Battery module

Abstract

The utility model provides a battery module. The battery module comprises a battery cell, the mounting films are arranged at the two ends of the battery cell; the conducting bar is arranged on the side, away from the battery cell, of the mounting film, the mounting film is provided with a through hole, and a terminal of the battery cell penetrates through the through hole to be electrically connected with the conducting bar; the shell, the battery cell, the mounting film and the conducting bar are arranged in the shell, and the shell extrudes the mounting film and the conducting bar, so that the mounting film and the conducting bar are in contact conduction with the battery cell. The electric component connecting assembly solves the problem that the cost is high when an electric component connecting assembly in the prior art adopts a plastic bracket as a bearing part.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery module. BACKGROUND

[0002] At present, when a large cylindrical module is used for a power battery, an electrical component connecting assembly (i.e., a CCS assembly, also known as an integrated busbar) often uses a combination of a plastic support and a circuit board (FPC, FFC, etc.) to set the circuit board, wires and other components on the plastic support. However, the above setting method has the following disadvantages: when a cylindrical power battery uses a plastic support as a bearing component, the cost of opening the injection mold is relatively high, the amount of injection molding material is large, which greatly increases the manufacturing cost of packaging, and the plastic support is relatively heavy, which affects the overall energy density, and the plastic support occupies a large space, which is difficult to meet the space layout requirements in some limited space conditions. CONTENT OF THE UTILITY MODEL

[0003] The main purpose of the present application is to provide a battery module to solve the problem of high cost when the electrical component connecting assembly in the prior art uses a plastic support as a bearing component.

[0004] In order to achieve the above purpose, according to one aspect of the present application, a battery module is provided, which includes a battery cell; a plurality of mounting films, each end of the battery cell is provided with a mounting film; a conductive busbar, the conductive busbar is arranged on the side of the mounting film away from the battery cell, the mounting film has a through hole, and the terminal of the battery cell passes through the through hole and is electrically connected with the conductive busbar; a shell, the battery cell, the mounting film and the conductive busbar are all arranged in the shell, and the shell extrudes the mounting film and the conductive busbar, so that the mounting film and the conductive busbar maintain contact with the battery cell.

[0005] Further, the mounting film has a fixing structure, and the battery module further includes a wire, which is laid on the surface of the mounting film and is limited at the fixing structure.

[0006] SPECIFICATION PN279482HZYWLN

[0007] Further, the mounting film has opposite first and second sides, the first side faces the battery cell, and the wire and the conductive busbar are both arranged on the second side.

[0008] Further, the surface of the conductive busbar facing the first side has a positioning recess, which is located at the through hole and can be positioned and matched with the end of the battery cell.

[0009] Further, the fixing structure includes a limiting hole and a limiting rib, the limiting hole is arranged on the surface of the mounting film, and the limiting rib is arranged in the limiting hole in a deformable manner, and the wire is arranged on both sides of the limiting rib and is crimped at the limiting hole by the limiting rib.

[0010] Further, the plurality of wires form a wire bundle, the wire bundle extends along the surface of the mounting film for a predetermined distance, and the limiting holes and the limiting ribs are arranged at the wire bundle.

[0011] Further, the fixing structure includes fixing holes and a fixing member, the fixing holes are a plurality of pairs arranged on the surface of the mounting film, and a wire area is formed between the fixing holes of each pair for the wires, and the fixing member is arranged between the fixing holes of each pair and fastens the wires in the wire area.

[0012] Further, the plurality of wires form a wire bundle, the wire bundle extends along the surface of the mounting film for a predetermined distance, and the fixing holes and the fixing member are arranged at the wire bundle.

[0013] Further, the conductive row includes a first connecting portion, an intermediate transition portion, and a second connecting portion connected in sequence, and the first connecting portion and the second connecting portion are respectively electrically connected with different battery cells.

[0014] Further, the first connecting portion and the second connecting portion are respectively electrically connected with two non-adjacent battery cells, and the intermediate transition portion avoids the connection end of the battery cell between the first connecting portion and the second connecting portion.

[0015] Further, the first connecting portion, the intermediate transition portion, and the second connecting portion are sequentially bent and connected to form a U-shaped structure, and the battery cell between the first connecting portion and the second connecting portion is located inside the U-shaped structure.

[0016] Description PN279482 HZYWLN

[0017] Further, the plurality of conductive rows have opposite opening directions of the U-shaped structures of adjacent two conductive rows, the first connecting portion of one of the conductive rows is located inside the U-shaped structure of the other conductive row, and the second connecting portion of the other conductive row is located inside the U-shaped structure of one of the conductive rows.

[0018] Further, the first connecting portion and the second connecting portion are respectively electrically connected with two adjacent battery cells, and the intermediate transition portion is located between the first connecting portion and the second connecting portion and forms a linear structure.

