Battery module and battery pack

Abstract

This utility model belongs to the field of battery technology and discloses a battery module and battery assembly. The battery module includes a conductive connection component, a supporting and heat-conducting component, and multiple battery cell components. Each battery cell component is formed by multiple battery cells connected in series, and each battery cell has a tab at its end. The battery cell components and the conductive connection component are respectively disposed on the supporting and heat-conducting component. The conductive connection component and the tab are connected in a straight line, and the tab extends from the end of the battery cell along a straight line to the connection position. Therefore, by extending the tab in a straight line from the end of the battery cell, it can be directly connected to the end conductive connection component without pre-bending, eliminating the bending process and special equipment, reducing processing steps and labor input, and shortening the production cycle. At the same time, it improves production continuity, overcomes efficiency bottlenecks, reduces equipment maintenance and labor costs, and adapts to the demand for low cost and high efficiency in large-scale production.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery module and battery assembly. Background Technology

[0002] In the field of battery technology, the series and parallel connection of cell tabs is a core link in the battery module assembly process, which directly affects the electrical performance and production efficiency of the battery pack. In the existing series and parallel assembly process of soft-pack cells, in order to meet the welding connection requirements, the cell tabs need to be bent in advance, and then the power conduction path is constructed by bus welding or direct welding of the tabs.

[0003] The bending process causes the battery cell tabs to extend in an "L" or "Z" shape relative to the battery cell body. This not only adds extra processing steps and extends the production cycle, but also requires specialized bending equipment and corresponding operators, resulting in a significant increase in equipment investment, maintenance costs, and labor costs. At the same time, the cumbersome process reduces production continuity, restricts the improvement of grouping efficiency, and makes it difficult to meet the demand for low cost and high efficiency in large-scale production. Utility Model Content

[0004] The main purpose of this utility model is to provide a battery module and battery assembly, which aims to solve the technical problem that in the existing soft-pack battery cell assembly, the tabs need to be bent in advance before welding, which leads to increased processing steps, longer cycle time, increased cost, reduced production continuity, and limited efficiency, making it difficult to meet the needs of large-scale production.

[0005] To achieve the above-mentioned utility model objectives, this utility model proposes a battery module, including a conductive connection component, a supporting heat-conducting component, and multiple battery cell components;

[0006] The battery cell assembly is formed by connecting multiple battery cells in series, and each battery cell has a tab at its end;

[0007] The battery cell assembly and the conductive connection assembly are respectively disposed on the supporting heat-conducting assembly. The conductive connection assembly is connected to the tab in a straight line, and the tab extends from the end of the battery cell to the connection position in a straight line.

[0008] Furthermore, the supporting heat-conducting component includes a first supporting heat-conducting part, a second supporting heat-conducting part, and a third supporting heat-conducting part. The first supporting heat-conducting part and the third supporting heat-conducting part are disposed opposite to each other on the second supporting heat-conducting part. The battery cell assembly is located between the first supporting heat-conducting part and the third supporting heat-conducting part and is attached to the second supporting heat-conducting part.

[0009] Furthermore, the conductive connection assembly includes a plurality of first support connectors, each of which is disposed at an end of the supporting heat-conducting assembly. Each first support connector includes a first bracket and a first tab connector. The first bracket is connected to the supporting heat-conducting assembly, and the first tab connector is disposed at the end of the first bracket away from the supporting heat-conducting assembly and is connected to the tab.

[0010] Furthermore, the first bracket includes a bracket fixing part and an inlet part integrally connected to the bracket fixing part. The inlet part is provided with an inlet hole, and the first electrode connector is inserted into the inlet hole and connected to the inlet part.

[0011] Furthermore, the bracket fixing part includes a plug-in block, a connecting plate and a plurality of first reinforcing ribs. The plug-in block is connected to the inlet part, the connecting plate is disposed at the end of the plug-in block away from the inlet part, and the plurality of first reinforcing ribs are spaced apart on the connecting plate.

[0012] Furthermore, a slot is provided at the end of the plug block away from the inlet portion, and a plurality of first bracket connectors are provided at the end of the first reinforcing rib away from the connecting plate. The supporting heat-conducting assembly is inserted into the slot and connected to the first supporting connector through the first bracket connector.

[0013] Furthermore, the first electrode connector includes a connecting body, a first connecting portion and a second connecting portion, wherein the first connecting portion and the second connecting portion are disposed opposite to each other on the connecting body;

[0014] The inlet portion includes an inlet bracket, and the inlet hole is disposed on the inlet bracket. The inlet hole includes a first inlet hole and a second inlet hole arranged at intervals. The first connecting portion is disposed through the first inlet hole, and the second connecting portion is disposed through the second inlet hole. The connecting body is connected to the inlet bracket.

[0015] Furthermore, the inlet portion also includes a second reinforcing rib, which is connected to the side of the inlet bracket away from the bracket fixing portion, and the second reinforcing rib is located on the side of the first inlet hole away from the second inlet hole.

[0016] Furthermore, the conductive connection assembly further includes a second support connector, which is disposed on the support heat conduction assembly and located between the oppositely disposed first support connectors. The second support connector is connected to the tabs of the battery cells connected in series, and the battery cell assemblies corresponding to the support heat conduction assembly are connected in parallel through the second support connector.

