WO2018049834A1 - Energy-saving relay - Google Patents

Energy-saving relay Download PDF

Info

Publication number
WO2018049834A1
WO2018049834A1 PCT/CN2017/084753 CN2017084753W WO2018049834A1 WO 2018049834 A1 WO2018049834 A1 WO 2018049834A1 CN 2017084753 W CN2017084753 W CN 2017084753W WO 2018049834 A1 WO2018049834 A1 WO 2018049834A1
Authority
WO
WIPO (PCT)
Prior art keywords
capacitor
resistor
diode
voltage
energy
Prior art date
Application number
PCT/CN2017/084753
Other languages
French (fr)
Chinese (zh)
Inventor
宋朝阳
Original Assignee
东莞市三友联众电器有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 东莞市三友联众电器有限公司 filed Critical 东莞市三友联众电器有限公司
Publication of WO2018049834A1 publication Critical patent/WO2018049834A1/en

Links

Images

Classifications

    • 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

Definitions

  • the invention belongs to the field of relays, and in particular to an energy-saving relay.
  • the high-voltage DC relay is high-voltage due to the use environment, so the contact distance will be very large.
  • the relay coil needs a lot of power to pull in, so as to ensure that the product can be smoothly and securely connected, and the relay maintains power after the relay is successfully sucked. There is no need to maintain the power of the pull-in at all times, and there is a huge difference between the power and the pull-in power. If you always use the pull-in power to maintain the "on" of the relay, the following defects will occur:
  • the present invention provides an energy-saving relay in which an energy-saving circuit is connected in series in a relay coil section. After the relay contacts are completely attracted, the effective value of the external input voltage is greatly reduced to achieve Energy saving purposes.
  • An energy-saving relay comprises a relay body and an energy-saving circuit connected in series with a coil in the relay body, wherein the energy-saving circuit comprises a voltage-stabilizing filter sampling module, an IC power management module, an IC pulse control module and a MOS tube opening and closing circuit module;
  • the regulated filter sampling module is used to adjust the input voltage to less than 5V;
  • the IC power management module is configured to convert the input voltage into a stable 5V voltage and provide the IC pulse control module;
  • the IC pulse control module is used to control the on/off time and the on/off time of the energy-saving circuit
  • MOS tube open and close circuit module used to convert the output voltage into an input voltage.
  • the voltage regulation filter sampling module comprises an inductor L1, an inductor L2, a capacitor C7, a diode D8, a MOS transistor Q2, a resistor R5, a resistor R3, a capacitor C4, a Zener diode D5, a diode D4;
  • IC power management module includes chip IC2, capacitor C5, capacitor C3, capacitor C2, resistor R7 and capacitor C1;
  • the IC pulse control module comprises a main control IC1 and a resistor R2;
  • the MOS tube opening and closing circuit module comprises a diode D2, a diode D6, a capacitor C8, a resistor R1, a Zener diode D3, a resistor R4, a capacitor C6, a MOS transistor Q1A, and a MOS transistor Q1B;
  • the inductor L2 and the capacitor C7 connected in series are connected to the anode of the diode D8 and the anode of the diode D4.
  • the cathode of the diode D8 is connected to the drain of the MOS transistor Q2 on the one hand, and one end of the resistor R5 on the other hand, and the other end of the resistor R5.
  • One end is connected with a parallel resistor R3, a capacitor C4, a Zener diode D5 and a main control IC1, and the other end of the resistor R3, the capacitor C4, and the Zener diode D5 are simultaneously grounded;
  • the gate of the MOS transistor Q2 is connected to the output end of the patch IC2 and At the same time, one end of the capacitor C2, one end of the resistor R7 and the main control IC1, the other end of the capacitor C2 is grounded, and the other end of the resistor R7 is grounded through the capacitor C1; a normally closed interface and an enabling leg of the patch IC2 are connected to one side
  • the source of the MOS transistor Q2 is connected to the parallel capacitor C3 and the capacitor C5 on the other hand;
  • the cathode of the diode D4 is connected to the cathode of the diode D2, the anode of the diode D6, and one end of the capacitor C8, and the other end of the capacitor C8 is grounded, and the voltage
  • Diode D3, resistor R4, capacitor C6 are connected in parallel with the gate of MOS transistor Q1A, and then connected to the cathode of diode D6 via resistor R1.
  • the anode of diode D2 is connected to the anode of parallel Zener diode D3 and the other end of resistor R4.
  • the other end of the drain capacitance C6, the source of the MOS transistor and the MOS transistor Q1A and Q1B; gate MOS transistor Q1B through the resistor R2 is connected to the master IC1, the source is grounded MOS transistor Q1B.
  • the input voltage of the relay input terminal of the invention is 9V-36V.
  • the invention provides an energy-saving relay, which is connected with an energy-saving circuit in a series of relay coils. After the relay contacts are completely attracted, the pulse-type supply maintains the voltage of the relay, so that the effective value of the external input voltage is greatly reduced, and the relay is maintained. Energy loss, energy saving.
  • FIG. 1 is a circuit diagram of an energy saving circuit of an energy-saving relay of the present invention.
  • FIG. 2 is a waveform diagram of an energy-saving relay voltage output in an embodiment of the present invention.
  • An energy-saving relay comprises a relay body and an energy-saving circuit connected in series with a coil in the relay body, wherein the energy-saving circuit comprises a voltage-stabilizing filter sampling module, an IC power management module, an IC pulse control module and a MOS tube opening and closing circuit module;
  • the regulated filter sampling module is used to adjust the input voltage to less than 5V (ie, the amount of IC pulse control module) Since the input voltage is a high voltage, the regulated filter sampling module adjusts the high voltage to the range voltage of the control chip (within 5V), and the control chip adjusts the duty ratio according to the sampling of the input voltage. The input voltage is higher. High, the smaller the duty cycle, the lower the input voltage and the higher the duty cycle.
  • the IC power management module is used to convert the input voltage into a stable 5V voltage and provides it to the IC pulse control module. Due to the instability of the input voltage, the IC power management module converts the input voltage into a stable voltage and provides it to the IC pulse control module to prevent The single IC pulse control module causes a malfunction due to unstable power supply voltage.
  • the IC pulse control module is used to control the on/off time and the on/off time of the energy-saving circuit; the IC pulse control module adjusts the duty ratio according to the voltage value collected by the sampling circuit of the voltage stabilization filter circuit, and the higher the input voltage is, the duty ratio The smaller the input voltage, the higher the duty cycle.
