KR100747267B1 - Method for reducing noise of high voltage power relay - Google Patents

Method for reducing noise of high voltage power relay Download PDF

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KR100747267B1
KR100747267B1 KR1020050122036A KR20050122036A KR100747267B1 KR 100747267 B1 KR100747267 B1 KR 100747267B1 KR 1020050122036 A KR1020050122036 A KR 1020050122036A KR 20050122036 A KR20050122036 A KR 20050122036A KR 100747267 B1 KR100747267 B1 KR 100747267B1
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South Korea
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high voltage
relay
duty
pwm signal
turned
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KR1020050122036A
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Korean (ko)
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KR20070062236A (en
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윤길영
박선순
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현대자동차주식회사
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0092—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption with use of redundant elements for safety purposes
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K7/00—Modulating pulses with a continuously-variable modulating signal
    • H03K7/08—Duration or width modulation ; Duty cycle modulation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L2270/00—Problem solutions or means not otherwise provided for
    • B60L2270/10—Emission reduction
    • B60L2270/14—Emission reduction of noise
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
    • B60Y2306/00—Other features of vehicle sub-units
    • B60Y2306/09—Reducing noise
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Abstract

본 발명은, 고전압 파워 릴레이 소음 저감방법에 관한 것으로, 고전압 릴레이를 온시키는 경우, 모터 제어기에 포함된 고전압 릴레이 단자에 인가되는 PWM 신호의 듀티를 m % 씩 순차적으로 증가시키는 1단계와, 상기 PWM 신호에 의해 공급 전압이, 사전에 설정된 문턱 전압을 초과하면, PWM 신호의 듀티를 n %(n < m) 씩 순차적으로 증가시키면서, 상기 고전압 릴레이가 온되는 지를 판별하는 2단계와, 상기 고전압 렐레이가 온되면, 상기 PWM 신호의 듀티를 m% 씩 순차적으로 증가시키면서, 듀티가 100%가 될 때까지 PWM 신호의 듀티를 증가시키는 3단계를 포함하여 이루어지는 것을 특징으로 한다. 그리고, 본 발명의 실시예에 따르면, 하이브리드 전기 자동차에 탑재되는 고전압 릴레이를, 펄스폭변조(PWM) 제어신호를 이용하여, 최소한의 Force로 온/오프시킴으로써, 상기 고전압 릴레이의 온/오프시 발생되는 소음을 최소화시킬 수 있게 되어, 차량의 상품성을 크게 향상시킬 수 있게 된다. The present invention relates to a method for reducing noise of a high voltage power relay, wherein the step of sequentially increasing the duty of the PWM signal applied to the high voltage relay terminal included in the motor controller by m% when the high voltage relay is turned on, and the PWM A second step of determining whether the high voltage relay is turned on by sequentially increasing the duty of the PWM signal by n% (n < m) when the supply voltage exceeds the preset threshold voltage by the signal; When the ray is turned on, the duty cycle of the PWM signal is sequentially increased by m%, and the duty cycle of the PWM signal is increased until the duty reaches 100%. According to an embodiment of the present invention, the high voltage relay mounted in the hybrid electric vehicle is turned on / off with a minimum force by using a pulse width modulation (PWM) control signal, thereby generating the on / off state of the high voltage relay. It is possible to minimize the noise that is, it is possible to greatly improve the commerciality of the vehicle.

고전압 릴레이, 모터 제어기, 고전압 렐레이 제어단자, PWM 신호, 소음 저감 High Voltage Relay, Motor Controller, High Voltage Relay Control Terminal, PWM Signal, Noise Reduction

Description

고전압 파워 릴레이 소음 저감 방법 {Method for reducing noise of high voltage power relay} Method for reducing noise of high voltage power relay

도 1은 종래의 고전압 파워 릴레이 제어장치에 대한 구성을 나타낸 도면, 1 is a view showing a configuration for a conventional high voltage power relay control device,

도 2는 본 발명에 적용되는 고전압 파워 릴레이 제어장치에 대한 구성을 나타낸 도면,2 is a view showing a configuration for a high voltage power relay control device applied to the present invention,

도 3은 고전압 파워 릴레이 온시의 공급 전압에 대한 그래프를 나타낸 도면,3 is a graph showing a supply voltage at the time of high voltage power relay on;

도 4는 본 발명에 따른 고전압 파워 릴레이 온시의 소음 저감 방법에 대한 동작 흐름도를 나타낸 도면,4 is a flowchart illustrating an operation of a noise reduction method when a high voltage power relay is turned on according to the present invention;

도 5는 고전압 파워 릴레이 오프시의 공급 전압에 대한 그래프를 나타낸 도면,5 is a graph showing a supply voltage when the high voltage power relay is turned off;

도 6은 본 발명에 따른 고전압 파워 릴레이 오프시의 소음 저감 방법에 대한 동작 흐름도를 나타낸 도면이다. 6 is a flowchart illustrating an operation of a noise reduction method when the high voltage power relay is turned off according to the present invention.

