CN214850487U - Low-power-consumption power supply system and air conditioner - Google Patents

Abstract

The utility model provides a low-power consumption power supply system and air conditioner, low power consumption power supply system includes interior machine and outer machine, interior machine is including the first power module, first control module and the first switch module that link to each other, outer machine includes second switch module and the circuit of awakening up, second power module, the second control module that links to each other, second switch module with the circuit of awakening up is parallelly connected, first power module with first switch module, the circuit of awakening up are connected in proper order electrically, second control module respectively with second switch module, the circuit of awakening up are connected electrically. The low power consumption power supply system of the utility model is additionally provided with a new wake-up circuit based on a resistance-capacitance voltage reduction mode, which can effectively reduce the voltage, avoid the direct impact of strong current on the wake-up circuit, and is safer and more reliable, especially under the condition of unstable voltage; the on-off of the live wire of the external unit is controlled by the relay, so that the functions of low-power-consumption standby, awakening and communication are realized.

Description

Low-power-consumption power supply system and air conditioner

Technical Field

The utility model relates to an air conditioner technical field particularly, relates to a low-power consumption power supply system and air conditioner.

Background

With the improvement of living standard, the air conditioner has entered into thousands of households, office places and public places, even applied to various vehicles, becomes a necessity of modern daily life, can prevent heatstroke and cool down, and provides a comfortable rest and working environment. In order to meet the demand of the times and promote the technical progress, the state puts forward higher requirements on the energy efficiency standard of electrical equipment; the energy consumption index of the air conditioner is receiving more attention.

When the current common air conditioner is in standby, circuits of an internal machine and an external machine are in a power-on state, a voltage conversion circuit still works continuously, partial power consumption is generated additionally, partial energy waste is caused, and the energy consumption is high. In order to respond to the national energy-saving requirement, many air-conditioning enterprises change the linear power supply of the internal machine circuit into a switching power supply so as to reduce the standby power of the power supply module of the internal machine. However, the standby power consumption of the power supply of the internal machine circuit is only reduced, and the power supply and other working modules of the external machine circuit have large power consumption. On the other hand, when the outdoor unit awakening power supply used by the standby power consumption control circuit of the air conditioner utilizes a communication line to directly lead alternating current from the indoor unit to the outdoor unit, the circuit structure is complex; meanwhile, the components used in the communication circuit bear larger electrical stress and have high requirements on the components; the requirement on electrical safety is high, and potential safety hazards exist.

Aiming at the problems that components used in a communication circuit are high in electrical stress and a wake-up circuit is prone to failure, an effective solution is not provided in the existing air conditioner industry.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving above problem, under the zero communication circuit's of current fire framework, adopt the circuit of awakeing up through resistance-capacitance step-down mode to realize the low-power consumption standby, awaken up and communication function, improve communication power supply's ability itself, compatible interior outer machine power supply model is safe and reliable more simultaneously.

In order to solve the problem, the utility model provides a low-power consumption power supply system, including interior machine and outer machine, its characterized in that, interior machine is including continuous first power module, first control module and first switch module, outer machine includes second switch module and the circuit of awakening up, second power module, the second control module that links to each other, second switch module with awakening up the circuit and connecting in parallel, first power module with first switch module, awakening up the circuit and connecting in proper order the electricity, second control module respectively with second switch module, awakening up the circuit electricity and connecting. Preferably, the second switch module comprises a relay. The first power module and the second power module are prior art and are not described herein.

The first control module is used for controlling the state of the first switch module; the wake-up circuit comprises a voltage reduction module and a relay which are connected, the first switch module is connected with a normally open contact of the relay in series and then is electrically connected with the second power module, and the relay is used for responding to the wake-up signal and closing to wake up the second control module; the second control module is used for controlling the second switch module to be closed after being awakened so as to enable the outdoor unit to normally work.

