Battery cell connecting assembly, battery pack and vehicle

Abstract

The utility model provides a battery cell connecting assembly, a battery pack and a vehicle, and relates to the technical field of vehicle parts. The battery cell connecting assembly is used for being arranged on a battery module and comprises a partition plate, a slave control plate and a flexible circuit board, flexible circuit boards electrically connected with the slave control board are arranged on the two sides of the slave control board in the width direction. The slave control board and the flexible circuit board are arranged on the partition board; wherein the flexible circuit boards on the two sides of the slave control board are respectively used for collecting information of corresponding battery cells in the battery module. The battery cell connecting assembly can be mounted at the top of the battery module as a whole, and the battery module and the battery cell connecting assembly are independently assembled and then mounted together, so that the production process of the battery pack is more ordered, and the production efficiency of the battery pack can be improved to a certain extent. The flexible circuit boards on the left side and the right side of the partition plate can collect cell information of the battery module together, and the width of the flexible circuit boards can be designed to be narrow.

Description

Technical Field

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

[0002] With economic development and technological advancements, electrochemical energy storage is finding wider applications in the energy storage industry. Energy storage battery packs are typically assembled from several individual battery cells connected in series and parallel. The connection of these cells is a key technology in battery pack assembly. In relevant battery packs, the individual cells within a battery module are connected via a CCS (Cell Connection System) assembly. The CCS assembly, also known as a cell connection assembly, generally consists of components such as a busbar, an FPCA (Flexible Printed Circuit Assembly), and a slave control board. For example, a busbar is used to connect the cells in series and parallel within the battery module. Simultaneously, to collect real-time cell voltage and temperature data, the FPCA is used to acquire voltage and temperature signals from each cell (individual battery cell) within the battery module and transmit them to the slave control board for processing, ensuring that the cells operate within the specified voltage and temperature ranges.

[0003] In related technologies, the components of the cell connection assembly are typically connected to the battery module individually. For example, the busbar is first installed on each cell of the battery module, then the flexible circuit board is installed on the battery module and connected to each cell, and then the slave control board is placed at the end of the battery module and connected to the flexible circuit board via a connector. The overall process is complex, resulting in low battery pack production efficiency. Moreover, most components of the cell connection assembly need to be connected to each cell of the battery module sequentially, and the relative positions of each component after connection to the cell are uncontrollable. If the connection position of a component is incorrect, it can easily lead to short circuits between adjacent components, posing a significant safety hazard. In addition, the slave control board is usually located at the end of the battery module, which takes up space in the electrical compartment of the battery pack. Furthermore, the flexible circuit board needs to extend from the cell at one end of the battery module to the cell at the other end before it can be connected to the slave control board, resulting in a relatively long flexible circuit board. Since the flexible circuit board needs to collect information from all cells, it requires a large number of internal acquisition lines, which also leads to a wide flexible circuit board, high cost, and greater manufacturing difficulty. Utility Model Content

[0004] This utility model aims to solve at least one of the above-mentioned technical problems.

[0005] To address the aforementioned issues, this utility model provides a cell connection assembly for mounting on a battery module, comprising a separator, a slave control board, and a flexible circuit board; flexible circuit boards electrically connected to both sides of the slave control board are arranged along its width; both the slave control board and the flexible circuit boards are mounted on the separator; wherein the flexible circuit boards on both sides of the slave control board are used to collect information of the corresponding cells in the battery module.

[0006] The battery cell connection assembly provided by this utility model has, but is not limited to, the following technical effects compared with the prior art:

[0007] The control board and flexible circuit board can be integrated with the separator to form a cell connection assembly. This cell connection assembly can be installed as a whole on top of the battery module. By assembling the battery module and the cell connection assembly separately and then installing them together, the battery pack production process becomes more orderly, which can improve the battery pack production efficiency to a certain extent. The separator also provides support and positioning for the flexible circuit board, control board, and other components installed on it, ensuring that the position of each flexible connector before and after connecting to the cell is constrained and controllable by the separator. This makes it easier to ensure precise connection positions with the cell, reduces installation difficulty, and makes it easier to guarantee battery pack safety.

