Inverter high-voltage control system and method, electronic equipment, storage medium and vehicle

Abstract

The invention discloses an inversion high-voltage control system, and relates to the field of vehicle signal acquisition, and the system comprises a filter capacitor, a discharge resistor, a sampling resistor and a circuit which are connected in parallel with a DC bus. The discharge resistor and the thyristor are connected in parallel on the direct current bus; the input end of the circuit and the diode are connected in parallel on a direct-current bus; the output end of the DC / DC circuit is connected with the input end of the power battery; comprising an isolation circuit, a signal conditioning circuit and a judgment circuit, the isolation circuit obtains a DC bus voltage signal sampled by the sampling resistor, and outputs the DC bus voltage signal to the signal conditioning circuit after isolation; the signal conditioning circuit is used for conditioning the sampling signal to generate a first comparison signal and outputting the first comparison signal to the judgment circuit; the DC / DC circuit outputs the voltage state of the power battery, generates a second comparison signal and outputs the second comparison signal to the judgment circuit; and the judgment circuit compares the deviation of the first comparison signal and the second comparison signal, generates a signal for controlling the thyristor, outputs the signal to the base electrode of the thyristor, and controls and conducts the discharge resistor to form the state of a discharge loop.

Description

Technical Field

[0001] This application relates to the field of vehicle signal acquisition, and in particular to an inverter high-voltage control system, an inverter high-voltage control method, electronic equipment, storage medium, and vehicle. Background Technology

[0002] In electric vehicle inverters, voltage acquisition of the DC high voltage is essential for both control and protection purposes; therefore, inverters typically include a high-voltage acquisition circuit. Because inverters contain large high-voltage capacitors, which retain high voltage even after power is cut off, a passive discharge function is necessary. The passive discharge resistor provides a discharge path for the capacitors, ensuring system safety.

[0003] For example, in the Chinese invention patent, titled "A DC High Voltage Signal Acquisition Circuit," application number CN109581043A, the signal acquisition circuit is located between the DC high voltage signal and the microcontroller, used to acquire the DC high voltage signal and transmit the acquired DC high voltage signal to the microcontroller.

[0004] Chinese invention patent, invention title: A passive discharge device and motor controller, application number: CN107257192A, this solution realizes the function of passive discharge by connecting the passive discharge module and the soft start module in series across the two ends of the bus capacitor.

[0005] The above technical solutions are relatively simple and cannot meet the discharge requirements in complex environments. Summary of the Invention

[0006] In view of this, the purpose of the present invention is to provide an inverter high-voltage control system, an inverter high-voltage control method, electronic equipment, storage medium and vehicle, at least to solve the problem that the system will store high-voltage charge after power failure, and direct contact may lead to electric shock risk, to judge the deviation between the bus voltage and the power battery voltage, to achieve closed-loop control of the bus voltage and safe discharge under high-voltage environment.

[0007] This invention provides the following solution:

[0008] According to one aspect of the present invention, an inverter high-voltage control system is provided, comprising:

[0009] The filter capacitor C1, discharge resistor R1, sampling resistor R2 and DC / DC circuit are connected in parallel to the DC bus;

[0010] Among them, the discharge resistor R1 and the thyristor Q1 are connected in series through the emitter and collector and then in parallel on the DC bus;

[0011] The input terminal of the DC / DC circuit is connected in series with diode VD1 and then in parallel to the DC bus.

[0012] The output terminal of the DC / DC circuit is connected to the input terminal of the power battery.

[0013] It also includes isolation circuits, signal conditioning circuits, and judgment circuits;

[0014] The isolation circuit acquires the DC bus voltage signal sampled by the sampling resistor R2, and outputs it to the signal conditioning circuit after isolation.

[0015] The signal conditioning circuit conditions and processes the sampled signal to generate a first comparison signal, which is then output to the judgment circuit.

[0016] The DC / DC circuit outputs the voltage state of the power battery, generates a second comparison signal, and outputs it to the judgment circuit.

[0017] The circuit compares the deviation between the first comparison signal and the second comparison signal, generates a signal to control thyristor Q1, and outputs it to the base of thyristor Q1.

