Air conditioner control circuit and air conditioner

Abstract

According to the air conditioner control circuit and the air conditioner, the light abandoning energy storage battery unit is arranged to supply power to the indoor unit control unit in the standby mode, so that the operation of a switching power supply of an outdoor unit does not need to be maintained, and the standby power consumption of the part is reduced; meanwhile, the light-abandoning energy storage battery unit is charged through light-abandoning electric energy, so that the light-abandoning energy storage battery unit does not increase extra power consumption; a switching power supply in the indoor unit control unit is canceled, and the voltage conversion unit is arranged, so that the standby power consumption of the original switching power supply of the indoor unit is reduced; the effect that the standby power consumption is reduced while the operation of the indoor unit control unit is maintained in the standby mode is achieved.

Description

Technical Field

[0001] The present invention relates to the field of air conditioners, and in particular to an air conditioner control circuit and an air conditioner. Background Art

[0002] For air conditioners that use an external-to-indoor power supply method, the external unit is connected to the power supply and does not provide DC power to the indoor unit. Under this power supply method, when the air conditioner is in standby mode, the indoor unit needs to receive instructions to wake up, so the related receiving devices of the indoor unit need to keep running. Since the indoor unit is powered by the external unit, the switching power supplies of the indoor and outdoor units need to keep running at the same time, which makes the air conditioner have the problem of high standby power consumption. Summary of the invention

[0003] The main purpose of the present invention is to provide an air-conditioning control circuit and an air-conditioning, aiming to solve the problem of high standby power consumption of the air-conditioning in the prior art.

[0004] To achieve the above-mentioned purpose, the present invention provides an air-conditioning control circuit, which is connected to a photovoltaic module; the air-conditioning control circuit includes an outdoor module and an indoor module; the outdoor module includes an abandoned photovoltaic energy storage battery unit, a photovoltaic unit and an outdoor power supply unit, the input end of the photovoltaic unit is connected to the photovoltaic module, the output end of the photovoltaic unit is connected to a power bus, the abandoned photovoltaic energy storage battery unit and the outdoor power supply unit are respectively connected to the power bus, and the signal output end of the abandoned photovoltaic energy storage battery unit is connected to the control end of the outdoor power supply unit;

[0005] The indoor unit module includes an indoor unit control unit and a voltage conversion unit, the input end of the voltage conversion unit is connected to the voltage output end of the abandoned light energy storage battery unit, the output end of the voltage conversion unit is connected to the power supply end of the indoor unit control unit, and the output end of the indoor unit control unit is connected to the wake-up end of the abandoned light energy storage battery unit; wherein:

[0006] The indoor unit control unit is used to send a standby signal or a wake-up signal to the abandoned solar energy storage battery unit according to the operating state of the air conditioner;

[0007] The abandoned solar energy storage battery unit is used to control the external power supply unit to stop running after receiving the standby signal, and control the external power supply unit to run after receiving the wake-up signal;

[0008] The abandoned photovoltaic energy storage battery unit is also used to charge with the abandoned photovoltaic energy of the photovoltaic unit, and to supply power to the voltage conversion unit through its own energy storage when the air conditioner is in standby mode;

[0009] The voltage conversion unit is used to supply power to the internal machine control unit.

[0010] Optionally, the abandoned light energy storage battery unit includes a power supply device and an energy storage battery; the input end of the power supply device is connected to the power bus, the output end of the power supply device is connected to the DC bus in the indoor module, the signal output end of the power supply device is connected to the control end of the outdoor power supply unit, the wake-up end of the power supply device is connected to the output end of the indoor control unit, and the power supply device is also connected to the energy storage battery; wherein:

[0011] The power supply device is used to control the external power supply unit to stop running after receiving the standby signal, and control the external power supply unit to run after receiving the wake-up signal;

[0012] The power supply device is used to charge the energy storage battery through the abandoned photovoltaic energy of the photovoltaic unit;

[0013] The power supply device is also used to supply power to the voltage conversion unit through the energy storage battery when the air conditioner is in standby mode.

[0014] Optionally, the photovoltaic unit includes a maximum power point tracking circuit; an input end of the maximum power point tracking circuit is connected to a photovoltaic component, and an output end of the maximum power point tracking circuit is connected to the power bus.

[0015] Optionally, the external power supply unit includes a switching power supply and a switching subunit; wherein:

[0016] The negative electrode of the switching power supply is connected to the ground wire of the power bus, and the positive electrode of the switching power supply is connected to the power bus through the switch subunit;

[0017] The control end of the switch subunit is connected to the signal output end of the abandoned solar energy storage battery unit.

[0018] Optionally, the switch subunit includes a first relay and a second relay; wherein:

[0019] A group of contacts of the first relay are respectively connected to the positive electrode of the switching power supply and the power bus;

[0020] The first end of the coil of the first relay is connected to the ground wire of the DC bus through the first group of contacts of the second relay, and the second end of the coil of the first relay is connected to the voltage output end of the abandoned solar energy storage battery unit through the second group of contacts of the second relay; the control end of the second relay is connected to the signal output end of the abandoned solar energy storage battery unit.

[0021] Optionally, the external unit module further includes an external unit control unit; wherein:

[0022] The power supply end of the external unit control unit is connected to the output end of the external unit power supply unit, and the external unit control unit is connected to the internal unit control unit for communication; the detection end of the external unit control unit is connected to the photovoltaic unit, and the output end of the external unit control unit is connected to the charging control end of the abandoned photovoltaic energy storage battery unit; wherein:

[0023] The external control unit is used to detect the output power of the photovoltaic unit, and when it is monitored that the output power is less than the preset abandoned photovoltaic power, send a charging signal to the abandoned photovoltaic energy storage battery unit to charge the abandoned photovoltaic energy storage battery unit.

