Protection methods, devices, equipment, vehicles and related products for shutdown path detection

Abstract

This disclosure relates to a protection method, apparatus, device, vehicle, and related products for shutdown path detection. The method includes: acquiring the status information of the vehicle's electric drive module; and, if the status information of the electric drive module indicates a short circuit, executing a shutdown path detection protection strategy. Embodiments of this disclosure can avoid thermal safety risks and fuse blowouts caused by direct connection between the upper and lower bridge arms of the electric drive module during shutdown path detection in the event of a short circuit failure in the power module, thereby reducing vehicle damage.

Description

Technical Field

[0001] This disclosure relates to the field of electric drive protection technology, and in particular to a protection method, device, equipment, vehicle and related products for shutdown path detection. Background Technology

[0002] In related technologies, when a power module in an electric drive system fails due to a short circuit, it will generally enter a protection state. For example, when the upper bridge arm power module is short-circuited, the lower bridge arm drive chip will detect a desaturation fault, and the fault response will be to enter a three-phase open circuit or an upper bridge three-phase short circuit. When the lower bridge arm power module is short-circuited, the upper bridge arm drive chip will detect a desaturation fault, and the fault response will be to enter a three-phase open circuit or a lower bridge three-phase short circuit state.

[0003] For electric drive systems, there are generally requirements for torque safety ASIL C or higher, so redundant shutdown circuits are designed for torque protection. These redundant shutdown circuits are typically designed for emergency active short circuits, and a shutdown path detection step is performed in each driving cycle. During shutdown path detection, faults are injected via hardware and software to ensure the shutdown path executes as expected. An emergency active short circuit is unavoidable during shutdown path detection. If a short circuit fails in the power module, performing shutdown path detection can cause a bridge arm shoot-through, leading to thermal safety risks and fuse blowouts, potentially causing even greater damage. Summary of the Invention

[0004] To overcome the problems existing in related technologies, this disclosure provides a protection method, apparatus, equipment, vehicle, medium, product, and chip for shutdown path detection.

[0005] According to a first aspect of the present disclosure, a protection method for disabling path detection is provided, comprising: Obtain the status information of the vehicle's electric drive module; If the status information of the electric drive module indicates a short circuit, a protection strategy to shut down path detection is executed.

[0006] In one embodiment, the protection strategy of executing the shutdown path detection when the state information of the electric drive module is short-circuited includes: Obtain the fault flag of the electric drive module; Obtain the DC bus voltage of the vehicle; Based on the abnormal flag of the electric drive module and the DC bus voltage of the vehicle, a protection strategy for shutting down path detection is executed.

[0007] In one embodiment, the protection strategy of performing shutdown path detection based on the abnormal flag bit of the electric drive module and the DC bus voltage of the vehicle includes: When the abnormal flag bit of the electric drive module is set and the DC bus voltage of the vehicle is greater than or equal to a set threshold, the test procedure for abnormal shutdown path detection is executed. If the abnormal flag bit of the electric drive module is not set, or if the DC bus voltage of the vehicle is less than the set threshold, the test procedure for normal shutdown path detection is executed.

[0008] In one implementation, the test process for performing abnormal shutdown path detection includes: The active short-circuit test of the electric drive module is not performed; only the shutdown test of the electric drive module is performed. Alternatively, neither the active short-circuit test nor the shutdown test may be performed.

[0009] In one implementation, the test process for performing normal shutdown path detection includes: Perform the active short-circuit test and / or shutdown test of the electric drive module normally.

[0010] In one embodiment, the method further includes: If the electric drive module restarts its switching action and the short-circuit fault of the electric drive module is detected to have disappeared, the abnormal flag bit of the electric drive module will be cleared to zero.

[0011] In one embodiment, the method further includes: If the status information of the electric drive module indicates that it is not short-circuited, the active short-circuit test and / or shutdown test of the electric drive module shall be performed normally.

