CN113675816B - A control method, device and equipment for controlling a voltage transmission circuit - Google Patents

Abstract

The present application discloses a control method for controlling a voltage transmission circuit. The voltage transmission circuit includes a first voltage transmission line and a second voltage transmission line. The control method includes: acquiring the actual current of the first voltage transmission line; judging the second voltage transmission line Whether the actual current of a voltage transmission line is not less than the preset current threshold; according to the comparison result between the actual current of the first voltage transmission line and the preset current threshold, control the current of the first voltage transmission line and the second voltage transmission line on and off. By implementing the present application, the voltage transmission line can be effectively disconnected, and the safety of the voltage transmission control circuit can be improved.

Description

A control method, device and equipment for controlling a voltage transmission circuit

technical field

The present application relates to the field of circuit control, in particular to a control method, device and equipment for controlling a voltage transmission circuit.

Background technique

During the use of the circuit, it is necessary to make safety control over the voltage transmission, especially in the scene of high-voltage use. When the circuit is abnormal or faulty, the voltage transmission line needs to be disconnected to protect the voltage transmission line or perform circuit fault maintenance. However, the existing Technology cannot effectively and reliably disconnect the voltage transmission line, which brings great safety hazards.

Contents of the invention

Based on the problems described above, the present application provides a control method for controlling a voltage transmission circuit, which can effectively disconnect the voltage transmission line and improve the safety of the voltage transmission control circuit.

In one aspect, the present application provides a control method for controlling a voltage transmission circuit, the voltage transmission circuit includes a first voltage transmission line and a second voltage transmission line, and the control method includes:

acquiring the actual current of the first voltage transmission line;

judging whether the actual current of the first voltage transmission line is not less than a preset current threshold;

On-off of the first voltage transmission line and the second voltage transmission line is controlled according to a comparison result between the actual current of the first voltage transmission line and the preset current threshold.

In a possible implementation manner, the preset current threshold includes a first preset current threshold and a second preset current threshold, and the second preset current threshold is greater than the first preset current threshold;

Judging whether the actual current of the first voltage transmission line is not less than a preset current threshold includes:

judging whether the actual current of the first voltage transmission line is not less than the first preset current threshold but less than the second preset current threshold;

Judging whether the actual current of the first voltage transmission line is not less than the second preset current threshold.

Further, according to the comparison result between the actual current of the first voltage transmission line and the preset current threshold, controlling the on-off of the first voltage transmission line and the second voltage transmission line includes:

If the actual current of the first voltage transmission line is not less than the first preset current threshold but less than the second preset current threshold, first control the second voltage transmission line to disconnect, and then control the first voltage The transmission line is disconnected;

If the actual current of the first voltage transmission line is not less than the second preset current threshold, the first voltage transmission line is first fused and disconnected, and the second voltage transmission line is controlled to be disconnected.

In a possible embodiment, a first breaker and a second contactor are connected in series on the second voltage transmission line;

The controlling the on-off of the first voltage transmission line and the second voltage transmission line according to the comparison result between the actual current of the first voltage transmission line and the preset current threshold includes:

When the actual current of the first voltage transmission line is not less than the first preset current threshold but less than the second preset current threshold, firstly control the first breaker within a first preset time disconnected, the second voltage transmission line is disconnected; and then the first voltage transmission line is controlled to be disconnected.

Further, a first fuse and a first contactor are connected in series on the first voltage transmission line;

The controlling the on-off of the first voltage transmission line and the second voltage transmission line according to the comparison result between the actual current of the first voltage transmission line and the preset current threshold includes:

When the actual current of the first voltage transmission line is not less than the second preset current threshold, the first fuse is fused, and the first voltage transmission line is fused and disconnected; then the first disconnection is controlled The switch is disconnected, and the second voltage transmission line is disconnected.

Further, the controlling disconnection of the first voltage transmission line includes:

When the actual current of the first voltage transmission line is not less than the first preset current threshold but less than the second preset current threshold, the first contactor is controlled to be disconnected, and the first voltage Transmission line disconnected.

Optionally, the first preset current threshold is a smaller value between the first sticking current and the second sticking current, and the first sticking current is the second preset time after the first contactor lasts. A current for sticking, the second sticking current is a current for sticking after the second contactor lasts for the third preset time;

The first fuse is blown at the second preset current threshold.