[0024] Optionally, the external unit module further includes a power factor correction circuit and a third relay; wherein:

[0025] The input end of the power factor correction circuit is connected to the mains, and the output end of the power factor correction circuit is connected to the power bus;

[0026] A pair of contacts of the third relay is arranged on the power bus, and the power factor correction circuit and the abandoned solar energy storage battery unit are respectively connected to two ends of the pair of contacts of the third relay.

[0027] Optionally, the external unit module further includes a photovoltaic energy storage battery and a third relay; wherein:

[0028] The photovoltaic energy storage battery is connected to the power bus;

[0029] A pair of contacts of the third relay is arranged on the power bus, and the photovoltaic energy storage battery and the abandoned photovoltaic energy storage battery unit are respectively connected to two ends of the pair of contacts of the third relay.

[0030] Optionally, the indoor unit module further includes a functional unit and a fourth relay; the power supply end of the functional unit is connected to the DC bus through a pair of contacts of the fourth relay, and the control end of the fourth relay is connected to the indoor unit control unit.

[0031] To achieve the above object, the present invention also provides an air conditioner, which includes a photovoltaic component, an indoor unit and an outdoor unit, wherein the indoor unit includes the indoor unit module described above, and the outdoor unit includes the outdoor unit module described above.

[0032] The present invention proposes an air conditioning control circuit and an air conditioner, wherein the air conditioning control circuit is connected to a photovoltaic module; the air conditioning control circuit includes an outdoor module and an indoor module; the outdoor module includes a photovoltaic energy storage battery unit, a photovoltaic unit and an outdoor power supply unit, the input end of the photovoltaic unit is connected to the photovoltaic module, the output end of the photovoltaic unit is connected to a power bus, the photovoltaic energy storage battery unit and the outdoor power supply unit are respectively connected to the power bus, and the signal output end of the photovoltaic energy storage battery unit is connected to the control end of the outdoor power supply unit; the indoor module includes an indoor control unit and a voltage conversion unit, the input end of the voltage conversion unit is connected to the voltage output end of the photovoltaic energy storage battery unit, and the voltage conversion unit is connected to the control end of the outdoor power supply unit. The output end of the element is connected to the power end of the indoor unit control unit, and the output end of the indoor unit control unit is connected to the wake-up end of the abandoned light energy storage battery unit; wherein: the indoor unit control unit is used to send a standby signal or a wake-up signal to the abandoned light energy storage battery unit according to the operating state of the air conditioner; the abandoned light energy storage battery unit is used to control the outdoor power supply unit to stop running after receiving the standby signal, and control the outdoor power supply unit to run after receiving the wake-up signal; the abandoned light energy storage battery unit is also used to charge through the abandoned light energy of the photovoltaic unit, and when the air conditioner is on standby, it supplies power to the voltage conversion unit through its own energy storage; the voltage conversion unit is used to supply power to the indoor unit control unit. By setting up a solar-waste energy storage battery unit to power the indoor unit control unit in standby mode, there is no need to maintain the operation of the switching power supply of the outdoor unit, thereby reducing the standby power consumption of this part; at the same time, the solar-waste energy storage battery unit is charged by the solar-waste energy, so that the solar-waste energy storage battery unit does not increase additional power consumption; the switching power supply in the indoor unit control unit is cancelled, and a voltage conversion unit is set instead, thereby reducing the standby power consumption of the original switching power supply of the indoor unit; the effect of maintaining the operation of the indoor unit control unit in standby mode while reducing the standby power consumption is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0034] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0035] One or more embodiments are exemplarily described by pictures in the corresponding drawings, and these exemplified descriptions do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0036] Figure 1 It is a module structure diagram of the first embodiment of the air conditioning control circuit of the present invention;

[0037] Figure 2 is the overall structural diagram of the air conditioning control circuit of the present invention;

[0038] Figure 3 It is a schematic diagram of the flow of the air-conditioning control circuit of the present invention in the standby mode;

[0039] Figure 4 It is a flow chart of the air-conditioning control circuit of the present invention in the operation mode.

[0040] Description of Figure Numbers:

[0041]

[0042] DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0044] The disclosure below provides many different embodiments or examples to implement different structures of the present invention. In order to simplify the disclosure of the present invention, the parts and settings of specific examples are described below. Of course, they are only examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplification and clarity, and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0045] It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work should fall within the scope of protection of the present application.

[0046] The present invention provides an air conditioning control circuit, referring to Figure 1 , Figure 1 It is a structural module diagram of the first embodiment of the air conditioning control circuit of the present invention, wherein the air conditioning control circuit is connected to the photovoltaic module 300; the air conditioning control circuit includes an outdoor module 100 and an indoor module 200; the outdoor module 100 includes an abandoned photovoltaic energy storage battery unit 110, a photovoltaic unit 120 and an outdoor power supply unit 130, the input end of the photovoltaic unit 120 is connected to the photovoltaic module 300, the output end of the photovoltaic unit 120 is connected to the power bus, the abandoned photovoltaic energy storage battery unit 110 and the outdoor power supply unit 130 are respectively connected to the power bus, and the signal output end of the abandoned photovoltaic energy storage battery unit 110 is connected to the control end of the outdoor power supply unit 130;

