Power driving method, electronic equipment and computer readable medium

Abstract

The invention provides a power supply driving method. The method comprises the following steps: determining the number of in-place power supplies in parallel power supply equipment; the parallel power supply equipment comprises a plurality of power supplies, and the plurality of power supplies are in-place power supplies; determining a switching frequency corresponding to each in-place power supply according to the number of the in-place power supplies; wherein the switching frequencies corresponding to any two in-place power supplies are different; and controlling each in-place power supply to work at the corresponding switching frequency. The invention further provides electronic equipment and a computer readable medium.

Description

Technical Field

[0001] The present disclosure relates to the technical field of power supplies, and particularly to a power supply driving method, an electronic device, and a computer-readable medium. Background Art

[0002] In some application scenarios with high-reliability power supply requirements, 1+1 or N+1 parallel backup of power supplies is often required, that is, a parallel power supply device composed of multiple power supplies supplies power to a load system together.

[0003] However, for a parallel power supply device, the switching frequencies of multiple power supplies therein are the same, so the superposition of their noises will cause a significant increase in the noise of the entire system. Summary of the Invention

[0004] Embodiments of the present disclosure provide a power supply driving method, an electronic device, and a computer-readable medium.

[0005] In a first aspect, embodiments of the present disclosure provide a power supply driving method, where the method includes:

[0006] Determine the number of in-service power supplies in the parallel power supply device; the parallel power supply device includes multiple power supplies, and multiple power supplies are in-service power supplies;

[0007] According to the number of in-service power supplies, determine the switching frequency corresponding to each in-service power supply; where the switching frequencies corresponding to any two in-service power supplies are different;

[0008] Control each in-service power supply to work at the corresponding switching frequency.

[0009] In a second aspect, embodiments of the present disclosure provide an electronic device, including:

[0010] One or more processors;

[0011] A memory storing one or more programs, which when executed by the one or more processors, cause the one or more processors to implement the power supply driving method described in the first aspect of the embodiments of the present disclosure.

[0012] In a second aspect, embodiments of the present disclosure provide a computer-readable medium storing a computer program, and when the program is executed by a processor, the power supply driving method described in the first aspect of the embodiments of the present disclosure is implemented.

[0013] The power supply driving method provided by the embodiments of the present disclosure determines the number of in-service power supplies in the parallel power supply device, and allocates different switching frequencies to each in-service power supply within a certain frequency range, so that the interference noise spectra of the entire load system are staggered, reducing the electromagnetic interference EMI of the parallel power supply device. Brief Description of the Drawings

[0014] Figure 1 It is a flowchart of a power supply driving method provided by an embodiment of the present disclosure;

[0015] Figure 2 It is a schematic diagram of the connection structure between a load system and an in - place power supply provided by an embodiment of the present disclosure;

[0016] Figure 3 It is another schematic diagram of the connection structure between a load system and an in - place power supply provided by an embodiment of the present disclosure;

[0017] Figure 4 It is still another schematic diagram of the connection structure between a load system and an in - place power supply provided by an embodiment of the present disclosure;

[0018] Figure 5 It is a flowchart of a specific implementation method for step S2 in an embodiment of the present disclosure;

[0019] Figure 6 It is a flowchart of a specific implementation method for step S21 in an embodiment of the present disclosure;

[0020] Figure 7 It is a flowchart of a specific implementation method for step S22 in an embodiment of the present disclosure;

[0021] Figure 8 It is a schematic diagram of the structure of an electronic device provided by an embodiment of the present disclosure;

[0022] Figure 9 It is a schematic diagram of the structure of a computer - readable medium provided by an embodiment of the present disclosure;

[0023] Figure 10 It is a schematic flow diagram of an exemplary power supply driving method provided by an embodiment of the present disclosure;

[0024] Figure 11 It is a schematic diagram of the structure of an exemplary power supply driving circuit provided by an embodiment of the present disclosure;

[0025] Figure 12 It is another schematic diagram of the structure of an exemplary power supply driving circuit provided by an embodiment of the present disclosure;

[0026] Figure 13 It is still another schematic diagram of the structure of an exemplary power supply driving circuit provided by an embodiment of the present disclosure;

[0027] Figure 14 It is another schematic flow diagram of an exemplary power supply driving method provided by an embodiment of the present disclosure;

[0028] Figure 15Schematic diagram of a power supply driving circuit provided by an embodiment of the present disclosure;

[0029] Figure 16 Flow chart of yet another exemplary power supply driving method provided by an embodiment of the present disclosure. Detailed implementation manners

[0030] To enable those skilled in the art to better understand the technical solutions of the present disclosure, the control method, electronic device, and computer-readable medium provided by the present disclosure will be described in detail below with reference to the accompanying drawings.

