Energy storage power supply

Abstract

The invention discloses an energy storage power supply, which comprises a shell, an alternating current input interface, an alternating current output interface, a battery pack, an inversion module, an automatic change-over switch module, a multi-path load switch control module and a system control panel, and is characterized in that the automatic change-over switch module comprises a first change-over switch and a second change-over switch; the multi-path load switch control module comprises a plurality of load branches which are connected in parallel, each load branch is connected with a switch element used for controlling the load branch to be connected and disconnected in series, and the first ends of the load branches are jointly connected to the second end of the second change-over switch. The system control panel is configured to control the automatic change-over switch module to be switched between a first state and a second state; wherein in the first state, the first change-over switch and the second change-over switch are closed; and in the second state, the first change-over switch is switched off, and the second change-over switch is switched on. According to the energy storage power supply, the power utilization safety can be greatly improved.

Description

Technical Field

[0001] This application relates to the field of energy storage equipment technology, and more specifically, to an energy storage power source. Background Technology

[0002] With the rapid evolution of new energy technologies and the increasing demand for outdoor living and emergency power, portable energy storage power supplies, with their flexible mobility and eco-friendly features, have been widely used in various scenarios such as home emergency power backup, outdoor travel and camping, and disaster relief power supply. In recent years, users have continuously increased their requirements for the capacity of energy storage power supplies. To meet the needs of high-power appliances such as refrigerators, air conditioners, and outdoor equipment, large-capacity portable energy storage products with a capacity of 5 kWh or more have been launched on the market, which are sufficient to support short-term emergency power supply for households and continuous power supply for outdoor use.

[0003] When energy storage power supplies are used as backup power for homes, automatic transfer switches (ATS) are commonly employed to ensure reliable switching and uninterrupted power supply between mains power, the energy storage power supply, and the load. An ATS can monitor the mains power status in real time, supplying power from the mains when normal and automatically switching to portable energy storage power supply when abnormal. However, this solution has significant drawbacks: firstly, the high-precision detection and rapid execution mechanisms integrated within the ATS result in high equipment costs; secondly, its installation process is complex, typically requiring modifications to existing home wiring and professional commissioning, which not only increases deployment costs and difficulty but may also introduce new safety risks due to improper modifications.

[0004] Meanwhile, when deploying portable energy storage power supplies in home settings, a dedicated matching distribution box is often required to ensure proper integration with existing residential circuits. This not only involves the equipment procurement cost of the distribution box itself, but also requires comprehensive consideration of a series of complex issues such as circuit modification, space planning, interface matching, and safety regulations during installation. This results in a cumbersome overall project implementation, a high professional threshold, and significantly increases the total system cost and the difficulty of installation and commissioning. Summary of the Invention

[0005] This application provides an energy storage power source to solve at least one of the aforementioned technical problems.

[0006] The energy storage power source according to the embodiments of this application includes: shell; An AC input interface and multiple AC output interfaces are provided on the housing. The AC input interface is used to connect to the mains power, and each of the AC output interfaces is used to connect to a load. The battery pack, inverter module, automatic transfer switch module, multi-load switch control module and system control board are disposed within the housing; The automatic switching module includes a first switching switch and a second switching switch, wherein the first switching switch is connected between the inverter module and the AC input interface, and the first end of the second switching switch is connected to the inverter module. The multi-load switch control module includes multiple load branches connected in parallel. Each load branch is connected in series with a switching element for controlling the on / off state of the load branch. The first terminal of each load branch is connected to the second terminal of the second switching switch. The second terminal of each load branch is connected to the multiple AC output interfaces one by one. The system control board is electrically or communicatively connected to the automatic switching module. The system control board is configured to control the automatic transfer switch module to switch between a first state and a second state. In the first state, the first transfer switch and the second transfer switch are closed, so that the mains power is supplied to the load branch selected by the multi-load switch control module through the AC input interface, the first transfer switch, and the second transfer switch. In the second state, the first transfer switch is open and the second transfer switch is closed, so that the power of the battery pack is inverted by the inverter module and then supplied to the load branch selected by the multi-load switch control module through the second transfer switch.

[0007] The energy storage power supply provided in this application integrates an automatic transfer switch module within its casing. This eliminates the need to modify existing household wiring or require professional installation, significantly reducing deployment complexity and safety risks. Furthermore, the system control board can detect the mains voltage and, in the event of an anomaly, control the automatic transfer switch module to connect the battery pack and the core household loads, ensuring uninterrupted power supply and stable operation of these loads. In addition, the energy storage power supply's built-in disconnection circuit features real-time monitoring and rapid protection. When an overload, short circuit, or leakage is detected in a load branch, the circuit automatically cuts off the output, effectively preventing appliance damage, overheating, or electrical fires, thus greatly improving electrical safety.

[0008] In some embodiments, the switching element is a relay, the system control board communicates with the relay, and the system control board is configured to detect battery information and load power information, and control the corresponding relay to disconnect when the load is overloaded or short-circuited.

[0009] In this way, by using relays as switching elements and communicating with the system control board, real-time intelligent detection and automatic protection of load power are achieved. In the event of overload or short circuit, the corresponding circuit can be quickly and accurately disconnected, improving the automation level and response speed of the protection.

[0010] In some embodiments, the system control board is further configured to control at least one of the relays to disconnect in a preset priority order when the SOC of the battery pack is less than a first preset value.

[0011] In this way, by controlling the relays to disconnect the loads in a preset priority sequence when the battery pack SOC is too low, intelligent power management and optimized allocation are achieved. This is beneficial for prioritizing the power supply duration of core or important loads and improving the strategic and economical use of power.

[0012] In some embodiments, the switching element is a manual circuit breaker configured to disconnect when the load is overloaded or short-circuited.

[0013] Thus, by using a manual circuit breaker as the switching element, a simple and low-cost overload and short-circuit protection solution is provided, which is easy for users to operate and reset intuitively, and reduces the complexity and cost of the system.

[0014] In some embodiments, the switching element is a smart circuit breaker, the system control board communicates with the smart circuit breaker, and the smart circuit breaker is configured to detect battery information and obtain load power information through the smart relay, and disconnect and send a disconnect signal to the system control board when the load is overloaded or short-circuited.

[0015] In this way, intelligent management and protection control of the intelligent circuit breaker are realized through communication between the intelligent circuit breaker and the system control board.

