Stacked household energy storage device

Abstract

The utility model discloses a stacked household energy storage device which is formed by stacking a base, at least one battery module and a main control module from bottom to top in sequence. According to the stacked household energy storage device, the box bodies are made of aluminum alloy, the overall mass is further reduced, extra fixing pieces do not need to be introduced in the fixing mode between the box bodies, the signal acquisition board is fixed to one side of the end face of the battery, the overall thickness size is effectively controlled, and assembling and wiring are convenient in the scheme.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of household energy storage device, especially to a stacked household energy storage device. BACKGROUND

[0002] With the rapid development of energy storage technology and the gradual reduction of energy storage cost, household energy storage products are facing an unprecedented popular wave, especially the overseas household energy storage market is extremely hot. Many domestic traditional white goods enterprises have entered the household energy storage field and have laid out the new energy track. As an environmentally friendly and energy-saving energy solution, it can make full use of renewable energy such as solar energy and wind energy, reduce dependence on traditional fossil energy, reduce carbon emissions, and contribute to environmental protection. Among them, the stacked household energy storage product occupies a place in the market due to its unique modular design, flexible expansion, convenient maintenance, and efficient energy storage and intelligent management.

[0003] Stacked household energy storage products are a kind of efficient and flexible energy storage solutions, widely used in households, small office spaces and remote areas to meet the demand for stable power. Such products are usually composed of multiple energy storage modules, each module has a certain energy storage capacity, and a larger energy storage capacity is achieved through stacking. In order to ensure the stability of the entire system, it is crucial to connect and fix each module. During use, stacked household energy storage products may be affected by various external forces. If the connection between each module is not firm, it may cause the structure to be loose, thereby affecting the use effect and safety of the product. Good connection and fixation can ensure more efficient transmission of electrical energy between modules, reducing energy loss due to poor contact. Stable connection and fixation can reduce wear and tear between modules, thereby prolonging the overall service life of the product.

[0004] Many manufacturers adopt stacked modular design, but the schemes are different. In the prior art, sheet metal boxes are used, and the process is relatively simple, only suitable for producing some regular-shaped products, with simple modeling and no differentiation; at the same time, the sheet metal box is relatively heavy, increasing the weight of the battery, increasing the difficulty of installation and maintenance; in addition, the sheet metal box has poor weather resistance and is easy to rust when used outdoors, reducing the service life. The multiple battery packs are arranged horizontally in the battery box, increasing the overall depth size and occupying too much household use area, which is not user-friendly. The battery pack fixing frame structure is complex and extensive, not compact enough, and the assembly process is complex, increasing the production and manufacturing difficulty and cost. The battery pack fixing method is unique, and the battery pack is suspended on the long bolt, which has the risk of bolt failure and increases the safety hazard. The device is not expandable and only supports floor installation or wall installation, which has certain limitations.

[0005] In the patent of CN218783743U that has been authorized, a household energy storage system and its module fixing structure are disclosed. The module fixing structure of the household energy storage system includes multiple modules and at least one first fixing member. The modules are stacked in at least one stacking direction. In the stacking direction of the N modules stacked, the first fixing member spans M modules, and the first fixing member is fixed to two modules at both ends, respectively. N and M are positive integers, N≥3, and M≤N.2. In the above-mentioned module fixing structure of the household energy storage system, only two modules of the N stacked modules need to be fixed to the same first fixing member, and M modules are not fixed to the first fixing member, reducing the number of fixed connections. Correspondingly, the first fixing member spans M modules in the stacking direction of the N stacked modules, reducing the number of first fixing members and the number of fixed connections. Therefore, the above-mentioned module fixing structure of the household energy storage system improves the convenience of installation and maintenance. In this technical solution, sheet metal boxes are used, which have the problems of heavy weight and difficulty in ensuring size consistency. Although the fixing method between modules uses an optimized scheme to reduce the number of fixing members and the number of fixed connections, it still introduces a certain number of fixing members.

