Air conditioner control circuit and air conditioner

Abstract

The application provides an air conditioner control circuit and an air conditioner. The standby mode is powered by the light-eliminating energy storage battery unit, so that the switch power supply of the outdoor unit does not need to be maintained, and the standby power consumption is reduced. Meanwhile, the light-eliminating energy storage battery unit is charged by the light-eliminating electric energy, so that the light-eliminating energy storage battery unit does not increase additional power consumption. The switch power supply in the indoor unit control unit is cancelled, and a voltage conversion unit is arranged instead, so that the standby power consumption of the original switch power supply of the indoor unit is reduced. The indoor unit control unit is maintained in the standby mode, and the standby power consumption is reduced.

Description

Technical Field

[0001] This invention relates to the field of air conditioning, and more particularly to an air conditioning control circuit and an air conditioner. Background Technology

[0002] For air conditioners with an outdoor unit connected to an indoor unit, the outdoor unit is connected to a power supply but 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 a command to wake up. Therefore, the relevant receiving devices of the indoor unit need to remain running. Since the indoor unit is powered by the outdoor unit, the switching power supplies of both the indoor and outdoor units need to remain running at the same time, resulting in a problem of high standby power consumption for the air conditioner. Summary of the Invention

[0003] The main objective of this invention is to propose an air conditioning control circuit and an air conditioner, which aims to solve the problem of high standby power consumption in existing air conditioners.

[0004] To achieve the above objectives, the present invention provides an air conditioning control circuit, which is connected to a photovoltaic module. The air conditioning control circuit includes an outdoor unit module and an indoor unit module. The outdoor unit module includes a waste solar energy storage battery unit, a photovoltaic unit, and an outdoor unit power supply unit. The input terminal of the photovoltaic unit is connected to the photovoltaic module, and the output terminal of the photovoltaic unit is connected to the power bus. The waste solar energy storage battery unit and the outdoor unit power supply unit are respectively connected to the power bus. The signal output terminal of the waste solar energy storage battery unit is connected to the control terminal of the outdoor unit power supply unit.

[0005] The indoor unit module includes an indoor unit control unit and a voltage conversion unit. The input terminal of the voltage conversion unit is connected to the voltage output terminal of the abandoned solar energy storage battery unit, the output terminal of the voltage conversion unit is connected to the power supply terminal of the indoor unit control unit, and the output terminal of the indoor unit control unit is connected to the wake-up terminal of the abandoned solar 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 solar energy storage battery unit according to the operating status of the air conditioner.

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

[0008] The abandoned photovoltaic energy storage battery unit is also used to charge 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 indoor unit control unit.

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

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

[0012] The power supply device is used to charge the energy storage battery using the waste solar energy from 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; the input terminal of the maximum power point tracking circuit is connected to the photovoltaic module, and the output terminal of the maximum power point tracking circuit is connected to the power bus.

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

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

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

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

[0019] A set of contacts of the first relay are respectively connected to the positive terminal 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 set of contacts of the second relay, and the second end of the coil of the first relay is connected to the voltage output terminal of the abandoned solar energy storage battery unit through the second set of contacts of the second relay; the control terminal of the second relay is connected to the signal output terminal of the abandoned solar energy storage battery unit.

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

[0022] The power supply terminal of the outdoor unit control unit is connected to the output terminal of the outdoor unit power supply unit, and the outdoor unit control unit is communicatively connected to the indoor unit control unit; the detection terminal of the outdoor unit control unit is connected to the photovoltaic unit, and the output terminal of the outdoor unit control unit is connected to the charging control terminal of the abandoned photovoltaic energy storage battery unit; wherein:

[0023] The outdoor unit control unit is used to detect the output power of the photovoltaic unit, and when the output power is detected to be less than the preset curtailment power, it sends a charging signal to the curtailment energy storage battery unit to charge the curtailment energy storage battery unit.

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

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

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

[0027] Optionally, the outdoor 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 are located on the power bus, and the photovoltaic energy storage battery and the abandoned photovoltaic energy storage battery unit are respectively connected to the 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 terminal of the functional unit is connected to the DC bus through a pair of contacts of the fourth relay, and the control terminal of the fourth relay is connected to the indoor unit control unit.

