Household energy storage system

Abstract

The utility model provides a household energy storage system, comprising an outer shell used for enclosing to form an installation cavity, the installation cavity is divided into a first installation area and a plurality of second installation areas, and the first installation area and the second installation areas are sequentially distributed along a first direction; the control module is arranged in the first mounting area, the control module comprises a battery management chip, and at least one path of communication terminal of the battery management chip extends outwards from the outer shell; the plurality of battery modules are respectively mounted in the second mounting areas, each battery module comprises a plurality of battery units, and a direct-current wiring terminal of each battery module extends outwards from the first mounting area; and the moving module comprises a plurality of wheel elements, and the wheel elements are arranged at the lower part of the outer shell. According to the household energy storage system provided by the invention, more use scene requirements can be met, and the flexibility of the use scene is expanded.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply design, in particular to a household energy storage system. Background Art

[0002] Traditional household energy storage systems include three parts: inverter, battery and base; the inverter is used for AC / DC conversion, the battery is the energy storage part, and the base plays a supporting role for easy installation. Common batteries often use 50Ah and 100Ah battery cells. The battery cell is the core component for storing charge in the battery, usually composed of positive electrode material, negative electrode material, separator and electrolyte. However, the energy density of 50Ah and 100Ah battery cells is low. To achieve the same capacity, a large number of series connections are required, which will increase the complexity of the structure and wiring of the battery pack. The use of larger battery cells will increase the volume and weight of the battery pack, limiting its use in application scenarios. Summary of the invention

[0003] In order to solve the problem that the use of large-capacity battery cells in household energy storage systems will increase the volume and weight of the battery pack and limit its use in application scenarios, the first aspect of the present application provides a household energy storage system.

[0004] In one or more embodiments of the present application, a household energy storage system includes: an outer shell, which is used to enclose an installation cavity, wherein the installation cavity is divided into a first installation area and a plurality of second installation areas, wherein the first installation area and the second installation area are sequentially distributed along a first direction; a control module, which is arranged in the first installation area, wherein the control module includes a battery management chip, wherein at least one communication terminal of the battery management chip extends outward from the outer shell; a plurality of battery modules, which are respectively installed in the second installation area, wherein the battery module includes a plurality of battery cells, wherein the DC connection terminals of the battery modules extend outward from the first installation area; and a mobile module, wherein the mobile module includes a plurality of wheel elements, which are arranged at the lower portion of the outer shell.

[0005] In one or more embodiments of the present application, the household energy storage system also includes: an inner shell, which is arranged in the second installation area; the inner shell is used to divide the second installation area into a plurality of accommodating cavities, the accommodating cavities extend along a second direction, and the second direction is perpendicular to the first direction; the accommodating cavity can accommodate one battery module; and a support base, which is detachably fixed to the inner shell.

[0006] In one or more embodiments of the present application, the cross-section of the battery unit is rectangular or square; and a plurality of the battery units are sequentially arranged in the accommodating cavity along an extension direction of the accommodating cavity.

[0007] In one or more embodiments of the present application, the household energy storage system also includes: a first connecting member, which comprises: a main body, which is arranged on the side of the inner shell, and the main body is detachably fixedly connected to the inner shell; a first connecting part, which is bent from the main body toward a direction away from the first installation area and is detachably fixedly connected to the outer shell; a second connecting part, which is bent from the main body toward a direction away from the first installation area and is detachably fixedly connected to the outer shell; a third connecting part, which is bent from the main body toward a direction away from the accommodating cavity and is detachably fixedly connected to the outer shell; and a fourth connecting part, which is bent from the main body toward a direction away from the accommodating cavity and is detachably fixedly connected to the outer shell; wherein, the first connecting part and the second connecting part are parallel to each other, and the third connecting part and the fourth connecting part are parallel to each other.

[0008] In one or more embodiments of the present application, the household energy storage system further includes: a temperature regulating module, wherein the temperature regulating module is disposed above the inner shell.

[0009] In one or more embodiments of the present application, the temperature regulating module is an electric heating film; the electric heating film includes: a plurality of conductive sheets; and a tubular heating element, in which a heating cable is arranged, the heating cable is electrically connected to the conductive sheet, and the heating cable and the conductive sheet are evenly distributed above the inner shell.

