KR101937400B1 - Low power relay driving apparatus - Google Patents

Low power relay driving apparatus Download PDF

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Publication number
KR101937400B1
KR101937400B1 KR1020150089758A KR20150089758A KR101937400B1 KR 101937400 B1 KR101937400 B1 KR 101937400B1 KR 1020150089758 A KR1020150089758 A KR 1020150089758A KR 20150089758 A KR20150089758 A KR 20150089758A KR 101937400 B1 KR101937400 B1 KR 101937400B1
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KR
South Korea
Prior art keywords
relay
coil
signal
battery
turned
Prior art date
Application number
KR1020150089758A
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Korean (ko)
Other versions
KR20160140293A (en
Inventor
김용은
박현배
배재남
문희석
Original Assignee
자동차부품연구원
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Publication of KR20160140293A publication Critical patent/KR20160140293A/en
Application granted granted Critical
Publication of KR101937400B1 publication Critical patent/KR101937400B1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/22—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for supplying energising current for relay coil
    • H01H47/32—Energising current supplied by semiconductor device
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H47/00—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current
    • H01H47/02—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay
    • H01H47/12—Circuit arrangements not adapted to a particular application of the relay and designed to obtain desired operating characteristics or to provide energising current for modifying the operation of the relay for biasing the electromagnet
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/06—Electromagnets; Actuators including electromagnets
    • H01F7/08—Electromagnets; Actuators including electromagnets with armatures
    • H01F7/18—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings
    • H01F2007/1894—Circuit arrangements for obtaining desired operating characteristics, e.g. for slow operation, for sequential energisation of windings, for high-speed energisation of windings minimizing impact energy on closure of magnetic circuit

Abstract

The present technology discloses a low-power relay driving apparatus. According to a specific example of the present invention, in the switching mode in which the contact portion of the relay switch is connected to the contacted portion, a strong current is supplied to the relay coil using the first relay driving portion and the second relay driving portion, In the standby mode after the connection of the relay coil is completed, the current is supplied to the relay coil using the first relay driver, so that the consumed electric power of the relay can be fundamentally reduced. According to the comparison result between the potential difference of the relay coil and the predetermined reference potential, And the second relay driving unit, so that unnecessary power consumption in the standby mode can be reduced.

Description

[0001] LOW POWER RELAY DRIVING APPARATUS [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a low-power relay driving apparatus, and more particularly, to an apparatus that can reduce the power consumption of a relay of an electronic control system for a vehicle.

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As the automobile industry and electronic communication technologies have developed, a technique has been developed to add electronic devices to automobiles so that the mechanical movements of the automobiles can be controlled through electronic devices.
In recent years, technologies have been developed not only to control simple mechanical movement but also to improve the convenience of operation by controlling the overall operation of the vehicle and supplying auxiliary power to the vehicle in consideration of the driving characteristics of the driver. The electronic device is recognized as an essential component.

BACKGROUND ART [0002] Electronic apparatuses provided in automobiles are various types and applications, but electronic apparatuses typically mounted on recently-produced automobiles are typical electronic apparatuses.

Electronic control devices consist of various electronic devices, one of which is a relay. The relay functions to supply or cut off the power while the electronic control unit is in operation, to cut off the leakage current when it is not in operation, to protect the internal circuit of the electronic control unit by cutting off the power supply in case of failure And Korean Patent Laid-Open No. 10-2006-026627 discloses a conventional technique related thereto.

Korean Unexamined Patent Application Publication No. 10-2006-0026627 discloses that if a pulse signal is not applied to the driving switch 420 through the driving signal unit 430 in the electronic control unit, So that the spring force of the spring contacts causes the spring force to act in the opposite direction and the relay switch 210 is turned off to cut off the connection between the power source and the load.

As described above, when the relay switch 210 of the relay is turned on / off, a metal contact sound is generated. That is, when a magnetic force is generated in the exciting coil 220, when a spring force exceeding the magnetic force is applied, the contact terminal is pulled in. When the magnetic force is extinguished and the force of the spring is not exceeded, Off state, so that the metal contact sound is generated in accordance with the movement of the contact terminal.

In this case, since the control unit needs to provide a separate output port for transmitting the pulse signal to the drive switch 420, there is a problem that the manufacturing terminal is expensive. Further, in the case of a vehicle having a plurality of relays, .

