Battery module and battery pack

Abstract

A battery module (100) and a battery pack. The battery module (100) comprises a mounting frame (110), a battery cell assembly (120) and a connection assembly (130). The battery cell assembly (120) comprises two battery cell groups (121) distributed in a first direction (X) in the mounting frame (110), each battery cell group (121) comprising a plurality of battery cell units (1210) successively distributed in a second direction (Y), each battery cell unit (1210) comprising two battery cells (1211) successively distributed in the second direction (Y), and each battery cell (1211) comprising a first terminal (1212) and a second terminal (1213) distributed in the first direction (X); the first terminals (1212) of two adjacent battery cells (1211) distributed in the first direction (X) are close to each other; the first terminals (1212) of two adjacent battery cells (1211) distributed in the first direction (X) are connected by means of a first connection member (131) of the connection assembly (130); and the second terminals (1213) of the two battery cells (1211) of each battery cell unit (1210) are connected by means of a second connection member (132) of the connection assembly (130).

Description

Battery modules and battery packs

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on April 2, 2024, with application number 202420680874.5. The entire contents of the above application are incorporated by reference into this application. Technical Field

[0002] The present application relates to the field of battery technology, and in particular to a battery module and a battery pack. Background Art

[0003] In the related art, multiple rows of battery cells in a battery module are installed in a mounting frame. During the charging and discharging process, the battery cells will generate a large expansion force in the direction of their arrangement. This expansion force acts on the end plates on both sides of the mounting frame along the direction of the battery cell arrangement, squeezing the end plates on both sides of the mounting frame to produce bending deformation, causing the battery cells to shift in the direction of their arrangement. SUMMARY OF THE INVENTION

[0004] However, since the deformation resistance of the middle part of the end plates on both sides of the mounting frame is weak, the middle part of the end plates on both sides of the mounting frame will produce greater bending deformation under the action of the expansion force, causing the poles corresponding to the battery cells and the middle part of the end plates on both sides of the mounting frame to produce a large displacement, which in turn causes the poles to be subjected to greater shear force or torque, which can easily cause the poles of the battery cells to be damaged.

[0005] The present application provides a battery module. The battery module includes:

[0006] Mounting rack;

[0007] A battery cell assembly, comprising two battery cell groups distributed in the mounting frame along a first direction, the battery cell groups comprising a plurality of battery cell units sequentially distributed along a second direction, the battery cell units comprising two battery cells sequentially distributed along the second direction, the battery cells comprising a first pole and a second pole distributed along the first direction, the first poles of two adjacent battery cells distributed along the first direction being close to each other, and the first direction and the second direction forming an angle;

[0008] The connecting assembly includes multiple first connecting members and multiple second connecting members. The first poles of two adjacent battery cells distributed along the first direction are connected by the first connecting members, and the second poles of two battery cells of the battery cell unit are connected by the second connecting members.

[0009] The present application also provides a battery pack, comprising:

[0010] shell;

[0011] A battery module, the battery module is the battery module as described above, the battery module is arranged in the shell, the battery module includes a mounting frame, a battery cell assembly and a connecting assembly, the battery cell assembly includes two battery cell groups distributed in the mounting frame along a first direction, the battery cell group includes a plurality of battery cell units distributed in sequence along a second direction, the battery cell unit includes two battery cells distributed in sequence along the second direction, the battery cell includes a first pole and a second pole distributed along the first direction, the first poles of two adjacent battery cells distributed along the first direction are close to each other, and the first direction forms an angle with the second direction; the connecting assembly includes a plurality of first connecting members and a plurality of second connecting members, the first poles of two adjacent battery cells distributed along the first direction are connected by the first connecting member, and the second poles of two battery cells of the battery cell unit are connected by the second connecting member. Beneficial effects

[0012] The battery module provided by the present application connects the first poles of two adjacent battery cells distributed along the first direction through a first connector, and connects the second poles of the two battery cells of the battery cell unit through a second connector, and can connect multiple battery cells of the battery cell assembly in series or in parallel through multiple first connectors and second connectors of the connecting assembly. Moreover, since the expansion displacement of the first poles of two adjacent battery cells distributed along the first direction in the second direction is basically the same, after the first poles of two adjacent battery cells distributed along the first direction are connected through the first connector, the first poles of the two adjacent battery cells distributed along the first direction can drive the first connector connected thereto to displace synchronously, so that the distance between the two first poles connected by the first connector remains basically unchanged, and the force between the first connector and the two first poles also remains basically unchanged. Therefore, it can avoid the problem that after the first pole is displaced by the expansion of the battery cell, the first pole is subjected to a large shear force or torsional force, which causes damage to the first pole.