[0010] In one or more embodiments of the present application, the household energy storage system further includes: a copper busbar, which electrically connects the plurality of battery modules located in the second installation area.

[0011] In one or more embodiments of the present application, the battery module is a 1P4S battery module consisting of 4 battery cells.

[0012] In one or more embodiments of the present application, a manual operation switch is provided on the housing.

[0013] In one or more embodiments of the present application, the household energy storage system further includes: a base, wherein the first installation area, the second installation area and the base are sequentially distributed along the first direction, and hanging ears are provided on both sides of the base and the outer shell, and the hanging ears extend outward from the outer shell.

[0014] The household energy storage system provided in this application can meet the energy storage needs in scenarios such as home. It adopts a modular design, and the battery modules and control modules are independently distributed in different installation areas, which is convenient for maintenance and replacement, and also improves the reliability of the system. The battery module can be expanded as needed, the number of battery modules can be adjusted, the energy storage capacity can be increased, and the needs of more usage scenarios can be met. The mobile module makes the entire energy storage system mobile, and it can be moved and adjusted as needed, which expands the flexibility of the usage scenario.

[0015] After reading the specific embodiments of the present invention in conjunction with the accompanying drawings, other features and advantages of the present invention will become more clear. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 It is a structural schematic diagram of one or more implementation modes of the household energy storage system provided by the utility model;

[0018] Figure 2 It is a structural schematic diagram of one or more implementation modes of the household energy storage system provided by the utility model;

[0019] Figure 3 It is a structural schematic diagram of one or more implementation modes of the household energy storage system provided by the utility model;

[0020] Figure 4 It is a structural schematic diagram of one or more implementation modes of the household energy storage system provided by the utility model;

[0021] Figure 5 It is a structural schematic diagram of one or more implementation modes of the household energy storage system provided by the utility model;

[0022] Figure 6 It is a structural schematic diagram of one or more implementation modes of the household energy storage system provided by the utility model;

[0023] Figure 7 It is a structural schematic diagram of one or more implementation modes of the household energy storage system provided by the utility model;

[0024] Figure 8 It is a structural schematic diagram of one or more implementation modes of the household energy storage system provided by the utility model;

[0025] Fig. 9 It is a structural schematic diagram of one or more implementation modes of the household energy storage system provided by the utility model;

[0026] Fig.10 It is a structural schematic diagram of one or more implementation modes of the household energy storage system provided by the utility model;

[0027] Fig.11 It is a structural schematic diagram of one or more implementation modes of the household energy storage system provided by the utility model;

[0028] In the figure: 10, household energy storage system; 11, outer shell; D1, first direction; R1, first installation area; R2, second installation area; 12, battery module; 13, DC terminal; 14, installation cavity; 15, wheel element; 16, inner shell; D2, second direction; 17, accommodating cavity; 18, support seat; 19, battery unit; 20, first connecting member; 21, main body; 22, first connecting part; 23, second connecting part; 24, third connecting part; 25, fourth connecting part; 26, temperature adjustment module; 27, conductive sheet; 28, tubular heating element; 29, copper busbar; 30, hanging ear. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0030] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0031] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0032] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0033] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0034] The disclosure below provides many different embodiments or examples for realizing different structures of the present invention. In order to simplify the disclosure of the present invention, the components and settings of specific examples are described below. Of course, they are merely examples, and the purpose is not to limit the present invention. In addition, the present invention can repeat reference numbers and reference letters in different examples, and this repetition is for the purpose of simplification and clarity, and does not indicate the relationship between the various embodiments and settings discussed in itself. In addition, the present invention provides various specific examples of processes and materials, but those of ordinary skill in the art can be aware of the application of other processes and the use of other materials.

[0035] Refer to the attached Figures 1 to 11 , the household energy storage system 10 provided by the utility model is introduced.

