Active short circuit, motor controller and vehicle

Abstract

The utility model provides an active short circuit, motor controller and vehicle, the circuit includes: power module, be used for driving the drive assembly of power module, first control subassembly and second control subassembly, drive assembly is electrically connected with power module, first control subassembly is electrically connected with drive assembly, and second control subassembly is electrically connected with drive assembly. When the electric driving system of the vehicle is in a fault state, a first active short-circuit control signal is output to the driving assembly, so that the driving assembly controls the power module to enter an active short-circuit state; the second control assembly is electrically connected with the input end of the first control assembly and the input end of the driving assembly and used for outputting a second active short-circuit control signal to the driving assembly when the electric driving system of the vehicle is in the fault state and the first control assembly is in the first failure state, so that the driving assembly controls the power module to enter the active short-circuit state. Therefore, the problem that potential safety hazards are caused due to the fact that a control mode in the related technology may fail is solved, multi-path active short circuit is achieved, and safety is improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicles, and more specifically, to an active short-circuit circuit, a motor controller, and a vehicle in the field of vehicles. Background Art

[0002] Active Short Circuit (ASC) is a commonly used safe operating state for electric drive systems.

[0003] In related technologies, the active short-circuit protection function is realized by controlling the low-voltage side main control chip uC, such as Figure 1 As shown, LVPS is the low-voltage power supply from the battery, providing the operating voltage for the main control chip uC; Driver is the drive module, composed of six drive chips, driving the high and low sides of the three phases U, V, and W; Power Module is the power module, consisting of six IGBT (Insulated Gate Bipolar Transistor) chips and their freewheeling diodes forming a three-phase full-bridge inverter structure; M is the drive motor. When the electric drive system needs to enter ASC mode according to the protection strategy, the main control chip uC controls the high and low sides of the three phases U, V, and W in the drive module, so that the upper or lower switching transistors of each phase bridge arm of the power module are turned on simultaneously.

[0004] However, the active short-circuit protection function in the relevant technology may fail to enter ASC mode when the low-voltage power supply LV PS or the main control chip uC malfunctions, thus creating a safety hazard and urgently needing improvement. Utility Model Content

[0005] The utility model provides an active short-circuit circuit, a motor controller and a vehicle. The method solves the problem that the control method of the related technology may fail and thus cause safety hazards. It realizes multi-path active short-circuiting, ensures that the electric drive system reliably enters the ASC mode according to the protection strategy, and improves the system safety.

[0006] In a first aspect, an active short-circuit circuit is provided, the circuit comprising: a power module, a driving component for driving the power module, a first control component and a second control component, wherein:

[0007] The output terminal of the drive component is electrically connected to the input terminal of the power module;

[0008] The first control component is electrically connected to an input terminal of the drive component. When the electric drive system of the vehicle is in a fault state, the first control component outputs a first active short-circuit control signal to the drive component, so that the drive component controls the power module to enter an active short-circuit state according to the first active short-circuit control signal.

[0009] The second control component is electrically connected to the input ends of the first control component and the drive component respectively. The second control component is used to output a second active short-circuit control signal to the drive component when the electric drive system of the vehicle is in the fault state and the first control component is in the first failure state, so that the drive component controls the power module to enter the active short-circuit state according to the second active short-circuit control signal.

[0010] The above technical solution solves the problem that the control method of related technologies may fail, thus causing safety hazards. It realizes multi-path active short circuit, ensures that the electric drive system reliably enters ASC mode according to the protection strategy, and improves system safety.

[0011] In conjunction with the first aspect, in some possible implementations, the aforementioned active short-circuit circuit further includes:

[0012] A first power supply component is electrically connected to the first control component, and the first power supply component is used to supply power to the first control component.

[0013] Through the above technical solution, the first power supply component can provide working voltage to the first control component, and the capacity of the first power supply component can be selected according to the needs, which has a certain degree of flexibility and is suitable for different application scenarios and needs.

[0014] In combination with the first aspect and the above-described implementation methods, in some possible implementation methods, the aforementioned active short-circuit circuit further includes:

[0015] The second power supply component is electrically connected to the first control component and the second control component respectively. The second power supply component is used to supply power to the first control component or the second control component when the first power supply component is in a second failure state.

[0016] The above technical solution, which designs a dual power supply, can provide a backup power supply. Even if the first power supply component fails or malfunctions, the second power supply component can continue to supply power to the first or second control component, thereby ensuring the continuous and stable operation of the control component.