  • MOS tube open and close circuit module used to convert the output voltage into an input voltage and output to the load.
  • the voltage regulation filter sampling module comprises an inductor L1, an inductor L2, a capacitor C7, a diode D8, a MOS transistor Q2, a resistor R5, a resistor R3, a capacitor C4, a Zener diode D5, a diode D4;
  • IC power management module includes chip IC2, capacitor C5, capacitor C3, capacitor C2, resistor R7 and capacitor C1;
  • the IC pulse control module comprises a main control IC1 and a resistor R2;
  • the MOS tube opening and closing circuit module comprises a diode D2, a diode D6, a capacitor C8, a resistor R1, a Zener diode D3, a resistor R4, a capacitor C6, a MOS transistor Q1A, and a MOS transistor Q1B;
  • the inductor L2 and the capacitor C7 connected in series are connected to the anode of the diode D8 and the anode of the diode D4.
  • the cathode of the diode D8 is connected to the drain of the MOS transistor Q2 on the one hand, and one end of the resistor R5 on the other hand, and the other end of the resistor R5.
  • One end is connected with a parallel resistor R3, a capacitor C4, a Zener diode D5 and a main control IC1, and the other end of the resistor R3, the capacitor C4, and the Zener diode D5 are simultaneously grounded;
  • the gate of the MOS transistor Q2 is connected to the output end of the patch IC2 and
  • one end of the capacitor C2, one end of the resistor R7 and the main control IC1 are connected, the other end of the capacitor C2 is grounded, and the other end of the resistor R7 is grounded through the capacitor C1;
  • a normally closed interface NC and an enabling pin EN of the chip IC2 are on the one hand Connected to the source of MOS transistor Q2, on the other hand to capacitor C3 and capacitor C5 connected in parallel;
  • the cathode of diode D4 is connected to the cathode of diode D2, the anode of diode D6 and one end of capacitor C8, and the other end of capacitor C8 is grounded.
  • the Zener diode D3, the resistor R4, and the capacitor C6 are connected in parallel with the gate of the MOS transistor Q1A, and then connected to the cathode of the diode D6 via the resistor R1.
  • the anode of the diode D2 is connected to the anode of the Zener diode D3 connected in parallel, and the other end of the resistor R4.
  • Capacitor C6 The other end, the source of the MOS transistor Q1A and the drain of the MOS transistor Q1B; the gate of the MOS transistor Q1B is connected to the main control IC1 via the resistor R2, and the source of the MOS transistor Q1B is grounded.
  • the value of the resistor R1 is 6.8K
  • the value of the resistor R2 is 300R
  • the value of the resistor R3 is 10K
  • the value of the resistors R4 and R5 is 68K
  • the value of the resistor R7 is 2.2R
  • the values of capacitors C2, C5, and C7 are 3.3NF
  • the values of capacitors C4 and C6 are 33NF
  • the value of capacitor C8 is 2.2UF.
  • the values of inductors L1 and L2 are 1UH.
  • the models of diodes D2 and D4 are VS ⁇ 10MQ060NTRPBF, the model of diode D6 and D8 is BAS21, the model of Zener diode D3 and D5 is BZX84C5V1;
  • the MOS tube Q1 and Q2 are N-channel MOS tube, the MOS tube Q1 model is IRF7341IPBF, and the MOS tube Q2 model is DN3545N8
  • the model of the main control IC1 is PIC12F683 ⁇ I/SN; the model of the patch IC2 is MIC5200 ⁇ 50YM, which can provide stable voltage for the main control IC1 to ensure the normal operation of the circuit.
  • the input voltage of 9V-36V is input from the input end to the energy-saving circuit, and the voltage is divided by R5 and R3 in the voltage-stabilizing filter circuit, thereby ensuring that the voltage of the input main control IC1 is in its
  • the IC power management module is a MIC5200 ⁇ 50YM model chip with an operating voltage range of ⁇ 65V, the input voltage of 9V-36V is within its working range, and the MIC5200 ⁇ 50YM model chip will voltage.
  • the program programmed in IC1 calculates the time of the pull-in voltage according to the signal of the input voltage.
  • the time of "on” is controlled by the program, the time of "on” is the "duty cycle”, and the state of the main control IC1 is "on”, which can provide the pull-in voltage for the relay. status.
  • the output pin of the main control IC1 controls the opening/closing of the MOS transistor Q1B, and the output pin of the main control IC1 outputs the high level MOS.
  • the tube Q1B is closed, so that the branch connecting the MOS tube Q1A is grounded, and the output of the energy-saving circuit output terminal is supplied with the same voltage as the input voltage to the relay to provide the pull-in voltage; when the output pin of the main control IC1 outputs the low level, the MOS tube Q1B Disconnect, form an open circuit, stop power supply, and save energy.
  • the input terminal inputs 12V voltage, the output waveform of the relay is shown in Figure 2.
  • the right side of Figure 2 is an enlarged view of the partial waveform in the left circle.
  • the front end voltage is continuous for 100ms and the voltage value is 12V.
  • the voltage is pulsed voltage, the sustain voltage is 12V, the pulse width is 10us, the pulse period is 50us, so the duty ratio is 1/5.
  • the energy-saving circuit of the present invention passes the control IC1 of the main control IC1 in the previous stage for 100ms.
  • the time control circuit is turned on to provide the pull-in voltage of the relay, and the time of the on/off of the energy-saving circuit is controlled according to the duty ratio, which is the same as the time of the pulse-type sustain voltage of the latter stage, and the power-saving circuit is disconnected after providing the sustain voltage of 10 us, thereby achieving energy saving. the goal of.
  • the main control IC1 (can be regarded as a switch), the input terminal collects the voltage conversion value of the output of the voltage-stabilizing filter sampling module is 2 ⁇ 5V. According to the sampling data, the main control IC1 realizes the on/off to make the circuit generate and break, the main control The cycle of IC1 "on” and “off” is 50us, the time of "on” is controlled by the master IC1, and the time of "on” is the "duty" of one cycle. In this way, when the voltage is not required to be maintained, the energy-saving circuit is disconnected, the power supply is stopped, and the power consumption is reduced.
  • the energy-saving relay of the invention is based on the output waveform of the required pulse-type pull-in voltage after the instantaneous connection of the relay body, and the calculated duty ratio (the ratio of the pulse width to one pulse period) is controlled by the main control IC1.
  • the circuit is turned on and off, and the control energy-saving circuit realizes the on/off according to the duty cycle time, that is, the circuit is turned on when the relay needs to maintain the voltage, and the circuit is disconnected when the voltage is not maintained, which can reduce the energy consumption and has a wider application range.

