All-in-one system high-voltage loop control method and system and storage medium

Abstract

The invention relates to an all-in-one system high-voltage loop control method and system and a storage medium, and the method comprises the steps: generating a high-voltage loop closing request when a power-on request is received and the real-time state of a high-voltage loop relay meets a first condition; after a pre-charging loop relay is controlled to be closed according to the high-voltage loop closing request, when the pre-charging voltage real-time value meets a second condition, a main loop relay closing request is generated; after the main loop relay closing request is received and the real-time state of the high-voltage loop relay meets a third condition, a main loop relay closing allowing request is generated, the main loop relay is controlled to be closed, power-on is completed, and after each request is generated, corresponding control is carried out according to the request, power-on is completed. The closing state of the real-time state of the high-voltage loop relay is detected and fed back, so that the condition that the closing of the main relay is earlier than the closing of the pre-charging relay is avoided; and each step is carried out through a fixed time sequence and is monitored, so that troubleshooting and fault positioning are facilitated.

Description

Technical Field

[0001] The present application relates to the field of new energy high-voltage circuits, and in particular to an all-in-one system high-voltage circuit control method, system and storage medium. Background Art

[0002] At present, the all-in-one system of new energy vehicles includes VCU (Vehicle Control Unit), all-in-one unit, and ICU (Instrument Control Unit). The VCU control unit is a central control unit responsible for issuing power-on timing instructions for the entire vehicle and supervising the status of components; the all-in-one unit is responsible for the execution of the relay switch of the main and auxiliary circuits of the high-voltage system and the feedback of the switch status; the ICU control unit is responsible for the display of fault warning information and maintenance suggestions.

[0003] In the related technology, when the battery management system receives a high-voltage power-on request, the pre-charge relay is closed (secondary circuit), and after the pre-charge voltage reaches the preset value, the main relay is driven to close (main circuit); in actual engineering use, the main circuit often closes before the secondary circuit, generating surge current, causing relay adhesion and system damage. In addition, if the main and secondary relays fail during the power-on process, it is difficult to trace the specific cause of the failure. Especially for complex all-in-one systems, the cause of the failure is even more difficult to troubleshoot. Summary of the invention

[0004] The embodiments of the present application provide an all-in-one system high-voltage circuit control method, system and storage medium to solve the problem in the related art that during the power-on process of the battery management system, the main relay often closes before the pre-charge relay, generating surge current, causing relay sticking and system damage.

[0005] In a first aspect, a method for controlling a high-voltage circuit of an all-in-one system is provided, comprising:

[0006] After receiving the power-on request, when the real-time state of the high-voltage circuit relay meets the first condition, a high-voltage circuit closing request is generated; the high-voltage circuit relay includes a main circuit relay and a pre-charging circuit relay;

[0007] After controlling the pre-charging circuit relay to close according to the high-voltage circuit closing request, when the real-time value of the pre-charging voltage satisfies a second condition, generating a main circuit relay closing request;

[0008] After receiving the main circuit relay closing request, when the real-time state of the high-voltage circuit relay satisfies the third condition, generating a request to allow the main circuit relay to close;

[0009] The request to allow the main circuit relay to close is received, and the main circuit relay is controlled to close to complete power-on.

[0010] In some embodiments, after receiving a power-on request, when the real-time state of the high-voltage circuit relay satisfies a first condition, generating a high-voltage circuit closing request specifically includes the following steps:

[0011] After receiving the power-on request, obtain the real-time status of the high-voltage circuit relay;

[0012] Compare the states of the main circuit relay and the pre-charging circuit relay with a first condition; the first condition is that both the main circuit relay and the pre-charging circuit relay are in a disconnected state;

[0013] When the states of the main circuit relay and the pre-charging circuit relay are the same as the first condition, a high-voltage circuit closing request is generated.