[0036] The household energy storage system 10 refers to an equipment system installed in user places such as residences and commercial buildings for storing and supplying electric energy. Household energy storage can be used in conjunction with power grids, photovoltaic power generation systems, wind power generation systems, etc. to achieve storage, regulation and optimal utilization of electric energy. For example, it can store the surplus electric energy of renewable energy power generation systems and release it when needed, improve the utilization rate and economy of renewable energy, optimize charging and discharging strategies, reduce users' electricity costs, and participate in the demand-side management of the power grid. In addition, the household energy storage system 10 can achieve peak shaving and valley filling, that is, during the peak period of power consumption of the power grid, the stored electric energy is released to reduce the load on the power grid; during the period of low power consumption, the energy storage is charged to smooth the power curve. In addition, it can also provide users with emergency backup power supply in the event of power grid failure, power outage, etc., to ensure the continuous power supply of important loads.

[0037] The core of the household energy storage system 10 is a battery pack composed of multiple battery modules 12. The battery pack can be a lithium-ion battery, a lead-acid battery or other types of batteries. Each battery module 12 includes multiple battery cells 19, which can be connected in series or in parallel to meet different capacity and voltage requirements.

[0038] The household energy storage system 10 is used in combination with an inverter, which is used to convert the DC power stored in the battery pack into AC power for use by household appliances. Through power regulation, a smooth power waveform is output, which can effectively improve the quality of power.

[0039] The household energy storage system 10 is provided with a control module, which is used for battery management, power management, energy management, fault diagnosis and protection, etc. For example, the control module includes a battery management chip, which can monitor the voltage, current, temperature and other parameters of the battery pack in real time to ensure the normal operation and safety of the battery pack.

[0040] In one or more embodiments of the present application, the control module also includes a charge and discharge management chip, which can control the charging and discharging process of the battery pack to improve the life and performance of the battery pack, or can intelligently adjust the charging and discharging strategy of the system according to user needs and the status of the power grid to achieve maximum energy conservation and emission reduction and reduce electricity costs.

[0041] In one or more embodiments of the present application, the control module can also be used to drive the inverter to work (or communicate with the inverter's controller) to meet the needs of household appliances, or monitor the mains voltage and frequency in real time to ensure that the household energy storage system 10 and the power grid operate synchronously.

[0042] In one or more embodiments of the present application, the control module also includes a controller chip, which can monitor the status of each device in real time, and perform diagnosis and alarm when a fault occurs, or take protective measures to prevent damage to the system and equipment.

[0043] In one or more embodiments of the present application, the battery management chip, the charge and discharge management chip, and the controller chip may all be commercially available chips, such as product series from Texas Instruments, Analog Devices, Maxim Integrated, etc. No further limitation is imposed on the models and manufacturers of the commercially available chips.

[0044] In order to improve the stability and safety of the household energy storage system 10 and make it conform to the usage habits and needs of load users, in one or more embodiments of the present application, the household energy storage system 10 adopts a modular design, specifically, including an outer shell 11, a control module (not shown), multiple battery modules 12 and a mobile module.

[0045] In one or more embodiments of the present application, the outer shell 11 is used to enclose a mounting cavity 14. The mounting cavity 14 is divided into a first mounting area R1 and a plurality of second mounting areas R2, and the first mounting area R1 and the second mounting area R2 are sequentially distributed along the first direction D1.

[0046] The outer shell 11 can be made of metal or other hard materials.

[0047] In one or more embodiments of the present application, the first direction D1 is a height direction of the outer shell 11 .

[0048] In one or more embodiments of the present application, the control module is disposed in the first installation area R1. At least one communication terminal of the battery management chip in the control module extends outward from the outer shell 11. Exemplarily, a groove is provided on the outer shell 11, and the communication terminal is located in the groove. An operable space is reserved around the communication terminal, and the communication terminal can be connected to other devices for communication. The communication terminal can be a serial communication interface such as I2C, CAN, UART, etc., so that the power management chip can be connected to devices such as inverters, displays, host computers, energy management systems, etc. for communication.

[0049] In one or more embodiments of the present application, a plurality of battery modules 12 are respectively installed in the second installation area R2. The battery module 12 includes a plurality of battery cells 19, and the DC terminal 13 of the battery module 12 extends outward from the first installation area R1. The DC terminal 13 can be a quick-connect connector, a bolt-type terminal, etc., to ensure good contact and minimize contact resistance, thereby improving the efficiency and reliability of the system.