[0016] In some embodiments, the system control board is further configured to control a plurality of the smart circuit breakers to disconnect in a preset priority order when the SOC of the battery pack is less than a second preset value.

[0017] In this way, by controlling the smart circuit breaker to disconnect according to priority when the battery pack's SOC is insufficient through the system control board, automated load hierarchical management based on power status is achieved.

[0018] In some embodiments, the smart circuit breaker communicates with a remote control terminal. The smart circuit breaker is configured to send load power information to the remote control terminal and connect or disconnect the circuit according to a preset priority or on / off command set by the remote control terminal.

[0019] In this way, by enabling smart circuit breakers to communicate with remote control terminals, users can perform remote management, fault diagnosis, and power consumption strategy adjustments, thus improving ease of use.

[0020] In some embodiments, the maximum overcurrent value of the switching element is 15A, 20A, 30A or 50A; the maximum overcurrent value of the automatic switching module is 30A, 50A, 80A, 100A, 150A or 200A.

[0021] Thus, the switching elements and automatic switching modules equipped with the energy storage power supply have strong overcurrent capacity, which is conducive to adapting to larger loads.

[0022] In some embodiments, the energy storage power supply includes a socket panel disposed on the housing and including a plurality of AC sockets.

[0023] Thus, by placing the AC socket on the socket panel of the housing, users can quickly connect the load, improving the convenience of installation and use.

[0024] In some embodiments, the system control board is further configured to control the automatic transfer switch to switch to the first state when the mains voltage is normal, and to control the automatic transfer switch to switch to the second state when the mains voltage is abnormal.

[0025] In this way, the energy storage power supply can supply power to the load together with the mains power supply, or even supply power to the load independently, even when the mains power supply is available.

[0026] In some embodiments, the energy storage power supply further includes a voltage detection module connected to the system control board. The voltage detection module is used to detect the mains voltage signal of the AC input interface and transmit the mains voltage signal to the system control board. The system control board is used to determine whether the mains voltage is abnormal or normal based on the mains voltage signal.

[0027] In this way, by adding a voltage detection module and connecting it to the system control board, real-time monitoring and automatic judgment of the mains voltage are realized. This is beneficial for the system to make timely and accurate switching responses when the mains voltage is abnormal, thereby improving the intelligence level and power supply reliability of the energy storage power supply.

[0028] In some embodiments, when the automatic switching module is in the first state, the system control board is configured to: if the first condition is met, control the inverter module to convert the mains power into DC power and then charge the battery pack.

[0029] In this way, by having the system control board determine and control the inverter module to convert the mains power to DC power to charge the battery pack in the first state, it is possible to supplement the battery with energy storage while the mains power is supplying power normally. This helps to keep the battery fully charged and ensures that backup power can be provided immediately when the mains power is interrupted, thereby improving the power supply's endurance guarantee capability.

[0030] In some embodiments, when the automatic switching module is in the first state, the system control board is configured to: if a second condition is met, control the inverter module to convert the DC power of the battery pack into AC power, so that the electrical energy of the battery pack is supplied to the load branch selected by the multi-path load switch control module via the second switching switch.

[0031] In this way, by controlling the inverter module to invert and output the battery pack power when specific conditions are met in the first state, the battery can still participate in power supply in the mains power mode. This is conducive to flexibly allocating power according to system needs, enhancing the adaptability and reliability of the power supply scheme, and making it easier to cope with the needs of mains power fluctuations or temporary load increases.

[0032] In some embodiments, the automatic switching module further includes a third switching switch, through which the inverter is connected to the first switching switch and the second switching switch respectively. The system control board is also configured to control the third switching switch to close when the battery pack needs to be charged or discharged.

[0033] In this way, by setting a third switching switch and closing it during battery charging and discharging, a clear separation and control of the charging and discharging paths is achieved, which helps the system to manage the battery charging and discharging process more accurately and safely, and improves the flexibility of circuit control and overall operating efficiency.

[0034] Additional aspects and advantages of 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 embodiments of this application. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein: Figure 1 This is a circuit diagram of an energy storage power supply according to a certain embodiment of this application; Figure 2 This is a circuit diagram of an energy storage power supply according to a certain embodiment of this application; Figure 3 This is a circuit diagram of an energy storage power supply according to a certain embodiment of this application; Figure 4 This is a schematic diagram of the energy storage power supply according to an embodiment of this application; Figure 5 This is a circuit diagram of an energy storage power supply according to a certain embodiment of this application.

[0036] Explanation of reference numerals in the attached drawings: Energy storage power supply 100, casing 10, AC input interface 11, AC output interface 12, socket panel 13, AC socket 14, battery pack 20, inverter module 30, automatic transfer switch module 40, first transfer switch 41, second transfer switch 42, third transfer switch 43, load switch control module 50, load branch 51, switching element 52, system control board 60, voltage detection module 70, mains power 200, load 300. Detailed Implementation

[0037] 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. 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," "counterclockwise," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings, and are 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 limiting this application. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] 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.

[0039] 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.

[0040] 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.

[0041] Please see Figures 1 to 3The energy storage power supply 100 of this application includes a housing 10, an AC input interface 11 and multiple AC output interfaces 12 disposed on the housing 10, a battery pack 20, an inverter module 30, an automatic transfer switch module 40, a multi-load switch control module 50, and a system control board 60 disposed inside the housing 10. The AC input interface 11 is used to connect to the mains power 200, and each AC output interface 12 is used to connect to the load 300. The automatic transfer switch module 40 includes a first transfer switch 41 and a second transfer switch 42, wherein the first transfer switch 41 is connected between the inverter module 30 and the AC input interface 11, and the first end of the second transfer switch 42 is connected to the inverter module 30. The multi-load switch control module 50 includes multiple load branches 51 connected in parallel, and each load branch 51 is connected in series with a switching element 52 for controlling the on and off of the load branch 51. The first end of each load branch 51 is connected to the second end of the second switch 42, and the second end of each load branch 51 is connected to a plurality of AC output interfaces 12 in a corresponding manner. The system control board 60 is electrically or communicatively connected to the automatic switch module 40. The system control board 60 is configured to control the automatic switch module 40 to switch between a first state and a second state. In the first state, the first switch 41 and the second switch 42 are closed, so that the mains power 200 supplies power to the load branch 51 selected by the multi-path load switch control module 50 through the AC input interface 11, the first switch 41 and the second switch 42. In the second state, the first switch 41 is open and the second switch 42 is closed, so that the power of the battery pack 20 is inverted by the inverter module 30 and then supplied to the load branch 51 selected by the multi-path load switch control module 50 through the second switch 42.