[0008] Furthermore, the control board is mounted on the partition, and flexible circuit boards electrically connected to it are arranged on both sides of the control board in the width direction. For example, flexible circuit boards are arranged on the left and right sides of the control board. In this way, when the cell connection assembly is installed on the top of the battery module, the control board is located between the two ends of the battery module. For example, the control board is located in the middle of the partition and the battery module. Unlike related technologies, the control board does not occupy additional space in the electrical compartment of the battery pack. This allows for a more flexible and reasonable arrangement of components in the battery pack, especially those in the electrical compartment, and also helps to improve the energy density of the battery pack. The control board can be located in the middle of the top of the battery module. The flexible circuit board on the left side of the control board can be used to collect information (voltage and temperature information) of the cells on the left side of the control board, and the flexible circuit board on the right side of the control board can be used to collect information of the cells on the right side of the control board. Since a single flexible circuit board does not need to collect information from all the cells from the leftmost to the rightmost end of the battery module, the width of each flexible circuit board can be designed to be narrower, which can reduce costs.

[0009] Furthermore, the flexible circuit board is welded and fixed to the slave control board at one end near the slave control board.

[0010] Furthermore, the flexible circuit board extends in a direction away from the slave control board, and an overlapping portion is provided at one end of the flexible circuit board near the slave control board. The overlapping portion overlaps with the slave control board, and the flexible circuit board is soldered to the slave control board through the overlapping portion.

[0011] Furthermore, the partition has a mounting groove in the middle that matches the size of the slave control board, and the slave control board is disposed in the mounting groove; and / or, the partition has a strip groove corresponding to the flexible circuit board, and each flexible circuit board is disposed in the corresponding strip groove.

[0012] Furthermore, the cell connection assembly also includes a busbar, and the partition is provided with a mounting port corresponding to the busbar, and the busbar is disposed in the corresponding mounting port.

[0013] Furthermore, at least one set of the flexible circuit boards is arranged on both sides of the slave control board, and each set of the flexible circuit boards includes two flexible circuit boards spaced apart along the length direction of the slave control board.

[0014] Furthermore, the partition is provided with multiple sets of ports corresponding to the explosion-proof valves of the multiple sets of battery cells, and the two flexible circuit boards in each set of flexible circuit boards are symmetrically arranged about the corresponding set of ports.

[0015] This utility model also provides a battery pack, including a battery module and a cell connection assembly as described above, wherein the cell connection assembly is disposed on the corresponding battery module.

[0016] Since the technical improvements and effects of the battery pack are at least the same as those of the aforementioned cell connection components, the battery pack will not be described in detail again.

[0017] Furthermore, the battery pack also includes a crossbeam that passes between the cells of the battery module, wherein the slave control board of the cell connection assembly corresponds to the position of the crossbeam.

[0018] This utility model also provides a vehicle, including the cell connection assembly or battery pack as described above.

[0019] Since the technological improvements and effects of the vehicle are at least the same as those of the aforementioned cell connection components or the aforementioned battery pack, the vehicle will not be described in detail again. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the cell connection assembly installed on the battery module according to an embodiment of the present invention;

[0021] Figure 2 for Figure 1 A schematic diagram of the local structure at point A in the middle;

[0022] Figure 3 This is a schematic diagram of the structure of the cell connection assembly installed before the battery module according to an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the structure of the battery cell connection assembly according to an embodiment of the present utility model;

[0024] Figure 5 This is an exploded structural diagram of the battery cell connection assembly according to an embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Cell connection assembly; 11. Separator; 111. Mounting slot; 112. Through port; 123. Mounting port; 12. Slave control board; 13. Flexible circuit board; 131. Overlapping part; 13a. First circuit board; 13b. Second circuit board; 13c. Third circuit board; 13d. Fourth circuit board; 13e. Fifth circuit board; 13f. Sixth circuit board; 13g. Seventh circuit board; 13h. Eighth circuit board; 14. Busbar; 2. Battery module; 21. Cell; 3. Crossbeam. Detailed Implementation

[0027] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0028] In the description of this utility model, it should be understood that the terms "upper", "lower", "left", "right", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and 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. Therefore, they should not be construed as limitations on this utility model.