[0012] According to a second aspect of the present disclosure, a protection device for shutting down path detection is provided, comprising: The acquisition module is configured to acquire the status information of the vehicle's electric drive module; The execution module is configured to execute a protection strategy to shut down path detection when the status information of the electric drive module is short-circuited.

[0013] According to a third aspect of the present disclosure, an electronic device is provided, comprising: processor; Memory used to store processor-executable instructions; The processor is configured to execute the executable instructions to implement the method described in any one of the first aspects.

[0014] According to a fourth aspect of the present disclosure, a vehicle is provided, including the electronic equipment described in the third aspect.

[0015] According to a fifth aspect of the present disclosure, a computer-readable storage medium is provided that stores computer program instructions thereon, which, when executed by a processor, implement the steps of the method described in any one of the first aspects.

[0016] According to a sixth aspect of the present disclosure, a computer program product is provided, including a computer program that, when executed by a processor, implements the steps of the method described in any one of the first aspects.

[0017] According to a seventh aspect of the present disclosure, a chip is provided, including a processor and an interface; the processor is configured to read instructions to perform the method described in any one of the first aspects.

[0018] In summary, this disclosure provides a protection method for shutdown path detection, comprising: acquiring the status information of the vehicle's electric drive module; and executing a shutdown path detection protection strategy when the status information of the electric drive module indicates a short circuit. This disclosure can avoid thermal safety risks and fuse blowouts caused by direct connection between the upper and lower bridge arms of the electric drive module during shutdown path detection in the event of a short circuit failure in the power module, thereby reducing vehicle damage.

[0019] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0021] Figure 1 This is a flowchart illustrating a protection method for path cutoff detection according to an exemplary embodiment.

[0022] Figure 2 This is a flowchart illustrating a protection method for path cutoff detection according to an exemplary embodiment.

[0023] Figure 3 This is a flowchart illustrating a protection method for path cutoff detection according to an exemplary embodiment.

[0024] Figure 4 This is a flowchart illustrating a protection method for path cutoff detection according to an exemplary embodiment.

[0025] Figure 5 This is a flowchart illustrating a protection method for path cutoff detection according to an exemplary embodiment.

[0026] Figure 6This is a flowchart illustrating a protection method for path cutoff detection according to an exemplary embodiment.

[0027] Figure 7 This is a flowchart illustrating a protection method for path cutoff detection according to an exemplary embodiment.

[0028] Figure 8 This is a block diagram illustrating a protection device for shutting down path detection according to an exemplary embodiment.

[0029] Figure 9 This is a block diagram illustrating an electronic device according to an exemplary embodiment.

[0030] Figure 10 This is a block diagram illustrating a vehicle according to an exemplary embodiment. Detailed Implementation

[0031] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0032] It should be understood that the term "comprising" and its variations as used herein are open-ended, meaning "including but not limited to". The term "based on" means "at least partially based on". The term "one embodiment" means "at least one embodiment"; the term "another embodiment" means "at least one additional embodiment"; the term "some embodiments" means "at least some embodiments". Definitions of other terms will be given in the following description.

[0033] It should be noted that the concepts of "first," "second," etc., mentioned in this disclosure are used only to distinguish different devices, modules, or units, and are not used to limit the order of functions performed by these devices, modules, or units or their interdependencies. The modifiers "a" and "a plurality of" mentioned in this disclosure are illustrative rather than restrictive, and those skilled in the art should understand that, unless explicitly stated in the context, they should be understood as "one or more." In the description of this disclosure, unless otherwise stated, "a plurality of" means two or more, and other quantifiers are similar; "at least one," "one or more," or similar expressions refer to any combination of these items, including any combination of single or multiple items.

[0034] Although operations or steps are described in a specific order in the accompanying drawings in the embodiments of this disclosure, it should not be construed as requiring these operations or steps to be performed in the specific order or serial order shown, or requiring all of the shown operations or steps to be performed to obtain the desired result. In the embodiments of this disclosure, these operations or steps may be performed serially; they may be performed in parallel; or a portion of these operations or steps may be performed.

