In-line battery module

Abstract

This disclosure relates to the field of battery technology and provides a same-side busbar battery module, which includes battery bodies, a positive busbar, a negative busbar, and a series busbar. Several battery bodies are arranged, with the positive and negative terminals of each battery body located at the same end. The positive busbar is disposed at the terminal of the battery body and connected in parallel with the positive terminals of the several battery bodies to form a first battery pack. The negative busbar is disposed at the terminal of the battery body and connected in parallel with the negative terminals of the several battery bodies to form a second battery pack. The series busbar includes a first piece and a second piece integrally connected. The first piece is spaced apart above the positive busbar and connected in parallel with the negative terminal of the first battery pack. The second piece is spaced apart below the negative busbar and connected in parallel with the positive terminal of the second battery pack. The series busbar connects the first and second battery packs in series. This same-side busbar battery module has the advantages of convenient maintenance, low repair costs, compact layout, and high space utilization.

Description

Technical Field

[0001] This disclosure relates to the field of battery technology, and in particular to a same-side busbar battery module. Background Technology

[0002] In existing technologies, the same-side series-parallel busbar schemes for cylindrical battery modules mostly adopt CCS (Cells Contact System, integrated busbar). However, CCS is an integrated structure that combines busbar, sampling, and insulation, making it difficult to maintain individually. If a part fails (such as a single sampling line open circuit or partial busbar burn-out), the entire CCS module must be replaced, leading to increased maintenance costs. In addition, the spatial layout of CCS modules is inflexible and difficult to adapt to irregularly shaped battery packs. The cell arrangement holes and busbar routing of each group are fixed designs, which can only be spliced ​​along straight lines or right angles, and the power end space requirements are large. Summary of the Invention

[0003] This disclosure provides a battery module with a same-side busbar, in order to solve the problems of high maintenance costs, poor spatial layout flexibility, and low space utilization in battery modules with the same-side busbar in related technologies.

[0004] The same-side busbar battery module provided in this embodiment includes a battery body, a positive electrode busbar, a negative electrode busbar, and a series busbar;

[0005] The battery body is provided in several parts, and the positive and negative terminals of the battery body are located at the same end; The positive electrode busbar is disposed at the electrode end of the battery body and is connected in parallel with the positive electrodes of several battery bodies to form a first battery pack; The negative electrode busbar is disposed at the electrode end of the battery body and is connected in parallel with several negative electrodes of the battery body to form a second battery pack; The series busbar includes a first piece and a second piece that are integrally connected; The first sheet is spaced above the positive electrode busbar and connected in parallel with the negative electrode in the first battery pack. The second plate is spaced below the negative electrode busbar and connected in parallel with the positive electrode in the second battery pack; The series busbar connects the first battery pack and the second battery pack in series.

[0006] In one embodiment, the positive electrode busbar includes a positive electrode busbar extending along its length. The positive electrode busbar has several outwardly protruding positive electrode connection parts spaced apart on its two sides along its length. Furthermore, the positive electrode connection portion is connected to the positive electrode of each battery body in the first battery pack in a one-to-one correspondence.

[0007] In one embodiment, the negative electrode busbar includes a plurality of negative electrode busbars that extend parallel to each other along the length direction; The negative electrode busbar is provided with several downward protruding negative electrode connection parts at intervals along its length. Furthermore, the negative electrode connection portion is connected to the negative electrode of the battery body in the second battery pack in a one-to-one correspondence.

[0008] In one possible embodiment, the first sheet includes a first busbar extending along its length. The first busbar is provided with a plurality of downwardly protruding first connecting portions at intervals along its length; Furthermore, the first connecting part is connected to the negative electrode of the battery body in the first battery pack in a one-to-one correspondence.

[0009] In one possible embodiment, the second sheet includes a second busbar extending along its length. The second busbar has several outwardly protruding second connecting parts spaced apart on its two sides along its length. Furthermore, the second connecting part is connected to the positive electrode of the battery body in the second battery pack in a one-to-one correspondence.

[0010] In one embodiment, the first sheet body further includes a plurality of first serial portions extending along the width direction; The second sheet also includes a plurality of second serial portions extending along the width direction; Furthermore, the first series section and the second series section are electrically connected in a one-to-one correspondence.

