Busbar structure, CCS assembly and battery module

Abstract

The utility model provides a kind of busbar structure, CCS assembly and battery module, busbar structure is used to carry out electric connection to multiple electric core, multiple electric core is arranged in multiple rows, each row of electric core includes N electric core along first direction arrangement, each column of electric core includes M electric core along second direction and staggered arrangement;Busbar structure makes multiple electric core constitute S group electric core branch series connection, and each group of electric core branch includes P electric circuit of parallel connection, wherein, M is greater than or equal to 2, N is greater than or equal to 3, P is greater than M.Through busbar structure, the electric connection of multiple rows of electric core is realized, and the circuit of P electric parallel connection in each group of S group electric core branch series connection is constituted, and P is greater than the number of each column of electric core (electric core row number) M.Under the premise of not increasing battery pack width, the number of electric parallel connection is increased from M to P, the number of electric parallel connection is improved, so as to improve battery module capacity and discharge capacity, better meet high-power scene demand.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to bus structure, CCS component and battery module. Background Technology

[0002] In related technologies, battery modules are assembled by combining multiple individual battery cells arranged in an array through series and parallel connections, and equipped with corresponding control and protection components. The electrical connection between the cells is achieved through a bus structure, specifically: the cells are connected in series in a straight line along the length of the battery module, and in parallel in an alternating manner along the width.

[0003] However, due to the limitations of battery pack space size, the capacity and discharge capability of battery modules cannot be effectively improved, making it difficult to meet the needs of high-power scenarios. Utility Model Content

[0004] The embodiments of this utility model provide a bus structure, a CCS module, and a battery module, which can improve the technical problem in related technologies that the capacity and discharge capability of battery modules cannot be effectively improved, making it difficult to meet the requirements of high-power scenarios.

[0005] In a first aspect, embodiments of the present invention provide a bus structure for electrically connecting multiple battery cells, wherein the multiple battery cells are arranged in multiple rows and columns, each row of battery cells includes N battery cells arranged along a first direction, and each column of battery cells includes M battery cells arranged along a second direction and staggered.

[0006] The bus structure enables multiple battery cells to form S groups of battery cell branches connected in series, and each group of battery cell branches includes P battery cells connected in parallel, where M≥2, N≥3, and P>M.

[0007] In one embodiment, S > N / 2.

[0008] In one embodiment, the bus structure includes a negative busbar, a positive busbar, and a connecting busbar disposed between the negative busbar and the positive busbar, arranged along a first direction.

[0009] The connecting bar is used to connect at least three rows of the battery cells. The connecting bar includes P first conductive units for connecting to the positive electrode of the battery cells and P second conductive units for connecting to the negative electrode of the battery cells.

[0010] In one embodiment, the connecting row is used to connect three columns of the battery cells, wherein X first conductive units are used to connect the first column of the battery cells, and the remaining first conductive units are used to connect the second column of the battery cells; Y second conductive units are used to connect the third column of the battery cells, and the remaining second conductive units are used to connect the second column of the battery cells, wherein X≤M, Y≤M, and 2P-XY=M.

[0011] In one embodiment, the connecting bar is used to connect four columns of the battery cells, wherein X first conductive units are used to connect the first column of the battery cells, Y second conductive units are used to connect the fourth column of the battery cells, and the remaining first conductive units and the remaining second conductive units are used to connect the second column of the battery cells and the third column of the battery cells, wherein X≤M, Y≤M, and 2P-XY=2M.

[0012] In one embodiment, the connecting bar is used to connect four adjacent cells in the first row of cells, wherein two first conductive units are used to connect two adjacent cells, and two second conductive units are used to connect the other two adjacent cells.

[0013] In one embodiment, the connecting bar includes a main body and a first antennae and a second antennae extending from opposite sides of the main body, respectively. The end of the first antennae facing away from the main body forms the first conductive unit, and the end of the second antennae facing away from the main body forms the second conductive unit.

[0014] In one embodiment, the main body portion is provided with M of the first conductive units.

[0015] In one embodiment, the connection end between the first antennae and the main body is offset from the first conductive unit disposed on the main body; and / or,

[0016] The second antennae are connected to the first conductive unit of the main body.

[0017] In one embodiment, each of the first antennae is disposed at a first angle to the first direction; and / or,

[0018] A portion of the second antennae extends along the first direction, and a portion of the second antennae is set at a second angle to the first direction.

[0019] In one embodiment, the first included angle is between 25° and 35°; and / or, the second included angle is between 25° and 35°.

[0020] In one embodiment, the ratio of the width of the first antennae to the diameter of the battery cell is between 1 / 3 and 1 / 2; and / or, the ratio of the width of the second antennae to the diameter of the battery cell is between 1 / 3 and 1 / 2.

[0021] In one embodiment, the first conductive unit and the second conductive unit have a height difference in a third direction.

[0022] In one embodiment, the second antenna portion further includes a connecting segment connecting the main body portion and a bent segment connecting the second conductive unit. The connecting segment and the bent segment are connected, and the bent segment is inclined. On the plane of the busbar structure, the end of the bent segment connected to the second conductive unit is closer to the second conductive unit than the end of the bent segment connected to the connecting segment.