[0035] The names of messages or information exchanged between multiple devices in the embodiments of this disclosure are for illustrative purposes only and are not intended to limit the scope of these messages or information. It is understood that before using the technical solutions disclosed in the embodiments of this disclosure, users should be informed of the types, scope of use, and usage scenarios of the personal information involved in this disclosure in an appropriate manner in accordance with relevant laws and regulations, and user authorization should be obtained.

[0036] First, the application scenarios of this disclosure are explained. Shut-off path test (SOPT) may occur during the power-on or power-off process of the electric drive system. During the shutdown path test, faults are injected through hardware and software to ensure that the shutdown path can be executed as expected. During the shutdown path test, the software reads back to determine whether the output of the emergency shutdown module is in the expected safe state. If an abnormality occurs, the relevant fault will be reported. Inevitably, an emergency active short circuit of the electric drive module will occur during the shutdown path test. If the electric drive power module has a short circuit failure, performing shutdown path test under high voltage conditions may cause a shoot-through between the upper and lower bridge arms of the electric drive power module, causing thermal safety risks and fuse blowouts, resulting in the expansion of the fault. Table 1 lists the potential risks of shutdown path test.

[0037] Table 1:

[0038] In view of this, the present disclosure provides a protection method, apparatus, device, vehicle, medium, product, and chip for path shutdown detection, aiming to solve the above-mentioned problems. The present disclosure will now be described in conjunction with specific embodiments.

[0039] Figure 1 This is a flowchart illustrating a protection method for path shutdown detection according to an exemplary embodiment. Figure 1 As shown in the embodiments of this disclosure, a protection method for disabling path detection is provided, which may include the following steps: In step S10, the status information of the vehicle's electric drive module is obtained.

[0040] In this step, the status information of the vehicle's electric drive module is obtained. For example, the status information of the vehicle's electric drive module may include whether it is short-circuited or not.

[0041] In step S20, if the status information of the electric drive module is short-circuited, a protection strategy for shutting down path detection is executed.

[0042] In this step, if the electric drive module's status information indicates a short circuit, a shutdown path detection protection strategy is executed. For example, the electric drive module's fault flag can be obtained first, followed by the vehicle's DC bus voltage. Then, based on the electric drive module's fault flag and the vehicle's DC bus voltage, the shutdown path detection protection strategy is executed.

[0043] In summary, this disclosure provides a protection method for shutdown path detection, comprising: acquiring the status information of the vehicle's electric drive module; and executing a shutdown path detection protection strategy when the status information of the electric drive module indicates a short circuit. This disclosure can avoid thermal safety risks and fuse blowouts caused by direct connection between the upper and lower bridge arms of the electric drive module during shutdown path detection in the event of a short circuit failure in the power module, thereby reducing vehicle damage.

[0044] Figure 2 This is a flowchart illustrating a protection method for path shutdown detection according to an exemplary embodiment. Figure 2 As shown, the protection strategy of executing the shutdown path detection when the status information of the electric drive module is short-circuited may include the following steps: In step S201, the abnormal flag bit of the electric drive module is obtained.

[0045] In this step, the electric drive module fault flag is obtained. For example, the electric drive module fault flag can be obtained from the electric drive controller or the vehicle controller. This flag is 1 when the electric drive module malfunctions (e.g., a short circuit), and 0 when the electric drive module is functioning normally.

[0046] In step S202, the DC bus voltage of the vehicle is obtained.

[0047] In this step, the vehicle's DC bus voltage is obtained.

[0048] In step S203, a protection strategy for shutting down path detection is executed based on the abnormal flag bit of the electric drive module and the DC bus voltage of the vehicle.

