Split type air conditioner and load compensation device thereof

Abstract

The utility model discloses a split type air conditioner and a load compensation device thereof. The load compensation device comprises a comparison module, a first load compensation circuit and a second load compensation circuit. The comparison module is connected with a low-voltage power supply of the outdoor unit and is used for detecting the voltage of the low-voltage power supply of the outdoor unit, generating a detection voltage value and generating a first access signal after determining that the detection voltage value is smaller than a first reference voltage value; after determining that the detection voltage value is greater than a second reference voltage value, generating a second access signal; the first load compensation circuit is used for connecting a first load to a power supply of the indoor unit based on the first access signal; and the second load compensation circuit is used for connecting the second load to the low-voltage power supply of the outdoor unit based on the second access signal. If the load compensation device detects that the voltage value of the low-voltage power supply of the outdoor unit is too low, the load is connected to the power supply of the indoor unit; if the detected voltage value is too high, the load is connected to the low-voltage power supply of the outdoor unit, and it is guaranteed that the voltage value of the low-voltage power supply of the outdoor unit is stable.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of air conditioners, and in particular to a split type air conditioner and a load compensation device thereof. BACKGROUND

[0002] The split type air conditioner includes an indoor unit and an outdoor unit. In order to ensure the insulation performance of the indoor unit and avoid large current from being passed into the indoor unit, in the related art, the split type air conditioner usually adopts a split power supply scheme of outdoor unit strong electricity + indoor unit weak electricity. Specifically, an external power supply supplies power to the outdoor unit, and the power is supplied to the indoor unit load after being transformed by a secondary winding of a switching power supply of the outdoor unit, and the power is supplied to the controller, electronic expansion valve and relay and other low-voltage loads of the outdoor unit after being transformed by an auxiliary winding of the switching power supply.

[0003] It should be noted that although the split power supply scheme can improve the safety of the indoor unit, the low-voltage power supply of the outdoor unit is generated by the auxiliary winding, and the voltage fluctuation range of the low-voltage power supply of the outdoor unit is greatly affected by the load size of the indoor unit and the outdoor unit. For example, when the air conditioner operates in a heating mode, the compressor, the outdoor fan and the electronic expansion valve and other outdoor unit loads start to operate, and the indoor fan does not operate. At this time, the indoor unit load is lightly loaded, the outdoor unit load is heavily loaded, and the voltage output by the auxiliary winding is low. When the air conditioner operates in a blowing mode, the indoor fan operates, and the outdoor unit load does not operate. At this time, the indoor unit load is heavily loaded, the outdoor unit load is lightly loaded, and the voltage output by the auxiliary winding is high. Obviously, the large fluctuation of the low-voltage power supply of the outdoor unit will affect the normal operation of the low-voltage load of the outdoor unit. UTILITY MODEL CONTENT

[0004] Therefore, the embodiments of the present application provide a split type air conditioner and a load compensation device thereof, which aim to stabilize the voltage value of the low-voltage power supply of the outdoor unit of the air conditioner.

[0005] The technical scheme of the embodiments of the present application is as follows:

[0006] In a first aspect, the embodiments of the present application provide a load compensation device of an air conditioner, which is applied to a split type air conditioner. The split type air conditioner includes an indoor unit and an outdoor unit. An input power supply of the outdoor unit supplies power to the indoor unit load after being transformed once. The power supply after being transformed once supplies power to the outdoor unit low-voltage load after being transformed twice. The load compensation device includes:

[0007] a comparison module connected to the low-voltage power supply of the outdoor unit, configured to detect a voltage of the low-voltage power supply of the outdoor unit and generate a detection voltage value; the comparison module is further configured to compare the detection voltage value with a first reference voltage value, and generate a first access signal when the detection voltage value is less than the first reference voltage value; and compare the detection voltage value with a second reference voltage value, and generate a second access signal when the detection voltage value is greater than the second reference voltage value;

[0008] a first load compensation circuit connected to a first output end of the comparison module and a power supply of the indoor unit, configured to access a first load of the first load compensation circuit to the power supply of the indoor unit based on the first access signal;

[0009] a second load compensation circuit connected to a second output end of the comparison module and the low-voltage power supply of the outdoor unit, configured to access a second load of the second load compensation circuit to the low-voltage power supply of the outdoor unit based on the second access signal;

[0010] wherein the second reference voltage value is greater than the first reference voltage value.

[0011] In some embodiments, the load compensation device is arranged in the outdoor unit.

[0012] In some embodiments, the load compensation device further comprises:

[0013] a first reference voltage circuit connected to the comparison module, wherein the first reference voltage value is an output voltage value of the first reference voltage circuit;

[0014] a second reference voltage circuit connected to the comparison module, wherein the second reference voltage value is an output voltage value of the second reference voltage circuit.

[0015] In some embodiments, the first load compensation circuit further comprises:

[0016] a first switch module, a driving end of the first switch module being connected to the first output end of the comparison module, the first switch module being configured to control a power access state of the first load;

[0017] the second load compensation circuit further comprises:

[0018] a second switch module, a driving end of the second switch module being connected to the second output end of the comparison module, the second switch module being configured to control a power access state of the second load.

[0019] In some embodiments, the comparison module comprises:

[0020] a first comparator, a first input terminal of the first comparator being connected to the first reference voltage circuit, a second input terminal of the first comparator being connected to the detection voltage, the first comparator being configured to compare the detection voltage value with the first reference voltage value;

[0021] a second comparator, a first input terminal of the second comparator being connected to the detection voltage, a second input terminal of the second comparator being connected to the second reference voltage circuit, the second comparator being configured to compare the detection voltage value with the second reference voltage value;

[0022] wherein the detection voltage value is a voltage value of the detection voltage, and the detection voltage is obtained based on a low-voltage power supply of the outdoor unit.

[0023] In some embodiments, an output terminal of the first comparator is connected to a driving terminal of the first switch module, and the first comparator is further configured to output a first disconnect signal if it is determined that the detection voltage value is greater than or equal to the first reference voltage value.

[0024] An output terminal of the second comparator is connected to a driving terminal of the second switch module, and the second comparator is further configured to output a second disconnect signal if it is determined that the detection voltage value is less than or equal to the second reference voltage value.

[0025] In some embodiments, the first input terminal of the first comparator is a positive input terminal, and the second input terminal of the first comparator is a negative input terminal; the first input terminal of the second comparator is a positive input terminal, and the second input terminal of the second comparator is a negative input terminal; at least one capacitor is further arranged between the driving terminal and a ground terminal of the first switch module; and at least one capacitor is further arranged between the driving terminal and the ground terminal of the second switch module.

[0026] In some embodiments, the load compensation device further comprises a third reference voltage circuit and a fourth reference voltage circuit, and the third reference voltage circuit and the fourth reference voltage circuit are both connected to the comparison module.

[0027] The comparison module is further configured to compare the detection voltage value with a third reference voltage value, and to generate a first disconnect signal when a first load is connected to the power supply of the indoor unit and the detection voltage value rises to the third reference voltage value.

[0028] The comparison module is further configured to compare the detection voltage value with a fourth reference voltage value, and to generate a second disconnect signal when a second load is connected to the low-voltage power supply of the outdoor unit and the detection voltage value drops to the fourth reference voltage value.