In a possible embodiment, the voltage transmission circuit further includes a third voltage transmission line, the third voltage transmission line is connected in parallel with the first breaker, and the third voltage transmission line is used for The voltage is delivered with the breaker open.

In a possible implementation manner, the third voltage transmission line includes a second fuse, and the second fuse is configured to fuse when the first breaker is disconnected, and the third voltage transmission line is disconnected.

Optionally, the first voltage transmission line is a positive voltage transmission line;

The second voltage transmission line is a negative voltage transmission line.

On the one hand, the embodiment of the present application also provides a control device for controlling a voltage transmission circuit, the voltage transmission circuit includes a first voltage transmission line and a second voltage transmission line, and the control device includes:

An acquisition module, configured to acquire the actual current of the first voltage transmission line;

A judging module, configured to judge whether the actual current of the first voltage transmission line is not less than a preset current threshold;

A control module, configured to control the on-off of the first voltage transmission line and the second voltage transmission line according to the comparison result between the actual current of the first voltage transmission line and the preset current threshold.

On the one hand, the embodiment of the present application further provides a vehicle, the vehicle includes a control voltage transmission circuit and the above-mentioned control device.

On the one hand, the embodiment of the present application also provides an electronic device, the electronic device includes a controller and a memory, wherein the controller is used to execute the computer program stored in the memory, so as to realize the above aspects and any possible Example method steps.

On the one hand, the embodiment of the present application also provides a computer-readable storage medium, where instructions are stored in the readable storage medium, and when the readable storage medium is run on a computer, the computer executes the above-mentioned aspects and any possible implementation Example method steps.

In the embodiment of the present application, the controller obtains the actual current of the first voltage transmission line; judges whether the actual current of the first voltage transmission line is not less than the preset current threshold, and based on the actual current of the first voltage transmission line and the preset current threshold The result of the comparison is to control the on-off of the first voltage transmission line and the second voltage transmission line. By implementing the present application, the voltage transmission line can be effectively disconnected, and the safety of the voltage transmission control circuit can be improved.

Description of drawings

FIG. 1 is a schematic flowchart of a control method for controlling a voltage transmission circuit provided in an embodiment of the present application;

FIG. 2 is a control circuit diagram for a voltage transmission circuit provided in an embodiment of the present application;

FIG. 3 is a schematic flowchart of another control method for controlling a voltage transmission circuit provided by an embodiment of the present application;

FIG. 4 is a structural block diagram of a control device for controlling a voltage transmission circuit provided by an embodiment of the present application;

FIG. 5 is a structural block diagram of an electronic device provided by an embodiment of the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to 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 them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

The implementation of the technical solutions of the present application will be further described in detail below in conjunction with the accompanying drawings.

Referring to FIG. 1 , FIG. 1 is a schematic flowchart of a control method for controlling a voltage transmission circuit provided by an embodiment of the present application. As shown in Figure 1, it needs to be explained first that the voltage transmission circuit includes a first voltage transmission line and a second voltage transmission line, and the specific control steps are as follows:

S100. Acquire the actual current of the first voltage transmission line. In a possible implementation manner, the first voltage transmission line includes a current sensor, and the current sensor can collect the actual current on the first voltage transmission line in real time, and convert the actual current on the first voltage transmission line to The current is sent to the controller, so that the controller can receive the actual current of the first voltage transmission line in real time. In another possible implementation manner, a controller is provided in the voltage transmission circuit. The controller has a function of collecting current, and the controller can collect the actual current of the first voltage transmission line in real time.

S101. Determine whether the actual current of the first voltage transmission line is not less than a preset current threshold. Specifically, the preset current threshold includes a first preset current threshold and a second preset current threshold. The second preset current threshold is greater than the first preset current threshold. In some embodiments, a controller is used to determine whether the actual current of the first voltage transmission line is not less than the preset current threshold. The controller judges whether the actual current of the first voltage transmission line is not less than the first preset current threshold but less than the second preset current threshold, and the controller also judges whether the actual current of the first voltage transmission line Whether the actual current is not less than the second preset current threshold.

