Energy storage system and parallel connection device

Abstract

The application discloses an energy storage system and a parallel connection device. The energy storage system comprises a first energy storage device, a second energy storage device and a parallel connection device. The first energy storage device comprises a first grid-connected port. The second energy storage device comprises a second grid-connected port. The parallel connection device comprises a first parallel connection socket, a second parallel connection socket and a common output end. The first grid-connected port is electrically connected with the first parallel connection socket through a first pluggable connector. The second grid-connected port is electrically connected with the second parallel connection socket through a second pluggable connector. The first parallel connection socket and the second parallel connection socket are connected in parallel to the common output end. The common output end is electrically connected with a distribution box. In the case that the first grid-connected port is connected with the first parallel connection socket and the second grid-connected port is connected with the second parallel connection socket, parallel connection is realized. Otherwise, the parallel connection is released. The energy storage system can reduce installation difficulty and cost, and also reduce system integration difficulty.

Description

Technical Field

[0001] This application relates to the field of energy storage equipment technology, and more specifically, to an energy storage system and a parallel connection device. Background Technology

[0002] Balcony solar-energy storage systems, as entry-level home energy storage products, are characterized by their small size, modularity, and plug-and-play nature (usually requiring no wiring modifications). However, to meet the ever-increasing electricity demands of households, capacity expansion is typically required.

[0003] The main capacity expansion solutions in related technologies are vertical stacking and horizontal parallel operation. Vertical stacking has a lower capacity limit, while horizontal parallel operation, although capable of expanding capacity to 16-20kWh, requires complex wiring using specialized components such as T-connectors, making it difficult for ordinary users to operate. Once this complex wiring is completed, the system is often fixed, making it difficult for ordinary users to disassemble and modify, severely undermining the product's core attributes of plug-and-play and portability. Even if users have electrical knowledge, they must repeat this cumbersome wiring process every time they bring the energy storage unit back from outdoor use and reconnect it to the system. This not only results in a poor user experience but also poses a safety hazard of electric shock due to frequent wiring operations.

[0004] Therefore, existing technologies lack a solution that can achieve convenient and safe horizontal parallel operation while maintaining the plug-and-play and portable characteristics of balcony solar energy storage systems. Utility Model Content

[0005] This application provides an energy storage system and a parallel connection device to solve at least one of the above-mentioned technical problems.

[0006] The energy storage system described in this application includes:

[0007] The first energy storage device includes the first grid connection port;

[0008] The second energy storage device includes a second grid connection port;

[0009] Parallel connection device, including a first parallel socket, a second parallel socket and a common output terminal;

[0010] The first grid-connected port is configured to be electrically connected to the first parallel port via a first pluggable connector;

[0011] The second grid-connected port is configured to be electrically connected to the second parallel port via a second pluggable connector;

[0012] The first parallel connection port and the second parallel connection port are connected in parallel to the common output terminal inside the parallel connection device, and the common output terminal is configured to be electrically connected to the distribution box.

[0013] When the first grid-connected port is inserted into the first parallel socket via the first pluggable connector, and the second grid-connected port is inserted into the second parallel socket via the second pluggable connector, the first energy storage device and the second energy storage device supply power to the distribution box through the common output terminal to achieve parallel operation;

[0014] When the first pluggable connector is unplugged from the first parallel connection port, and / or the second pluggable connector is unplugged from the second parallel connection port, the first energy storage device and the second energy storage device are decoupled from parallel operation.

[0015] The energy storage system provided in this application can be pre-assembled and connected to the distribution box through a parallel connection device, which facilitates the connection with the distribution box when adding an integrated energy storage unit later, reduces installation difficulty and thus reduces costs. In addition, through the modular design of pluggable connectors and parallel sockets, the energy storage equipment can be quickly paralleled and disconnected, which facilitates installation, maintenance and flexible configuration, and reduces the difficulty of system integration.

[0016] In some embodiments, the distribution box is a single-phase distribution box, and the energy storage system further includes an output cable. The common output terminal is electrically connected to the single-phase distribution box through the output cable. The output cable includes a live wire, a neutral wire, and a ground wire. The first parallel socket and the second parallel socket are respectively connected to the live wire, neutral wire, and ground wire of the output cable through the common output terminal.

[0017] In this way, by directly connecting the output cable to the live wire, neutral wire, and ground wire of the single-phase distribution box, compatibility with the single-phase power supply system is achieved, ensuring safe and reliable power supply in single-phase scenarios.

[0018] In some embodiments, the distribution box is a split-phase distribution box, and the energy storage system further includes an output cable. The common output terminal is electrically connected to the split-phase distribution box through the output cable. The output cable includes an L1 live wire, an L2 live wire, a cable neutral wire, and a cable ground wire. The common output terminal is configured to connect the first parallel socket and the second parallel socket to the output cable, such that the neutral wire and ground wire of the first parallel socket and the second parallel socket are respectively connected to the cable neutral wire and the cable ground wire. The live wire of the first parallel socket is connected to the L1 live wire, and the live wire of the second parallel socket is connected to the L2 live wire.

[0019] In this way, by connecting the L1 and L2 live wires, the common neutral wire, and the ground wire of the split-phase distribution box through the parallel socket, support for the split-phase power distribution system is achieved, adapting to different regional power distribution standards and expanding the application scenarios.

[0020] In some embodiments, the distribution box is a three-phase distribution box, and the energy storage system further includes a third energy storage device and an output cable. The third energy storage device includes a third grid connection port, and the parallel connection device further includes a third parallel socket. The third grid connection port is configured to be electrically connected to the third parallel socket via a third pluggable connector. The third parallel socket, the first parallel socket, and the second parallel socket are connected in parallel to the common output terminal within the parallel connection device. The common output terminal is electrically connected to the three-phase distribution box via the output cable. The cable includes a phase A live wire, a phase B live wire, a phase C live wire, a neutral wire, and a ground wire. The common output terminal is configured to connect the first parallel connector, the second parallel connector, and the third parallel connector to the output cable, such that the neutral wire and ground wire of the first parallel connector, the second parallel connector, and the third parallel connector are respectively connected to the neutral wire and the ground wire of the cable. The live wire of the first parallel connector is connected to the phase A live wire, the live wire of the second parallel connector is connected to the phase B live wire, and the live wire of the third parallel connector is connected to the phase C live wire.

