Refrigerator and main transformer integrated plate thereof

Abstract

The utility model provides a refrigerator and a main transformer integrated board thereof, and particularly provides a refrigerator capable of directly receiving and using direct current provided by external direct current, a direct current power supply circuit of the refrigerator does not carry out conversion processing on the direct current in the process of processing the direct current, and the direct current power supply circuit does not carry out conversion processing on the direct current. Instead, power can be directly supplied to the load based on the direct current, and the energy storage battery is charged, so that the structural complexity is reduced, and the direct current processing efficiency is improved when the refrigerator is connected to the external direct current power supply.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of refrigerators, and in particular to a refrigerator and a main transformer integrated panel thereof. BACKGROUND

[0002] Some refrigerators are provided with energy storage batteries. When the refrigerator is connected to an external power supply, the external power supply can supply power to the compressor and other loads in the refrigerator, and can also charge the energy storage batteries, so that the energy storage batteries store energy. When the external power supply is abnormal, the energy storage batteries in the refrigerator can replace the external power supply to continuously supply power to the load, thereby ensuring the stability and continuity of the refrigerator operation.

[0003] With the continuous development of new energy technology, some refrigerators can be connected to a photovoltaic or other new energy power grid to obtain direct current power from the power grid to supply power to the load. However, the power supply circuit of the refrigerator in the prior art cannot directly receive and process the direct current power provided by the external direct current power supply, but needs to process the direct current power through direct current to alternating current and alternating current to direct current before supplying power to the load, which greatly reduces the power supply efficiency.

[0004] Therefore, it is a technical problem to be solved in the art to provide a refrigerator that can directly receive and use direct current power and a corresponding circuit. UTILITY MODEL CONTENT

[0005] The present application provides a refrigerator and a main transformer integrated panel thereof, which can directly receive and use direct current power provided by an external direct current power supply.

[0006] The first aspect of the present application provides a refrigerator, comprising: a cabinet configured with a refrigeration compartment having a taking and placing opening; a door body rotatably connected with the cabinet to open or close the taking and placing opening; a temperature adjustment system for adjusting the temperature in the refrigeration compartment; a power supply system for supplying power to the temperature adjustment system, the power supply system comprising: an energy storage battery; a direct current power supply circuit connected to the energy storage battery and the temperature adjustment system; a control circuit configured to: when the direct current power supply circuit is connected to an external direct current power supply, control the direct current power supply circuit to make the external direct current power supply supply power to the temperature adjustment system through the direct current power supply circuit, or make the external direct current power supply supply power to the temperature adjustment system through the direct current power supply circuit and charge the energy storage battery; when the direct current power supply circuit is not connected to the external direct current power supply, control the direct current power supply circuit to make the energy storage battery supply power to the temperature adjustment system through the direct current power supply circuit.

[0007] The direct current power supply circuit of the refrigerator provided in the embodiment does not convert the direct current during processing of the direct current, does not need to set a direct current to alternating current conversion circuit for converting the direct current into alternating current, and does not need to set an alternating current related processing circuit, thereby reducing the structural complexity of the power supply system and improving the efficiency of processing the direct current when the refrigerator is connected to the external direct current power supply. Therefore, the refrigerator provided in the embodiment can directly receive and use the direct current provided by the external direct current power supply, and the efficiency of supplying power to the load and charging the energy storage battery based on the direct current is high.

[0008] In one embodiment, the direct current power supply circuit comprises: a first switch module, a first end of which is configured to receive the direct current provided by the external direct current power supply, and a second end of which is connected to the temperature adjustment system, when the first switch module is turned on, the external direct current power supply supplies power to the temperature adjustment system through the first switch module, or the external direct current power supply charges the energy storage battery through the first switch module; and a second switch module, a first end of which is connected to the energy storage battery, and a second end of which is connected to the temperature adjustment system, when the second switch module is turned on, the energy storage battery supplies power to the temperature adjustment system through the second switch module.

[0009] The direct current power supply circuit of the refrigerator provided in the embodiment realizes the processing of supplying power to the temperature adjustment system and charging the energy storage battery by the external direct current power supply and the processing of supplying power to the temperature adjustment system by the energy storage battery through the switch module, the switch module has a simple structure and a simple processing logic, thereby reducing the software and hardware implementation requirements and difficulty of the control circuit, and reducing the hardware cost required for implementing the direct current power supply circuit.

[0010] In one embodiment, the direct current power supply circuit of the refrigerator provided in the embodiment further comprises: an electromagnetic interference (EMI) module, a first end of which is connected to the external direct current power supply, and a second end of which is connected to a filter module, configured to filter electromagnetic interference signals; and the filter module, a first end of which is connected to the EMI module, and a second end of which is connected to the first end of the first switch module, configured to filter noise signals.

[0011] In the refrigerator provided in the embodiment, the EMI module and the filter module of the direct current power supply circuit process the direct current, which can improve the effectiveness and stability of the direct current and further improve the power supply efficiency of the direct current power supply circuit based on the direct current.

