CN208507582U - A kind of relay and its degausser - Google Patents
A kind of relay and its degausser Download PDFInfo
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- CN208507582U CN208507582U CN201821177808.7U CN201821177808U CN208507582U CN 208507582 U CN208507582 U CN 208507582U CN 201821177808 U CN201821177808 U CN 201821177808U CN 208507582 U CN208507582 U CN 208507582U
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Abstract
本实用新型公开了一种继电器及其去磁电路,其中,去磁电路包括去磁支路,泄放负载和开关器件。去磁支路并联于继电器的线圈两端,能够在去磁过程中吸收线圈的剩磁能量。当需要去磁时,通过开关器件的关断使得线圈所在的供电回路断开,则线圈两端的剩磁通过上述去磁支路吸收。由于去磁电路中加入了储能型元件电容,使得电容能够存储剩磁能量,此时去磁电压是电容两端的电压与反向二极管的正向导通电压之和,因此,相比于仅是反向二极管的正向导通电压而言,能够快速去磁,从而可靠消除继电器回跳现象。此外,该电路结构简单,成本低,应用场景广泛。
The utility model discloses a relay and a demagnetization circuit thereof, wherein the demagnetization circuit comprises a demagnetization branch, a discharge load and a switch device. The demagnetization branch is connected in parallel with both ends of the coil of the relay, which can absorb the residual magnetic energy of the coil during the demagnetization process. When demagnetization is required, the power supply circuit where the coil is located is disconnected by turning off the switching device, and the residual magnetism at both ends of the coil is absorbed by the demagnetization branch. Since the energy storage element capacitor is added to the demagnetization circuit, the capacitor can store residual magnetic energy. At this time, the demagnetization voltage is the sum of the voltage across the capacitor and the forward voltage of the reverse diode. Therefore, compared with only the As far as the forward voltage of the reverse diode is concerned, it can quickly demagnetize, thereby reliably eliminating the relay bounce phenomenon. In addition, the circuit structure is simple, the cost is low, and the application scenarios are wide.
Description
技术领域technical field
本实用新型涉及继电器技术领域,特别是涉及一种继电器及其去磁电路。The utility model relates to the technical field of relays, in particular to a relay and a demagnetization circuit thereof.
背景技术Background technique
本实用新型提到的继电器为机械式结构继电器(带推杆),其在动作和开放过程中产生回跳是继电器的固有属性。之所以产生回跳是因为下述原因:本质上继电器的弹片是一种片状弹簧,而且通常选用弹性比较强的材料以保证可动弹片具有一定的恢复力,以使线圈断电后动静触点可以快速分断,当线圈通电时,通过推杆带动弹片快速运动,当可动触点到达静触点时产生剧烈的碰撞,速度在很短时间内降到零,产生极大的反向作用力,反作用力使弹片反向运动而使可动触点与静触点再次分开,产生一次回跳。此时,由于持续电流存在,线圈断电后仍会保持“剩磁”,这种剩磁和线圈通电时一样,使线圈产生的吸力一直存在,动静触点分开后又迅速闭合,而且线圈吸力远大于弹片的恢复力,经过多次后静止下来,回跳现象停止。The relay mentioned in the present invention is a mechanical structure relay (with a push rod), and it is an inherent property of the relay to generate bounce during the action and opening process. The reason why the rebound occurs is because of the following reasons: In essence, the shrapnel of the relay is a kind of leaf spring, and the material with strong elasticity is usually selected to ensure that the movable shrapnel has a certain restoring force, so that the dynamic and static contact after the coil is powered off. The point can be broken quickly. When the coil is energized, the shrapnel is driven by the push rod to move rapidly. When the movable contact reaches the static contact, a violent collision occurs, and the speed drops to zero in a very short time, resulting in a great reverse effect. The force and the reaction force make the shrapnel move in the opposite direction, so that the movable contact and the static contact are separated again, resulting in a rebound. At this time, due to the existence of continuous current, the coil will still maintain "residual magnetism" after the power is turned off. This residual magnetism is the same as when the coil is energized, so that the suction force generated by the coil always exists. Much larger than the restoring force of the shrapnel, it will stop after many times, and the rebound phenomenon will stop.
