A battery unit and stacked energy storage battery

Abstract

The utility model discloses a battery unit and a stacked energy storage battery, wherein the battery unit comprises a top plate and a bottom plate arranged at intervals from top to bottom, a surrounding wall is installed between the top plate and the bottom plate; brackets are installed facing each other on the bottom plate located on the inner side of the surrounding wall, and batteries are stacked together between the paired brackets; vertical beams extend from the sides of the brackets, the vertical beams pass through the top plate upwards, the top ends of the vertical beams located above the top plate constitute insertion angles, and the bottom ends of the vertical beams form indentations that match the shape of the insertion angles; when in use, multiple battery units are stacked up and down, the top ends of the vertical beams protruding from the lower battery units are inserted into the upper battery units, the insertion angles are matched with the indentations at the bottom ends of the upper vertical beams, so that the battery units are stacked in a centered, reliable, and rapid manner, and the vertical beams can play an overall structural support role, the operation is convenient, and the flexibility and reliability of actual use are effectively guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage batteries, in particular to a battery unit and a stacked energy storage battery. Background Art

[0002] In order to expand the capacity of the energy storage device, multiple battery packs are usually stacked inside a cabinet or rack for use, and the voltage is changed by connecting the multiple battery packs in series or parallel to meet usage requirements.

[0003] In the prior art, when stacking adjacent battery packs, misalignment is very likely to occur, which is not conducive to the precise alignment between the battery packs. Moreover, after stacking, adjacent battery packs generally need to be relatively fixed by screws, which is cumbersome to operate, inconvenient for on-site maintenance and transfer, and has poor flexibility in actual use. Utility Model Content

[0004] In order to solve the above problems, the present application provides a battery cell and a stacked energy storage battery with a reasonable structure, so that the battery cells can be stacked in a centralized, reliable and fast manner, and the vertical beams can play an overall structural support role, which is easy to operate and effectively guarantees flexibility and reliability in actual use.

[0005] The technical solution adopted by the utility model is as follows:

[0006] A battery unit, the battery unit comprises a top plate and a bottom plate arranged at an interval up and down, a surrounding wall is installed between the top plate and the bottom plate; brackets are installed facing each other on the bottom plate located inside the surrounding wall, and batteries are stacked together between the paired brackets; vertical beams extend from the sides of the brackets, the vertical beams pass upward through the top plate, the top ends of the vertical beams above the top plate constitute plug-in angles, and the bottom ends of the vertical beams form a concave notch that matches the shape of the plug-in angles.

[0007] As a further improvement of the above technical solution:

[0008] The cross-section of the vertical beam and the plug-in angle is an "L"-shaped right-angle structure. The cross-sectional size of the plug-in angle is smaller than that of the vertical beam. A right-angle hole is opened on the top plate for the plug-in angle to pass upward; a through hole is opened on the bottom plate, and the through hole is directly opposite to the right-angle hole up and down.

[0009] The vertical beam located outside the insertion angle is folded and extended to form a folded wall, and the top surface of the folded wall is tightly fitted and locked with the inner top surface of the top plate.

[0010] The top surface of the top plate is convexly formed along the circumference to form a convex ridge, and the bottom surface of the bottom plate is formed along the circumference to form a groove for accommodating the sealing member, and the shape of the groove is adapted to the shape of the convex ridge.

[0011] A lower connector is installed on the bottom plate, and an upper connector is installed on the top plate directly above the lower connector. The lower connector is plug-fitted with the upper connector of the adjacent battery unit.

[0012] The bottom plate extends upward to form a plurality of convex columns, and the bottom end of the bracket is folded and extended to form a flange that fits and locks with the top surface of the convex column; a breathable member is installed through the bottom plate from top to bottom.

[0013] The top plate and the surrounding wall are welded as one or are formed as one, and the bracket and the vertical beam are welded as one or are formed as one.

[0014] A stacked energy storage battery comprises two or more battery cells according to any one of claims 1 to 5, wherein the battery cells are stacked up and down, and the vertical beam protruding upward in the lower battery cell extends upward into the upper battery cell, and is assembled by the plug-in corner end and the concave notch at the bottom end of the vertical beam in the upper battery cell; a main box is mounted on the top of the uppermost battery cell, and a bottom support assembly is mounted on the bottom end of the lowermost battery cell, and a supporting wheel group is installed on the bottom end of the bottom support assembly; the energy storage battery is an overall rectangular structure stacked vertically.