[0018] Controls the conduction state of the emitter and collector of thyristor Q1;

[0019] Specifically, the discharge resistor R1 is controlled to form a discharge circuit based on the signal that generates the control thyristor Q1.

[0020] According to a second aspect of the present invention, an inverter high-voltage control method is provided, comprising:

[0021] Obtain the preset inverter braking torque threshold range information;

[0022] Based on the inverter braking torque threshold range information, obtain the DC bus discharge charge threshold range information;

[0023] Based on the DC bus discharge charge threshold range information, generate information on the total share of charge absorbed by the power battery and the charge consumed by the discharge resistor R1.

[0024] in,

[0025] Obtain operational status information of the power battery's charge absorption;

[0026] Based on the operating status information of the power battery's charge absorption, a corresponding second comparison signal is generated;

[0027] Based on the voltage state sampled by sampling resistor R2, the state information of the accumulated charge on the DC bus is generated;

[0028] Based on the state information of the accumulated charge on the DC bus, a corresponding first comparison signal is generated;

[0029] The circuit determines the signal value deviation between the first comparison signal and the second comparison signal, generates a signal to control the thyristor Q1, and controls the thyristor Q1 to turn on the discharge resistor R1 to form a discharge circuit.

[0030] Furthermore, including:

[0031] Obtain the upper limit threshold of the safe voltage of the DC bus;

[0032] Based on the upper limit threshold of the safe voltage of the DC bus and the working state of the power battery's charge absorption, a DC / DC circuit step-down control strategy is set.

[0033] DC / DC circuit buck control strategy includes controlling the second comparison signal to decrease or increase based on the decrease or increase of the power battery's charge absorption capacity;

[0034] Based on whether the control second comparison signal decreases or increases, the determination circuit obtains information about whether the deviation between the signal values ​​of the first comparison signal and the second comparison signal increases or decreases.

[0035] Based on the information of increasing or decreasing signal value deviation, the window size of the discharge circuit formed by the discharge resistor R1 is controlled by the thyristor Q1.

[0036] Furthermore, the step of controlling the window size of the discharge circuit formed by the discharge resistor R1 and the thyristor Q1 to conduct based on the increase or decrease of the signal value deviation includes:

[0037] The circuit determines that if the deviation between the first comparison signal and the second comparison signal increases, it will provide feedback control to the first comparison signal.

[0038] The first comparison signal for feedback control includes a signal to control thyristor Q1 to turn on in advance based on the increase of the deviation value, which controls thyristor Q1 to conduct discharge resistor R1 to form a discharge circuit and suppress the high level of the sampling voltage on sampling resistor R2.

[0039] It also includes, based on the decrease in the power battery's ability to absorb charge, outputting a signal to control the thyristor Q1 to turn on in advance, controlling the thyristor Q1 to conduct the discharge resistor R1 to form a discharge circuit, and suppressing the low level of the sampling voltage on the sampling resistor R2.

[0040] Furthermore, including:

[0041] Acquire mode command signal;

[0042] The mode command signals include the mode command signal to stop the inverter operation;

[0043] According to the mode command signal, the thyristor Q1 is controlled to turn on the discharge resistor R1 to form a discharge circuit.

[0044] Furthermore, including:

[0045] Based on the DC bus safety voltage upper limit threshold information and the inverter braking torque threshold range information, set the resistance value of discharge resistor R1 and the current withstand value of thyristor Q1.

[0046] Furthermore, including:

[0047] The operating states in which a power battery absorbs charge include:

[0048] Based on the energy storage state, temperature state, and aging state of the power battery, the working state of the power battery absorbing charge is generated.

[0049] A second comparison signal is generated based on the working state of the power battery absorbing charge.

[0050] According to three aspects of the present invention, an electronic device is provided, comprising: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus;

[0051] The memory stores a computer program, which, when executed by the processor, causes the processor to perform the steps of an inverter high-voltage control method.

[0052] According to four aspects of the present invention, a computer-readable storage medium is provided that stores a computer program executable by an electronic device, which, when run on the electronic device, causes the electronic device to perform the steps of an inverter high-voltage control method.

[0053] According to five aspects of the present invention, a vehicle is provided.