Further, in the prior art, the amount of current flowing through the exciting coil is determined according to the magnitude of the excitation coil resistance. As the size of the relay increases, the power consumption increases. In the case of a vehicle having a plurality of relays, There was a problem that consumption occurred.

Accordingly, the present invention proposes a method for reducing the power consumption of a relay without using such a pulse signal.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to provide a low-power relay driving apparatus with a low manufacturing cost.

It is another object of the present invention to provide a low-power relay driving apparatus capable of reducing relay consumption power.

According to an aspect of the present invention, there is provided a low-

A relay provided with a relay coil and a relay switch; A control unit for generating a relay-on signal; And a first relay driver which is turned on by the relay-on signal to allow the output of the battery to pass through the relay coil.

Preferably, the present invention includes a first relay interrupter turned off by a relay-on signal in a switching mode; And a second relay driver which is turned on by the relay relay signal of the first relay intermittent portion and the output of the battery is passed through the relay coil. The first relay intermittent unit may be turned on by a relay-on signal in a standby mode to open the connection between the second relay driving unit and the battery, and the first relay intermittent unit may receive the relay-on signal to charge the charging device. And a second relay driving unit that is provided between the charging device and the second relay driving unit and is turned off by the charging power of the charging device in the switching mode to connect the second relay driving unit to the battery, And a first switching device for opening connection between the second relay driver and the battery.

Preferably, the present invention may further include a second relay interrupter for controlling the connection between the battery and the second relay driver according to a result of comparing the potential difference between the both ends of the relay coil and the predetermined reference potential. Wherein the second relay intermittent portion includes: a comparator for comparing a potential difference of the relay coil with a predetermined reference potential; And a second switching element provided between the charging element and the first switching element and controlling the connection between the charging element and the first switching element based on the comparison result of the comparator, If the difference between the both ends of the relay coil and the predetermined reference potential are different from each other, the connection between the charging element and the first switching element is opened to connect the battery and the second relay driver. The second switching device is turned off when the potential difference between both ends of the relay coil is equal to the predetermined reference potential as a result of the comparison of the comparator and the charging element and the first switching element are connected to each other so that the connection between the battery and the second relay driver So as to open.

According to the present invention, there is an advantage that a device for generating a pulse signal is eliminated, so that a low-power relay driving device is provided at a low manufacturing cost. In the switching mode for connecting the contact portion and the contacted portion of the relay switch, a strong current is supplied to the relay coil using the first relay driving portion and the second relay driving portion, and after the contact portion and the contacted portion of the relay switch are connected, The power consumption of the relay can be fundamentally reduced by providing a current to the relay coil using the first relay driver.

According to the present invention, unnecessary power consumption in the standby mode can be reduced by interrupting the connection between the battery and the second relay driver according to the comparison result between the potential difference of the relay coil and the predetermined reference potential.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description of the invention given below, serve to further understand the technical idea of the invention. And should not be construed as limiting.
1 is a view showing a conventional relay driving apparatus.
2 is a circuit diagram showing a configuration of a relay driving apparatus according to an embodiment of the present invention.
3 is a view showing a current flow in a switching mode of a low-power relay driving apparatus according to an embodiment of the present invention.
4 is a view showing a current flow in a standby mode of a low-power relay driving apparatus according to an embodiment of the present invention.

The specific structure or functional description presented in the embodiment of the present invention is merely illustrative for the purpose of illustrating an embodiment according to the concept of the present invention, and embodiments according to the concept of the present invention can be implemented in various forms. And should not be construed as limited to the embodiments described herein, but should be understood to include all modifications, equivalents, and alternatives falling within the spirit and scope of the invention.

Meanwhile, in the present invention, the terms first and / or second etc. may be used to describe various components, but the components are not limited to the terms. The terms may be referred to as a second element only for the purpose of distinguishing one element from another, for example, to the extent that it does not depart from the scope of the invention in accordance with the concept of the present invention, Similarly, the second component may also be referred to as the first component.

Whenever an element is referred to as being "connected" or "connected" to another element, it may be directly connected or connected to the other element, but it should be understood that other elements may be present in between something to do. On the other hand, when it is mentioned that an element is "directly connected" or "directly contacted" to another element, it should be understood that there are no other elements in between. Other expressions for describing the relationship between components, such as "between" and "between" or "adjacent to" and "directly adjacent to" should also be interpreted.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular expressions include plural expressions unless the context clearly dictates otherwise. It will be further understood that the terms " comprises ", or "having ", and the like in the specification are intended to specify the presence of stated features, integers, But do not preclude the presence or addition of steps, operations, elements, parts, or combinations thereof.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

2 is a diagram illustrating the configuration of a low-power relay driving apparatus according to an embodiment of the present invention.