[0017] In combination with the first aspect and the above implementation methods, in some possible implementation methods, the voltage output range of the second power supply component is greater than the voltage output range of the first power supply component.

[0018] Through the above technical solution, since the voltage output range of the second power supply component is greater than that of the first power supply component, the second power supply component can provide a more stable operating voltage and has wider adaptability. Different control components may require different operating voltages, and the wide voltage output range of the second power supply component can meet various different operating voltage requirements, making it suitable for more application scenarios.

[0019] In combination with the first aspect and the above implementation methods, in some possible implementation methods, the power module includes multiple bridge arms, wherein each bridge arm includes an upper bridge arm switch and a lower bridge arm switch.

[0020] Through the above technical solution, the power module adopts a multi-bridge arm design to achieve higher power density. Each bridge arm can independently perform power switch control, thereby achieving higher power output in a limited space. Each bridge arm includes an upper bridge arm switch tube and a lower bridge arm switch tube, which can realize power switch control in two directions. By simultaneously opening the upper bridge arm and closing the lower bridge arm, or simultaneously opening the lower bridge arm and closing the upper bridge arm, an active short-circuit function can be achieved.

[0021] In combination with the first aspect and the above implementation methods, in some possible implementation methods, the driving component integrates an ASC function pin.

[0022] Through the above technical solution, the drive component integrates an ASC function pin, which improves the ease of use of the product. By rationally applying the ASC mode in the motor system, when the motor controller enters the ASC mode, it can generate reverse braking torque, thereby optimizing motor control and protection.

[0023] In combination with the first aspect and the above-described implementation methods, in some possible implementation methods, the aforementioned active short-circuit circuit further includes:

[0024] An alarm component is connected to the first control component and the second control component respectively. The alarm component is used to perform acoustic alarm and / or optical alarm when the first control component outputs a first active short-circuit control signal or the second control component outputs a second active short-circuit control signal.

[0025] Through the above technical solution, when the control component outputs an active short-circuit signal, timely acoustic and / or optical alarms are used to prevent personnel from being injured, remind users to take measures, and also prevent further damage to the electric drive system, thereby improving the reliability and stability of the system and enhancing the user experience.

[0026] In combination with the first aspect and the above-described implementation methods, in some possible implementation methods, the aforementioned active short-circuit circuit further includes:

[0027] A communication component is connected to the first control component and the second control component respectively. The communication component is used to send the fault status to a preset mobile terminal when the first control component outputs a first active short-circuit control signal or when the second control component outputs a second active short-circuit control signal.

[0028] Through the above technical solution, the communication component can immediately send the fault status to the preset mobile terminal when the control component outputs an active short-circuit control signal, which shortens the time for transmitting fault information, makes it easier for users to take corresponding measures in a timely manner, and improves the efficiency and accuracy of fault handling.

[0029] According to the active short-circuit circuit of this embodiment, a first control component outputs a first active short-circuit control signal to the drive component when the vehicle's electric drive system is in a fault state, and the drive component controls the power module to enter an active short-circuit state; a second control component outputs a second active short-circuit control signal to the drive component when the vehicle's electric drive system is in a fault state and the first control component is in a first failure state, and the drive component controls the power module to enter an active short-circuit state. This solves the problem that control methods in related technologies may fail, leading to safety hazards, and achieves multi-path active short circuit, ensuring that the electric drive system reliably enters ASC mode according to the protection strategy, thus improving system safety.

[0030] Secondly, a motor controller is provided, including the active short-circuit circuit described in the above embodiments.

[0031] According to the motor controller of this utility model embodiment, the above-mentioned active short-circuit circuit solves the problem that the control method of related technologies may fail, thereby causing safety hazards. It realizes multi-path active short circuit, ensures that the electric drive system reliably enters ASC mode according to the protection strategy, and improves system safety.

[0032] Thirdly, a vehicle is provided, including the motor controller described in the above embodiments.

[0033] The vehicle according to the present invention, through the above-mentioned motor controller, solves the problem that the control method of related technologies may fail, thereby causing safety hazards, realizes multi-path active short circuit, ensures that the electric drive system reliably enters ASC mode according to the protection strategy, and improves system safety. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the main control chip uC controlling the ASC functional circuit in the related art;

[0035] Figure 2 A schematic structural diagram of an active short-circuit circuit provided according to an embodiment of the present utility model;

[0036] Figure 3 This is a schematic structural diagram of an active short-circuit circuit with an additional power supply component according to an embodiment of the present utility model;

[0037] Figure 4 Schematic diagram of the structure of an active short-circuit circuit according to an embodiment of the present invention. DETAILED DESCRIPTION

[0038] The following will clearly and thoroughly describe the technical solutions of the present invention in conjunction with the accompanying drawings. In the description of the embodiments of the present invention, unless otherwise specified, " / " means or, for example, A / B can mean A or B: "and / or" in the text is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present invention, "multiple" means two or more than two.