[0042] The energy storage power supply 100 provided in this application integrates the automatic transfer switch module 40 within the housing 10 of the energy storage power supply 100. This eliminates the need to modify the existing household circuitry or require installation by professional technicians, significantly reducing deployment difficulty and safety risks. Furthermore, the system control board 60 can detect the voltage at the mains power terminal 200 and, in the event of an abnormal voltage, control the automatic transfer switch module 40 to connect the battery pack 20 and the core household load 300, thereby achieving uninterrupted power supply and ensuring the stable operation of the core household load 300. In addition, the built-in disconnection circuit of the energy storage power supply 100 has real-time monitoring and rapid protection functions. When an overload, short circuit, or leakage is detected in the load branch 51, the circuit can automatically disconnect the output, effectively preventing damage to electrical appliances, overheating of lines, or electrical fires, thus greatly improving electrical safety.

[0043] Specifically, in this embodiment, the housing 10 can be made of high-strength engineering plastic, with an overall rectangular structure and rounded corners to avoid damage from sharp corners. Multiple AC input interfaces 11 and multiple AC output interfaces 12 are centrally arranged on the front area of ​​the housing 10.

[0044] In some embodiments, the AC input interface 11 and the AC output interface 12 may also be equipped with an anti-misinsertion baffle structure and a dust cover. The anti-misinsertion baffle can prevent the risk of short circuit caused by foreign objects entering, and the dust cover can prevent dust from entering the interface when not in use.

[0045] In this embodiment, a battery pack 20 mounting slot is provided inside the outer casing 10. The battery pack 20 is installed in the mounting slot by means of buckles or bolts. The battery pack 20 is electrically connected to the inverter module 30 through wires. The output terminal of the inverter module 30 can be connected to the first switching switch 41 and the second switching switch 42 of the automatic switching switch module 40 through copper busbars respectively. The AC input interface 11 is directly connected to the input terminal of the first switching switch 41 through wires to form a path between the mains power 200 and the inverter module 30.

[0046] In this embodiment, the input terminals of each load branch 51 of the multi-load switch control module 50 can be connected to the output terminal of the second switching switch 42 via a busbar. The system control board 60 can be connected to the automatic switching switch module 40 and the multi-load switch control module 50 via ribbon cables, and is also connected to the AC input interface 11 via a voltage detection line.

[0047] In this embodiment, the automatic switching module 40 is driven by an electrical signal output from the system control board 60. When the system control board 60 detects that the mains power 200 is normal, it controls the automatic switching module 40 to switch to the first state, that is, the system control board 60 outputs a control signal to make the first switching switch 41 and the second switching switch 42 close synchronously. At this time, the mains power 200 enters the multi-channel load switch control module 50 sequentially through the AC input interface 11, the first switching switch 41, and the second switching switch 42, and is then delivered to the corresponding AC output interface 12 through the selected load branch 51 to supply power to the load 300. When the mains power 200 is detected to be de-energized, the automatic switching module 40 is controlled to switch to the second state, that is, the system control board 60 outputs a signal to disconnect the first switching switch 41, while keeping the second switching switch 42 closed. At this time, the DC power stored in the battery pack 20 is converted into AC power by the inverter module 30 and then delivered to the multi-channel load switch control module 50 through the second switching switch 42 to achieve uninterrupted power supply to the load 300.

[0048] Please see Figure 1In some embodiments, the switching element 52 is a relay, the system control board 60 communicates with the relay, and the system control board 60 is configured to detect battery information and load 300 power information, and control the corresponding relay to disconnect when the load 300 is overloaded or short-circuited.

[0049] Thus, by using a relay as the switching element 52 and communicating with the system control board 60, real-time intelligent detection and automatic protection of the 300 kW load are achieved. In the event of overload or short circuit, the corresponding circuit can be quickly and accurately disconnected, improving the automation level and response speed of the protection.

[0050] Specifically, in some embodiments, the switching element 52 can be a relay, typically an electromagnetic relay. Multiple relays are connected to the circuit board of the multi-channel load switch control module 50. Each relay is connected in series in a load branch 51 to form an independent control structure. The input terminal of the relay is connected to the bus terminal of the load branch 51 through a solder pad, and the output terminal is connected to the corresponding AC output interface 12 through a solder pad. The system control board 60 drives the coil of the relay to switch on and off by outputting a PWM control signal, thereby controlling the conduction and disconnection of the load branch 51.

[0051] In some embodiments, the system control board 60 integrates a voltage acquisition module, a current acquisition module, and a power calculation unit. The voltage acquisition module acquires the voltage signal of the battery pack 20 through a voltage divider resistor circuit, the current acquisition module acquires the current signal of the load branch 51 through a Hall sensor connected in series in the main circuit, and the power calculation unit calculates the power information of each load branch 51 in real time based on the acquired voltage and current signals.

[0052] In some embodiments, when an overload or short circuit occurs in a load branch 51, the current acquisition module detects that the current in the circuit exceeds the short circuit protection threshold, and the system control board 60 outputs a control signal to disconnect the corresponding relay. Furthermore, the system's audible and visual alarm module can be triggered simultaneously to issue an alarm prompt.

[0053] In some embodiments, the system control board 60 is also configured to control at least one relay to disconnect in a preset priority order when the SOC of the battery pack 20 is less than a first preset value.

[0054] Thus, by controlling the relays of the system control board 60 to disconnect the load 300 in a preset priority sequence when the battery pack 20SOC is too low, intelligent power management and optimized allocation are achieved. This is beneficial for prioritizing the power supply duration of core or important loads 300, and improves the strategic and economical use of power.

[0055] Specifically, in some embodiments, the system control board 60 can collect the SOC information of the battery pack 20 in real time through the battery management system (BMS). The battery management system and the battery pack 20 can be connected through a shielded wiring harness, which can effectively resist external electromagnetic interference and ensure the stability of the collected signal.

