CN-117091267-B - Air conditioner control circuit

CN117091267BCN 117091267 BCN117091267 BCN 117091267BCN-117091267-B

Abstract

The present application relates to an air conditioner control circuit. The circuit comprises a remote control signal receiving module, an inner machine micro-control unit, an inner machine communication module, an outer machine micro-control unit, an outer machine communication module, a storage battery micro-control unit, a storage battery communication module and a storage battery, and the air conditioner control circuit further comprises a power consumption control module. The remote control signal receiving module is connected with the internal machine micro-control unit, the internal machine micro-control unit is connected with the internal machine communication module, the external machine communication module and the storage battery communication module are in communication connection, the external machine communication module is connected with the external machine micro-control unit, the storage battery communication module is connected with the storage battery micro-control unit, and the power consumption control module is connected with the external machine micro-control unit, the storage battery micro-control unit and the storage battery respectively. According to the application, through the arrangement of the power consumption control module, the external machine can be awakened under the condition of complete power failure, and the technical problem that the external-driving internal air conditioner cannot meet the requirement of ultra-low power consumption standby is solved.

Inventors

Meng Fanao
Wu Sangchen
YUAN YIGE
LIANG SHANG

Assignees

珠海格力电器股份有限公司

Dates

Publication Date: 20260508
Application Date: 20230908

Claims (11)