Referring to FIG. 2, a low-power relay driving apparatus 1 according to an embodiment of the present invention includes a first relay driving unit and a second relay driving unit, And the relay coil is excited by a relay driving unit. The apparatus 1 includes a control unit 20 for generating a relay on signal for energizing the relay coil 11 and the relay coil 11, A first relay driving part 30 which is turned on in accordance with a relay-on signal of the control part 20 and the output of the battery is passed through a relay coil, a relay of the control part 20 transmitted via a first relay interrupting part 40, And a second relay driver (50) which is turned on in accordance with the ON signal and the output of the battery is passed through the relay coil.

Here, the switching mode is a mode in which the output to the battery is excited to the relay coil as it passes through the relay coil and the first relay driver 30 and the second relay driver 50, and the electromagnetic force Means a switching state in which the contact portion of the relay switch is connected to the contacted portion, and the standby mode means a state in which the contact portion and the contacted portion of the relay switch maintain the connection of the relay switch after completion of the connection.

That is, since the force pulling the contact portion and the contact portion of the relay switch is proportional to the square of the distance between the contact portion and the contacted portion, the current consumed by the relay coil is large in the switching mode.

However, in the standby mode, since the distance between the contact point and the contact point of the relay switch is close to zero, it is possible to maintain the connection state of the relay switch even when the current flowing through the relay coil is small.

Accordingly, the first relay driver 30 is provided as a switching element for switching to the on state according to the relay on signal of the controller 20, and is always kept in the on state according to the relay on signal, The connection of the first relay driver 30 is maintained. Thus, the output of the battery 11 passes through the switching element of the first relay driver 30 via the relay coil 12. Therefore, the current I1 flows through the relay coil 12, and the relay coil 12 is excited.

The relay intermittent part 40 includes a charging element 41 which is formed of a resistor R and a capacitor C and which charges the relay-on signal of the controller 20, a charging element 41, And a first switching device 42 provided between the first switch 40 and the second switch 40.

That is, when the charging voltage of the capacitor C is increased by the time constant of the resistor R and the capacitor C of the charging element 51 which receives the relay-on signal, but the predetermined voltage is not reached, The first switching device 42 is switched to the OFF state due to the charged voltage. Accordingly, the connection between the charging device 41 and the second relay driver 50 is released.

The second relay driver 50 is provided as a switching element for switching according to the relay-on signal of the controller 20 and is turned on by the relay-on signal as the connection with the first relay controller 40 is opened, And the output of the battery 11 is transmitted to the second relay driver 40 via the relay coil 12. The second relay driver 40 is connected to the second relay driver 50, That is, the battery 11 and the second relay driver 50 are connected to each other so that current flows through the relay coil 12 and the relay coil 12 is excited.

That is, since the relay coil 12 is excited by using the first relay driving unit 30 and the second relay driving unit 50 in the switching mode, a strong current I1 + I2 flows through the relay coil 12. The amount of current flowing through the relay coil 12 flows at the sum of the current amounts I1 and I2 of the first relay driving unit 30 and the second relay driving unit 50. [

On the other hand, when the charging voltage of the capacitor C is increased by the time constant of the resistor R and the capacitor C of the charging device 41 which receives the relay-on signal and reaches a predetermined predetermined voltage, The discharging electric power is transmitted to the first switching device 42 so that the first switching part 42 switches to the turn-on state.

Accordingly, since the relay-on signal of the control unit 20 supplied to the second relay driving unit 50 is transmitted to the first switching device 42, the second relay driving unit 50 is switched to the turn-off state. That is, the connection between the charging device 41 of the first relay intermittent unit 40 and the second relay driving unit 50 is opened, so that the connection between the battery 11 and the second relay driving unit 50 And is opened.

That is, in the standby mode, when the charging voltage of the charging device 41 reaches a predetermined voltage, the second relay driving unit 50 is switched to the turn-off state and the connection between the battery 11 and the second relay driving unit 50 So that the relay coil 12 is excited by the first relay driver 30. [ At this time, the current I1 flowing through the relay coil 12 is limited by the resistance R1 of the first relay driver 30.

