CN211925953U - Low-power control systems and air conditioners - Google Patents

Abstract

The utility model provides a low power consumption control system and an air conditioner, which relate to the technical field of power supply circuits. The internal unit of the system includes a first control unit, a first power supply unit, a first switch unit and a first communication circuit, the external unit includes a second control unit, a second power supply unit, a second switch unit and a wake-up circuit, the first control unit The unit is electrically connected to the first switch unit and the first power supply unit respectively, the first power supply unit, the first switch unit, the first communication circuit, the wake-up circuit, the second power supply unit and the second control unit are electrically connected in sequence, and the first power supply unit , the first switch unit, the second switch unit and the second power supply unit are electrically connected in sequence. By arranging the first switch unit and the second switch unit, the external unit cannot obtain power in the standby state, thereby effectively reducing the power consumption of the external unit in the standby state and saving power.

Description

Low-power control systems and air conditioners

technical field

The utility model relates to the technical field of power supply circuits, in particular to a low power consumption control system and an air conditioner.

Background technique

With the improvement of people's living standards, the utilization rate of air conditioners is getting higher and higher, and the national energy efficiency standards are getting higher and higher, so the standby power consumption of air conditioners has attracted more and more attention.

In the prior art, the air conditioner usually uses the communication line to directly lead the AC power from the indoor unit to the outdoor unit to wake up the outdoor unit; Power-on state, high energy consumption.

Utility model content

The problems solved by the utility model are how to reduce the power consumption during standby and how to wake up the external unit when the air conditioner needs to work.

In order to solve the above problems, in the first aspect, the present invention provides a low power consumption control system, characterized in that the low power consumption control system includes an internal unit and an external unit, and the internal unit includes a first control unit, a first power supply unit, a first switch unit and a first communication circuit, the external unit includes a second control unit, a second power supply unit, a second switch unit and a wake-up circuit, the first control unit and the first switch The unit and the first power supply unit are respectively electrically connected, the first power supply unit, the first switch unit, the first communication circuit, the wake-up circuit, the second power supply unit and the second control The units are electrically connected in sequence, the first power supply unit, the first switch unit, the second switch unit and the second power supply unit are electrically connected in sequence, the second control unit and the second switch unit are electrically connected connect;

The first control unit is configured to control the first switch unit to close when receiving a power-on instruction;

The first power supply unit is configured to transmit a power supply signal to the wake-up circuit through the first switch unit and the first communication circuit after the first switch unit is closed;

the wake-up circuit for closing in response to the power signal;

The first power supply unit is further configured to supply power to the second power supply unit through the first switch unit, the first communication circuit and the wake-up circuit to wake up the second control unit after the wake-up circuit is closed unit;

The second control unit is used to control the second switch unit to close after being woken up.

It is understandable that the internal unit cannot be powered on in the standby state. At this time, since the first switch unit and the second switch unit have not received the control signal, they are in a disconnected state, so that the power signal of the first power supply unit cannot be normally transmitted to the second power supply unit. Two power supply units, so as to effectively reduce the power consumption of the external machine in the standby state and save power.

Further, the wake-up circuit includes a first switch tube, a second switch tube, a first switch, a thermistor, a first resistor, a second resistor and a third resistor, the first communication circuit and the first switch The base of the first switch is electrically connected to the base of the first switch, the emitter of the first switch is electrically connected to the N terminal of the first power supply unit through the first switch, and the emitter of the first switch passes through the first resistor is electrically connected to the collector of the first switch tube, the collector of the first switch tube is electrically connected to the gate of the second switch tube through the second resistor, and the drain of the second switch tube It is electrically connected between the second switch unit and the second power supply unit, the L end of the first power supply unit is electrically connected to the source of the second switch tube through the thermistor, and the first power supply unit is electrically connected to the source of the second switch tube. The sources of the two switches are electrically connected between the second resistor and the collectors of the first switches through the third resistor.

Further, the wake-up circuit further includes a first diode and a fourth resistor, and the first communication circuit is connected in series with the first diode and the fourth resistor and the base of the first switch tube. The anode of the first diode is electrically connected to the first communication circuit, and the cathode of the first diode is electrically connected to the fourth resistor.