[0015] As a further improvement of the above technical solution:

[0016] The bottom surface of the main box is provided with a through hole for inserting the insertion angle, and the top surface of the bottom support assembly extends upward to form the same insertion angle; the main box is sealed with the top battery unit, and the bottom support assembly is sealed with the bottom battery unit.

[0017] The structure of the bottom support assembly is as follows: it includes a load-bearing plate, a plug-in angle is installed on the top surface of the load-bearing plate facing upward, a support plate and a cover plate are stacked in sequence above the load-bearing plate, a sealing groove for fitting a sealing ring is formed on the bottom surface of the cover plate along the circumferential direction, and the sealing ring is pressed between the cover plate and the load-bearing plate; it also includes a loop connector electrically connected to the bottommost battery cell.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model has a compact and reasonable structure and is easy to operate. By stacking multiple battery units up and down, the top of the vertical beam protruding from the lower battery unit is inserted into the upper battery unit, and the insertion angle is matched with the concave notch at the bottom end of the upper vertical beam, so that the battery units can be quickly stacked in the center, and the locking of fasteners such as screws between adjacent battery units is omitted. The vertical beam can play a structural supporting role for the stack as a whole, effectively ensuring the flexibility and reliability of actual use.

[0020] The utility model also has the following advantages:

[0021] When adjacent battery cells are quickly stacked up and down through the insertion angles and the inner concave notches, the lower connector at the bottom of the upper battery cell is plugged in and matched with the upper connector at the top of the lower battery cell, and the seal in the groove on the bottom surface of the upper battery cell is sealed with the ridge on the top surface of the lower battery cell, so that the centering stacking and electrical connection between the upper and lower battery cells can be successfully completed;

[0022] The air permeable parts on the bottom plate enable the internal space of the battery cell to communicate with the external atmosphere, effectively ensuring the balance of the air pressure in the battery cell. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of the battery unit of the utility model.

[0024] Figure 2 This is an exploded view of the battery unit of the present invention.

[0025] Figure 3 for Figure 2 A partial enlarged view of point A in the middle.

[0026] Figure 4 This is a schematic diagram of the assembly of the upper and lower battery units of the present invention when they are stacked (surrounding walls, etc. are omitted).

[0027] Figure 5 for Figure 4 A partial enlarged view of point B in the middle.

[0028] Figure 6 This is a schematic diagram of the battery units of the present invention after being stacked.

[0029] Figure 7 This is an exploded view of the stacked energy storage battery of the utility model.

[0030] Figure 8 It is an exploded view of the bottom support assembly of the utility model.

[0031] Among them: 1. Top plate; 2. Surrounding wall; 3. Upper connector; 4. Bracket; 5. Vertical beam; 6. Breathable part; 7. Bottom plate; 8. Lower connector; 9. Sealing part;

[0032] 10. battery unit; 20. main unit box; 30. wall surface; 40. bottom support assembly; 50. support wheel assembly; 60. support plate; 70. loop connector;

[0033] 11. convex edge; 12. right angle hole; 13. mounting hole; 111. locking hole;

[0034] 21. External interface;

[0035] 41. Cover plate; 42. Support plate; 43. Load-bearing plate; 44. Grounding screw;

[0036] 51. Folding wall; 52. Insertion angle; 53. Inward concave notch;

[0037] 71. through hole; 72. boss; 701. cover. DETAILED DESCRIPTION

[0038] The specific implementation of the present utility model is described below in conjunction with the accompanying drawings.

[0039] like Figure 1 and Figure 2 As shown, a battery unit of this embodiment, the battery unit 10 includes a top plate 1 and a bottom plate 7 arranged at intervals from top to bottom, and a surrounding wall 2 is installed between the top plate 1 and the bottom plate 7; brackets 4 are installed facing each other on the bottom plate 7 located inside the surrounding wall 2, and batteries are stacked together between the paired brackets 4; vertical beams 5 extend from the sides of the brackets 4, and the vertical beams 5 pass through the top plate 1 upwards, and the top ends of the vertical beams 5 located above the top plate 1 form an insertion angle 52, and the bottom ends of the vertical beams 5 form an inner concave notch 53 that matches the shape of the insertion angle 52, as shown in FIG. Figure 5 shown.

[0040] In this embodiment, multiple battery cells 10 can be stacked up and down, and the top of the protruding vertical beam 5 of the lower battery cell 10 is inserted into the upper battery cell 10, and the insertion corner 52 is matched with the concave notch 53 at the bottom end of the upper vertical beam 5, so as to realize the rapid centering stacking between the battery cells 10, and also eliminate the locking installation of fasteners such as screws between adjacent battery cells 10. The vertical beam 5 can play a structural support role for the entire stack, which is convenient for the actual stacking operation and effectively ensures the stacking effect.

