Energy storage appliance and power supply system

Abstract

The present application provides an energy storage appliance and a power supply system. The energy storage appliance comprises an appliance body and an energy storage battery. The appliance body has an energy storage compartment. A first connector configured to be connected to a mains grid and a second connector connected to a load circuit are formed on the outer surface of the appliance body. The energy storage battery is mounted in the energy storage compartment. An input end of the energy storage battery is electrically connected to the first connector to charge the energy storage battery by means of the mains grid. An output end of the energy storage battery is electrically connected to the appliance body and the second connector to supply power to the appliance body and the load circuit.

Description

Energy storage appliance and power supply system

[0001] The present application claims priority to the Chinese patent application No. 202411369887.1, filed on September 27, 2024, to the Chinese Patent Office, the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to the technical field of energy storage, in particular to an energy storage appliance and a power supply system. BACKGROUND

[0003] In the field of battery technology, energy storage products can be used as backup power supplies to provide power for the entire house during power outages, ensuring power supply and improving power supply stability. SUMMARY

[0004] In related technologies, energy storage products are usually sold independently. When installed, they not only occupy indoor space, but also need to be drilled into the wall to be reliably fixed. This results in not only inconvenient installation of energy storage products, but also occupation of indoor space.

[0005] The present application provides an energy storage appliance. The energy storage appliance comprises:

[0006] An appliance body having an energy storage chamber, the outer surface of the appliance body being formed with a first connector configured to connect to a commercial power grid and a second connector configured to connect to a load circuit;

[0007] An energy storage battery installed in the energy storage chamber, the input end of the energy storage battery being electrically connected to the first connector and configured to charge the energy storage battery through the commercial power grid, the output end of the energy storage battery being electrically connected to the appliance body and the second connector and configured to supply power to the appliance body and the load circuit.

[0008] The present application also provides a power supply system. The power supply system comprises:

[0009] A load circuit;

[0010] A load electrically connected to the load circuit;

[0011] The energy storage appliance as described above;

[0012] The energy storage battery is electrically connected to the load circuit through the second connector. ADVANTAGEOUS EFFECTS

[0013] The power supply system provided by the application stores the energy storage battery in the energy storage chamber of the electrical appliance body. Based on the built-in energy storage battery, the energy storage battery no longer occupies indoor space, which can increase the usable area of the house, and can be transported and installed with the electrical appliance body at the same time, reducing the installation cost and improving the installation efficiency. Among them, the commercial power grid can charge the energy storage battery through the first joint, and the energy storage battery can store the electric energy as a backup or directly output. The energy storage battery can directly supply power to the electrical appliance body, or supply power to the load circuit through the second joint, realizing the power consumption of the electrical appliance body and other loads. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 is a structural schematic diagram of an energy storage electrical appliance provided by an embodiment of the application.

[0015] Fig. 2 is an electrical transmission schematic diagram of an electrical appliance body, a commercial power grid and a load circuit provided by an embodiment of the application.

[0016] Fig. 3 is an electrical transmission schematic diagram of an energy storage battery, a conversion module, a commercial power grid and a load circuit provided by an embodiment of the application.

[0017] Fig. 4 is an electrical transmission schematic diagram of an electrical appliance body, a photovoltaic mechanism, a commercial power grid and a load circuit provided by an embodiment of the application.

[0018] Fig. 5 is a structural schematic diagram of a first joint, a second joint, a third joint and a fourth joint on an electrical appliance body provided by an embodiment of the application.

[0019] Fig. 6 is a structural schematic diagram of an energy storage battery provided by an embodiment of the application.

[0020] Fig. 7 is a structural schematic diagram of a refrigeration circuit provided by an embodiment of the application.

[0021] Fig. 8 is a cross-sectional view of an energy storage chamber of an electrical appliance body provided by an embodiment of the application.

[0022] Fig. 9 is a cross-sectional view of an energy storage chamber of an electrical appliance body provided by an embodiment of the application.