[0017] Furthermore, the second support connector includes a second bracket and a second tab connector. The second bracket is connected to the support heat-conducting assembly, and the second tab connector is disposed on the second bracket and connected to the tab.

[0018] Furthermore, the second support includes a support connecting part and a receiving part, the receiving part being connected to the support connecting part, the receiving part having a through receiving hole, the second electrode connector being located in the receiving hole and connected to the electrode.

[0019] Furthermore, the bracket connection includes a bracket connection body and a plurality of third reinforcing ribs. The receiving part and the third reinforcing ribs are respectively disposed on the bracket connection body. The third reinforcing ribs are located on the side of the receiving part away from the receiving hole. A second bracket connector is disposed at the end of the third reinforcing rib away from the bracket connection body. The supporting heat-conducting assembly is connected to the second supporting connector through the second bracket connector.

[0020] Furthermore, the second support connector also includes a cover plate located at the opening of the receiving hole, and the cover plate is detachably connected to the receiving portion and in contact with the second electrode connector.

[0021] This utility model also proposes a battery module, including the battery module described in any of the above embodiments. There are multiple battery modules, with each pair of battery modules forming a group. The battery modules in each group are in close contact with each other to form a first protective structure. The conductive connection components included in each group of battery modules are in close contact with each other to form a second protective structure. The first protective structure and the second protective structure are arranged with offsets.

[0022] Beneficial effects:

[0023] This utility model discloses a battery module comprising a conductive connection assembly, a supporting and heat-conducting assembly, and multiple battery cell assemblies. Each battery cell assembly is formed by multiple battery cells connected in series, and each battery cell has a tab at its end. The battery cell assembly and the conductive connection assembly are respectively disposed on the supporting and heat-conducting assembly. The conductive connection assembly and the tab are linearly connected, and the tab extends linearly from the end of the battery cell to the connection position. Therefore, by extending the tab linearly from the end of the battery cell, it can be directly connected to the end conductive connection assembly without pre-bending, eliminating the bending process and specialized equipment, reducing processing steps and labor input, and shortening the production cycle. Simultaneously, it improves production continuity, overcomes efficiency bottlenecks, reduces equipment maintenance and labor costs, and adapts to the demands of large-scale production for low cost and high efficiency. Attached Figure Description

[0024] Figure 1This is a schematic diagram of a battery module according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the battery module portion according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic diagram of a heat-conducting support component according to an embodiment of the present invention;

[0027] Figure 4 This is a schematic diagram of the first support connector according to an embodiment of the present utility model;

[0028] Figure 5 This is an exploded view of the first support connector according to an embodiment of the present invention;

[0029] Figure 6 This is a schematic diagram of the second support connector portion according to an embodiment of the present invention;

[0030] Figure 7 This is a cross-sectional view of a battery module according to an embodiment of the present invention;

[0031] Figure 8 This is an embodiment of the present utility model. Figure 7 Enlarged view of point A.

[0032] in:

[0033] 1. Conductive connection assembly; 2. Supporting and heat-conducting assembly; 3. Cell assembly; 4. Electrode; 5. Cell; 6. First protective structure; 7. Second protective structure; 8. Battery module; 9. Battery assembly;

[0034] 20. First supporting heat-conducting part; 21. Second supporting heat-conducting part; 22. Third supporting heat-conducting part; 23. First through hole; 24. Connecting hole; 25. Second through hole;

[0035] 10. First support connector; 11. Second support connector;

[0036] 101. First support; 102. First support connector; 103. First electrode connector;

[0037] 1010. Bracket fixing part; 1011. Inlet part;

[0038] 1012. Connector block; 1013. Slot; 1014. Connecting plate; 1015. First reinforcing rib;

[0039] 1016. Insertion bracket; 1017. First insertion hole; 1018. Second insertion hole; 1019. Second reinforcing rib; 1020. Insertion hole;

[0040] 1030. Connecting body; 1031. First connecting part; 1032. Second connecting part;

[0041] 110. Second bracket; 111. Second electrode connector; 112. Cover plate;

[0042] 1101, bracket connecting part; 1102, receiving part; 1103, second bracket connecting piece; 1104, receiving hole;

[0043] 1105. Support connecting main body; 1106. Third reinforcing rib.

[0044] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0045] It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0046] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly and specifically defined.

[0047] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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 mechanical connection, a direct connection, or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0048] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0049] Reference Figures 1-2 This embodiment provides a battery module 9, including a conductive connection component 1, a supporting heat-conducting component 2, and multiple battery cell components 3;

[0050] The battery cell assembly 3 is formed by connecting multiple battery cells 5 in series, and the battery cell 5 is provided with a tab 4 at its end;

[0051] The battery cell assembly 3 and the conductive connection assembly 1 are respectively disposed on the supporting heat-conducting assembly 2. The conductive connection assembly 1 is connected to the tab 4 in a straight line, and the tab 4 extends from the end of the battery cell 5 to the connection position in a straight line.

