Modularized battery module

Abstract

The utility model belongs to the technical field of power batteries, and provides a modular battery module which is formed by arranging a plurality of square battery cells, and positive electrodes and negative electrodes on two adjacent battery cells are opposite; the battery module further comprises a first connecting row, a second connecting row and a parallel row, the first connecting row is used for being arranged on the positive electrode of each battery cell, and the second connecting row is used for being arranged on the negative electrode of each battery cell; the first connecting bar and the second connecting bar are both provided with connecting lugs used for being connected with the parallel bars, and the connecting lugs on the first connecting bar and the connecting lugs on the second connecting bar in the same battery cell are oppositely arranged; the parallel bars are used for being selectively connected to the first connecting bars and the second connecting bars of the two adjacent battery cells. According to the invention, the technical problem that a battery cell needs to be disassembled into single cells and reassembled into a new module for use when a battery in the prior art is used in an echelon manner is solved.

Description

Technical Field

[0001] The present application belongs to the technical field of power batteries, and in particular, relates to a modular battery module. Background Art

[0002] In the cascade utilization of batteries, the state parameters of battery packs of different types, specifications and models are different. For different batches of battery packs, due to changes in the supply chain materials such as battery cells and electrical parts used, the design plan also needs to be adjusted accordingly.

[0003] During the cascade utilization of batteries, if the capacity requirements of the batteries do not match the original modules, the traditional operation is to disassemble the modules into single cells again, and then reassemble them into new modules. It can be seen that during cascade utilization, the cells in the modules need to be disassembled into single cells, which leads to the addition of multiple processes such as disassembly, glue removal, re-encapsulation, capacity distribution, and module reassembly, making the cascade utilization of batteries complicated and the transformation cost high. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a modular battery module to solve the technical problem that the batteries of the prior art need to be disassembled into monomers and reassembled into new modules before they can be used in cascade utilization.

[0005] To achieve the above-mentioned purpose, the technical solution adopted in the present application is: to provide a modular battery module, which is composed of a plurality of square cells arranged, and the positive electrodes and the negative electrodes on two adjacent cells are opposite;

[0006] The modular battery module further includes a first connection row, a second connection row and a parallel row, wherein the first connection row is used to be arranged on the positive electrode of each of the battery cells, and the second connection row is used to be arranged on the negative electrode of each of the battery cells; the first connection row and the second connection row are both provided with connection ears for connecting with the parallel row, and the connection ears on the first connection row and the connection ears on the second connection row in the same battery cell are arranged facing each other;

[0007] The parallel row is used to selectively connect to the first connection row and the second connection row of two adjacent battery cells.

[0008] The beneficial effect of the modular battery module provided by the present application is that: compared with the prior art, since the connection row is respectively provided on the positive and negative electrodes of each battery cell, each battery cell is a separate individual, and there is no need to disassemble the module into single battery cells and then reassemble it. According to the attenuation condition of the battery cell, the parallel row can be selectively connected to each connection row to readjust the connection relationship between the positive and negative electrodes of each battery cell, and directly perform cascade utilization adjustment. In this way, there is no need to perform multiple processes such as disassembly, glue removal, re-encapsulation, capacity distribution, and reassembly of the module, which effectively saves a lot of transformation time and transformation costs, and also avoids the risk of easily damaging the battery cell during the process of disassembling and assembling the module.

[0009] In one embodiment, the parallel row includes a straight row and a concave row, the concave row has a concave portion, and the concave row crosses and overlaps with the straight row through the concave portion. The concave portion on the concave row is used for cross-overlapping to avoid mutual interference and save space.

[0010] In one embodiment, the modular battery module further comprises a series row, and a plurality of the straight rows or a plurality of the concave rows are respectively arranged on the series row along the length direction of the series row. In this way, the series and parallel numbers in the battery module can be adjusted by utilizing the connection combination of the series row and the parallel row.

[0011] In one embodiment, the series row is provided with a plurality of mounting holes along its length direction, each of the linear rows is provided with a first connection hole corresponding to the position of the mounting hole; each of the concave rows is provided with a second connection hole corresponding to the position of the mounting hole, so as to directly install fasteners such as screws for connection and fixing. In this way, the linear row or the concave row can be rotated horizontally on the series row to quickly change the connection relationship between the positive and negative electrodes of adjacent cells.