[0047] The indoor unit module 200 includes an indoor unit control unit 210 and a voltage conversion unit 220, wherein the input end of the voltage conversion unit 220 is connected to the voltage output end of the abandoned solar energy storage battery unit 110, the output end of the voltage conversion unit 220 is connected to the power supply end of the indoor unit control unit 210, and the output end of the indoor unit control unit 210 is connected to the wake-up end of the abandoned solar energy storage battery unit 110; wherein:

[0048] The indoor unit control unit 210 is used to send a standby signal or a wake-up signal to the abandoned solar energy storage battery unit 110 according to the operating state of the air conditioner;

[0049] The abandoned solar energy storage battery unit 110 is used to control the external power supply unit 130 to stop running after receiving the standby signal, and control the external power supply unit 130 to run after receiving the wake-up signal;

[0050] The abandoned photovoltaic energy storage battery unit 110 is also used to charge the abandoned photovoltaic energy of the photovoltaic unit 120, and to supply power to the voltage conversion unit 220 through its own energy storage when the air conditioner is in standby mode;

[0051] The voltage conversion unit 220 is used to supply power to the internal unit control unit 210 .

[0052] The photovoltaic module 300 is used to convert solar energy into electrical energy and output it to the photovoltaic unit 120. The photovoltaic unit 120 is used to output voltage to the power bus according to the electrical energy output by the photovoltaic module 300. The specific structure of the photovoltaic module 300 and the photovoltaic unit 120 can be set based on actual needs.

[0053] Abandoned light is the electrical energy that is not used in photovoltaic power generation. There are many reasons for abandonment, such as overflow of photovoltaic power generation, or the power of the electrical energy generated by photovoltaic power generation is too low or too high to be used. In existing applications, the abandoned light is directly discarded. In this embodiment, in order to improve the utilization rate of photovoltaic power generation, an abandoned light energy storage battery unit 110 is provided to charge with the electrical energy of the abandoned light part, so that the setting of the abandoned light energy storage battery unit 110 does not generate additional power consumption, and at the same time can reduce the abandonment rate.

[0054] When the air conditioner is in operation mode, the abandoned photovoltaic energy storage battery unit 110 is charged by the electric energy of the abandoned photovoltaic part, but does not supply power to other devices; at this time, the power supply sources of the devices in the air conditioner are photovoltaic, mains, photovoltaic energy storage battery 400, etc.; when the air conditioner is in standby mode, the abandoned photovoltaic energy storage battery unit 110 supplies power to the voltage conversion unit 220, and the voltage conversion unit 220 converts the voltage output by the abandoned photovoltaic energy storage battery unit 110 into the voltage required by the indoor control unit 210 and then supplies power to the indoor control unit 210, while other devices stop running; that is, when the air conditioner is in standby mode, the devices that generate power consumption in the air conditioner only include the abandoned photovoltaic energy storage battery unit 110, the voltage conversion unit 220 and the indoor control unit 210, and the absolute value of power consumption is reduced; and the power supply source of these three is the abandoned photovoltaic energy storage battery unit 110, and the abandoned photovoltaic energy storage battery unit 110 is charged by the electric energy of the abandoned photovoltaic part, therefore, the power consumption generated in the standby mode comes from the abandoned photovoltaic part, further reducing the standby power consumption.

[0055] The external power supply unit is the part of the external unit that supplies power to the devices. Generally, the external power supply unit may include a switching power supply 131. It can be understood that when the air conditioner is in operation mode, the external power supply unit needs to supply power to the devices in the external unit. When the air conditioner is in standby mode, the external power supply unit will generate additional power consumption if it is running. Therefore, in this embodiment, when the air conditioner is in standby mode, the external power supply unit is set to stop running, thereby reducing the standby power consumption of the air conditioner.

[0056] The abandoned solar energy storage battery unit 110 establishes a communication connection with the indoor unit control unit 210; after the air conditioner switches from the running mode to the standby mode, the indoor unit control unit 210 sends a standby signal to the abandoned solar energy storage battery unit 110, and the abandoned solar energy storage battery unit 110 controls the outdoor power supply unit to stop running and starts to supply power to the voltage conversion unit 220; after the air conditioner switches from the standby mode to the running mode, the indoor unit control unit 210 sends a wake-up signal to the abandoned solar energy storage battery unit 110, and the abandoned solar energy storage battery unit 110 controls the outdoor power supply unit to resume running and stops supplying power to the voltage conversion unit 220. When performing the specific mode conversion, in the operation mode, when the internal machine control unit 210 receives a shutdown command sent by the user through a remote control, terminal or other control device, it changes from the operation mode to the standby mode. At this time, a waiting time can be set. After the waiting time, if no other command is received, it officially changes from the operation mode to the standby mode to avoid repeated power on and off or accidental shutdown in a short period of time; and in the standby mode, when the internal machine control unit 210 receives a power on command sent by the user through a remote control, terminal or other control device, it changes from the standby mode to the operation mode.

[0057] As for the overall implementation principle of this embodiment, when the air conditioner is in operation mode, the photovoltaic unit 120 outputs voltage to the power bus, and the power bus may also include other power inputs, such as city electricity; the external power supply unit supplies power to the devices in the external unit through the power energy of the power bus, and at the same time, the abandoned light energy storage battery unit 110 is charged through the abandoned light part, and the abandoned light energy storage battery unit 110 also supplies power to the voltage conversion unit 220 of the indoor unit through the power on the power bus, so that the voltage conversion unit 220 supplies power to the devices of the indoor unit;

[0058] When the air conditioner is in standby mode, the photovoltaic unit 120 outputs voltage to the power bus, and other power inputs of the power bus can be disconnected; the external power supply unit stops running; the abandoned photovoltaic energy storage battery unit 110 uses the previously stored electric energy to power the voltage conversion unit 220 of the indoor unit, so that the voltage conversion unit 220 powers the indoor unit control unit 210.