<도면의 주요부분에 대한 부호의 설명><Description of the symbols for the main parts of the drawings>

10 : 고전압 배터리 20 : 고전압 릴레이
30,40 : 모터 제어기 300,400 : 고전압 릴레이 제어단자10: high voltage battery 20: high voltage relay
30,40: Motor controller 300,400: High voltage relay control terminal

삭제delete

본 발명은, 고전압 파워 릴레이 소음 저감 방법에 관한 것으로, 보다 상세하게는, 고전압 단락에 대한 안전을 위해 고전압 배터리와 모터 제어기 사이에 필수적으로 장착되는 고전압 파워 릴레이의 소음을 최소화시킬 수 있도록 하기 위한 고전압 파워 릴레이 소음 저감 방법에 관한 것이다. The present invention relates to a method for reducing noise of a high voltage power relay, and more particularly, a high voltage for minimizing noise of a high voltage power relay which is essentially installed between a high voltage battery and a motor controller for safety against a high voltage short circuit. The present invention relates to a power relay noise reduction method.

통상적으로 하이브리드 전기 자동차에 탑재되어 있는 고전압 릴레이(Relay)는, 도 1에 나타낸 바와 같이, 고전압 배터리(10)와 모터 제어기(30)가 사이에 필수적으로 장착되며, 상기 고전압 릴레이(20)는, 고전압 단락(Short) 발생시, 안전을 유지하기 위한 안전 장치로 사용된다. Typically, a high voltage relay (Relay) mounted on a hybrid electric vehicle, as shown in Figure 1, is essentially mounted between the high voltage battery 10 and the motor controller 30, the high voltage relay 20, It is used as a safety device to maintain safety in case of high voltage short circuit.

그리고, 상기 고전압 릴레이(20)는, 차량 주행시, 즉 키 온/오프(Key On/Off)시에 각각 한번씩 온/오프되는 데, 종래 기술에서는, 도 1에 나타낸 바와 같이, 상기 모터 제어기(30)에 포함된 고전압 릴레이 단자(300)에 온/오프(On/Off) 제어신호를 인가됨으로써, 상기 고전압 릴레이(20)가 순간적으로 온/오프된다.In addition, the high voltage relay 20 is turned on and off once each time the vehicle is driven, that is, when the key is on and off. In the related art, as shown in FIG. 1, the motor controller 30 is shown. By applying an on / off control signal to the high voltage relay terminal 300 included in the), the high voltage relay 20 is turned on / off momentarily.

그러나, 상기와 같이 고전압 렐레이(20)가 순간적으로 온/오프되는 경우, 상당히 큰 소음이 발생하게 되는 데, 특히 고전압 릴레이가 온/오프되면, 상기 고전압 배터리(10)가 장착된 위치의 후방에서 '딱'하는 소음이 크게 발생하게 되므로, 차량의 상품성을 크게 저하시키게 되는 문제점이 있다. However, when the high voltage relay 20 is momentarily turned on / off as described above, a considerably loud noise is generated. In particular, when the high voltage relay is turned on / off, the rear of the position where the high voltage battery 10 is mounted Since the 'squeak' noise is greatly generated, there is a problem that greatly lowers the commerciality of the vehicle.

따라서, 본 발명은 상기와 같은 문제점을 해결하기 위하여 창작된 것으로서, 하이브리드 전기 자동차에 탑재되는 고전압 릴레이를, 펄스폭변조(PWM) 제어신호를 이용하여 온/오프시킴으로써, 상기 고전압 릴레이의 온/오프시 발생되는 소음을 최소화시킬 수 있도록 하기 위한 고전압 파워 릴레이 소음 저감방법을 제공하는 데, 그 목적이 있는 것이다. Therefore, the present invention was created to solve the above problems, by turning on / off the high voltage relay mounted on the hybrid electric vehicle by using a pulse width modulation (PWM) control signal, thereby turning on / off the high voltage relay. It is an object of the present invention to provide a high voltage power relay noise reduction method for minimizing the noise generated during operation.