[0041] The cross-section of the vertical beam 5 and the plug-in angle 52 is an "L"-shaped right-angle structure. The cross-sectional dimension of the plug-in angle 52 is smaller than the cross-sectional dimension of the vertical beam 5. A right-angle hole 12 is provided on the top plate 1 for the plug-in angle 52 to pass upward. Figure 3 As shown; a through hole 71 is opened on the bottom plate 7, and the through hole 71 is directly opposite to the right-angle hole 12. In actual stacking, the top insertion corner 52 of the lower battery unit 10 passes upward through the through hole 71 on the bottom surface of the upper battery unit 10 and is assembled with the concave notch 53.

[0042] In this embodiment, by setting the vertical beam 5 and the insertion angle 52 to an L-shaped cross-sectional shape, the vertical beam 5 is effectively guaranteed to support the overall structure and the stability of the overall structure is effectively guaranteed.

[0043] like Figure 4 As shown, the vertical beam 5 located outside the insertion angle 52 is folded and extended to form a folded wall 51, and the top surface of the folded wall 51 is fitted and locked with the inner top surface of the top plate 1 to achieve the assembly between the vertical beam 5 and the top plate 1.

[0044] The top surface of the top plate 1 is convexly formed along the circumference to form a convex ridge 11 , and the bottom surface of the bottom plate 7 is formed along the circumference to form a groove for accommodating the sealing member 9 , and the shape of the groove is adapted to the shape of the convex ridge 11 .

[0045] During actual stacking, the ridge 11 on the top surface of the lower battery unit 10 is fitted to the seal 9 on the bottom surface groove of the upper battery unit 10 , and the reliability and stability of the stacking between the upper and lower battery units 10 are effectively ensured through the sealed fitting.

[0046] A lower connector 8 is installed on the bottom plate 7 , and an upper connector 3 is installed on the top plate 1 located directly above the lower connector 8 . The lower connector 8 is plug-fitted with the upper connector 3 of the adjacent battery unit 10 .

[0047] In actual operation, when adjacent battery cells 10 are quickly stacked up and down via the insertion corners 52 and the recessed notches 53, the lower connector 8 at the bottom of the upper battery cell 10 is plugged in and matched with the upper connector 3 at the top of the lower battery cell 10, and the seal 9 in the groove on the bottom surface of the upper battery cell 10 is sealed with the ridge 11 on the top surface of the lower battery cell 10, so that the centering stacking and electrical connection between the upper and lower battery cells 10 can be successfully completed.

[0048] In this embodiment, the top plate 1 is provided with a mounting hole 13 for the upper connector 3 to fit through upward, and the bottom plate 7 is provided with a hole for the lower connector 8 to fit through downward.

[0049] A plurality of protrusions 72 are formed on the bottom plate 7 and extend upward. The bottom end of the bracket 4 is folded and extended to form a flange that fits and locks with the top surface of the protrusion 72 .

[0050] In this embodiment, an upward positioning pin can also be set between the bosses 72 to ensure the mounting position of the bracket 4 relative to the base plate 7 through the positioning pin, and then the fastener is passed downward through the flange and locked on the boss 72 to achieve the installation of the bracket 4 on the base plate 7.

[0051] In this embodiment, the paired brackets 4 are used to stack batteries vertically or horizontally, and the battery stacking is limited by the brackets 4 combined with the vertical beams 5 with an L-shaped cross-section.

[0052] A breathable member 6 is installed through the bottom plate 7 from top to bottom.

[0053] In this embodiment, the air permeable member 6 on the bottom plate 7 enables the internal space of the battery cell 10 to communicate with the external atmosphere, thereby effectively ensuring the balance of the air pressure in the battery cell 10 .

[0054] The air-permeable member 6 in this embodiment can be a standard commercially available product in the prior art, and can be used to balance the air pressure in the battery cell 10 .

[0055] The top plate 1 and the surrounding wall 2 are welded into one body or formed into one body, and the bracket 4 and the vertical beam 5 are welded into one body or formed into one body.

[0056] During actual assembly, the top plate 1 and the surrounding wall 2 are installed together on the bottom plate 7 facing downward, and the bottom edge of the surrounding wall 2 is matched with the bottom plate 7 via a step; after assembly, fasteners and / or glue can be used to further ensure the fastening between the surrounding wall 2 and the bottom plate 7.

