Battery module and vehicle
By combining the cell matrix arrangement and the busbar limiting component structure, the problem of reduced energy density caused by cell gaps in the battery pack is solved, thereby improving the stability and safety of the cell assembly and enhancing the energy density and overall integrity of the battery module.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-14
- Publication Date
- 2026-03-10
AI Technical Summary
In the existing technology, the use of brackets to fasten multiple cylindrical cells in vehicle battery packs results in large gaps between adjacent cells, which reduces the energy density of the cell assembly and the energy density of the battery pack.
The battery cells are arranged in a matrix and fixedly connected by busbars and limiting components to reduce the gap between adjacent cells. The combination of busbars and limiting components is used to fix the battery cell assembly, avoid deformation conduction, and enhance the stability and safety of the battery cell assembly.
While keeping the number of cells constant, the volume of the cell assembly was reduced, the energy density of the cell assembly was increased, the energy density of the battery module was increased, and the safety and integrity of the battery module were improved.
Smart Images
Figure CN223986653U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to battery technical field, concretely relates to a battery module and vehicle. BACKGROUND
[0002] With the rapid development of electric vehicles, the vehicle-mounted battery pack becomes an important research direction.
[0003] In the prior art, the vehicle-mounted battery pack includes a cell assembly, the cell assembly includes a plurality of cylindrical cells, and the plurality of cylindrical cells are fixed by a support to enhance the integrity of the cell assembly. In addition, the vehicle-mounted battery pack is separately installed in the vehicle cabin.
[0004] When the support is used to fasten the plurality of cylindrical cells, there is a large gap between adjacent cylindrical cells, which increases the total volume of the cell assembly under the condition that the capacitance of the cell assembly remains unchanged, thereby reducing the energy density of the cell assembly, and thus reducing the energy density of the battery pack. SUMMARY
[0005] The purpose of the utility model embodiment is to provide a battery module and vehicle, the cell assembly of the battery module avoids the mode of using a support to fasten a plurality of cells, which reduces the total volume of the cell assembly under the condition that the capacitance of the cell assembly remains unchanged, thereby increasing the energy density of the cell assembly, and thus increasing the energy density of the battery module.
[0006] In order to solve the above technical problems, the utility model is realized as follows:
[0007] In a first aspect, the utility model embodiment provides a battery module, which comprises a cell assembly, a current collection assembly and a limiting piece. The cell assembly comprises a plurality of cells, the side surfaces of adjacent cells abut, the plurality of cells are arranged in a matrix, a plurality of cells on the same row form a cell group, and the electrodes of each cell in the cell group are oriented in the same direction.
[0008] The current collection assembly comprises a plurality of first current collection pieces and a plurality of second current collection pieces, each positive electrode of each cell in a cell group is fixedly connected with a first current collection piece, and each negative electrode of each cell in a cell group is fixedly connected with a second current collection piece.
[0009] The limiting piece is provided with a plurality of positioning grooves, and the cells on one side of each cell group along a first splicing direction are accommodated in the positioning grooves. The first splicing direction is the direction in which the plurality of cells are spliced to form the cell group.
[0010] Optionally, the outer surface of the cell is attached to the inner surface of the positioning groove.
[0011] Optionally, the electric core is a cylindrical electric core, and an inner surface of the positioning groove is a circular arc surface, and a radius of a cross section of the cylindrical electric core is same as a radius of the circular arc surface.
[0012] Optionally, the first and / or second bus bars are bus plates, and one end of the bus plate is provided with a terminal.
[0013] Optionally, the terminal is a terminal plate, and the terminal plate is perpendicular to the bus plate.
[0014] Optionally, the terminal plate on the first bus bar is provided with a positive electrode mark, and the terminal plate on the second bus bar is provided with a negative electrode mark.
[0015] Optionally, the battery module further comprises an integrated busbar, and the integrated busbar comprises a printed circuit board, and the first and second bus bars are connected to the printed circuit board.
[0016] In the second aspect, the utility model embodiment further provides a vehicle, and the vehicle comprises the battery module in any one of the first aspect.
[0017] Optionally, the vehicle comprises a battery container, and the battery module is fixedly arranged in the battery container.
[0018] Optionally, the battery container comprises a fixed cover and a movable shell, and the fixed cover and the movable shell are detachably connected; the movable shell and the fixed cover are connected to form the battery container.
