output interface of the power supply device; When the power supply is greater than or equal to the output power, the switching device is controlled to turn on, so that the target power supply device connected to the power supply interface supplies power to the target device connected to the output interface of the power supply device through the first controller.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a computer program, wherein the computer program, when executed by a processor, implements the steps of the method described in claim 9.

11. An electronic device comprising a memory and a processor, characterized in that, The memory stores a computer program, and the processor is configured to run the computer program to perform the method of claim 9.

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