Battery cell connection assembly, battery pack, and vehicle

Abstract

This disclosure relates to a cell connection assembly, a battery pack, and a vehicle. The cell connection assembly includes a first support structure, a second support structure, and multiple busbars. The first and second support structures are mated and connected. A busbar is disposed between the first and second support structures and is used to electrically connect two cells arranged adjacent to each other in a first direction. At least one of the first and second support structures is provided with at least one isolator. The isolator is disposed between two busbars arranged adjacent to each other in a second direction and is capable of insulating the two busbars. The first and second directions intersect. The isolator is disposed between two busbars adjacent to each other in the second direction and is capable of insulating the two adjacent busbars. The distance between adjacent busbars can be minimized to the greatest extent possible without considering their electrical clearance requirements, thereby increasing the arrangement space of the busbars and increasing the current-carrying area of ​​the busbars.

Description

Technical Field

[0001] This disclosure relates to the field of battery pack technology, and more specifically, to a cell connection assembly, a battery pack, and a vehicle. Background Technology

[0002] In power batteries, CCS (Cell Connect System) is generally used for high-voltage connection of cells and sampling of cell voltage and temperature.

[0003] In related technologies, the busbar integration method in the cell connection system is simple. In order to perform insulation protection, the gap between adjacent busbars is often set to be large. On the one hand, this compresses the usable space of the busbar and reduces the current flow area of ​​the busbar. On the other hand, it leads to a larger battery connection system volume, reduces the space utilization rate of the whole pack, and increases costs. Utility Model Content

[0004] To overcome the problems existing in the related technologies, this disclosure provides a cell connection assembly, a battery pack, and a vehicle.

[0005] According to a first aspect of the present disclosure, a battery cell connection assembly is provided, the battery cell connection assembly including a first support structure, a second support structure, and a plurality of busbars;

[0006] The first support structure and the second support structure are connected together, and the busbar is disposed between the first support structure and the second support structure and is used to electrically connect two battery cells arranged adjacent to each other in the first direction;

[0007] At least one of the first and second load-bearing structures is provided with at least one isolating member, which is disposed between two busbars arranged adjacent to each other in the second direction and is capable of insulating the two busbars; wherein the first direction and the second direction are intersecting.

[0008] Specifically, by connecting the first and second load-bearing structures together, and placing the busbar between them, the first and second load-bearing structures can effectively protect the busbar. Secondly, by providing an isolator on the first and / or second load-bearing structures, and placing the isolator between two adjacent busbars in the second direction, effectively insulating and isolating the two adjacent busbars, it is not necessary to set the gap between adjacent busbars too large. The distance between adjacent busbars can be minimized without considering electrical clearance requirements, thereby increasing the busbar arrangement space and the current-carrying area. Furthermore, by reducing the gap between two adjacent busbars, the battery pack volume can be reduced, improving space utilization and lowering costs.

[0009] In some embodiments, the first support structure is provided with at least one first isolation member, which is disposed between two busbars arranged adjacent to each other in a second direction and is capable of insulating and isolating the two.

[0010] The first isolation member includes a first isolation plate, which is connected to the first load-bearing structure and extends toward the second load-bearing structure in a third direction to abut against the second load-bearing structure; wherein the first direction, the second direction, and the third direction are arranged to intersect each other.

[0011] Specifically, by extending the first isolation plate upwards in the third direction and abutting against the second load-bearing structure, effective insulation isolation can be achieved between two adjacent busbars in the second direction, reducing the risk of electrical short circuits between the busbars and enhancing electrical safety. Secondly, by having the first isolation plate abut against the second load-bearing structure, the stability between the first and second load-bearing structures can be effectively improved, and the compactness of the structural design can also be enhanced, increasing space utilization.

[0012] In some embodiments, the first isolation member further includes a second isolation plate;

[0013] The second isolation plate is connected to the first support structure and extends toward the second support structure in the third direction to abut against the second support structure; wherein the second isolation plate and the first isolation plate are opposite to each other in the second direction and are spaced apart.

[0014] By adding the aforementioned second isolation plate, double insulation protection can be provided, further enhancing the insulation effect. Secondly, it can also further improve the stability between the first and second load-bearing structures, further improve the compactness of the structural design, and increase the utilization rate of space.

[0015] In some embodiments, the first support structure has at least one first opening located between two busbars arranged adjacent to each other in a second direction, and the first opening is corresponding to the first isolator.

[0016] The first opening includes two first opening edges disposed opposite each other in a second direction, and the first isolation plate and the second isolation plate are respectively connected to the two first opening edges.

[0017] Specifically, by forming a first opening in the first supporting structure, the first and second separator plates can be integrally formed onto the first supporting structure without the need for additional components for installation. For example, the first and second separator plates can be integrally formed at the first opening by stamping and bending. Secondly, through the first opening, when the aforementioned cell connection assembly is applied to a battery pack requiring potting, the potting compound can enter the gap between the first and second supporting structures through the first opening, thereby significantly improving the potting filling effect and uniformity.

[0018] In some embodiments, the first opening further includes two second opening edges disposed opposite to each other in a first direction;

[0019] One end of the second opening edge is connected to the end of one of the first opening edges, and the other end of the second opening edge is connected to the end of the other first opening edge;

[0020] The second opening edge is smoothly connected to the first opening edge.

[0021] By smoothly connecting the edge of the second opening to the edge of the first opening, the likelihood of the first opening tearing due to stress concentration can be reduced.

[0022] In some embodiments, the second opening edge includes a middle edge segment and two connecting edge segments, the two connecting edge segments being connected to both ends of the middle edge segment, and the end of the connecting edge segment away from the middle edge segment being connected to the end of the corresponding first opening edge; wherein the two connecting edge segments are arranged opposite to each other in a second direction, and the connecting edge segments are smoothly connected to the first opening edge.

[0023] The two connecting edge segments are arranged opposite each other in the second direction, providing bidirectional support and reducing deformation or damage caused by external vibration or impact. Furthermore, the connecting edge segments smoothly connect to the edge of the first opening, creating a smooth transition between the edge of the second opening and the edge of the first opening. Compared to right-angle or acute-angle corners, this design effectively reduces stress concentration and improves the overall rigidity and fatigue resistance of the first load-bearing structure.