1. The air conditioner control circuit comprises a remote control signal receiving module, an inner machine micro control unit, an inner machine communication module, an outer machine micro control unit, an outer machine communication module, a storage battery micro control unit, a storage battery communication module and a storage battery, and is characterized by further comprising a power consumption control module, wherein: The remote control signal receiving module is connected with the internal machine micro-control unit, the internal machine micro-control unit is connected with the internal machine communication module, the external machine communication module and the storage battery communication module are mutually in communication connection, the external machine communication module is connected with the external machine micro-control unit, the storage battery communication module is connected with the storage battery micro-control unit, and the power consumption control module is respectively connected with the external machine micro-control unit, the storage battery micro-control unit and the storage battery; The remote control signal receiving module is used for receiving an external switch signal, the internal machine micro-control unit is used for controlling the internal machine communication module to transmit the switch signal to the external machine communication module and the storage battery communication module, the external machine micro-control unit is used for receiving the switch signal transmitted by the external machine communication module, the storage battery micro-control unit is used for receiving the switch signal transmitted by the storage battery communication module, and the external machine micro-control unit and the storage battery micro-control unit are also used for respectively controlling the power consumption control module to form a fit according to the switch signal so as to enable the external machine and the internal machine to enter or exit a low-power consumption standby mode; The power consumption control module comprises a bidirectional direct current conversion module and a low-power consumption power supply circuit, wherein one end of the bidirectional direct current conversion module is connected with the storage battery, the other end of the bidirectional direct current conversion module is respectively connected with a switching power supply of an external machine and a switching power supply of an internal machine through a power supply loop, the switching power supply of the external machine is used for supplying power to a load of the external machine, the external machine micro-control unit and the external machine communication module, the switching power supply of the internal machine is used for supplying power to a display panel of the internal machine, the remote control signal receiving module, the internal machine micro-control unit and the internal machine communication module, and the storage battery is directly connected with the display panel of the internal machine, the remote control signal receiving module and the internal machine micro-control unit through the low-power consumption power supply circuit; The power consumption control module further comprises a first normally open relay, a pre-charging circuit and a cut-off circuit, wherein the first normally open relay is connected on the positive direct current bus in series and is connected with the external micro-control unit, the first normally open relay is in a cut-off state under the condition of power failure, the first normally open relay is used for controlling on-off of the power supply circuit according to a control signal of the external micro-control unit, the pre-charging circuit is connected with the first normally open relay in parallel and is connected with the cut-off circuit, the cut-off circuit is connected with the storage battery micro-control unit, and the pre-charging circuit is used for switching the external micro-control unit into the positive direct current bus according to a control signal of the cut-off circuit when the first normally open relay is disconnected so as to wake up the external micro-control unit, and the cut-off circuit is used for controlling on-off of the pre-charging circuit according to a control signal of the storage battery micro-control unit.
2. The circuit according to claim 1, wherein the bidirectional dc conversion module is configured to convert an ac signal input by the mains supply into a dc signal when the external unit and the internal unit are not in the low power consumption standby mode, and supply power to the switching power supply of the external unit and the switching power supply of the internal unit through the power supply loop, or convert an ac signal output by the storage battery into a dc signal when the external unit and the internal unit are in the low power consumption standby mode, and directly supply power to the display panel of the internal unit, the remote control signal receiving module, and the internal unit through the low power consumption power supply line.
3. The circuit of claim 2, wherein the power supply loop is further connected to a photovoltaic input, and the bidirectional dc conversion module is further configured to convert an ac signal of the photovoltaic input to a dc signal when the external and internal devices are not in the low power standby mode, and to supply power to a switching power supply of the external device, a switching power supply of the internal device, or to charge the battery with the photovoltaic input through the power supply loop.
4. The circuit of claim 2, wherein the low power supply line comprises a first normally closed relay and a second normally closed relay, wherein: the first normally closed relay and the second normally closed relay are connected in series in the low-power consumption power supply circuit, the first normally closed relay is connected with the bidirectional direct current conversion module, and the second normally closed relay is connected with the internal machine micro-control unit; The first normally closed relay is used for controlling the on-off of the low-power consumption power supply circuit according to the control signal of the bidirectional direct current conversion module, the second normally closed relay is used for controlling the on-off of the low-power consumption power supply circuit according to the control signal of the internal machine micro-control unit, and the first normally closed relay and the second normally closed relay are in a closed state under the condition of power failure.
5. The circuit of claim 4, wherein the pre-charge circuit comprises a second normally open relay and a positive temperature coefficient thermistor, wherein: the second normally open relay is connected with the positive temperature coefficient thermistor in series, and the second normally open relay is used for controlling the on-off of the pre-charging circuit according to the control signal of the cut-off circuit.
6. The circuit of claim 5, wherein in the case that the remote control signal receiving module receives a shutdown signal, the internal machine micro-control unit is configured to control the internal machine communication module to transmit the shutdown signal to the external machine communication module and the battery communication module, the external machine micro-control unit is configured to control the first normally open relay to be disconnected according to the shutdown signal, and the battery micro-control unit is configured to control the disconnection circuit to disconnect the second normally open relay according to the shutdown signal, so as to disconnect the power supply loop to disconnect the switching power supply of the external machine and the switching power supply of the internal machine.
7. The circuit of claim 6, wherein when the power supply loop is opened, capacitors in the internal machine and the external machine are in a discharge state, and the first normally closed relay and the second normally closed relay are further used for closing when the capacitor voltage drops to a first target threshold value so as to conduct the low-power consumption power supply line, so that the bidirectional direct current conversion module converts an alternating current signal output by the storage battery into a direct current signal, and directly supplies power to a display board of the internal machine, the remote control signal receiving module and the internal machine micro control unit through the low-power consumption power supply line.
8. The circuit of claim 5, wherein in the case that the remote control signal receiving module receives a startup signal, the internal machine micro-control unit is configured to control the internal machine communication module to transmit the startup signal to the battery communication module, the battery communication module is configured to transmit the startup signal to the battery micro-control unit, and the battery micro-control unit is configured to control the cut-off circuit to close the second normally open relay according to the startup signal so as to conduct the pre-charging circuit, so that the external machine micro-control unit is connected to the positive dc bus, so as to wake up the external machine micro-control unit.
9. The circuit of claim 8, wherein the pre-charge circuit is further configured to charge capacitors in an external machine and an internal machine to reduce a voltage difference across a bus of the pre-charge circuit when the pre-charge circuit is on, the external machine micro-control unit is further configured to detect the voltage difference until the voltage difference is detected to be less than a second target threshold, to close the first normally open relay to turn on the power supply loop.
10. The circuit of claim 9, wherein the bi-directional dc conversion module is further configured to turn off the first normally-closed relay when the power supply loop is turned back on, and the internal machine micro-control unit is further configured to turn off the second normally-closed relay to disconnect the low power consumption power supply line and switch to power the external machine and the internal machine through the power supply loop.
11. The circuit of claim 5, wherein the internal machine micro control unit is further configured to start a timer when the remote control signal receiving module receives a shutdown signal, and to control the internal machine communication module to transmit the shutdown signal to the external machine communication module and the battery communication module when a new signal is not received within a preset period of time.