[0014] In some embodiments, when the states of the main circuit relay and the pre-charging circuit relay are different from the first condition, the power-on request is rejected, and the power-on request time and the states of the main circuit relay and the pre-charging circuit relay at that time are stored and recorded.

[0015] In some embodiments, after controlling the pre-charging circuit relay to close according to the high-voltage circuit closing request, when the real-time value of the pre-charging voltage satisfies the second condition, generating a main circuit relay closing request includes the following steps:

[0016] After controlling the pre-charging circuit relay to close according to the high-voltage circuit closing request, obtaining the real-time value of the pre-charging voltage; the second condition is that the real-time value of the pre-charging voltage is equal to the design value;

[0017] Compare the real-time value of the pre-charge voltage with the second condition; the second condition is that the real-time value of the pre-charge voltage is equal to the design value;

[0018] When the real-time value of the pre-charge voltage is equal to the design value, a main circuit relay closing request is generated.

[0019] In some embodiments, comparing the real-time value of the pre-charge voltage with the second condition further comprises the following steps:

[0020] Obtain the design time and actual time required for the real-time value of the pre-charge voltage of the pre-charge circuit relay to increase from zero to the design value;

[0021] Compare design time with actual time;

[0022] If the difference between the design time and the actual time is within the first design range, it indicates that the pre-charging circuit relay is normal, and a main circuit relay closing request is generated;

[0023] If the difference between the design time and the actual time exceeds the first design range, it indicates that the pre-charging circuit relay is abnormal, and a main circuit relay closing request is generated;

[0024] If the difference between the design time and the actual time exceeds the second design range, it indicates that the pre-charging circuit relay is abnormal and no main circuit relay closing request is generated; the first design range is within the second design range.

[0025] In some embodiments, after receiving the main circuit relay closing request, when the real-time state of the high-voltage circuit relay satisfies the third condition, generating a request to allow the main circuit relay to close includes the following steps:

[0026] After receiving the main circuit relay closing request, obtain the real-time status of the high-voltage circuit relay;

[0027] Compare the states of the main circuit relay and the pre-charging circuit relay with a third condition; the third condition is that the main circuit relay is in an open state and the auxiliary circuit relay is in a closed state;

[0028] When the states of the main circuit relay and the pre-charging circuit relay are the same as the third condition, a main circuit relay closing request is generated.

[0029] In some embodiments, when the states of the main circuit relay and the pre-charging circuit relay are different from the third condition, the main circuit relay closing request is rejected, and the states of the main circuit relay and the pre-charging circuit relay at that time are stored and recorded.

[0030] In a second aspect, an all-in-one system high-voltage circuit control system is provided, comprising:

[0031] An all-in-one unit, which is used to obtain the real-time status of the high-voltage circuit relay and the real-time value of the pre-charge voltage, and is used to control the opening and closing of the high-voltage circuit relay;

[0032] A VCU control unit, which is connected to the all-in-one unit and receives the real-time status of the high-voltage circuit relay and the power-on request obtained by the all-in-one unit;

[0033] The all-in-one unit and the VCU control unit are powered on according to the following steps, specifically including:

[0034] The VCU control unit is used to generate a high-voltage circuit closing request after receiving a power-on request when the received real-time state of the high-voltage circuit relay meets a first condition; the high-voltage circuit relay includes a main circuit relay and a pre-charging circuit relay;

[0035] The all-in-one unit is used to generate a main circuit relay closing request after controlling the pre-charge circuit relay to close according to the high-voltage circuit closing request, when the acquired real-time value of the pre-charge voltage meets the second condition;

[0036] The VCU control unit is used for generating a request to allow the main circuit relay to close after receiving the main circuit relay closing request when the received real-time state of the high-voltage circuit relay meets the third condition;

[0037] The all-in-one unit is used to receive the request to allow the main circuit relay to close, and control the main circuit relay to close to complete power-on.

