Battery electric connection module and battery module

Abstract

The utility model provides a battery electric connection module and a battery module. The battery electric connection module comprises a first series row used for electrically connecting a plurality of first battery cells; the second series row is used for electrically connecting a plurality of second battery cells; the connecting busbar comprises a first busbar connecting part and a second busbar connecting part which are electrically connected with each other; wherein the first busbar connecting part is directly connected with the corresponding first battery cell so as to be electrically connected with the first battery cell, and the second busbar connecting part is directly connected with the corresponding second battery cell so as to be electrically connected with the second battery cell. According to the utility model, the first busbar connecting part and the second busbar connecting part of the connecting busbar are directly and electrically connected with the first battery cell and the second battery cell respectively, so that compared with the related technology, the problem that the output-stage aluminum bar and the connecting busbar cannot be matched due to the tolerance problem in the manufacturing process is avoided; and finally, electrical connection failure is caused.

Description

Technical Field

[0001] The utility model relates to the field of batteries, and in particular to a battery electrical connection module and a battery module. Background Art

[0002] In the related art, the connecting busbar in most battery electrical connection modules is electrically connected to the output-level aluminum busbar, which is then electrically connected to the battery cell to achieve the flow of current. In this structure, it is often necessary to use bolts and other fixing parts to pass through the holes on the connecting busbar and the output-level aluminum busbar to fix the two. However, due to the manufacturing tolerance problem of the connecting busbar and the output-level aluminum busbar during the production process, the positions of the holes used for fixing the connecting busbar and the output-level aluminum busbar may deviate, resulting in the problem that the two cannot match, and the output-level aluminum busbar and the connecting busbar in the related art need to be fixed on the output-level base, which makes the component assembly process more complicated, and the output-level base will also occupy a certain amount of space. Utility Model Content

[0003] The embodiments of the present utility model provide a battery electrical connection module and a battery module, which can solve the above-mentioned problems.

[0004] In a first aspect, an embodiment of the present utility model provides a battery electrical connection module, which includes:

[0005] A first series row, for electrically connecting a plurality of first battery cells;

[0006] A second series row, for electrically connecting a plurality of second battery cells;

[0007] A connecting busbar, comprising a first busbar connecting portion and a second busbar connecting portion electrically connected to each other;

[0008] The first busbar connection portion is directly connected to the corresponding first battery cell to be electrically connected to the first battery cell, and the second busbar connection portion is directly connected to the corresponding second battery cell to be electrically connected to the second battery cell.

[0009] In one embodiment, the first busbar connection portion is used to electrically connect a first pole of a first battery cell, and the first series connection row is used to electrically connect a second pole of the first battery cell.

[0010] In one embodiment, the first series row includes a plurality of first connection units and a plurality of second connection units that are relatively arranged, and the plurality of first connection units and the plurality of second connection units are used to electrically connect a plurality of first battery cells; wherein the first busbar connection portion is located at one end of the plurality of first connection units, and is used to electrically connect to the first pole of the first battery cell, and the second connection unit among the plurality of second connection units, which is located at the end and close to the first busbar connection portion, is used to electrically connect to the second pole of the first battery cell.

[0011] In one embodiment, each first connection unit includes two first connection parts electrically connected to each other, and each second connection unit includes two second connection parts electrically connected to each other, and the two first connection parts are staggered with the two second connection parts; wherein each first connection part and the corresponding second connection part are used to electrically connect the same first battery cell, the two first connection parts of at least one first connection unit are used to electrically connect two adjacent first battery cells, and the two second connection parts of at least one second connection unit are electrically connected to two adjacent first battery cells, so as to connect multiple first battery cells in series.

[0012] In one embodiment, the second busbar connection portion is used to electrically connect a first pole of a second battery cell, and the second series connection bar is used to electrically connect a second pole of the second battery cell.