[0019] Further, the plurality of conductive rows have at least two conductive rows with lead-out ends, the lead-out ends extend out of the surface of the mounting film, and the lead-out ends have a connecting structure for external connection.

[0020] Further, the mounting film further has an embedding hole, and the battery module further includes a detection member arranged in the embedding hole.

[0021] Further, the embedding hole has a turned-up edge at the edge thereof, the turned-up edge is bent away from the battery cell, and the turned-up edge abuts and fixes the detection member when the detection member is embedded in the embedding hole.

[0022] Further, the plurality of conductive rows and wires are arranged on the mounting film, and the battery module further comprises a wire concentrator, and the wires on both sides of the mounting film extend out of the surface of the mounting film and are connected to the wire concentrator.

[0023] Further, along the arrangement direction of the battery cells, the positive electrodes of the adjacent two battery cells are located at two ends of the battery cells, the mounting film and the conductive row are provided in plurality, the mounting film is arranged at two ends of the battery cell, the conductive row comprises a leading conductive row, an intermediate conductive row and a terminal conductive row, the leading conductive row is electrically connected to the positive electrode and the negative electrode of the adjacent two battery cells, the terminal conductive row and the leading conductive row are arranged on the same mounting film, and the terminal conductive row and the leading conductive row are arranged at two ends of the mounting film, and the intermediate conductive row is arranged on the mounting film on the other side, and the intermediate conductive row is electrically connected to the positive electrode and the negative electrode of the spaced two battery cells.

[0024] By arranging the mounting film and the conductive row, the conductive row is arranged on the mounting film, so that the conductive row can not only contact and conduct between the battery cells to realize the connection and cooperation between the battery cells, but also can improve the bearing capacity of the mounting film, and the shell can clamp the mounting film and the conductive row in the shell on the battery cell, so that the conductive row can stably and reliably contact with the battery cell. In this way, the shell clamping realizes the contact and cooperation between the conductive row and the battery cell, and the CCS support and other plastic supports are omitted, so as to reduce the cost of injection molding and injection molding processing, greatly reduce the cost of the electrical connection assembly, and improve the energy density of the battery module, and meet the space arrangement requirements of the battery module. BRIEF DESCRIPTION OF DRAWINGS

[0025] The drawings constituting a part of the specification of the present application are used to provide further understanding of the present application, the illustrative embodiments of the present application and the description thereof are used to explain the present application, and do not constitute improper limitation on the present application. In the drawings:

[0026] Figure 1 The structure of the electrical connection assembly of the battery module of the present application is shown;

[0027] Figure 2 The exploded view of the battery module of Figure 1 is shown;

[0028] Figure 3 The structure of the electrical connection assembly of Figure 1 is shown from another perspective;

[0029] Figure 4 The enlarged view of A in Figure 3 is shown;

[0030] Figure 5An enlarged view of the middle B is shown. Figure 3 An enlarged view of the middle B is shown.

[0031] Figure 6 An enlarged view of the middle B is shown. Figure 3 An enlarged view of the middle B is shown.

[0032] Figure 7 An enlarged view of the middle B is shown.

[0033] Figure 8 An enlarged view of the middle B is shown. Figure 1 An enlarged view of the middle B is shown.

[0034] Figure 9 An enlarged view of the middle B is shown. An enlarged view of the middle B is shown.

[0035] Wherein, the above-mentioned drawings include the following reference signs:

[0036] Description PN279482 HZYWLN

[0037] 10, mounting film; 11, through hole; 12, limiting hole; 13, limiting rib; 14, fixing hole; 15, embedding hole; 16, flange; 20, wire; 30, conductive strip; 31, positioning recess; 32, first butt joint part; 33, middle transition part; 34, second butt joint part; 35, leading end; 36, connecting structure; 37, leading conductive strip; 38, middle conductive strip; 39, last conductive strip; 40, detection piece; 50, concentrator; 60, battery cell. DETAILED DESCRIPTION

[0038] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.

[0039] It should be noted that, unless otherwise specified, all technical and scientific terms used in the present application have the same meaning as that generally understood by those skilled in the art to which the present application belongs.

[0040] In the present application, unless otherwise specified, the orientation words such as "upper", "lower", "top", "bottom" are generally directed to the direction shown in the drawings, or are directed to the vertical, perpendicular or gravity direction of the components themselves; similarly, for the convenience of understanding and description, "inner" and "outer" refer to the inner and outer relative to the contour of the components themselves, but the above orientation words are not used to limit the present application.

[0041] In order to solve the problem of high cost when the plastic support is used as the bearing component in the prior art electric component connecting assembly, the present application provides a battery module.

