Wall-mounted household energy storage battery pack

Abstract

The utility model provides a wall-mounted household energy storage battery pack which comprises a box body, a first accommodating space is arranged in the box body, and a first supporting plate and a second supporting plate which are formed by extending in the width direction of the box body and a third supporting plate and a fourth supporting plate which are formed by extending in the height direction of the box body are arranged on the periphery of the first accommodating space; the first accommodating space is defined by a first supporting plate, a second supporting plate, a third supporting plate and a fourth supporting plate, a plurality of battery cells are mounted in the first accommodating space, and the plurality of battery cells are fixed by at least one fixing strip which is arranged on the opening side of the first accommodating space and is detachably connected with the first supporting plate and the second supporting plate; and one side of the wall-mounted assembly is connected with the box body, and the other side of the wall-mounted assembly is connected with a wall body. The battery cells are directly fixed in the box body, so that the assembly process of the battery module is reduced, the structure of the wall-mounted household storage battery pack can be simplified, and the space utilization rate is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of power energy storage system, specifically relates to a wall -hanging household energy storage battery pack. BACKGROUND

[0002] The wall -hanging household energy storage system has efficient energy management capability, can store the electric energy generated by renewable energy power generation such as solar energy and wind energy, and release when needed to supply the family to use, and this energy storage mode helps to balance the power supply and demand relationship, improves energy utilization efficiency, and simultaneously, the wall -hanging household energy storage system can also be used as emergency power supply when the power grid is powered off, ensures the continuity and stability of household electricity.

[0003] At present, most of the household energy storage battery packs are assembled into modules by battery cells, and then assembled into the battery pack, forming a three-level assembly form, and the battery pack assembled according to the above assembly form and the battery pack assembled into the box need more assembly structures, for example, the side plate and end plate of the module itself (module structure), and the cross beam and longitudinal beam originally used to separate the module and help the module to connect (battery pack assembly support structure), which leads to low space utilization of the battery pack, and the battery module is hung on the wall with the box, and after long-term use, the battery module will be downwardly collapsed due to the effect of the earth's gravity, and the interface of the battery is easy to be loose and fall off due to the influence of external force or placement direction, and the battery cannot supply power normally after falling off. UTILITY MODEL CONTENTS

[0004] In order to overcome the defects in the prior art, the utility model embodiment provides a wall -hanging household energy storage battery pack, which directly fixes the battery cell in the box, reduces the battery module assembly process, can simplify the structure of the wall -hanging household energy storage battery pack, and improves the space utilization.

[0005] In order to achieve the above purpose, the utility model adopts the technical scheme that:

[0006] The utility model discloses a wall -hanging household energy storage battery pack, which comprises:

[0007] The box is provided with a first containing space, a first support plate and a second support plate extending along the width direction of the box are arranged around the first containing space, a third support plate and a fourth support plate extending along the height direction of the box are arranged around the first containing space, the first containing space is enclosed by the first support plate, the second support plate, the third support plate and the fourth support plate, a plurality of battery cells are installed in the first containing space, and the plurality of battery cells are fixed by at least one fixing strip arranged at the opening side of the first containing space and detachably connected with the first support plate and the second support plate.

[0008] The wall -hanging assembly is connected with the box on one side and connected with the wall on the other side.

[0009] The above technical solution reduces the battery module assembly process and the number of parts by directly fixing the battery cells in the box, simplifies the structure of the wall-mounted household energy storage battery pack, improves the space utilization in the box, can reduce the battery pack mass, and increase the battery energy density. By simplifying the manufacturing and assembly process of the battery pack, it can improve production efficiency and further reduce the manufacturing cost of the battery pack. When the battery cells are installed in the box, the battery cells and the box are fixedly connected by support plates and fixing strips, which improves the stability of the battery cell installation and makes the operation of the entire wall-mounted household energy storage battery pack more stable and reliable.