[0012] In one embodiment, the series row has a bent portion, and the bent portion is used to connect to the total positive electrode or the total negative electrode of the modular battery module.

[0013] In one embodiment, the modular battery module further includes an insulating plate, which is disposed between the straight rows and the concave rows to provide a barrier and insulation function to prevent the crossed and overlapped straight rows and concave rows from interfering with each other.

[0014] In one embodiment, the modular battery module further includes a positioning plate covering the plurality of battery cells, and the positioning plate is provided with positioning holes corresponding to the positions of the positive electrodes and negative electrodes on each of the battery cells. The positioning plate can play an insulating role to prevent the parallel rows or series rows arranged on the battery cells from directly contacting the end faces of the battery cells and causing adverse effects. In addition, the positioning plate covers the end faces of the battery cells, and only exposes the electrodes on the battery cells from the positioning holes, so as to facilitate the operation of welding the connection rows on the positive and negative electrodes of the battery cells and avoid affecting the surface of the battery cells.

[0015] In one embodiment, the positioning plate is provided with a frame arranged around the periphery of the positioning hole; the first connection row and the second connection row both have pins for being arranged on the positive electrode or negative electrode of the battery cell, and the shape of the pins matches the frame. The connection row can use the frame as the target area and accurately weld the pins on the positive and negative electrodes of each battery cell, so as to play a fool-proof installation role.

[0016] The structure of the battery module is improved, and the modular battery module also includes end plates and enclosures. The multiple battery cells are arranged between the end plates at both ends of the battery module; the enclosures respectively enclose the opposite sides of the battery module, and the two ends of each enclosure are respectively connected to the end plates, thereby forming a surrounding structure for the multiple battery cells, ensuring the protection and insulation effect of the battery cells.

[0017] In one embodiment, symmetrically arranged connection blocks are respectively provided on both sides of the end plate, and the connection blocks are connected to the ends of the enclosure plate; screw holes are provided on the connection blocks, and the screw holes are used to install fasteners to install the battery module on the carrier. The structure is simple, easy to implement, convenient for disassembly and assembly, and conducive to improving versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 A top view of the battery module provided in the embodiment of the present application Figure 1 ;

[0020] Figure 2 Schematic diagram of the explosion structure of the battery module provided in the embodiment of the present application Figure 1 ;

[0021] Figure 3 A top view of the battery module provided in the embodiment of the present application Figure 2;

[0022] Figure 4 Schematic diagram of the explosion structure of the battery module provided in the embodiment of the present application Figure 2 ;

[0023] Figure 5 A schematic diagram of a parallel three-dimensional structure provided in an embodiment of the present application;

[0024] Figure 6 Schematic diagram of the explosion structure of the battery module provided in the embodiment of the present application Figure 3 ;

[0025] Figure 7 A schematic diagram of a three-dimensional structure of a first parallel unit provided in an embodiment of the present application;

[0026] Figure 8 A schematic diagram of a second parallel unit three-dimensional structure provided in an embodiment of the present application;

[0027] Fig. 9 A schematic diagram of a third parallel unit three-dimensional structure provided in an embodiment of the present application;

[0028] Fig.10 A schematic diagram of the three-dimensional structure of a battery module provided in an embodiment of the present application;

[0029] Fig.11 A schematic diagram of the three-dimensional structure of an insulation board provided in an embodiment of the present application;

[0030] Fig.12 Schematic diagram of the explosion structure of the battery module provided in the embodiment of the present application Figure 4 ;

[0031] Fig.13 Schematic diagram of the explosion structure of the battery module provided in the embodiment of the present application Figure 5 ;

[0032] Fig.14 A schematic diagram of the three-dimensional structure of an end plate at one end of a battery module provided in an embodiment of the present application.