[0042] As Figures 1 to 9The battery module shown includes a plurality of mounting films 10, a plurality of electrically conductive bars 30, and a housing. The two ends of the electric core 60 are provided with the mounting film 10. The electrically conductive bar 30 is arranged on the side of the mounting film 10 away from the electric core 60. The mounting film 10 has a through hole 11, and the terminal of the electric core 60 passes through the through hole 11 and is electrically connected with the electrically conductive bar 30. The electric core 60, the mounting film 10, and the electrically conductive bar 30 are arranged in the housing, and the housing extrudes the mounting film 10 and the electrically conductive bar 30, so that the mounting film 10 and the electrically conductive bar 30 maintain contact with the electric core 60.

[0043] Description PN279482 HZYWLN

[0044] The mounting film 10 and the electrically conductive bar 30 are arranged, the electrically conductive bar 30 is arranged on the mounting film 10, so that the electrically conductive bar 30 can play a role in contact and conduction between the electric core 60, realize the connection and cooperation between the electric core 60, and improve the bearing capacity of the mounting film 10. At the same time, the housing can clamp the mounting film 10 and the electrically conductive bar 30 in the housing on the electric core 60, so that the electrically conductive bar 30 can stably and reliably contact the electric core 60. In this way, the clamping of the housing realizes the contact and cooperation between the electrically conductive bar 30 and the electric core 60, and the CCS support and other plastic supports are omitted, thereby reducing the cost of injection molding and injection molding processing, greatly reducing the cost of the electric connection assembly, and being beneficial to improving the energy density of the battery module and meeting the space arrangement requirements inside the battery module.

[0045] Optionally, the electrically conductive bar 30 and the electric core 60 can be in contact and cooperation, and the reliability of the contact is ensured by the clamping of the housing. However, considering that the battery module will vibrate and other situations in actual use, the electrically conductive bar 30 and the electric core 60 are preferably welded together in this embodiment, so as to ensure the stable and reliable contact and conduction between the electrically conductive bar 30 and the electric core 60.

[0046] In the embodiment, the mounting film 10 has a fixed structure, and the battery module further comprises a wire 20 laid on the surface of the mounting film 10 and limited at the fixed structure. The mounting film 10, the wire 20, the conductive row 30, and the subsequent detection member 40, the concentrator 50 and other components of the embodiment collectively constitute an electrical connection assembly, and the electrical connection assembly is arranged in the shell as a whole. The shell extrudes the electrical connection assembly as a whole to ensure that the components of the electrical connection assembly can be stably matched. In the embodiment, the wire 20 is directly arranged on the mounting film 10 through the fixed structure, so that the electrical connection assembly does not need an additional plastic support to bear, and the improvement of the bearing capacity of the mounting film 10 by the conductive row 30 enables the mounting film 10 to realize the arrangement of the wire 20. In this way, the mounting film 10 and the wire 20 can be integrated together, and the electrical connection assembly can be processed and transported as a whole during processing, so as to be directly installed on the battery cell 60. The integrated material is directly installed, and because the plastic support is reduced, the space utilization is higher, the weight is smaller, the structure is more stable, the complex signal acquisition environment can be met, and the wiring is more flexible.

[0047] As shown in Figures 1 to 3 The mounting film 10 of the embodiment adopts a polycarbonate film, that is, a PC film, and the conductive row 30 adopts an aluminum row and is arranged as a planar plate. Since the wire 20 generally needs to be arranged in multiple rows, part of the wire 20 can be integrated together to form a wire harness, and subsequent extension is dispersed according to the components and positions to be connected. Of course, the specific types of the above components can be adjusted as needed and are not limited to the specific types described above in the embodiment.

[0048] In an embodiment not shown in the figure, the conductive row 30 is not almost completely attached to the second side of the mounting film 10, and the conductive row 30 is bent in the direction of approaching and moving away from the mounting film 10 in turn to form a wave-shaped, zigzag-shaped or other bending-shaped structure. In this structure, the conductive row 30 is not in contact with the mounting film 10, but only part of the conductive row 30 is in contact with the mounting film 10. In this case, by adjusting the contact position and contact area between the conductive row 30 and the mounting film 10, the conductive row 30 can still support the mounting film 10, so that the mounting film 10 with improved bearing capacity can still meet the requirements. At the same time, the conductive row 30 of the embodiment can also play a buffering role for the expansion of the battery cell 60. When the battery cell 60 expands, the expansion force can drive the conductive row 30 to deform, thereby absorbing the expansion force.

[0049] In the embodiment, the installation film 10 adopts a single-layer film structure. It should be noted that the single-layer film refers to one layer of the installation film 10, and the specific number of the installation film 10 can be increased as needed. The single-layer film structure is simpler, and the setting of the conductive row 30 can still ensure stable and reliable bearing effect. Of course, the installation film 10 can also be set in the form of a multi-layer film as needed.