[0013] In one embodiment, the second series row includes a plurality of third connection units and a plurality of fourth connection units, and the plurality of third connection units and the plurality of fourth connection units are used to electrically connect a plurality of second battery cells; the plurality of third connection units are close to the plurality of second connection units; the second busbar connection portion is located at one end of the plurality of fourth connection units, and is used to electrically connect to a first pole of a second battery cell, and a third connection unit among the plurality of third connection units, which is located at the end and close to the second busbar connection portion, is used to electrically connect to a second pole of the second battery cell.

[0014] In one embodiment, each third connection unit includes two third connection parts electrically connected to each other, and each fourth connection unit includes two fourth connection parts electrically connected to each other, and the two third connection parts are staggered with the two fourth connection parts; wherein each third connection part and the corresponding fourth connection part are used to electrically connect the same first battery cell, the two third connection parts of at least one third connection unit are used to electrically connect two adjacent second battery cells, and the two fourth connection parts of at least one fourth connection unit are electrically connected to two adjacent second battery cells to connect multiple second battery cells in series.

[0015] In one embodiment, the connecting busbar further includes a main body, the first busbar connecting portion and the second busbar connecting portion are connected to the same side of the main body, and the first busbar connecting portion, the second busbar connecting portion and the main body are integrally formed.

[0016] In one embodiment, the battery electrical connection assembly further includes a bracket, and the first series bar, the second series bar, the main body, the first busbar connecting portion, and the second busbar connecting portion are all fixed on the bracket.

[0017] In one embodiment, the first busbar connecting portion and the second busbar connecting portion are welded to the bracket.

[0018] In one embodiment, the battery electrical connection module further includes a fixing portion surrounding the main body and used for fixing the main body to the box of the battery module.

[0019] In one embodiment, the bracket is provided with at least one avoiding portion, and the fixing portion is used to be fixed to the box body of the battery module through the avoiding portion.

[0020] In a second aspect, an embodiment of the utility model provides a battery module, comprising at least two battery electrical connection modules of the first aspect, and a connector connected between the battery electrical connection modules, and also comprising a box body, in which the battery electrical connection modules are installed.

[0021] The utility model provides a battery electrical connection module and a battery module, which directly and electrically connects the first busbar connection part and the second busbar connection part of the connecting busbar to the first battery cell and the second battery cell respectively, compared with the related art that the connecting busbar is electrically connected to the output-stage aluminum busbar, and then the output-stage aluminum busbar is electrically connected to the first battery cell and the second battery cell, thereby avoiding the problem that the output-stage aluminum busbar and the connecting busbar cannot match each other due to tolerance problems in the production process, which ultimately causes electrical connection failure. At the same time, the output-stage base in the related art is also removed, which reduces the space occupancy rate and the difficulty of component assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0023] Figure 1 It is a structural schematic diagram of a battery electrical connection module provided by an embodiment of the utility model;

[0024] Figure 2 yes Figure 1 An exploded view of a battery electrical connection module;

[0025] Figure 3 yes Figure 2 Part A of

[0026] Figure 4 It is a structural schematic diagram of a connecting busbar provided in an embodiment of the utility model;

[0027] Figure 5 It is a structural schematic diagram of a battery module provided by an embodiment of the utility model;

[0028] Explanation of the reference numerals: 1000, battery electrical connection module; 1010, first series row; 1011, first connection unit; 1012, second connection unit; 1013, first connection portion; 1014, second connection portion; 1020, second series row; 1021, third connection unit; 1022, fourth connection unit; 1023, third connection portion; 1024, fourth connection portion; 1030, connecting busbar; 1031, first busbar connection portion; 1032, second busbar connection portion; 1040, bracket; 1041, avoidance portion; 1050, connector; 1060, main body; 1070, fixing portion; 1080, protective layer; 2000, battery module. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model. In addition, it should be understood that the specific implementation methods described herein are only used to illustrate and explain the utility model, and are not used to limit the utility model. In the utility model, unless otherwise stated, the directional words used, such as "upper" and "lower", generally refer to the upper and lower parts of the device in actual use or working state, specifically the drawing direction in the accompanying drawings; while "inside" and "outside" refer to the outline of the device.