[0013] The battery pack provided by the present application connects the first poles of two adjacent battery cells distributed along a first direction of the battery module via a first connector, and connects the second poles of the two battery cells of the battery unit via a second connector. When the battery cells expand, the first poles of the two adjacent battery cells distributed along the first direction can drive the first connector connected to them to displace synchronously, so that the distance between the two first poles connected by the first connector remains substantially unchanged, and the force between the first connector and the two first poles also remains substantially unchanged. Therefore, the problem of the first poles being damaged by large shear forces or torsional forces caused by the displacement of the first poles due to battery cell expansion can be avoided, thereby improving the stability of the battery pack. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] FIG1 is a schematic diagram of the exploded structure of an embodiment of a battery module provided in an embodiment of the present application;

[0015] FIG2 is a schematic diagram of the coordinated structure of a battery cell assembly, a connection assembly, and a collection circuit according to an embodiment of the present application;

[0016] FIG3 is a schematic diagram of the coordinated structure of a mounting frame, a cell assembly, a connection assembly, and a collection circuit of a battery module according to an embodiment of the present application;

[0017] FIG4 is a schematic diagram of the exploded structure of an embodiment of the mounting bracket provided in an embodiment of the present application.

[0018] Description of reference numerals:

[0019] Battery module 100; mounting frame 110; end plate 111; through hole 1111; side plate 112; connecting plate 113; adhesive layer 114; cavity 115; sub-cavity 1151; battery cell assembly 120; battery cell group 121; battery cell unit 1210; battery cell 1211; first pole 1212; second pole 1213; connecting assembly 130; first connecting member 131; second connecting member 132; collection circuit 140; collection harness 141; insulating plate 150; first mounting slot 151; second mounting slot 152; first connecting hole 153; second connecting hole 154; connecting hole 155; first direction X; second direction Y. Modes for Carrying Out the Invention

[0020] The multiple cells of the battery module are installed in the mounting frame. The cells will expand and deform during the charging and discharging process. When the cells expand, a large expansion force will be generated in the arrangement direction of the multiple cells. This expansion force acts on both sides of the mounting frame along the arrangement direction of the cells, squeezing both sides of the mounting frame to cause bending deformation, causing the cells to be displaced in the arrangement direction. Correspondingly, the poles on the cells will also be displaced.

[0021] The ends of the mounting frame along the cell arrangement direction are connected to other structures of the mounting frame. Therefore, these other structures exert tension on the ends, limiting their bending deformation. This results in the ends having stronger deformation resistance, while the middle portions of the mounting frame have weaker deformation resistance. When the sides of the mounting frame are squeezed by the expansion force of the cells, the middle portions of the mounting frame will experience greater bending deformation than the ends, causing the cells to move more relative to the middle portions of the mounting frame than to the ends.

[0022] In particular, when the battery module includes two rows of cells arranged side by side, the space between the two rows of cells corresponds to the middle of the two sides of the mounting frame. Therefore, when the cells expand, the ends of the two rows of cells that are close to each other will experience a larger displacement in the direction of the cell arrangement. Moreover, the closer the cells are to the two sides of the mounting frame, the greater the displacement of the ends corresponding to the middle of the two sides of the mounting frame. Correspondingly, the displacement of the poles located at the ends of the cells corresponding to the middle of the two sides of the mounting frame also increases, and the distance between the poles located at the ends of the two adjacent cells corresponding to the middle of the two sides of the mounting frame in the direction of the cell arrangement also increases.