在有些电路中,这种回跳现象会使继电器的动静触点产生电弧甚至粘结在一起,造成继电器以及所在电路产生严重的后果。In some circuits, this bounce phenomenon will cause arcing or even bonding of the moving and static contacts of the relay, resulting in serious consequences for the relay and the circuit where it is located.
现有技术中,为了克服这一缺点,通常采用在线圈的两端并联一个反向二极管或线圈两端并联一个反向二极管和稳压二极管(反向二极管和稳压二极管为串联结构)。图1为现有技术提供的一种继电器的去磁电路。如图1所示,在线圈RLY的两端并联一个反向二极管D1,在线圈RLY和地之间增加一个三极管Q1,通过对三极管Q1的基极输入控制信号,从而控制三极管的导通和断开。当三极管Q1断开时,线圈RLY两端产生的反向电动势钳位于反向二极管D1的正向导通电压,从而抑制回跳的问题。但是,由于使用反向二极管D1作为去磁电路时,去磁电压为反向二极管D1的正向导通电压,去磁电压低,去磁慢。In the prior art, in order to overcome this shortcoming, a reverse diode is usually connected in parallel at both ends of the coil or a reverse diode and a Zener diode are connected in parallel at both ends of the coil (the reverse diode and the Zener diode are in series structure). FIG. 1 is a demagnetization circuit of a relay provided in the prior art. As shown in Figure 1, a reverse diode D1 is connected in parallel at both ends of the coil RLY, and a triode Q1 is added between the coil RLY and the ground. By inputting a control signal to the base of the triode Q1, the on and off of the triode are controlled. open. When the transistor Q1 is turned off, the reverse electromotive force generated at both ends of the coil RLY is clamped at the forward conduction voltage of the reverse diode D1, thereby suppressing the problem of bounce. However, when the reverse diode D1 is used as the demagnetization circuit, the demagnetization voltage is the forward voltage of the reverse diode D1, the demagnetization voltage is low, and the demagnetization is slow.
由此可见,如何加快线圈的去磁速度,从而克服继电器回跳的问题是本领域技术人员亟待解决的问题。It can be seen from this that how to speed up the demagnetization speed of the coil so as to overcome the problem of relay bounce is an urgent problem to be solved by those skilled in the art.
实用新型内容Utility model content
本实用新型的目的是提供一种继电器的去磁电路,用于加快线圈的去磁速度,从而克服继电器回跳的问题。此外,本实用新型还提供一种包含该去磁电路的继电器。The purpose of the utility model is to provide a demagnetization circuit for a relay, which is used to speed up the demagnetization speed of the coil, thereby overcoming the problem of the relay bounce. In addition, the present invention also provides a relay including the demagnetization circuit.
为解决上述技术问题,本实用新型提供一种继电器的去磁电路,包括并联于继电器的线圈两端的去磁支路,泄放负载和开关器件,所述去磁支路包括串联连接的电容和反向二极管,所述泄放负载并联于所述电容的两端,用于吸收所述电容释放的电能,所述开关器件设置于所述线圈所在的供电回路,用于根据开关信号导通或断开所述供电回路。In order to solve the above technical problems, the present utility model provides a demagnetization circuit of a relay, which includes a demagnetization branch connected in parallel with both ends of the coil of the relay, a discharge load and a switching device, and the demagnetization branch includes a capacitor connected in series and a switching device. a reverse diode, the discharge load is connected in parallel with both ends of the capacitor, and is used to absorb the electric energy released by the capacitor; Disconnect the power supply circuit.
优选地,所述泄放负载具体为泄放电阻。Preferably, the bleeder load is specifically a bleeder resistor.
优选地,所述开关器件具体为三极管。Preferably, the switching device is specifically a triode.
优选地,所述三极管具体为NPN型三极管,所述NPN型三极管的基极作为所述开关信号的输入端,所述NPN型三极管的集电极与所述线圈和所述反向二极管的阳极组成的公共端连接,所述NPN型三极管的发射极接地。Preferably, the triode is an NPN triode, the base of the NPN triode serves as the input end of the switching signal, and the collector of the NPN triode is composed of the coil and the anode of the reverse diode The common terminal is connected, and the emitter of the NPN transistor is grounded.