Understandably, since the first diode is reversely connected to the second communication circuit, the first diode can effectively prevent the current inside the wake-up circuit from affecting the second communication circuit and ensure the stability of the second communication circuit.

Further, the wake-up circuit further includes a second diode, the second diode is connected in series between the thermistor and the source of the second switch tube, the second diode is The anode is electrically connected to the thermistor, and the cathode of the second diode is electrically connected to the source of the second switch tube.

Understandably, the second diode is reversely connected to the first power supply unit, which can prevent the wake-up circuit from affecting the first power supply unit when a fault (eg, short circuit) occurs, thereby affecting the power supply.

Further, the external unit further includes a second communication circuit, one end of the second communication circuit is electrically connected between the first communication circuit and the base of the first switch tube, the second communication circuit The other end is electrically connected to the N end of the first power supply unit;

The second control unit is further configured to control the first switch to be turned off after being woken up, so as to make the second communication circuit work normally.

Further, the external unit further includes a first voltage regulator tube, the anode of the first voltage regulator tube is electrically connected to the N terminal of the first power supply unit, and the cathode of the first voltage regulator tube is electrically connected to the first voltage regulator tube. between the first communication circuit and the base of the first switch tube.

Further, the internal unit further includes a voltage stabilization unit, one end of the voltage stabilization unit is electrically connected to the first power supply unit, and the other end of the voltage stabilization unit is connected to the first power supply unit through the first switch unit. The L terminal of the power supply unit is electrically connected.

It can be understood that by setting the voltage regulator unit, when the first switch unit is closed, the normal voltage drop between the N terminal of the first power supply unit and the L terminal of the first power supply unit can be ensured, and the failure of output due to short circuit can be avoided. The problem of the power signal to the external unit.

Further, the voltage regulator unit includes a second voltage regulator tube, a first capacitor and a fifth resistor, the second regulator tube is connected in parallel with the first capacitor and the fifth resistor, and the second voltage regulator tube is connected in parallel with the first capacitor and the fifth resistor. The anode of the tube is electrically connected to the N terminal of the first power supply unit, and the cathode of the second voltage regulator tube is electrically connected to the L terminal of the first power supply unit through the first switch unit.

Further, the low power consumption control system includes a plurality of internal units, the external unit includes a plurality of second communication circuits, and the plurality of the inner units correspond to the plurality of the second communication circuits one-to-one, and each The first communication circuit of the internal unit is electrically connected with the corresponding second communication circuit.

In the second aspect, the present invention also provides another low power consumption control system, the low power consumption control system includes an internal unit and an external unit, and the internal unit includes a first control unit, a first power supply unit and a first a switch unit, the external unit includes a second control unit, a second power supply unit and a second switch unit, the first control unit is electrically connected to the first switch unit and the first power supply unit, respectively, and the first control unit is electrically connected to the first switch unit and the first power supply unit, respectively. A power supply unit, the first switch unit, the second switch unit, and the second power supply unit are electrically connected in sequence, the first switch unit is electrically connected to the second power supply unit, and the second switch unit is electrically connected to the second power supply unit. The two control units are electrically connected;

The first control unit is configured to control the first switch unit to close when receiving a power-on instruction;

The first power supply unit is further configured to supply power to the second power supply unit through the first switch unit after the first switch unit is closed to wake up the second control unit;

The second control unit is used to control the second switch unit to close after being woken up.

In a third aspect, the present invention further provides an air conditioner, the air conditioner includes the low power consumption control system in any one of the above embodiments.

Description of drawings

1 is a block diagram of a circuit structure of a low power consumption control system provided by a first embodiment of the present invention;

2 is a circuit diagram of a low power consumption control system provided by the first embodiment of the present invention;

3 is a circuit diagram of a low power consumption control system provided by a second embodiment of the present invention;

4 is a block diagram of a circuit structure of a low power consumption control system provided by a third embodiment of the present invention;

FIG. 5 is a circuit diagram of a low power consumption control system provided by a third embodiment of the present invention.