[0023] In one embodiment, the connecting segment is provided with a through hole, so that the connecting segment forms a fused structure connecting the first conductive unit and the second conductive unit.

[0024] In one embodiment, there are multiple connecting rows arranged along a first direction, and the projections of two adjacent connecting rows on the plane of the busbar structure are rotated around an axis extending along the first direction.

[0025] In one embodiment, S < N.

[0026] Secondly, embodiments of this utility model provide a CCS component, including the bus structure described in any of the above claims.

[0027] Thirdly, embodiments of this utility model provide a battery module, including multiple battery cells and the CCS component as described above.

[0028] The beneficial effects of the embodiments of this utility model are as follows:

[0029] In embodiments of this invention, without altering the arrangement and number of battery cells, a bus structure is used to achieve efficient electrical connection of multiple rows and columns of cells, forming a circuit with S groups of cell branches connected in series and P cells in parallel in each group, where P is greater than the number of cells per column (number of cell rows) M. This design increases the number of parallel cells from M to P without increasing the width of the battery pack (second direction), thereby improving the battery module capacity and discharge capability, and better meeting the needs of high-power scenarios. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a three-dimensional schematic diagram of a battery module provided in an embodiment of this utility model;

[0032] Figure 2 yes Figure 1 A schematic diagram showing the cell arrangement of the battery module in the diagram;

[0033] Figure 3 yes Figure 1 A schematic diagram of the parallel connection of battery cells in the battery module;

[0034] Figure 4 yes Figure 3 A top-view diagram of a partial structure of the battery module in the diagram;

[0035] Figure 5 yes Figure 4 A schematic diagram of the structure of a connecting row;

[0036] Figure 6 yes Figure 1 A partially enlarged schematic diagram of the battery module in the diagram;

[0037] Figure 7 yes Figure 6 A side view of one of the second antennae;

[0038] Figure 8 This is a three-dimensional schematic diagram of another battery module provided in an embodiment of this utility model;

[0039] Figure 9 yes Figure 8 A schematic diagram showing the cell arrangement of the battery module in the diagram;

[0040] Figure 10 yes Figure 8 A schematic diagram of the parallel connection of battery cells in the battery module;

[0041] Figure 11 yes Figure 8 A top-view diagram of a partial structure of the battery module.

[0042] Figure label:

[0043] 1000, Battery module; 100, Busbar structure; 10, Connecting busbar; 1, First conductive unit; 2, Second conductive unit; 3, Main body; 4, First antenna; 5, Second antenna; 51, Connecting section; 511, Through hole; 52, Bending section; 20, Negative busbar; 30, Positive busbar; 200, Battery cell. Detailed Implementation

[0044] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model. In addition, it should be understood that the specific embodiments described herein are only for illustration and explanation of the present utility model and are not intended to limit the present utility model. In the present utility model, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in actual use or operation, specifically the drawing directions in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0045] This application proposes a bus structure. Figures 1 to 11 These are some embodiments of this application.

[0046] Please see Figures 1 to 3 or Figures 8 to 10 In some embodiments of this application, the bus structure 100 is used to electrically connect multiple battery cells 200. The multiple battery cells 200 are arranged in multiple rows and columns. Each row of battery cells 200 includes N battery cells 200 arranged along a first direction, and each column of battery cells 200 includes M battery cells 200 arranged in a staggered manner along a second direction. The bus structure 100 enables the multiple battery cells 200 to form S groups of battery cell 200 branches connected in series, and each group of battery cell 200 branches includes P circuits of battery cells 200 connected in parallel, where M≥2, N≥3, and P>M. See details. Figure 2 and Figure 3 or Figure 9 and Figure 10 , Figure 2 and Figure 9 Each row of battery cells is connected by lines. Figure 3 and Figure 10 The parallel battery cells are connected by lines. Figure 2 and Figure 3 In the diagram, multiple battery cells 200 are arranged in six rows and twelve columns, and a nine-parallel, eight-series circuit is constructed through a bus structure 100, i.e., M=6, N=12, P=9, S=8. Figure 9 and Figure 10In the schematic diagram, multiple battery cells 200 are arranged in seven rows and twenty-two columns, and a circuit with nine parallel and seventeen series connections is constructed through the busbar structure 100, that is, M = 7, N = 22, P = 9, and S = 17.

[0047] In the technical solution of the present application, without changing the arrangement mode and quantity of the battery cells 200, the high-efficiency electrical connection of the battery cells 200 in multiple rows and columns is realized through the busbar structure 100, and a circuit is formed in which S groups of battery cell 200 branches are connected in series and P battery cells 200 in each group are connected in parallel, where P is greater than the number of battery cells 200 in each column (the number of rows of the battery cells 200) M. This design increases the parallel quantity of the battery cells 200 from M to P without increasing the width of the battery pack (the second direction), thereby increasing the parallel quantity of the battery cells 200, improving the capacity and discharge ability of the battery module 1000, and better meeting the requirements of high-power scenarios.