[0052] In the above embodiments, the battery module 9 includes a cell assembly 3, a supporting and heat-conducting assembly 2, and a conductive connection assembly 1. The cell assembly 3 is formed by multiple cells 5 connected in series, and metal tabs 4 are led out at both ends of the cell assembly 3 for current conduction. The supporting and heat-conducting assembly 2 is used to support and fix other components. The conductive connection assembly 1 is a component that realizes the electrical connection between cells or between a cell and an external circuit, and can be used as a busbar. The cell assembly 3 and the conductive connection assembly 1 are respectively disposed on the supporting and heat-conducting assembly 2, and the conductive connection assembly 1 is disposed at the end of the cell 5 extending out of the tab 4. The conductive connection component 1 and the tab 4 are connected in a straight line, and the tab 4 extends from the end of the battery cell 5 along a straight line to the connection position. The tab 4 of the battery cell 5 extends directly from its end along a straight line, maintaining a straight state without any bending, and can directly connect face-to-face with the conductive connection component 1 located directly in front of it. The tab 4 extends from the end of the battery cell 5 along a straight line, and its extension trajectory is without bending, consistent with the docking direction of the conductive connection component 1. The conductive connection component 1 includes the first connecting part 1031, the second connecting part 1032 of the first tab connector 103, and the tab 4. The ends are aligned in the same direction. After the second tab connector 203 of the conductive connection assembly 1 is embedded into the receiving hole of the second bracket 201, it is coaxially aligned with the side of the corresponding tab 4. This straight-line corresponding connection method ensures that the tab 4 can be directly connected to the conductive connection assembly 1 without bending. That is, the conductive connection assembly 1 and the tab 4 are directly connected without bending the tab 4 for adaptation, and can be directly welded to achieve connection. In addition, the tab 4 extends from the end of the battery cell 5 in a straight line, and its extension direction is in the same straight line as the connection part of the conductive connection assembly. The two are precisely aligned in space. At the same time, there is also a "planar connection". Specific application scenarios: When the tab 4 (a thin metal sheet with its own flat surface) of the battery cell 5 is connected to the conductive connection component 1, the flat surface of the tab 4 is completely attached to the surface (flat surface) of the conductive connection component 1 and fixed by laser welding. Therefore, the tab 4 extends straight from the end of the battery cell and can be directly connected to the end conductive connection component 1 without pre-bending, eliminating the bending process and special equipment, reducing processing steps and labor input, and shortening the production cycle; at the same time, it improves production continuity, breaks through efficiency bottlenecks, reduces equipment maintenance and labor costs, and adapts to the demand for low cost and high efficiency in large-scale production.

[0053] Reference Figures 1-3 In one embodiment, the supporting heat-conducting component 2 includes a first supporting heat-conducting part 20, a second supporting heat-conducting part 21, and a third supporting heat-conducting part 22. The first supporting heat-conducting part 20 and the third supporting heat-conducting part 22 are disposed opposite to each other on the second supporting heat-conducting part 21. The battery cell component 3 is located between the first supporting heat-conducting part 20 and the third supporting heat-conducting part 22 and is attached to the second supporting heat-conducting part 21.

[0054] In the above embodiment, the supporting heat-conducting component 2 is composed of a first supporting heat-conducting part 20, a second supporting heat-conducting part 21, and a third supporting heat-conducting part 22. These three are a single structural component formed by an integral molding process (such as extrusion or stamping), and the whole presents an I-shaped cross section. The material is aluminum or aluminum alloy fins. The second supporting heat-conducting part 21 is located in the middle position, and the first supporting heat-conducting part 20 and the third supporting heat-conducting part 22 are located on the upper and lower sides of the second supporting heat-conducting part 21, respectively, and are vertically connected to the second supporting heat-conducting part 21 to form two horizontal sides similar to the upper and lower sides of an I-shape.

[0055] In this embodiment, four battery cells 5 are used. Every two battery cells 5 are connected in series and located on one side of the second support heat-conducting part 21. During assembly, these two battery cell assemblies 3 are placed on the left and right sides (or front and back sides, depending on the installation direction) of the second support heat-conducting part 21, respectively. The largest surface (large surface) of the battery cell assembly 3 is tightly attached to the side of the second support heat-conducting part 21. At the same time, the top edge of the battery cell assembly 3 contacts the lower surface of the first support heat-conducting part 20, and the bottom edge contacts the upper surface of the third support heat-conducting part 22. The first support heat-conducting part 20 and the third support heat-conducting part 22 achieve liquid cooling and liquid heating through thermally conductive structural adhesive and liquid cooling plate. The first support heat-conducting part 20 and the third support heat-conducting part 22 limit and constrain the battery cell assembly 3 from both the top and bottom directions, ensuring the positional accuracy and structural stability of the battery cell during module stacking and use, and effectively improving the heat dissipation efficiency of the entire battery cell 5.

[0056] Reference Figures 1-4 In one embodiment, the conductive connection assembly 1 includes a plurality of first support connectors 10. The first support connectors 10 are disposed at the ends of the supporting heat-conducting assembly 2. Each first support connector 10 includes a first bracket 101 and a first tab connector 103. The first bracket 101 is connected to the supporting heat-conducting assembly 2, and the first tab connector 103 is disposed at the end of the first bracket 101 away from the supporting heat-conducting assembly 2 and is connected to the tab 4.