[0023] BRIEF DESCRIPTION OF DRAWINGS:

[0024] 10, appliance body; 110, energy storage chamber; 1110, energy storage evaporator; 1120, working cavity; 1130, refrigeration cavity; 1140, storage cavity; 1150, backflow cavity; 120, first joint; 130, second joint; 140, third joint; 150, fourth joint; 160, freezing chamber; 1610, freezing evaporator; 170, refrigeration chamber; 1710, refrigeration evaporator; 20, energy storage battery; 210, battery module; 220, single battery cell; 230, support; 240, flow channel; 250, end plate; 30, conversion module; 40, photovoltaic mechanism; 50, power grid; 60, load circuit; 70, refrigeration mechanism; 710, compressor; 720, condenser; 80, first partition; 810, air inlet; 820, air return; 90, second partition; 910, air permeable hole. Embodiments of the present application

[0025] As shown in FIGS. 1-9, the present application provides an energy storage appliance. The energy storage appliance includes an appliance body 10 and an energy storage battery 20. The appliance body 10 has an energy storage chamber 110. The outer surface of the appliance body 10 is formed with a first joint 120 configured to connect the power grid 50 and a second joint 130 configured to connect the load circuit 60. The energy storage battery 20 is installed in the energy storage chamber 110. The input end of the energy storage battery 20 is electrically connected with the first joint 120 and is configured to charge the energy storage battery 20 through the power grid 50. The output end of the energy storage battery 20 is electrically connected with the appliance body 10 and the second joint 130 and is configured to supply power to the appliance body 10 and the load circuit 60.

[0026] In the present application, the energy storage battery 20 is stored in the energy storage chamber 110 in the appliance body 10. Based on the built-in energy storage battery 20, the energy storage battery 20 no longer occupies indoor space, which can increase the usable area of the house and can be transported and installed simultaneously with the appliance body 10, reducing installation costs and improving installation efficiency. The power grid 50 can charge the energy storage battery 20 through the first joint 120, and the energy storage battery 20 can store electrical energy as a backup or directly output. The energy storage battery 20 can directly supply power to the appliance body 10 or supply power to the load circuit 60 through the second joint 130 to realize the power consumption of the appliance body 10 and other loads.

[0027] The appliance body 10 can be a refrigerator, a freezer, a washing machine, a dryer, a water heater, an air conditioner, a dishwasher, or other household appliances. The appliance body 10 can also be a commercial oven, a commercial bread oven, a food processing machine, or other commercial appliances. The present application can set the appliance body 10 as a refrigerator. The appliance body 10 can reserve an energy storage chamber 110, or the appliance body 10 can be configured with an energy storage chamber 110 in the upper space, so that the energy storage battery 20 can be stored in the energy storage chamber 110.

[0028] The load circuit 60 corresponds to the electrical appliance body 10. When the electrical appliance body 10 is a household electrical appliance, the load circuit 60 is a household circuit. At this time, the energy storage battery 20 can supply power to the load circuit 60 through the second joint 130 to supply power to other household loads. When the electrical appliance body 10 is a commercial electrical appliance, the load circuit 60 is a commercial circuit. At this time, the energy storage battery 20 can supply power to the load circuit 60 through the second joint 130 to supply power to other commercial loads.

[0029] Since the energy storage battery 20 directly supplies power to the electrical appliance body 10, when a sudden power outage occurs, the electrical appliance body 10 can remain in a powered state, which can ensure the continuous use of the electrical appliance body 10. As shown in FIG. 2, the power grid 50 can supply power to the load circuit 60 through the energy storage battery 20, and the energy storage battery 20 can simultaneously store energy and supply power. Thus, when a sudden power outage occurs, the load on the load circuit 60 can remain in a powered state, which can ensure the continuous use of the load.

[0030] Based on the fact that the power grid 50 can supply power to the load circuit 60 through the energy storage battery 20, the energy storage battery 20 can store energy during the off-peak period of electricity and supply power to the load on the load circuit 60 during the peak period of electricity. Thus, by reasonably selecting the energy storage time, the pressure on the power grid can be reduced, the energy consumption of the power system can be reduced, energy saving and emission reduction can be achieved, and the expenditure of electricity bills can be reduced.

[0031] As shown in FIG. 5, the first joint 120 is integrated on the outer surface of the electrical appliance body 10, and the first joint 120 can be electrically connected to the power grid 50. The power grid 50 can supply power to other electrical appliances only through the first joint 120- conversion module 30- energy storage battery 20- second joint 130- load circuit 60. Alternatively, the power grid 50 can also be electrically connected to the load circuit 60 through another branch, thereby supplying power to other electrical appliances.