[0023] Taking the mounting frame formed by end plates and side plates in the related art as an example: the mounting frame includes two end plates arranged opposite to each other along the arrangement direction of the multiple battery cells, and two side plates extending along the arrangement direction of the multiple battery cells. The two ends of the two end plates are connected one-to-one by the side plates, and enclosed to form a cavity configured to mount the multiple battery cells. When the battery cells expand and exert an expansion force on the end plates, the ends of the end plates are subjected to the tension of the side plates, while the middle portion of the end plates is not subjected to the tension of the side plates. Therefore, the middle portion of the end plates will experience greater bending deformation than the ends of the end plates, resulting in a greater displacement of the battery cells and the corresponding positions of the middle portion of the end plates.

[0024] In the related art, in the arrangement direction of the battery cells, the poles located at the corresponding ends in the middle of both sides of the two adjacent battery cells and the mounting frame are connected by a connecting piece. When the distance between the two poles connected to the connecting piece increases, the connecting piece will apply a larger shear force or torque to the pole, which may easily cause damage to the pole of the battery cell.

[0025] In order to avoid the above problems, an embodiment of the present application provides a battery module.

[0026] FIG1 is a schematic diagram of the exploded structure of an embodiment of a battery module provided by an embodiment of the present application. As shown in FIG1 , the battery module 100 includes a mounting frame 110, a cell assembly 120, and a connection assembly 130. The cell assembly 120 includes a plurality of cells 1211 disposed within the mounting frame 110. The cells 1211 include a first electrode 1212 and a second electrode 1213. The connection assembly 130 is configured to electrically connect to the first electrode 1212 and the second electrode 1213 of the plurality of cells 1211 of the cell assembly 120 to achieve series or parallel connection between the plurality of cells 1211 of the cell assembly 120.

[0027] As shown in Figures 1 to 3, the battery cell assembly 120 includes two battery cell groups 121 distributed along a first direction X within the mounting frame 110. The battery cell groups 121 include a plurality of battery cell units 1210 distributed sequentially along a second direction Y. Each battery cell unit 1210 includes two battery cells 1211 distributed sequentially along the second direction Y. The first direction X and the second direction Y form an angle. That is, the battery module 100 includes two rows of battery cells 1211 disposed within the mounting frame 110. The two rows of battery cells 1211 are distributed along the first direction X, and the battery cells 1211 in each row are arranged sequentially along the second direction Y. The first direction X and the second direction Y can be perpendicular, or the angle formed by the intersection of the first direction X and the second direction Y can be acute.

[0028] It should be noted that, in addition to the battery cell unit 1210, the battery cell group 121 may also include one or more individual battery cells 1211, and the one or more individual battery cells 1211 and the multiple battery cell units 1210 are distributed along the second direction Y. In addition, the battery cell assembly 120 may also include three, four, or more battery cell groups 121, and the multiple battery cell groups 121 are sequentially distributed along the first direction X within the mounting frame 110.

[0029] The battery cells 1211 include first poles 1212 and second poles 1213 distributed along a first direction X. Thus, the thickness direction of the battery cells 1211 is parallel to the second direction Y. When the battery cells 1211 expand, they primarily displace along the second direction Y, thereby causing the first poles 1212 and second poles 1213 of the battery cells 1211 to displace along the second direction Y.

[0030] It should be noted that the polarities of the first electrode 1212 and the second electrode 1213 are opposite, so the first electrode 1212 can be a positive electrode and the second electrode 1213 can be a negative electrode; or, the first electrode 1212 can be a negative electrode and the second electrode 1213 can be a positive electrode, which can be determined according to the wiring method of the multiple battery cells 1211 of the battery module 100.

[0031] 1 to 3 , the first poles 1212 of two adjacent battery cells 1211 distributed along the first direction X are close to each other, while the second poles 1213 of two adjacent battery cells 1211 distributed along the first direction X are far away from each other.

[0032] The first poles 1212 of the battery cells 1211 correspond to the middle portions of the mounting frame 110 on either side, while the second poles 1213 of the battery cells 1211 correspond to the ends of the mounting frame 110 on either side. When the battery cells 1211 expand, the first poles 1212 of two adjacent battery cells 1211 along the first direction X experience equal displacement, and the displacement of the battery cells 1211 in the second direction Y is greater than the displacement of the second poles 1213 in the second direction Y. Furthermore, the first poles 1212 of battery cells 1211 closer to the mounting frame 110 along the second direction Y experience greater displacement, resulting in an increase in the distance between the first poles 1212 of two adjacent battery cells 1211 along the second direction Y.