[0031] In the following, example embodiments will be described more fully with reference to the accompanying drawings. However, the example embodiments may be embodied in different forms and should not be construed as limited to the embodiments set forth herein. On the contrary, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0032] In the case of no conflict, the various embodiments of the present disclosure and the features in the embodiments may be combined with each other.

[0033] As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0034] The terms used herein are only for describing specific embodiments and are not intended to limit the present disclosure. As used herein, the singular forms "a" and "the" are also intended to include the plural forms unless the context clearly indicates otherwise. It will also be understood that when the terms "comprise" and / or "consist of" are used in this specification, the specified features, wholes, steps, operations, elements, and / or components are present, but do not preclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or groups thereof.

[0035] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art. It will also be understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the context of the relevant art and the present disclosure, and will not be interpreted as having an idealized or overly formal meaning unless expressly so defined herein.

[0036] In some related technologies, EMI (Electromagnetic Interference) noise reduction is performed based on a single power supply. However, for a parallel power supply device including two or more power supply sources, when the noises of the switching frequencies of multiple power supply sources are superimposed together, it will cause a significant increase in the noise generated by the entire parallel power supply device, and the EMI noise reduction of a single power supply does not have much improvement effect on it. Therefore, there is an urgent need to provide an EMI noise reduction method for parallel power supply devices.

[0037] Figure 1 The flowchart of a power supply driving method provided by an embodiment of the present disclosure. In a first aspect, referring to Figure 1 , an embodiment of the present disclosure provides a power supply driving method, including:

[0038] Step S1, determining the number of in-service power supplies in the parallel power supply device; the parallel power supply device includes multiple power supply sources, and multiple power supply sources are in-service power supplies;

[0039] Step S2, determining the switching frequency corresponding to each in-service power supply according to the number of in-service power supplies; wherein, the switching frequencies corresponding to any two in-service power supplies are different;

[0040] Step S3, controlling each in-service power supply to work at the corresponding switching frequency.

[0041] In an embodiment of the present disclosure, the parallel power supply device includes multiple power supply sources, that is, multiple power supply units capable of supplying power to a load system. An in-service power supply is a power supply source that is currently actually connected to the load system and is in a working state in the parallel power supply device. When the parallel power supply device supplies power to the load system, it may be that all power supply sources in the parallel power supply device supply power to it (that is, all power supply sources are in-service power supplies), or it may be that some power supply sources in the parallel power supply device supply power to it (that is, only some power supply sources are in-service power supplies, but it is still necessary to ensure that there are multiple in-service power supplies). The present disclosure is not limited thereto.

[0042] By determining the number of in-service power supplies in the parallel power supply device and allocating different switching frequencies to each in-service power supply within a certain frequency range according to the number of in-service power supplies, the interference noise spectra of the entire load system are staggered, reducing the electromagnetic interference EMI of the parallel power supply device.

[0043] In some embodiments, step S1 includes:

[0044] Identifying the physical addresses of the in-service power supplies in the parallel power supply device in the load system;

[0045] Determining the total number of the identified physical addresses as the number of in-service power supplies.

[0046] In this embodiment, the physical address (i.e., the Mac address) is used to uniquely identify and locate the position of the power supply in the load system. Since the on-site power supply is the power supply that is currently connected to the load system and in a working state in the parallel power supply device, therefore, the total number of physical addresses of the power supplies that are in a working state and can be recognized in the load system is the number of on-site power supplies. In some embodiments, the number of on-site power supplies can also be determined by directly identifying the slot address of the on-site power supply in the load system.