[0032] The second joint 130 is integrated on the outer surface of the electrical appliance body 10, and the second joint 130 can be directly electrically connected to the load circuit 60, so that a socket does not need to be provided on the electrical appliance body 10. Of course, the second joint 130 can also be provided as a socket, and the load circuit 60 is plugged into the socket through a plug to achieve electrical connection with the second joint 130.

[0033] As shown in FIG. 3, in some embodiments, the energy storage electrical appliance further comprises a conversion module 30. The conversion module 30 is installed in the energy storage chamber 110. The conversion module 30 is electrically connected between the first joint 120 and the input end of the energy storage battery 20, and is configured to convert the alternating current of the power grid 50 into direct current and deliver it to the energy storage battery 20.

[0034] The conversion module 30 adopts a PCS (Power Conversion System). Since the energy storage battery 20 can only store direct current, the alternating current in the power grid 50 is converted into direct current by the conversion module 30 and then input to the energy storage battery 20, so as to realize the storage of electric energy.

[0035] Please continue to refer to FIGS. 4 and 5. In some embodiments, the outer surface of the electric appliance body 10 further forms a third joint 140, which is electrically connected to the input end of the energy storage battery 20. The energy storage appliance further comprises a photovoltaic mechanism 40. The photovoltaic mechanism 40 is electrically connected to the third joint 140 and is configured to supply direct current to the energy storage battery 20.

[0036] It can be understood that the photovoltaic mechanism 40 can convert light energy into electric energy. The photovoltaic mechanism 40 is electrically connected to the third joint 140, so that the energy storage battery 20 can be continuously charged without consuming the electric energy of the power grid 50. Thus, by setting the photovoltaic mechanism 40 to generate electric energy, the pressure on the power grid can be reduced, the energy consumption of the power system can be reduced, energy saving and emission reduction can be achieved, and the expenditure of electricity bills can be reduced.

[0037] In some embodiments, the photovoltaic mechanism 40 can be replaced by a wind power generation mechanism, a tidal energy generation mechanism, a geothermal energy generation mechanism, or other natural energy generation devices.

[0038] In some embodiments, the photovoltaic mechanism 40 can be replaced by a wind power generation mechanism, a tidal energy generation mechanism, a geothermal energy generation mechanism, or other natural energy generation devices.

[0039] Please continue to refer to FIGS. 4 and 5. In some embodiments, the outer surface of the electric appliance body 10 further forms a fourth joint 150 configured to be connected to the power grid 50. The conversion module 30 is further electrically connected between the output end of the energy storage battery 20 and the fourth joint 150 and is configured to convert the direct current stored in the energy storage battery 20 into alternating current and deliver it to the power grid 50.

[0040] It can be understood that based on the photovoltaic mechanism 40, electric energy can be continuously generated. When the power consumption speed of the electric appliance is less than the power generation speed of the photovoltaic mechanism 40, the electric energy in the energy storage battery 20 will gradually accumulate. At this time, the direct current in the energy storage battery 20 can be converted into alternating current by the conversion module 30 and delivered to the power grid 50 to supply power to the power grid 50. Thus, additional economic sources can be obtained by selling electricity, and income can be improved.

[0041] As shown in FIG. 7, in some embodiments, the electric appliance body 10 has a refrigeration mechanism 70, and the energy storage chamber 110 is provided with an energy storage evaporator 1110. The refrigeration mechanism 70 is connected to the energy storage evaporator 1110 and is configured to supply low-temperature and low-pressure liquid refrigerant to the energy storage evaporator 1110.

[0042] It can be understood that the energy storage battery 20 generates heat during operation. By arranging the energy storage evaporator 1110 in the energy storage chamber 110, the refrigeration mechanism 70 provides low-temperature and low-pressure liquid refrigerant to the energy storage evaporator 1110. The low-temperature and low-pressure liquid refrigerant can be phase changed into low-temperature and low-pressure gaseous refrigerant in the energy storage evaporator 1110. The phase change of the refrigerant can absorb a large amount of heat in the energy storage chamber 110, so as to cool the energy storage battery 20.

[0043] As shown in FIGS. 8 and 9, in some embodiments, the energy storage chamber 110 is provided with a first partition plate 80. The first partition plate 80 is configured to divide the energy storage chamber 110 into a working cavity 1120 and a refrigeration cavity 1130. The first partition plate 80 is configured with an air inlet 810 and an air return port 820 that are configured to communicate the working cavity 1120 and the refrigeration cavity 1130. The energy storage battery 20 is located in the working cavity 1120, and the energy storage evaporator 1110 is located in the refrigeration cavity 1130.