[0033] Among them, the reference numerals in the figure are:

[0034] 100-battery cells;

[0035] 200-series units;

[0036] 1-first connection row; 11-first connection ear; 12-first pin;

[0037] 2-second connecting row; 21-second connecting ear; 22-second pin;

[0038] 3-parallel row; 31-straight row; 311-first connection hole; 32-concave row; 321-concave portion; 322-second connection hole;

[0039] 4-series row; 41-mounting hole; 42-bending part;

[0040] 5-insulating plate; 51-wire tie notch;

[0041] 6-positioning plate; 61-positioning hole; 62-surrounding frame;

[0042] 7-end plate; 71-connecting block; 711-screw hole; 72-total positive electrode; 73-total negative electrode; 74-weight reduction hole; 8-enclosure plate; 81-connecting flap. DETAILED DESCRIPTION

[0043] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0044] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0045] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0046] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0047] In actual applications, when lithium-ion battery modules are recycled, if the battery capacity requirement cannot match the original module, the module is generally disassembled into single batteries again, that is, the battery cells in the original battery module are disassembled into individual single cells, and then according to the needs of cascade utilization, the single cells are reassembled into a new battery module before it can continue to be used.

[0048] It can be seen that the battery cells in the module need to be disassembled into monomers during cascade utilization, which leads to the addition of multiple processes such as disassembly, glue removal, re-wrapping, capacity division and grouping, and module reassembly, making the battery recycling process complicated and the transformation cost high.

[0049] Here, the embodiment of the present application provides a new type of modular battery module to solve the technical problem that traditional batteries need to be disassembled into individual single cells during cascade utilization, and then reassembled into new modules after sorting before they can continue to be used. It is now described in detail.

[0050] Considering the versatility, square cells with common specifications in the current industry are used. It should be noted that since the battery modules composed of cells are in various forms, as an example, the embodiment of this application is explained by changing the connection order of the original connection row to change the original 1-parallel 12-series module to a 4-parallel 3-series module.

[0051] See also Figure 1 ( Figure 1 The + sign in the figure is the connection part on the positive electrode of the battery cell, and the - sign is the connection part on the negative electrode of the battery cell). The modular battery module is mainly composed of a plurality of square battery cells 100. The positive electrodes and negative electrodes on the plurality of battery cells 100 are located on the same end surface of the battery cell 100 and are arranged at intervals, and the positive electrodes and negative electrodes on two adjacent battery cells 100 are opposite.

[0052] Please also read Figure 2 and Figure 3 The battery module further includes a first connection row 1, a second connection row 2 and a parallel row 3. The first connection row 1 is used to be arranged on the positive electrode of each battery cell 100, and the second connection row 2 is used to be arranged on the negative electrode of each battery cell 100. The first connection row 1 and the second connection row 2 are both provided with connection ears for connecting with the parallel row 3. The first connection ear 11 on the first connection row 1 and the second connection ear 21 on the second connection row 2 in the same battery cell 100 are arranged facing each other, so that the parallel row 3 can be arranged between the two rows of connection rows.

[0053] The parallel row 3 is used to selectively connect to the first connection row 1 and the second connection row 2 of two adjacent battery cells 100. In this embodiment, both ends of the parallel row 3 are fixed to the first connection ear 11 of the first connection row 1 and the second connection ear 21 of the second connection row 2 by means of fasteners such as screws.

[0054] Compared with the prior art, the modular battery module provided in the embodiment of the present application has a connection row respectively arranged on the positive and negative electrodes of each battery cell 100, so each battery cell 100 is a separate individual, and there is no need to disassemble the module into single battery cells 100 and then reassemble it. According to the attenuation condition of the battery cell 100, the parallel row 3 can be selectively connected to each connection row to readjust the connection relationship between the positive and negative electrodes of each battery cell 100, and directly perform cascade utilization adjustment. In this way, there is no need to perform multiple processes such as disassembly, glue removal, re-encapsulation, capacity distribution, and reassembly of the module, which effectively saves a lot of transformation man-hours and transformation costs, and also avoids the risk of easily damaging the battery cell 100 during the process of disassembling and assembling the module.

[0055] In practical applications, when the battery module of the present application is initially set up for modular transformation, in order to consider the subsequent cascade utilization, the original connection row on the module can be removed first, and then the positive and negative electrode surfaces on the battery cell 100 are cleaned, and then the customized first connection row 1 is welded on the positive electrode of each battery cell 100, and the customized second connection row 2 is welded on the negative electrode of each battery cell 100, and the first connection ear 11 on the first connection row 1 and the second connection ear 21 on the second connection row 2 on the same battery cell 100 are arranged facing each other. When cascade utilization, the arrangement of the battery cells 100 in the module can be left unchanged, and the positive and negative electrode connection relationship between each battery cell 100 can be directly readjusted using each parallel row 3, and cascade utilization adjustment can be directly performed.