S102. According to the comparison result between the actual current of the first voltage transmission line and the preset current threshold, control the on-off of the first voltage transmission line and the second voltage transmission line. Specifically, in some embodiments, a controller is used to control on-off of the first voltage transmission line and the second voltage transmission line. If the actual current of the first voltage transmission line is not less than the first preset current threshold but less than the second preset current threshold, first control the second voltage transmission line to disconnect, and then control the first voltage The transmission line is disconnected; if the actual current of the first voltage transmission line is not less than the second preset current threshold, the first voltage transmission line is first fused and disconnected, and then the second voltage transmission line is controlled to be disconnected.

In the embodiment of the present application, the controller obtains the actual current of the first voltage transmission line; judges whether the actual current of the first voltage transmission line is not less than the preset current threshold, and based on the actual current of the first voltage transmission line and the preset current threshold The result of the comparison is to control the on-off of the first voltage transmission line and the second voltage transmission line. By implementing the present application, the first voltage transmission line and the second voltage transmission line included in the voltage transmission line can be effectively disconnected, thereby improving the safety of the voltage transmission control circuit. In a possible implementation manner, the voltage transmission line is arranged between the battery and the voltage transmission port, and disconnecting the first voltage transmission line and the second voltage transmission line can make the battery and the voltage transmission port disconnect.

The method for controlling a voltage transmission circuit is exemplarily described below in conjunction with a specific circuit diagram, as shown in FIG. 2 , which is a control circuit diagram for a voltage transmission circuit provided in an embodiment of the present application. As shown in FIG. 2 , the voltage transmission circuit includes a first voltage transmission line 201 and a second voltage transmission line 202 .

In a possible embodiment, the first breaker CK1 and the second contactor KM2 are connected in series on the second voltage transmission line 202; the actual current on the first voltage transmission line 201 is not less than the first preset current threshold, and is less than the second preset current threshold, the controller 203 first controls the first breaker CK1 to be disconnected within the first preset time, and the second voltage transmission line 202 is disconnected; Then control the first voltage transmission line 201 to disconnect. Specifically, a current sensor S1 is connected in series on the first voltage transmission line 201, and the current sensor S1 collects the actual current on the first voltage transmission line 201 in real time, and sends the actual current on the first voltage transmission line 201 to to the controller 203. The controller 203 compares the actual current on the first voltage transmission line 201 with the first preset current threshold and the second preset current threshold, and if the actual current on the first voltage transmission line 201 is not less than If the first preset current threshold is smaller than the second preset current threshold, the controller 203 first controls the first breaker CK1 to disconnect within the first preset time, and the second voltage transmission line 202 is disconnected, and then the first voltage transmission line 201 is controlled to disconnect. Further, a first fuse A1 and a first contactor KM1 are connected in series on the first voltage transmission line 201 . In a possible embodiment, when the actual current of the first voltage transmission line 201 is not less than the first preset current threshold but less than the second preset current threshold, the controller 203, The first contactor KM1 is controlled to be disconnected, and the first voltage transmission line 201 is disconnected. In another possible embodiment, when the actual current of the first voltage transmission line 201 is not less than the second preset current threshold, the first fuse A1 is blown, and the first voltage The transmission line 201 is fused and disconnected; the first breaker CK1 is controlled to be disconnected, and the second voltage transmission line 202 is disconnected. It can be understood that the first preset current threshold is a smaller value between the first sticking current and the second sticking current, and the first sticking current is that the first contactor KM1 continues to pass through the second preset The current of sticking occurs after a certain time, and the second sticking current is the current of sticking after the second contactor KM2 continues to pass through the third preset time; the first fuse is in the second preset current Fuse at the threshold.

Optionally, the first voltage transmission line is a positive voltage transmission line, and the second voltage transmission line is a negative voltage transmission line. The voltage transmission circuit is arranged between the battery and the voltage transmission port.

The control method applied to the circuit diagram in FIG. 2 will be described in detail below in conjunction with the accompanying drawings. Referring to FIG. 3 , FIG. 3 is a schematic flowchart of another control method for controlling a voltage transmission circuit provided by an embodiment of the present application. Combined with Figure 2 and Figure 3, the specific control steps are as follows:

S300. The controller 203 acquires the actual current of the first voltage transmission line 201. Specifically, the first voltage transmission line 201 includes a current sensor S1, the current sensor S1 can collect the actual current on the first voltage transmission line 201 in real time, and calculate the actual current on the first voltage transmission line 201 sent to the controller 203 so that the controller 203 can receive the actual current of the first voltage transmission line 201 in real time.