[0006] In the patent of CN219106385U that has been authorized, a household energy storage battery pack system is disclosed, which is composed of several stacked battery packs. The side surfaces of two adjacent battery packs are provided with the same fixing plate. Wall installation brackets are installed on the side walls of the box. The battery pack includes a box and a box cover installed together with the box. The box is installed with an electric core module. The battery management system is installed on the lower surface of the box cover and located above the electric core module. Cover plates are installed on the left and right sides of the box. The household energy storage battery pack system can be installed on any solid wall in the family, has a small footprint, and the entire system is only 670mm wide, protruding 230mm from the wall. In this technical solution, sheet metal boxes are still used, which have the problems of heavy weight and difficulty in ensuring size consistency. The fixing method between modules introduces a certain number of fixing members.

[0007] In the patent of CN220821811U which has been authorized, a limiting device for household energy storage battery pack stacking is disclosed, which comprises an inner fixed plate and an outer fixed plate. The inner fixed plate and the outer fixed plate are inserted and matched. The inner fixed plate and the outer fixed plate are respectively installed on one end of the side of the battery pack close to the top and the bottom. When two adjacent battery packs are stacked, the matching of the inner fixed plate and the outer fixed plate precedes the terminal matching of the two battery packs. The utility model discloses an inner fixed plate and an outer fixed plate which are inserted and matched and matched before the terminal matching, so that the adjacent two battery packs can be positioned conveniently, thereby ensuring that the terminal insertion process will not cause the insertion pin to collide due to large displacement during the assembly process, and the risk of the service life of the connector being reduced or the connector being damaged is avoided. In this technical solution, a sheet metal box body is still used, which has the problems of heavy weight and difficulty in ensuring size consistency. A triangular structure for fixing is provided, but since there are multiple positions between the upper and lower box bodies that need to be matched, the matching difficulty is increased.

[0008] In the patent of CN217983556U which has been authorized, a tower type household energy storage battery system is disclosed, which comprises a base, a plurality of exhaust fans installed in the base, and a plurality of standard boxes stacked and installed on the top of the base. The standard boxes are stacked and installed one by one from bottom to top. A high-pressure box is installed on the top of the standard box. The standard box comprises an outer shell, a positioning boss is arranged on the upper side of the outer shell, a positioning groove is arranged on the lower side of the outer shell, the positioning boss and the positioning groove are matched with each other, a plurality of fastening screws are installed on the four sides of the outer shell, a heat-conducting inner shell is connected to the other side of the fastening screws, the heat-conducting inner shell is installed in the outer shell, a plug-in boss is arranged on the upper side of the heat-conducting inner shell, a plug-in groove matched with the plug-in boss is arranged on the lower side of the heat-conducting inner shell, a reinforcing mechanism is installed at the four corners between the outer shell and the heat-conducting inner shell, a support frame is installed in the heat-conducting inner shell, and an energy storage battery module is installed in the support frame. In this technical solution, a sheet metal box body is still used, which has the problems of heavy weight and difficulty in ensuring size consistency. The upper side of the outer shell is provided with a positioning boss, the lower side of the outer shell is provided with a positioning groove, and the positioning boss and the positioning groove are matched with each other. Multiple positions need to be matched, which increases the matching difficulty.

[0009] In the patent of CN218731460U which has been authorized, a household energy storage battery module is disclosed, comprising: a battery assembly for providing external power; a cabinet shell for supporting the battery assembly, the cabinet shell comprises a front-end open box, and the two side walls of the box cavity are symmetrically provided with guide rails facilitating the pulling out or pushing into the box of the battery assembly, and a locking mechanism is further arranged between the box and the battery assembly to fix the positions of the two. The utility model can assemble the battery module outside the cabinet shell, which is convenient to assemble; the installation and wiring of the battery module are no longer affected by the size of the cabinet shell, the operation space required for assembly in the box is reduced, thereby reducing the overall size of the cabinet shell; the modular integration degree is high, the connecting piece allows multiple cabinet shells to be connected together, the battery energy storage terminals and communication interfaces are provided on the side wall of the box, and multiple household energy storage battery modules can be connected together for use. In this technical solution, the sheet metal box is still used, which has the problems of heavy quality and difficult to guarantee the size consistency, and the locking structure is also arranged, and the protection plate is arranged on one large side of the battery, which increases the overall width size.