[0011] In one embodiment, the same-side busbar module further includes a first insulating sheet and a second insulating sheet; The first insulating sheet is laid on top of the positive electrode busbar to provide insulation between the positive electrode busbar and the first sheet. The second insulating sheet is laid on top of the second sheet body to provide insulation between the negative electrode busbar and the second sheet body.

[0012] In one possible implementation, the same-side busbar module further includes a mounting bracket; The mounting plate is pressed against the terminals of the battery body, and the mounting plate is provided with mounting holes for embedding the positive electrode busbar, the negative electrode busbar, the first electrode body and the second electrode body.

[0013] In one embodiment, the mounting plate frame is further provided with a downwardly protruding pressing portion on the side facing the battery body; The press-fit portion can be positioned and inserted into the gap formed between the battery bodies.

[0014] In one possible implementation, the same-side busbar module further includes a bottom plate frame; The bottom plate frame is correspondingly supported at the bottom end of the battery body; The bottom plate frame also has an upwardly protruding top insert on the side facing the battery body; The top insertion part can be positioned and inserted into the gap formed between the battery bodies.

[0015] The technical solution provided in this disclosure has the following advantages compared with related technologies: The same-side busbar battery module provided in this disclosure, by stacking positive electrode busbars, negative electrode busbars, and series busbars on the same end side of the battery body, can connect multiple battery bodies in parallel and series, making the high current carrying capacity of the same-side busbar battery module stronger and the current distribution more uniform; and by arranging the positive electrode busbars, negative electrode busbars, and series busbars in layers, the space utilization is greatly improved and it is very suitable for compact layouts; and when one of the busbars fails, it can be disassembled and replaced individually without affecting the normal use of the remaining busbars, which has the beneficial effects of convenient maintenance and low repair costs.

[0016] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this disclosure, nor is it intended to limit the scope of this disclosure. Other features of this disclosure will become readily apparent from the following description. Attached Figure Description

[0017] The above and other objects, features, and advantages of this disclosure will become readily apparent from the following detailed description of exemplary embodiments, taken in conjunction with the accompanying drawings. Several embodiments of this disclosure are illustrated in the drawings by way of example and not limitation, in which: In the accompanying drawings, the same or corresponding reference numerals indicate the same or corresponding parts.

[0018] Figure 1 A schematic diagram of a same-side busbar battery module provided in an embodiment of this disclosure is shown; Figure 2 A partial exploded view of the same-side busbar module provided in an embodiment of this disclosure is shown; Figure 3 A partial exploded view of the same-side busbar module provided in an embodiment of this disclosure is shown; Figure 4 An overall view of the same-side busbar module provided in an embodiment of this disclosure is shown; Figure 5An exploded view of the same-side busbar module provided in an embodiment of this disclosure is shown.

[0019] Explanation of the labels in the diagram: 1. Battery body; 101. First battery pack; 102. Second battery pack; 2. Positive busbar; 21. Positive connection part; 3. Negative busbar; 31. Negative connection part; 4. First sheet body; 41. First connecting part; 42. First connecting part; 5. Second sheet; 51. Second connecting part; 52. Second connecting part; 6. First insulating sheet; 7. Second insulating sheet; 8. Mounting plate frame; 81. Insertion hole; 82. Press-in part; 9. Bottom plate frame; 91. Top insertion part. Detailed Implementation

[0020] To make the objectives, features, and advantages of this disclosure more apparent and understandable, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0021] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0022] Combination Figure 1 and Figure 2 As shown, this embodiment of the present disclosure provides a same-side busbar battery module, which includes a battery body 1, a positive electrode busbar 2, a negative electrode busbar 3, and a series busbar; a plurality of battery bodies 1 are provided, and the positive and negative electrodes of the battery bodies 1 are located at the same end; the positive electrode busbar 2 is disposed at the electrode end of the battery body 1 and is connected in parallel with the positive electrodes of the plurality of battery bodies 1 to form a first battery pack 101; the negative electrode busbar 3 is disposed at the electrode end of the battery body 1 and is connected in parallel with the negative electrodes of the plurality of battery bodies 1 to form a second battery pack 102; the series busbar includes a first sheet 4 and a second sheet 5 integrally connected; The first sheet 4 is spaced above the positive electrode busbar 2 and connected in parallel with the negative electrode in the first battery pack 101; the second sheet 5 is spaced below the negative electrode busbar 3 and connected in parallel with the positive electrode in the second battery pack 102; the series busbar connects the first battery pack 101 and the second battery pack 102 in series.

