A high-voltage interlocking system, a fault detection method, an electronic device and a storage medium

Abstract

This application discloses a high-voltage interlock system, a fault detection method, an electronic device, and a storage medium. The high-voltage interlock system includes a high-voltage circuit module, an electrical signal acquisition module, and a control module. The high-voltage circuit module includes a high-voltage power supply and a high-voltage load module connected to the high-voltage power supply. The high-voltage load module includes at least one high-voltage load. The electrical signal acquisition module is connected to the high-voltage load module, and the control module is communicatively connected to the electrical signal acquisition module. The electrical signal acquisition module is used to acquire electrical signals corresponding to the input and / or output terminals of the high-voltage load. The control module is used to acquire the electrical signals and perform fault detection on the high-voltage circuit module based on the electrical signals to obtain the detection results of the high-voltage circuit module. Thus, by designing a high-voltage interlock system that does not require wiring harnesses, the complexity of the layout caused by wiring harnesses in traditional high-voltage interlock schemes is solved, and the accuracy and efficiency of fault detection can be improved by acquiring the electrical signals of the high-voltage load.

Description

Technical Field

[0001] This application relates to the field of high-voltage interlocking technology, and in particular to a high-voltage interlocking system, a fault detection method, an electronic device, and a storage medium. Background Technology

[0002] High Voltage Interlock (HVIL) systems monitor all electrical connections in the HVIL system in real time via a low-voltage signal circuit (i.e., the high-voltage interlock circuit) to ensure there are no open circuits or short circuits. If a high-voltage connector is detected to be loose or detached through the high-voltage interlock circuit, the HVIL system will immediately cut off the high-voltage power supply, thus preventing electric shock to passengers and maintenance personnel. Currently, the high-voltage interlock circuit is mainly established through wiring harnesses, interlock switches, and wire connectors. This involves adding an extra circuit to the wiring harness and connectors to monitor the circuit integrity of the high-voltage interlock system. A smaller number of systems use a method where the high-voltage interlock structure is independent of the inner plastic shell or connected by a separate small connector.

[0003] In traditional high-voltage interlocking schemes, wiring harnesses need to be integrated with the high-voltage interlocking circuit, but this leads to several problems. These include increased wiring harness cost and manufacturing complexity; potential failure of the high-voltage interlocking circuit due to poor contact at the wiring harness terminals; low fault detection accuracy caused by the long wiring harness lines; and low fault detection efficiency due to the need for additional sensors to locate specific faulty components.

[0004] In summary, traditional high-voltage interlocking schemes are not only complex to arrange, but also subject to many factors affecting the accuracy of fault detection. Summary of the Invention

[0005] This application provides a high-voltage interlock system, a fault detection method, an electronic device, and a storage medium. By designing a novel high-voltage interlock system that does not require wiring harnesses, it solves the problem of complex layout caused by wiring harnesses in traditional high-voltage interlock schemes. Furthermore, it improves fault detection accuracy by collecting electrical signals corresponding to the input and / or output terminals of the high-voltage load, thereby solving the aforementioned technical problems.

[0006] In a first aspect, this application provides a high-voltage interlocking system, which includes a high-voltage circuit module, an electrical signal acquisition module, and a control module. The high-voltage circuit module includes a high-voltage power supply and a high-voltage load module connected to the high-voltage power supply. The high-voltage load module includes at least one high-voltage load. The electrical signal acquisition module is connected to the high-voltage load module, and the control module is communicatively connected to the electrical signal acquisition module. The electrical signal acquisition module is used to acquire the electrical signals corresponding to the input and / or output terminals of the high-voltage load; The control module is used to acquire the electrical signal and perform fault detection on the high-voltage circuit module based on the electrical signal to obtain the detection result of the high-voltage circuit module.

[0007] Secondly, this application also provides a fault detection method applied to the aforementioned high-voltage interlocking system, the method comprising: The electrical signal acquisition module of the high-voltage interlock system acquires the electrical signals corresponding to the input and / or output terminals of the high-voltage load. The electrical signal is acquired through the control module of the high-voltage interlock system, and the high-voltage circuit module is fault detected based on the electrical signal to obtain the detection result of the high-voltage circuit module.

[0008] Furthermore, this application also provides an electronic device, including a processor and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor performs the fault detection method provided in this application.

[0009] Furthermore, this application embodiment also provides a storage medium storing a computer program. When the computer program is run on an electronic device, the computer program is used to cause the electronic device to execute any of the fault detection methods provided in this application embodiment.

[0010] Furthermore, this application also provides a computer program product, including a computer program or instructions, which, when executed by a processor, implement any of the fault detection methods provided in this application.

[0011] In this embodiment, a novel high-voltage interlocking system without wiring harnesses is designed. This system includes a high-voltage circuit module, an electrical signal acquisition module, and a control module. The high-voltage circuit module includes a high-voltage power supply and a high-voltage load module connected to the power supply. The high-voltage load module includes at least one high-voltage load. The electrical signal acquisition module is connected to the high-voltage load module. The control module is communicatively connected to the electrical signal acquisition module. The electrical signal acquisition module acquires electrical signals corresponding to the input and / or output terminals of the high-voltage load. The control module acquires the electrical signals and performs fault detection on the high-voltage circuit module based on these signals, obtaining the detection results. Thus, this high-voltage interlocking system solves the problem of complex layout caused by wiring harnesses in traditional high-voltage interlocking schemes and improves fault detection accuracy and efficiency by acquiring electrical signals corresponding to the input and / or output terminals of the high-voltage load. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0014] Figure 1 A schematic diagram of the architecture of a high-voltage interlocking system provided in an embodiment of this application; Figure 2 This is a schematic diagram showing the connection between the high-voltage load module and the electrical signal acquisition module in the high-voltage interlock system provided in this application embodiment; Figure 3 This is a schematic diagram of the electrical signal acquisition module provided in an embodiment of this application; Figure 4 This is another schematic diagram of the high-voltage interlock system provided in the embodiments of this application; Figure 5 This is a schematic diagram of the high-voltage interlock system provided in the embodiments of this application; Figure 6 This is a flowchart illustrating the fault detection method based on a high-voltage interlocking system provided in the embodiments of this application; Figure 7 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application.

[0015] Figure label: 01. High-voltage interlocking system; 10. High-voltage circuit module; 101. High-voltage power supply; 102. High-voltage load module; 103. High-voltage connector; 20. Electrical signal acquisition module; 201. Voltage acquisition module; 202. Current acquisition module; 30. Control module; 40. Safe execution module; 50. Wireless transmission module; 60. Signal Calculation Module. Detailed Implementation

[0016] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0017] In the embodiments of this application, "at least one" refers to one or more; "multiple" refers to two or more. In the description of this application, the terms "first," "second," "third," etc., are used only for the purpose of distinguishing descriptions and should not be construed as indicating or implying relative importance, nor should they be construed as indicating or implying order.