[0059] The power bus serves as a bus that provides voltage on the external unit to power the components in the external unit, such as a cooling fan, a compressor, a chassis electric heater, and a switching power supply 131.

[0060] In this embodiment, the abandoned light energy storage battery unit 110 is provided to power the indoor unit control unit 210 in the standby mode, so that there is no need to maintain the operation of the switching power supply 131 of the outdoor unit, thereby reducing the standby power consumption of this part; at the same time, the abandoned light energy storage battery unit 110 is charged by the abandoned light energy, so that the abandoned light energy storage battery unit 110 does not increase the additional power consumption; the switching power supply in the indoor unit control unit 210 is cancelled, and the voltage conversion unit 220 is provided instead, thereby reducing the standby power consumption of the original switching power supply of the indoor unit; the effect of reducing the standby power consumption while maintaining the operation of the indoor unit control unit 210 in the standby mode is achieved.

[0061] Further, see also Figure 2 , the abandoned solar energy storage battery unit 110 includes a power supply device 111 and an energy storage battery 112; the input end of the power supply device 111 is connected to the power bus, the output end of the power supply device 111 is connected to the DC bus in the indoor module 200, the signal output end of the power supply device 111 is connected to the control end of the outdoor power supply unit 130, the wake-up end of the power supply device 111 is connected to the output end of the indoor control unit 210, and the power supply device 111 is also connected to the energy storage battery 112; wherein:

[0062] The power supply device 111 is used to control the external power supply unit 130 to stop running after receiving the standby signal, and control the external power supply unit 130 to run after receiving the wake-up signal;

[0063] The power supply device 111 is used to charge the energy storage battery 112 through the abandoned photovoltaic energy of the photovoltaic unit 120;

[0064] The power supply device 111 is also used to supply power to the voltage conversion unit 220 through the energy storage battery 112 when the air conditioner is in standby mode.

[0065] The power supply device 111 is used to manage the electric energy input and output of the abandoned solar energy storage battery unit 110; specifically, the power supply device 111 can realize functions such as voltage conversion, data processing, and battery control.

[0066] The power supply device 111 establishes a communication connection with the indoor unit control unit 210; after the air conditioner switches from the running mode to the standby mode, the indoor unit control unit 210 sends a standby signal to the power supply device 111, and the power supply device 111 controls the outdoor unit power supply unit to stop running, and supplies power to the voltage conversion unit 220 through the voltage output by the energy storage battery 112; after the air conditioner switches from the standby mode to the running mode, the indoor unit control unit 210 sends a wake-up signal to the power supply device 111, and the power supply device 111 controls the outdoor unit power supply unit to resume operation, and controls the energy storage battery 112 to stop voltage output. At the same time, the energy storage battery 112 is powered by abandoned solar power, and the DC bus is powered by the voltage of the power bus.

[0067] It can be understood that the electric energy of the indoor unit is provided by the power supply device 111, and a DCDC circuit can be set in the power supply device 111; in the operating mode, the power supply device 111 converts the power bus voltage into the target voltage of the DC bus through the DCDC circuit and outputs it to the DC bus, and at the same time converts the abandoned light part of the electric energy through the DCDC circuit to charge the energy storage battery 112; the voltage conversion unit 220 of the indoor unit supplies power to the indoor device through the voltage on the DC bus; in the standby mode, the power supply device 111 converts the electric energy of the energy storage battery 112 into the target voltage of the DC bus through the DCDC circuit and outputs it to the DC bus.

[0068] By providing the power supply device 111 and the energy storage battery 112 , the abandoned solar energy storage battery unit 110 can be switched between different modes.

[0069] Furthermore, the photovoltaic unit 120 includes a maximum power point tracking circuit; an input end of the maximum power point tracking circuit is connected to the photovoltaic assembly 300, and an output end of the maximum power point tracking circuit is connected to the power bus.

[0070] The MPPT (Maximum Power Point Tracking) circuit is used to achieve the maximum power output of photovoltaics; the specific structure of the maximum power point tracking circuit can be set based on actual needs.

[0071] The electric energy output by the photovoltaic module 300 is processed by the maximum power point tracking circuit and then output to the power bus.

[0072] Furthermore, the external power supply unit 130 includes a switching power supply 131 and a switching subunit 132; wherein:

[0073] The negative electrode of the switching power supply 131 is connected to the ground wire of the power bus, and the positive electrode of the switching power supply 131 is connected to the power bus through the switch subunit 132;

[0074] The control end of the switch subunit 132 is connected to the signal output end of the abandoned solar energy storage battery unit 110 .

[0075] The switch power supply 131 is the part of the external machine that supplies power to the devices; the switch subunit 132 is used to control the operating state of the switch power supply 131. Specifically, the switch power supply 131 can convert the DC power on the power bus to different low-voltage weak potential external machines to supply weak current loads, such as +5V, +12V, and +15V.

[0076] It can be understood that the positive electrode of the switching power supply 131 is connected to the power bus through the switch subunit 132. Therefore, when the switch subunit 132 is turned on, the positive electrode of the switching power supply 131 can be connected to the power bus through the switch subunit 132, the power supply circuit of the switching power supply 131 is turned on, and the switching power supply 131 can operate; and when the switch subunit 132 is turned off, the connection between the positive electrode of the switching power supply 131 and the power bus is disconnected, the power supply circuit of the switching power supply 131 is disconnected, and the switching power supply 131 stops operating. Therefore, the abandoned light energy storage battery unit 110 can control the operating state of the switching power supply 131 by controlling the conduction state of the switch subunit 132.