[0029] The third reference voltage value is an output voltage value of the third reference voltage circuit, and the fourth reference voltage value is an output voltage value of the fourth reference voltage circuit; the third reference voltage value is greater than the first reference voltage value, and the fourth reference voltage value is less than the second reference voltage value.

[0030] In some embodiments, the comparison module further comprises: a third comparator, a first input end of the third comparator being connected to the third reference voltage circuit, and a second input end of the third comparator being connected to the detection voltage, for comparing the detection voltage value and the third reference voltage value;

[0031] a fourth comparator, a first input end of the fourth comparator being connected to the detection voltage, and a second input end of the fourth comparator being connected to the fourth reference voltage circuit, for comparing the detection voltage value and the fourth reference voltage value;

[0032] a first logic circuit module, an input end of the first logic circuit module being connected to the first comparator and the third comparator, and an output end of the first logic circuit module being connected to a driving end of the first switch module;

[0033] a second logic circuit module, an input end of the second logic circuit module being connected to the second comparator and the fourth comparator, and an output end of the second logic circuit module being connected to a driving end of the second switch module.

[0034] In some embodiments, the first logic circuit module comprises:

[0035] a first AND gate circuit, input ends of the first AND gate circuit being connected to an output end of the first comparator and an output end of the third comparator;

[0036] a first NOT gate circuit, an input end of the first NOT gate circuit being connected to the output end of the first comparator;

[0037] a second AND gate circuit, input ends of the second AND gate circuit being connected to an output end of the first NOT gate circuit and the output end of the third comparator;

[0038] a first OR gate circuit, input ends of the first OR gate circuit being connected to an output end of the first AND gate circuit and an output end of the second AND gate circuit, and an output end of the first OR gate circuit being connected to the driving end of the first switch module and an input end of the second AND gate circuit.

[0039] In some embodiments, the second logic circuit module comprises:

[0040] a third AND gate circuit, an output end of the third AND gate circuit being connected to an output end of the second comparator and an output end of the fourth comparator;

[0041] a second NOT gate circuit, an input end of the second NOT gate circuit being connected to an output end of the second comparator;

[0042] a fourth AND gate circuit, input ends of the fourth AND gate circuit being connected to an output end of the second NOT gate circuit and an output end of the fourth comparator;

[0043] a second OR gate circuit, input ends of the second OR gate circuit being connected to an output end of the third AND gate circuit and an output end of the fourth AND gate circuit, an output end of the second OR gate circuit being connected to a driving end of the second switch module and an input end of the fourth AND gate circuit.

[0044] In some embodiments, the first access signal and the second access signal are level signals.

[0045] When the driving end of the first switch module receives the first access signal, the first switch module controls the first load to access the power supply of the indoor unit; when the driving end of the first switch module receives a level signal opposite to the first access signal, the first switch module controls the first load to be disconnected from the power supply of the indoor unit.

[0046] When the driving end of the second switch module receives the second access signal, the second switch module controls the second load to access the power supply of the indoor unit; when the driving end of the second switch module receives a level signal opposite to the second access signal, the second switch module controls the second load to be disconnected from the low-voltage power supply of the outdoor unit.

[0047] In some embodiments, the first disconnection signal is a level signal opposite to the first access signal; the second disconnection signal is a level signal opposite to the second access signal.

[0048] In a second aspect, the embodiments of the present application provide a split-type air conditioner, which comprises an indoor unit and an outdoor unit, an input power supply of the outdoor unit is used to supply power to the indoor unit load after primary voltage transformation, the power supply after the primary voltage transformation is used to supply power to the low-voltage load of the outdoor unit after secondary voltage transformation, and the split-type air conditioner further comprises the load compensation device according to the first aspect.

[0049] In some embodiments, the flyback switching power supply comprises a primary winding, a secondary winding and an auxiliary winding, the primary winding is connected to the power supply of the outdoor unit, the power supply of the outdoor unit is used to supply power to the indoor unit load after voltage transformation through the secondary winding, and is used to supply power to the low-voltage load of the outdoor unit after voltage transformation through the auxiliary winding.

[0050] The load compensation device of the air conditioner provided by the embodiment of the present application is applied to a split type air conditioner, the split type air conditioner comprises an indoor unit and an outdoor unit, an input power supply of the outdoor unit is used to supply power to a load of the indoor unit after primary voltage transformation, and the power supply after the primary voltage transformation is used to supply power to a low-voltage load of the outdoor unit after secondary voltage transformation. The load compensation device comprises a comparison module, a first load compensation circuit and a second load compensation circuit. The comparison module is connected to the low-voltage power supply of the outdoor unit, is used to detect the voltage of the low-voltage power supply of the outdoor unit, and generate a detection voltage value; the comparison module is also used to compare the detection voltage value with a first reference voltage value, generate a first access signal after it is determined that the detection voltage value is less than the first reference voltage value, and compare the detection voltage value with a second reference voltage value, and generate a second access signal after it is determined that the detection voltage value is greater than the second reference voltage value; the first load compensation circuit is connected to the first output end of the comparison module and the power supply of the indoor unit, and is used to connect a first load of the first load compensation circuit to the power supply of the indoor unit based on the first access signal; the second load compensation circuit is connected to the second output end of the comparison module and the low-voltage power supply of the outdoor unit, and is used to connect a second load of the second load compensation circuit to the low-voltage power supply of the outdoor unit based on the second access signal; and the second reference voltage value is greater than the first reference voltage value. In this way, the load compensation device of the embodiment of the present application detects whether the voltage value of the low-voltage power supply of the outdoor unit is within a set voltage range, connects the load to the power supply of the indoor unit if it is detected that the voltage value is too low, and connects the load to the low-voltage power supply of the outdoor unit if it is detected that the voltage value is too high, so that the load balance between the indoor unit and the outdoor unit during the operation of the air conditioner is achieved by compensating the load, and the voltage value of the low-voltage power supply of the outdoor unit is stabilized. BRIEF DESCRIPTION OF DRAWINGS

[0051] Figure 1 The structure schematic diagram of the split type air conditioner of the embodiment of the present application is shown;

[0052] Figure 2 The schematic diagram of the power supply circuit of the electric control board of the outdoor unit of the embodiment of the present application is shown;

[0053] Figure 3 The structure schematic diagram of the load compensation device of the air conditioner of one embodiment of the present application is shown;

[0054] Figure 4 The structure schematic diagram of the load compensation device of the air conditioner of another embodiment of the present application is shown;

[0055] Figure 5 The structure schematic diagram of the load compensation device of the air conditioner of still another embodiment of the present application is shown;

[0056] Figure 6 The structure schematic diagram of the load compensation device of the air conditioner of still another embodiment of the present application is shown;

[0057] Figure 7Figure 1 is a schematic diagram of a load compensation device according to an embodiment of the present application;

[0058] Figure 8 Figure 2 is a schematic diagram of a first logic circuit module according to an embodiment of the present application;

[0059] Figure 9 Figure 3 is a schematic diagram of a second logic circuit module according to an embodiment of the present application;

[0060] Figure 10 Figure 4 is a schematic diagram of a load compensation device according to an application example of the present application;

[0061] Figure 11 Figure 5 is a schematic diagram of a comparison module according to an application example of the present application;

[0062] Figure 12 Figure 6 is a switch logic relationship diagram of a first logic circuit module according to an application example of the present application;

[0063] Figure 13 Figure 7 is a schematic diagram of a comparison module according to another application example of the present application;

[0064] Figure 14 Figure 8 is a switch logic relationship diagram of a second logic circuit module according to an application example of the present application.