[0030] In the related art, the battery electrical connection module usually includes a connecting busbar, a plurality of output-level aluminum bars and a plurality of battery cells. Among them, the two ends of the connecting busbar and the output-level aluminum bars are provided with fixing holes for fixing. When the fixing holes on the two ends of the connecting busbar are aligned with the fixing holes on the output-level aluminum bars, bolts and other fixing parts are passed through the fixing holes of the two to lock them, that is, the output-level aluminum bars and the connecting busbar are fixed, and then the output-level aluminum bars at the two ends of the connecting busbar are electrically connected to different battery cells respectively, so as to realize the series connection between the battery cells at the two ends of the connecting busbar.

[0031] However, in the actual production process of hardware, there are often problems with manufacturing tolerances, which may result in that after the produced connecting busbar and the output-stage aluminum busbar are placed in a preset relative position, the projection of the fixing holes on the output-stage aluminum busbar on the connecting busbar may not be within the boundaries of the fixing holes on the connecting busbar, that is, there is a deviation in the positions of the fixing holes on the connecting busbar and the output-stage aluminum busbar, resulting in the inability of the fixing parts to pass through the two fixing holes for fixation.

[0032] In order to solve the problems in the related art, the embodiment of the present application provides a battery electrical connection module 1000. Please refer to Figure 1, Figure 2 and Figure 4 , Figure 1 1 is a schematic diagram of the structure of a battery electrical connection module 1000 provided in an embodiment of the utility model. Figure 2 yes Figure 1 Exploded diagram of Figure 4 It is a structural schematic diagram of a connecting busbar 1030 provided by an embodiment of the utility model. Among them, the battery electrical connection module 1000 includes a battery electrical connection assembly, which includes: a first series row 1010, used to electrically connect multiple first battery cells (not shown in the figure); a second series row 1020, used to electrically connect multiple second battery cells (not shown in the figure); a connecting busbar 1030, including a first busbar connecting portion 1031 and a second busbar connecting portion 1032 electrically connected to each other; wherein, the first busbar connecting portion 1031 is directly connected to the corresponding first battery cell to be electrically connected to the first battery cell, and the second busbar connecting portion 1032 is directly connected to the corresponding second battery cell to be electrically connected to the second battery cell.

[0033] Compared with the related art, this embodiment directly electrically connects the first busbar connection part 1031 and the second busbar connection part 1032 of the connecting busbar 1030 to the first battery cell and the second battery cell respectively. The structure of this embodiment does not need to be connected to the battery cell through the output-stage aluminum bar, so there is no need to use bolts or other fixings to fix the output-stage aluminum bar and the connecting busbar 1030, thereby avoiding the problem of the output-stage aluminum bar and the connecting busbar 1030 not matching due to tolerance problems in hardware manufacturing, which ultimately causes electrical connection failure. At the same time, because the first busbar connection part 1031 and the second busbar connection part 1032 replace the output-stage aluminum bar in the related art, the output-stage base is not required in the structure of this embodiment, thereby reducing the space occupancy rate and the difficulty of component assembly.

[0034] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 4 The first busbar connection portion 1031 is used to electrically connect a first pole of a first battery cell, and the first series row 1010 is used to electrically connect a second pole of the first battery cell. Specifically, the first busbar connection portion 1031 on the busbar 1030 is directly electrically connected to a first pole of a first battery cell, and the first series row 1010 opposite to the first busbar connection portion 1031 is directly electrically connected to the second pole of the first battery cell.

[0035] In this embodiment, the first busbar connecting portion 1031 on the connecting busbar 1030 and the first series row 1010 are electrically connected to the first pole and the second pole of the same first battery cell respectively, thereby achieving electrical connection between the connecting busbar 1030 and the first series row 1010 .

