Household energy storage system control method and household energy storage device

Abstract

The application discloses a household energy storage system control method and a household energy storage device. The household energy storage system control method comprises the following steps: a trigger instruction is a connection instruction, a main control battery control circuit and an outdoor battery control circuit are simultaneously operated, after a household energy storage unit and an outdoor energy storage unit reach a preset condition, the outdoor battery control circuit is closed, the outdoor energy storage unit is connected to the household energy storage unit as a capacity storage structure, the capacity of the household energy storage unit is increased, and then more use scenarios can be met, and the utilization rate is improved; a trigger instruction is a split instruction, a main control battery control circuit and an outdoor battery control circuit are simultaneously operated, after a preset separation condition is reached, the outdoor energy storage unit is independent, and the condition that the outdoor energy storage unit is needed is met. The control method can realize the connection or disconnection of the outdoor energy storage unit in the household energy storage unit, so that the user can select the use mode according to the need, and the flexibility of the household energy storage system is improved.

Description

Technical Field

[0001] This application relates to the field of energy storage products, and in particular to a control method for a residential energy storage system and related residential energy storage equipment. Background Technology

[0002] With the increasing popularity of green concepts and rising energy prices worldwide, people's demand for new energy products is also growing. Electricity, as the most common new energy source, has broad market demand.

[0003] To facilitate portability and extend battery life, energy storage devices are becoming increasingly popular in the market. Currently, energy storage devices can be broadly categorized into indoor and outdoor energy storage devices based on demand. Indoor energy storage products are designed as an integrated unit, fixed in a specific location and connected to the household power grid to meet the user's energy consumption and other needs indoors. Outdoor products are smaller in size and suitable for users' short-term power needs outdoors.

[0004] However, current indoor and outdoor energy storage devices are installed independently for residential use, often requiring users to purchase both indoor and outdoor storage devices simultaneously, thus increasing costs. Furthermore, outdoor energy storage products are used in fewer scenarios and are mostly idle, failing to be fully utilized. Summary of the Invention

[0005] This application provides a control method for a residential energy storage system and a residential energy storage device. This addresses the problems of low utilization rates of outdoor energy storage products and small capacity of indoor energy storage products.

[0006] In a first aspect, this application provides a control method for a residential energy storage system. The residential energy storage system includes indoor energy storage units and outdoor energy storage units that can be connected or disconnected from each other. The indoor energy storage unit includes a main control battery control circuit, and the outdoor energy storage unit includes an outdoor battery control circuit. The control method includes: acquiring a trigger command; in response to the trigger command being a connection command, the main control battery control circuit and the outdoor battery control circuit operate simultaneously and establish a communication connection; after the outdoor energy storage unit and the indoor energy storage unit meet a preset connection condition, the outdoor battery control circuit shuts down; in response to the trigger command being a disconnect command, the main control battery control circuit and the outdoor battery control circuit operate simultaneously, and after the outdoor energy storage unit and the indoor energy storage unit meet a preset disconnection condition, the main control battery control circuit and the outdoor battery control circuit disconnect.

[0007] The residential energy storage system has a preset standard safety state. After the outdoor energy storage unit and the indoor energy storage unit meet the preset conditions for connection, the outdoor battery control circuit is shut down, including: acquiring the safety detection status of the main control battery control circuit and the outdoor battery control circuit; in response to the standard that both the main control battery control circuit and the outdoor battery control circuit have reached the standard safety state, the main control battery control circuit collects data from the outdoor battery control circuit; after running for a preset time, the outdoor battery control circuit is shut down; and the indoor energy storage unit and the outdoor energy storage unit are connected in parallel.

[0008] The outdoor energy storage unit is preset with a standard safety state. After the outdoor energy storage unit and the indoor energy storage unit reach the preset disconnection conditions, the main control battery control circuit and the outdoor battery control circuit are disconnected, including: acquiring the safety detection status of the outdoor energy storage unit; responding to the outdoor energy storage unit's safety detection status reaching the standard safety state, the main control battery control circuit and the outdoor battery control circuit are disconnected; and the indoor energy storage unit and the outdoor energy storage unit are separated.

[0009] The process of obtaining trigger commands includes: manually pressing the confirmation button; and sending the corresponding trigger command based on the operation status of the confirmation button.

[0010] The control method also includes providing visual prompts based on the trigger command.