[0018] References such as “one embodiment” or “some embodiments” as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the terms “comprising,” “including,” “having,” and variations thereof, as used in this specification, mean “including, but not limited to,” unless otherwise specifically emphasized.

[0019] It should be noted that in the embodiments of this application, "and / or" describes the relationship between associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. In addition, the character " / ", unless otherwise specified, generally indicates that the associated objects before and after it are in an "or" relationship.

[0020] It should be noted that in the embodiments of this application, "connection" can be understood as electrical connection. The connection between two electrical components can be a direct or indirect connection between the two electrical components. For example, the connection between A and B can be a direct connection between A and B, or an indirect connection between A and B through one or more other electrical components.

[0021] Research has revealed that in traditional high-voltage interlocking schemes, the wiring harness must be designed and arranged along with the high-voltage interlocking circuit, which leads to several problems. These include increased wiring harness cost and manufacturing complexity; potential failure of the high-voltage interlocking circuit due to poor contact at the wiring harness terminals; low fault detection accuracy due to the long wiring harness lines; and low fault detection efficiency due to the need for additional sensors to locate specific faulty components. Traditional high-voltage interlocking schemes are constrained by the core contradiction of existing wiring harness series detection methods: an imbalance between "mechanical contact reliability" and "electronic diagnostic accuracy." This results in a series of problems such as unreliable contacts (mainly due to pin retraction and corrosion), impedance disturbances, diagnostic misjudgments, and low maintenance efficiency. Consequently, traditional high-voltage interlocking schemes not only reduce the user experience but also increase the cost and complexity of after-sales maintenance.

[0022] In summary, traditional high-voltage interlocking schemes are not only complex to arrange but also subject to numerous factors affecting detection accuracy. Therefore, there is an urgent need for a technical solution that eliminates the need for low-voltage interlocking harnesses and enables interlocking monitoring solely based on the characteristics of the high-voltage circuit, in order to address these issues.

[0023] To address the aforementioned issues, this application provides a high-voltage interlocking system that eliminates wiring harnesses and utilizes only the electrical signals from the high-voltage load to detect faults in the high-voltage circuit module. This not only solves the problem of complex layout caused by wiring harnesses in traditional high-voltage interlocking schemes but also improves fault detection accuracy and efficiency by acquiring the electrical signals corresponding to the input and / or output terminals of the high-voltage load.

[0024] Please see Figure 1 This application provides a high-voltage interlock system 01, which includes a high-voltage circuit module 10, an electrical signal acquisition module 20, and a control module 30. The high-voltage circuit module 10 includes a high-voltage power supply 101 and a high-voltage load module 102 connected to the high-voltage power supply 101. The high-voltage load module 102 includes at least one high-voltage load. The electrical signal acquisition module 20 is connected to the high-voltage load module 102, and the control module 30 is communicatively connected to the electrical signal acquisition module 20.

[0025] The electrical signal acquisition module 20 is used to acquire the electrical signals corresponding to the input and / or output terminals of the high-voltage load; The control module 30 is used to acquire electrical signals and perform fault detection on the high-voltage circuit module 10 based on the electrical signals, and obtain the detection results of the high-voltage circuit module 10.

[0026] Specifically, the high-voltage circuit module 10 includes a high-voltage power supply 101, a high-voltage load module 102, and a high-voltage connector 103 connecting the high-voltage power supply 101 and the high-voltage load module 102 in the high-voltage interlock system 01. The high-voltage power supply 101 refers to the power battery or power battery pack of the high-voltage interlock system 01. The high-voltage load module 102 includes at least one high-voltage load, and multiple high-voltage loads can be connected in parallel and / or series to form the high-voltage load module 102. A high-voltage load refers to a high-voltage component of the high-voltage interlock system 01, and its load type can be various, depending on the actual situation of the high-voltage interlock system 01; no limitation is made here. For example, the high-voltage load may include, but is not limited to, a motor control unit (MCU), an on-board charger (OBC), a compressor control module (CCM), fast charging (FC), and a converter (such as a DC / DC converter). It should be noted that the high-voltage circuit module 10 may include multiple high-voltage loads. Each high-voltage load is connected to the high-voltage power supply 101 via a high-voltage connector 103, forming a high-voltage circuit unit. Therefore, the high-voltage circuit module 10 may include multiple high-voltage circuit units. Different high-voltage loads may connect to the high-voltage power supply 101 via different high-voltage connectors 103. For example, one high-voltage load may connect to the high-voltage power supply 101 via a corresponding high-voltage connector 103 among multiple high-voltage connectors 103. Alternatively, different high-voltage loads may connect to the high-voltage power supply 101 via the same high-voltage connector 103. For example, multiple high-voltage loads may connect to the high-voltage power supply 101 via the same high-voltage connector 103.

[0027] The electrical signal acquisition module 20 refers to the module in the high-voltage interlock system 01 used for acquiring electrical signals. The electrical signal acquisition module 20 is configured with a sampling frequency, which indicates the frequency at which the electrical signal acquisition module 20 acquires electrical signals. The sampling frequency of the electrical signal acquisition module 20 can be set in various ways and can be adjusted according to actual conditions; no restrictions are placed here. For example, the sampling frequency of the electrical signal acquisition module 20 can be set according to empirical values, experimental values, or manually. Alternatively, the sampling frequency of the electrical signal acquisition module 20 can be determined based on the time required for the high-voltage interlock system 01 to energize. That is, when a fault occurs in the high-voltage interlock, this sampling frequency is used to ensure the timeliness of the sampling, allowing sufficient time for the high-voltage interlock system 01 to energize.

[0028] Optionally, the electrical signal acquisition module 20 may include a voltage acquisition module 201 and / or a current acquisition module 202. The voltage acquisition module 201 refers to the module in the high-voltage interlock system 01 used for acquiring voltage signals. The current acquisition module 202 refers to the module in the high-voltage interlock system 01 used for acquiring current signals.