[0049] In this step, a shutdown path detection protection strategy is executed based on the electric drive module fault flag and the vehicle's DC bus voltage. For example, an abnormal shutdown path detection test procedure can be executed if the electric drive module fault flag is set (the flag is 1) and the vehicle's DC bus voltage is greater than or equal to a set threshold; a normal shutdown path detection test procedure can be executed if the electric drive module fault flag is not set (the flag is 0) or the vehicle's DC bus voltage is less than the set threshold.

[0050] Figure 3 This is a flowchart illustrating a protection method for path shutdown detection according to an exemplary embodiment. Figure 3 As shown, the protection strategy of performing shutdown path detection based on the abnormal flag bit of the electric drive module and the DC bus voltage of the vehicle may include the following steps: In step S2031, when the abnormal flag bit of the electric drive module is set and the DC bus voltage of the vehicle is greater than or equal to a set threshold, the abnormal shutdown path detection test procedure is executed.

[0051] In this step, when the electric drive module's fault flag is set and the vehicle's DC bus voltage is greater than or equal to a set threshold, an abnormal shutdown path detection test procedure is executed. For example, if the electric drive module's fault flag is set and the vehicle's DC bus voltage is greater than or equal to a set threshold (e.g., 500V), the active short-circuit test of the electric drive module may not be performed; only the shutdown test (three-phase open circuit) may be performed. Alternatively, neither the active short-circuit test nor the shutdown test may be performed. This avoids the possibility of a short circuit in the electric drive module causing a direct connection between the upper and lower bridge arms during shutdown path detection, which could lead to thermal safety risks and fuse blowouts, thereby reducing vehicle damage.

[0052] In step S2032, if the abnormal flag bit of the electric drive module is not set, or if the DC bus voltage of the vehicle is less than the set threshold, the test procedure for normal shutdown path detection is executed.

[0053] In this step, if the electric drive module fault flag is not set, or the vehicle's DC bus voltage is less than a set threshold, a normal shutdown path detection test procedure is executed. For example, even if the electric drive module fault flag is not set, or the vehicle's DC bus voltage is less than a set threshold, a normal active short-circuit test and / or shutdown test of the electric drive module can be performed. Because there is no short circuit in the electric drive module, or even if there is a short circuit but the vehicle's DC bus voltage is less than the set threshold, there will be no thermal safety risk to the vehicle or fuse blowing. Therefore, the shutdown path detection test procedure can be performed normally without concern for safety risks.

[0054] Figure 4 This is a flowchart illustrating a protection method for path shutdown detection according to an exemplary embodiment. Figure 4 As shown, the test process for performing abnormal shutdown path detection may include the following steps: In step S20311, the active short-circuit test of the electric drive module is not performed, and only the shutdown test of the electric drive module is performed; or, neither the active short-circuit test nor the shutdown test is performed.

[0055] In this step, the active short-circuit test of the electric drive module is not performed; only the shutdown test of the electric drive module is performed. Alternatively, neither the active short-circuit test nor the shutdown test is performed. For example, if the abnormal flag bit of the electric drive module is set and the DC bus voltage of the vehicle is greater than or equal to a set threshold (e.g., 500V), the active short-circuit test of the electric drive module is not performed; only the shutdown test (three-phase open circuit) of the electric drive module is performed. Alternatively, neither the active short-circuit test nor the shutdown test is performed. This avoids the possibility of a direct connection between the upper and lower bridge arms of the electric drive module during shutdown path detection when a short circuit exists in the electric drive module, which could cause thermal safety risks and fuse blowouts, thereby reducing vehicle damage.

[0056] Figure 5 This is a flowchart illustrating a protection method for path shutdown detection according to an exemplary embodiment. Figure 5 As shown, the test process for performing normal shutdown path detection may include the following steps: In step S20321, the active short-circuit test and / or shutdown test of the electric drive module are performed normally.