상기한 목적을 달성하기 위한 본 발명에 따른 고전압 파워 릴레이 소음 저감방법은, 고전압 릴레이를 온시키는 경우, 모터 제어기에 포함된 고전압 릴레이 단자에 인가되는 PWM 신호의 듀티를 m % 씩 순차적으로 증가시키는 1단계와, 상기 PWM 신호에 의해 공급 전압이, 사전에 설정된 문턱 전압을 초과하면, PWM 신호의 듀티를 n %(n < m) 씩 순차적으로 증가시키면서, 상기 고전압 릴레이가 온되는 지를 판별하는 2단계와, 상기 고전압 렐레이가 온되면, 상기 PWM 신호의 듀티를 m% 씩 순차적으로 증가시키면서, 듀티가 100%가 될 때까지 PWM 신호의 듀티를 증가시키는 3단계를 포함하여 이루어지는 것을 특징으로 하며,The high voltage power relay noise reduction method according to the present invention for achieving the above object, when the high voltage relay is turned on, sequentially increasing the duty of the PWM signal applied to the high voltage relay terminal included in the motor controller by m%. And determining whether the high voltage relay is turned on by sequentially increasing the duty of the PWM signal by n% (n <m) when the supply voltage exceeds the preset threshold voltage by the PWM signal. And, when the high voltage relay is turned on, increasing the duty of the PWM signal by m% sequentially and increasing the duty of the PWM signal until the duty reaches 100%.

또한, 본 발명에 따른 고전압 파워 릴레이 소음 저감방법은, 고전압 릴레이를 오프시키는 경우, 모터 제어기에 포함된 고전압 릴레이 단자에 인가되는 PWM 신호의 듀티를 m % 씩 순차적으로 감소시키는 1단계와, 상기 PWM 신호에 의해 공급 전압이, 사전에 설정된 문턱 전압 이하가 되면, PWM 신호의 듀티를 n %(n < m) 씩 순차적으로 감소시키면서, 상기 고전압 릴레이가 오프되는 지를 판별하는 2단계와, 상기 고전압 렐레이가 오프되면, 상기 PWM 신호의 듀티를 m% 씩 순차적으로 감소시키면서, 듀티가 0%가 될 때까지 PWM 신호의 듀티를 감소시키는 3단계를 포함하여 이루어지는 것을 특징으로 한다. In addition, the high voltage power relay noise reduction method according to the present invention, when turning off the high voltage relay, step 1 to sequentially reduce the duty of the PWM signal applied to the high voltage relay terminal included in the motor controller by m%, and the PWM A second step of determining whether the high voltage relay is turned off while sequentially decreasing the duty of the PWM signal by n% (n < m) when the supply voltage becomes lower than the preset threshold voltage by the signal; When the ray is turned off, the duty cycle of the PWM signal is sequentially reduced by m% while reducing the duty of the PWM signal until the duty becomes 0%.

이하, 상기한 바와 같이 구성된 본 발명에 대해 첨부도면을 참조하여 상세히 설명한다.Hereinafter, the present invention configured as described above will be described in detail with reference to the accompanying drawings.

도 2는 본 발명에 적용되는 고전압 파워 릴레이 제어장치에 대한 구성을 나타낸 도면으로, 상기 고전압 파워 릴레이(20)는, 고전압 배터리(10)와 모터 제어기(40) 사이에 장착되어, 전압 단락(Short) 발생시, 안전을 유지하기 위한 안전 장치로 사용되며, 상기 모터 제어기(40)에 포함된 고전압 릴레이 단자(400)에 의해 온/오프된다.2 is a view showing a configuration of a high voltage power relay control device applied to the present invention, the high voltage power relay 20 is mounted between the high voltage battery 10 and the motor controller 40, the voltage short (Short) ) Is used as a safety device for maintaining safety, and is turned on / off by the high voltage relay terminal 400 included in the motor controller 40.

한편, 상기 모터 제어기(40)에서는, 점화장치 키(Ignition Key)가 온되면, 종래기술에서와 같이, 상기 고전압 릴레이(20)를 온시키는 동작을 수행하되, 도 3에 나타낸 바와 같이, 상기 고전압 릴레이(20)가, 사전에 설정된 문턱 전압(Thresh Hold Volt) 영역에서 작동되도록, 모터 제어기 내에 포함된 고전압 릴레이 단자(400)를 PWM으로 제어하게 된다.On the other hand, in the motor controller 40, when the ignition device (Ignition Key) is turned on, as in the prior art, to perform the operation to turn on the high voltage relay 20, as shown in Figure 3, the high voltage The relay 20 controls the high voltage relay terminal 400 included in the motor controller with PWM so that the relay 20 is operated in a predetermined threshold voltage (Thresh Hold Volt) region.

