Power supply system and air conditioner

Abstract

The present invention provides a power supply system and an air conditioner, and relates to the technical field of power supply circuits. The indoor unit of the system includes a first power module, a first control module and a first switch module, and the outdoor unit includes a second power module, a second control module, a second communication circuit, a second switch module and a wake-up circuit. The first power module is electrically connected to the first switch module and the first control module respectively, and the first power module, the first switch module, the wake-up circuit, the second power module and the second control module are electrically connected in sequence. The first control module, the first switch module, the second communication circuit and the wake-up circuit are electrically connected in sequence, the second switch module is connected in parallel with the wake-up circuit, and the second switch module is electrically connected to the second control module. The present invention wakes up the outdoor unit only when a power-on command is received, otherwise the indoor unit circuit and the outdoor unit circuit are both in an open circuit state, which can effectively reduce the power consumption of the power supply system when in standby mode.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply circuits, and in particular to a power supply system and an air conditioner. Background Art

[0002] As people's living standards improve, the usage rate of air conditioners is getting higher and higher, and the country's energy efficiency standards are getting higher and higher, so the standby power consumption of air conditioners has attracted more and more attention.

[0003] In the prior art, air conditioners usually use communication lines to directly lead AC power from the indoor unit to the outdoor unit to wake up the outdoor unit; however, this will result in the indoor and outdoor circuits of the air conditioner being powered on even if the air conditioner is in standby mode, resulting in high energy consumption. Summary of the invention

[0004] The problem solved by the present invention is how to reduce the power consumption in standby mode and how to wake up the outdoor unit when the air conditioner needs to work.

[0005] To solve the above problems, in a first aspect, an embodiment of the present invention provides a power supply system, the power supply system comprising an indoor unit and an outdoor unit, the indoor unit comprising a first power module, a first control module and a first switch module, the outdoor unit comprising a second power module, a second control module, a second communication circuit, a second switch module and a wake-up circuit, the first power module is electrically connected to the first switch module and the first control module respectively, the first power module, the first switch module, the wake-up circuit, the second power module and the second control module are electrically connected in sequence, the first control module, the first switch module, the second communication circuit and the wake-up circuit are electrically connected in sequence, the second switch module is connected in parallel to the wake-up circuit, and the second switch module is electrically connected to the second control module;

[0006] The first control module is used to generate a first control signal when receiving a power-on instruction, and transmit the first control signal to the first switch module;

[0007] The first switch module is used to switch to a first state in response to the first control signal, so that the first control module is connected to the second communication circuit and the first power module is connected to the wake-up circuit;

[0008] The first control module is further configured to generate a wake-up signal upon receiving a power-on instruction, and transmit the wake-up signal to the wake-up circuit through the first switch module and the second communication circuit;

[0009] The wake-up circuit is used to close in response to the wake-up signal, so that the first power module supplies power to the second control module through the second power module to wake up the second control module;

[0010] The second control module is used for controlling the second switch module to close after being awakened, so that the external unit can work normally.

[0011] It can be understood that in the power supply module of the external unit power supply type, only when the power-on command is received, the control module will control the first switch switching module to switch to the first state so that the first control module is connected to the second communication circuit and the first power supply module is connected to the wake-up circuit, and transmit the generated wake-up signal to the wake-up circuit through the first switch module and the second communication circuit to wake up the second control module. At the same time, after being awakened, the second control module controls the second switch module to close and controls the wake-up circuit to disconnect so that the external unit can work normally; at other times, due to the existence of the switch module and the wake-up circuit, the first power supply module cannot be directly connected to the second power supply module and power the second control module, so that the indoor unit circuit and the outdoor unit circuit are both in an open circuit state, which can effectively reduce the power consumption of the power supply system in standby mode.

[0012] In an optional embodiment, the indoor unit further includes a first communication circuit, and the first power module, the first switch module, the first communication circuit and the second communication circuit are electrically connected in sequence;

[0013] The first control module is further used to control the first switch module to switch to a second state after the second control module is awakened, so that the first switch module is connected to the first communication circuit;

[0014] The second control module is further configured to control the wake-up circuit to be disconnected after being awakened.

[0015] It can be understood that after the second control module is awakened, the first switch module is switched to the second state so that the first switch module is connected to the first communication circuit, so that the indoor unit and the outdoor unit can communicate normally through the first communication circuit and the second communication circuit; at the same time, by controlling the wake-up circuit to disconnect, the wake-up circuit can be broken to prevent the wake-up circuit from affecting the data transmission of the second communication circuit.

[0016] In an optional implementation, the indoor unit further includes a voltage stabilizing circuit, one end of the voltage stabilizing circuit is electrically connected to the N end of the first power module, and the other end of the voltage stabilizing circuit is electrically connected to the first switch module.

[0017] It can be understood that by providing a voltage stabilizing circuit, the voltage between the N terminal of the first power module and the L terminal of the first power module can be effectively stabilized.