[0050] Description PN279482 HZYWLN

[0051] In the embodiment, the installation film 10 has opposite first and second sides, that is, opposite two side surfaces of the installation film 10. Since the installation film 10 is arranged at the end of the battery cell 60, the first side faces the battery cell 60, and the second side faces away from the battery cell 60. The wire 20 and the conductive row 30 are arranged on the second side, so that the layout form of the battery cell 60, the installation film 10, the wire 20, and the conductive row 30 is formed as a whole. In this way, the installation film 10 can not only bear, but also separate the wire 20, the conductive row 30, and the battery cell 60. Moreover, the through hole 11 on the installation film 10 does not affect the contact and conduction of the conductive row 30 and the battery cell 60 support.

[0052] As shown in Figure 1 , Figure 6 and Figure 9 In the embodiment, since the plastic support is no longer arranged, the positioning and connection with the battery cannot be achieved through the plastic support. Moreover, considering that the hardness of the installation film 10 is low, effective assembly with the battery cell 60 cannot be achieved. Therefore, the embodiment has a positioning recess 31 on the surface of the conductive row 30 facing the first side. In this way, when the conductive row 30 is arranged on the surface of the installation film 10, the positioning recess 31 is located at the through hole 11, so that the conductive row 30 can be positioned and matched with the end of the battery cell 60 through the positioning recess 31. Then, the conductive row 30 and the battery cell 60 can be welded together through welding or other methods to achieve conduction connection. The above setting solves the assembly problem between the electrical connection assembly and the battery cell 60 when the single-layer installation film 10 is used. The positioning recess 31 can enable precise positioning between the conductive row 30 and the pole of the end of the battery cell 60, which is beneficial to subsequent welding.

[0053] This embodiment features two types of fixing structures. These two structures are chosen because the conductors 20 can be integrated into a bundle or dispersed as single or double strands. Specifically, there are multiple conductors 20, bundled together to form a bundle. During unified routing, the bundle extends a predetermined distance along the surface of the mounting film 10. However, since the conductors 20 need to connect to different components, their subsequent routes differ. In this case, the conductors 20 are no longer tightly attached but dispersed, extending to predetermined positions. This achieves both centralized routing of the conductors 20 and subsequent connections to different components. Therefore, based on the aforementioned configuration (PN279482HZYWLN), this embodiment provides different fixing structures for different states of the conductors 20.

[0054] like Figure 3 and Figure 4 As shown, the fixing structure of this embodiment includes a limiting hole 12 and a limiting rib 13. The limiting hole 12 is disposed on the surface of the mounting membrane 10, and the limiting rib 13 is deformably disposed within the limiting hole 12. In this embodiment, the limiting hole 12 is configured as a long strip with a certain length, and the shape of the limiting rib 13 is basically the same as that of the limiting hole 12. The two ends of the limiting rib 13 in the length direction are connected to the inner walls of the two ends of the limiting hole 12 in the length direction, while the other two sides of the limiting rib 13 parallel to the length direction are not connected to the inner walls of the limiting hole 12. Thus, the limiting rib 13... A fixing hole 14 in the shape of "11" is formed between the limiting hole 12 and the limiting rib 13. With the structural characteristics of the limiting rib 13 being deformable, a certain through-hole is formed between the limiting rib 13 and the limiting hole 12 on both sides parallel to the length direction. The wire 20 can be inserted into the through-hole of the limiting rib 13 on both sides parallel to the length direction, and is pressed against the limiting hole 12 under the action of the flexibility of the limiting rib 13, thereby realizing the installation and fixation of the wire 20, avoiding large displacement of the wire 20, and ensuring stability and reliability during use.

[0055] Considering that the size of the aforementioned limiting rib 13 is generally small, and the size of the through-hole formed by it is also small, this embodiment uses the aforementioned limiting rib 13 and limiting hole 12 to fix a single or double wire 20. That is, the limiting hole 12 and limiting rib 13 are set at the single or double wire 20, so that the single or double wire 20 passes through the through-hole between the limiting rib 13 and the limiting hole 12, thereby achieving the limiting and fixing of a small number of wires 20.

[0056] Further preferably, the embodiment provides the limiting rib 13 and the limiting hole 12 at the bending position of the single or double wire 20. The wire 20 usually needs to be bent for a certain length when wiring, so as to change the wiring to better connect with the components. The embodiment provides the fixing mode of the limiting rib 13 and the limiting hole 12 at the bending position, so that the bending part of the wire 20 which is most likely to be offset is fixed by the limiting rib 13, thereby improving the fixing effect between the limiting rib 13 and the limiting hole 12. Of course, the limiting rib 13 and the limiting hole 12 can also be provided at other positions of the wire 20.