[0029] There are various ways to connect the electrical signal acquisition module 20 to the high-voltage load module 102, which can be adjusted according to the actual situation, and no restrictions are imposed here. When the electrical signal acquisition module 20 includes a voltage acquisition module 201, the aforementioned electrical signal is a voltage signal. To acquire the voltage signal of a single high-voltage load, voltage acquisition modules 201 can be respectively installed at both ends of at least a portion of the high-voltage load in the high-voltage load module 102. To acquire the voltage signal of the entire high-voltage load module 102, voltage acquisition modules 201 can be installed at both ends of the high-voltage load module 102. When the electrical signal acquisition module 20 includes a current acquisition module 202, the aforementioned electrical signal is a current signal. To acquire the current signal of the entire high-voltage load module 102, current acquisition modules 202 can be installed at both ends of the high-voltage load module 102.

[0030] For example, please refer to Figure 2 The high-voltage load module 102 may include a high-voltage load A and a high-voltage load B. To acquire the voltage signal of high-voltage load A, a voltage acquisition module A1 can be installed at the input terminal of high-voltage load A, and a voltage acquisition module A2 can be installed at the output terminal of high-voltage load A. To acquire the voltage signal of high-voltage load B, a voltage acquisition module B1 can be installed at the input terminal of high-voltage load B, and a voltage acquisition module B2 can be installed at the output terminal of high-voltage load module 102. To acquire the current signal of high-voltage load module 102, a current acquisition module A can be installed at the input terminal of high-voltage load module 102, and a current acquisition module B can be installed at the output terminal of high-voltage load module 102.

[0031] Understandable, Figure 2 For illustrative purposes only, the high-voltage load module 102 may also include a high-voltage load C without a voltage acquisition module 201, a high-voltage load D with a voltage acquisition module 201, or a current acquisition module 202 installed at both ends of the high-voltage load A. The specific details can be adjusted according to the actual situation, and will not be elaborated here.

[0032] Please see Figure 3The electrical signal acquisition module 20 can be composed of five parts: a voltage divider circuit, a transient voltage suppression diode (TVS diode), a filter capacitor, a voltage follower, and an optocoupler. The TVS diode is designed to resist transient overvoltage phenomena such as electrostatic discharge and power surges, thereby protecting electrical components from damage, and its response speed can reach the picosecond level. Preferably, this embodiment can use an automotive-grade through-hole TVS diode, whose operating voltage must be greater than 1.2 times the maximum operating voltage of the circuit, and whose breakdown voltage is higher than the circuit's operating voltage. The filter capacitor is designed to eliminate interference signals in the circuit, thereby improving the electromagnetic interference immunity of the high-voltage interlock system 01. Optical isolation is designed to achieve signal isolation, thereby improving the interference immunity of the high-voltage interlock system 01.

[0033] It is understood that both the current acquisition module 202 and the voltage acquisition module 201 consist of five parts: a voltage divider circuit, a TVS diode, a filter capacitor, a voltage follower, and an optocoupler. However, their specific connection methods can be adjusted according to actual conditions and are not limited here. It should be noted, however, that the voltage acquisition module 201 located at the input terminal of the same high-voltage load has the same structure as the voltage acquisition module 201 located at the output terminal. Similarly, the current acquisition module 202 located at the input terminal of the high-voltage load module 102 has the same structure as the current acquisition module 202 located at the output terminal of the high-voltage load module 102.

[0034] Control module 30 refers to the logic module of high-voltage interlock system 01. Its configuration can be tailored to specific application scenarios and is not limited here. For example, if the high-voltage interlock system 01 is used in a battery-related scenario, control module 30 can be a battery management system. If the high-voltage interlock system 01 is used in a vehicle-related scenario, control module 30 can be a vehicle controller.

[0035] There are several ways to perform fault detection on the high-voltage circuit module 10 based on electrical signals by the control module 30. The specific method can be adjusted according to the actual situation, and no restrictions are imposed here.

[0036] Optionally, when the above-mentioned electrical signal acquisition module 20 includes a voltage acquisition module 201, the above-mentioned control module 30 is further used to perform fault detection on the high-voltage circuit module 10 based on the analysis results of the difference between the voltage signals corresponding to the input and output terminals of the same high-voltage load, and obtain the detection results of the high-voltage circuit module 10.

[0037] The difference analysis result indicates the outcome obtained after performing a difference analysis on the input and output voltage signals of the same high-voltage load. The difference analysis result can be determined based on the difference analysis method, which can be varied and adjusted according to actual conditions; no specific method is limited here. Optionally, the difference analysis method can be to analyze the absolute difference of the voltage signals, in which case the result can include the voltage difference between the corresponding voltage signals at the input and output terminals of the same high-voltage load. For example, consider a high-voltage load with an input voltage signal U... in The output voltage signal of this high-voltage load is U out Then the difference analysis result △U=U out -U in Optionally, the difference analysis can be performed by analyzing the relative differences in voltage signals. The results of this difference analysis could include the voltage ratio between the corresponding voltage signals at the input and output terminals of the same high-voltage load. For example, consider a high-voltage load with input voltage signal U... in The output voltage signal of this high-voltage load is U out Then the difference analysis result is k=U out / U in .

[0038] There are various methods for fault detection of the high-voltage circuit module 10 based on the difference analysis results, and the specific method can be adjusted according to the specific difference analysis results. For example, if the difference analysis results include voltage differences, the control module 30 is further used to compare the voltage differences of each high-voltage load with a first preset threshold to obtain a first comparison result for each high-voltage load. If there is an abnormal comparison result in the first comparison result, the detection result is determined to be a fault in the high-voltage circuit module 10, and the faulty component in the high-voltage circuit module 10 is identified. As another example, if the difference analysis results include voltage ratios, the control module 30 is further used to compare the voltage ratios of each high-voltage load with a second preset threshold to obtain a second comparison result for each high-voltage load. If there is an abnormal comparison result in the second comparison result, the detection result is determined to be a fault in the high-voltage circuit module 10, and the faulty component in the high-voltage circuit module 10 is identified. For example, when the difference analysis results include voltage difference and voltage ratio, the voltage difference of each high-voltage load is compared with a first preset threshold to obtain a first comparison result of each high-voltage load; the voltage ratio of each high-voltage load is compared with a second preset threshold to obtain a second comparison result of each high-voltage load; if there is an abnormal comparison result in the first comparison result and / or the second comparison result, it is determined that the detection result is that the high-voltage circuit module 10 is faulty, and the faulty component in the high-voltage circuit module 10 is identified.