[0054] Electronic equipment for implementing a method of inverter high voltage control;

[0055] The processor runs a program, and when the program runs, it executes the steps of an inverter high-voltage control method based on data output from electronic devices.

[0056] A storage medium for storing a program that, when running, executes the steps of an inverter high-voltage control method based on data output from an electronic device.

[0057] The above solution achieves the following beneficial technical effects:

[0058] This application controls the thyristor Q1 to conduct via system shutdown, maintenance, and other mode command signals, so that the discharge resistor R1 reduces the residual voltage of the filter capacitor C1 from several hundred volts to a safe threshold within a few seconds, thus avoiding the risk of electric shock to operators.

[0059] This application sets a safe upper limit threshold for the DC bus voltage. When an overvoltage is detected on the bus, the judgment circuit triggers a discharge circuit to prevent the high voltage generated during braking from damaging power devices such as IGBTs and reduce maintenance costs.

[0060] This application uses the inverter braking torque threshold range information to pre-set the total share of charge (current) that needs to be absorbed or consumed by the power battery and discharge resistor under braking conditions, thereby ensuring stable output braking capability.

[0061] This application monitors the energy storage state, temperature state, and aging state of the power battery to determine the current working state of the power battery's charge absorption, and dynamically adjusts the distribution of the power battery's charge absorption and the charge consumed by the discharge resistor R1. Under the premise of ensuring stable output braking capability, it ensures that the current generated by braking is safely and reliably stored in the power battery first.

[0062] This application uses a judgment circuit to compare the deviation between the first comparison signal and the second comparison signal. The first comparison signal is then controlled by feedback. This includes suppressing the high-order and low-order orders of the sampling voltage on the sampling resistor R2. This reduces the window for the thyristor Q1 to conduct and the discharge resistor R1 to form a discharge circuit, thereby reducing the risk of DC bus charge accumulation due to the decreased charge absorption capacity of the power battery and enhancing the discharge redundancy capability of the discharge resistor R1. Attached Figure Description

[0063] Figure 1 This is a circuit diagram of an inverter high-voltage control system provided by one or more embodiments of the present invention.

[0064] Figure 2 This is a flowchart of an inverter high-voltage control method provided by one or more embodiments of the present invention.

[0065] Figure 3 This is a block diagram of an electronic device structure for an inverter high voltage control method provided in one or more embodiments of the present invention. Detailed Implementation

[0066] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0067] Figure 1 This is a circuit diagram of an inverter high-voltage control system provided by one or more embodiments of the present invention.

[0068] like Figure 1 The system shown includes:

[0069] The filter capacitor C1, discharge resistor R1, sampling resistor R2 and DC / DC circuit are connected in parallel to the DC bus;

[0070] Among them, the discharge resistor R1 and the thyristor Q1 are connected in series through the emitter and collector and then in parallel on the DC bus;

[0071] The input terminal of the DC / DC circuit is connected in series with diode VD1 and then in parallel to the DC bus.

[0072] The output terminal of the DC / DC circuit is connected to the input terminal of the power battery.

[0073] It also includes isolation circuits, signal conditioning circuits, and judgment circuits;

[0074] The isolation circuit acquires the DC bus voltage signal sampled by the sampling resistor R2, and outputs it to the signal conditioning circuit after isolation.

[0075] The signal conditioning circuit conditions and processes the sampled signal to generate a first comparison signal, which is then output to the judgment circuit.

[0076] The DC / DC circuit outputs the voltage state of the power battery, generates a second comparison signal, and outputs it to the judgment circuit.

[0077] The judgment circuit compares the deviation between the first comparison signal and the second comparison signal, generates a signal to control thyristor Q1, and outputs it to the base of thyristor Q1 to control the conduction state of the emitter and collector of thyristor Q1.

[0078] Specifically, the discharge resistor R1 is controlled to form a discharge circuit based on the signal that generates the control thyristor Q1.