[0018] In an optional embodiment, the first switch module includes a single-pole double-throw switch, the active end of the single-pole double-throw switch is electrically connected between the wake-up circuit and the L end of the first power supply module, the first fixed end of the single-pole double-throw switch is electrically connected to the voltage stabilizing circuit, the second fixed end of the single-pole double-throw switch is electrically connected to the second communication circuit, and the other end of the first communication circuit is electrically connected between the second fixed end of the single-pole double-throw switch and the second communication circuit; wherein, when the active end of the single-pole double-throw switch is connected to the second fixed end, the first switch module is in a first state, and when the active end of the single-pole double-throw switch is connected to the first fixed end, the first switch module is in a second state.

[0019] It can be understood that the related functions of the first switch module can be effectively implemented by a single-pole double-throw switch.

[0020] In an optional embodiment, the voltage stabilizing circuit includes a first voltage stabilizing diode, a first resistor and a first capacitor, the first voltage stabilizing diode, the first resistor and the first capacitor are connected in parallel, the anode of the first voltage stabilizing diode is electrically connected to the N terminal of the first power module, and the cathode of the first voltage stabilizing diode is electrically connected between the first communication circuit and the first fixed end of the single-pole double-throw switch.

[0021] In an optional embodiment, the wake-up circuit includes a first switch tube, a second switch tube, a relay and a thermistor, the first switch module is electrically connected to the base of the first switch tube, the collector of the first switch tube is electrically connected to one end of the relay, the emitter of the first switch tube is electrically connected to the emitter of the second switch tube, the output end of the second communication circuit is electrically connected to the base of the second switch tube, the collector of the second switch tube is electrically connected to the other end of the relay, and the first switch module is electrically connected to the second power supply module after being connected in series with the thermistor and the normally open contact of the relay;

[0022] The first switch tube is used to be turned on after the switch module is switched to the first state;

[0023] The first control module is used to transmit the wake-up signal to the second switch tube through the second communication circuit;

[0024] The second switch tube is used to respond to the wake-up signal and be turned on to power on the relay;

[0025] The relay is used to control the normally open contact of the relay to close after power-on, so that the first power module supplies power to the second control module through the second power module to wake up the second control module.

[0026] In an optional embodiment, the wake-up circuit also includes a first diode, a second diode, a third diode and a second capacitor. The first switch module is electrically connected to the base of the first switch tube after the anode and cathode of the first diode are connected in series. The first switch module is electrically connected to the normally open contact of the relay after the thermistor and the anode and cathode of the third diode are connected in series. The anode of the second diode is electrically connected between the thermistor and the first switch module, and the cathode of the second diode is electrically connected to the other end of the relay after the second capacitor is connected in series.

[0027] It can be understood that by providing the second diode, the current of the relay circuit can be prevented from flowing to the thermistor circuit; and the third diode can prevent the voltage of the second power module from flowing back to the first power module.

[0028] In an optional embodiment, the wake-up circuit also includes a second Zener diode and a third capacitor, the anode of the second Zener diode is electrically connected to the collector of the second switching tube, the cathode of the second Zener diode is electrically connected to the other end of the relay, and the third capacitor is connected in parallel with the second Zener diode.

[0029] It can be understood that by setting the second voltage regulator tube and the third capacitor, the voltage value output by the second switch tube to the relay can be effectively stabilized, thereby ensuring that the relay can be powered on stably; at the same time, the second voltage regulator tube can also prevent the second switch tube from being damaged by large current when the distribution line is reversed.

[0030] In an optional embodiment, the second control module is further used to control the second switch module to disconnect when receiving a shutdown instruction to stop transmitting operation data to the first control module;

[0031] The first control module is further configured to control the first switch module to switch to a third state when the first control module fails to receive the operating data transmitted by the external unit within a preset time.

[0032] It can be understood that after receiving the shutdown command, the second switch module is controlled to disconnect, so that the second control module loses power and the outdoor unit cannot work normally, thereby ensuring low power consumption when the outdoor unit is in standby mode; if the first control module does not receive operating data within a certain period of time, the switch module is controlled to switch to the third state to put the indoor unit in an off-circuit state, thereby reducing the power consumption of the indoor unit when it is in standby mode.

[0033] In a second aspect, an embodiment of the present invention provides a power supply system, the power supply system comprising an indoor unit and an outdoor unit, the indoor unit comprising a first power module, a first control module and a first switch module, the outdoor unit comprising a second power module, a second control module, a second switch module and a thermistor, the first power module is electrically connected to the first switch module and the first control module respectively, the switch module, the thermistor and the second power module are electrically connected in sequence, and the second control module is electrically connected to the second power module and the second switch module respectively;

[0034] The first control module is used to generate a second control signal when receiving a power-on instruction;

[0035] The first switch module is used to switch to a second state in response to the second control signal, so that the first power module supplies power to the second control module through the thermistor and the second power module to wake up the second control module;

[0036] The second control module is further used for controlling the second switch module to close after the external unit is awakened, so as to enable the external unit to work normally.