[0031] To achieve the above objectives, the present invention also provides an air conditioner, the air conditioner comprising a photovoltaic module, 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.

[0032] This invention proposes an air conditioning control circuit and an air conditioner. The air conditioning control circuit is connected to a photovoltaic module. The air conditioning control circuit includes an outdoor unit module and an indoor unit module. The outdoor unit module includes a solar power storage battery unit, a photovoltaic unit, and an outdoor unit power supply unit. The input terminal of the photovoltaic unit is connected to the photovoltaic module, and the output terminal of the photovoltaic unit is connected to the power bus. The solar power storage battery unit and the outdoor unit power supply unit are respectively connected to the power bus, and the signal output terminal of the solar power storage battery unit is connected to the control terminal of the outdoor unit power supply unit. The indoor unit module includes an indoor unit control unit and a voltage conversion unit. The input terminal of the voltage conversion unit is connected to the voltage output terminal of the solar power storage battery unit. The output terminal of the unit is connected to the power supply terminal of the indoor unit control unit, and the output terminal of the indoor unit control unit is connected to the wake-up terminal of the waste solar energy storage battery unit; wherein: the indoor unit control unit is used to send a standby signal or a wake-up signal to the waste solar energy storage battery unit according to the operating status of the air conditioner; the waste solar energy storage battery unit is used to control the outdoor unit power supply unit to stop operating after receiving the standby signal, and to control the outdoor unit power supply unit to operate after receiving the wake-up signal; the waste solar energy storage battery unit is also used to charge itself using the waste solar 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 indoor unit control unit. By setting up a solar power storage battery unit to power the indoor unit control unit in standby mode, the outdoor unit's switching power supply is no longer needed, thus reducing standby power consumption. Simultaneously, the solar power storage battery unit is charged using solar power, preventing it from consuming additional power. The switching power supply in the indoor unit control unit is eliminated and replaced with a voltage conversion unit, further reducing the standby power consumption of the original switching power supply. This achieves the effect of maintaining the indoor unit control unit's operation while reducing standby power consumption in standby mode. Attached Figure Description

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

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0035] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

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

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

[0038] Figure 3 This is a flowchart illustrating the air conditioner control circuit of the present invention in standby mode.

[0039] Figure 4 This is a flowchart illustrating the air conditioning control circuit of the present invention in its operating mode.

[0040] Explanation of icon numbers:

[0041]

[0042] Detailed Implementation

[0043] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0044] The following disclosure provides numerous different embodiments or examples for implementing various structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0045] It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. 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 with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0046] This invention provides an air conditioning control circuit, with reference to... Figure 1 , Figure 1 This is a structural block diagram of the first embodiment of the air conditioning control circuit of the present invention. The air conditioning control circuit is connected to the photovoltaic module 300. The air conditioning control circuit includes an outdoor unit module 100 and an indoor unit module 200. The outdoor unit module 100 includes a waste solar energy storage battery unit 110, a photovoltaic unit 120, and an outdoor unit power supply unit 130. The input terminal of the photovoltaic unit 120 is connected to the photovoltaic module 300, and the output terminal of the photovoltaic unit 120 is connected to the power bus. The waste solar energy storage battery unit 110 and the outdoor unit power supply unit 130 are respectively connected to the power bus. The signal output terminal of the waste solar energy storage battery unit 110 is connected to the control terminal of the outdoor unit power supply unit 130.

[0047] The indoor unit module 200 includes an indoor unit control unit 210 and a voltage conversion unit 220. The input terminal of the voltage conversion unit 220 is connected to the voltage output terminal of the abandoned solar energy storage battery unit 110, the output terminal of the voltage conversion unit 220 is connected to the power supply terminal of the indoor unit control unit 210, and the output terminal of the indoor unit control unit 210 is connected to the wake-up terminal 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 solar energy storage battery unit 110 according to the operating status of the air conditioner.

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

[0050] The abandoned solar energy storage battery unit 110 is also used to charge the abandoned solar 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 indoor 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 according to actual needs.