Icon: 100-low power consumption control system; 110-internal machine; 111-first control unit; 112-first power supply unit; 113-first switch unit; 114-first communication circuit; 115-voltage regulator unit; 120 -Outdoor unit; 121-Second control unit; 122-Second power supply unit; 123-Second switch unit; 124-Wake-up circuit; 125-Second communication circuit; K1-SPST switch; ZD2-Second voltage regulator tube; C1-first capacitor; R5-fifth resistor; D3-third diode; R6-sixth resistor; D1-first diode; D2-second diode; ZD1-first voltage regulator tube; R1-first resistor; R2-second resistor; R3-third resistor; R4-fourth resistor; BJT1-first switch tube; MOS1-second switch tube; Q1-first switch; PTC-thermal resistance.

Detailed ways

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. . The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations.

Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the invention as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the present invention.

Generally, the power supply mode of the air conditioner can be divided into the power supply of the internal unit and the power supply of the external unit. The main control board of the air conditioner powered by the external unit is in the outdoor unit, and the indoor unit only includes a relatively simple circuit board of the internal unit, and the external unit Most of the power supply uses 380V three-phase electricity; for the air conditioner powered by the indoor unit, its main control board is installed in the indoor unit.

In the prior art, the external unit wake-up power used by the air conditioner usually uses a communication line to directly lead the AC power from the indoor unit to the outdoor unit. However, now users have higher and higher requirements for the energy consumption of air conditioners, and various manufacturers are also trying to reduce the standby power consumption of air conditioners. Therefore, the present invention aims to provide a low power consumption control system and an air conditioner capable of saving energy consumption to meet the needs of users.

first embodiment

The embodiment of the present invention provides a low power consumption control system 100, which is mainly applied to an air conditioner powered by an external machine. Please refer to FIG. 1 , which is a block diagram of a circuit structure of a low power consumption control system 100 provided by an embodiment of the present invention. The low power consumption control system 100 includes an internal unit 110 including a first control unit 111 , a first power supply unit 112 , a voltage regulator unit 115 , a first switch unit 113 and a first communication circuit 114 , and the external unit 120 includes a second control unit 121 , a second power supply unit 122 , a second switch unit 123 , a second communication circuit 125 and a wake-up circuit 124 .

The first control unit 111 is electrically connected to the first switch unit 113 and the first power supply unit 112, respectively. The first power supply unit 112, the first switch unit 113, the first communication circuit 114, the wake-up circuit 124, and the second power supply unit 122 and the second control unit 121 are electrically connected in sequence, the first power supply unit 112, the first switch unit 113, the second switch unit 123 and the second power supply unit 122 are electrically connected in sequence, the second communication circuit 125 and the first communication circuit 114 and wake-up The circuits 124 are respectively electrically connected, one end of the voltage stabilization unit 115 is electrically connected to the first power supply unit 112, the other end of the voltage stabilization unit 115 is electrically connected to the first switch unit 113, and the second communication circuit 125 is electrically connected to the first communication circuit 114 and wake-up The circuits 124 are all electrically connected, and the second control unit 121 is electrically connected to the second switch unit 123 .

The first power supply unit 112 is electrically connected to the first control unit 111 for providing the first control unit 111 with a working voltage. In an optional implementation manner, the first power supply unit 112 includes a power supply, a rectifier bridge and a transformer, and the power supply, the rectifier bridge and the transformer are electrically connected in sequence. Among them, the rectifier bridge is used to convert the alternating current input by the power supply into direct current, and the transformer is used to adjust the voltage value output by the rectifier bridge to other units.

It should be noted that the output terminals included in the first power supply unit 112 include an N terminal and an L terminal; wherein, the N terminal is the neutral wire interface of the first power supply unit 112, and the L terminal is the live wire interface of the first power supply unit 112. And when the live wire and the neutral wire form a loop, the first power supply unit 112 can normally output the power signal.

The first switch unit 113 is used for switching states under the control of the first control unit 111 . It should be noted that the first switch unit 113 may be a single-pole single-throw switch, a high-power triode, a thyristor, a solid-state relay, an insulated gate bipolar transistor (IGBT), a MOS transistor, and the like.