[0033] If the first poles 1212 of two adjacent battery cells 1211 along the second direction Y are connected by a connecting piece, the first poles 1212 of the two adjacent battery cells 1211 along the second direction Y may be subjected to a large shear force or torsional force, thereby causing damage to the first poles 1212 of the battery cells 1211.

[0034] To avoid the above problems, in some embodiments, the connecting assembly 130 includes multiple first connecting members 131 and multiple second connecting members 132, the first poles 1212 of two adjacent battery cells 1211 distributed along the first direction X are connected by the first connecting member 131, and the second poles 1213 of the two battery cells 1211 of the battery cell unit 1210 are connected by the second connecting member 132.

[0035] Thus, the multiple battery cells 1211 of the battery cell assembly 120 can be connected in series or in parallel via the multiple first connectors 131 and second connectors 132 of the connecting assembly 130. Furthermore, because the expansion displacements of the first poles 1212 of two adjacent battery cells 1211 distributed along the first direction X in the second direction Y are substantially the same, after the first poles 1212 of two adjacent battery cells 1211 distributed along the first direction X are connected via the first connector 131, the first poles 1212 of the two adjacent battery cells 1211 distributed along the first direction X can drive the first connector 131 connected thereto to displace synchronously. That is, when the battery cell 1211 expands, the distance between the two first poles 1212 connected to the first connector 131 remains substantially unchanged, and the force between the first connector 121 and the two first poles 1212 also remains substantially unchanged. Therefore, it is possible to avoid the problem that after the battery cell 1211 expands and causes the first pole 1212 to be displaced, the first pole 1212 is subjected to a large shear force or torsional force, which may cause the first pole 1212 to be damaged.

[0036] The plurality of first connectors 131 of the connection assembly 130 are arranged in a row along the second direction Y. The number of the plurality of first connectors 131 is equal to the number of battery cells 1211 included in the battery cell group 121, and a portion of the plurality of first connectors 131 is electrically connected to the first poles 1212 of the plurality of battery cells 1211 of one battery cell group 121 in a one-to-one correspondence, while another portion of the plurality of first connectors 131 is electrically connected to the first poles 1212 of the plurality of battery cells 1211 of another battery cell group 121 in a one-to-one correspondence, thereby achieving the connection of the first poles 1212 of two adjacent battery cells 1211 distributed along the first direction X through the first connectors 131.

[0037] In some embodiments, the polarities of the first poles 1212 of two adjacent battery cells 1211 distributed along the first direction X can be opposite. Thus, the two adjacent battery cells 1211 distributed along the first direction X can be connected in series via the first connector 131. One of the two first poles 1212 connected to the first connector 131 is a positive pole, while the other is a negative pole. Thus, the two battery cells 1211 distributed along the first direction X are connected in series via the first connector 131.

[0038] Similarly, the polarities of the second poles 1213 of the two battery cells 1211 of the battery cell unit 1210 can be opposite. Thus, the two battery cells of the battery cell unit 1210 are connected in series via the second connector 132. Of the two second poles 1213 connected to the second connector 132, one second pole 1213 is a positive pole, while the other second pole 1213 is a negative pole. Thus, the second poles 1213 of the two battery cells 1211 of the battery cell unit 1210 are connected in series via the second connector 132.

[0039] In some preferred embodiments, the polarities of the first poles 1212 of two adjacent battery cells 1211 distributed along the first direction X can be opposite, and the polarities of the second poles 1213 of the two battery cells 1211 of the battery cell unit 1210 can be opposite. Furthermore, the first poles 1212 of two adjacent battery cells 1211 of two battery cell units 1210 of one battery cell group 121 are connected to the first poles 1212 of two battery cells 1211 of one battery cell unit 1210 of another battery cell group 121 in a one-to-one correspondence via two first connectors 131, thereby enabling the multiple battery cells 1211 of the two battery cell groups 121 to be sequentially connected in series along the dotted line direction in FIG. 3 using the multiple first connectors 131 and the multiple second connectors 132.

