Energy storage power supply and household load standby power system

Abstract

The invention discloses an energy storage power supply and a household load standby power system. A controller of the energy storage power supply is configured to: monitor a mains voltage of a single-phase mains terminal; when it is monitored that the voltage of the mains supply is normal, the change-over switch circuit is controlled, so that a first-phase line between the single-phase mains supply end and the split-phase output end is conducted, and first-phase power from the mains supply is provided for the split-phase output interface; the control circuit is used for controlling the change-over switch circuit to conduct a second phase line between the energy storage alternating current end and the split-phase output end, and controlling the direct current and alternating current bidirectional converter to invert the direct current of the battery module into the alternating current so as to provide second phase power for the split-phase output interface; wherein the phase difference A between the second phase electricity and the first phase electricity is larger than or equal to 178 degrees and smaller than or equal to 182 degrees. According to the energy storage power supply, when the single-phase mains supply is used for charging the energy storage power supply, the energy storage power supply can synchronously start split-phase output, so that the use function of the portable energy storage power supply in a specific scene of household emergency standby power is expanded.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of energy storage, in particular to an energy storage power supply and a household load standby power system. BACKGROUND

[0002] With the rapid iteration of new energy technology and the growth of outdoor life and emergency power supply demand, portable energy storage power supplies have become key equipment for household standby, outdoor camping and emergency rescue due to their flexibility and cleanliness. To meet the power demand of refrigerators, air conditioners and even outdoor construction tools, products are evolving towards large capacity and high power. Currently, 3 to 5 degrees of electricity (kWh) capacity products have been popularized on the market, and their maximum output power can cover 3600W to 12000W, which is enough to support most short-term emergency and household standby scenarios.

[0003] In product design, to cover a wide power range from charging electronic products to driving large equipment, mainstream large-capacity portable energy storage power supplies generally integrate multiple output interfaces. Mainstream large-capacity portable energy storage power supplies integrate multiple types of output interfaces: single-phase alternating current interface, usually a national standard or American standard socket, for powering common low-power household appliances; split-phase alternating current interface, mainly a socket that meets the North American NEMA standard (such as L14-30R, 14-50), designed to provide 240V high voltage support for high-power appliances (such as household dryers, large tools) in local residences that use single-phase three-wire split-phase power supply systems.

[0004] However, existing portable energy storage power supply products have limitations in the "charging while discharging" mode: when using single-phase power to charge the energy storage power supply, its alternating current output can usually only support single-phase discharging, and cannot simultaneously start split-phase output. This technical bottleneck limits the full play of the function of portable energy storage power supplies in specific scenarios of household emergency power supply. SUMMARY

[0005] The present application provides an energy storage power supply and a household load standby power system to solve at least one of the above technical problems.

[0006] The present application provides an energy storage power supply, which comprises: a housing; a single-phase input interface and a split-phase output interface arranged on the housing; a battery module, an inverter and a changeover switch circuit arranged in the housing; the single-phase input interface is used to connect to a power grid, and the split-phase output interface is used to connect to a split-phase load; the inverter comprises a direct-current alternating-current bidirectional converter and a controller; the changeover switch circuit comprises a single-phase mains end, an energy storage alternating-current end and a split-phase output end; The single-phase mains power terminal is connected to the single-phase input interface, the energy storage AC terminal is connected to the DC-AC bidirectional converter, and the split-phase output terminal is connected to the split-phase output interface. The controller is configured to: Monitor the mains voltage at the single-phase mains terminal; When the mains voltage is detected to be normal, the switching circuit is controlled to conduct the first phase line between the single-phase mains terminal and the split-phase output terminal to provide the first phase of mains power to the split-phase output interface. And control the switching circuit to turn on the second phase line between the energy storage AC terminal and the split-phase output terminal, and control the DC-AC bidirectional converter to invert the DC power of the battery module into AC power to provide the second phase power to the split-phase output interface; The phase difference A between the second phase and the first phase satisfies 178 degrees ≤ A ≤ 182 degrees.

[0007] In the aforementioned energy storage power supply, when the mains voltage is detected to be normal, the control switch circuit conducts the first phase line between the single-phase mains terminal and the split-phase output terminal to provide the first phase power from the mains to the split-phase output interface. At the same time, the control switch circuit conducts the second phase line between the energy storage AC terminal and the split-phase output terminal, and controls the DC-AC bidirectional converter to invert the DC power of the battery module into AC power to provide the second phase power with a phase difference A from the first phase power to the split-phase output interface. Thus, when the energy storage power supply is charged using single-phase mains power, the energy storage power supply can synchronously start the split-phase output, thereby expanding the use function of the portable energy storage power supply in specific scenarios of home emergency backup power.

[0008] In some embodiments, the inverter further includes a grid tracking module, the controller is connected to the grid tracking module, and the grid tracking module is connected to the single-phase input interface; The power grid tracking module is used to obtain the voltage phase of the single-phase mains terminal; The controller is used to control the phase difference A between the voltage output by the DC-AC bidirectional converter and the voltage of the single-phase mains terminal to satisfy 178 degrees ≤ A ≤ 182 degrees, based on the voltage phase of the single-phase mains terminal.

[0009] Among the aforementioned energy storage power supplies, the energy storage power supply can track the mains voltage, enabling the energy storage power supply and the mains voltage to jointly supply power to the split-phase load.

[0010] In some embodiments, the switching circuit includes a first switching component, a second switching component, and a third switching component. The single-phase mains terminal is connected to the energy storage AC terminal in sequence through the third switching component and the first switching component, and is connected to the split-phase output terminal in sequence through the third switching component and the second switching component. The energy storage AC terminal is connected to the split-phase output terminal in sequence through the first switching assembly and the second switching assembly; The controller is configured to: Controlling the on / off states of the second and third switching components to control the conduction and disconnection of the first phase line between the single-phase mains terminal and the split-phase output terminal; The on / off states of the first and second switching components are controlled to control the conduction and disconnection of the second phase line between the energy storage AC terminal and the split-phase output terminal.

[0011] In the aforementioned energy storage power supply, the first, second, and third switching components work together to easily enable and disable the connection between different terminals.

[0012] In some embodiments, the first phase line includes a first live wire, a neutral wire, and a ground wire between the single-phase mains terminal and the split-phase output terminal, and the second phase line includes a second live wire, a neutral wire, and a ground wire between the energy storage AC terminal and the split-phase output terminal; The first switch assembly includes three first switches, the second switch assembly includes four second switches, and the third switch assembly includes three third switches; The first phase line is provided with a third switch and a second switch on the first live wire, neutral wire and ground wire respectively, and the second phase line is provided with a first switch and a second switch on the second live wire, neutral wire and ground wire respectively.

[0013] In the aforementioned energy storage power supply, the first switch, the second switch, and the third switch work together to enable the energy storage power supply to simultaneously start split-phase output when a single-phase mains power input is received.

[0014] In some embodiments, the energy storage power supply further includes a single-phase output interface disposed on the housing, the single-phase output interface being used to connect a single-phase load; The switching circuit further includes a single-phase output terminal, which is electrically connected to the single-phase output interface. The single-phase mains power terminal is connected to the single-phase output terminal in sequence through the third switch assembly and the second switch assembly; The controller is configured to: The on / off states of the second and third switching components are controlled to control the conduction and disconnection of the first phase line between the single-phase mains terminal and the single-phase output terminal.