[0037] It can be understood that in the power supply module of the indoor unit power supply type, only when the power-on command is received will the control module control the first switch switching module to switch to the second state so that the first power module supplies power to the second control module through the thermistor and the second power module to wake up the second control module; and after the second control module is awakened, it will inevitably drive the motor to run, resulting in an increase in the current on the line and causing the line to heat up, so that the resistance value of the thermistor gradually increases; in order to ensure that the outdoor unit can operate normally, the second control module is also used to control the closing of the second switch module after being awakened, so that the first power module can continue to supply power to the second control module through the second power module to ensure the normal operation of the outdoor unit; the practice of waking up the outdoor unit only when it is turned on can effectively reduce the power consumption of the power supply system in standby mode.

[0038] In a third aspect, an embodiment of the present invention provides an air conditioner, comprising a power supply system as described in any one of the aforementioned embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 A circuit structure block diagram of a power supply system provided in accordance with a first embodiment of the present invention;

[0040] Figure 2 A circuit diagram of a power supply system provided for a first embodiment of the present invention;

[0041] Figure 3 A circuit structure block diagram of a power supply system provided in accordance with a second embodiment of the present invention;

[0042] Figure 4A circuit diagram of a power supply system provided in accordance with a second embodiment of the present invention.

[0043] Icons: 10-power supply system; 100-indoor unit; 110-first control module; 120-first power module; 130-first switch module; 140-voltage stabilizing circuit; 150-first communication circuit; 200-outdoor unit; 210-wake-up circuit; 220-second communication circuit; 230-second power module; 240-second control module; 250-second switch module; PTC-thermistor; K1-single-pole double-throw switch; D4-fourth diode; ZD1-first voltage stabilizing tube; R1-first resistor; C1-first capacitor; Q1-first switch tube; Q2-second switch tube; RY1-relay; D1-first diode; D2-second diode; D3-third diode; C2-second capacitor; ZD2-second voltage stabilizing tube; C3-third capacitor. DETAILED DESCRIPTION

[0044] The following will be combined with the accompanying drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0045] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present invention.

[0046] As users now have higher and higher requirements for the energy consumption of air conditioners, the existing practice of directly using communication lines to directly lead AC power from the indoor unit to the outdoor unit, which consumes a lot of unnecessary energy, needs to be improved. Therefore, the present invention aims to provide a power supply system and air conditioner that can save energy to meet the needs of users.

[0047] First embodiment

[0048] Generally, the power supply mode of the air conditioner can be divided into indoor power supply and outdoor power supply. For the air conditioner with outdoor power supply, the main control board is in the outdoor unit 200, and the indoor unit 100 only includes a relatively simple indoor unit 100 circuit board, and the outdoor power supply mostly uses 380V three-phase electricity; while for the air conditioner with indoor power supply, the main control board is installed in the indoor unit 100.

[0049] The embodiment of the present invention provides a power supply system 10, which is mainly used in an air conditioner with external power supply. Figure 1, is a circuit structure block diagram of a power supply system 10 provided in an embodiment of the present invention. The power supply system 10 includes: an indoor unit 100 and an outdoor unit 200, the indoor unit 100 includes a first power module 120, a first control module 110, a first communication circuit 150, a voltage stabilizing circuit 140 and a first switch module 130, and the outdoor unit 200 includes a second power module 230, a second control module 240, a second communication circuit 220, a second switch module 250 and a wake-up circuit 210.

[0050] Among them, the first power module 120 is electrically connected to the first switch module 130 and the first control module 110 respectively, the first power module 120, the first switch module 130, the wake-up circuit 210, the second power module 230 and the second control module 240 are electrically connected in sequence, the first power module 120, the first switch module 130, the first communication circuit 150 and the second communication circuit 220 are electrically connected in sequence, the first control module 110, the first switch module 130, the second communication circuit 220 and the wake-up circuit 210 are electrically connected in sequence, the second switch module 250 is connected in parallel with the wake-up circuit 210, the second switch module 250 is electrically connected to the second control module 240, one end of the voltage stabilizing circuit 140 is electrically connected to the first power module 120, and the other end of the voltage stabilizing circuit 140 is electrically connected to the first switch module 130.

[0051] The first power supply module 120 is electrically connected to the first control module 110 to provide a working voltage for the first control module 110. In an optional embodiment, the first power supply module 120 includes a power supply, a rectifier bridge and a transformer, which are electrically connected in sequence. 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 modules (such as the first switch module 130, the first communication circuit 150, etc.).

[0052] It should be noted that the output end of the first power module 120 includes an N end and an L end.

[0053] The first switch module 130 is used to switch states under the control of the first control module 110. It should be noted that the first switch module 130 may include three states, namely, a first state, a second state, and a third state. Usually, when the power supply system 10 is in the standby state, the first switch module 130 is in the third state; when the power supply system 10 is in the working mode, the first switch module 130 may be in the first state or the second state.