[0048] It can be understood that when there are P battery cells 200 connected in parallel in each battery cell 200 branch and P > M, it is equivalent to dispersing the series-connected battery cells 200 into more parallel branches, thereby reducing the number of battery cells 200 in each parallel branch (that is, S < N). Due to the increase in the number of parallel branches, the current can be more evenly distributed on more parallel paths. Reducing the number of battery cells 200 in a single parallel branch can effectively reduce the risk of local current overload, and further reduce local heat accumulation, improving the safety and stability of the battery module 1000. In addition, by reducing the number of series connections of the battery cells 200, the total voltage of the battery module 1000 is reduced, so that it can better adapt to low-voltage application scenarios. As the number of series connections of the battery cells 200 decreases, the number of series-connected battery cells 200 that the battery management system (BMS) needs to manage also decreases, and the complexity of the balancing circuit is simplified. This not only reduces the difficulty of system design, but also improves the efficiency and reliability of balancing management. In summary, by increasing the parallel quantity P and reducing the series quantity S, this solution realizes multiple advantages such as optimized current distribution, flexible adaptation of the voltage platform, and simplified balancing management, significantly improving the overall performance and practicality of the battery module 1000.

[0049] In some embodiments, S > N / 2. In these embodiments, it is specified that S > N / 2, that is, the number of series connections S of the battery cells 200 is greater than half of the number of columns N of the battery cells 200 (for example, as Figures 1 to 3 shown in the schematic diagram, S = 8 > N / 2 = 6, Figures 9 to 10Illustratively, S = 17 > N / 2 = 11), to prevent the voltage from being too low due to excessive reduction of the number of series connections. For example, when S < N / 2, forming 10 groups of series-connected battery cell 200 branches with 22 columns of battery cells 200 may not meet the application requirements; through this design, it is ensured that the total voltage of the module remains within a reasonable range, meeting the requirements of most application scenarios, while optimizing the energy density, reducing the complex connection paths caused by excessive parallel connections, improving the uniformity of current distribution, and reducing the risk of local heat accumulation, thereby significantly improving the overall performance and practicality of the battery module 1000.

[0050] Please refer to Figures 1 to 3 or Figures 8 to 10 , in some embodiments, the busbar structure 100 includes a negative busbar main body 20, a positive busbar main body 30 arranged along a first direction, and a connection row 10 disposed between the negative busbar main body 20 and the positive busbar main body 30; the connection row 10 is used to connect at least three columns of battery cells 200, and the connection row 10 includes P first conductive units 1 for connecting to the positive electrodes of the battery cells 200 and P second conductive units 2 for connecting to the negative electrodes of the battery cells 200. In these embodiments, the connection row 10 is extended from the conventional method of only connecting two columns of battery cells 200 to connecting at least three columns of battery cells 200, and P first conductive units 1 and P second conductive units 2 are used to realize parallel connection of P battery cell 200 branches, with two battery cells 200 in series on each battery cell 200 branch. This design increases the number of parallel-connected battery cells 200 by increasing the span of the connection row 10, significantly improving the total capacity and discharge capacity of the battery module 1000; optimizing the current distribution, reducing the risk of local overload, reducing the possibility of local heat accumulation, and improving the safety and stability of the system.

[0051] In some embodiments, see Figure 4 or Figure 11Connecting row 10 is used to connect three columns of battery cells 200. X first conductive units 1 are used to connect the first column of battery cells 200, and the remaining first conductive units 1 connect to a portion of the second column of battery cells 200. Y second conductive units 2 are used to connect the third column of battery cells 200, and the remaining second conductive units 2 connect to a portion of the second column of battery cells 200, where X ≤ M, Y ≤ M, and 2P - XY = M. In these embodiments, connecting row 10 is used to connect three columns of battery cells 200, where X first conductive units 1 are used to connect the first column of battery cells 200, and the remaining (PX) first conductive units 1 connect to a portion of the second column of battery cells 200; Y second conductive units 2 are used to connect the third column of battery cells 200, and the remaining (PY) second conductive units 2 connect to a portion of the second column of battery cells 200, satisfying X ≤ M, Y ≤ M, and 2P - X - Y = M. This means that all battery cells 200 in the second column are connected to connecting row 10, ensuring that no battery cell 200 within the span of connecting row 10 is missed. Furthermore, since the first and third rows of cells 200 are located near the edge of the span of the connecting busbar 10, the first row of cells 200 can also connect to adjacent connecting busbars 10 (if there are multiple connecting busbars 10) or directly connect to the negative busbar 20. Similarly, the third row of cells 200 can connect to adjacent connecting busbars 10 (if there are multiple connecting busbars 10) or directly connect to the positive busbar 30. By rationally allocating the connection methods of the first conductive unit 1 and the second conductive unit 2, the spatial layout of the connecting busbar 10 is fully utilized, achieving effective connection of the relevant cells 200, improving space utilization and energy density, and further enhancing the overall performance of the battery module 1000. Specifically, with... Figure 4 Taking the leftmost connecting row 10 as an example, six first conductive units 1 are used to connect the first column of cells 200, and the remaining three first conductive units 1 connect the second column of cells 200. Six second conductive units 2 are used to connect the third column of cells 200, and the remaining three second conductive units 2 connect the second column of cells 200. That is, X=6=M, Y=6=M, P=9, which satisfies 2P-XY=M. All cells 200 in the second column are connected to the connecting row 10. Figure 11 In the middle, taking the rightmost seven connected rows 10 as an example, counting from right to left, the right first, right second, right fifth, and right sixth can also connect to three columns of 200 cells respectively, and satisfy X ≤ M, Y ≤ M and 2P - X - Y = M, which will not be elaborated further.