[0057] As shown in Figure 7 In addition to the structure of the limiting rib 13 and the limiting hole 12, the fixing structure of the embodiment also includes the fixing hole 14 and the fixing member. The fixing hole 14 penetrates the first side and the second side of the mounting film 10, the fixing hole 14 is a plurality of fixing holes, and the fixing hole 14 is arranged in pairs on the surface of the mounting film 10. The fixing hole 14 forms a wiring area for wiring between the fixing hole 14 arranged in pairs. The fixing member can be a cable tie or the like. When fixing, the wire 20 is placed in the wiring area, and then the fixing member is arranged in the fixing hole 14 arranged in pairs on both sides of the wire bundle. The fixing member is tightened to tightly fix the wire 20 in the wiring area. The size of the wiring area is determined by the arrangement distance between the fixing hole 14, so the size of the wiring area can be large, and the number of wires 20 that can pass through the wiring area is large. Therefore, the fixing hole 14 and the fixing member can be applied to the wire bundle in which the wires 20 are concentrated in a bundle. The fixing hole 14 and the fixing member are arranged at the wire bundle, and the wire bundle composed of a large number of wires 20 is placed in the wiring area as a whole, and then the fixing member is fixed.

[0058] The fixing structure of the above two structure forms can provide different fixing modes according to different states of the wire 20, so that various forms of the wire 20 can be effectively fixed, and the reliability of the integrated integration between the mounting film 10 and the wire 20 is ensured. Compared with the fixing mode using adhesive, the fixing mode of the embodiment can reduce the use of adhesive, thereby reducing the process flow and saving cost.

[0059] It should be noted that the two types of fixing structures described above can be substituted for each other. For example, the fixing hole 14 and the fixing member can also be used to fix single or double wires 20, and the structure of the limiting rib 13 and the limiting hole 12 can also be used to limit and fix the wire harness if it meets the fixing requirements. Furthermore, only one of the two types of fixing structures can be used, allowing for the simultaneous fixing of single, double, and large quantities of wires 20. Of course, the specific structural form of the fixing structure is not limited to the two types described in this embodiment; other structural forms can also be used.

[0060] Based on different configurations of the battery cells 60, the specific structure of the conductive busbar 30 can be adjusted accordingly, thereby enabling connectivity between the battery cells 60 and between the battery cells 60 and external circuits. For example... Figure 2 As shown, this embodiment takes four battery cells 60 as an example. The axes of the four battery cells 60 are arranged in parallel and spaced apart, so that the four battery cells 60 are arranged in a radial sequence. Among the four battery cells 60, the positive and negative poles of the two middle battery cells 60 are arranged in the same direction, the positive and negative poles of the two outermost battery cells 60 are arranged in the same direction, and the positive and negative poles of the two middle battery cells 60 are arranged in opposite directions to the positive and negative poles of the two outermost battery cells 60. The battery cells 60 are connected in series. Based on the above arrangement of the battery cell 60, this embodiment provides two mounting films 10 and five conductive bars 30. Mounting films 10 are provided at both ends of the battery cell 60. Among the five conductive bars 30, two conductive bars 30 are lead-out conductive bars 37, two conductive bars 30 are intermediate conductive bars 38, and the remaining conductive bar 30 is the last conductive bar 39. The lead-out conductive bars 37 are the components for connecting the battery cell 60 to the outside. The intermediate conductive bars 38 and the last conductive bar 39 are the components for connecting and conducting between the battery cells 60, thereby realizing that the four battery cells 60 are connected in series.

[0061] In this embodiment, both the intermediate conductive bus 38 and the last conductive bus 39 include a first mating portion 32, an intermediate transition portion 33, and a second mating portion 34 connected sequentially. The first mating portion 32 and the second mating portion 34 both serve to contact and engage with the battery cell 60. The contacts on the conductive bus 30 are located on the surfaces of the first mating portion 32 and the second mating portion 34 facing the battery cell 60, and the first mating portion 32 and the second mating portion 34 are electrically connected to different battery cells 60. The intermediate transition portion 33 connects the first mating portion 32 and the second mating portion 34 together, thereby connecting two battery cells 60 in series via the intermediate conductive bus 38 or the last conductive bus 39.

[0062] The intermediate conductive row 38 and the terminal conductive row 39 of the embodiment each include the first connecting portion 32, the intermediate transition portion 33 and the second connecting portion 34, but since the intermediate conductive row 38 is used to connect the battery cells 60 at the intermediate interval position together, and the terminal conductive row 39 is used to connect the two battery cells 60 at the edge together, the specific structural forms of the two are not the same.

[0063] As shown in Figure 2 and Figure 8 for the intermediate conductive row 38, the first connecting portion 32 and the second connecting portion 34 are respectively electrically connected with the two battery cells 60 which are not adjacent, and the intermediate transition portion 33 avoids the connecting end of the battery cell 60 between the first connecting portion 32 and the second connecting portion 34, so that the first connecting portion 32 and the second connecting portion 34 can be connected with the positive and negative electrodes of different battery cells 60, and the intermediate battery cell 60 can be avoided to be electrically connected with other conductive rows 30.