[0050] In one or more embodiments of the present application, the first direction D1 is the height direction of the outer shell 11 , and the DC connection terminal 13 extends outward from the top of the outer shell 11 to facilitate connection with the inverter located above.

[0051] In one or more embodiments of the present application, the mobile module includes a plurality of wheel elements 15 , which are disposed at the lower portion of the outer shell 11 , thereby ensuring good mobility even when using a heavy battery unit 19 .

[0052] The household energy storage system 10 provided in the present application can meet the energy storage needs in scenarios such as home, and adopts a modular design. The battery module 12 and the control module are independently distributed in different installation areas, which is convenient for maintenance and replacement, and also improves the reliability of the system. The battery module 12 adopts a stacked design, which can be expanded as needed, and the number of battery modules 12 can be adjusted to increase the energy storage capacity and meet the needs of more usage scenarios. The mobile module makes the entire energy storage system mobile, and can be moved and adjusted as needed, which expands the flexibility of the usage scenario.

[0053] In one or more embodiments of the present application, the structural design of the household energy storage system 10 is further optimized by adding mechanical fixing and limiting measures. As shown in the figure, the household energy storage system 10 also includes an inner shell 16 and a support seat 18.

[0054] In one or more embodiments of the present application, the inner housing 16 is disposed in the second installation area R2, and the inner housing 16 is used to divide the second installation area R2 into a plurality of accommodating cavities 17, and the accommodating cavities 17 extend along the second direction D2. The second direction D2 is perpendicular to the first direction D1.

[0055] In one or more embodiments of the present application, the second direction D2 is a depth direction, as indicated by the arrow in the figure.

[0056] In one or more embodiments of the present application, the receiving cavity 17 can receive one battery module 12 .

[0057] In one or more embodiments of the present application, the support base 18 is detachably fixedly connected to the inner shell 16. A plurality of through holes may be evenly provided on the support base 18 to improve heat dissipation performance.

[0058] The second installation area R2 is divided into a plurality of accommodating cavities 17 by the inner shell 16, and is fixedly connected to the inner shell 16 by the support base 18, so that as a whole, the household energy storage system 10 is more stable, and the battery module 12 can be prevented from moving or colliding due to vibration or external force. The detachable fixed connection method can be conveniently maintained and replaced. The design of multiple accommodating cavities 17 can avoid contact between the battery modules 12. Even if the battery modules 12 are moved or collided due to vibration or external force, they can avoid mutual contact or disconnection, and also make the whole system look neater and more orderly.

[0059] In one or more embodiments of the present application, the cross section of the battery cell 19 is rectangular or square. The rectangular or square battery cell 19 has the advantages of high capacity, high safety and easy arrangement.

[0060] In one or more embodiments of the present application, a plurality of battery cells 19 are sequentially disposed in the accommodating cavity 17 along an extension direction of the accommodating cavity 17 .

[0061] By adopting rectangular or square battery cells 19 and arranging multiple battery cells 19 in sequence in the accommodating cavity 17 along the extension direction of the accommodating cavity 17, it is possible to achieve high integration and compact arrangement of the battery module 12, improve the system capacity utilization, and also facilitate the maintenance and temperature regulation of the battery cells 19. The content of the temperature regulation part will be elaborated in detail below.

[0062] In one or more embodiments of the present application, Figure 6 As shown, the first connecting member 20 is also included. The first connecting member 20 has several parts, such as a main body 21, a first connecting part 22, a second connecting part 23, a third connecting part 24 and a fourth connecting part 25.

[0063] In one or more embodiments of the present application, the main body 21 is disposed on a side of the inner shell 16 , and the main body 21 is detachably fixedly connected to the inner shell 16 .

[0064] In one or more embodiments of the present application, the first connection portion 22 is bent from the main body 21 toward a direction away from the first installation area R1 and is detachably fixedly connected to the outer shell 11 .

[0065] In one or more embodiments of the present application, the second connection portion 23 is bent from the main body 21 toward a direction away from the first installation area R1 and is detachably fixedly connected to the outer shell 11 .