[0056] In some embodiments, the system control board 60 has a pre-stored load 300 priority configuration table. Users can customize the settings through the local operation panel or remote control terminal of the energy storage power supply 100, dividing different load branches 51 into different levels such as core load branches, important load branches, and general load branches. For example, the branches corresponding to the core essential loads 300 of the household, such as refrigerators, emergency lighting, and medical equipment, are set to the highest priority, the branches corresponding to the non-essential loads 300, such as air conditioners and televisions, are set to medium priority, and the branches corresponding to the auxiliary loads 300, such as humidifiers and air purifiers, are set to general priority.

[0057] In some embodiments, when the system control board 60 detects through the battery management system that the SOC of the battery pack 20 is less than a first preset value (e.g., 20%), it immediately calls the load 300 priority configuration table and outputs disconnect signals to the corresponding relay drive circuits in sequence according to the preset priority from low to high. Specifically, it first outputs a signal to disconnect the relay corresponding to the general load branch 51, stopping the power supply to the general load 300; if the SOC continues to drop to a certain threshold below the first preset value (e.g., 10%), it then disconnects the relay corresponding to the important load branch 51, retaining power supply only to the core load branch 51. At the same time, the system control board 60 controls the local display screen to display the current SOC status and load 300 disconnection information, reminding the user to pay attention to the battery status.

[0058] Please see Figure 2 In some embodiments, the switching element 52 is a manual circuit breaker configured to disconnect when an overload or short circuit occurs in the load 300.

[0059] Thus, by using a manual circuit breaker as the switching element 52, a simple and low-cost overload and short-circuit protection scheme is provided, which is easy for users to operate and reset intuitively, and reduces the complexity and cost of the system.

[0060] Specifically, in some embodiments, the switching element 52 may also be a manual circuit breaker. The operating handle of the manual circuit breaker extends to the side of the housing 10 of the energy storage power supply 100, and the surface is provided with anti-slip texture. The operating handle is marked with "close" and "open" signs for easy and intuitive operation by the user.

[0061] In some embodiments, when load 300 is overloaded, the current in load branch 51 exceeds the rated current of the manual circuit breaker. The bimetallic strip bends and deforms under the thermal effect of the current, pushing the tripping mechanism to operate. The tripping mechanism adopts a lever transmission structure, which can amplify the driving force, causing the circuit breaker to automatically disconnect and cut off load branch 51. The overload protection action time is adaptively adjusted according to the magnitude of the overload current; the larger the overload current, the shorter the action time. When load 300 is short-circuited, the short-circuit current generates a strong electromagnetic force, driving the iron core of the electromagnetic trip unit to quickly close, triggering the tripping mechanism to instantaneously disconnect the circuit breaker. After the fault is cleared, the user only needs to manually move the operating handle to the "close" position to reset the circuit breaker and restore the power supply to load branch 51.

[0062] In some embodiments, the manual circuit breaker can be replaced with a fuse, but after the fuse blows, a new fuse element needs to be replaced to restore power supply, which is relatively cumbersome and not reusable. Alternatively, it can be replaced with a residual current circuit breaker, which adds residual current protection function to the original overload and short circuit protection functions. It integrates a zero-sequence current transformer and a residual current trip unit, which can detect the leakage current of the load branch 51 and automatically disconnect when the leakage current exceeds the preset value, further improving the safety of electricity use, but the cost is relatively high.

[0063] Please see Figure 3 In some embodiments, the switching element 52 is a smart circuit breaker, and the system control board 60 communicates with the smart circuit breaker. The smart circuit breaker is configured to detect battery information and obtain power information of the load 300 through a smart relay, and disconnect and send a disconnect signal to the system control board 60 when the load 300 is overloaded or short-circuited.

[0064] In this way, intelligent management and protection control of the intelligent circuit breaker are realized through communication between the intelligent circuit breaker and the system control board 60.

[0065] Specifically, in some embodiments, the switching element 52 may also be a smart circuit breaker. The smart circuit breaker collects the current signal of the load branch 51 through a current sensor and the voltage signal of the load 300 through a voltage sensor, and then calculates the power information of the load 300. The system control board 60 sends control commands to the smart circuit breaker through a communication interface. The smart circuit breaker then feeds back the collected power information of the load 300 and its own operating status information (such as closing / opening status and fault status) to the system control board 60 in real time. When the smart circuit breaker detects that the power of the load 300 exceeds the preset overload threshold or detects a short circuit fault, it immediately drives the circuit breaker to open and sends a disconnection signal and the corresponding overload or short circuit fault code to the system control board 60 through the communication interface. After receiving the signal, the system control board 60 can display the fault information and fault occurrence time of the corresponding load branch 51 on the local OLED display panel, and trigger a buzzer alarm.

[0066] In some embodiments, the system control board 60 is also configured to control multiple smart circuit breakers to disconnect in a preset priority order when the SOC of the battery pack 20 is less than a second preset value.

[0067] Thus, by controlling the intelligent circuit breaker to disconnect according to priority when the battery pack 20 SOC is insufficient through the system control board 60, automated load hierarchical management based on power status is realized.

[0068] Specifically, in some embodiments, the system control board 60 can generate corresponding smart circuit breaker disconnection commands based on a preset load priority list 300 to control the corresponding smart circuit breaker to disconnect. The system control board 60 can store multiple priority configuration schemes internally, and users can configure and modify them according to their own needs through local operation buttons or remote communication interfaces. Users can divide the smart circuit breakers corresponding to different load branches 51 into different priority levels.

[0069] In some embodiments, when the system control board 60 detects that the SOC of the battery pack 20 is less than a second preset value (e.g., 30%) through the SOC threshold judgment unit, it immediately triggers the priority execution unit to operate. The priority execution unit sends disconnect commands to the corresponding smart circuit breakers in a preset order of low to high priority. After receiving the disconnect command, the microprocessor inside the smart circuit breaker parses the command and drives the tripping mechanism to disconnect the load branch 51 through the drive circuit. After the disconnection is completed, it sends a disconnection confirmation signal to the system control board 60. After receiving the confirmation feedback signal, the system control board 60 sends a disconnection command to the next lower priority smart circuit breaker, ensuring that the disconnection process of the load 300 is carried out in an orderly manner and avoiding voltage fluctuations caused by the simultaneous disconnection of multiple loads 300. If, after disconnecting a portion of the low-priority load 300, the SOC of the battery pack 20 stops decreasing and recovers to above the second preset value (e.g., 30%), the system control board 60 can send a closing command to the disconnected smart circuit breaker according to the user-preset strategy to restore power supply to the corresponding load 300. In automatic recovery mode, the recovery order is the reverse of the disconnection order, gradually recovering from high priority to low priority.

