Relay control method, system, device and medium

Abstract

The present invention discloses a relay control method, system, device and medium, wherein the relay control system comprises a parameter comparison module, a self-locking detection module, a relay driving module and a relay connected in sequence, wherein: the parameter comparison module is used to obtain the power supply parameter and parameter threshold of the relay, and sends a valid locking signal to the self-locking detection module when the power supply parameter is less than the parameter threshold; the self-locking detection module is used to send an invalid driving signal to the relay driving module after receiving the valid locking signal; the relay driving module is used to disconnect the relay after receiving the invalid driving signal. The present invention can solve the technical problem of relay adhesion caused by poor contact of the relay power supply circuit in the prior art.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a relay control method, system, equipment and medium. Background Art

[0002] In electric vehicles, the relay power supply is usually drawn from the power supply circuit of the external battery through the maintenance switch (MSD) and connected to the relay driver module, and then the relay control quality is used to control the opening and closing of the relay.

[0003] However, in practice, it is found that due to reasons such as car bumps or line aging, the relay power supply circuit will have poor contact and other phenomena. When the relay power supply circuit has a short-term poor contact, the relay will have intermittent continuous actions such as closing, disconnecting, and closing. When the relay is in the disconnected state, the voltage on the high-voltage bus is easily discharged. At this time, the battery management system (Battery Management System, BMS) does not receive the high-voltage request, and the driving signal of the BMS driving the relay is still in a high-level state, and the relay will still be controlled to close in an abnormal state, which is easy to cause the relay to stick.

[0004] Therefore, a better relay control scheme is urgently needed. Summary of the invention

[0005] The embodiments of the present application solve the technical problem of relay sticking caused by poor contact of the relay power supply circuit in the prior art by providing a relay control method, system, device and medium.

[0006] On the one hand, the present application provides a relay control system through an embodiment of the present application, wherein the relay control system includes a parameter comparison module, a self-locking detection module, a relay driving module and a relay connected in sequence, wherein:

[0007] The parameter comparison module is used to obtain the power supply parameter and parameter threshold of the relay, and send a valid locking signal to the self-locking detection module when the power supply parameter is less than the parameter threshold;

[0008] The self-locking detection module is used to send an invalid driving signal to the relay driving module after receiving the valid locking signal;

[0009] The relay driving module is used to control the relay to disconnect after receiving the invalid driving signal.

[0010] Optionally, the relay control system further comprises a BMS control module connected to the self-locking detection module, and after the power supply circuit of the relay is repaired after the relay is disconnected;

[0011] The parameter comparison module is further used to obtain the power supply parameter and parameter threshold of the relay, and when the power supply parameter is greater than or equal to the parameter threshold, send an invalid locking signal to the self-locking detection module to invalidly lock the self-locking detection module;

[0012] The BMS control module is used to send an unlocking control signal to the self-locking detection module to perform unlocking control on the invalid lock of the self-locking detection module; and send a relay control instruction to the self-locking detection module;

[0013] The self-locking detection module is further used to perform unlocking control after receiving the unlocking control signal, and send a valid driving signal to the relay driving module according to the received relay control instruction;

[0014] The relay driving module is further used to control the closing of the relay after receiving the effective driving signal.

[0015] Optionally, after the closing control, the step of obtaining the power supply parameter and parameter threshold of the relay is repeated until the BMS control module outputs an invalid unlocking control signal.

[0016] Optionally, the parameter comparison module is further configured to, when the power supply parameter is greater than or equal to the parameter threshold, repeatedly execute the step of acquiring the power supply parameter and the parameter threshold of the relay.

[0017] Optionally, the self-locking detection module is specifically used for:

[0018] When the relay control instruction is used to instruct to disconnect the relay, a valid drive signal is currently sent to the relay drive module.

[0019] Optionally, the self-locking detection module is specifically used for:

[0020] When the relay control instruction is used to instruct closing the relay, an invalid drive signal is currently sent to the relay drive module.

[0021] Optionally, the power supply parameter includes a power supply voltage and / or a power supply current.