[0079] Specifically, vehicle braking involves accumulating a pumped voltage on the DC bus. Releasing the charge on the DC bus generates a back electromotive force, thus achieving braking. The release of charge on the DC bus occurs through the power battery absorbing charge and the discharge resistor consuming charge. A first comparison signal indicates the state of charge accumulation on the DC bus, while a second comparison signal indicates the power battery's charge absorption capacity. For example, when the power battery is at a low voltage, it can be charged with a large current, resulting in a larger second comparison signal (strong charge absorption capacity). Conversely, when the power battery is near full charge, it can only be charged with a small current, such as trickle charging, resulting in a smaller second comparison signal (weak charge absorption capacity). By comparing the deviation between the first and second comparison signals, a signal is generated to control the thyristor Q1, indicating that the remaining charge is consumed by the discharge resistor.

[0080] The first and second comparison signals can be compared using voltage or current signals, depending on the adjustment strategy of the judgment circuit. They can also be digitized and compared numerically.

[0081] Figure 2 This is a flowchart of an inverter high-voltage control method provided by one or more embodiments of the present invention.

[0082] like Figure 2 One inverter high-voltage control method shown includes:

[0083] Step S1: Obtain the preset inverter braking torque threshold range information;

[0084] Step S2: Obtain the DC bus discharge charge threshold range information based on the inverter braking torque threshold range information;

[0085] Step S3: Based on the DC bus discharge charge threshold range information, generate information on the total share of charge absorbed by the power battery and the charge consumed by the discharge resistor R1.

[0086] in,

[0087] Step S301: Obtain the working status information of the power battery absorbing charge;

[0088] Step S302: Generate a corresponding second comparison signal based on the working state information of the power battery absorbing charge;

[0089] Step S4: Generate state information of accumulated charge on the DC bus based on the voltage state sampled by sampling resistor R2;

[0090] Step S5: Generate the corresponding first comparison signal based on the state information of the accumulated charge on the DC bus;

[0091] Step S6: Determine the signal value deviation between the first comparison signal and the second comparison signal obtained by the circuit, and generate a signal to control the thyristor Q1, which is used to control the thyristor Q1 to turn on the discharge resistor R1 to form a discharge circuit.

[0092] Specifically, the matching of the motor and inverter has an upper limit on the braking torque, thereby obtaining information on the DC bus discharge threshold range. Since charge is absorbed or consumed only by the power battery and the discharge resistor on the DC bus, the total share of charge absorbed by the power battery and the total share of charge consumed by the discharge resistor R1 is generated based on the DC bus discharge threshold range.

[0093] Based on the operating status information of the power battery's charge absorption, a corresponding second comparison signal is generated. Based on the status information of the charge accumulated on the DC bus, a corresponding first comparison signal is generated. The difference between the signal values ​​of the first and second comparison signals represents the proportion of charge consumed through the discharge resistor. The signal value of the second comparison signal represents the proportion of charge absorbed by the power battery.

[0094] Furthermore, including:

[0095] Obtain the upper limit threshold of the safe voltage of the DC bus;

[0096] Based on the upper limit threshold of the safe voltage of the DC bus and the working state of the power battery's charge absorption, a DC / DC circuit step-down control strategy is set.

[0097] DC / DC circuit buck control strategy includes controlling the second comparison signal to decrease or increase based on the decrease or increase of the power battery's charge absorption capacity;

[0098] Based on whether the control second comparison signal decreases or increases, the determination circuit obtains information about whether the deviation between the signal values ​​of the first comparison signal and the second comparison signal increases or decreases.

[0099] Based on the information of increasing or decreasing signal value deviation, the window size of the discharge circuit formed by the discharge resistor R1 is controlled by the thyristor Q1.

[0100] Specifically, if the charge accumulated on the DC bus due to braking is not released in time, it may generate very high voltage, causing device breakdown. Therefore, a safe voltage upper limit threshold can be set according to the device's withstand design. The DC bus carries DC current, and DC current is also used to charge the power battery. The power battery is charged after being stepped down by a DC / DC circuit according to a certain step-down ratio or step-down threshold. The DC / DC circuit also includes charging current control, such as reducing the charging current as the power battery voltage increases.

[0101] The DC / DC circuit buck control strategy includes controlling the second comparison signal to decrease or increase based on the decrease or increase of the power battery's charge absorption capacity. That is, when the second comparison signal decreases, the signal value deviation between the first comparison signal and the second comparison signal increases, requiring more discharge from the discharge resistor.

