WO2020042473A1 - 驱动电路、开关控制电路及烹饪器具 - Google Patents

驱动电路、开关控制电路及烹饪器具 Download PDF

Info

Publication number
WO2020042473A1
WO2020042473A1 PCT/CN2018/122877 CN2018122877W WO2020042473A1 WO 2020042473 A1 WO2020042473 A1 WO 2020042473A1 CN 2018122877 W CN2018122877 W CN 2018122877W WO 2020042473 A1 WO2020042473 A1 WO 2020042473A1
Authority
WO
WIPO (PCT)
Prior art keywords
switch
branch
relay
driving
circuit according
Prior art date
Application number
PCT/CN2018/122877
Other languages
English (en)
French (fr)
Inventor
金胜昔
曾森
张秋俊
刘玉婷
汪春节
蔡晓龙
Original Assignee
珠海格力电器股份有限公司
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 珠海格力电器股份有限公司 filed Critical 珠海格力电器股份有限公司
Publication of WO2020042473A1 publication Critical patent/WO2020042473A1/zh

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
    • H01H47/002—Monitoring or fail-safe circuits
    • 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 present application relates to the field of circuit control, in particular to a driving circuit, a switch control circuit, and a cooking appliance.
  • the existing relay driving circuit is generally a driving circuit as shown in FIG. 1, which mainly uses an NPN transistor to control the PNP tube at the power supply side.
  • the PNP tube is short-circuited.
  • Even if there is no square wave drive signal, the coil of the relay will be closed, causing misoperation and poor safety performance.
  • one of the purposes of this application is to provide a driving circuit, a switch control circuit, and a cooking appliance to overcome the problems that a component in a circuit existing in the prior art can cause the relay to pull in and have poor safety.
  • the driving circuit includes a driving signal input terminal, a high voltage terminal, a low voltage terminal, and at least two switch branches, each of which is connected to the switch branch.
  • the driving signal input terminal is connected.
  • the at least two switch branches include a first switch branch and a second switch branch.
  • the first switch branch is connected to the high-voltage terminal through a first connection branch.
  • Two switch branches are connected to the low-voltage terminal, and the switch branches are connected through a second connection branch.
  • the switch branch and the first connection branch are provided with components, and the components can The current on the road is controlled, and the driving circuit is configured so that when any one of the components fails, the electrical component will not operate under the condition of inactive driving.
  • the components disposed on the first switch branch include a first triode and a first unidirectional element, and the first unidirectional element is disposed between the first triode and the first unidirectional element. Between the driving signal input terminals, the first unidirectional element only allows current to flow from the driving signal input terminals to the first triode.
  • the collector of the first triode is connected to the first connection branch, the emitter is connected to the second switch branch through the second connection branch, and the base is connected to The first unidirectional element is connected.
  • the components disposed on the second switch branch include a second transistor.
  • the collector of the second transistor is connected to the first switching branch through the second connection branch, the emitter is connected to the low-voltage terminal, and the base is connected to the driver.
  • the signal input is connected.
  • the component provided on the first connection branch includes a second unidirectional element, and the second unidirectional element only allows current to flow from the first switch branch to the high-voltage side. .
  • the electrical component includes a relay, and a coil of the relay is provided in parallel with the first connection branch.
  • a switch control circuit includes a relay and a drive circuit as described above, and the drive circuit is used to control a switch of the relay.
  • the relay is provided with one, the relay controls the switch of the live line and the neutral line at the same time, and the relay is controlled by one of the driving circuits; or
  • the relay is provided with two, the two relays respectively control the switch of the live line and the neutral line, and the two relays are controlled by one of the driving circuits; or
  • the relay is provided with two, the two relays respectively control the switch of the live line and the neutral line, and the two relays are respectively controlled by the two driving circuits.
  • the switch control circuit further includes a detection branch for detecting a switching state of the relay.
  • a photocoupler and a detection terminal are provided on the detection branch, and the photocoupler is connected to the live line and the neutral line.
  • this application uses the following technical solutions:
  • a cooking appliance includes the switch control circuit as described above.
  • the cooking appliance includes a rice cooker or an electric pressure cooker.
  • the switching branches are connected to the driving signal input terminal.
  • the electrical components will not operate under the condition of inactive driving, thereby ensuring the reliability of the circuit. , Especially for export products.
  • FIG. 1 shows a switch control circuit diagram provided by a specific embodiment of the present application.
  • This application provides a driving circuit and a switching control circuit having the driving circuit.
  • the driving circuit is used to drive the operation of electrical components.
  • the following application takes the electrical component as a relay to introduce specific embodiments of the driving circuit and the switching control circuit. Of course, it can be understood that it is also applicable to driving actions of other electrical parts.
  • the driving circuit includes a driving signal input terminal, a high-voltage terminal, a low-voltage terminal, and two switch branches, which are a first switch branch and a second switch branch, each of which is connected to a drive signal input.
  • the first switch branch is connected to the high-voltage terminal (for example, the power supply terminal shown in FIG. 1) through the first connection branch, the coil of the relay is arranged in parallel with the first connection branch, and the second switch branch is connected to the low voltage. Terminals (such as the ground terminal shown in Figure 1) are connected, the first switch branch and the second switch branch are connected through a second connection branch, and components are provided on the switch branch and the first connection branch The component can control the current on its branch.
  • the driving circuit is configured so that when any one of the components fails (understandably, failure here refers to making the circuit bidirectionally conductive).
  • failure here refers to making the circuit bidirectionally conductive.
  • active driving that is, when no driving signal is input to the driving signal input terminal