Landscapes

  • Electronic Switches (AREA)
  • Relay Circuits (AREA)
  • Direct Current Feeding And Distribution (AREA)

Abstract

An energy-saving relay pertaining to the field of relays, and comprising a relay body and further comprising an energy-saving circuit in series with a coil in the relay body. The energy-saving circuit comprises a module for voltage regulation, filtering, and sampling, an IC power management module, an IC pulse control module, and a module for opening and closing the circuit by using a MOS transistor. The module for voltage regulation, filtering, and sampling is used to adjust an input voltage to be less than 5 V. The IC power management module is used for converting the input voltage to a stable voltage of 5 V and providing the same to the IC pulse control module. The IC pulse control module is used for controlling an on/off and on/off time of the energy-saving circuit. The module for opening and closing the circuit by using a MOS transistor is used for converting the input voltage to an output voltage. In the above relay, after a relay contact completes operation, the relay is supplied with a maintaining voltage in pulses, greatly reducing the effective value of an external input voltage, reducing energy lost in maintaining the relay, and saving energy.

Description

一种节能继电器Energy saving relay 技术领域Technical field
本发明属于继电器领域，具体地涉及一种节能继电器。The invention belongs to the field of relays, and in particular to an energy-saving relay.
背景技术Background technique
高压直流继电器因使用环境为高压，所以触点距离会做的非常大，继电器线圈需要很大的功率来吸合，以保证产品能够顺利牢靠的吸合，而继电器成功吸合后，其保持功率不需一直维持吸合功率那么大，保持功率与吸合功率存在巨大的差异。若一直使用吸合功率来维持继电器的“开”，将会产生以下缺陷：The high-voltage DC relay is high-voltage due to the use environment, so the contact distance will be very large. The relay coil needs a lot of power to pull in, so as to ensure that the product can be smoothly and securely connected, and the relay maintains power after the relay is successfully sucked. There is no need to maintain the power of the pull-in at all times, and there is a huge difference between the power and the pull-in power. If you always use the pull-in power to maintain the "on" of the relay, the following defects will occur:
1.线圈温升增加，带来安全隐患；1. The temperature rise of the coil increases, posing a safety hazard;
2.能耗损失严重。2. The energy loss is serious.
发明内容Summary of the invention
为了克服现有技术中存在的缺点和不足，本发明提供一种节能的继电器，在继电器线圈段串联节能电路，待继电器触点完全吸合之后，使外界输入电压有效值大幅度下降，以实现节能目的。In order to overcome the shortcomings and deficiencies in the prior art, the present invention provides an energy-saving relay in which an energy-saving circuit is connected in series in a relay coil section. After the relay contacts are completely attracted, the effective value of the external input voltage is greatly reduced to achieve Energy saving purposes.
本发明的技术方案如下：The technical solution of the present invention is as follows:
一种节能的继电器，包括继电器本体以及与继电器本体中的线圈串联的节能电路，所述的节能电路包括稳压滤波采样模块、IC电源管理模块、IC脉冲控制模块和MOS管开闭电路模块；An energy-saving relay comprises a relay body and an energy-saving circuit connected in series with a coil in the relay body, wherein the energy-saving circuit comprises a voltage-stabilizing filter sampling module, an IC power management module, an IC pulse control module and a MOS tube opening and closing circuit module;
稳压滤波采样模块用于将输入电压调节至小于5V；The regulated filter sampling module is used to adjust the input voltage to less than 5V;
IC电源管理模块用于将输入电压转换为稳定的5V电压提供给IC脉冲控制模块；The IC power management module is configured to convert the input voltage into a stable 5V voltage and provide the IC pulse control module;
IC脉冲控制模块用于控制节能电路的通\断及通\断的时间；The IC pulse control module is used to control the on/off time and the on/off time of the energy-saving circuit;
MOS管开闭电路模块：用于将输出电压转化为输入电压。MOS tube open and close circuit module: used to convert the output voltage into an input voltage.
其中：稳压滤波采样模块包括电感L1、电感L2、电容C7、二极管D8、MOS管Q2、电阻R5、电阻R3、电容C4、稳压二极管D5、二极管D4；Wherein: the voltage regulation filter sampling module comprises an inductor L1, an inductor L2, a capacitor C7, a diode D8, a MOS transistor Q2, a resistor R5, a resistor R3, a capacitor C4, a Zener diode D5, a diode D4;
IC电源管理模块包括贴片IC2、电容C5、电容C3、电容C2、电阻R7和电容C1；IC power management module includes chip IC2, capacitor C5, capacitor C3, capacitor C2, resistor R7 and capacitor C1;
IC脉冲控制模块包括主控IC1、电阻R2； The IC pulse control module comprises a main control IC1 and a resistor R2;
MOS管开闭电路模块包括二极管D2、二极管D6、电容C8、电阻R1、稳压二极管D3、电阻R4、电容C6、MOS管Q1A、MOS管Q1B；The MOS tube opening and closing circuit module comprises a diode D2, a diode D6, a capacitor C8, a resistor R1, a Zener diode D3, a resistor R4, a capacitor C6, a MOS transistor Q1A, and a MOS transistor Q1B;