[0012] In one embodiment, the first switch module comprises: a first MOS tube, a first IGBT or a first relay; and the second switch module comprises: a second MOS tube, a second IGBT or a second relay.

[0013] The implementation mode of the plurality of different switch modules can improve the setting flexibility of the direct current power supply circuit, and the direct current power supply circuit can be applied to more different scenes.

[0014] In one embodiment, the control circuit is specifically configured to: when the direct current power supply circuit is connected to an external direct current power supply and the remaining power of the energy storage battery is greater than a first preset power value, control the first switch module to be turned on and the second switch module to be turned off; when the direct current power supply circuit is connected to the external direct current power supply and the remaining power of the energy storage battery is less than or equal to the first preset power value, control the first switch module to be turned on and the second switch module to be turned on; and when the direct current power supply circuit is not connected to the external direct current power supply and the remaining power of the energy storage battery is greater than a second preset power value, control the second switch module to be turned on.

[0015] The control circuit can control the direct current power supply circuit in different states such as whether the external direct current power supply is connected, and the remaining power of the energy storage battery, thereby improving the control logic of the control circuit and the control granularity, and further improving the use scene of the refrigerator.

[0016] In one embodiment, the first switch module includes a diode, and the second switch module includes a second MOS tube, a second IGBT, or a second relay.

[0017] The first switch module is implemented by a diode in the direct current power supply circuit of the refrigerator, so that the direct current power supply circuit has the technical effects of simple structure and low cost, and is more conducive to the practical application and popularization of the embodiment.

[0018] In one embodiment, the control circuit is specifically configured to: when the direct current power supply circuit is connected to an external direct current power supply and the remaining power of the energy storage battery is greater than a first preset power value, control the second switch module to be turned off; when the direct current power supply circuit is connected to the external direct current power supply and the remaining power of the energy storage battery is less than or equal to the first preset power value, control the second switch module to be turned on; and when the direct current power supply circuit is not connected to the external direct current power supply and the remaining power of the energy storage battery is greater than a second preset power value, control the second switch module to be turned on.

[0019] The control circuit can control the direct current power supply circuit in different states such as whether the external direct current power supply is connected, and the remaining power of the energy storage battery, thereby improving the control logic of the control circuit and the control granularity, and further improving the use scene of the refrigerator.

[0020] In one embodiment, the temperature adjustment system comprises: a compressor; an inverter driving circuit connected to the power supply system and the compressor, configured to receive direct current provided by the power supply system, convert the direct current into alternating current and drive the compressor.

[0021] The implementation of the temperature adjustment system in the refrigerator provided in this embodiment is relatively simple, and the inverter driving circuit can directly drive the compressor according to the direct current provided by the power supply system, thereby having the technical effects of simple structure and low cost.

[0022] In one embodiment, the direct current power supply circuit, the control circuit and the inverter driving circuit are all arranged on the main inverter integrated board of the refrigerator.

[0023] The refrigerator provided in this embodiment has the main control circuit and the frequency conversion control circuit of the compressor arranged on one circuit board, so that the main inverter integrated board has high integration, can reduce the occupation of the internal space of the refrigerator, and can improve the communication efficiency between different circuits arranged on the main inverter integrated board.

[0024] In one embodiment, the main inverter integrated board is further provided with one or more of the following: a switching power supply connected to the direct current power supply circuit, the direct current power supply circuit being further configured to supply power to the switching power supply; a direct current load driving connected to the direct current power supply circuit, the direct current power supply circuit being further configured to supply power to the direct current load driving; a main control and frequency conversion control module connected to the control circuit, the switching power supply and the direct current load driving, respectively, and configured to control the control circuit, the switching power supply and the direct current load driving; a display module connected to the main control and frequency conversion control module, the main control and frequency conversion control module being further configured to control the display module; and a communication module connected to the main control and frequency conversion control module, the main control and frequency conversion control module being further configured to control the communication module.

[0025] The main inverter integrated board of the refrigerator provided in this embodiment is provided with different functional modules, thereby further improving the integration degree of the main inverter integrated board, and based on different functional modules, the processing logic of the refrigerator can be enriched and optimized, the functions that can be implemented by the refrigerator are enriched, and the user experience of the refrigerator is improved.

[0026] In one embodiment, the energy storage battery and the main inverter integrated board are both arranged on the top of the refrigerator, or the energy storage battery and the main inverter integrated board are both arranged on the back of the refrigerator, or the energy storage battery is detachably arranged outside the refrigerator.

[0027] In this embodiment, the energy storage battery is arranged on the top or back of the refrigerator, which is easy for heat dissipation, disassembly, maintenance and replacement of the battery, and the main inverter integrated board is also arranged on the top of the refrigerator, so that the energy storage battery is close to the control board, which is also conducive to the control of the energy storage battery.

[0028] In one embodiment, the parameter of the energy storage battery is set to one or more of the following: the voltage range of the energy storage battery is 36VDC-48VDC or 310VDC-370VDC; the thickness of the energy storage battery is less than or equal to 25CM; the capacity of the energy storage battery is less than or equal to 1.5KWH.