[0022] On the other hand, the present application provides a relay control method through an embodiment of the present application, which is applied to a relay control system, wherein the relay control system includes a parameter comparison module, a self-locking detection module, a relay drive module and a relay connected in sequence, wherein:

[0023] Acquiring a power supply parameter and a parameter threshold of the relay through the parameter comparison module, and sending a valid locking signal to the self-locking detection module when the power supply parameter is less than the parameter threshold;

[0024] After receiving the effective locking signal, the self-locking detection module sends an invalid driving signal to the relay driving module;

[0025] After receiving the invalid driving signal, the relay driving module controls the relay to be disconnected.

[0026] For the contents not introduced or described in the embodiments of the present application, please refer to the relevant introduction in the aforementioned method embodiments, which will not be repeated here.

[0027] On the other hand, the present application provides a terminal device through an embodiment of the present application, and the terminal device includes: a processor, a memory, a communication interface and a bus; the processor, the memory and the communication interface are connected through the bus and complete communication with each other; the memory stores executable program code; the processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to execute the relay control method as described above.

[0028] On the other hand, the present application provides a computer-readable storage medium through an embodiment of the present application, wherein the computer-readable storage medium stores a program, and when the program runs on a terminal device, the relay control method as described above is executed.

[0029] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: A relay control system provided in the embodiments of the present application comprises a parameter comparison module, a self-locking detection module, a relay driving module and a relay connected in sequence, wherein: the parameter comparison module is used to obtain the power supply parameters and parameter thresholds of the relay, and sends a valid locking signal to the self-locking detection module when the power supply parameters are less than the parameter threshold; the self-locking detection module is used to send an invalid driving signal to the relay driving module after receiving the valid locking signal; the relay driving module is used to disconnect the relay after receiving the invalid driving signal. In the above scheme, the present application conveniently and efficiently disconnects the relay according to the power supply parameters and parameter thresholds of the relay, so as to effectively prevent the problem of relay adhesion, and also solves the technical problem of relay adhesion caused by poor contact of the relay power supply circuit in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 It is a structural schematic diagram of a relay control system provided in an embodiment of the present application.

[0032] Figure 2 It is a flow chart of a relay control method provided in an embodiment of the present application.

[0033] Figure 3 It is a structural diagram of a terminal device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0034] The embodiments of the present application solve the technical problem of relay sticking caused by poor contact of the relay power supply circuit in the prior art by providing a relay control method, system, device and medium.

[0035] The technical solution of the embodiment of the present application is to solve the above technical problems, and the overall idea is as follows:

[0036] The present application provides a relay control system, comprising a parameter comparison module, a self-locking detection module, a relay drive module and a relay connected in sequence, wherein:

[0037] The parameter comparison module is used to obtain the power supply parameter and parameter threshold of the relay, and send a valid locking signal to the self-locking detection module when the power supply parameter is less than the parameter threshold;

[0038] The self-locking detection module is used to send an invalid driving signal to the relay driving module after receiving the valid locking signal;

[0039] The relay driving module is used to control the relay to disconnect after receiving the invalid driving signal.

[0040] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0041] First of all, the term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0042] See also Figure 1 , is a schematic diagram of a relay control system provided in an embodiment of the present application. Figure 1 The relay control system shown includes a parameter comparison module 10, a self-locking detection module 20, a relay driving module 30 and a relay 40 connected in sequence. Optionally, the system may also include a BMS control module 50 connected to the self-locking detection module 20. Wherein:

[0043] The parameter comparison module 10 is used to obtain the power supply parameter and parameter threshold of the relay 40, and send a valid locking signal to the self-locking detection module 20 when the power supply parameter is less than the parameter threshold.

[0044] The parameter threshold of the relay described in this application is a system-defined setting, which can be determined according to the type of the relay. The power supply parameter of the relay is a parameter used to describe the power supply of the relay, which may include but is not limited to at least one of the following parameters such as: power supply voltage, power supply current or power supply power. When the power supply parameter is the power supply voltage, the parameter comparison module 10 may also be called a voltage comparison module, which is not limited in this application.