[0054] Among them, when the first switch module 130 is in the first state, the loop of the first power module 120, the first switch module 130 and the second communication circuit 220 is connected; when the first switch module 130 is in the second state, the loop of the first power module 120, the first communication circuit 150 and the second communication circuit 220 is connected; when the first switch module 130 is in the third state, the first switch module 130 and the first communication circuit 150 are disconnected, and the first switch module 130 and the second communication circuit 220 are disconnected.

[0055] See also Figure 2 , is a circuit diagram of the power supply system 10 provided by the present invention. Figure 2 It can be seen that the first switch module 130 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 210 and the L end of the first power supply module 120, the first fixed end of the single-pole double-throw switch K1 is electrically connected to the voltage stabilizing circuit 140, the second fixed end of the single-pole double-throw switch K1 is electrically connected to the second communication circuit 220, and the other end of the first communication circuit 150 is electrically connected between the second fixed end of the single-pole double-throw switch K1 and the second communication circuit 220.

[0056] Specifically, when the active end of the single-pole double-throw switch K1 is connected to the second fixed end, the first switch module 130 is in a first state; when the active end of the single-pole double-throw switch K1 is connected to the first fixed end, the first switch module 130 is in a second state; when the active end of the single-pole double-throw switch K1 is suspended (neither connected to the second fixed end nor to the first fixed end), the first switch module 130 is in a third state.

[0057] In an optional embodiment, the first switch module 130 also includes a fourth diode D4, and the second fixed end of the single-pole double-throw switch K1 is electrically connected to the second communication circuit 220 after being connected in series with the anode and cathode of the fourth diode D4, and the other end of the first communication circuit 150 is electrically connected between the cathode of the fourth diode D4 and the second communication circuit 220.

[0058] It can be understood that when the active end of the single-pole double-throw switch K1 is connected to the second fixed end, the L end of the first power supply module 120 is connected to the second communication circuit 220 to power the second communication circuit 220. At this time, the first control module 110 can transmit the generated wake-up signal to the wake-up circuit 210 through the second communication circuit 220.

[0059] One end of the voltage stabilizing circuit 140 is connected to the N end of the first power module 120, and the other end of the voltage stabilizing circuit 140 is electrically connected to the first switch module 130. It can be understood that when the first switch module 130 is in the second state, the other end of the voltage stabilizing circuit 140 is connected to the L end of the first power module 120.

[0060] Please continue reading Figure 2 The voltage stabilizing circuit 140 includes a first voltage stabilizing tube ZD1, a first resistor R1 and a first capacitor C1. The first voltage stabilizing tube ZD1, the first resistor R1 and the first capacitor C1 are connected in parallel. The anode of the first voltage stabilizing tube ZD1 is electrically connected to the N terminal of the first power module 120. The cathode of the first voltage stabilizing tube ZD1 is electrically connected between the first communication circuit 150 and the first fixed terminal of the single-pole double-throw switch K1.

[0061] It can be understood that by setting the voltage stabilizing circuit 140, when the first switch module 130 is in the second state, a voltage drop can be ensured between the N terminal and the L terminal of the first switch module 130, thereby avoiding a short circuit problem caused by a direct connection between the N terminal and the L terminal of the first switch module 130.

[0062] The first communication circuit 150 is used to implement data exchange between the indoor unit 100 and the outdoor unit 200. In an optional embodiment, the indoor unit 100 further includes a fifth diode D5, an anode of the fifth diode D5 is electrically connected to the first communication circuit 150, and a cathode of the fifth diode D5 is electrically connected between the second communication circuit 220 and the second fixed end of the single-pole double-throw switch K1.

[0063] The first control module 110 is used to control the switching state of the first switch module 130. Specifically, the first control module 110 is used to generate a first control signal when receiving a power-on instruction, and the first control signal is used to instruct the first switch module 130 to switch to the first state; the first control module 110 is also used to control the first switch module 130 to switch to the second state after the second control module 240 is awakened; the first control module 110 is also used to control the switch module to switch to the third state if the operation data transmitted by the external unit 200 is not received within a preset time after the second control module 240 is awakened.

[0064] It can be understood that by controlling the first switch module 130 to switch to the first state, the electrical signal of the first power supply module 120 can be transmitted to the second communication circuit 220 and the wake-up circuit 210 through the first switch module 130, so that the first communication circuit 150 and the wake-up circuit 210 have working power; by controlling the first switch module 130 to switch to the second state, the first communication circuit 150 and the second communication circuit 220 can communicate normally; by controlling the first switch module 130 to switch to the third state, the circuit of the indoor unit 100 can be disconnected to avoid power consumption of the circuit of the indoor unit 100.

[0065] In addition, the first control module 110 is also used to generate a wake-up signal when receiving a power-on command, and after the first switch module 130 switches to the first state, the wake-up signal is transmitted to the wake-up circuit 210 through the first switch module 130 and the second communication circuit 220. At this time, due to the reverse connection of the fifth diode, the wake-up circuit 210 will not affect the first communication circuit 150.

[0066] The first control module 110 is further configured to control the first switch module 130 to switch to the third state when the first control module 110 does not receive the operating data transmitted by the external unit 200 within a preset time.