[0044] The working cavity 1120 and the refrigeration cavity 1130 are separated by the first partition plate 80, so that the energy storage battery 20 and the energy storage evaporator 1110 can be installed independently. Based on the arrangement of the air inlet 810 and the air return port 820, the airflow direction can be limited. That is, the cold air in the refrigeration cavity 1130 can only blow into the working cavity 1120 from the air inlet 810, and the hot air in the working cavity 1120 can only blow into the refrigeration cavity 1130 from the air return port 820, so as to cool the hot air in the refrigeration cavity 1130 and prevent the airflow from being mixed to affect the heat dissipation effect.

[0045] In some embodiments, a fan is arranged on the first partition plate 80 at the air inlet 810 and / or the air return port 820. It can be understood that the energy storage chamber 110 is a closed cavity. The fan generates airflow to make the air in the working cavity 1120 and the refrigeration cavity 1130 flow continuously, so that the cold air can quickly enter the working cavity 1120 to cool the energy storage battery 20.

[0046] In some embodiments, a fan is arranged on the first partition plate 80 only at the air inlet 810. At this time, the air inlet end of the fan faces the refrigeration cavity 1130, and the air outlet end faces the working cavity 1120.

[0047] In some embodiments, a fan is arranged on the first partition plate 80 only at the air return port 820. At this time, the air inlet end of the fan faces the working cavity 1120, and the air outlet end faces the refrigeration cavity 1130.

[0048] In some embodiments, a fan is arranged on the first partition plate 80 at the air inlet 810 and the air return port 820. The air inlet end of the fan located at the air inlet 810 faces the refrigeration cavity 1130, and the air outlet end faces the working cavity 1120. The air inlet end of the fan located at the air return port 820 faces the working cavity 1120, and the air outlet end faces the refrigeration cavity 1130.

[0049] Referring to FIG. 9, in some embodiments, the energy storage chamber 110 is provided with a second partition 90. The second partition 90 divides the working cavity 1120 into a storage cavity 1140 and a return cavity 1150. The second partition 90 is provided with a gas permeable hole 910 communicating the storage cavity 1140 and the return cavity 1150. The energy storage battery 20 is located in the storage cavity 1140. The air inlet 810 communicates the storage cavity 1140 and the refrigeration cavity 1130. The air return 820 communicates the return cavity 1150 and the refrigeration cavity 1130.

[0050] It can be understood that the second partition 90 can divide the working cavity 1120 into the storage cavity 1140 and the return cavity 1150 arranged independently. The energy storage battery 20 is arranged in the storage cavity 1140, and the return cavity 1150 serves as a heat return passage. Thus, the air flow direction can be limited to prevent air flow from being turbulent and affecting the heat dissipation effect. The air flow direction is: the refrigeration cavity 1130 - the air inlet 810 - the storage cavity 1140 - the gas permeable hole 910 - the return cavity 1150 - the air return 820 - the refrigeration cavity 1130.

[0051] The first partition 80 is vertically arranged to form the working cavity 1120 and the refrigeration cavity 1130 arranged left and right. The upper and lower ends of the first partition 80 are fixed to the upper surface and the lower surface of the energy storage chamber 110. The fixing methods can be fastener fixing, welding fixing, adhesive fixing, etc. The second partition 90 is horizontally arranged to form the storage cavity 1140 and the return cavity 1150 arranged up and down. One end of the second partition 90 is fixed to the side surface of the energy storage chamber 110, and the other end is fixed to the first partition 80. The fixing methods can be fastener fixing, welding fixing, adhesive fixing, etc.

[0052] Based on the horizontal arrangement of the second partition 90, the energy storage battery 20 is fixed to the second partition 90.