[0039] The first preset threshold is used to indicate a preset voltage difference value for measuring whether the high-voltage circuit unit containing the high-voltage load is faulty. The first comparison result includes a normal comparison result indicating that the high-voltage circuit unit containing the high-voltage load is normal, and an abnormal comparison result indicating that the high-voltage circuit unit containing the high-voltage load is faulty. There are various ways to determine the first comparison result, which can be adjusted according to actual conditions and is not limited here. For example, if the voltage difference is not greater than the first preset threshold, the corresponding first comparison result is determined to be a normal comparison result; otherwise, the corresponding first comparison result is determined to be an abnormal comparison result. Another example is that if the difference between the voltage difference and the first preset threshold is within an allowable range, the corresponding first comparison result is determined to be a normal comparison result; otherwise, the corresponding first comparison result is determined to be an abnormal comparison result. The second preset threshold is used to indicate a preset voltage ratio value for measuring whether the high-voltage circuit unit containing the high-voltage load is faulty. The second comparison result includes a normal comparison result indicating that the high-voltage circuit unit containing the high-voltage load is normal, and an abnormal comparison result indicating that the high-voltage circuit unit containing the high-voltage load is faulty. There are various ways to determine the second comparison result, which can be adjusted according to actual conditions and is not limited here. For example, if the voltage ratio is not greater than a second preset threshold, the corresponding second comparison result is determined to be a normal comparison result; otherwise, the corresponding second comparison result is determined to be an abnormal comparison result. As another example, if the difference between the voltage ratio and the second preset threshold is within an allowable range, the corresponding second comparison result is determined to be a normal comparison result; otherwise, the corresponding second comparison result is determined to be an abnormal comparison result. The faulty component in the aforementioned high-voltage circuit module 10 may include the high-voltage load corresponding to the abnormal comparison result, or the high-voltage connector 103. It should be noted that if there are abnormal comparison results in the first comparison result and / or the second comparison result, and the number of abnormal comparison results reaches a preset number (such as 90%, or other proportions), the faulty component in the high-voltage circuit module 10 is determined to be the high-voltage connector 103.

[0040] Optionally, when the above-mentioned electrical signal acquisition module 20 includes a current acquisition module 202, the above-mentioned control module 30 is further used to perform fault detection on the high-voltage circuit module 10 based on the third comparison result between the current signals corresponding to the input and output terminals of the high-voltage load module 102, and obtain the detection result of the high-voltage circuit module 10.

[0041] The third comparison result includes a normal comparison result indicating that the high-voltage load module 102 is functioning normally, and an abnormal comparison result indicating that the high-voltage load module 102 is faulty. There are various ways to determine the third comparison result, and these can be adjusted according to actual circumstances; no restrictions are imposed here. For example, if the current difference between the corresponding current signals at the input and output terminals of the high-voltage load module 102 is not less than a third preset threshold, the third comparison result is determined to be a normal comparison result; otherwise, the third comparison result is determined to be an abnormal comparison result. The third preset threshold is used to indicate a preset current difference value for measuring whether the high-voltage load module 102 is faulty. As another example, if the difference between the current difference between the corresponding current signals at the input and output terminals of the high-voltage load module 102 and the third preset threshold is within an allowable range, the third comparison result is determined to be a normal comparison result; otherwise, the third comparison result is determined to be an abnormal comparison result.

[0042] Optionally, when the above-mentioned electrical signal acquisition module 20 includes a current acquisition module 202, the resistance of the high-voltage load module 102 is determined based on the distribution information of each high-voltage load in the high-voltage load module 102; the predicted voltage signal of the corresponding output terminal of the high-voltage load module 102 is determined based on the current signal and resistance of the output terminal of the high-voltage load module 102; and the high-voltage circuit module 10 is fault-detected based on the fourth comparison result between the target voltage signal and the predicted voltage signal of the corresponding output terminal of the high-voltage load module 102, thereby obtaining the detection result of the high-voltage circuit module 10.

[0043] The distribution information of each high-voltage load in the high-voltage load module 102 is used to indicate the series and parallel connection status of each high-voltage load in the high-voltage load module 102. When the distribution information of each high-voltage load in the high-voltage load module 102 indicates parallel connection, the resistance of the high-voltage load module 102 is determined according to the resistance calculation method corresponding to parallel connection and the resistance of each high-voltage load. When the distribution information of each high-voltage load in the high-voltage load module 102 indicates series connection, the resistance of the high-voltage load module 102 is determined according to the resistance calculation method corresponding to series connection and the resistance of each high-voltage load. When the distribution information of each high-voltage load in the high-voltage load module 102 includes both series and parallel connections, the resistance of the high-voltage load module 102 is determined according to the matching resistance calculation method and the resistance of each high-voltage load. In this embodiment, preferably, the distribution information of each high-voltage load in the high-voltage load module 102 indicates parallel connection. In a few cases, the distribution information in the high-voltage load module 102 indicates the presence of high-voltage loads in series.

[0044] The predicted voltage signal indicates the predicted output voltage signal for the high-voltage load module 102 based on the current signal and resistance corresponding to the output terminal of the high-voltage load module 102. The target voltage signal indicates the output voltage signal acquired or calculated for the high-voltage load module 102. There are various ways to determine the target voltage signal, which can be adjusted according to actual conditions and is not limited here. Optionally, it can be obtained through a voltage acquisition module 201 (e.g., [missing information]) corresponding to the output terminal of the high-voltage load module 102. Figure 2 The voltage acquisition modules C1 and C2 shown are used to acquire the target voltage signal. Optionally, the target voltage signal can also be calculated based on the voltage signal at the corresponding output terminal of each high-voltage load. For example, the average voltage, median voltage, and other parameters determined based on the voltage signal at the corresponding output terminal of each high-voltage load can be used as the target voltage signal. The specific parameters can be adjusted according to the actual situation, and there is no limitation here.

[0045] The fourth comparison result includes a normal comparison result indicating that the high-voltage load module 102 is functioning normally, and an abnormal comparison result indicating that the high-voltage load module 102 is faulty. There are various ways to determine the fourth comparison result, and these can be adjusted according to actual circumstances; no restrictions are imposed here. For example, if the voltage difference and / or voltage ratio between the target voltage signal and the predicted voltage signal is not less than a fourth preset threshold, the fourth comparison result is determined to be a normal comparison result; otherwise, the fourth comparison result is determined to be an abnormal comparison result. The fourth preset threshold is used to indicate a preset voltage difference and / or preset voltage ratio for measuring whether the high-voltage load module 102 is faulty. As another example, if the difference between the voltage difference and / or voltage ratio between the target voltage signal and the predicted voltage signal and the fourth preset threshold is within an allowable range, the fourth comparison result is determined to be a normal comparison result; otherwise, the fourth comparison result is determined to be an abnormal comparison result.