[0057] In this embodiment, the paired brackets 4 are mainly used for limiting the placement of the batteries, and the vertical beams 5 are mainly used to achieve rapid centering and stacking between the upper and lower battery units 10, and the vertical beams 5 are used to bear the load of the structure; in actual operation, the brackets 4 and the vertical beams 5 can be integrated, which not only reduces the number of parts and facilitates assembly, but also further ensures the strengthening of the structural frame of the battery unit 10.

[0058] This embodiment also proposes a stacked energy storage battery, such as Figure 6 and Figure 7 As shown, it includes more than two battery cells 10, and the battery cells 10 are stacked up and down. The vertical beam 5 protruding upward in the lower battery cell 10 extends upward to the upper battery cell 10, and is assembled by the end of the plug-in angle 52 and the concave notch 53 at the bottom end of the vertical beam 5 in the upper battery cell 10; the top of the uppermost battery cell 10 is equipped with a main box 20, and the bottom of the lowermost battery cell 10 is equipped with a bottom support assembly 40, and the bottom end of the bottom support assembly 40 is installed with a supporting wheel group 50; the energy storage battery as a whole is a rectangular structure stacked vertically.

[0059] In this embodiment, a lower connector 8 is installed on the bottom surface of the main box 20 for plugging and connecting with the connector 3 on the top surface of the adjacent battery unit 10. An external interface 21 is also installed on the side of the main box 20 for electrically connecting with an external user.

[0060] In this embodiment, the main box 20 can be configured with components according to the management requirements of the batteries in the existing energy storage batteries. In addition, the main box 20 can also be equipped with a power display, a usage status light, etc. according to actual usage requirements to facilitate use;

[0061] The bottom surface of the main box 20 is provided with a through hole 71 for inserting the insertion corner 52, and the top surface of the bottom support assembly 40 extends upward to form the same insertion corner 52; the main box 20 and the topmost battery cell 10 are sealed together, and the bottom support assembly 40 and the bottommost battery cell 10 are sealed together.

[0062] In this embodiment, the same insertion angle 52 structure can be set between the main box 20 and the battery cell 10, between adjacent battery cells 10, and between the battery cell 10 and the bottom support assembly 40 to facilitate rapid centering and stacking. The same sealing structure can also be set to effectively facilitate operational flexibility and applicability in actual use.

[0063] like Figure 8 As shown, the structure of the bottom support assembly 40 is as follows: it includes a load-bearing plate 43, the top surface of the load-bearing plate 43 is installed with a plug-in angle 52 facing upward, the support plate 42 and the cover plate 41 are stacked in sequence above the load-bearing plate 43, and the bottom surface of the cover plate 41 forms a sealing groove for fitting a sealing ring along the circumferential direction, and the sealing ring is pressed between the cover plate 41 and the load-bearing plate 43; it also includes a loop connector 70 electrically connected to the bottommost battery cell 10.

[0064] In this embodiment, a sealing ring is provided between the cover plate 41 and the bearing plate 43 for sealing installation, and the support plate 42 is provided therebetween to effectively fill the gap between the cover plate 41 and the bearing plate 43 and improve the structural strength.

[0065] In this embodiment, the circumferential edge of the cover plate 41 extends toward the load-bearing plate 43 , and the cover plate 41 covers the support plate 42 and the load-bearing plate 43 from top to bottom; and grounding screws 44 may also be installed on the edge of the cover plate 41 .

[0066] In actual operation, a cover shell 701 may also be installed on the bottom surface of the bearing plate 43 to cover and protect the loop connector 70 from bottom to top.

[0067] The usage of the utility model is:

[0068] Place the bottom support assembly 40 at a preset position, stack the battery cells 10 in sequence on top of the bottom support assembly 40, and use the insertion angle 52 to achieve rapid centering of the stacking. While stacking, realize electrical insertion between adjacent lower connectors 8 and upper connectors 3, and finally stack and install the main box 20.

[0069] In actual operation, a locking hole 111 can be opened on the top surface of the battery unit 10, and an L-shaped support plate 60 can be installed through the locking hole 111. The energy storage battery can be fixed to the wall 30 through the support plate 60 to effectively prevent the energy storage battery from tipping over; the support plate 60 can be installed on the topmost battery unit 10 to effectively ensure the reliability of the vertical stacking of the energy storage battery relative to the wall 30.