[0052] In some embodiments, see Figure 4 or Figure 11Connecting unit 10 is used to connect four columns of battery cells 200. X first conductive units 1 are used to connect the first column of battery cells 200, Y second conductive units 2 are used to connect the fourth column of battery cells 200, and the remaining first conductive units 1 and the remaining second conductive units 2 are used to connect the second and third columns of battery cells 200, where X ≤ M, Y ≤ M, and 2P - XY = 2M. In these embodiments, connecting unit 10 is used to connect four columns of battery cells 200, where X first conductive units 1 are used to connect the first column of battery cells 200, Y second conductive units 2 are used to connect the fourth column of battery cells 200, and the remaining (PX) first conductive units 1 and (PY) second conductive units 2 are used to connect the second and third columns of battery cells 200, respectively. This design satisfies X ≤ M, Y ≤ M, and 2P - X - Y = 2M, meaning that all battery cells 200 in the second and third columns are connected to connecting unit 10, ensuring that no battery cell 200 within the span of connecting unit 10 is missed. Furthermore, since the first and fourth rows of cells 200 are located near the edge of the span of the connecting busbar 10, the first row of cells 200 can also connect to adjacent connecting busbars 10 (if there are multiple connecting busbars 10) or directly connect to the negative busbar 20. Similarly, the fourth row of cells 200 can connect to adjacent connecting busbars 10 (if there are multiple connecting busbars 10) or directly connect to the positive busbar 30. By rationally allocating the connection methods of the first conductive unit 1 and the second conductive unit 2, the spatial layout of the connecting busbar 10 is fully utilized, achieving effective connection of the relevant cells 200, improving space utilization and energy density, and further enhancing the overall performance of the battery module 1000. Specifically, with... Figure 4 Taking the second connecting row 10 on the left as an example, this connecting row 10 connects four columns of cells 200: the second, third, fourth, and fifth from the left. Three first conductive units 1 are used to connect the first column of cells 200 (the second column of cells 200 from the left), and three second conductive units 2 are used to connect the fourth column of cells 200 (the fifth column of cells from the left). The remaining six first conductive units 1 and the remaining six second conductive units 2 are connected to the second column of cells 200 (the third column of cells 200 from the left) and the third column of cells 200 (the fourth column of cells 200 from the left). That is, X=3<M, Y=3<M, P=9, which satisfies 2P-XY=2M. All cells 200 in the second and third columns are connected to the connecting row 10 (the third and fourth columns of cells 200 are all connected to this connecting row 10). Figure 11 In the middle, the seven rightmost cells are connected to row 10. Counting from right to left, the third, fourth, and seventh cells from the right can also connect to four rows of cells 200 respectively, and satisfy X ≤ M, Y ≤ M and 2P - X - Y = 2 M, which will not be elaborated further.

[0053] Understandably, see Figure 4 or Figure 11P>M, and the connecting row 10 is used to connect at least three rows of cells 200. This means that in some rows of cells 200, at least three adjacent cells 200 in the same row of cells 200 will be connected to the same connecting row 10.

[0054] In some embodiments, the connecting row 10 is used to connect four adjacent cells 200 in the first row of cells 200 (see...). Figure 11 The rightmost seven connecting rows 10 (counting from right to left, the third connecting row 10 from the right) are arranged such that two first conductive units 1 connect two adjacent cells 200, and two second conductive units 2 connect another two adjacent cells 200. In these embodiments, it is understood that one connecting row 10 connects four adjacent cells 200 in the same cell 200 row, and connects two adjacent cells 200 through two first conductive units 1 and another two adjacent cells 200 through two second conductive units 2, forming two parallel cell 200 branches to ensure effective connection of the cells 200. Because it connects four adjacent cells 200, the arrangement of the two first conductive units 1 and the second conductive units 2 is relatively compact, limiting this cell 200 row to the first row, located at the edge of the array of multiple cells 200, which helps simplify the connection structure and improve space utilization. This design not only improves the uniformity of current distribution and reduces the risk of local overload, but also enhances the safety and stability of the system. In addition, this layout optimizes the use of busbar space, reduces manufacturing complexity and cost, and further improves the overall performance of the battery module 1000.