[0023] The same-side busbar battery module provided in this embodiment can have its negative electrode of battery body 1 configured as, but not limited to, a negative electrode post protruding from one end of battery body 1, and the outer casing of battery body 1 can be used as the positive electrode. Thus, the positive electrode busbar 2 can be welded to the outer casing of one end of battery body 1 to connect several positive electrodes of battery body 1 in parallel to form a first battery pack 101; the negative electrode busbar 3 can be welded to the negative electrode post of one end of battery body 1 to connect several negative electrodes of battery body 1 in parallel to form a second battery pack 102.

[0024] Furthermore, since the first piece 4 is spaced above the positive electrode busbar 2 and connected in parallel with the negative electrode in the first battery pack 101, and the second piece 5 is spaced below the negative electrode busbar 3 and connected in parallel with the positive electrode in the second battery pack 102, and the first piece 4 and the second piece 5 are integrally connected, the first battery pack 101 and the second battery pack 102 can be connected in series by connecting the busbars, thereby forming a same-side busbar battery module that connects multiple battery pieces 1 in series and in parallel.

[0025] The same-side busbar battery module provided in this embodiment can connect multiple battery bodies 1 in parallel and series by stacking positive busbar 2, negative busbar 3, and series busbars on the same end of the battery body 1. This makes the high current carrying capacity of the same-side busbar battery module stronger and the current distribution more uniform. Furthermore, the layered arrangement of positive busbar 2, negative busbar 3, and series busbars greatly improves space utilization and is very suitable for compact layouts. Moreover, when one of the busbars has a busbar failure (such as open circuit or burn-out), it can be disassembled and replaced individually without affecting the normal use of the remaining busbars. Therefore, it also has the advantages of convenient maintenance and low repair costs.

[0026] In one embodiment, the positive electrode busbar 2 includes a positive electrode busbar extending along the length direction; a plurality of outwardly protruding positive electrode connection portions 21 are respectively provided on two sides along the length direction; and the positive electrode connection portions 21 are connected one-to-one with the positive electrode of the battery body 1 in the first battery pack 101.

[0027] Specifically, in combination Figure 1 and Figure 2 To explain in more detail, the positive electrode busbar 2 can be configured as a positive electrode busbar extending along the length direction, and a number of outwardly protruding positive electrode connection portions 21 are respectively provided on the two sides of the positive electrode busbar along the length direction. The positive electrode connection portions 21 can be configured in a crescent shape, but are not limited to. In this way, the positive electrode busbar 2 can connect the positive electrodes of the two rows of battery bodies 1 in parallel through the multiple positive electrode connection portions 21 on both sides to form the first battery pack 101.

[0028] The above-mentioned positive electrode busbar 2 has a simple structure and can stably connect the positive electrodes of multiple battery cells 1 in the first battery pack 101 in parallel in a way that carries a large current and distributes the current evenly.

[0029] In one embodiment, the negative electrode busbar 3 includes a plurality of negative electrode busbars extending parallel to each other along the length direction; the negative electrode busbars are provided with a plurality of downwardly protruding negative electrode connection portions 31 at intervals along the length direction; and the negative electrode connection portions 31 are connected one-to-one with the negative electrode of the battery body 1 in the second battery pack 102.

[0030] Specifically, in combination Figure 1 and Figure 2 To explain in more detail, the negative electrode busbar 3 can be configured as two parallel negative electrode busbars extending along the length direction, and a number of downwardly protruding negative electrode connection portions 31 are provided at intervals along the length direction of the two negative electrode busbars. The negative electrode connection portions 31 can be, but are not limited to, circular. In this way, the negative electrode busbar 3 can connect the negative electrodes in the two rows of battery bodies 1 in parallel through the multiple negative electrode connection portions 31 in the two negative electrode busbars to form the second battery pack 102.