[0029] The coordinate system represented by the X, Y, and Z axes in the attached figures is established based on the control plate 12, and the orientation of other components is also represented by this coordinate system. Specifically, the Z-axis in the attached figures represents the thickness direction of the control plate 12, i.e., the vertical direction, with the positive Z-axis indicating up and the negative Z-axis indicating down; the Y-axis in the attached figures represents the width direction of the control plate 12, i.e., the horizontal direction, with the positive Y-axis indicating left and the negative Y-axis indicating right; the X-axis in the attached figures represents the length direction (extension direction) of the control plate 12, i.e., the front-to-back direction, with the positive X-axis indicating front and the negative X-axis indicating back. It should be noted that the aforementioned representations of the Z, Y, and X axes are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component 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.

[0030] See Figure 1-5A cell connection assembly 1 according to an embodiment of the present invention is used to be disposed on a battery module 2, including a separator 11, a slave control board 12 and a flexible circuit board 13; flexible circuit boards 13 electrically connected to both sides of the slave control board 12 in the width direction are arranged therewith; the slave control board 12 and the flexible circuit boards 13 are both disposed on the separator 11; wherein, the flexible circuit boards 13 on both sides of the slave control board 12 are respectively used to collect information of the corresponding cell 21 in the battery module 2.

[0031] In this embodiment, the control board 12 and the flexible circuit board 13 can be integrated with the separator 11 to form the cell connection assembly 1. This cell connection assembly 1 can be installed as a whole on top of the battery module 2. By assembling the battery module 2 and the cell connection assembly 1 separately and then installing them together, the battery pack production process becomes more orderly, which can improve the battery pack production efficiency to a certain extent. The presence of the separator 11 provides support and positioning for the flexible circuit board 13, the control board 12, and other components installed on it, ensuring that the positions of each flexible connector before and after connecting to the cell 21 are constrained and controllable by the separator 11. The precise connection position with the cell 21 is easier to ensure, reducing the installation difficulty and making it easier to ensure the safety of the battery pack.

[0032] Furthermore, the control board 12 is mounted on the partition 11, and flexible circuit boards 13 electrically connected to it are arranged on both sides of the control board 12 in the width direction. That is, flexible circuit boards 13 are arranged on the left and right sides of the control board 12 from the perspective of the figure. In this way, when the cell connection assembly 1 is installed on the top of the battery module 2, the control board 12 is located between the two ends of the battery module 2, for example, the control board 12 is located in the middle of the partition 11 and the battery module 2. Unlike related technologies, the control board 12 does not occupy additional space in the electrical compartment of the battery pack, which allows for more flexible arrangement of components in the battery pack, especially components in the electrical compartment. This design is reasonable and also helps to improve the energy density of the battery pack. The control board 12 can be set in the middle of the top of the battery module 2. The flexible circuit board 13 on the left side of the control board 12 can be used to collect information (voltage and temperature information) of the cells 21 near the left side of the battery module 2. The flexible circuit board 13 on the right side of the control board 12 can be used to collect information of the cells 21 near the right side of the battery module 2. Therefore, it is not necessary to use one flexible circuit board 13 to collect information of a row of cells 21 from the leftmost end to the rightmost end of the battery module 2 at the same time. This allows the length of each flexible circuit board 13 to be designed to be shorter, which can reduce costs and manufacturing difficulty.