[0019] Optionally, an inner wall of the movable shell is provided with a plurality of limiting grooves, and one electric core group is arranged in one limiting groove.
[0020] Optionally, an inner wall of the movable shell is provided with a plurality of limiting ribs, and the limiting ribs are parallel to each other, and adjacent limiting ribs form the limiting groove.
[0021] Optionally, the battery container further comprises a sealing member, and when the movable shell is connected to the fixed cover, the sealing member is arranged between the movable shell and the fixed cover.
[0022] In the embodiment, since the plurality of electric cores are arranged in a matrix, the plurality of electric cores in the same row form an electric core group. Thus, a plurality of electric core groups can be formed, and the plurality of electric core groups are arranged in the same direction in sequence. Then, the electrodes of each electric core in the electric core group are oriented in the same direction. Thus, the electric cores in each electric core group are connected in parallel.
[0023] Then, since the current-conducting assembly includes a plurality of first current-conducting pieces and a plurality of second current-conducting pieces, the first current-conducting pieces are fixedly connected with the positive poles of each battery cell of one battery cell group, and the second current-conducting pieces are fixedly connected with the negative poles of each battery cell of one battery cell group. In this way, each battery cell group can be fixedly connected as a whole through the first current-conducting pieces and the second current-conducting pieces. In addition, the first current-conducting pieces can act as the positive pole of the whole battery cell group, and the second current-conducting pieces can act as the negative pole of the whole battery cell group, so that different battery cell groups inside one battery cell assembly can be conveniently connected in series.
[0024] The plurality of first current-conducting pieces and the plurality of second current-conducting pieces are only connected through wires, and there is no rigid connection. That is, adjacent first current-conducting pieces or adjacent second current-conducting pieces can move relatively. Therefore, when the battery cell assembly is deformed along a direction perpendicular to the connection direction of the battery cell group, the deformation can be prevented from being transmitted from one battery cell group to other battery cell groups, thereby avoiding that the battery cell assembly is torn and scratched after being impacted and deformed, and thereby improving the safety of the battery module.
[0025] Then, since the limiting piece along the first splicing direction is attached to one side of the battery cell assembly, the limiting piece is provided with a plurality of positioning grooves, and the battery cells on one side of each battery cell group are accommodated in the positioning grooves along the first splicing direction, and the first splicing direction is the direction in which a plurality of battery cells are spliced to form a battery cell group. In this way, the plurality of battery cell groups can be limited and fixedly connected in the direction of arrangement through the plurality of positioning grooves provided on the limiting piece, that is, the plurality of battery cell groups can be fixedly connected in the above-mentioned matrix direction. In this way, the direction of the rows of the battery cell assembly can be fixedly connected through the current-conducting assembly, and the direction of the columns of the battery cell assembly can be fixedly connected through the limiting piece. In this way, when a plurality of battery cells form a battery cell assembly, the plurality of battery cells can be prevented from being scattered, thereby making the battery cell assembly more stable and being able to maintain a certain form.
[0026] Then, since the battery cell assembly includes a plurality of battery cells, the side surfaces of adjacent battery cells abut. Compared with the way of fixing and connecting a plurality of battery cells by using a support in the related art, the gap between adjacent battery cells can be reduced in this way, thereby being able to reduce the volume of the battery cell assembly while ensuring the number of battery cells, thereby making the overall volume of the battery cell assembly smaller while ensuring the electric capacity, and thereby increasing the energy density of the battery cell assembly, and thus increasing the energy density of the battery module.
[0027] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, the specific embodiments of the present application can be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described below. BRIEF DESCRIPTION OF DRAWINGS
[0028] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:
[0029] Figure 1 This is an exploded view of a battery module provided in an embodiment of this utility model;
[0030] Figure 2 yes Figure 1 A schematic diagram of the connection between the busbar assembly and the battery cell assembly;
[0031] Figure 3 yes Figure 1 A schematic diagram of the structure of the first and second busbars in the circuit;
[0032] Figure 4 yes Figure 1 A schematic diagram of the limiting component in the middle;
[0033] Figure 5 yes Figure 2 A top view of the busbar component in the middle;
[0034] Figure 6 This is an exploded view of a vehicle battery container provided in an embodiment of this utility model;
[0035] Figure 7 yes Figure 1 The battery module is fixedly installed in Figure 6 A schematic diagram of the structure inside the movable shell;
[0036] Figure 8 yes Figure 7 The cross-sectional view of the movable housing formed by cutting it with a plane parallel to the cross-section of the battery cell.