[0036] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 3 , Figure 3 yes Figure 2 The first series row 1010 includes a plurality of first connection units 1011 and a plurality of second connection units 1012 arranged opposite to each other, and the plurality of first connection units 1011 and the plurality of second connection units 1012 are used to electrically connect a plurality of first battery cells; wherein the first busbar connection portion 1031 is located at one end of the plurality of first connection units 1011, and is used to electrically connect to the first pole of the first battery cell, and the second connection unit 1012 located at the end and close to the first busbar connection portion 1031 among the plurality of second connection units 1012 is used to electrically connect to the second pole of the first battery cell.

[0037] In this embodiment, the first busbar connection portion 1031 is electrically connected to the first pole of a first battery cell, and the second connection unit 1012 located at the end among the multiple second connection units 1012 is electrically connected to the second pole of the same first battery cell, and then the multiple first connection units 1011 and the multiple second connection units 1012 are used to connect the multiple first battery cells, so that the multiple first battery cells are connected in series, so as to collect data information of the multiple first battery cells.

[0038] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 3 Each first connection unit 1011 includes two first connection parts 1013 electrically connected to each other, and each second connection unit 1012 includes two second connection parts 1014 electrically connected to each other, and the two first connection parts 1013 and the two second connection parts 1014 are staggered; wherein each first connection part 1013 and the corresponding second connection part 1014 are used to electrically connect the same first battery cell, and the two first connection parts 1013 of at least one first connection unit 1011 are used to electrically connect two adjacent first battery cells, and the two second connection parts 1014 of at least one second connection unit 1012 are electrically connected to two adjacent first battery cells, so as to connect multiple first battery cells in series.

[0039] Specifically, the first busbar connection portion 1031 on the connecting busbar 1030 is first directly electrically connected to the first pole of the first first battery cell, a second connection portion 1014 in the second connection unit 1012 opposite to the first busbar connection portion 1031 is directly electrically connected to the second pole of the first first battery cell, and another second connection portion 1014 is directly electrically connected to the first pole of the second first battery cell. A first connection portion 1013 in the first connection unit 1011 adjacent to the first busbar connection portion 1031 and opposite to another second connection portion 1014 is directly electrically connected to the second pole of the second first battery cell. Another first connection part 1013 in the first connection unit 1011 is directly electrically connected to the first pole of the third first battery cell, and so on, until the first connection part 1013 in the first connection unit 1011 far away from the first busbar connection part 1031 is directly electrically connected to the second pole of the last first battery cell, and the second connection part 1014 in the second connection unit 1012 far away from the first busbar connection part 1031 is directly electrically connected to the first pole of the last first battery cell. Finally, the series connection between multiple first battery cells is achieved.

[0040] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 3 The second busbar connection portion 1032 is used to electrically connect the first pole of a second battery cell, and the second series row 1020 is used to electrically connect the second pole of the second battery cell. Specifically, the second busbar connection portion 1032 on the connecting busbar 1030 is directly electrically connected to the second pole of a second battery cell, and the second series row 1020 opposite to the second busbar connection portion 1032 is directly electrically connected to the first pole of the second battery cell.

[0041] In this embodiment, the second busbar connecting portion 1032 on the connecting busbar 1030 and the second series bar 1020 are electrically connected to the second pole and the first pole of the same second battery cell respectively, thereby achieving electrical connection between the connecting busbar 1030 and the second series bar 1020 .

[0042] In some embodiments, please refer to Figure 2 , Figure 3 and Figure 4The second series row 1020 includes a plurality of third connection units 1021 and a plurality of fourth connection units 1022, and the plurality of third connection units 1021 and the plurality of fourth connection units 1022 are used to electrically connect the plurality of second battery cells; the plurality of third connection units 1021 are close to the plurality of second connection units 1012; the second busbar connection portion 1032 is located at one end of the plurality of fourth connection units 1022, and is used to electrically connect to the first pole of a second battery cell, and the third connection unit 1021 located at the end and close to the second busbar connection portion 1032 among the plurality of third connection units 1021 is used to electrically connect to the second pole of the second battery cell.