S301. The controller 203 judges whether the actual current of the first voltage transmission line 201 is not less than the first preset current threshold, and if the actual current of the first voltage transmission line 201 is not less than the first preset current threshold, the controller 203 executes Step S302b; otherwise, the controller 203 executes step S302a.

S302a, the controller 203 controls the first contactor KM1 and the second contactor KM2 to be disconnected. Specifically, when the actual current of the first voltage transmission line 201 is less than the first preset current threshold, the first contactor KM1 and the second contactor KM2 have no risk of adhesion, nor are they in an adhesion state, The on-off can be freely controlled by the controller 203 .

S302b. The controller 203 determines whether the actual current of the first voltage transmission line 201 is not less than the second preset current threshold. If yes, the controller 203 executes step S303b; otherwise, the controller 203 executes step S303a.

S303a. After the controller 203 controls the first breaker CK1 to be turned off within the first preset time, the first contactor KM1 is controlled to be turned off. Specifically, when the actual current of the first voltage transmission line 201 is not less than the first preset current threshold but less than the second preset current threshold, the first contactor KM1 and/or the second The second contactor KM2 has a risk of sticking, and the controller 203 controls the first contactor KM1 and/or the second contactor KM2 before the first preset time. The first breaker CK1 is disconnected, the voltage transmission circuit is disconnected, and the current of the voltage transmission circuit drops to zero. At this time, the first contactor KM1 and the second contactor KM2 are not stuck together, and the The controller 203 controls on-off, so the controller 203 controls the first breaker CK1 to be turned off within the first preset time, so as to ensure that the second voltage transmission line 202 is turned off, and then controls the first A contactor KM1 is disconnected to ensure that the first voltage transmission line 201 is disconnected. Further, the controller 203 may also control the second contactor KM2 to be disconnected to further ensure that the second voltage transmission line is disconnected.

S303b. After the first fuse is blown, the controller 203 controls the first breaker CK1 to turn off. Specifically, in the case that the actual current of the first voltage transmission line 201 is not less than the second preset current threshold, the first contactor KM1 and the second contactor KM2 can be quickly stuck, At this time, the first contactor KM1 and the second contactor KM2 are in a state of adhesion, and cannot be disconnected by the control of the controller 203 . When the actual current of the first voltage transmission line 201 is not less than the second preset current threshold, the first fuse A1 is fused, and the first voltage transmission line 201 is fused and disconnected; then the first disconnection is controlled CK1 is disconnected, and the second voltage transmission line 202 is disconnected. It should be noted that the first breaker CK1 does not have the contact structures of the first contactor KM1 and the second contactor KM2, so the first breaker CK1 is connected between the first contactor KM1 and the second contactor KM2. In the case of the second contactor KM2 being stuck, the phenomenon of sticking will not occur.

Implementing this embodiment can ensure that the first voltage transmission line and the second voltage transmission line can be disconnected under any circumstances, thereby improving the safety of the voltage transmission control circuit.