[0011] The visual prompts include any one or more of lights, sounds, or text patterns; based on the trigger command, the system executes any one or more states of lights, sounds, or text patterns corresponding to the trigger command.

[0012] Before manually confirming the operation of the button, the process also includes: triggering a micro switch to obtain an initial trigger signal.

[0013] The control method also includes visually prompting the connection or disconnection process and results through lights. Specifically, during the connection or disconnection of the outdoor energy storage unit, the lights flash in a first color state; after the outdoor energy storage unit is successfully connected or disconnected, the lights flash in a second color state; and when the outdoor energy storage unit is not connected to the indoor energy storage unit, the lights flash in a third color state.

[0014] A second aspect of this application provides a residential energy storage device, comprising: an indoor energy storage unit and an outdoor energy storage unit, wherein the indoor energy storage unit includes a main control battery control circuit, and the outdoor energy storage unit includes an outdoor battery control circuit; the indoor energy storage unit includes a housing cavity, and the housing cavity is provided with an interface terminal, wherein the outdoor energy storage unit can be installed into the housing cavity and electrically connected to the interface terminal, or removed from the housing cavity and electrically disconnected from the interface terminal; the residential energy storage device also includes a controller, the controller being connected to the interface terminal, wherein when the indoor energy storage unit and the outdoor energy storage unit are interconnected, the main control battery control circuit and the outdoor battery control circuit are both electrically connected to the controller through the interface terminal, and the controller controls the outdoor battery control circuit to shut down when detecting a connection.

[0015] The cavity also includes a microswitch, which is connected to the controller; when the outdoor energy storage unit and the indoor energy storage unit are connected to each other, they abut against the microswitch.

[0016] The indoor energy storage unit also includes a confirmation button and indicator lights. The confirmation button is connected to both the controller and the indicator lights. There are two indicator lights, which correspond to the pressed or released state of the confirmation button.

[0017] The indoor energy storage unit also includes at least one indicator light, which is connected to the controller and displays different states of the indoor energy storage device according to the controller's settings.

[0018] The outdoor energy storage unit is equipped with a handle.

[0019] The outdoor energy storage unit also contains a battery, which is connected to the outdoor battery control circuit.

[0020] The aforementioned control method for residential energy storage systems involves acquiring a trigger command. In response to a connection command, the main control battery circuit and the outdoor battery control circuit operate simultaneously and establish a communication connection. Once the outdoor and indoor energy storage units meet the preset connection conditions, the outdoor battery control circuit shuts down. At this point, the outdoor energy storage unit is integrated into the indoor energy storage unit as a capacity storage structure, increasing the capacity of the indoor energy storage unit and thus meeting more usage scenarios and improving utilization. Conversely, when the trigger command is a separation command, the main control battery circuit and the outdoor battery control circuit operate simultaneously. Once the outdoor and indoor energy storage units meet the preset separation conditions, the main control battery control circuit and the outdoor battery control circuit disconnect. At this point, the outdoor and indoor energy storage units can be separated, allowing users to use the outdoor energy storage unit independently. This control method enables the integration or disassembly of the outdoor energy storage unit into the indoor energy storage unit, allowing users to choose the usage method according to their needs and improving the flexibility of the residential energy storage system. Attached Figure Description

[0021] Figure 1 This is a flowchart illustrating an embodiment of the residential energy storage system control method of this application, wherein the control method includes steps S1, S11 and S12. Figure 2 yes Figure 1 A flowchart illustrating an embodiment of step S11 described above; Figure 3 yes Figure 1 A flowchart illustrating an embodiment of step S12 described above; Figure 4 yes Figure 1 A flowchart illustrating an embodiment of step S1 described above; Figure 5 This is an exploded structural diagram of an embodiment of the residential energy storage device of this application; Figure 6 This application Figure 5 Assembly diagram; Figure 7 yes Figure 6 Right view diagram before assembly. Detailed Implementation

[0022] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0023] In the following description, specific details such as particular system architectures, interfaces, and technologies are presented for illustrative purposes rather than for limiting purposes, in order to provide a thorough understanding of this application.

[0024] In this paper, the terms "system," "unit," and "network" are often used interchangeably. The term "and / or" describes the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Additionally, the character " / " generally indicates that the preceding and following related objects have an "or" relationship. Furthermore, "many" in this paper means two or more.