[0057] In the above embodiment, the conductive connection assembly 1 is composed of a plurality of first support connectors 10. The first support connectors 10 are disposed at the ends of the supporting heat conduction assembly 2. Each first support connector 10 includes a first bracket 101 and a first tab connector 103. The first bracket 101 is preferably made of plastic material. Two first support connectors 10 are respectively disposed at both ends of the second supporting heat conduction part 21 supporting the heat conduction assembly 2, and are arranged opposite to each other. The first tab connector 103 is a metal conductive component, preferably aluminum or aluminum alloy, so that the first tab connector 103 is disposed at the end of the first bracket 101 away from the second supporting heat conduction part 21 and is connected to the tab 4.

[0058] Furthermore, the first bracket 101 includes a bracket fixing part 1010 and an inlet part 1011, and the bracket fixing part 1010 and the inlet part 1011 are designed as a single piece. At the same time, the inlet part 1011 is provided with a through inlet hole, which is located in the same radial direction as the tab 4. After the first tab connector 103 is pushed into the inlet hole, it is thermally riveted to the inlet part 1011. Meanwhile, the tab 4 is laser welded to the first tab connector 103.

[0059] Reference Figures 1-4 In one embodiment, the bracket fixing part 1010 includes a plug block 1012, a connecting plate 1014 and a plurality of first reinforcing ribs 1015. The plug block 1012 is connected to the inlet part 1011. The connecting plate 1014 is disposed at one end of the plug block 1012 away from the inlet part 1011. The plurality of first reinforcing ribs 1015 are spaced apart on the connecting plate 1014.

[0060] In the above embodiment, the bracket fixing part 1010 includes a plug block 1012, a connecting plate 1014, and a plurality of first reinforcing ribs 1015. The plug block 1012 preferably adopts a U-shaped plastic structure, which is composed of a vertical long side and two parallel vertical short sides. The connecting plate 1014 is a support component located inside the plug block 1012. Its upper and lower ends are respectively connected to the two vertical short sides of the plug block 1012, and one side is connected to the vertical long side of the plug block 1012, thereby firmly integrating the connecting plate 1014 inside the plug block 1012. A plurality of first reinforcing ribs 1015 are arranged at intervals on the side surface of the connecting plate 1014. The first reinforcing rib 1015 is a grid-like or rib-like structure composed of a plurality of transverse short ribs and a longitudinal long rib connected perpendicularly to each other.

[0061] Furthermore, slots 1013 are respectively provided on the two vertical short sides of the plug-in block 1012. The opening direction of these slots 1013 faces the free end of the plug-in block 1012. The end area of ​​the second support heat-conducting part 21 supporting the heat-conducting component 2 is just thick enough to be inserted into these two slots 1013. When the end of the second support heat-conducting part 21 is inserted into the slot 1013, the bracket fixing part 1010 is stuck inside the support heat-conducting component 2. The bracket fixing part 1010 is located in the longitudinal space formed between the first support heat-conducting part 20 and the third support heat-conducting part 22 of the support heat-conducting component 2. After insertion, the lower surface of the first support heat-conducting part 20 will abut against one vertical short side of the plug-in block 1012, while the upper surface of the third support heat-conducting part 22 will abut against the other vertical short side of the plug-in block 1012, realizing the quick, accurate and stable installation of the first bracket 101.

[0062] The first bracket 101 is provided with a first bracket connector 102. The first bracket connector 102 and the first bracket 101 are integrally molded plastic structures, usually designed as deformable columnar or pin-shaped structures. The second support heat-conducting part 21 supporting the heat-conducting component 2 is pre-drilled with a plurality of first through holes 23. During assembly, the first bracket 101 is placed at a designated position on the second support heat-conducting part 21, usually at the end region of the second support heat-conducting part 21. At this time, the first bracket connector 102 on the first bracket 101 will be precisely aligned and penetrate through the first through holes 23 on the second support heat-conducting part 21. Subsequently, by applying heat and pressure to the end of the first bracket connector 102 (i.e., hot riveting process), its end melts and expands, forming an enlarged structure similar to a rivet head. After cooling, this enlarged end will be firmly stuck on the other side of the first through hole 23, thereby firmly and non-removably fixing the first bracket 101 to the second support heat-conducting part 21.

[0063] Reference Figures 1-5 In one embodiment, the first electrode connector 103 includes a connecting body 1030, a first connecting part 1031 and a second connecting part 1032, wherein the first connecting part 1031 and the second connecting part 1032 are disposed opposite to each other on the connecting body 1030;

[0064] The inlet portion 1011 includes an inlet bracket 1016, and an inlet hole 1020 is disposed on the inlet bracket 1016. The inlet hole 1020 includes a first inlet hole 1017 and a second inlet hole 1018 arranged at intervals. A first connecting portion 1031 is disposed through the first inlet hole 1017, and a second connecting portion 1032 is disposed through the second inlet hole 1018. The connecting body 1030 is connected to the inlet bracket 1016.