[0065] Explanation of Reference Signs:

[0066] 100, switch power supply; 101, auxiliary winding; 301, comparison module;

[0067] 3011, first comparator; 3012, second comparator; 3013, third comparator;

[0068] 3014, fourth comparator; 3015, first logic circuit module; 3016, second logic circuit module;

[0069] 302, first load compensation circuit; 3021, first load; 3022, first switch module;

[0070] 303, second load compensation circuit; 3031, second load; 3032, second switch module;

[0071] 304, first reference voltage circuit; 305, second reference voltage circuit;

[0072] 306, third reference voltage circuit; 307, fourth reference voltage circuit;

[0073] 801, first AND gate circuit; 802, first NOT gate circuit; 803, second AND gate circuit;

[0074] 804, first OR gate circuit; 901, third AND gate circuit; 902, second NOT gate circuit;

[0075] 903, fourth AND gate circuit; 904, second OR gate circuit. DETAILED DESCRIPTION

[0076] The application will be further described below in conjunction with the accompanying drawings and embodiments.

[0077] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description herein is for describing particular embodiments only and is not intended to be limiting of the application.

[0078] In the description of the present application, it should be explained that, unless otherwise explicitly defined and limited, the terms "mounting", "connection", "connecting" and the like should be understood in a broad sense, for example, "connecting" can be fixed connection, or detachable connection, or integrally connected; can be mechanical connection, or electrical connection; can be directly connected, or indirectly connected through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0079] The embodiment of the present application provides a load compensation device of an air conditioner, which is applied to a split type air conditioner and used for realizing voltage value stability of a low-voltage power supply of an outdoor unit of the air conditioner.

[0080] Here, the split type air conditioner includes an indoor unit and an outdoor unit, and adopts a split power supply scheme of outdoor unit strong power + indoor unit weak power, as shown in Figure 1 Specifically, an external power supply accesses an outdoor unit electric control board, and supplies power to an outdoor unit high-voltage load as an input power supply of the outdoor unit; the outdoor unit electric control board converts and outputs the input power supply of the outdoor unit to an indoor unit electric control board and supplies power to an outdoor unit low-voltage load

[0081] It should be noted that the outdoor unit load includes a high-voltage load, a low-voltage load and a control load, the outdoor unit high-voltage load can include but is not limited to: a compressor, an outdoor fan and a four-way valve; the outdoor unit low-voltage load can include but is not limited to: a power factor correction circuit, a controller, an intelligent power IPM module, a relay and an electronic expansion valve; the outdoor unit control load can include but is not limited to: a power supply chip and an operational amplifier chip; the indoor unit load can include but is not limited to: an indoor unit electric control board, an indoor fan, a negative ion UVC sterilization device, a display board, a relay, a multifunctional board, a voice module and a wind guide assembly stepping motor.

[0082] Exemplarily, the outdoor unit electric control board includes a switching power supply, and the switching power supply includes a primary winding, a secondary winding and an auxiliary winding. The outdoor unit electric control board converts the input power supply of the outdoor unit and outputs the converted input power supply to the indoor unit electric control board. Specifically, the input power supply of the outdoor unit is converted by the secondary winding and is supplied to the indoor unit load. The outdoor unit electric control board converts the input power supply of the outdoor unit and supplies the converted input power supply to the outdoor unit low-voltage load. Specifically, the input power supply of the outdoor unit is converted by the auxiliary winding and is supplied to the outdoor unit low-voltage load. The input power supply of the outdoor unit is converted by the secondary winding once, and is converted by the auxiliary winding twice and is supplied to the outdoor unit low-voltage load.

[0083] Here, the power supply circuit of the outdoor unit electric control board is as shown in FIG. 1. The rectified external power supply is connected to the primary winding of the switching power supply 100, and an electric signal is generated in the secondary winding of the switching power supply 100 to supply power to the indoor unit load. The auxiliary winding 101 is coupled to the secondary winding of the switching power supply 100. The electric signal generated in the secondary winding of the switching power supply 100 is converted by the first power supply chip twice through the auxiliary winding 101, and the converted electric signal is converted by the first power supply chip to generate the low-voltage power supply of the outdoor unit to supply power to the outdoor unit low-voltage load. Figure 2

[0084] Here, the electric signal output by the auxiliary winding 101 is also connected to the second power supply chip, and the electric signal converted by the second power supply chip is supplied to the outdoor unit control load.

[0085] Here, the secondary winding side of the switching power supply 100 is connected to a switching tube. The power supply generated in the secondary winding is chopped by the switching tube to generate the power supply of the indoor unit. The duty cycle of the switching tube can be controlled to stabilize the voltage of the power supply of the indoor unit.

[0086] Here, the type of the switching power supply 100 includes but is not limited to a flyback switching power supply, a forward switching power supply and a push-pull switching power supply. Figure 2 As shown in FIG. 1, the switching power supply 100 is a flyback switching power supply.

[0087] It should be noted that the split power supply scheme of the split air conditioner described above effectively avoids large current from being connected to the indoor unit, and improves the safety of the indoor unit. However, the low-voltage power supply of the outdoor unit is generated by the auxiliary winding, and the voltage fluctuation range of the low-voltage power supply of the outdoor unit is directly affected by the load size of the indoor unit and the outdoor unit. For example, when the split air conditioner is operated in the heating mode, the compressor, the outdoor fan and the electronic expansion valve are all started to operate, and the indoor fan is not started to operate. At this time, the indoor unit load is light, the outdoor unit load is heavy, and the voltage output by the auxiliary winding is low. When the air conditioner is operated in the air supply mode, the indoor fan is operated, and the outdoor unit load is not operated. At this time, the indoor unit load is heavy, the outdoor unit load is light, and the voltage output by the auxiliary winding is high. The large voltage fluctuation of the voltage output by the auxiliary winding will affect the normal operation of the outdoor unit low-voltage load. ​

[0088] Based on this, the load compensation circuit of the embodiments of the present application is used to compensate the indoor unit load or the outdoor unit low-voltage load when the voltage of the low-voltage power supply of the outdoor unit exceeds the set voltage range, so as to reduce the influence of voltage fluctuation caused by the imbalance of the indoor unit load and the outdoor unit load.

[0089] Exemplarily, as shown in the figure, Figure 3 The load compensation device includes a comparison module 301, a first load compensation circuit 302, and a second load compensation circuit 303. The comparison module 301 is connected to the low-voltage power supply of the outdoor unit, used to detect the voltage of the low-voltage power supply of the outdoor unit, and generate a detection voltage value; the comparison module 301 is also used to compare the detection voltage value with a first reference voltage value, and generate a first access signal after determining that the detection voltage value is less than the first reference voltage value; and compare the detection voltage value with a second reference voltage value, and generate a second access signal after determining that the detection voltage value is greater than the second reference voltage value. The first load compensation circuit 302 is connected to the first output end of the comparison module 301 and the power supply of the indoor unit, used to connect the first load 3021 of the first load compensation circuit 302 to the power supply of the indoor unit based on the first access signal. The second load compensation circuit 303 is connected to the second output end of the comparison module 301 and the low-voltage power supply of the outdoor unit, used to connect the second load 3031 of the second load compensation circuit 303 to the low-voltage power supply of the outdoor unit based on the second access signal.