[0033] See Figure 2 Optionally, the flexible circuit board 13 is welded to the slave control board 12 at one end near the slave control board 12.

[0034] In related technologies, the slave control board is not only located at the end of the battery module 2 (left or right end in the figure), but also often needs to be connected to the flexible circuit board through a connector also located at the end. The slave control board and the connector not only take up space in the electrical compartment of the battery pack, but the presence of the connector also increases the weight and cost of the battery pack. Secondly, when the flexible circuit board is connected to the slave control board through the connector, assembly errors may occur (such as misalignment).

[0035] In this embodiment, the end of the flexible circuit board 13 closest to the slave control board 12 refers to the right end of the flexible circuit board 13 located to the left of the slave control board 12, and the left end of the flexible circuit board 13 located to the right of the slave control board 12. This end of the flexible circuit board 13 is soldered and fixed to the slave control board 12, eliminating the need for a connector between the two in related technologies. This reduces connector material costs and avoids errors in the connector assembly process (such as misalignment); simultaneously, it enables battery pack weight reduction and improves the overall vehicle range.

[0036] Furthermore, the control board 12 does not necessarily have a direct connection with the battery module 2 or the crossbeams 3 inside the battery pack. The cell connection assembly 1 can be assembled before installing it onto the battery module 2. (See also...) Figure 5 When assembling the cell connection assembly 1, the ends of the control board 12 and the flexible circuit board 13 can be welded and fixed first. When welding the control board 12 and the flexible circuit board 13, the welding equipment is not hindered by other components, which can ensure the feasibility of welding. Welding is not limited to thermoforming, laser soldering, reflow soldering, etc. After the control board 12 and the flexible circuit board 13 are welded, they are then arranged on the partition 11.

[0037] See Figure 1-2 Optionally, the flexible circuit board 13 extends in a direction away from the slave control board 12, and an overlap portion 131 is provided at one end of the flexible circuit board 13 near the slave control board 12. The overlap portion 131 overlaps with the slave control board 12, and the flexible circuit board 13 is soldered to the slave control board 12 through the overlap portion 131.

[0038] In this embodiment, the flexible circuit board 13 extends in a direction away from the slave control board 12. Specifically, the flexible circuit board 13 on the left side of the slave control board 12 extends to the left, corresponding to the position of the leftmost cell 21 in the battery module 2, and the flexible circuit board 13 on the right side of the slave control board 12 extends to the right, corresponding to the position of the rightmost cell 21 in the battery module 2. This allows the flexible circuit boards 13 on both sides of the slave control board 12 to collect information from a row of cells 21 located on the corresponding side of the slave control board 12. The flexible circuit board 13 is welded and fixed to the slave control board 12 through the overlapping portion 131. The overlapping portion 131 increases the welding area between the flexible circuit board 13 and the slave control board 12, ensuring the reliability of the welding point. Furthermore, when the overlap portion 131 of the flexible circuit board 13 is superimposed on the slave control board 12, the two can be thermocompressed. Thermocompressing provides excellent mechanical strength and electrical connection, reducing the risk of welding failures and electronic malfunctions. Compared with traditional welding methods, thermocompressing does not require solder, which means that there is no solder flow and oxidation during the welding process, thereby reducing the occurrence of welding defects. Thermocompressing allows for precise control of temperature, pressure, and welding time, ensuring the consistency of the welding process and improving production quality. The welding temperature is relatively low, and thermocompressing has less thermal impact on surrounding components, reducing the risk of heat-induced damage. Since thermocompressing does not use harmful solder and chemical materials, it has a smaller environmental impact and is more environmentally friendly.

[0039] See Figure 5 Optionally, the partition 11 is provided with a mounting groove 111 in the middle that matches the size of the slave control board 12, and the slave control board 12 is disposed in the mounting groove 111.