串联的电感L2和电容C7并联电感L1后连接至二极管D8的正极、二极管D4的正极；二极管D8的负极一方面连接至MOS管Q2的漏极，另一方面连接电阻R5的一端，R5的另一端连接并联的电阻R3、电容C4、稳压二极管D5及主控IC1，电阻R3、电容C4、稳压二极管D5的另一端同时接地；MOS管Q2的栅极连接至贴片IC2的输出端并同时连接电容C2的一端、电阻R7的一端以及主控IC1，电容C2的另一端接地，电阻R7的另一端经过电容C1后接地；贴片IC2的一个常闭接口和使能脚一方面连接至MOS管Q2的源极，另一方面连接至并联的电容C3和电容C5；二极管D4的负极连接至二极管D2的负极、二极管D6的正极及电容C8的一端，电容C8的另一端接地，稳压二极管D3、电阻R4、电容C6与MOS管Q1A的栅极并联后经过电阻R1连接至二极管D6的负极，二极管D2的正极连接至并联的稳压二极管D3的正极、电阻R4的另一端、电容C6的另一端、MOS管Q1A的源极以及MOS管Q1B的漏极；MOS管Q1B的栅极经过电阻R2后连接至主控IC1，MOS管Q1B的源极接地。The inductor L2 and the capacitor C7 connected in series are connected to the anode of the diode D8 and the anode of the diode D4. The cathode of the diode D8 is connected to the drain of the MOS transistor Q2 on the one hand, and one end of the resistor R5 on the other hand, and the other end of the resistor R5. One end is connected with a parallel resistor R3, a capacitor C4, a Zener diode D5 and a main control IC1, and the other end of the resistor R3, the capacitor C4, and the Zener diode D5 are simultaneously grounded; the gate of the MOS transistor Q2 is connected to the output end of the patch IC2 and At the same time, one end of the capacitor C2, one end of the resistor R7 and the main control IC1, the other end of the capacitor C2 is grounded, and the other end of the resistor R7 is grounded through the capacitor C1; a normally closed interface and an enabling leg of the patch IC2 are connected to one side The source of the MOS transistor Q2 is connected to the parallel capacitor C3 and the capacitor C5 on the other hand; the cathode of the diode D4 is connected to the cathode of the diode D2, the anode of the diode D6, and one end of the capacitor C8, and the other end of the capacitor C8 is grounded, and the voltage is stabilized. Diode D3, resistor R4, capacitor C6 are connected in parallel with the gate of MOS transistor Q1A, and then connected to the cathode of diode D6 via resistor R1. The anode of diode D2 is connected to the anode of parallel Zener diode D3 and the other end of resistor R4. The other end of the drain capacitance C6, the source of the MOS transistor and the MOS transistor Q1A and Q1B; gate MOS transistor Q1B through the resistor R2 is connected to the master IC1, the source is grounded MOS transistor Q1B.
本发明一种继电器输入端输入的电压为9V‐36V。The input voltage of the relay input terminal of the invention is 9V-36V.
本发明的有益效果：The beneficial effects of the invention:
本发明提供一种节能的继电器，在继电器线圈段串联节能电路，待继电器触点完全吸合之后，脉冲式的提供继电器的维持电压，使外界输入电压有效值大幅度下降，降低继电器维持时的能源损耗，节能能源。The invention provides an energy-saving relay, which is connected with an energy-saving circuit in a series of relay coils. After the relay contacts are completely attracted, the pulse-type supply maintains the voltage of the relay, so that the effective value of the external input voltage is greatly reduced, and the relay is maintained. Energy loss, energy saving.
附图说明DRAWINGS
图1为本发明一种节能的继电器的节能电路的电路图。1 is a circuit diagram of an energy saving circuit of an energy-saving relay of the present invention.
图2是本发明实施例中一种节能的继电器电压输出波形图。2 is a waveform diagram of an energy-saving relay voltage output in an embodiment of the present invention.
具体实施方式detailed description
下面结合附图对本发明的技术方案进行详细的说明。The technical solution of the present invention will be described in detail below with reference to the accompanying drawings.
一种节能的继电器，包括继电器本体以及与继电器本体中的线圈串联的节能电路，所述的节能电路包括稳压滤波采样模块、IC电源管理模块、IC脉冲控制模块和MOS管开闭电路模块；An energy-saving relay comprises a relay body and an energy-saving circuit connected in series with a coil in the relay body, wherein the energy-saving circuit comprises a voltage-stabilizing filter sampling module, an IC power management module, an IC pulse control module and a MOS tube opening and closing circuit module;
稳压滤波采样模块用于将输入电压调节至小于5V(即IC脉冲控制模块的量 程电压以内)；由于输入的电压是一个高电压，稳压滤波采样模块将高电压调节到控制芯片的量程电压内(5V内)，控制芯片根据输入电压的取样调节占空比，输入电压越高，占空比越小，输入电压越低，占空比越大。The regulated filter sampling module is used to adjust the input voltage to less than 5V (ie, the amount of IC pulse control module) Since the input voltage is a high voltage, the regulated filter sampling module adjusts the high voltage to the range voltage of the control chip (within 5V), and the control chip adjusts the duty ratio according to the sampling of the input voltage. The input voltage is higher. High, the smaller the duty cycle, the lower the input voltage and the higher the duty cycle.
IC电源管理模块用于将输入电压转换为稳定的5V电压提供给IC脉冲控制模块；由于输入电压的不稳定性，IC电源管理模块将输入电压转换为稳定的电压提供给IC脉冲控制模块，防止单IC脉冲控制模块因为电源电压不稳定而导致功能错误。The IC power management module is used to convert the input voltage into a stable 5V voltage and provides it to the IC pulse control module. Due to the instability of the input voltage, the IC power management module converts the input voltage into a stable voltage and provides it to the IC pulse control module to prevent The single IC pulse control module causes a malfunction due to unstable power supply voltage.
IC脉冲控制模块用于控制节能电路的通\断及通\断的时间；IC脉冲控制模块根据稳压滤波电路采样电路采集到的电压值，调节占空比，输入电压越高，占空比越小，输入电压越低，占空比越大。The IC pulse control module is used to control the on/off time and the on/off time of the energy-saving circuit; the IC pulse control module adjusts the duty ratio according to the voltage value collected by the sampling circuit of the voltage stabilization filter circuit, and the higher the input voltage is, the duty ratio The smaller the input voltage, the higher the duty cycle.
MOS管开闭电路模块：用于将输出电压转化为输入电压后输出供给负载。MOS tube open and close circuit module: used to convert the output voltage into an input voltage and output to the load.