[0029] In this embodiment, the thickness of the energy storage voltage 101 is set to facilitate the setting and installation of the energy storage battery, reduce the impact on the overall thickness and volume of the refrigerator 1, and the capacity can achieve a more balanced setting of capacity and volume. The setting of the voltage range can be set according to different charging needs, and has stronger flexibility.

[0030] The second aspect of the application provides a main transformer integrated board of a refrigerator, comprising: a power supply system and an inverter drive circuit; the power supply system comprises: an energy storage battery, a direct current power supply circuit and a control circuit, the direct current power supply circuit is connected with the energy storage battery and the inverter drive circuit; the control circuit is configured to: when the direct current power supply circuit is connected with an external direct current power supply, control the direct current power supply circuit to make the external direct current power supply provide direct current to the inverter drive circuit through the direct current power supply circuit, or make the external direct current power supply supply power to the inverter drive circuit through the direct current power supply circuit and charge the energy storage battery; when the direct current power supply circuit is not connected with the external direct current power supply, control the direct current power supply circuit to make the energy storage battery provide direct current to the inverter drive circuit through the direct current power supply circuit; the inverter drive circuit is connected with the power supply system and the compressor of the refrigerator, and is used to receive the direct current provided by the power supply system, convert the direct current into alternating current and drive the compressor.

[0031] The direct current power supply circuit in the main transformer integrated board provided in this embodiment does not convert the direct current during processing of the direct current, does not need to set a direct current to alternating current conversion circuit for converting the direct current into alternating current, and also does not need to set an alternating current related processing circuit, thereby reducing the structural complexity of the power supply system and improving the efficiency of processing the direct current by the refrigerator when accessing the external direct current power supply. Therefore, the main transformer integrated board of the refrigerator provided in this embodiment can directly receive and use the direct current provided by the external direct current power supply, and the main transformer integrated board of the refrigerator is based on the direct current to supply power to the load and charge the energy storage battery, and has high efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without any creative effort.

[0033] Figure 1 A structural schematic diagram of an embodiment of the refrigerator provided by the present application;

[0034] Figure 2 A circuit structural schematic diagram of an embodiment of the refrigerator provided by the present application;

[0035] Figure 3 A circuit structural schematic diagram of an embodiment of the refrigerator provided by the present application;

[0036] Figure 4 A structural schematic diagram of an embodiment of the refrigerator provided by the present application;

[0037] Figure 5 A structural schematic diagram of another embodiment of the refrigerator provided by the present application. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only represent some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without any creative effort fall within the scope of protection of the present application.

[0039] The terms "first", "second", "third", "fourth" and the like (if any) in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to include only those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0040] With the continuous development of home appliance technology, energy storage technology, and new energy technology, some refrigerators have begun to be equipped with energy storage batteries. When the refrigerator is connected to an external power source, the external power source can supply power to the refrigerator's compressor and other loads, and also charge the energy storage battery to store energy. When the external power source connected to the refrigerator is abnormal, the energy storage battery installed in the refrigerator can take over and continuously supply power to the load, ensuring the refrigerator's continuous and stable operation.

[0041] In existing technologies, some refrigerators can already be connected to the power grids of new energy sources such as photovoltaic power. The power supply circuit in the refrigerator can obtain DC power from the new energy grid, thereby supplying power to the load and charging the battery. However, refrigerators capable of receiving and processing DC power are not yet widely used in the current technology. Most refrigerator power supply circuits can only use AC power. Therefore, in order to process the DC power obtained from the external DC power source, the power supply circuit in the refrigerator needs to convert the DC power to AC power, and then convert the AC power back to DC power according to the existing AC power processing methods before supplying power to the load and charging the energy storage battery. This results in low efficiency of the power supply circuit in the current technology when connecting to the external DC power source to supply power to the load and charge the battery based on DC power.

[0042] Based on this, this application provides a refrigerator and its integrated main transformer board, enabling the refrigerator to directly receive and use DC power supplied by an external DC power source, thereby improving the efficiency of the refrigerator when supplying power to the load and charging the battery based on DC power. The technical solution of this application will be described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments.

[0043] Figure 1 A schematic diagram of the structure of an embodiment of the refrigerator provided in this application is shown below. Figure 1 The refrigerator 1 shown includes:

[0044] The box and door were not in Figure 1 As shown, the refrigerator body has a refrigeration compartment with an access port, and the door is rotatably connected to the body to open or close the access port. This application does not limit the specific implementation of the refrigerator body and door of the refrigerator 1.

[0045] The temperature adjustment system 12 is used to adjust the temperature inside the refrigeration compartment. In one embodiment, the temperature adjustment system 12 includes a compressor that can be used to run more frequently or faster when the temperature inside the refrigeration compartment of the refrigerator 1 rises, in order to accelerate the circulation of refrigerant and lower the temperature, and when the temperature inside the refrigeration compartment reaches a set value, the operation of the compressor will slow down or stop to save energy and maintain a stable temperature.