Please refer to FIG. 2 , which is a circuit diagram of the low power consumption control system 100 provided by the present invention. FIG. 2 takes the first switch unit 113 as a single-pole single-throw switch K1 as an example to describe the electrical connection relationship between the first switch unit 113 and other units in detail. The movable terminal of the SPST switch K1 is electrically connected to the L terminal of the first power supply unit 112 , and the fixed terminal of the SPST switch K1 is electrically connected to the N terminal of the first power supply unit 112 through the voltage stabilization unit 115 . Therefore, when the first switch unit 113 is closed, the N terminal of the first power supply unit 112 is electrically connected to the L terminal of the first power supply unit 112, and the first power supply unit 112 can normally output the power signal; when the first switch unit 113 is disconnected At the time, the N terminal of the first power supply unit 112 is electrically disconnected from the L terminal of the first power supply unit 112, and the first power supply unit 112 cannot normally output a power supply signal.

One end of the voltage stabilization unit is connected to the N end of the first power supply unit 112 , and the other end of the voltage stabilization unit is electrically connected to the first switch unit 113 . Understandably, when the first switch unit 113 is closed, the N terminal of the first power supply unit 112 is electrically connected to the L terminal of the first power supply unit 112 through the voltage regulator unit.

Please continue to refer to FIG. 2, the voltage regulator unit 115 includes a second voltage regulator ZD2, a first capacitor C1 and a fifth resistor R5, the second voltage regulator ZD2 is connected in parallel with the first capacitor C1 and the fifth resistor R5, and the second voltage regulator The anode of the tube ZD2 is electrically connected to the N terminal of the first power supply unit 112 , and the cathode of the second voltage regulator ZD2 is electrically connected to the L terminal of the first power supply unit 112 through the first switching unit 113 .

It can be understood that, by setting the voltage regulator unit 115, when the first switch unit 113 is closed, a normal voltage drop between the N terminal of the first power supply unit 112 and the L terminal of the first power supply unit 112 can be ensured to avoid short circuit. As a result, the problem of not being able to output the power signal to the external unit 120 is caused.

The first communication circuit 114 is used to receive the operation data transmitted by the external unit 120 and transmit the control signal and operation data of the internal unit 110 to the external unit 120 . In this embodiment, the first communication circuit 114 can be used to transmit the power signal transmitted by the first power supply unit 112 to the wake-up circuit 124 when the first switch unit 113 is closed.

Please continue to refer to FIG. 2 , the internal unit 110 further includes a third diode D3 and a sixth resistor R6, and the first communication circuit 114 is connected in series with the third diode D3 and the sixth resistor R6 to the second communication circuit 125 and the wake-up circuit 124 is electrically connected, and the anode of the third diode D3 is electrically connected to the first communication circuit 114 , and the cathode of the third diode D3 is electrically connected to the wake-up circuit 124 and the second communication circuit 125 .

Understandably, since the third diode D3 is reversely connected to the external unit 120, when the external unit 120 is short-circuited and the current in the loop is too large, the third diode D3 can effectively avoid the influence of the external unit 120 failure. to the circuit of the internal unit 110.

The first control unit 111 is configured to control the first switch unit 113 to close when receiving a power-on command. Understandably, the power-on instruction may be generated by the user by operating the remote control. That is, when the low power consumption control system 100 is in a standby state and the first control unit 111 does not receive a power-on command, the first switch unit 113 is in an off state, and the first power supply unit 112 cannot output a power signal at this time; After the first control unit 111 receives the power-on command, it controls the first switch unit 113 to close, so that the first power unit 112 can normally transmit the power signal to the wake-up circuit 124 through the first communication circuit 114 .

The second communication circuit 125 is electrically connected to the wake-up circuit 124 and the first communication circuit 114 , and is used for receiving control signals and operating data transmitted by the internal unit 110 and transmitting the operating data of the external unit 120 to the internal unit 110 .

The wake-up circuit 124 is used for closing in response to the power signal transmitted by the first power supply unit 112 . Meanwhile, the wake-up circuit 124 can also be turned off under the control of the second control unit 121 .

Understandably, after the wake-up circuit 124 is closed, the first power supply unit 112 is connected to the second power supply unit 122, so that the first power supply unit 112 supplies power to the second power supply unit 122 through the first communication circuit 114 and the wake-up circuit 124 in turn, so that The second power unit 122 supplies power to the second control unit 121 to wake up the second control unit 121 .