[0025] Please see Figure 1 , Figure 1This is a flowchart illustrating an embodiment of the residential energy storage system control method of this application. The control method includes steps S1, S11, and S12. The residential energy storage system includes indoor energy storage units and outdoor energy storage units that can be connected or separated from each other. The indoor energy storage unit includes a main control battery control circuit, and the outdoor energy storage unit includes an outdoor battery control circuit. Specifically, it may include the following steps: Step S1: Obtain the trigger command.

[0026] The trigger command is used to indicate the connection relationship between the outdoor energy storage unit and the indoor energy storage unit. Specifically, the command is triggered by whether the outdoor energy storage unit and the indoor energy storage unit are connected.

[0027] In one implementation scenario, if the outdoor energy storage unit and the indoor energy storage unit are connected from a non-electrical connection to an electrical connection, a trigger command is generated, indicating that the outdoor energy storage unit and the indoor energy storage unit are connected in parallel. Similarly, if the outdoor energy storage unit and the indoor energy storage unit are connected from an electrical connection to a non-electrical connection, the trigger command generated in this case indicates that the outdoor energy storage unit and the indoor energy storage unit are disconnected.

[0028] Step S11: In response to the trigger command being a parallel connection command, the main control battery control circuit and the outdoor battery control circuit operate simultaneously and establish a communication connection.

[0029] When the trigger command is a parallel connection command, it means that the outdoor energy storage unit is installed into the indoor energy storage unit. At this time, there is an electrical connection between the outdoor energy storage unit and the indoor energy storage unit, and the main control battery control circuit and the outdoor battery control circuit are connected.

[0030] Specifically, the main control battery control circuit and the outdoor battery control circuit operate simultaneously. The main control battery control circuit measures the amount of charge in the outdoor battery control circuit and conducts charge transfer when the charge amounts in the two circuits differ significantly, so that the charge amounts in the two circuits reach a certain level of stability, thereby establishing a communication connection.

[0031] After establishing a communication connection, once the outdoor energy storage unit and the indoor energy storage unit meet the preset conditions for connection, the outdoor battery control circuit is shut down.

[0032] Step S12: In response to the trigger command being a split command, the main control battery control circuit and the outdoor battery control circuit operate simultaneously. After the outdoor energy storage unit and the indoor energy storage unit reach the preset disconnection conditions, the main control battery control circuit and the outdoor battery control circuit disconnect.

[0033] Specifically, when the trigger command is a split command, it means that the outdoor energy storage unit is to be detached from the indoor energy storage unit. At this time, the main control battery control circuit controls the outdoor battery control circuit to start working and sends a signal to the outdoor battery control circuit. At this time, the main control battery control circuit and the outdoor battery control circuit operate simultaneously.

[0034] Afterwards, the outdoor battery control circuit confirms that the outdoor energy storage unit is in a safe state. Once the preset state is reached, the main control battery control circuit and the outdoor battery control circuit are disconnected, and the communication connection between the main control battery control circuit and the outdoor battery control circuit is also disconnected.

[0035] The residential energy storage system control method of this application, upon receiving a trigger command, responds to a connection command by simultaneously operating the main control battery control circuit and the outdoor battery control circuit, establishing a communication connection. After the outdoor energy storage unit and the indoor energy storage unit meet the preset connection conditions, the outdoor battery control circuit shuts down, and the outdoor energy storage unit, acting as a capacity storage structure, is integrated into the indoor energy storage unit, increasing its capacity and thus meeting more usage scenarios and improving utilization. Responding to a separation command, the main control battery control circuit and the outdoor battery control circuit operate simultaneously, and after the outdoor energy storage unit and the indoor energy storage unit meet the preset separation conditions, the main control battery control circuit and the outdoor battery control circuit disconnect, separating the outdoor energy storage unit from the indoor energy storage unit to meet situations where the outdoor energy storage unit is needed. This control method allows for the integration or disassembly of the outdoor energy storage unit into the indoor energy storage unit, enabling users to choose the usage method according to their needs and improving the flexibility of the residential energy storage system.

[0036] In some implementation scenarios, in order to ensure the safe use and integration of outdoor and indoor energy storage units during the integration process, residential energy storage systems are pre-set with standard safety states.

[0037] In some implementation scenarios, this standard safety status is used to indicate that the charge balancing operation inside the residential energy storage system has been completed and the next step can be carried out, such as incorporating the outdoor energy storage unit into the indoor energy storage unit.