[0015] In the aforementioned energy storage power supply, the single-phase output can be started simultaneously when a single-phase mains power input is received.

[0016] In some embodiments, the first phase line includes a first live wire, a neutral wire, and a ground wire between the single-phase mains terminal and the single-phase output terminal; The second switch assembly includes three second switches, and the third switch assembly includes three third switches; The first phase line is provided with a third switch and a second switch on the first live wire, neutral wire and ground wire respectively.

[0017] In the aforementioned energy storage power supply, the connection and disconnection between the single-phase mains terminal and the single-phase output terminal can be easily achieved through the joint cooperation of the second and third switches.

[0018] In some embodiments, the energy storage power supply further includes a split-phase input interface disposed on the housing, the split-phase input interface being used to connect to a split-phase power grid; The switching circuit also includes a split-phase mains terminal, which is connected to the split-phase input interface; The split-phase mains terminal is connected to the split-phase output terminal in sequence through the third switch assembly and the second switch assembly; The controller is configured to: The on / off states of the second and third switching components are controlled to control the conduction and disconnection of the first and second phase lines between the split-phase mains terminal and the split-phase output terminal.

[0019] In the aforementioned energy storage power supply, the energy storage power supply can simultaneously start phase-splitting output when the phase-splitting mains power is input.

[0020] In some embodiments, the first phase line includes a first live wire, a neutral wire, and a ground wire between the split-phase mains terminal and the split-phase output terminal, and the second phase line includes a second live wire, a neutral wire, and a ground wire between the split-phase mains terminal and the split-phase output terminal; The second switch assembly includes four second switches, and the third switch assembly includes four third switches; The first phase line is provided with a third switch and a second switch on the first live wire, neutral wire and ground wire respectively, and the second phase line is provided with a third switch and a third switch on the second live wire, neutral wire and ground wire respectively.

[0021] In the aforementioned energy storage power supply, the connection and disconnection between the split-phase mains terminal and the split-phase output terminal can be easily achieved through the joint cooperation of the second and third switches.

[0022] In some implementations, the single-phase input interface is configured to be pluggably connected to a single-phase AC outlet via a single-phase pluggable connector, the single-phase AC outlet being connected to the power grid.

[0023] In the aforementioned energy storage power supply, single-phase mains power can be easily input to the energy storage power supply.

[0024] In some embodiments, the single-phase pluggable connector includes a single-phase input line, the single-phase input line including a single-phase input connector and a single-phase output connector, the single-phase output connector being used for pluggable connection to the single-phase input interface, and the single-phase input connector being used for pluggable connection to the single-phase AC socket.

[0025] Among the aforementioned energy storage power supplies, the energy storage power supply can be flexibly adapted to single-phase mains power input, realizing "plug and play".

[0026] In some embodiments, the split-phase output interface is configured to be pluggably connected to the split-phase power receiving socket of the split-phase load via a split-phase pluggable connector.

[0027] Among the aforementioned energy storage power sources, the energy storage power source can provide split-phase power to split-phase loads.

[0028] In some embodiments, the split-phase load includes a manual transfer switch backup power device, and the split-phase power receiving socket is disposed on the body of the manual transfer switch backup power device.

[0029] Among the aforementioned energy storage power sources, the energy storage power source can provide split-phase power to the manual transfer switch backup power device.

[0030] In some embodiments, the split-phase pluggable connector includes a split-phase output line, the split-phase output line including a split-phase input connector and a split-phase output connector, the split-phase input connector being used for pluggable connection to the split-phase output interface, and the split-phase output connector being used for pluggable connection to the split-phase power receiving socket.

[0031] Among the aforementioned energy storage power supplies, the energy storage power supply can be flexibly adapted to split-phase power output, achieving "plug and play".

[0032] In some embodiments, the energy storage power supply further includes a photovoltaic input interface disposed on the housing, and the inverter further includes an MPPT module and a DC-DC converter. The MPPT module is connected to the photovoltaic input interface, and is connected to the battery module through the DC-DC converter, and is connected to the energy storage AC terminal through the DC-AC bidirectional converter. The battery module is connected to the DC-AC bidirectional converter via the DC-DC converter.

[0033] Among the aforementioned energy storage power sources, photovoltaic green electricity can be fully utilized to improve energy efficiency.

[0034] This application provides a home load backup power system, the home load backup power system comprising: The energy storage power supply described in any of the above embodiments, and; A manual transfer switch backup power device, wherein the power receiving socket of the manual transfer switch backup power device is pluggably connected to the phase-splitting output interface of the energy storage power source via a phase-splitting pluggable connector.

[0035] In some embodiments, the manual transfer switch backup power device includes a power supply selection switch, which includes a backup power supply position. The power supply selection switch is configured to default to the backup power supply position so that the energy storage power supply is connected to the manual transfer switch backup power device.

[0036] In the aforementioned household backup power system, when the mains voltage is detected to be normal, the system controls the transfer switch circuit to connect the first phase line of the single-phase mains terminal with the split-phase output terminal, so as to provide the first phase power from the mains to the split-phase output interface. At the same time, the system controls the transfer switch circuit to connect the second phase line of the energy storage AC terminal with the split-phase output terminal, and controls the DC-AC bidirectional converter to invert the DC power of the battery module into AC power, so as to provide the second phase power with a phase difference A from the first phase power to the split-phase output interface. Thus, when the energy storage power is charged using single-phase mains power, the energy storage power can be synchronously started to split-phase output, thereby expanding the use function of portable energy storage power in specific scenarios of household emergency backup power.

[0037] Additional aspects and advantages of the embodiments of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0038] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, wherein: Figure 1 This is a schematic diagram of the energy storage power supply module according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the manual transfer switch backup power device according to an embodiment of this application; Figure 3 This is a schematic diagram of the architecture of a household load backup power system according to an embodiment of this application.

[0039] Explanation of key component symbols: 10. Housing; 21. Single-phase input interface; 22. Split-phase input interface; 31. Single-phase output interface; 32. Split-phase output interface; 40. Battery module; 50. Inverter; 51. MPPT module; 52. DC-DC converter; 53. DC-AC bidirectional converter; 54. Controller; 55. Grid tracking module; 60. Transfer switch circuit; 61. Single-phase AC power terminal; 62. Energy storage AC terminal; 63. Split-phase output terminal; 64. Single-phase output terminal; 65. Split-phase AC power terminal; 70. Photovoltaic input interface; 80. Split-phase power socket; 85. Power supply selection switch; 90. Main body; 95. Energy storage power supply; 100. Photovoltaic module; 200. Manual transfer switch backup power device; 300. Split-phase power unit; 350. Split-phase load; 400. Grid; 500. Household load backup power system; 1000. Detailed Implementation

[0040] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0041] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. They can refer to a mechanical connection or an electrical connection. They can refer to a direct connection or an indirect connection through an intermediate medium, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0043] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0044] This disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described herein. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, various specific examples of processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0045] Please see Figure 1 This application provides an energy storage power supply 100, which includes a housing 10, a single-phase input interface 21 and a split-phase output interface 32 disposed on the housing 10, and a battery module 40, an inverter 50, and a transfer switch circuit 60 disposed within the housing 10. The single-phase input interface 21 is used to connect to the power grid 500, and the split-phase output interface 32 is used to connect to a split-phase load 400. The inverter 50 includes a DC-AC bidirectional converter 53 and a controller 54. The transfer switch circuit 60 includes a single-phase mains terminal 61, an energy storage AC terminal 62, and a split-phase output terminal 63. The single-phase mains terminal 61 is connected to the single-phase input interface 21, the energy storage AC terminal 62 is connected to the DC-AC bidirectional converter 53, and the split-phase output terminal 63 is connected to the split-phase output interface 32.