[0057] In this step, the active short-circuit test and / or shutdown test of the electric drive module are performed normally. For example, if the electric drive module's fault flag is not set, or the vehicle's DC bus voltage is less than a set threshold, the active short-circuit test and / or shutdown test of the electric drive module are performed normally. Because there is no short circuit in the electric drive module, or even if there is a short circuit but the vehicle's DC bus voltage is less than the set threshold, there will be no thermal safety risk to the vehicle or fuse blowing. Therefore, the shutdown path detection test procedure can be performed normally without concern for safety risks.

[0058] Figure 6 This is a flowchart illustrating a protection method for path shutdown detection according to an exemplary embodiment. Figure 6 As shown, the method may further include the following steps: In step S204, if the electric drive module restarts its switching action and the short circuit fault of the electric drive module is detected to have disappeared, the abnormal flag bit of the electric drive module is cleared to zero.

[0059] In this step, if the electric drive module restarts its switching action and the short-circuit fault in the electric drive module disappears, the abnormal flag bit of the electric drive module is cleared to zero. For example, clearing the abnormal flag bit when the electric drive module restarts its switching action and the short-circuit fault disappears ensures that logical judgments can be performed correctly during the next shutdown path detection, avoiding erroneous operations.

[0060] Figure 7 This is a flowchart illustrating a protection method for path shutdown detection according to an exemplary embodiment. Figure 7 As shown, the method may further include the following steps: In step S30, if the status information of the electric drive module is not short-circuited, the active short-circuit test and / or shutdown test of the electric drive module are performed normally.

[0061] In this step, if the electric drive module's status information indicates no short circuit, the active short circuit test and / or shutdown test of the electric drive module are performed normally. For example, if the electric drive module does not have a short circuit, then the active short circuit test and / or shutdown test of the electric drive module can be performed normally without worrying about the electric drive module's upper and lower bridge arms being directly connected during shutdown path detection, causing thermal safety risks and fuse blowouts.

[0062] In summary, this disclosure provides a protection method for shutdown path detection, comprising: acquiring the status information of the vehicle's electric drive module; and executing a shutdown path detection protection strategy when the status information of the electric drive module indicates a short circuit. This disclosure can avoid thermal safety risks and fuse blowouts caused by direct connection between the upper and lower bridge arms of the electric drive module during shutdown path detection in the event of a short circuit failure in the power module, thereby reducing vehicle damage.

[0063] Figure 8 This is a block diagram illustrating a protection device for shutting down path detection according to an exemplary embodiment. Figure 8 As shown, this embodiment of the disclosure provides a protection device 800 for disabling path detection, which may include the following modules: The acquisition module 810 is configured to acquire the status information of the vehicle's electric drive module.

[0064] The execution module 820 is configured to execute a protection strategy to shut down the path detection when the status information of the electric drive module is short-circuited.

[0065] In one possible implementation, the execution module 820 is further configured to: Obtain the fault flag of the electric drive module; Obtain the DC bus voltage of the vehicle; Based on the abnormal flag of the electric drive module and the DC bus voltage of the vehicle, a protection strategy for shutting down path detection is executed.

[0066] In one possible implementation, the execution module 820 is further configured to: When the abnormal flag bit of the electric drive module is set and the DC bus voltage of the vehicle is greater than or equal to a set threshold, the test procedure for abnormal shutdown path detection is executed. If the abnormal flag bit of the electric drive module is not set, or if the DC bus voltage of the vehicle is less than the set threshold, the test procedure for normal shutdown path detection is executed.

[0067] In one possible implementation, the execution module 820 is further configured to: The active short-circuit test of the electric drive module is not performed; only the shutdown test of the electric drive module is performed. Alternatively, neither the active short-circuit test nor the shutdown test is performed.

[0068] In one possible implementation, the execution module 820 is further configured to: Perform the active short-circuit test and / or shutdown test of the electric drive module normally.

[0069] In one possible implementation, the execution module 820 is further configured to: If the electric drive module restarts its switching action and the short-circuit fault of the electric drive module is detected to have disappeared, the abnormal flag bit of the electric drive module will be cleared to zero.

