KR102452538B1 - Method for controlling relay of vehicle - Google Patents

Abstract

When the relay control system of the vehicle according to an embodiment of the present invention is relayed off, the method for controlling the relay of the vehicle includes controlling the ground (ground) so that current does not flow from the power source, the first coil unit and the first switch in the power source After the contact of the first switch is turned off by the operation of the first relay and the contact of the first switch is turned off, the second coil unit and the second and turning off a contact of the second switch by the operation of the second relay without supplying current to the second relay including the switch.

Description

Method for controlling relay of vehicle

The present invention relates to a method for controlling a relay of a vehicle, and more particularly, to a technology for controlling a relay of a series structure.

A relay is an electronic component that opens and closes a circuit according to a control signal from a driving circuit, and is mainly used in the field of facility control. Here, since the relay is a mechanical switch, an additional circuit device is required to check whether the relay is faulty in a remote control device such as a computer. Accordingly, in a system that remotely controls a remote site, it is impossible to determine the correct state of the relay even when the relay switch is turned on. In addition, if a latching type relay controlled by a pulse signal is used, it is more difficult to check the current state from a remote location.

There is a method of checking the operation of a relay by detecting a voltage difference when a contact is on/off, which is used simply to check whether or not a relay is operating. It connects the voltage measuring means to the relay in parallel and measures the voltage across the relay to determine the relay operation state.

As such, the vehicle relay has a high usability, and thus the field and quantity of use is gradually increasing. Accordingly, in order to increase the reliability of the applied device, an additional stabilizing device against an error of the relay is essential.

In particular, the problem caused by carbonization of the contact point of the relay of the vehicle causes an unstable phenomenon during the operation of the relay of the vehicle, and there is a problem of continuously causing damage to the contact point of the relay.

[Patent Literature] Korean Patent No. 10-1532885.

The present invention uses the time difference between the off (open) time between the first relay and the second relay to discharge the electromotive force of the load when the first relay is turned off and generate an arc at the contact point of the first relay in the middle of the second relay To provide a relay control method of a vehicle that minimizes the arc holding time by discharging the electromotive force of the remaining load by turning off the device.

Other objects and advantages of the present invention may be understood by the following description, and will become more clearly understood by the examples of the present invention. It will be readily apparent that the objects and advantages of the present invention may be realized by the means and combinations thereof indicated in the claims.

When the relay control system of the vehicle according to an embodiment of the present invention is relayed off, the relay control method of the vehicle includes the steps of controlling the current not to flow from the power supply to the first coil unit, the current is not supplied from the power supply to the first coil unit. , the step of turning off the contact point of the first switch, and the step of turning off the contact point of the second switch because no current is supplied to the second coil unit connected to the ground (ground) after the contact point of the first switch is turned off do.

In addition, when the relay control system of the vehicle is relayed on, controlling the current to flow from the power source to the first coil unit, current is supplied from the power source to the first coil unit, and the contact of the first switch is turned on and after the contact of the first switch is turned on, a current is supplied to the second coil unit, and the contact of the second switch is turned on.

In addition, the relay control method of the vehicle when the relay control system of the vehicle according to another embodiment of the present invention is relayed off includes the steps of controlling the current to not flow from the power supply to the first coil and the second coil, and from the power supply to the second coil. After the contact of the first switch is turned off because no current is supplied to the first coil unit, and after the contact of the first switch is turned off, the current is not supplied from the power supply to the second coil unit, so that the contact of the second switch is including the step of being turned off.

In addition, the inductance values of the first coil unit and the second coil unit may be adjusted, so that the time points at which the contact point of the first switch and the contact point of the second switch are turned off may vary by magnetic flux.

In addition, when the relay control system of the vehicle is relayed on, controlling the current to flow from the power source to the first coil unit and the second coil unit, the current is supplied from the power source to the first coil unit, the first It may include the step of turning on the contact point of the switch, and after the contact point of the first switch is turned on, a current is supplied to the second coil unit, and the step of turning on the contact point of the second switch.