[0053] Curtailed solar power refers to unused electrical energy generated by photovoltaic power generation. The causes of curtailment include various factors, such as overflow from photovoltaic power generation or insufficient or excessive power output from photovoltaic power generation. In existing applications, the curtailed portion is directly discarded. In this embodiment, to improve the utilization rate of photovoltaic power generation, a curtailed solar power storage battery unit 110 is set up to charge the energy from the curtailed portion. This ensures that the curtailed solar power storage battery unit 110 does not generate additional power consumption and also reduces the curtailment rate.

[0054] When the air conditioner is in operating mode, the waste solar energy storage battery unit 110 is charged using the energy from the waste solar power, but does not supply power to other devices. At this time, the power sources for the devices inside the air conditioner are photovoltaic power, mains power, and photovoltaic energy storage battery 400, etc. When the air conditioner is in standby mode, the waste solar energy storage battery unit 110 supplies power to the voltage conversion unit 220. The voltage conversion unit 220 converts the voltage output by the waste solar energy storage battery unit 110 into the voltage required by the indoor unit control unit 210 and then supplies power to the indoor unit control unit 210. At the same time, other devices stop operating. That is, when the air conditioner is in standby mode, the devices that generate power consumption inside the air conditioner only include the waste solar energy storage battery unit 110, the voltage conversion unit 220, and the indoor unit control unit 210, and the absolute value of power consumption is reduced. The power source for these three is the waste solar energy storage battery unit 110, which is charged using the energy from the waste solar power. Therefore, the power consumption generated in standby mode comes from the waste solar power, further reducing standby power consumption.

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

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

[0057] Regarding 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 mains power; the outdoor unit power supply unit supplies power to the devices inside the outdoor unit through the power energy of the power bus, and at the same time, the waste solar energy storage battery unit 110 is charged through the waste solar portion, and the waste solar energy storage battery unit 110 also supplies power to the voltage conversion unit 220 of the indoor unit through the power energy on the power bus, so that the voltage conversion unit 220 supplies power to the devices inside 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 to the power bus can be disconnected; the outdoor unit power supply unit stops operating; the solar energy storage battery unit 110 supplies power to the indoor unit voltage conversion unit 220 through the previously stored electrical energy, so that the voltage conversion unit 220 supplies power to the indoor unit control unit 210.

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

[0060] This embodiment provides power to the indoor unit control unit 210 in standby mode by setting up a solar power storage battery unit 110, eliminating the need to maintain the operation of the outdoor unit's switching power supply 131 and reducing standby power consumption. Simultaneously, the solar power storage battery unit 110 is charged using solar power, preventing it from consuming additional power. The switching power supply in the indoor unit control unit 210 is removed and replaced by a voltage conversion unit 220, further reducing the standby power consumption of the original indoor unit switching power supply. This achieves the effect of maintaining the operation of the indoor unit control unit 210 in standby mode while reducing standby power consumption.

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

[0062] The power supply device 111 is used to control the outdoor unit power supply unit 130 to stop running after receiving the standby signal, and to control the outdoor unit 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 using the waste photovoltaic energy from 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 electrical energy of the input and output solar energy storage battery units 110; specifically, the power supply device 111 can realize functions such as voltage conversion, data processing, and battery control.

[0066] The power supply unit 111 establishes a communication connection with the indoor unit control unit 210. After the air conditioner switches from the operating mode to the standby mode, the indoor unit control unit 210 sends a standby signal to the power supply unit 111. The power supply unit 111 controls the outdoor unit power supply unit to stop operating and supplies power to the voltage conversion unit 220 through the voltage output of the energy storage battery 112. After the air conditioner switches from the standby mode to the operating mode, the indoor unit control unit 210 sends a wake-up signal to the power supply unit 111. The power supply unit 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, it supplies power to the energy storage battery 112 through the power wasted solar energy and also supplies power to the DC bus through the voltage of the power bus.