[0040] As shown in Figures 1 to 3, the battery module 100 further includes a data acquisition circuit 140 extending along the second direction Y. The plurality of first connectors 131 and the plurality of second connectors 132 are electrically connected to the data acquisition circuit 140. Thus, the data acquisition circuit 140 can acquire the voltage signal of the pole 1212 of each battery cell 1211.

[0041] In some embodiments, the acquisition circuit 140 includes two acquisition wire bundles 141 extending along the second direction Y. The two acquisition wire bundles 141 are distributed on both sides of the first connector 131 along the first direction X. The acquisition wire bundles 141 are electrically connected to the second connector 132 and part of the first connector 131 located on both sides thereof along the first direction X.

[0042] Among them, some of the multiple first connectors 131 are electrically connected to one collection harness 141, and another part of the multiple first connectors 131 are electrically connected to another collection harness 141, so that each first connector 131 is electrically connected to the collection circuit 140.

[0043] Specifically, the first connectors 131 spaced apart from each other among the plurality of first connectors 131 can be electrically connected to one of the collection harnesses 141, while the other first connectors 131 among the plurality of first connectors 131 are electrically connected to another collection harness 141. Of course, adjacent first connectors 131 among the plurality of first connectors 131 can also be electrically connected to one of the collection harnesses 141, while another portion of the first connectors 131 among the plurality of first connectors 131 are electrically connected to another collection harness 141.

[0044] As shown in Figure 1, the battery module 100 also includes an insulating plate 150 covering the cell assembly 120. The connecting assembly 130 and the data collection circuit 140 are located on the side of the insulating plate 150 facing away from the cell assembly 120, thereby isolating the cells 1211 of the cell assembly 120 from the connecting assembly 130 and the data collection circuit 140, thereby preventing the connecting assembly 130 or the data collection circuit 140 from short-circuiting the cells 1211 of the cell assembly 120. The insulating plate 150 defines a plurality of connection holes 155. Some of these connection holes 155 are configured to electrically connect the first connector 131 to the first terminal 1212, or some of these connection holes 155 are configured to electrically connect the second connector 132 to the second terminal 1213. The plurality of connection holes 155 include a first connection hole 153 and a second connection hole 154 defined in the insulating plate 150. The first connection hole 153 is configured for connecting the first connector 131 to the first pole 1212 , and the second connection hole 154 is configured for electrically connecting the second connector 132 to the second pole 1213 .

[0045] Specifically, the first connector 131 and the second connector 132 are arranged in a plate or sheet shape. A first mounting groove 151 for mounting the first connector 131 is defined on the side of the insulating plate 150 facing away from the cell assembly 120. A first connection hole 153 is defined at the bottom of the first mounting groove 151. The first connector 131 is mounted in the first mounting groove 151 and electrically connects to the first pole 1212 of the cell 1211 through the first connection hole 153 at the bottom of the first mounting groove 151. A second mounting groove 152 for mounting the second connector 132 is defined on the side of the insulating plate 150 facing away from the cell assembly 120. A second connection hole 154 is defined at the bottom of the second mounting groove 152. The second connector 132 is mounted in the second mounting groove 152 and electrically connects to the second pole 1213 of the cell 1211 through the second connection hole 154 at the bottom of the second mounting groove 152. The first connector 131 and the second connector 132 can be fixedly connected to the pole 1212 of the battery cell 1211 by welding.

[0046] As shown in FIG1 , the mounting frame 110 includes two end plates 111 disposed opposite each other along the second direction Y, and two side plates 112 disposed opposite each other along the first direction X. The ends of the end plates 111 are connected to the ends of the two side plates 112 in a one-to-one correspondence, enclosing a cavity 115. The battery cell assembly 120 is disposed within the cavity 115 of the mounting frame 110.

[0047] In some embodiments, as shown in Figures 1 and 4, the mounting frame 110 further includes a connecting plate 113 extending along the second direction Y. The connecting plate 113 is connected to the two end plates 111 at both ends along the second direction Y, thereby dividing the cavity 115 into two sub-cavities 1151. The battery cell groups 121 are disposed in the two sub-cavities 1151 in a one-to-one correspondence.