[0055] In some embodiments, see Figure 5The connecting strip 10 includes a main body 3 and a first antennae 4 and a second antennae 5 extending from opposite sides of the main body 3. The end of the first antennae 4 facing away from the main body 3 forms a first conductive unit 1, and the end of the second antennae 5 facing away from the main body 3 forms a second conductive unit 2. In these embodiments, the connecting strip 10 includes a main body 3 and a first antennae 4 and a second antennae 5 extending from opposite sides of the main body 3. The end of the first antennae 4 facing away from the main body 3 forms the first conductive unit 1, and the end of the second antennae 5 facing away from the main body 3 forms the second conductive unit 2. The main body 3 can extend in an alternating bend along a second direction, and may have a partial bend along a first direction at its starting end. However, regardless of how the main body 3 is bent, the first antennae 4 and the second antennae 5 are located on opposite sides of the width of the main body 3 (the direction intersecting the extension direction), thereby forming a first conductive unit 1 with a high potential and a second conductive unit 2 with a low potential, respectively. This design, with the first antennae 4 and the second antennae 5 branching off on both sides of the main body 3, avoids interference between conductive units, ensures effective connection of the related cells 200, and improves the safety and stability of the system. Specifically, although the main body 3 may bend or curve along a complex path, it always maintains a single main line structure without additional branch structures. That is, a continuous line (whether a broken line or a curve) can be drawn along the extension direction of the main body 3, with the first antennae 4 and the second antennae 5 located on either side of this line. This design not only simplifies the overall structure of the connection row 10 but also ensures uniform current distribution, reduces the risk of local overload, and improves space utilization and manufacturing efficiency, further enhancing the overall performance of the battery module 1000.

[0056] Understandably, the first conductive unit 1 can be formed entirely from the end of the first antennae 4 that is away from the main body 3, that is, P first antennae 4 are provided to form P first conductive units 1.

[0057] In some embodiments, see Figure 5The main body 3 is provided with M first conductive units 1. In these embodiments, the main body 3 is provided with M first conductive units 1, which means that out of P first conductive units 1, M first conductive units 1 are directly formed in the main body 3, rather than all of them being provided by the first antennae 4. By integrating some of the first conductive units 1 into the main body 3, the need for independent first antennae 4 is reduced, making the structure of the connection row 10 more compact and simple. As the core structure of the connection row 10, the meandering or bending design of the main body 3 can flexibly adapt to the layout of the battery cell 200. The M first conductive units 1 are arranged on the main body 3, so that the main body 3 roughly runs through the entire connection row 10, enabling a more even distribution of the current path. This design not only simplifies the structure but also optimizes space utilization and improves the safety and stability of the system. In addition, reducing the number of first antennae 4 means reducing the branch points of the conductive path, thereby reducing the risk of local heat accumulation caused by current concentration. This design helps to improve thermal management performance and extend the service life of the battery module 1000. In summary, by integrating M first conductive units 1 into the main body 3, the number of first antennae 4 is reduced, which not only simplifies the structure of the connection row 10, but also optimizes space utilization, current distribution and thermal management performance, further enhancing the overall performance of the battery module 1000.

[0058] In some embodiments, see Figure 5 In these embodiments, the connection end of the first antennae 4 to the main body 3 is offset from the first conductive unit 1 of the main body 3. The first conductive unit 1 is formed at the end of the first antennae 4 facing away from the main body 3, while the main body 3 itself also has a first conductive unit 1. By offsetting the connection end of the first antennae 4 to the main body 3 from the first conductive unit 1 on the main body 3, it is ensured that these two first conductive units 1 are connected to the positive terminals of different cells 200 respectively. This offset arrangement avoids interference between the two first conductive units 1, improves the flexibility and adaptability of the connection, and makes the connection between the cells 200 more efficient. The offset design allows the first antennae 4 and the first conductive unit 1 on the main body 3 to function independently, avoiding spatial conflicts. This design makes full use of the space of the connection row 10, improving the space utilization and structural compactness of the battery module 1000.

[0059] In some embodiments, see Figure 5The second antennae 5 are connected to the first conductive unit 1 of the main body 3. In these embodiments, the second antennae 5 has a second conductive unit 2 at one end facing away from the main body 3, while its other end is directly connected to the first conductive unit 1 of the main body 3. This connection method allows current to flow directly between the first conductive unit 1 of the main body 3 and the second conductive unit 2 of the second antennae 5 along the extension direction of the second antennae 5, thereby significantly shortening the current path. Shortening the path not only reduces resistance but also reduces energy loss, improving the overall efficiency of the battery module 1000. By directly connecting the second antennae 5 to the first conductive unit 1 of the main body 3, current can flow more efficiently from high potential (positive electrode) to low potential (negative electrode), ensuring uniform current distribution, reducing the risk of local overload, and improving the safety and stability of the system.

[0060] In some embodiments, see Figure 5 Each first antenna 4 is set at a first angle to a first direction. In these embodiments, by tilting the first antenna 4 (i.e., at a first angle to the first direction), the first antenna 4 can intersect with a row of battery cells 200. This allows the first conductive unit 1 on the first antenna 4 to connect to two battery cells 200 located in the same row, respectively, with the first conductive unit 1 on the main body 3, thereby realizing parallel connection of battery cells 200 across columns. This design increases the number of parallel battery cells 200, significantly improving the total capacity and discharge capability of the battery module 1000, and also optimizes the connection method between battery cells 200, avoiding connection conflicts caused by overlapping positions, and improving connection efficiency and reliability. Furthermore, it should be noted that the first antennae 4 is set at a first angle to the first direction, which means that although the main body 3 may bend or curve along a complex path, it always maintains a single main line structure without any additional branch structures. A continuous line (whether a broken line or a curve) can be drawn along the extension direction of the main body 3, so that the first antennae 4 and the second antennae 5 are located on both sides of this line, and the first antennae 4 itself does not bend or curve, making the structure relatively simple, reducing complexity and manufacturing costs, and providing support for the overall performance improvement of the battery module 1000.