[0102] When the voltage on the DC bus is too low to charge the power battery after being stepped down by the DC / DC circuit, the discharge circuit is formed by controlling the thyristor Q1 to discharge and dissipate the charge, preventing residual charge on the capacitor C1 and increasing the risk of electric shock.

[0103] The discharge resistor R1 forms a discharge circuit to dissipate energy. This operation is initiated when the DC bus voltage is too high, and also when the DC bus voltage is too low, as the power battery cannot be properly charged. When the DC bus voltage is low, after the discharge circuit has completed dissipation, the thyristor Q1 is returned to the off state, awaiting the next pumping voltage. In other words, the circuit determines whether to initiate the discharge circuit only when the DC bus voltage is low, and only initiates it when the DC bus voltage is too high. This creates a window for the discharge resistor R1 to form the discharge circuit.

[0104] Furthermore, depending on whether the signal value deviation increases or decreases, the window size for controlling the thyristor Q1 to conduct and the discharge resistor R1 to form the discharge circuit includes:

[0105] The circuit determines that if the deviation between the first comparison signal and the second comparison signal increases, it will provide feedback control to the first comparison signal.

[0106] The first comparison signal for feedback control includes a signal to control thyristor Q1 to turn on in advance based on the increase of the deviation value, which controls thyristor Q1 to conduct discharge resistor R1 to form a discharge circuit and suppress the high level of the sampling voltage on sampling resistor R2.

[0107] It also includes, based on the decrease in the power battery's ability to absorb charge, outputting a signal to control the thyristor Q1 to turn on in advance, controlling the thyristor Q1 to conduct the discharge resistor R1 to form a discharge circuit, and suppressing the low level of the sampling voltage on the sampling resistor R2.

[0108] Specifically, if the deviation between the first and second comparison signals increases, the battery's ability to absorb charge decreases, resulting in a lower proportion of charge being absorbed in the total power consumption. This means the discharge resistor needs to bear more of the power consumption load. Based on this, a feedback signal is generated to control the first comparison signal to decrease; that is, the upper limit threshold of the DC bus safety voltage is lowered, suppressing high sampling voltage levels on the sampling resistor R2 and increasing redundancy against braking surges.

[0109] A decrease in the charge absorption capacity of a power battery means an increase in battery voltage, making it unable to accept lower charging voltages or tolerate higher charging currents. Therefore, suppressing the low voltage level sampled on sampling resistor R2 reduces the chance of storing useless charge on capacitor C1.

[0110] The low-order voltage across sampling resistor R2 can be understood as follows: Since the DC / DC circuit charges the power battery by stepping down the voltage at a certain ratio, if the input voltage of the DC / DC circuit is too low after the power battery voltage rises, it will be unable to charge the power battery efficiently. This charge remains on capacitor C1, creating a risk of electric shock or leakage. Suppressing the low-order voltage across sampling resistor R2, i.e., raising this threshold, allows the charge remaining on capacitor C1 to be dissipated earlier through the discharge resistor.

[0111] Furthermore, including:

[0112] Acquire mode command signal;

[0113] The mode command signals include the mode command signal to stop the inverter operation;

[0114] According to the mode command signal, the thyristor Q1 is controlled to turn on the discharge resistor R1 to form a discharge circuit.

[0115] Specifically, signals such as vehicle parking and cabinet opening can be used as mode command signals, indicating that maintenance may be required and there is a risk of electric shock. At this time, a mode command signal to stop inverter operation can be generated, directly activating discharge resistor R1 to form a discharge circuit. The current signal input to the base of thyristor Q1 needs to be increased based on whether the current DC bus voltage is closer to the upper limit threshold of the safe voltage.

[0116] Furthermore, including:

[0117] Based on the DC bus safety voltage upper limit threshold information and the inverter braking torque threshold range information, set the resistance value of discharge resistor R1 and the current withstand value of thyristor Q1.

[0118] Specifically, the resistance value of the discharge resistor R1 and the model of the thyristor Q1 are not arbitrarily selected or set; they need to be set according to the upper limit threshold of the DC bus safe voltage and the range of the inverter braking torque threshold. The resistance value of the discharge resistor R1 determines the discharge efficiency, and the current withstand value of the thyristor Q1 determines the ability to achieve the inverter braking torque threshold range.