[0067] Understandably, the indoor unit's electrical energy is provided by the power supply device 111, which can be equipped with a DC-DC circuit. In operating mode, the power supply device 111 converts the power bus voltage into the target voltage of the DC bus through the DC-DC circuit and outputs it to the DC bus. At the same time, it converts the waste power to charge the energy storage battery 112 through the DC-DC circuit. The indoor unit's voltage conversion unit 220 supplies power to the indoor unit's components through the voltage on the DC bus. In standby mode, the power supply device 111 converts the energy of the energy storage battery 112 into the target voltage of the DC bus through the DC-DC circuit and outputs it to the DC bus.

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

[0069] Furthermore, the photovoltaic unit 120 includes a maximum power point tracking circuit; the input terminal of the maximum power point tracking circuit is connected to the photovoltaic module 300, and the output terminal 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 according to actual needs.

[0071] The electrical 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 outdoor unit power supply unit 130 includes a switching power supply 131 and a switching subunit 132; wherein:

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

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

[0075] The switching power supply 131 is the part of the outdoor unit that supplies power to the devices; the switching subunit 132 is used to control the operating state of the switching power supply 131. Specifically, the switching power supply 131 can convert the DC power on the power bus into power supply for different low-voltage, low-potential loads in the outdoor unit, such as +5V, +12V, and +15V.

[0076] Understandably, the positive terminal of the switching power supply 131 is connected to the power bus via the switching subunit 132. Therefore, when the switching subunit 132 is on, the positive terminal of the switching power supply 131 can be connected to the power bus through the switching subunit 132, the power supply circuit of the switching power supply 131 is on, and the switching power supply 131 can operate. When the switching subunit 132 is off, the connection between the positive terminal of the switching power supply 131 and the power bus is broken, the power supply circuit of the switching power supply 131 is broken, and the switching power supply 131 stops operating. Therefore, the solar power storage battery unit 110 can control the operating state of the switching power supply 131 by controlling the on / off state of the switching subunit 132.

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

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

[0079] A set of contacts of the first relay K1 are respectively connected to the positive terminal 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 set 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 terminal of the abandoned solar energy storage battery unit 110 through the second set of contacts K2-1 of the second relay K2; the control terminal of the second relay K2 is connected to the signal output terminal of the abandoned solar energy storage battery unit 110.

[0081] When the contacts of the first relay K1 are closed, the positive terminal of the switching power supply 131 can be connected to the power bus; when the contacts of the first relay K1 are open, the positive terminal 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 connected to the voltage output terminal of the abandoned solar energy storage battery unit 110 and ground, respectively. 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 open. When the contact of the second relay K2 is open, the two ends of the coil of the first relay K1 are connected to the voltage output terminal of the abandoned solar energy storage battery unit 110 and ground, respectively. The coil of the first relay K1 is not energized, the normally open contact of the first relay K1 is open, and the normally closed contact is closed.

[0083] The control terminal 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 according to actual needs. For example, a set of normally open contacts in the first relay K1 are connected to the positive terminal of the switching power supply 131 and the power bus, respectively. That is, in standby mode, the coil of the first relay K1 is de-energized, and in operating mode, the coil of the first relay K1 is energized. Therefore, in standby mode, the contacts of the second relay K2 need to be open, and in operating 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. In standby mode, the solar power storage battery unit 110 controls the coil of the second relay K2 to be de-energized, so that the normally open contacts of the second relay K2 are open. In operating mode, the solar power storage battery unit 110 controls the coil of the second relay K2 to be energized, so that the normally open contacts of the second relay K2 are closed. In this case, in standby mode, neither the coil of the first relay K1 nor the second relay K2 is energized. Therefore, the relays will not generate additional power consumption.

[0085] For example, a set of normally closed contacts in the first relay K1 are respectively connected to the positive terminal of the switching power supply 131 and the power bus. That is, in standby mode, the coil of the first relay K1 is energized, and in operating mode, the coil of the first relay K1 is de-energized. Therefore, in standby mode, the contacts of the second relay K2 need to be closed, and in operating mode, the contacts of the second relay K2 need to be open. Therefore, the contacts of the second relay K2 can be set as normally closed contacts. In standby mode, the waste solar energy storage battery unit 110 controls the coil of the second relay K2 to be de-energized, so that the normally closed contacts of the second relay K2 are closed. In operating mode, the waste solar energy storage battery unit 110 controls the coil of the second relay K2 to be energized, so that the normally closed contacts of the second relay K2 are open.