[0070] In some embodiments, the smart circuit breaker communicates with a remote control terminal. The smart circuit breaker is configured to send load power information to the remote control terminal and connect or disconnect the circuit according to a preset priority or on / off command set by the remote control terminal.

[0071] In this way, by enabling smart circuit breakers to communicate with remote control terminals, users can perform remote management, fault diagnosis, and power consumption strategy adjustments, thus improving ease of use.

[0072] Specifically, in some embodiments, the smart circuit breaker is equipped with a remote communication module, enabling wireless communication with a remote control terminal. Optionally, the smart circuit breaker supports multiple communication protocols such as Wi-Fi (802.11 b / g / n), Bluetooth (BLE 5.0), or LoRa (SX1278 chip), allowing the selection of the appropriate communication method based on the communication distance and environmental requirements of the application scenario. The remote control terminal can be a smartphone, tablet, laptop, or a dedicated remote monitoring platform.

[0073] Furthermore, the intelligent circuit breaker can send data such as the power information of the load 300, the SOC information of the battery pack 20, its own on / off status, and fault information to the remote control terminal according to a preset cycle. After receiving the data, the remote control terminal displays it to the user, allowing the user to monitor the operating status of the energy storage power supply 100 in real time. The user can set the preset priority of each load branch 51 through the APP or web interface of the remote control terminal, or directly send on / off commands to the corresponding intelligent circuit breaker. After receiving the remote control command, the intelligent circuit breaker's internal microprocessor decrypts and parses the command, drives the tripping mechanism or operating mechanism to complete the connection or disconnection of the load branch 51, and encrypts and feeds back the command execution result to the remote control terminal, forming a complete remote control closed loop.

[0074] In some embodiments, when the smart circuit breaker detects a fault in load 300, in addition to sending a fault signal to the system control board 60, it will also send alarm information to the remote control terminal through the remote communication module and trigger the audible and visual alarm on the remote control terminal to remind the user to handle the fault in a timely manner.

[0075] Please see Figures 1 to 3 In some embodiments, the maximum overcurrent value of the switching element 52 is 15A, 20A, 30A or 50A.

[0076] Thus, the input socket of the energy storage power supply 100 has a strong overcurrent capacity, which is conducive to adapting to a larger load 300.

[0077] Specifically, in this embodiment, the maximum overcurrent value of the switching element 52 is set to 50A. In other embodiments, the maximum overcurrent value of the switching element 52 can also be set to various specifications such as 15A, 20A, 30A or 50A. For example, a relay with a rated current of A can be selected for the A specification of the switching element 52, and a relay with a rated current of 50A can be selected for the 50A specification, to ensure that the current carrying capacity of each component is consistent and to avoid local components becoming overcurrent bottlenecks.

[0078] In some embodiments, the maximum overcurrent value of the automatic switching module 40 is 50A.

[0079] Thus, the automatic switching module 40 of the energy storage power supply 100 has a strong overcurrent capability, which is beneficial for adapting to larger loads 300.

[0080] Specifically, in this embodiment, the maximum overcurrent value of the automatic transfer switch module 40 is set to 50A. In other embodiments, the maximum overcurrent value of the automatic transfer switch module 40 is set to various specifications such as 30A, 80A, 100A, 150A, or 200A. For example, in the 30A specification automatic transfer switch module 40, the first transfer switch 41 and the second transfer switch 42 can be relays with a rated current of 30A. In the 50A specification automatic transfer switch module 40, the first transfer switch 41 and the second transfer switch 42 can be relays with a rated current of 50A. In the 100A and above specification automatic transfer switch module 40, the first transfer switch 41 and the second transfer switch 42 are contactors instead of relays to ensure that the current carrying capacity of each component is consistent and to avoid local components becoming overcurrent bottlenecks.

[0081] In some embodiments, the maximum overcurrent values ​​of the AC input interface 11 and the AC output interface 12 are matched with the overcurrent specifications of the automatic transfer switch module 40, and are also set to various specifications such as 30A, 50A, 80A, 100A, 150A or 200A.

[0082] Please see Figure 4 In some embodiments, the energy storage power supply 100 includes a socket panel 13 disposed on the housing 10 and including a plurality of AC sockets 14.

[0083] Thus, by placing the AC socket 14 on the socket panel 13 of the housing, it is easy for users to quickly connect the load 300, improving the convenience of installation and use.

[0084] Specifically, in this embodiment, a socket panel 13 integrating multiple AC sockets 14 is provided on the energy storage power supply 100. The AC sockets 14 are arranged in a matrix or linear pattern to ensure that sufficient space is reserved between each AC socket 14 for plugging and unplugging, and to avoid mutual interference between adjacent plugs.

[0085] In this embodiment, the socket panel 13 is fixed to the outer casing 10 of the energy storage power supply 100 by bolts, and a sealing ring is provided between the socket panel 13 and the outer casing 10 to improve dustproof and waterproof performance. The surface of the socket panel 13 is printed with clear interface markings for easy identification by users.

[0086] In some embodiments, the socket panel 13 integrates at least one AC socket 14, which is a NEMA 5-20 standard socket. This interface is a standard household socket specification, used to provide convenient 120V AC power for various common low-voltage single-phase electrical devices (such as laptops, lamps, small household appliances, etc.). In some embodiments, the AC socket 14 may also include single-phase sockets and split-phase sockets.

[0087] In some embodiments, the energy storage power supply 100 includes wheels, and the housing 10 is disposed on the wheels.

[0088] Thus, by mounting the outer casing 10 on the wheels, the energy storage power supply 100 can be moved easily, which helps to improve the portability of the energy storage power supply 100.

[0089] Specifically, in this embodiment, wheels are provided on the outer casing 10 of the energy storage power supply 100 to improve the product's portability, allowing users to flexibly move the energy storage power supply 100 according to the load 300 position or usage needs. Four wheels are arranged in a rectangle at the four corners of the bottom of the outer casing 10 to ensure stable support. Each wheel is connected to the outer casing 10 via a bracket, and the bracket is bolted to the mounting base at the bottom of the outer casing 10. Ball bearings are installed inside the wheels to reduce rolling resistance.