[0065] In the above embodiment, the first tab connector 103 is integrally stamped or cast from a connecting body 1030, a first connecting portion 1031, and a second connecting portion 1032, forming an overall "π" shape. The connecting body 1030 is the horizontal main body, the first connecting portion 1031 extends longitudinally from one side of the connecting body 1030, and the second connecting portion 1032 extends longitudinally from the upper part of the middle of the connecting body 1030. The first connecting portion 1031 and the second connecting portion 1032 are arranged opposite to each other, and both the first connecting portion 1031 and the second connecting portion 1032 extend along the entire length of the connecting body 1030. The main body 1030, the first connecting part 1031 and the second connecting part 1032 are all straight plates; the inlet part 1011 is composed of an inlet bracket 1016, and its two sides are the same continuous structure as the two sides of the bracket fixing part 1010 plug block 1012. Between the two sides of the inlet bracket 1016, the inlet hole is provided on the inlet bracket 1011. The inlet hole 1020 includes a first inlet hole 1017 and a second inlet hole 1018 arranged at intervals. The two holes extend toward the two sides and form a hollow frame in the middle. A baffle is provided above the side of the second inlet hole 1018 away from the hollow frame.

[0066] Furthermore, in the area of ​​the guide bracket 1016 away from the bracket fixing part 1010, a second reinforcing rib 1019 is provided. This second reinforcing rib 1019 has a hollow design and is positioned on the side of the first guide hole 1017 away from the second guide hole 1018, i.e., mainly located in the outer region of the first guide hole 1017. The baffle is located at the top, below which is the hollow frame, and below the hollow frame is the second reinforcing rib 1019. The first guide hole 1017 is located between the hollow frame and the second reinforcing rib 1019, and the second guide hole 1018 is located between the hollow frame and the baffle. The second reinforcing rib 1019 and the guide bracket... 1016, plug block 1012, connecting plate 1014 and multiple first reinforcing ribs 1015 are all manufactured by integral injection molding process. The addition of second reinforcing rib 1019 significantly enhances the rigidity and bending resistance of the guide bracket 1016 in the area outside the first guide hole 1017, which can better support and fix the first connecting part 1031 of the first electrode connector 103, ensuring the structural stability and long-term reliability of the entire first bracket 101. In addition, since the busbar distance between the battery modules 9 is close and the electrical safety distance is close, the second reinforcing rib 1019 can effectively improve the creepage distance.

[0067] During assembly, the connecting body 1030 of the first tab connector 103 is horizontally aligned with the guide bracket 1016. By pushing the connecting body 1030, the first connecting part 1031 is inserted into the first guide hole 1017, and the second connecting part 1032 is inserted into the second guide hole 1018. After insertion, the two ends of the connecting body 1030 are riveted and fixed to the two sides of the guide bracket 1016 by a hot riveting process. Finally, the entire first support connector 10 is installed on the second support heat conduction part 21 of the support heat conduction component 2 through its bracket fixing part 1010. At this time, the first connecting part 1031 and the second connecting part 1032 are located on both sides of the second support heat conduction part 21, and their straight plate end faces are exposed for direct welding of the straight extension tabs 4 of the battery cell components 3 on both sides of the second support heat conduction part 21. This completely eliminates the bending process of the tabs 4, simplifies the production process, and reduces costs.

[0068] Reference Figures 1-3 , Figure 6 In one embodiment, the conductive connection assembly 1 further includes a second support connector 11, which is disposed on the support heat conduction assembly 2 and located between the oppositely disposed first support connectors 10. The second support connector 11 is connected to the tab 4 of the battery cell 5 connected in series, and the battery cell assembly 3 corresponding to the support heat conduction assembly 2 is connected in parallel through the second support connector 11.

[0069] In the above embodiments, the conductive connection assembly 1 further includes a second support connector 11. The second support connector 11 is connected to the middle of the second support heat conduction part 21 of the support heat conduction assembly 2. That is, the second support connector 11 is located between two oppositely arranged first support connectors 10. At the same time, when the two battery cells 5 are connected in series on the support heat conduction assembly 2 through two opposite tabs 4, the series connection position of their tabs 4 is arranged corresponding to the second support connector 11, so that the second support connector 11 is welded to the tabs 4 connected in series on the second support heat conduction part 21. At the same time, the battery cell assemblies 3 arranged side by side on both sides of the second support heat conduction part 21 of the support heat conduction assembly 2 are connected in parallel through the second support connector 11.