其中：稳压滤波采样模块包括电感L1、电感L2、电容C7、二极管D8、MOS管Q2、电阻R5、电阻R3、电容C4、稳压二极管D5、二极管D4；Wherein: the voltage regulation filter sampling module comprises an inductor L1, an inductor L2, a capacitor C7, a diode D8, a MOS transistor Q2, a resistor R5, a resistor R3, a capacitor C4, a Zener diode D5, a diode D4;
IC电源管理模块包括贴片IC2、电容C5、电容C3、电容C2、电阻R7和电容C1；IC power management module includes chip IC2, capacitor C5, capacitor C3, capacitor C2, resistor R7 and capacitor C1;
IC脉冲控制模块包括主控IC1、电阻R2；The IC pulse control module comprises a main control IC1 and a resistor R2;
MOS管开闭电路模块包括二极管D2、二极管D6、电容C8、电阻R1、稳压二极管D3、电阻R4、电容C6、MOS管Q1A、MOS管Q1B；The MOS tube opening and closing circuit module comprises a diode D2, a diode D6, a capacitor C8, a resistor R1, a Zener diode D3, a resistor R4, a capacitor C6, a MOS transistor Q1A, and a MOS transistor Q1B;
串联的电感L2和电容C7并联电感L1后连接至二极管D8的正极、二极管D4的正极；二极管D8的负极一方面连接至MOS管Q2的漏极，另一方面连接电阻R5的一端，R5的另一端连接并联的电阻R3、电容C4、稳压二极管D5及主控IC1，电阻R3、电容C4、稳压二极管D5的另一端同时接地；MOS管Q2的栅极连接至贴片IC2的输出端并同时连接电容C2的一端、电阻R7的一端以及主控IC1，电容C2的另一端接地，电阻R7的另一端经过电容C1后接地；贴片IC2的一个常闭接口NC和使能脚EN一方面连接至MOS管Q2的源极，另一方面连接至并联的电容C3和电容C5；二极管D4的负极连接至二极管D2的负极、二极管D6的正极及电容C8的一端，电容C8的另一端接地，稳压二极管D3、电阻R4、电容C6与MOS管Q1A的栅极并联后经过电阻R1连接至二极管D6的负极，二极管D2的正极连接至并联的稳压二极管D3的正极、电阻R4的另一端、电容C6 的另一端、MOS管Q1A的源极以及MOS管Q1B的漏极；MOS管Q1B的栅极经过电阻R2后连接至主控IC1，MOS管Q1B的源极接地。The inductor L2 and the capacitor C7 connected in series are connected to the anode of the diode D8 and the anode of the diode D4. The cathode of the diode D8 is connected to the drain of the MOS transistor Q2 on the one hand, and one end of the resistor R5 on the other hand, and the other end of the resistor R5. One end is connected with a parallel resistor R3, a capacitor C4, a Zener diode D5 and a main control IC1, and the other end of the resistor R3, the capacitor C4, and the Zener diode D5 are simultaneously grounded; the gate of the MOS transistor Q2 is connected to the output end of the patch IC2 and At the same time, one end of the capacitor C2, one end of the resistor R7 and the main control IC1 are connected, the other end of the capacitor C2 is grounded, and the other end of the resistor R7 is grounded through the capacitor C1; a normally closed interface NC and an enabling pin EN of the chip IC2 are on the one hand Connected to the source of MOS transistor Q2, on the other hand to capacitor C3 and capacitor C5 connected in parallel; the cathode of diode D4 is connected to the cathode of diode D2, the anode of diode D6 and one end of capacitor C8, and the other end of capacitor C8 is grounded. The Zener diode D3, the resistor R4, and the capacitor C6 are connected in parallel with the gate of the MOS transistor Q1A, and then connected to the cathode of the diode D6 via the resistor R1. The anode of the diode D2 is connected to the anode of the Zener diode D3 connected in parallel, and the other end of the resistor R4. Capacitor C6 The other end, the source of the MOS transistor Q1A and the drain of the MOS transistor Q1B; the gate of the MOS transistor Q1B is connected to the main control IC1 via the resistor R2, and the source of the MOS transistor Q1B is grounded.
在实施例中，电阻R1的值为6.8K，电阻R2的值为300R，电阻R3的值为10K，电阻R4、R5的值为68K，电阻R7的值为2.2R；电容C1、C3的值为1UF，电容C2、C5、C7的值为3.3NF，电容C4、C6的值为33NF，电容C8的值为2.2UF，；电感L1、L2的值为1UH；二极管D2、D4的的型号为VS‐10MQ060NTRPBF，二极管D6、D8的型号为BAS21，稳压二极管D3、D5的型号为BZX84C5V1；MOS管Q1、Q2均为N沟道MOS管，MOS管Q1型号为IRF7341IPBF，MOS管Q2型号为DN3545N8，主控IC1的型号是PIC12F683‐I/SN；贴片IC2的型号为MIC5200‐50YM，可以为主控IC1稳定的提供电压，保证电路正常运行。In the embodiment, the value of the resistor R1 is 6.8K, the value of the resistor R2 is 300R, the value of the resistor R3 is 10K, the value of the resistors R4 and R5 is 68K, the value of the resistor R7 is 2.2R, and the values of the capacitors C1 and C3. For 1UF, the values of capacitors C2, C5, and C7 are 3.3NF, the values of capacitors C4 and C6 are 33NF, and the value of capacitor C8 is 2.2UF. The values of inductors L1 and L2 are 1UH. The models of diodes D2 and D4 are VS‐10MQ060NTRPBF, the model of diode D6 and D8 is BAS21, the model of Zener diode D3 and D5 is BZX84C5V1; the MOS tube Q1 and Q2 are N-channel MOS tube, the MOS tube Q1 model is IRF7341IPBF, and the MOS tube Q2 model is DN3545N8 The model of the main control IC1 is PIC12F683‐I/SN; the model of the patch IC2 is MIC5200‐50YM, which can provide stable voltage for the main control IC1 to ensure the normal operation of the circuit.
下面结合具体的输入电压解释本发明的工作原理：9V‐36V的输入电压从输入端输入节能电路，经过稳压滤波电路中R5和R3进行分压，由此保证输入主控IC1的电压在其量程内(即小于5V)；同时，IC电源管理模块是MIC5200‐50YM型号的芯片，其工作电压区间为±65V，9V‐36V的输入电压在其工作范围内，MIC5200‐50YM型号的芯片将电压转换为稳定的5V电压输入至主控IC1，主控IC1接收到稳压滤波采样电路输入的电压后，IC1中烧录的程序根据该输入电压的信号计算出吸合电压的时间的占整个周期(吸合电压的时间与保持电压的时间总和)的占空比，主控IC1根据该占空比的值调节主控IC1的通\断状态，此IC1“通”与“断”一个循环即一个周期，通过程序控制“通”的时间，“通”的时间占比一个周期的时间即为“占空比”，主控IC1“通”的状态即为可以为继电器提供吸合电压的状态。其中输入电压越高，占空比越小，输入电压越低，占空比越大；由主控IC1的输出脚控制MOS管Q1B的开\闭，主控IC1的输出脚输出高电平时MOS管Q1B闭合，使连接MOS管Q1A的支路接地，节能电路输出端输出与输入电压相同的电压供给给继电器，为其提供吸合电压；主控IC1的输出脚输出低电平时MOS管Q1B的断开，形成断路，停止供电，节约能源。