[0119] Furthermore, including:

[0120] The operating states in which a power battery absorbs charge include:

[0121] Based on the energy storage state, temperature state, and aging state of the power battery, the working state of the power battery absorbing charge is generated.

[0122] A second comparison signal is generated based on the working state of the power battery absorbing charge.

[0123] Specifically, in addition to monitoring the energy storage state (voltage state) of the power battery, it also monitors the temperature state (controlling the reduction of charging current at high temperatures) and the aging state (battery aging increases the risk of breakdown, and the upper limit of charging current decreases). By combining the characteristics of the power battery's energy storage state, temperature state, and aging state, a second comparison signal is generated.

[0124] This solution establishes a dynamic model of inverter braking torque and DC bus charge, combined with power battery state monitoring and a dual closed-loop control strategy, to achieve efficient coordination between energy recovery and overvoltage protection. By optimizing the selection of discharge resistors and thyristors, and introducing mode command priority control, it addresses the issue of high-voltage charge stored after system power failure, which could pose a risk of electric shock upon direct contact. The solution compares the deviation between the bus voltage and the power battery voltage, enabling closed-loop control of the bus voltage and safe discharge under high-voltage conditions.

[0125] Figure 3 This is a block diagram of an electronic device structure for an inverter high voltage control method provided in one or more embodiments of the present invention.

[0126] like Figure 3 As shown, this application provides an electronic device, including: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus;

[0127] The memory stores a computer program, which, when executed by the processor, causes the processor to perform the steps of an inverter high-voltage control method.

[0128] This application also provides a computer-readable storage medium storing a computer program executable by an electronic device, which, when run on the electronic device, causes the electronic device to perform the steps of an inverter high-voltage control method.

[0129] For the sake of simplicity, the method embodiments are described as a series of actions. However, those skilled in the art should understand that the embodiments of the present invention are not limited to the described order of actions, because according to the embodiments of the present invention, some steps can be performed in other orders or simultaneously. Furthermore, those skilled in the art should also understand that the embodiments described in the specification are preferred embodiments, and the actions involved are not necessarily essential to the embodiments of the present invention.

[0130] As can be seen from the above description of the embodiments, those skilled in the art can clearly understand that this application can be implemented by means of software plus necessary general-purpose hardware platforms. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in various embodiments or some parts of the embodiments of this application.

[0131] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An inverter high-voltage control system, characterized in that, The inverter high-voltage control system includes: The filter capacitor (C1), discharge resistor (R1), sampling resistor (R2), and DC / DC circuit are connected in parallel to the DC bus; Among them, the discharge resistor (R1) and the thyristor (Q1) are connected in series through the emitter and collector, and then connected in parallel on the DC bus; The input terminal of the DC / DC circuit is connected in series with a diode (VD1) and then in parallel to the DC bus. The output terminal of the DC / DC circuit is connected to the input terminal of the power battery. It also includes isolation circuits, signal conditioning circuits, and judgment circuits; The isolation circuit obtains the DC bus voltage signal from the sampling resistor (R2), and outputs it to the signal conditioning circuit after isolation; The signal conditioning circuit conditions and processes the sampled signal to generate a first comparison signal, which is then output to the judgment circuit. The DC / DC circuit outputs the voltage state of the power battery, generates a second comparison signal, and outputs it to the judgment circuit. The circuit compares the deviation between the first comparison signal and the second comparison signal to generate a signal to control the thyristor (Q1), which is then output to the base of the thyristor (Q1) to control the conduction state of the emitter and collector of the thyristor (Q1). Specifically, the discharge resistor (R1) is controlled to form a discharge circuit based on the signal generated by the control thyristor (Q1).

