Battery module and electric vehicle

Abstract

The embodiment of the utility model provides a battery module and an electric vehicle, and relates to the technical field of battery modules. The battery module comprises a plurality of battery cells, two positioning beams and two end plates, wherein the two positioning beams jointly clamp the plurality of battery cells; a plurality of positioning holes are formed in each positioning beam; the plurality of battery cells are uniformly arranged between the two positioning beams, and each positioning hole corresponds to the anti-explosion valve hole of one battery cell. The two end plates are arranged at two ends of the plurality of battery cells along the arrangement direction of the plurality of battery cells; and the two end plates and the two positioning beams are jointly used for clamping a plurality of battery cells. And a plurality of battery cells can be clamped by arranging the two positioning beams. In addition, positioning holes are formed in the positioning beams, so that the mounting position of each battery cell can be quickly positioned, and quick assembly is realized. The two end plates and the two positioning beams are jointly enclosed to form a hollow cuboid-shaped structure, and a plurality of battery cells are tightly clamped and assembled together. The battery module has few structural parts, the cost is reduced, and the economic benefit of the product is improved.

Description

Technical Field

[0001] This utility model relates to the field of battery module technology, and more specifically, to a battery module and an electric vehicle. Background Technology

[0002] The power battery system is the core component of a pure electric vehicle. Its electrical and mechanical stability directly affects the performance, range, and safe operation of the electric vehicle's motor. Currently, the commonly used cell types include cylindrical cells, prismatic cells, pouch cells, and blade cells. Among these, blade batteries have gained widespread adoption by major OEMs due to their superior safety performance, high energy density, and long cycle life. Blade batteries typically employ CTP (Cell to Pack) technology, a module-less design. This design directly integrates the battery cells into the battery pack, eliminating the traditional module assembly process and significantly reducing redundant space within the battery pack, thus improving space utilization.

[0003] However, most blade battery modules currently have many structural components, making assembly complex and costly. Utility Model Content

[0004] This utility model provides a battery module and an electric vehicle, which have fewer structural components, are easy to assemble, reduce costs, and improve the economic benefits of the product.

[0005] The embodiments of this utility model can be implemented as follows:

[0006] An embodiment of this utility model provides a battery module, which includes:

[0007] Multiple battery cells;

[0008] Two positioning beams are used to clamp the plurality of battery cells; each positioning beam has a plurality of positioning holes; the plurality of battery cells are evenly arranged between the two positioning beams, and each positioning hole corresponds to an explosion-proof valve hole of a battery cell.

[0009] Two end plates are disposed at both ends of the plurality of battery cells along the arrangement direction of the plurality of battery cells; the two end plates and the two positioning beams are used together to clamp the plurality of battery cells.

[0010] In an optional embodiment, for each of the positioning beams, the positioning beam includes a clamping plate and a receiving plate connected at right angles, and the clamping plate is provided with a plurality of positioning holes spaced apart; the clamping plate abuts against the tab end of each of the battery cells, and the receiving plate abuts against the bottom surface of each of the battery cells; the bottom surface of the battery cell is perpendicular to both the tab end of the battery cell and the plane on which the end plate is mounted on the battery cell.

[0011] In an optional embodiment, the positioning beam further includes a connecting plate, which is connected to the side of the clamping plate away from the receiving plate. The connecting plate has multiple mounting holes and is used to connect the battery module and the external structure.

[0012] In an optional embodiment, the positioning beam further includes at least one reinforcing rib, which connects both the connecting plate and the clamping plate.

[0013] In an optional embodiment, the height of the clamping plate is less than the width of the battery cell, and the top of the clamping plate is lower than the tab of the battery cell.

[0014] In an optional embodiment, the battery module further includes multiple bottom epoxy plates, each of which is connected to the multiple battery cells and is spaced apart; the multiple bottom epoxy plates are all disposed on the bottom surface of the battery cells; the bottom surface of the battery cells is perpendicular to both the tab end of the battery cells and the plane on which the end plates are mounted.

[0015] In an optional embodiment, the battery module further includes a top epoxy plate disposed on the top surface of the battery cell; the top surface of the battery cell and the bottom surface of the battery cell are parallel to each other.