In addition, the inductance values of the first coil unit and the second coil unit are adjusted, so that the ON timing of the contact point of the first switch and the contact point of the second switch may be changed by magnetic flux.

In this technology, by sequentially turning off a plurality of relays, it is possible to prevent arcing by securing greater air resistance (additionally securing the contact gaps of a plurality of relays) to the arc generated when current is passed through the air.

1 is a view for explaining a method of controlling a relay of a vehicle when a relay control system of a vehicle according to an embodiment of the present invention is relayed on.
FIG. 2 is a view for explaining a method of controlling a relay of a vehicle when a relay control system of a vehicle according to an embodiment of the present invention turns off the relay.
3 is a view for explaining a method of controlling a relay of a vehicle when a relay control system of a vehicle according to another embodiment of the present invention is relay-on.
4 is a view for explaining a method of controlling a relay of a vehicle when a relay control system of a vehicle according to another embodiment of the present invention turns off the relay.
5 is a graph illustrating a change in voltage according to a method for controlling a relay of a vehicle according to an embodiment of the present invention.
6 is a graph illustrating a change in current in a method for controlling a relay of a vehicle according to an embodiment of the present invention.
7 is a block diagram illustrating a computing system for executing a vehicle relay control method according to an embodiment of the present invention.

Advantages and features of the present invention, and a method of achieving the same, will be described through the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments described herein and may be embodied in other forms. However, the present embodiments are provided to explain in detail enough to be able to easily implement the technical idea of the present invention to those of ordinary skill in the art to which the present invention pertains.

In the drawings, embodiments of the present invention are not limited to the specific form shown and are exaggerated for clarity. Although specific terms have been used herein. This is used for the purpose of describing the present invention, and is not used to limit the meaning or the scope of the present invention described in the claims.

In the present specification, the expression 'and/or' is used to mean including at least one of the elements listed before and after. In addition, the expression 'connected/coupled' is used in a sense including being directly connected to another element or indirectly connected through another element. As used herein, the singular also includes the plural, unless the phrase specifically states otherwise. Also, as used herein, a component, step, operation, and element referred to as 'comprises' or 'comprising' refers to the presence or addition of one or more other components, steps, operations and elements.

Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.

The relay control system of the vehicle includes a power supply unit, a control unit, a first relay and a second relay, and an electric load.

Specifically, the power supply unit supplies a current, and the control unit controls the power supply unit and a circuit connected to the power supply unit so that a current flows from the power supply unit to the first coil unit.

The first relay is provided with a first switch and a first coil unit, and when current is applied from the power supply unit, it controls to supply current to the electric load or to cut off the supply.

In addition, the second relay is provided with the second switch and the first coil unit, and when current is applied from the power supply unit, it controls to supply current to the load (electrical load) or to cut off the supply.

1 is a view for explaining a method of controlling a relay of a vehicle when a relay control system of a vehicle according to an embodiment of the present invention is relayed on.

Referring to FIGS. 1A and 1B , the control unit 100 of the relay control system of the vehicle controls the current to flow from the power supply unit 200 to the first coil unit 1 .

Next, the power supply unit 200 supplies current to the first relay 300 including the first coil unit 1 and the first switch 2 .

Next, in the first relay 300 , the contact of the first switch 2 is turned on by the operation of the first coil unit 1 and the first switch 2 .

Next, after the contact of the first switch 2 is turned on, current is supplied to the second relay 400 including the second coil unit 3 and the second switch 4 .

Next, in the second relay 400 , the contact of the second switch 4 is turned on by the operation of the second coil unit 3 and the second switch 4 .

FIG. 2 is a view for explaining a method of controlling a relay of a vehicle when a relay control system of a vehicle according to an embodiment of the present invention turns off the relay.

Referring to FIGS. 2A and 2B , the control unit 100 of the relay control system of the vehicle controls so that current does not flow from the power supply unit 200 to the first coil unit 1 .