[0070] Furthermore, the conductive connection assembly 1 also includes a second support connector 11, which is composed of a second bracket 110 and a second tab connector 111. The second bracket 110 and the second tab connector 111 are manufactured using an integral injection molding process. The second bracket 110 is a plastic structural component used to support and fix the second tab connector 111 and connect it to the support heat-conducting assembly 2. The second tab connector 111 is a metal conductive component used to realize the electrical connection between the battery cells. Each battery cell assembly 3 is formed by two battery cells 5 connected in series adjacent to each other on the same side in the length direction. The second bracket 110 is located between two oppositely arranged first support connectors 10 and is installed in the middle of the second support heat-conducting part 21. The second bracket 110 is fixed to the second support heat-conducting part 21 by its own connection structure (such as a riveting component). The second tab connector 111 is disposed on the second bracket 110, and its position corresponds to... At the position of the tab 4 connecting two battery cells 5 in series, one end of the tab 4 of one battery cell 5 is connected to the first support connector 10, while the other end of the tab 4 of the battery cell 5 is stacked parallel to the corresponding end of the tab 4 of the adjacent battery cell 5. These two stacked tabs 4 are welded together to the second tab connector 111 to realize the series connection of the two battery cells 5. At the same time, through the layout of the second tab connector 111, the battery cell assemblies 3 on both sides of the second support heat conduction part 21 can be connected in parallel. That is, the battery cells 5 on the same side of the second support heat conduction part 21 are first connected in series, and the tabs 4 at both ends are connected to the first support connector 10 respectively; the tabs of the two battery cells 5 connected in series in the middle are connected to the second support connector 11, realizing the parallel connection of the battery cell assemblies 3 arranged on both sides of the second support heat conduction part 21. This realizes the efficient series connection of multiple battery cells 5 on the same side and the parallel connection of battery cell assemblies 3 on both sides, making the internal structure of the battery module more compact and the space utilization rate higher.

[0071] Reference Figures 1-3 , Figure 6 In one embodiment, the second bracket 110 includes a bracket connecting portion 1101 and a receiving portion 1102. The receiving portion 1102 is connected to the bracket connecting portion 1101. A through receiving hole 1104 is provided in the receiving portion 1102. The second electrode tab connecting piece 111 is located in the receiving hole 1104 and is connected to the electrode tab 4.

[0072] In the above embodiment, the second bracket 110 is composed of two parts: a bracket connecting part 1101 and a receiving part 1102. The bracket connecting part 1101 is preferably made of plastic and is provided with a second bracket connector 1103. The second bracket connector 1103 and the bracket connecting part 1101 are integrally formed plastic structures, typically heat-deformable columnar pins. The receiving part 1102 has a receiving hole 1104 inside for placing and fixing the second electrode connector 111. The receiving part 1102 has a receiving hole 1104 through both ends, which is an opening structure that passes through both ends of the receiving part 1102 for accommodating and fixing the second electrode connector 111. The second electrode connector 111 is positioned and is pre-set inside the receiving hole 1104, with its surface exposed for welding to the battery cell electrode 4; the second supporting heat-conducting part 21 supporting the heat-conducting assembly 2 is provided with two key holes: one is a connecting hole 24 through which the receiving part 1102 passes, and the other is a second through hole 25 located on the side of the connecting hole 24; in addition, a sampling hole is designed on the top of the bracket connecting part 1101, allowing an external sampling plate (for voltage or temperature sampling) to pass through this hole and directly contact the second bracket connector 1103 fixed in the receiving part 1102 to realize the output of electrical signals;

[0073] During assembly, the bracket connecting portion 1101 of the second bracket 110 is placed on the surface of the second support heat-conducting portion 21. At this time, the receiving portion 1102 is aligned with and passes through the connecting hole 24 on the second support heat-conducting portion 21, so that the second bracket 110 can be more securely embedded in the support heat-conducting component 2. At the same time, the second bracket connector 1103 on the bracket connecting portion 1101 is aligned with and passes through the second through hole 25 on the second support heat-conducting portion 21. Subsequently, the end of the second bracket connector 1103 is heat-riveted to melt and expand it, forming an enlarged head on the other side of the second support heat-conducting portion 21. After cooling, the bracket connecting portion 1101 is firmly and non-removably fixed to the second support heat-conducting portion 21, which enhances the connection stability and positioning accuracy between the second bracket 110 and the support heat-conducting component 2.

[0074] Reference Figures 1-3 , Figure 6 In one embodiment, the bracket connection portion 1101 includes a bracket connection body 1102 and a plurality of third reinforcing ribs 1106. The receiving portion 1102 and the third reinforcing ribs 1106 are respectively disposed on the bracket connection body 1105. The third reinforcing ribs 1106 are located on the side of the receiving portion 1102 away from the receiving hole 1104. A second bracket connector 1103 is disposed at one end of the third reinforcing rib 1106 away from the bracket connection body 1105. The supporting heat-conducting assembly 2 is connected to the second supporting connector 11 through the second bracket connector 1103.

[0075] In the above embodiment, the bracket connecting part 1101 includes a bracket connecting body 1105 and a plurality of third reinforcing ribs 1106. The receiving part 1102 and the third reinforcing ribs 1106 are respectively disposed on the bracket connecting body 1105. Two third reinforcing ribs 1106 are provided, symmetrically distributed on the left and right sides of the receiving part 1102, that is, the third reinforcing ribs 1106 are located on the side of the receiving part 1102 away from the receiving hole 1104. Each third reinforcing rib 1106 is a grid-like or rib-like structure composed of a plurality of transverse short reinforcing ribs and a longitudinal long reinforcing rib perpendicularly intersecting each other. The receiving part 1102 Located between the two third reinforcing ribs 1106, the second bracket connector 1103 is disposed on the side of the third reinforcing rib 1106 away from the bracket connection body 1105, specifically at the junction node where the long reinforcing rib and the short reinforcing rib are perpendicularly connected. This allows the second supporting heat-conducting part 21 of the supporting heat-conducting component 2 to be connected to the second supporting connector 11 through the second bracket connector 1103. This effectively disperses the stress and pressure generated during hot riveting to the entire reinforcing rib network and the bracket connection body 1105, avoiding plastic cracking or connection failure caused by stress concentration and ensuring the long-term stability of the connection.