[0070] In one possible implementation, the execution module 820 is further configured to: If the status information of the electric drive module indicates that it is not short-circuited, the active short-circuit test and / or shutdown test of the electric drive module shall be performed normally.

[0071] In summary, this disclosure provides a protection device for shutdown path detection, comprising: an acquisition module configured to acquire status information of the vehicle's electric drive module; and an execution module configured to execute a shutdown path detection protection strategy when the status information of the electric drive module indicates a short circuit. This disclosure can avoid thermal safety risks and fuse blowouts caused by direct connection between the upper and lower bridge arms of the electric drive module during shutdown path detection in the event of a short circuit failure in the power module, thereby reducing vehicle damage.

[0072] Regarding the apparatus in the above embodiments, the specific manner in which each module performs its operation has been described in detail in the embodiments related to the method, and will not be elaborated upon here.

[0073] This disclosure also provides a computer-readable storage medium having stored thereon computer program instructions that, when executed by a processor, implement the steps of the protection method for shutdown path detection provided in this disclosure.

[0074] Figure 9 This is a block diagram illustrating an electronic device according to an exemplary embodiment. For example, the electronic device 900 may be an electric drive controller or a vehicle controller.

[0075] Reference Figure 9 The electronic device 900 may include one or more of the following components: processing component 902, memory 904, power supply component 906, multimedia component 908, audio component 910, input / output interface 912, sensor component 914, and communication component 916.

[0076] Processing component 902 typically controls the overall operation of electronic device 900, such as operations associated with display, telephone calls, data communication, camera operation, and recording operations. Processing component 902 may include one or more processors 920 to execute instructions to perform all or part of the steps of the methods described above. Furthermore, processing component 902 may include one or more modules to facilitate interaction between processing component 902 and other components. For example, processing component 902 may include a multimedia module to facilitate interaction between multimedia component 908 and processing component 902.

[0077] Memory 904 is configured to store various types of data to support the operation of electronic device 900. Examples of this data include instructions for any application or method operating on electronic device 900, contact data, phonebook data, messages, pictures, videos, etc. Memory 904 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk.

[0078] Power supply component 906 provides power to various components of electronic device 900. Power supply component 906 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power to electronic device 900.

[0079] Multimedia component 908 includes a screen that provides an output interface between the electronic device 900 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touchscreen to receive input signals from the user. The touch panel includes one or more touch sensors to sense touches, swipes, and gestures on the touch panel. The touch sensors may sense not only the boundaries of the touch or swipe action but also the duration and pressure associated with the touch or swipe operation. In some embodiments, multimedia component 908 includes a front-facing camera and / or a rear-facing camera. When the electronic device 900 is in an operating mode, such as a shooting mode or a video mode, the front-facing camera and / or the rear-facing camera may receive external multimedia data. Each front-facing camera and rear-facing camera may be a fixed optical lens system or have focal length and optical zoom capabilities.

[0080] Audio component 910 is configured to output and / or input audio signals. For example, audio component 910 includes a microphone (MIC) configured to receive external audio signals when electronic device 900 is in an operating mode, such as call mode, recording mode, and voice recognition mode. The received audio signals may be further stored in memory 904 or transmitted via communication component 916. In some embodiments, audio component 910 also includes a speaker for outputting audio signals.

[0081] Input / output interface 912 provides an interface between processing component 902 and peripheral interface modules, such as keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to, home buttons, volume buttons, start buttons, and lock buttons.

[0082] Sensor assembly 914 includes one or more sensors for providing state assessments of various aspects of electronic device 900. For example, sensor assembly 914 can detect the on / off state of electronic device 900, the relative positioning of components such as the display and keypad of electronic device 900, changes in position of electronic device 900 or a component of electronic device 900, the presence or absence of user contact with electronic device 900, orientation or acceleration / deceleration of electronic device 900, and temperature changes of electronic device 900. Sensor assembly 914 may include a proximity sensor configured to detect the presence of nearby objects without any physical contact. Sensor assembly 914 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, sensor assembly 914 may also include an accelerometer, gyroscope, magnetometer, pressure sensor, or temperature sensor.