[0046] In some embodiments, the high-voltage interlock system 01 further includes a safety execution module 40, which is connected to the control module 30. The control module 30 is further configured to generate a control command and send it to the safety execution module 40 when the detection result of the high-voltage circuit module 10 indicates a fault. The safety execution module 40 is configured to receive the control command and perform corresponding operations according to the control command.

[0047] There can be multiple operations corresponding to control commands, and their specifics can be adjusted according to the actual situation; no restrictions are imposed here. For example, control commands may include a first control command to execute high-voltage power disconnection and a second control command to execute high-voltage discharge.

[0048] This application embodiment designs a novel high-voltage interlocking system that eliminates the need for wiring harnesses. The system includes a high-voltage circuit module, an electrical signal acquisition module, and a control module. The high-voltage circuit module includes a high-voltage power supply and a high-voltage load module connected to the power supply. The high-voltage load module includes at least one high-voltage load. The electrical signal acquisition module is connected to the high-voltage load module. The control module is communicatively connected to the electrical signal acquisition module. The electrical signal acquisition module acquires electrical signals corresponding to the input and / or output terminals of the high-voltage load. The control module acquires the electrical signals and performs fault detection on the high-voltage circuit module based on these signals, obtaining the detection results. Thus, this high-voltage interlocking system solves the problem of complex layout caused by wiring harnesses in traditional high-voltage interlocking schemes and improves fault detection accuracy and efficiency by acquiring electrical signals corresponding to the input and / or output terminals of the high-voltage load.

[0049] To facilitate understanding of the above scheme, a specific embodiment of the high-voltage interlocking system 01 will be used below for explanation. Please refer to... Figure 4 The high-voltage interlock system 01 includes a high-voltage power supply 101, a high-voltage load module 102, a high-voltage connector 103 connecting the high-voltage power supply 101 and the high-voltage load module 102, and an electrical signal acquisition module 20 (including a voltage acquisition module 201 and a current acquisition module 202). Figure 4 (For simplicity, this is represented by a diagram) control module 30, safety execution module 40, wireless transmission module 50, and signal calculation module 60. The high-voltage power supply 101 is connected to the first side (input terminal) of each high-voltage load via a high-voltage connector 103, and also to the input signal acquisition module 20. The second side (output terminal) of the high-voltage load is connected to the output signal acquisition module 20. Voltage and current signals are uniformly acquired by an analog-to-digital converter (ADC). For example, the input voltage and current signals are uniformly acquired by ADC1, and the output voltage and current signals are uniformly acquired by ADC2. The signal data acquired by ADC1 and ADC2 are transmitted to the signal calculation module 60 via the wireless transmission module 50 and a wireless signal receiver. Based on the internal calculation logic set in the signal calculation module 60, a high-voltage interlock determination is performed.

[0050] Specifically, please refer to Figure 5The control flow based on the high-voltage interlock system 01 includes: system power-on; after system power-on, voltage signals are acquired by voltage acquisition modules 201 located at both ends of each high-voltage load according to the corresponding preset sampling frequency; current signals are acquired by current acquisition modules 202 located at both ends of the high-voltage load module 102 according to the corresponding preset sampling frequency. The acquired voltage and current signals are transmitted to the control module 30 via the wireless transmission module 50 for filtering to eliminate electromagnetic interference. The voltage and current signals are calculated, such as calculating the voltage difference, voltage ratio, and the predicted voltage signal at the output of the high-voltage loop module 10. The voltage difference and voltage ratio are compared with the corresponding reference thresholds. If they are within the allowable range, the high-voltage loop module 10 is fault-free; if they exceed the allowable range, the high-voltage loop module 10 is faulty. Based on the specific voltage characteristics exceeding the allowable range, the faulty high-voltage component is accurately located. The target voltage signal and the predicted voltage signal at the output of the high-voltage circuit module 10 are compared. If they are similar, the high-voltage circuit module 10 is fault-free; if they are not similar, the high-voltage circuit module 10 is faulty. After determining that a fault exists, the control contactor is disconnected, the high-voltage power supply 101 is cut off, and active discharge is initiated, while the fault code is recorded. In this way, interlocking monitoring is achieved by acquiring voltage at the input and output terminals of the high-voltage load, and current at the input and output terminals of the high-voltage load module 102, thereby reducing hardware costs and potential failure points.

[0051] It is understandable that when the high-voltage connector 103 is fully connected, the voltage signals corresponding to the input and output terminals of each high-voltage load satisfy the following relationship A: U out =k×U in U in relation A in It is the voltage signal at the input terminal, U out This is the output voltage signal, where k represents the voltage ratio under normal circuit impedance, calibrated by system parameters. When the connector becomes loose or disconnected, the circuit impedance changes abruptly, and the voltage difference or ratio between the voltage signals at both ends of the high-voltage load exceeds the allowable threshold. At this time, the control module 30 determines that there is a fault in the high-voltage interlock and triggers a safety action (such as alarming or disconnecting the high-voltage interlock system 01). Similarly, when the target voltage signal of the high-voltage load module 102 and the predicted voltage signal determined based on the current signal acquired by the current acquisition module 202 satisfy the relationship B: U out =I out R total If the condition is met, it indicates that the high-voltage circuit module 10 is fault-free; if relationship B is not satisfied, it indicates that the high-voltage circuit module 10 is faulty. In this relationship B, U out It is the output voltage signal, the target voltage signal, I. out R total It refers to the predicted voltage signal, I out This refers to the current signal at the output terminal of the high-voltage load module 102, R. total This refers to the total resistance of the high-voltage circuit module 10. Similarly, the input current signal and the output current signal acquired by the current acquisition module 202 satisfy the relationship C:I out = I in If the condition is met, it indicates that the high-voltage circuit is fault-free; if the above relationship C is not satisfied, it indicates that the high-voltage circuit is faulty.

[0052] For example, assume that the high-voltage load module 102 of the high-voltage interlock system 01 includes four high-voltage loads 1-4 connected in parallel.

[0053] In an optional embodiment, the voltage difference and voltage ratio of each high-voltage load can be calculated based on the received voltage signal. For example, the voltage difference of high-voltage load 1 is: ΔU1 = U out1 -U in1 The voltage ratio of high-voltage load 1 is k1=U out1 / U in1 The voltage difference of high-voltage load 2 is: ΔU2 = U out2 -U in2 The voltage ratio of high-voltage load 2 is k2=U out2 / U in2 The voltage difference of high-voltage load 3 is: ΔU3 = U out3 -U in3 The voltage ratio of high-voltage load 3 is k3=U out3 / U in3 The voltage difference of high-voltage load 4 is: ΔU4 = U out4 -U in4 The voltage ratio of high-voltage load 4 is k4=U out4 / U in4 The high-voltage interlock can be determined to be normal if the voltage difference ΔUi corresponding to the four parallel high-voltage loads is approximately equal to 0, and the voltage ratio ki corresponding to the four parallel high-voltage loads is approximately equal to the threshold k0; otherwise, the high-voltage interlock is determined to be abnormal. Thus, voltage acquisition modules 201 can be deployed at the input and output terminals of multiple high-voltage loads. By comparing the calculated voltage characteristics (such as voltage ratios and voltage differences) with reference thresholds, multiple assessments of the high-voltage load fault conditions can be made, and the fault point can be accurately located.