[0010] Furthermore, the first, third, and fourth support plates are each provided with through-holes, and the second support plate is provided with connection holes corresponding to the through-holes in the first, third, and fourth support plates. The second support plate is detachably connected to the third and fourth support plates via bolts passing through the through-holes in the third and fourth support plates and the connection holes in the second support plate. Given the thickness tolerances of battery cells, providing a detachable second support plate allows for better installation of multiple battery packs within the first accommodation space, preventing the battery packs from being unable to be assembled due to the fixation of the second support plate.

[0011] Furthermore, an insulating film is provided on the side of the inner wall of the box in contact with the battery cell, the first support plate, the third support plate, and the fourth support plate, and an insulating sheet is provided on the side of the second support plate facing the battery cell.

[0012] An insulating film is provided on the inner wall of the box body, the first support plate, the third support plate and the fourth support plate that are in contact with the battery cells inside the box body, which can isolate the box body, the support plate and the battery cells, thereby ensuring the overall stable operation of the household energy storage battery pack and improving the safety of the household energy storage battery pack. The insulating sheet is an EVA insulating sheet. Due to the tolerance of the thickness of the battery cells, the EVA insulating sheet can be compressed when the second support plate is connected to the third support plate and the fourth support plate. When tightening the bolts, the EVA insulating sheet can absorb the tolerance in the thickness direction of the battery cells, thereby better limiting the movement of the battery cells in the height direction along the box body.

[0013] Furthermore, the fixing bar includes a main body extending along the height of the box and a cable harness portion connected to the main body. The cable harness portion is provided with cable harness holes. Bolt holes are provided at both ends of the main body. The fixing bar is connected to the first and second support plates via bolts passing through through holes in the first support plate and connecting holes in the second support plate. The cable harness holes are used to bundle the temperature and voltage collection cables.

[0014] Furthermore, when the fixing bar is connected to the first and second support plates, the fixing bar contacts the battery cell and is located in the middle of the battery cell. The body is provided with a through hole corresponding to the position of the explosion-proof valve of the battery cell. The fixing bar is fixed in the middle of the battery cell, and the through hole is provided to prevent the explosion-proof valve from opening when the internal pressure of the battery exceeds a preset safety value.

[0015] Furthermore, the plurality of battery cells are evenly arranged along the height and width of the box, and an epoxy plate is provided between at least two rows of battery cells arranged along the width of the box to fill the gaps between the rows of battery cells and restrict the positional movement of the battery cells.

[0016] Furthermore, the box body is provided with a second storage space, which is enclosed by the second support plate and the inner wall of the box body. A removable panel is provided in the second storage space, and the removable panel is removably connected to the third support plate. The removable panel can be removed to facilitate maintenance of the electrical components in the second storage space without disassembling the box body.

[0017] Furthermore, the box body is provided with a box cover, a mounting hole is provided on a side of the box body away from the box cover, and the wall-mounted component is connected to the side of the box body where the mounting hole is provided.

[0018] Furthermore, the wall-mounted assembly includes:

[0019] a fixing plate, the fixing plate comprising a fixing plate body, a first fixing portion and a second fixing portion connected to the fixing plate body and extending in a direction away from the fixing plate body, the first fixing portion having a bent portion extending from an extending end of the first fixing portion in a first direction, and a through hole being provided in the fixing plate body;

[0020] The bracket is located on one side of the fixing plate where the first fixing part and the second fixing part are provided, and includes a bracket body and a connecting part connected to the bracket body. The connecting part extends toward the fixing part and forms a card slot, and the card slot is clamped on the first fixing part. A through hole is provided on the bracket body.

[0021] The bracket and the fixing plate are connected by the bending portion of the first fixing portion being clamped in the clamping groove of the connecting portion. The box body and the fixing plate can be installed and fixed by relying on the dead weight of the box body. The installation method is simple and easy to operate.