[0048] It can be understood that by connecting the two ends of the connecting plate 113 along the second direction Y to the two end plates 111 respectively, and dividing the cavity 115 into two sub-cavities 1151 configured to accommodate the battery cell group 121, the connecting plate 113 can apply a pulling force to the middle part of the two end plates 111. When the multiple battery cells 1211 of the battery cell group 121 expand, causing the middle part of the end plate 111 to displace in the second direction Y, the connecting plate 113 can apply a pulling force to the middle part of the end plate 111 to limit the deformation of the middle part of the end plate 111, and further limit the displacement of the first poles 1212 of the two adjacent battery cells 1211 distributed along the first direction X along with the battery cell 1211 in the second direction Y, thereby further reducing the large shear force and torque on the first pole 1212 of the battery cell 1211 due to the displacement.

[0049] In some embodiments, as shown in Figures 1 and 4 , an adhesive layer 114 is provided on the side of the connecting plate 113 facing the sub-cavity 1151. The adhesive layer 114 is bonded to the side of the battery cell 1211. Thus, when the multiple battery cells 1211 of the battery cell group 121 expand, the connecting plate 113 can apply a pulling force to the battery cells 1211 through the adhesive layer to prevent the battery cells 1211 from moving, thereby reducing the displacement of the first poles 1212 of the battery cells 1211 in the second direction Y to a certain extent.

[0050] Specifically, adhesive layers 114 are provided on the sides of the connecting plate 113 facing the two sub-cavities 1151 , so that both sides of the connecting plate 113 are bonded to the sides of the multiple battery cells 1211 of the corresponding battery cell group 121 through the adhesive layers 114 .

[0051] In some embodiments, the connecting plate 113 can be welded to the end plate 111 to increase the connection stability between the end of the connecting plate 113 and the end plate 111, so that the connecting plate 113 can apply greater tension to the middle of the end plate 111, thereby further improving the effect of limiting the deformation of the middle of the end plate 111.

[0052] Specifically, as shown in Figures 1 and 4, the end plate 111 is provided with a through hole 1111, which passes through the end plate 111 along the second direction Y. The end of the connecting plate 113 along the second direction Y passes through the through hole 1111 and extends out from the side of the end plate 111 away from the cavity 115. As a result, the end plate 111 and the connecting plate 113 can be welded together from the side of the end plate 111 away from the cavity 115, which makes the operation more convenient. Of course, the connecting plate 113 and the end plate 111 can also be connected together by screw connection, clamping or other means, as long as the connecting plate 113 can apply tension to the end plate 111 to reduce the deformation of the middle part of the end plate 111.

[0053] An embodiment of the present application also provides a battery pack, which includes a battery module. The specific structure of the battery module refers to the above embodiment. Since this battery pack adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0054] The battery pack may include a shell and a battery module. The battery module may be the battery module in any of the above embodiments, and the battery module is arranged in the shell.

Claims

1. A battery module (100), comprising: Mounting frame (110); A cell assembly (120) comprising two cell groups (121) distributed in the mounting frame (110) along a first direction (X), the cell group (121) comprising a plurality of cell units (1210) distributed in sequence along a second direction (Y), the cell units (1210) comprising two cells (1211) distributed in sequence along the second direction (Y), the cells (1211) comprising a first pole (1212) and a second pole (1213) distributed along the first direction (X), the first poles (1212) of two adjacent cells (1211) distributed along the first direction (X) being close to each other, and the first direction (X) and the second direction (Y) forming an angle; A connecting assembly (130) comprises a plurality of first connecting members (131) and a plurality of second connecting members (132), wherein the first poles (1212) of two adjacent battery cells (1211) distributed along the first direction (X) are connected via the first connecting member (131), and the second poles (1213) of two battery cells (1211) of the battery cell unit (1210) are connected via the second connecting member (132).

2. The battery module (100) according to claim 1, wherein: The polarities of the first poles (1212) of two adjacent battery cells (1211) distributed along the first direction (X) are opposite; and the polarities of the second poles (1213) of the two battery cells (1211) of the battery cell unit (1210) are opposite.

3. The battery module (100) according to claim 2, wherein: One of the battery cell groups (121) further comprises two independent battery cells (1211), and the two independent battery cells (1211) are located on both sides of the plurality of battery cell units (1210) along the second direction (Y); or, The two battery cell groups (121) each further include an independent battery cell (1211), wherein the independent battery cell (1211) of one of the battery cell groups (121) is located on one side of the plurality of battery cell units (1210) along the second direction (Y), and the independent battery cell (1211) of the other battery cell group (121) is located on the other side of the plurality of battery cell units (1210) along the second direction (Y).