[0043] In this embodiment, the second busbar connection portion 1032 is electrically connected to the second pole of a second battery cell, and the third connection unit 1021 located at the end among the plurality of third connection units 1021 is electrically connected to the first pole of the same second battery cell, and then the plurality of second battery cells are connected through the plurality of third connection units 1021 and the plurality of fourth connection units 1022, so that the plurality of second battery cells are connected in series, so as to collect data information of the plurality of second battery cells.

[0044] In some embodiments, please refer to Figure 2 , Figure 3 and Figure 4 , Figure 3 yes Figure 1 The enlarged schematic diagram of the C part in the figure. Each third connection unit 1021 includes two third connection parts 1023 electrically connected to each other, and each fourth connection unit 1022 includes two fourth connection parts 1024 electrically connected to each other, and the two third connection parts 1023 and the two fourth connection parts 1024 are staggered; wherein each third connection part 1023 and the corresponding fourth connection part 1024 are used to electrically connect the same first battery cell, and the two third connection parts 1023 of at least one third connection unit 1021 are used to electrically connect two adjacent second battery cells, and the two fourth connection parts 1024 of at least one fourth connection unit 1022 are electrically connected to two adjacent second battery cells, so as to connect multiple second battery cells in series.

[0045] Specifically, on the basis that the first busbar connection part 1031 on the connection busbar 1030 is directly electrically connected to the first pole of the first battery cell, the second busbar connection part 1032 on the connection busbar 1030 is firstly directly electrically connected to the second pole of the first second battery cell, a third connection part 1023 in the third connection unit 1021 opposite to the second busbar connection part 1032 is directly electrically connected to the first pole of the first second battery cell, and another third connection part 1023 is directly electrically connected to the second pole of the second second battery cell. A fourth connection part 1024 in the fourth connection unit 1022 adjacent to the second busbar connection part 1032 and opposite to another third connection part 1023 is directly electrically connected to the first pole of the second second battery cell. Another fourth connection part 1024 in the fourth connection unit 1022 is directly electrically connected to the second pole of the third second battery cell, and so on, until the fourth connection part 1024 in the fourth connection unit 1022 far from the second busbar connection part 1032 is directly electrically connected to the first pole of the last second battery cell, and the third connection part 1023 in the third connection unit 1021 far from the second busbar connection part 1032 is directly electrically connected to the second pole of the last second battery cell. Finally, multiple second battery cells are connected in series.

[0046] In some embodiments, see Figure 4 , Figure 4 1 is a schematic diagram of the structure of the connecting busbar 1030 provided in an embodiment of the utility model. The connecting busbar 1030 also includes a main body 1060, a first busbar connecting part 1031 and a second busbar connecting part 1032 are connected to the same side of the main body 1060, and the first busbar connecting part 1031, the second busbar connecting part 1032 and the main body 1060 are integrally formed.

[0047] In this embodiment, the first busbar connection part 1031, the second busbar connection part 1032 and the main body 1060 are designed to be integrally formed. In the related art, since the busbar 1030 needs to be fixed by bolts and other fixings, in order to prevent the fixings from damaging the busbar 1030, it is often necessary to select high-strength six-series aluminum as the material of the busbar 1030, and the cost of using six-series aluminum is high. In this embodiment, firstly, in the structure of the busbar 1030, no fixings are required to fix the busbar 1030, thereby reducing the difficulty of installing the busbar 1030. In addition, a lower-cost first-series aluminum can be selected as the material of the busbar 1030, thereby reducing the production cost of the busbar 1030.

[0048] It should be noted that the present application does not limit the material of the connecting busbar 1030. The above examples are only for more clearly and comprehensively demonstrating the core ideas and methods of the present invention so as to better understand the implementation methods of the present invention. They are by no means intended to limit the scope of the present invention. Any obvious modifications or equivalent substitutions made without departing from the essence of the present invention should be deemed to be within the scope of protection of the present invention.