[0039] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to imply or suggest relative importance or implicitly indicate the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0040] Before introducing the active short-circuit circuit of the embodiment of the present application, the structure and working principle of the motor controller related to the present application are first introduced.

[0041] Specifically, the motor controller, as the core component of the electric vehicle's motor system, has the function of realizing the mutual conversion between direct current and alternating current. When the electric vehicle is driving normally, it can invert the direct current of the power battery into three-phase alternating current, provide power for the drive motor and control the motor output torque to drive the vehicle; when the electric vehicle is coasting or braking, the motor controller can control the drive motor to operate in the feeding mode, converting kinetic energy into electrical energy to charge the power battery, thereby improving the electric vehicle's range.

[0042] The motor controller mainly uses a three-phase bridge inverter to realize the conversion between DC and AC. According to the control principle of the three-phase bridge inverter circuit, during normal operation, in a sinusoidal cycle, each bridge arm switch tube is turned on for half a cycle, and the upper and lower bridge arm switches of the same phase are alternately turned on. The upper and lower switches of the same-phase bridge arm cannot be turned on at the same time, otherwise it will cause a short circuit on the DC side power supply; however, when the motor system enters the active short-circuit mode, the upper or lower switch tubes of the three-phase bridge arm will be turned on at the same time.

[0043] The automotive functional safety standard ISO 26262 requires that when a fault occurs in the electric drive system or other vehicle systems (such as the battery, DC-DC converter, on-board charger, vehicle controller, etc.), the motor controller, upon receiving the fault information, should respond promptly to put the electric drive system into a safe operating state to prevent injury to personnel and, at the same time, to minimize the possibility of further damage to the electric drive system. The triggering of the safe operating state must be based on the system architecture, software architecture, and hardware architecture. Different faults require consideration of the time and location of the fault, as well as functional safety information, to select whether to trigger the corresponding safe operating state at the software or hardware level.

[0044] Active short circuit is a commonly used safe operating state for electric drive systems. It is achieved by turning off the three switches of the upper bridge arm of the power module and turning on the three switches of the lower bridge arm, or by turning on the three switches of the upper bridge arm of the power module and turning off the three switches of the lower bridge arm, thus short-circuiting the three phases (UVW) of the motor. This prevents the AC and DC circuits from forming an effective loop, thereby achieving the safe operating state of active short circuit protection.

[0045] Those skilled in the art will understand that the currently commonly used active short-circuit circuits, such as Figure 1 As shown, when the electric drive system needs to enter ASC mode according to the protection strategy, the main control chip uC controls the high and low sides of the U, V, and W phases in the drive module, so that the upper or lower switching transistors of each phase bridge arm of the power module are turned on simultaneously. However, this control method may fail in some cases, such as when the low-voltage power supply LVPS or the main control chip uC malfunctions, the system will be unable to enter ASC mode, thus creating a safety hazard.

[0046] Therefore, this invention proposes an active short-circuit circuit. A first control component outputs a first active short-circuit control signal to the drive component when the vehicle's electric drive system is in a fault state, and the drive component controls the power module to enter an active short-circuit state. A second control component outputs a second active short-circuit control signal to the drive component when the vehicle's electric drive system is in a fault state and the first control component is in a first failure state, and the drive component controls the power module to enter an active short-circuit state. This solves the problem of potential control failures in related technologies, which could lead to safety hazards. It achieves multi-path active short-circuiting, ensuring the electric drive system reliably enters ASC mode according to the protection strategy, thus improving system safety.

[0047] It is understandable that the specific conditions for entering the active short-circuit mode vary from manufacturer to manufacturer. This application only discusses the working process of the electric drive system after it meets the conditions for entering the active short-circuit state.

[0048] Specifically, Figure 2This is a schematic diagram of an active short-circuit circuit provided for an embodiment of the present invention.

[0049] For example, Figure 2 As shown, the active short-circuit circuit 10 includes: a power module 100, a drive component 200, a first control component 300, and a second control component 400.