[0047] Figure 2 Schematic diagram of the connection structure between a load system and an on-site power supply provided by an embodiment of the present disclosure. Refer to Figure 2 , the on-site power supplies correspond to their unique physical addresses in the load system in sequence. The on-site power supply 1 corresponds to the physical address 1, the on-site power supply 2 corresponds to the physical address 2, and the on-site power supply 3 corresponds to the physical address 3. The load system determines the number of on-site power supplies by identifying the total number of physical addresses of the on-site power supplies. After determining the number of on-site power supplies, the switching frequency corresponding to each on-site power supply is determined, and the on-site power supply is controlled to operate at the switching frequency.

[0048] In some embodiments, step S1 includes:

[0049] Identify the hardware signals of the on-site power supplies in the parallel power supply device and determine the number of on-site power supplies.

[0050] In this embodiment, the hardware signal of the on-site power supply is a signal used to monitor and manage the status of the power supply module. In some embodiments, the load system determines whether the power supply corresponding to the hardware signal is working properly by identifying the hardware signal, and the load system determines the power supply in a working state as the on-site power supply, thereby determining the number of on-site power supplies.

[0051] Figure 3 Another schematic diagram of the connection structure between a load system and an on-site power supply provided by an embodiment of the present disclosure. Refer to Figure 3 , the on-site power supplies correspond to their unique physical addresses in the load system in sequence. The load system identifies the hardware signals of the power supplies, determines the power supplies in a working state as the on-site power supplies. After determining the number of on-site power supplies, the switching frequency corresponding to each on-site power supply is determined, and through the physical address corresponding to the on-site power supply, the determined switching frequency is transmitted to the on-site power supply through the hardware signal, so that the on-site power supply operates at the switching frequency.

[0052] In some embodiments, step S1 includes:

[0053] Receive the serial numbers sent by the on-site power supplies in the parallel power supply device;

[0054] Determine the total number of the received serial numbers as the number of on-site power supplies.

[0055] In the embodiments of the present disclosure, the serial number is the unique identification number of the power supply in place, and each power supply has a different serial number, which is used to clearly distinguish and track each power supply. In some embodiments, the serial number of the power supply is usually assigned and marked during manufacturing.

[0056] In this embodiment, each power supply communicates through a communication bus. Each power supply sends the serial number of the fuselage to the load system through the communication bus, and the load system determines the number of power supplies in place according to the total number of received serial numbers. Among them, in the embodiments of the present disclosure, the type of the communication bus is not specially limited, and it can be IIC (Inter-Integrated Circuit), RS-485, can (Controller Area Network), etc.

[0057] Figure 4 It is a schematic diagram of another connection structure between the load system and the power supply in place provided by the embodiments of the present disclosure. Refer to Figure 4 , each power supply in place communicates with the load system and / or other power supplies through a communication bus, transmits the serial number to the load system by using the communication bus, and the serial numbers of different power supplies in place are different. The load system determines the number of power supplies in place according to the total number of received serial numbers. After determining the number of power supplies in place, determine the switching frequency corresponding to each power supply in place, and transmit the determined switching frequency to the power supply in place through the communication bus, so that the power supply in place operates at the switching frequency.

[0058] Figure 5 It is a flowchart of a specific implementation method of step S2 in the embodiments of the present disclosure. Refer to Figure 5 , in some embodiments, step S2 includes:

[0059] Step S21: Determine the frequency interval value according to the number of power supplies in place and the preset switching frequency range;

[0060] Step S22: Determine the switching frequency corresponding to each power supply in place according to the frequency interval value.

[0061] In the embodiments of the present disclosure, the preset switching frequency range is the range between the maximum switching frequency and the minimum switching frequency of the parallel power supply equipment. Within the preset switching frequency range, determine the frequency interval value, and allocate the number of switching frequencies equal to the number of power supplies in place to the power supplies in place according to the frequency interval value. The frequency interval value refers to the frequency stagger value between the power supplies in place. By allocating different switching frequencies to different power supplies in place, the noise of the parallel power supply equipment when supplying power to the load system is reduced, so as to achieve the effect of suppressing EMI.

[0062] Embodiments of the present disclosure do not impose special limitations on the magnitude of the frequency interval value, that is, the frequency interval values between adjacent switching frequencies with different magnitude of frequency values can be the same or different.