[0090] The second reference voltage value is greater than the first reference voltage value.

[0091] Here, the comparison module 301 converts the low-voltage power supply of the outdoor unit into a detection voltage, and the voltage value of the detection voltage is the detection voltage value. Specifically, in some embodiments, the low-voltage power supply of the outdoor unit is divided by the voltage dividing circuit of the comparison module 301 to obtain the detection voltage, which is used to generate the first access signal or the second access signal.

[0092] It should be noted that the first reference voltage value corresponds to the lower limit value of the set voltage range, and the second reference voltage value corresponds to the upper limit value of the set voltage range. If the detection voltage value is greater than or equal to the first reference voltage value and less than or equal to the second reference voltage value, it is determined that the voltage value of the low-voltage power supply of the outdoor unit falls within the set voltage range, and the outdoor unit low-voltage load can operate normally. If the detection voltage value is less than the first reference voltage value or greater than the second reference voltage value, it is determined that the voltage value of the low-voltage power supply of the outdoor unit exceeds the set voltage range, at this time, the voltage of the low-voltage power supply of the outdoor unit is too high or too low, which will affect the normal operation of the outdoor unit low-voltage load.

[0093] It can be understood that, since the indoor unit load is light and the outdoor unit load is heavy, which can cause the voltage of the low-voltage power supply of the outdoor unit to be too low, the comparison module 301 determines that the voltage of the current low-voltage power supply of the outdoor unit is too low based on the reference voltage value being less than the first reference voltage value, and then sends a first access signal to the first load compensation circuit 302, which connects the first load 3021 to the power supply of the indoor unit to balance the indoor unit load and the outdoor unit load, thereby increasing the voltage of the low-voltage power supply of the outdoor unit.

[0094] It can be understood that, since the indoor unit load is heavy and the outdoor unit load is light, which can cause the voltage of the low-voltage power supply of the outdoor unit to be too high, the comparison module 301 determines that the voltage of the current low-voltage power supply of the outdoor unit is too high based on the reference voltage value being greater than the second reference voltage value, and then sends a second access signal to the second load compensation circuit 303, which connects the second load 3031 to the low-voltage power supply of the outdoor unit to balance the indoor unit load and the outdoor unit load, thereby reducing the voltage of the low-voltage power supply of the outdoor unit.

[0095] It can be understood that the load compensation device of the embodiments of the present application detects whether the voltage value of the low-voltage power supply of the outdoor unit is within the set voltage range, and if the voltage value is too low, the load is connected to the power supply of the indoor unit; if the voltage value is too high, the load is connected to the low-voltage power supply of the outdoor unit, thereby balancing the indoor unit load and the outdoor unit load during operation of the air conditioner through load compensation, and ensuring the stability of the voltage value of the low-voltage power supply of the outdoor unit.

[0096] Here, the first load 3021 and the second load 3031 can be pure resistive elements, and after the first load 3021 is connected to the power supply of the indoor unit or the second load 3031 is connected to the low-voltage power supply of the outdoor unit, the load of the corresponding side of the air conditioner can be increased, and at the same time, the normal operation of other loads of the air conditioner will not be affected.

[0097] In one application example, the first load 3021 and the second load 3031 are resistors.

[0098] Exemplarily, as shown in Figure 4 The load compensation device further comprises a first reference voltage circuit 304 and a second reference voltage circuit 305. The first reference voltage circuit 304 is connected to the comparison module 301, and the first reference voltage value is the output voltage value of the first reference voltage circuit 304. The second reference voltage circuit 305 is connected to the comparison module 301, and the second reference voltage value is the output voltage value of the second reference voltage circuit 305.

[0099] Here, the control power supply of the outdoor unit is connected to the first reference voltage circuit 304 and the second reference voltage circuit 305, and is connected to the comparison module 301 after being converted by the first reference voltage circuit 304 and the second reference voltage circuit 305.

[0100] Exemplarily, the first load compensation circuit 302 further comprises a first switch module 3022. The driving end of the first switch module 3022 is connected to the first output end of the comparison module 301, and the first switch module 3022 is used for controlling the power access state of the first load 3021.

[0101] Exemplarily, the second load compensation circuit 303 further comprises a second switch module 3032. The driving end of the second switch module 3032 is connected to the second output end of the comparison module 301, and the second switch module 3032 is used for controlling the power access state of the second load 3031.

[0102] It should be noted that the first output end of the comparison module 301 is used for outputting a first access signal, the first access signal is used for controlling the first switch module 3022 to be turned on, so that the first load 3021 accesses the power supply of the indoor unit; and the second output end of the comparison module 301 is used for outputting a second access signal, the second access signal is used for controlling the second switch module 3032 to be turned on, so that the second load 3031 accesses the low-voltage power supply of the outdoor unit.

[0103] Here, the form of the first switch module 3022 and the second switch module 3032 is not specifically limited in the embodiment of the application, the first switch module 3022 or the second switch module 3032 can be a switch element or a combination of multiple switch elements, and the switch element can be a MOS tube, a triode, an optical coupling and the like.

[0104] Exemplarily, the comparison module 301 comprises a first comparator 3011 and a second comparator 3012. The first input end of the first comparator 3011 is connected to the first reference voltage circuit 304, the second input end of the first comparator 3011 accesses the detection voltage, and the first comparator 3011 is used for comparing the detection voltage value and the first reference voltage value. The first input end of the second comparator 3012 accesses the detection voltage, the second input end of the second comparator 3012 is connected to the second reference voltage circuit 305, and the second comparator 3012 is used for comparing the detection voltage value and the second reference voltage value.

[0105] It should be noted that, in the embodiment of the application, Figure 4 the first input end of the first comparator 3011 is specifically a positive input end, the second input end of the first comparator 3011 is specifically a negative input end, the first input end of the second comparator 3012 is specifically a positive input end, and the second input end of the second comparator 3012 is specifically a negative input end; the connection mode of the first comparator 3011 with the first reference voltage circuit 304 and the power supply of the outdoor unit and the connection mode of the second comparator 3012 with the second reference voltage circuit 305 and the power supply of the outdoor unit are not limited to the above. Figure 4The first input end of the first comparator 3011 is specifically a negative input end, the second input end of the first comparator 3011 is specifically a positive input end, and / or the first input end of the second comparator 3012 is specifically a negative input end, and the second input end of the second comparator 3012 is specifically a positive input end, and the same technical effects can also be achieved. It can be understood that, as Figure 4 In the connection mode shown, if the detection voltage value is less than the first reference voltage value, the first comparator 3011 outputs a high-level signal, and if the detection voltage value is greater than or equal to the first reference voltage value, the first comparator 3011 outputs a low-level signal; if the detection voltage value is greater than the second reference voltage value, the second comparator 3012 outputs a high-level signal, and if the detection voltage value is less than or equal to the second reference voltage value, the second comparator 3012 outputs a low-level signal. The comparison module 301 generates a first access signal based on the high-level signal output by the first comparator 3011, and generates a second access signal based on the high-level signal output by the second comparator 3012.