[0037] Explanation of reference numerals in the attached figures:
[0038] 1-Battery module, 11-Cell assembly, 111-Cell group, 1111-Cell, 12-Busbar assembly, 121-First busbar, 122-Second busbar, 123-Terminal, 13-Limiting component, 131-Positioning groove, 14-Integrated busbar, 141-Printed circuit board, 15-Wire harness, 2-Battery container, 21-Fixed cover, 22-Modible housing, 221-Limiting groove, 222-Limiting rib, 23-Connector, 24-Sealer. Detailed Implementation
[0039] 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, 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.
[0040] The terms "first," "second," etc., used in the specification and claims of this utility model are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of this utility model can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first," "second," etc., are generally of the same class and the number of objects is not limited; for example, the first object can be one or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.
[0041] The battery module and vehicle provided by the present invention will be described in detail below with reference to the accompanying drawings, through specific embodiments and application scenarios.
[0042] Figure 1 This is an exploded view of a battery module 1 provided in an embodiment of this utility model. Figure 2 yes Figure 1 A schematic diagram of the structure when the busbar assembly 12 and the cell assembly 11 are connected. Figure 3 yes Figure 1 A schematic diagram of the structure of the first busbar 121 and the second busbar 122.
[0043] See Figure 1 , Figure 2 and Figure 3 The battery module 1 includes: a cell assembly 11, a busbar assembly 12, and a limiting member 13. The cell assembly 11 includes multiple cells 1111, with the sides of adjacent cells 1111 abutting each other. The multiple cells 1111 are arranged in a matrix, and multiple cells 1111 located in the same row form a cell group 111. The electrodes of each cell 1111 in the cell group 111 have the same orientation.
[0044] The busbar assembly 12 includes a plurality of first busbars 121 and a plurality of second busbars 122. The first busbars 121 are fixedly connected to the positive terminal of each cell 1111 of a cell group 111; the second busbars 122 are fixedly connected to the negative terminal of each cell 1111 of a cell group 111.
[0045] The limiting member 13 is provided with multiple positioning grooves 131; the battery cells 1111 on one side of each battery cell group 111 along the first splicing direction are accommodated in the positioning grooves 131; the first splicing direction is the direction in which multiple battery cells 1111 are spliced together in sequence to form a battery cell group 111.
[0046] In this embodiment, since multiple battery cells 1111 are arranged in a matrix, multiple battery cells 1111 located in the same row form a battery cell group 111. Thus, a battery cell assembly 11 can form multiple battery cell groups 111, which are arranged sequentially in the same direction. Furthermore, since the electrodes of each battery cell 1111 in each battery cell group 111 face the same direction, it facilitates the parallel connection of the battery cells 1111 within each battery cell group 111.
[0047] Next, since the bus assembly 12 includes multiple first busbars 121 and multiple second busbars 122, the first busbars 121 are fixedly connected to the positive terminal of each cell 1111 in a cell group 111; the second busbars 122 are fixedly connected to the negative terminal of each cell 1111 in a cell group 111. In this way, each cell group 111 can be fixedly connected into a whole through the first busbars 121 and the second busbars 122. In addition, the first busbars 121 can act as the positive terminal of the entire cell group 111, and the second busbars 122 can act as the negative terminal of the entire cell group 111, which facilitates the series connection of different cell groups 111 within a cell assembly 11.
[0048] The multiple first busbars 121 and multiple second busbars 122 are connected only by wires, and there is no rigid connection. That is, adjacent first busbars 121 or adjacent second busbars 122 can move relative to each other. Therefore, when the cell assembly 11 deforms along the connection direction perpendicular to the cell group 111, the deformation can be prevented from being conducted from one cell group 111 to other cell groups 111, thereby preventing the cell assembly 11 from tearing and scratching the cell 1111 after being impacted and deformed, thus improving the safety of the battery module 1.