[0038] Please refer to Figure 2 , Figure 2 yes Figure 1 The flowchart of one embodiment of step S11 described above is shown. Specifically, in step S11, after the outdoor energy storage unit and the indoor energy storage unit meet the preset conditions for connection, the process of shutting down the outdoor battery control circuit includes the following steps.

[0039] Step S111: Obtain the safety detection status of the main control battery control circuit and the outdoor battery control circuit.

[0040] At this point, the main control battery control circuit and the outdoor battery control circuit have established a communication connection. Therefore, the main control battery control circuit can determine whether the internal connections of the main control battery control circuit and the outdoor battery control circuit are standardized and safe, and determine the connection status of the battery and the high-voltage line of the outdoor battery control circuit. By comprehensively judging whether the two have reached the standard safety state, if they have, the next step can be carried out, such as connecting the outdoor energy storage unit to the indoor energy storage unit. If the standard safety state has not been reached, the electrical connection is continued to perform equalization data and circuit confirmation until the safety state is reached.

[0041] Step S112: In response to the standard safety status being met by both the main control battery control circuit and the outdoor battery control circuit, communication between them begins after the standard installation status is reached. The main control battery control circuit then takes the lead in controlling both circuits and proceeds to data acquisition in the next step.

[0042] Step S113: The main control battery control circuit acquires data from the outdoor battery control circuit. In some embodiments, the main control battery control circuit controls both the main control battery control circuit and the outdoor battery control circuit, and the communication connection between the two circuits operates to obtain the charge values ​​between the main control battery control circuit and the outdoor battery control circuit, and determine the difference between them.

[0043] Step S114: After a preset time, the outdoor battery control circuit is shut down, and the indoor and outdoor energy storage units are connected in parallel. When the charge difference between the main control battery control circuit and the outdoor battery control circuit is obtained in step S113, within a preset time, an external circuit is connected to charge the main control battery control circuit and the outdoor battery control circuit, or to perform charge balancing between them. The charge difference is then judged multiple times. After the charge balance is achieved within the preset time, the outdoor battery control circuit is shut down. At this time, the outdoor energy storage unit only serves as a capacity space, increasing the energy capacity of the indoor energy storage unit.

[0044] Understandably, when an outdoor energy storage unit is removed from an indoor energy storage unit, it needs to be able to function independently as an energy storage structure. This requires defining and setting standard safety conditions for the outdoor energy storage unit to ensure its safe and correct use, as well as user safety. Therefore, to ensure the outdoor energy storage unit can be safely and independently used after disassembly, in some embodiments, a standard safety condition is preset for the outdoor energy storage unit.

[0045] And, please refer to Figure 3 , Figure 3 yes Figure 1A flowchart illustrating an embodiment of step S12 described above. Specifically, during the disassembly process, in step S12, after the outdoor energy storage unit and the indoor energy storage unit reach a preset disconnection condition, the main control battery control circuit and the outdoor battery control circuit are disconnected, specifically including: Step S121: Obtain the safety detection status of the outdoor energy storage unit. Unlike the parallel connection scheme, since the outdoor energy storage unit should be an independently usable energy storage structure at this time, its safety detection status is determined by its own outdoor battery control circuit and compared with the standard safety status set in step S121.

[0046] Step S122: Responding to the outdoor energy storage unit's safety detection status reaching the standard safety status. It is understandable that in some implementation scenarios, once the outdoor energy storage unit's safety detection status reaches the standard safety status, the outdoor energy storage unit already possesses the safety status and charge capacity for independent use.

[0047] Step S123: The main control battery control circuit and the outdoor battery control circuit are disconnected, separating the indoor energy storage unit and the outdoor energy storage unit. After reaching the standard safety state in step S122, the main control battery control circuit disconnects from the outdoor battery control circuit, and the communication connection between the two is also broken. At this point, the outdoor energy storage unit is completely independent of the indoor energy storage unit. The separated indoor and outdoor energy storage units can be used as two independent energy storage units depending on the situation.

[0048] Please refer to Figure 4 , Figure 4 yes Figure 1 A flowchart illustrating an embodiment of step S1 described above. In some implementation scenarios, step S1: obtaining the trigger command, specifically includes: Step S132: Manually press the confirmation button; Step S133: Send the corresponding trigger command according to the operation status of the confirmation button.