Referring again to FIG. 2 mentioned above, in order to protect the first breaker CK1, in a possible embodiment, the voltage transmission circuit further includes a third voltage transmission line 204, and the third voltage transmission line 204 is connected to the The first breaker CK1 is connected in parallel, and the third voltage transmission line 204 is used to transmit voltage when the first breaker CK1 is disconnected. Exemplarily, the third voltage transmission line 204 includes a second fuse A2, the second fuse A2 is used to fuse when the first breaker CK1 is disconnected, and the third voltage transmission line 204 is disconnected . Specifically, when the first breaker CK1 is disconnected, when the current of the second voltage transmission line 202 passes through the second fuse A2, the second fuse A2 is blown and disconnected, and the second fuse is blown. The fusing current of the device A2 is less than the first preset threshold current. The controller 203, when the current collected by the current sensor S1 on the first voltage transmission line 201 is not less than the first preset threshold current but less than the second preset threshold current, Assuming that the first breaker CK1 is controlled to be disconnected within a certain period of time, in order to prevent the current on the second voltage transmission line 202 from instantly impacting the first breaker CK1 and causing damage to the first breaker CK1, In this embodiment, a fuse is connected in parallel to the first breaker CK1, such as the second fuse A2. When the controller 203 controls the first breaker CK1 to be disconnected, the second voltage transmission line The current on 202 can flow to the third voltage transmission line 204, thereby achieving the effect of protecting the first breaker CK1. And because the fusing current of the second fuse A2 is less than the first preset threshold current, that is, the current on the first voltage transmission line 201 is not less than the first preset threshold current, but less than the first preset threshold current. When the threshold current is preset, after the controller 203 disconnects the first breaker CK1, the current on the second voltage transmission line 202 flows to the branch where the second fuse A2 is located. In this application Among them, the current passing through the first voltage transmission line 201 can be considered to be equal to the current passing through the second voltage transmission line 202 . The second fuse A2 is blown and disconnected. This embodiment ensures that the second voltage transmission line 202 is disconnected while protecting the first breaker CK1. Further, in order to prevent the second fuse A2 from being blown completely, the second voltage transmission line 202 is not disconnected. The third voltage transmission line is also connected in series with a second breaker CK2, wherein: after the second fuse A1 is connected in series with the second breaker CK2, it is connected in parallel with the first breaker CK1; the controller 203 After the first breaker CK1 is controlled to be turned off, the second breaker CK2 is controlled to be turned off. Implementing this embodiment, on the basis of protecting the disconnection of the first breaker, it is ensured that the branch connected in parallel with the first breaker is disconnected, so that the third voltage transmission line connected in parallel with the second voltage transmission line is disconnected .

Referring to FIG. 4 , FIG. 4 is a structural block diagram of a control device for controlling a voltage transmission circuit provided by an embodiment of the present application. Firstly, the voltage transmission circuit includes a first voltage transmission line and a second voltage transmission line. As shown in Figure 4, the control device 40 includes:

An acquisition module 400, configured to acquire the actual current of the first voltage transmission line;

A judging module 401, configured to judge whether the actual current of the first voltage transmission line is not less than a preset current threshold;

The control module 402 is configured to control the on-off of the first voltage transmission line and the second voltage transmission line according to the comparison result between the actual current of the first voltage transmission line and the preset current threshold.

In a possible implementation manner, the preset current threshold includes a first preset current threshold and a second preset current threshold, and the second preset current threshold is greater than the first preset current threshold;

The judging module 401 is further configured to judge whether the actual current of the first voltage transmission line is not less than the first preset current threshold but less than the second preset current threshold;

The judging module 401 is further configured to judge whether the actual current of the first voltage transmission line is not less than the second preset current threshold.

Further, the control module 402 is further configured to firstly control the current of the first voltage transmission line when the actual current of the first voltage transmission line is not less than the first preset current threshold but less than the second preset current threshold. The second voltage transmission line is disconnected, and then the first voltage transmission line is controlled to be disconnected;

The control module 402 is further configured to control the second voltage when the actual current of the first voltage transmission line is not less than the second preset current threshold and the first voltage transmission line is first fused and disconnected. Transmission line disconnected.

In a possible embodiment, a first breaker and a second contactor are connected in series on the second voltage transmission line;

The control module 402 is further configured to, when the actual current of the first voltage transmission line is not less than the first preset current threshold but less than the second preset current threshold, first preset The first breaker is controlled to be disconnected within a certain period of time, and the second voltage transmission line is disconnected; after that, the first voltage transmission line is controlled to be disconnected.

Further, a first fuse and a first contactor are connected in series on the first voltage transmission line;

The control module 402 is further configured to blow the first fuse and blow the first voltage transmission line when the actual current of the first voltage transmission line is not less than the second preset current threshold After that, the first breaker is controlled to be disconnected, and the second voltage transmission line is disconnected.

Furthermore, the control module 402 is further configured to control the actual current of the first voltage transmission line not less than the first preset current threshold but less than the second preset current threshold. The first contactor is disconnected, and the first voltage transmission line is disconnected.