[0038] In some embodiments, an ICU control unit is further included, and the ICU control unit is connected to the all-in-one unit and the VCU control unit;

[0039] The ICU control unit is used to alarm all-in-one damage when the real-time state of the high-voltage circuit relay is different from the first condition, and display the states of the main circuit relay and the pre-charging circuit relay;

[0040] The ICU control unit is used to alarm all-in-one damage and display the status of the main circuit relay and the pre-charge circuit relay when the real-time value of the pre-charge voltage does not meet the second condition;

[0041] The ICU control unit is used to, after receiving a request to close the main circuit relay, issue an alarm for multi-in-one damage when the real-time status of the high-voltage circuit relay does not meet the third condition, and display the status of the main circuit relay and the pre-charging circuit relay.

[0042] In a third aspect, a computer-readable storage medium is provided, on which an all-in-one system high-voltage circuit control program is stored, wherein when the all-in-one system high-voltage circuit control program is executed by a processor, the steps of the all-in-one system high-voltage circuit control method are implemented.

[0043] The beneficial effects of the technical solution provided by this application include:

[0044] The embodiment of the present application provides an all-in-one system high-voltage circuit control method, system and storage medium, after receiving a power-on request, when the real-time state of the high-voltage circuit relay meets the first condition, a high-voltage circuit closing request is generated; the high-voltage circuit relay includes a main circuit relay and a pre-charging circuit relay; after controlling the pre-charging circuit relay to close according to the high-voltage circuit closing request, when the real-time value of the pre-charging voltage meets the second condition, a main circuit relay closing request is generated; after receiving the main circuit relay closing request, when the real-time state of the high-voltage circuit relay meets the third condition, a main circuit relay closing request is generated; the main circuit relay closing request is received, and the main circuit relay is controlled to close to complete the power-on. In the above steps, each time a request is generated and the corresponding control is performed according to the request, the closing state of the main circuit relay and the pre-charging circuit relay is detected and fed back once to ensure that the main relay will not close before the pre-charging relay, thereby avoiding surges.

[0045] In addition, the above steps are completed in a fixed sequence. If they are not carried out according to the fixed requirements each time, the next step will not be performed and a warning will be issued, which is conducive to protecting hardware equipment, further reducing the failure rate in the development process, solving the problem that it is difficult to troubleshoot and locate faults in all-in-one systems, and improving the efficiency of solving fault points.

[0046] The control method is implemented using software, adapted to existing hardware circuits, highly flexible, and has good usability and economy. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0048] Figure 1 An architectural diagram of an all-in-one system provided in the related art;

[0049] Figure 2 A timing diagram of the high-voltage circuit control process of the all-in-one system provided in an embodiment of the present application;

[0050] Figure 3 A schematic flow chart of the general process of the all-in-one system high-voltage circuit control method provided in an embodiment of the present application. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0052] It should be understood that:

[0053] refer to Figure 1As shown in the figure, the all-in-one system of new energy vehicles includes VCU (Vehicle Control Unit), all-in-one unit, and ICU (Instrument Control Unit). The VCU control unit is a central control unit responsible for issuing power-on timing instructions for the entire vehicle and supervising the status of components; the all-in-one unit is responsible for the execution of the relay switches of the main and auxiliary circuits of the high-voltage system and the feedback of the switch status; the ICU control unit is responsible for the display of fault warning information and maintenance suggestions.

[0054] When the battery management system receives a high-voltage power-on request, the pre-charge relay closes (secondary circuit), and when the pre-charge voltage reaches the preset value, it drives the main relay to close (main circuit); in actual engineering use, the main circuit often closes before the secondary circuit, generating surge current, causing relay adhesion and system damage. In addition, if the main and secondary relays fail during the power-on process, it is difficult to trace the specific cause of the failure. Especially for complex all-in-one systems, the cause of the failure is even more difficult to troubleshoot.