[0016] In an optional embodiment, the battery module further includes a busbar and a flexible circuit board, wherein the busbar is connected to the tabs of the plurality of battery cells, and the flexible circuit board is connected to the busbar; the flexible circuit board is disposed on the top epoxy board.

[0017] In an optional embodiment, the battery module further includes multiple heat insulation pads, with at least one heat insulation pad disposed between two adjacent battery cells.

[0018] An embodiment of this utility model also provides an electric vehicle, a vehicle body, and a battery module as described in any of the above embodiments, wherein the battery module is disposed on the vehicle body.

[0019] The beneficial effects of the battery module and electric vehicle according to the embodiments of this utility model include, for example:

[0020] This battery module includes multiple battery cells, two positioning beams, and two end plates. The two positioning beams together clamp the multiple battery cells; each positioning beam has multiple positioning holes; the multiple battery cells are evenly arranged between the two positioning beams, and each positioning hole corresponds to the explosion-proof valve hole of one battery cell. Multiple battery cells can be clamped by using two positioning beams. Furthermore, the positioning holes on the positioning beams allow for quick positioning of each battery cell's installation position, enabling rapid assembly. The two end plates are located at both ends of the multiple battery cells along their arrangement direction; the two end plates and the two positioning beams together clamp the multiple battery cells. The two end plates and the two positioning beams together form a hollow cuboid structure, tightly clamping the multiple battery cells and assembling them together. This battery module has fewer structural components, reducing costs and improving the product's economic efficiency. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a schematic diagram of the battery module provided in an embodiment of the present invention;

[0023] Figure 2 This is an exploded view of the battery module provided in an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the positioning beam provided in an embodiment of the present invention.

[0025] Icons: 1000 - Battery module; 100 - Battery cell; 200 - Positioning beam; 210 - Clamping plate; 211 - Positioning hole; 220 - Support plate; 230 - Connecting plate; 231 - Mounting hole; 240 - Reinforcing rib; 300 - End plate; 400 - Bottom epoxy board; 500 - Top epoxy board; 600 - Busbar; 700 - Flexible circuit board; 800 - Heat insulation pad. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, 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, and therefore should not be construed as a limitation of this utility model.

[0030] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0031] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0032] The power battery system is the core component of a pure electric vehicle. Its electrical and mechanical stability directly affects the performance, range, and safe operation of the electric vehicle's motor. Currently, the commonly used cell types include cylindrical cells, prismatic cells, pouch cells, and blade cells. Among these, blade batteries have gained widespread adoption by major OEMs due to their superior safety performance, high energy density, and long cycle life. Blade batteries typically employ CTP (Cell to Pack) technology, a module-less design. This design directly integrates individual battery cells into the battery pack, eliminating the traditional module assembly process and significantly reducing redundant space within the battery pack, thus improving space utilization. However, most blade battery modules currently have numerous structural components, complex assembly, and high costs.

[0033] Based on this, please refer to Figure 1 and Figure 2The battery module 1000 provided in the embodiments of this utility model can effectively improve the technical problems mentioned above. The battery module 1000 has fewer structural components, is easy to assemble, reduces costs, and improves the economic efficiency of the product. The battery module 1000 is applied to electric vehicles and other electrical equipment; all electrical equipment with this battery module 1000 has the same functions as described above, and will not be elaborated further here.

[0034] The electric vehicle in this embodiment includes a vehicle body and a battery module 1000. The battery module 1000 is disposed on the vehicle body and provides electrical energy to the vehicle body. Of course, the electric vehicle may also have other structures depending on the actual application, which are not limited here.

[0035] The following is a detailed introduction to the battery module 1000.