[0010] In summary, the traditional household energy storage battery box adopts a sheet metal stamping and bending scheme, which has the advantages of low cost and simple development, but due to the poor size consistency, multiple battery boxes may have assembly difficulties and poor alignment after stacking, thereby resulting in poor overall appearance; in addition, in order to ensure the overall stability after installation, the modules need to be fixed, and in the existing scheme, a certain number of fixing pieces are generally introduced to achieve this, which increases the material cost and production cost; the fixed position of the protection plate increases the overall thickness size. Utility model content

[0011] The utility model aims at overcoming the defects of the prior art, and provides a stacked household energy storage device which has compact overall structure, simple manufacturing process, high space utilization, small land occupation, beautiful appearance, convenient capacity expansion and supports multiple installation modes.

[0012] In order to achieve the above-mentioned purpose, the following solutions are adopted in the present application:

[0013] A stacked household energy storage device, comprising a base, at least one battery module and a main control module stacked from bottom to top.

[0014] The battery module comprises an aluminum alloy battery box, a battery box left cover plate, a battery box right cover plate and a battery pack; the battery pack is assembled on the aluminum alloy battery box through a support and is closed by the battery box left cover plate and the battery box right cover plate; and the positive and negative electrode lead-out directions of the battery pack are arranged symmetrically left and right.

[0015] The battery pack comprises an upper layer battery pack and a lower layer battery pack, the support comprises a square support and an L-shaped support, the lower layer battery pack is arranged above the square support, and the upper layer battery pack is arranged above the L-shaped support.

[0016] The bottom of the aluminum alloy battery box is provided with two guide rails, the inner side of the square support is matched with the outer side of the guide rails, the battery module stack is guided to be pushed into the box body from one side of the battery box, and tilting of the battery module stack during the pushing process is prevented; the bottom of the aluminum alloy battery box is provided with a limiting block on one side, and the square support is provided with a groove matched with the limiting block on one side.

[0017] The top of the aluminum alloy battery box is provided with a box top protruding structure matched with a box bottom protruding structure.

[0018] The left cover plate of the battery box is internally provided with a fire-fighting module.

[0019] The battery module comprises a battery module connector fixing support, and the battery module connector fixing support is provided with a power connector and a communication connector.

[0020] The battery module comprises a signal acquisition board, and the signal acquisition board is arranged on the signal acquisition board fixing support.

[0021] The main control module comprises an aluminum alloy high-voltage box, a high-voltage box left cover plate, a high-voltage box right cover plate, a control unit, and a high-voltage box connector fixing support; the high-voltage box connector fixing support is provided with a power output connector and a communication debugging connector, and the control unit comprises a battery management unit.

[0022] The aluminum alloy high-voltage box left cover plate is provided with a direct current circuit breaker.

[0023] The stack type household energy storage device has the advantages that the box body is made of aluminum alloy, the overall quality is further reduced, the fixing mode between the box bodies does not need to introduce additional fixing members, the signal acquisition board is fixed on one side of the battery end face, the overall thickness size is effectively controlled, and the scheme is convenient to assemble and wire. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 It is a whole schematic view of the stack type household energy storage device.

[0025] Figure 2 It is an appearance schematic view of the battery module.

[0026] Figure 3 It is an exploded schematic view of the battery module.

[0027] Figure 4The utility model discloses a main control module appearance schematic diagram.

[0028] Figure 5 The utility model discloses a main control module decomposition schematic diagram.

[0029] Figure 6 The utility model discloses a battery module partial structure schematic diagram.

[0030] Figure 7 The utility model discloses a battery module interval fixed structure schematic diagram.