[0077] In practical applications, other methods can also be set to control the operating state of the switching power supply 131. For example, if the switching power supply 131 itself can control the operating state through an external signal, the control end of the switching power supply 131 can be directly connected to the signal output end of the abandoned solar energy storage battery unit 110.

[0078] Furthermore, the switch subunit 132 includes a first relay K1 and a second relay K2; wherein:

[0079] A group of contacts of the first relay K1 are respectively connected to the positive electrode of the switching power supply 131 and the power bus;

[0080] The first end of the coil of the first relay K1 is connected to the ground wire of the DC bus through the first group of contacts K2-2 of the second relay K2, and the second end of the coil of the first relay K1 is connected to the voltage output end of the abandoned solar energy storage battery unit 110 through the second group of contacts K2-1 of the second relay K2; the control end of the second relay K2 is connected to the signal output end of the abandoned solar energy storage battery unit 110.

[0081] When the contact of the first relay K1 is closed, the positive electrode of the switching power supply 131 can be connected to the power bus; when the contact of the first relay K1 is disconnected, the positive electrode of the switching power supply 131 cannot be connected to the power bus.

[0082] When the contact of the second relay K2 is closed, the two ends of the coil of the first relay K1 are respectively connected to the voltage output end of the abandoned solar energy storage battery unit 110 and the ground, the coil of the first relay K1 is energized, the normally open contact of the first relay K1 is closed, and the normally closed contact is disconnected; when the contact of the second relay K2 is disconnected, the two ends of the coil of the first relay K1 are respectively connected to the voltage output end of the abandoned solar energy storage battery unit 110 and the ground, the coil of the first relay K1 is not energized, the normally open contact of the first relay K1 is disconnected, and the normally closed contact is closed.

[0083] The control end of the second relay K2 is controlled by the abandoned solar energy storage battery unit 110. Therefore, the abandoned solar energy storage battery unit 110 can control the operating state of the switching power supply 131 by controlling the switching state of the second relay K2.

[0084] The specific types of contacts in the first relay K1 and the second relay K2 can be set based on actual needs; for example, a group of normally open contacts in the first relay K1 are respectively connected to the positive electrode of the switching power supply 131 and the power bus, that is, it is required that in the standby mode, the coil of the first relay K1 is de-energized, and in the running mode, the coil of the first relay K1 is energized; therefore, in the standby mode, the contacts of the second relay K2 need to be disconnected, and in the running mode, the contacts of the second relay K2 need to be closed; therefore, the contacts of the second relay K2 can be set as normally open contacts, and in the standby mode, the abandoned light energy storage battery unit 110 controls the coil of the second relay K2 to de-energize, so that the normally open contacts of the second relay K2 are disconnected, and in the running mode, the abandoned light energy storage battery unit 110 controls the coil of the second relay K2 to energize, so that the normally open contacts of the second relay K2 are closed; in this case, in the standby mode, the coils of the first relay K1 and the second relay K2 are not energized, so the relay does not generate additional power consumption.

[0085] For another example, a group of normally closed contacts in the first relay K1 are respectively connected to the positive electrode of the switching power supply 131 and the power bus, that is, it is required that in the standby mode, the coil of the first relay K1 is energized, and in the operating mode, the coil of the first relay K1 is de-energized; therefore, in the standby mode, the contacts of the second relay K2 need to be closed, and in the operating mode, the contacts of the second relay K2 need to be disconnected; therefore, the contacts of the second relay K2 can be set as normally closed contacts, and in the standby mode, the abandoned solar energy storage battery unit 110 controls the coil of the second relay K2 to de-energize, so that the normally closed contacts of the second relay K2 are closed, and in the operating mode, the abandoned solar energy storage battery unit 110 controls the coil of the second relay K2 to energize, so that the normally closed contacts of the second relay K2 are disconnected.

[0086] In practical applications, the switch subunit 132 may also be implemented by other switch devices, such as a power switch tube, an electronic switch, etc.

[0087] Furthermore, the external unit module 100 further includes an external unit control unit 140; wherein:

[0088] The power supply end of the external unit control unit 140 is connected to the output end of the external unit power supply unit 130, and the external unit control unit 140 is connected to the internal unit control unit 210 for communication; the detection end of the external unit control unit 140 is connected to the photovoltaic unit 120, and the output end of the external unit control unit 140 is connected to the charging control end of the abandoned photovoltaic energy storage battery unit 110; wherein:

[0089] The external control unit 140 is used to detect the output power of the photovoltaic unit 120, and when it is detected that the output power is less than the preset abandoned photovoltaic power, send a charging signal to the abandoned photovoltaic energy storage battery unit 110 to charge the abandoned photovoltaic energy storage battery unit 110.

[0090] The external unit control unit 140 is used to control the components in the external unit; the external unit control unit 140 is powered by the external unit power supply unit 130; the external unit control unit 140 is connected to the internal unit control unit 210 for communication to realize information exchange during the operation of the air conditioner; specifically, the specific communication method between the external unit control unit 140 and the internal unit control unit 210 can be set based on actual needs, such as 485 communication; 485 communication is divided into 2-wire and 4-wire. The 2-wire system only has differential signal lines A and B; the 4-wire system is divided into differential signal lines A and B, and the positive and negative power lines, a total of four lines.