Please continue to refer to FIG. 2, the wake-up circuit 124 includes a first switch BJT1, a second switch MOS1, a first switch Q1, a thermistor PTC, a first resistor R1, a second resistor R2, and a third resistor R3. The first communication The circuit 114 is electrically connected to the base of the first switching transistor BJT1, the emitter of the first switching transistor BJT1 is electrically connected to the N terminal of the first power supply unit 112 through the first switch Q1, and the emitter of the first switching transistor BJT1 is electrically connected to the N terminal of the first power supply unit 112 through the first switch Q1. The resistor R1 is electrically connected to the collector of the first switch tube BJT1, the collector of the first switch tube BJT1 is electrically connected to the gate of the second switch tube MOS1 through the second resistor R2, and the drain of the second switch tube MOS1 is electrically connected to Between the second switch unit 123 and the second power supply unit 122, the L terminal of the first power supply unit 112 is electrically connected to the source of the second switch transistor MOS1 through the thermistor PTC, and the source of the second switch transistor MOS1 passes through the third The resistor R3 is electrically connected between the second resistor R2 and the collector of the first switch transistor BJT1.

It can be understood that after the first switch unit 113 is closed, the first power supply unit 112 outputs a power signal to the base of the first switch transistor BJT1, and at this time, the first switch transistor BJT1 is turned on and outputs a high-level signal to the second switch tube BJT1. The gate of the switch transistor MOS1 turns on the second switch transistor MOS1, so that the first power supply unit 112 communicates with the first switch transistor 113, the first communication circuit 114, the first switch transistor BJT1, the second switch transistor MOS1 and the The two power supply units 122 are connected.

In the embodiment shown in the figure, the first switch transistor BJT1 is a triode, and the second switch transistor MOS1 is a MOS transistor. In other embodiments, the first switch tube BJT1 can also use switching devices such as thyristors, relays, MOS tubes, etc.; the second switch tube MOS1 can also use high-power triodes, thyristors, solid state relays, relays, Switching devices such as photorelays.

In addition, it should be noted that the first switch Q1 is closed by default; therefore, once the base of the first switch transistor BJT1 receives the power signal, the wake-up circuit 124 can be in a closed state; however, once the first switch Q1 After being switched to the off state under the control of the second control unit 121, the wake-up circuit 124 is in the off state. Wherein, once the first switch Q1 is turned off, the first power supply unit 112 cannot supply power to the second power supply unit 122 through the wake-up circuit 124 .

In an optional embodiment, the wake-up circuit 124 further includes a first diode D1 and a fourth resistor R4, and the first communication circuit 114 is connected to the first switch tube in series with the first diode D1 and the fourth resistor R4. The base of the BJT1 is electrically connected, the anode of the first diode D1 is electrically connected to the first communication circuit 114, the cathode of the first diode D1 is electrically connected to the fourth resistor R4, and the second communication circuit 125 is electrically connected to the first communication circuit 114. Between the anode of a diode D1 and the first communication circuit 114 .

Understandably, since the first diode D1 is reversely connected to the second communication circuit 125 , the first diode D1 can effectively prevent the current inside the wake-up circuit 124 from affecting the second communication circuit 125 and ensure that the second communication circuit 125 of stability. In another optional embodiment, the wake-up circuit 124 further includes a second diode D2, the second diode D2 is connected in series between the thermistor PTC and the source of the second switch transistor MOS1, and the second diode D2 is connected in series between the thermistor PTC and the source of the second switch transistor MOS1. The anode of the pole tube D2 is electrically connected to the thermistor PTC, and the cathode of the second diode D2 is electrically connected to the source of the second switch tube MOS1.

Understandably, the second diode D2 is reversely connected to the first power supply unit 112, which can prevent the wake-up circuit 124 from affecting the first power supply unit 112 when a fault (eg, short circuit) occurs, thereby affecting the power supply.

The second control unit 121 is used to control the second switch unit 123 to close after being woken up.

The second switch unit 123 may be, but not limited to, a single-pole single-throw switch, a high-power triode, a thyristor, a solid-state relay, an insulated gate bipolar transistor (IGBT), a MOS transistor, and the like.