[0056] Compared with the module structure in the related art, in which every two or more adjacent battery cells 100 form a group of battery cell units, since the battery cell unit is composed of two or more adjacent battery cells 100, each battery cell 100 in the battery cell unit has been fixed, and the positive electrodes or negative electrodes on the adjacent battery cells 100 are welded to the same connecting row at the same time. If a battery cell 100 in the same battery cell unit has a high attenuation, the battery cell 100 can only be disassembled separately and then a new battery cell 100 is added to form a new battery cell unit. It can be seen that this module structure still requires the battery cells 100 in the module to be disassembled into single battery cells 100 and then reassembled, which cannot meet the use requirements.

[0057] In the battery module of the present application, each battery cell 100 is a separate individual, and connection rows are separately arranged on the positive electrode and the negative electrode of each battery cell 100. According to the attenuation of each battery cell 100, the connection relationship between each battery cell 100 can be readjusted directly by using the parallel row 3 without disassembling the battery cell 100, thereby realizing cascade utilization adjustment, effectively saving transformation time and reducing modification costs.

[0058] In one embodiment of the present application, please refer to Figure 4 and Figure 5 The parallel row 3 includes a straight row 31 and a concave row 32. The concave row 32 has a concave portion 321. The concave row 32 crosses and overlaps with the straight row 31 through the concave portion 321. The concave row 32 can be formed by bending the straight row 31 to form a concave structure, so that the concave row 32 has the concave portion 321, thereby reducing the production cost.

[0059] The recessed portion 321 on the concave row 32 is conducive to space avoidance, so that the straight row 31 and the concave row 32 can cross and overlap in the same space, so that each straight row 31 and each concave row 32 can form a group of connection units, connected to the first connection row 1 and the second connection row 2 on both sides, thereby improving the flexibility of the connection relationship between the positive and negative electrodes of each battery cell 100.

[0060] In order to improve the connection diversity of each battery cell 100 in the battery module, in the embodiments of the present application, please refer to Figure 6 , Figure 7 and Figure 8 The battery module of the present application also includes a series row 4, and a plurality of straight rows 31 or a plurality of concave rows 32 are respectively arranged on the series row 4 along the length direction of the series row 4. In this way, the connection combination of the series row 4 and the parallel row 3 is used to adjust the number of series and parallel in the battery module.

[0061] In this embodiment, the series row 4 is a strip structure, and the length can be cut according to the use requirements, so as to set the extension range of the series row 4, which is conducive to adjusting the number of parallel rows 3 set on one series row 4. Figure 6 As shown, a series row 4 and a plurality of parallel rows 3 thereon constitute a series unit 200, so that a plurality of such series units 200 can be arranged on a battery module according to connection requirements, thereby improving the flexibility of series-parallel connection combinations.

[0062] In one embodiment of the present application, please refer to Figure 5 , Figure 7 and Figure 8A plurality of mounting holes 41 are provided on the series row 4 along its length direction, a first connection hole 311 corresponding to the position of the mounting hole 41 is provided on the middle part of each linear row 31, and a second connection hole 322 corresponding to the position of the mounting hole 41 is provided on the concave part 321 of each concave row 32, so as to directly install fasteners such as screws for threading and fixing.

[0063] On the one hand, a series row 4 is respectively arranged on each straight row 31 or each concave row 32 to avoid mutual interference. According to the requirements for setting the number of series and parallel rows of the battery module, a corresponding number of connection combinations of series rows 4 and parallel rows 3 can be arranged, thereby improving the flexibility of the connection combination.

[0064] On the other hand, due to the use of fasteners such as screws for through-connection fixing, the straight row 31 or the concave row 32 can be horizontally rotated on the series row 4 with the added fasteners as the axis, and the rotation angle can be locked after the fasteners are tightened, thereby directly adjusting the connection relationship between the positive and negative electrodes of adjacent battery cells 100.

[0065] In another embodiment of the present application, please refer to Fig. 9 and Fig.10 The series row 4 has a bending portion 42, which can be used to connect to the total positive electrode or the total negative electrode on the entire battery module.