Generally, the power supply mode of an air conditioner can be divided into an inner machine power supply mode and an outer machine power supply mode, wherein a main control panel of the air conditioner powered by an outer machine is arranged on the outer machine, the inner machine only comprises a simpler inner machine circuit board, and the outer machine power supply mode mostly uses 380V three-phase power; the main control panel of the air conditioner powered by the indoor unit is arranged on the indoor unit. When a starting-up instruction is received, the first control module of the internal machine controls the first switch to be switched to a second state so that the first control module is electrically connected with the wake-up circuit, the generated wake-up signal is transmitted to the wake-up circuit through the first switch module and the first communication circuit so as to wake up the second control module, and meanwhile, the second control module controls the second switch module to be closed and controls the wake-up circuit to be opened after being woken up so that the external machine can normally work; at other moments, due to the existence of the first switch module and the wake-up circuit, the first power module cannot be directly connected with the second power module and supplies power to the second control module, so that the inner machine loop and the outer machine loop are both in an open circuit state, and the power consumption of the power supply system in standby can be effectively reduced. The optical coupler is arranged in the wake-up circuit and is directly connected with the emphasis, so that the requirement on voltage is high; can effectively step down through setting up step-down module, avoid the direct impact to awakening circuit of forceful electric power.

Preferably, the wake-up circuit further comprises a first optical coupler, a first switching tube and a second switching tube, wherein the first end of the first optical coupler electrically connects the first switching module with an emitter and a base electrode of the second switching tube respectively, a collector of the second switching tube is connected with one end of the relay, and meanwhile, a collector of the second switching tube is connected with the N end of the first power module; the second end of the first optical coupler is used for electrically connecting the voltage reduction module with a collector electrode and a base electrode of a first switch tube respectively, and an emitter electrode of the first switch tube is connected with the other end of the relay.

The first switch tube is used for being matched with the voltage reduction module to adjust the voltage and the current of the relay; the second switch tube is used for being conducted in response to the wake-up signal so as to electrify the relay; the relay is used for controlling the normally open contact of the relay to be closed after being electrified, so that the first power module is electrically connected with the second power module, and the second control module is powered through the second power module to wake up the second control module.

When a starting-up instruction is received, the first control module controls the first switch switching module to be switched to a second state, the first switch switching module, the third resistor, the first optical coupler and the second switching tube are sequentially connected, so that the switch of the relay is closed, the first power supply module and the second power supply module are finally conducted, and power is supplied to the second control module to wake up the second control module; the wake-up circuit has a complex structure, is unstable in operation and has high power consumption when electrified for a long time; in order to ensure that the external machine can normally operate, the second control module is also used for controlling the second switch module to be closed after being awakened, so that the first power supply module can continuously supply power to the second control module through the second power supply module, and the normal operation of the external machine is ensured; the method of waking up the external unit only when the power supply system is started can effectively reduce the power consumption of the power supply system in standby.

Preferably, the wake-up circuit further comprises a second resistor, a second diode and a first voltage regulator tube, wherein one end of the second resistor is connected with the first optical coupler, the other end of the second resistor is arranged between a base electrode of the first switch tube and the second diode, the second diode is respectively connected with a base electrode of the first switch tube and one end of the relay, and the first voltage regulator tube is respectively connected with one end of the second diode close to the relay and an emitter of the first switch tube; meanwhile, the second diode and the first voltage-regulator tube are respectively connected with the N end of the first power supply module. The second diode is arranged to prevent the current at the N end of the first power supply module or the current of the relay loop from flowing to the base electrode of the first switch tube; the first voltage-regulator tube and the second resistor are arranged, so that the voltage value output to the relay by the second switch tube can be effectively stabilized, the relay can be stably electrified, the minimum driving current of the relay is ensured, and overcurrent is avoided; in addition, the first voltage regulator tube can also prevent the first switch tube from being damaged by large current when the distribution line is reversely connected.

Preferably, the wake-up circuit further comprises a second optical coupler; the second control module is connected with the first end of the second optical coupler and controls the on-off of the first end of the second optical coupler, and the second end of the second optical coupler connects the first switch module with the base electrode of the second switch tube; the setting enables the wake-up signal generated by the first control module and the quit wake-up signal generated by the second control module to be respectively controlled, interference is avoided, and control logic is clear.

Preferably, an eighth resistor is further disposed between the base electrode of the second switch tube and the second optical coupler, a fourth resistor is disposed between the first optical coupler and the base electrode of the second switch tube, and a seventh resistor is further disposed between the second optical coupler and the collector of the second switch tube. That is to say: an emitting electrode of the second switching tube is arranged between the fourth resistor and the first optical coupler, and the seventh resistor is connected with the N end of the first power supply module. The arrangement can ensure that the currents of the base electrode, the collector electrode and the emitter electrode of the second switching tube cannot meet the requirement and are not conducted when the second optical coupler is conducted, and the first optical coupler cannot be conducted to disconnect the relay.