[0050] Among them, the drive component 200 is used to drive the power module 100, and the output end of the drive component 200 is electrically connected to the input end of the power module 100; the first control component 300 is electrically connected to the input end of the drive component 200, and when the vehicle's electric drive system is in a fault state, the first control component 300 outputs a first active short-circuit control signal to the drive component 200, so that the drive component 200 controls the power module 100 to enter an active short-circuit state according to the first active short-circuit control signal; the second control component 400 is electrically connected to the input ends of the first control component 300 and the drive component 200 respectively, and the second control component 400 is used to output a second active short-circuit control signal to the drive component 200 when the vehicle's electric drive system is in a fault state and the first control component 300 is in a first failure state, so that the drive component 200 controls the power module 100 to enter an active short-circuit state according to the second active short-circuit control signal.

[0051] Optionally, in some embodiments, Figure 2 As shown, the power module 100 can be composed of multiple IGBT chips and their freewheeling diodes to form a three-phase full-bridge inverter structure. The power module 100 includes multiple bridge arms, where each bridge arm includes an upper bridge arm switch tube and a lower bridge arm switch tube. The drive component 200 can be composed of multiple driver chips, divided into three-phase high-side and low-side drivers: U, V, and W. The drive component 200 also integrates an ASC function pin on the high-voltage side for forcibly opening the power switch when a fault occurs in the electric drive system. This function does not require the design of a dedicated external circuit and can adopt an existing single-channel high-voltage gate driver, thereby simplifying system design, reducing size, and lowering costs.

[0052] Preferably, the first control component 300 can be the main control chip uC in the prior art, and the second control component 400 can be a high-voltage side microcontroller, without specific limitations.

[0053] Specifically, such as Figure 2As shown, when the vehicle's electric drive system is in a fault state and the first control component 300 is in a normal working state, the first control component 300 outputs a first active short-circuit control signal to the drive component 200 and controls the U, V, and W three-phase high-side and low-side drive in the drive component 200, so that the upper switch tubes of each phase bridge arm in the power module 100 are simultaneously turned on and the lower switch tubes are simultaneously turned off, or the lower switch tubes of each phase bridge arm are simultaneously turned on and the upper switch tubes are simultaneously turned off, thereby realizing the active short-circuit function.

[0054] Furthermore, when the vehicle's electric drive system is in a fault state and the first control component 300 is in a first failure state, the second control component 400 outputs a second active short-circuit control signal to the drive component 200, causing the upper switch tubes of each phase bridge arm in the power module 100 to be turned on simultaneously and the lower switch tubes to be turned off simultaneously, or causing the lower switch tubes of each phase bridge arm to be turned on simultaneously and the upper switch tubes to be turned off simultaneously, thereby realizing the active short-circuit function.

[0055] Furthermore, in some embodiments, Figure 3 As shown, the above-mentioned active short-circuit circuit 10 further includes: a first power supply component 500, which is electrically connected to the first control component 300, and is used to supply power to the first control component 300.

[0056] Optionally, the first power supply component 500 can be a low-voltage power source from a storage battery, without specific limitations.

[0057] Specifically, the first power supply component 500 is electrically connected to the first control component 300 and provides operating voltage to the first control component 300, thereby maintaining the normal operation of the first control component 300. The capacity of the first power supply component 500 can be selected according to actual needs in this embodiment.

[0058] Furthermore, in some embodiments, such as Figure 3 As shown, the above-mentioned active short-circuit circuit 10 further includes: a second power supply component 600, which is electrically connected to the first control component 300 and the second control component 400 respectively. The second power supply component 600 is used to supply power to the first control component 300 or the second control component 400 when the first power supply component 500 is in a second failure state.

[0059] Optionally, the second power supply component 600 can be a high-voltage backup power supply, without specific limitations.

[0060] Specifically, the second power supply component 600 is electrically connected to the first control component 300 and the second control component 400, respectively, so that when the first power supply component 500 is in a failed state, that is, when the first power supply component 500 is malfunctioning, the first control component 300 and the second control component 400 are provided with working voltage, thereby ensuring the continuous and stable operation of the control component.

[0061] Furthermore, in some embodiments, the voltage output range of the second power supply component 600 is greater than the voltage output range of the first power supply component 500 .

[0062] Specifically, because the second power supply assembly 600 has a wider voltage output range than the first power supply assembly 500, it can provide a more stable operating voltage and has wider adaptability. Different control components may require different operating voltages, and the wide voltage output range of the second power supply assembly 600 can meet various operating voltage requirements and is suitable for a wider range of application scenarios.