[0046] The controller 54 is configured to: monitor the mains voltage of the single-phase mains terminal 61; when the mains voltage is detected to be normal, control the transfer switch circuit 60 to conduct the first phase line between the single-phase mains terminal 61 and the split-phase output terminal 63 to provide the first phase power from the mains to the split-phase output interface 32; and control the transfer switch circuit 60 to conduct the second phase line between the energy storage AC terminal 62 and the split-phase output terminal 63, and control the DC-AC bidirectional converter 53 to invert the DC power of the battery module 40 into AC power to provide the second phase power to the split-phase output interface 32; wherein the phase difference A between the second phase power and the first phase power satisfies 178 degrees ≤ A ≤ 182 degrees.

[0047] In the aforementioned energy storage power supply 100, when the mains voltage is detected to be normal, the control switch circuit 60 conducts the first phase line between the single-phase mains terminal 61 and the split-phase output terminal 63 to provide the first phase power from the mains to the split-phase output interface 32. At the same time, the control switch circuit 60 conducts the second phase line between the energy storage AC terminal 62 and the split-phase output terminal 63, and controls the DC-AC bidirectional converter 53 to invert the DC power of the battery module 40 into AC power to provide the second phase power with a phase difference A from the first phase power to the split-phase output interface 32. Thus, when the energy storage power supply 100 is charged using single-phase mains power, the energy storage power supply 100 can synchronously start the split-phase output, thereby expanding the use function of the portable energy storage power supply 100 in specific scenarios of home emergency backup power.

[0048] Optionally, the energy storage power supply 100 in this application can refer to a residential energy storage power supply, which may include a home energy storage power supply or a balcony photovoltaic energy storage power supply. The outer casing 10 is a component that protects other parts of the energy storage power supply 100, preventing moisture, dust, etc., from entering the live parts and causing short circuits, or corrosion leading to open circuits. The material of the outer casing 10 includes, but is not limited to, plastic and metal (such as iron, aluminum, aluminum alloy, etc.). The shape of the outer casing 10 includes, but is not limited to, cuboids and cylinders.

[0049] Both the single-phase input interface 21 and the split-phase output interface 32 are located on the housing 10 for easy connection to external devices. The single-phase input interface 21 and the split-phase output interface 32 can be located on the same side or different sides of the housing 10. The single-phase input interface 21 is used to connect to the mains power supply, allowing the first phase of the mains power to be input to the energy storage power supply 100 when the mains power is available, charging the battery module 40 of the energy storage power supply 100 and supplying power to the split-phase load 400 via the transfer switch circuit 60. The split-phase output interface 32 is used to connect to the split-phase load 400, enabling the mains power and the energy storage power supply 100 to supply power to the split-phase load 400 via the transfer switch circuit 60. Optionally, the single-phase input interface 21 can be a male or female interface, and the split-phase output interface 32 can be a male or female interface.

[0050] The battery module 40, inverter 50, and transfer switch circuit 60 are housed within the housing 10, thus being protected by the housing 10. The battery module 40 is a component for storing and outputting electrical energy. The battery module 40 may include one or more battery cells, which can be connected in series, parallel, or a mixed connection. A mixed connection refers to multiple battery cells being connected in both series and parallel configurations. Battery cells may include, but are not limited to, lithium batteries and sodium batteries.

[0051] Inverters 50 are all connected to battery modules 40 and transfer switch circuits 60. Each inverter 50 includes a controller 54 and a DC-AC bidirectional converter 53, with the controller 54 connected to the DC-AC bidirectional converter 53. The DC-AC bidirectional converter 53 is used for bidirectional conversion between AC and DC power. In one embodiment, the DC-AC bidirectional converter 53 can convert the DC power output from the battery cells into AC power suitable for supplying power to a load. In one embodiment, the DC-AC bidirectional converter 53 can convert AC power from an external power source (such as mains power) into DC power suitable for charging the battery cells. In another embodiment, the DC-AC bidirectional converter 53 can convert DC power from an external power source (such as photovoltaic module 200) into DC power suitable for charging the battery cells.

[0052] Please combine Figure 1 The transfer switch circuit 60 includes a single-phase mains terminal 61, an energy storage AC terminal 62, and a split-phase output terminal 63. The single-phase mains terminal 61 is connected to the single-phase input interface 21, allowing the first phase of the mains power to enter the transfer switch circuit 60 when mains power is available. The energy storage AC terminal 62 is connected to the battery module 40 via a DC-AC bidirectional converter 53, allowing the DC power output from the battery module 40 to be converted to the second phase via the DC-AC bidirectional converter 53 and then enter the transfer switch circuit 60 via the energy storage AC terminal 62. The split-phase output terminal 63 is connected to the split-phase output interface 32, allowing the first and second phases of power to be output to the split-phase output interface 32, which in turn supplies power to the split-phase load 400.

[0053] The controller 54 is configured to: monitor the mains voltage of the single-phase mains terminal 61; when the mains voltage is detected to be normal, control the transfer switch circuit 60 to conduct the first phase line between the single-phase mains terminal 61 and the split-phase output terminal 63, so that the first phase power input by the single-phase input interface 21 is output to the split-phase output interface 32 through the single-phase mains terminal 61 and the split-phase output terminal 63 in sequence; and control the transfer switch circuit 60 to conduct the second phase line between the energy storage AC terminal 62 and the split-phase output terminal 63, and control the bidirectional DC / AC converter 53 to invert the DC power of the battery module 40 into AC power, so that the DC power output by the battery module 40 can be converted into the second phase power through the bidirectional DC / AC converter 53, and output to the split-phase output interface 32 through the energy storage AC terminal 62 and the split-phase output terminal 63 in sequence, wherein the phase difference A between the second phase power and the first phase power satisfies 178 degrees ≤ A ≤ 182 degrees. Therefore, the first and second phases can be converted into split-phase power suitable for the operation of the split-phase load 400 through the split-phase output port 63. That is, when the single-phase mains power is connected to the energy storage power supply 100 and the mains voltage is normal, the energy storage power supply 100 can realize synchronous start-up of split-phase output. Thus, in the specific scenario of home emergency backup power, the energy storage power supply 100 can be directly connected to the grid 500 and the split-phase load 400 respectively, so that the grid 500 and the energy storage power supply 100 jointly supply power to the split-phase load 400, meeting the power supply needs of high-power split-phase loads 400 in home electricity use in North America and other regions, thereby expanding the use function of the portable energy storage power supply 100 in the specific scenario of home emergency backup power.