[0049] Specifically, when a user connects an outdoor energy storage unit to an indoor energy storage unit and presses the confirmation button, a connection command is triggered. When a user disconnects an outdoor energy storage unit from an indoor energy storage unit and presses the confirmation button, a disconnect command is triggered.

[0050] Understandably, in some embodiments, before requiring manual confirmation, the following steps are also included: Step S131: Trigger the microswitch and obtain the initial trigger signal. An internal microswitch exists within the accommodating structure of the indoor energy storage unit and the outdoor energy storage unit. When the outdoor energy storage unit is integrated into the indoor energy storage unit, the outdoor energy storage unit activates the microswitch within the indoor energy storage unit. When the outdoor energy storage unit is separated from the indoor energy storage unit, the outdoor energy storage unit deactivates the microswitch within the indoor energy storage unit.

[0051] Specifically, when the micro switch is in the on or off state, it generates a corresponding trigger command. At this time, the trigger command remains in the contact state and is not passed down. After the micro switch is responded to, a manual confirmation button is pressed.

[0052] Understandably, in some embodiments, after step S1: obtaining the trigger command, the method further includes: Based on the trigger command, a visual prompt should be provided. Understandably, when integrating or separating an outdoor energy storage unit into an indoor energy storage unit, relying solely on a microswitch and manual confirmation button without the operator's knowledge makes it impossible to determine the specific step of the operation if other personnel continue to operate. Furthermore, it fails to provide the user with an intuitive understanding of the operation being performed. Therefore, a visual prompt needs to be installed on the indoor energy storage unit structure. This visual prompt can be one or more of the following: light, text, or images.

[0053] Specifically, in some embodiments, visual prompts include any one or more of lights, sounds, or text patterns. That is, upon triggering a command, the corresponding state of lights, sounds, or text patterns is executed. Therefore, depending on different situations and different operation steps, the states of lights, sounds, or text patterns corresponding to different trigger commands should also be different, thus facilitating the user's determination of the currently executed operation step.

[0054] In a specific implementation scenario, the residential energy storage system control method also includes visually indicating the connection or disconnection process and results via lighting. During the connection or disconnection of the outdoor energy storage unit, the light flashes in a first color state; after the outdoor energy storage unit is successfully connected or disconnected, the light flashes in a second color state; and when the outdoor energy storage unit is not connected to the indoor energy storage unit, the light flashes in a third color state. More specifically, in one implementation scenario, the first color state can be yellow, the second color state can be green, and the third color state can be black. Furthermore, the light can be configured with three light sources, each flashing differently in different states; or it can be configured with a single light source, displaying different color states in different states.

[0055] Please refer to the reference. Figure 5 , Figure 6 and Figure 7 , Figure 5 This is an exploded structural diagram of an embodiment of the residential energy storage device of this application; Figure 6 This application Figure 5 Assembly diagram; Figure 7 yes Figure 6 Right view schematic diagram after assembly. A second aspect of this application proposes a residential energy storage device, including an indoor energy storage unit 30 and an outdoor energy storage unit 31. Both the indoor energy storage unit 30 and the outdoor energy storage unit 31 are equipped with battery control circuits, with the control circuit of the indoor energy storage unit 30 being a main control battery control circuit. The indoor energy storage unit 30 includes a receiving cavity 32, within which an interface terminal (not shown) is provided for the detachable installation of the outdoor energy storage unit 31. The residential energy storage device also includes a controller (not shown), connected to the interface terminal. When the indoor energy storage unit 30 and the outdoor energy storage unit 31 are interconnected, the battery control circuits are electrically connected to the controller through the interface terminal, and the controller controls the outdoor battery control circuit to shut down when detecting a connection. It is understood that the interface terminal of the indoor energy storage unit 30 is used to connect to the outdoor energy storage unit 31, and the presence of the controller allows the battery control circuit to be effectively and safely controlled, ensuring that circuit connection or disconnection is performed only after all circuits have been de-energized and there is no external interference. This avoids potential circuit damage or other safety hazards caused by direct connection or disconnection between the main control battery circuit and the outdoor battery control circuit. Furthermore, when both the main control battery circuit and the outdoor battery control circuit are complete circuit structures, allowing the indoor energy storage unit 30 and the outdoor energy storage unit 31 to be used independently, the controller's design ensures that the two independent circuits do not affect each other when connected or disconnected, thereby guaranteeing the stability of the indoor energy storage unit 30 and the outdoor energy storage unit 31 when used independently.