[0046] The power supply system 11 can be used to connect the external power source 2, and the power supply system 11 is also connected to the temperature adjustment system 12 for supplying power to the temperature adjustment system 12.

[0047] Specifically, as shown in the power supply system 11 includes: Figure 1

[0048] The energy storage battery 101 is used to store electric energy.

[0049] The direct current power supply circuit 102 is connected to the energy storage battery 101 and the temperature adjustment system 12 respectively, and can also be used to connect the external power source 2.

[0050] The control circuit 103 is connected to the direct current power supply circuit 102 and can be used to control the direct current power supply circuit 102.

[0051] More specifically, the control circuit 103 provided in the embodiments of the present application is specifically configured to:

[0052] When the direct current power supply circuit 102 is connected to the external direct current power source 2, the control circuit 103 controls the direct current power supply circuit 102 to make the external direct current power source 2 supply power to the temperature adjustment system 12 through the direct current power supply circuit 102, or the control circuit 103 controls the direct current power supply circuit 102 to make the external direct current power source 2 supply power to the temperature adjustment system 12 through the direct current power supply circuit 102, and at the same time, make the external direct current power source 2 charge the energy storage battery through the direct current power supply circuit 102.

[0053] When the direct current power supply circuit 102 is not connected to the external direct current power source 2, the control circuit 103 controls the direct current power supply circuit 102 to make the energy storage battery 101 supply power to the temperature adjustment system 12 through the direct current power supply circuit 102.

[0054] In the embodiments of the present application, the direct current power supply circuit 102 can be used to receive direct current provided by the external direct current power source 2, so as to provide direct current to the temperature adjustment system 12 and provide direct current to the energy storage battery 101, and can also be used to receive direct current provided by the energy storage battery 101, so as to provide direct current to the temperature adjustment system 12.

[0055] As can be seen, the direct current power supply circuit 102 does not perform conversion processing on the direct current during processing of the direct current, so the power supply system 11 of the refrigerator 1 provided in the embodiments does not need to be provided with a direct current to alternating current conversion circuit for converting direct current into alternating current, and also does not need to be provided with an alternating current related processing circuit, thereby reducing the structural complexity of the power supply system 11 and improving the efficiency of the refrigerator 1 in processing direct current when connected to the external direct current power source 2.

[0056] ​In summary, this embodiment provides a refrigerator 1 that can directly receive and use DC power provided by an external DC power source 2. This refrigerator 1 has high efficiency in supplying power to the load and charging the energy storage battery 101 based on DC power. Actual measurements show that, compared to existing technologies, the DC power supply circuit of the refrigerator 1 provided in this embodiment can improve power efficiency by more than 10%.

[0057] Figure 2 A circuit structure diagram of an embodiment of the refrigerator provided in this application is shown below. Figure 2 It shows Figure 1 A specific circuit implementation of the power supply system 11 and the temperature regulation system 12. Specifically, as shown... Figure 2 The DC power supply circuit 102 shown includes:

[0058] The first switch module 1021 has a first terminal for receiving DC power from an external DC power supply 2, and a second terminal connected to the temperature adjustment system 2. When the first switch module 1021 is turned on, the DC power from the external DC power supply 2 can supply power to the temperature adjustment system 12 via the first switch module 1021; alternatively, when the first switch module 1021 is turned on, the DC power from the external DC power supply 2 can charge the energy storage battery 101 via the first switch module 1021.

[0059] The second switch module 1022 has its first end connected to the energy storage battery 101 and its second end connected to the temperature regulation system 2. When the second switch module 1022 is turned on, the DC power provided by the energy storage battery 101 can be supplied to the temperature regulation system 12 through the first switch module 1022.

[0060] The DC power supply circuit 102 of the refrigerator provided in this embodiment realizes the processing of supplying power from the external DC power supply 2 to the temperature adjustment system, charging the energy storage battery 101, and supplying power from the energy storage battery 101 to the temperature adjustment system 12 through the first switch module 1021 and the second switch module 1022. The structure of the switch module is relatively simple and the processing logic is relatively simple, thereby reducing the hardware and software implementation requirements and implementation difficulty of the control circuit 103, and also reducing the hardware cost required to implement the DC power supply circuit 102.

[0061] In one embodiment, such as Figure 2The direct current power supply circuit 102 shown further comprises an electromagnetic interference (EMI) module 1023 and a filter module 1024. The first end of the EMI module 1023 is connected to the external direct current power supply 2, the second end of the EMI module 1023 is connected to the first end of the filter module 1024, and the second end of the filter module 1024 is connected to the first end of the first switch module 1021. The EMI module 1023 is configured to filter electromagnetic interference signals in the direct current, and the filter module 1024 is configured to filter noise signals in the direct current. In the direct current power supply circuit 102 provided in the embodiment, the direct current is processed by the EMI module 1023 and the filter module 1024, which can improve the effectiveness and stability of the direct current and further improve the power supply efficiency of the direct current power supply circuit 11 based on the direct current.