2. A high-voltage inverter control method, characterized in that, Based on the inverter high-voltage control system according to claim 1, the inverter high-voltage control method includes: Obtain the preset inverter braking torque threshold range information; Based on the inverter braking torque threshold range information, obtain the DC bus discharge threshold range information; Based on the DC bus discharge threshold range information, generate information on the total share of charge absorbed by the power battery and the charge consumed by the discharge resistance (R1); in, Obtain operational status information of the power battery's charge absorption; Based on the operating status information of the power battery's charge absorption, a corresponding second comparison signal is generated; Based on the voltage state sampled by the sampling resistor (R2), the state information of the accumulated charge on the DC bus is generated; Based on the state information of the accumulated charge on the DC bus, a corresponding first comparison signal is generated; The circuit determines the signal value deviation between the first comparison signal and the second comparison signal, generates a signal to control the thyristor (Q1), and controls the thyristor (Q1) to turn on the discharge resistor (R1) to form a discharge circuit.

3. The inverter high-voltage control method according to claim 2, characterized in that, Also includes: Obtain the upper limit threshold of the safe voltage of the DC bus; Based on the upper limit threshold of the safe voltage of the DC bus and the working state of the power battery's charge absorption, a DC / DC circuit step-down control strategy is set. DC / DC circuit buck control strategy includes controlling the second comparison signal to decrease or increase based on the decrease or increase of the power battery's charge absorption capacity; Based on whether the control second comparison signal decreases or increases, the determination circuit obtains information about whether the deviation between the signal values ​​of the first comparison signal and the second comparison signal increases or decreases. Based on the information of increasing or decreasing signal value deviation, the window size of the discharge circuit formed by the discharge resistor (R1) is controlled by the thyristor (Q1) to conduct.

4. The inverter high-voltage control method according to claim 3, characterized in that, The method of controlling the window size of the discharge circuit formed by the discharge resistor (R1) for the thyristor (Q1) to conduct based on the increase or decrease of the signal value deviation includes: The circuit determines that if the deviation between the first comparison signal and the second comparison signal increases, it will provide feedback control to the first comparison signal. The first comparison signal of the feedback control includes a signal to control the thyristor (Q1) to turn on in advance according to the increase of the deviation value, control the thyristor (Q1) to conduct the discharge resistor (R1) to form a discharge circuit, and suppress the high level of the sampled voltage on the sampling resistor (R2); It also includes, based on the decrease in the power battery's ability to absorb charge, outputting a signal to control the thyristor (Q1) to turn on in advance, controlling the thyristor (Q1) to conduct the discharge resistor (R1) to form a discharge circuit, and suppressing the low level of the sampled voltage on the sampling resistor (R2).

5. The inverter high-voltage control method according to claim 4, characterized in that, Also includes: Acquire mode command signal; The mode command signals include the mode command signal to stop the inverter operation; According to the mode command signal, the thyristor (Q1) is controlled to turn on the discharge resistor (R1) to form a discharge circuit.

6. The inverter high-voltage control method according to claim 5, characterized in that, Also includes: Based on the DC bus safety voltage upper limit threshold information and the inverter braking torque threshold range information, set the resistance value of the discharge resistor (R1) and the current withstand value of the thyristor (Q1).

7. The inverter high-voltage control method according to claim 6, characterized in that, The operating states in which the power battery absorbs charge include: Based on the energy storage state, temperature state, and aging state of the power battery, the working state of the power battery absorbing charge is generated. A second comparison signal is generated based on the working state of the power battery absorbing charge.

8. An electronic device, characterized in that, include: The processor, communication interface, memory, and communication bus are connected, with the processor, communication interface, and memory communicating with each other via the communication bus. The memory stores a computer program that, when executed by a processor, causes the processor to perform the steps of an inverter high-voltage control method as described in any one of claims 2 to 7.

9. A computer-readable storage medium, characterized in that, The device stores a computer program executable by an electronic device, which, when run on the electronic device, causes the electronic device to perform the steps of an inverter high-voltage control method as described in any one of claims 2 to 7.

10. A vehicle, characterized in that, include: An electronic device for implementing the steps of an inverter high-voltage control method as described in any one of claims 2 to 7; The processor runs a program that, when running, executes the steps of an inverter high-voltage control method as described in any one of claims 2 to 7 from data output by the electronic device. A storage medium for storing a program that, when running, executes the steps of an inverter high-voltage control method as described in any one of claims 2 to 7 on data output from an electronic device.

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