[0106] Exemplarily, the first access signal and the second access signal are level signals; the first switch module 3022 is configured such that when the driving end of the first switch module 3022 receives the first access signal, the first switch module 3022 controls the first load 3021 to access the power supply of the indoor unit; when the driving end of the first switch module 3022 receives a level signal opposite to the level of the first access signal, the first switch module 3022 controls the first load 3021 to be disconnected from the power supply of the indoor unit; when the driving end of the second switch module 3032 receives the second access signal, the second switch module 3032 controls the second load 3031 to access the power supply of the indoor unit; when the driving end of the second switch module 3032 receives a level signal opposite to the level of the second access signal, the second switch module 3032 controls the second load 3031 to be disconnected from the low-voltage power supply of the outdoor unit.

[0107] It can be understood that the first access signal is a high-level signal or a low-level signal, and the level type of the first access signal is related to the connection mode of the first comparator 3011, the first reference voltage circuit 304, and the power supply of the outdoor unit; the second access signal is a high-level signal or a low-level signal, and the level type of the second access signal is related to the connection mode of the second comparator 3012, the second reference voltage circuit 305, and the power supply of the outdoor unit.

[0108] It is easily understood that if the first access signal is a high level signal, the first switch module 3022 controls the first load 3021 to be disconnected from the power supply of the indoor unit based on the low level signal received by the driving end; if the second access signal is a high level signal, the second switch module 3032 controls the second load 3031 to be disconnected from the low voltage power supply of the outdoor unit based on the low level signal received by the driving end; if the first access signal is a low level signal, the first switch module 3022 controls the first load 3021 to be disconnected from the power supply of the indoor unit based on the high level signal received by the driving end; if the second access signal is a low level signal, the second switch module 3032 controls the second load 3031 to be disconnected from the low voltage power supply of the outdoor unit based on the high level signal received by the driving end.

[0109] Exemplarily, the comparison module 301 is further configured to generate a first disconnection signal indicating that the first load 3021 is disconnected from the power supply of the indoor unit, and a second disconnection signal indicating that the second load 3031 is disconnected from the low voltage power supply of the outdoor unit.

[0110] It is easily understood that the first disconnection signal is a level signal opposite to the level of the first access signal; the second disconnection signal is a level signal opposite to the level of the second access signal. In some embodiments, as shown in the embodiment shown in Figure 5 the output end of the first comparator 3011 is connected to the driving end of the first switch module 3022, and the first comparator 3011 is further configured to output the first disconnection signal if it is determined that the detection voltage value is greater than or equal to the first reference voltage value; the output end of the second comparator 3012 is connected to the driving end of the second switch module 3032, and the second comparator 3012 is further configured to output the second disconnection signal if it is determined that the detection voltage value is less than or equal to the second reference voltage value.

[0111] It is easily understood that in some embodiments, the output end signal of the first comparator 3011 is directly sent to the first load compensation circuit 302 as the first access signal or the first disconnection signal, for controlling the power access state of the first load 3021; and the output end signal of the second comparator 3012 is directly sent to the second load compensation circuit 303 as the second access signal or the second disconnection signal, for controlling the power access state of the second load 3031.

[0112] It is easily understood that in the embodiment shown in Figure 5 the level type of the first access signal and the second access signal is not specifically limited.

[0113] Based on the load compensation device shown in Figure 5 in other embodiments, as shown in Figure 6As shown, the first input end of the first comparator 3011 is a positive input end, and the second input end of the first comparator 3011 is a negative input end; the first input end of the second comparator 3012 is a positive input end, and the second input end of the second comparator 3012 is a negative input end; at least one capacitor is further arranged between the driving end and the grounding end of the first switch module 3022; at least one capacitor is further arranged between the driving end and the grounding end of the second switch module 3032.

[0114] It should be noted that the first load 3021 and the second load 3031 are only used to balance the load of the outdoor unit side and the indoor unit side. When the first load 3021 is connected to the power supply of the indoor unit, the voltage of the low-voltage power supply of the outdoor unit rises. When the detected voltage value reaches the first reference voltage value, the comparison module 301 outputs a first disconnect signal, and the first switch module 3022 controls the first load 3021 to disconnect based on the first disconnect signal. At this time, the disconnection of the first load 3021 may cause the detected voltage value to rapidly drop below the first reference voltage value, and the comparison module 301 outputs a first connection signal, indicating that the first load 3021 is connected to the power supply of the indoor unit again, thereby causing the voltage of the low-voltage power supply of the outdoor unit to fluctuate around the lower limit value of the set voltage interval. Based on similar principles, when the second load 3031 is connected to the low-voltage power supply of the outdoor unit, the power supply connection state of the second load 3031 may repeatedly switch, which may cause the voltage of the low-voltage power supply of the outdoor unit to fluctuate around the upper limit value of the set voltage interval.

[0115] It can be understood that in some embodiments, at least one capacitor is arranged between the driving end and the grounding end of the first switch module 3022, and at least one capacitor is arranged between the driving end and the grounding end of the second switch module 3032. When the output end signal of the first comparator 3011 or the output end signal of the second comparator 3012 is switched from a high-level signal to a low-level signal, because the high-level signal can charge the capacitor during the output of the high-level signal, after the output end signal of the first comparator 3011 or the output end signal of the second comparator 3012 is switched to a low-level signal, the driving end of the corresponding switch module will not immediately receive a low-level signal based on the voltage stabilizing effect of the capacitor, and the corresponding first load 3021 or second load 3031 will not be immediately disconnected, thereby solving the problem of fluctuation of the voltage of the low-voltage power supply of the outdoor unit around the lower limit value or the upper limit value of the set voltage interval.

[0116] Here, in order to solve the problem of fluctuation of the voltage of the low-voltage power supply of the outdoor unit around the lower limit value or the upper limit value of the set voltage interval, in some embodiments, as shown in FIG. 4, the first comparator 3011 and the second comparator 3012 are connected in series, and the output end signal of the first comparator 3011 is connected to the first input end of the second comparator 3012, and the output end signal of the second comparator 3012 is connected to the second input end of the first comparator 3011. Figure 7As shown, the load compensation device further comprises a third reference voltage circuit 306 and a fourth reference voltage circuit 307, both of which are connected to the comparison module 301. The comparison module 301 is further configured to compare the detection voltage value with a third reference voltage value, and generate a first disconnect signal after the detection voltage value rises to the third reference voltage value when the first load 3021 is connected to the power supply of the indoor unit. The comparison module 301 is further configured to compare the detection voltage value with a fourth reference voltage value, and generate a second disconnect signal after the detection voltage value drops to the fourth reference voltage value when the second load 3031 is connected to the low-voltage power supply of the outdoor unit. The third reference voltage value is the output voltage value of the third reference voltage circuit 306, and the fourth reference voltage value is the output voltage value of the fourth reference voltage circuit 307. The third reference voltage value is greater than the first reference voltage value, and the fourth reference voltage value is less than the second reference voltage value.