즉, 도 4에 나타낸 바와 같이, 점화장치 키가 온되고(S1), 릴레이 온 커맨드가 수신되면(S2), 상기 고전압 릴레이 단자(400)에 인가되는 PWM 신호의 듀티 (Duty)를 1% 씩 순차적으로 증가시키게 된다(S3).That is, as shown in FIG. 4, when the ignition device key is turned on (S1) and a relay on command is received (S2), the duty of the PWM signal applied to the high voltage relay terminal 400 is reduced by 1%. It is increased sequentially (S3).

그리고, 상기와 같이 증가되는 PWM 신호에 의해 공급 전압이, 사전에 설정된 문턱 전압(예: X)을 초과하게 되면(S4), PWM 신호의 듀티(Duty)를 0.2% 씩 순차적으로 증가시키면서(S5), 상기 고전압 릴레이(20)가 온되는 지를 판별하게 되며, 이후 상기 고전압 렐레이(20)가 온되면(S6), 상기 PWM 신호의 듀티(Duty)를 1% 씩 순차적으로 증가시키면서(S7), 듀티가 100%가 될 때까지(S8), 상기와 같은 동작을 수행하게 된다.When the supply voltage exceeds the preset threshold voltage (for example, X) by the increased PWM signal as described above (S4), the duty of the PWM signal is sequentially increased by 0.2% (S5). When the high voltage relay 20 is turned on (S6), the duty cycle of the PWM signal is sequentially increased by 1% (S7). Until the duty reaches 100% (S8), the above operation is performed.

이에 따라, 상기 고전압 릴레이(20)를 온시키는 데 필요한 Force를 최소화하여, 소음 발생을 저감시키게 된다.Accordingly, by minimizing the force required to turn on the high voltage relay 20, it is possible to reduce the generation of noise.

한편, 상기 모터 제어기(40)에서는, 상기 고전압 릴레이를 오프시키는 경우에는, 고전압 릴레이의 (+)와 (-)를 소정 시차를 두고 오프시키는 데, 예를 들어 도 5에 나타낸 바와 같이, 상기 고전압 릴레이(20)가, 사전에 설정된 문턱 전압(Thresh Hold Volt) 영역에서 작동되도록, 모터 제어기 내에 포함된 고전압 릴레이 단자(400)를 PWM으로 제어하게 된다.On the other hand, in the motor controller 40, when the high voltage relay is turned off, the positive voltage and the negative voltage of the high voltage relay are turned off with a predetermined time difference, for example, as shown in FIG. The relay 20 controls the high voltage relay terminal 400 included in the motor controller with PWM so that the relay 20 is operated in a predetermined threshold voltage (Thresh Hold Volt) region.

즉, 도 6에 나타낸 바와 같이, 점화장치 키가 오프되어, 릴레이 오프 커맨드가 수신되면(S10), 상기 고전압 릴레이 단자(400)에 인가되는 PWM 신호의 듀티(Duty)를 1% 씩 순차적으로 감소시키게 된다(S11).That is, as shown in FIG. 6, when the ignition device key is turned off and a relay off command is received (S10), the duty of the PWM signal applied to the high voltage relay terminal 400 is sequentially decreased by 1%. It is made (S11).

그리고, 상기와 같이 감소되는 PWM 신호에 의해 공급 전압이, 사전에 설정된 문턱 전압(예: X) 미만이 되면(S12), PWM 신호의 듀티(Duty)를 0.2% 씩 순차적으로 감소시키면서(S13), 상기 고전압 릴레이(20)가 오프되는 지를 판별하게 되며, 이후 상기 고전압 렐레이(20)가 오프되면(S14), 상기 PWM 신호의 듀티(Duty)를 1% 씩 순차적으로 감소시키면서(S15), 듀티가 0%가 될 때까지(S16), 상기와 같은 동작을 수행하게 된다.When the supply voltage is lower than the preset threshold voltage (for example, X) by the PWM signal reduced as described above (S12), the duty of the PWM signal is sequentially decreased by 0.2% (S13). When the high voltage relay 20 is turned off (S14), the duty cycle of the PWM signal is sequentially reduced by 1% (S15). Until the duty reaches 0% (S16), the above operation is performed.