[0091] As can be seen from the above description, the abandoned solar energy storage battery unit 110 is charged by the electric energy of the abandoned solar power part. Therefore, it is necessary to detect the abandoned solar power part generated by photovoltaic power generation to determine the charging state of the abandoned solar energy storage battery unit 110.

[0092] In this embodiment, the abandoned light is determined by the power of the photovoltaic power generation output electric energy; when the output power of the photovoltaic unit 120 is less than the preset abandoned light power, this part of the electric energy will not be used by the unit or the photovoltaic energy storage battery 400, therefore, part of its electric energy is abandoned light energy, at this time, the abandoned light energy storage battery unit 110 is controlled to charge to realize the application of abandoned light; and when the output power of the photovoltaic unit 120 is greater than or equal to the preset abandoned light power, this part of the electric energy can be used by the unit or the photovoltaic energy storage battery 400, therefore, the abandoned light energy storage battery unit 110 is controlled not to charge to avoid affecting the power consumption of other devices. The specific value of the preset abandoned light power can be set based on actual needs, such as 100W.

[0093] In other embodiments, a preset overflow power may also be set; it is understandable that when the output power of the photovoltaic unit 120 is too large, that is, the output power is greater than the preset overflow power, there is an overflow of electric energy. Therefore, in this case, the abandoned light energy storage battery unit 110 can also be charged by the overflowed electric energy.

[0094] It should be noted that in standby mode, since the electric energy output by the photovoltaic unit 120 will not be used by other components of the air conditioner, in order to maintain the long-term operation of the abandoned light energy storage battery unit 110, even if the output power of the photovoltaic unit 120 is greater than the preset abandoned light power, or less than the preset overflow power, it can also be charged by the electric energy output by the photovoltaic unit 120.

[0095] In other embodiments, the detection of the output power of the photovoltaic unit 120 and the control of the charging state of the abandoned photovoltaic energy storage battery unit 110 can be implemented by other devices; for example, the abandoned photovoltaic energy storage battery unit 110 is connected to the photovoltaic unit 120, and the abandoned photovoltaic energy storage battery unit 110 detects the output power of the photovoltaic unit 120, and determines whether to charge based on the detection result; for another example, the indoor control unit 210 is set to be connected to the photovoltaic unit 120, and the indoor control unit 210 detects the output power of the photovoltaic unit 120, and sends a relevant signal to the abandoned photovoltaic energy storage battery unit 110 based on the detection result to control whether the abandoned photovoltaic energy storage battery unit 110 is charged.

[0096] This embodiment detects the output power of the photovoltaic unit 120, so that the abandoned photovoltaic energy can be accurately identified, and then the abandoned photovoltaic energy storage battery unit 110 is charged based on the abandoned photovoltaic energy.

[0097] Furthermore, the external unit module 100 further includes a power factor correction circuit and a third relay K3; wherein:

[0098] The input end of the power factor correction circuit is connected to the mains, and the output end of the power factor correction circuit is connected to the power bus;

[0099] A pair of contacts of the third relay K3 is arranged on the power bus, and the power factor correction circuit and the abandoned solar energy storage battery unit 110 are respectively connected to two ends of the pair of contacts of the third relay K3.

[0100] PFC (Power Factor Correction) is used to rectify the voltage input from the AC power supply, obtain a DC voltage after power factor correction, and output the DC voltage to the power bus; specifically, the rectification circuit can be set independently of the power factor correction circuit, or it can be set uniformly, and the AC power voltage is distilled to obtain DC power, such as 310V, and then variable DC power, such as 310V-380V, is obtained through the power factor correction circuit and then output to the power bus; the specific structure of the power factor correction circuit can be set based on actual needs.

[0101] The mains electricity serves as another power source for the air conditioner; when the air conditioner is in operation mode, the mains electricity supplies power to the power bus to provide power to the external power supply unit 130 and the abandoned solar energy storage battery unit 110.

[0102] The third relay K3 is used to control the connection relationship between the power factor correction circuit and the power bus; when the contacts of the third relay K3 are closed, the voltage output by the power factor correction circuit can provide electrical energy to the power bus, and when the contacts of the third relay K3 are disconnected, the voltage output by the power factor correction circuit cannot provide electrical energy to the power bus; it can be understood that, in standby mode, in order to avoid high energy consumption of the power factor correction circuit, the contacts of the third relay K3 are controlled to be disconnected to stop consuming AC power; and in operating mode, in order to ensure the normal operation of the air conditioner, the contacts of the third relay K3 are controlled to be closed to realize AC power supply.

[0103] Furthermore, the external unit module 100 further includes a photovoltaic energy storage battery 400 and a third relay K3; wherein:

[0104] The photovoltaic energy storage battery 400 is connected to the power bus;

[0105] A pair of contacts of the third relay K3 is arranged on the power bus, and the photovoltaic energy storage battery 400 and the abandoned photovoltaic energy storage battery unit 110 are respectively connected to two ends of the pair of contacts of the third relay K3.

[0106] The photovoltaic energy storage battery 400 serves as another power source for the air conditioner; when the air conditioner is in operation mode, the photovoltaic energy storage battery 400 supplies power to the power bus to provide power to the external power supply unit 130 and the abandoned photovoltaic energy storage battery unit 110.