[0064] Since the intermediate conductive row 38 is attached to the surface of the mounting film 10, the embodiment adopts the first connecting portion 32, the intermediate transition portion 33 and the second connecting portion 34 to be sequentially bent and connected to form a U-shaped structure, and the connecting end of the battery cell 60 which needs to be avoided in the middle, i.e. the intermediate battery cell 60, is located inside the U-shaped structure, so as to realize the avoidance of the intermediate battery cell 60.

[0065] Based on the above-mentioned arrangement mode of the four battery cells 60, the two intermediate conductive rows 38 of the embodiment are arranged on the mounting film 10 at the same side of the battery cells 60, that is, the two intermediate conductive rows 38 are arranged on the same mounting film 10, and the opening directions of the U-shaped structures of the two intermediate conductive rows 38 are opposite, so that the first connecting portion 32 of one of the conductive rows 30 is located inside the U-shaped structure of the other conductive row 30, and the second connecting portion 34 of the other conductive row 30 is located inside the U-shaped structure of one of the conductive rows 30, so as to form a cooperation form that the two U-shaped structures are plugged together, so as to ensure that the two intermediate conductive rows 38 can be respectively in contact with the two battery cells 60 at the interval, and to reduce the space occupied by the two intermediate conductive rows 38, so that the size of the mounting film 10 can be adapted to the end surface of the battery cell 60, and does not have to be too large, which is beneficial to reduce the overall size of the battery module.

[0066]

[0067] As shown in Figure 2 and Figure 3 ​As shown, the structure of the last conductive row 39 is slightly different from that of the intermediate conductive row 38. Since the last conductive row 39 is arranged between the two outermost adjacent battery cells 60, the first and second connecting portions 32 and 34 of the last conductive row 39 are respectively electrically connected with the two adjacent battery cells 60. Since the intermediate transition section does not need to be avoided, the intermediate transition section 33 can be directly arranged at the position between the first and second connecting portions 32 and 34, so that the last conductive row 39 has a linear structure as a whole, and the structure of the last conductive row 39 is simpler.

[0068] As shown in Figure 2 and Figure 3 As shown, the structure of the last conductive row 39 is slightly different from that of the intermediate conductive row 38. Since the last conductive row 39 is arranged between the two outermost adjacent battery cells 60, the first and second connecting portions 32 and 34 of the last conductive row 39 are respectively electrically connected with the two adjacent battery cells 60. Since the intermediate transition section does not need to be avoided, the intermediate transition section 33 can be directly arranged at the position between the first and second connecting portions 32 and 34, so that the last conductive row 39 has a linear structure as a whole, and the structure of the last conductive row 39 is simpler.

[0069] The arrangement of the three conductive rows 30 is as follows. Two installation films 10 are arranged, one at each end of the battery cells 60. Two intermediate conductive rows 38 are arranged on one of the installation films 10. The U-shaped structures of the two intermediate conductive rows 38 are inserted together. The first and second connecting portions 32 and 34 of the intermediate conductive rows 38 are respectively in contact with the two spaced battery cells 60, and the two intermediate conductive rows 38 are respectively in contact with two groups of different battery cells 60. The last conductive row 39 and the lead-out conductive row 37 are arranged on the other installation film 10. The last conductive row 39 is in contact with the two adjacent battery cells 60 at one outer side, and the two lead-out conductive rows 37 are respectively in electrical connection with the two adjacent battery cells 60 at the other outer side. Thus, the positive and negative electrodes of the four battery cells 60 are sequentially connected in series to form a series arrangement.

[0070] It should be noted that the number of installation films 10 and the arrangement of the battery cells 60 can be adjusted as needed. The specific arrangement of the conductive rows 30 and the specific arrangement of the battery cells 60 can also be adjusted accordingly, as long as the battery cells 60 can form a loop to supply power externally as required.

[0071] The mounting film 10 of the embodiment is cut to a size suitable for the whole of the plurality of battery cells 60, and at the same time, a plurality of through holes 11 matched with the conductive strips 30 are cut, so that the conductive strips 30 can be welded with the poles of the battery cells 60 through the mounting film 10, and then the mounting film 10 is used to fix the conductive strips 30 by means of double-sided adhesive tape, so as to satisfy the mutual position and size of the conductive strips 30.

[0072] As shown in Figure 2 , Figure 3 and Figure 5 , in the embodiment, the electrical connection assembly further comprises a detection member 40, which can be a temperature sensor or other sensor component capable of detecting the state of the battery, and the detection member 40 is also arranged on the mounting film 10, so as to realize the integrated structure of the detection member 40, the conductive strips 30 and the wires 20. In order to realize the installation of the detection member 40 on the mounting film 10, the mounting film 10 of the embodiment further has an embedded hole 15 which penetrates the mounting film 10, and the embedded hole 15 provides space for the installation of the detection member 40, so that the detection member 40 can be arranged in the embedded hole 15 and in contact with the battery cell 60 and electrically connected with the wire 20, thereby realizing the installation of the detection member 40 and the connection between the wire 20 and the battery cell 60. This is conducive to improving the space utilization and positioning and installing the detection member 40 in a limited space.