[0067] If the first control module 110 does not receive the operating data transmitted by the outdoor unit 200 within the preset time, it indicates that the outdoor unit 200 has stopped working. At this time, the first switch module 130 is controlled to switch to the third state to put the indoor unit 100 in an off-circuit state, thereby reducing the power consumption of the indoor unit 100 when in standby mode.

[0068] The second communication circuit 220 is used to communicate with the first communication circuit 150 to exchange data between the indoor unit 100 and the outdoor unit 200. For example, the second communication circuit 220 can be used to transmit the wake-up signal generated by the first control module 110 to the wake-up circuit 210.

[0069] The wake-up circuit 210 is used to be closed in response to the wake-up signal transmitted by the first control module 110 , and is used to be opened under the control of the second control module 240 after the second control module 240 is awakened.

[0070] It can be understood that when the wake-up circuit 210 is closed, the first power module 120 is connected to the second power module 230 , so that the first power module 120 supplies power to the second control module 240 through the second power module 230 to wake up the second control module 240 .

[0071] After the second control module 240 is awakened, the awakening circuit 210 does not perform operations such as data exchange. At this time, maintaining the awakening circuit 210 in a closed state will affect the data transmission of the second communication circuit 220. Therefore, it is disconnected under the control of the second control module 240 to avoid affecting the data exchange.

[0072] Please continue reading Figure 2The wake-up circuit 210 includes a first switch tube Q1, a second switch tube Q2, a relay RY1 and a thermistor PTC. The first switch module 130 is electrically connected to the base of the first switch tube Q1, the collector of the first switch tube Q1 is electrically connected to one end of the relay RY1, the emitter of the first switch tube Q1 is electrically connected to the emitter of the second switch tube Q2, the output end of the second communication circuit 220 is electrically connected to the base of the second switch tube Q2, the collector of the second switch tube Q2 is electrically connected to the other end of the relay RY1, and the first switch module 130 is electrically connected to the second power supply module 230 after being connected in series with the thermistor PTC and the normally open contact of the relay RY1. Among them, the base of the second switch tube Q2 is used to receive the wake-up signal transmitted by the second communication circuit 220, and the second switch tube Q2 is used to respond to the wake-up signal and turn on to power on the relay RY1. The relay RY1 is used to control the normally open contact of the relay RY1 to close after power-on, so that the first power module 120 supplies power to the second control module 240 through the second power module 230 to wake up the second control module 240.

[0073] In such Figure 2 In the embodiment shown, the first switch tube Q1 and the second switch tube Q2 are both triodes. In other embodiments, the first switch tube and the second switch tube may also be switch devices such as thyristors, relays, and MOS tubes.

[0074] It can be understood that when the first switch module 130 switches to the first state, the first power module 120 transmits an electrical signal to the second communication circuit 220 and the base of the first switch tube Q1 through the first switch module 130, and the first switch tube Q1 is turned on at this time; after the base of the second switch tube Q2 receives the wake-up signal, the second switch tube Q2 is also turned on, so that the first switch tube Q1, the second switch tube Q2 and the relay RY1 form a closed loop, and the relay RY1 is powered on to control the normally open contact of the relay RY1 to close. At this time, the L end of the first power module 120 is connected to the second power module 230 through the thermistor PTC and the normally open contact of the relay RY1.

[0075] In an optional embodiment, the wake-up circuit 210 also includes a first diode D1, a second diode D2, a third diode D3 and a second capacitor C2. The first switch module 130 is electrically connected to the base of the first switch tube Q1 after the anode and cathode of the first diode D1 are connected in series. The first switch module 130 is electrically connected to the normally open contact of the relay RY1 after the anode and cathode of the thermistor PTC and the third diode D3 are connected in series. The anode of the second diode D2 is electrically connected between the thermistor PTC and the first switch module 130. The cathode of the second diode D2 is electrically connected to the other end of the relay RY1 after the second capacitor C2 is connected in series.

[0076] It can be understood that since the first diode D1 is electrically connected to the second communication circuit 220 in reverse, the signal inside the wake-up circuit 210 will not affect the normal operation of the second communication circuit 220; at the same time, the second diode D2 is connected to the L end of the first power supply module 120 in reverse, which can also prevent the signal inside the wake-up circuit 210 from affecting the power supply signal; and by reversely connecting the third diode D3, the electrical signal of the external unit 200 can be effectively prevented from affecting the internal unit 100.

[0077] In another optional embodiment, the wake-up circuit 210 also includes a second voltage regulator tube ZD2 and a third capacitor C3, the anode of the second voltage regulator tube ZD2 is electrically connected to the collector of the second switching tube Q2, the cathode of the second voltage regulator tube ZD2 is electrically connected to the other end of the relay RY1, and the third capacitor C3 is connected in parallel with the second voltage regulator tube ZD2.

[0078] It can be understood that by setting the second voltage regulator tube ZD2 and the third capacitor C3, the voltage value output by the second switch tube Q2 to the relay RY1 can be effectively stabilized, thereby ensuring that the relay RY1 can be powered on stably; at the same time, the second voltage regulator tube ZD2 can also prevent the second switch tube Q2 from being damaged by large current when the distribution line is reversed.