[0021] In this way, by connecting the third energy storage device and the three-phase live wire, multiple devices in parallel under the three-phase power distribution system are realized, the system capacity is expanded, and the power supply needs of high-power loads or three-phase balanced power supply are met.

[0022] In some embodiments, the distribution box further includes a single-phase distribution box, and the common output terminal is connected to the single-phase distribution box via the C-phase live wire, the cable neutral wire, and the cable ground wire. The parallel connection device further includes a switching switch configured to switch between a first position and a second position. When the switch is in the first position, the live wire of the first parallel socket is connected to the A-phase live wire, the live wire of the second parallel socket is connected to the B-phase live wire, and the live wire of the third parallel socket is connected to the C-phase live wire. When the switch is in the second position, the live wires of the first parallel socket, the second parallel socket, and the third parallel socket are all connected to the live wire of the same phase, wherein the live wire of the same phase is any one of the A-phase live wire, the B-phase live wire, or the C-phase live wire.

[0023] In this way, switching between three-phase live wire connection mode and single-phase live wire connection mode by switching the switch improves the system's adaptability to single-phase / three-phase power distribution scenarios and enhances equipment reusability.

[0024] In some embodiments, the first pluggable connector is fixedly connected to the first parallel port by a snap-fit ​​or threaded connection, and the second pluggable connector is fixedly connected to the second parallel port by a snap-fit ​​or threaded connection.

[0025] In this way, by securing the pluggable connector with snaps or threads, the connection meets the requirements while avoiding poor contact caused by loose connections, thus improving the stability and safety of parallel connections.

[0026] In some embodiments, the energy storage system includes a current transformer meter, the distribution box is connected to the power grid through the current transformer meter, the first energy storage device, the second energy storage device, the current transformer meter, and the parallel connection device are connected via a CAN network, and the parallel connection device is connected to a remote user terminal via a wireless network.

[0027] In this way, by combining CAN network and wireless network communication, real-time data interaction between energy storage devices, parallel connection devices, current transformer meters and remote terminals is realized, which facilitates centralized monitoring and remote control and improves the system's intelligence level.

[0028] In some embodiments, the energy storage system includes a current transformer meter, the distribution box is connected to the power grid through the current transformer meter, the current transformer meter and the first energy storage device and the second energy storage device are connected via a wireless network, and the first energy storage device and the second energy storage device are connected to a remote user terminal via a wireless network.

[0029] In this way, by integrating current transformer meters with wireless communication, real-time synchronization of electricity consumption information and energy storage device status is achieved, simplifying wiring complexity and reducing installation costs.

[0030] In some embodiments, the distribution box is a single-phase distribution box, and the first energy storage device and the second energy storage device are designated as a master and a slave device. The master and the slave device include a battery energy management system. The battery energy management system of the master device is configured to determine a power allocation result based on the current electricity consumption information of the household circuit detected by the current transformer meter and the capacity of the first energy storage device and the second energy storage device, so as to balance the capacity of the first energy storage device and the second energy storage device. The battery energy management system of the master and the slave device is configured to control the output power of the master and the slave device accordingly based on the power allocation result.

[0031] In this way, by using a balanced control strategy based on single-phase power consumption information and equipment capacity, the host achieves capacity coordination of multiple energy storage devices, avoids over-discharge / over-charging of a single device, and improves the overall utilization rate of the system.

[0032] In some embodiments, the distribution box is a three-phase distribution box, and the energy storage system further includes a third energy storage device. The third energy storage device includes a third grid connection port, and the parallel connection device further includes a third parallel socket. The third grid connection port is configured to be electrically connected to the third parallel socket via a third pluggable connector. The third parallel socket, the first parallel socket, and the second parallel socket are connected in parallel to the common output terminal inside the parallel connection device. The first energy storage device, the second energy storage device, and the third energy storage device are designated as one master and two slave devices. The master and the slave devices include a battery energy management system. The battery energy management system of the master is configured to determine the power distribution result based on the current electricity consumption information of the household three-phase circuit detected by the current transformer meter and the output power on the three phases of the power grid, so as to balance the power on the three phases of the household three-phase circuit. The battery energy management system of the master and the slave devices is configured to control the output power of the master and the slave devices accordingly based on the power distribution result.

[0033] In this way, by using the host to balance the power of the three-phase circuit based on the three-phase power consumption information and the power grid, the power balance of the three-phase circuit is achieved, avoiding single-phase overload, extending the equipment life and improving the power supply quality.

[0034] The parallel connection device according to a second embodiment of this application is used in an energy storage system, the energy storage system including a first energy storage device and a second energy storage device, the first energy storage device including a first grid connection port, the second energy storage device including a second grid connection port, and the parallel connection device including:

[0035] The first parallel socket, the first grid-connected port is configured to be electrically connected to the first parallel socket via a first pluggable connector;

[0036] The second parallel socket, the second grid-connected port is configured to be electrically connected to the second parallel socket via a second pluggable connector;

[0037] A common output terminal, wherein the first parallel socket and the second parallel socket are connected in parallel to the common output terminal inside the parallel connection device, and the common output terminal is configured to be electrically connected to the distribution box;

[0038] When the first grid-connected port is inserted into the first parallel socket via the first pluggable connector, and the second grid-connected port is inserted into the second parallel socket via the second pluggable connector, the first energy storage device and the second energy storage device supply power to the distribution box through the common output terminal to achieve parallel operation;

[0039] When the first pluggable connector is unplugged from the first parallel connection port, and / or the second pluggable connector is unplugged from the second parallel connection port, the first energy storage device and the second energy storage device are decoupled from parallel operation.