[0061] In some embodiments, see Figure 5A portion of the second antennae 5 extends along a first direction, while another portion forms a second angle with the first direction. In these embodiments, by connecting the second antennae 5 to the first conductive unit 1 of the main body 3 and extending it in a single direction (whether along the first direction or at a second angle), the simplicity and efficiency of the structure are ensured. This straight-line extension design allows the second antennae 5 to directly connect to the negative electrode of the target cell 200, thereby significantly shortening the current path, reducing resistance and energy loss, and improving the overall efficiency of the battery module 1000. Furthermore, by having a portion of the second antennae 5 extend along the first direction and another portion form a second angle with the first direction, this multi-angle path design provides greater flexibility for connecting the target cell 200, enabling cross-row and cross-column connections, increasing the adaptability and parallel capacity of the cell 200 connections. At the same time, this design fully utilizes the spatial layout of the connection row 10, avoids redundant structures, makes the battery module 1000 more compact, and further improves space utilization and energy density.

[0062] In some embodiments, see Figure 5 The first included angle is between 25° and 35°. In these embodiments, the connection end between the first antenna portion 4 and the main body portion 3 is offset from the first conductive unit 1 disposed on the main body portion 3. When the first included angle between the first antenna portion 4 and the first direction (the extension direction of the row of battery cells 200) is between 25° and 35°, it can be ensured that when the first antenna portion 4 intersects with a row of battery cells 200, the first conductive unit 1 can correspond to a battery cell 200. This facilitates the alignment and connection of the first conductive unit 1 with the positive electrode of the battery cell 200, ensuring efficient connection between the first antenna portion 4 and the battery cell 200, and reducing alignment difficulties or poor contact problems caused by unsuitable angles.

[0063] In some embodiments, see Figure 5 The second included angle is between 25° and 35°. In these embodiments, the second contact portion 5 is connected to the first conductive unit 1 of the main body portion 3. When the first included angle between the second contact portion 5 and the first direction (the extension direction of the row of battery cells 200) is between 25° and 35°, it can be ensured that when the second contact portion 5 intersects with a row of battery cells 200, the second conductive unit 2 can correspond to a battery cell 200. This facilitates the alignment and connection of the second conductive unit 2 with the negative electrode of the battery cell 200, ensuring efficient connection between the second contact portion 5 and the battery cell 200, and reducing alignment difficulties or poor contact problems caused by unsuitable angles.

[0064] In some embodiments, the ratio of the width of the first antenna portion 4 to the diameter of the cell 200 is between 1 / 3 and 1 / 2. In these embodiments, if the width of the first antenna portion 4 is too large (e.g., exceeding 1 / 2 of the diameter of the cell 200), when the cells 200 are closely arranged, the first antenna portion 4 will occupy too much space, easily interfering with other components (such as the second antenna portion 5 of the adjacent connecting row 10), increasing layout difficulty and reducing space utilization. If the width of the first antenna portion 4 is too small (e.g., less than 1 / 3 of the diameter of the cell 200), its cross-sectional area will be insufficient, thereby reducing the current carrying capacity, increasing the risk of resistance and heat accumulation, and may also lead to insufficient mechanical strength, making it prone to deformation or damage during assembly or use. Controlling the width of the first antenna portion 4 between 1 / 3 and 1 / 2 of the diameter of the cell 200 can significantly reduce the space occupied while ensuring functionality, avoiding interference problems, and making the battery module 1000 structure more compact. At the same time, this design ensures both sufficient cross-sectional area to support efficient current transmission and adequate mechanical strength, improving system reliability and durability. Furthermore, the moderate width helps to distribute current evenly, reduce the formation of localized hot spots, improve thermal management performance, and enhance manufacturing and assembly efficiency.

[0065] In some embodiments, the ratio of the width of the second antenna portion 5 to the diameter of the cell 200 is between 1 / 3 and 1 / 2. In these embodiments, if the width of the first antenna portion 4 is too large (e.g., exceeding 1 / 2 of the diameter of the cell 200), the second antenna portion 5 will occupy too much space when the cells 200 are closely arranged, easily interfering with other components (such as the first antenna portions 4 of adjacent connecting rows 10), increasing layout difficulty and reducing space utilization. If the width of the second antenna portion 5 is too small (e.g., less than 1 / 3 of the diameter of the cell 200), its cross-sectional area will be insufficient, thereby reducing the current carrying capacity, increasing the risk of resistance and heat accumulation, and may also lead to insufficient mechanical strength, making it prone to deformation or damage during assembly or use. Controlling the width of the second antenna portion 5 to between 1 / 3 and 1 / 2 of the diameter of the cell 200 can significantly reduce space occupation while ensuring functionality, avoiding interference problems, and making the battery module 1000 structure more compact. At the same time, this design ensures both sufficient cross-sectional area to support efficient current transmission and adequate mechanical strength, improving system reliability and durability. Furthermore, the moderate width helps to distribute current evenly, reduce the formation of localized hot spots, improve thermal management performance, and enhance manufacturing and assembly efficiency.