  • the electrical parts will not operate, that is, the coil of the relay will not be energized, so the relay will not be pulled in. This ensures the circuit Security and reliability, especially for export products.
  • the components provided on the first switch branch include a first transistor Q1 and a first unidirectional element.
  • the first unidirectional element is disposed between the first transistor Q1 and the driving signal input terminal.
  • the directional element only allows the circuit to flow from the driving signal input terminal to the direction of the first transistor Q1.
  • the first unidirectional element is, for example, the diode D3.
  • the collector of the first transistor Q1 is connected to the first connection branch, and then to The power terminal, the emitter is connected to the second switch branch through the second connection branch, the base is connected to the diode D3, and finally connected to the driving signal input terminal, so that the relay-driven square wave input from the driving signal input terminal can be input to the first
  • the base of a triode Q1 further turns on the first triode Q1.
  • the components provided on the second switch branch include the second transistor Q2, and the collector of the second transistor Q2 is connected to the first switch branch through the second connection branch, and then to the first transistor Q2.
  • the emitter, the emitter is connected to the ground terminal, and the base is connected to the driving signal input terminal, so that the relay-driven square wave input from the driving signal input terminal can be input to the base of the second transistor Q2, thereby making the second transistor
  • the tube Q2 is turned on.
  • first triode Q1 and the second triode Q2 may also be replaced by other components capable of achieving similar functions, such as a mos tube.
  • the components disposed on the first connection branch include a second unidirectional element, and the second unidirectional element only allows current to flow from the first switch branch to the high-voltage side.
  • the second unidirectional element is, for example, a diode D4.
  • the switch branch is not limited to the two first switch branches and the second switch branches described above, and may also be set to three or more, which are added to the first switch branch and the second switch.
  • the branches can be connected through the second connection branch.
  • the switch branch is set to three, it can make the electrical parts not occur in the case of non-active driving when any two of the components fail. action.
  • a rectifying and filtering circuit is provided between the driving signal input end and the first switching branch and the second switching branch, and includes a capacitor C1, a diode D1, a diode D2, and an electrolytic capacitor EC1, and the relay drives a square wave through the rectifying and filtering.
  • a fixed voltage is output after the circuit, and the voltage can drive the first transistor Q1 and the second transistor Q2 at the same time.
  • a voltage dividing resistor is provided on the first switch branch, that is, the resistor R4 shown in FIG. 1, and a voltage dividing resistor and a shunt circuit are provided on the second switch branch, that is, the resistor R1, the resistor R2, and Resistor R3.
  • resistor R1 and resistor R2 are used to drive the relay, and resistor R3 is used to discharge electrolytic capacitor EC1.
  • the present application also provides a switch control circuit.
  • the switch control circuit includes a relay and the foregoing drive circuit.
  • the drive circuit is used to control the switch of the relay.
  • the opening and closing of the wire can be set to one relay.
  • the relay controls the switching of the live wire and the neutral wire at the same time.
  • the relay is controlled by a driving circuit.
  • two relays are provided, which are relay K1 and relay K2 respectively.
  • the two relays respectively control the switch of the live line and the neutral line, wherein the relay K1 controls the switch of the live line and the relay K2 controls The neutral switch, relay K1 and relay K2 are controlled by a drive circuit.
  • the two relays are controlled by two driving circuits, that is, two driving circuits are provided, one of which drives the opening and closing of the relay K1, and the other driving circuit controls the opening and closing of the relay K2.
  • two driving circuits that is, two driving circuits are provided, one of which drives the opening and closing of the relay K1, and the other driving circuit controls the opening and closing of the relay K2.
  • the switch control circuit further includes a detection branch for detecting a switching state of the relay, and judging whether the relay is normally engaged according to the switching state of the relay, thereby further improving the safety of the circuit. That is, when the detection branch detects that the relay is mis-closing (that is, the relay is mis-closing when no driving signal is input to the driving signal input terminal), it is determined that the relay or the components on the driving circuit are damaged, so that Ensure that relevant personnel can find problems in a timely manner, and improve the safety and reliability of circuit use.
  • a detection branch for detecting a switching state of the relay, and judging whether the relay is normally engaged according to the switching state of the relay, thereby further improving the safety of the circuit. That is, when the detection branch detects that the relay is mis-closing (that is, the relay is mis-closing when no driving signal is input to the driving signal input terminal), it is determined that the relay or the components on the driving circuit are damaged, so that Ensure that relevant personnel can find problems in a timely manner,
  • a photocoupler U1 and a detection end are provided on the detection branch.
  • the detection end is, for example, a chip I / O port.
  • the photocoupler U1 is connected to the live line through the first branch and to the live line through the second branch.
  • the neutral line is connected, and the + 5V power terminal is connected through the third branch, and the chip I / O port is connected through the fourth branch.
  • the chip I / O port can detect a high level. If no driving signal is input to the driving signal input terminal at this time, it means that the relay is damaged or the driving circuit is damaged.
  • a voltage dividing resistor R5 is provided on the first branch
  • a voltage dividing resistor R7 and a shunt resistor R6 are disposed on the fourth branch, and the shunt resistor R6 is grounded.
  • the present application also provides a cooking appliance including the above-mentioned switch control circuit, thereby ensuring the safety and reliability of the use of the cooking appliance.
  • the cooking appliance may be, for example, an appliance that cooks food by electric heating, such as a rice cooker or an electric pressure cooker.