[0070] The utility model is easy to operate, realizes rapid centering stacking between battery cells, saves the locking installation of fasteners such as screws between adjacent battery cells, and can use the vertical beams to play a structural supporting role for the entire stack, effectively ensuring flexibility and reliability in actual use.

[0071] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0072] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the protection scope of the utility model.

Claims

1. A battery cell, characterized in that: The battery unit (10) comprises a top plate (1) and a bottom plate (7) arranged at an interval, wherein a surrounding wall (2) is installed between the top plate (1) and the bottom plate (7); brackets (4) are installed facing each other on the bottom plate (7) located inside the surrounding wall (2), and batteries are stacked together between the paired brackets (4); a vertical beam (5) extends from the side of the bracket (4), and the vertical beam (5) passes through the top plate (1) upwards, and the top end of the vertical beam (5) located above the top plate (1) forms an insertion angle (52), and the bottom end of the vertical beam (5) forms an inner concave notch (53) that matches the shape of the insertion angle (52).

2. A battery cell according to claim 1, characterized in that: The cross-sections of the vertical beam (5) and the insertion angle (52) are L-shaped right-angle structures, the cross-sectional dimensions of the insertion angle (52) are smaller than the cross-sectional dimensions of the vertical beam (5), and a right-angle hole (12) is provided on the top plate (1) for the insertion angle (52) to pass upward; and a through hole (71) is provided on the bottom plate (7), and the through hole (71) and the right-angle hole (12) are vertically opposite.

3. A battery cell according to claim 1, characterized in that: The vertical beam (5) located outside the insertion angle (52) is folded and extended to form a folded wall (51), and the top surface of the folded wall (51) is tightly fitted and locked with the inner top surface of the top plate (1).

4. A battery cell according to claim 1, characterized in that: The top surface of the top plate (1) is convexly formed along the circumference to form a convex ridge (11), and the bottom surface of the bottom plate (7) is formed along the circumference to form a groove for accommodating the sealing member (9), and the shape of the groove is adapted to the shape of the convex ridge (11).

5. A battery cell according to claim 1, characterized in that: A lower connector (8) is installed on the bottom plate (7), an upper connector (3) is installed on the top plate (1) located directly above the lower connector (8), and the lower connector (8) is plug-fitted and adapted to the upper connector (3) of the adjacent battery unit (10).

6. A battery cell according to claim 1, characterized in that: The bottom plate (7) extends upward to form a plurality of convex columns (72), and the bottom end of the bracket (4) is folded and extended to form a flange that fits and locks with the top surface of the convex columns (72); and a breathable member (6) is installed to penetrate the bottom plate (7) from top to bottom.

7. A battery cell according to claim 1, characterized in that: The top plate (1) and the surrounding wall (2) are welded into one piece or formed into one piece, and the bracket (4) and the vertical beam (5) are welded into one piece or formed into one piece.

8. A stacked energy storage battery, characterized in that: The invention comprises two or more battery cells (10) according to any one of claims 1 to 7, wherein the battery cells (10) are stacked up and down, and the upwardly protruding vertical beam (5) in the lower battery cell (10) extends upward into the upper battery cell (10), and is assembled by the end of the plug-in angle (52) and the concave notch (53) at the bottom end of the vertical beam (5) in the upper battery cell (10); the top of the uppermost battery cell (10) is equipped with a main box (20), and the bottom of the lowermost battery cell (10) is equipped with a bottom support assembly (40), and the bottom end of the bottom support assembly (40) is installed with a supporting wheel group (50); the energy storage battery is an overall rectangular structure stacked vertically.

9. A stacked energy storage battery as claimed in claim 8, characterized in that: The bottom surface of the main box (20) is provided with a through hole (71) for inserting the insertion angle (52), and the top surface of the bottom support assembly (40) extends upward to form the same insertion angle (52); the main box (20) is sealed and fitted with the uppermost battery unit (10), and the bottom support assembly (40) is sealed and fitted with the lowermost battery unit (10).

10. A stacked energy storage battery as claimed in claim 9, characterized in that: The structure of the bottom support assembly (40) is as follows: it includes a bearing plate (43), the top surface of the bearing plate (43) is equipped with a plug-in angle (52) facing upward, the bearing plate (42) and the cover plate (41) are stacked in sequence above the bearing plate (43), the bottom surface of the cover plate (41) is formed with a sealing groove for accommodating a sealing ring along the circumferential direction, and the sealing ring is pressed between the cover plate (41) and the bearing plate (43); and it also includes a loop connector (70) electrically connected to the bottommost battery unit (10).

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