[0062] In an embodiment, the first switch module 1021 can be a first MOS tube, a first IGBT, or a first relay. The second switch module 1022 can be a second MOS tube, a second IGBT, or a second relay. In the embodiment, by providing multiple implementation modes of different switch modules, the setting flexibility of the direct current power supply circuit 11 can be improved, so that it can be applied to more different scenarios.

[0063] In an embodiment, the control circuit 103 is further connected to the external power supply 2, for example Figure 2 In the example shown, the control circuit 103 is connected to the external power supply 2 through the filter module 1024 and the EMI module 1023. The control circuit 103 can obtain the first voltage provided by the filter module 1024 to the first end of the first switch module 1021, and determine whether the direct current power supply circuit 102 is connected to the external power supply 2 and other information according to the first voltage.

[0064] In an embodiment, the control circuit 103 is further connected to the energy storage battery 101. The control circuit 101 can obtain the second voltage provided by the energy storage battery 101 to the first end of the second switch module 1022, and determine the state of charge (SOC) of the energy storage battery 101 and other information according to the second voltage.

[0065] Then, the control circuit 103 can control the first switch module 1021 and the second switch module 1022 according to whether the direct current power supply circuit 11 is connected to the external power supply and the state of charge of the energy storage battery 101 and other information.

[0066] In an embodiment, the control circuit 103 can further receive a first conduction instruction sent by the main control and frequency conversion module 15 of the refrigerator 1, and control the first switch module 1021 to conduct according to the first conduction instruction. The control circuit 103 can further receive a second conduction instruction sent by the main control and frequency conversion module 15 of the refrigerator 1, and control the second switch module 1022 to conduct according to the second conduction instruction.

[0067] In an embodiment, the control circuit 103 is specifically configured to:

[0068] When the DC power supply circuit 102 is connected to the external DC power supply 2, and the remaining power of the energy storage battery 101 is greater than the first preset power value, and the first conduction instruction and the second conduction instruction are received, the control circuit 103 controls the first switch module 1021 to be conductive, and controls the second switch module 1022 to be conductive, so that the external DC power supply 2 supplies power to the temperature adjustment system 12 through the first switch module 1021, and charges the energy storage battery 101 through the first switch module 1021 and the second switch module 1022.

[0069] When the DC power supply circuit 102 is connected to the external DC power supply 2, and the remaining power of the energy storage battery 101 is greater than the first preset power value, and the first conduction instruction is received, the control circuit 103 controls the first switch module 1021 to be conductive, and controls the second switch module 1022 to be conductive, so that the external DC power supply 2 supplies power to the temperature adjustment system 12 through the first switch module 1021, and charges the energy storage battery 101 through the first switch module 1021 and the second switch module 1022.

[0070] When the DC power supply circuit 102 is connected to the external DC power supply 2, and the remaining power of the energy storage battery 101 is less than or equal to the first preset power value, and the first conduction instruction is received, the control circuit 103 controls the first switch module 1021 to be conductive, and controls the second switch module 1022 to be disconnected, so that the external DC power supply 2 supplies power to the temperature adjustment system 12 through the first switch module 1021.

[0071] When the DC power supply circuit 102 is not connected to the external DC power supply 2, and the remaining power of the energy storage battery 101 is greater than the second preset power value, the control circuit 103 controls the second switch module 1022 to be conductive, so that the energy storage battery 101 supplies power to the temperature adjustment system 12 through the second switch module 1022. Alternatively, when the DC power supply circuit 102 is not connected to the external DC power supply 2, and the remaining power of the energy storage battery 101 is greater than the second preset power value, and the second conduction instruction is received, the control circuit 103 controls the second switch module 1022 to be conductive, so that the energy storage battery 101 supplies power to the temperature adjustment system 12 through the second switch module 1022.

[0072] The specific values of the first power preset value and the second power preset value in the embodiments of the present application are not limited, and can be preset or configured in advance by the control circuit 103. The first power preset value is greater than the second power preset value.

[0073] In summary, the direct current power supply circuit 11 of the refrigerator 1 provided in the embodiment can control the direct current power supply circuit 11 in different states such as whether the external direct current power supply 2 is connected, the remaining power of the energy storage battery 101, and the like, thereby improving the control logic of the control circuit 103 and the control granularity, and further improving the use scenarios of the refrigerator 1 provided in the embodiment.

[0074] Figure 3 The circuit structure schematic diagram of the refrigerator provided in the embodiment is as follows, Figure 3 It is shown that Figure 1 the power supply system 11 and the temperature adjustment system 12 are another specific circuit implementation. Specifically, as shown in the direct current power supply circuit 102, Figure 3 compared with the direct current power supply circuit 102 shown in Figure 2 , the first switch module 1021 is implemented by a diode, and other circuit settings are consistent with Figure 2 .

[0075] When the direct current power supply circuit 102 is connected to the external direct current power supply 2, and the remaining power of the energy storage battery 101 is greater than the first preset power value, the control circuit 103 controls the second switch module 1022 to be turned off.