[0054] The phase difference A between the second phase and the first phase satisfies 178 degrees ≤ A ≤ 182 degrees. In some examples, A = 178 degrees, 178.4 degrees, 178.8 degrees, 179 degrees, 179.2 degrees, 179.6 degrees, 180 degrees, 180.4 degrees, 180.8 degrees, 181.2 degrees, 181.6 degrees, 182 degrees, or other values ​​greater than or equal to 178 degrees and less than or equal to 182 degrees. In the embodiment of this application, the phase difference A between the second phase and the first phase is 180 degrees, so the split-phase power converted by the split-phase output interface 32 is more compatible with split-phase power distribution standards, such as 120V / 240V split-phase systems, meeting the power supply requirements of a split-phase load of 400, and the power supply is more stable.

[0055] Optionally, the single-phase mains terminal 61 and the single-phase output interface 31, the energy storage AC terminal 62 and the DC-AC bidirectional converter 53, and the split-phase output terminal 63 and the split-phase output interface 32 can be connected by wires and / or connectors.

[0056] In some implementations, the inverter 50 further includes a grid tracking module 55, the controller 54 is connected to the grid tracking module 55, and the grid tracking module 55 is connected to the single-phase input interface 21; The grid tracking module 55 is used to acquire the voltage phase of the single-phase mains terminal 61; The controller 54 is used to control the phase difference A between the voltage output of the DC-AC bidirectional converter 53 and the voltage of the single-phase mains terminal 61 according to the voltage phase of the single-phase mains terminal 61, so that A satisfies 178 degrees ≤ A ≤ 182 degrees.

[0057] In this way, the energy storage power supply 100 can track the mains voltage, enabling the energy storage power supply 100 and the mains power to jointly supply power to the split-phase load 400.

[0058] Specifically, in Figure 1 In this implementation, the grid tracking module 55 is connected to both the controller 54 and the single-phase input interface 21, thereby enabling the tracking of the AC power at the single-phase mains terminal 61. When the mains voltage is detected to be normal and the split-phase output interface 32 is connected to the split-phase load 400, the controller can control the transfer switch circuit 60 to conduct the first phase line between the single-phase mains terminal 61 and the split-phase output terminal 63, and to conduct the second phase line between the energy storage AC terminal 62 and the split-phase output terminal 63. This ensures that both the single-phase mains terminal 61 and the energy storage AC terminal 62 are connected to the split-phase output terminal 63 on the electrically connected lines. The controller 54 can then track the single-phase mains voltage detected by the grid tracking module 55. The voltage phase of terminal 61 controls the phase difference A between the voltage output of DC-AC bidirectional converter 53 and the voltage of single-phase mains terminal 61 to satisfy 178 degrees ≤ A ≤ 182 degrees. That is, the phase difference A between the first phase power provided by single-phase mains terminal 61 to split-phase output terminal 63 and the second phase power provided by energy storage AC terminal 62 to split-phase output terminal 63 satisfies 178 degrees ≤ A ≤ 182 degrees, thereby enabling the mains power and energy storage power supply 100 to jointly supply power to split-phase load 400 using the above-mentioned electrical connection lines.

[0059] In some embodiments, the switching circuit 60 includes a first switching component K1, a second switching component K2 and a third switching component K3, and the single-phase mains terminal 61 is connected to the split-phase output terminal 63 in sequence through the third switching component K3 and the second switching component K2. The energy storage AC terminal 62 is connected to the split-phase output terminal 63 in sequence through the first switch assembly K3 and the second switch assembly K2; Controller 54 is configured as follows: Control the on / off states of the second switch assembly K2 and the third switch assembly K3 to control the conduction and disconnection of the first phase line between the single-phase mains terminal 61 and the split-phase output terminal 63; The on / off states of the first switch assembly K1 and the second switch assembly K2 are controlled to control the conduction and disconnection of the second phase line between the energy storage AC terminal 62 and the split-phase output terminal 63.

[0060] Thus, through the joint cooperation of the first switch assembly K1, the second switch assembly K2, and the third switch assembly K3, it is easy to realize the connection and disconnection of the first phase line and the second phase line between different terminals.

[0061] Thus, through the joint cooperation of the first switch assembly K1, the second switch assembly K2, and the third switch assembly K3, it is easy to achieve conduction and disconnection between different terminals.

[0062] Specifically, please combine Figure 1 The controller 54 can be connected to the first switch assembly K1, the second switch assembly K2 and the third switch assembly K3 to control the on / off state of the first switch assembly K1, the second switch assembly K2 and the third switch assembly K3.

[0063] The single-phase mains terminal 61 is connected to the split-phase output terminal 63 via a third switch assembly K3 and a second switch assembly K2. Therefore, the controller 54 can control the on / off states of the third switch assembly K3 and the second switch assembly K2 to control the conduction and disconnection of the first phase line between the single-phase mains terminal 61 and the split-phase output terminal 63. In one embodiment, the controller 54 controls the on / off states of the second switch assembly K2 and the third switch assembly K3 to control the conduction of the first phase line between the single-phase mains terminal 61 and the split-phase output terminal 63, thereby allowing the single-phase mains terminal 61 to supply the first phase power to the split-phase output terminal 63. In another embodiment, the controller 54 controls the on / off states of the second switch assembly K2 and the third switch assembly K3 to control the disconnection of the first phase line between the single-phase mains terminal 61 and the split-phase output terminal 63, thereby stopping the single-phase mains terminal 61 from supplying the first phase power to the split-phase output terminal 63.

[0064] The energy storage AC terminal 62 is connected to the split-phase output terminal 63 sequentially via a first switching assembly K1 and a second switching assembly K2. Therefore, the controller 54 can control the on / off states of the first switching assembly K1 and the second switching assembly K2 to control the conduction and disconnection of the second-phase line between the energy storage AC terminal 62 and the split-phase output terminal 63. In one embodiment, the controller 54 controls the on / off states of the first switching assembly K1 and the second switching assembly K2 to control the conduction of the second-phase line between the energy storage AC terminal 62 and the split-phase output terminal 63, thereby allowing the energy storage AC terminal 62 to supply second-phase power to the split-phase output terminal 63. In another embodiment, the controller 54 controls the on / off states of the first switching assembly K1 and the second switching assembly K2 to control the disconnection of the second-phase line between the energy storage AC terminal 62 and the split-phase output terminal 63, thereby stopping the energy storage AC terminal 62 from supplying second-phase power to the split-phase output terminal 63.

[0065] In summary, the controller 54 can control the connection and disconnection of the first phase line and the second phase line between different terminals by controlling the on / off states of the first switch assembly K1, the second switch assembly K2, and the third switch assembly K3. Optionally, each switch assembly may include one or more switches. Switches may include, but are not limited to, relays.

[0066] In some implementations, the first phase line includes a first live wire L1, a neutral wire N, and a ground wire PE between the single-phase mains terminal 61 and the split-phase output terminal 63, and the second phase line includes a second live wire L2, a neutral wire N, and a ground wire PE between the energy storage AC terminal 62 and the split-phase output terminal 63. The first switch assembly K1 includes three first switches, the second switch assembly K2 includes four second switches, and the third switch assembly K3 includes three third switches. A third switch and a second switch are respectively installed on the first live wire L1, neutral wire N and ground wire PE of the first phase circuit, and the second live wire L2, neutral wire N and ground wire PE of the second phase circuit.

[0067] Thus, through the joint cooperation of the first switch, the second switch and the third switch, the energy storage power supply 100 can simultaneously start split-phase output when a single-phase mains power input is received.