[0022] Furthermore, the connecting portion includes a first connecting portion and a second connecting portion spaced apart. The connecting portion includes a first extension portion extending perpendicularly to the bracket body and a second extension portion extending from the bottom of the first extension portion in a second direction. The second extension portion and the bracket body form a slot with an angle of less than or equal to 90 degrees. Both the first and second connecting portions have slots formed therein that engage the first fixing portions on both sides of the fixing plate, thereby ensuring a more stable mounting of the box on the wall.

[0023] Due to the application of the above technical solution, the utility model has the following advantages compared with the prior art:

[0024] 1. This application reduces the battery module assembly process and the number of parts by directly fixing the battery cells in the box, simplifies the structure of the household energy storage battery pack, improves the space utilization in the box, can reduce the weight of the battery pack, and increase the battery energy density. By simplifying the manufacturing and assembly process of the household energy storage battery pack, it can improve production efficiency and further reduce the manufacturing cost of the household energy storage battery pack. When the battery cells are assembled in the box, the battery cells and the box are fixedly connected by support plates and fixing strips. The fixing structure is simple, which improves the stability of the battery cell installation and makes the operation of the household energy storage battery pack more stable and reliable.

[0025] 2. This application provides a detachable panel to facilitate disassembly, avoiding the need to disassemble the box to repair the electrical components inside the box.

[0026] 3. This application sets a through hole and a slot on the bracket, sets a bent portion on the fixing plate, connects the bracket and the box body by bolts, and at the same time, the bent portion of the fixing plate is stuck in the slot. The box body and the fixing plate can be installed and fixed by relying on the dead weight of the box body. The structure is simple and the installation is convenient.

[0027] In order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] Figure 1 This is a three-dimensional diagram of a wall-mounted household energy storage battery pack provided by an embodiment of the utility model;

[0030] Figure 2This is a diagram of the internal structure of a box provided by an embodiment of the utility model;

[0031] Figure 3 This is a structural diagram of a fixing bar provided by an embodiment of the present utility model;

[0032] Figure 4 This is a rear view of a box provided by an embodiment of the utility model;

[0033] Figure 5 It is an enlarged view of a wall-mounted component provided in an embodiment of the present utility model.

[0034] The figure marks of the above drawings are: 1. box body; 2. wall-mounted assembly; 3. box cover; 4. battery cell; 5. first support plate; 6. second support plate; 7. third support plate; 8. fourth support plate; 9. fixing bar; 10. connecting hole; 11. insulating sheet; 12. wire harness part; 13. through hole; 14. wire harness hole; 15. epoxy board; 16. detachable panel; 17. fixing plate; 18. bracket; 19. first fixing part; 20. second fixing part; 21. bending part; 22. first connecting part; 23. second connecting part; 24. first extending part; 25. second extending part. DETAILED DESCRIPTION

[0035] The following will be combined with the accompanying drawings of the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. In addition, the drawings of the present invention are only for simple schematic illustration and are not depicted according to actual size. Please note in advance.

[0036] In the present invention, it should be noted that the terms "upper", "lower", "inside", "outside", "forward", "back", "between", "close to", "far away" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. It should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" 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 direct connection or an indirect connection. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0037] It should be understood that although terms such as "first," "second," and "third" may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are primarily used to distinguish one component from another, or one signal from another. In addition, the term "or" as used herein may include any one or more combinations of the associated listed items, as appropriate.

[0038] Reference Figures 1-5 As shown, an embodiment of the present application provides a wall-mounted household energy storage battery pack, comprising: a box body 1 and a wall-mounted component 2, wherein the box body 1 is provided with a box cover 3, and a mounting hole is provided on the side of the box body 1 facing away from the box cover 3, one side of the wall-mounted component 2 is connected to the side of the box body 1 provided with the mounting hole, and the other side is connected to the wall, so that the box body 1 is hung on the wall, wherein a plurality of battery cells 4 are installed in the box body 1.