[0031] The specific arrangement of the negative electrode busbar 3 is simple in structure and can stably connect the negative electrodes of multiple battery cells 1 in the second battery pack 102 in parallel in a way that carries a large current and distributes the current evenly.

[0032] In one embodiment, the first plate 4 includes a first busbar extending along the length direction; the first busbar is provided with a plurality of downwardly protruding first connecting portions 41 at intervals along the length direction; and the first connecting portions 41 are connected one-to-one with the negative electrode of the battery body 1 in the first battery pack 101.

[0033] Specifically, in combination Figure 1 and Figure 2 To explain in more detail, the first plate 4 can be configured as two parallel first busbars extending along the length direction, and a number of downwardly protruding first connecting parts 41 are provided at intervals along the length direction of the two first busbars. The first connecting parts 41 can also be, but are not limited to, circular pieces. In this way, the first plate 4 can connect the negative terminals of the two rows of battery bodies 1 in the first battery pack 101 in parallel through the multiple first connecting parts 41 in the two first busbars.

[0034] Furthermore, the first piece 4 can be positioned above the positive busbar 2 at corresponding intervals, and the first busbar and the positive busbar can be staggered relative to each other along the height direction.

[0035] Similarly, the specific arrangement of the first piece 4 is simple in structure and can stably connect the negative electrodes of multiple battery pieces 1 in the first battery pack 101 in parallel in a way that carries a large current and distributes the current evenly.

[0036] In one embodiment, the second sheet 5 includes a second busbar extending along the length direction; a plurality of outwardly protruding second connecting portions 51 are respectively provided on the two sides of the second busbar along the length direction; and the second connecting portions 51 are connected one-to-one with the positive electrode of the battery body 1 in the second battery pack 102.

[0037] Specifically, in combination Figure 1 and Figure 2 To explain in more detail, the second sheet 5 can be configured as a second busbar extending along the length direction, and a plurality of outwardly protruding second connecting portions 51 are respectively provided on the two sides of the second busbar along the length direction. The second connecting portions 51 can be, but are not limited to, configured in a crescent shape. In this way, the second sheet 5 can stably connect the positive electrodes of the multiple battery bodies 1 in the second battery pack 102 in parallel through the multiple second connecting portions 51 on both sides.

[0038] Furthermore, the second piece 5 can be positioned at intervals below the negative busbar 3, and the second busbar and the negative busbar can be staggered along the height direction.

[0039] Similarly, the specific arrangement of the second piece 5 is simple in structure and can stably connect the positive electrodes of multiple battery pieces 1 in the second battery pack 102 in parallel in a way that carries a large current and distributes the current evenly.

[0040] In one embodiment, the first sheet 4 further includes a plurality of first serial portions 42 extending along the width direction; the second sheet 5 further includes a plurality of second serial portions 52 extending along the width direction; and the first serial portions 42 and the second serial portions 52 are electrically connected in a one-to-one correspondence.

[0041] Specifically, in combination Figure 2 and Figure 3 To explain in further detail, the first series section 42 can be arranged perpendicularly to the first busbar, and the first series section 42 and the first busbar can be staggered and arranged in different height planes; the second series section 52 can be arranged perpendicularly to the second busbar, and the second series section 52 and the second busbar can be located in the same height plane.

[0042] In this way, the first sheet 4 can be integrally connected with the second series part 52 in the second sheet 5 through the first series part 42 to form multiple conductive structures, which can carry a larger rated current and can connect the first battery pack 101 and the second battery pack 102 in series in a uniform manner.

[0043] In one embodiment, the same-side busbar module further includes a first insulating sheet 6 and a second insulating sheet 7; the first insulating sheet 6 is correspondingly laid on the top of the positive electrode busbar 2 so as to provide an insulating gap between the positive electrode busbar 2 and the first sheet 4; the second insulating sheet 7 is correspondingly laid on the top of the second sheet 5 so as to provide an insulating gap between the negative electrode busbar 3 and the second sheet 5.