优选地,还包括限流电阻,所述限流电阻设置于所述NPN型三极管的基极的前端以作为所述开关信号的输入端。Preferably, a current limiting resistor is also included, and the current limiting resistor is disposed at the front end of the base of the NPN triode to serve as the input end of the switch signal.
优选地,还包括分压电阻,所述分压电阻的一端与所述NPN型三极管的基极连接,所述分压电阻的另一端与所述NPN型三极管的发射极连接。Preferably, a voltage dividing resistor is also included, one end of the voltage dividing resistor is connected to the base of the NPN triode, and the other end of the voltage dividing resistor is connected to the emitter of the NPN triode.
为解决上述技术问题,本实用新型还提供一种继电器,包括继电器本体,还包括上述所述的去磁电路。In order to solve the above technical problems, the present invention also provides a relay, which includes a relay body and the above-mentioned demagnetization circuit.
本实用新型所提供的去磁电路,包括去磁支路,泄放负载和开关器件,其中,去磁支路并联于继电器的线圈两端,能够在去磁过程中吸收线圈的剩磁能量。当需要去磁时,通过开关器件的关断使得线圈所在的供电回路断开,则线圈两端的剩磁通过上述去磁支路吸收。由于去磁电路中加入了储能型元件电容,使得电容能够存储剩磁能量,此时去磁电压是电容两端的电压与反向二极管的正向导通电压之和,因此,相比于仅是反向二极管的正向导通电压而言,能够快速去磁,从而可靠消除继电器回跳现象。此外,该电路结构简单,成本低,应用场景广泛。最后,本实用新型所提供的继电器,也同样具有上述有益效果。The demagnetization circuit provided by the utility model includes a demagnetization branch, a discharge load and a switch device, wherein the demagnetization branch is connected in parallel with both ends of the coil of the relay, and can absorb the residual magnetic energy of the coil during the demagnetization process. When demagnetization is required, the power supply circuit where the coil is located is disconnected by turning off the switching device, and the residual magnetism at both ends of the coil is absorbed by the demagnetization branch. Since the energy storage element capacitor is added to the demagnetization circuit, the capacitor can store residual magnetic energy. At this time, the demagnetization voltage is the sum of the voltage across the capacitor and the forward voltage of the reverse diode. Therefore, compared with only the As far as the forward voltage of the reverse diode is concerned, it can quickly demagnetize, thereby reliably eliminating the relay bounce phenomenon. In addition, the circuit structure is simple, the cost is low, and the application scenarios are wide. Finally, the relay provided by the present invention also has the above beneficial effects.
附图说明Description of drawings
为了更清楚地说明本实用新型实施例,下面将对实施例中所需要使用的附图做简单的介绍,显而易见地,下面描述中的附图仅仅是本实用新型的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动的前提下,还可以根据这些附图获得其他的附图。In order to explain the embodiments of the present invention more clearly, the following will briefly introduce the accompanying drawings used in the embodiments. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention, which are very important in the art. For those of ordinary skill, other drawings can also be obtained from these drawings without any creative effort.
图1为现有技术提供的一种继电器的去磁电路;1 is a demagnetization circuit of a relay provided by the prior art;
图2为本实用新型实施例提供的一种继电器的去磁电路的电路图;2 is a circuit diagram of a demagnetization circuit of a relay provided by an embodiment of the present invention;
图3为本实用新型实施例提供的另一种继电器的去磁电路的电路图。FIG. 3 is a circuit diagram of another demagnetization circuit of a relay provided by an embodiment of the present invention.
具体实施方式Detailed ways
下面将结合本实用新型实施例中的附图,对本实用新型实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本实用新型一部分实施例,而不是全部实施例。基于本实用新型中的实施例,本领域普通技术人员在没有做出创造性劳动前提下,所获得的所有其他实施例,都属于本实用新型保护范围。The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. . Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.
本实用新型的核心是提供一种继电器的去磁电路,用于加快线圈的去磁速度,从而克服继电器回跳的问题。此外,本实用新型还提供一种包含该去磁电路的继电器。The core of the utility model is to provide a demagnetization circuit of the relay, which is used to speed up the demagnetization speed of the coil, so as to overcome the problem of the relay bounce. In addition, the present invention also provides a relay including the demagnetization circuit.