[0024] In some embodiments, the connecting edge segment includes a first connecting segment and a second connecting segment, one end of the first connecting segment is connected to the intermediate edge segment, the other end of the first connecting segment is connected to the second connecting segment, and the end of the second connecting segment away from the first connecting segment is connected to the end of the first opening edge;

[0025] At least the second connecting segment is constructed with an arc-shaped edge.

[0026] The method of constructing at least the second connecting segment with an arc-shaped edge includes two approaches: one is to construct only the second connecting segment with an arc-shaped edge, and the other is to construct both the first and second connecting segments with arc-shaped edges. This arc-shaped edge design allows the structure to transition from a rigid to a flexible structure, effectively dispersing stress distribution and reducing the likelihood of tearing due to stress concentration.

[0027] In some embodiments, the dimension of the first isolation plate and / or the second isolation plate extending in the third direction is not less than the dimension of the busbar extending in the third direction.

[0028] The dimensions of the first and / or second isolation plates are designed to ensure complete coverage of the busbars in a third-party direction, providing comprehensive electrical isolation, which can effectively reduce the risk of short circuits between adjacent busbars.

[0029] In some embodiments, the dimension of the first isolation plate and / or the second isolation plate extending in the first direction is not less than the dimension of the busbar extending in the first direction.

[0030] The first and / or second isolation plates completely cover the busbar in the first direction, ensuring electrical isolation between adjacent busbars and effectively reducing the risk of short circuits between adjacent busbars. For example, the dimension of the first and / or second isolation plates extending in the first direction may be larger than the dimension of the busbar extending in the first direction; this disclosure does not limit this.

[0031] In some embodiments, the first isolation plate abuts against one of two adjacent busbars in a second direction; the second isolation plate abuts against the other of two adjacent busbars in a second direction.

[0032] When a first isolator is arranged on both sides of one of the busbars along the second direction, one side of the busbar along the second direction abuts against the first isolation plate of one of the first isolators in the second direction, and the other side of the busbar along the second direction abuts against the second isolation plate of the other first isolator in the second direction, thereby enabling effective limiting, covering and insulating protection of the busbar.

[0033] In some embodiments, the cell connection assembly further includes at least one flexible electrical connector;

[0034] The flexible electrical connector is disposed between the first bearing structure and the second bearing structure, and the flexible electrical connector can be electrically connected to two busbars arranged adjacent to each other in the second direction.

[0035] Specifically, by placing the flexible electrical connector between the first and second load-bearing structures, the first and second load-bearing structures can effectively protect the flexible electrical connector. Furthermore, the flexible electrical connector can be electrically connected to two busbars arranged adjacent to each other in the second direction, thus achieving electrical connection with the two adjacent busbars.

[0036] In some embodiments, the flexible electrical connector includes a flexible body and at least one sampling group;

[0037] The sampling group includes a first sampling section and a second sampling section, which are electrically connected to both sides of the flexible body in a second direction, respectively.

[0038] The flexible component body extends along a first direction and is at least partially disposed opposite to the first opening in a third direction;

[0039] The first isolation plate has a first notch, and the first sampling part passes through the first notch to be electrically connected to one of the two busbars arranged adjacent to each other in a second direction;

[0040] The second isolation plate has a second notch, through which the second sampling section passes to be electrically connected to the other of the two busbars arranged adjacent to each other in the second direction.

[0041] In this sampling group, the first and second sampling units are respectively located on both sides of the flexible component body along the second direction. Each of the first and second sampling units can be electrically connected to two adjacent busbars. Since the busbars are electrically connected to the battery cell, the first and second sampling units can collect information such as temperature and voltage data from the battery cell. Furthermore, a first notch is formed on the first isolation plate to allow the first sampling unit to pass, facilitating its information collection. Similarly, a second notch is formed on the second isolation plate to allow the second sampling unit to pass, facilitating its information collection.

[0042] In some embodiments, the first sampling portion and the second sampling portion are disposed opposite to each other in a second direction, and the first notch and the second notch are disposed opposite to each other in a second direction.

[0043] The symmetrical arrangement described above avoids concentrating and intersecting on the same side, reducing wiring conflicts and improving assembly efficiency and consistency.

[0044] In some embodiments, the flexible element body is spaced apart from the first isolation plate and / or the second isolation plate in a second direction.

[0045] In this configuration, by setting intervals in the second direction, a certain distance is maintained between the flexible component body and the first and second isolation plates, preventing the flexible component body from completely blocking the first opening and ensuring that the adhesive can be smoothly injected into the space between the first and second load-bearing structures through the first opening.

[0046] In some embodiments, the second support structure is provided with at least one second isolator, which is disposed between two busbars arranged adjacent to each other in a second direction and is capable of insulating and isolating the two.

[0047] The second isolation member includes a third isolation plate, which is connected to the second load-bearing structure and extends toward the first load-bearing structure in a third direction to abut against the first load-bearing structure;

[0048] The third isolation plate is opposite to and abuts against the first isolation plate in the second direction.

[0049] Specifically, by setting a second isolation member on the second load-bearing structure, and the second isolation member including a third isolation plate, and by having the third isolation plate opposite to and abutting the first isolation plate in the second direction, the insulation isolation between two adjacent busbars can be further enhanced; in addition, the strength between the first load-bearing structure and the second load-bearing structure can also be effectively improved, and the vibration resistance and deformation resistance of the cell connection assembly can be enhanced.

[0050] In some embodiments, the first isolation member further includes a second isolation plate; the second isolation plate is connected to the first support structure and extends toward the second support structure in a third direction to abut against the second support structure;

[0051] The second isolation member further includes a fourth isolation plate, which is connected to the second support structure and extends toward the first support structure in a third direction to abut against the first support structure;

[0052] The fourth isolation plate is positioned opposite to and spaced apart from the third isolation plate in the second direction, and the fourth isolation plate is positioned opposite to and abuts against the second isolation plate in the second direction.