[0086] In practical applications, the switch subunit 132 can also be implemented by other switching devices, such as power switching transistors, electronic switches, etc.

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

[0088] The power supply terminal of the outdoor unit control unit 140 is connected to the output terminal of the outdoor unit power supply unit 130, and the outdoor unit control unit 140 is communicatively connected to the indoor unit control unit 210; the detection terminal of the outdoor unit control unit 140 is connected to the photovoltaic unit 120, and the output terminal of the outdoor unit control unit 140 is connected to the charging control terminal of the abandoned photovoltaic energy storage battery unit 110; wherein:

[0089] The outdoor unit control unit 140 is used to detect the output power of the photovoltaic unit 120, and when the output power is detected to be less than the preset curtailment power, it sends a charging signal to the curtailment energy storage battery unit 110 so that the curtailment energy storage battery unit 110 can be charged.

[0090] The outdoor unit control unit 140 is used to control the components inside the outdoor unit. The outdoor unit control unit 140 is powered by the outdoor unit power supply unit 130. The outdoor unit control unit 140 and the indoor unit control unit 210 are connected for communication, enabling information exchange during air conditioner operation. Specifically, the communication method between the outdoor unit control unit 140 and the indoor unit control unit 210 can be set according to actual needs, such as 485 communication. 485 communication is available in 2-wire and 4-wire versions. The 2-wire version only has differential signal lines A and B; the 4-wire version has differential signal lines A and B, and a positive and negative power supply line, totaling four lines.

[0091] As can be seen from the foregoing description, the curtailed solar energy storage battery unit 110 is charged by the electrical energy from the curtailed solar power. Therefore, it is necessary to detect the curtailed solar power generated by photovoltaic power generation in order to determine the charging status of the curtailed solar energy storage battery unit 110.

[0092] In this embodiment, the curtailment of solar power is determined by the output power of the photovoltaic power generation system. When the output power of the photovoltaic unit 120 is less than the preset curtailment power, this portion of the energy will not be used by the generator set or the photovoltaic energy storage battery 400. Therefore, this portion of the energy is considered curtailed solar power. In this case, the curtailment energy storage battery unit 110 is charged to utilize the curtailed energy. Conversely, when the output power of the photovoltaic unit 120 is greater than or equal to the preset curtailment power, this portion of the energy can be used by the generator set or the photovoltaic energy storage battery 400. Therefore, the curtailment energy storage battery unit 110 is not charged to avoid affecting the power consumption of other devices. The specific value of the preset curtailment power can be set based on actual needs, such as 100W.

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

[0094] It should be noted that in standby mode, since the electrical 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 solar energy storage battery unit 110, even if the output power of the photovoltaic unit 120 is greater than the preset solar power or less than the preset overflow power, it can still be charged by the electrical 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 status of the waste solar energy storage battery unit 110 can be implemented by other devices; for example, the waste solar energy storage battery unit 110 is connected to the photovoltaic unit 120, the waste solar energy storage battery unit 110 detects the output power of the photovoltaic unit 120, and determines whether to charge based on the detection result; or, for example, the indoor unit control unit 210 is connected to the photovoltaic unit 120, the indoor unit control unit 210 detects the output power of the photovoltaic unit 120, and sends relevant signals to the waste solar energy storage battery unit 110 based on the detection result to control whether the waste solar energy storage battery unit 110 is charged.

[0096] This embodiment detects the output power of the photovoltaic unit 120, enabling accurate identification of abandoned solar energy, and then allowing the abandoned solar energy storage battery unit 110 to be charged based on the abandoned solar energy.