[0040] In this embodiment, a mounting groove 111 matching the size of the slave control board 12 is provided in the middle of the partition 11. During the assembly of the battery cell 21 assembly, after the slave control board 12 and the flexible circuit board 13 are welded and fixed at their ends, the slave control board 12 is completely placed in the mounting groove 111, and the flexible circuit board 13 is placed on the partitions 11 on both sides of the mounting groove 111. The mounting groove 111 can provide support and positioning for the slave control board 12, and can also improve the integration of the slave control board 12 and the partition 11 in the vertical (Z-axis direction). For example, it can prevent the slave control board 12 from occupying the vertical space above the partition 11.

[0041] Optionally, the partition 11 may be provided with strip grooves on both sides of the mounting groove 111, and each flexible circuit board 13 may be placed in the corresponding strip groove, thereby providing support and positioning for the flexible circuit board 13. This allows the flexible circuit boards 13 on the same side of the mounting groove 111 to be arranged more neatly and avoid short circuits. The partition 11 is made of insulating material.

[0042] See Figure 1-5Optionally, it also includes a busbar 14, and the partition 11 is provided with a mounting port 123 corresponding to the busbar 14, and the busbar 14 is disposed in the corresponding mounting port 123.

[0043] In addition, the cell connection assembly 1 typically includes busbars 14 connected to the corresponding cells 21 in the battery module 2. Insulating separators 11 can also support and position each busbar 14 corresponding to each cell 21 to prevent short circuits between the busbars 14; for example... Figure 5 As shown, the partition 11 can be provided with mounting ports 123 corresponding to the positive and negative positions of the battery cell 21. The inner wall of the mounting port 123 can have steps. After the busbar 14 is placed in the mounting port 123, it can be supported and positioned. Even if the busbar 14 is subsequently connected to the positive and negative terminals of the battery cell 21, the position of each busbar 14 will not move, ensuring that there will be no accidental contact or short circuit between the busbars 14 or between the busbar 14 and the flexible circuit board 13.

[0044] As mentioned earlier, the flexible circuit board 13 is used to collect voltage and temperature information of the lower battery cell 21. In this embodiment, the flexible circuit board 13 can be electrically connected to the busbar 14, thereby indirectly collecting the information of the corresponding battery cell 21 by collecting the information of the busbar 14. In this way, the following effects can be achieved: After the battery cell connection assembly 1 is assembled, based on the connection between the flexible circuit board 13 and the corresponding busbar 14, the battery cell connection assembly 1 can be placed on top of the battery module 2, and then the busbars 14 in each mounting port 123 can be connected to the corresponding battery cell 21. Other structures of the entire battery cell connection assembly 1 do not need to have a direct connection relationship with the battery cell 21. Specifically, after the busbars 14 in each mounting port 123 are connected to the corresponding battery cell 21, each busbar 14 will not detach upward from the mounting port 123, and since each busbar 14 presses down on the partition 11 vertically, the partition 11 will not detach upward from the battery module 2. At the same time, the flexible circuit board 13 can indirectly collect the information of each battery cell 21 through the busbar 14. Ultimately, the battery cell connection component 1 can be achieved simply by connecting the busbar 14 to the battery cell 21, which is simple, efficient, and safer.

[0045] Optionally, the cell connection assembly 1 also includes a cover plate (not shown in the figure), which covers the mounting groove 111 and is connected to the partition plate 11.

[0046] In this embodiment, the cell connection assembly 1 also includes a cover plate. After the control plate 12 is placed in the mounting groove 111, the cover plate can be placed on the top of the mounting groove 111. That is, the cover plate is placed on the mounting groove 111 from the side of the mounting groove 111 away from the battery module 2, and is connected and fixed to the partition plate 11. The cover plate can be fixed to the partition plate 11 by snap-fit ​​or screw connection, etc., to prevent the control plate 12 from coming out of the mounting groove 111.

[0047] See Figure 1-5 Optionally, at least one set of flexible circuit boards 13 are arranged on both sides of the control board 12, and each set of flexible circuit boards 13 includes two flexible circuit boards 13 spaced apart along the length of the control board 12.