[0053] Referring to FIGS. 1 and 7, in some embodiments, the electric appliance body 10 includes a refrigerator. The electric appliance body 10 also has a freezer compartment 160 and a refrigeration compartment 170. The freezer compartment 160, the refrigeration compartment 170, and the energy storage chamber 110 are stacked in order from bottom to top. The refrigeration mechanism 70 includes a compressor 710, a condenser 720, and a throttling member. The input end of the condenser 720 is connected to the output end of the compressor 710. The input end of the throttling member is connected to the output end of the condenser 720. The freezer compartment 160 is provided with a freezer evaporator 1610. The refrigeration compartment 170 is provided with a refrigeration evaporator 1710. The freezer evaporator 1610 is connected between the output end of the throttling member and the input end of the compressor 710. The refrigeration evaporator 1710 is connected between the output end of the throttling member and the input end of the compressor 710. The energy storage evaporator 1110 is connected between the output end of the throttling member and the input end of the compressor 710.

[0054] It can be understood that the electric appliance body 10 is a refrigerator, and the refrigerator can be powered by the energy storage battery 20, so that the corruption speed of food in the refrigerator after a sudden power failure is effectively reduced. Meanwhile, the refrigerator will be equipped with a refrigeration mechanism 70 with a compressor 710, a condenser 720 and a throttling device, and the energy storage battery 20 in the energy storage chamber 110 borrows the refrigeration mechanism of the refrigerator to cool down, which can effectively solve the problem of difficult heat dissipation of the household storage product and reduce the heat dissipation cost of the household storage product.

[0055] In the embodiment of the application, the energy storage chamber 110 is arranged above the refrigerator, so that the space above the refrigerator can be effectively utilized to prevent waste of the space above the refrigerator. Meanwhile, the energy storage battery 20 does not occupy other space in the room, the use area of the house is increased, and the energy storage battery 20 does not destroy the aesthetics of the room.

[0056] The compressor 710 forms high-temperature and high-pressure gaseous refrigerant. The high-temperature and high-pressure gaseous refrigerant flows into the condenser 720 from the refrigerant pipeline, and can form high-temperature and high-pressure liquid refrigerant in the condenser 720 after phase change. The high-temperature and high-pressure liquid refrigerant is throttled and decompressed by the throttling device to form low-temperature and low-pressure liquid refrigerant, and flows into the freezing evaporator 1610, the refrigerating evaporator 1710 and the energy storage evaporator 1110, respectively. The low-temperature and low-pressure liquid refrigerant cools the freezing chamber 160 through the freezing evaporator 1610, so that the freezing chamber 160 is in a low-temperature state, and the freezing of food is realized. The low-temperature and low-pressure liquid refrigerant cools the refrigerating chamber 170 through the refrigerating evaporator 1710, so that the refrigerating chamber 170 is in a low-temperature state, and the refrigeration of food is realized. The low-temperature and low-pressure liquid refrigerant cools the energy storage chamber 110 through the energy storage evaporator 1110, so as to cool the energy storage battery 20 in the energy storage chamber 110. The low-temperature and low-pressure liquid refrigerant can be phase changed into low-temperature and low-pressure gaseous refrigerant in the freezing evaporator 1610, the refrigerating evaporator 1710 and the energy storage evaporator 1110. The low-temperature and low-pressure gaseous refrigerant flows back to the compressor 710, and one cycle of refrigerant circulation is completed.

[0057] The throttling device can adopt a capillary tube, which is configured to form low-temperature and low-pressure liquid refrigerant by throttling and decompressing the high-temperature and high-pressure liquid refrigerant discharged from the condenser 720. Of course, the throttling device can also adopt an expansion valve, and a reasonable throttling device can be selected based on cost and the like.

[0058] Based on the demand for cold energy in the freezing chamber 160, the refrigerating chamber 170 and the energy storage chamber 110, the flow of the low-temperature and low-pressure liquid refrigerant in the corresponding refrigerant circuit is reasonably distributed.

[0059] In some embodiments, the energy storage battery 20 comprises a battery module 210 and a battery management system (BMS) electrically connected with the battery module 210. The conversion module 30 is integrated in the battery management system. Alternatively, the conversion module 30 is integrated in the battery module 210.

[0060] It can be understood that the battery management system can monitor, manage and protect the battery module 210 in real time, and can realize battery state detection, battery performance balancing, fault diagnosis and protection, power calculation and prediction, etc. As shown in FIG. 6, the conversion module 30 is integrated in the battery management system to realize the integrated setting of the conversion module and the energy storage battery 20. Alternatively, the conversion module 30 is integrated in the battery module 210 to realize the integrated setting of the conversion module and the energy storage battery 20. Thus, the installation of the conversion module can be facilitated.