[0076] Reference Figures 1-3 , Figure 6 In one embodiment, the second support connector 11 further includes a cover plate 112, which is located at the opening of the receiving hole 1104 and is detachably connected to the receiving portion 1102 and contacts the second tab connector 111.

[0077] In the above embodiment, the second support connector 11 further includes a cover plate 112. The cover plate 112 is a plastic or insulating component used to close the opening of the receiving hole 1104. In this embodiment, two cover plates 112 are provided, corresponding to the two end openings of the receiving hole 1104 respectively. The receiving hole 1104 accommodates a second electrode tab connector 111. The cover plate 112 is located outside the electrode tab 4, that is, after the electrode tab 4 is welded to the second electrode tab connector 111, the cover plate 112 is located on the side of the electrode tab 4 away from the second electrode tab connector 111. The cover plate 112 and the receiving part 1102 are connected by a detachable snap-fit ​​method, that is, the cover plate 112 is located on the top and bottom of the receiving part 1102. The device is designed with deformable plastic buckles at both ends, and corresponding slots are designed on the opening edge of the receiving part 1102. By pressing, the plastic buckles are inserted into the slots to achieve quick locking. This connection method can be installed and disassembled without tools. After assembly, the two cover plates 112 are respectively snapped into the openings at both ends of the receiving hole 1104, which securely seals the second electrode connector 111 in the receiving hole 1104, preventing it from being displaced, loosened, or subject to external contamination or short circuits during subsequent handling or use. In addition, because the gap between the two cells 5 is small, the cover plate 112 can effectively increase the creepage distance between the electrode 4 and the electrode 4 of the next cell 5.

[0078] Reference Figures 1-5 , Figures 7-8 The present invention also proposes a battery module 8, including the battery module 9 described in any of the above embodiments. There are multiple battery modules 9, and every two battery modules 9 form a group. The battery modules 9 in each group are in close contact with each other to form a first protective structure 6. The conductive connection components 1 included in each group of battery modules 9 are in close contact with each other to form a second protective structure 7. The first protective structure 6 and the second protective structure 7 are arranged with offset and staggered relative to each other.

[0079] In the above embodiments, the battery module 8 is composed of multiple battery modules 9 as described in the previous embodiments. The basic unit of the module is a set of battery modules 9, and each set of battery modules 9 consists of two battery modules 9 arranged opposite each other (such as face-to-face or back-to-back). Four battery cells 5 form one battery module 9. The battery module 8 is formed by stacking multiple sets of oppositely arranged battery modules 9 sequentially in the horizontal direction. Inside each set of battery modules, the two opposite battery modules 9 will come into contact with each other during assembly, so that the first support 101 included in each set of battery modules 9 is close to each other and tightly packed. The contact forms the first protective structure 6, that is, the boundary line of the physical contact between the two first supports 101 is represented as a straight line in the cross-sectional view, which is called the first protective structure 6; wherein, the stacking method of the battery modules 9 in the battery module 8 can be flexibly set, that is, they can be laid flat on the same horizontal plane, or they can be laid flat or stacked vertically, etc. If they are laid flat on the same horizontal plane, the adjacent sides of battery module A and battery module B are the "mutually close parts"; if they are laid flat, the corresponding parts of the upper and lower layers are the "mutually close parts"; if they are stacked vertically (i.e., attached) Figure 7 The adjacent end faces are referred to as "mutually close portions"; however, the "mutually close portions of each group of battery modules 9" vary depending on the stacking method. For example, when laid flat on the same horizontal plane, the sides of adjacent modules are in close contact to form the first protective structure; when stacked flat, the opposite faces of the upper and lower modules are in close contact to form the structure; when stacked vertically, the end faces of adjacent modules are in close contact to form the structure. This adapts to the protection requirements under different stacking scenarios. At the same time, the conductive connection components 1 included in these two battery modules 9 (especially the connection body 1030 in the first tab connector 103 on the first support connector 10) will also approach and contact each other. The connection bodies 1030 of the first tab connector 103 of the two opposing battery modules 9 in this group have different sizes: one single connection body 1030 is smaller, and the other is larger. When these two battery modules 9 are attached, The larger connecting body 1030 partially overlaps the support area where the smaller connecting body 1030 is located. This size difference causes the boundary line of the two connecting bodies 1030 to approach and contact each other to form another straight line in the cross-sectional view, which is called the second protective structure 7. Due to the different sizes of the connecting bodies 1030, the second protective structure 7 does not coincide with the first protective structure 6. The first protective structure 6 and the second protective structure 7 are not on the same straight line, but are staggered to form a misaligned spatial layout. This makes the contact surface and aluminum sheet welding surface between the two battery modules 9 staggered, thereby ensuring that even if welding slag falls during laser welding, it will be blocked by the first tab connector 103, protecting the cell 5. This ensures that the tab 4 will not be damaged when welding the tab 4 or welding other components to the connecting body 1030. At the same time, the module structure is more compact and the space utilization is optimized.