Preferably, the voltage reduction module includes a resistance-capacitance voltage reduction loop formed by a first resistor and a first capacitor which are arranged in parallel. This voltage value of awakening circuit is effectively stabilized in the setting, avoids the strong current to cause the impact to awakening circuit, guarantees that the relay can be electrified stably.

Preferably, the indoor unit further comprises a first communication circuit, the outdoor unit further comprises a second communication circuit, the first switch module, the first communication circuit and the wake-up circuit are electrically connected in sequence, and the second communication circuit is connected with the second control module and used for controlling the on-off of the wake-up circuit and the second switch module after being awakened; the first control module is further used for controlling the first switch module to be switched to a first state after the second control module is awakened. When the second control module is awakened, the awakening circuit can be switched off by controlling the awakening circuit to be switched off so as to prevent the awakening circuit from influencing data transmission of the outdoor unit; meanwhile, the first switch module is switched to the first state, so that the first power supply module is directly connected with the second power supply module without passing through the first communication module, and the first communication module only plays a role in data transmission between the internal unit and the external unit.

Preferably, the second control module is further configured to control the second switch module to be turned off when a shutdown instruction is received, so as to stop transmitting the transport line data to the first control module; the first control module is further used for controlling the first switch module to be switched to a third state when the running data transmitted by the external unit is not received within a preset time. After a shutdown instruction is received, the second switch module is controlled to be switched off, so that the second control module is powered off and the external machine cannot work normally, and low power consumption of the external machine in a standby state is guaranteed; meanwhile, the first control module controls the switch module to be switched to the third state if the first control module does not receive the operation data within a certain time, so that the internal unit is in an open circuit state, and the power consumption of the internal unit in standby is reduced.

Preferably, the first switch module includes a single-pole double-throw switch, a movable end of the single-pole double-throw switch is electrically connected between the wake-up circuit and an L end of the first power module, a first fixed end of the single-pole double-throw switch is electrically connected with an N end of the first power module through a voltage stabilizing circuit, and a second fixed end of the single-pole double-throw switch is electrically connected with the other end of the first communication circuit; when the movable end of the single-pole double-throw switch is connected with the second fixed end, the first switch module is in a second state, and when the movable end of the single-pole double-throw switch is connected with the first fixed end, the first switch module is in a first state. Preferably, one end of the voltage stabilizing circuit is electrically connected with the N end of the first power supply module, and the other end of the voltage stabilizing circuit is electrically connected with the first switch module. This setting can effectively stabilize the voltage between the N of first power module end and the L of first power module end.

Compared with the prior art, low-power consumption power supply system have following beneficial effect: (1) the utility model discloses a low-power consumption power supply system increases a new awakening circuit based on resistance-capacitance voltage reduction mode for voltage judgement, and controls the break-make of outer machine live wire through the relay, realizes low-power consumption standby, awakens and communication function, protects communication circuit, and reserves the wire jumper and changes the line of walking on the circuit, need not redesign or change the board, just can realize the model of compatible outer machine power supply and interior machine power supply; (2) the live wire is connected with the wake-up circuit in a resistance-capacitance voltage reduction mode, so that the voltage can be effectively reduced, the direct impact of strong electricity on the wake-up circuit is avoided, and the method is safer and more reliable, especially under the condition of unstable voltage; (3) the two optical couplers are used for respectively controlling the awakening and quitting awakening signals, so that interference is avoided, and the control logic is clear; (4) the voltage at the two ends of the relay is accurately stabilized to the working voltage through the combination of the second resistor, the first switch tube, the second diode and the first voltage-stabilizing tube, the minimum driving current of the relay is ensured, overcurrent is avoided, and the service life is prolonged.

The utility model also provides an air conditioner, the air conditioner includes foretell low-power consumption power supply system. The air conditioner has the same beneficial effects as the low-power-consumption power supply system, and the details are not repeated herein.