[0066] In some embodiments, see Figure 6 and Figure 7The first conductive unit 1 and the second conductive unit 2 have a height difference in a third direction (the height direction of the battery module 1000). This design, by setting a height difference in the height direction, can better adapt to the physical layout differences of the positive and negative electrodes of the battery cell 200. Specifically, the negative electrode of the battery cell 200 is usually located on the end face of the battery cell 200, while the positive electrode of the battery cell 200 includes the terminal post on the end face of the battery cell 200, and the positive terminal post usually has a certain height difference relative to the negative terminal face. The height difference design of the first conductive unit 1 and the second conductive unit 2 in the third direction can ensure that they are precisely connected to the positive terminal post and the negative terminal face respectively, reducing the need for additional connection components and simplifying the structural design. At the same time, the height difference design improves the reliability and stability of the connection, reduces contact problems caused by forced adjustment of position, and improves thermal management performance, reducing the risk of local heat accumulation.

[0067] In some embodiments, see Figure 6 and Figure 7 The second antenna portion 5 also includes a connecting segment 51 connecting to the main body portion 3 and a bent segment 52 connecting to the second conductive unit 2. The connecting segment 51 and the bent segment 52 are connected, and the bent segment 52 is inclined. On the plane of the busbar structure 100, the end of the bent segment 52 connected to the second conductive unit 2 is closer to the second conductive unit 2 than the end of the bent segment 52 connected to the connecting segment 51. In these embodiments, by forming a height difference on the second antenna portion 5, it is not only easy to form, but also achieves a height difference without increasing manufacturing complexity, adapting to different positions of the positive and negative electrodes of the battery cell 200. Moreover, the height difference is mainly concentrated in the bent segment 52 of the second antenna portion 5, with little impact on the overall structure, maintaining the original layout of the main body portion 3 and other parts, and reducing the complexity and risk caused by structural adjustments. The bent segment 52 is inclined and forms an obtuse angle bend, which not only helps the smooth transmission of current, but also provides a certain buffering capacity, reduces stress concentration, better absorbs and disperses stress, reduces the risk of damage, and improves the reliability and durability of the system. In addition, the design of the bending section 52 enhances the assembly flexibility, allowing the second antennae 5 to be flexibly adjusted to adapt to the battery cells 200 in different positions. Especially when the battery cells 200 are arranged in a relatively compact manner or have slight deviations, this design can better adapt to the actual installation environment and improve the flexibility and accuracy of assembly.

[0068] In some embodiments, see Figure 6The connecting segment 51 is provided with a through hole 511, so that the connecting segment 51 forms a fusible structure connecting the first conductive unit 1 and the second conductive unit 2. In these embodiments, the connecting segment 51 is provided with a through hole 511 to form a weak area. When the current passing through exceeds the safe current, the weak area will break, thereby cutting off the circuit connection between two adjacent individual cells 200. This design can provide timely short-circuit protection when a short circuit occurs in an individual cell 200, preventing the entire battery module 1000 from being damaged due to overcurrent. Secondly, by providing a through hole 511 in the connecting segment 51, a stress-relieving notch is formed, which helps to alleviate thermal stress caused by temperature changes. This can reduce the shear force fluctuation of the connection interface of the battery module 1000 under temperature difference cycling of 10-80℃ by 45%, significantly improving the stability and reliability of the battery module 1000 under different environmental conditions and reducing the risk of failure due to thermal stress.

[0069] In some embodiments, see Figures 2 to 4 Multiple connecting rows 10 are provided, arranged along a first direction. The projections of two adjacent connecting rows 10 onto the plane of the busbar structure 100 are rotated around an axis extending along the first direction. In these embodiments, by reducing the types of connecting rows 10, manufacturing costs and complexity are significantly reduced. Specifically, the connecting rows 10 have the same shape and size, and can meet the needs of different positions simply by rotating them. When there is a height difference between the first conductive unit 1 and the second conductive unit 2, the design of two adjacent connecting rows 10 can be generated simply by adjusting the direction of the bending segment 52 of the second antenna portion 5 (such as bending upwards or downwards). This means that even if there is a height difference, only two types of connecting rows 10 are needed to meet the requirements, further reducing the complexity of design and manufacturing. In addition, since the connecting rows 10 have the same shape and size, there is no need to distinguish between complex types during assembly; they can be installed simply according to the rotation direction. This design not only improves assembly efficiency and reduces quality problems caused by incorrect assembly, but also enhances the flexibility and adaptability of the system. Meanwhile, the flip-over arrangement of adjacent connecting rows 10 makes full use of the space layout of the battery module 1000, making the overall structure more compact and further improving space utilization and energy density. The flip-over design also enhances the system's rhythm and aesthetics, and helps to evenly distribute current paths, reducing the risk of localized overload and improving system stability and reliability. Furthermore, the rational layout helps improve heat dissipation, preventing excessive heat concentration in any one area, thereby improving thermal management performance and extending the lifespan of the battery module 1000.

[0070] This application also provides a CCS component, including a bus structure 100, the structure of which is as described above. Since this CCS component adopts all the technical solutions of all the above embodiments, it has at least the beneficial effects brought by the technical solutions of the above embodiments, which will not be described in detail here.