[0040] In this way, the modular design of the parallel socket and the common output terminal enables rapid parallel connection of energy storage devices, simplifies the parallel structure, and reduces hardware complexity.

[0041] In some embodiments, the distribution box is a single-phase distribution box, and the energy storage system further includes an output cable. The common output terminal is electrically connected to the single-phase distribution box through the output cable. The output cable includes a live wire, a neutral wire, and a ground wire. The first parallel socket and the second parallel socket are respectively connected to the live wire, neutral wire, and ground wire of the output cable through the common output terminal.

[0042] In this way, the standardized connection between the output cable and the single-phase distribution box ensures the compatibility between the parallel device and the single-phase system, facilitating the upgrade and transformation of existing single-phase scenarios.

[0043] In some embodiments, the distribution box is a split-phase distribution box, and the energy storage system further includes an output cable. The common output terminal is electrically connected to the split-phase distribution box through the output cable. The output cable includes an L1 live wire, an L2 live wire, a cable neutral wire, and a cable ground wire. The common output terminal is configured to connect the first parallel socket and the second parallel socket to the output cable, so that the neutral wire and ground wire of the first parallel socket and the second parallel socket are respectively connected to the cable neutral wire and the cable ground wire. The live wire of the first parallel socket is connected to the L1 live wire, and the second parallel socket is connected to the L2 live wire.

[0044] In this way, by connecting the parallel socket to the L1 and L2 live wires of the split-phase distribution box, the special needs of the split-phase power distribution system are met, and the application of the device in regional power distribution scenarios is expanded.

[0045] In some embodiments, the distribution box is a three-phase distribution box, and the energy storage system further includes a third energy storage device and an output cable. The third energy storage device includes a third grid connection port, and the parallel connection device further includes a third parallel socket. The third grid connection port is configured to be electrically connected to the third parallel socket via a third pluggable connector. The third parallel socket, the first parallel socket, and the second parallel socket are connected in parallel to the common output terminal within the parallel connection device. The common output terminal is electrically connected to the three-phase distribution box via the output cable. The cable includes a phase A live wire, a phase B live wire, a phase C live wire, a neutral wire, and a ground wire. The common output terminal is configured to connect the first parallel connector, the second parallel connector, and the third parallel connector to the output cable, such that the neutral wire and ground wire of the first parallel connector, the second parallel connector, and the third parallel connector are respectively connected to the neutral wire and the ground wire of the cable. The live wire of the first parallel connector is connected to the phase A live wire, the live wire of the second parallel connector is connected to the phase B live wire, and the live wire of the third parallel connector is connected to the phase C live wire.

[0046] In this way, by connecting the three-phase parallel socket to the three-phase live wire, multiple energy storage devices are connected in an orderly parallel manner in the three-phase system, providing stable power support for the three-phase load.

[0047] In some embodiments, the distribution box further includes a single-phase distribution box, and the common output terminal is connected to the single-phase distribution box via the C-phase live wire, the cable neutral wire, and the cable ground wire. The parallel connection device further includes a switching switch configured to switch between a first position and a second position. When the switch is in the first position, the live wire of the first parallel socket is connected to the A-phase live wire, the live wire of the second parallel socket is connected to the B-phase live wire, and the live wire of the third parallel socket is connected to the C-phase live wire. When the switch is in the second position, the live wires of the first parallel socket, the second parallel socket, and the third parallel socket are all connected to the live wire of the same phase, wherein the live wire of the same phase is any one of the A-phase live wire, the B-phase live wire, or the C-phase live wire.

[0048] In this way, the flexible switching between three-phase and single-phase live wire connections is achieved by switching the switch, which improves the adaptability of the device to different power distribution scenarios and enhances the versatility of the equipment.

[0049] In some embodiments, the energy storage system includes a current transformer meter, the distribution box is connected to the power grid through the current transformer meter, the first energy storage device, the second energy storage device, the current transformer meter, and the parallel connection device are connected via a CAN network, and the parallel connection device is connected to a remote user terminal via a wireless network.

[0050] In this way, the combined communication of CAN network and wireless network enables efficient data interaction between the energy storage system and remote terminal, facilitating remote monitoring and fault diagnosis, and improving operation and maintenance efficiency.

[0051] In some embodiments, the energy storage system includes a current transformer meter, the distribution box is connected to the power grid through the current transformer meter, the current transformer meter and the first energy storage device and the second energy storage device are connected via a wireless network, and the first energy storage device and the second energy storage device are connected to a remote user terminal via a wireless network.

[0052] In this way, by integrating current transformer meters with wireless communication, system wiring is simplified, installation costs are reduced, and real-time collection and transmission of electricity consumption information are realized.

[0053] In some embodiments, the distribution box is a three-phase distribution box, and the energy storage system further includes a third energy storage device. The third energy storage device includes a third grid connection port, and the parallel connection device further includes a third parallel socket. The third grid connection port is configured to be electrically connected to the third parallel socket via a third pluggable connector. The third parallel socket, the first parallel socket, and the second parallel socket are connected in parallel to the common output terminal inside the parallel connection device. The first energy storage device, the second energy storage device, and the third energy storage device are designated as one master and two slave devices. The master and the slave devices include a battery energy management system. The battery energy management system of the master is configured to determine the power distribution result based on the current electricity consumption information of the household three-phase circuit detected by the current transformer meter and the output power on the three phases of the power grid, so as to balance the power on the three phases of the household three-phase circuit. The battery energy management system of the master and the slave devices is configured to control the output power of the master and the slave devices accordingly based on the power distribution result.

[0054] In this way, through the coordinated control of the master and slave battery energy management systems, the power balance of the three-phase circuit is achieved, avoiding single-phase overload and ensuring the stable operation of the three-phase system.