[0055] The embodiments of the present application provide an all-in-one system high-voltage circuit control method, system and storage medium, which can solve the problem in the related art that during the power-on process of the battery management system, the main relay often closes before the pre-charge relay, generating surge current, causing relay sticking and system damage.

[0056] First, see Figure 2 and Figure 3 , an all-in-one system high-voltage circuit control system, comprising:

[0057] An all-in-one unit, which is used to obtain the real-time status of the high-voltage circuit relay and the real-time value of the pre-charge voltage, and is used to control the opening and closing of the high-voltage circuit relay;

[0058] A VCU control unit, which is connected to the all-in-one unit and receives the real-time status of the high-voltage circuit relay and the power-on request obtained by the all-in-one unit;

[0059] The all-in-one unit and the VCU control unit are powered on according to the following steps, specifically including:

[0060] The VCU control unit is used to generate a high-voltage circuit closing request after receiving a power-on request when the received real-time state of the high-voltage circuit relay meets a first condition; the high-voltage circuit relay includes a main circuit relay and a pre-charging circuit relay;

[0061] The all-in-one unit is used to generate a main circuit relay closing request after controlling the pre-charge circuit relay to close according to the high-voltage circuit closing request, when the acquired real-time value of the pre-charge voltage meets the second condition;

[0062] The VCU control unit is used for generating a request to allow the main circuit relay to close after receiving the main circuit relay closing request when the received real-time state of the high-voltage circuit relay meets the third condition;

[0063] The all-in-one unit is used to receive the request to allow the main circuit relay to close, and control the main circuit relay to close to complete power-on.

[0064] In some preferred embodiments, for the all-in-one system high-voltage circuit control system, the all-in-one system high-voltage circuit control system further includes an ICU control unit, which is connected to the all-in-one unit and the VCU control unit;

[0065] The ICU control unit is used to alarm all-in-one damage when the real-time state of the high-voltage circuit relay is different from the first condition, and display the states of the main circuit relay and the pre-charging circuit relay;

[0066] The ICU control unit is used to alarm all-in-one damage and display the status of the main circuit relay and the pre-charge circuit relay when the real-time value of the pre-charge voltage does not meet the second condition;

[0067] The ICU control unit is used to, after receiving a request to close the main circuit relay, issue an alarm for multi-in-one damage when the real-time status of the high-voltage circuit relay does not meet the third condition, and display the status of the main circuit relay and the pre-charging circuit relay.

[0068] The above realizes that during the high-voltage circuit closure process, the closing sequence of the main and auxiliary circuit relays in the system is supervised by the VCU control unit. Compared with directly driving the main and auxiliary circuits to close, it can effectively avoid abnormal closure of the high-voltage circuit and damage to the all-in-one system, which is beneficial to protect hardware equipment and further reduce the failure rate during the development process. The main and auxiliary circuit relays are tested for each execution request to avoid the main relay closing before the pre-charge relay closing, resulting in inrush current.

[0069] Second, see Figure 2 and Figure 3 , an all-in-one system high-voltage circuit control method, comprising:

[0070] Step 100: after receiving a power-on request, when the real-time state of the high-voltage circuit relay meets a first condition, generating a high-voltage circuit closing request; the high-voltage circuit relay includes a main circuit relay and a pre-charging circuit relay;

[0071] Step 101, after controlling the pre-charge circuit relay to close according to the high-voltage circuit closing request, when the real-time value of the pre-charge voltage meets a second condition, generating a main circuit relay closing request;

[0072] Step 102: after receiving the main circuit relay closing request, when the real-time state of the high-voltage circuit relay satisfies the third condition, generating a request to allow the main circuit relay to close;

[0073] Step 1003: Receive the request to allow the main circuit relay to close, and control the main circuit relay to close, thereby completing power-on.