[0076] When the direct current power supply circuit 102 is connected to the external direct current power supply 2, and the remaining power of the energy storage battery 101 is less than or equal to the first preset power value, the control circuit 103 controls the second switch module 1022 to be turned on, so that the external direct current power supply 2 charges the energy storage battery 101 through the first switch module 1021 and the second switch module 1022.

[0077] When the direct current power supply circuit 102 is not connected to the external direct current power supply 2, and the remaining power of the energy storage battery 101 is greater than the second preset power value, the control circuit 103 controls the second switch module 1022 to be turned on, so that the energy storage battery 101 supplies power to the temperature adjustment system 12 through the second switch module 1022.

[0078] In an embodiment, when the energy storage battery 101 discharges, the voltage at the second end of the first switch module 1021 is greater than the voltage at the first end, and when the first switch module 1021 is a diode, the reverse feedback to the external direct current power supply 2 during discharging of the energy storage battery 101 can be prevented, and in order to prevent the diode from being broken down, as shown in Figure 3 , the maximum voltage output by the energy storage battery 101 is not higher than 60VDC or 390VDC.

[0079] In summary, in the direct current power supply circuit 11 provided in the embodiment, the first switch module 1021 is implemented by a diode, so that the direct current power supply circuit has the technical effects of simple structure and low cost, and is more conducive to the practical application and popularization of the embodiment.

[0080] In an embodiment, as shown in the refrigerator 1 of Figure 2 and Figure 3 , the temperature adjustment system 12 specifically comprises a compressor 122 and an inverter drive circuit 121. The inverter drive circuit 121 is connected between the power supply system 11 and the compressor 122, and is configured to receive direct current from the power supply system 11 and convert the direct current into alternating current to drive the compressor 122.

[0081] In an embodiment, as shown in the refrigerator 1 of Figure 2 and Figure 3 , the direct current power supply circuit 102, the control circuit 103 and the inverter drive circuit 121 are all arranged on the main inverter integrated board 10 of the refrigerator 1. The first part S1 of the main inverter integrated board 10 can be referred to as a power supply board, and the second part S2 can be referred to as a main inverter board. The main control and frequency conversion control module 15 in the main inverter integrated board 10 can share circuits on the power supply board. For example, the main control and frequency conversion control module 15, the inverter drive circuit 121 and the like in the refrigerator 1 can share the EMI module 1023 and the filter module 1024, thereby reducing the complexity of the circuit structure of the direct current power supply circuit 101 and the refrigerator 1.

[0082] In the refrigerator provided in the embodiment, the main control circuit and the frequency conversion control circuit of the compressor can be arranged on one circuit board, which is referred to as the main inverter integrated board 10. The main inverter integrated board 10 has high integration, can reduce the occupation of the internal space of the refrigerator 1, and can improve the communication efficiency between different circuits arranged on the main inverter integrated board 10.

[0083] In another embodiment, the main control and frequency conversion in the refrigerator 1 can also be arranged on different circuit boards. The arrangement of the remaining circuits is referred to other embodiments of the present application and will not be described herein.

[0084] In an embodiment, as shown in the main inverter integrated board 10 of Figure 2 and Figure 3 , the second part S2 of the main inverter integrated board 10 further comprises at least one or more of the following:

[0085] The switching power supply 13 is connected to the direct current power supply circuit 102, and the direct current power supply circuit is further configured to supply power to the switching power supply 13.

[0086] The direct current load drive 14 is connected to the direct current power supply circuit 102, and the direct current power supply circuit is further configured to supply power to the direct current load drive 14. The direct current load drive can be used to drive the direct current load arranged in the refrigerator 1, and the direct current load includes a heater, a lighting circuit and the like.

[0087] The display module 16 is connected to the master control and variable frequency control module 15, and the master control and variable frequency control module 15 is also used for controlling the display module 16. The display module 16 can be a display panel or the like, and can be used for querying or displaying the remaining power, voltage, replacement time and the like of the energy storage battery 101.

[0088] The master control and variable frequency control module 15 is connected to the control circuit 103, the switching power supply 13, the direct current load driving 14, the display panel 16 and the communication module 17, and is used for realizing the overall control logic of the refrigerator 1. In an embodiment, the master control and variable frequency control module 15 can communicate with the control circuit 103 through UART or 485 communication, and the control circuit 103, the master control and variable frequency control module 15, the display module 16 and the communication module 17 realize hardware networking and interconnection through a protocol.

[0089] In an embodiment, the control circuit 103 has an abnormality protection function in addition to being used for controlling the charging and discharging of the energy storage battery 101, and communicates with the cloud through the communication module 17, so as to optimize the charging and discharging control of the energy storage battery 101 based on the information obtained from the cloud.

[0090] For example, the control circuit 103 can obtain information of the power grid where the external direct current power supply 2 is connected, and control the time of charging and discharging of the energy storage battery 101 according to the peak and valley information of the power grid, so as to improve the efficiency of the refrigerator 1 through peak clipping and valley filling, and further improve the efficiency of the overall power grid. The control circuit 103 can realize flexible adjustment of the refrigerator through communication with the power grid information, control the energy storage battery 101 of the refrigerator 1 to discharge in the power consumption peak, and control the energy storage battery 101 of the refrigerator 1 to charge in the power consumption valley, so as to achieve the purpose of peak shaving and valley filling. For another example, the control circuit 103 can control the energy storage battery 101 of the refrigerator 1 to discharge for power supply of the load for a short time when the power grid is powered off.