[0039] Specifically, such as Figure 2 As shown, a first accommodating space is provided in the box body 1, and a first support plate 5 and a second support plate 6 extending along the width direction of the box body 1 are provided around the first accommodating space, and a third support plate 7 and a fourth support plate 8 extending along the height direction of the box body 1 are provided. The first accommodating space is enclosed by the first support plate 5, the second support plate 6, the third support plate 7 and the fourth support plate 8. A plurality of battery cells 4 are installed in the first accommodating space, and the plurality of battery cells 4 are fixed by at least one fixing bar 9 arranged on the opening side of the first accommodating space and detachably connected to the first support plate 5 and the second support plate 6.

[0040] Through the above-described structure, the wall-mounted household energy storage battery pack in the embodiment of the present application directly secures the battery cells within the housing 1. Compared to conventional battery pack assembly methods, this reduces the battery module assembly process, reduces the number of components, simplifies the household energy storage battery pack structure, improves the space utilization of the housing, reduces the battery pack mass, and increases the battery energy density. By simplifying the manufacturing and assembly process of the household energy storage battery pack, production efficiency can be improved, further reducing the manufacturing cost of the household energy storage battery pack. When the battery cells are assembled within the housing, they are secured within the housing via support plates and fixing bars. This simple fixing structure improves the stability of the battery cell installation, making the operation of the household energy storage battery pack more stable and reliable.

[0041] In order to improve the overall strength of the box body 1, in a possible embodiment, the first support plate 5, the third support plate 7 and the fourth support plate 8 are all made of metal materials, and the first support plate 5, the third support plate 7 and the fourth support plate 8 are all connected to the box body 1 by welding.

[0042] In order to improve the operational stability of the battery cell 4, an insulating film is provided on the inner wall of the box body 1 on the side opposite to the box cover 3, the first support plate 5, the third support plate 7, and the fourth support plate 8. The insulating film can be made of a known material, such as PC film.

[0043] In a possible embodiment, in order to facilitate the installation of multiple battery cells 4 in the box body 1, the second support plate 6 is detachably connected to the third support plate 7 and the fourth support plate 8. Figure 2 As shown, through holes are provided at the bottom of the third support plate 7 and the fourth support plate 8, and connecting holes 10 corresponding to the through holes on the third support plate 7 and the fourth support plate 8 are provided on the second support plate 6. The second support plate 6 is connected to the third support plate 7 and the fourth support plate 8 by bolts passing through the through holes at the bottom of the third support plate 7 and the fourth support plate 8 and the connecting holes 10 on the second support plate 6, so that the second support plate 6 is detachable.

[0044] Due to the tolerances between the dimensions of the battery cells 4, in one possible embodiment, when the second support plate 6 is connected to the third support plate 7 and the fourth support plate 8, an insulating sheet 11 is provided on the side of the second support plate 6 facing the battery cells 4. The insulating sheet 11 can be made of a compressible EVA insulating sheet. When the bolts are tightened, the EVA insulating sheet can absorb the tolerances in the thickness direction of the battery cells, thereby better limiting the movement of the battery cells.

[0045] When multiple battery cells 4 are installed in the first accommodation space, the multiple battery cells 4 are evenly arranged along the height and width directions of the box body 1. An epoxy plate 15 is provided between at least two columns of battery cells 4 arranged along the width direction of the box body 1 to fill the gaps between the columns and further fix the battery cells 4.

[0046] When the battery cell 4 is installed in the first accommodation space, the battery cell 4 is fixed by connecting the first support plate 5 and the second support plate 6 through the fixing strip 9. Figure 3 As shown, the fixing strip 9 includes a main body extending along the height direction of the box body 1 and a wire harness portion 12 connected to the main body. The wire harness portion 12 is arranged on both sides of the main body. The wire harness portion 12 is provided with a wire harness hole 14. Bolt holes are opened at both ends of the main body. The fixing strip 9 is connected to the first support plate 5 and the second support plate 6 by bolts passing through the through holes on the first support plate 5 and the connecting holes on the second support plate 6.