Drawings

Fig. 1 is a block diagram of a circuit structure of a low power consumption power supply system according to an embodiment of the present invention;

fig. 2 is a circuit diagram of a low power consumption power supply system according to an embodiment of the present invention;

fig. 3 is a block diagram of another circuit structure of the low power consumption power supply system according to the embodiment of the present invention;

fig. 4 is a circuit diagram of the low power consumption power supply system according to the embodiment of the present invention.

Description of reference numerals:

1-an internal machine; 11-a first control module; 12-a first power supply module; 13-a first switching module; 14-a voltage stabilizing circuit; 15-a first communication circuit; 2-an external machine; 21-a wake-up circuit; 22-a second communication circuit; 23-a second power supply module; 24-a second control module; 25-a second switching module; 26-a voltage stabilizing module; k1-single pole double throw switch; c1 — first capacitance; c5 — fifth capacitance; q1-first switch tube; q2-second switch tube; RY 1-relay; d1 — first diode; d2 — second diode; d4 — fourth diode; d5-fifth diode; ZD 1-first voltage regulator tube; ZD 2-a second voltage regulator tube; u1 — first optical coupler; u2 — second optical coupler; r1 — first resistance; r2 — second resistance; r3 — third resistance; r4-fourth resistor; r5-fifth resistor; r6-sixth resistance; r7 — seventh resistor; r8 — eighth resistance; r9-ninth resistor.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

Example 1

As shown in fig. 1, a low power consumption power supply system includes an internal unit 1 and an external unit 2, where the internal unit 1 includes a first power module 12, a first control module 11, and a first switch module 13 connected to each other, the external unit 2 includes a second switch module 25, and a wake-up circuit 21, a second power module 23, and a second control module 24 connected to each other, the second switch module 25 is connected in parallel to the wake-up circuit 21, and the first power module 12 is electrically connected to the first switch module 13 and the wake-up circuit 21 in sequence. Preferably, the internal machine 1 further comprises a first communication circuit 15 and a voltage stabilizing circuit 14, the first power module 12, the voltage stabilizing circuit 14, the first communication circuit 15 and the first switch module 13 are electrically connected in sequence, one end of the voltage stabilizing circuit 14 is electrically connected with the first power module 12, and the other end of the voltage stabilizing circuit 14 is electrically connected with the first switch module 13; the outdoor unit 2 further includes a second communication circuit 22, and the second control module 24 is electrically connected to the second switch module 25 and the wake-up circuit 21 through the second communication circuit 22.

The output end of the first power module 12 includes an L end and an N end, and can provide a working voltage for the first control module 11. As an example of the present invention, the first power module 12 includes a power source, a rectifier bridge and a transformer, which are electrically connected in sequence. The rectifier bridge is used for converting alternating current input by the power supply into direct current, and the transformer is used for adjusting the voltage value output to other modules by the rectifier bridge. The first control module 11 can control the first switch module 13 to switch states. Preferably, the first switch module 13 has a first, second and third state. When in standby or shutdown, the first switch module 13 is in the third state, the communication network is disconnected, and the whole machine enters a low-power-consumption standby energy-saving state; when the power-on starts the external unit 2 through the wake-up circuit 21, the first switch module 13 is in the second state, generates a wake-up signal through the first communication circuit 15, and finally supplies power to the second control module 24 to wake up the external unit 2; during normal operation, the first switch module 13 is in the first state, and the first power module 12 is directly connected to the second power module 23 through the voltage stabilizing circuit 14 to short-circuit the wake-up circuit 21. As shown in fig. 2, the first switch module 13 preferably includes a single-pole double-throw switch K1, the active end of the single-pole double-throw switch K1 is electrically connected between the wake-up circuit 21 and the L terminal of the first power module 12, the first fixed end of the single-pole double-throw switch K1 is electrically connected to the regulator circuit 14, and the second fixed end of the single-pole double-throw switch K1 is electrically connected to the other end of the first communication circuit 15. Preferably, the first switch module 13 further includes a fourth diode D4, and the second fixed end of the single-pole double-throw switch K1 is electrically connected to the first communication circuit 15 after being connected in series with the anode and the cathode of the fourth diode D4.