[0053] Specifically, for the first isolation member on the first load-bearing structure and the second isolation member on the second load-bearing structure, the first isolation plate of the first isolation member and the third isolation plate of the second isolation member abut in the second direction, and the second isolation plate of the first isolation member and the fourth isolation plate of the second isolation member abut in the second direction. In addition to serving as insulation and providing support, they also serve as positioning members for the first load-bearing structure and the second load-bearing structure.

[0054] In some embodiments, the first support structure has at least one first opening located between two busbars arranged adjacent to each other in a second direction, and the first opening is corresponding to the first isolator.

[0055] The second load-bearing structure has at least one second opening, and the first opening is arranged corresponding to the second opening and is positioned opposite to it in a third direction.

[0056] Specifically, by forming a second opening in the second support structure, the design of this second opening allows the third and fourth separator plates to be integrally formed onto the second support structure without the need for additional components for their installation. Secondly, through this second opening, when the aforementioned cell connection assembly is applied to a battery pack requiring potting, the potting compound can enter the gap between the second support structure and the cell through this second opening, thereby significantly improving the potting filling effect and enhancing the uniformity of the potting filling.

[0057] In some embodiments, the projection of the first opening in a third direction is a first projection, and the projection of the second opening in a third direction is a second projection; the area of ​​the first projection is smaller than the area of ​​the second projection, and the first projection is within the second projection;

[0058] Wherein, the outer side of the first isolation plate is opposite to and abuts against the inner side of the third isolation plate, and the outer side of the second isolation plate is opposite to and abuts against the inner side of the fourth isolation plate.

[0059] The opening area of ​​the first opening is smaller than that of the second opening, and the outer surfaces of the two partition plates of the first partition abut against the inner surfaces of the two partition plates of the second partition. That is, the first partition is inserted into the second partition, thereby defining a space to accommodate the busbar. This space provides comprehensive enclosure and insulation protection for the busbar. Furthermore, the second partition can limit the first partition in a second direction; that is, by limiting the first and second partitions in the second direction, the first and second load-bearing structures are also limited in the second direction.

[0060] In some embodiments, the first support structure is formed with a plurality of first welding hole groups, the first welding hole groups being corresponding to and opposite to the busbar;

[0061] The first welding hole group includes two first welding holes, one of which is configured to be opposite to the terminal of one of two cells arranged adjacent to each other in the first direction, and the other of which is configured to be opposite to the terminal of the other of two cells arranged adjacent to each other in the first direction.

[0062] The second bearing structure has a plurality of second welding hole groups, the second welding hole group including two second welding holes, the two second welding holes being respectively arranged opposite to the two first welding holes.

[0063] Specifically, by providing a first welding hole in the first bearing structure and a second welding hole in the second bearing structure, with the first and second welding holes arranged opposite to each other and positioned opposite to the terminals of the battery cell, it is convenient to weld the busbar to the terminals of the battery cell.

[0064] In some embodiments, the first bearing structure includes a plurality of first explosion-proof openings, the first explosion-proof openings being configured to correspond to the battery cell and to be configured opposite to the explosion-proof valve of the battery cell;

[0065] The second load-bearing structure includes a plurality of second explosion-proof openings, which are configured to correspond to and be opposite to the first explosion-proof opening.

[0066] Specifically, by setting a first explosion-proof opening in the first bearing structure and a second explosion-proof opening in the second bearing structure, the first and second explosion-proof openings are arranged opposite to each other and opposite to the explosion-proof valve of the battery cell, so as to avoid the explosion-proof valve and ensure that the battery cell can reliably vent air in the event of thermal runaway.

[0067] According to a second aspect of the present disclosure, a battery pack is also provided, the battery pack including a plurality of battery cells and the battery cell connection assembly;

[0068] The cell connection assembly is disposed on the side of the cell where the electrode post is located;

[0069] The plurality of battery cells include a plurality of first battery cell groups, the plurality of first battery cell groups are arranged in a first direction, and the first battery cell groups include a plurality of first battery cells arranged sequentially in a second direction.

[0070] The busbar is used to electrically connect two first cells arranged adjacent to each other in a first direction.

[0071] According to a third aspect of the present disclosure, a vehicle is also provided, the vehicle including the aforementioned cell connection assembly.

[0072] The technical solutions provided by the embodiments of this disclosure can include the following beneficial effects: First, by connecting the first and second support structures together, and placing the busbar between the first and second support structures, the first and second support structures can effectively protect the busbar. Second, by providing an isolator on the first and / or second support structures, and the isolator being placed between two adjacent busbars in the second direction, and effectively insulating and isolating the two adjacent busbars, it is not necessary to set the gap between the two adjacent busbars too large. The distance between adjacent busbars can be minimized to the greatest extent, without considering their electrical clearance requirements, thereby increasing the busbar arrangement space and the busbar current-carrying area; in addition, by reducing the gap between two adjacent busbars, the volume of the battery pack can be reduced, the space utilization rate can be improved, and the cost can be reduced.

[0073] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0074] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure.

[0075] Figure 1 This is an exploded view of a battery cell connection assembly and a battery cell according to one embodiment of the present disclosure.

[0076] Figure 2 This is a three-dimensional structural diagram of a cell connection assembly and a cell according to one embodiment of the present disclosure.

[0077] Figure 3 This is a schematic diagram of the first support structure and the first isolation member of a cell connection assembly according to one embodiment of the present disclosure.

[0078] Figure 4 yes Figure 3A magnified view of a portion of point a.

[0079] Figure 5 yes Figure 3 A magnified view of a section at point b.

[0080] Figure 6 This is a schematic diagram of the second support structure and the second isolation member of the cell connection assembly according to one embodiment of the present disclosure.

[0081] Figure 7 yes Figure 6 A magnified view of a section at point c.

[0082] Figure 8 This is a schematic diagram of the structure of a flexible electrical connector of a cell connection assembly according to one embodiment of the present disclosure.

[0083] Figure 9 This is a partial cross-sectional view of a cell connection assembly according to one embodiment of the present disclosure.