[0063] Figure 6 It is a flowchart of a specific implementation method for step S21 in an embodiment of the present disclosure. Refer to Figure 6 , correspondingly, in some embodiments, step S21 includes:

[0064] Step S211: Determine a first difference between the maximum switching frequency and the minimum switching frequency in the preset switching frequency range, and a second difference obtained by subtracting one from the number of in-service power supplies;

[0065] Step S212: Determine the ratio of the first difference to the second difference as the frequency interval value.

[0066] In this embodiment, the frequency interval values determined by the ratio of the first difference to the second difference are the same, that is, the frequency interval values between adjacent switching frequencies with different magnitude of frequency values are the same, and the switching frequencies of the in-service power supplies are evenly distributed in an arithmetic progression within the preset switching frequency range, thereby achieving a better system noise reduction effect.

[0067] The first difference in the embodiments of the present disclosure is not limited to the difference between the maximum switching frequency and the minimum switching frequency, and can be the difference between any two switching frequency values within the preset switching frequency range.

[0068] Figure 7 It is a flowchart of a specific implementation method for step S22 in an embodiment of the present disclosure. Refer to Figure 7 , in some embodiments, step S22 includes:

[0069] Step S221: Use the minimum switching frequency within the preset switching frequency range as the switching frequency corresponding to the first in-service power supply;

[0070] Step S222: Starting from the minimum switching frequency, sequentially increase the frequency interval value, and determine the switching frequency value corresponding to each increase of the frequency interval value as the switching frequency corresponding to the next in-service power supply.

[0071] In the embodiments of the present disclosure, the switching frequencies can be sequentially assigned to each in-service power supply in the order of physical address, or in the order of receiving hardware signals, or in the order of serial numbers. The present disclosure is not limited thereto.

[0072] The embodiments of the present disclosure are not limited to determining the switching frequency starting from the minimum switching frequency, and can start from any switching frequency value within the preset switching frequency range.

[0073] In some embodiments, the multiple switching frequencies may be any of a plurality of different values within a preset switching frequency range.

[0074] In one example, the minimum switching frequency of the parallel power supply device is M, the maximum switching frequency is N, and the current number of in-place power supplies determined by the load system is L.

[0075] Through the formula:

[0076]

[0077] Determine the frequency interval value Z.

[0078] The load system determines the switching frequencies of the L in-place power supplies to be: M, M + Z, M + 2*Z... M + (L - 2)*Z, N according to the frequency interval value Z.

[0079] In some embodiments, step S3 includes:

[0080] Send each of the switching frequencies to the corresponding in-place power supply respectively, so that the in-place power supply operates at the switching frequency.

[0081] In the embodiments of the present disclosure, the load system can allocate the corresponding switching frequencies to each in-place power supply either through hardware signals or through a communication bus, which can be determined according to the actual situation. After receiving the allocated switching frequency, the in-place power supply will adjust the switching frequency of the switching elements (such as transistors, MOSFETs, IGBTs, etc.) inside it.

[0082] In the above embodiments of the present disclosure, by determining the number of in-place power supplies in the parallel power supply device and allocating different switching frequencies to each in-place power supply within a certain frequency range, the interference noise spectra of the entire load system are staggered, reducing the electromagnetic interference EMI of the parallel power supply device. There is no need to use too many filters for the parallel power supply device. This solution can effectively reduce the volume of the filter and the development design difficulty in actual application, especially for the low-frequency conducted emission of the entire system, with obvious benefits.

[0083] In a second aspect, referring to Figure 8 , the embodiments of the present disclosure provide an electronic device, which includes:

[0084] One or more processors 801;

[0085] A memory 802, on which one or more programs are stored. When the one or more programs are executed by the one or more processors, the one or more processors implement the power driving method of any one of the above.

[0086] One or more I / O interfaces 803, connected between the processor and the memory, are configured to implement information interaction between the processor and the memory.

[0087] Among them, the processor 801 is a device with data processing capabilities, including but not limited to a central processing unit (CPU), etc.; the memory 802 is a device with data storage capabilities, including but not limited to a random access memory (RAM, more specifically such as SDRAM, DDR, etc.), a read-only memory (ROM), an electrically erasable programmable read-only memory (EEPROM), a flash memory (FLASH); the I / O interface (read / write interface) 803 is connected between the processor 801 and the memory 802 and can implement information interaction between the processor 801 and the memory 802, including but not limited to a data bus (Bus), etc.