[0055] In some embodiments, the distribution box is a single-phase distribution box, and the first energy storage device and the second energy storage device are designated as a master and a slave device. The master and the slave device include a battery energy management system. The battery energy management system of the master device is configured to determine a power allocation result based on the current electricity consumption information of the household circuit detected by the current transformer meter and the capacity of the first energy storage device and the second energy storage device, so as to balance the capacity of the first energy storage device and the second energy storage device. The battery energy management system of the master and the slave device is configured to control the output power of the master and the slave device accordingly based on the power allocation result.

[0056] In this way, the capacity balancing control strategy of master and slave machines enables the collaborative operation of multiple energy storage devices, avoiding insufficient or excessive capacity of a single device, and improving the overall economy and reliability of the system.

[0057] 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

[0058] 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:

[0059] Figure 1 This is a circuit diagram of the energy storage system according to an embodiment of this application;

[0060] Figure 2 This is a schematic diagram of a scenario of an energy storage system according to an embodiment of this application;

[0061] Figure 3 This is a wiring diagram of the output cable of the energy storage system according to an embodiment of this application;

[0062] Figure 4 This is a wiring diagram of the output cable of the energy storage system according to an embodiment of this application;

[0063] Figure 5 This is a wiring diagram of the output cable of the energy storage system according to an embodiment of this application;

[0064] Figure 6 This is a wiring diagram of the output cable of the energy storage system according to an embodiment of this application;

[0065] Figure 7 This is a flowchart illustrating the control method of the energy storage system according to an embodiment of this application;

[0066] Figure 8 This is a flowchart illustrating the control method of the energy storage system according to an embodiment of this application.

[0067] Explanation of key component symbols: Energy storage system 100, first energy storage device 10, first grid connection port 11, second energy storage device 20, second grid connection port 21, parallel connection device 30, first parallel connection socket 31, second parallel connection socket 32, common output terminal 33, third parallel connection socket 34, changeover switch 35, third energy storage device 40, third grid connection port 41, distribution box 50, first pluggable connector 60, second pluggable connector 70, third pluggable connector 80, power grid 200, current transformer meter 300, remote user terminal 400. Detailed Implementation

[0068] 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.

[0069] 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.

[0070] 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.

[0071] 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.

[0072] Balcony solar-energy storage systems, as entry-level home energy storage products, are characterized by their small size, modularity, and plug-and-play nature (usually requiring no wiring modifications). However, to meet the ever-increasing electricity demands of households, capacity expansion is typically required.

[0073] The main capacity expansion solutions in related technologies are vertical stacking and horizontal parallel operation. Vertical stacking has a lower capacity limit, while horizontal parallel operation, although capable of expanding capacity to 16-20kWh, requires complex wiring using specialized components such as T-connectors, making it difficult for ordinary users to operate. Once this complex wiring is completed, the system is often fixed, making it difficult for ordinary users to disassemble and modify, severely undermining the product's core attributes of plug-and-play and portability. Even if users have electrical knowledge, they must repeat this cumbersome wiring process every time they bring the energy storage unit back from outdoor use and reconnect it to the system. This not only results in a poor user experience but also poses a safety hazard of electric shock due to frequent wiring operations.

[0074] Therefore, existing technologies lack a solution that can achieve convenient and safe horizontal parallel operation while maintaining the plug-and-play and portable characteristics of balcony solar energy storage systems.

[0075] Please see Figure 1 and Figure 2This application describes an energy storage system 100, including a first energy storage device 10, a second energy storage device 20, and a parallel connection device 30. The first energy storage device 10 includes a first grid connection port 11, the second energy storage device 20 includes a second grid connection port 21, and the parallel connection device 30 includes a first parallel socket 31, a second parallel socket 32, and a common output terminal 33. The first grid connection port 11 is configured to be electrically connected to the first parallel socket 31 via a first pluggable connector 60, and the second grid connection port 21 is configured to be electrically connected to the second parallel socket 32 ​​via a second pluggable connector 70. The first parallel socket 31 and the second parallel socket 32 ​​are connected in the parallel connection device. The first energy storage device 10 and the second energy storage device 20 are connected in parallel to the common output terminal 33, which is configured to be electrically connected to the distribution box 50. When the first grid connection port 11 is connected to the first parallel socket 31 through the first pluggable connector 60, and the second grid connection port 21 is connected to the second parallel socket 32 ​​through the second pluggable connector 70, the first energy storage device 10 and the second energy storage device 20 supply power to the distribution box 50 through the common output terminal 33 to achieve parallel operation. When the first pluggable connector 60 is unplugged from the first parallel socket 31, and / or the second pluggable connector 70 is unplugged from the second parallel socket 32, the first energy storage device 10 and the second energy storage device 20 are decoupled from parallel operation.

[0076] The energy storage system 100 provided in this application can be pre-assembled and connected to the distribution box 50 through the parallel connection device 30, which facilitates the connection with the distribution box 50 when adding an integrated energy storage unit later, reducing installation difficulty and thus reducing costs. In addition, through the modular design of pluggable connectors and parallel sockets, the energy storage equipment can be quickly paralleled and disconnected, which facilitates installation, maintenance and flexible configuration, and reduces the difficulty of system integration.

[0077] Specifically, parallel operation refers to a technical solution that connects multiple energy storage devices (such as the first energy storage device 10, the second energy storage device 20, etc.) in parallel through a specific connection device (such as a parallel connection device 30), allowing them to share a common output terminal 33 and jointly supply power to the power distribution system (such as a single-phase, split-phase, or three-phase distribution box 50). Its core is the modular design of pluggable connectors and parallel sockets, enabling rapid parallel and disconnection of energy storage devices, supporting flexible configuration and maintenance. After multiple energy storage devices are connected in parallel, the total output power and capacity can be superimposed to meet the needs of high-power loads or high-power-demand scenarios (such as household air conditioners, industrial equipment, etc.).

[0078] In this embodiment, the parallel connection device 30 can be pre-fixed near the distribution box 50 or other convenient locations for plugging and unplugging, and its common output terminal 33 is directly connected to the input terminal of the distribution box 50 through a hard wire or prefabricated cable.