[0117] It can be understood that when the first load 3021 connected by the load compensation device is disconnected, the detection voltage value will not quickly drop below the first reference voltage value because the third reference voltage value is greater than the first reference voltage value, thereby effectively avoiding the frequent switching of the power supply connection state of the first load 3021. When the second load 3031 connected by the load compensation device is disconnected, the detection voltage value will not quickly rise above the second reference voltage value because the fourth reference voltage value is less than the second reference voltage value, thereby effectively avoiding the frequent switching of the power supply connection state of the second load 3031.

[0118] Exemplarily, the comparison module 301 further comprises a third comparator 3013, a fourth comparator 3014, a first logic circuit module 3015, and a second logic circuit module 3016. The first input end of the third comparator 3013 is connected to the third reference voltage circuit 306, and the second input end of the third comparator 3013 is connected to the detection voltage, for comparing the detection voltage value with the third reference voltage value. The first input end of the fourth comparator 3014 is connected to the detection voltage, and the second input end of the fourth comparator 3014 is connected to the fourth reference voltage circuit 307, for comparing the detection voltage value with the fourth reference voltage value. The input end of the first logic circuit module 3015 is connected to the first comparator 3011 and the third comparator 3013, and the output end of the first logic circuit module 3015 is connected to the driving end of the first switch module 3022. The input end of the second logic circuit module 3016 is connected to the second comparator 3012 and the fourth comparator 3014, and the output end of the second logic circuit module 3016 is connected to the driving end of the second switch module 3032.

[0119] It can be understood that, in the examples of the present application, the connection mode of the third comparator 3013 and the third reference voltage circuit 306, the low-voltage power supply of the outdoor unit, and the connection mode of the fourth comparator 3014 and the fourth reference voltage circuit 307, the low-voltage power supply of the outdoor unit are not specifically limited.

[0120] It can be understood that, as shown in the connection mode, Figure 7 the first input end of the third comparator 3013 is specifically a positive input end, the second input end of the third comparator 3013 is specifically a negative input end, the first input end of the fourth comparator 3014 is specifically a positive input end, and the second input end of the fourth comparator 3014 is specifically a negative input end; if the detection voltage value is less than the third reference voltage value, the third comparator 3013 outputs a high-level signal, if the detection voltage value is greater than or equal to the third reference voltage value, the third comparator 3013 outputs a low-level signal; if the detection voltage value is greater than the fourth reference voltage value, the fourth comparator 3014 outputs a high-level signal, if the detection voltage value is less than or equal to the fourth reference voltage value, the fourth comparator 3014 outputs a low-level signal. The comparison module 301 generates a first access signal or a first disconnection signal based on the output end signal of the first comparator 3011 and the output end signal of the third comparator 3013, and generates a second access signal or a second disconnection signal based on the output end signal of the second comparator 3012 and the output end signal of the fourth comparator 3014.

[0121] Exemplarily, based on the connection mode shown in Figure 7 , as shown in Figure 8 , the first logic circuit module 3015 includes a first AND gate circuit 801, a first NOT gate circuit 802, a second AND gate circuit 803, and a first OR gate circuit 804. The input end of the first AND gate circuit 801 is connected to the output end of the first comparator 3011 and the output end of the third comparator 3013. The input end of the first NOT gate circuit 802 is connected to the output end of the first comparator 3011. The input end of the second AND gate circuit 803 is connected to the output end of the first NOT gate circuit 802 and the output end of the third comparator 3013. The input end of the first OR gate circuit 804 is connected to the output end of the first AND gate circuit 801 and the output end of the second AND gate circuit 803, and the output end of the first OR gate circuit 804 is connected to the driving end of the first switch module 3022 and the input end of the second AND gate circuit 803.

[0122] It can be understood that when the output signal of the first OR gate circuit 804 is a high level signal, the first load 3021 is connected to the power supply of the indoor unit; when the first load 3021 is connected to the power supply of the indoor unit, if the detection voltage value is greater than or equal to the first reference voltage value and less than the third reference voltage value, the output signal of the first comparator 3011 is a low level signal, the output signal of the third comparator 3013 is a high level signal, the output signal of the first NOT gate circuit 802 is a high level signal, and the output signal of the second AND gate circuit 803 is a high level signal, at this time, the output signal of the first OR gate circuit 804 maintains a high level signal, and the first load 3021 will not be disconnected from the power supply of the indoor unit.

[0123] As shown in the example of Fig. 1, the second logic circuit module 3016 includes a third AND gate circuit 901, a second NOT gate circuit 902, a fourth AND gate circuit 903, and a second OR gate circuit 904. Figure 9 As shown in the example of Fig. 1, the second logic circuit module 3016 includes a third AND gate circuit 901, a second NOT gate circuit 902, a fourth AND gate circuit 903, and a second OR gate circuit 904.

[0124] It can be understood that when the output signal of the second OR gate circuit 904 is a high level signal, the second load 3031 is connected to the low-voltage power supply of the outdoor unit; when the second load 3031 is connected to the low-voltage power supply of the outdoor unit, if the detection voltage value is less than or equal to the second reference voltage value and greater than the fourth reference voltage value, the output signal of the second comparator 3012 is a low level signal, the output signal of the fourth comparator 3014 is a high level signal, the output signal of the second NOT gate circuit 902 is a high level signal, and the output signal of the fourth AND gate circuit 903 is a high level signal, at this time, the output signal of the second OR gate circuit 904 maintains a high level signal, and the second load 3031 will not be disconnected from the low-voltage power supply of the outdoor unit.

[0125] As shown in the example of Fig. 1, the load compensation device is arranged in the outdoor unit.

[0126] It can be understood that the load compensation device is arranged in the outdoor unit, which can reduce the cross-wiring between the outdoor unit and the indoor unit.

[0127] Here, the rated voltage of the power supply of the indoor unit should be within the safe voltage range for human body, and in one application example, the rated voltage of the power supply of the indoor unit is 28V.

[0128] In an application example, the rated voltage of the low-voltage power supply of the outdoor unit is 16V, the rated voltage of the control power supply of the outdoor unit is 5V, and the set voltage interval of the low-voltage power supply of the outdoor unit is 15.9-23.3V.