为了使本技术领域的人员更好地理解本实用新型方案,下面结合附图和具体实施方式对本实用新型作进一步的详细说明。In order to make those skilled in the art better understand the solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
图2为本实用新型实施例提供的一种继电器的去磁电路的电路图。如图2所示,该去磁电路包括并联于继电器的线圈RLY两端的去磁支路,泄放负载(图2中通过泄放电阻R1实现)和开关器件(图2中通过三极管Q1实现),去磁支路包括串联连接的电容C1和反向二极管D1,泄放负载并联于电容C1的两端,用于吸收电容C1释放的电能,开关器件设置于线圈RLY所在的供电回路,用于根据开关信号导通或断开供电回路。FIG. 2 is a circuit diagram of a demagnetization circuit of a relay provided by an embodiment of the present invention. As shown in Figure 2, the demagnetization circuit includes a demagnetization branch connected in parallel with both ends of the coil RLY of the relay, a bleeder load (implemented by a bleeder resistor R1 in Figure 2) and a switching device (implemented by a transistor Q1 in Figure 2) , the demagnetization branch includes a capacitor C1 and a reverse diode D1 connected in series, the discharge load is connected in parallel with both ends of the capacitor C1, and is used to absorb the electric energy released by the capacitor C1. Turn on or off the power supply circuit according to the switch signal.
需要说明的是,本实施例中的泄放负载是指能够吸收线圈RLY的电能的所有器件,例如,可以是电阻,为了与其他电阻区别,也称为泄放电阻R1。可以理解的是,电阻作为泄放负载,不仅成本低,而且响应速度也快。可以理解的是,除了电阻以外,其他类型的器件也可作为泄放负载,本实施例不再赘述。It should be noted that the bleeder load in this embodiment refers to all devices capable of absorbing the electrical energy of the coil RLY, for example, it may be a resistor, which is also called a bleeder resistor R1 in order to distinguish it from other resistors. It is understandable that, as a bleeder load, the resistance is not only low cost, but also has a fast response speed. It can be understood that, in addition to resistors, other types of devices can also be used as bleeder loads, and details are not described in this embodiment.
如图2所示,线圈RLY的两端分别定义为第一端和第二端,第一端与电源正极+VCC连接,第二端通过开关器件接地,当开关器件导通时,线圈RLY的供电回路是导通的,当开关器件断开时,线圈RLY的供电回路是断开的。当线圈RLY供电回路导通时,线圈RLY得电,此时,如果断开供电回路,则线圈RLY两端的反电动势会通过去磁支路释放,这与现有技术是相同的。只不过,本实施例中,去磁支路与现有技术不同。去磁支路中除了反向二极管D1(反向二极管D1的阳极与线圈RLY的第二端连接,反向二极管D1的阴极与电容C1的一端连接,电容C1的另一端与线圈RLY的第一端连接),还包括一个电容C1,电容C1的作用是用来快速吸收线圈RLY的剩磁产生的能量并保存,即先充电,然后通过泄放负载泄放,即再放电,具体过程如下:As shown in Figure 2, the two ends of the coil RLY are defined as the first end and the second end, respectively, the first end is connected to the positive +VCC of the power supply, and the second end is grounded through the switching device. When the switching device is turned on, the coil RLY The power supply loop is turned on, and when the switching device is turned off, the power supply loop of the coil RLY is disconnected. When the power supply circuit of the coil RLY is turned on, the coil RLY is energized. At this time, if the power supply circuit is disconnected, the back electromotive force at both ends of the coil RLY will be released through the demagnetization branch, which is the same as the prior art. However, in this embodiment, the demagnetization branch is different from that in the prior art. In the demagnetization branch, except for the reverse diode D1 (the anode of the reverse diode D1 is connected to the second end of the coil RLY, the cathode of the reverse diode D1 is connected to one end of the capacitor C1, and the other end of the capacitor C1 is connected to the first end of the coil RLY. It also includes a capacitor C1. The function of the capacitor C1 is to quickly absorb the energy generated by the remanence of the coil RLY and save it, that is, charging first, and then discharging through the discharge load, that is, discharging again. The specific process is as follows:
去磁过程:Demagnetization process:
当需要继电器动静触点分断时,给开关器件关断信号使得开关器件断开,此时,线圈RLY产生反向电动势通过反向二极管D1给电容C1充电,将剩磁能量储存于电容C1上,可以理解的是,随着剩磁能量的不断转移,电容C1的电压会逐渐升高,而此时线圈RLY的去磁电压为反向二极管D1的正向导通电压与电容C1的电压之和,从而可以有效加快线圈RLY去磁速度,避免继电器回跳。相对于现有技术而言,本实施例中的线圈RLY的去磁电压在反向二极管D1的正向导通电压基础上,增加了电容C1的电压,因此,能够快速实现去磁。When the moving and static contacts of the relay need to be disconnected, the switch device is turned off by a signal to turn off the switch device. At this time, the coil RLY generates a reverse electromotive force to charge the capacitor C1 through the reverse diode D1, and the residual magnetic energy is stored on the capacitor C1. It can be understood that with the continuous transfer of the residual magnetic energy, the voltage of the capacitor C1 will gradually increase, and the demagnetization voltage of the coil RLY at this time is the sum of the forward conduction voltage of the reverse diode D1 and the voltage of the capacitor C1, Therefore, the demagnetization speed of the coil RLY can be effectively accelerated and the relay bounce can be avoided. Compared with the prior art, the demagnetization voltage of the coil RLY in this embodiment increases the voltage of the capacitor C1 on the basis of the forward conduction voltage of the reverse diode D1, so that the demagnetization can be quickly realized.
充磁过程:Magnetizing process:
当需要继电器动静触点吸合时,给开关器件导通信号使得开关器件导通此时,线圈RLY所在的供电回路导通,线圈RLY上有电流通过,并且电容C1通过泄放负载放电,使其两端压差还原为零,保证在下次去磁时,能继续吸收剩磁能量。When the moving and static contacts of the relay need to be pulled in, the switching device is turned on by a signal to make the switching device turn on. At this time, the power supply circuit where the coil RLY is located is turned on, the coil RLY has a current passing through it, and the capacitor C1 discharges through the discharge load, so that the The pressure difference between its two ends is restored to zero, which ensures that the residual magnetic energy can continue to be absorbed during the next demagnetization.
本实施例提供的去磁电路,包括去磁支路,泄放负载和开关器件,其中,去磁支路并联于继电器的线圈两端,能够在去磁过程中吸收线圈的剩磁能量。当需要去磁时,通过开关器件的关断使得线圈所在的供电回路断开,则线圈两端的剩磁通过上述去磁支路吸收。由于去磁电路中加入了储能型元件电容,使得电容能够存储剩磁能量,此时去磁电压是电容两端的电压与反向二极管的正向导通电压之和,因此,相比于仅是反向二极管的正向导通电压而言,能够快速去磁,从而可靠消除继电器回跳现象。此外,该电路结构简单,成本低,应用场景广泛。The demagnetization circuit provided in this embodiment includes a demagnetization branch, a discharge load and a switching device, wherein the demagnetization branch is connected in parallel with both ends of the coil of the relay, and can absorb the residual magnetic energy of the coil during the demagnetization process. When demagnetization is required, the power supply circuit where the coil is located is disconnected by turning off the switching device, and the residual magnetism at both ends of the coil is absorbed by the demagnetization branch. Since the energy storage element capacitor is added to the demagnetization circuit, the capacitor can store residual magnetic energy. At this time, the demagnetization voltage is the sum of the voltage across the capacitor and the forward voltage of the reverse diode. Therefore, compared with only the As far as the forward voltage of the reverse diode is concerned, it can quickly demagnetize, thereby reliably eliminating the relay bounce phenomenon. In addition, the circuit structure is simple, the cost is low, and the application scenarios are wide.
作为一种优选地实施方式,上述实施例中的开关器件具体为三极管Q1。As a preferred implementation manner, the switching device in the above embodiment is specifically a transistor Q1.