[0044] Specifically, in combination Figure 3 To explain in further detail, the shape of the first insulating sheet 6 can be adapted to the shape of the positive electrode busbar 2, and the first insulating sheet 6 can be attached to the top of the positive electrode busbar 2 (i.e., the side facing the first sheet 4). In this way, the first insulating sheet 6 can ensure reliable insulation between the positive electrode busbar 2 and the first sheet 4. The shape of the second insulating sheet 7 can be adapted to the shape of the negative electrode busbar 3, and the second insulating sheet 7 can be attached to the top of the second sheet 5 (i.e., the side facing the negative electrode busbar 3). In this way, the second insulating sheet 7 can ensure reliable insulation between the negative electrode busbar 3 and the second sheet 5.

[0045] In one embodiment, the same-side busbar battery module further includes a mounting plate frame 8; the mounting plate frame 8 is pressed against the electrode terminals of the battery body 1, and the mounting plate frame 8 is provided with mounting holes 81 for mounting the positive electrode busbar 2, the negative electrode busbar 3, the first plate 4 and the second plate 5 respectively.

[0046] Specifically, in combination Figure 4 and Figure 5 To explain in more detail, the specific shape of the mounting bracket 8 can be adapted and adjusted according to the arrangement of the multiple battery bodies 1. Furthermore, multiple recessed mounting holes can be provided on one side of the mounting bracket 8 that covers the battery body 1. In this way, when the mounting bracket 8 covers one side of the battery body 1, the mounting holes can be used to mount the terminals of the multiple battery bodies 1 one by one.

[0047] Furthermore, mounting holes 81 for embedding the positive electrode busbar 2, negative electrode busbar 3, first plate 4, and second plate 5 can be provided on the side of the mounting plate frame 8 facing away from the battery body 1, so that the positive electrode busbar 2, negative electrode busbar 3, first plate 4, and second plate 5 can be fixedly installed in the mounting plate frame 8 to ensure that the mounting position can always be fixed relative to the multiple battery bodies 1.

[0048] In one embodiment, the mounting bracket 8 is further provided with a downwardly protruding pressing part 82 on the side facing the battery body 1; the pressing part 82 can be positioned and inserted into the gap formed between the battery bodies 1.

[0049] Specifically, in combination Figure 4 and Figure 5To explain in more detail, multiple downward protruding insertion parts 82 can be provided on the side of the mounting plate frame 8 facing the battery body 1. When the mounting plate frame 8 is pressed against the side of the battery body 1, the multiple insertion parts 82 can be positioned and inserted into the gap formed between two adjacent battery bodies 1, thereby further ensuring the installation firmness of the mounting plate frame 8 and avoiding displacement and deformation during use.

[0050] In one embodiment, the same-side busbar battery module further includes a bottom plate frame 9; the bottom plate frame 9 is correspondingly supported at the bottom end of the battery body 1; the bottom plate frame 9 is also provided with an upwardly protruding top insertion part 91 on the side facing the battery body 1; the top insertion part 91 can be correspondingly positioned and inserted into the gap formed between the battery bodies 1.

[0051] Specifically, in combination Figure 4 and Figure 5 To explain in more detail, the specific shape of the bottom plate frame 9 can also be adapted and adjusted according to the arrangement of the multiple battery bodies 1. Furthermore, multiple recessed mounting holes can be opened on one side of the bottom plate frame 9 that supports the battery bodies 1. In this way, when the mounting plate frame 8 is pressed against one side of the battery body 1, the mounting holes can be used to insert the terminals of the multiple battery bodies 1 one by one.

[0052] In addition, multiple upward-protruding top inserts 91 can be provided on the side of the bottom plate frame 9 facing the battery body 1; in this way, the top inserts 91 can be positioned and inserted into the gap formed between two adjacent battery bodies 1, thereby further ensuring the installation firmness of the bottom plate frame 9 and avoiding displacement and deformation during use.

[0053] In addition, such as Figure 5 As shown, the same-side busbar battery module can also have insulating sheets installed on the top side of the mounting plate 8 and the bottom side of the bottom plate 9 respectively to ensure the insulation between the same-side busbar battery module and the usage environment.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means two or more, unless otherwise explicitly specified.

[0055] The above are merely specific embodiments of this disclosure, but the scope of protection of this disclosure is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this disclosure should be included within the scope of protection of this disclosure. Therefore, the scope of protection of this disclosure should be determined by the scope of the claims.