[0031] Figure 8 The utility model discloses a battery box inner limiting block position schematic diagram. DETAILED DESCRIPTION

[0032] The utility model will be further explained in detail below in combination with the drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0033] Referring to Figure 1 The utility model discloses a stacking type household energy storage device, which is stacked by multiple modules and includes a plurality of battery modules 1, a main control module 2 and a base 3. Specifically, the base, the battery module and the main control module are stacked from bottom to top. More preferably, each module has a rectangular structure.

[0034] In some embodiments, the battery module 1 includes a rectangular cylindrical aluminum alloy battery box 101, a battery box left cover plate 102, a signal acquisition plate fixing bracket 103, a battery module connector fixing bracket 104, a battery box right cover plate 105, a square bracket 106, an L-shaped bracket 107, a battery pack 108, a fire-fighting module 109 and a signal acquisition plate 110. The battery box left cover plate 102 and the battery box right cover plate 105 cooperate with the left end and the right end of the aluminum alloy battery box 101 to seal the left end and the right end of the aluminum alloy battery box 101.

[0035] In some embodiments, the aluminum alloy battery box 101 is provided with a plurality of battery packs 108. The positive and negative electrode lead-out directions of the plurality of battery packs 108 are arranged symmetrically left and right.

[0036] In some embodiments, the lower layer battery pack 108 is arranged above the square bracket 106, and the upper layer battery pack 108 is arranged above the L-shaped bracket 107. The square bracket is a long strip-shaped bracket with a rectangular cross section, and the L-shaped bracket is a long strip-shaped bracket with an L-shaped cross section. Specifically, the L-shaped bracket and the square bracket are each two, arranged on both sides of the length direction of the battery pack, and support and limit the battery pack.

[0037] In some embodiments, the left cover plate 102 of the battery box is provided with a fire-fighting module 109 on the inner side; the fire-fighting module 109 is a finished product purchased from outside, which is used to spray aerosol for fire extinguishing after the battery catches fire.

[0038] In some embodiments, the inner side of the right cover plate 105 of the battery box is arranged with a battery module connector fixing bracket 104, and the inner side of the battery module connector fixing bracket 104 is provided with a signal acquisition plate 110 which is installed on the signal acquisition plate fixing bracket 103, wherein a plurality of power connectors and communication connectors are arranged on the battery module connector fixing bracket 104.

[0039] In some embodiments, the main control module 2 comprises a rectangular cylindrical aluminum alloy high-voltage box 201, a high-voltage box left cover plate 202, a high-voltage box connector fixing bracket 203, a high-voltage box right cover plate 204 and a control unit 205, the high-voltage box left cover plate 202 and the high-voltage box right cover plate 204 are used to cover and seal the left and right ends of the aluminum alloy high-voltage box 201, and the inner side of the high-voltage box right cover plate 204 is provided with the high-voltage box connector fixing bracket 203.

[0040] The control unit 205 is arranged in the aluminum alloy high-voltage box 201; the control unit 205 comprises a battery management unit, a DC circuit breaker is arranged on the inner side of the high-voltage box left cover plate 202; a plurality of power output connectors and communication debugging connectors are arranged on the high-voltage box connector fixing bracket 203.

[0041] In some embodiments, the aluminum alloy battery box 101 is provided with two guide rails 111 and four limiting blocks 112; the inner side of the square bracket 107 cooperates with the outer side of the guide rail 111, which is used to guide the battery module stack to be pushed into the inside of the battery box from one side of the battery box, preventing the battery module stack from tilting during the pushing process; the limiting block 112 is arranged on one side of the bottom of the aluminum alloy battery box, and the square bracket is provided with a groove matched with the limiting block on one side, which is used to limit the square bracket on the end side.

[0042] In some embodiments, a box body bottom protruding structure 113 and a box body top protruding structure 114 are arranged on the aluminum alloy battery box, which cooperate with each other to limit the stacking of the battery module.

[0043] In some embodiments, the aluminum alloy battery box is provided with a first threaded hole 115 and a second threaded hole 116 for fixing between the boxes on the end side.

[0044] The battery module 1, the main control module 2 and the base 3 in the household energy storage device are fixed by fixing the left cover of each battery module during the stacking and assembling process, so that the battery modules are fixed together and connected to form a whole.