[0079] In some embodiments, the first parallel socket 31 and the second parallel socket 32 ​​can be standard industrial sockets, internally connected in parallel via copper busbars to a common output terminal 33. The first grid-connected port 11 of the first energy storage device 10 is inserted into the first parallel socket 31 via a first pluggable connector 60 with pins, and the second grid-connected port 21 of the second energy storage device 20 is inserted into the second parallel socket 32 ​​via a second pluggable connector 70 of the same specification.

[0080] In this embodiment, when both devices are plugged in, their output current is connected in parallel through the first parallel socket 31 and the second parallel socket 32 ​​to the common output terminal 33, which together supply power to the distribution box 50; if the connector of any device is unplugged, the device is disconnected from the parallel circuit, and the remaining devices continue to be powered independently through the common output terminal 33.

[0081] Please see Figure 1 and Figure 3 In some embodiments, the distribution box 50 is a single-phase distribution box 50, and the energy storage system 100 also includes an output cable. The common output terminal 33 is electrically connected to the single-phase distribution box 50 through the output cable. The output cable includes a live wire, a neutral wire, and a ground wire. The first parallel socket 31 and the second parallel socket 32 ​​are respectively connected to the live wire, neutral wire, and ground wire of the output cable through the common output terminal 33.

[0082] In this way, by directly connecting the output cable to the live wire, neutral wire, and ground wire of the single-phase distribution box 50, compatibility with the single-phase power supply system is achieved, ensuring safe and reliable power supply in single-phase scenarios.

[0083] Specifically, in some embodiments, when the distribution box 50 is a single-phase distribution box 50, the parallel connection device 30 of the energy storage system 100 establishes an electrical connection with the single-phase distribution box 50 through an output cable, and the live wire, neutral wire, and ground wire of the output cable are respectively connected to the corresponding terminals of the distribution box 50. After the first parallel connection port 31 and the second parallel connection port 32 are connected in parallel inside the parallel connection device 30, their live wire end is connected to the live wire of the output cable, their neutral wire end is connected to the neutral wire of the output cable, and their ground wire end is connected to the ground wire of the output cable.

[0084] When the first energy storage device 10 and the second energy storage device 20 are connected to their corresponding parallel sockets via pluggable connectors, their output current is collected by the common output terminal 33 and then directly transmitted to the single-phase distribution box 50 through the output cable, realizing parallel power supply in a single-phase power supply scenario. In this way, standardized cable connections simplify the complexity of on-site wiring while ensuring reliable separation of the live wire, neutral wire, and ground wire, reducing safety risks caused by wiring errors in a single-phase system.

[0085] Please see Figure 1 and Figure 4In some embodiments, the distribution box 50 is a split-phase distribution box 50, and the energy storage system 100 also includes an output cable. The common output terminal 33 is electrically connected to the split-phase distribution box 50 through the output cable. The output cable includes an L1 live wire, an L2 live wire, a cable neutral wire, and a cable ground wire. The common output terminal 33 is configured to connect the first parallel socket 31 and the second parallel socket 32 ​​to the output cable, so that the neutral wire and the ground wire of the first parallel socket 31 and the second parallel socket 32 ​​are respectively connected to the cable neutral wire and the cable ground wire. The live wire of the first parallel socket 31 is connected to the L1 live wire, and the live wire of the second parallel socket 32 ​​is connected to the L2 live wire.

[0086] In this way, by connecting the L1 and L2 live wires, the common neutral wire, and the ground wire of the split-phase distribution box 50 through the parallel socket, support for the split-phase power distribution system is realized, adapting to different regional power distribution standards and expanding the application scenarios.

[0087] Specifically, in some embodiments, when the distribution box 50 is a split-phase distribution box 50, the output cable of the parallel connection device 30 includes an L1 live wire, an L2 live wire, a neutral wire, and a ground wire. The live wire end of the first parallel socket 31 is connected to the L1 live wire, and the live wire end of the second parallel socket 32 ​​is connected to the L2 live wire, while the neutral and ground wire ends of both are connected to the neutral wire and the ground wire, respectively.

[0088] When the first energy storage device 10 and the second energy storage device 20 are connected, their output current is transmitted to the split-phase distribution box 50 through the L1 live wire and the L2 live wire, respectively, forming a split-phase power supply structure. In this way, the energy storage system 100 can be adapted to split-phase power distribution standards, such as 120V / 240V split-phase systems. By independently controlling the output power of the two live wires, it can meet the dual-wire power supply requirements of high-power loads in household electricity use in North America and other regions, while maintaining the common reference point of the neutral wire and the ground wire consistent, ensuring the reliability of system grounding.

[0089] Please see Figure 1 and Figure 5In some embodiments, the distribution box 50 is a three-phase distribution box 50. The energy storage system 100 also includes a third energy storage device 40 and output cables. The third energy storage device 40 includes a third grid connection port 41. The parallel connection device 30 also includes a third parallel connection socket 34. The third grid connection port 41 is configured to be electrically connected to the third parallel connection socket 34 via a third pluggable connector 80. The third parallel connection socket 34, the first parallel connection socket 31, and the second parallel connection socket 32 ​​are connected in parallel to a common output terminal 33 inside the parallel connection device 30. The common output terminal 33 is connected to the three-phase power distribution system via output cables. Box 50 is electrically connected, and the output cable includes A-phase live wire, B-phase live wire, C-phase live wire, cable neutral wire, and cable ground wire. The common output terminal 33 is configured to connect the first parallel connector 31, the second parallel connector 32, and the third parallel connector 34 to the output cable, so that the neutral wire and ground wire of the first parallel connector 31, the second parallel connector 32, and the third parallel connector 34 are respectively connected to the cable neutral wire and the cable ground wire. The live wire of the first parallel connector 31 is connected to the A-phase live wire, the live wire of the second parallel connector 32 is connected to the B-phase live wire, and the live wire of the third parallel connector 34 is connected to the C-phase live wire.