[0068] Specifically, please combine Figure 1 The first switch assembly K1 includes three first switches, namely switches K12, K13 and K14; the second switch assembly K2 includes four second switches, namely switches K21, K22, K23 and K24; the third switch assembly K3 includes three third switches, namely switches K31, K32 and K33.

[0069] The first phase circuit has switches K31 and K24 on the first live wire L1, switches K32 and K23 on the neutral wire N, and switches K33 and K22 on the ground wire PE. Therefore, the controller 54 can control the closing and opening of switches K31 and K24 to control the conduction and disconnection of the first live wire L1, control the closing and opening of switches K32 and K23 to control the conduction and disconnection of the neutral wire N, and control the closing and opening of switches K33 and K22 to control the conduction and disconnection of the ground wire PE.

[0070] Switches K14 and K21 are installed on the second live wire L2 of the second phase circuit, switches K12 and K23 are installed on the neutral wire N of the second phase circuit, and switches K13 and K22 are installed on the ground wire PE of the second phase circuit. Therefore, the controller 54 can control the closing and opening of switches K14 and K21 to control the conduction and disconnection of the second live wire L2 of the second phase circuit, control the closing and opening of switches K12 and K23 to control the conduction and disconnection of the neutral wire N of the second phase circuit, and control the closing and opening of switches K13 and K22 to control the conduction and disconnection of the ground wire PE of the second phase circuit.

[0071] In one implementation, please refer to Figure 1 The controller 54 is configured to: when the mains voltage is detected to be normal, close control switches K31 and K24 to conduct the first live wire L1 of the first phase line, close control switches K14 and K21 to conduct the second live wire L2 of the second phase line, close control switches K32, K23, and K12 to conduct the neutral wire N of the first phase line and the neutral wire N of the second phase line, and close control switches K33, K22, and K13 to conduct the ground wire PE of the first phase line and the ground wire PE of the second phase line. This allows the single-phase mains terminal 61 to supply the first phase power to the split-phase output terminal 63, and the energy storage AC terminal 62 to supply the second phase power to the split-phase output terminal 63. The first phase power and the second phase power can be converted into split-phase power suitable for the operation of the split-phase load 400 through the split-phase output interface 32. Therefore, the energy storage power supply 100 can synchronously start the split-phase output when the single-phase mains input is used.

[0072] In some embodiments, the energy storage power supply 100 further includes a single-phase output interface 31 disposed on the housing 10, the single-phase output interface 31 being used to connect a single-phase load; The changeover switch circuit 60 also includes a single-phase output terminal 64, which is electrically connected to the single-phase output interface 31. The single-phase mains power terminal 61 is connected to the single-phase output terminal 64 via the third switch assembly K3 and the second switch assembly K2 in sequence; Controller 54 is configured as follows: The on / off states of the second switch assembly K2 and the third switch assembly K3 are controlled to control the conduction and disconnection of the first phase line between the single-phase mains terminal 61 and the single-phase output terminal 64.

[0073] In this way, the energy storage power supply 100 can simultaneously start single-phase output when a single-phase mains power input is received.

[0074] Specifically, the single-phase mains terminal 61 is connected to the single-phase output terminal 64 sequentially via a third switch assembly K3 and a second switch assembly K2. Therefore, the controller 54 can control the on / off states of the third switch assembly K3 and the second switch assembly K2 to control the conduction and disconnection of the first phase line between the single-phase mains terminal 61 and the single-phase output terminal 64. In one embodiment, the controller 54 controls the on / off states of the second switch assembly K2 and the third switch assembly K3 to control the conduction of the first phase line between the single-phase mains terminal 61 and the single-phase output terminal 64, thereby allowing the single-phase mains terminal 61 to supply single-phase power to the single-phase output terminal 64. In another embodiment, the controller 54 controls the on / off states of the second switch assembly K2 and the third switch assembly K3 to control the disconnection of the first phase line between the single-phase mains terminal 61 and the single-phase output terminal 64, thereby stopping the single-phase mains terminal 61 from supplying single-phase power to the single-phase output terminal 64.

[0075] In some implementations, the first phase line includes a first live wire, a neutral wire, and a ground wire between the single-phase mains terminal 65 and the single-phase output terminal 63; The second switch assembly K2 includes three second switches, and the third switch assembly K3 includes three third switches; A third switch and a second switch are respectively installed on the first live wire L1, the neutral wire N, and the ground wire PE of the first phase circuit.

[0076] Thus, through the joint cooperation of the second and third switches, the energy storage power supply 100 can simultaneously start single-phase output when a single-phase mains power input is received.

[0077] Specifically, please combine Figure 1 The second switch assembly K2 includes three second switches, namely switches K22, K23 and K24; the third switch assembly K3 includes three third switches, namely switches K31, K32 and K33.

[0078] The first phase circuit has switches K31 and K24 on the first live wire L1, switches K32 and K23 on the neutral wire N, and switches K33 and K22 on the ground wire PE. Therefore, the controller 54 can control the closing and opening of switches K31 and K24 to control the conduction and disconnection of the first live wire L1, control the closing and opening of switches K32 and K23 to control the conduction and disconnection of the neutral wire N, and control the closing and opening of switches K33 and K22 to control the conduction and disconnection of the ground wire PE.

[0079] In one embodiment, when single-phase mains power is available, the controller 54 is configured to: close control switches K31 and K24 to conduct the first live wire L1 of the first phase line, and close and open control switches K32 and K23 to conduct the neutral wire N of the first phase line, and close control switches K33 and K22 to conduct the ground wire PE of the first phase line. This allows the single-phase mains terminal 61 to provide single-phase power to the single-phase output terminal 63. The single-phase power is output to the single-phase load through the single-phase output interface 31. Therefore, the energy storage power supply 100 can synchronously start single-phase output when single-phase mains power is input.

[0080] In some embodiments, the energy storage power supply 100 further includes a split-phase input interface 22 disposed on the housing 10, the split-phase input interface 22 being used to connect to the power grid 500; The switching circuit 60 also includes a split-phase mains terminal 65, which is electrically connected to the split-phase input interface 22; The split-phase mains terminal 65 is connected to the split-phase output terminal 63 via the third switch assembly K3 and the second switch assembly K2 in sequence; Controller 54 is configured as follows: Control the on / off state of the second switch assembly K2 and the third switch assembly K3 to control the conduction of the first phase line and the second phase line between the split-phase mains terminal 65 and the split-phase output terminal 63.

[0081] In this way, the energy storage power supply 100 can simultaneously start split-phase output when split-phase mains power is input.

[0082] Specifically, the split-phase mains terminal 65 is connected to the split-phase output terminal 63 sequentially via a third switch assembly K3 and a second switch assembly K2. Therefore, the controller 54 can control the on / off states of the third switch assembly K3 and the second switch assembly K2 to control the conduction and disconnection of the first and second phase lines between the split-phase mains terminal 65 and the split-phase output terminal 63. In one embodiment, the controller 54 controls the on / off states of the second switch assembly K2 and the third switch assembly K3 to control the conduction of the first and second phase lines between the split-phase mains terminal 65 and the split-phase output terminal 63, thereby allowing the single split-phase mains terminal 65 to supply split-phase power to the split-phase output terminal 63. In another embodiment, the controller 54 controls the on / off states of the second switch assembly K2 and the third switch assembly K3 to control the disconnection of the first and second phase lines between the split-phase mains terminal 65 and the split-phase output terminal 63, thereby stopping the split-phase mains terminal 65 from supplying split-phase power to the split-phase output terminal 63.