[0045] The stacking type household energy storage device has the following advantages: the aluminum alloy material is used for the main body bearing part, so that the whole weight is lighter, the aluminum profile extrusion forming process is used, so that the process is simpler; the traditional sheet metal process is used for the left and right end cover plates and the internal support, so that the whole appearance is simple and the structure is compact; meanwhile, the modular design is used, so that the capacity expansion and maintenance are facilitated.

[0046] The stacking type household energy storage device has the following advantages: the novel inter-module fixing mode is used between the modules, so that the inter-module fixing can be completed without additional fixing parts, the material cost and the production cost can be effectively reduced; the aluminum alloy material is used for the main body bearing part, the aluminum profile extrusion forming process is used, so that the size precision is higher than that of the traditional sheet metal box body, the weight is lighter, and the appearance is more beautiful; the signal acquisition plate is fixed to one side of the battery end face, so that the overall thickness size is effectively controlled, and the assembly and wiring are facilitated.

[0047] The basic principle and main features of the utility model and the advantages of the utility model are shown and described above, and it is obvious for those skilled in the art that the utility model is not limited to the details of the above exemplary embodiments, and the utility model can be realized in other specific forms without departing from the spirit or basic features of the utility model;

[0048] Therefore, no matter from which point, the embodiments should be regarded as exemplary and non-limiting, the scope of the utility model is defined by the appended claims instead of the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the utility model.

[0049] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description manner of the specification is only for the sake of clarity, those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be combined appropriately to form other embodiments that can be understood by those skilled in the art.

Claims

1. A stacked household energy storage device, characterized by, The base, at least one battery module and the main control module are stacked from bottom to top.

2. The stacked home energy storage device of claim 1, wherein, The battery module comprises an aluminum alloy battery box, a battery box left cover plate, a battery box right cover plate and a battery pack; the battery pack is assembled on the aluminum alloy battery box through a support and is closed by the battery box left cover plate and the battery box right cover plate; the positive and negative electrode lead-out directions of the battery pack are arranged in left-right symmetry.

3. The stacked home energy storage device of claim 2, wherein, The battery pack comprises an upper layer battery pack and a lower layer battery pack; the support comprises a square support and an L-shaped support; the lower layer battery pack is arranged above the square support; and the upper layer battery pack is arranged above the L-shaped support.

4. The stacked home energy storage device of claim 1, wherein, The bottom of the aluminum alloy battery box is provided with two guide rails; the inner side of the square support cooperates with the outer side of the guide rails to guide the battery module stack to be pushed into the inside of the battery box from one side of the battery box, so as to prevent the battery module stack from tilting during the pushing process; a limiting block is arranged on one side of the bottom of the aluminum alloy battery box; and a groove matched with the limiting block is arranged on one side of the square support.

5. The stacked home energy storage device of claim 1, wherein, The bottom of the aluminum alloy battery box is provided with a box bottom protruding structure; and the top of the aluminum alloy battery box is provided with a box top protruding structure matched with the box bottom protruding structure.

6. The stacked home energy storage device of claim 2, wherein, A fire-fighting module is arranged in the battery box left cover plate.

7. The stacked home energy storage device of claim 2, wherein, The battery module comprises a battery module connector fixing support; and the battery module connector fixing support is provided with a power connector and a communication connector.

8. The stacked home energy storage device of claim 2, wherein, The battery module comprises a signal acquisition board; and the signal acquisition board is arranged on the signal acquisition board fixing support.

9. The stacked home energy storage device of claim 1, wherein, The main control module comprises an aluminum alloy high-voltage box, a high-voltage box left cover plate, a high-voltage box right cover plate, a control unit and a high-voltage box connector fixing support; the high-voltage box connector fixing support is provided with a power output connector and a communication debugging connector; and the control unit comprises a battery management unit.

10. The stacked home energy storage device of claim 9, wherein, A direct current circuit breaker is arranged on the aluminum alloy high-voltage box left cover plate.

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