[0063] Furthermore, in some embodiments, the above-mentioned active short-circuit circuit 10 also includes: an alarm component (not shown in the figure), which is connected to the first control component 300 and the second control component 400 respectively, and the alarm component is used to perform acoustic alarm and / or optical alarm when the first control component 300 outputs the first active short-circuit control signal, or when the second control component 400 outputs the second active short-circuit control signal.

[0064] The alarm method of the present application can be to control the vehicle's acoustic alarm device to emit an alarm sound, such as a beeping sound, or a voice broadcast, such as the current vehicle's electric drive system is in a fault state and the ASC function has been activated. The alarm can also be issued through an optical alarm device, such as by flashing the indicator light inside the vehicle, the flashing type can be pre-set to correspond to the situation, or through an indicator on the vehicle's display screen.

[0065] During the specific implementation process, when the first control component 300 outputs the first active short-circuit control signal, or when the second control component 400 outputs the second active short-circuit control signal, an alarm can be issued only through the acoustic alarm device or the optical alarm device, or a reminder can be issued simultaneously through the acoustic alarm device or the optical alarm device, which is not specifically limited here.

[0066] Furthermore, in some embodiments, the above-mentioned active short-circuit circuit 10 also includes: a communication component (not shown in the figure), which is connected to the first control component 300 and the second control component 400 respectively, and the communication component is used to send a fault status to a preset mobile terminal when the first control component 300 outputs a first active short-circuit control signal, or when the second control component 400 outputs a second active short-circuit control signal.

[0067] The preset mobile terminal may be a mobile phone or other handheld communication device with a radio shortwave communication function, which is not specifically limited here.

[0068] Specifically, the communication component can immediately send the fault status to the preset mobile terminal when the control component outputs an active short-circuit control signal, shortening the time to convey fault information, facilitating users to take corresponding measures in a timely manner, improving the efficiency and accuracy of fault handling, and enhancing the user experience.

[0069] In order to facilitate those skilled in the art to more clearly understand the active short-circuit circuit 10 of the embodiment of the present application, Figure 4 A detailed description is given, in which Figure 4 In the figure, LV PS is the low-voltage power supply, HV Backup PS is the high-voltage backup power supply, uC is the main control chip, HV MCU is the high-voltage side microcontroller, Driver is the drive module, Power Module is the power module, and M is the drive motor.

[0070] As the first embodiment of this application, Figure 4 As shown, when the vehicle's electric drive system is in a fault state and the main control chip uC and the low-voltage power supply LVPS are in normal working state, the low-voltage power supply LVPS provides operating voltage for the main control chip uC, and the main control chip uC outputs an active short-circuit control signal to the driver module Driver and controls the U, V, and W three-phase high-side and low-side drivers in the driver module Driver, so that the upper switch tubes of each phase bridge arm in the power module Power Module are turned on at the same time and the lower switch tubes are turned off at the same time, or the lower switch tubes of each phase bridge arm are turned on at the same time and the upper switch tubes are turned off at the same time, thereby realizing the active short-circuit function.

[0071] As a second embodiment of this application, Figure 4 As shown, when the vehicle's electric drive system is in a fault state and the low-voltage power supply LV PS is in a failed state, the high-voltage backup power supply HV Backup PS provides the operating voltage for the main control chip uC. The main control chip uC outputs an active short-circuit control signal to the driver module Driver and controls the U, V, and W three-phase high-side and low-side drivers in the driver module Driver, so that the upper switch tubes of each phase bridge arm in the power module Power Module are turned on at the same time and the lower switch tubes are turned off at the same time, or the lower switch tubes of each phase bridge arm are turned on at the same time and the upper switch tubes are turned off at the same time, thereby realizing the active short-circuit function.

[0072] As the third embodiment of this application, Figure 4As shown in the figure, when the vehicle's electric drive system is in a fault state and the low-voltage power supply LV PS and the main control chip uC are both in a failed state, the high-voltage backup power supply HV Backup PS provides operating voltage for the high-voltage side microcontroller HV MCU, outputs a high level or a low level (depending on the function of the driver chip ASC pin) to the corresponding driver chip, controls the power module Power Module three-phase high-side or low-side switch tube to turn on, and realizes the ASC function.