[0066] In this embodiment, since the series row 4 adopts a strip structure, one end of the series row 4 can be directly twisted to form a bent portion 42, thereby changing the extension direction to facilitate connection to the total positive electrode or total negative electrode at the end of the battery membrane group.

[0067] In addition to the above, please also refer to Figure 6 and Fig.10 The battery module also includes an insulating plate 5, which is arranged between the upper and lower positions of the straight line row 31 and the concave row 32 to play a role of blocking and insulating, thereby preventing the crossed and overlapped straight line row 31 and concave row 32 from interfering with each other.

[0068] In this embodiment, the insulating plate 5 is a strip structure, and the length of the insulating plate 5 is similar to the sum of the thicknesses of the plurality of square cells 100 after being arranged, so as to ensure the coverage of the insulating plate 5. The insulating plate 5 can be preferably embedded in the concave portions 321 of the plurality of concave rows 32 to save space.

[0069] Preferably, if Fig.11As shown, symmetrically arranged wire-binding notches 51 are provided on both side edges of the insulating plate 5, and the wire-binding notches 51 are used to bind the above-mentioned series row 4 up and down, so that the insulating plate 5 is fixed in the battery module. In other embodiments, the insulating plate 5 can also be glued to the series row 4, or the insulating plate 5 can be fixed to other parts of the battery module where a fixing structure can be installed, which is not specifically limited here.

[0070] In the examples of this application, please refer to Fig.12 The battery module of the present application further includes a positioning plate 6 covering the plurality of battery cells 100 , and the positioning plate 6 is provided with positioning holes 61 corresponding to the positions of the positive electrodes and the negative electrodes on each battery cell 100 .

[0071] On the one hand, the positioning plate 6 can be made of insulating material to play an insulating role and prevent the parallel row 3 or the series row 4 arranged on the battery cell 100 from directly contacting the end surface of the battery cell 100 and causing adverse effects.

[0072] On the other hand, the positioning holes 61 opened on the positioning plate 6 correspond to the positions of the positive electrodes and negative electrodes on each battery cell 100, respectively, so that the positive electrodes and negative electrodes on the battery cell 100 are exposed, which facilitates the operation of welding the connection row on the positive and negative electrodes of the battery cell 100, avoids excess solder adhering to the surface of the battery cell 100, avoids affecting the battery cell 100, and effectively improves the yield rate.

[0073] Preferably, in this embodiment, if Fig.12 As shown, the positioning plate 6 is further provided with a surrounding frame 62 arranged around the outer periphery of the positioning hole 61 . The surrounding frame 62 may be a complete surrounding frame 62 or a surrounding frame 62 with a notch.

[0074] In coordination, the first connection row 1 and the second connection row 2 both have pins for being set on the positive electrode or negative electrode of the battery cell 100. The area of ​​the pins is preferably smaller than the surrounding frame 62 so that the surrounding frame 62 can accommodate the pins. Specifically, the first connection row 1 has a first pin 12 for being set on the positive electrode of the battery cell 100, and the second connection row 2 has a second pin 22 for being set on the negative electrode of the battery cell 100.

[0075] Preferably, the pin is a rectangular piece that matches the shape of the surrounding frame 62 , so that the shape of the pin matches the surrounding frame 62 .

[0076] In this way, the connecting bar can use the frame 62 as the target area to accurately weld the pins to the positive and negative electrodes of each battery cell, thereby achieving a fool-proof installation.

[0077] In one embodiment of the present application, please refer to Fig.10 and Fig.13The battery module further includes an end plate 7 and a surrounding plate 8. The end plates 7 are arranged at both ends of the battery module. A plurality of battery cells 100 are arranged between the end plates 7 at both ends of the battery module in the length direction of the battery module.

[0078] The enclosures 8 are respectively enclosed at two opposite sides of the battery module, and the two ends of each enclosure 8 are respectively connected to the end plates 7 at the two ends of the battery module, thereby forming an enclosure structure for the multiple battery cells 100 to ensure protection and insulation effect for the battery cells 100.

[0079] Please also refer to Fig.13 and Fig.14 The two sides of the end plate 7 are respectively provided with symmetrically arranged connecting blocks 71, and the connecting blocks 71 are used to connect with the ends of the above-mentioned enclosure 8.