The working principle of the invention is explained below with reference to the specific input voltage: the input voltage of 9V-36V is input from the input end to the energy-saving circuit, and the voltage is divided by R5 and R3 in the voltage-stabilizing filter circuit, thereby ensuring that the voltage of the input main control IC1 is in its At the same time, the IC power management module is a MIC5200‐50YM model chip with an operating voltage range of ±65V, the input voltage of 9V-36V is within its working range, and the MIC5200‐50YM model chip will voltage. Converted to a stable 5V voltage input to the main control IC1, after the main control IC1 receives the voltage input from the voltage-stabilizing filter sampling circuit, the program programmed in IC1 calculates the time of the pull-in voltage according to the signal of the input voltage. The duty ratio of the sum of the time of the pull-in voltage and the time of the hold voltage, the master IC1 adjusts the on/off state of the master IC 1 according to the value of the duty ratio, and the IC1 "on" and "off" one cycle One cycle, the time of "on" is controlled by the program, the time of "on" is the "duty cycle", and the state of the main control IC1 is "on", which can provide the pull-in voltage for the relay. status. The higher the input voltage is, the smaller the duty cycle is, the lower the input voltage is, the larger the duty ratio is; the output pin of the main control IC1 controls the opening/closing of the MOS transistor Q1B, and the output pin of the main control IC1 outputs the high level MOS. The tube Q1B is closed, so that the branch connecting the MOS tube Q1A is grounded, and the output of the energy-saving circuit output terminal is supplied with the same voltage as the input voltage to the relay to provide the pull-in voltage; when the output pin of the main control IC1 outputs the low level, the MOS tube Q1B Disconnect, form an open circuit, stop power supply, and save energy.
例如输入端输入12V的电压，继电器的输出波形如图2所示，图2右侧图是左侧圆圈中部分波形的放大图，前端电压连续的时间为100ms，电压值为12V；后段的电压为脉冲式电压，维持电压为12V，脉冲宽度为10us，脉冲周期为50us，因此占空比为1/5，本发明的节能电路，通过主控IC1控制电路在前段100ms的 时间控制电路接通提供继电器的吸合电压，根据占空比控制节能电路的通\断的时间，与后段脉冲式维持电压的时间相同，提供10us的维持电压后断开节能电路，达到节能的目的。For example, the input terminal inputs 12V voltage, the output waveform of the relay is shown in Figure 2. The right side of Figure 2 is an enlarged view of the partial waveform in the left circle. The front end voltage is continuous for 100ms and the voltage value is 12V. The voltage is pulsed voltage, the sustain voltage is 12V, the pulse width is 10us, the pulse period is 50us, so the duty ratio is 1/5. The energy-saving circuit of the present invention passes the control IC1 of the main control IC1 in the previous stage for 100ms. The time control circuit is turned on to provide the pull-in voltage of the relay, and the time of the on/off of the energy-saving circuit is controlled according to the duty ratio, which is the same as the time of the pulse-type sustain voltage of the latter stage, and the power-saving circuit is disconnected after providing the sustain voltage of 10 us, thereby achieving energy saving. the goal of.
主控IC1(可视为一个开关)，输入端收集稳压滤波采样模块输出的电压转换值为2～5V，根据采样数据，主控IC1实现通\断来使电路产生通\断，主控IC1“通”与“断”的一个循环为50us，通过主控IC1控制“通”的时间，“通”的时间占比一个循环的时间即为“占空比”。以此在不需要维持电压的时候，断开节能电路，停止供电，实现了能耗的降低。The main control IC1 (can be regarded as a switch), the input terminal collects the voltage conversion value of the output of the voltage-stabilizing filter sampling module is 2~5V. According to the sampling data, the main control IC1 realizes the on/off to make the circuit generate and break, the main control The cycle of IC1 "on" and "off" is 50us, the time of "on" is controlled by the master IC1, and the time of "on" is the "duty" of one cycle. In this way, when the voltage is not required to be maintained, the energy-saving circuit is disconnected, the power supply is stopped, and the power consumption is reduced.
本发明一种节能的继电器根据继电器本体瞬时吸合后，所需的脉冲式的吸合电压的输出波形，计算出的占空比(脉冲宽度占一个脉冲周期的比例)通过主控IC1控制节能电路的通\断，控制节能电路按照占空比的时间实现通\断，即在继电器需要维持电压时接通电路，不需维持电压时断开电路，可以降低能耗，适用范围更广。The energy-saving relay of the invention is based on the output waveform of the required pulse-type pull-in voltage after the instantaneous connection of the relay body, and the calculated duty ratio (the ratio of the pulse width to one pulse period) is controlled by the main control IC1. The circuit is turned on and off, and the control energy-saving circuit realizes the on/off according to the duty cycle time, that is, the circuit is turned on when the relay needs to maintain the voltage, and the circuit is disconnected when the voltage is not maintained, which can reduce the energy consumption and has a wider application range.
最后应当说明的是，以上实施例仅用以说明本发明的技术方案，而非对本发明保护范围的限制，尽管参照较佳实施例对本发明作了详细地说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本发明技术方案的实质和范围。 It should be noted that the above embodiments are only intended to illustrate the technical solutions of the present invention, and are not intended to limit the scope of the present invention. Although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand The technical solutions of the present invention may be modified or equivalently substituted without departing from the spirit and scope of the technical solutions of the present invention.

