Impedance Regulation Method, Device, Electronic Device and Storage Medium for High-Voltage System

Abstract

An embodiment of the present application provides a method, device, electronic device, and medium for impedance regulation of a high-voltage system. The method includes: presetting a plurality of gears, each gear corresponding to a leakage inductance value of a common-mode inductor in the high-voltage system, and the leakage inductance values corresponding to different gears are different; in response to a collection instruction, obtaining the resonance parameters of the high-voltage system; initially adjusting the gear of the common-mode inductor according to the resonance parameters; and readjusting the gear according to the resonance parameters after the initial gear adjustment. Implementing the above embodiments can avoid testing the entire vehicle under multiple working conditions, saving manpower and material resources.

Description

Technical Field

[0001] The present application relates to the technical field of new energy vehicles, and in particular, to an impedance adjustment method, device, electronic device, and medium for a high-voltage system. Background Art

[0002] Compared with traditional vehicles, new energy vehicles are equipped with high-voltage components such as power batteries, motor controllers, on-vehicle chargers, DC / DC converters, air-conditioning compressors, and heaters. These high-voltage components form the high-voltage system of the vehicle, providing functions such as power supply, energy replenishment, energy conversion, and thermal management for the vehicle. The high-voltage components have an additional high-voltage circuit compared with low-voltage components, and the EMC problem is more prominent. Refer to Figure 1 , and generally, a common-mode inductor + capacitor circuit is used in high-voltage components to filter out common-mode interference and solve the EMC problem of the high-voltage circuit.

[0003] Motor controllers, air-conditioning compressors, and DC / DC converters are power electronic devices, and voltage ripples will be generated on the high-voltage bus during operation. The EMC circuits of each component can be equivalent to LC circuits and there will be resonance phenomena. If the voltage ripple frequency of the bus is the same as the resonance frequency of the EMC circuit of a certain component, resonance / quasi-resonance phenomena will occur. This will generate a large resonance current in the EMC circuit of this component, and the hazards of the resonance current are as follows: 1) The common-mode inductor heats up severely, resulting in damage to the insulation layer of the common-mode inductor coil and an insulation fault in the high-voltage system; 2) The common-mode inductor heats up severely, causing the magnetic core of the common-mode inductor to exceed the Curie temperature, and then demagnetization occurs. The common-mode inductor loses its function, resulting in a reduction in EMC performance; 3) The resonance current will pass through the capacitor, causing the capacitor to heat up severely and having a risk of breakdown; 4) The resonance current will pass through the fuse, causing the fuse to be overcurrent and the fuse to blow.

[0004] In response to the above problems, there is currently no good solution, and mainly by testing the current under different test conditions of the whole vehicle and continuously adjusting the LC parameters to solve the resonance phenomenon. However, it is difficult for the whole vehicle test to cover all conditions, and the resources such as manpower and equipment invested in the test are huge. Summary of the Invention

[0005] In view of this, the purpose of the embodiments of the present application is to provide an impedance adjustment method, device, electronic device, and computer-readable storage medium for a high-voltage system.

[0006] In a first aspect, the embodiments of the present application provide an impedance adjustment method for a high-voltage system, including:

[0007] Pre-set multiple gears, each gear corresponding to a leakage inductance value of a common-mode inductor in the high-voltage system, and the leakage inductance values corresponding to different gears are different;

[0008] In response to the acquisition instruction, obtain the resonance parameters of the high-voltage system;

[0009] Preliminarily adjust the gear position of the common-mode inductor according to the resonance parameters;

[0010] Readjust the gear position according to the resonance parameters after the preliminary adjustment of the gear position.

[0011] In the above implementation process, by setting multiple gear positions, each gear position corresponds to a leakage inductance value of the common-mode inductor in the high-voltage system, the leakage inductance values corresponding to different gear positions are different, and the resonance parameters of the high-voltage system are obtained. The gear position of the common-mode inductor is preliminarily adjusted according to the resonance parameters, and the gear position is readjusted according to the resonance parameters after the preliminary adjustment, which can avoid testing the whole vehicle under multiple working conditions and save manpower and material resources.