[0049] In some embodiments, please refer to Figure 1 and Figure 2 The battery electrical connection assembly further includes a bracket 1040 , and the first series bar 1010 , the second series bar 1020 , the main body 1060 , the first busbar connection portion 1031 , and the second busbar connection portion 1032 are all fixed on the bracket 1040 .

[0050] In this embodiment, by fixing the first series row 1010, the second series row 1020, the main body 1060, the first busbar connection part 1031 and the second busbar connection part 1032 on the bracket 1040, the positions of the first series row 1010, the second series row 1020, the main body 1060, the first busbar connection part 1031 and the second busbar connection part 1032 and the bracket 1040 remain relatively stable, thereby ensuring the stability of the battery electrical connection module 1000 when collecting data of multiple batteries.

[0051] In some embodiments, please refer to Figure 4 The battery electrical connection module 1000 surrounds the main body 1060 and is used to fix the main body 1060 to the fixing part 1070 of the box of the battery module 2000. This ensures that the main body 1060 and the box of the battery module 2000 are relatively stable. Furthermore, a protective layer 1080 is provided on the surface where the main body 1060 and the fixing part 1070 contact, so as to prevent the fixing part 1070 from sliding and causing wear to the main body 1060.

[0052] In some embodiments, please refer to Figure 5 , Figure 5 1 is a schematic diagram of the structure of the battery module 2000 provided in an embodiment of the utility model. The bracket 1040 is provided with at least one avoidance portion 1041, and the fixing portion 1070 is used to be fixed to the box of the battery module 2000 through the avoidance portion 1041. Due to the existence of the avoidance portion 1041, the fixing portion 1070 has sufficient space to be fixed to the box of the battery module 2000, thereby ensuring the stability between the fixing portion 1070 and the box of the battery module 2000.

[0053] The embodiment of the utility model provides a battery electrical connection module 1000. Compared with the related art, the solution of the utility model directly electrically connects the first busbar connection part 1031 and the second busbar connection part 1032 of the connecting busbar 1030 to the first battery cell and the second battery cell respectively. The structure of this embodiment does not need to be connected to the battery cell through the output-stage aluminum bar, so there is no need to use bolts and other fixings to fix the output-stage aluminum bar and the connecting busbar 1030, avoiding the problem of the output-stage aluminum bar and the connecting busbar 1030 not matching due to tolerance problems in hardware manufacturing, which ultimately causes electrical connection failure. At the same time, the output-stage base in the related art is also removed, which reduces the space occupancy rate and the difficulty of component assembly.

[0054] The embodiment of the utility model also provides a battery module 2000. The battery module 2000 includes at least two of the above-mentioned battery electrical connection modules 1000, and a connector 1050 connected between the battery electrical connection modules 1000, and also includes a box (not shown in the figure), and the battery electrical connection module 1000 is installed in the box. Among them, the connector 1050 is used to connect two adjacent battery electrical connection modules 1000 to realize the transmission of battery cell data information between different battery electrical connection modules 1000.

[0055] The battery module 2000 has all the advantages of the battery electrical connection module 1000 described above, which will not be described in detail here.

[0056] The above is a detailed introduction to the embodiments of the present invention. Specific examples are used in this article to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method and core idea of ​​the present invention. At the same time, for technicians in this field, according to the idea of ​​the present invention, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A battery electrical connection module, characterized in that: A battery electrical connection assembly is included, wherein the battery electrical connection assembly includes: A first series row, for electrically connecting a plurality of first battery cells; A second series row, for electrically connecting a plurality of second battery cells; A connecting busbar, comprising a first busbar connecting portion and a second busbar connecting portion electrically connected to each other; The first busbar connection portion is directly connected to the corresponding first battery cell to be electrically connected to the first battery cell, and the second busbar connection portion is directly connected to the corresponding second battery cell to be electrically connected to the second battery cell.