[0090] Thus, by connecting the third energy storage device 40 and the three-phase live wire, multiple devices in parallel under the three-phase power distribution system are realized, expanding the system capacity and meeting the needs of high-power loads or three-phase balanced power supply.

[0091] Specifically, in some embodiments, when the distribution box 50 is a three-phase distribution box 50, the parallel connection device 30 extends the third parallel socket 34 to support the third energy storage device 40. The output cable includes an A-phase live wire, a B-phase live wire, a C-phase live wire, a neutral wire, and a ground wire. The live wire end of the first parallel socket 31 is connected to the A-phase live wire, the live wire end of the second parallel socket 32 ​​is connected to the B-phase live wire, the live wire end of the third parallel socket 34 is connected to the C-phase live wire, and the neutral wire end and the ground wire end are connected to the neutral and ground wires of the cable.

[0092] Please see Figure 2 When the first energy storage device 10, the second energy storage device 20, and the third energy storage device 40 are connected via the first pluggable connector 60, the second pluggable connector 70, and the third pluggable connector 80, respectively, their output current is aggregated to the corresponding live wire according to phase, forming a three-phase power supply structure. Furthermore, through modular expansion, the number of energy storage devices can be increased according to load requirements. Each live wire can independently carry a portion of the load, achieving a balanced distribution of the three-phase load. This is particularly suitable for symmetrical power supply of three-phase air conditioners, motors, and other equipment in industrial sites or large residential buildings, avoiding single-phase overload problems.

[0093] Please see Figure 1 , Figure 2 and Figure 6In some embodiments, the distribution box 50 further includes a single-phase distribution box 50, with the common output terminal 33 connected to the single-phase distribution box 50 via a C-phase live wire, a neutral wire, and a ground wire. The parallel connection device 30 further includes a switching switch 35 configured to switch between a first position and a second position. When the switch is in the first position, the live wire of the first parallel socket 31 is connected to the A-phase live wire, the live wire of the second parallel socket 32 ​​is connected to the B-phase live wire, and the live wire of the third parallel socket 34 is connected to the C-phase live wire. When the switch is in the second position, the live wires of the first parallel socket 31, the second parallel socket 32, and the third parallel socket 34 are all connected to the live wire of the same phase, wherein the live wire of the same phase is any one of the A-phase live wire, the B-phase live wire, or the C-phase live wire.

[0094] In this way, switching between three-phase live wire connection mode and single-phase live wire connection mode can be achieved by switching switch 35, which improves the system's adaptability to single-phase / three-phase power distribution scenarios and enhances the reusability of equipment.

[0095] Specifically, in some embodiments, the parallel connection device 30 has a built-in switch 35 to adjust the live wire connection path. The switch 35 can be controlled by a physical switch or software, or both.

[0096] For example, when the switch is in three-phase mode, the live wire of the first parallel connector 31 is connected to the A-phase live wire, the live wire of the second parallel connector 32 is connected to the B-phase live wire, and the live wire of the third parallel connector 34 is connected to the C-phase live wire, thus achieving phase-by-phase connection; when switching to single-phase mode, the live wires of the first parallel connector 31, the second parallel connector 32, and the third parallel connector 34 are all connected to the C-phase live wire, achieving single-phase high-capacity power supply.

[0097] In some embodiments, the first pluggable connector 60 is fixedly connected to the first parallel port 31 by a snap-fit ​​or threaded connection, and the second pluggable connector 70 is fixedly connected to the second parallel port 32 by a snap-fit ​​or threaded connection.

[0098] In this way, by securing the pluggable connector with snaps or threads, the system meets the requirements while avoiding poor contact caused by loose connections, thus improving the stability and safety of parallel connections.

[0099] Specifically, in some embodiments, the first pluggable connector 60 and the first parallel port 31 adopt a snap-fit ​​structure, which is suitable for scenarios involving frequent plugging and unplugging. For example, the housing of the first pluggable connector 60 may be provided with an elastic snap-fit, and a corresponding slot may be provided at the first parallel port 31, so that the snap-fit ​​automatically locks after insertion.

[0100] In some embodiments, the first pluggable connector 60 and the first parallel port 31 can be connected by a threaded connection, which is suitable for scenarios requiring long-term fixed connection. For example, the outer wall of the first pluggable connector 60 is provided with an external thread, and the inner wall of the first parallel port 31 is provided with an internal thread, achieving fixation by rotation.

[0101] In some embodiments, the third pluggable connector 80 is also fixedly connected to the third parallel port 34 by a snap-fit ​​or threaded connection.

[0102] In some embodiments, the first pluggable connector 60 and the first parallel socket 31, the second pluggable connector 70 and the second parallel socket 32, and the third pluggable connector 80 and the third parallel socket 34 can be fixed in the same way or in different ways. Users can choose the appropriate connector type according to their actual needs, balancing installation efficiency and operational reliability; further details are omitted here.

[0103] In some embodiments, the energy storage system 100 includes a current transformer meter 300, the distribution box 50 is connected to the power grid 200 through the current transformer meter 300, the first energy storage device 10, the second energy storage device 20, the current transformer meter 300 and the parallel connection device 30 are connected via a CAN network, and the parallel connection device 30 is connected via a wireless network to a remote user terminal 400.

[0104] In this way, by combining CAN network and wireless network communication, real-time data interaction between energy storage device, parallel connection device 30, current transformer meter 300 and remote terminal is realized, which facilitates centralized monitoring and remote control and improves the intelligence level of the system.