[0091] In an embodiment, the control circuit 103 also has safety protection functions such as over-temperature, over-current, over-voltage and overload of the battery.

[0092] In an embodiment, the information such as the power, voltage, current, equivalent charging times, cumulative charging amount, replacement time, fault diagnosis, own specifications and maintenance of the energy storage battery 101 can be obtained by the control circuit 103 and sent to the display module or a terminal such as a mobile phone of the refrigerator 1, so that an operator can query and maintain the energy storage battery 101 according to the information.

[0093] Figure 4 The structure schematic diagram of an embodiment of the refrigerator provided in the present application shows a setting mode of the energy storage battery 101 and the master and variable integrated board 10 in the refrigerator 1, as shown in Figure 4In the refrigerator 1-1 shown, the energy storage battery 101 and the main transformer integrated board 10 are both arranged on the top of the refrigerator. Among them, the energy storage battery 101 is arranged on the top of the refrigerator to facilitate heat dissipation, disassembly, maintenance and replacement of the battery, and the main transformer integrated board 10 is also arranged on the top of the refrigerator, so that the energy storage battery 101 is close to the control board installation, which is also conducive to the control of the energy storage battery 101.

[0094] Figure 5 The structure schematic diagram of another embodiment of the refrigerator provided in the present application shows a setting mode of the energy storage battery 101 and the main transformer integrated board 10 in a refrigerator 1, as shown in Figure 5 In the refrigerator 1-2 shown, the energy storage battery 101 and the main transformer integrated board 10 are both arranged on the lower part of the back of the refrigerator. Among them, the energy storage battery 101 is arranged on the back of the refrigerator to facilitate heat dissipation, disassembly, maintenance and replacement of the battery, and the main transformer integrated board 10 is also arranged on the back of the refrigerator, so that the energy storage battery 101 is close to the control board installation, which is also conducive to the control of the energy storage battery 101.

[0095] In another embodiment, the energy storage battery 10 can also be arranged outside the shell of the refrigerator 1, which improves the flexibility of the battery setting position and is more conducive to placing the refrigerator 1 in different required spaces in actual application.

[0096] In an embodiment, the parameters of the energy storage battery 101 arranged in the refrigerator 1 provided by the embodiment of the present application are set to one or more of the following:

[0097] The thickness of the energy storage voltage 101 is less than or equal to 25 cm, so as to facilitate the setting and installation of the energy storage battery and reduce the influence on the overall thickness and volume of the refrigerator 1.

[0098] The capacity of the energy storage battery 101 is set to meet the power consumption of the refrigerator 1 for one day, so as to realize more balanced setting of capacity and volume, for example, the capacity can be less than or equal to 1.5 KWH.

[0099] The voltage range of the energy storage battery 101 is 36VDC-48VDC, so as to be compatible with the charging demand of 48VDC of new energy building electricity, and facilitate the refrigerator 1 to receive 48VDC direct current to charge the energy storage battery 101 with maximum efficiency. Alternatively, the voltage range of the energy storage battery 101 is 310VDC-370VDC. Among them, it is compatible with the charging demand of 375VCD of building electricity.

[0100] In an embodiment, the circuit and load in the refrigerator 1 can be set according to the voltage range of the energy storage battery 101, for example, when the voltage range of the energy storage battery 101 is 36VDC-48VDC, the compressor 122 and the heater and other loads in the refrigerator 1 are all set to support 48VDC, so as to realize the direct driving of the refrigerator 1 to the load based on the received 48VDC direct current, thereby greatly improving the power supply efficiency of the refrigerator 1.

[0101] Those skilled in the art can understand that all or part of the steps of the above-mentioned method embodiments can be completed by program instruction related hardware. The foregoing program can be stored in a computer readable storage medium. When the program is executed, the steps of the above-mentioned method embodiments are executed; and the foregoing storage medium includes ROM, RAM, magnetic disc or optical disc and various storage medium capable of storing program codes.

[0102] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A refrigerator, characterized in that, include: The enclosure has a refrigeration compartment with an access port; A door, which is rotatably connected to the box body, to open or close the loading / unloading port; A temperature control system is used to adjust the temperature inside the refrigeration room; A power supply system is used to supply power to the temperature regulation system; The power supply system includes: Energy storage batteries; A DC power supply circuit is connected to the energy storage battery and the temperature regulation system; Control circuit, used to control the DC power supply circuit; The control circuit is specifically configured as follows: When the DC power supply circuit is connected to an external DC power source, the DC power supply circuit is controlled to supply power to the temperature adjustment system through the DC power supply circuit, or to supply power to the temperature adjustment system and charge the energy storage battery through the DC power supply circuit. When the DC power supply circuit is not connected to the external DC power source, the DC power supply circuit is controlled so that the energy storage battery supplies power to the temperature adjustment system through the DC power supply circuit.