Claims (5)

  1. 一种节能的继电器，包括继电器本体，其特征在于：还包括与继电器本体中的线圈串联的节能电路，所述的节能电路包括稳压滤波采样模块、IC电源管理模块、IC脉冲控制模块和MOS管开闭电路模块；An energy-saving relay, comprising a relay body, further comprising: an energy-saving circuit connected in series with a coil in the relay body, wherein the energy-saving circuit comprises a voltage-stabilizing filter sampling module, an IC power management module, an IC pulse control module, and a MOS Tube opening and closing circuit module;
    稳压滤波采样模块用于将输入电压调节至小于5V；The regulated filter sampling module is used to adjust the input voltage to less than 5V;
    IC电源管理模块用于将输入电压转换为稳定的5V电压提供给IC脉冲控制模块；The IC power management module is configured to convert the input voltage into a stable 5V voltage and provide the IC pulse control module;
    IC脉冲控制模块用于控制节能电路的通\断及通\断的时间；The IC pulse control module is used to control the on/off time and the on/off time of the energy-saving circuit;
    MOS管开闭电路模块：用于将输出电压转化为输入电压。MOS tube open and close circuit module: used to convert the output voltage into an input voltage.
  2. 根据权利要求1所述的一种节能的继电器，其特征在于：稳压滤波采样模块包括电感L1、电感L2、电容C7、二极管D8、MOS管Q2、电阻R5、电阻R3、电容C4、稳压二极管D5、二极管D4；The energy-saving relay according to claim 1, wherein the voltage-stabilizing filter sampling module comprises an inductor L1, an inductor L2, a capacitor C7, a diode D8, a MOS transistor Q2, a resistor R5, a resistor R3, a capacitor C4, and a voltage regulator. Diode D5, diode D4;
    IC电源管理模块包括贴片IC2、电容C5、电容C3、电容C2、电阻R7和电容C1；IC power management module includes chip IC2, capacitor C5, capacitor C3, capacitor C2, resistor R7 and capacitor C1;
    IC脉冲控制模块包括主控IC1、电阻R2；The IC pulse control module comprises a main control IC1 and a resistor R2;
    MOS管开闭电路模块包括二极管D2、二极管D6、电容C8、电阻R1、稳压二极管D3、电阻R4、电容C6、MOS管Q1A、MOS管Q1B；The MOS tube opening and closing circuit module comprises a diode D2, a diode D6, a capacitor C8, a resistor R1, a Zener diode D3, a resistor R4, a capacitor C6, a MOS transistor Q1A, and a MOS transistor Q1B;
    串联的电感L2和电容C7并联电感L1后连接至二极管D8的正极、二极管D4的正极；二极管D8的负极一方面连接至MOS管Q2的漏极，另一方面连接电阻R5的一端，R5的另一端连接并联的电阻R3、电容C4、稳压二极管D5及主控IC1，电阻R3、电容C4、稳压二极管D5的另一端同时接地；MOS管Q2的栅极连接至贴片IC2的输出端并同时连接电容C2的一端、电阻R7的一端以及主控IC1，电容C2的另一端接地，电阻R7的另一端经过电容C1后接地；贴片IC2的一个常闭接口和使能脚一方面连接至MOS管Q2的源极，另一方面连接至并联的电容C3和电容C5；二极管D4的负极连接至二极管D2的负极、二极管D6的正极及电容C8的一端，电容C8的另一端接地，稳压二极管D3、电阻R4、电容C6与MOS管Q1A的栅极并联后经过电阻R1连接至二极管D6的负极，二极管D2的正极连接至并联的稳压二极管D3的正极、电阻R4的另一端、电容C6的另一端、MOS管Q1A的源极以及MOS管Q1B的漏极；MOS管Q1B的栅极经过电阻R2后连接至主控IC1，MOS管Q1B的源极接地。 The inductor L2 and the capacitor C7 connected in series are connected to the anode of the diode D8 and the anode of the diode D4. The cathode of the diode D8 is connected to the drain of the MOS transistor Q2 on the one hand, and one end of the resistor R5 on the other hand, and the other end of the resistor R5. One end is connected with a parallel resistor R3, a capacitor C4, a Zener diode D5 and a main control IC1, and the other end of the resistor R3, the capacitor C4, and the Zener diode D5 are simultaneously grounded; the gate of the MOS transistor Q2 is connected to the output end of the patch IC2 and At the same time, one end of the capacitor C2, one end of the resistor R7 and the main control IC1, the other end of the capacitor C2 is grounded, and the other end of the resistor R7 is grounded through the capacitor C1; a normally closed interface and an enabling leg of the patch IC2 are connected to one side The source of the MOS transistor Q2 is connected to the parallel capacitor C3 and the capacitor C5 on the other hand; the cathode of the diode D4 is connected to the cathode of the diode D2, the anode of the diode D6, and one end of the capacitor C8, and the other end of the capacitor C8 is grounded, and the voltage is stabilized. Diode D3, resistor R4, capacitor C6 are connected in parallel with the gate of MOS transistor Q1A, and then connected to the cathode of diode D6 via resistor R1. The anode of diode D2 is connected to the anode of parallel Zener diode D3 and the other end of resistor R4. The other end of the drain capacitance C6, the source of the MOS transistor and the MOS transistor Q1A and Q1B; gate MOS transistor Q1B through the resistor R2 is connected to the master IC1, the source is grounded MOS transistor Q1B.
  3. 根据权利要求1所述的一种节能的继电器，其特征在于：输入电压为9V‐36V。An energy efficient relay according to claim 1 wherein the input voltage is 9V-36V.
  4. 根据权利要求2所述的一种节能的继电器，其特征在于：稳压二极管D3和稳压二极管D5均是BZX84C5V1型号的稳压二极管。An energy-saving relay according to claim 2, wherein the Zener diode D3 and the Zener diode D5 are voltage regulator diodes of the BZX84C5V1 type.
  5. 根据权利要求2所述的一种节能的继电器，其特征在于：贴片IC2是MIC5200‐50YM型号的IC芯片。 An energy-saving relay according to claim 2, wherein the patch IC 2 is an IC chip of the MIC 5200-50YM type.
PCT/CN2017/084753 2016-09-19 2017-05-17 Energy-saving relay WO2018049834A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201610830512.X 2016-09-19
CN201610830512.XA CN106229217B (en) 2016-09-19 2016-09-19 A kind of energy-saving relay