[0084] Explanation of reference numerals in the attached figures

[0085] 1. First load-bearing structure; 10. First opening; 101. Edge of the first opening; 102. Edge of the second opening; 1021. Middle edge segment; 1022. Connecting edge segment; 1023. First connecting segment; 1024. Second connecting segment; 11. First welding hole group; 111. First welding hole; 12. First explosion-proof opening;

[0086] 2. Second load-bearing structure; 20. Second opening; 21. Second welding hole group; 211. Second welding hole; 22. Second explosion-proof opening;

[0087] 3. Busbar;

[0088] 4. Isolation component; 41. First isolation component; 411. First isolation plate; 4110. First notch; 412. Second isolation plate; 4120. Second notch; 42. Second isolation component; 421. Third isolation plate; 422. Fourth isolation plate;

[0089] 5. Flexible electrical connector; 51. Flexible connector body; 52. Sampling group; 521. First sampling unit; 522. Second sampling unit;

[0090] 100. Cell connection assembly;

[0091] 200. Battery cell; 2001. Terminal post; 2002. Explosion-proof valve; 2003. First battery cell assembly; 2004. First battery cell;

[0092] A. First direction; B. Second direction; C. Third direction. Detailed Implementation

[0093] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numerals in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this disclosure. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this disclosure as detailed in the appended claims.

[0094] In this disclosure, unless otherwise stated, the directional terms "first direction," "second direction," and "third direction" refer to the three intersecting directions, as detailed in the following references. Figure 1 As shown. The directional terms used, such as "inner" and "outer", refer to the inner and outer parts of the specific structural outline; the terms used, such as "first" and "second", are only used to distinguish one element from another and do not have any sequential or important meaning.

[0095] In the description of this disclosure, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0096] Reference Figures 1 to 9 As shown, this disclosure provides a cell connection assembly 100, which includes a first support structure 1, a second support structure 2, and a plurality of busbars 3.

[0097] The first bearing structure 1 and the second bearing structure 2 are connected together. The busbar 3 is disposed between the first bearing structure 1 and the second bearing structure 2 and is used to electrically connect two adjacent battery cells 200 arranged in the first direction A.

[0098] In this embodiment, at least one of the first load-bearing structure 1 and the second load-bearing structure 2 is provided with at least one isolation member 4. The isolation member 4 is disposed between two adjacent busbars 3 arranged in the second direction B and is capable of insulating and isolating the two busbars 3. In this embodiment, the first direction A and the second direction B are intersecting.

[0099] In the above technical solution, firstly, by connecting the first supporting structure 1 and the second supporting structure 2 together, and placing the busbar 3 between the first supporting structure 1 and the second supporting structure 2, the first supporting structure 1 and the second supporting structure 2 can effectively protect the busbar 3. Secondly, by providing an isolator 4 on the first supporting structure 1 and / or the second supporting structure 2, and by placing the isolator 4 between two adjacent busbars 3 in the second direction B, and by effectively insulating and isolating the two adjacent busbars 3, it is not necessary to set the gap between the two adjacent busbars 3 too large. The distance between the adjacent busbars 3 can be minimized to the maximum extent, without considering their electrical clearance requirements. This increases the arrangement space of the busbar 3 and the current-carrying area of ​​the busbar 3. In addition, by reducing the gap between two adjacent busbars 3, the volume of the battery pack can be reduced, the space utilization rate can be improved, and the cost can be reduced.

[0100] Optionally, the first load-bearing structure 1 and the second load-bearing structure 2 described above can be constructed in any suitable shape and structure, and this disclosure does not limit them. For example, the first load-bearing structure 1 and the second load-bearing structure 2 can be constructed as sheet-like structures.

[0101] As for the materials of the first load-bearing structure 1 and the second load-bearing structure 2, they can be made of insulating materials. For example, the first load-bearing structure 1 and the second load-bearing structure 2 can be made of PET (polyethylene terephthalate) or PI (polyimide), and this disclosure does not limit them.

[0102] Optionally, the connection between the first load-bearing structure 1 and the second load-bearing structure 2 can be achieved by pressing, but this disclosure does not limit the specific connection method of the first load-bearing structure 1 and the second load-bearing structure 2.

[0103] In addition, the isolation member 4 can also be made of insulating material. Considering the convenience of part forming, the isolation member 4 can be integrally formed on the first load-bearing structure 1 and / or the second load-bearing structure 2. For example, the isolation member 4 can be integrally formed on the first load-bearing structure 1 and / or the second load-bearing structure 2 by stamping. This disclosure does not limit this.

[0104] In one implementation, reference Figures 1 to 4 As shown, the first load-bearing structure 1 is provided with at least one first isolation member 41. The first isolation member 41 is disposed between two adjacent busbars 3 arranged in the second direction B and is capable of insulating and isolating the two.

[0105] The first isolation member 41 includes a first isolation plate 411, which is connected to the first load-bearing structure 1 and extends toward the second load-bearing structure 2 in the third direction C to abut against the second load-bearing structure 2; wherein the first direction A, the second direction B and the third direction C are arranged to intersect each other.

[0106] In this embodiment, by extending the first isolation plate 411 in the third direction C and abutting against the second support structure 2, effective insulation isolation can be achieved between two adjacent busbars 3 in the second direction B, reducing the risk of electrical short circuits between the busbars 3 and enhancing electrical safety. Furthermore, by having the first isolation plate 411 abut against the second support structure 2, the stability between the first support structure 1 and the second support structure 2 can be effectively improved, and the compactness of the structural design can also be enhanced, increasing space utilization.

[0107] In another embodiment, refer to Figure 3 and Figure 4 As shown, the first isolation member 41 also includes a second isolation plate 412; the second isolation plate 412 is connected to the first support structure 1 and extends toward the second support structure 2 in the third direction C to abut against the second support structure 2; wherein, the second isolation plate 412 and the first isolation plate 411 are opposite to and spaced apart in the second direction B.