[0061] The energy storage battery 20 can comprise a plurality of battery modules 210. The volume of the energy storage chamber 110 can be reasonably designed according to the size of the electrical product, and the number and distribution of the battery modules 210 can be reasonably selected based on the volume of the energy storage chamber 110.

[0062] As shown in FIGS. 8 and 9, in some embodiments, the battery module 210 comprises at least two single battery cells 220 arranged at intervals. A support 230 is arranged between each adjacent two single battery cells 220. The support 230 is formed with a flow channel 240. The flow channel 240 is configured as a flow path of cold air.

[0063] It can be understood that the support 230 not only supports the adjacent two single battery cells 220, but also the flow channel 240 formed in the support 230 can flow through the cold air. The cold air can exchange heat with the support 230 and the single battery cell 220 when passing through the flow channel 240, thereby achieving heat dissipation of the single battery cell 220.

[0064] The working cavity 1120 can be divided into the storage cavity 1140 and the backflow cavity 1150 distributed above and below based on the second partition plate 90. The flow channel 240 formed in the support 230 is generally conducted in the direction from top to bottom. At this time, the air flow direction is: the refrigeration cavity 1130 - the air inlet 810 - the storage cavity 1140 - the flow channel 240 - the air permeable hole 910 - the backflow cavity 1150 - the air outlet 820 - the refrigeration cavity 1130.

[0065] In some embodiments, the support 230 is a square frame structure, and a plurality of reinforcing ribs substantially in the shape of “Z” and a plurality of flow channels 240 are arranged in the square frame structure. Based on the frame structure of the support 230, the weight of the support 230 can be light, and the energy storage battery 20 is prevented from being too heavy to affect the carrying and moving of the electrical product.

[0066] In some embodiments, the battery module 210 further comprises end plates 250 located at both ends, which are attached to the monomer battery cells 220 located at the ends.

[0067] In some embodiments, the energy storage chamber 110 is provided with a second partition plate 90. The second partition plate 90 divides the working cavity 1120 of the energy storage chamber 110 into a storage cavity 1140 and a reflux cavity 1150. The second partition plate 90 is provided with air permeable holes 910 that communicate the storage cavity 1140 and the reflux cavity 1150. The air permeable holes 910 correspond to the flow channels 240 one by one.

[0068] It can be understood that the hot air blown out of the flow channels 240 directly flows into the reflux cavity 1150 from the air permeable holes 910. Each flow channel 240 corresponds to each air permeable hole 910 to prevent air flow from being mixed to affect the cooling effect.

[0069] The embodiment of the present application also provides a power supply system. The power supply system comprises a load circuit 60, a load, and an energy storage appliance as in the foregoing embodiments. The load is electrically connected to the load circuit 60. The energy storage battery 20 is electrically connected to the load circuit 60 through the second joint 130.

[0070] In the embodiment of the present application, the energy storage battery 20 is stored in the energy storage chamber 110 constructed in the appliance body 10. Based on the built-in energy storage battery 20, the energy storage battery 20 no longer occupies indoor space, which can increase the usable area of the house, and can be moved and installed together with the appliance body 10, thereby reducing the installation cost and improving the installation efficiency. The commercial power grid 50 can supply direct current to the energy storage battery 20 through the first joint 120 and the conversion module 30, and the energy storage battery 20 can store the electric energy as a backup or directly output. The energy storage battery 20 can supply power to the appliance body 10 directly or supply power to the load circuit 60 through the second joint 130, thereby realizing the power consumption of the appliance body 10 and other loads.

[0071] Since the energy storage battery 20 directly supplies power to the load on the appliance body 10, when a sudden power failure occurs, the appliance body 10 can remain in a power supply state, which can ensure that the appliance body 10 and the load do not experience power failure, and can ensure the continuous use of the load.

[0072] Based on the fact that the commercial power grid 50 can supply power to the load circuit 60 through the energy storage battery 20, the energy storage battery 20 can store electric energy during the power valley period and supply power to the load on the load circuit 60 during the power peak period. Therefore, by reasonably selecting the energy storage time, the pressure on the power grid can be reduced, the energy consumption of the power system can be reduced, energy saving and emission reduction can be realized, and the expenditure of electricity bills can be reduced.