It can be understood that after the second control unit 121 is woken up, it can control the motor to run, causing the load of the external unit 120 to increase, so that the resistance of the thermistor PTCPTC increases continuously. The transmitted current is not enough to load the load of the external unit 120 , so it is necessary to control the second switch unit 123 to close again, so that the wake-up circuit 124 is short-circuited, so as to ensure that the external unit 120 can obtain a sufficiently large current.

In addition, the second control unit 121 is also used to control the first switch Q1 to be turned off after being woken up, so that the second communication circuit 125 can work normally.

Understandably, when the first switch Q1 is closed, the signal transmitted by the first communication circuit 114 always transmits the signal to the wake-up circuit 124 , which easily affects the normal communication of the second communication circuit 125 . Therefore, in order to ensure that the internal unit 110 and the external unit 120 can normally exchange data after the external unit 120 is woken up, the second control unit 121 controls the second switch unit 123 to close, and then controls the first switch Q1 to open.

Therefore, the principle of the present invention is as follows: when receiving the power-on command, the first control unit 111 controls the single-pole single-throw switch K1 to close, so that the first power supply unit 112 outputs the power supply signal through the voltage stabilization unit 115 and the first communication circuit 114 to the The base of the first switch BJT1, at this time, the first switch BJT1 is turned on and outputs a high level signal to the gate of the second switch MOS1, so that the second switch MOS1 is turned on and outputs a signal to the second power supply unit 122 to wake up the second control unit 121; in order to ensure that the input current can drive the load to run, the second control unit 121 controls the second switch unit 123 to close after being woken up, so that the first power supply unit 112 directly supplies the second power supply unit 122 supplies power; in order to ensure normal communication between the internal unit 110 and the external unit 120, the second control unit 121 controls the first switch Q1 of the wake-up circuit 124 to turn off; so far, the low power consumption control system 100 enters the normal working mode.

Second Embodiment

The utility model provides another low power consumption control system 100, which is applied to a one-to-many model powered by an external machine. It should be noted that the basic principles and technical effects of the low power consumption control system 100 provided in this embodiment are the same as those of the above-mentioned embodiments. Corresponding content in the examples.

Please refer to FIG. 3 , which is a circuit diagram of a low power consumption control system 100 provided by an embodiment of the present invention. The low power consumption control system 100 includes a plurality of internal units 110 and an external unit 120 , each of the internal units 110 includes a first communication circuit 114 , the external unit 120 includes a plurality of second communication circuits 125 , the plurality of indoor units 110 and the multiple The second communication circuits 125 are in one-to-one correspondence, and the first communication circuit 114 of each internal unit 110 is electrically connected to the corresponding second communication circuit 125 .

It should be noted that any one of the internal units 110 in this embodiment is basically similar to the internal unit 110 provided in the first embodiment, and details are not repeated here. However, it can be understood that, in this embodiment, when the first control unit 111 of any one of the internal units 110 receives a power-on command, it will control the corresponding first switch unit 113 to close so as to supply power to the external unit. At this time, the external unit 120 to be woken up.

Third Embodiment

The present invention provides another low power consumption control system 100 , which is mainly applied to an air conditioner of the type powered by the internal unit 110 . It should be noted that the basic principles and technical effects of the low power consumption control system 100 provided in this embodiment are the same as those of the above-mentioned embodiments. Corresponding content in the examples. Please refer to FIG. 4 , which is a block diagram of a circuit structure of a low power consumption control system 100 provided by an embodiment of the present invention. The low power consumption control system 100 includes an internal unit 110 and an external unit 120, the internal unit 110 includes a first control unit 111, a first power supply unit 112 and a first switch unit 113, and the external unit 120 includes a second control unit 121, a second power supply unit 122 and second switch unit 123, the first control unit 111 is electrically connected to the first switch unit 113 and the first power unit 112, respectively, the first power unit 112, the first switch unit 113, the second switch unit 123 and the second The power supply units 122 are electrically connected in sequence, the first switch unit 113 is electrically connected with the second power supply unit 122 , and the second switch unit 123 is electrically connected with the second control unit 121 .