可以理解的是,除了三极管Q1之外,MOS管等开关管也可以作为开关器件。相对于其他器件来说,三极管Q1成本较低,具有电流放大作用。开关信号作为控制开关器件的导通和关断的信号,是需要依据开关器件的类型而确定的,具体内容本领域技术人员能够熟知,本文不再赘述。It can be understood that, in addition to the transistor Q1, a switch tube such as a MOS tube can also be used as a switch device. Compared with other devices, the transistor Q1 has a lower cost and has the function of current amplification. The switching signal, as a signal for controlling the on and off of the switching device, needs to be determined according to the type of the switching device, and the specific content will be well known to those skilled in the art, and will not be repeated herein.
作为一种优选地实施方式,三极管Q1具体为NPN型三极管,NPN型三极管的基极作为开关信号的输入端,NPN型三极管的集电极与线圈RLY和反向二极管D1的阳极组成的公共端连接,NPN型三极管的发射极接地。As a preferred embodiment, the transistor Q1 is specifically an NPN transistor, the base of the NPN transistor is used as the input end of the switching signal, and the collector of the NPN transistor is connected to the common terminal formed by the coil RLY and the anode of the reverse diode D1 , the emitter of the NPN transistor is grounded.
如图2所示,三极管Q1具体为NPN型三极管,则对应的开关信号为低电平或高电平,具体的,当去磁时,开关信号为低电平,此时NPN型三极管关断,当充磁时,开关信号为高电平,此时NPN型三极管导通。As shown in Figure 2, the transistor Q1 is specifically an NPN transistor, and the corresponding switch signal is low level or high level. Specifically, when demagnetizing, the switch signal is low level, and the NPN transistor is turned off at this time. , when magnetized, the switch signal is high, and the NPN transistor is turned on at this time.
图3为本实用新型实施例提供的另一种继电器的去磁电路的电路图。如图3所示,去磁电路还包括限流电阻R2,限流电阻R2设置于NPN型三极管的基极的前端以作为开关信号的输入端。作为一种优选地实施方式,还包括分压电阻R3,分压电阻R3的一端与NPN型三极管的基极连接,分压电阻R3的另一端与NPN型三极管的发射极连接。FIG. 3 is a circuit diagram of another demagnetization circuit of a relay provided by an embodiment of the present invention. As shown in FIG. 3 , the demagnetization circuit further includes a current limiting resistor R2 , which is disposed at the front end of the base of the NPN triode to serve as the input end of the switching signal. As a preferred embodiment, it also includes a voltage dividing resistor R3, one end of the voltage dividing resistor R3 is connected to the base of the NPN triode, and the other end of the voltage dividing resistor R3 is connected to the emitter of the NPN triode.
可以理解的是,限流电阻R2和分压电阻R3的阻值选取需要根据电路实际参数选取,本实施例不再赘述。It can be understood that the selection of the resistance values of the current limiting resistor R2 and the voltage dividing resistor R3 needs to be selected according to the actual parameters of the circuit, which will not be repeated in this embodiment.
上述实施例中对于继电器的去磁电路进行了详细说明。本实用新型还提供一种包含该去磁电路的继电器。可以理解的是,继电器本体的结构并不需要做任何改进,因此,可参见现有技术。In the above embodiments, the demagnetization circuit of the relay is described in detail. The utility model also provides a relay including the demagnetization circuit. It can be understood that the structure of the relay body does not need any improvement, therefore, reference can be made to the prior art.
本实施例提供的继电器,由于包含有去磁电路,去磁电路,包括去磁支路,泄放负载和开关器件,其中,去磁支路并联于继电器的线圈两端,能够在去磁过程中吸收线圈的剩磁能量。当需要去磁时,通过开关器件的关断使得线圈所在的供电回路断开,则线圈两端的剩磁通过上述去磁支路吸收。由于去磁电路中加入了储能型元件电容,使得电容能够存储剩磁能量,此时去磁电压是电容两端的电压与反向二极管的正向导通电压之和,因此,相比于仅是反向二极管的正向导通电压而言,能够快速去磁,从而可靠消除继电器回跳现象。Since the relay provided in this embodiment includes a demagnetization circuit, the demagnetization circuit includes a demagnetization branch, a bleeder load and a switching device, wherein the demagnetization branch is connected in parallel with both ends of the coil of the relay, and can be used during the demagnetization process. absorbs the residual magnetic energy of the coil. When demagnetization is required, the power supply circuit where the coil is located is disconnected by turning off the switching device, and the residual magnetism at both ends of the coil is absorbed by the demagnetization branch. Since the energy storage element capacitor is added to the demagnetization circuit, the capacitor can store residual magnetic energy. At this time, the demagnetization voltage is the sum of the voltage across the capacitor and the forward voltage of the reverse diode. Therefore, compared with only the As far as the forward voltage of the reverse diode is concerned, it can quickly demagnetize, thereby reliably eliminating the relay bounce phenomenon.