[0108] In this embodiment, by adding the aforementioned second isolation plate 412, double insulation protection can be provided, further improving the insulation effect. Secondly, it can also further improve the stability between the first load-bearing structure 1 and the second load-bearing structure 2, further improving the compactness of the structural design and increasing the space utilization rate.

[0109] Optionally, refer to Figure 3 and Figure 4 As shown, the first bearing structure 1 has at least one first opening 10, the first opening 10 is located between two adjacent busbars 3 arranged in the second direction B, and the first opening 10 is correspondingly arranged with the first isolation member 41; wherein, the first opening 10 includes two first opening edges 101 arranged opposite to each other in the second direction B, and the first isolation plate 411 and the second isolation plate 412 are respectively connected to the two first opening edges 101.

[0110] In this embodiment, firstly, by forming a first opening 10 on the first supporting structure 1, the design of the first opening 10 allows the first isolation plate 411 and the second isolation plate 412 to be integrally formed on the first supporting structure 1 without the need for additional parts to install the first isolation plate 411 and the second isolation plate 412. For example, the first isolation plate 411 and the second isolation plate 412 can be integrally formed at the first opening 10 by stamping and bending.

[0111] Secondly, through the first opening 10, when the aforementioned cell connection assembly 100 is applied to a battery pack that requires potting, the potting compound can enter into the gap between the first support structure 1 and the second support structure 2 through the first opening 10, thereby significantly improving the filling effect of the potting compound and improving the uniformity of the potting compound filling.

[0112] Reference Figure 3 and Figure 5 As shown, the first opening 10 also includes two second opening edges 102 disposed opposite to each other in the first direction A; one end of the second opening edge 102 is connected to the end of one of the first opening edges 101, and the other end of the second opening edge 102 is connected to the end of the other first opening edge 101; wherein the second opening edge 102 and the first opening edge 101 are smoothly connected.

[0113] That is, in this embodiment, by smoothly connecting the second opening edge 102 to the first opening edge 101, the tearing of the first opening 10 due to stress concentration can be reduced.

[0114] Optionally, refer to Figure 5 As shown, the second opening edge 102 includes a middle edge segment 1021 and two connecting edge segments 1022. The two connecting edge segments 1022 are connected to both ends of the middle edge segment 1021, and the end of the connecting edge segment 1022 away from the middle edge segment 1021 is connected to the end of the corresponding first opening edge 101. The two connecting edge segments 1022 are arranged opposite to each other in the second direction B, and the connecting edge segments 1022 are smoothly connected to the first opening edge 101.

[0115] In this embodiment, the two connecting edge segments 1022 are arranged opposite each other in the second direction B, providing bidirectional support and reducing deformation or damage caused by external vibration or impact. Furthermore, the connecting edge segments 1022 are smoothly connected to the first opening edge 101, creating a smooth transition between the second opening edge 102 and the first opening edge 101. Compared to right-angle or acute-angle corners, this design effectively reduces stress concentration and improves the overall rigidity and fatigue resistance of the first load-bearing structure 1.

[0116] In one implementation, reference Figure 5 As shown, the connecting edge segment 1022 includes a first connecting segment 1023 and a second connecting segment 1024. One end of the first connecting segment 1023 is connected to the middle edge segment 1021, and the other end of the first connecting segment 1023 is connected to the second connecting segment 1024. The end of the second connecting segment 1024 away from the first connecting segment 1023 is connected to the end of the first opening edge 101. At least the second connecting segment 1024 is constructed as an arc-shaped edge.

[0117] In this embodiment, by constructing at least the second connecting segment 1024 with an arc-shaped edge, there are two methods: one is that only the second connecting segment 1024 is constructed with an arc-shaped edge, and the other is that both the first connecting segment 1023 and the second connecting segment 1024 are constructed with arc-shaped edges. This arc-shaped edge design allows the structure to transition from a rigid to a flexible structure, effectively dispersing stress distribution and reducing the likelihood of tearing due to stress concentration.

[0118] Optionally, the dimension of the first partition plate 411 and / or the second partition plate 412 extending from the third party to C is not less than the dimension of the busbar 3 extending from the third party to C.

[0119] In this embodiment, the size design of the first isolation plate 411 and / or the second isolation plate 412 ensures that the bus 3 can be completely covered on the third direction C, providing all-round electrical isolation, which can effectively reduce the short circuit risk between adjacent bus 3.

[0120] For example, the dimensions of the first isolation plate 411 and / or the second isolation plate 412 extending in the third direction C can be equal to the dimensions of the busbar 3 extending in the third direction C. The two sides of the busbar 3 in the third direction C can respectively abut against the inner side of the first bearing structure 1 and the inner side of the second bearing structure 2. This disclosure does not limit this.

[0121] Optionally, the dimension of the first partition plate 411 and / or the second partition plate 412 extending in the first direction A is not less than the dimension of the busbar 3 extending in the first direction A.

[0122] In this embodiment, the first isolation plate 411 and / or the second isolation plate 412 completely cover the busbar 3 in the first direction A, ensuring electrical isolation between adjacent busbars 3 and effectively reducing the risk of short circuits between adjacent busbars 3. For example, the dimension of the first isolation plate 411 and / or the second isolation plate 412 extending in the first direction A can be greater than the dimension of the busbar 3 extending in the first direction A, and this disclosure does not limit this.

[0123] In other embodiments, the first partition plate 411 abuts against one of the two adjacent busbars 3 in the second direction B; the second partition plate 412 abuts against the other of the two adjacent busbars 3 in the second direction B.

[0124] As can be seen, when one of the busbars 3 is provided with first isolation members 41 on both sides along the second direction B, one side of the busbar 3 along the second direction B abuts against the first isolation plate 411 of one of the first isolation members 41 in the second direction B, and the other side of the busbar 3 along the second direction B abuts against the second isolation plate 412 of the other first isolation member 41 in the second direction B, thereby enabling effective limiting, covering and insulating protection of the busbar 3.