[0047] In a possible embodiment, when the fixing bar 9 is connected to the first support plate 5 and the second support plate 6, the fixing bar 9 contacts the end of the battery cell 4 and is located in the middle of the end of the battery cell 4, and a through hole corresponding to the position of the explosion-proof valve of the battery cell 4 is opened on the main body.

[0048] like Figure 2As shown, when the plurality of battery cells 4 are installed in the first accommodating space, each column of battery cells 4 only needs to be fixed by one fixing strip 9. The fixing mode of the plurality of battery cells 4 in the embodiment of the application is more firm compared with the fixing mode of the battery module in the prior design, and the installation mode is simple. The direct placement of the battery cells 4 in the first accommodating space can avoid the situation that the battery cannot supply power normally after falling off in the prior design.

[0049] As shown in Figure 2 As shown, the box body 1 further comprises a second accommodating space, which is surrounded by the second support plate 6 and the inner wall of the box body 1. The second accommodating space is provided with a detachable panel 16, which is located below the second support plate 6 and connected to the second support plate 6 by bolts. The detachable panel 16 is provided with a battery management system, a connector, a circuit breaker, a self-locking switch, etc. When the electrical elements have problems, the detachable panel 16 can be disassembled for maintenance, avoiding the removal of the entire box body 1, which is simple in structure and convenient to operate.

[0050] As shown in Figures 4-5 The wall hanging assembly 2 comprises a fixed plate 17 and a bracket 18 connected to the fixed plate 17. The fixed plate 17 comprises a fixed plate body and a first fixing portion 19 connected to the fixed plate body. The first fixing portion 19 extends from the fixed plate body in a direction away from the fixed plate body. The first fixing portion 19 has a bending portion 21 extending from the extension end of the first fixing portion 19 in a first direction. The fixed plate body is provided with a through hole, and a bolt is arranged in the through hole to fix the fixed plate 17 on the wall.

[0051] The bracket 18 is located on the side of the fixed plate 17 where the first fixing portion 19 is located. The bracket 18 comprises a bracket body and a connecting portion connected to the bracket body. The bracket body is provided with a through hole, and a bolt is arranged in the through hole to connect the bracket 18 to the mounting hole on the box body 1. The connecting portion extends towards the first fixing portion 19 and forms a clamping groove on the bending portion 21 of the first fixing portion 19. The box body 1 can be hung on the fixed plate 17 by relying on the self-weight of the box body 1.

[0052] As shown in Figure 4 In one possible embodiment, the connecting portion comprises a first connecting portion 22 and a second connecting portion 23 arranged at intervals. The first connecting portion 22 is arranged above the second connecting portion 23. The connecting portion has a first extension portion 24 extending in a direction perpendicular to the bracket body and a second extension portion 25 extending from the bottom of the first extension portion 24 in a second direction. The second extension portion 25 and the bracket body form a clamping groove with an included angle less than or equal to 90°.

[0053] In order to avoid the box 1 from tilting when hanging on the wall, in a possible embodiment, the fixing plate 17 further comprises a second fixing part 20 extending from the fixing plate body in a direction away from the fixing plate body, and the second fixing part 20 and the first extension part 24 on the second connecting part 23 form a limit, thereby avoiding the box 1 from moving or tilting.

[0054] It should be noted that the height direction of the box 1 in the above embodiment is the direction from the first accommodating space to the second accommodating space, and the first direction and the second direction are only for illustrating that the directions of extension are different between different structures, and the specific extension direction is not limited.

[0055] The principle and implementation mode of the present application are described in the specific embodiments, and the above embodiment is only used to help understand the method and core idea of the present application; meanwhile, for the general skilled in the art, the specific implementation mode and application range will be changed according to the idea of the present application, and the above description should not be understood as the limitation of the present application.