One end of the voltage stabilizing circuit 14 is connected to the N-terminal of the first power module 12, and the other end is electrically connected to the first switch module 13. When the first switch module 13 is in the first state, the other end of the voltage stabilizing circuit 14 is connected to the L end of the first power module 12; when the power supply is in the second state, the other end of the voltage stabilizing circuit 14 passes through the first communication circuit 15 and then is connected to the L terminal of the first power supply module 12. Preferably, the voltage stabilizing circuit 14 includes a second voltage regulator ZD2, a fifth resistor R5, and a fifth capacitor C5, which are connected in parallel, an anode of the second voltage regulator ZD2 is electrically connected to the N-terminal of the first power module 12, and a cathode of the second voltage regulator ZD2 is electrically connected between the first communication circuit 15 and the first fixed terminal of the single-pole double-throw switch K1. This setting can guarantee that there is the pressure drop all the time at the N of first switch module 13 end and L end, avoids taking place N of first switch module 13 end and L end direct connection and leads to the short circuit. The first communication circuit 15 is configured to send a wake-up signal to the external unit 2 when the external unit is started and perform data exchange between the internal unit 1 and the external unit 2 when the external unit is operated. Preferably, the first communication circuit 15 further includes a fifth diode D5, an anode of the fifth diode D5 is electrically connected to the first communication circuit 15, and a cathode of the fifth diode D5 is electrically connected between the second fixed terminal of the single-pole double-throw switch K1 and the wake-up circuit 21. This arrangement allows the wake-up circuit 21 to have no effect on the first communication circuit 15. Preferably, the first communication circuit 15 further includes a sixth resistor R6, and the sixth resistor R6 is disposed between the anode of the fifth diode D5 and the first communication circuit 15, and is used for adjusting the voltage of the first communication circuit 15.

The first control module 11 is used to control the state of the first switch module 13. When receiving a power-on command, the first control module 11 generates a control signal, where the control signal may instruct the first switch module 13 to switch from the third state to the second state; when the second control module 24 is awakened, the first control module 11 may control the first switch module 13 to switch from the second state to the first state, and if the operation data transmitted by the outdoor unit 2 is not received within the preset time, the first switch module 13 may be controlled to switch to the third state again. By controlling the first switch module 13 to switch to the second state, the wake-up signal of the first communication circuit 15 is transmitted to the wake-up circuit 21, and finally the second power module 23 is connected to start the external unit 2; when the outdoor unit 2 is started, the state is switched to the first state to protect the first communication circuit 15 and the outdoor unit operates according to normal logic, so that more electricity is saved; by controlling the first switch module 13 to switch to the third state, the loop of the inner machine 1 can be disconnected, and the loop power consumption of the inner machine 1 can be avoided.

The wake-up circuit 21 is configured to close in response to a wake-up signal transmitted by the first control module 11 and to open under the control of the second control module 24 after the second control module 24 is woken up. When the wake-up circuit 21 is closed, the first power module 12 is communicated with the second power module 23 and supplies power to the second control module 24 to wake up the second control module 24; when the second control module 24 is woken up, the power on of the wake-up circuit 21 increases the energy consumption, so that the second control module 24 sends a disconnection signal to the wake-up circuit 21 through the second communication circuit 22 and simultaneously connects the second switch module 25.

The wake-up circuit 21 further comprises a voltage reduction module 26, a relay RY1, a first optical coupler U1, a first switch tube Q1 and a second switch tube Q2, the first switch module 13 is electrically connected with the second power module 23 after being connected with a normally open contact of the relay RY1 in series, the first end of the first optical coupler U1 electrically connects the first switch module 13 with an emitter and a base electrode of the second switch tube Q2 respectively, and a collector of the second switch tube Q2 is electrically connected with the other end of the relay RY 1; the voltage dropping module 26 is located between the first switch module 13 and the first optocoupler U1; preferably, the voltage-reducing module 26 includes a first resistor R1 and a first capacitor C1, which are connected in parallel. This voltage value of setting effective stable wake-up circuit 21 avoids the strong current to cause the impact to wake-up circuit 21, guarantees that relay RY1 can stably power on. A second end of the first optocoupler U1 electrically connects the voltage reduction module 26 with a collector and a base of a first switch tube Q1, respectively, and an emitter of the first switch tube Q1 is connected with the other end of the relay RY 1; the first switch tube Q1 is used for cooperating with the voltage reduction module 26 to adjust the voltage and current of the relay RY 1; the second switch tube Q2 is used for conducting in response to the wake-up signal to power on the relay RY 1. After receiving the wake-up signal, the wake-up circuit 21 controls the normally open contact of the relay RY1 to be closed, so that the first power module 12 is electrically connected to the second power module 23, and supplies power to the second control module 24 through the second power module 23 to wake up the second control module 24. Preferably, the first switching tube Q1 and the second switching tube Q2 are triodes, and switching devices such as a thyristor, a relay, and a MOS transistor may be used.