[0073] According to the active short-circuit circuit of the embodiment of the present invention, a first control component is used to output a first active short-circuit control signal to the drive component when the vehicle's electric drive system is in a fault state, and the drive component is used to control the power module to enter an active short-circuit state. A second control component is used to output a second active short-circuit control signal to the drive component when the vehicle's electric drive system is in a fault state and the first control component is in a first failure state, and the drive component is used to control the power module to enter an active short-circuit state. This solves the problem that the control method of the related art may fail and thus cause safety hazards, realizes multi-path active short-circuiting, ensures that the electric drive system reliably enters the ASC mode according to the protection strategy, and improves system safety.

[0074] An embodiment of the present utility model provides a motor controller, comprising the active short-circuit circuit of the above embodiment.

[0075] According to the motor controller of the embodiment of the present invention, the above-mentioned active short-circuit circuit solves the problem that the control method of the related technology may fail and thus cause safety hazards, realizes multi-path active short-circuiting, ensures that the electric drive system reliably enters the ASC mode according to the protection strategy, and improves system safety.

[0076] An embodiment of the present invention further provides a vehicle, comprising the motor controller of the above embodiment.

[0077] According to the vehicle of the embodiment of the present invention, the above-mentioned motor controller solves the problem that the control method of the related technology may fail and thus cause safety hazards, realizes multi-path active short circuit, ensures that the electric drive system reliably enters the ASC mode according to the protection strategy, and improves system safety.

[0078] Through the description of the above implementation methods, technical personnel in the relevant field can understand that for the convenience and simplicity of description, only the division of the above-mentioned functional modules is used as an example. In actual applications, the above-mentioned functions can be assigned to different functional modules as needed, that is, the internal structure of the circuit can be divided into different functional modules to complete all or part of the functions described above.

[0079] In the embodiments provided by this utility model, it should be understood that the disclosed circuits can be implemented in other ways. For example, the circuit embodiments described above are merely illustrative. For instance, the division of modules or units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another circuit, or some features may be ignored or not executed. Furthermore, the mutual coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection of circuits or units, and may be electrical, mechanical, or other forms.

[0080] The above content is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. An active short-circuit circuit, characterized in that: include: A power module and a driving component for driving the power module, wherein an output end of the driving component is electrically connected to an input end of the power module; a first control component, the first control component being electrically connected to an input end of the drive component, and the first control component outputting a first active short-circuit control signal to the drive component when the electric drive system of the vehicle is in a fault state, so that the drive component controls the power module to enter an active short-circuit state according to the first active short-circuit control signal; as well as A second control component, the second control component is electrically connected to the input ends of the first control component and the drive component respectively, and the second control component is used for outputting a second active short-circuit control signal to the drive component when the electric drive system of the vehicle is in the fault state and the first control component is in the first failure state, so that the drive component controls the power module to enter the active short-circuit state according to the second active short-circuit control signal.

2. The active short-circuit circuit according to claim 1, characterized in that: Also includes: A first power supply component, wherein the first power supply component is electrically connected to the first control component, and the first power supply component is used to supply power to the first control component.

3. The active short-circuit circuit according to claim 2, characterized in that: Also includes: A second power supply component, wherein the second power supply component is electrically connected to the first control component and the second control component respectively, and the second power supply component is used to supply power to the first control component or the second control component when the first power supply component is in a second failure state.

4. The active short-circuit circuit according to claim 3, characterized in that: The voltage output range of the second power supply component is greater than the voltage output range of the first power supply component.

5. The active short-circuit circuit according to claim 1, characterized in that: The power module includes a plurality of bridge arms, wherein each bridge arm includes an upper bridge arm switch tube and a lower bridge arm switch tube.

6. The active short-circuit circuit according to claim 1, characterized in that: The driving component is integrated with an ASC function pin.

7. The active short-circuit circuit according to claim 1, characterized in that: Also includes: An alarm component, wherein the alarm component is connected to the first control component and the second control component respectively, and the alarm component is used to perform an acoustic alarm and / or a visual alarm when the first control component outputs a first active short-circuit control signal or when the second control component outputs a second active short-circuit control signal.

8. The active short-circuit circuit according to any one of claims 1 to 7, characterized in that: Also includes: A communication component, wherein the communication component is connected to the first control component and the second control component respectively, and the communication component is used to send the fault state to a preset mobile terminal when the first control component outputs a first active short-circuit control signal or when the second control component outputs a second active short-circuit control signal.

9. A motor controller, characterized in that: include: An active short-circuit circuit as claimed in any one of claims 1 to 8.

10. A vehicle, characterized in that: include: The motor controller as claimed in claim 9.

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