[0048] In this embodiment, as Figure 1-5 As shown, for example, two sets of flexible circuit boards 13 are arranged on each of the left and right sides of the control board 12, for a total of four sets of flexible circuit boards 13. The first set consists of the first circuit board 13a and the second circuit board 13b on the left side of the control board 12, the second set consists of the third circuit board 13c and the fourth circuit board 13d on the right side of the control board 12, the third set consists of the fifth circuit board 13e and the sixth circuit board 13f on the left side of the control board 12, and the fourth set consists of the seventh circuit board 13g and the eighth circuit board 13h on the right side of the control board 12. The first set of flexible circuit boards 13 is used to collect information of the first group of battery cells 21 on the left side of the control board 12, and the second set of flexible circuit boards 13 is used to collect information of the second group of battery cells 21 on the right side of the control board 12. The first group of battery cells 21 and the second group of battery cells 21 each include multiple battery cells 21 distributed sequentially along the Y-axis. The third set of flexible circuit boards 13 is used to collect information of the third group of battery cells 21 on the left side of the control board 12, and the fourth set of flexible circuit boards 13 is used to collect information of the fourth group of battery cells 21 on the right side of the control board 12. The third group of battery cells 21 and the fourth group of battery cells 21 each include multiple battery cells 21 distributed sequentially along the Y-axis. The first group of battery cells 21, the second group of battery cells 21, the third group of battery cells 21 and the fourth group of battery cells 21 together constitute the battery module 2 shown in the figure.

[0049] In this embodiment, each cell 21 is equipped with two flexible circuit boards 13 in a corresponding set of flexible circuit boards 13 for information acquisition. One flexible circuit board 13 in each set of flexible circuit boards 13 can be used to acquire the positive electrode information of the corresponding cell 21, and the other flexible circuit board 13 can be used to acquire the negative electrode information of the corresponding cell 21. Compared with using one flexible circuit board 13 to acquire all the information of a cell 21, in this embodiment, the internal acquisition lines of each flexible circuit board 13 are further reduced, and the width of each flexible circuit board 13 can be further reduced, further reducing the cost and manufacturing difficulty.

[0050] See Figure 1-5 Optionally, the partition 11 is provided with multiple ports 112 corresponding to the explosion-proof valves of multiple sets of battery cells 21, and the two flexible circuit boards 13 in each set of flexible circuit boards 13 are symmetrically arranged about the corresponding set of ports 112.

[0051] In this embodiment, as described above, the battery module 2 has, for example, four sets of battery cells 21. The separator 11 is also provided with four sets of ports 112 corresponding to the explosion-proof valves of these four sets of battery cells 21. This ensures that in the event of thermal runaway of the battery cells 21, the internal pressure of each battery cell 21 in each set of battery cells 21 can be released through the bursting explosion-proof valve and the corresponding port 112. Furthermore, the two flexible circuit boards 13 of each set of flexible circuit boards 13 are also symmetrically arranged about the corresponding set of ports 112, ensuring that the flexible circuit boards 13 can be arranged within the limited space of the separator 11 without hindering the pressure release in the event of thermal runaway of the battery cells 21.

[0052] Another embodiment of the present invention provides a battery pack, including a battery module 2 and a cell connection assembly 1 as described above, wherein the cell connection assembly 1 is disposed on the corresponding battery module 2.

[0053] Since the technological improvements and effects of the battery pack are at least the same as those of the aforementioned cell connection assembly 1, the battery pack will not be described in detail again.

[0054] See Figure 1 and Figure 3 Optionally, the battery pack also includes a crossbeam 3 that passes between the cells 21 of the battery module 2, wherein the slave control board 12 of the cell connection assembly 1 corresponds to the position of the crossbeam 3.