Claims

1. An energy storage appliance, comprising: an appliance body having an energy storage chamber, an outer surface of the appliance body being formed with a first connector configured to be connected to a commercial power grid and a second connector configured to be connected to a load circuit; an energy storage battery installed in the energy storage chamber, an input end of the energy storage battery being electrically connected to the first connector and configured to be charged by the commercial power grid, an output end of the energy storage battery being electrically connected to the appliance body and the second connector and configured to supply power to the appliance body and the load circuit.

2. The energy storage appliance of claim 1, wherein, The energy storage appliance further comprises: a conversion module installed in the energy storage chamber, the conversion module being electrically connected between the first connector and the input end of the energy storage battery and configured to convert alternating current of the commercial power grid into direct current and deliver the direct current to the energy storage battery.

3. The energy storage appliance of claim 2, wherein, The outer surface of the appliance body is further formed with a third connector electrically connected to the input end of the energy storage battery, and the energy storage appliance further comprises: a photovoltaic mechanism electrically connected to the third connector and configured to supply direct current to the energy storage battery.

4. The energy storage appliance of claim 3, wherein, The outer surface of the appliance body is further formed with a fourth connector configured to be connected to the commercial power grid, and the conversion module is further electrically connected between the output end of the energy storage battery and the fourth connector and configured to convert the direct current stored in the energy storage battery into alternating current and deliver the alternating current to the commercial power grid.

5. The energy storage appliance of any one of claims 1-4, wherein, The appliance body has a refrigeration mechanism, and the energy storage chamber is provided with an energy storage evaporator, and the refrigeration mechanism is connected to the energy storage evaporator and configured to supply low-temperature and low-pressure liquid refrigerant to the energy storage evaporator.

6. The energy storage appliance of claim 5, wherein, The energy storage chamber is provided with a first partition plate configured to divide the energy storage chamber into a working cavity and a refrigeration cavity, wherein the first partition plate is configured with an air inlet and an air return configured to communicate the working cavity and the refrigeration cavity, the energy storage battery is located in the working cavity, and the energy storage evaporator is located in the refrigeration cavity.

7. The energy storage appliance of claim 6, wherein, The first partition plate is provided with a fan at the air inlet and / or the air return.

8. The energy storage appliance of claim 6 or 7, wherein, The energy storage chamber is provided with a second partition plate, the second partition plate divides the working cavity into a storage cavity and a return cavity, and the second partition plate is configured with a ventilation hole communicating the storage cavity and the return cavity, wherein the energy storage battery is located in the storage cavity, the air inlet communicates the storage cavity and the refrigeration cavity, and the air return communicates the return cavity and the refrigeration cavity.

9. The energy storage appliance of any one of claims 5-8, wherein, The appliance body comprises a refrigerator, and the appliance body further has a freezing chamber and a refrigerating chamber, the freezing chamber, the refrigerating chamber and the energy storage chamber are stacked in order from bottom to top, and the refrigeration mechanism comprises: a compressor; a condenser, an input end of the condenser being connected to an output end of the compressor; a throttling device, an input end of the throttling device being connected to an output end of the condenser; wherein the freezing chamber is provided with a freezing evaporator, the refrigerating chamber is provided with a refrigerating evaporator, the freezing evaporator is connected between an output end of the throttling device and an input end of the compressor, the refrigerating evaporator is connected between the output end of the throttling device and the input end of the compressor, and the energy storage evaporator is connected between the output end of the throttling device and the input end of the compressor.

10. The energy storage appliance of any one of claims 2-9, wherein, The energy storage battery comprises a battery module and a battery management system, the battery management system is electrically connected with the battery module, the conversion module is integrated in the battery management system, or the conversion module is integrated in the battery module.

11. The energy storage appliance of claim 10, wherein, The battery module comprises at least two single cells arranged at intervals, a support is arranged between each adjacent two single cells, the support is formed with a flow channel, and the flow channel is configured as a flow path of cold air.

12. The energy storage appliance of claim 11, wherein, The energy storage chamber is provided with a second partition plate, the second partition plate divides a working cavity of the energy storage chamber into a storage cavity and a reflux cavity, a gas permeation hole communicating the storage cavity and the reflux cavity is formed on the second partition plate, and the gas permeation hole corresponds to the flow channel one by one.

13. A power supply system, comprising: a load circuit; a load electrically connected with the load circuit; the energy storage electric appliance according to any one of claims 1-12; wherein the energy storage battery is electrically connected with the load circuit through the second joint.

Images