[0049] Next, since the limiting member 13 along the first splicing direction is attached to one side of the cell assembly 11, the limiting member 13 is provided with multiple positioning grooves 131; the cell 1111 on one side of each cell group 111 along the first splicing direction is accommodated in the positioning groove 131; the first splicing direction is the direction in which multiple cells 1111 are sequentially spliced to form a cell group 111. In this way, the multiple positioning grooves 131 provided on the limiting member 13 can limit and fix the multiple cell groups 111 in their arrangement direction, that is, multiple cell groups 111 can be fixedly connected in the direction of the above-mentioned matrix columns. In this way, the bus assembly 12 can fix the cell assembly 11 in the row direction, and the limiting member 13 can fix the cell assembly 11 in the column direction. In this way, when multiple cells 1111 form a cell assembly 11, it can be ensured that the multiple cells 1111 will not fall apart, thereby making the cell assembly 11 relatively stable and able to maintain a certain shape.
[0050] Next, since the cell assembly 11 includes multiple cells 1111, the sides of adjacent cells 1111 abut against each other. Compared with the method of using brackets to fix multiple cells 1111 in related technologies, this can reduce the gap between adjacent cells 1111, thereby reducing the volume of the cell assembly 11 while keeping the number of cells 1111 the same. This makes the overall volume of the cell assembly 11 smaller while keeping the capacity the same, thus increasing the energy density of the cell assembly 11, and therefore increasing the energy density of the battery module 1.
[0051] Alternatively, in some embodiments, see Figure 1 , Figure 2 , Figure 3 and Figure 4 The outer surface of the battery cell 1111 is attached to the inner surface of the positioning groove 131.
[0052] The battery cell 1111 housed in the positioning groove 131 cannot move relative to the positioning groove 131, so that the corresponding multiple battery cell groups 111 cannot move relative to the positioning groove 131. This allows the limiting member 13 to connect the multiple battery cell groups 111 arranged side by side more firmly, thus enhancing the overall integrity of the battery module 1.
[0053] Alternatively, in some embodiments, see Figure 1 , Figure 2 , Figure 3 and Figure 4 The battery cell 1111 is a cylindrical battery cell 1111, and the inner surface of the positioning groove 131 is an arc surface. The radius of the cross section of the cylindrical battery cell 1111 is the same as the radius of the arc surface.
[0054] When cylindrical cells 111 are assembled into a battery module 1, compared to cells 1111 of other shapes, it is not necessary to consider the orientation of the cells 1111 in their cross-sectional direction during assembly, which improves assembly efficiency and, consequently, the production efficiency of the cell assembly 11, thus increasing the production efficiency of the battery module 1. Furthermore, since cylindrical cells 1111 are common cylindrical cells, their production technology is relatively mature and their cost is low, thus reducing the production cost of the cell assembly 11, and consequently, the production cost of the battery module 1.
[0055] The inner surface of the positioning groove 131 is an arc surface, and the radius of the cross-section of the cylindrical cell 1111 is the same as the radius of the arc surface. This perfectly matches the shape of the cylindrical cell 1111.
[0056] Alternatively, in some embodiments, see Figure 1 , Figure 2 , Figure 3 and Figure 5 The first busbar 121 and / or the second busbar 122 are busbar segments, and one end of the busbar segment is provided with a terminal block 123.
[0057] In this embodiment, when the first busbar 121 is configured as a busbar plate, when the first busbar 121 is in close contact with the positive electrode of the battery cell 1111, the height of the first busbar 121 protruding relative to the positive electrode of the battery cell 1111 can be reduced, thereby reducing the volume of the entire battery cell assembly 111 and thus increasing the energy density of the battery cell assembly 111. Similarly, when the second busbar 122 is configured as a busbar plate, when the second busbar 122 is in close contact with the negative electrode of the battery cell 1111, the height of the second busbar 122 protruding relative to the negative electrode of the battery cell 1111 can be reduced, thereby also reducing the volume of the entire battery cell assembly 111 and thus increasing the energy density of the battery cell assembly 111.
[0058] Next, since a terminal 123 is provided at one end of the busbar, the current collected at the positive terminal of the battery cell 1111 via the first busbar 121 can flow out through the terminal 123, and the current at the negative terminal of the battery cell 1111 flows into the second busbar 122 through the terminal 123, and then flows back to the negative terminal of the battery cell 1111. In other words, the terminal 123 can connect the battery cell assembly 111 to the external circuit, so that the battery cell assembly 11 can continuously output the electrical energy stored in it, thereby satisfying the discharge function of the battery cell assembly 11.