[0080] In this embodiment, both ends of the enclosure 8 may preferably have outwardly extending connecting flaps 81, and the connecting flaps 81 cooperate with the outer contour of the connecting block 71 so that the connecting flaps 81 can fit on the connecting block 71, which is convenient for laser welding, improves the fit between the connecting part of the connecting block 71 and the end of the enclosure 8, and ensures the connection effect.

[0081] like Fig.14 As shown, the connection block 71 is provided with a screw hole 711, which is used to install fasteners such as screws, etc., and is fixedly connected to the connection part on the installation carrier such as the battery box, so as to fix the battery module on the installation carrier. The structure is simple, easy to implement, convenient for disassembly and assembly, and conducive to improving versatility.

[0082] In this embodiment, if Fig.10 and Fig.13 As shown, the end plates 7 at both ends of the battery module are also provided with a total positive electrode 72 and a total negative electrode 73 for external connection of the entire battery module, so as to be connected to the external connection bar to achieve series connection with other modules or electrical components. The bent portion 42 on the series bar 4 can be connected to the total positive electrode 72 or the total negative electrode 73 according to the use requirements.

[0083] Preferably, if Fig.14 As shown, weight-reducing holes 74 are provided on the end plates 7 at both ends of the battery module. A plurality of weight-reducing holes 74 form a grid and are arranged on the outer side of the end plates 7 to reduce the weight of the battery module.

[0084] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A modular battery module, composed of a plurality of square cells arranged in an array, characterized in that: The positive electrodes on the two adjacent cells are opposite to the negative electrodes; The modular battery module further includes a first connection row, a second connection row and a parallel row, wherein the first connection row is used to be arranged on the positive electrode of each of the battery cells, and the second connection row is used to be arranged on the negative electrode of each of the battery cells; the first connection row and the second connection row are both provided with connection ears for connecting with the parallel row, and the connection ears on the first connection row and the connection ears on the second connection row in the same battery cell are arranged facing each other; The parallel row is used to selectively connect to the first connection row and the second connection row of two adjacent battery cells.

2. The modular battery module according to claim 1, characterized in that: The parallel row includes a straight row and a concave row, the concave row has a concave portion, and the concave row crosses and overlaps with the straight row via the concave portion.

3. The modular battery module according to claim 2, characterized in that: The modular battery module also includes a series row, and a plurality of the straight rows or a plurality of the concave rows are respectively arranged on the series row along the length direction of the series row.

4. The modular battery module according to claim 3, characterized in that: The series row is provided with a plurality of mounting holes along its length direction, each of the linear rows is provided with a first connection hole corresponding to the position of the mounting hole; and each of the concave rows is provided with a second connection hole corresponding to the position of the mounting hole on the concave portion.

5. The modular battery module according to claim 3, characterized in that: The series row has a bending portion, and the bending portion is used to connect with the total positive electrode or the total negative electrode of the modular battery module.

6. The modular battery module according to claim 2, characterized in that: The modular battery module also includes an insulating plate, which is arranged between the straight row and the concave row.

7. The modular battery module according to claim 1, characterized in that: The modular battery module also includes a positioning plate covering the plurality of battery cells, and the positioning plate is provided with positioning holes corresponding to the positions of the positive electrodes and the negative electrodes on each of the battery cells.

8. The modular battery module according to claim 7, characterized in that: The positioning plate is provided with a surrounding frame arranged around the outer periphery of the positioning hole; the first connection row and the second connection row both have pins for being arranged on the positive electrode or the negative electrode of the battery cell, and the shape of the pins matches the surrounding frame.

9. The modular battery module according to any one of claims 1 to 8, characterized in that: The modular battery module also includes end plates and enclosures, and the multiple battery cells are arranged between the end plates at both ends of the battery module; the enclosures respectively enclose the opposite sides of the battery module, and the two ends of each enclosure are respectively connected to the end plates.

10. The modular battery module according to claim 9, characterized in that: Symmetrically arranged connecting blocks are respectively provided on both sides of the end plate, and the connecting blocks are connected to the ends of the enclosure plate; screw holes are provided on the connecting blocks, and the screw holes are used to install fasteners to install the battery module on the carrier.

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