[0054] In another optional embodiment, the voltage difference and voltage ratio of each high-voltage load can be calculated based on the received voltage signal, and the predicted voltage signal at the output of the high-voltage load module 102 can be calculated based on the received current signal. For example, the voltage difference of high-voltage load 1 is: ΔU1 = U out1 -Uin1 The voltage ratio of high-voltage load 1 is k1=U out1 / U in1 The voltage difference of high-voltage load 2 is: ΔU2 = U out2 -U in2 The voltage ratio of high-voltage load 2 is k2=U out2 / U in2 The voltage difference of high-voltage load 3 is: ΔU3 = U out3 -U in3 The voltage ratio of high-voltage load 3 is k3=U out3 / U in3 The voltage difference of high-voltage load 4 is: ΔU4 = U out4 -U in4 The voltage ratio of high-voltage load 4 is k4=U out4 / U in4 Calculate the predicted voltage signal I. out R total The voltage difference corresponding to the four parallel high-voltage loads can satisfy ΔUi approximately equal to 0, and the voltage ratio corresponding to the four parallel high-voltage loads can satisfy ki approximately equal to the threshold k0, and the target voltage signal U at the output of the high-voltage load module 102 can be... out =I out R total Under normal circumstances, the high-voltage interlock is determined to be normal; otherwise, the high-voltage interlock is determined to be abnormal. Thus, the voltage acquisition module 201 and the current acquisition module 202 can be combined to perform cross-verification through the voltage and current relationship, adding an extra layer of fault determination and improving the accuracy of fault diagnosis.

[0055] In another optional embodiment, the voltage difference and voltage ratio of each high-voltage load can be calculated based on the received voltage signal, and the predicted voltage signal at the output of the high-voltage load module 102 can be calculated based on the received current signal. For example, the voltage difference of high-voltage load 1 is: ΔU1 = U out1 -U in1 The voltage ratio of high-voltage load 1 is k1=U out1 / U in1 The voltage difference of high-voltage load 2 is: ΔU2 = U out2 -U in2 The voltage ratio of high-voltage load 2 is k2=U out2 / U in2 The voltage difference of high-voltage load 3 is: ΔU3 = U out3 -U in3 The voltage ratio of high-voltage load 3 is k3=U out3 / U in3 The voltage difference of high-voltage load 4 is: ΔU4 = U out4-U in4 The voltage ratio of high-voltage load 4 is k4=U out4 / U in4 Calculate the predicted voltage signal I. out R total Compare the input current signal and output current signal of the high-voltage load module 102 to see if they are similar. The voltage difference between the four parallel high-voltage loads should satisfy ΔUi approximately equal to 0, and the voltage ratio between the four parallel high-voltage loads should satisfy ki approximately equal to the threshold k0. Furthermore, the target voltage signal U at the output of the high-voltage load module 102 should be... out =I out R total , and I in Approximately equal to I out If the condition is met, the high-voltage interlock is confirmed to be normal; otherwise, the high-voltage interlock is confirmed to be abnormal.

[0056] It should be noted that, to ensure the timeliness of sampling—that is, to allow sufficient time for the system to power down when the high-voltage interlock fails—the voltage acquisition modules 201 at the input and output ends must be matched with appropriate sampling frequencies, and the current acquisition modules 202 at the input and output ends must be matched with appropriate sampling frequencies. For example, if the detection period of the high-voltage interlock system 01 is 500ms (milliseconds), meaning the system is powered down within 0.5s, considering the potential interference with voltage and current acquisition, the sampling frequency of the voltage and current acquisition modules 202 is set to 100Hz to ensure the timeliness of sampling and to ensure that the delay in acquiring and releasing the software lock is controllable. Simultaneously, to ensure that the acquired voltage and current signals are data from the same period, the sampling frequencies of the voltage acquisition module 201 and the current acquisition module 202 are kept consistent, both being 100Hz.

[0057] In summary, addressing the shortcomings of traditional high-voltage interlocking schemes and existing software interlocking schemes, the aforementioned high-voltage interlocking system eliminates the low-voltage interlocking harness. High-voltage interlocking monitoring is achieved by acquiring voltage signals from the input and output terminals of the high-voltage load modules. Furthermore, to more accurately locate faulty high-voltage components (open circuit or short circuit), voltage acquisition modules are installed at both ends of each high-voltage load to collect the voltage at both ends. This also enhances electromagnetic interference resistance, improving voltage acquisition accuracy to a certain extent. Consideration is also given to the timeliness of sampling, ensuring controllable delays in software lock acquisition and release, allowing sufficient time for high-voltage power-off, reducing costs, improving reliability, and increasing fault location accuracy.

[0058] To facilitate better implementation of the fault detection process for the high-voltage interlock system provided in this application embodiment, this application embodiment also provides a fault detection method based on the above-described high-voltage interlock system. The meanings of the terms used are the same as in the high-voltage interlock system described above, and specific implementation details can be found in the descriptions in the system embodiments.

[0059] For example, such as Figure 6 As shown in the figure, this application provides a fault detection method, which is applied to the above-mentioned high-voltage interlocking system. The fault detection method includes the following steps: Step S701: Acquire the electrical signals corresponding to the input and / or output terminals of the high-voltage load through the electrical signal acquisition module of the high-voltage interlock system; Step S702: Obtain electrical signals through the control module of the high-voltage interlock system, and perform fault detection on the high-voltage circuit module based on the electrical signals to obtain the detection results of the high-voltage circuit module.

[0060] In some embodiments, the sampling frequency of the above-mentioned electrical signal acquisition module is determined based on the time required for the high-voltage interlock system to energize under high voltage.

[0061] In some embodiments, the above-mentioned electrical signal acquisition module includes a voltage acquisition module and / or a current acquisition module, with a voltage acquisition module respectively disposed at both ends of at least a portion of the high-voltage load. The current acquisition module is disposed at both ends of the high-voltage load module.