[0080] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A battery module, characterized in that, Includes conductive connection components, supporting heat-conducting components, and multiple battery cell components; The battery cell assembly is formed by connecting multiple battery cells in series, and each battery cell has a tab at its end; The battery cell assembly and the conductive connection assembly are respectively disposed on the supporting heat-conducting assembly. The conductive connection assembly is connected to the tab in a straight line, and the tab extends from the end of the battery cell to the connection position in a straight line.

2. The battery module according to claim 1, characterized in that, The supporting heat-conducting component includes a first supporting heat-conducting part, a second supporting heat-conducting part, and a third supporting heat-conducting part. The first supporting heat-conducting part and the third supporting heat-conducting part are disposed opposite to each other on the second supporting heat-conducting part. The battery cell assembly is located between the first supporting heat-conducting part and the third supporting heat-conducting part and is attached to the second supporting heat-conducting part.

3. The battery module according to claim 1, characterized in that, The conductive connection assembly includes a plurality of first support connectors. The first support connectors are disposed at the ends of the supporting heat-conducting assembly. Each first support connector includes a first bracket and a first tab connector. The first bracket is connected to the supporting heat-conducting assembly, and the first tab connector is disposed at the end of the first bracket away from the supporting heat-conducting assembly and is connected to the tab.

4. The battery module according to claim 3, characterized in that, The first bracket includes a bracket fixing part and an inlet part integrally connected to the bracket fixing part. The inlet part is provided with an inlet hole, and the first electrode connector is inserted into the inlet hole and connected to the inlet part.

5. The battery module according to claim 4, characterized in that, The bracket fixing part includes a plug-in block, a connecting plate and a plurality of first reinforcing ribs. The plug-in block is connected to the inlet part, the connecting plate is disposed at the end of the plug-in block away from the inlet part, and the plurality of first reinforcing ribs are spaced apart on the connecting plate.

6. The battery module according to claim 5, characterized in that, The plug block has a slot at one end away from the inlet, and the first reinforcing rib has a plurality of first bracket connectors at one end away from the connecting plate. The heat-conducting support assembly is plugged into the slot and connected to the first support connector through the first bracket connector.

7. The battery module according to claim 4, characterized in that, The first electrode connector includes a connecting body, a first connecting part, and a second connecting part, wherein the first connecting part and the second connecting part are disposed opposite to each other on the connecting body; The inlet portion includes an inlet bracket, and the inlet hole is disposed on the inlet bracket. The inlet hole includes a first inlet hole and a second inlet hole arranged at intervals. The first connecting portion is disposed through the first inlet hole, and the second connecting portion is disposed through the second inlet hole. The connecting body is connected to the inlet bracket.

8. The battery module according to claim 7, characterized in that, The inlet portion further includes a second reinforcing rib, which is connected to the side of the inlet bracket away from the bracket fixing portion, and the second reinforcing rib is located on the side of the first inlet hole away from the second inlet hole.

9. The battery module according to claim 3, characterized in that, The conductive connection assembly further includes a second support connector, which is disposed on the support heat conduction assembly and located between the oppositely disposed first support connectors. The second support connector is connected to the tabs of the battery cells connected in series, and the battery cell assemblies corresponding to the support heat conduction assembly are connected in parallel through the second support connector.

10. The battery module according to claim 9, characterized in that, The second support connector includes a second bracket and a second tab connector. The second bracket is connected to the support heat-conducting assembly, and the second tab connector is disposed on the second bracket and connected to the tab.

11. The battery module according to claim 10, characterized in that, The second support includes a support connecting part and a receiving part. The receiving part is connected to the support connecting part and has a through receiving hole. The second electrode connector is located in the receiving hole and is connected to the electrode.

12. The battery module according to claim 11, characterized in that, The bracket connection includes a bracket connection body and a plurality of third reinforcing ribs. The receiving part and the third reinforcing ribs are respectively disposed on the bracket connection body. The third reinforcing ribs are located on the side of the receiving part away from the receiving hole. A second bracket connector is disposed at the end of the third reinforcing rib away from the bracket connection body. The heat-conducting support assembly is connected to the second support connector through the second bracket connector.

13. The battery module according to claim 11, characterized in that, The second support connector further includes a cover plate located at the opening of the receiving hole and detachably connected to the receiving portion, in contact with the second electrode connector.

14. A battery module, characterized in that, The battery module includes any one of claims 1-13, wherein there are multiple battery modules, each pair of battery modules forms a group, the battery modules in each group are in close contact with each other to form a first protective structure, the conductive connection components included in each group of battery modules are in close contact with each other to form a second protective structure, and the first protective structure and the second protective structure are arranged in a staggered and offset manner.

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