Publications (1)

Publication Number Publication Date
WO2018049834A1 true WO2018049834A1 (en) 2018-03-22

Family

ID=58077196

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2017/084753 WO2018049834A1 (en) 2016-09-19 2017-05-17 Energy-saving relay

Country Status (2)

Country Link
CN (1) CN106229217B (en)
WO (1) WO2018049834A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108735552A (en) * 2018-08-17 2018-11-02 广州金升阳科技有限公司 The coil control circuit of contactor
CN109036962A (en) * 2018-10-08 2018-12-18 上海西艾爱电子有限公司 A kind of energy-efficient driving circuit of relay coil

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106229217B (en) * 2016-09-19 2019-02-15 三友联众集团股份有限公司 A kind of energy-saving relay
CN107768196B (en) * 2017-11-30 2019-08-20 惠州市蓝微新源技术有限公司 A kind of control system reducing relay power consumption
CN109958566A (en) * 2019-04-20 2019-07-02 济南吉美乐电源技术有限公司 A kind of engine starting gear based on metal-oxide-semiconductor control
CN110874108B (en) * 2019-12-24 2024-06-11 乐星汽车技术（无锡）有限公司 Direct current voltage stabilizer for quick start-stop engine system
CN117080018B (en) * 2023-09-27 2024-01-19 德力西电气有限公司 Contactor coil control system

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102709117A (en) * 2011-03-28 2012-10-03 上海西艾爱电子有限公司 Energy-saving driving circuit for relay
CN103606486A (en) * 2013-11-21 2014-02-26 宁波市鄞州华谦电子有限公司 Relay drive circuit, relay and control method of relay drive circuit
CN203674082U (en) * 2013-12-20 2014-06-25 广东美的制冷设备有限公司 Relay control circuit
JP2014116197A (en) * 2012-12-10 2014-06-26 Auto Network Gijutsu Kenkyusho:Kk Relay Drive circuit
CN106229217A (en) * 2016-09-19 2016-12-14 东莞市三友联众电器有限公司 A kind of energy-saving relay
CN206076169U (en) * 2016-09-19 2017-04-05 东莞市三友联众电器有限公司 A kind of energy-saving relay

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7061352B2 (en) * 2004-01-26 2006-06-13 Tzo-Ing Lin Noise-free low-power consumption wide voltage range DC and AC contactor and remote telephone control system using the same
CN201570444U (en) * 2009-11-23 2010-09-01 天津市松正电动科技有限公司 Main contactor energy-saving circuit with wide-range voltage input
CN103424715A (en) * 2012-05-16 2013-12-04 海洋王（东莞）照明科技有限公司 Lamp testing circuit and device

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102709117A (en) * 2011-03-28 2012-10-03 上海西艾爱电子有限公司 Energy-saving driving circuit for relay
JP2014116197A (en) * 2012-12-10 2014-06-26 Auto Network Gijutsu Kenkyusho:Kk Relay Drive circuit
CN103606486A (en) * 2013-11-21 2014-02-26 宁波市鄞州华谦电子有限公司 Relay drive circuit, relay and control method of relay drive circuit
CN203674082U (en) * 2013-12-20 2014-06-25 广东美的制冷设备有限公司 Relay control circuit
CN106229217A (en) * 2016-09-19 2016-12-14 东莞市三友联众电器有限公司 A kind of energy-saving relay
CN206076169U (en) * 2016-09-19 2017-04-05 东莞市三友联众电器有限公司 A kind of energy-saving relay

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108735552A (en) * 2018-08-17 2018-11-02 广州金升阳科技有限公司 The coil control circuit of contactor
CN108735552B (en) * 2018-08-17 2024-01-16 广州金升阳科技有限公司 Coil control circuit of contactor
CN109036962A (en) * 2018-10-08 2018-12-18 上海西艾爱电子有限公司 A kind of energy-efficient driving circuit of relay coil
CN109036962B (en) * 2018-10-08 2024-02-09 上海西艾爱电子有限公司 Energy-saving driving circuit for relay coil

Also Published As

Publication number Publication date
CN106229217A (en) 2016-12-14
CN106229217B (en) 2019-02-15

Similar Documents

Publication Publication Date Title
WO2018049834A1 (en) Energy-saving relay
CN209419591U (en) Output driver
CN107993892B (en) Power supply control circuit suitable for electric locomotive contactor
CN105337485B (en) Circuit of power factor correction, LED driving circuit and lighting apparatus
CN203301611U (en) Direct-current switching circuit and switching power source
CN203660880U (en) Two-stage boost topological circuit
CN107172767A (en) A kind of New LED controls drive circuit
CN208241569U (en) The circuit quickly released is opened and powered off to a kind of powered on based on metal-oxide-semiconductor realization slow
CN103167664A (en) Light-emitting diode (LED) constant current drive circuit and LED lighting device
CN204118850U (en) A kind of flowmeter electric power system
CN203516140U (en) Energy-saving ventilating fan capable of automatically stopping running
CN210889171U (en) Solenoid valve type injector drive circuit system
CN202840921U (en) Novel high-voltage galvanostat and switching power supply provided therewith
CN209692655U (en) A kind of electric wheelchair control circuit of electromagnetic brake
CN110219758B (en) Solenoid valve type injector drive circuit system
CN213341709U (en) Power supply circuit and system based on temperature controller
CN212063831U (en) Automatic bypass circuit for power-on starting of flyback power supply
CN209606820U (en) A kind of electromagnetic valve energy-saving protection controller
CN204493048U (en) A kind of integrated form drive circuit of high pressure common rail injector
CN206076169U (en) A kind of energy-saving relay
CN206370774U (en) Non-isolated electric vehicle power sources change-over circuit
CN103051185A (en) Low-power-consumption controllable regulated power supply circuit
CN109346378B (en) A kind of controller of fast-speed direct current contactor
CN207924448U (en) A kind of intermittence electronic control switch
CN105697208A (en) Oil pump solenoid valve drive circuit based on current feedback

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 17850040

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 17850040

Country of ref document: EP

Kind code of ref document: A1