Optionally, the first preset current threshold is a smaller value between the first sticking current and the second sticking current, and the first sticking current is the second preset time after the first contactor lasts. A current for sticking, the second sticking current is a current for sticking after the second contactor lasts for the third preset time;

The first fuse is blown at the second preset current threshold.

In a possible embodiment, the voltage transmission circuit further includes a third voltage transmission line, the third voltage transmission line is connected in parallel with the first breaker, and the third voltage transmission line is used in the second Transmission of voltage with the voltage transmission line disconnected;

In a possible implementation manner, the third voltage transmission line includes a second fuse, and the second fuse is configured to fuse when the first breaker is disconnected, and the third voltage transmission line is disconnected.

Optionally, the first voltage transmission line is a positive voltage transmission line;

The second voltage transmission line is a negative voltage transmission line.

Referring to FIG. 5 , FIG. 5 is a structural block diagram of an electronic device provided in an embodiment of the present application. As shown in FIG. 5, the electronic device 50 includes a controller 501 and a memory 502, wherein:

The controller 501 may be a central processing unit (central processing unit, CPU), and the processor may also be other general-purpose processors, digital signal processors (digital signal processor, DSP), application specific integrated circuits (application specific integrated circuits, ASIC), off-the-shelf programmable gate array (field-programmable gate array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

Instructions are stored in the memory 502 , and it can be understood that a preset current threshold is stored in the memory 502 . Exemplarily, the memory 502 may include a read-only memory and a random access memory, and provides instructions and data to the controller 501 . A portion of memory 502 may also include non-volatile random access memory. For example, memory 502 may also store device type information.

Optionally, the electronic device 50 may further include a transceiver 500, configured to receive current information sent by the current sensor, so that the controller 501 may further control the contactor and/or On and off of the breaker.

The controller 501 is configured to execute the computer program stored in the memory to implement any one of the possible embodiments described above.

In a specific implementation, the above-mentioned electronic device can execute the implementation methods provided by the steps in the above-mentioned Figures 1 to 3 through its built-in functional modules. For details, please refer to the implementation methods provided by the steps in the above-mentioned Figures 1 to 3. I won't repeat them here.

The present application provides a computer-readable storage medium, and instructions are stored in the readable storage medium, and when the readable storage medium is run on a computer, the computer is made to execute any one of the possible embodiments described above.

In a possible embodiment, the embodiment of the present application also provides a vehicle, the electronic equipment is placed in the vehicle, for example, the electronic equipment is placed in an electric vehicle, and the voltage transmission circuit is arranged between the power battery and the electric equipment between.

It should be noted that the above terms "first" and "second" are used for description purposes only, and should not be understood as indicating or implying relative importance.

In the several embodiments provided in this application, it should be understood that the disclosed methods, devices and systems can be implemented in other ways. The above-described embodiments are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods, such as: multiple units or components can be combined, or can be Integrate into another system, or some features may be ignored, or not implemented. In addition, the coupling, or direct coupling, or communication connection between the components shown or discussed may be through some interfaces, and the indirect coupling or communication connection of devices or units may be electrical, mechanical or other forms of.

The units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place or distributed to multiple network units; Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present invention can be integrated into one processing unit, or each unit can be used as a single unit, or two or more units can be integrated into one unit; the above-mentioned integration The unit can be realized in the form of hardware or in the form of hardware plus software functional unit.

Those of ordinary skill in the art can understand that all or part of the steps to realize the above method embodiments can be completed by hardware related to program instructions, and the aforementioned program can be stored in a computer-readable storage medium. When the program is executed, the Including the steps of the foregoing method embodiments; and the foregoing storage medium includes: a removable storage device, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, etc. A medium on which program code can be stored.

Alternatively, if the above-mentioned integrated units of the present invention are implemented in the form of software function modules and sold or used as independent products, they can also be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present invention is essentially or the part that contributes to the prior art can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for Make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the methods described in various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program codes such as removable storage devices, ROM, RAM, magnetic disks or optical disks.

The above is only a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Anyone skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present invention. Should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the protection scope of the claims.