[0066] In one or more embodiments of the present application, the third connection portion 24 is bent from the main body 21 toward a direction away from the accommodating cavity 17 and is detachably fixedly connected to the outer shell 11 .

[0067] In one or more embodiments of the present application, the fourth connection portion 25 is bent from the main body 21 toward a direction away from the accommodating cavity 17 and is detachably fixedly connected to the outer shell 11 .

[0068] In one or more embodiments of the present application, the first connection portion 22 and the second connection portion 23 are parallel to each other.

[0069] In one or more embodiments of the present application, the third connection portion 24 and the fourth connection portion 25 are parallel to each other.

[0070] The first connecting member 20 is located on both sides of the inner shell 16. The inner shell 16 and the outer shell 11 are fixedly connected by the first connecting member 20, which can improve the overall stability of the household energy storage system 10. For the heavy household energy storage system 10, large vibration or movement during movement or operation can be effectively avoided. The design of the first connecting member 20 makes it easy to fix the inner shell 16 and the outer shell 11, and it is also convenient to disassemble and maintain, forming an integral inner shell 16 and outer shell 11, which also has better integrity and mechanical strength.

[0071] To increase the range of applicable scenarios of the household energy storage system 10 , in one or more embodiments of the present application, the household energy storage system 10 further includes a temperature regulating module 26 , which is disposed above the inner shell 16 .

[0072] In one or more embodiments of the present application, the temperature regulating unit is an electric heating film. As shown in the figure, the electric heating film includes a plurality of conductive sheets 27 and a tubular heating element 28, wherein a heating cable is provided in the tubular heating element 28, and the heating cable is electrically connected to the conductive sheet 27, and the heating cable and the conductive sheet 27 are evenly distributed above the inner shell 16. When the battery is operated in a low temperature environment, the electric heating film can restore the temperature of the battery module 12 to ensure that the battery module 12 operates at a suitable temperature.

[0073] Low temperature will reduce the performance of the battery module 12, resulting in reduced battery capacity and increased internal resistance, thereby reducing efficiency. To solve this problem, an electric heating film is designed and provided, which is used to provide the required heat to maintain the battery at a higher operating temperature, thereby mitigating the low temperature effect. The heating cable can be made of resistance wire, conductive alloy or other materials, and the distribution of the conductive sheet 27 and the tubular heating element 28 can provide uniform heating over the entire surface, while more effectively controlling the heating process to avoid overheating or circuit failure.

[0074] In one or more embodiments of the present application, the temperature adjustment unit may further include a fan, which is used to accelerate the natural heat dissipation of the battery module 12, cool the battery module 12 when operating in a high temperature environment, and ensure that the battery module 12 operates at a suitable temperature.

[0075] In one or more embodiments of the present application, the household energy storage system 10 further includes a copper busbar 29, which electrically connects the plurality of battery modules 12 located in the second installation area R2 so as to electrically connect the plurality of battery modules 12 into a whole. The copper busbar 29 is a metal material with good electrical conductivity and thermal conductivity, which can effectively reduce the connection resistance between the battery modules 12, so that the battery modules 12 as a whole can better perform their performance during operation, and the copper busbar 29 can also balance the voltage between the battery modules 12, reduce overcharge or overdischarge of a single battery module 12, and improve stability and life.

[0076] In one or more embodiments of the present application, the battery module 12 is a 1P4S battery module composed of four battery cells 19; it may also be a 2P2S battery module or other forms of battery modules.

[0077] In one or more embodiments of the present application, a manual operation switch is provided on the housing. The manual operation switch can be used as an emergency switch to cut off the power supply circuit in an emergency to avoid safety accidents.