[0105] Specifically, in some embodiments, the current transformer meter 300, the first energy storage device 10, and the second energy storage device 20 all have built-in wireless communication modules, forming a wireless sensor network through a self-organizing network. The current transformer meter 300 transmits the detected household electricity consumption data to the first energy storage device 10 and the second energy storage device 20 via a wireless link. The first energy storage device 10 and the second energy storage device 20 also exchange information such as capacity and voltage wirelessly. The remote user terminal 400 establishes a connection with the energy storage devices via the Internet, realizing cross-regional control. In this way, CAN bus wiring is eliminated, reducing installation costs, which is especially suitable for already renovated residences or scenarios where wiring is difficult. The low power consumption of wireless communication also extends the device's battery life, but attention must be paid to the coverage range and anti-interference capability of the wireless signal to ensure the stability of data transmission.

[0106] In some embodiments, the energy storage system 100 includes a current transformer meter 300, the distribution box 50 is connected to the power grid 200 through the current transformer meter 300, the current transformer meter 300 and the first energy storage device 10 and the second energy storage device 20 are connected via wireless network communication, and the first energy storage device 10 and the second energy storage device 20 are connected to the remote user terminal 400 via wireless network communication.

[0107] Thus, by integrating the current transformer meter 300 with wireless communication, real-time synchronization of electricity consumption information and energy storage device status is achieved, simplifying wiring complexity and reducing installation costs.

[0108] Specifically, in some embodiments, the current transformer meter 300 can also establish a star network with the communication modules of the first energy storage device 10 and the second energy storage device 20 via a wireless module. The current transformer meter 300 collects power supply data (such as voltage and frequency) from the power grid 200 and the total household load power in real time, and sends data packets to the two energy storage devices every 5 seconds.

[0109] For example, the first energy storage device 10 can act as a host, integrating meter data with the remaining capacity information collected by its slave devices, and then uploading it to the cloud platform via its built-in wireless module; the remote user terminal 400 can access the cloud data through an APP to achieve remote monitoring. When adding a new energy storage device, it only needs to be added to the same network group (by entering the preset network ID and key), without the need for additional wiring.

[0110] Please see Figure 1 , Figure 3 and Figure 6 In some embodiments, the distribution box 50 is a single-phase distribution box 50, and the first energy storage device 10 and the second energy storage device 20 are designated as a master and a slave device. The master and the slave device include a battery energy management system. The battery energy management system of the master device is configured to determine the power distribution result based on the current household circuit power consumption information detected by the current transformer meter 300 and the capacity of the first energy storage device 10 and the second energy storage device 20, so as to balance the capacity of the first energy storage device 10 and the second energy storage device 20. The battery energy management system of the master and the slave device is configured to control the output power of the master and the slave device according to the power distribution result.

[0111] In this way, by using a balanced control strategy based on single-phase power consumption information and equipment capacity, the host achieves capacity coordination of multiple energy storage devices, avoids over-discharge / over-charging of a single device, and improves the overall utilization rate of the system.

[0112] Specifically, in some embodiments, the master and slave devices can be designated in the first energy storage device 10 and the second energy storage device 20 through a remote user terminal 400. In some embodiments, the master and slave devices can also be designated through interaction between the first energy storage device 10 and the second energy storage device 20.

[0113] For example, when the system designates the first energy storage device 10 as the host, the battery energy management system of the first energy storage device 10 receives the single-phase power consumption detected by the current transformer meter 300 via wireless communication, and monitors its own and the remaining capacity of the second energy storage device 20. The host's battery energy management system dynamically adjusts the output power of the first energy storage device 10 and the second energy storage device 20 according to the total load power and the capacity ratio of the first energy storage device 10 and the second energy storage device 20.

[0114] For example, if the total load is 8kW, the first energy storage device 10 has 60% remaining capacity, and the second energy storage device 20 has 40% remaining capacity, the host's battery energy management system can allocate 4.8kW output from the first energy storage device 10 and 3.2kW output from the second energy storage device 20, ensuring that their capacity decreases at the same rate. When the capacity of either device falls below a threshold, the host's battery energy management system can activate a charging strategy, prioritizing charging the low-capacity device, or adjusting the load distribution to avoid over-discharge. In this way, through centralized calculation by the host and execution by the slave devices, the system ensures synchronized capacity consumption when multiple devices are operating in parallel, improving the overall effective capacity utilization of the system and preventing the premature retirement of a single device due to overuse.

[0115] Please see Figure 7 This application also provides a control method for an energy storage system 100, the control method including:

[0116] Step 001: Designate the first energy storage device 10 and the second energy storage device 20 as the master and slave devices, respectively;

[0117] Step 002: Obtain the electricity consumption information of the household circuit and the capacity of the first energy storage device 10 and the second energy storage device 20;

[0118] Step 003: Allocate the power of the first energy storage device 10 and the second energy storage device 20 according to the electricity consumption information and the capacity of the first energy storage device 10 and the second energy storage device 20, so as to balance the capacity of the first energy storage device 10 and the second energy storage device 20.

[0119] In this way, by designating master and slave units and allocating power based on electricity consumption information and equipment capacity, dynamic load balancing is achieved, adapting to fluctuations in household electricity consumption and ensuring stable system operation.

[0120] For example, in some embodiments, the energy storage system 100 also includes a controller. During the initialization of the energy storage system 100, the controller automatically designates the first energy storage device 10 with the smaller device ID serial number as the master and the second energy storage device 20 as the slave, based on the device ID serial number. The master device obtains the total load power of the household circuit in real time through the current transformer meter 300, and simultaneously collects the remaining capacity of itself and the slave devices every 10 seconds via the CAN bus. When the difference in remaining capacity between the two devices exceeds 5% (e.g., master device remaining capacity = 80%, slave device remaining capacity = 70%), the master device's battery energy management system initiates a dynamic allocation algorithm, prioritizing the device with the higher remaining capacity to bear more load. For example, a total load of 3.5kW is allocated in a 6:4 ratio (master device output 2.1kW, slave device output 1.4kW), allowing the device with the higher remaining capacity to discharge faster, gradually reducing the capacity difference. If the household load suddenly increases to 5kW, the proportional allocation is maintained while meeting electricity demand until the difference in remaining capacity returns to within the ±5% threshold.