Next, the power supply unit 200 does not supply current to the first relay 300 including the first coil unit 1 and the first switch 2 .

Next, in the first relay 300 , the contact of the first switch 2 is turned off by the operation of the first coil unit 1 and the first switch 2 .

Next, after the contact of the first switch 2 is turned off, the current is not supplied to the second relay 400 including the second coil unit 3 and the second switch 4 .

Next, in the second relay 400 , the contact of the second switch 4 is turned off by the operation of the second coil unit 3 and the second switch 4 .

3 is a view for explaining a method of controlling a relay of a vehicle when a relay control system of a vehicle according to another embodiment of the present invention is relay-on.

Referring to FIGS. 3A and 3B , the control unit 100 of the relay control system of the vehicle allows current to flow from the power supply unit 200 to the first coil unit 10 and the second coil unit 20 . control

Then, in the power supply unit 200 , the first relay 300 including the first coil unit 10 , the second coil unit 20 , and the first switch 30 , and the second coil unit 20 and the second switch A current is supplied to the second relay 400 including (40).

Next, in the first relay 300 , the contact of the first switch 30 is turned on by the operation of the first coil unit 10 and the first switch 30 .

Here, the inductance values of the first coil unit 10 and the second coil unit 20 are adjusted, so that the ON timing of the contact point of the first switch 30 and the contact point of the second switch 40 may vary due to magnetic flux. have.

Next, in the second relay 400 , the contact of the second switch 40 is turned on by the operation of the second coil unit 20 and the second switch 40 .

delete

4 is a view for explaining a method of controlling a relay of a vehicle when a relay control system of a vehicle according to another embodiment of the present invention turns off the relay.

Referring to FIGS. 4A and 4B , the control unit 100 of the relay control system of the vehicle prevents current from flowing from the power supply unit 200 to the first coil unit 10 and the second coil unit 20 . control

Then, in the power supply unit 200 , the first relay 300 including the first coil unit 10 and the first switch 30 and the second relay 300 including the second coil unit 20 and the second switch 40 are included. No current is supplied to the relay 400 .

Next, in the first relay 300 , the contact of the first switch 30 is turned off by the operation of the first coil unit 10 and the first switch 30 .

Here, the inductance values of the first coil unit 10 and the second coil unit 20 are adjusted so that the time points at which the contact points of the first switch 30 and the contact points of the second switch 40 are turned off may vary by magnetic flux. have.

Next, in the second relay 400 , the contact of the second switch 40 is turned off by the operation of the second coil unit 20 and the second switch 40 .

delete

5 is a graph illustrating a change in voltage according to a method for controlling a relay of a vehicle according to an embodiment of the present invention.

Referring to FIG. 5 , changes in each voltage and current according to time in a vehicle relay control method of a vehicle relay control system will be described.

The output voltage 101 of the control unit, the voltage 103 of the first coil unit, the output voltage 105 of the first switch, the voltage 107 of the second coil unit, the output voltage 109 of the second switch and the relay energization The current 111 (current through the first and second relays) is being started.

That is, an arc is generated when the relay is turned off according to the relay control method of the vehicle, and a process (A) in which the energized current of the first relay and the second relay is rapidly reduced during the time the generated arc is maintained is started.

6 is a graph illustrating a change in current in a method for controlling a relay of a vehicle according to an embodiment of the present invention.

Referring to FIG. 6 , the contact point of the first switch of the first relay during a process in which the energized current of the first relay and the second relay is rapidly reduced at a time when an arc is generated and maintained when the relay is turned off according to the relay control method of the vehicle. When the arc is generated and maintained at the time of OFF (B), the amount of current decrease and the process of changing the amount of current decrease when the contact of the second switch of the second relay is OFF (C) is changed so that the arc does not occur or the decrease amount of the current is constant.

7 is a block diagram illustrating a computing system for executing a vehicle relay control method according to an embodiment of the present invention.