Preferably, the wake-up circuit 21 further includes a second resistor R2, a second diode D2, and a first voltage regulator ZD1, the second resistor R2 is disposed between the base electrode of the first switch tube Q1 and the first optical coupler U1, the second diode D2 is respectively connected to the base electrode of the first switch tube Q1 and the relay RY1, and the first voltage regulator ZD1 is respectively connected to one end of the second diode D2 close to the relay RY1 and the emitter of the first switch tube Q1. The second diode D2 is connected to the terminal L of the first power module 12 in the opposite direction, so as to prevent the signal inside the wake-up circuit 21 from affecting the power signal. The output voltage of the first switching tube Q1 can be adjusted by arranging the second resistor R2, so that the voltage and the current of the relay RY1 can meet the starting requirement but are not overcurrent. Preferably, the wake-up circuit 21 further includes a first diode D1, the first switch module 13 is connected in series with the anode and cathode of the first diode D1 and then connected to the first terminal of the first optocoupler U1, because the first diode D1 is reversely electrically connected to the first communication circuit 22, the signal inside the wake-up circuit 21 does not affect the normal operation of the first communication circuit 15.

Preferably, the wake-up circuit 21 further comprises a second optical coupler U2; the second control module 24 is connected to a first end of a second optocoupler U2 and controls on and off of the first end, a ninth resistor R9 is connected in series with a first end of a second optocoupler U2, and a second end of the second optocoupler U2 connects the first switch module 13 to a base electrode of a second switch Q2; this arrangement allows the wake-up signal generated by the first control module 11 and the wake-up exit signal generated by the second control module 24 to be controlled separately, avoiding interference and having a distinct control logic. Preferably, an eighth resistor R8 is further disposed between the base electrode of the second switching tube Q2 and the second photo coupler U2, a fourth resistor R4 is disposed between the first photo coupler U1 and the emitter of the second switching tube Q2, and a seventh resistor R7 is further disposed between the first photo coupler U1 and the collector of the second switching tube Q2. This arrangement can adjust the base, collector and emitter currents of the second switch Q2 to meet the requirements, and ensure that the first optocoupler U1 cannot conduct to turn off the relay RY1 when receiving the exit wakeup signal.

When the internal unit 1 is powered on and in standby, the contact of the relay RY1 of the external unit 2 is not connected to AC-L, and the external unit 2 is not powered on; when receiving a power-on command, the first control unit 11 controls the single-pole double-throw switch K1 to switch to a second state, and is connected with the second power module 23 of the outer machine 2 through the fourth diode D4 and the relay RY 1; the first communication circuit 15 generates a wake-up signal and acts on the wake-up circuit 21, the first end of the first optical coupler U1 and the second switch tube Q2 are electrically connected with the AC-L, so that the first optical coupler U1 works and is conducted, the resistance-capacitance voltage reduction module C1/R1 of the AC-L ensures the voltage and the current of the driving relay RY1 through the first optical coupler U1 and a loop, the closing of the RY1 is controlled, the AC-L is conducted, the first power module 12 is communicated with the second power module 23, and the second power module 23 supplies power to the second control module 24 to wake up the outdoor unit 2.

After the wake-up is successful, the second control module 24 controls the second switch module 25 to be closed through the second communication circuit 22, and simultaneously sends a quit wake-up signal to the second optical coupler U2 of the wake-up circuit 21, the quit wake-up signal is communicated with the first end of the second optical coupler U2 to enable the first optical coupler U2 to be in working conduction, the second end of the second optical coupler U2 is communicated with the first diode D1, the eighth resistor R8 and the AC-L, at this time, the second switch tube Q2 does not work, the current passing through the third resistor R3, the first optical coupler U1 and the fourth resistor R4 is not enough to conduct the first optical coupler U1, and therefore the relay RY1 is disconnected; meanwhile, the first control module 11 controls the single-pole double-throw switch K1 to switch to the second state, and is directly connected with the voltage stabilizing circuit 14, and then quits to wake up, the whole machine works normally, and the communication circuit operates according to normal logic.