[0012] Further, the multiple gear positions include: a first gear position and a second gear position. The initial gear position of the high-voltage system is the first gear position, and the leakage inductance value corresponding to the first gear position is greater than the leakage inductance value corresponding to the second gear position;

[0013] The step of preliminarily adjusting the gear position of the common-mode inductor according to the resonance parameters includes:

[0014] If the resonance parameters exceed the threshold, preliminarily adjust the gear position of the common-mode inductor to the second gear position.

[0015] In the above implementation process, the multiple gear positions set include: a first gear position and a second gear position. The initial gear position of the high-voltage system is the first gear position. As the operating time of the high-voltage system becomes longer, the relevant operating parameters of the high-voltage system will also change. When the resonance parameters are greater than the threshold, the gear position is adjusted so that the heating condition of the common-mode inductor of the high-voltage system after the gear position adjustment is reduced and the EMC performance is lowered. It can avoid testing the whole vehicle under multiple working conditions and save manpower and material resources.

[0016] Further, the multiple gear positions further include: a third gear position; the leakage inductance value of the third gear position is less than the leakage inductance value corresponding to the second gear position;

[0017] After the step of adjusting the gear position of the common-mode inductor to the second gear position, it further includes:

[0018] Re-obtain the resonance parameters of the high-voltage system;

[0019] Judge whether the resonance parameters exceed the threshold;

[0020] If so, preliminarily adjust the gear position of the common-mode inductor to the third gear position.

[0021] During the above implementation process, as the operating time of the high-voltage system becomes longer, the relevant operating parameters of the high-voltage system will also change. After adjusting the high-voltage system to the second gear, continue to monitor the resonance parameters. If the resonance parameters change at this time, continue to adjust the gear of the common-mode inductor. Based on the above embodiments, the leakage inductance value of the high-voltage system can be adjusted flexibly, thereby reducing the heating of the common-mode inductor of the high-voltage system and reducing the degradation of EMC performance. It is possible to avoid testing the entire vehicle under multiple working conditions, saving manpower and material resources.

[0022] Further, the step of readjusting the gear according to the resonance parameters after the preliminary adjustment of the gear includes:

[0023] If the resonance parameters exceed the preset threshold, obtain the resonance parameters after each preliminary adjustment of the gear to obtain a plurality of resonance parameters;

[0024] Determine the minimum resonance parameter among the plurality of resonance parameters;

[0025] Adjust the gear of the common-mode inductor to the gear corresponding to the minimum resonance parameter.

[0026] During the above implementation process, by obtaining the minimum resonance parameter among the plurality of resonance parameters and adjusting the gear of the common-mode inductor to the gear corresponding to the minimum resonance parameter, it is possible to avoid wasting vehicle energy due to multiple adjustments of the high-voltage system, and at the same time, a method closed-loop is achieved.

[0027] In a possible implementation manner, the resonance parameter is a current value.

[0028] In a second aspect, an impedance adjustment device for a high-voltage system provided by an embodiment of the present application includes:

[0029] A setting module for pre-setting a plurality of gears, each gear corresponding to a leakage inductance value of a common-mode inductor in the high-voltage system, and the leakage inductance values corresponding to different gears are different;

[0030] A parameter acquisition module for acquiring the resonance parameters of the high-voltage system in response to a collection instruction;

[0031] An adjustment module for initially adjusting the gear of the common-mode inductor according to the resonance parameters; and re-adjusting the gear according to the resonance parameters after the preliminary adjustment of the gear.

[0032] Further, the plurality of gears include: a first gear and a second gear. The initial gear of the high-voltage system is the first gear, and the leakage inductance value corresponding to the first gear is greater than the leakage inductance value corresponding to the second gear;

[0033] The adjustment module is further configured to preliminarily adjust the gear position of the common-mode inductor to the second gear when the resonance parameter exceeds a threshold value.

[0034] Further, the multiple gear positions further include: a third gear position; the leakage inductance value of the third gear position is less than the leakage inductance value corresponding to the second gear position; the adjustment module is further configured to re-acquire the resonance parameter of the high-voltage system; determine whether the resonance parameter exceeds the threshold value; if so, preliminarily adjust the gear position of the common-mode inductor to the third gear position.

[0035] In a third aspect, an electronic device provided by an embodiment of the present application includes: a memory, a processor, and a computer program stored in the memory and executable on the processor, and when the processor executes the computer program, the steps of the method according to any one of the first aspect are implemented.