[0088] In a third aspect, referring to Figure 9 , an embodiment of the present disclosure provides a computer-readable medium, on which a computer program is stored, and when the program is executed by a processor, it implements any one of the above power driving methods.

[0089] In order to enable those skilled in the art to more clearly understand the technical solutions provided by the embodiments of the present disclosure, the following will use specific embodiments to detail the technical solutions provided by the embodiments of the present disclosure:

[0090] Embodiment 1: Figure 10 is a schematic flowchart of an exemplary power driving method provided by an embodiment of the present disclosure. Referring to Figure 2 and Figure 10 , the power driving process is as follows:

[0091] Step 1001, the load system reads the physical address of the on-site power supply and determines the current number of on-site power supplies according to the physical address.

[0092] Step 1002, according to different physical addresses, set the corresponding switching frequencies according to a preset rule. Here, the preset rule means determining a number of switching frequencies that are evenly distributed in an arithmetic progression within the range of the maximum switching frequency and the minimum switching frequency of the parallel power supply devices. The magnitude of the difference in switching frequencies (frequency interval value) between each on-site power supply is preset in advance and is bound to the slot (physical address).

[0093] Step 1003, the load system outputs the switching frequency to the corresponding on-site power supply.

[0094] Figure 11 is a schematic structural diagram of an exemplary power driving circuit provided by an embodiment of the present disclosure. Referring to Figure 11, in one example, in the load system, the MCU (Micro Controller Unit) reads or identifies the levels of address A and address B to determine the physical address. The MCU allocates the switching frequency according to different physical addresses and outputs a Pulse Width Modulation (PWM) signal indicating the switching frequency. The MCU directly issues the PWM signal according to the allocated switching frequency based on the high (or floating) and low levels of the obtained address information. The PWM signals corresponding to different physical addresses are different, and the on-site power supply corresponding to the physical address performs switching drive according to the different switching frequencies issued.

[0095] Among them, a schematic allocation process for allocating switching frequencies to address A and address B is as follows:

[0096] Through the formula:

[0097]

[0098] Determine the frequency interval value Z. Among them, the minimum switching frequency of the parallel power supply device is M, the maximum switching frequency is N, and the currently determined number of on-site power supplies in the load system is L. The switching frequencies of the L on-site power supplies determined in sequence are: M, M + Z, M + 2*Z... M + (L - 2)*Z, N.

[0099] Another schematic allocation process for allocating switching frequencies to address A and address B is as follows:

[0100] In Figure 11 , the physical address recognized by the MCU is composed of two address bits, namely address A and address B. 0 is used to represent the low level situation in the address information, and 1 is used to represent the high level (or floating) situation in the address information. The first digit represents the level situation of address B, and the second digit represents the level situation of address A. For example, 01 means that address A is at a high level (or floating) and address B is at a low level.

[0101] According to the physical address recognized by the MCU, look up the preset switching frequency allocation table and output the corresponding switching frequency to ensure that each corresponding switching frequency is not repeated.

[0102] In one example, the preset switching frequency allocation table is shown in Table 1:

[0103] Table 1

[0104] Physical address Corresponding switching frequency 00 95k 01 97.5k 10 100k 11 102.5k

[0105] That is, if the level of Address B is low and the level of Address A is low, the physical address is 00, and the corresponding switching frequency is 95k. Accordingly, the MCU sends a PWM signal indicating a switching frequency of 95k to the powered-on power supply with a physical address of 00; if the level of Address B is low and the level of Address A is high (or floating), the physical address is 01, and the corresponding switching frequency is 97.5k. Accordingly, the MCU sends a PWM signal indicating a switching frequency of 97.5k to the powered-on power supply with a physical address of 01; if the level of Address B is high (or floating) and the level of Address A is low, the physical address is 10, and the corresponding switching frequency is 100k. Accordingly, the MCU sends a PWM signal indicating a switching frequency of 100k to the powered-on power supply with a physical address of 10; if the level of Address B is high (or floating) and the level of Address A is high (or floating), the physical address is 11, and the corresponding switching frequency is 102.5k. Accordingly, the MCU sends a PWM signal indicating a switching frequency of 102.5k to the powered-on power supply with a physical address of 11.