[0059] Alternatively, in some embodiments, see Figure 1 , Figure 2 , Figure 3 and Figure 5 Terminal 123 is a connector, and the connector is perpendicular to the busbar.
[0060] In this embodiment, the terminal 123 is located at one end of the busbar. When the terminal 123 is a connecting piece and the connecting piece is perpendicular to the busbar, the connecting piece can limit the outermost cell 1111 of the cell assembly 111, making the structure of the cell assembly 111 more stable and thus enhancing the overall integrity of the cell assembly 11.
[0061] Alternatively, in some embodiments, see Figure 1 , Figure 2 , Figure 3 and Figure 5 The terminals on the first busbar 121 are marked with a positive terminal, and the terminals on the second busbar 122 are marked with a negative terminal.
[0062] To prevent incorrect electrode connection when multiple battery cell groups 111 are connected in series, a positive terminal mark is provided on the terminal piece of the first busbar 121, and a negative terminal mark is provided on the terminal piece of the second busbar 122. This improves the identification of the positive and negative terminals of the battery cell group 111 without affecting the function of the busbar assembly 12, thus facilitating the connection of multiple battery cell groups 111 and also improving the safety of the battery cell assembly 11.
[0063] It should be noted that the above-mentioned positive electrode mark and the above-mentioned negative electrode mark can be "+" and "-", or "positive" and "negative", or other marks that can distinguish between positive and negative electrodes. This application embodiment does not limit this.
[0064] Alternatively, in some embodiments, see Figure 1 , Figure 2 and Figure 3 The battery module 1 also includes an integrated busbar 14, which includes a printed circuit board 141. The first busbar 121 and the second busbar 122 are both connected to the printed circuit board 141.
[0065] The integrated busbar 14 is a widely used and technologically mature structural component in battery module 1 and energy storage system. It features a thin and lightweight structure, high integration, and small footprint; excellent sealing to effectively prevent external environmental interference with the cell assembly 11; strong weather resistance to adapt to various harsh working environments; simple installation, improving the assembly efficiency of the cell assembly 11; and its unique structural and technological advantages make the cell assembly 11 safer and more reliable.
[0066] Next, since the integrated busbar 14 includes a printed circuit board 141, both the first busbar 121 and the second busbar 122 are connected to the printed circuit board 141. Because the printed circuit board 141 is relatively small, the volume of the battery module 1 can be reduced while ensuring the normal discharge of the battery cell assembly 11. This results in a smaller overall volume of the battery module 1 while maintaining the same capacity, thereby increasing the energy density of the battery module 1.
[0067] In addition, the battery module 1 also includes a wiring harness 15. A power transmission circuit is attached to the printed circuit board 141. One end of the wiring harness 15 is connected to the power transmission circuit, and the other end of the wiring harness 15 is connected to the power-consuming device. In this way, the battery module 1 can be connected to the power-consuming device through the wiring harness 15. The printed circuit board 141 is disposed on the side of the limiting member 13 away from the cell assembly 11, so that the limiting member 13 can effectively support the printed circuit board 141.
[0068] To achieve a higher output voltage for the battery cell assembly 11, multiple battery cell groups 111 need to be connected in series. To facilitate this connection, the electrodes of adjacent cells 1111 within the battery cell assembly 11 are reversed. This allows the positive terminal of one cell group 111 to be connected in series with the negative terminal of the next cell group 111 along the direction of current flow, simplifying the series circuit. This reduces the size of the battery cell assembly 11 while maintaining the same capacity, thus increasing the energy density of the battery cell assembly 11 and consequently, the energy density of the battery module 1.
[0069] See Figure 1 , Figure 6 , Figure 7 and Figure 8 This application also discloses a vehicle that includes any of the above-described battery modules 1.
[0070] In this battery module 1, the cell assembly 11 can be fixedly connected in the row direction via the busbar assembly 12, and in the column direction via the limiting member 13. This ensures that multiple cells 1111 do not scatter when forming a single cell assembly 11, thus making the cell assembly 11 more stable and maintaining a certain shape. Furthermore, since the cell assembly 11 comprises multiple cells 1111, the sides of adjacent cells 1111 abut against each other. Compared to the method of using brackets to fix multiple cells 1111 in related technologies, this reduces the gap between adjacent cells 1111, thereby reducing the volume of the cell assembly 11 while maintaining the same number of cells 1111. This results in a smaller overall volume for the same capacity, increasing the energy density of the cell assembly 11, and thus increasing the energy density of the battery module 1.