[0045] The parameter comparison module 10 has two inputs, namely, the power supply parameter of the relay (e.g., the power supply voltage U1) and the parameter threshold (e.g., the corresponding reference comparison voltage Ur). The parameter comparison module 10 is used to compare the input power supply parameter of the relay with the parameter threshold to determine whether an abnormality occurs in the power supply circuit of the relay. When the power supply parameter is greater than or equal to the parameter threshold, the parameter comparison module 10 can determine that the power supply circuit is normal and continue to perform the step of comparing the power supply parameter with the parameter threshold.

[0046] When the power supply parameter is less than the parameter threshold, the parameter comparison module 10 may determine that an abnormality has occurred in the power supply circuit and may send a valid locking signal (Local_Signal) to the self-locking detection module 20. Accordingly, the self-locking detection module 20 may receive the valid locking signal.

[0047] It should be noted that the output of the parameter comparison module 10 is a locking signal Local_Signal, whose state includes a valid state and an invalid state, that is, the parameter comparison module 10 can output a valid locking signal (referred to as a valid locking signal) and an invalid locking signal (referred to as an invalid locking signal).

[0048] The self-locking detection module 20 is used to send an invalid driving signal to the relay driving module 30 after receiving the valid locking signal.

[0049] After the self-locking detection module 20 receives the valid locking signal, the present application can send a valid driving signal to the relay driving module 30. Specifically, when the self-locking detection module 20 detects that Local_Signal is valid once, it can lock or lock itself, ignore the relay control instruction (Control_Signal) sent by the BMS control module 50, and directly output that the relay driving signal (Drive_Signal) is invalid, that is, output an invalid driving signal.

[0050] It is understandable that the drive signal Drive_Signal also includes two states, which specifically include an effective state and an invalid state. When the state of the drive signal is an effective state, it can be called an effective drive signal; conversely, when the state of the drive signal is an invalid state, it can be called an invalid drive signal.

[0051] The relay driving module 30 is used to control the relay 40 to be disconnected after receiving the invalid driving signal. Specifically, the relay driving module 30 can disconnect the relay 40 after receiving the invalid driving signal.

[0052] Some optional embodiments of the present application are introduced below.

[0053] In some optional embodiments, the BMS control module 50 is used to generate a corresponding relay control instruction according to actual system requirements and send it to the self-locking detection module 20. The relay control instruction is specifically used to instruct to open or close the relay 40.

[0054] Accordingly, after receiving the relay control instruction, the self-locking detection module 20 determines whether to output a valid or invalid drive signal to the relay, that is, determines whether to output a valid drive signal or an invalid drive signal to the relay drive module 30. Specifically, when the relay control instruction is used to instruct to disconnect the relay 40, a valid drive signal may be sent / output to the relay drive module 30; otherwise, an invalid drive signal may be sent to the relay drive module 30.

[0055] In some optional embodiments, after the relay 40 is disconnected, the car loses power. At this time, manual intervention is required to check the power supply circuit corresponding to the power supply parameter. After the fault is eliminated and the power supply parameter of the relay 40 is repaired. At this time, the parameter comparison module 10 can determine the magnitude relationship between the power supply parameter of the relay 40 and the parameter threshold. When the power supply parameter is greater than or equal to the parameter threshold, the parameter comparison module 10 can send an invalid locking signal to the self-locking detection module 20 (that is, the lock signal Lock_Signal is restored to be invalid) to invalidly lock the self-locking detection module 20.

[0056] The BMS control module 50 may send a corresponding unlocking control signal (Unlock_Signal) to the self-locking detection module 20. After receiving the unlocking control signal, the self-locking detection module 20 may perform unlocking control on the invalid lock of the self-locking detection module 20. Furthermore, the BMS control module may also send a relay control instruction (Control_Signal) to the self-locking detection module 20.

[0057] Accordingly, after receiving the relay control instruction, the self-locking detection module 20 sends a valid drive signal to the relay drive module 30 in response to the instruction (i.e., the relay drive signal Drive_Signal is valid). Accordingly, after receiving the valid drive signal, the relay drive module 30 can close or pull in the relay 40. Optionally, the present application can jump to the step in which the parameter comparison module 10 obtains the power supply parameters and parameter thresholds of the relay 40 until the BMS control module 50 outputs an invalid unlocking control signal, i.e., when the unlocking control signal fails, the cycle ends.