[0107] The third relay K3 is used to control the connection relationship between the photovoltaic energy storage battery 400 and the power bus; when the contacts of the third relay K3 are closed, the voltage output by the photovoltaic energy storage battery 400 can provide power to the power bus, and when the contacts of the third relay K3 are disconnected, the voltage output by the photovoltaic energy storage battery 400 cannot provide power to the power bus; it can be understood that in standby mode, in order to avoid high energy consumption of the photovoltaic energy storage battery 400, the contacts of the third relay K3 are controlled to be disconnected to stop consuming the electricity of the photovoltaic energy storage battery 400; and in operating mode, in order to ensure the normal operation of the air conditioner, the contacts of the third relay K3 are controlled to be closed to realize power supply of the photovoltaic energy storage battery 400.

[0108] It should be noted that, in the operating mode, the selection between different power sources such as the photovoltaic unit 120, the photovoltaic energy storage battery 400, and the mains can be set based on actual needs; when the electric energy output by the photovoltaic unit 120 can meet the load requirements, power supply is only achieved through the photovoltaic unit 120. When the electric energy output by the photovoltaic unit 120 exceeds the load requirements, the photovoltaic energy storage battery 400 can also be charged additionally. When the electric energy output by the photovoltaic unit 120 exceeds the total demand of the load and the photovoltaic energy storage battery 400, the excess electric energy can also be transmitted to the mains, and the abandoned light energy storage battery unit 110 can be charged.

[0109] When the electric energy output by the photovoltaic unit 120 cannot meet the load requirements, the photovoltaic unit 120 and the photovoltaic energy storage battery 400 can be used for power supply at the same time; when the photovoltaic unit 120 and the photovoltaic energy storage battery 400 cannot meet the load requirements, the mains power is further introduced for power supply.

[0110] Furthermore, the indoor unit module 200 also includes a functional unit 230 and a fourth relay K4; the power supply end of the functional unit 230 is connected to the DC bus through a pair of contacts of the fourth relay K4, and the control end of the fourth relay K4 is connected to the indoor unit control unit 210.

[0111] The functional unit 230 is an electrical device other than the indoor unit control unit 210 and the voltage conversion unit 220 in the indoor unit; the functional unit 230 is connected to the DC bus through the contacts of the fourth relay K4. When the contacts of the fourth relay K4 are closed, the functional unit 230 can be powered by the DC bus. When the contacts of the fourth relay K4 are disconnected, the functional unit 230 cannot be powered by the DC bus. It should be noted that different functional units 230 require different power supply voltages. Therefore, some functional units 230 can be powered by the voltage conversion unit 220 after voltage conversion. In this case, corresponding switching devices can be set for such functional units 230 to disconnect the connection between the functional unit 230 and the voltage conversion unit 220 in standby mode to reduce power consumption.

[0112] In the standby mode, the indoor unit control unit 210 controls the contact of the fourth relay K4 to be opened to turn off the functional unit 230 ; in the operating mode, the indoor unit control unit 210 controls the contact of the fourth relay K4 to be closed to start the functional unit 230 .

[0113] The overall application principle of this application is explained below:

[0114] See also Figure 3 After receiving the shutdown command, the indoor unit control unit 210 sends a standby command to the power supply device 111 and the outdoor unit control unit 140. The outdoor unit control unit 140 turns off the load in the outdoor unit and switches to the standby mode. In the standby mode, the contacts of the first relay K1, the second relay K2, the third relay K3, and the fourth relay K4 are disconnected, and the AC power, the photovoltaic energy storage battery 400 and other peripheral power sources no longer supply power to the power bus, and the photovoltaic unit 120 continues to supply power to the power bus. The switching power supply 131 stops running, and other electrical devices in the outdoor unit stop running. The power supply device 111 supplies power to the DC bus of the indoor unit through the energy storage battery 112. The functional unit 230 in the indoor unit stops consuming power, and the voltage conversion unit 220 supplies power to the indoor unit control unit 210 through the DC bus.

[0115] In standby mode, the amount of electricity stored in the energy storage battery 112 can be further judged. When the amount of electricity is lower than a preset threshold, the third relay K3 is closed to maintain power supply through the AC power and the photovoltaic energy storage battery 400. When the amount of electricity is higher than or equal to the preset threshold, the third relay K3 is disconnected and power is only supplied by the energy storage battery 112.

[0116] See also Figure 4In the operation mode, the photovoltaic unit 120, the mains power, and the photovoltaic energy storage battery 400 jointly supply power to the power bus, the contacts of the first relay K1 are closed, and the switch power supply 131 is energized to supply power to the electrical components of the outdoor unit; the power supply device 111 charges the energy storage battery 112 through the abandoned light energy in the power bus, and also transmits power to the DC bus in the indoor unit through the voltage in the power bus; the voltage conversion module and the functional unit 230 obtain power from the DC bus, and the voltage conversion unit 220 supplies power to the indoor unit control unit 210; when the power is originally supplied by the peripheral power supply, the peripheral power supply is maintained, and when the power is originally supplied by the energy storage battery 112, the power is switched to the peripheral power supply.

[0117] The present invention further provides an air conditioner, comprising a photovoltaic component, an indoor unit and an outdoor unit, wherein the indoor unit comprises the indoor unit module as described above, and the outdoor unit comprises the outdoor unit module as described above.

[0118] In the present invention, the terms "first", "second", "third", "fourth" and "fifth" are used for descriptive purposes only and are not to be understood as indicating or implying relative importance. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0119] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0120] Although the embodiments of the present invention have been shown and described above, the scope of protection of the present invention is not limited thereto. It is understood that the above embodiments are exemplary and cannot be understood as limiting the present invention. A person of ordinary skill in the art can change, modify and replace the above embodiments within the scope of the present invention, and these changes, modifications and replacements should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention shall be subject to the scope of protection of the claims.