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

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

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

[0100] The PFC (Power Factor Correction) circuit is used to rectify and correct the power factor of the mains input voltage to obtain a DC voltage, which is then output to the power bus. Specifically, the rectifier circuit can be set independently of the power factor correction circuit or they can be set together. The mains voltage is distilled to obtain DC, such as 310V, which is then passed through the power factor correction circuit to obtain a variable DC, such as 310V-380V, before being output to the power bus. The specific structure of the power factor correction circuit can be set according to actual needs.

[0101] Mains power serves as another power source for the air conditioner. When the air conditioner is in operation mode, mains power supplies the power bus to provide power to the outdoor unit power supply unit 130 and the solar energy storage battery unit 110.

[0102] The third relay K3 is used to control the connection 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 power to the power bus. When the contacts of the third relay K3 are open, the voltage output by the power factor correction circuit cannot provide power to the power bus. It can be understood that in standby mode, in order to avoid the power factor correction circuit from generating high energy consumption, the contacts of the third relay K3 are controlled to be open to stop consuming mains power. In operation 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 achieve mains power supply.

[0103] Furthermore, the outdoor unit module 100 also 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 are located on the power bus, and the photovoltaic energy storage battery 400 and the abandoned photovoltaic energy storage battery unit 110 are respectively connected to the 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 outdoor unit power supply unit 130 and the abandoned photovoltaic energy storage battery unit 110.

[0107] The third relay K3 is used to control the connection 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. When the contacts of the third relay K3 are open, 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 the photovoltaic energy storage battery 400 from generating high energy consumption, the contacts of the third relay K3 are controlled to be open to stop consuming the energy of the photovoltaic energy storage battery 400. In operation 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 enable the photovoltaic energy storage battery 400 to supply power.

[0108] It should be noted that, in the operating mode, the selection of different power sources such as photovoltaic unit 120, photovoltaic energy storage battery 400, and mains power can be set based on actual needs. For example, if the power output of photovoltaic unit 120 can meet the load requirements, power will be supplied only through photovoltaic unit 120. When the power output of photovoltaic unit 120 exceeds the load requirements, it can also charge photovoltaic energy storage battery 400. When the power output of photovoltaic unit 120 exceeds the total demand of the load and photovoltaic energy storage battery 400, the excess power can be transmitted to mains power and used to charge abandoned photovoltaic energy storage battery unit 110.

[0109] When the electrical 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 to supply power at the same time; when the photovoltaic unit 120 and the photovoltaic energy storage battery 400 can not supply power to meet the load requirements together, the mains power can be introduced to supply power.

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

[0111] Functional unit 230 refers to other electrical components in the indoor unit besides the indoor unit control unit 210 and the voltage conversion unit 220. 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, functional unit 230 can be powered through the DC bus. When the contacts of the fourth relay K4 are open, functional unit 230 cannot be powered through 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 voltage conversion unit 220. In this case, corresponding switching devices can be set for these functional units 230 to disconnect the connection between functional unit 230 and voltage conversion unit 220 in standby mode to reduce power consumption.

[0112] In standby mode, the indoor unit control unit 210 controls the fourth relay K4 contact to open, thereby shutting down the functional unit 230; in operating mode, the indoor unit control unit 210 controls the fourth relay K4 contact to close, thereby starting the functional unit 230.

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

[0114] See 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 shuts down the load inside the outdoor unit and switches to standby mode. In standby mode, the contacts of the first relay K1, the second relay K2, the third relay K3, and the fourth relay K4 are open, and the external power sources such as the mains power and the photovoltaic energy storage battery 400 no longer supply power to the power bus. The photovoltaic unit 120 continues to supply power to the power bus. The switching power supply 131 stops running, and other electrical components inside 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 the preset threshold, the third relay K3 is closed to maintain power supply through the mains 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 opened and power is supplied only through the energy storage battery 112.

[0116] See Figure 4In operation mode, the photovoltaic unit 120, the mains power, and the photovoltaic energy storage battery 400 jointly supply power to the power bus. The first relay K1 contacts close, and the switching 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 with the waste solar 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 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 external power supply is originally in use, the external power supply is maintained. When the energy storage battery 112 is originally in use, the external power supply is switched to be used.