Claims (9)

1. A control method for controlling a voltage transmission circuit, wherein the voltage transmission circuit includes a first voltage transmission line and a second voltage transmission line, and a first fuse and a first voltage transmission line are connected in series on the first voltage transmission line. A contactor, a first breaker and a second contactor are connected in series on the second voltage transmission line, and the control method includes: acquiring the actual current of the first voltage transmission line; If the actual current of the first voltage transmission line is not less than a first preset current threshold but less than a second preset current threshold, first control the second voltage transmission line to disconnect, and then control the first voltage transmission line to disconnect; Wherein, the second preset current threshold is greater than the first preset current threshold; If the actual current of the first voltage transmission line is not less than the second preset current threshold, the first fuse is blown, the first voltage transmission line is first fused and disconnected, and then the first breaker is controlled to be disconnected. open, the second voltage transmission line is disconnected; Wherein, the first preset current threshold value is a smaller value between the first sticking current and the second sticking current, and the first sticking current is the sticking of the first contactor after the second preset time. The current of the second sticking current is the current of sticking of the second contactor on the second voltage transmission line after the third preset time; the first fuse is at the second preset current threshold When blown. 2. The control method according to claim 1, wherein if the actual current of the first voltage transmission line is not less than the first preset current threshold but less than the second preset current threshold, firstly control the Disconnecting the second voltage transmission line, and then controlling the disconnection of the first voltage transmission line, includes: When the actual current of the first voltage transmission line is not less than the first preset current threshold but less than the second preset current threshold, firstly control the first breaker within a first preset time disconnected, the second voltage transmission line is disconnected; and then the first voltage transmission line is controlled to be disconnected. 3. The control method according to claim 1, wherein if the actual current of the first voltage transmission line is not less than the second preset current threshold, the first voltage transmission line is fused and disconnected first, After controlling the disconnection of the second voltage transmission line, comprising: When the actual current of the first voltage transmission line is not less than the second preset current threshold, the first fuse is fused, and the first voltage transmission line is fused and disconnected; controlling the second voltage transmission line The first breaker on is disconnected, and the second voltage transmission line is disconnected. 4. The control method according to claim 3, wherein the controlling the disconnection of the first voltage transmission line comprises: When the actual current of the first voltage transmission line is not less than the first preset current threshold but less than the second preset current threshold, the first contactor is controlled to be disconnected, and the first voltage Transmission line disconnected. 5. The control method according to claim 2, wherein the voltage transmission circuit further includes a third voltage transmission line, the third voltage transmission line is connected in parallel with the first breaker, and the third voltage transmission line for delivering voltage in case the first breaker is open. 6. The method according to claim 5, wherein the third voltage transmission line comprises a second fuse, the second fuse is used for blowing when the first breaker is disconnected, and the first The three-voltage transmission line is disconnected. 7. The control method according to claim 1, wherein the first voltage transmission line is a positive voltage transmission line; The second voltage transmission line is a negative voltage transmission line. 8. A control device for controlling a voltage transmission circuit, characterized in that the voltage transmission circuit includes a first voltage transmission line and a second voltage transmission line, and a first fuse and a first voltage transmission line are connected in series on the first voltage transmission line. A contactor, a first breaker and a second contactor are connected in series on the second voltage transmission line, and the control device includes: An acquisition module, configured to acquire the actual current of the first voltage transmission line; A control module, configured to control the disconnection of the second voltage transmission line before controlling the actual current of the first voltage transmission line to be disconnected when the actual current of the first voltage transmission line is not less than the first preset current threshold but less than the second preset current threshold. The first voltage transmission line is disconnected; wherein, the second preset current threshold is greater than the first preset current threshold; The control module is further configured to: when the actual current of the first voltage transmission line is not less than the second preset current threshold, the first fuse is blown so that the first voltage transmission line is first fused and disconnected Next, control the first breaker to disconnect, so that the second voltage transmission line is disconnected; Wherein, the first preset current threshold value is a smaller value between the first sticking current and the second sticking current, and the first sticking current is the sticking of the first contactor after the second preset time. The second sticking current is the current of sticking of the second contactor after a third preset time; the first fuse is blown at the second preset current threshold. 9. An electronic device, characterized in that the electronic device comprises a controller and a memory, wherein the controller is used to execute the computer program stored in the memory, to achieve the described in any one of claims 1 to 7. method steps.