Claims

1. A same-side busbar battery module, characterized in that, include: A battery body (1) is provided in several forms, and the positive and negative electrodes of the battery body (1) are located at the same end; A positive electrode busbar (2) is disposed at the electrode end of the battery body (1) and is connected in parallel with the positive electrodes of several battery bodies (1) to form a first battery pack (101). The negative electrode busbar (3) is disposed at the electrode end of the battery body (1) and is connected in parallel with the negative electrodes of several battery bodies (1) to form a second battery pack (102). The series busbar includes a first piece (4) and a second piece (5) that are integrally connected. The first piece (4) is spaced above the positive electrode busbar (2) and connected in parallel with the negative electrode in the first battery pack (101); The second plate (5) is spaced below the negative electrode busbar (3) and connected in parallel with the positive electrode in the second battery pack (102); The series busbar connects the first battery pack (101) and the second battery pack (102) in series.

2. The same-side busbar battery module according to claim 1, characterized in that, The positive electrode busbar (2) includes a positive electrode busbar extending along the length direction; The positive electrode busbar has several outwardly protruding positive electrode connection parts (21) spaced apart on its two sides along the length direction. Furthermore, the positive electrode connection part (21) is connected one-to-one with the positive electrode of the battery body (1) in the first battery pack (101).

3. The same-side busbar battery module according to claim 1, characterized in that, The negative electrode busbar (3) includes a plurality of negative electrode busbars that extend parallel to each other along the length direction; The negative electrode busbar is provided with a number of downwardly protruding negative electrode connection parts (31) at intervals along its length. Furthermore, the negative electrode connection part (31) is connected one-to-one with the negative electrode of the battery body (1) in the second battery pack (102).

4. The same-side busbar battery module according to claim 1, characterized in that, The first sheet (4) includes a first busbar extending along its length; The first busbar is provided with a plurality of downwardly protruding first connecting parts (41) at intervals along its length. Furthermore, the first connecting part (41) is connected one-to-one with the negative electrode of the battery body (1) in the first battery pack (101).

5. The same-side busbar battery module according to claim 4, characterized in that, The second sheet (5) includes a second busbar extending along its length. The second busbar has several outwardly protruding second connecting parts (51) spaced apart on its two sides along the length direction; Furthermore, the second connecting part (51) is connected one-to-one with the positive electrode of the battery body (1) in the second battery pack (102).

6. The same-side busbar battery module according to claim 5, characterized in that, The first sheet (4) also includes a plurality of first serial portions (42) extending along the width direction; The second piece (5) also includes a plurality of second serial portions (52) extending along the width direction; Furthermore, the first series connection portion (42) and the second series connection portion (52) are electrically connected in a one-to-one correspondence.

7. The same-side busbar battery module according to claim 1, characterized in that, The same-side busbar module also includes a first insulating sheet (6) and a second insulating sheet (7). The first insulating sheet (6) is laid on top of the positive electrode busbar (2) to make the positive electrode busbar (2) and the first sheet (4) insulated from each other; The second insulating sheet (7) is laid on top of the second sheet body (5) to make the negative electrode busbar (3) and the second sheet body (5) insulated from each other.

8. The same-side busbar battery module according to any one of claims 1 to 7, characterized in that, The same-side busbar module also includes a mounting bracket (8); The mounting plate (8) is pressed against the electrode of the battery body (1), and the mounting plate (8) is provided with mounting holes (81) for mounting the positive electrode busbar (2), the negative electrode busbar (3), the first plate body (4) and the second plate body (5).

9. The same-side busbar battery module according to claim 8, characterized in that, The mounting bracket (8) is also provided with a downward protruding pressing part (82) on the side facing the battery body (1). The press-fit part (82) can be positioned and inserted into the gap formed between the battery bodies (1).

10. The same-side busbar battery module according to claim 8, characterized in that, The same-side busbar module also includes a bottom plate frame (9); The bottom plate frame (9) is correspondingly supported at the bottom end of the battery body (1); The bottom plate frame (9) is also provided with an upwardly protruding top insert (91) on the side facing the battery body (1). The top insert (91) can be positioned and inserted into the gap formed between the battery bodies (1).

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