2. The battery electrical connection module according to claim 1, characterized in that: The first busbar connection portion is used to electrically connect a first pole of a first battery cell, and the first series connection row is used to electrically connect a second pole of the first battery cell.

3. The battery electrical connection module according to claim 2, characterized in that: The first series row includes a plurality of first connection units and a plurality of second connection units that are relatively arranged, and the plurality of first connection units and the plurality of second connection units are used to electrically connect the plurality of first battery cells; wherein the first busbar connection portion is located at one end of the plurality of first connection units, and is used to electrically connect to the first pole of the first battery cell, and the second connection unit located at the end and close to the first busbar connection portion among the plurality of second connection units is used to electrically connect to the second pole of the first battery cell.

4. The battery electrical connection module according to claim 3, characterized in that: Each of the first connection units includes two first connection parts electrically connected to each other, and each of the second connection units includes two second connection parts electrically connected to each other, and the two first connection parts are staggered with the two second connection parts; wherein, each of the first connection parts and the corresponding second connection parts are used to electrically connect the same first battery cell, and the two first connection parts of at least one of the first connection units are used to electrically connect two adjacent first battery cells, and the two second connection parts of at least one of the second connection units are electrically connected to two adjacent first battery cells to connect multiple first battery cells in series.

5. The battery electrical connection module according to claim 1, characterized in that: The second busbar connection portion is used to electrically connect a first pole of a second battery cell, and the second series connection row is used to electrically connect a second pole of the second battery cell.

6. The battery electrical connection module according to claim 4, characterized in that: The second series row includes a plurality of third connection units and a plurality of fourth connection units, and the plurality of third connection units and the plurality of fourth connection units are used to electrically connect the plurality of second battery cells; The plurality of third connection units are close to the plurality of second connection units; the second busbar connection portion is located at one end of the plurality of fourth connection units, and is used to be electrically connected to the first pole of a second battery cell; the third connection unit located at the end and close to the second busbar connection portion among the plurality of third connection units is used to be electrically connected to the second pole of the second battery cell.

7. The battery electrical connection module according to claim 6, characterized in that: Each of the third connection units includes two third connection parts electrically connected to each other, and each of the fourth connection units includes two fourth connection parts electrically connected to each other, and the two third connection parts are staggered with the two fourth connection parts; wherein each of the third connection parts and the corresponding fourth connection part are used to electrically connect the same first battery cell, and the two third connection parts of at least one of the third connection units are used to electrically connect two adjacent second battery cells, and the two fourth connection parts of at least one of the fourth connection units are electrically connected to two adjacent second battery cells to connect multiple second battery cells in series.

8. The battery electrical connection module according to any one of claims 1 to 7, characterized in that: The connecting busbar further includes a main body, the first busbar connecting part and the second busbar connecting part are connected to the same side of the main body, and the first busbar connecting part, the second busbar connecting part and the main body are integrally formed.

9. The battery electrical connection module according to claim 8, characterized in that: The battery electrical connection assembly further includes a bracket, and the first series row, the second series row, the main body, the first busbar connection portion, and the second busbar connection portion are all fixed on the bracket.

10. The battery electrical connection module according to claim 9, characterized in that: The first busbar connecting portion and the second busbar connecting portion are welded to the bracket.

11. The battery electrical connection module according to claim 9, characterized in that: The invention also includes a fixing part surrounding the main body and used for fixing the main body to the box of the battery module.

12. The battery electrical connection module according to claim 11, characterized in that: The bracket is provided with at least one avoidance portion, and the fixing portion is used to be fixed to the box body of the battery module through the avoidance portion.

13. A battery module, characterized in that: The invention comprises at least two battery electrical connection modules according to any one of claims 1 to 12, and a connector connected between the battery electrical connection modules, and also comprises a box body, wherein the battery electrical connection modules are installed in the box body.

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