[0129] In an application example of the present application, based on Figure 6 the load compensation device shown in the figure, the circuit of the load compensation device is as shown in the figure Figure 10 The comparison module 301 includes a first operational amplifier chip IC1, the first reference voltage circuit 304 includes a first resistor R1 and a second resistor R2, and the control power supply of the outdoor unit is connected to the +IN1 pin of the first operational amplifier chip IC1 after being divided by the first reference voltage circuit 304; the second reference voltage circuit 305 includes a third resistor R3 and a fourth resistor R4, and the control power supply of the outdoor unit is connected to the -IN2 pin of the first operational amplifier chip IC1 after being divided by the second reference voltage circuit 305; the comparison module 301 further includes a fifth resistor R5, a sixth resistor R6, a seventh resistor R7, and an eighth resistor R8, the low-voltage power supply of the outdoor unit is connected to the -IN1 pin of the first operational amplifier chip IC1 after being divided by the fifth resistor R5 and the sixth resistor R6, and the low-voltage power supply of the outdoor unit is connected to the +IN2 pin of the first operational amplifier chip IC1 after being divided by the seventh resistor R7 and the eighth resistor R8; the first operational amplifier chip IC1 includes a first comparator 3011 and a second comparator 3012, the +IN1 pin and the -IN1 pin are the input terminals of the first comparator 3011, the OUT1 pin is the output terminal of the first comparator 3011, the +IN2 pin and the -IN2 pin are the input terminals of the second comparator 3012, and the OUT2 pin is the output terminal of the second comparator 3012. The first switch module 3022 includes an optocoupler OC and a first switch tube Q1, the first load 3021 includes a fifteenth resistor R16 and a sixteenth resistor R16, the ninth resistor R9 and the tenth resistor R10 connected to the drive end of the optocoupler OC are connected to the OUT1 pin of the first operational amplifier chip IC1, when the OUT1 pin of the first operational amplifier chip IC1 outputs a high-level signal, the output end of the optocoupler OC is turned on, the power supply of the indoor unit is connected to the drive end of the first switch tube Q1 after being divided by the thirteenth resistor R13 and the fourteenth resistor R14, the first switch tube Q1 is turned on, and the fifteenth resistor R16 and the sixteenth resistor R16 are connected to the power supply of the indoor unit. The second switch module 3032 includes a second switch tube Q2, the second load 3031 includes a twelfth resistor R12, the eleventh resistor R11 connected to the drive end of the second switch tube Q2 is connected to the OUT2 pin of the first operational amplifier chip IC1, when the OUT2 pin of the first operational amplifier chip IC1 outputs a high-level signal, the second switch tube Q2 is turned on, and the twelfth resistor R12 is connected to the low-voltage power supply of the outdoor unit. The drive end of the optocoupler OC is further provided with a first capacitor C1 and a second capacitor C2, and the drive end of the second switch tube Q2 is further provided with a third capacitor C3, a fourth capacitor C4, and a seventeenth resistor R17.

[0130] Here, the optical coupler OC can also be replaced by a switch tube.

[0131] In an application example of the present application, based on the load compensation device shown in FIG. 1, the circuit of the comparison module 301 is as shown in FIG. 2. Figure 7 Figure 11 The comparison module 301 includes a second operational amplifier chip IC2, and the control power supply of the outdoor unit is connected to the +IN1 pin of the second operational amplifier chip IC2 after being divided by the first reference voltage circuit 304. The third reference voltage circuit 306 includes an eighteenth resistor R18 and a nineteenth resistor R19, and the control power supply of the outdoor unit is connected to the +IN2 pin of the first operational amplifier chip IC1 after being divided by the third reference voltage circuit 306. The comparison module 301 further includes a twentieth resistor R20 and a twenty-first resistor R21, and the low-voltage power supply of the outdoor unit is connected to the -IN1 pin of the second operational amplifier chip IC2 after being divided by the fifth resistor R5 and the sixth resistor R6, and the low-voltage power supply of the outdoor unit is connected to the -IN2 pin of the second operational amplifier chip IC2 after being divided by the twentieth resistor R20 and the twenty-first resistor R21. The second operational amplifier chip IC2 includes a first comparator 3011 and a third comparator 3013, the +IN1 pin and the -IN1 pin are the input terminals of the first comparator 3011, the OUT1 pin is the output terminal of the first comparator 3011, the +IN2 pin and the -IN2 pin are the input terminals of the third comparator 3013, and the OUT2 pin is the output terminal of the third comparator 3013. The OUT1 pin and the OUT2 pin of the second operational amplifier chip IC2 are connected to the first logic circuit module 3015.

[0132] Here, the third reference voltage value is 17.5V, and the switching logic relationship of the first logic circuit module 3015 is as shown in FIG. 3. Figure 12

[0133] In an application example of the present application, based on the load compensation device shown in FIG. 1, the circuit of the comparison module 301 is as shown in FIG. 2. Figure 7 Figure 11 Figure 13 ​​​​The circuit shown. The comparison module 301 also includes a third op-amp chip IC3, the control power supply of the outdoor unit is connected to the-IN2 pin of the third op-amp chip IC3 after being divided by the second reference voltage circuit 305; the fourth reference voltage circuit 307 includes a twenty-second resistor R22 and a twenty-third resistor R23, the control power supply of the outdoor unit is connected to the-IN1 pin of the first op-amp chip IC1 after being divided by the fourth reference voltage circuit 307; the comparison module 301 also includes a twenty-fourth resistor R24 and a twenty-fifth resistor R25, the low-voltage power supply of the outdoor unit is connected to the+IN2 pin of the third op-amp chip IC3 after being divided by the seventh resistor R7 and the eighth resistor R8, and the low-voltage power supply of the outdoor unit is connected to the+IN1 pin of the third op-amp chip IC3 after being divided by the twenty-fourth resistor R24 and the twenty-fifth resistor R25; the third op-amp chip IC3 includes a second comparator 3012 and a fourth comparator 3014, the+IN1 pin and the-IN1 pin are input terminals of the fourth comparator 3014, the OUT1 pin is an output terminal of the fourth comparator 3014, the+IN2 pin and the-IN2 pin are input terminals of the second comparator 3012, and the OUT2 pin is an output terminal of the second comparator 3012. The OUT1 pin and the OUT2 pin of the third op-amp chip IC3 are connected to the second logic circuit module 3016.

[0134] Here, the fourth reference voltage value is 21.7V, and the switching logic relationship of the second logic circuit module 3016 is as shown in the following table. Figure 14

[0135] The embodiment of the present application provides a split type air conditioner, which comprises an indoor unit and an outdoor unit, an input power supply of the outdoor unit is used to supply power to a load of the indoor unit after primary voltage conversion, and the power supply after the primary voltage conversion is used to supply power to a low-voltage load of the outdoor unit after secondary voltage conversion, and the split type air conditioner further comprises the aforementioned load compensation device.

[0136] Exemplarily, the split type air conditioner comprises a switching power supply 100, the switching power supply 100 comprises a primary winding, a secondary winding and an auxiliary winding 101, the primary winding is connected to an input power supply of the outdoor unit, the input power supply of the outdoor unit is used to supply power to a load of the indoor unit after voltage conversion by the secondary winding, and the input power supply of the outdoor unit is used to supply power to a low-voltage load of the outdoor unit after voltage conversion by the auxiliary winding 101.

[0137] It should be noted that "first", "second", and the like are used to distinguish similar objects, and do not necessarily have to be used to describe a specific order or sequence.

[0138] In addition, the technical solutions described in the embodiments of the present application can be combined arbitrarily without conflict.

[0139] ​The above merely provides the specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of the changes or replacements within the technical scope disclosed by the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A load compensation device for an air conditioner, characterized in that, The application is applied to a split air conditioner, the split air conditioner comprises an indoor unit and an outdoor unit, an input power supply of the outdoor unit is used to supply power to a load of the indoor unit after primary voltage transformation, the load of the outdoor unit is supplied with power after secondary voltage transformation, and the load compensation device comprises: a comparison module connected to a low-voltage power supply of the outdoor unit, used to detect a voltage of the low-voltage power supply of the outdoor unit and generate a detected voltage value, the comparison module is further used to compare the detected voltage value with a first reference voltage value, generate a first access signal after determining that the detected voltage value is less than the first reference voltage value, and compare the detected voltage value with a second reference voltage value, generate a second access signal after determining that the detected voltage value is greater than the second reference voltage value; a first load compensation circuit connected to a first output end of the comparison module and a power supply of the indoor unit, used to access a first load of the first load compensation circuit to the power supply of the indoor unit based on the first access signal; a second load compensation circuit connected to a second output end of the comparison module and a low-voltage power supply of the outdoor unit, used to access a second load of the second load compensation circuit to the low-voltage power supply of the outdoor unit based on the second access signal; wherein the second reference voltage value is greater than the first reference voltage value.