[0074] For the above steps, please refer to Figure 2 The timing description includes the following steps:

[0075] Step 100 includes sequence 1 and sequence 2. Sequence 1 includes the VCU control unit receiving the driver pressing button M (eg Figure 2 Sequence 2 includes obtaining the real-time status of the high-voltage circuit relay using the all-in-one unit, and then using the VCU control unit to perform a safety analysis in combination with the obtained real-time status of the high-voltage circuit relay, that is, when the first condition is met, a high-voltage circuit closing request is generated;

[0076] Step 101 includes sequence 3, sequence 4 and sequence 5; sequence 3 includes the VCU control unit sending a high-voltage circuit closing request to the all-in-one unit; the all-in-one unit controls the pre-charge circuit relay to close according to the high-voltage circuit closing request; sequence 4 includes the all-in-one unit obtaining the real-time state of the high-voltage circuit relay and the real-time value of the pre-charge voltage, and sending the real-time value of the pre-charge voltage after the real-time value of the pre-charge voltage reaches the design value, and generating a main circuit relay closing request;

[0077] Sequence 5: The VCU control unit receives the real-time status of the high-voltage circuit relay from the all-in-one unit, and determines whether the second condition is met. If the second condition is met, a main circuit relay closing request is generated;

[0078] Step 102 includes sequence 5; in sequence 5, the VCU control unit receives the real-time status of the high-voltage circuit relay from the all-in-one unit, and determines whether the real-time status of the high-voltage circuit relay satisfies a third condition, and generates a request to allow the main circuit relay to close if the third condition is met;

[0079] Step 103 includes sequence 6 and sequence 7; sequence 6 includes the all-in-one unit receiving the VCU control unit's request to allow the main circuit relay to close, and controlling the main circuit relay to close, and sequence 7, the VCU control unit monitors the all-in-one unit's request and the relay status of the main and auxiliary circuits, and performs fault diagnosis. For example, if the all-in-one system is abnormally closed (i.e., the main circuit relay is closed before the auxiliary circuit relay) or is not supervised by the VCU and violates the regulations (i.e., the main circuit relay is not requested to close to the VCU), the VCU reports the fault to the ICU, and the instrument prompts the risk of damage to the all-in-one.

[0080] Each time a request is generated in the above steps, and after the corresponding control is performed according to the request, the closing status of the main circuit relay and the pre-charging circuit relay is detected and fed back once to ensure that the main relay does not close before the pre-charging relay, avoiding surges.

[0081] In addition, the above steps are completed in a fixed sequence. If they are not carried out according to the fixed requirements each time, the next step will not be performed and a warning will be issued, which is conducive to protecting hardware equipment, further reducing the failure rate in the development process, solving the problem that it is difficult to troubleshoot and locate faults in all-in-one systems, and improving the efficiency of solving fault points.

[0082] The control method is implemented using software, adapted to existing hardware circuits, highly flexible, and has good usability and economy.

[0083] Through the above settings, the all-in-one system high-voltage circuit control system makes judgments for each detection in each time sequence, solves the disadvantage that it is difficult to troubleshoot and locate the faults of the all-in-one system, and improves the efficiency of solving the fault points. For the specific implementation method, the following is an explanation of the all-in-one system high-voltage circuit control method:

[0084] For step 100

[0085] After receiving the power-on request, when the real-time state of the high-voltage circuit relay meets the first condition, a high-voltage circuit closing request is generated, which specifically includes the following steps:

[0086] After receiving the power-on request, obtain the real-time status of the high-voltage circuit relay;

[0087] Compare the states of the main circuit relay and the pre-charging circuit relay with a first condition; the first condition is that both the main circuit relay and the pre-charging circuit relay are in a disconnected state;

[0088] When the states of the main circuit relay and the pre-charging circuit relay are the same as the first condition, a high-voltage circuit closing request is generated;

[0089] When the states of the main circuit relay and the pre-charging circuit relay are different from the first condition, the power-on request is rejected, and the power-on request time and the states of the main circuit relay and the pre-charging circuit relay at that time are stored and recorded, thus providing effective data for subsequent fault analysis.