[0056] Specifically, in one embodiment, please continue to refer to Figure 6The accommodating cavity 32 also includes a microswitch 321, which is connected to the controller. When the outdoor energy storage unit 31 and the indoor energy storage unit 30 are connected to each other, the microswitch 321 is pressed against the microswitch 321. It is understood that the microswitch 321 is used to determine whether the outdoor energy storage unit 31 and the indoor energy storage unit 30 are connected to each other. The microswitch 321 is connected to the controller and issues a trigger command. When the outdoor energy storage unit 31 is inserted into the indoor energy storage unit 30, the outdoor energy storage unit 31 will contact the microswitch 321 upon insertion into the accommodating cavity 32, and the outdoor energy storage unit 31 will press against and push down the microswitch 321. At this time, the microswitch 321 is in the activated state, and the trigger command response is an in-line connection command. The residential energy storage system control method then proceeds to step S11 and thereafter. The following steps: When the outdoor energy storage unit 31 is separated from the indoor energy storage unit 30, the outdoor energy storage unit 31 is removed from the accommodating cavity 32 and its contact with the micro switch 321 is disengaged. The pressure between the outdoor energy storage unit 31 and the micro switch 321 is loosened, and the micro switch 321 pops up. At this time, the micro switch 321 is in the closed state, and the trigger command response is the separation command. The residential energy storage system control method performs step S12 and subsequent steps. The micro switch 321 is a structure that determines the internal connection status of the residential energy storage device at this time.

[0057] Furthermore, in one specific embodiment, the indoor energy storage unit 30 also includes a confirmation button 302 and indicator lights 301. The confirmation button 302 is connected to both the controller and the indicator lights 301. There are two indicator lights 301, each corresponding to the pressed or released state of the confirmation button 302. The operation of the confirmation button 302 is a crucial step in the control method of the residential energy storage system. When the outdoor energy storage unit 31 is incorporated into or separated from the indoor energy storage unit 30, manual operation of pressing the confirmation button 302 is required before the control method proceeds according to predetermined steps. In some embodiments, the pressed or released state of the confirmation button 302 corresponds to two indicator lights 301 respectively. When the confirmation button 302 is pressed, the indicator lights 301 are yellow; when the confirmation button 302 is released, the indicator lights 301 are black.

[0058] Specifically, the indoor energy storage unit 30 also includes at least one indicator light 301. The indicator light 301 is connected to the controller and displays different states of the residential energy storage device according to the controller's settings. Understandably, the indicator light 301 is used to indicate the connection status of the indoor energy storage unit 30 and the outdoor energy storage unit 31 within the residential energy storage device. When the indoor energy storage unit 30 and the outdoor energy storage unit 31 are successfully connected or disconnected, the indicator light 301 turns green; otherwise, the indicator light 301 remains off.

[0059] Furthermore, both indicator light 301 and display light 301 are designed to provide visual feedback to users regarding the progress of the control method within the residential energy storage device, and both indicator light 301 and display light 301 are mounted on the indoor energy storage unit 30. In another embodiment, indicator light 301 and display light 301 can be the same light, emitting different colors of light depending on the status.

[0060] In one specific embodiment, the outdoor energy storage unit 31 is provided with a handle 311. The handle 311 makes it easier to remove the outdoor energy storage unit 31 from the indoor energy storage unit 30 without adding extra structures to the outdoor energy storage unit 31 or increasing the volume of the outdoor energy storage unit, thus increasing the convenience of operation.

[0061] In another specific embodiment, the outdoor energy storage unit 31 also includes a battery (not shown), which is connected to the outdoor battery control circuit. The battery ensures that the outdoor energy storage unit 31 can operate independently after being disconnected from the indoor energy storage unit 30. It provides electrical energy to the outdoor energy storage unit 31 and, when the outdoor energy storage unit 31 is connected to the indoor energy storage unit 30, it plays a role in balancing the charge.

[0062] In the description of this application, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0063] The above are merely embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A control method for a residential energy storage system, the residential energy storage system comprising indoor energy storage units and outdoor energy storage units that can be connected or separated from each other, the indoor energy storage unit comprising a main control battery control circuit, and the outdoor energy storage unit comprising an outdoor battery control circuit, characterized in that, The control method includes: Obtain the trigger command; In response to the trigger command being a connection command, the main control battery control circuit and the outdoor battery control circuit operate simultaneously and establish a communication connection; after the outdoor energy storage unit and the indoor energy storage unit meet the preset connection conditions, the outdoor battery control circuit shuts down. In response to the trigger command being a split command, the main control battery control circuit and the outdoor battery control circuit operate simultaneously, and after the outdoor energy storage unit and the indoor energy storage unit reach the preset disconnection condition, the main control battery control circuit and the outdoor battery control circuit disconnect.