[0036] In a fourth aspect, a computer-readable storage medium provided by an embodiment of the present application has instructions stored thereon, and when the instructions are run on a computer, the computer is caused to execute the method according to any one of the first aspect.

[0037] Other features and advantages disclosed in the present application will be described in the subsequent description, or, some features and advantages can be inferred from the description or determined without doubt, or can be known by implementing the above technologies disclosed in the present application.

[0038] To make the above objects, features, and advantages of the present application more obvious and understandable, the following specific preferred embodiments are given in conjunction with the accompanying drawings and are described in detail as follows. Description of the Drawings

[0039] To more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments of the present application will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0040] Figure 1 It is a schematic flowchart of the impedance adjustment method for the high-voltage system provided by the embodiment of the present application;

[0041] Figure 2 It is a schematic structural diagram of the impedance adjustment device for the high-voltage system provided by the embodiment of the present application;

[0042] Figure 3 It is a schematic structural diagram of the electronic device provided by the embodiment of the present application. Detailed Embodiments

[0043] Next, the technical solutions in the embodiments of the present application will be described with reference to the accompanying drawings in the embodiments of the present application.

[0044] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present application, terms such as "first" and "second" are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0045] Embodiment 1

[0046] Refer to Figure 1 , the embodiment of the present application provides an impedance adjustment method for a high-voltage system, including:

[0047] S1: Predetermine multiple gears, each gear corresponding to a leakage inductance value of a common-mode inductor in the high-voltage system, and the leakage inductance values corresponding to different gears are different;

[0048] It can be understood that the common-mode inductor is an adjustable common-mode inductor.

[0049] S2: In response to the acquisition instruction, obtain the resonance parameters of the high-voltage system;

[0050] S3: Initially adjust the gear of the common-mode inductor according to the resonance parameters;

[0051] S4: Readjust the gear according to the resonance parameters after the initial adjustment of the gear.

[0052] In the above embodiment, the high-voltage system is composed of high-voltage components including but not limited to power batteries, motor controllers, on-vehicle chargers, DC / DC converters, air-conditioning compressors, and heaters in new energy vehicles.

[0053] Among them, the acquisition instruction can be actively triggered or passively triggered. The active trigger method can be preset. For example, S2 is executed every preset time. The passive trigger can be triggered by receiving an external instruction.

[0054] In the above implementation process, by setting multiple gears, each gear corresponding to a leakage inductance value of a common-mode inductor in the high-voltage system, and the leakage inductance values corresponding to different gears are different. Since the leakage inductance is related to the resonance frequency, the adjustment of the leakage inductance can be converted into the adjustment of the resonance frequency. Obtain the resonance parameters of the high-voltage system, initially adjust the gear of the common-mode inductor according to the resonance parameters, and readjust the gear according to the resonance parameters after the initial adjustment, which can avoid testing the whole vehicle under multiple working conditions and save manpower and material resources.

[0055] Further, the gear positions include: a first gear position and a second gear position. The initial gear position of the high-voltage system is the first gear position, and the leakage inductance value corresponding to the first gear position is greater than the leakage inductance value corresponding to the second gear position;

[0056] The steps of initially adjusting the gear position of the common-mode inductor according to the resonance parameters include:

[0057] If the resonance parameter exceeds the threshold, the gear position of the common-mode inductor is initially adjusted to the second gear position.

[0058] A first gear position and a second gear position. The initial gear position of the high-voltage system is the first gear position, and the leakage inductance value corresponding to the first gear position is greater than the leakage inductance value corresponding to the second gear position;

[0059] The steps of initially adjusting the gear position of the common-mode inductor according to the resonance parameters include:

[0060] If the resonance parameter exceeds the threshold, the gear position of the common-mode inductor is initially adjusted to the second gear position.

[0061] Further, the gear positions further include: a third gear position; the leakage inductance value of the third gear position is less than the leakage inductance value corresponding to the second gear position;

[0062] After the step of adjusting the gear position of the common-mode inductor to the second gear position, it further includes:

[0063] Re-obtain the resonance parameters of the high-voltage system;

[0064] Judge whether the resonance parameter exceeds the threshold;

[0065] If so, the gear position of the common-mode inductor is initially adjusted to the third gear position.

[0066] It can be understood that the threshold is less than the threshold.