2. The load compensation device of claim 1, wherein, The load compensation device is arranged in the outdoor unit.

3. The load compensation device of claim 2, wherein, The load compensation device further comprises: a first reference voltage circuit connected to the comparison module, the first reference voltage value being an output voltage value of the first reference voltage circuit; a second reference voltage circuit connected to the comparison module, the second reference voltage value being an output voltage value of the second reference voltage circuit.

4. The load compensation device of claim 3, wherein, The first load compensation circuit further comprises: a first switch module, a driving end of the first switch module being connected to the first output end of the comparison module, the first switch module being used to control a power supply access state of the first load; The second load compensation circuit further comprises: a second switch module, a driving end of the second switch module being connected to the second output end of the comparison module, the second switch module being used to control a power supply access state of the second load.

5. The load compensation device of claim 4, wherein, The comparison module comprises: a first comparator, a first input end of the first comparator being connected to the first reference voltage circuit, a second input end of the first comparator being connected to a detected voltage, the first comparator being used to compare the detected voltage value with the first reference voltage value; a second comparator, a first input end of the second comparator being connected to the low-voltage power supply of the outdoor unit, a second input end of the second comparator being connected to the detected voltage, the second comparator being used to compare the detected voltage value with the second reference voltage value; wherein the detected voltage value is a voltage value of the detected voltage, and the detected voltage is obtained based on the low-voltage power supply of the outdoor unit.

6. The load compensation device of claim 5, wherein, an output end of the first comparator being connected to a driving end of the first switch module, the first comparator being further used to output a first disconnect signal if it is determined that the detected voltage value is greater than or equal to the first reference voltage value; An output end of the second comparator is connected to a driving end of the second switch module, and the second comparator is further configured to output a second disconnect signal if it is determined that the detection voltage value is less than or equal to the second reference voltage value.

7. The load compensation device of claim 6, wherein, The first input end of the first comparator is a positive input end, and the second input end of the first comparator is a negative input end; the first input end of the second comparator is a positive input end, and the second input end of the second comparator is a negative input end; at least one capacitor is further arranged between the driving end and the grounding end of the first switch module; at least one capacitor is further arranged between the driving end and the grounding end of the second switch module.

8. The load compensation apparatus of claim 5, wherein, The load compensation device further comprises a third reference voltage circuit and a fourth reference voltage circuit, and the third reference voltage circuit and the fourth reference voltage circuit are both connected to the comparison module. The comparison module is further configured to compare the detection voltage value with a third reference voltage value, and generate a first disconnect signal after determining that a first load is connected to the power supply of the indoor unit and the detection voltage value rises to the third reference voltage value. The comparison module is further configured to compare the detection voltage value with a fourth reference voltage value, and generate a second disconnect signal after determining that a second load is connected to the low-voltage power supply of the outdoor unit and the detection voltage value drops to the fourth reference voltage value. The third reference voltage value is an output voltage value of the third reference voltage circuit, and the fourth reference voltage value is an output voltage value of the fourth reference voltage circuit; the third reference voltage value is greater than the first reference voltage value, and the fourth reference voltage value is less than the second reference voltage value.

9. The load compensation device of claim 8, wherein, The comparison module further comprises: a third comparator, a first input end of the third comparator being connected to the third reference voltage circuit, and a second input end of the third comparator being connected to the detection voltage, for comparing the detection voltage value with the third reference voltage value; a fourth comparator, a first input end of the fourth comparator being connected to the detection voltage, and a second input end of the fourth comparator being connected to the fourth reference voltage circuit, for comparing the detection voltage value with the fourth reference voltage value; a first logic circuit module, an input end of the first logic circuit module being connected to the first comparator and the third comparator, and an output end of the first logic circuit module being connected to the driving end of the first switch module; a second logic circuit module, an input end of the second logic circuit module being connected to the second comparator and the fourth comparator, and an output end of the second logic circuit module being connected to the driving end of the second switch module.

10. The load compensation device of claim 9, wherein, The first logic circuit module comprises: a first AND gate circuit, input ends of the first AND gate circuit being connected to an output end of the first comparator and an output end of the third comparator; a first NOT gate circuit, an input end of the first NOT gate circuit being connected to the output end of the first comparator; a second AND gate circuit, input ends of the second AND gate circuit being connected to an output end of the first NOT gate circuit and the output end of the third comparator; A first OR gate circuit, an input end of the first OR gate circuit being connected with an output end of the first AND gate circuit and an output end of the second AND gate circuit, an output end of the first OR gate circuit being connected with a driving end of the first switch module and an input end of the second AND gate circuit.

11. The load compensation apparatus of claim 9, wherein, The second logic circuit module comprises: A third AND gate circuit, an output end of the third AND gate circuit being connected with an output end of the second comparator and an output end of the fourth comparator; A second NOT gate circuit, an input end of the second NOT gate circuit being connected with an output end of the second comparator; A fourth AND gate circuit, an input end of the fourth AND gate circuit being connected with an output end of the second NOT gate circuit and an output end of the fourth comparator; A second OR gate circuit, an input end of the second OR gate circuit being connected with an output end of the third AND gate circuit and an output end of the fourth AND gate circuit, an output end of the second OR gate circuit being connected with a driving end of the second switch module and an input end of the fourth AND gate circuit.

12. Load compensation device according to any of claims 6 to 11, characterized in that The first access signal and the second access signal are level signals; When the driving end of the first switch module receives the first access signal, the first switch module controls the first load to access the power supply of the indoor unit; when the driving end of the first switch module receives a level signal opposite to the first access signal, the first switch module controls the first load to be disconnected from the power supply of the indoor unit; When the driving end of the second switch module receives the second access signal, the second switch module controls the second load to access the power supply of the indoor unit; when the driving end of the second switch module receives a level signal opposite to the second access signal, the second switch module controls the second load to be disconnected from the low-voltage power supply of the outdoor unit; The first disconnection signal is a level signal opposite to the first access signal; the second disconnection signal is a level signal opposite to the second access signal.

13. A split-type air conditioner, characterized by comprising: The split-type air conditioner comprises an indoor unit and an outdoor unit, an input power supply of the outdoor unit is used to supply power to the indoor unit load after primary voltage transformation, the power supply after the primary voltage transformation is used to supply power to the low-voltage load of the outdoor unit after secondary voltage transformation, and the split-type air conditioner further comprises the load compensation device according to any one of claims 1 to 12.

14. The split-type air conditioner according to claim 13, wherein The split-type air conditioner comprises a switching power supply, the switching power supply comprises a primary winding, a secondary winding and an auxiliary winding, the primary winding is connected with the input power supply of the outdoor unit, the input power supply of the outdoor unit is used to supply power to the indoor unit load after voltage transformation through the secondary winding, and is used to supply power to the low-voltage load of the outdoor unit after voltage transformation through the auxiliary winding.

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