When the power supply is standby or turned off, the control signal generated by the second control module 24 controls the second switch module 25 to be disconnected from the AC-L through the second communication circuit 22, so that the external unit 2 cannot be powered on, and after all loads of the internal unit 1 stop running, the first control module 11 controls the single-pole double-throw switch K1 to be switched to the third state, so as to disconnect the communication network, and the whole power supply enters a low-power-consumption standby energy-saving state; while the wake-up signal connects the AC-L to the outer unit 2 through the single pole double throw switch K1, no circuit safety problem is generated to the first communication circuit 15 of the inner unit 1 due to the reverse bias of the fifth diode D5.

Example 2

In order to further increase the application of the low-power supply system, the applicant further improves the scheme, namely, the external machine power supply is changed from AC-L in the existing scheme to OUTDR by reserving JMP1 and changing the wiring, and JMP1 is installed to be compatible with the low-power consumption application under the condition of supplying power to the internal machine.

As shown in fig. 3 and 4, a low power supply system changes the AC-L line in fig. 2 to the OUTDR line, and changes the connection mode; meanwhile, a JUMP1 is connected in parallel to the original wake-up circuit 21 to short-circuit the wake-up circuit 21, the basic principle and the generated technical effect are the same as those of the above embodiment, and for the sake of brief description, reference may be made to the corresponding contents in the above embodiment for the part not mentioned in this embodiment. The low-power-consumption power supply system can adapt to air conditioners with different power supply types, has strong adaptability, and saves development cost and time cost.

When the inner machine 1 is in standby, the single-pole double-throw switch K1 is in a third state, and the outer machine 2 is not powered; the first control module 11 sends a wake-up signal to the wake-up circuit 21, starts the relay RY1, and judges whether a wake-up function is executed according to whether the running data of the external unit 2 is received; if the internal machine 1 receives the operation data of the external machine 2, the operation is executed according to the normal communication protocol logic; if the running data of the outer machine 2 is not received for N seconds continuously, the outer machine 2 is considered to be powered off, the awakening relay RY1 is disconnected, and the receiving is shielded, so that the outer machine 2 is powered off for 1s, 5s, 10s and the like; after that, the relay RY1 is turned on again, and waits for reception after a certain period of time, such as 1s, 2s, and 5s, and if the external machine data is not received in a predetermined time, the step is executed again. The wake-up function is quitted after the computer is started up for a certain number of times, such as 1 time, 2 times, 3 times, 5 times and the like or a period of time; the inner machine 1 controls the relay RY1 on the awakening circuit 21 of the outer machine 2 through communication to realize the on-off of the awakening circuit.

The utility model also provides an air conditioner, which can be a cabinet air conditioner, a wall-mounted air conditioner, a ceiling air conditioner and the like, and is preferably a cabinet air conditioner; the air conditioner comprises the low-power consumption control system, and is further provided with an evaporator, a condenser, a compressor, a fan and other components, and the structure and the assembly relationship are the prior art and are not described herein again.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present invention, and the scope of the present invention is defined by the appended claims.

Claims (9)

1. A low-power-consumption power supply system comprises an internal unit (1) and an external unit (2), and is characterized in that the internal unit (1) comprises a first power module (12), a first control module (11) and a first switch module (13) which are connected, the external unit (2) comprises a second switch module (25) and a wake-up circuit (21), a second power module (23) and a second control module (24) which are connected, the second switch module (25) is connected with the wake-up circuit (21) in parallel, the first power module (12) is electrically connected with the first switch module (13) and the wake-up circuit (21) in sequence, and the second control module (24) is electrically connected with the second switch module (25) and the wake-up circuit (21) respectively;

the first control module (11) is used for controlling the state of the first switch module (13); the wake-up circuit (21) comprises a voltage reduction module (26) and a relay (RY1) which are connected, the voltage reduction module (26) is a resistance-capacitance voltage reduction loop formed by a first resistor (R1) and a first capacitor (C1) which are arranged in parallel, the first switch module (13) is electrically connected with the second power supply module (23) after being connected with a normally open contact of the relay (RY1) in series, and the relay (RY1) is used for responding to a wake-up signal and closing to wake up the second control module (24); the second control module (24) is used for controlling the second switch module (25) to be closed after being awakened so as to enable the outer machine (2) to work normally.