[0067] In the above implementation process, as the operating time of the high-voltage system becomes longer, the relevant operating parameters of the high-voltage system will also change. After adjusting the high-voltage system to the second gear position, continue to monitor the resonance parameters. If the resonance parameters change at this time, continue to adjust the gear position of the common-mode inductor. Based on the above implementation manner, the leakage inductance value of the high-voltage system can be adjusted flexibly, thereby avoiding the reduction of the common-mode inductor heating situation of the high-voltage system and the reduction of the EMC performance. It is possible to avoid testing the whole vehicle under multiple working conditions, saving manpower and material resources.

[0068] It should be noted that the gear positions set in the embodiments of the present application are not limited to two or three. On the basis of the embodiments of the present application, new solutions formed by setting other numbers of gear positions still fall within the protection scope of the present application.

[0069] In a possible implementation manner, the steps of readjusting the gear position according to the resonance parameters after initially adjusting the gear position include:

[0070] If the resonance parameter exceeds a preset threshold, obtain the resonance parameters after each preliminary adjustment of the gear position, and obtain multiple resonance parameters;

[0071] Determine the minimum resonance parameter among the multiple resonance parameters;

[0072] Adjust the gear position of the common mode inductor to the gear position corresponding to the minimum resonance parameter.

[0073] In the above implementation process, by obtaining the minimum resonance parameter among the multiple resonance parameters and adjusting the gear position of the common mode inductor to the gear position corresponding to the minimum resonance parameter, it is possible to avoid wasting vehicle energy by adjusting the high-voltage system multiple times, and at the same time, a method closed-loop is achieved.

[0074] Exemplarily, step 0: The component is powered on and working, and at this time, the adjustable common mode inductor is in the default gear position 1.

[0075] Step 1: The MCU records the current working current sampled by the current sensor as I1. Step 2: The MCU determines whether I1 > the peak working current Ip. If so, it indicates that the EMC circuit may resonate / quasi-resonate, and proceed to step 3; if not, maintain the adjustable common mode inductor at gear position 1. Step 3: The MCU adjusts the gear position of the adjustable common mode inductor to gear position 2 and records the current working current as I2. Step 4: The MCU determines whether I2 > the peak working current Ip. If so, it indicates that the EMC circuit may also resonate / quasi-resonate, and proceed to step 5; if not, maintain the gear position of the adjustable common mode inductor at gear position 2. Step 5: The MCU adjusts the gear position of the adjustable common mode inductor to gear position 3 and records the current working current as I3. Step 6: The MCU determines whether I3 > the peak working current Ip. If so, it indicates that the EMC circuit may also resonate / quasi-resonate, and proceed to step 7; if not, maintain the gear position of the adjustable common mode inductor at gear position 3. Step 7: The MCU takes the minimum value of I1, I2, and I3 and adjusts the adjustable common mode inductor to the corresponding gear position. For example, if I3 is the smallest, the MCU adjusts the adjustable common mode inductor to gear position 3. Step 8: During the operation of the component, the MCU adjusts the gear position of the adjustable common mode inductor in real time according to steps 2 - 4. Step 9: End.

[0076] Embodiment 2

[0077] See Figure 2 , this application embodiment provides an impedance adjustment device for a high-voltage system, including: a setting module 1 for presetting multiple gear positions, each gear position corresponding to a leakage inductance value of a common mode inductor in the high-voltage system, and the leakage inductance values corresponding to different gear positions are different;

[0078] a parameter acquisition module 2 for obtaining the resonance parameters of the high-voltage system in response to an acquisition instruction;

[0079] Adjustment module 3 initially adjusts the gear position of the common mode inductor according to the resonance parameters, and readjusts the gear position according to the resonance parameters after the initial adjustment of the gear position.

[0080] Further, the multiple gear positions include: a first gear position and a second gear position. The initial gear position of the high-voltage system is the first gear position, and the leakage inductance value corresponding to the first gear position is greater than the leakage inductance value corresponding to the second gear position.

[0081] The adjustment module 3 is further configured to initially adjust the gear position of the common mode inductor to the second gear position when the resonance parameters exceed a threshold.