[0078] In one or more embodiments of the present application, the household energy storage system 10 also includes a base. Along the first direction D1, that is, the height direction of the shell, the first installation area R1, the second installation area R2 and the base are distributed in sequence. Both sides of the base and both sides of the outer shell 11 are provided with hanging ears 30, and the hanging ears 30 extend outward from the outer shell 11. On the one hand, the hanging ears 30 can make the household energy storage system 10 close to the wall or the support surface, saving space, which is particularly suitable for home users; it is also convenient for disassembly and movement. On the other hand, by fixing the household energy storage system 10 with the hanging ears 30, the stability of the system can be improved, and the household energy storage system 10 can be prevented from sliding, moving or tilting due to vibration or other external forces during use, thereby improving the safety of the system. In particular, when a large battery cell of 280Ah to 320Ah is used as the battery module 12, the weight of the household energy storage system 10 is very large, and a safety accident may occur if it is tipped over. The design and use of the hanging ears 30 can effectively solve this problem.

[0079] In one or more embodiments of the present application, the household energy storage system 10 further includes a smoke detector as a fire fighting device, which can detect the initial smoke of a fire and sound an alarm to alert the user. Other types of fire fighting devices can also be provided in the household energy storage system 10, which are not listed here one by one.

[0080] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0081] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited to this. Any changes or substitutions that can be easily thought of by technicians familiar with the technical field within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. Household energy storage system, characterized in that: include: An outer shell, which is used to enclose a mounting cavity, wherein the mounting cavity is divided into a first mounting area and a plurality of second mounting areas, wherein the first mounting areas and the second mounting areas are sequentially distributed along a first direction; A control module, which is arranged in the first installation area, the control module includes a battery management chip, and at least one communication terminal of the battery management chip extends outward from the outer shell; A plurality of battery modules, which are respectively installed in the second installation area, the battery modules include a plurality of battery cells, and the DC terminals of the battery modules extend outward from the first installation area; and The mobile module includes a plurality of wheel elements which are arranged at the lower part of the outer shell.

2. The household energy storage system according to claim 1, characterized in that: Also includes: an inner shell, which is arranged in the second installation area; the inner shell is used to divide the second installation area into a plurality of accommodating cavities, the accommodating cavities extend along a second direction, the second direction is perpendicular to the first direction; the accommodating cavity can accommodate one of the battery modules; and A support base is detachably fixedly connected to the inner shell.

3. The household energy storage system according to claim 2, characterized in that: The cross section of the battery cell is rectangular or square; The plurality of battery cells are sequentially arranged in the accommodating cavity along an extension direction of the accommodating cavity.

4. The household energy storage system according to claim 2, characterized in that: Also includes: The first connecting member comprises: A main body, which is arranged on the side of the inner shell, and the main body is detachably fixedly connected to the inner shell; A first connecting portion, which is bent from the main body toward a direction away from the first installation area and is detachably fixedly connected to the outer shell; A second connection portion, which is bent from the main body toward a direction away from the first installation area and is detachably fixedly connected to the outer shell; A third connecting portion, which is bent from the main body toward a direction away from the accommodating cavity and is detachably fixedly connected to the outer shell; and A fourth connecting portion, which is bent from the main body toward a direction away from the accommodating cavity and is detachably fixedly connected to the outer shell; Wherein, the first connection portion and the second connection portion are parallel to each other, and the third connection portion and the fourth connection portion are parallel to each other.

5. The household energy storage system according to claim 3, characterized in that: Also includes: A temperature regulating module is arranged above the inner shell.

6. The household energy storage system according to claim 5, characterized in that: The temperature regulating module is an electric heating film; The electric heating film comprises: a plurality of conductive sheets; and A tubular heating element is provided with a heating cable, the heating cable is electrically connected to the conductive sheet, and the heating cable and the conductive sheet are evenly distributed above the inner shell.

7. The household energy storage system according to claim 5, characterized in that: Also includes: A copper busbar electrically connects a plurality of battery modules located in the second mounting area.

8. The household energy storage system according to any one of claims 1 to 7, characterized in that: The battery module is a 1P4S battery module consisting of 4 battery cells.

9. The household energy storage system according to any one of claims 1 to 7, characterized in that: The shell is provided with a manual operation switch.

10. The household energy storage system according to any one of claims 1 to 7, characterized in that: Also includes: The base, along the first direction, the first installation area, the second installation area and the base are distributed in sequence, and the base and the outer shell are provided with hanging ears on both sides, and the hanging ears extend outward from the outer shell.

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