Description

Air conditioner control circuit Technical Field The application relates to the technical field of air conditioners, in particular to an air conditioner control circuit. Background The existing photovoltaic energy storage hybrid power supply air conditioner is characterized in that an external machine is connected with alternating current commercial power, photovoltaic direct current and storage battery direct current, and the external machine supplies direct current to an internal machine. In the standby mode, the internal machine needs to be controlled by the remote controller to restart and work, so the remote control receiver module of the internal machine needs to work in the standby mode. Therefore, the switching power supplies of the internal machine and the external machine need to work simultaneously. However, the standby power consumption is larger at this time, and the requirement of ultra-low power consumption standby cannot be met. At present, in the related art, the purpose of reducing standby power consumption is achieved by reducing the number of internal machine control modules and cutting off the power supply of an external machine during standby. However, the scheme is used for solving the problem that the air conditioner in the power supply mode is still incapable of meeting the requirement of ultra-low power consumption standby. Aiming at the problem that the external-driving internal-air conditioner cannot meet the requirement of ultra-low power consumption standby, no effective solution is proposed at present. Disclosure of Invention The application provides an air conditioner control circuit which is used for solving the technical problem that an air conditioner in an outside-in mode cannot meet the requirement of ultralow power consumption standby. According to one aspect of the embodiment of the application, the air conditioner control circuit comprises a remote control signal receiving module, an inner machine micro-control unit, an inner machine communication module, an outer machine micro-control unit, an outer machine communication module, a storage battery micro-control unit, a storage battery communication module and a storage battery, wherein the air conditioner control circuit further comprises a power consumption control module, the remote control signal receiving module is connected with the inner machine micro-control unit, the inner machine micro-control unit is connected with the inner machine communication module, the outer machine communication module and the storage battery communication module are in communication connection, the storage battery communication module is connected with the storage battery micro-control unit, the power consumption control module is respectively connected with the outer machine micro-control unit, the storage battery micro-control unit and the storage battery, the remote control signal receiving module is used for receiving external switching signals, the inner machine micro-control unit is used for controlling the inner machine communication module to transmit the switching signals to the outer machine communication module and the storage battery communication module, the outer machine communication module is used for enabling the outer machine micro-control unit to enter the storage battery micro-control unit to be in a standby mode according to the switching signals, and the power consumption control module is used for enabling the outer machine micro-control unit to enter the storage battery micro-control unit to be in a standby mode, and the storage battery micro-control unit is further used for enabling the outer machine communication module to enter the standby mode. The power consumption control module comprises a bidirectional direct current conversion module and a low-power consumption power supply circuit, wherein one end of the bidirectional direct current conversion module is connected with the storage battery, the other end of the bidirectional direct current conversion module is connected with a switch power supply of an external machine and a switch power supply of an internal machine through a power supply loop, the switch power supply of the external machine is used for supplying power to a load of the external machine, the external machine micro-control unit and the external machine communication module, the switch power supply of the internal machine is used for supplying power to a display panel of the internal machine, the remote control signal receiving module and the internal machine communication module, the storage battery is directly connected with the display panel of the internal machine, the remote control signal receiving module and the internal machine micro-control unit through the low-power consumption power supply circuit, the power supply loop is also connected with a mains supply input, and the bidirectional direct current conversion module is used for converting an alternating current signal input b