[0090] In some embodiments, some of the wheels may also be equipped with a braking device, which includes a brake pedal and brake pads. Pressing the brake pedal can make the brake pads make tight contact with the wheel body, thereby fixing the energy storage power supply 100 and preventing accidental movement.

[0091] In some embodiments, the wheels are detachably mounted on the housing 10 of the energy storage power supply 100. This facilitates later maintenance and replacement; when the wheels are worn or the bearings are damaged, the wheels can be removed and replaced individually without replacing the entire housing 10, thus reducing maintenance costs.

[0092] Please see Figure 5 In some embodiments, the system control board 60 is further configured to control the automatic transfer switch to switch to the first state when the mains power 200 voltage is normal, and to control the automatic transfer switch to switch to the second state when the mains power 200 voltage is abnormal.

[0093] In this way, the energy storage power supply 100 can supply power to the load 300 together with the mains power supply 200 even when the mains power supply 200 is available, and can even supply power to the load 300 alone after the mains power supply 200 fails.

[0094] In some embodiments, the energy storage power supply 100 further includes a voltage detection module 70, which is connected to the system control board 60. The voltage detection module 70 is used to detect the AC mains voltage signal 200 of the AC input interface 11 and transmit the AC mains voltage signal 200 to the system control board 60. The system control board 60 is used to determine whether the AC mains voltage 200 is abnormal or normal based on the AC mains voltage signal 200.

[0095] Thus, by adding a voltage detection module 70 and connecting it to the system control board 60, real-time monitoring and automatic judgment of the mains voltage 200 are realized. This is beneficial for the system to make timely and accurate switching responses when the mains voltage 200 is abnormal, thereby improving the intelligence level and power supply reliability of the energy storage power supply 100.

[0096] Specifically, when the mains voltage 200 is detected to be within the normal range, the system control board 60 can output a control signal to the automatic transfer switch module 40. When the system control board 60 controls the automatic transfer switch module 40 to connect only the AC input interface 11 and the AC output interface 12, the mains voltage 200 is directly supplied to the load branch 51 through the automatic transfer switch module 40. At this time, the energy storage power supply 100 is in standby mode, and the battery pack 20 is float-charged through the mains voltage 200. When the system control board 60 controls the automatic transfer switch module 40 to connect both the AC input interface 11 and the AC output interface 12, and the battery pack 20 and the AC output interface 12, the mains voltage 200 and the energy storage power supply 100 work together to supply power to the load 300. At this time, the system control board 60 collects the load 300 current signal through the voltage detection module 70 and allocates the power supply ratio of the mains voltage 200 and the energy storage power supply 100 according to the load 300 current to ensure stable power supply. In the process of coordinated power supply, the inverter module 30 operates in inverter mode, converting the DC power of the battery pack 20 into AC power that is in the same frequency and phase as the mains power 200, thus achieving seamless parallel power supply with the mains power 200.

[0097] In some embodiments, when the automatic switching module 40 is in the first state, the system control board 60 is configured to: if the first condition is met, control the inverter module 30 to convert the mains power 200 into DC power to charge the battery pack 20.

[0098] Thus, by having the system control board 60 determine and control the inverter module 30 to convert the mains power 200 into DC power to charge the battery pack 20 in the first state, it is possible to supplement the battery with energy storage while the mains power 200 is supplying power normally. This helps to keep the battery fully charged and ensures that backup power can be provided immediately when the mains power 200 is interrupted, thereby improving the power supply's endurance guarantee capability.

[0099] In some embodiments, when the automatic switching module 40 is in the first state, the system control board 60 is configured to: if the second condition is met, control the inverter module 30 to convert the DC power of the battery pack 20 into AC power, so that the electrical energy of the battery pack 20 can supply power to the load branch 51 selected by the multi-path load switch control module 50 via the second switching switch 42.

[0100] Thus, by controlling the inverter module 30 to invert and output the power of the battery pack 20 when specific conditions are met in the first state, the battery can still participate in power supply in the mains power 200 mode. This is conducive to flexibly allocating power according to system needs, enhancing the adaptability and reliability of the power supply scheme, and making it easier to cope with the needs of mains power 200 fluctuations or temporary increases in load 300.

[0101] In some embodiments, the system control board 60 is further configured to control the automatic switching module 40 to disconnect the connection between the AC output interface 12 and the AC input interface 11 when the mains power 200 is interrupted or a first condition is met. The first condition includes that the current time is during the peak power consumption period of the mains power 200 and the SOC of the battery pack 20 is greater than or equal to a third preset value.

[0102] Thus, when the mains power supply is at its peak and the battery pack 20 has sufficient power, disconnecting the mains power supply 200 and using only the battery pack 20 for power supply helps reduce electricity costs and improve energy economy.

[0103] Specifically, in this embodiment, when the mains voltage 200 is abnormal or a first condition is met, the system control board 60 outputs a control signal to energize the coil of the second switching switch 42, closing its contacts, while simultaneously de-energizing the coil of the first switching switch 41, opening its contacts. The first condition includes the current time being during the peak electricity consumption period of the mains power 200 and the SOC of the battery pack 20 being greater than or equal to a third preset value. The third preset value can be set to 80%, and the peak electricity consumption period can be preset to 8:00-11:00 and 18:00-21:00 daily.

[0104] Through this control logic, when the mains power supply is at its peak and the battery pack 20 has sufficient power, the mains power supply 200 is disconnected and only the battery pack 20 is used for power supply. This avoids using the expensive mains power supply 200 during peak hours, effectively reducing the user's electricity costs. At the same time, it makes reasonable use of the electrical energy stored in the battery pack 20, improving energy economy.

[0105] In some embodiments, the system control board 60 is further configured to control the automatic switching module 40 to connect the AC output interface 12 and the AC input interface 11 when a second condition is met. The second condition includes that the current time is during the peak power consumption period of the mains power 200 and the SOC of the battery pack 20 is greater than a fourth preset value and less than a third preset value.

[0106] In this way, when the mains power is at its peak and the battery pack 20 is low on power, both the mains power 200 and the battery pack 20 can be used to supply power, thus avoiding over-discharge of the battery pack 20 and damage to it.