4. The battery module (100) according to claim 1, further comprising a collection circuit (140) extending along the second direction (Y), wherein the plurality of first connectors (131) and the plurality of second connectors (132) are electrically connected to the collection circuit (140), respectively.

5. The battery module (100) according to claim 4, wherein: The acquisition circuit (140) comprises two acquisition wire bundles (141) extending along the second direction (Y), the two acquisition wire bundles (141) being distributed on both sides of the first connecting member (131) along the first direction (X), and the acquisition wire bundles (141) being electrically connected to the second connecting member (132) and a portion of the first connecting member (131) located on both sides thereof along the first direction (X).

6. The battery module (100) according to claim 5, wherein: A portion of the first connecting members (131) among the plurality of first connecting members (131) is electrically connected to one of the collection harnesses (141), and another portion of the first connecting members (131) among the plurality of first connecting members (131) is electrically connected to another collection harness (141).

7. The battery module (100) according to claim 6, wherein: The first connecting members (131) arranged at intervals among the plurality of first connecting members (131) are electrically connected to one of the collection harnesses (141), and the other first connecting members (131) among the plurality of first connecting members (131) are electrically connected to another of the collection harnesses (141).

8. The battery module (100) according to claim 5, further comprising an insulating plate (150) covering the battery cell assembly (120), the connecting assembly (130) and the acquisition circuit (140) being arranged on a side of the insulating plate (150) facing away from the battery cell assembly (120), the insulating plate (150) being provided with a plurality of connecting holes (155), some of the connecting holes (155) being arranged for electrical connection between the first connecting member (131) and the first pole (1212), or some of the connecting holes (155) being arranged for electrical connection between the second connecting member (132) and the second pole (1213).

9. The battery module (100) according to claim 8, wherein: The connection hole (155) includes a first connection hole (153) and a second connection hole (154); a first installation groove (151) and a second installation groove (152) are provided on a side of the insulating plate (150) away from the battery cell assembly (120); the first connection hole (153) is provided at the bottom of the first installation groove (151); the first connector (131) is installed in the first installation groove (151) and passes through the first connection hole (153) to be electrically connected to the first pole (1212); the second installation groove (152) is provided at the bottom of the second installation groove (152); the second connector (132) is installed in the second installation groove (152) and passes through the second connection hole (154) to be electrically connected to the second pole (1213).

10. The battery module (100) according to any one of claims 1 to 9, wherein: The first connecting member (131) and the second connecting member (132) are arranged in a plate or sheet shape.

11. The battery module (100) according to any one of claims 1 to 9, wherein: The mounting frame (110) comprises two end plates (111) arranged opposite to each other along the second direction (Y), and two side plates (112) arranged opposite to each other along the first direction (X), with both ends of the end plates (111) being connected to the ends of the two side plates (112) in a one-to-one correspondence, and enclosing each other to form a cavity (115); The mounting frame (110) further comprises a connecting plate (113) extending along the second direction (Y), wherein the connecting plate (113) is connected to the two end plates (111) at both ends along the second direction (Y) to divide the cavity (115) into two sub-cavities (1151); the battery cell groups (121) are arranged in the two sub-cavities (1151) in a one-to-one correspondence.

12. The battery module (100) according to claim 11, wherein: An adhesive layer (114) is provided on the side of the connecting plate (113) facing the sub-cavity (1151), and the adhesive layer (114) is bonded to the side of the battery core (1211).

13. The battery module (100) according to claim 11, wherein: The connecting plate (113) is welded to the end plate (111).

14. The battery module (100) according to claim 13, wherein: The end plate (111) is provided with a through hole (1111), the through hole (1111) passes through the end plate (111) along the second direction (Y), and the end of the connecting plate (113) along the second direction (Y) passes through the through hole (1111) and extends out from a side of the end plate (111) facing away from the cavity (115).

15. A battery pack, comprising: shell; A battery module (100), wherein the battery module (100) is the battery module (100) according to any one of claims 1 to 14, and the battery module (100) is arranged in the housing.

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