Landscapes

  • Electronic Switches (AREA)
  • Relay Circuits (AREA)

Abstract

本申请公开了一种驱动电路、开关控制电路及烹饪器具。驱动电路包括驱动信号输入端、高压端、低压端以及至少两个开关支路，每条开关支路均与驱动信号输入端相连，至少两个开关支路包括第一开关支路和第二开关支路，第一开关支路通过第一连接支路与高压端相连，第二开关支路与低压端相连，开关支路之间通过第二连接支路相连，开关支路上以及第一连接支路上均设置有元器件，元器件能够对其所在支路上的电流进行控制，驱动电路构造为，当元器件中的任意一个失效时，在非主动驱动的情况下，电气件不会发生动作，从而保证电路的可靠性，尤其适用于出口产品上。

Description

驱动电路、开关控制电路及烹饪器具
相关申请
本申请要求2018年08月30日申请的，申请号为201811005811.5，名称为“驱动电路、开关控制电路及烹饪器具”的中国专利申请的优先权，在此将其全文引入作为参考。
技术领域
本申请涉及电路控制领域，特别是一种驱动电路、开关控制电路及烹饪器具。
背景技术
现有的继电器驱动电路通常是如图1所示的驱动电路，其主要是用一个NPN三极管来控制电源端的PNP管，该电路中，若其中的一个三极管短路击穿，例如PNP管短路击穿，则即使没有方波驱动信号，继电器的线圈也会吸合，造成误操作，安全性能较差。
发明内容
有鉴于此，本申请的目的之一在于提供一种驱动电路、开关控制电路及烹饪器具，以克服现有技术中存在的电路中一个元器件损坏即可使得继电器吸合、安全性差的问题。
为达到上述目的，一方面，本申请采用如下技术方案：
一种驱动电路，所述驱动电路用于驱动电气件动作，所述驱动电路包括驱动信号输入端、高压端、低压端以及至少两个开关支路，每条所述开关支路均与所述驱动信号输入端相连，所述至少两个开关支路包括第一开关支路和第二开关支路，所述第一开关支路通过第一连接支路与所述高压端相连，所述第二开关支路与所述低压端相连，开关支路之间通过第二连接支路相连，所述开关支路上以及所述第一连接支路上均设置有元器件，元器件能够对其所在支路上的电流进行控制，所述驱动电路构造为，当所述元器件中的任意一个失效时，在非主动驱动的情况下，所述电气件不会发生动作。
在其中一个实施例中，设置在所述第一开关支路上的元器件包括第一三极管和第一单向元件，所述第一单向元件设置在所述第一三极管与所述驱动信号输入端之间，所述第一单向元件仅允许电流由所述驱动信号输入端向所述第一三极管方向流动。
在其中一个实施例中，所述第一三极管的集电极与所述第一连接支路相连，发射极通过所述第二连接支路与所述第二开关支路相连，基极与所述第一单向元件相连。
在其中一个实施例中，设置在所述第二开关支路上的元器件包括第二三极管。
在其中一个实施例中，所述第二三极管的集电极通过所述第二连接支路与所述第一开关支路相连，发射极与所述低压端相连，基极与所述驱动信号输入端相连。
在其中一个实施例中，设置在所述第一连接支路上的元器件包括第二单向元件，所述第二单向元件仅允许电流由所述第一开关支路向所述高压端的方向流动。
在其中一个实施例中，所述电气件包括继电器，所述继电器的线圈与所述第一连接支路并联设置。
另一方面，本申请采用如下技术方案：
一种开关控制电路，包括继电器和如上所述的驱动电路，所述驱动电路用于控制所述继电器的开关。
在其中一个实施例中，所述继电器设置有一个，所述继电器同时控制火线和零线的开关，所述继电器由一个所述驱动电路进行控制；或者，
所述继电器设置有两个，两个继电器分别控制火线和零线的开关，两个所述继电器由一个所述驱动电路进行控制；或者，