[0125] Reference Figure 1 and Figure 8 As shown, the battery cell connection assembly 100 also includes at least one flexible electrical connector 5; the flexible electrical connector 5 is disposed between the first bearing structure 1 and the second bearing structure 2, and the flexible electrical connector 5 can be electrically connected to two busbars 3 arranged adjacent to each other in the second direction B.

[0126] In this embodiment, firstly, by placing the flexible electrical connector 5 between the first supporting structure 1 and the second supporting structure 2, the first supporting structure 1 and the second supporting structure 2 can effectively protect the flexible electrical connector 5. Secondly, the flexible electrical connector 5 can be electrically connected to two busbars 3 arranged adjacent to each other in the second direction B, thereby realizing electrical connection with the two adjacent busbars 3.

[0127] Optionally, the flexible electrical connector 5 can be constructed as an FPC (Flexible Printed Circuit) or an FFC (Flexible Flat Cable). This disclosure does not limit the specific type of the flexible electrical connector 5.

[0128] In one embodiment, reference is made to... Figure 8 As shown, the flexible electrical connector 5 includes a flexible body 51 and at least one sampling group 52; the sampling group 52 includes a first sampling portion 521 and a second sampling portion 522, which are electrically connected to both sides of the flexible body 51 in the second direction B. The flexible body 51 extends along the first direction A and is at least partially disposed opposite to the first opening 10 in the third direction C; the first isolation plate 411 has a first notch 4110, through which the first sampling portion 521 passes to be electrically connected to one of two busbars 3 arranged adjacent to each other in the second direction B; the second isolation plate 412 has a second notch 4120, through which the second sampling portion 522 passes to be electrically connected to the other of the two busbars 3 arranged adjacent to each other in the second direction B.

[0129] In this embodiment, firstly, the first sampling unit 521 and the second sampling unit 522 in the sampling group 52 are respectively disposed on both sides of the flexible body 51 along the second direction B, and the first sampling unit 521 and the second sampling unit 522 can be electrically connected to two adjacent busbars 3 respectively. Since the busbars 3 are electrically connected to the battery cell 200, the first sampling unit 521 and the second sampling unit 522 can collect temperature information and voltage information of the battery cell 200.

[0130] Secondly, by forming a first notch 4110 on the first isolation plate 411, the first notch 4110 is used to avoid the first sampling unit 521, so as to facilitate the first sampling unit 521 to collect information; by forming a second notch 4120 on the second isolation plate 412, the second notch 4120 is used to avoid the second sampling unit 522, so as to facilitate the second sampling unit 522 to collect the mechanism information.

[0131] Optionally, refer to Figure 4 and Figure 8 As shown, the first sampling unit 521 and the second sampling unit 522 are arranged opposite to each other in the second direction B, and the first notch 4110 and the second notch 4120 are arranged opposite to each other in the second direction B.

[0132] In this embodiment, the symmetrical arrangement described above avoids clustering and intersection on the same side, reduces wiring conflicts, and also improves assembly efficiency and consistency.

[0133] Optionally, the flexible body 51 is spaced apart from the first isolation plate 411 and / or the second isolation plate 412 in the second direction B.

[0134] In this embodiment, by setting the interval in the second direction B, the flexible component body 51 maintains a certain distance from the first isolation plate 411 and the second isolation plate 412, so as to avoid the flexible component body 51 completely blocking the first opening 10 and ensure that the glue can be smoothly injected into the space between the first bearing structure 1 and the second bearing structure 2 through the first opening 10.

[0135] Reference Figure 1 , Figure 6 , Figure 7 as well as Figure 9 As shown, the second load-bearing structure 2 is provided with at least one second isolation member 42. The second isolation member 42 is disposed between two adjacent busbars 3 arranged in the second direction B and is capable of insulating and isolating the two. The second isolation member 42 includes a third isolation plate 421, which is connected to the second load-bearing structure 2 and extends toward the first load-bearing structure 1 in the third direction C to abut against the first load-bearing structure 1. The third isolation plate 421 is opposite to and abuts against the first isolation plate 411 in the second direction B.

[0136] In this embodiment, by providing a second isolation member 42 on the second bearing structure 2, and the second isolation member 42 including a third isolation plate 421, and by having the third isolation plate 421 opposite to and abutting against the first isolation plate 411 in the second direction B, the insulation isolation between two adjacent busbars 3 can be further enhanced; in addition, the strength between the first bearing structure 1 and the second bearing structure 2 can also be effectively improved, and the vibration resistance and deformation resistance of the cell connection assembly 100 can be improved.

[0137] Reference Figure 1 , Figure 6 , Figure 7 as well as Figure 9 As shown, the first isolation member 41 further includes a second isolation plate 412; the second isolation plate 412 is connected to the first support structure 1 and extends toward the second support structure 2 in the third direction C to abut against the second support structure 2; the second isolation member 42 also includes a fourth isolation plate 422, the fourth isolation plate 422 is connected to the second support structure 2 and extends toward the first support structure 1 in the third direction C to abut against the first support structure 1; wherein, the fourth isolation plate 422 and the third isolation plate 421 are opposite to and spaced apart in the second direction B, and the fourth isolation plate 422 and the second isolation plate 412 are opposite to and abut against each other in the second direction B.

[0138] That is, for the first isolation member 41 on the first bearing structure 1 and the second isolation member 42 on the second bearing structure 2, the first isolation plate 411 of the first isolation member 41 and the third isolation plate 421 of the second isolation member 42 abut in the second direction B, and the second isolation plate 412 of the first isolation member 41 and the fourth isolation plate 422 of the second isolation member 42 abut in the second direction B. In addition to serving as insulation and providing support, they can also serve as positioning members for the first bearing structure 1 and the second bearing structure 2.

[0139] Optionally, refer to Figure 6 and Figure 7 As shown, the first support structure 1 has at least one first opening 10, which is located between two adjacent busbars 3 arranged in the second direction B, and the first opening 10 is correspondingly arranged with the first isolation member 41; the second support structure 2 has at least one second opening 20, which is correspondingly arranged with the first opening 10 and the second opening 20 and is arranged opposite to each other in the third direction C.