Claims

1. An air conditioning control circuit, characterized in that: The air conditioning control circuit is connected to the photovoltaic module; the air conditioning control circuit includes an external module and an internal module; the external module includes a photovoltaic energy storage battery unit, a photovoltaic unit and an external power supply unit, the input end of the photovoltaic unit is connected to the photovoltaic module, the output end of the photovoltaic unit is connected to the power bus, the photovoltaic energy storage battery unit and the external power supply unit are respectively connected to the power bus, and the signal output end of the photovoltaic energy storage battery unit is connected to the control end of the external power supply unit; The indoor unit module includes an indoor unit control unit and a voltage conversion unit, the input end of the voltage conversion unit is connected to the voltage output end of the abandoned light energy storage battery unit, the output end of the voltage conversion unit is connected to the power supply end of the indoor unit control unit, and the output end of the indoor unit control unit is connected to the wake-up end of the abandoned light energy storage battery unit; wherein: The indoor unit control unit is used to send a standby signal or a wake-up signal to the abandoned solar energy storage battery unit according to the operating state of the air conditioner; The abandoned solar energy storage battery unit is used to control the external power supply unit to stop running after receiving the standby signal, and control the external power supply unit to run after receiving the wake-up signal; The abandoned photovoltaic energy storage battery unit is also used to charge with the abandoned photovoltaic energy of the photovoltaic unit, and to supply power to the voltage conversion unit through its own energy storage when the air conditioner is in standby mode; The voltage conversion unit is used to supply power to the internal machine control unit.

2. The air conditioning control circuit according to claim 1, characterized in that: The abandoned solar energy storage battery unit includes a power supply device and an energy storage battery; the input end of the power supply device is connected to the power bus, the output end of the power supply device is connected to the DC bus in the indoor module, the signal output end of the power supply device is connected to the control end of the outdoor power supply unit, the wake-up end of the power supply device is connected to the output end of the indoor control unit, and the power supply device is also connected to the energy storage battery; wherein: The power supply device is used to control the external power supply unit to stop running after receiving the standby signal, and control the external power supply unit to run after receiving the wake-up signal; The power supply device is used to charge the energy storage battery through the abandoned photovoltaic energy of the photovoltaic unit; The power supply device is also used to supply power to the voltage conversion unit through the energy storage battery when the air conditioner is in standby mode.

3. The air conditioning control circuit according to claim 1, characterized in that: The photovoltaic unit comprises a maximum power point tracking circuit; the input end of the maximum power point tracking circuit is connected to the photovoltaic component, and the output end of the maximum power point tracking circuit is connected to the power bus.

4. The air conditioning control circuit according to claim 1, characterized in that: The external power supply unit includes a switching power supply and a switching subunit; wherein: The negative electrode of the switching power supply is connected to the ground wire of the power bus, and the positive electrode of the switching power supply is connected to the power bus through the switch subunit; The control end of the switch subunit is connected to the signal output end of the abandoned solar energy storage battery unit.

5. The air conditioning control circuit according to claim 4, characterized in that: The switch subunit includes a first relay and a second relay; wherein: A group of contacts of the first relay are respectively connected to the positive electrode of the switching power supply and the power bus; The first end of the coil of the first relay is connected to the ground wire of the DC bus through the first group of contacts of the second relay, and the second end of the coil of the first relay is connected to the voltage output end of the abandoned solar energy storage battery unit through the second group of contacts of the second relay; the control end of the second relay is connected to the signal output end of the abandoned solar energy storage battery unit.

6. The air conditioning control circuit according to claim 1, characterized in that: The external unit module also includes an external unit control unit; wherein: The power supply end of the external unit control unit is connected to the output end of the external unit power supply unit, and the external unit control unit is connected to the internal unit control unit for communication; the detection end of the external unit control unit is connected to the photovoltaic unit, and the output end of the external unit control unit is connected to the charging control end of the abandoned photovoltaic energy storage battery unit; wherein: The external control unit is used to detect the output power of the photovoltaic unit, and when it is monitored that the output power is less than the preset abandoned photovoltaic power, send a charging signal to the abandoned photovoltaic energy storage battery unit to charge the abandoned photovoltaic energy storage battery unit.

7. The air conditioning control circuit according to claim 1, characterized in that: The external unit module also includes a power factor correction circuit and a third relay; wherein: The input end of the power factor correction circuit is connected to the mains, and the output end of the power factor correction circuit is connected to the power bus; A pair of contacts of the third relay is arranged on the power bus, and the power factor correction circuit and the abandoned solar energy storage battery unit are respectively connected to two ends of the pair of contacts of the third relay.

8. The air conditioning control circuit according to claim 1, characterized in that: The external machine module also includes a photovoltaic energy storage battery and a third relay; wherein: The photovoltaic energy storage battery is connected to the power bus; A pair of contacts of the third relay is arranged on the power bus, and the photovoltaic energy storage battery and the abandoned photovoltaic energy storage battery unit are respectively connected to two ends of the pair of contacts of the third relay.

9. The air conditioning control circuit according to claim 1, characterized in that: The indoor unit module also includes a functional unit and a fourth relay; the power supply end of the functional unit is connected to the DC bus through a pair of contacts of the fourth relay, and the control end of the fourth relay is connected to the indoor unit control unit.

10. An air conditioner, characterized in that: The air conditioner comprises a photovoltaic module, an indoor unit and an outdoor unit, wherein the indoor unit comprises the indoor unit module according to any one of claims 1 to 9, and the outdoor unit comprises the outdoor unit module according to any one of claims 1 to 9.

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