[0071] This application also provides a battery module 1000, including multiple battery cells 200 and a CCS assembly. The structure of the CCS assembly is as described above. Since the battery module 1000 adopts all the technical solutions of the above embodiments, it has at least the beneficial effects brought by the technical solutions of the above embodiments, which will not be described in detail here.

[0072] This application also proposes a battery pack, which includes a thermal management system (CCS) component, the structure of which is as described above. Since this battery pack employs all the technical solutions of the above embodiments, it at least possesses the beneficial effects brought about by the technical solutions of the above embodiments, and will not be elaborated upon further here.

[0073] This application also proposes an electrical device, which includes a battery pack, the structure of which is as described above. Since this electrical device employs all the technical solutions of the above embodiments, it at least possesses the beneficial effects brought about by the technical solutions of the above embodiments, which will not be elaborated upon further here.

[0074] Electrical equipment can be vehicles, energy storage power supplies, consumer electronics, medical equipment, or smart cities, etc., and this disclosure does not make any specific limitations.

[0075] The embodiments of this utility model have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this utility model. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A bus structure for electrically connecting multiple battery cells, wherein the multiple battery cells are arranged in multiple rows and columns, each row of the battery cells includes N battery cells arranged along a first direction, and each column of the battery cells includes M battery cells arranged in a staggered manner along a second direction, characterized in that, The bus structure enables multiple battery cells to form S groups of battery cell branches connected in series, and each group of battery cell branches includes P battery cells connected in parallel, where M≥2, N≥3, and P>M.

2. The busbar structure of claim 1, wherein, S>N / 2.

3. The busbar structure of claim 2, wherein, The busbar structure includes a negative busbar, a positive busbar, and a connecting busbar arranged along a first direction; The connecting bar is used to connect at least three rows of the battery cells. The connecting bar includes P first conductive units for connecting to the positive electrode of the battery cells and P second conductive units for connecting to the negative electrode of the battery cells.

4. The busbar structure of claim 3, wherein, The connecting bar is used to connect three columns of the battery cells, wherein X first conductive units are used to connect the first column of the battery cells, and the remaining first conductive units are used to connect the second column of the battery cells; Y second conductive units are used to connect the third column of the battery cells, and the remaining second conductive units are used to connect the second column of the battery cells, wherein X≤M, Y≤M, and 2P-XY=M.

5. The busbar structure of claim 3, wherein, The connecting bar is used to connect four columns of the battery cells, wherein X first conductive units are used to connect the first column of the battery cells, Y second conductive units are used to connect the fourth column of the battery cells, and the remaining first conductive units and the remaining second conductive units are used to connect the second column of the battery cells and the third column of the battery cells, wherein X≤M, Y≤M, 2P-XY=2M.

6. The busbar structure of claim 5, wherein, The connecting bar is used to connect four adjacent cells in the first row of cells, wherein two first conductive units are used to connect two adjacent cells, and two second conductive units are used to connect the other two adjacent cells.

7. The busbar structure of claim 3, wherein, The connecting bar includes a main body and a first antennae and a second antennae extending from opposite sides of the main body. The end of the first antennae facing away from the main body forms the first conductive unit, and the end of the second antennae facing away from the main body forms the second conductive unit.

8. The busbar structure of claim 7, wherein, The main body is provided with M of the first conductive units.

9. The busbar structure of claim 8, wherein, The connection end between the first antennal portion and the main body portion is offset from the first conductive unit disposed on the main body portion; and / or. The second antennae are connected to the first conductive unit of the main body.

10. The busbar structure of claim 9, wherein, Each of the first antennae is positioned at a first angle to the first direction; and / or A portion of the second antennae extends along the first direction, and a portion of the second antennae is set at a second angle to the first direction.

11. The busbar structure of claim 10, wherein, The first included angle is between 25° and 35°; and / or, the second included angle is between 25° and 35°.

12. The busbar structure of claim 7, wherein, The ratio of the width of the first antennae to the diameter of the battery cell is between 1 / 3 and 1 / 2; and / or, the ratio of the width of the second antennae to the diameter of the battery cell is between 1 / 3 and 1 / 2.

13. The busbar structure of claim 7, wherein, The first conductive unit and the second conductive unit have a height difference in the third direction.

14. The busbar structure of claim 13, wherein, The second antenna portion further includes a connecting segment connecting the main body portion and a bent segment connecting the second conductive unit. The connecting segment and the bent segment are connected. The bent segment is inclined and, on the plane of the busbar structure, the end of the bent segment connected to the second conductive unit is closer to the second conductive unit than the end of the bent segment connected to the connecting segment.

15. The busbar structure of claim 14, wherein, The connecting segment is provided with a through hole so that the connecting segment forms a fused structure connecting the first conductive unit and the second conductive unit.

16. The busbar structure according to any one of claims 3 to 15, characterized in that The connecting bars are provided in multiple ways, and the multiple connecting bars are arranged along the first direction. The projections of two adjacent connecting bars on the plane of the busbar structure are rotated around the axis extending along the first direction.

17. The busbar structure according to any one of claims 1 to 15, characterized in that S < N.

18. A CCS assembly characterized in that, Includes the bus structure as described in any one of claims 1 to 17.

19. A battery module, comprising: include: Multiple battery cells; as well as, The CCS component as described in claim 18.

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