The first control unit 111 is configured to control the first switch unit 113 to close when receiving a power-on command.

The first power supply unit 112 is further configured to supply power to the second power supply unit 122 through the first switch unit 113 to wake up the second control unit 121 after the first switch unit 113 is closed.

The second control unit 121 is used to control the second switch unit 123 to close after being woken up.

Please refer to FIG. 5 , which is a circuit diagram of the low power consumption control system 100 provided by the present invention. The first switch unit 113 is a SPST switch K1 , the movable terminal of the SPST switch K1 is electrically connected to the N terminal of the first power supply unit 112 , and the fixed terminal of the SPST switch K1 is connected to the first power supply unit 115 through the voltage stabilization unit 115 . The L terminal of the power supply unit 112 is electrically connected, one end of the thermistor PTC is electrically connected to the L terminal of the first power supply unit 112 , and the other end of the thermistor PTC is directly connected to the second power supply unit 122 through a jumper. Therefore, as long as the SPST switch K1 is closed, the first power supply unit 112 can output an electrical signal to the second power supply unit 122 to wake up the second control unit 121 .

Please refer to FIG. 2 and FIG. 5 in combination. The circuit diagram of the low power consumption control system 100 provided in this embodiment is actually obtained by improving the circuit diagram provided in FIG. 2 . Specifically, the AC-L line in FIG. 2 is changed to the OUTDR line, and the connection mode is changed; at the same time, a jumper JUMP1 is connected in parallel on the original wake-up circuit 124 so that the wake-up circuit 124 is short-circuited. It can be seen that the circuit of the low power consumption control system 100 provided by the present invention can be adapted to air conditioners of different power supply types with simple modification, and the adaptability is strong, which saves development cost and time cost.

It can be understood that the principle of this embodiment is: when receiving the power-on command, the first control unit 111 controls the single-pole single-throw switch K1 to close, so that the first power supply unit 112 can directly output electrical signals to the second power supply unit 122; To ensure that the input current can drive the load to run, the second control unit 121 controls the second switch unit 123 to close after being woken up, so that the first power supply unit 112 prevents the thermistor PTC from directly supplying power to the second power supply unit 122 to wake up the first power supply unit 122. Two control units 121 .

The present invention also provides an air conditioner, the air conditioner includes the low power consumption control system 100 provided by any one of the above embodiments.

To sum up, in the low power consumption control system provided by the present invention, the internal unit includes a first control unit, a first power supply unit, a first switch unit and a first communication circuit, and the external unit includes a second control unit, a second A power supply unit, a second switch unit and a wake-up circuit, the first control unit is electrically connected to the first switch unit and the first power supply unit respectively, the first power supply unit, the first switch unit, the first communication circuit, the wake-up circuit, the second power supply The unit and the second control unit are electrically connected in sequence, and the first power supply unit, the first switch unit, the second switch unit and the second power supply unit are electrically connected in sequence. By arranging the first switch unit and the second switch unit, the external unit cannot obtain power in the standby state, thereby effectively reducing the power consumption of the external unit in the standby state and saving power.

Although the present invention is disclosed above, the present invention is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be based on the scope defined by the claims.

Claims (11)

1. A low-power-consumption control system is characterized by comprising an inner machine and an outer machine, wherein the inner machine comprises a first control unit, a first power supply unit, a first switch unit and a first communication circuit, the outer machine comprises a second control unit, a second power supply unit, a second switch unit and a wake-up circuit, the first control unit is electrically connected with the first switch unit and the first power supply unit respectively, the first power supply unit, the first switch unit, the first communication circuit, the wake-up circuit, the second power supply unit and the second control unit are electrically connected in sequence, the first power supply unit, the first switch unit, the second switch unit and the second power supply unit are electrically connected in sequence, and the second control unit is electrically connected with the second switch unit;

the first control unit is used for controlling the first switch unit to be closed when a starting-up instruction is received;

the first power supply unit is used for transmitting a power supply signal to the wake-up circuit through the first switch unit and the first communication circuit after the first switch unit is closed;

the wake-up circuit is configured to close in response to the power signal;

the first power supply unit is also used for supplying power to the second power supply unit through the first switch unit, the first communication circuit and the wake-up circuit after the wake-up circuit is closed so as to wake up the second control unit;

the second control unit is used for controlling the second switch unit to be closed after being awakened.