[0073] As shown in Figure 5 , in order to ensure the reliability of the installation of the detection member 40, the embodiment has a flange 16 at the edge of the embedded hole 15, and the flange 16 of the embodiment is preferably bent away from the battery cell 60, so that the flexibility of the flange 16 can abut and fix the detection member 40 when the detection member 40 is embedded in the embedded hole 15, thereby ensuring the reliability of the fixation of the detection member 40 on the mounting film 10. The embedded hole 15 can be directly cut on the mounting film 10 at the corresponding position of the mounting film 10 to a certain distance, and the cut part is folded outward to form the embedded hole 15 and the flange 16, and then the detection member 40 is installed in the embedded hole 15 and connected with the wire 20. The mounting film 10 is cut into a H-shaped cut when cutting, so that the embedded hole 15 is H-shaped, and the flange 16 is formed around the embedded hole 15, thereby ensuring the fixation of the detection member 40. In addition to the fixation of the flange 16, structural adhesive can also be added at the detection member 40 as needed, thereby further improving the reliability of the installation.

[0074] As shown in Figure 2As shown, in the embodiment, the electric connection assembly further comprises a hub 50, since the two lead-out conductive strips 37 are in contact with the two electric cores 60 adjacent to one side of the electric cores 60, the two lead-out conductive strips 37 can be led out from the same side of the electric cores 60, facilitating connection, the hub 50 is also arranged at the side, the wires 20 are integrated into a bundle after being bundled, and the bundle is uniformly extended to the surface of the film 10 and extends to the hub 50, and is connected with the hub 50, so that the connection between the bundle and other components can be facilitated. The hub 50 can be provided with a hub terminal or the like according to needs.

[0075] The electric cores 60 are provided in plurality, and the electric cores 60 are arranged in sequence; the electric connection assembly is arranged at both ends of the electric cores 60 and is electrically connected with the connecting ends of the end portions of the electric cores 60.

[0076] It should be noted that the plurality in the above embodiment means at least two.

[0077] From the above description, it can be seen that the above-mentioned embodiments of the present application achieve the following technical effects:

[0078] 1. The problem of high cost of the electric member connection assembly using a plastic support as a bearing component in the prior art is solved;

[0079] Description PN279482 HZYWLN

[0080] 2. The plastic support does not need to be arranged, thereby reducing the cost of mold opening and injection molding, and greatly reducing the cost of the electric connection assembly;

[0081] 3. The installation film and the wire can be integrated together, and the electric connection assembly can be integrally processed and transported during processing, thereby being directly installed on the electric core to realize integrated incoming materials;

[0082] 3. The space utilization rate is higher, the weight is smaller, the structure is more stable, the complex signal acquisition environment can be met, and the wiring is more flexible;

[0083] 4. The space utilization rate is improved, and the detection piece is positioned and installed in the case of limited space;

[0084] 5. The assembly problem between the electric connection assembly and the electric core when a single-layer installation film is used is solved, and the conductive strip and the pole of the end portion of the electric core can be precisely positioned by means of the positioning recess, which is beneficial to subsequent welding;

[0085] 6. The weight of the electric connection assembly is greatly reduced, and the space occupied by the electric connection assembly is reduced.

[0086] Obviously, the above-described embodiments are merely some embodiments but not all embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort should belong to the protection scope of the present application.

[0087] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments consistent with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0088] It is to be noted that the terms "first", "second", and the like in the description and in the claims of the present application are used for distinguishing between similar objects and not necessarily for describing a sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the present application described herein are capable of

[0089] The preferred embodiments of the present application have been described above with the specific embodiments. The present application is not limited to the above embodiments. It will be appreciated by those skilled in the art that any modification, equivalent replacement and improvement made without departing from the spirit and principle of the present application shall fall within the scope of the present application.

Claims

1. A battery module, characterized by, The battery module comprises: a plurality of mounting films (10) arranged on both ends of the electric core (60); a plurality of conductive rows (30) arranged on the side of the mounting film (10) away from the electric core (60), the mounting film (10) having a through hole (11) through which the terminal of the electric core (60) is electrically connected with the conductive row (30); an outer shell in which the electric core (60), the mounting film (10) and the conductive row (30) are arranged, and the outer shell extruding the mounting film (10) and the conductive row (30) to make the mounting film (10) and the conductive row (30) keep in contact with the electric core (60). The mounting film (10) has a fixing structure, and the battery module further comprises a plurality of wires (20) laid on the surface of the mounting film (10) and limited at the fixing structure.

2. The battery module of claim 1, wherein, The mounting film (10) has opposite first and second sides, the first side facing the electric core (60), and the wires (20) and the conductive row (30) are arranged on the second side.