[0090] For step 101

[0091] After controlling the pre-charging circuit relay to close according to the high-voltage circuit closing request, when the real-time value of the pre-charging voltage meets the second condition, generating a main circuit relay closing request, including the following steps:

[0092] After controlling the pre-charging circuit relay to close according to the high-voltage circuit closing request, obtaining the real-time value of the pre-charging voltage; the second condition is that the real-time value of the pre-charging voltage is equal to the design value;

[0093] Compare the real-time value of the pre-charge voltage with the second condition; the second condition is that the real-time value of the pre-charge voltage is equal to the design value;

[0094] When the real-time value of the pre-charge voltage is equal to the design value, a main circuit relay closing request is generated;

[0095] Wherein, comparing the real-time value of the pre-charge voltage with the second condition further comprises the following steps:

[0096] Obtain the design time and actual time required for the real-time value of the pre-charge voltage of the pre-charge circuit relay to increase from zero to the design value;

[0097] Compare design time with actual time;

[0098] If the difference between the design time and the actual time is within the first design range, it indicates that the pre-charging circuit relay is normal, and a main circuit relay closing request is generated;

[0099] If the difference between the design time and the actual time exceeds the first design range, it indicates that the pre-charging circuit relay is abnormal, and a main circuit relay closing request is generated;

[0100] If the difference between the design time and the actual time exceeds the second design range, it indicates that the pre-charging circuit relay is abnormal and no main circuit relay closing request is generated; the first design range is within the second design range.

[0101] It is believed that if the first design range is exceeded, the pre-charge voltage will not be reached, and there is a problem with the pre-charge circuit relay at this time.

[0102] For step 102

[0103] After receiving the main circuit relay closing request, when the real-time state of the high-voltage circuit relay meets the third condition, generating a request to allow the main circuit relay to close, including the following steps:

[0104] After receiving the main circuit relay closing request, obtain the real-time status of the high-voltage circuit relay;

[0105] Compare the states of the main circuit relay and the pre-charging circuit relay with a third condition; the third condition is that the main circuit relay is in an open state and the auxiliary circuit relay is in a closed state;

[0106] When the states of the main circuit relay and the pre-charging circuit relay are the same as the third condition, a main circuit relay closing request is generated;

[0107] When the states of the main circuit relay and the pre-charging circuit relay are different from the third condition, the main circuit relay closing request is rejected, and the states of the main circuit relay and the pre-charging circuit relay at this time are stored and recorded.

[0108] The above steps illustrate that when the conditions are not met, the VCU control unit can record or make a preliminary fault judgment, and then display it in conjunction with the ICU control unit, so that it is possible to know specifically which sequence or step the fault occurs in, and record the status of the main circuit relay and pre-charge circuit relay at the time, so as to facilitate subsequent difficult-to-detect and locate faults, thereby improving the efficiency of solving fault points, and realizing a combination of fault diagnosis and instrument prompts.

[0109] It should be understood for this application that the all-in-one system can be replaced by other integrated control systems, such as an integrated PDU (Power Distribution Unit), an integrated BMS (Battery Management System), etc.

[0110] The above all-in-one system high-voltage circuit control system and all-in-one system high-voltage circuit control method first describe the architecture of the all-in-one system high-voltage circuit control system, and then describe the specific steps of the all-in-one system high-voltage circuit control method in conjunction with each unit of the architecture.

[0111] In the third aspect, the embodiment of the present application provides an all-in-one system high-voltage circuit control device, which can be a personal computer (PC), a laptop computer, a server, or other device with data processing functions.

[0112] In the embodiment of the present application, the all-in-one system high-voltage circuit control device may include a processor, a memory, a communication interface, and a communication bus.

[0113] The communication bus may be of any type and is used to interconnect the processor, the memory, and the communication interface.