2. The refrigerator according to claim 1, characterized in that, The DC power supply circuit includes: The first switch module has a first end for receiving DC power from the external DC power supply and a second end connected to the temperature adjustment system. When the first switch module is turned on, the external DC power supply supplies power to the temperature adjustment system through the first switch module, or the external DC power supply charges the energy storage battery through the first switch module. The second switch module has a first end connected to the energy storage battery and a second end connected to the temperature adjustment system. When the second switch module is turned on, the energy storage battery supplies power to the temperature adjustment system through the second switch module.

3. The refrigerator according to claim 2, characterized in that, The DC power supply circuit also includes: The electromagnetic interference (EMI) module has its first end connected to the external DC power supply and its second end connected to a filter module for filtering out electromagnetic interference signals. The filtering module has its first end connected to the EMI module and its second end connected to the first end of the first switching module, and is used to filter out noise signals.

4. The refrigerator according to claim 3, characterized in that, The first switching module includes: a first MOSFET, a first IGBT, or a first relay; The second switching module includes: a second MOSFET, a second IGBT, or a second relay; The control circuit is specifically configured as follows: When the DC power supply circuit is connected to an external DC power source and the remaining power of the energy storage battery is greater than a first preset power value, the first switch module is controlled to turn on and the second switch module is controlled to turn off. When the DC power supply circuit is connected to an external DC power source, and the remaining power of the energy storage battery is less than or equal to the first preset power value, the first switch module is controlled to turn on, and the second switch module is controlled to turn on. When the DC power supply circuit is not connected to the external DC power source and the remaining power of the energy storage battery is greater than the second preset power value, the second switch module is controlled to turn on.

5. The refrigerator according to claim 3, characterized in that, The first switching module includes: a diode; The second switching module includes: a second MOSFET, a second IGBT, or a second relay; The control circuit is specifically configured as follows: When the DC power supply circuit is connected to an external DC power source and the remaining charge of the energy storage battery is greater than the first preset charge value, the second switch module is controlled to disconnect. When the DC power supply circuit is connected to an external DC power source, and the remaining power of the energy storage battery is less than or equal to the first preset power value, the second switch module is controlled to turn on. When the DC power supply circuit is not connected to the external DC power source and the remaining power of the energy storage battery is greater than the second preset power value, the second switch module is controlled to turn on.

6. The refrigerator according to any one of claims 1-5, characterized in that, The temperature adjustment system includes: compressor; An inverter drive circuit, connected to the power supply system and the compressor, is used to receive DC power provided by the power supply system, convert DC power into AC power, and drive the compressor. The DC power supply circuit, the control circuit, and the inverter drive circuit are all located on the main transformer integrated board of the refrigerator.

7. The refrigerator according to claim 6, characterized in that, The integrated main transformer board is also equipped with one or more of the following: A switching power supply is connected to the DC power supply circuit, and the DC power supply circuit is also used to supply power to the switching power supply. A DC load drive is connected to the DC power supply circuit, which is also used to supply power to the DC load drive. The main control and frequency conversion control module is connected to the control circuit, the switching power supply and the DC load drive respectively, and is used to control the control circuit, the switching power supply and the DC load drive; The display module is connected to the main control and frequency conversion control module, and the main control and frequency conversion control module is also used to control the display module; The communication module is connected to the main control and frequency converter control module, and the main control and frequency converter control module is also used to control the communication module.

8. The refrigerator according to claim 7, characterized in that, Both the energy storage battery and the main transformer integrated board are located on the top of the refrigerator; Alternatively, both the energy storage battery and the main transformer integrated board are located at the back of the refrigerator; Alternatively, the energy storage battery may be detachably mounted on the exterior of the refrigerator.

9. The refrigerator according to any one of claims 1-5, 7 or 8, characterized in that, The parameters of the energy storage battery are set to one or more of the following: The voltage range of the energy storage battery is 36VDC-48VDC or 310VDC-370VDC; The thickness of the energy storage battery is less than or equal to 25 cm; The energy storage battery has a capacity of less than or equal to 1.5 kWh.

10. A main transformer integrated board for a refrigerator, characterized in that, include: The system includes a DC power supply circuit, a control circuit, and an inverter drive circuit, wherein the DC power supply circuit is connected to the energy storage battery and the inverter drive circuit. The control circuit is configured to: when the DC power supply circuit is connected to an external DC power source, control the DC power supply circuit to supply DC power to the inverter drive circuit through the DC power supply circuit, or to supply power to the inverter drive circuit and charge the energy storage battery through the DC power supply circuit; when the DC power supply circuit is not connected to the external DC power source, control the DC power supply circuit to supply DC power to the inverter drive circuit through the DC power supply circuit. The inverter drive circuit is connected to the DC power supply circuit and the refrigerator compressor. It is used to receive DC power provided by the power supply system, convert DC power into AC power, and drive the compressor.

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