[0082] Further, the multiple gear positions further include: a third gear position; the leakage inductance value of the third gear position is less than the leakage inductance value corresponding to the second gear position; the adjustment module 3 is further configured to re-acquire the resonance parameters of the high-voltage system, determine whether the resonance parameters exceed the threshold, and if so, initially adjust the gear position of the common mode inductor to the third gear position.

[0083] Further, when the resonance parameters exceed a preset threshold, the adjustment module 3 is further configured to obtain the resonance parameters after each initial adjustment of the gear position to obtain multiple resonance parameters, determine the minimum resonance parameter among the multiple resonance parameters, and adjust the gear position of the common mode inductor to the gear position corresponding to the minimum resonance parameter.

[0084] Further, the resonance parameter is the current value of the high-voltage system.

[0085] This application also provides an electronic device. Please refer to Figure 3 , Figure 3 which is a structural block diagram of an electronic device provided by an embodiment of this application. The electronic device may include a processor 31, a communication interface 32, a memory 33, and at least one communication bus 34. Among them, the communication bus 34 is used to realize the direct connection and communication of these components. Among them, the communication interface 32 of the electronic device in the embodiment of this application is used to communicate with other node devices for signaling or data. The processor 31 may be an integrated circuit chip with signal processing capabilities.

[0086] The above-mentioned processor 31 may be a general-purpose processor, including a central processing unit (CPU), a network processor (NP), etc.; it may also be a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components. It can implement or execute the various methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor may be a microprocessor or the processor 31 may also be any conventional processor, etc.

[0087] The memory 33 can be, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Programmable Read-Only Memory (PROM), an Erasable Programmable Read-Only Memory (EPROM), an Electric Erasable Programmable Read-Only Memory (EEPROM), etc. Computer-readable instructions are stored in the memory 33. When the computer-readable instructions are executed by the processor 31, the electronic device can perform each step involved in the above method embodiments.

[0088] Optionally, the electronic device may further include a storage controller and an input / output unit.

[0089] The memory 33, the storage controller, the processor 31, the peripheral interface, and the input / output unit are electrically connected to each other directly or indirectly to achieve data transmission or interaction. For example, these components can be electrically connected to each other through one or more communication buses 34. The processor 31 is configured to execute the executable modules stored in the memory 33, such as software function modules or computer programs included in the electronic device.

[0090] The input / output unit is used to provide the user with the ability to create tasks and create a start optional period or a preset execution time for the task to realize the interaction between the user and the server. The input / output unit can be, but is not limited to, a mouse, a keyboard, etc.

[0091] It can be understood that Figure 3 the structure shown is only schematic, and the electronic device may further include more or fewer components than those shown Figure 3 in the figure, or have a different configuration from that shown Figure 3 in the figure. Figure 3 Each component shown in the figure can be implemented by hardware, software, or a combination thereof.

[0092] The embodiment of the present application further provides a computer-readable storage medium. Instructions are stored on the computer-readable storage medium. When the instructions are run on a computer, the computer program is executed by the processor to implement the method of the method embodiment. To avoid repetition, it will not be elaborated here.

[0093] In several embodiments provided in this application, it should be understood that the disclosed devices and methods can also be implemented in other ways. The device embodiments described above are merely illustrative. For example, the flowcharts and block diagrams in the accompanying drawings show the possible architectures, functions, and operations of devices, methods, and computer program products according to multiple embodiments of this application. In this regard, each block in the flowchart or block diagram can represent a module, a program segment, or a part of code, and a module, a program segment, or a part of code contains one or more executable instructions for implementing the specified logical function. It should also be noted that in some alternative implementations, the functions marked in the blocks may occur in a different order than marked in the accompanying drawings. For example, two consecutive blocks can actually be executed substantially in parallel, and they can sometimes be executed in the reverse order, depending on the functions involved. It should also be noted that each block in the block diagram and / or flowchart, as well as the combination of blocks in the block diagram and / or flowchart, can be implemented by a dedicated hardware-based system for performing the specified functions or actions, or can be implemented by a combination of dedicated hardware and computer instructions.

[0094] In addition, in each embodiment of this application, the functional modules can be integrated together to form an independent part, or each module can exist separately, or two or more modules can be integrated to form an independent part.

[0095] If the function is implemented in the form of a software functional module and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of this technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods in each embodiment of this application. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard disks, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical discs that can store program codes.