[0114] The communication interface includes input / output (I / O) interface, physical interface and logical interface, etc., which are used to realize the interconnection of devices inside the all-in-one system high-voltage circuit control device, and the interface used to realize the interconnection between the all-in-one system high-voltage circuit control device and other devices (such as other computing devices or user devices). The physical interface can be an Ethernet interface, an optical fiber interface, an ATM interface, etc.; the user device can be a display (Display), a keyboard (Keyboard), etc.

[0115] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0116] The processor may be a general-purpose processor, and the general-purpose processor may call the all-in-one system high-voltage circuit control program stored in the memory, and execute the all-in-one system high-voltage circuit control method provided in the embodiment of the present application. For example, the general-purpose processor may be a central processing unit (CPU). The method executed when the all-in-one system high-voltage circuit control program is called may refer to the various embodiments of the all-in-one system high-voltage circuit control method of the present application, and will not be repeated here.

[0117] In a fourth aspect, an embodiment of the present application also provides a computer-readable storage medium.

[0118] The computer-readable storage medium of the present application stores an all-in-one system high-voltage circuit control program, wherein when the all-in-one system high-voltage circuit control program is executed by a processor, the steps of the all-in-one system high-voltage circuit control method as described above are implemented.

[0119] Among them, the method implemented when the all-in-one system high-voltage circuit control program is executed can refer to the various embodiments of the all-in-one system high-voltage circuit control method of the present application, and will not be repeated here.

[0120] It should be noted that the serial numbers of the above-mentioned embodiments of the present application are only for description and do not represent the advantages or disadvantages of the embodiments.

[0121] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0122] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0123] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. An all-in-one system high-voltage circuit control method, characterized in that: It includes: After receiving the power-on request, when the real-time state of the high-voltage circuit relay meets the first condition, a high-voltage circuit closing request is generated; the high-voltage circuit relay includes a main circuit relay and a pre-charging circuit relay; After controlling the pre-charging circuit relay to close according to the high-voltage circuit closing request, when the real-time value of the pre-charging voltage satisfies a second condition, generating a main circuit relay closing request; After receiving the main circuit relay closing request, when the real-time state of the high-voltage circuit relay satisfies the third condition, generating a request to allow the main circuit relay to close; The request to allow the main circuit relay to close is received, and the main circuit relay is controlled to close to complete power-on.

2. The all-in-one system high voltage circuit control method according to claim 1, characterized in that: After receiving the power-on request, when the real-time state of the high-voltage circuit relay meets the first condition, a high-voltage circuit closing request is generated, which specifically includes the following steps: After receiving the power-on request, obtain the real-time status of the high-voltage circuit relay; Compare the states of the main circuit relay and the pre-charging circuit relay with a first condition; the first condition is that both the main circuit relay and the pre-charging circuit relay are in a disconnected state; When the states of the main circuit relay and the pre-charging circuit relay are the same as the first condition, a high-voltage circuit closing request is generated.

3. The all-in-one system high voltage circuit control method according to claim 2, characterized in that: When the states of the main circuit relay and the pre-charging circuit relay are different from the first condition, the power-on request is rejected, and the power-on request time and the states of the main circuit relay and the pre-charging circuit relay at that time are stored and recorded.

4. The all-in-one system high-voltage circuit control method according to claim 1, characterized in that: After controlling the pre-charging circuit relay to close according to the high-voltage circuit closing request, when the real-time value of the pre-charging voltage meets the second condition, generating a main circuit relay closing request, including the following steps: After controlling the pre-charging circuit relay to close according to the high-voltage circuit closing request, obtaining the real-time value of the pre-charging voltage; the second condition is that the real-time value of the pre-charging voltage is equal to the design value; Compare the real-time value of the pre-charge voltage with the second condition; the second condition is that the real-time value of the pre-charge voltage is equal to the design value; When the real-time value of the pre-charge voltage is equal to the design value, a main circuit relay closing request is generated.