[0106] Figure 12 FIG. is a schematic structural diagram of another exemplary power supply driving circuit provided by an embodiment of the present disclosure. Refer to Figure 12 , in another example, the load system reads or identifies the levels of Address A and Address B through the MCU to determine the physical address. The MCU allocates the switching frequency according to different physical addresses, and then the MCU controls the frequency setting pin of the PWM control chip to set different output switching frequencies.

[0107] Figure 13 FIG. is a schematic structural diagram of yet another exemplary power supply driving circuit provided by an embodiment of the present disclosure. Refer to Figure 13 , in yet another example, the load system directly affects the frequency setting pin in the PWM control chip. The address bits include Address A, Address B, and Address C, which can generally be high level, floating, or low level. The frequency setting pin of the PWM control chip is electrically connected to each address bit of the load system through a resistor. The inconsistent levels of different slot address bits of the load system are used to control different switching frequencies of the powered-on power supplies with different physical addresses.

[0108] Embodiment 2: Figure 14 FIG. is a schematic flowchart of another exemplary power supply driving method provided by an embodiment of the present disclosure. Refer to Figure 3 and Figure 14 , the power supply driving process is as follows:

[0109] Step 1401, the load system reads the number of powered-on power supplies.

[0110] Step 1402: Allocate corresponding switching frequencies to the in-place power supplies equal to the number of in-place power supplies according to a preset rule. Here, the preset rule means to determine a number of switching frequencies that are evenly distributed within the range of the maximum and minimum switching frequencies of the parallel power supply device. The magnitude of the offset (frequency interval value) of the switching frequencies between each in-place power supply is preset in advance and is bound to the slot (physical address).

[0111] Step 1403: Transmit the switching frequency to the in-place power supply via a communication bus or a hardware signal.

[0112] Step 1404: The in-place power supply is driven according to the required switching frequency.

[0113] Figure 15 The structural schematic diagram of an exemplary power supply driving circuit provided by an embodiment of the present disclosure. Refer to Figure 15 , in one example, the load system identifies the total number of in-place power supplies inserted into each slot, and allocates different switching frequencies to each slot according to a preset rule, that is, the load system outputs a level or a PWM control signal to the power supply interface, and this signal is filtered to a stable level and sent to the frequency setting pin of the PWM control chip, thereby affecting the switching frequency of the in-place power supply.

[0114] Embodiment Three: Figure 16 The flowchart of another exemplary power supply driving method provided by an embodiment of the present disclosure. Refer to Figure 4 and Figure 16 , the power supply driving process is as follows:

[0115] Step 1601: Each in-place power supply interacts with the load system via a communication bus. The load system determines the number of in-place power supplies via the communication bus, and each in-place power supply sends its corresponding serial number to the load system via the communication bus.

[0116] Step 1602: The load system can determine the frequency interval value of the in-place power supply and the switching frequency of each in-place power supply according to the order of the serial numbers within the preset switching frequency range. Send the switching frequency to the corresponding in-place power supply via the communication bus.

[0117] Step 1603: Each in-place power supply controls the switching frequency of its power device according to the received switching frequency.

[0118] In the above Embodiment One, Two, and Three of the present disclosure, by determining the number of in-place power supplies in the parallel power supply device and allocating different switching frequencies to each in-place power supply within a certain frequency range, the interference noise spectra of the entire load system are staggered, effectively reducing the electromagnetic interference EMI of the parallel power supply device.