Claims

1. A wall-mounted household energy storage battery pack, characterized in that: include: A box body, wherein a first accommodating space is provided in the box body, and a first support plate and a second support plate extending along the width direction of the box body are provided around the first accommodating space, and a third support plate and a fourth support plate extending along the height direction of the box body are provided. The first accommodating space is enclosed by the first support plate, the second support plate, the third support plate and the fourth support plate. A plurality of battery cells are installed in the first accommodating space, and the plurality of battery cells are fixed by at least one fixing bar provided on an opening side of the first accommodating space and detachably connected to the first support plate and the second support plate. A wall-mounted component is connected to the box on one side and to the wall on the other side.

2. A wall-mounted household energy storage battery pack according to claim 1, characterized in that: The first support plate, the third support plate and the fourth support plate are all provided with through holes, the second support plate is provided with connecting holes corresponding to the through holes on the first support plate, the third support plate and the fourth support plate, and the second support plate is detachably connected to the third support plate and the fourth support plate by bolts passing through the through holes of the third support plate and the fourth support plate and the connecting holes on the second support plate.

3. A wall-mounted household energy storage battery pack according to claim 1, characterized in that: An insulating film is provided on the side of the inner wall of the box in contact with the battery core, the first support plate, the third support plate and the fourth support plate. An insulating sheet is provided on the side of the second support plate facing the battery core.

4. A wall-mounted household energy storage battery pack according to claim 1, characterized in that: The fixing strip includes a main body extending along the height direction of the box body and a wire harness portion connected to the main body, the wire harness portion is provided with a wire harness hole, and bolt holes are opened at both ends of the main body. The fixing strip is connected to the first support plate and the second support plate by bolts passing through the through holes on the first support plate and the connecting holes on the second support plate.

5. A wall-mounted household energy storage battery pack according to claim 4, characterized in that: When the fixing bar is connected to the first support plate and the second support plate, the fixing bar contacts the battery core and is located in the middle of the battery core. A through hole corresponding to the position of the explosion-proof valve of the battery core is opened on the body.

6. A wall-mounted household energy storage battery pack according to claim 1, characterized in that: The plurality of battery cells are uniformly arranged along the height direction and the width direction of the box body, and an epoxy plate is provided between at least two rows of battery cells arranged along the width direction of the box body.

7. The wall-mounted household energy storage battery pack according to claim 1, characterized in that: A second accommodating space is further provided in the box body, and the second accommodating space is enclosed by the second support plate and the inner wall of the box body. A detachable panel is provided in the second accommodating space, and the detachable panel is detachably connected to the third support plate.

8. The wall-mounted household energy storage battery pack according to claim 1, characterized in that: The box body is provided with a box cover, a side of the box body facing away from the box cover is provided with a mounting hole, and the wall-mounted component is connected to the side of the box body provided with the mounting hole.

9. The wall-mounted household energy storage battery pack according to claim 1, characterized in that: The wall-mounted assembly comprises: a fixing plate, the fixing plate comprising a fixing plate body, a first fixing portion and a second fixing portion connected to the fixing plate body and extending in a direction away from the fixing plate body, the first fixing portion having a bent portion extending from an extending end of the first fixing portion in a first direction, and a through hole being provided in the fixing plate body; The bracket is located on one side of the fixing plate where the first fixing part and the second fixing part are provided, and includes a bracket body and a connecting part connected to the bracket body. The connecting part extends toward the fixing part and forms a card slot, and the card slot is clamped on the first fixing part. A through hole is provided on the bracket body.

10. A wall-mounted household energy storage battery pack according to claim 9, characterized in that: The connecting portion includes a first connecting portion and a second connecting portion arranged at intervals, and the connecting portion has a first extension portion extending in a direction perpendicular to the bracket body and a second extension portion extending from the bottom of the first extension portion to the second direction, and a card slot with an angle less than or equal to 90° is formed between the second extension portion and the bracket body.

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