2. The low power consumption control system of claim 1, wherein the wake-up circuit comprises a first switch tube, a second switch tube, a first switch, a thermistor, a first resistor, a second resistor, and a third resistor, the first communication circuit is electrically connected to a base of the first switch tube, an emitter of the first switch tube is electrically connected to the N-terminal of the first power unit through the first switch, an emitter of the first switch tube is electrically connected to a collector of the first switch tube through the first resistor, a collector of the first switch tube is electrically connected to a gate of the second switch tube through the second resistor, a drain of the second switch tube is electrically connected between the second switch unit and the second power unit, and an L-terminal of the first power unit is electrically connected to a source of the second switch tube through the thermistor, the source electrode of the second switch tube is electrically connected between the second resistor and the collector electrode of the first switch tube through the third resistor.

3. The low power consumption control system of claim 2, wherein the wake-up circuit further comprises a first diode and a fourth resistor, the first communication circuit is connected in series with the first diode and the fourth resistor and then electrically connected to the base of the first switch tube, the anode of the first diode is electrically connected to the first communication circuit, and the cathode of the first diode is electrically connected to the fourth resistor.

4. The low power consumption control system of claim 2, wherein the wake-up circuit further comprises a second diode, the second diode is connected in series between the thermistor and the source of the second switch tube, the anode of the second diode is electrically connected to the thermistor, and the cathode of the second diode is electrically connected to the source of the second switch tube.

5. The low power consumption control system of claim 2, wherein the outdoor unit further comprises a second communication circuit, one end of the second communication circuit is electrically connected between the first communication circuit and the base of the first switching tube, and the other end of the second communication circuit is electrically connected with the N-terminal of the first power supply unit;

the second control unit is further used for controlling the first switch to be switched off after being awakened so as to enable the second communication circuit to work normally.

6. The low power consumption control system according to claim 5, wherein the external unit further comprises a first voltage regulator tube, an anode of the first voltage regulator tube is electrically connected to the N end of the first power supply unit, and a cathode of the first voltage regulator tube is electrically connected between the first communication circuit and the base of the first switching tube.

7. The low power consumption control system according to any one of claims 1 to 6, wherein the internal unit further includes a voltage stabilizing unit, one end of the voltage stabilizing unit is electrically connected to the first power supply unit, and the other end of the voltage stabilizing unit is electrically connected to the L-terminal of the first power supply unit through the first switch unit.

8. The low power consumption control system according to claim 7, wherein the voltage regulator unit includes a second voltage regulator tube, a first capacitor and a fifth resistor, the second voltage regulator tube is connected in parallel with the first capacitor and the fifth resistor, an anode of the second voltage regulator tube is electrically connected to the N terminal of the first power supply unit, and a cathode of the second voltage regulator tube is electrically connected to the L terminal of the first power supply unit through the first switch unit.

9. The low power consumption control system according to claim 1, wherein the low power consumption control system comprises a plurality of internal units, the external unit comprises a plurality of second communication circuits, the plurality of internal units correspond to the plurality of second communication circuits one by one, and the first communication circuit of each internal unit is electrically connected to the corresponding second communication circuit.

10. A low-power-consumption control system is characterized by comprising an inner machine and an outer machine, wherein the inner machine comprises a first control unit, a first power supply unit and a first switch unit, the outer machine comprises a second control unit, a second power supply unit and a second switch unit, the first control unit is electrically connected with the first switch unit and the first power supply unit respectively, the first power supply unit, the first switch unit, the second switch unit and the second power supply unit are electrically connected in sequence, the first switch unit is electrically connected with the second power supply unit, and the second switch unit is electrically connected with the second control unit;

the first control unit is used for controlling the first switch unit to be closed when a starting-up instruction is received;

the first power supply unit is also used for supplying power to the second power supply unit through the first switch unit after the first switch unit is closed so as to wake up the second control unit;

the second control unit is used for controlling the second switch unit to be closed after being awakened.

11. An air conditioner characterized in that it comprises a low power consumption control system according to any one of claims 1 to 10.

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