[0107] Specifically, in this embodiment, when the second condition is met, the system control board 60 outputs a control signal to energize the coils of the first switch 41 and the second switch 42, causing their contacts to close. The second condition includes the current time being during peak electricity consumption hours of the mains power 200 and the SOC of the battery pack 20 being greater than or equal to a fourth preset value and less than a third preset value. The fourth preset value can be set to 20%, and the peak electricity consumption hours can be preset to 8:00-11:00 and 18:00-21:00 daily.

[0108] Through this control logic, when the mains power 200 is at its peak and the battery pack 20 is low on power, the mains power 200 is connected and the battery pack 20 and the mains power 200 are used to supply power to the load branch 51 simultaneously, which can prevent the battery pack 20 from being over-discharged.

[0109] In some embodiments, the system control board 60 is further configured to acquire the voltage phase, amplitude, and frequency of the mains power 200 and control the phase difference between the output voltage of the inverter module 30 and the voltage of the mains power 200 to not exceed ±2°, the amplitude difference between the output voltage of the inverter module 30 and the voltage of the mains power 200 to not exceed ±10%, and the frequency difference between the output voltage of the inverter module 30 and the voltage of the mains power 200 to not exceed ±0.5Hz.

[0110] In this way, by controlling the output voltage of the inverter module 30, the mains power 200 can be tracked, improving the intelligence of the energy storage power supply 100 and helping to reduce the user's electricity costs.

[0111] Specifically, the system control board 60 can acquire the voltage phase, amplitude, and frequency information of the mains power 200 in real time through a voltage sampling circuit, which can be connected in parallel to the automatic transfer switch module 40. The system control board 60 controls the output voltage of the inverter module 30 to have a phase difference of no more than ±2°, an amplitude difference of no more than ±10%, and a frequency difference of no more than ±0.5Hz with respect to the voltage of the mains power 200. In some embodiments, the phase difference between the output voltage of the inverter module 30 and the voltage of the mains power 200 can be ±1°, the amplitude difference can be ±8%, ±6%, ±4%, or ±2%, and the frequency difference can be ±0.5Hz, ±0.4Hz, ±0.3Hz, ±0.2Hz, and ±0.1Hz. In this embodiment, the system control board 60 should control the output voltage of the inverter module 30 to have essentially the same phase, amplitude, and frequency as the voltage of the mains power 200, that is, a phase difference of 0°, an amplitude difference of 0%, and a frequency difference of 0Hz.

[0112] In some embodiments, the system control board 60 is further configured to acquire the voltage phase of the mains power 200 and control the phase of the output voltage of the inverter module 30 to lag the voltage phase of the mains power 200 by a preset difference.

[0113] In this way, by setting the phase of the output voltage of the inverter module 30 to lag the phase of the mains voltage 200, a voltage difference is formed, enabling current to flow from the mains voltage 200 to the energy storage device and avoiding power outage.

[0114] Specifically, in this embodiment, after the system control board 60 obtains the voltage phase of the mains power 200 through the voltage sampling circuit, it can calculate the target phase of the output voltage of the inverter module 30 through the built-in phase adjustment algorithm. This target phase lags behind the voltage phase of the mains power 200 by a preset difference. The preset difference can be set according to the safety specifications of household circuits and the power rating of the energy storage power supply 100, and is usually set to 5°~10°.

[0115] This current flow control effectively avoids voltage fluctuations in the mains power 200 caused by power outages, complying with household electricity safety regulations. It also prevents the energy storage power supply 100 from losing power unnecessarily, ensuring the rational use of energy. Especially in modes where the mains power 200 and battery pack 20 work together for power supply, or when the mains power 200 is charging during off-peak hours, the current direction can be precisely controlled to ensure that the mains power 200 is used only for power supply or charging, improving the safety and stability of the system operation.

[0116] Please see Figures 1 to 3 In some embodiments, the system control board 60 is also configured to control the automatic transfer switch module 40 to connect the AC output interface 12 and the AC input interface 11 during off-peak hours of the mains power 200, so that the mains power 200 can simultaneously supply power to the battery pack 20 and the load branch 51.

[0117] In this way, when the AC power 200 is low and the battery pack 20 is low, both AC power 200 and battery pack 20 can be used to supply power, thus avoiding over-discharge of battery pack 20 and damage to battery pack 20.

[0118] Specifically, in this embodiment, when the current time is during a low-cost period of the mains power 200, the system control board 60 controls the first switching switch 41 and the second switching switch 42 to close, allowing the mains power 200 to simultaneously supply power to both the battery pack 20 and the load branch 51. This control mode utilizes the low-cost mains power 200 to charge the battery pack 20 during low-cost periods, reducing battery charging costs. Simultaneously, the charging process does not affect the normal operation of the load 300, avoiding the occupation of power supply to the load 300 during standalone charging. Furthermore, compared to recharging the battery pack 20 after it is completely depleted, timely charging during low-cost periods prevents over-discharge of the battery pack 20, further protecting it and extending its lifespan.

[0119] Please see Figure 5In some embodiments, the automatic switching module 40 further includes a third switching switch 43, through which the inverter is connected to the first switching switch 41 and the second switching switch 42 respectively. The system control board 60 is also configured to control the third switching switch to close when the battery pack 20 needs to be charged or discharged.

[0120] Thus, by setting a third switching switch 43 and closing it during battery charging and discharging, a clear separation and control of the charging and discharging paths is achieved, which helps the system to manage the battery charging and discharging process more accurately and safely, and improves the flexibility of circuit control and overall operating efficiency.

[0121] Please see Figures 1 to 3 In some embodiments, the automatic switching module 40 further includes a third switching switch 43, through which the battery pack 20 is connected to the first switching switch 41 and the second switching switch 42 respectively. The system control board 60 is also configured to, under a second condition, control the first switching switch 41 and the second switching switch 42 to connect and / or control the second switching switch 42 and the third switching switch 43 to connect.

[0122] Thus, by controlling the connection of the corresponding power supply branch according to the power demand of the load branch 51 under the second condition, the working mode of the energy storage system can be finely controlled. This is beneficial for the system to automatically select the optimal power supply path according to the actual load 300, thereby improving the overall energy efficiency and economy of the system.

[0123] Specifically, in the embodiments of this application, the energy storage power supply 100 is usually set with two working modes, the second condition being the self-consumption mode and the first condition being the energy storage priority mode. The specific working mode can be selected according to the current power demand or the peak and off-peak periods of the mains power.