[0121] Please see Figure 1 , Figure 5 and Figure 6 In some embodiments, the distribution box 50 is a three-phase distribution box 50, and the energy storage system 100 further includes a third energy storage device 40. The third energy storage device 40 includes a third grid connection port 41, and the parallel connection device 30 further includes a third parallel connection socket 34. The third grid connection port 41 is configured to be electrically connected to the third parallel connection socket 34 via a third pluggable connector 80. The third parallel connection socket 34, the first parallel connection socket 31, and the second parallel connection socket 32 ​​are connected in parallel to a common output terminal 33 within the parallel connection device 30. 10. The second energy storage device 20 and the third energy storage device 40 are designated as one master and two slave devices. The master and slave devices include a battery energy management system. The battery energy management system of the master device is configured to determine the power distribution result based on the current electricity consumption information of the household three-phase circuit detected by the current transformer meter 300 and the output power on the three phases of the power grid 200, so as to balance the power on the three phases of the household three-phase circuit. The battery energy management systems of the master and slave devices are configured to control the output power of the master and slave devices respectively according to the power distribution result.

[0122] In this way, by using the host to balance the power of the three-phase circuit based on the three-phase power consumption information and the power grid's 200 kW power balance strategy, the power balance of the three-phase circuit is achieved, avoiding single-phase overload, extending equipment life and improving power supply quality.

[0123] Specifically, in some embodiments, a remote user terminal 400 can designate one master and two slave devices among the first energy storage device 10, the second energy storage device 20, and the third energy storage device 40. In some embodiments, the first energy storage device 10, the second energy storage device 20, and the third energy storage device 40 can also interact to designate one master and two slave devices.

[0124] In some embodiments, when the system designates the first energy storage device 10 as the master, its battery energy management system receives three-phase power consumption data detected by the current transformer meter 300 and the three-phase output power of the power grid 200 via the CAN bus. The master battery energy management system calculates the required compensation power value for each phase based on the real-time power demand of the three-phase load, and considers the remaining capacity of each energy storage device to generate a power allocation command. Upon receiving the command, the slave battery energy management system adjusts its own output current to balance the total output power of the three-phase live wires.

[0125] Please see Figure 8 In some embodiments, the control method further includes:

[0126] Step 004: Designate one of the first energy storage device 10, the second energy storage device 20, and the third energy storage device 40 as the master device, and the rest as slave devices;

[0127] Step 005: Obtain the electricity consumption information of the household circuit and the output power of the three phases of the power grid;

[0128] Step 006: Based on the electricity consumption information and the output power of the three phases of the power grid 200, allocate the power of the first energy storage device 10, the second energy storage device 20, and the third energy storage device 40 to balance the power of the three phases of the household three-phase circuit.

[0129] In this way, through the master-slave control and power distribution of the three-phase energy storage device, the power balance of the three-phase circuit is achieved, the symmetrical power supply requirements of the three-phase load are met, and the power quality is improved.

[0130] In some embodiments, the energy storage system 100 also includes a controller. During initialization of the energy storage system 100, the controller automatically designates the first energy storage device 10 as the master, and the second and third energy storage devices 20 and 40 as slaves based on device serial number priority. The master acquires real-time three-phase output power data from the power grid 200 via a current transformer meter 300, and simultaneously calculates the total three-phase load power of the household. The master's built-in battery energy management system calculates the three-phase power deviation rate. When the maximum deviation exceeds a preset value (e.g., ±5%), a dynamic compensation strategy is activated, prioritizing the output of energy storage devices with lower power phases while suppressing the output increase of higher power phases.

[0131] For example, in a three-phase household circuit, the power grid outputs 5kW to phase A, 5kW to phase B, and 6kW to phase C, for a total load of 16kW. At this point, the load on phase C is 1kW higher than that on phases A and B, causing a three-phase imbalance. To balance the power, a 1kW output from an energy storage system 100 on phase C can compensate. Specifically, the energy storage system 100 outputs 1kW from the phase C wire, so the power grid only needs to output 5kW to meet the 6kW load demand of phase C (1kW from the energy storage system 100 on phase C, and 5kW from the grid's output to phase C). At this point, the grid's output to phases A, B, and C is all 5kW, achieving power balance across the three phases.

[0132] This application also provides a computer-readable storage medium for storing a computer program. This computer-readable storage medium can be applied to a computer device, and the computer program causes the computer device to execute corresponding processes in the control method of the energy storage system in the embodiments of this application; for brevity, these will not be elaborated further here.

[0133] This application also provides a computer program product including computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the corresponding flow in the control method of the energy storage system in the embodiments of this application. For simplicity, further details are omitted here.

[0134] This application also provides a computer program comprising computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform the corresponding flow in the control method of the energy storage system of this application. For brevity, further details are omitted here.

[0135] It should be understood that the processor in this application may be an integrated circuit chip with signal processing capabilities. In implementation, the steps of the above method embodiments can be completed by integrated logic circuits in the processor's hardware or by instructions in software form. The processor described above can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied in the execution of a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method.

[0136] It is understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as Static Random Access Memory (SRAM), Dynamic Random Access Memory (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDR SDRAM), Enhanced Synchronous DRAM (ESDRAM), Synchlink DRAM (SLDRAM), and Direct Rambus RAM (DR RAM). It should be noted that the memory used in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0137] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0138] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0139] In this application embodiment, the terms "module" or "unit" refer to a computer program or part of a computer program that has a predetermined function and works with other related parts to achieve a predetermined goal, and can be implemented wholly or partially using software, hardware (such as processing circuitry or memory), or a combination thereof. Similarly, a processor (or multiple processors or memory) can be used to implement one or more modules or units. Furthermore, each module or unit can be part of an overall module or unit that includes the functionality of that module or unit.

[0140] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0141] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0142] In addition, the functional units in this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0143] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a portion of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer or a server) to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, ROM, RAM, magnetic disks, or optical disks.

[0144] 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.

[0145] 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.

[0146] 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.

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