[0079] After the second control module 240 is awakened, the first switch module 130 is switched to the second state so that the first switch module 130 is connected to the first communication circuit 150, so that the indoor unit 100 and the outdoor unit 200 can communicate normally through the first communication circuit 150 and the second communication circuit 220; at the same time, by controlling the wake-up circuit 210 to disconnect, the wake-up circuit 210 can be disconnected to prevent the wake-up circuit 210 from affecting the data transmission of the second communication circuit 220.

[0080] The second control module 240 is used to control the second switch module 250 to close after being awakened.

[0081] It can be understood that after the second control module 240 is awakened, it is necessary to control the operation of the motor at the rear end, which causes the load of the external unit 200 to increase, and causes the current on the line to increase and the line to heat up. Since the thermistor PTC is connected in series with the normally open contact of the relay RY1, the thermistor PTC will increase to infinity as the temperature gradually increases. At this time, the current transmitted through the thermistor PTC is not enough to bear the load of the external unit 200. Therefore, it is necessary to control the second switch module 250 to close to ensure that the external unit 200 can obtain a sufficiently large current.

[0082] The second control module 240 is further configured to control the wake-up circuit 210 to be turned off after being awakened.

[0083] The second control module 240 is also used to control the second switch module 250 to disconnect when receiving a shutdown command to stop transmitting operation data to the first control module 110. That is, when the external unit 200 is not needed to work, the second control module 240 directly controls the second switch module 250 to disconnect, so that the second control module 240 loses power and the external unit 200 cannot work normally, thereby ensuring low power consumption when the external unit 200 is in standby mode.

[0084] The principle of the present application is as follows: upon receiving a power-on command, the first control module 110 controls the active end of the single-pole double-throw switch K1 to be connected to the second fixed end, and transmits a wake-up signal to the base of the second switch tube Q2, so that the relay RY1 is turned on and wakes up the second control module 240, and then the second control module 240 controls the second switch module 250 to be closed so that the indoor unit 100 can stably output a power signal to the outdoor unit 200; in order to ensure normal data interaction between the first communication circuit 150 and the second communication circuit 220, the first control module 110 controls the active end of the single-pole double-throw switch K1 to be connected to the first fixed end, and the second control module 240 controls the second switch module 250 to be disconnected so that the wake-up circuit 210 is disconnected, at which time the indoor unit 100 and the outdoor unit 200 can operate normally; when shutdown is required, the second control module 240 directly controls the second switch module 250 to be disconnected, and the first control module 110 controls the active end of the single-pole double-throw switch K1 to be suspended.

[0085] Second embodiment

[0086] The embodiment of the present invention provides a power supply system 10, which is mainly used in air conditioners with indoor power supply. It should be noted that the basic principle and technical effects of the power supply system 10 provided in this embodiment are the same as those of the above embodiment. For the sake of brief description, the parts not mentioned in this embodiment can refer to the corresponding contents in the above embodiment. Figure 3 , which is a circuit structure block diagram of a power supply system 10 provided in an embodiment of the present invention. The power supply system 10 includes an indoor unit 100 and an outdoor unit 200. The indoor unit 100 includes a first power module 120, a first control module 110 and a first switch module 130. The outdoor unit 200 includes a second power module 230, a second control module 240, a second switch module 250 and a thermistor PTC. The first power module 120 is electrically connected to the first switch module 130 and the first control module 110 respectively. The switch module, the thermistor PTC and the second power module 230 are electrically connected in sequence. The second control module 240 is electrically connected to the second power module 230 and the second switch module 250 respectively.

[0087] The first control module 110 is configured to generate a second control signal when receiving a power-on instruction.

[0088] The first switch module 130 is used to switch to the second state in response to the second control signal, so that the first power module 120 supplies power to the second control module 240 through the thermistor PTC and the second power module 230 to wake up the second control module 240 .

[0089] The second control module 240 is further used to control the second switch module 250 to close after being awakened, so that the external unit 200 can work normally.

[0090] Please refer to Figure 2 and Figure 4 Compared with the power supply system 10 provided in the first embodiment, the power supply system 10 provided in the present invention has a jumper (such as Figure 4 At A2 in the figure), the third diode D3 is short-circuited with the normally open contact of the relay RY1; at the same time, the routing of the L end of the first power module 120 is changed so that it is connected to the first fixed end of the single-pole double-throw switch K1 (such as Figure 4 at A1 in the figure).

[0091] Therefore, the principle of this embodiment is: when receiving the power-on command, the first control module 110 controls the active end of the single-pole double-throw switch K1 to be connected to the first fixed end of the single-pole double-throw switch K1, so that the L end of the first power module 120 is connected to the second power module 230 through the first fixed end of the single-pole double-throw switch K1, the thermistor PTC, and the jumper to wake up the second control module 240; then the second control module 240 controls the second switch module 250 to close, ensuring that the indoor unit 100 stably and continuously outputs the power signal to the outdoor unit 200.