所述继电器设置有两个，两个继电器分别控制火线和零线的开关，两个所述继电器分别由两个所述驱动电路进行控制。
在其中一个实施例中，所述开关控制电路还包括检测支路，用于检测所述继电器的开关状态。
在其中一个实施例中，所述检测支路上设置有光电耦合器和检测端，所述光电耦合器与所述火线以及所述零线相连。
再一方面，本申请采用如下技术方案：
一种烹饪器具，包括如上所述的开关控制电路。
在其中一个实施例中，所述烹饪器具包括电饭煲或电压力锅。
本申请提供的驱动电路中，开关支路均与驱动信号输入端相连，当元器件中的任意一个失效时，在非主动驱动的情况下，电气件不会发生动作，从而保证电路的可靠性，尤其适用于出口产品上。
附图说明
通过以下参照附图对本申请实施例的描述，本申请的上述以及其它目的、特征和优点将更为清楚，在附图中：
图1示出本申请具体实施方式提供的开关控制电路图。
具体实施方式
以下基于实施例对本申请进行描述，但是本申请并不仅仅限于这些实施例。为了避免混淆本申请的实质，公知的方法、过程、流程、元件并没有详细叙述。
此外，本领域普通技术人员应当理解，在此提供的附图都是为了说明的目的，并且附图不一定是按比例绘制的。
除非上下文明确要求，否则整个说明书和权利要求书中的“包括”、“包含”等类似词语应当解释为包含的含义而不是排他或穷举的含义；也就是说，是“包括但不限于”的含义。
在本申请的描述中，需要理解的是，术语“第一”、“第二”等仅用于描述目的，而不能理解为指示或暗示相对重要性。此外，在本申请的描述中，除非另有说明，“多个”的含义是两个或两个以上。
本申请提供了一种驱动电路以及具有该驱动电路的开关控制电路，驱动电路用于驱动电气件动作，下面本申请主要以电气件为继电器为例介绍驱动电路以及开关控制电路的具体实施例，当然，可以理解的是，其也适用于对其他电气件的驱动动作。
如图1所示，驱动电路包括驱动信号输入端、高压端、低压端以及两个开关支路，分别为第一开关支路和第二开关支路，每条开关支路均与驱动信号输入端相连，第一开关支路通过第一连接支路与高压端(例如为图1中所示的电源端)相连，继电器的线圈与第一连接支路并联设置，第二开关支路与低压端(例如为图1中所示的接地端)相连，第一开关支路和第二开关支路之间通过第二连接支路相连，开关支路上以及第一连接支路上均设置有元器件，元器件能够对其所在支路上的电流进行控制，驱动电路构造为，当元器件中的任意一个失效(可以理解的是，此处的失效指的是使得电路双向导通)时，在非主动驱动的情况下(即在驱动信号输入端没有输入驱动信号的情况下)，电气件不会发生动作，即继电器的线圈不会通电，因此继电器不会吸合，如此，保证了电路的安全可靠性，尤其适用于出口产品上。
其中，设置在第一开关支路上的元器件包括第一三极管Q1和第一单向元件，第一单向元件设置在第一三极管Q1与驱动信号输入端之间，第一单向元件仅允许电路由驱动信号输入端向第一三极管Q1方向流动，第一单向元件例如为二极管D3，第一三极管Q1的集电极与第一连接支路相连，进而连至电源端，发射极通过第二连接支路与第二开关支路相连，基极与二极管D3相连，并最终连至驱动信号输入端，使得驱动信号输入端输入的继电器驱动方波能够输入至第一三极管Q1的基极，进而使得第一三极管Q1导通。
设置在第二开关支路上的元器件包括第二三极管Q2，第二三极管Q2的集电极通过第 二连接支路与第一开关支路相连，进而连至第一三极管Q2的发射极，发射极与接地端相连，基极与驱动信号输入端相连，使得驱动信号输入端输入的继电器驱动方波能够输入至第二三极管Q2的基极，进而使得第二三极管Q2导通。
可以理解的是，第一三极管Q1和第二三极管Q2也可以由mos管等其他能够实现类似功能的元器件替代。