以上对本实用新型所提供的继电器及其去磁电路。此外,本实用新型还提供一种包含该去磁电路的继电器进行了详细介绍。说明书中各个实施例采用递进的方式描述,每个实施例重点说明的都是与其他实施例的不同之处,各个实施例之间相同相似部分互相参见即可。对于实施例公开的装置而言,由于其与实施例公开的方法相对应,所以描述的比较简单,相关之处参见方法部分说明即可。应当指出,对于本技术领域的普通技术人员来说,在不脱离本实用新型原理的前提下,还可以对本实用新型进行若干改进和修饰,这些改进和修饰也落入本实用新型权利要求的保护范围内。The above is the relay and its demagnetization circuit provided by the present utility model. In addition, the present invention also provides a relay including the demagnetization circuit, which is introduced in detail. The various embodiments in the specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments, and the same and similar parts between the various embodiments can be referred to each other. As for the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant part can be referred to the description of the method. It should be pointed out that for those of ordinary skill in the art, without departing from the principles of the present utility model, some improvements and modifications can also be made to the present utility model, and these improvements and modifications also fall into the protection of the claims of the present utility model. within the range.
还需要说明的是,在本说明书中,诸如第一和第二等之类的关系术语仅仅用来将一个实体或者操作与另一个实体或操作区分开来,而不一定要求或者暗示这些实体或操作之间存在任何这种实际的关系或者顺序。而且,术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含,从而使得包括一系列要素的过程、方法、物品或者设备不仅包括那些要素,而且还包括没有明确列出的其他要素,或者是还包括为这种过程、方法、物品或者设备所固有的要素。在没有更多限制的情况下,由语句“包括一个……”限定的要素,并不排除在包括所述要素的过程、方法、物品或者设备中还存在另外的相同要素。It should also be noted that, in this specification, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply these entities or operations. There is no such actual relationship or sequence between operations. Moreover, the terms "comprising", "comprising" or any other variation thereof are intended to encompass a non-exclusive inclusion such that a process, method, article or device that includes a list of elements includes not only those elements, but also includes not explicitly listed or other elements inherent to such a process, method, article or apparatus. Without further limitation, an element qualified by the phrase "comprising a..." does not preclude the presence of additional identical elements in a process, method, article or apparatus that includes the element.
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Cited By (3)
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CN110265262A (en) * | 2019-05-31 | 2019-09-20 | 昂宝电子(上海)有限公司 | Driving circuit and quick demagnetizing method for inductive relay |
CN113223896A (en) * | 2021-04-14 | 2021-08-06 | 东莞市中汇瑞德电子股份有限公司 | Double-coil energy-saving control circuit |
CN115104170A (en) * | 2020-02-10 | 2022-09-23 | Lg伊诺特有限公司 | Relay device and electric vehicle charging controller including the same |
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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CN110265262A (en) * | 2019-05-31 | 2019-09-20 | 昂宝电子(上海)有限公司 | Driving circuit and quick demagnetizing method for inductive relay |
CN115104170A (en) * | 2020-02-10 | 2022-09-23 | Lg伊诺特有限公司 | Relay device and electric vehicle charging controller including the same |
CN113223896A (en) * | 2021-04-14 | 2021-08-06 | 东莞市中汇瑞德电子股份有限公司 | Double-coil energy-saving control circuit |
CN113223896B (en) * | 2021-04-14 | 2025-06-17 | 东莞市中汇瑞德电子股份有限公司 | A dual-coil energy-saving control circuit |
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