[0058] In some optional embodiments, the system may further include a locking switch 60 (MSD), which may be connected between the parameter comparison module 10 and the relay driving module 30 , which is not described in detail in this application.

[0059] A relay control system provided by an embodiment of the present application comprises a parameter comparison module, a self-locking detection module, a relay driving module and a relay connected in sequence, wherein: the parameter comparison module is used to obtain the power supply parameters and parameter thresholds of the relay, and sends a valid locking signal to the self-locking detection module when the power supply parameters are less than the parameter thresholds; the self-locking detection module is used to send an invalid driving signal to the relay driving module after receiving the valid locking signal; the relay driving module is used to disconnect the relay after receiving the invalid driving signal. In the above scheme, the present application conveniently and efficiently disconnects the relay according to the power supply parameters and parameter thresholds of the relay, so as to effectively prevent the problem of relay adhesion, and also solves the technical problem of relay adhesion caused by poor contact of the relay power supply circuit in the prior art.

[0060] Based on the same inventive concept, another embodiment of the present application provides a method and a terminal device corresponding to the relay control system described in the embodiment of the present application.

[0061] See also Figure 2 , is a flow chart of a relay control method provided in an embodiment of the present application. Figure 2 The method shown is applied to Figure 1 In the relay control system, the method comprises the following implementation steps:

[0062] S201, obtaining a power supply parameter and a parameter threshold of the relay through the parameter comparison module 10, and sending a valid locking signal to the self-locking detection module 20 when the power supply parameter is less than the parameter threshold;

[0063] S202, after receiving the valid locking signal, the self-locking detection module 20 sends an invalid driving signal to the relay driving module 30;

[0064] S203 , after receiving the invalid driving signal, the relay driving module 30 controls the relay 40 to be disconnected.

[0065] For the contents not introduced or described in the embodiments of the present application, please refer to the relevant introduction in the aforementioned method embodiments, which will not be repeated here.

[0066] Please also see Figure 3 , is a schematic diagram of the structure of a terminal device provided in an embodiment of the present application. Figure 3 The terminal device 300 shown may be, for example, a car, a bus or other device with communication functions. The terminal device 300 may include: at least one processor 301, a communication interface 302, a user interface 303 and a memory 304. The processor 301, the communication interface 302, the user interface 303 and the memory 304 may be connected via a bus or other means. The embodiment of the present invention takes the connection via a bus 305 as an example. Among them,

[0067] The processor 301 may be a general-purpose processor, such as a central processing unit (CPU).

[0068] The communication interface 302 may be a wired interface (eg, an Ethernet interface) or a wireless interface (eg, a cellular network interface or a wireless LAN interface) for communicating with other terminals or websites. In an embodiment of the present invention, the communication interface 302 is specifically used to obtain parameter information such as power supply voltage and voltage threshold.

[0069] The user interface 303 may be a touch panel, including a touch screen and a touch screen, for detecting operation instructions on the touch panel, a physical button or a mouse, or a display screen for outputting and displaying images or data.

[0070] The memory 304 may include a volatile memory, such as a random access memory (RAM); the memory may also include a non-volatile memory, such as a read-only memory (ROM), a flash memory, a hard disk drive (HDD) or a solid-state drive (SSD); the memory 304 may also include a combination of the above-mentioned types of memories. The memory 304 is used to store a set of program codes, and the processor 301 is used to call the program codes stored in the memory 304 to execute the relay control method as described above.

[0071] One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages: A relay control system provided in the embodiments of the present application comprises a parameter comparison module, a self-locking detection module, a relay driving module and a relay connected in sequence, wherein: the parameter comparison module is used to obtain the power supply parameters and parameter thresholds of the relay, and sends a valid locking signal to the self-locking detection module when the power supply parameters are less than the parameter threshold; the self-locking detection module is used to send an invalid driving signal to the relay driving module after receiving the valid locking signal; the relay driving module is used to disconnect the relay after receiving the invalid driving signal. In the above scheme, the present application conveniently and efficiently disconnects the relay according to the power supply parameters and parameter thresholds of the relay, so as to effectively prevent the problem of relay adhesion, and also solves the technical problem of relay adhesion caused by poor contact of the relay power supply circuit in the prior art.