Referring to FIG. 7 , the computing system 1000 includes at least one processor 1100 , a memory 1300 , a user interface input device 1400 , a user interface output device 1500 , and storage connected through a bus 1200 . 1600 , and a network interface 1700 .

The processor 1100 may be a central processing unit (CPU) or a semiconductor device that processes instructions stored in the memory 1300 and/or the storage 1600 . The memory 1300 and the storage 1600 may include various types of volatile or nonvolatile storage media. For example, the memory 1300 may include read only memory (ROM) and random access memory (RAM).

Accordingly, the steps of a method or algorithm described in connection with the embodiments disclosed herein may be directly implemented in hardware, a software module executed by the processor 1100 , or a combination of the two. A software module resides in a storage medium (ie, memory 1300 and/or storage 1600 ) such as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM. You may. An exemplary storage medium is coupled to the processor 1100 , the processor 1100 capable of reading information from, and writing information to, the storage medium. Alternatively, the storage medium may be integrated with the processor 1100 . The processor and storage medium may reside within an application specific integrated circuit (ASIC). The ASIC may reside within the user terminal. Alternatively, the processor and storage medium may reside as separate components within the user terminal.

In this technology, by sequentially turning off a plurality of relays, it is possible to prevent arcing by securing greater air resistance (additionally securing the contact gaps of a plurality of relays) to the arc generated when current is passed through the air.

Meanwhile, the method of the present invention as described above can be written in a computer program. In addition, codes and code segments constituting the program can be easily inferred by a computer programmer in the art. In addition, the written program is stored in a computer-readable recording medium (information storage medium), read and executed by the computer, thereby implementing the method of the present invention. And the recording medium includes all types of computer-readable recording media.

As mentioned above, although the present invention has been described with limited configuration and drawings, the technical spirit of the present invention is not limited thereto, and by those of ordinary skill in the art to which the present invention pertains, the technical spirit of the present invention and the following Various modifications and variations will be possible within the scope of equivalents of the claims to be described.

100: control unit 200: power unit
300: first relay 400: second relay
500: load

Claims (6)

In the relay control method of the vehicle when the relay control system of the vehicle is relayed off,
controlling the current not to flow from the power supply to the first coil;
a step in which current is not supplied from the power supply to the first coil unit, so that the contact of the first switch is turned off; and
After the contact of the first switch is turned off, the current is not supplied to the second coil unit connected to the ground (ground), so that the contact of the second switch is turned off
A vehicle relay control method comprising a. The method according to claim 1,
When the relay control system of the vehicle is relayed on,
controlling a current to flow from the power supply unit to the first coil unit;
a step in which current is supplied from the power source to a first coil, and a contact point of the first switch is turned on; and
and after the contact of the first switch is turned on, current is supplied to the second coil unit, and the contact of the second switch is turned on. In the relay control method of the vehicle when the relay control system of the vehicle is relayed off,
controlling the current to not flow from the power supply to the first and second coils;
a step in which current is not supplied from the power supply to the first coil, so that the contact of the first switch is turned off; and
After the contact of the first switch is turned off, the current is not supplied from the power supply to the second coil unit, so the contact of the second switch is turned off
A vehicle relay control method comprising a. 4. The method of claim 3,
The relay control method of a vehicle, characterized in that the inductance values of the first coil unit and the second coil unit are adjusted so that the time when the contact point of the first switch and the contact point of the second switch are turned off varies by magnetic flux. 4. The method of claim 3,
When the relay control system of the vehicle is relayed on,
controlling the current to flow from the power supply unit to the first coil unit and the second coil unit;
a step in which a current is supplied from the power supply unit to the first coil unit, and a contact point of the first switch is turned on; and
and after the contact of the first switch is turned on, current is supplied to the second coil unit, and the contact of the second switch is turned on. 6. The method of claim 5,
The inductance value of the first coil part and the second coil part is adjusted so that the on point of the contact point of the contact point of the first switch and the second switch is changed by magnetic flux.

Images