2. The control method according to claim 1, characterized in that, The residential energy storage system is pre-set with a standard safety status; After the outdoor energy storage unit and the indoor energy storage unit meet the preset conditions for connection, the outdoor battery control circuit is shut down, including: Obtain the safety detection status of the main control battery control circuit and the outdoor battery control circuit; After the safety detection status of both the main control battery control circuit and the outdoor battery control circuit reaches the standard safety status, the main control battery control circuit collects data from the outdoor battery control circuit. After a preset running time, the outdoor battery control circuit is turned off. The indoor energy storage unit and the outdoor energy storage unit are connected in parallel.

3. The control method according to claim 1, characterized in that, The outdoor energy storage unit is pre-set with a standard safety condition; After the outdoor energy storage unit and the indoor energy storage unit reach a preset disconnection condition, the main control battery control circuit and the outdoor battery control circuit are disconnected, including: Obtain the safety detection status of the outdoor energy storage unit; In response to the outdoor energy storage unit reaching the standard safety status, the main control battery control circuit and the outdoor battery control circuit are disconnected. The indoor energy storage unit and the outdoor energy storage unit are separated.

4. The control method according to any one of claims 1-3, characterized in that, The trigger command to be acquired includes: Manual operation confirmation button; Based on the operation status of the confirmation button, send the corresponding trigger command.

5. The control method according to claim 4, characterized in that, The control method further includes providing visual prompts based on the trigger command.

6. The control method according to claim 5, characterized in that, The visual cues include any one or more of light, sound, or text / patterns; According to the trigger command, run any one or more states of the light, sound or text pattern corresponding to the trigger command.

7. The control method according to claim 4, characterized in that, The manual operation confirmation button is preceded by: Trigger the micro switch to obtain the initial trigger signal.

8. The control method according to claim 1, characterized in that, It also includes visual cues using light to indicate the merging or splitting process and results, including: During the process of merging or splitting the outdoor energy storage unit, the light flashes in a first color state; After the outdoor energy storage unit is successfully connected or disconnected, the light flashes in a second color state; When the outdoor energy storage unit is not connected to the indoor energy storage unit, the light flashes in a third color state.

9. A residential energy storage device, comprising an indoor energy storage unit and an outdoor energy storage unit, characterized in that, in, The indoor energy storage unit includes a main control battery control circuit, and the outdoor energy storage unit includes an outdoor battery control circuit. The indoor energy storage unit includes a housing cavity, and the housing cavity is provided with an interface terminal. The outdoor energy storage unit can be installed into the housing cavity and electrically connected to the interface terminal, or disassembled from the housing cavity and electrically disconnected from the interface terminal. The residential energy storage device also includes a controller, which is connected to the interface terminal; When the indoor energy storage unit and the outdoor energy storage unit are interconnected, the main control battery control circuit and the outdoor battery control circuit are both electrically connected to the controller through the interface terminal. When the controller detects that the outdoor energy storage unit is installed in the accommodating cavity and connected to the indoor energy storage unit, it controls the outdoor battery control circuit to shut down.

10. The residential energy storage device according to claim 9, characterized in that, The accommodating cavity also includes a micro switch, which is connected to the controller; When the outdoor energy storage unit and the indoor energy storage unit are connected to each other, they abut against the micro switch.

11. The residential energy storage device according to claim 9, characterized in that, The indoor energy storage unit also includes a confirmation button and an indicator light, wherein the confirmation button is connected to both the controller and the indicator light; There are two indicator lights, each corresponding to the pressed or released state of the confirmation button.

12. The residential energy storage device according to claim 9, characterized in that, The indoor energy storage unit also includes at least one indicator light, which is connected to the controller and displays different states of the indoor energy storage device according to the settings of the controller.

13. The residential energy storage device according to any one of claims 9-12, characterized in that, The outdoor energy storage unit is equipped with a handle.

14. The residential energy storage device according to any one of claims 9-12, characterized in that, The outdoor energy storage unit also contains a battery, which is connected to the outdoor battery control circuit.

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