[0071] This allows for high energy density while maintaining good overall integrity of the battery module 1. In other words, it enables a smaller battery module 1 while ensuring the same capacity. Consequently, when the battery module 1 is installed in the vehicle, it occupies less space, thus facilitating vehicle miniaturization design.
[0072] It should be noted that the aforementioned vehicles may be electric bicycles or electric scooters, or other types of small electric vehicles; this application embodiment does not limit this.
[0073] Alternatively, in some embodiments, see Figure 1 , Figure 6 , Figure 7 and Figure 8 The vehicle includes a battery container 2, and a battery module 1 is fixedly installed inside the battery container 2. The battery container 2 is mounted on the vehicle frame.
[0074] In existing technologies, the complete battery pack is installed inside the vehicle's battery compartment. The entire assembly process requires the battery pack and battery compartment to fit together in multiple places, which places high demands on the precision of the fit between various materials. At the same time, multiple fits increase the risk of failure, which is not conducive to the safe and stable operation of the vehicle.
[0075] When the battery container 2 is mounted on the vehicle frame, the battery module 1 is fixedly mounted inside the battery container 2. In this way, the battery container 2 on the vehicle body can act as the outer shell of the battery pack, thus forming a unified whole between the battery pack and the vehicle. This avoids the fit issues between the battery pack and the battery compartment, achieving an integrated design of the vehicle body and battery pack. This improves the vehicle's vibration and impact resistance, enhances the overall robustness of the vehicle, and reduces the probability of battery pack failure, resulting in greater vehicle stability during operation.
[0076] Alternatively, in some embodiments, see Figure 1 , Figure 6 , Figure 7 and Figure 8 The battery container 2 includes a fixed cover 21 and a movable housing 22, which are detachably connected; the movable housing 22 and the fixed cover 21 are connected and enclosed to form the battery container 2.
[0077] Specifically, the fixed cover 21 is fixedly connected to the vehicle body, and the movable housing 22 is fixedly connected to the fixed cover 21 via a connector 23. The battery module 1 is disposed inside the movable housing 22. Thus, when the movable housing 22 is connected to the fixed cover 21, the battery module 1 is installed on the vehicle body; when the movable housing 22 is separated from the fixed cover 21, the battery module 1 can be separated from the vehicle body, thereby facilitating the installation and removal of the battery module 1 and making the replacement of the battery module 1 more convenient.
[0078] Alternatively, in some embodiments, see Figure 1 , Figure 6 , Figure 7 and Figure 8 The inner wall of the movable housing 22 is provided with multiple limiting grooves 221, and a battery cell assembly 111 is housed in one limiting groove 221.
[0079] When the battery cell assembly 11 is housed within the movable housing 22, multiple limiting slots 221 further limit the position of the battery cell assembly 11. Specifically, the width of the limiting slot 221 is the same as the width of the battery cell assembly 111. By housing the battery cell assembly 111 within a limiting slot 221, the battery cell assembly 111 cannot move relative to the limiting slot 221, and thus cannot move relative to the battery container 2. This makes the battery module 1 more stable when installed in the vehicle, resulting in greater stability during vehicle operation.
[0080] Alternatively, in some embodiments, see Figure 1 , Figure 6 , Figure 7 and Figure 8 The inner wall of the movable housing 22 is provided with multiple limiting ribs 222, which are parallel to each other, and adjacent limiting ribs 222 enclose each other to form a limiting groove 221.
[0081] This makes it easier to install the battery cell assembly 11 onto or remove it from the movable housing 22. Furthermore, the method of forming the limiting groove 221 by enclosing it with limiting ribs 222 is simpler than other methods. The limiting ribs 222 can be formed simply by adding multiple protrusions to the inner wall of the movable housing 22 during production, thus improving the production efficiency of the battery container 2.
[0082] When the cell assembly 11 is a cuboid, the battery container 2 is also a cuboid. At this time, the limiting ribs 222 are set on the bottom and side surfaces of the inner wall of the battery container 2.
[0083] Alternatively, in some embodiments, see Figure 1 , Figure 6 , Figure 7 and Figure 8 Figure 1 Figure 6 Figure 7 Figure 8 The battery container 2 also includes a seal 24. When the movable housing 22 is connected to the fixed cover 21, the seal 24 is sandwiched between the movable housing 22 and the fixed cover 21.