[0119] Those of ordinary skill in the art will understand that all or some of the steps in the methods disclosed above, and the functional modules / units in the systems and devices, can be implemented as software, firmware, hardware, and appropriate combinations thereof. In the hardware implementation, the division between the functional modules / units mentioned above does not necessarily correspond to the division of physical components; for example, one physical component may have multiple functions, or one function or step may be executed by several physical components in cooperation. Some or all of the physical components may be implemented as software executed by a processor, such as a central processing unit, a digital signal processor, or a microprocessor, or as hardware, or as an integrated circuit, such as an application-specific integrated circuit. Such software can be distributed on a computer-readable medium, which may include a computer storage medium (or non-transitory medium) and a communication medium (or transitory medium). As is well known to those of ordinary skill in the art, the term computer storage medium includes volatile and non-volatile, removable and non-removable media implemented in any method or technology for storing information, such as computer-readable instructions, data structures, program modules, or other data. Computer storage media includes, but is not limited to, RAM, ROM, EEPROM, flash memory or other memory technologies, CD-ROM, digital versatile disc (DVD) or other optical disc storage, magnetic cassette, tape, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store the desired information and can be accessed by a computer. In addition, it is well known to those of ordinary skill in the art that a communication medium typically contains computer-readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave or other transmission mechanism, and may include any information delivery medium.

[0120] Example embodiments have been disclosed herein, and although specific terms have been employed, they are used only and should be interpreted only as general descriptive meanings and not for the purpose of limitation. In some instances, it will be apparent to those skilled in the art that, unless otherwise expressly specified, features, characteristics, and / or elements described in connection with a particular embodiment may be used alone or in combination with features, characteristics, and / or elements described in connection with other embodiments. Accordingly, those skilled in the art will understand that various forms and details may be changed without departing from the scope of the disclosure as set forth by the appended claims.

Claims

1. A power supply driving method, wherein, the method includes: determining the number of in-service power supplies in a parallel power supply device; the parallel power supply device includes a plurality of power supplies, and a plurality of the power supplies are in-service power supplies; determining the switching frequency corresponding to each of the in-service power supplies according to the number of in-service power supplies; wherein, the switching frequencies corresponding to any two of the in-service power supplies are different; controlling each of the in-service power supplies to operate at the corresponding switching frequency.

2. The power supply driving method according to claim 1, wherein, the determining the number of in-service power supplies in the parallel power supply device includes: identifying the physical addresses of the in-service power supplies in the parallel power supply device in a load system; determining the total number of the identified physical addresses as the number of in-service power supplies.

3. The power supply driving method according to claim 1, wherein, the determining the number of in-service power supplies in the parallel power supply device includes: identifying the hardware signals of the in-service power supplies in the parallel power supply device and determining the number of in-service power supplies.

4. The power supply driving method according to claim 1, wherein, the determining the number of in-service power supplies in the parallel power supply device includes: receiving the serial numbers sent by the in-service power supplies in the parallel power supply device; determining the total number of the received serial numbers as the number of in-service power supplies.

5. The power supply driving method according to any one of claims 1-4, wherein, the determining the switching frequency corresponding to each of the in-service power supplies according to the number of in-service power supplies includes: determining a frequency interval value according to the number of in-service power supplies and a preset switching frequency range; determining the switching frequency corresponding to each of the in-service power supplies according to the frequency interval value.

6. The power supply driving method according to claim 5, wherein, the determining the frequency interval value according to the number of in-service power supplies and the preset switching frequency range includes: determining a first difference between the maximum switching frequency and the minimum switching frequency in the preset switching frequency range, and a second difference obtained by subtracting one from the number of in-service power supplies; determining the ratio of the first difference to the second difference as the frequency interval value.

7. The power supply driving method according to claim 5, wherein, the determining the switching frequency corresponding to each of the in-service power supplies according to the frequency interval value includes: using the minimum switching frequency in the preset switching frequency range as the switching frequency corresponding to the first in-service power supply; starting from the minimum switching frequency, sequentially increasing the frequency interval value, and determining the switching frequency value corresponding to each increase of the frequency interval value as the switching frequency corresponding to the next in-service power supply.

8. The power supply driving method according to any one of claims 1-4, wherein, the controlling the in-service power supplies to operate at the switching frequency includes: respectively sending each of the switching frequencies to the corresponding in-service power supplies so that the in-service power supplies operate at the switching frequency.

9. An electronic device, including: one or more processors; A memory storing one or more programs, which when executed by the one or more processors cause the one or more processors to implement the power driving method according to any one of claims 1 to 8.

10. A computer-readable medium storing a computer program, which when executed by a processor implements the power driving method according to any one of claims 1 to 8.

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