[0083] Communication component 916 is configured to facilitate wired or wireless communication between electronic device 900 and other devices. Electronic device 900 can access wireless networks based on communication standards, such as WiFi, 2G, or 3G, or combinations thereof. In one exemplary embodiment, communication component 916 receives broadcast signals or broadcast-related information from an external broadcast management system via a broadcast channel. In one exemplary embodiment, communication component 916 also includes a near-field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, Infrared Data Association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

[0084] In an exemplary embodiment, the electronic device 900 may be implemented by one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components to perform the methods described above.

[0085] In an exemplary embodiment, a non-transitory computer-readable storage medium including instructions is also provided, such as a memory 904 including instructions, which can be executed by a processor 920 of an electronic device 900 to perform the above-described method. For example, the non-transitory computer-readable storage medium may be a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, and optical data storage device, etc.

[0086] The aforementioned device can be a standalone electronic device or a part of a standalone electronic device. For example, in one embodiment, the device can be an integrated circuit (IC) or a chip, wherein the integrated circuit can be a single IC or a collection of multiple ICs. The chip can include, but is not limited to, the following types: GPU (Graphics Processing Unit), CPU (Central Processing Unit), FPGA (Field Programmable Gate Array), DSP (Digital Signal Processor), ASIC (Application Specific Integrated Circuit), and SoC (System on Chip). The aforementioned integrated circuit or chip can be used to execute executable instructions (or code) to implement the aforementioned protection method for shutdown path detection. The executable instructions can be stored in the integrated circuit or chip or obtained from other devices or equipment. For example, the integrated circuit or chip includes a processor, memory, and an interface for communicating with other devices. The executable instruction can be stored in the memory, and when the executable instruction is executed by the processor, it implements the above-mentioned protection method for shutting down the path detection; or, the integrated circuit or chip can receive the executable instruction through the interface and transmit it to the processor for execution to implement the above-mentioned protection method for shutting down the path detection.

[0087] In another exemplary embodiment, a computer program product is also provided, the computer program product comprising a computer program executable by a programmable device, the computer program having a code portion for performing the protection method for cutting off path detection as described above when executed by the programmable device.

[0088] Figure 10 This is a block diagram illustrating a vehicle according to an exemplary embodiment. (Refer to...) Figure 10 The vehicle 1000 may include electronic devices 900 and various subsystems, such as an infotainment system 1010, a perception system 1020, a decision control system 1030, a drive system 1040, and a computing platform 1050. The vehicle 1000 may also include more or fewer subsystems, and each subsystem may include multiple components. Furthermore, each subsystem and component of the vehicle 1000 can be interconnected via wired or wireless means.

[0089] In some embodiments, the infotainment system 1010 may include a communication system, an entertainment system, and a navigation system, etc.

[0090] The perception system 1020 may include several types of sensors for sensing information about the environment surrounding the vehicle 1000. For example, the perception system 1020 may include a global positioning system (which may be a GPS system, a BeiDou system, or another positioning system), an inertial measurement unit (IMU), a lidar, a millimeter-wave radar, an ultrasonic radar, and a camera device.

[0091] The decision control system 1030 may include a computing system, a vehicle controller, a steering system, a throttle, and a braking system.

[0092] The drive system 1040 may include components that provide powered motion to the vehicle 1000. In one embodiment, the drive system 1040 may include an engine, an energy source, a transmission system, and wheels. The engine may be one or a combination of internal combustion engines, electric motors, and compressed air engines. The engine is capable of converting energy provided by the energy source into mechanical energy.