[0083] In some embodiments, the first phase line includes a first live wire, a neutral wire, and a ground wire between the split-phase mains terminal 65 and the split-phase output terminal 63, and the second phase line includes a second live wire, a neutral wire, and a ground wire between the split-phase mains terminal 65 and the split-phase output terminal 63. The second switch assembly K2 includes four second switches, and the third switch assembly K3 includes four third switches; A third switch and a second switch are respectively provided on the first live wire L1, neutral wire N and ground wire PE of the first phase circuit, and a third switch and a third switch are respectively provided on the second live wire L2, neutral wire N and ground wire PE of the second phase circuit.

[0084] In the aforementioned energy storage power supply, the connection and disconnection between the split-phase mains terminal 65 and the split-phase output terminal 63 can be easily achieved through the joint cooperation of the second and third switches.

[0085] Specifically, please combine Figure 1 The second switch assembly K2 includes four second switches, namely switches K21, K22, K23 and K24; the third switch assembly K3 includes four third switches, namely switches K31, K32, K33 and K34.

[0086] The first phase circuit has switches K31 and K24 on the first live wire L1, switches K32 and K23 on the neutral wire N, and switches K33 and K22 on the ground wire PE. Therefore, the controller 54 can control the closing and opening of switches K31 and K24 to control the conduction and disconnection of the first live wire L1, control the closing and opening of switches K32 and K23 to control the conduction and disconnection of the neutral wire N, and control the closing and opening of switches K33 and K22 to control the conduction and disconnection of the ground wire PE.

[0087] Switches K14 and K21 are installed on the second live wire L2 of the second phase circuit, switches K12 and K23 are installed on the neutral wire N of the second phase circuit, and switches K13 and K22 are installed on the ground wire PE of the second phase circuit. Therefore, the controller 54 can control the closing and opening of switches K14 and K21 to control the conduction and disconnection of the second live wire L2 of the second phase circuit, control the closing and opening of switches K12 and K23 to control the conduction and disconnection of the neutral wire N of the second phase circuit, and control the closing and opening of switches K13 and K22 to control the conduction and disconnection of the ground wire PE of the second phase circuit.

[0088] In one embodiment, when the split-phase mains power is available, the controller 54 is configured to: close control switches K31 and K24 to conduct the first live wire L1 of the first phase line, close control switches K34 and K21 to conduct the second live wire L2 of the second phase line, close and open control switches K32 and K23 to conduct the neutral wire N of the first phase line and the neutral wire N of the second phase line, and close control switches K33 and K22 to conduct the ground wire PE of the first phase line and the ground wire PE of the second phase line. This allows the split-phase mains terminal 65 to provide split-phase power to the split-phase output terminal 63. The split-phase power is output to the split-phase load 400 via the split-phase output interface 32. Therefore, the split-phase output can be started synchronously when the energy storage power supply 100 is input with split-phase mains power.

[0089] In some implementations, the single-phase input interface 21 is configured to be pluggably connected to a single-phase AC outlet via a single-phase pluggable connector, the single-phase AC outlet being connected to the power grid 500.

[0090] In this way, single-phase mains power can be easily input into the energy storage power supply 100.

[0091] Specifically, one end of the single-phase pluggable connector is connected to the single-phase input interface 21, and the other end is connected to the single-phase mains socket, so that the single-phase mains power output from the grid 500 can be output to the single-phase mains terminal 61 of the transfer switch circuit 60 in sequence through the single-phase mains socket, the single-phase pluggable connector, and the single-phase input interface 21. The standardized cable connection simplifies the complexity of on-site wiring and realizes the input of single-phase mains power to the energy storage power supply 100.

[0092] In some embodiments, the single-phase pluggable connector includes a single-phase input line, which includes a single-phase input connector and a single-phase output connector. The single-phase output connector is used for pluggable connection to the single-phase input interface 21, and the single-phase input connector is used for pluggable connection to a single-phase AC outlet.

[0093] In this way, the energy storage power supply 100 can be flexibly adapted to single-phase mains power input, realizing "plug and play".

[0094] Specifically, when all single-phase pluggable connectors are connected to the single-phase mains socket and the single-phase input interface 21, the first live wire of the single-phase input line is connected to the first live wire end in the single-phase mains socket and the first live wire end in the single-phase input interface 21, the neutral wire of the single-phase input line is connected to the neutral wire end in the single-phase mains socket and the neutral wire end in the single-phase input interface 21, and the ground wire of the single-phase input line is connected to the ground wire end in the single-phase mains socket and the ground wire end in the single-phase input interface 21, thereby enabling single-phase mains power input to the energy storage power supply 100.

[0095] Because the energy storage power supply 100 can be plugged into the grid 500 through the pluggable connection between the single-phase output connector and the single-phase input interface 21, and the pluggable connection between the single-phase input connector and the single-phase mains socket, it can achieve "plug and play", which is convenient for installation, maintenance and replacement. Users can install it themselves, and it is also convenient for users to move the energy storage power supply 100 to other places where electricity is needed, which helps to meet more user needs.

[0096] In some implementations, the split-phase output interface 32 is configured to be pluggably connected to the split-phase power receiving socket of the split-phase load 400 via a split-phase pluggable connector.

[0097] In this way, the energy storage power supply 100 can provide split-phase power to the split-phase load 400.

[0098] Specifically, one end of the split-phase pluggable connector is connected to the split-phase output interface 32, and the other end is connected to the split-phase power receiving socket 80 (Generator Inlet Box) of the split-phase load 400, so that the split-phase power output from the split-phase output interface 32 can be output to the split-phase power receiving socket 80. Through standardized cable connection, the complexity of field wiring is simplified, and the split-phase power provided by the energy storage power supply 100 is input to the split-phase load 400.

[0099] In some embodiments, the split-phase load 400 includes a manual transfer switch backup power device 300, with the split-phase power receiving socket disposed on the body 95 of the manual transfer switch backup power device 300.

[0100] In this way, the energy storage power supply 100 can provide split-phase power to the manual transfer switch backup power device 300.

[0101] Specifically, the Manual Transfer Switch (MTS) backup power unit 300 can be used for power distribution, protection, and switching. One end of the split-phase pluggable connector is connected to the split-phase output interface 32, and the other end is connected to the split-phase receiving socket 80 of the Manual Transfer Switch backup power unit 300, so that the split-phase power output from the split-phase output interface 32 can be output to the Manual Transfer Switch backup power unit 300. The standardized cable connection simplifies the complexity of field wiring and realizes the input of split-phase power provided by the energy storage power source 100 to the Manual Transfer Switch backup power unit 300.

[0102] Please combine Figure 2The manual switch backup power device 300 also includes a main body 95 and a power supply interface 85, both of which are located on the main body 95. The split-phase load 400 also includes a split-phase power consumption unit 350, which can be plugged into and connected to the power supply interface 85 via a cable or connector. Therefore, the split-phase power output from the split-phase output interface 32 can be sequentially input to the split-phase power consumption unit through the split-phase power supply interface 80 and the power supply interface 85, thereby enabling the energy storage power supply 100 to supply power to the split-phase power consumption unit 350.