[0072] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, systems, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Furthermore, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0073] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (systems), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0074] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0075] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0076] Although the preferred embodiments of the present invention have been described, those skilled in the art may make other changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0077] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A relay control system, characterized in that: It includes a parameter comparison module, a self-locking detection module, a relay driving module, a relay and a BMS control module connected to the self-locking detection module in sequence, wherein: The BMS control module is used to send a relay control instruction to the self-locking detection module, wherein the relay control instruction is used to instruct to open or close the relay; The parameter comparison module is used to obtain the power supply parameter and parameter threshold of the relay, and send a valid locking signal to the self-locking detection module when the power supply parameter is less than the parameter threshold; The self-locking detection module is used to lock or lock itself after receiving the effective locking signal, ignore the relay control instruction sent by the BMS control module, and directly send an invalid driving signal to the relay driving module; The relay driving module is used to control the relay to disconnect after receiving the invalid driving signal.

2. The system according to claim 1, characterized in that After the relay is disconnected and the power supply circuit of the relay is repaired, The parameter comparison module is further used to obtain the power supply parameter and parameter threshold of the relay, and when the power supply parameter is greater than or equal to the parameter threshold, send an invalid locking signal to the self-locking detection module to invalidly lock the self-locking detection module; The BMS control module is used to send an unlocking control signal to the self-locking detection module to perform unlocking control on the invalid lock of the self-locking detection module; and send a relay control instruction to the self-locking detection module; The self-locking detection module is further used to perform unlocking control after receiving the unlocking control signal, and send a valid driving signal to the relay driving module according to the received relay control instruction; The relay driving module is further used to control the closing of the relay after receiving the effective driving signal.

3. The system according to claim 2, characterized in that After the closing control, the step of obtaining the power supply parameter and parameter threshold of the relay is repeatedly performed until the BMS control module outputs the invalid unlocking control signal.

4. The system according to any one of claims 1 to 3, characterized in that: The parameter comparison module is further configured to repeat the step of obtaining the power supply parameter and the parameter threshold of the relay when the power supply parameter is greater than or equal to the parameter threshold.

5. The system according to claim 2, characterized in that The self-locking detection module is specifically used for: When the relay control instruction is used to instruct closing the relay, a valid driving signal is sent to the relay driving module.

6. The system according to claim 2, characterized in that The self-locking detection module is specifically used for: When the relay control instruction is used to instruct to disconnect the relay, an invalid drive signal is sent to the relay drive module.

7. The system according to any one of claims 1 to 3, characterized in that: The power supply parameters include power supply voltage and / or power supply current.

8. A relay control method, characterized in that: Applicable to the relay control system according to any one of claims 1 to 7, the relay control system comprises a parameter comparison module, a self-locking detection module, a relay driving module, a relay and a BMS control module connected to the self-locking detection module in sequence, wherein: Sending a relay control instruction to the self-locking detection module through the BMS control module, wherein the relay control instruction is used to instruct to open or close the relay; Acquiring a power supply parameter and a parameter threshold of the relay through the parameter comparison module, and sending a valid locking signal to the self-locking detection module when the power supply parameter is less than the parameter threshold; After receiving the valid locking signal, the self-locking detection module locks or locks itself, ignores the relay control instruction sent by the BMS control module, and sends an invalid drive signal to the relay drive module; After receiving the invalid driving signal, the relay driving module controls the relay to be disconnected.

9. A terminal device, characterized in that: The terminal device includes: a processor, a memory, a communication interface and a bus; the processor, the memory and the communication interface are connected through the bus and communicate with each other; the memory stores executable program code; the processor runs a program corresponding to the executable program code by reading the executable program code stored in the memory, so as to execute the relay control method as described in claim 8 above.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a program, and when the program is run on a terminal device, the relay control method as claimed in claim 8 is executed.

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