设置在第一连接支路上的元器件包括第二单向元件，第二单向元件仅允许电流由第一开关支路向高压端的方向流动，第二单向元件例如为二极管D4。
如此，当其中任一元器件例如第一三极管Q1失效(例如发生短路击穿)时，继电器上的线圈也不会通电流，因此继电器不会吸合，从而保证了驱动电路的使用安全。
当然，可以理解的是，开关支路不局限于设置上述的第一开关支路、第二开关支路两条，也可以设置为三条以上，将其增加在第一开关支路和第二开关支路之间并通过第二连接支路相连即可，当开关支路设置为三条时，可以使得当元器件中的任意两个失效时，在非主动驱动的情况下，电气件不会发生动作。
进一步地，在驱动信号输入端与第一开关支路、第二开关支路之间设置有整流滤波电路，包括电容C1、二极管D1、二极管D2和电解电容EC1，继电器驱动方波经过该整流滤波电路后输出一个固定的电压，该电压可以同时驱动第一三极管Q1和第二三极管Q2。
进一步地，第一开关支路上设置有分压电阻，即图1中所示的电阻R4，第二开关支路上设置有分压电阻和分流电路，即图中所示的电阻R1、电阻R2和电阻R3，其中，电阻R1和电阻R2用来驱动继电器，电阻R3用于给电解电容EC1放电。
进一步地，本申请还提供了一种开关控制电路，如图1所示，该开关控制电路包括继电器和上述的驱动电路，驱动电路用于控制继电器的开关，继电器例如可以控制电器的火线和零线的开闭，继电器可以设置为一个，此时继电器同时控制火线和零线的开关，继电器由一个驱动电路进行控制。
在一实施例中，如图1所示，继电器设置有两个，分别为继电器K1和继电器K2，两个继电器分别控制火线和零线的开关，其中，继电器K1控制火线的开关，继电器K2控制零线的开关，继电器K1和继电器K2由一个驱动电路进行控制。
进一步地，在一实施例中，两个继电器分别由两个驱动电路进行控制，即，设置两个驱动电路，其中一个驱动电路控制继电器K1的开闭，另一个驱动电路控制继电器K2的开闭，如此，即使一个驱动电路上的两个元器件均失效，例如一个驱动电路上的第一三极管Q1和第二三极管Q2均发生了短路击穿，此时只有与该驱动电路相连的继电器闭合，也就是说只有火线或者零线一条线接通，而另一条线还是断开的，这样也无法形成回路，达到 了双容错的效果。
进一步地，开关控制电路还包括检测支路，用于检测继电器的开关状态，根据继电器的开关状态来判断继电器是否正常吸合，进一步提高电路的安全性。即，当检测支路检测到继电器发生误吸合(即在驱动信号输入端未输入驱动信号的情况下继电器发生误吸合)时，判定继电器或者是驱动电路上的元器件发生了损坏，从而保证相关人员能够及时发现问题，提高电路的使用安全可靠性。
在一个具体的实施例中，检测支路上设置有光电耦合器U1和检测端，检测端例如为芯片I/O口，光电耦合器U1经第一支路与火线相连，经第二支路与零线相连，经第三支路与+5V电源端相连，经第四支路与芯片I/O口相连，如此，当火线和零线同时接通后，光电耦合器U1的控制端导通，此时芯片I/O口能够检测到高电平，若此时驱动信号输入端未输入驱动信号，则说明继电器发生了损坏或者是驱动电路发生了损坏。其中，第一支路上设置有分压电阻R5，第四支路上设置有分压电阻R7和分流电阻R6，分流电阻R6接地。
进一步地，本申请还提供了一种烹饪器具，包括上述的开关控制电路，从而保证了烹饪器具的使用安全可靠性。烹饪器具例如可以为电饭煲、电压力锅等通过电加热的方式对食物进行烹饪的器具。
本领域的技术人员容易理解的是，在不冲突的前提下，上述各优选方案可以自由地组合、叠加。
应当理解，上述的实施方式仅是示例性的，而非限制性的，在不偏离本申请的基本原理的情况下，本领域的技术人员可以针对上述细节做出的各种明显的或等同的修改或替换，都将包含于本申请的权利要求范围内。