[0140] In this embodiment, firstly, by forming a second opening 20 on the second supporting structure 2, the design of the second opening 20 allows the third isolation plate 421 and the fourth isolation plate 422 to be integrally formed on the second supporting structure 2 without the need for additional parts to install the third isolation plate 421 and the fourth isolation plate 422. For example, the third isolation plate 421 and the fourth isolation plate 422 can be integrally formed at the second opening 20 by stamping and bending.

[0141] Secondly, through the second opening 20, when the aforementioned cell connection assembly 100 is applied to a battery pack that requires potting, the potting compound can enter into the gap between the second support structure 2 and the cell 200 through the second opening 20, thereby significantly improving the filling effect of the potting compound and improving the uniformity of the potting compound filling.

[0142] Optionally, refer to Figure 9 As shown, the projection of the first opening 10 onto the third direction C is the first projection, and the projection of the second opening 20 onto the third direction C is the second projection; the area of ​​the first projection is smaller than the area of ​​the second projection, and the first projection is within the second projection; wherein, the outer side of the first isolation plate 411 is opposite to and abuts against the inner side of the third isolation plate 421, and the outer side of the second isolation plate 412 is opposite to and abuts against the inner side of the fourth isolation plate 422.

[0143] In this embodiment, the opening area of ​​the first opening 10 is smaller than the opening area of ​​the second opening 20, and the outer surfaces of the two partition plates of the first partition 41 abut against the inner surfaces of the two partition plates of the second partition 42, that is, the first partition 41 is inserted into the second partition 42, thereby defining a space for accommodating the busbar 3. This space can provide all-round wrapping and insulation protection for the busbar 3. Furthermore, the second partition 42 can limit the first partition 41 in the second direction B. That is, by limiting the first partition 41 and the second partition 42 in the second direction B, the first bearing structure 1 and the second bearing structure 2 are limited in the second direction B.

[0144] Reference Figure 3 and Figure 6As shown, the first support structure 1 has a plurality of first welding hole groups 11, which correspond to and are arranged opposite to the busbar 3; the first welding hole group 11 includes two first welding holes 111, one of which is arranged opposite to the terminal post 2001 of one of the two adjacent cells 200 arranged in the first direction A, and the other is arranged opposite to the terminal post 2001 of the other of the two adjacent cells 200 arranged in the first direction A; the second support structure 2 has a plurality of second welding hole groups 21, which includes two second welding holes 211, which are respectively arranged opposite to the two first welding holes 111.

[0145] In this embodiment, by providing a first welding hole 111 in the first support structure 1 and a second welding hole 211 in the second support structure 2, the first welding hole 111 and the second welding hole 211 are arranged opposite to each other and are positioned opposite to the terminal post 2001 of the battery cell 200, which facilitates the welding of the busbar 3 to the terminal post 2001 of the battery cell 200.

[0146] Optionally, refer to Figure 3 and Figure 6 As shown, the first bearing structure 1 includes a plurality of first explosion-proof openings 12, which are configured to correspond to the battery cell 200 and to be configured opposite to the explosion-proof valve 2002 of the battery cell 200; the second bearing structure 2 includes a plurality of second explosion-proof openings 22, which are configured to correspond to and be opposite to the first explosion-proof openings 12.

[0147] In this embodiment, a first explosion-proof opening 12 is provided in the first bearing structure 1, and a second explosion-proof opening 22 is provided in the second bearing structure 2. The first explosion-proof opening 12 and the second explosion-proof opening 22 are arranged opposite to each other and are positioned opposite to the explosion-proof valve 2002 of the battery cell 200. This is used to avoid the explosion-proof valve 2002 and ensure that the battery cell 200 can reliably vent air in the event of thermal runaway.

[0148] Reference Figure 2 As shown, this disclosure also includes a battery pack, which includes a plurality of battery cells 200 and the aforementioned battery cell connection assembly 100; the battery cell connection assembly 100 is disposed on the side of the battery cell 200 where the terminal post 2001 is disposed; wherein, the plurality of battery cells 200 includes a plurality of first battery cell groups 2003, the plurality of first battery cell groups 2003 are arranged in a first direction A, and the first battery cell group 2003 includes a plurality of first battery cells 2004 arranged sequentially in a second direction B; the busbar 3 is used to electrically connect two first battery cells 2004 arranged adjacent to each other in the first direction A.

[0149] This disclosure also provides a vehicle that includes the aforementioned battery pack.

[0150] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of this disclosure. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the following claims.

[0151] It should be understood that this disclosure is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. An electrical cell connection assembly, characterized by The cell connection assembly includes a first support structure, a second support structure, and multiple busbars; The first support structure and the second support structure are connected together, and the busbar is disposed between the first support structure and the second support structure and is used to electrically connect two battery cells arranged adjacent to each other in the first direction; At least one of the first and second load-bearing structures is provided with at least one isolating member, which is disposed between two busbars arranged adjacent to each other in the second direction and is capable of insulating the two busbars; wherein the first direction and the second direction are intersecting.

2. The cell connection assembly of claim 1, wherein, The first load-bearing structure is provided with at least one first isolation member, which is disposed between two busbars arranged adjacent to each other in the second direction and is capable of insulating and isolating the two. The first isolation member includes a first isolation plate, which is connected to the first load-bearing structure and extends toward the second load-bearing structure in a third direction to abut against the second load-bearing structure; wherein the first direction, the second direction, and the third direction are arranged to intersect each other.

3. The cell connection assembly of claim 2, wherein, The first isolation element also includes a second isolation plate; The second isolation plate is connected to the first supporting structure and extends toward the second supporting structure in the third direction to abut against the second supporting structure; wherein the second isolation plate and the first isolation plate are opposite to each other and spaced apart in the second direction.

4. The cell connection assembly of claim 3, wherein, The first support structure has at least one first opening, which is located between two busbars arranged adjacent to each other in the second direction, and the first opening is corresponding to the first isolator. The first opening includes two first opening edges disposed opposite each other in the second direction, and the first isolation plate and the second isolation plate are respectively connected to the two first opening edges.