[0092] It can be understood that in the power supply module of the indoor power supply type, only when the power-on command is received will the control module control the first switch switching module to switch to the second state so that the first power module 120 supplies power to the second control module 240 through the thermistor PTC and the second power module 230 to wake up the second control module 240; and after the second control module 240 is awakened, it will inevitably drive the motor to run, resulting in an increase in the current on the line and causing the line to heat up, so that the resistance value of the thermistor PTC gradually increases; in order to ensure that the outdoor unit 200 can operate normally, the second control module 240 is also used to control the second switch module 250 to close after being awakened, so that the first power module 120 can continue to supply power to the second control module 240 through the second power module 230 to ensure the normal operation of the outdoor unit 200; the practice of waking up the outdoor unit 200 only when it is turned on can effectively reduce the power consumption of the power supply system 10 in standby mode.

[0093] The present invention further provides an air conditioner, comprising the power supply system 10 provided in the first embodiment or the second embodiment.

[0094] Combining the first and second embodiments, it can be seen that on the basis of the first embodiment, the power supply system 10 of the external power supply type can be converted into the power supply system 10 of the internal power supply type by slightly changing the wiring. It has strong compatibility and good adaptability, can effectively save development resources, reduce costs and improve efficiency.

[0095] To sum up, in the power supply system and air conditioner provided by the present invention, the control module will control the first switch switching module to switch to the first state only when receiving the power-on command, so that the first control module is connected to the second communication circuit and the first power supply module is connected to the wake-up circuit, and transmit the generated wake-up signal to the wake-up circuit through the first switch module and the second communication circuit to wake up the second control module. At the same time, after being awakened, the second control module controls the second switch module to close and controls the wake-up circuit to disconnect, so that the outdoor unit can work normally; at other times, due to the existence of the switch module and the wake-up circuit, the first power supply module cannot be directly connected to the second power supply module and supply power to the second control module, so that the indoor unit circuit and the outdoor unit circuit are both in an open circuit state, which can effectively reduce the power consumption of the power supply system in standby mode.

[0096] Although the present invention is disclosed as 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 shall be subject to the scope defined by the claims.

Claims

1. A power supply system (10), characterized in that: The power supply system (10) comprises an indoor unit (100) and an outdoor unit (200), wherein the indoor unit (100) comprises a first power module (120), a first control module (110) and a first switch module (130), and the outdoor unit (200) comprises a second power module (230), a second control module (240), a second communication circuit (220), a second switch module (250) and a wake-up circuit (210), wherein the first power module (120) is electrically connected to the first switch module (130) and the first control module (110), respectively. The first power module (120), the first switch module (130), the wake-up circuit (210), the second power module (230) and the second control module (240) are electrically connected in sequence; the first control module (110), the first switch module (130), the second communication circuit (220) and the wake-up circuit (210) are electrically connected in sequence; the second switch module (250) is connected in parallel with the wake-up circuit (210); and the second switch module (250) is electrically connected with the second control module (240); The first control module (110) is used to generate a first control signal when receiving a power-on instruction, and transmit the first control signal to the first switch module (130); The first switch module (130) is used to switch to a first state in response to the first control signal, so that the first control module (110) is connected to the second communication circuit (220) and the first power module (120) is connected to the wake-up circuit (210); The first control module (110) is further configured to generate a wake-up signal upon receiving a power-on instruction, and transmit the wake-up signal to the wake-up circuit (210) via the first switch module (130) and the second communication circuit (220); The wake-up circuit (210) is used to close in response to the wake-up signal, so that the first power module (120) supplies power to the second control module (240) through the second power module (230) to wake up the second control module (240); The second control module (240) is used to control the second switch module (250) to close after being awakened, so as to enable the external unit (200) to work normally; The second control module (240) is further used to control the second switch module (250) to be disconnected when receiving a shutdown instruction so as to stop transmitting operation data to the first control module (110); The first control module (110) is further used to control the first switch module (130) to switch to a third state when the first control module (110) fails to receive the operating data transmitted by the external unit (200) within a preset time.

2. The power supply system (10) according to claim 1, characterized in that: The indoor unit (100) further comprises a first communication circuit (150), and the first power module (120), the first switch module (130), the first communication circuit (150) and the second communication circuit (220) are electrically connected in sequence; The first control module (110) is further used to control the first switch module (130) to switch to a second state after the second control module (240) is awakened, so that the first switch module (130) is connected to the first communication circuit (150); The second control module (240) is further used to control the wake-up circuit (210) to disconnect after being awakened.

3. The power supply system (10) according to claim 2, characterized in that: The indoor unit (100) further comprises a voltage stabilizing circuit (140), one end of the voltage stabilizing circuit (140) being electrically connected to the N end of the first power module (120), and the other end of the voltage stabilizing circuit (140) being electrically connected to the first switch module (130).