[0084] When the movable housing 22 is connected to the fixed cover 21, the sealing element 24 between the two can make the enclosed battery container 2 form a sealed environment. This can prevent water from entering the battery container 2, and at the same time isolate external dust or impurities from entering the battery container 2. This can ensure the normal operation of the battery module 1 inside the battery container 2, making the vehicle safer and more reliable during operation.
[0085] To further improve the sealing performance of the battery container 2, an adhesive layer is provided in the gap between the battery module 1 and the inner wall of the battery container 2. This further enhances the sealing performance of the battery container 2. This provides better protection for the battery cell assembly 11, preventing it from being damaged by impact, and also provides waterproofing.
[0086] It should be noted that the aforementioned sealing element 24 can be a prefabricated sealing ring or a sealant filled at the connection point between the movable housing 22 and the fixed cover 21 after they are connected. This application embodiment does not limit this.
[0087] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. A battery module (1), characterized in that The battery module (1) comprises: an electric core assembly (11), the electric core assembly (11) comprising a plurality of electric cores (1111), side surfaces of adjacent electric cores (1111) abutting, the plurality of electric cores (1111) arranged in a matrix, a plurality of electric cores (1111) in the same row forming an electric core group (111), and electrodes of each electric core (1111) in the electric core group (111) facing the same direction; a current collection assembly (12), the current collection assembly (12) comprising a plurality of first current collection members (121) and a plurality of second current collection members (122), each first current collection member (121) being fixedly connected with a positive electrode of each electric core (1111) of an electric core group (111), and each second current collection member (122) being fixedly connected with a negative electrode of each electric core (1111) of an electric core group (111); a limiting member (13), the limiting member (13) being provided with a plurality of positioning grooves (131), and the electric cores (1111) on one side of each electric core group (111) in a first splicing direction being accommodated in the positioning grooves (131), the first splicing direction being a direction in which the plurality of electric cores (1111) are spliced to form the electric core group (111) in sequence.
2. The battery module (1) according to claim 1, characterized in that An outer surface of the electric core (1111) is attached to an inner surface of the positioning groove (131).
3. The battery module (1) according to claim 2, characterized in that The electric core (1111) is a cylindrical electric core (1111), the inner surface of the positioning groove (131) is a circular arc surface, and a radius of a cross section of the cylindrical electric core (1111) is the same as a radius of the circular arc surface.
4. The battery module (1) according to claim 1, characterized in that The first current collection member (121) and / or the second current collection member (122) is a current collection sheet, one end of the current collection sheet being provided with a terminal (123).
5. The battery module (1) according to claim 4, characterized in that The terminal (123) is a terminal sheet, and the terminal sheet is perpendicular to the current collection sheet.
6. The battery module (1) according to claim 5, characterized in that The terminal sheet on the first current collection member (121) is provided with a positive electrode mark, and the terminal sheet on the second current collection member (122) is provided with a negative electrode mark.
7. The battery module (1) according to claim 1, characterized in that The battery module (1) further comprises an integrated busbar (14), the integrated busbar (14) comprising a printed circuit board (141), and the first current collection member (121) and the second current collection member (122) are connected with the printed circuit board (141).
8. A vehicle characterized by comprising: The battery module (1) comprises any one of claims 1-7.
9. The vehicle of claim 8, wherein, The vehicle comprises a battery container (2), and the battery module (1) is fixedly arranged in the battery container (2).
10. The vehicle of claim 9, wherein, The battery container (2) comprises a fixed cover (21) and a movable shell (22), and the fixed cover (21) and the movable shell (22) are detachably connected. The movable shell (22) is connected with the fixed cover (21) to form the battery container (2).
11. The vehicle of claim 10, wherein, An inner wall of the movable shell (22) is provided with a plurality of limiting grooves (221), and one electric core group (111) is accommodated in one limiting groove (221).
12. The vehicle of claim 11, wherein, An inner wall of the movable shell (22) is provided with a plurality of limiting ribs (222), the plurality of limiting ribs (222) being parallel to each other, and adjacent limiting ribs (222) form the limiting groove (221).
13. The vehicle of claim 10, wherein, The battery container (2) further comprises a seal (24), which is clamped between the movable case (22) and the fixed cover (21) when the movable case (22) is connected with the fixed cover (21).