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

[0118] In this invention, the terms "first," "second," "third," "fourth," and "fifth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0119] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0120] Although 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 should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, and substitutions to the above embodiments within the scope of the present invention, and such changes, modifications, and substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope 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 outdoor unit module and an indoor unit module; the outdoor unit module includes a waste solar energy storage battery unit, a photovoltaic unit, and an outdoor unit power supply unit, the input terminal of the photovoltaic unit is connected to the photovoltaic module, the output terminal of the photovoltaic unit is connected to the power bus, the waste solar energy storage battery unit and the outdoor unit power supply unit are respectively connected to the power bus, and the signal output terminal of the waste solar energy storage battery unit is connected to the control terminal of the outdoor unit power supply unit; The indoor unit module includes an indoor unit control unit and a voltage conversion unit. The input terminal of the voltage conversion unit is connected to the voltage output terminal of the abandoned solar energy storage battery unit, the output terminal of the voltage conversion unit is connected to the power supply terminal of the indoor unit control unit, and the output terminal of the indoor unit control unit is connected to the wake-up terminal of the abandoned solar energy storage battery unit; wherein: The indoor unit control unit is used to send a standby signal or a wake-up signal to the solar energy storage battery unit according to the operating status of the air conditioner. The abandoned solar energy storage battery unit is used to control the outdoor unit power supply unit to stop running after receiving the standby signal, and to control the outdoor unit power supply unit to run after receiving the wake-up signal; The abandoned photovoltaic energy storage battery unit is also used to charge 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 indoor unit control unit; The abandoned solar power storage battery unit includes a power supply device and an energy storage battery; the input terminal of the power supply device is connected to the power bus, the output terminal of the power supply device is connected to the DC bus in the indoor unit module, the signal output terminal of the power supply device is connected to the control terminal of the outdoor unit power supply unit, the wake-up terminal of the power supply device is connected to the output terminal of the indoor unit 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 outdoor unit power supply unit to stop running after receiving the standby signal, and to control the outdoor unit power supply unit to run after receiving the wake-up signal; The power supply device is used to charge the energy storage battery using the waste solar energy from 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.

2. The air conditioning control circuit as described in claim 1, characterized in that, The photovoltaic unit includes a maximum power point tracking circuit; the input terminal of the maximum power point tracking circuit is connected to the photovoltaic module, and the output terminal of the maximum power point tracking circuit is connected to the power bus.

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

4. The air conditioning control circuit as described in claim 3, characterized in that, The switching subunit includes a first relay and a second relay; wherein: A set of contacts of the first relay are respectively connected to the positive terminal 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 set of contacts of the second relay, and the second end of the coil of the first relay is connected to the voltage output terminal of the abandoned solar energy storage battery unit through the second set of contacts of the second relay; the control terminal of the second relay is connected to the signal output terminal of the abandoned solar energy storage battery unit.

5. The air conditioning control circuit as described in claim 1, characterized in that, The outdoor unit module also includes an outdoor unit control unit; wherein: The power supply terminal of the outdoor unit control unit is connected to the output terminal of the outdoor unit power supply unit, and the outdoor unit control unit is communicatively connected to the indoor unit control unit; the detection terminal of the outdoor unit control unit is connected to the photovoltaic unit, and the output terminal of the outdoor unit control unit is connected to the charging control terminal of the abandoned photovoltaic energy storage battery unit; wherein: The outdoor unit control unit is used to detect the output power of the photovoltaic unit, and when the output power is detected to be less than the preset curtailment power, it sends a charging signal to the curtailment energy storage battery unit to charge the curtailment energy storage battery unit.

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

7. The air conditioning control circuit as described in claim 1, characterized in that, The outdoor unit 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 are located on the power bus, and the photovoltaic energy storage battery and the abandoned photovoltaic energy storage battery unit are respectively connected to the two ends of the pair of contacts of the third relay.

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

9. An air conditioner, characterized in that, The air conditioner includes a photovoltaic module, an indoor unit, and an outdoor unit, wherein the indoor unit includes an indoor unit module as described in any one of claims 1 to 8, and the outdoor unit includes an outdoor unit module as described in any one of claims 1 to 8.

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