5. The all-in-one system high-voltage circuit control method according to claim 4, characterized in that: Comparing the pre-charge voltage real-time value with the second condition also includes the following steps: Obtain the design time and actual time required for the real-time value of the pre-charge voltage of the pre-charge circuit relay to increase from zero to the design value; Compare design time with actual time; If the difference between the design time and the actual time is within the first design range, it indicates that the pre-charging circuit relay is normal, and a main circuit relay closing request is generated; If the difference between the design time and the actual time exceeds the first design range, it indicates that the pre-charging circuit relay is abnormal, and a main circuit relay closing request is generated; If the difference between the design time and the actual time exceeds the second design range, it indicates that the pre-charging circuit relay is abnormal and no main circuit relay closing request is generated; the first design range is within the second design range.

6. The all-in-one system high voltage circuit control method according to claim 1, characterized in that: After receiving the main circuit relay closing request, when the real-time state of the high-voltage circuit relay meets the third condition, generating a request to allow the main circuit relay to close, including the following steps: After receiving the main circuit relay closing request, obtain the real-time status of the high-voltage circuit relay; Compare the states of the main circuit relay and the pre-charging circuit relay with a third condition; the third condition is that the main circuit relay is in an open state and the auxiliary circuit relay is in a closed state; When the states of the main circuit relay and the pre-charging circuit relay are the same as the third condition, a main circuit relay closing request is generated.

7. The all-in-one system high voltage circuit control method according to claim 6, characterized in that: When the states of the main circuit relay and the pre-charging circuit relay are different from the third condition, the main circuit relay closing request is rejected, and the states of the main circuit relay and the pre-charging circuit relay at this time are stored and recorded.

8. An all-in-one system high-voltage circuit control system, characterized in that: It includes: An all-in-one unit, which is used to obtain the real-time status of the high-voltage circuit relay and the real-time value of the pre-charge voltage, and is used to control the opening and closing of the high-voltage circuit relay; A VCU control unit, which is connected to the all-in-one unit and receives the real-time status of the high-voltage circuit relay and the power-on request obtained by the all-in-one unit; The all-in-one unit and the VCU control unit are powered on according to the following steps, specifically including: The VCU control unit is used to generate a high-voltage circuit closing request after receiving a power-on request when the received real-time state of the high-voltage circuit relay meets a first condition; the high-voltage circuit relay includes a main circuit relay and a pre-charging circuit relay; The all-in-one unit is used to generate a main circuit relay closing request after controlling the pre-charge circuit relay to close according to the high-voltage circuit closing request, when the acquired real-time value of the pre-charge voltage meets the second condition; The VCU control unit is used for generating a request to allow the main circuit relay to close after receiving the main circuit relay closing request when the received real-time state of the high-voltage circuit relay meets the third condition; The all-in-one unit is used to receive the request to allow the main circuit relay to close, and control the main circuit relay to close to complete power-on.

9. The all-in-one high-voltage circuit control system according to claim 8, characterized in that: Also included is an ICU control unit, the ICU control unit being connected to the all-in-one unit and the VCU control unit; The ICU control unit is used to alarm all-in-one damage when the real-time state of the high-voltage circuit relay is different from the first condition, and display the states of the main circuit relay and the pre-charging circuit relay; The ICU control unit is used to alarm all-in-one damage and display the status of the main circuit relay and the pre-charge circuit relay when the real-time value of the pre-charge voltage does not meet the second condition; The ICU control unit is used to, after receiving a request to close the main circuit relay, issue an alarm for multi-in-one damage when the real-time status of the high-voltage circuit relay does not meet the third condition, and display the status of the main circuit relay and the pre-charging circuit relay.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores an all-in-one system high-voltage circuit control program, wherein when the all-in-one system high-voltage circuit control program is executed by a processor, the steps of the all-in-one system high-voltage circuit control method as described in any one of claims 1 to 7 are implemented.

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