Claims (13)

  1. 一种驱动电路，用于驱动电气件动作，其特征在于，所述驱动电路包括驱动信号输入端、高压端、低压端以及至少两个开关支路，每条所述开关支路均与所述驱动信号输入端相连，所述至少两个开关支路包括第一开关支路和第二开关支路，所述第一开关支路通过第一连接支路与所述高压端相连，所述第二开关支路与所述低压端相连，所述至少两个开关支路之间通过第二连接支路相连，所述至少两个开关支路上以及所述第一连接支路上均设置有元器件，所述元器件能够对其所在支路上的电流进行控制，所述驱动电路构造为，当所述元器件中的任意一个失效时，在非主动驱动的情况下，所述电气件不会发生动作。
  2. 根据权利要求1所述的驱动电路，其特征在于，设置在所述第一开关支路上的元器件包括第一三极管和第一单向元件，所述第一单向元件设置在所述第一三极管与所述驱动信号输入端之间，所述第一单向元件仅允许电流由所述驱动信号输入端向所述第一三极管方向流动。
  3. 根据权利要求2所述的驱动电路，其特征在于，所述第一三极管的集电极与所述第一连接支路相连，发射极通过所述第二连接支路与所述第二开关支路相连，基极与所述第一单向元件相连。
  4. 根据权利要求1所述的驱动电路，其特征在于，设置在所述第二开关支路上的元器件包括第二三极管。
  5. 根据权利要求4所述的驱动电路，其特征在于，所述第二三极管的集电极通过所述第二连接支路与所述第一开关支路相连，发射极与所述低压端相连，基极与所述驱动信号输入端相连。
  6. 根据权利要求1所述的驱动电路，其特征在于，设置在所述第一连接支路上的元器件包括第二单向元件，所述第二单向元件仅允许电流由所述第一开关支路向所述高压端的方向流动。
  7. 根据权利要求1至6任一项所述的驱动电路，其特征在于，所述电气件包括继电器，所述继电器的线圈与所述第一连接支路并联设置。
  8. 一种开关控制电路，其特征在于，包括继电器和如权利要求1至7任一项所述的驱动电路，所述驱动电路用于控制所述继电器的开关。
  9. 根据权利要求8所述的开关控制电路，其特征在于，所述继电器设置有一个，所述继电器同时控制火线和零线的开关，所述继电器由一个所述驱动电路进行控制；或者，
    所述继电器设置有两个，两个所述继电器分别控制火线和零线的开关，两个所述继电器由一个所述驱动电路进行控制；或者，
    所述继电器设置有两个，两个所述继电器分别控制火线和零线的开关，两个所述继电器分别由两个所述驱动电路进行控制。
  10. 根据权利要求9所述的开关控制电路，其特征在于，所述开关控制电路还包括检测支路，用于检测所述继电器的开关状态。
  11. 根据权利要求10所述的开关控制电路，其特征在于，所述检测支路上设置有光电耦合器和检测端，所述光电耦合器与所述火线以及所述零线相连。
  12. 一种烹饪器具，其特征在于，包括如权利要求8至11任一项所述的开关控制电路。
  13. 根据权利要求12所述的烹饪器具，其特征在于，所述烹饪器具包括电饭煲或电压力锅。
PCT/CN2018/122877 2018-08-30 2018-12-21 驱动电路、开关控制电路及烹饪器具 WO2020042473A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201811005811.5 2018-08-30
CN201811005811.5A CN109065409A (zh) 2018-08-30 2018-08-30 驱动电路、开关控制电路及烹饪器具