3. The battery module of claim 2, wherein, The surface of the conductive row (30) facing the first side has a positioning recess (31) located at the through hole (11) and capable of being positioned and matched with the end of the electric core (60).

4. The battery module of claim 3, wherein, The fixing structure comprises a limiting hole (12) arranged on the surface of the mounting film (10) and a limiting rib (13) arranged in the limiting hole (12) in a deformable manner, and the wires (20) are arranged on both sides of the limiting rib (13) and are crimped at the limiting hole (12) by the limiting rib (13).

5. The battery module of claim 2, wherein, The wires (20) are a plurality of wires (20) forming a wire harness, the wire harness extending a predetermined distance along the surface of the mounting film (10), and the limiting hole (12) and the limiting rib (13) are arranged at a single wire (20) or a double wire (20).

6. The battery module of claim 5, wherein, The fixing structure comprises a plurality of fixing holes (14) arranged in pairs on the surface of the mounting film (10) and a fixing member arranged between the fixing holes (14) and fastening the wires (20) in the wiring area.

7. The battery module of claim 2, wherein, The wires (20) are a plurality of wires (20) forming a wire harness, the wire harness extending a predetermined distance along the surface of the mounting film (10), and the fixing hole (14) and the fixing member are arranged at the wire harness.

8. The battery module of claim 7, wherein, The conductive row (30) comprises a first connecting portion (32), an intermediate transition portion (33) and a second connecting portion (34) connected in sequence, and the first connecting portion (32) and the second connecting portion (34) are electrically connected with different electric cores (60), respectively.

9. The battery module of any one of claims 1 to 8, wherein, ​ 10. The battery module of claim 9, wherein, The first connecting part (32) and the second connecting part (34) are respectively electrically connected with two non-adjacent battery cells (60), and the intermediate transition part (33) avoids the connection end of the battery cell (60) between the first connecting part (32) and the second connecting part (34).

11. The battery module of claim 10, wherein, The first connecting part (32), the intermediate transition part (33) and the second connecting part (34) are sequentially and flexibly connected to form a U-shaped structure, and the battery cell (60) between the first connecting part (32) and the second connecting part (34) is located inside the U-shaped structure.

12. The battery module of claim 11, wherein, The conductive row (30) is a plurality of, the opening direction of the U-shaped structure of adjacent two conductive rows (30) is opposite, one of the first connecting part (32) of the conductive row (30) is located in the U-shaped structure of the other conductive row (30), and the second connecting part (34) of the other conductive row (30) is located in the U-shaped structure of one conductive row (30).

13. The battery module of claim 9, wherein, The first connecting part (32) and the second connecting part (34) are respectively electrically connected with two non-adjacent battery cells (60), and the intermediate transition part (33) avoids the connection end of the battery cell (60) between the first connecting part (32) and the second connecting part (34).

14. The battery module of any one of claims 1-8, wherein, The conductive row (30) is a plurality of, at least two of the conductive rows (30) have a lead-out end (35), the lead-out end (35) extends out of the surface of the mounting film (10), and has a connecting structure (36) for external connection.

15. The battery module of any one of claims 1-8, wherein, The mounting film (10) further has an embedding hole (15), and the battery module further comprises a detection piece (40), which is arranged in the embedding hole (15).

16. The battery module of claim 15, wherein, The edge of the embedding hole (15) has a turn-up (16), which is bent away from the battery cell (60), and the turn-up (16) abuts and fixes the detection piece (40) when the detection piece (40) is embedded in the embedding hole (15).

17. The battery module of any one of claims 2-8, wherein, The conductive row (30) and the wire (20) are a plurality of, the mounting film (10) on both ends of the battery cell (60) is provided with the conductive row (30) and the wire (20), and the battery module further comprises a concentrator (50), and the wires (20) on both sides extend out of the surface of the mounting film (10) and are connected with the concentrator (50).

18. The battery module of any one of claims 1-7, wherein, Along the arrangement direction of the electric core (60), the positive poles of two adjacent electric cores (60) are respectively located at two ends of the electric core (60), the mounting film (10) and the conductive row (30) are multiple, the two ends of the electric core (60) are provided with the mounting film (10), the conductive row (30) comprises an outgoing conductive row (37), an intermediate conductive row (38) and a last conductive row (39), the outgoing conductive row (37) is at least two and respectively electrically connected with the positive pole and the negative pole of two adjacent electric cores (60), the last conductive row (39) and the outgoing conductive row (37) are located on the same mounting film (10), and the last conductive row (39) and the outgoing conductive row (37) are respectively located at two ends of the mounting film (10), the intermediate conductive row (38) is located on the mounting film (10) on the other side, and the intermediate conductive row (38) is electrically connected with the positive pole and the negative pole of two spaced electric cores (60).

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