In addition, the present invention may further include a second relay intermittent part 60 for controlling the connection between the battery and the second relay driving part according to a result of comparison between the potential difference at both ends of the relay coil and the predetermined reference potential.

The second relay intermittent portion 60 is switched according to the comparison result of the comparator 61 and the comparator 61 comparing the potential difference between the both ends of the relay coil 12 and the predetermined reference potential, And a second switching device 62 for interrupting the connection between the charging device 41 of the switching device 40 and the first switching device 42.

The output of the comparator 61 is transmitted to the second switching device 62 and the second switching device 62 is connected to the output terminal of the comparator 61 based on whether or not the potential difference between both ends of the relay coil 12 coincides with the predetermined reference potential. And switches according to the output of the comparator 61 so that the connection of the charging element 41 and the first switching element 42 is interrupted.

The connection between the battery 11 and the second relay driver 50 is controlled depending on whether the charging device 41 and the first switching device 42 are connected.

 For example, when the distance between the contact portion of the relay and the contacted portion becomes close to zero as the distance between the contact portion and the contacted portion of the relay switch becomes long, and the potential difference between the both ends of the relay coil becomes equal to the reference potential, The output of the comparator 61 is transferred to the second switching element 62 so that the second switching element 62 is turned on so that the charging element 41 and the charging element 41 are turned on, The connection of the first switching element 42 is opened.

Therefore, a strong current (I1 + I2) is applied to the relay coil 12 by using the first relay driving unit 30 and the second relay driving unit 50 connected between the battery 11 and the second relay driving unit 50 The contact portion and the contacted portion of the relay switch are connected again.

On the other hand, when the distance between the contact portion and the contacted portion of the relay switch is not shortened, the distance between the contact portion of the relay and the contacted portion approaches zero, and when the potential difference between both ends of the relay coil is equal to the reference potential, The output of the comparator 61 is transferred to the second switching element 62 and the second switching element 62 is turned off so that the charging element 41 and the charging element 41 are turned off, The first switching element 42 is connected.

Therefore, the connection between the battery 11 and the second relay driving part 50 is opened and the relay coil 12 is excited by using the first relay driving part 30. Thus, the contact part and the contacted part of the relay switch are connected Lt; / RTI >

Due to the electromotive force of the relay coil 12, the contact portion and the contact portion of the relay switch are maintained in the connected state in the standby mode.

3 is a view showing a current flow in a switching mode of a low-power relay driving apparatus according to an embodiment of the present invention. 3, the charging device 41 of the first relay interrupter 40 and the first switching device 42 of the first relay intermittent part 40 are controlled according to the comparison result of the comparator 61 of the second relay intermittent part 60 in the switching mode, The output of the battery passes through the relay coil 12 and passes through the second relay driving part 50 as the connection is opened and the second relay driving part 50 is turned on by the relay on signal of the control part 20. [

The relay coil 12 is excited by the strong current I1 + I2, and the contact portion and the contact portion of the relay switch are connected in the switching mode due to the electromotive force of the relay coil 12. [

4 is a view showing a current flow in a standby mode of a low-power relay driving apparatus according to an embodiment of the present invention. 4, in the standby mode, the charging device 41 and the first switching device (not shown) of the first relay interrupter 40 are controlled according to the comparison result of the comparator 61 of the second relay interrupter 60 The first switching device 42 is turned on by the discharge voltage of the charging device 41 and the second relay driving unit 50 is turned off accordingly.

That is, since the output of the battery 11 passes through the relay coil 12 and the first relay driver 30, the relay coil 12 is excited by the current I1. The contact portion and the contact portion of the relay switch are kept connected.

The present invention can realize a function of energizing the relay coil using a relay-on signal. A typical relay driver requires a device that generates a pulse width modulated signal.

According to the present invention, since the function of exciting the relay coil with the relay-on signal alone can be sufficiently performed, the apparatus for generating the expensive pulse-width modulation signal is replaced by the relay-on signal of the control unit alone. Device can be implemented.

In the switching mode for connecting the contact portion and the contacted portion of the relay switch, a strong current is supplied to the relay coil using the first relay driving portion and the second relay driving portion, and after the contact portion and the contacted portion of the relay switch are connected, A current is supplied to the relay coil using the first relay driving unit, so that the power consumption of the relay can be fundamentally reduced.