[0124] In this embodiment of the application, if the second condition can also be a self-generated and self-used mode, then the first switching switch 41 and the second switching switch 42 are connected, or the second switching switch 42 and the third switching switch 43 are connected, and either the mains power 200 or the battery pack 20 can output 30A current to supply power to the load branch 51. They can also be connected at the same time, and the load branch 51 can be supplied simultaneously through the mains power 200 or the battery pack 20.

[0125] In some embodiments, the system control board 60 is further configured to, under a first condition, control the first switching switch 41 and the second switching switch 42 to connect if the SOC of the battery pack 20 is greater than or equal to a sixth preset value; and control the first switching switch 41, the second switching switch 42 and the third switching switch 43 to connect if the SOC of the battery pack 20 is less than the sixth preset value, so that the mains power 200 simultaneously supplies power to the battery pack 20 and the load branch 51.

[0126] Thus, by controlling whether the mains power supply 100 is powered solely by the mains power supply 200 or simultaneously powering the load 300 and charging the battery pack 20 based on the power demand of the load branch 51 and the SOC of the battery pack 20 under the first condition, it is possible to supplement the energy of the energy storage power supply 100 when the mains power supply 200 is available.

[0127] Specifically, in this embodiment, when the energy storage power supply 100 is in the first condition (i.e., energy storage priority mode), the first switching switch 41 and the second switching switch 42 are connected, and the load branch 51 is powered only by the mains power 200, while the battery pack 20 is not powered. However, when the SOC of the battery pack 20 is less than a sixth preset value, the third switching switch 43 is connected so that the mains power 200 can simultaneously power both the load branch 51 and the battery pack 20. Specifically, the sixth preset value can be set to 20%.

[0128] In the description of this specification, the references to "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples" refer to specific features, structures, materials, or characteristics described in connection with the described embodiment or example, which are 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.

[0129] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the stated features. In the description of this application, "multiple" means at least two, such as two or three, unless otherwise explicitly specified.

[0130] 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, the scope of which is defined by the claims and their equivalents.

Claims

1. An energy storage power source, characterized in that, include: shell; An AC input interface and multiple AC output interfaces are provided on the housing. The AC input interface is used to connect to the mains power, and each of the AC output interfaces is used to connect to a load. The battery pack, inverter module, automatic transfer switch module, multi-load switch control module and system control board are disposed within the housing; The automatic switching module includes a first switching switch and a second switching switch, wherein the first switching switch is connected between the inverter module and the AC input interface, and the first end of the second switching switch is connected to the inverter module. The multi-load switch control module includes multiple load branches connected in parallel. Each load branch is connected in series with a switching element for controlling the on / off state of the load branch. The first terminal of each load branch is connected to the second terminal of the second switching switch. The second terminal of each load branch is connected to the multiple AC output interfaces one by one. The system control board is electrically or communicatively connected to the automatic switching module. The system control board is configured to control the automatic transfer switch module to switch between a first state and a second state. In the first state, the first transfer switch and the second transfer switch are closed, so that the mains power is supplied to the load branch selected by the multi-load switch control module through the AC input interface, the first transfer switch, and the second transfer switch. In the second state, the first transfer switch is open and the second transfer switch is closed, so that the power of the battery pack is inverted by the inverter module and then supplied to the load branch selected by the multi-load switch control module through the second transfer switch.

2. The energy storage power supply according to claim 1, characterized in that, The switching element is a relay, and the system control board communicates with the relay. The system control board is configured to detect battery information and load power information, and control the corresponding relay to disconnect when the load is overloaded or short-circuited.

3. The energy storage power supply according to claim 2, characterized in that, The system control board is also configured to control at least one of the relays to disconnect in a preset priority order when the SOC of the battery pack is less than a first preset value.

4. The energy storage power supply according to claim 1, characterized in that, The switching element is a manual circuit breaker, which is configured to disconnect when the load is overloaded or short-circuited.

5. The energy storage power supply according to claim 1, characterized in that, The switching element is a smart circuit breaker. The system control board communicates with the smart circuit breaker. The smart circuit breaker is configured to detect battery information and obtain load power information through the smart relay, and disconnect and send a disconnect signal to the system control board when the load is overloaded or short-circuited.

6. The energy storage power supply according to claim 5, characterized in that, The system control board is also configured to control multiple smart circuit breakers to disconnect in a preset priority order when the SOC of the battery pack is less than a second preset value.

7. The energy storage power supply according to claim 6, characterized in that, The intelligent circuit breaker communicates with a remote control terminal. The intelligent circuit breaker is configured to send load power information to the remote control terminal and connect or disconnect according to the preset priority or on / off command set by the remote control terminal.

8. The energy storage power supply according to claim 1, characterized in that, The maximum overcurrent value of the switching element is 15A, 20A, 30A or 50A; the maximum overcurrent value of the automatic switching module is 30A, 50A, 80A, 100A, 150A or 200A.

9. The energy storage power supply according to claim 1, characterized in that, The energy storage power supply includes a socket panel disposed on the housing and includes multiple AC sockets.

10. The energy storage power supply according to claim 1, characterized in that, The system control board is also configured to control the automatic transfer switch to switch to the first state when the mains voltage is normal, and to control the automatic transfer switch to switch to the second state when the mains voltage is abnormal.

11. The energy storage power supply according to claim 10, characterized in that, The energy storage power supply also includes a voltage detection module, which is connected to the system control board. The voltage detection module is used to detect the AC input interface mains voltage signal and transmit the mains voltage signal to the system control board. The system control board is used to determine whether the mains voltage is abnormal or normal based on the mains voltage signal.

12. The energy storage power supply according to claim 11, characterized in that, When the automatic switching module is in the first state, the system control board is configured to: if the first condition is met, control the inverter module to convert the mains power into DC power and then charge the battery pack.

13. The energy storage power supply according to claim 11, characterized in that, When the automatic switching module is in the first state, the system control board is configured to: if the second condition is met, control the inverter module to convert the DC power of the battery pack into AC power, so that the power of the battery pack can be supplied to the load branch selected by the multi-load switch control module via the second switching switch.

14. The energy storage power supply according to claim 1, characterized in that, The automatic switching module also includes a third switching switch. The inverter is connected to the first switching switch and the second switching switch respectively through the third switching switch. The system control board is also configured to control the third switching switch to close when the battery pack needs to be charged or discharged.

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