이에 따라, 상기 고전압 릴레이(20)를 오프시키는 데 필요한 Force를 최소화하여, 소음 발생을 저감시키게 된다. Accordingly, the force required to turn off the high voltage relay 20 is minimized to reduce the noise.

본 발명은 전술한 전형적인 바람직한 실시예들에만 한정되는 것이 아니라 본 발명의 요지를 벗어나지 않는 범위 내에서 여러 가지로 개량, 변경, 대체 또는 부가하여 실시할 수 있는 것임은 당해 기술분야에 통상의 지식을 가진 자라면 용이하게 이해할 수 있을 것이다. 이러한 개량, 변경, 대체 또는 부가에 의한 실시가 이하의 첨부된 특허청구범위의 범주에 속하는 것이라면 그 기술사상 역시 본 발명에 속하는 것으로 보아야 한다.It is to be understood that the present invention is not limited to the above-described exemplary preferred embodiments, but may be embodied in various ways without departing from the spirit and scope of the present invention. If you have it, you can easily understand it. If the implementation by such improvement, change, replacement or addition falls within the scope of the appended claims, the technical idea should also be regarded as belonging to the present invention.

이상과 같이 본 발명에 따르면, 하이브리드 전기 자동차에 탑재되는 고전압 릴레이를, 펄스폭변조(PWM) 제어신호를 이용하여, 최소한의 Force로 온/오프시킴으로써, 상기 고전압 릴레이의 온/오프시 발생되는 소음을 최소화시킬 수 있게 되어, 차량의 상품성을 크게 향상시킬 수 있게 된다.According to the present invention as described above, by using the pulse width modulation (PWM) control signal, the high voltage relay mounted on the hybrid electric vehicle, by using a minimum force on / off, the noise generated when the high voltage relay on / off It is possible to minimize the, it is possible to greatly improve the merchandise of the vehicle.

Claims (2)

고전압 릴레이를 온시키는 경우, 모터 제어기에 포함된 고전압 릴레이 단자에 인가되는 PWM 신호의 듀티를 m % 씩 순차적으로 증가시키는 1단계와,In the case of turning on the high voltage relay, step 1 of sequentially increasing the duty of the PWM signal applied to the high voltage relay terminal included in the motor controller by m%, 상기 PWM 신호에 의해 공급 전압이, 사전에 설정된 문턱 전압을 초과하면, PWM 신호의 듀티를 n %(n < m) 씩 순차적으로 증가시키면서, 상기 고전압 릴레이가 온되는 지를 판별하는 2단계와, Determining whether the high voltage relay is turned on by sequentially increasing the duty of the PWM signal by n% (n <m) when the supply voltage exceeds the preset threshold voltage by the PWM signal; 상기 고전압 렐레이가 온되면, 상기 PWM 신호의 듀티를 m% 씩 순차적으로 증가시키면서, 듀티가 100%가 될 때까지 PWM 신호의 듀티를 증가시키는 3단계를 포함하여 이루어지는 것을 특징으로 하는 고전압 파워 릴레이 소음 저감방법. A high voltage power relay comprising three steps of increasing the duty of the PWM signal until the duty reaches 100% while sequentially increasing the duty of the PWM signal by m% when the high voltage relay is turned on Noise reduction method. 고전압 릴레이를 오프시키는 경우, 모터 제어기에 포함된 고전압 릴레이 단자에 인가되는 PWM 신호의 듀티를 m % 씩 순차적으로 감소시키는 1단계와,In the case of turning off the high voltage relay, step 1 of sequentially decreasing the duty of the PWM signal applied to the high voltage relay terminal included in the motor controller by m%, 상기 PWM 신호에 의해 공급 전압이, 사전에 설정된 문턱 전압 이하가 되면, PWM 신호의 듀티를 n %(n < m) 씩 순차적으로 감소시키면서, 상기 고전압 릴레이가 오프되는 지를 판별하는 2단계와,Determining whether the high voltage relay is turned off while sequentially reducing the duty of the PWM signal by n% (n <m) when the supply voltage is lower than a preset threshold voltage by the PWM signal; 상기 고전압 렐레이가 오프되면, 상기 PWM 신호의 듀티를 m% 씩 순차적으로 감소시키면서, 듀티가 0%가 될 때까지 PWM 신호의 듀티를 감소시키는 3단계를 포함하여 이루어지는 것을 특징으로 하는 고전압 파워 릴레이 소음 저감방법.When the high voltage relay is turned off, the step of reducing the duty of the PWM signal by m% sequentially, while reducing the duty of the PWM signal until the duty is 0%, high voltage power relay comprising a Noise reduction method.
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