[0062] When the electrical signal acquisition module includes a voltage acquisition module and a current acquisition module, the sampling frequency of the voltage acquisition module and the sampling frequency of the current acquisition module are the same, and the corresponding sampling frequencies are determined based on the time required for the high-voltage interlock system to energize under high voltage.

[0063] Optionally, when the aforementioned electrical signal acquisition module includes a voltage acquisition module, the aforementioned electrical signal includes a voltage signal. Based on this, the aforementioned fault detection method may include: using a control module to perform fault detection on the high-voltage circuit module based on the difference analysis results between the voltage signals corresponding to the input and output terminals of the same high-voltage load, thereby obtaining the detection result of the high-voltage circuit module.

[0064] The difference analysis results can be selected from multiple options and can be adjusted according to the actual situation; no restrictions are imposed here.

[0065] For example, the above difference analysis results include the voltage difference between the voltage signals corresponding to the input and output terminals of the same high-voltage load, and / or the voltage ratio.

[0066] In this example, the above-mentioned fault detection method further includes: comparing the voltage difference of each high-voltage load with a first preset threshold through the control module to obtain a first comparison result of each high-voltage load; comparing the voltage ratio of each high-voltage load with a second preset threshold to obtain a second comparison result of each high-voltage load; and determining that the detection result is that the high-voltage circuit module is faulty, and identifying the faulty component in the high-voltage circuit module, if there is an abnormal comparison result in the first comparison result and / or the second comparison result.

[0067] Optionally, if the above-mentioned electrical signal acquisition module includes a current acquisition module, the above-mentioned electrical signal includes a current signal.

[0068] Based on this, the above-mentioned fault detection method may include: using the control module to perform fault detection on the high-voltage circuit module based on the third comparison result between the current signals corresponding to the input and output terminals of the high-voltage load module, and obtaining the detection result of the high-voltage circuit module.

[0069] Based on this, the above-mentioned fault detection method may further include: determining the resistance of the high-voltage load module by the control module according to the distribution information of each high-voltage load in the high-voltage load module; determining the predicted voltage signal of the corresponding output terminal of the high-voltage load module based on the current signal and resistance of the output terminal of the high-voltage load module; and performing fault detection on the high-voltage circuit module according to the fourth comparison result between the target voltage signal and the predicted voltage signal of the corresponding output terminal of the high-voltage load module to obtain the detection result of the high-voltage circuit module; wherein, the target voltage signal is acquired by the voltage acquisition module set at the output terminal of the high-voltage load module, or calculated based on the voltage signal of the corresponding output terminal of each high-voltage load.

[0070] The fault detection method provided in this application involves acquiring electrical signals corresponding to the input and / or output terminals of the high-voltage load through the electrical signal acquisition module of the aforementioned high-voltage interlock system; obtaining the electrical signals through the control module of the aforementioned high-voltage interlock system; and performing fault detection on the high-voltage circuit module based on the electrical signals to obtain the detection result of the high-voltage circuit module. Thus, based on this high-voltage interlock system, the complex layout problem caused by wiring harness influence in traditional high-voltage interlock schemes is solved, and the fault detection accuracy and efficiency are improved by acquiring the electrical signals corresponding to the input and / or output terminals of the high-voltage load.

[0071] In practice, each of the above modules can be implemented as an independent entity or can be combined arbitrarily to be implemented as the same or several entities. For the specific implementation methods and corresponding beneficial effects of each of the above modules, please refer to the previous method embodiments, which will not be repeated here.

[0072] This application also provides an electronic device, such as... Figure 7As shown, it illustrates a structural schematic diagram of the electronic device involved in the embodiments of this application, specifically: The electronic device may include components such as a processor 801 with one or more processing cores, a memory 802 with one or more storage media, a power supply 803, and an input unit 304. Those skilled in the art will understand that... Figure 7 The electronic device structure shown does not constitute a limitation on the electronic device and may include more or fewer components than shown, or combine certain components, or have different component arrangements. Wherein: The processor 801 is the control center of the electronic device. It connects various parts of the electronic device via various interfaces and lines, and performs various functions and processes data by running or executing computer programs and / or modules stored in the memory 802, and by calling data stored in the memory 802. Optionally, the processor 801 may include one or more processing cores; preferably, the processor 801 may integrate an application processor and a modem processor, wherein the application processor mainly handles the operating system, user interface, and applications, and the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 801.

[0073] The memory 802 can be used to store computer programs and modules. The processor 801 executes various functional applications and diagnostic schemes by running the computer programs and modules stored in the memory 802. The memory 802 may mainly include a program storage area and a data storage area. The program storage area may store the operating system, computer programs required for at least one function (such as voice prompt function, text input function, voice input function, scheme selection function, etc.), etc.; the data storage area may store data created according to the use of the electronic device. In addition, the memory 802 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device. Accordingly, the memory 802 may also include memory electronics to provide the processor 801 with access to the memory 802.

[0074] The electronic device also includes a power supply 803 that supplies power to the various components. Preferably, the power supply 803 can be logically connected to the processor 801 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system. The power supply 803 may also include one or more DC or AC power supplies, recharging systems, power fault detection circuits, power converters or inverters, power status indicators, and other arbitrary components.

[0075] The electronic device may also include an input unit 304, which can be used to receive input digital or character information and generate keyboard, mouse, joystick, optical or trackball signal inputs related to user settings and function control.

[0076] Although not shown, the electronic device may also include a display unit, etc., which will not be described in detail here. Specifically, in this embodiment, the processor 801 in the electronic device loads the executable files corresponding to the processes of one or more computer programs into the memory 802 according to the following instructions, and the processor 801 runs the computer programs stored in the memory 802 to realize various functions. For example: The electrical signals corresponding to the input and / or output terminals of the high-voltage load are acquired through the electrical signal acquisition module of the high-voltage interlock system. The electrical signals are acquired through the control module of the high-voltage interlock system, and fault detection of the high-voltage circuit module is performed based on the electrical signals to obtain the detection results of the high-voltage circuit module.

[0077] Therefore, the electronic device provided in this application embodiment can acquire electrical signals corresponding to the input and / or output terminals of the high-voltage load through the electrical signal acquisition module of the high-voltage interlock system; acquire electrical signals through the control module of the high-voltage interlock system; and perform fault detection on the high-voltage circuit module based on the electrical signals to obtain the detection results of the high-voltage circuit module. Thus, based on this high-voltage interlock system, the complex layout problem caused by wiring harness influence in traditional high-voltage interlock schemes is solved, and the fault detection accuracy and efficiency can be improved by acquiring electrical signals corresponding to the input and / or output terminals of the high-voltage load.