[0055] Similar to related technologies, this embodiment requires a crossbeam 3 on the bottom wall of the battery pack housing to enhance its structural strength. The crossbeam 3 also divides the battery module 2 into two parts, designated as the left and right sides. With the slave control board 12 mounted on the partition 11 aligned with the crossbeam 3, no battery cells 21 are located below the slave control board 12; only the flexible circuit boards 13 on either side of the slave control board 12 contain battery cells 21. This allows the flexible circuit boards 13 on either side of the slave control board 12 to collect information from all the battery cells 21 in the battery module 2. Specifically, the flexible circuit board 13 on the left side of the slave control board 12 collects information from the battery cells 21 on the left side of the module, and the flexible circuit board 13 on the right side collects information from the battery cells 21 on the right side of the module. Furthermore, the slave control board 12 is positioned above the crossbeam 13, eliminating the need for additional installation space and further improving the battery pack's energy density.

[0056] Another embodiment of the present invention provides a vehicle including the aforementioned cell connection assembly or battery pack.

[0057] Since the vehicle's technological improvements and effects are at least the same as those of the aforementioned cell connection components or battery packs, the vehicle will not be described in detail again.

[0058] 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 technical features indicated. Thus, a feature defined as "first" and "second" may explicitly or implicitly include at least one of that feature.

[0059] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. A cell connection assembly for mounting on a battery module (2), characterized in that, It includes a partition (11), a slave control board (12), and a flexible circuit board (13); the slave control board (12) has a flexible circuit board (13) electrically connected to it on both sides in the width direction; the slave control board (12) and the flexible circuit board (13) are both disposed on the partition (11); wherein, the flexible circuit boards (13) on both sides of the slave control board (12) are used to collect information of the corresponding cell (21) in the battery module (2).

2. The cell connection assembly according to claim 1, characterized in that, The flexible circuit board (13) is welded and fixed to the slave control board (12) at one end near the slave control board (12).

3. The cell connection assembly according to claim 2, characterized in that, The flexible circuit board (13) extends in a direction away from the slave control board (12). The flexible circuit board (13) has an overlap portion (131) at one end near the slave control board (12). The overlap portion (131) overlaps with the slave control board (12). The flexible circuit board (13) is soldered to the slave control board (12) through the overlap portion (131).

4. The cell connection assembly according to claim 1, characterized in that, The partition (11) is provided with a mounting groove (111) in the middle that matches the size of the slave control plate (12), and the slave control plate (12) is disposed in the mounting groove (111); And / or, the partition (11) is provided with a strip groove corresponding to the flexible circuit board (13), and each of the flexible circuit boards (13) is disposed in the corresponding strip groove.

5. The cell connection assembly according to claim 1, characterized in that, It also includes a busbar (14), the partition (11) is provided with an installation port (123) corresponding to the busbar (14), and the busbar (14) is disposed in the corresponding installation port (123).

6. The cell connection assembly according to claim 1, characterized in that, At least one set of flexible circuit boards (13) are arranged on both sides of the slave control board (12), and each set of flexible circuit boards (13) includes two flexible circuit boards (13) spaced apart along the length direction of the slave control board (12).

7. The cell connection assembly according to claim 6, characterized in that, The partition (11) is provided with multiple ports (112) corresponding to the explosion-proof valves of the multiple sets of battery cells (21), and the two flexible circuit boards (13) in each set of flexible circuit boards (13) are symmetrically arranged about the corresponding set of ports (112).

8. A battery pack, characterized in that, It includes a battery module (2) and a cell connection assembly (1) as described in any one of claims 1-7, wherein the cell connection assembly (1) is disposed on the corresponding battery module (2).

9. The battery pack according to claim 8, characterized in that, It also includes a crossbeam (3) that passes between the cells (21) of the battery module (2), wherein the slave control board (12) of the cell connection assembly (1) corresponds to the position of the crossbeam (3).

10. A vehicle, characterized in that, It includes the cell connection assembly (1) as described in any one of claims 1-7, or the battery pack as described in any one of claims 8-9.

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