5. The cell connection assembly of claim 4, wherein, The first opening also includes two second opening edges disposed opposite to each other in the first direction; One end of the second opening edge is connected to the end of one of the first opening edges, and the other end of the second opening edge is connected to the end of the other first opening edge; The second opening edge is smoothly connected to the first opening edge.

6. The cell connection assembly of claim 5, wherein, The second opening edge includes a middle edge segment and two connecting edge segments. The two connecting edge segments are connected to both ends of the middle edge segment, and the end of the connecting edge segment away from the middle edge segment is connected to the end of the corresponding first opening edge. The two connecting edge segments are arranged opposite each other in a second direction, and the connecting edge segments are smoothly connected to the first opening edge.

7. The cell connection assembly of claim 6, wherein, The connecting edge segment includes a first connecting segment and a second connecting segment. One end of the first connecting segment is connected to the middle edge segment, and the other end of the first connecting segment is connected to the second connecting segment. The end of the second connecting segment away from the first connecting segment is connected to the end of the first opening edge. At least the second connecting segment is constructed with an arc-shaped edge.

8. The cell connection assembly of any one of claims 3-7, wherein, The dimension of the first isolation plate and / or the second isolation plate extending in the third direction is not less than the dimension of the busbar extending in the third direction.

9. The cell connection assembly according to any one of claims 3-7, characterized in that, The dimension of the first isolation plate and / or the second isolation plate extending in the first direction is not less than the dimension of the busbar extending in the first direction.

10. The cell connection assembly of any one of claims 3-7, wherein, The first isolation plate abuts against one of the two adjacent busbars in the second direction; the second isolation plate abuts against the other of the two adjacent busbars in the second direction.

11. The cell connection assembly of any one of claims 3-7, wherein, The cell connection assembly further includes at least one flexible electrical connector; The flexible electrical connector is disposed between the first bearing structure and the second bearing structure, and the flexible electrical connector can be electrically connected to two busbars arranged adjacent to each other in the second direction.

12. The cell connection assembly of claim 11, wherein, The flexible electrical connector includes a flexible body and at least one sampling group; The sampling group includes a first sampling part and a second sampling part, which are electrically connected to both sides of the flexible body in the second direction, respectively. The flexible component body extends along the first direction and is at least partially disposed opposite to the first opening in the third direction; The first isolation plate has a first notch, and the first sampling part passes through the first notch to be electrically connected to one of the two busbars arranged adjacent to each other in a second direction; The second isolation plate has a second notch, through which the second sampling section passes to be electrically connected to the other of the two busbars arranged adjacent to each other in the second direction.

13. The cell connection assembly of claim 12, wherein, The first sampling unit and the second sampling unit are arranged opposite to each other in the second direction, and the first notch and the second notch are arranged opposite to each other in the second direction.

14. The cell connection assembly of claim 12, wherein, The flexible component body is spaced apart from the first isolation plate and / or the second isolation plate in the second direction.

15. The cell connection assembly of claim 2, wherein, The second load-bearing structure is provided with at least one second isolator, which is disposed between two busbars arranged adjacent to each other in the second direction and is capable of insulating and isolating the two. The second isolation member includes a third isolation plate, which is connected to the second load-bearing structure and extends toward the first load-bearing structure in the third direction to abut against the first load-bearing structure; The third isolation plate is opposite to and abuts against the first isolation plate in the second direction.

16. The cell connection assembly of claim 15, wherein, The first isolation member further includes a second isolation plate; the second isolation plate is connected to the first load-bearing structure and extends toward the second load-bearing structure in the third direction to abut against the second load-bearing structure; The second isolation member further includes a fourth isolation plate, which is connected to the second support structure and extends toward the first support structure in the third direction to abut against the first support structure; The fourth isolation plate and the third isolation plate are positioned opposite each other and spaced apart in the second direction, and the fourth isolation plate and the second isolation plate are positioned opposite each other and abut against each other in the second direction.

17. The cell connection assembly of claim 16, wherein, The first support structure has at least one first opening, which is located between two busbars arranged adjacent to each other in the second direction, and the first opening is corresponding to the first isolator. The second load-bearing structure has at least one second opening, and the first opening is arranged corresponding to the second opening and is disposed opposite to each other in the third direction.

18. The cell connection assembly of claim 17, wherein, The projection of the first opening onto the third direction is the first projection, and the projection of the second opening onto the third direction is the second projection; the area of ​​the first projection is smaller than the area of ​​the second projection, and the first projection is within the second projection; Wherein, the outer side of the first isolation plate is opposite to and abuts against the inner side of the third isolation plate, and the outer side of the second isolation plate is opposite to and abuts against the inner side of the fourth isolation plate.

19. The cell connection assembly according to claim 1, characterized in that, The first supporting structure has a plurality of first welding hole groups, which are corresponding to and opposite to the busbar; The first welding hole group includes two first welding holes, one of which is configured to be opposite to the terminal of one of two cells arranged adjacent to each other in the first direction, and the other of which is configured to be opposite to the terminal of the other of two cells arranged adjacent to each other in the first direction. The second bearing structure has a plurality of second welding hole groups, the second welding hole group including two second welding holes, the two second welding holes being respectively arranged opposite to the two first welding holes.

20. The cell connection assembly of claim 1, wherein, The first bearing structure includes a plurality of first explosion-proof openings, which are configured to correspond to the battery cell and to be configured opposite to the explosion-proof valve of the battery cell. The second load-bearing structure includes a plurality of second explosion-proof openings, which are configured to correspond to and be opposite to the first explosion-proof opening.

21. A battery pack, characterized by The battery pack includes a plurality of battery cells and a battery cell connection assembly as described in any one of claims 1-20; The cell connection assembly is disposed on the side of the cell where the electrode post is located; The plurality of battery cells include a plurality of first battery cell groups, the plurality of first battery cell groups are arranged in the first direction, and the first battery cell group includes a plurality of first battery cells arranged sequentially in the second direction; The busbar is used to electrically connect two first cells arranged adjacent to each other in the first direction.

22. A vehicle characterized by The vehicle includes the battery pack of claim 21.

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