[0096] The above are only the embodiments of this application and are not used to limit the protection scope of this application. For those skilled in the art, this application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the protection scope of this application. It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0097] The above are only specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

[0098] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising an..." does not exclude the existence of additional identical elements in the process, method, article or device comprising the element.

Claims

1. A method for impedance regulation of a high-voltage system, characterized in that, Applied to a high-voltage system; the method includes: Pre-setting a plurality of gears, each gear corresponding to a leakage inductance value of a common-mode inductor in the high-voltage system, and different gears corresponding to different leakage inductance values; In response to a collection instruction, obtaining the resonance parameters of the high-voltage system; Preliminarily adjusting the gear of the common-mode inductor according to the resonance parameters; Re-adjusting the gear according to the resonance parameters after the preliminary adjustment of the gear; The step of re-adjusting the gear according to the resonance parameters after the preliminary adjustment of the gear includes: If the resonance parameters exceed a preset threshold, obtaining the resonance parameters after each preliminary adjustment of the gear to obtain a plurality of resonance parameters; Determining the minimum resonance parameter among the plurality of resonance parameters; Adjusting the gear of the common-mode inductor to the gear corresponding to the minimum resonance parameter.

2. The impedance adjustment method of the high-voltage system according to claim 1, characterized in that The plurality of gears include: a first gear and a second gear. The initial gear of the high-voltage system is the first gear, and the leakage inductance value corresponding to the first gear is greater than the leakage inductance value corresponding to the second gear; The step of preliminarily adjusting the gear of the common-mode inductor according to the resonance parameters includes: If the resonance parameters exceed the threshold, preliminarily adjusting the gear of the common-mode inductor to the second gear.

3. The impedance adjustment method of the high-voltage system according to claim 2, wherein The plurality of gears further include: a third gear; the leakage inductance value of the third gear is less than the leakage inductance value corresponding to the second gear; After the step of adjusting the gear of the common-mode inductor to the second gear, it further includes: Re-obtaining the resonance parameters of the high-voltage system; Judging whether the resonance parameters exceed the threshold; If so, preliminarily adjusting the gear of the common-mode inductor to the third gear.

4. The impedance regulation method of the high-voltage system according to any one of claims 1-3, characterized in that, The resonance parameter is the current value of the high-voltage system.

5. An impedance adjustment device for a high-voltage system, characterized in that, Applied to a high-voltage system; includes: A setting module for pre-setting a plurality of gears, each gear corresponding to a leakage inductance value of a common-mode inductor in the high-voltage system, and different gears corresponding to different leakage inductance values; A parameter acquisition module for obtaining the resonance parameters of the high-voltage system in response to a collection instruction; An adjustment module for preliminarily adjusting the gear of the common-mode inductor according to the resonance parameters; and re-adjusting the gear according to the resonance parameters after the preliminary adjustment of the gear; The adjustment module is specifically used for: If the resonance parameters exceed a preset threshold, obtaining the resonance parameters after each preliminary adjustment of the gear to obtain a plurality of resonance parameters; Determining the minimum resonance parameter among the plurality of resonance parameters; Adjusting the gear of the common-mode inductor to the gear corresponding to the minimum resonance parameter.

6. The impedance adjustment device for a high-voltage system according to claim 5, characterized in that The plurality of gears include: a first gear and a second gear. The initial gear of the high-voltage system is the first gear, and the leakage inductance value corresponding to the first gear is greater than the leakage inductance value corresponding to the second gear; The adjustment module is further used to preliminarily adjust the gear of the common-mode inductor to the second gear when the resonance parameters exceed the threshold.

7. The impedance adjustment device of the high-voltage system according to claim 6, characterized in that, The plurality of gears further include: a third gear; the leakage inductance value of the third gear is less than the leakage inductance value corresponding to the second gear; the adjustment module is further used to re-obtain the resonance parameters of the high-voltage system; judge whether the resonance parameters exceed the threshold; if so, preliminarily adjust the gear of the common-mode inductor to the third gear.

8. An electronic device, characterized in that, Includes: A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the processor executes the computer program, the steps of the method according to any one of claims 1-4 are implemented.

9. A computer-readable storage medium, characterized in that Instructions are stored on the computer-readable storage medium, and when the instructions are run on a computer, the computer is caused to execute the method according to any one of claims 1-4.

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