[0103] In some embodiments, the split-phase pluggable connector includes a split-phase output line, which includes a split-phase input connector and a split-phase output connector. The split-phase input connector is used for pluggable connection to the split-phase output interface 32, and the split-phase output connector is used for pluggable connection to the split-phase power receiving socket 80.

[0104] In this way, the energy storage power supply 100 can be flexibly adapted to split-phase power output, achieving "plug and play".

[0105] Specifically, when all the phase-splitting pluggable connectors are connected to the phase-splitting power receiving socket 80 and the phase-splitting output interface 32, the first live wire of the phase-splitting output line is connected to the first live wire end in the phase-splitting power receiving socket 80 and the first live wire end in the phase-splitting output interface 32, the second live wire of the phase-splitting output line is connected to the second live wire end in the phase-splitting power receiving socket 80 and the second live wire end in the phase-splitting output interface 32, the neutral wire of the phase-splitting output line is connected to the neutral wire end in the phase-splitting power receiving socket 80 and the neutral wire end in the phase-splitting output interface 32, and the ground wire of the phase-splitting output line is connected to the ground wire end in the phase-splitting power receiving socket 80 and the ground wire end in the phase-splitting output interface 32, thereby enabling the energy storage power supply 100 to provide phase-splitting power to the phase-splitting load 400.

[0106] Because the energy storage power supply 100 and the split-phase load 400 can be plugged and plugged through the pluggable connection between the split-phase input connector and the split-phase output interface 32, and the pluggable connection between the split-phase output connector and the split-phase power receiving socket 80, "plug and play" can be achieved, which is convenient for installation, maintenance and replacement. Users can install it themselves, and it is also convenient for users to move the energy storage power supply 100 to other places where electricity is needed, which helps to meet more user needs.

[0107] In some embodiments, the energy storage power supply 100 also includes a photovoltaic input interface 70 disposed on the housing 10, and the inverter 50 also includes an MPPT module 51 and a DC converter 52. The MPPT module 51 is connected to the photovoltaic input interface 70, and is connected to the battery module 40 through the DC converter 52, and is connected to the energy storage AC terminal 62 through the DC-AC bidirectional converter 53. The battery module 40 is connected to the DC-AC bidirectional converter 53 via the DC-DC converter 52.

[0108] In this way, we can make full use of photovoltaic green electricity and improve energy efficiency.

[0109] Specifically, the photovoltaic input interface 70 is located on the housing 10, allowing for easy connection to the photovoltaic module 200 via a cable. Optionally, the photovoltaic input interface 70 may include a male or female interface.

[0110] The MPPT module 51 is a Maximum Power Point Tracking (MPPT) module, a core module in the photovoltaic power generation system. Through real-time tracking and adjustment, the MPPT module 51 ensures that the photovoltaic module 200 always operates near its maximum power point (MPP), thereby maximizing the system's power generation efficiency and energy utilization. The MPPT module 51 is built into the housing 10, thus being protected from short circuits and leakage. The MPPT module 51 connects to the photovoltaic input interface 70, performing maximum power point tracking on the DC power from the photovoltaic module 200 through the photovoltaic input interface 70, improving the power generation efficiency and energy utilization of the photovoltaic module 200. The DC power output from the photovoltaic module 200 can be transmitted via the MPPT module 51 to the DC-DC converter 52 and the DC-AC bidirectional converter 53.

[0111] Both the DC-DC converter 52 and the DC-AC bidirectional converter 53 are built into the housing 10, thus being protected by the housing 10 to prevent short circuits and leakage. The DC-DC converter 52 is connected to the MPPT module 51 and the battery module 40, performing voltage conversion and regulation on the DC power after maximum power point tracking, and outputting a suitable charging voltage and current to the battery module 40, enabling the battery module 40 to store the electrical energy output by the photovoltaic module 200. The MPPT module 51 is connected to the energy storage AC terminal 62 via the DC-AC bidirectional converter 53, allowing the electrical energy output by the photovoltaic module 200 to provide a second phase of power to the split-phase load 400 through the split-phase output interface 32.

[0112] Please see Figures 1 to 3 This application provides a home load backup power system 1000, which includes: The energy storage power supply 100 of any of the above embodiments, and; The manual transfer switch backup power device 300 has a split-phase power receiving socket 80 that is pluggably connected to the split-phase output interface 32 of the energy storage power supply 100 via a split-phase pluggable connector.

[0113] Specifically, the manual transfer switch backup power device 300 can be used for power distribution, protection, and switching. Optionally, in one embodiment, the phase-splitting power receiving socket 80 is pluggably connected to the phase-splitting output interface 32 via a phase-splitting pluggable connector. One end of the phase-splitting pluggable connector is connected to the phase-splitting output interface 32, and the other end is connected to the phase-splitting power receiving socket 80 of the manual transfer switch backup power device 300, so that the phase-splitting power output from the phase-splitting output interface 32 can be output to the manual transfer switch backup power device 300. Please refer to... Figure 2 The manual switch backup power device 300 also includes a main body 95 and a power supply interface 85, both of which are located on the main body 95. Please refer to... Figure 3 The split-phase load 400 also includes a split-phase power consumption unit 350, which can be plugged into and disconnected from the power supply interface 85 via cables, connectors, sockets, etc. Therefore, the split-phase power output from the split-phase output interface 32 can be sequentially input to the split-phase power consumption unit 350 through the split-phase power receiving socket 80 and the power supply interface 85, thereby enabling the energy storage power supply 100 to supply power to the split-phase power consumption unit 350.

[0114] In one embodiment, the split-phase receiving socket 80 can be directly and pluggably connected to the split-phase output interface 32.

[0115] In some embodiments, the manual transfer switch backup power device 300 includes a power selection switch 90, which includes a backup power supply position. The power selection switch 90 is configured to default to the backup power supply position so that the energy storage power supply 100 is connected to the manual transfer switch backup power device 300.

[0116] Specifically, please combine Figure 2 The power selection switch 90 includes a backup power supply position (GEN), a grid position (LINE), and an OFF position. When the power selection switch 90 is in the backup power supply position by default, connecting the energy storage power supply 100 to the manual transfer switch backup power device 300, the energy storage power supply 100 can directly detect whether the grid 500 has power. When the energy storage power supply 100 detects that the grid 500 has power, it switches to grid-connected mode, allowing the AC mains power output from the grid 500 to be input to the manual transfer switch backup power device 300, thereby powering the user unit. When the energy storage power supply 100 detects that the grid 500 has lost power, it switches to off-grid mode, allowing the DC power output from the battery module 40 within the energy storage power supply 100 to be converted to AC power by the inverter 50, and the AC power to be input to the manual transfer switch backup power device 300, thereby powering the user unit. Therefore, it can achieve automatic switching between grid-connected and off-grid states at the millisecond level, without requiring users to manually select the power supply selection switch 90 degrees, thus achieving seamless power supply switching and ensuring critical household power supply to a certain extent.

[0117] It should be noted that the above explanation of the implementation method and beneficial effects of the energy storage power supply 100 also applies to the household load backup power system 1000 of the embodiments of this application. To avoid redundancy, it will not be elaborated in detail here.