[0078] For details on the specific implementation methods and corresponding beneficial effects of the above operations, please refer to the detailed description of vehicle repair methods above, which will not be repeated here.

[0079] Those skilled in the art will understand that all or part of the steps in the various methods of the above embodiments can be performed by a computer program, or by a computer program controlling related hardware. The computer program can be stored in a storage medium and loaded and executed by a processor.

[0080] Therefore, embodiments of this application provide a storage medium storing a computer program that can be loaded by a processor to execute the steps of any of the vehicle repair methods provided in embodiments of this application. For example, the computer program can execute the following steps: The electrical signals corresponding to the input and / or output terminals of the high-voltage load are acquired through the electrical signal acquisition module of the high-voltage interlock system. The electrical signals are acquired through the control module of the high-voltage interlock system, and fault detection of the high-voltage circuit module is performed based on the electrical signals to obtain the detection results of the high-voltage circuit module.

[0081] Therefore, the storage medium provided in this application embodiment can acquire electrical signals corresponding to the input and / or output terminals of the high-voltage load through the electrical signal acquisition module of the high-voltage interlock system; acquire electrical signals through the control module of the high-voltage interlock system, and perform fault detection on the high-voltage circuit module based on the electrical signals to obtain the detection results of the high-voltage circuit module. Thus, based on this high-voltage interlock system, the complex layout problem caused by wiring harness influence in traditional high-voltage interlock schemes is solved, and the fault detection accuracy and efficiency can be improved by acquiring electrical signals corresponding to the input and / or output terminals of the high-voltage load.

[0082] For details on the specific implementation methods and corresponding beneficial effects of the above operations, please refer to the previous embodiments, which will not be repeated here.

[0083] The storage medium may include: read-only memory (ROM), random access memory (RAM), disk or optical disk, etc.

[0084] Since the computer program stored in the storage medium can execute the steps in any of the vehicle repair methods provided in the embodiments of this application, the beneficial effects that any of the fault detection methods provided in the embodiments of this application can achieve can be realized, as detailed in the preceding embodiments, and will not be repeated here.

[0085] According to one aspect of this application, a computer program product or computer program is provided, comprising computer instructions stored in a storage medium. A processor of a computer device reads the computer instructions from the storage medium and executes the computer instructions, causing the computer device to perform the aforementioned fault detection method.

[0086] The above provides a detailed description of a high-voltage interlocking system, fault detection method, electronic device, storage medium, and computer program product provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A high-voltage interlocking system, characterized in that, The high-voltage interlock system includes a high-voltage circuit module, an electrical signal acquisition module, and a control module. The high-voltage circuit module includes a high-voltage power supply and a high-voltage load module connected to the high-voltage power supply. The high-voltage load module includes at least one high-voltage load. The electrical signal acquisition module is connected to the high-voltage load module, and the control module is communicatively connected to the electrical signal acquisition module. The electrical signal acquisition module is used to acquire the electrical signals corresponding to the input and / or output terminals of the high-voltage load; The control module is used to acquire the electrical signal and perform fault detection on the high-voltage circuit module based on the electrical signal to obtain the detection result of the high-voltage circuit module.

2. The high-voltage interlocking system according to claim 1, characterized in that, The electrical signal acquisition module includes a voltage acquisition module and / or a current acquisition module, wherein at least some of the high-voltage loads are respectively provided with the voltage acquisition module at both ends, and the high-voltage load module is provided with the current acquisition module at both ends.

3. The high-voltage interlocking system according to claim 2, characterized in that, When the electrical signal acquisition module includes the voltage acquisition module, the electrical signal includes a voltage signal; The control module is also used to perform fault detection on the high-voltage circuit module based on the analysis results of the difference between the voltage signals corresponding to the input and output terminals of the same high-voltage load, and to obtain the detection result of the high-voltage circuit module.

4. The high-voltage interlocking system according to claim 3, characterized in that, The difference analysis results include the voltage difference between the voltage signals corresponding to the input and output terminals of the same high-voltage load, and / or the voltage ratio. The control module is further configured to compare the voltage difference of each high-voltage load with a first preset threshold to obtain a first comparison result of each high-voltage load; compare the voltage ratio of each high-voltage load with a second preset threshold to obtain a second comparison result of each high-voltage load; and determine that the detection result indicates a fault in the high-voltage circuit module and identify the faulty component in the high-voltage circuit module if there is an abnormal comparison result in the first comparison result and / or the second comparison result.

5. The high-voltage interlocking system according to claim 2, characterized in that, When the electrical signal acquisition module includes the current acquisition module, the electrical signal includes a current signal; The control module is also used to perform fault detection on the high-voltage circuit module based on a third comparison result between the current signals corresponding to the input and output terminals of the high-voltage load module, and to obtain the detection result of the high-voltage circuit module.

6. The high-voltage interlocking system according to claim 2, characterized in that, When the electrical signal acquisition module includes the current acquisition module, the electrical signal includes a current signal; The control module is further configured to determine the resistance of the high-voltage load module based on the distribution information of each high-voltage load in the high-voltage load module; determine the predicted voltage signal of the corresponding output terminal of the high-voltage load module based on the current signal corresponding to the output terminal of the high-voltage load module and the resistance; and perform fault detection on the high-voltage circuit module based on the fourth comparison result between the target voltage signal and the predicted voltage signal of the corresponding output terminal of the high-voltage load module to obtain the detection result of the high-voltage circuit module. The target voltage signal is acquired based on the voltage acquisition module located at the output terminal of the high-voltage load module, or calculated based on the voltage signal at the output terminal of each high-voltage load.

7. The high-voltage interlocking system according to any one of claims 1 to 6, characterized in that, The sampling frequency of the electrical signal acquisition module is determined based on the time required for the high-voltage interlock system to energize under high voltage.

8. A fault detection method, characterized in that, Applied to the high-voltage interlocking system as described in any one of claims 1 to 7, the method comprises: The electrical signal acquisition module of the high-voltage interlock system acquires the electrical signals corresponding to the input and / or output terminals of the high-voltage load. The electrical signal is acquired through the control module of the high-voltage interlock system, and the high-voltage circuit module is fault detected based on the electrical signal to obtain the detection result of the high-voltage circuit module.

9. An electronic device, characterized in that, It includes a processor and a memory, wherein the memory stores a computer program that, when executed by the processor, causes the processor to perform the steps of the fault detection method of claim 8.

10. A computer-readable storage medium, characterized in that, It includes a computer program that, when run on an electronic device, causes the electronic device to perform the steps of the fault detection method of claim 8.

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