Publications (1)

Publication Number Publication Date
WO2020042473A1 true WO2020042473A1 (zh) 2020-03-05

Family

ID=64758068

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2018/122877 WO2020042473A1 (zh) 2018-08-30 2018-12-21 驱动电路、开关控制电路及烹饪器具

Country Status (2)

Country Link
CN (1) CN109065409A (zh)
WO (1) WO2020042473A1 (zh)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201629560U (zh) * 2008-12-05 2010-11-10 刘圣平 高可靠防失控的复合式温度控制电路
CN207352377U (zh) * 2017-10-23 2018-05-11 九阳股份有限公司 一种烹饪器具的抗干扰电路和烹饪器具

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2816286B2 (ja) * 1993-01-19 1998-10-27 株式会社東海理化電機製作所 リレー制御回路
ES2235614B1 (es) * 2003-07-31 2006-10-16 Fagor, S. Coop. Circuito de control seguro ante fallos para aparatos electrodomesticos.
CN202996719U (zh) * 2012-11-13 2013-06-12 佛山市顺德区瑞德电子实业有限公司 一种带双保护回路的继电器驱动电路
CN104110800B (zh) * 2013-06-26 2017-04-05 广东美的制冷设备有限公司 阻性负载的开关控制方法、系统及空调器
CN205752025U (zh) * 2016-04-01 2016-11-30 浙江苏泊尔家电制造有限公司 继电器驱动电路及继电器电路
CN207381964U (zh) * 2017-10-18 2018-05-18 深圳市赛源电气技术有限公司 电力电容器无触点开关的保护装置
CN208834987U (zh) * 2018-08-30 2019-05-07 珠海格力电器股份有限公司 驱动电路、开关控制电路及烹饪器具

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201629560U (zh) * 2008-12-05 2010-11-10 刘圣平 高可靠防失控的复合式温度控制电路
CN207352377U (zh) * 2017-10-23 2018-05-11 九阳股份有限公司 一种烹饪器具的抗干扰电路和烹饪器具

Also Published As

Publication number Publication date
CN109065409A (zh) 2018-12-21

Similar Documents

Publication Publication Date Title
JP6764539B2 (ja) スマート安全リレー及びその応用回路
US7551412B2 (en) Wiring fault correction circuit
MX2013001068A (es) Circuito controlador que incluye un convertidor de energia de modo de conmutacion y un cierre automatico que usa el mismo.
US11413965B2 (en) High voltage interlock circuit and detection method thereof
CN109510176A (zh) 一种智能功率模块驱动保护电路
CN216118442U (zh) 多档负载驱动与检测电路及设备
CN106020004B (zh) 一种电源上断电时序控制电路及控制方法
WO2020042473A1 (zh) 驱动电路、开关控制电路及烹饪器具
CN104979851B (zh) 一种开关电路及其控制方法
US20180110107A1 (en) Isolated driver
CN111668803B (zh) 一种加热系统的三级安全保护电路
CN203709802U (zh) 一种电压力锅负载驱动保护电路
CN108539968A (zh) 开关电源及其控制方法
CN208834987U (zh) 驱动电路、开关控制电路及烹饪器具
CN110416009B (zh) 无电弧长寿命的继电器开关电路及控制器
JP2006333458A (ja) 故障応答機能を備えた、パワー半導体スイッチを駆動するための回路装置、並びにそれに付属する方法。
CN211266558U (zh) 一种开关磁阻电机驱动器锁存故障信号及复位故障信号电路
KR20160030873A (ko) 동적 고에너지 스위치
US20190334518A1 (en) Universal semiconductor switch
CA2931067A1 (en) Electronically commutated motor
JP6469910B1 (ja) 過電圧保護回路
CN209823391U (zh) 一种保护电路
US20240044998A1 (en) Leakage current detection and interruption device for power cord and related electrical connectors and electrical appliances
CN107027207A (zh) Igbt保护电路和电磁炉
CN209882114U (zh) 一种加热保护电路和加热装置

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: 18931823

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: 18931823

Country of ref document: EP

Kind code of ref document: A1