4. The power supply system (10) according to claim 3, characterized in that: The first switch module (130) 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 (210) and the L end of the first power module (120), the first fixed end of the single-pole double-throw switch (K1) is electrically connected to the voltage stabilizing circuit (140), the second fixed end of the single-pole double-throw switch (K1) is electrically connected to the second communication circuit (220), and the other end of the first communication circuit (150) is electrically connected between the second fixed end of the single-pole double-throw switch (K1) and the second communication circuit (220); wherein, when the active end of the single-pole double-throw switch (K1) is connected to the second fixed end, the first switch module (130) is in a first state, and when the active end of the single-pole double-throw switch (K1) is connected to the first fixed end, the first switch module (130) is in a second state.

5. The power supply system (10) according to claim 4, characterized in that: The voltage stabilizing circuit (140) comprises a first voltage stabilizing tube (ZD1), a first resistor (R1) and a first capacitor (C1); the first voltage stabilizing tube (ZD1), the first resistor (R1) and the first capacitor (C1) are connected in parallel; an anode of the first voltage stabilizing tube (ZD1) is electrically connected to an N-terminal of the first power module (120); and a cathode of the first voltage stabilizing tube (ZD1) is electrically connected between the first communication circuit (150) and a first fixed end of the single-pole double-throw switch (K1).

6. The power supply system (10) according to claim 1, characterized in that: The wake-up circuit (210) comprises a first switch tube (Q1), a second switch tube (Q2), a relay (RY1) and a thermistor (PTC); the first switch module (130) is electrically connected to the base of the first switch tube (Q1); the collector of the first switch tube (Q1) is electrically connected to one end of the relay (RY1); the emitter of the first switch tube (Q1) is electrically connected to the emitter of the second switch tube (Q2); the output end of the second communication circuit (220) is electrically connected to the base of the second switch tube (Q2); the collector of the second switch tube (Q2) is electrically connected to the other end of the relay (RY1); and the first switch module (130) is electrically connected to the second power supply module (230) after being connected in series to the thermistor (PTC) and the normally open contact of the relay (RY1); The first switch tube (Q1) is used to be turned on after the switch module is switched to the first state; The first control module (110) is used to transmit the wake-up signal to the second switch tube (Q2) through the second communication circuit (220); The second switch tube (Q2) is used to respond to the wake-up signal and be turned on to power on the relay (RY1); The relay (RY1) is used to control the normally open contact of the relay (RY1) to close after power is turned on, so that the first power module (120) supplies power to the second control module (240) through the second power module (230) to wake up the second control module (240).

7. The power supply system (10) according to claim 6, characterized in that: The wake-up circuit (210) further comprises a first diode (D1), a second diode (D2), a third diode (D3) and a second capacitor (C2); the first switch module (130) is connected in series with the anode and cathode of the first diode (D1) and then electrically connected to the base of the first switch tube (Q1); the first switch module (130) is connected in series with the thermistor (PTC) and the anode and cathode of the third diode (D3) and then electrically connected to the normally open contact of the relay (RY1); the anode of the second diode (D2) is electrically connected between the thermistor (PTC) and the first switch module (130); and the cathode of the second diode (D2) is connected in series with the second capacitor (C2) and then electrically connected to the other end of the relay (RY1).

8. The power supply system (10) according to claim 6, characterized in that: The wake-up circuit (210) further comprises a second voltage regulator tube (ZD2) and a third capacitor (C3); the anode of the second voltage regulator tube (ZD2) is electrically connected to the collector of the second switch tube (Q2); the cathode of the second voltage regulator tube (ZD2) is electrically connected to the other end of the relay (RY1); and the third capacitor (C3) is connected in parallel to the second voltage regulator tube (ZD2).

9. A power supply system (10), characterized in that: The power supply system (10) comprises an indoor unit (100) and an outdoor unit (200); the indoor unit (100) comprises a first power module (120), a first control module (110) and a first switch module (130); the outdoor unit (200) comprises a second power module (230), a second control module (240), a second switch module (250) and a thermistor (PTC); the first power module (120) is electrically connected to the first switch module (130) and the first control module (110), respectively; the first switch module (130), the thermistor (PTC) and the second power module (230) are electrically connected in sequence; and the second control module (240) is electrically connected to the second power module (230) and the second switch module (250), respectively; The first control module (110) is used to generate a second control signal when receiving a power-on instruction; The first switch module (130) is used to switch to a second state in response to the second control signal, so that the first power module (120) supplies power to the second control module (240) through the thermistor (PTC) and the second power module (230) to wake up the second control module (240); The second control module (240) is further used to control the second switch module (250) to close after being awakened, so as to enable the external unit (200) to work normally; The second control module (240) is further used to control the second switch module (250) to be disconnected when receiving a shutdown instruction so as to stop transmitting operation data to the first control module (110); The first control module (110) is further used to control the first switch module (130) to switch to a third state when the first control module (110) fails to receive the operating data transmitted by the external unit (200) within a preset time.

10. An air conditioner, characterized in that: Comprising a power supply system (10) as claimed in any one of claims 1 to 9.

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