2. The low power consumption power supply system according to claim 1, wherein the wake-up circuit (21) further comprises a first optical coupler (U1), a first switch tube (Q1), and a second switch tube (Q2), wherein a first end of the first optical coupler (U1) electrically connects the first switch module (13) with an emitter and a base of the second switch tube (Q2), respectively, a collector of the second switch tube (Q2) is connected with one end of the relay (RY1), a second end of the first optical coupler (U1) electrically connects the voltage-reducing module (26) with a collector and a base of the first switch tube (Q1), respectively, an emitter of the first switch tube (Q1) is connected with the other end of the relay (RY 1);

the first switch tube (Q1) is used for being matched with the voltage reduction module (26) to adjust the voltage and the current of the relay (RY 1);

the second switch tube (Q2) is used for responding to the wake-up signal and conducting to electrify the relay (RY 1);

the relay (RY1) is used for controlling the normally open contact of the relay (RY1) to be closed after being electrified, so that the first power supply module (12) is electrically connected with the second power supply module (23), and the second control module (24) is powered through the second power supply module (23) to wake up the second control module (24).

3. The low power consumption power supply system according to claim 2, wherein the wake-up circuit (21) further comprises a second resistor (R2), a second diode (D2), and a first diode (ZD1), one end of the second resistor (R2) is connected to the first optocoupler (U1), the other end of the second resistor (R2) is disposed between the base electrode of the first switch tube (Q1) and the second diode (D2), the second diode (D2) is respectively connected to the base electrode of the first switch tube (Q1) and one end of the relay (RY1), and the first diode (ZD1) is respectively connected to one end of the second diode (D2) close to the relay (RY1) and the emitter of the first switch tube (Q1).

4. The low power consumption power supply system according to claim 3, wherein the wake-up circuit (21) further comprises a second optocoupler (U2); the second control module (24) is connected with a first end of a second optical coupler (U2) and controls the on-off of the first end, and a second end of the second optical coupler (U2) connects the first switch module (13) with a base electrode of a second switch tube (Q2).

5. The low power consumption power supply system according to claim 4, wherein an eighth resistor (R8) is further disposed between the base electrode of the second switch tube (Q2) and the second optocoupler (U2), a fourth resistor (R4) is disposed between the first optocoupler (U1) and the base electrode of the second switch tube (Q2), and a seventh resistor (R7) is further disposed between the second optocoupler (U2) and the collector electrode of the second switch tube (Q2).

6. The low-power-consumption power supply system according to claim 1, wherein the internal unit (1) further comprises a first communication circuit (15), the external unit (2) further comprises a second communication circuit (22), the first switch module (13), the first communication circuit (15) and the wake-up circuit (21) are electrically connected in sequence, and the second communication circuit (22) is connected with a second control module (24) and is used for controlling the on-off of the wake-up circuit (21) and the second switch module (25) after being awakened; the first control module (11) is further configured to control the first switch module (13) to switch to the first state after the second control module (24) is woken up.

7. The low-power-consumption power supply system according to claim 6, wherein the second control module (24) is further configured to control the second switch module (25) to be turned off to stop transmitting the operation data to the first control module (11) when receiving a shutdown instruction; the first control module (11) is further configured to control the first switch module (13) to switch to the third state when the operation data transmitted by the outdoor unit (2) is not received within a preset time.

8. The low power consumption power supply system according to claim 7, wherein the first switch module (13) comprises a single-pole double-throw switch (K1), the active end of the single-pole double-throw switch (K1) is electrically connected between the wake-up circuit (21) and the L end of the first power module (12), the first fixed end of the single-pole double-throw switch (K1) is electrically connected with the N end of the first power module (12) through a voltage stabilizing circuit (14), and the second fixed end of the single-pole double-throw switch (K1) is electrically connected with the other end of the first communication circuit (15); wherein the first switch module (13) is in a second state when the active end of the single pole double throw switch (K1) is connected to the second fixed end, and the first switch module (13) is in a first state when the active end of the single pole double throw switch (K1) is connected to the first fixed end.

9. An air conditioner characterized in that it comprises a low power consumption power supply system according to any one of claims 1 to 8.

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