And a low-power relay driving apparatus capable of reducing unnecessary power consumption in the standby mode by interrupting the connection between the battery and the second relay driving unit in accordance with the comparison result of the potential difference of the relay coil and the predetermined reference potential.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. will be. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by all changes or modifications derived from the scope of the appended claims and equivalents of the following claims.

In the switching mode for connecting the contact portion and the contacted portion of the relay switch, a strong current is supplied to the relay coil by using the first relay driving portion and the second relay driving portion, and after the contact portion of the relay switch is connected to the contacted portion, 1 relay, it is possible to fundamentally reduce the power consumption of the relay by supplying current to the relay coil by using the relay driver, and the connection between the battery and the second relay driver according to the comparison result between the potential difference of the relay coil and the predetermined reference potential It is possible to make a great progress in terms of the operation accuracy and reliability of the low-power relay drive device which can reduce the unnecessary power consumption in the standby mode and further improve the performance efficiency, Is not only sufficient but also This is an invention that is likely to be used in industry.

Claims (8)

A relay provided with a relay coil and a relay switch;
A control unit for generating a relay-on signal; And
And a first relay driver which is switched to an on state by the relay-on signal and whose output is passed through a relay coil,
A first relay intermittent part turned off by the relay ON signal in a switching mode;
A second relay driver which is turned on by the relay on signal when the first relay intermittent part is turned off and the output of the battery is passed through the relay coil; And
Further comprising a second relay intermittent part for controlling connection between the battery and the second relay driving part according to a result of comparing the potential difference between the both ends of the relay coil and the predetermined reference potential,
The first relay intermittently-
A charging device for receiving and charging the relay-on signal; And
And a second relay driving unit that is provided between the charging device and the second relay driving unit and is turned off by the charging power of the charging device in the switching mode to connect the second relay driving unit to the battery, And a first switching element for opening the connection between the second relay driver and the battery,
And the second relay intermittently-
When the potential difference between the both ends of the relay coil is different from the reference potential as the distance between the contact portion and the contacted portion of the relay is not close to zero as the distance between the contact portion and the contacted portion of the relay is increased, And a second switching element that is turned on to open the connection between the charging element and the first switching element so that the current (I1 + I2) of the first relay driving part and the second relay driving part flows to the relay coil,
Wherein the second switching element comprises:
If the potential difference between the both ends of the relay coil is close to 0 as the distance between the contact part and the contacted part of the relay is not close to 0 as the distance between the contact part and the contacted part of the relay is not large, Is connected between the charging element and the first switching element so as to flow through the relay coil. delete 2. The apparatus according to claim 1, wherein the first relay intermittently-
And the second relay driving unit is turned on by the relay-on signal in a standby mode to open the connection between the second relay driving unit and the battery.


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KR1020150089758A 2015-05-27 2015-06-24 Low power relay driving apparatus KR101937400B1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102260391B1 (en) * 2020-06-30 2021-06-04 한국자동차연구원 Appatatus for controlling power of coil

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20200116764A (en) 2019-04-02 2020-10-13 삼성에스디아이 주식회사 Device for maintaining the operating state of a relay
CN110993441B (en) * 2020-01-06 2023-04-25 广东美的制冷设备有限公司 Control circuit, method, device, relay, home appliance and computer medium
KR102613496B1 (en) * 2021-06-29 2023-12-12 한화솔루션 주식회사 Apparatus for driving relay

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JP6031693B2 (en) * 2010-10-13 2016-11-24 フレゼニウス メディカル ケア ドイッチェランド ゲゼルシャフト ミット ベシュレンクテル ハフツング Phosphate binder formulation for easy administration

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JPS6031693Y2 (en) * 1980-12-22 1985-09-21 東京光学機械株式会社 surgical microscope
JPH10144195A (en) * 1996-11-05 1998-05-29 Harness Sogo Gijutsu Kenkyusho:Kk Relay drive circuit

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JP6031693B2 (en) * 2010-10-13 2016-11-24 フレゼニウス メディカル ケア ドイッチェランド ゲゼルシャフト ミット ベシュレンクテル ハフツング Phosphate binder formulation for easy administration

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102260391B1 (en) * 2020-06-30 2021-06-04 한국자동차연구원 Appatatus for controlling power of coil

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