[0118] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0119] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. An energy storage power supply, characterized by, The utility model relates to a single-phase input interface and split-phase output interface are arranged on the shell, and the battery module, inverter and conversion switch circuit are arranged in the shell, and the single-phase input interface is used for connecting the power grid, and the split-phase output interface is used for connecting the split-phase load, and the inverter includes the direct current alternating current two-way converter and the controller, and the conversion switch circuit includes the single-phase mains end, the energy storage alternating current end and the split-phase output end, wherein the single-phase mains end is connected with the single-phase input interface, the energy storage alternating current end is connected with the direct current alternating current two-way converter, and the split-phase output end is connected with the split-phase output interface, and the controller is configured to monitor the mains voltage of the single-phase mains end, when monitoring that the mains voltage is normal, controlling the conversion switch circuit and conducting the first phase line between the single-phase mains end and the split-phase output end to provide the first phase electricity from the mains for the split-phase output interface, and controlling the conversion switch circuit and conducting the second phase line between the energy storage alternating current end and the split-phase output end, and controlling the direct current alternating current two-way converter and inverting the direct current of the battery module into alternating current to provide the second phase electricity for the split-phase output interface, wherein the phase difference A between the second phase electricity and the first phase electricity satisfies 178 degrees <= A <= 182 degrees. The inverter further includes a power grid tracking module, and the controller is connected with the power grid tracking module, and the power grid tracking module is connected with the single-phase input interface, and the power grid tracking module is used for obtaining the voltage phase of the single-phase mains end, and the controller is used for controlling the phase difference A between the voltage of the direct current alternating current two-way converter output and the voltage of the single-phase mains end to satisfy 178 degrees <= A <= 182 degrees according to the voltage phase of the single-phase mains end. The conversion switch circuit includes a first switch assembly, a second switch assembly and a third switch assembly, the single-phase mains end is connected with the energy storage alternating current end through the third switch assembly and the first switch assembly in turn, and is connected with the split-phase output end through the third switch assembly and the second switch assembly in turn, the energy storage alternating current end is connected with the split-phase output end through the first switch assembly and the second switch assembly in turn, the controller is configured to control the on-off state of the second switch assembly and the third switch assembly to control the conduction and disconnection of the first phase line between the single-phase mains end and the split-phase output end, and control the on-off state of the first switch assembly and the second switch assembly to control the conduction and disconnection of the second phase line between the energy storage alternating current end and the split-phase output end. The first phase line includes the first fire line, zero line and ground line between the single-phase mains end and the split-phase output end, and the second phase line includes the second fire line, zero line and ground line between the energy storage alternating current end and the split-phase output end, the first switch assembly includes three first switches, the second switch assembly includes four second switches, and the third switch assembly includes three third switches. ​ ​ ​ ​ ​ ​ ​ ​ ​ 2. The energy storage power supply of claim 1, wherein, ​ ​ ​ 3. The energy storage power supply of claim 1, wherein, ​ ​ ​ ​ ​ 4. The energy storage power supply of claim 3, wherein, ​ ​ The first fire wire, zero wire and ground wire of the first phase line are respectively provided with one third switch and one second switch, and the second fire wire, zero wire and ground wire of the second phase line are respectively provided with one first switch and one second switch.

5. The energy storage power supply of claim 3, wherein, The energy storage power supply further comprises a single-phase output interface arranged on the shell, and the single-phase output interface is used for connecting a single-phase load. The conversion switch circuit further comprises a single-phase output end, and the single-phase output end is electrically connected with the single-phase output interface. The single-phase power end is connected with the single-phase output end through the third switch assembly and the second switch assembly in sequence. The controller is configured to: control the on-off state of the second switch assembly and the third switch assembly to control the conduction and disconnection of the first phase line between the single-phase power end and the single-phase output end.

6. The energy storage power supply of claim 5, wherein, The first phase line comprises a first fire wire, a zero wire and a ground wire between the single-phase power end and the single-phase output end. The second switch assembly comprises three second switches, and the third switch assembly comprises three third switches. The first fire wire, zero wire and ground wire of the first phase line are respectively provided with one third switch and one second switch.

7. The energy storage power supply of claim 3, wherein, The energy storage power supply further comprises a split-phase input interface arranged on the shell, and the split-phase input interface is used for connecting a split-phase power grid. The conversion switch circuit further comprises a split-phase power end, and the split-phase power end is connected with the split-phase input interface. The split-phase power end is connected with the split-phase output end through the third switch assembly and the second switch assembly in sequence. The controller is configured to: control the on-off state of the second switch assembly and the third switch assembly to control the conduction and disconnection of the first phase line and the second phase line between the split-phase power end and the split-phase output end.

8. The energy storage power supply of claim 7, wherein, The first phase line comprises a first fire wire, a zero wire and a ground wire between the split-phase power end and the split-phase output end, and the second phase line comprises a second fire wire, a zero wire and a ground wire between the split-phase power end and the split-phase output end. The second switch assembly comprises four second switches, and the third switch assembly comprises four third switches. The first fire wire, zero wire and ground wire of the first phase line are respectively provided with one third switch and one second switch, and the second fire wire, zero wire and ground wire of the second phase line are respectively provided with one third switch and one third switch.

9. The energy storage power supply of claim 1, wherein, The single-phase input interface is used for pluggable connection with a single-phase power socket through a single-phase pluggable connector, and the single-phase power socket is connected with the power grid.

10. The energy storage power supply of claim 9, wherein, The single-phase pluggable connector comprises a single-phase input line, and the single-phase input line comprises a single-phase input joint and a single-phase output joint.

11. The energy storage power source of claim 1, wherein, The split-phase output interface is used for pluggable connection with a split-phase power receptacle of the split-phase load through a split-phase pluggable connector.

12. The energy storage power source of claim 11, wherein, The split-phase load comprises a manual switch backup power device, and the split-phase power receptacle is arranged on a main body of the manual switch backup power device.

13. The energy storage power supply of claim 11 or 12, wherein, The split-phase pluggable connector includes a split-phase output line, the split-phase output line includes a split-phase input joint and a split-phase output joint, the split-phase input joint is used for pluggable connection with the split-phase output interface, and the split-phase output joint is used for pluggable connection with the split-phase power socket.

14. The energy storage power source of claim 1, wherein, The energy storage power supply further comprises a photovoltaic input interface arranged on the shell, the inverter further comprises an MPPT module and a DC converter, the MPPT module is connected with the photovoltaic input interface, and is connected with the battery module through the DC converter and is connected with the energy storage AC end through the DC-AC bidirectional converter. The battery module is connected with the DC-AC bidirectional converter through the DC converter.

15. A home load backup power system, comprising: Comprise: The energy storage power supply of any one of claims 1-14, and; The manual transfer switch backup power supply device, the power socket of the manual transfer switch backup power supply device is pluggable connected with the split-phase output interface of the energy storage power supply through the split-phase pluggable connector.

16. The home load standby power system of claim 15, wherein, The manual transfer switch backup power supply device includes a power supply selection switch, the power supply selection switch includes a backup power supply power supply gear, and the power supply selection switch is configured to be in the backup power supply power supply gear by default to connect the energy storage power supply with the manual transfer switch backup power supply device.

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