[0093] Some or all of the functions of the vehicle 1000 are controlled by a computing platform 1050. The computing platform 1050 may include at least one processor 1051 and a memory 1052, the processor 1051 being able to execute instructions 1053 stored in the memory 1052.

[0094] The processor 1051 can be any conventional processor, such as a commercially available CPU. The processor may also include graphics processing units (GPUs), field-programmable gate arrays (FPGAs), systems on chips (SoCs), application-specific integrated circuits (ASICs), or combinations thereof.

[0095] The memory 1052 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk.

[0096] In addition to instruction 1053, memory 1052 can also store data, such as road maps, route information, vehicle position, direction, speed, and other data. The data stored in memory 1052 can be used by computing platform 1050.

[0097] In this embodiment of the disclosure, the processor 1051 may execute instruction 1053 to complete all or part of the steps of the above-described protection method for shutting down path detection.

[0098] In another exemplary embodiment, a computer program product is also provided, the computer program product comprising a computer program executable by a programmable device, the computer program having a code portion for performing the protection method for cutting off path detection as described above when executed by the programmable device.

[0099] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of this disclosure. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0100] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. A protection method for detecting shutdown paths, characterized in that, include: Obtain the status information of the vehicle's electric drive module; If the status information of the electric drive module is short-circuited, a protection strategy of shutting down path detection is executed; The protection strategy of executing shutdown path detection when the status information of the electric drive module is short-circuited includes: Obtain the fault flag of the electric drive module; Obtain the DC bus voltage of the vehicle; When the abnormal flag bit of the electric drive module is set and the DC bus voltage of the vehicle is greater than or equal to a set threshold, the test procedure for abnormal shutdown path detection is executed. If the abnormal flag bit of the electric drive module is not set, or if the DC bus voltage of the vehicle is less than the set threshold, the test procedure for normal shutdown path detection is executed.

2. The method according to claim 1, characterized in that, The test process for detecting abnormal shutdown paths includes: The active short-circuit test of the electric drive module is not performed; only the shutdown test of the electric drive module is performed. Alternatively, neither the active short-circuit test nor the shutdown test is performed.

3. The method according to claim 1, characterized in that, The test process for performing normal shutdown path detection includes: Perform the active short-circuit test and / or shutdown test of the electric drive module normally.

4. The method according to claim 1, characterized in that, The method further includes: If the electric drive module restarts its switching action and the short-circuit fault of the electric drive module is detected to have disappeared, the abnormal flag bit of the electric drive module will be cleared to zero.

5. The method according to claim 1, characterized in that, The method further includes: If the status information of the electric drive module indicates that it is not short-circuited, the active short-circuit test and / or shutdown test of the electric drive module shall be performed normally.

6. A protection device for detecting a shutdown path, characterized in that, include: The acquisition module is configured to acquire the status information of the vehicle's electric drive module; The execution module is configured to execute a protection strategy to shut down path detection when the status information of the electric drive module is short-circuited. The execution module is further configured to acquire an abnormal flag bit of the electric drive module; acquire the DC bus voltage of the vehicle; execute an abnormal shutdown path detection test procedure when the abnormal flag bit of the electric drive module is set and the DC bus voltage of the vehicle is greater than or equal to a set threshold; and execute a normal shutdown path detection test procedure when the abnormal flag bit of the electric drive module is not set or the DC bus voltage of the vehicle is less than the set threshold.

7. An electronic device, characterized in that, include: processor; Memory used to store processor-executable instructions; The processor is configured to execute the executable instructions to implement the method of any one of claims 1 to 5.

8. A vehicle, characterized in that, Includes the electronic device as described in claim 7.

9. A computer-readable storage medium having computer program instructions stored thereon, characterized in that, When the program instructions are executed by the processor, they implement the steps of the method according to any one of claims 1 to 5.

10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 5.

11. A chip, characterized in that, It includes a processor and an interface; the processor is used to read instructions to execute the method of any one of claims 1 to 5.

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