[0036] Figure 1 This is a schematic diagram of the battery module 1000 provided in an embodiment of the present utility model; Figure 2 This is an exploded view of the battery module 1000 provided in an embodiment of this utility model. Figure 1 and Figure 2 As shown, the battery module 1000 includes multiple battery cells 100, two positioning beams 200, and two end plates 300. The two positioning beams 200 together clamp the multiple battery cells 100. Each positioning beam 200 has multiple positioning holes 211. The multiple battery cells 100 are evenly arranged between the two positioning beams 200, and each positioning hole 211 corresponds to an explosion-proof valve hole of a battery cell 100. The two end plates 300 are located at both ends of the multiple battery cells 100 along the arrangement direction of the multiple battery cells 100. The two end plates 300 and the two positioning beams 200 are used together to clamp the multiple battery cells 100. Multiple battery cells 100 can be clamped by setting two positioning beams 200. In addition, the positioning holes 211 on the positioning beams 200 can quickly position the installation position of each battery cell 100, realizing rapid assembly. The positioning beam 200 provides a track for the arrangement of the battery cells 100, and the positioning beam 200 also has multiple positioning holes 211, providing positioning points for the arrangement of each battery cell 100. The two end plates 300 and the two positioning beams 200 together form a hollow cuboid structure, which tightly clamps the multiple battery cells 100 and assembles them together. This battery module 1000 has fewer structural components, reducing costs and improving the economic efficiency of the product.

[0037] To reduce the weight of the battery module 1000, the positioning beam 200 in this embodiment is made of non-metallic materials such as plastic, polypropylene, polycarbonate, etc., which are not limited here.

[0038] Figure 3 This is a schematic diagram of the positioning beam 200 provided in an embodiment of this utility model. Please refer to... Figure 1 and Figure 2and combined Figure 3 In this embodiment, each positioning beam 200 includes a clamping plate 210 and a receiving plate 220 connected at right angles. The clamping plate 210 has multiple positioning holes 211 spaced apart. The clamping plate 210 abuts against the tab end of each battery cell 100, and the receiving plate 220 abuts against the bottom surface of each battery cell 100. The bottom surface of the battery cell 100 is perpendicular to both the tab end of the battery cell 100 and the plane on which the end plate 300 is mounted. To save space and simplify the assembly process, in this embodiment, the clamping plate 210 is bonded to the tab end of the battery cell 100, and the receiving plate 220 is bonded to the bottom surface of the battery cell 100. Adhesive is applied to the mating surfaces of the clamping plate 210 and the battery cell 100, and also to the mating surfaces of the receiving plate 220 and the battery cell 100, to achieve bonding.

[0039] Furthermore, to facilitate the connection between the battery module 1000 and the external structure, the positioning beam 200 in this embodiment also includes a connecting plate 230. The connecting plate 230 is connected to the side of the clamping plate 210 away from the receiving plate 220. The connecting plate 230 has multiple mounting holes 231 and is used to connect the battery module 1000 and the external structure. The connecting plate 230 can achieve a secure connection between the battery module 1000 and the external structure, such as a vehicle body, by using threaded fasteners such as bolts and screws through the mounting holes 231. Alternatively, the connecting plate 230 can also be connected to the external structure using a snap-fit ​​connection. For example, the connecting plate 230 can also have a snap-fit ​​structure, and the external structure can have a slot that mates with the snap-fit ​​structure. Alternatively, the connecting plate 230 can have a slot, and the external structure can have a snap-fit ​​structure that mates with the slot. Furthermore, the connecting plate 230 can also be connected to the external structure using other methods such as welding, which are not limited here.

[0040] To enhance the overall structure of the positioning beam 200 and improve the overall structural strength of the battery module 1000, please refer to [further details needed]. Figure 1 and Figure 2 and combined Figure 3 In this embodiment, the positioning beam 200 also includes at least one reinforcing rib 240, which connects both the connecting plate 230 and the clamping plate 210. Specifically, the reinforcing rib 240 in this embodiment is triangular. Of course, the shape of the reinforcing rib 240 can also be L-shaped, trapezoidal, or other shapes, which are not limited here.

[0041] Please see Figure 1 and Figure 2In this embodiment, the height of the clamping plate 210 is less than the width of the battery cell 100, and the top of the clamping plate 210 is lower than the tab of the battery cell 100. This design allows the battery cell 100 to be clamped and fixed while simultaneously exposing the tab, facilitating welding of the tab to the busbar 600. Here, the width of the battery cell 100 refers to the length of the plane containing the tab end of the battery cell 100, and the width direction of the battery cell 100 is perpendicular to the arrangement direction of the multiple battery cells 100. Of course, the height of the clamping plate 210 can also be greater than or equal to the width of the battery cell 100, and this is not limited here. When the height of the clamping plate 210 is greater than or equal to the width of the battery cell 100, multiple busbar 600 holes can be provided on the clamping plate 210 to facilitate welding of the busbar 600. Each busbar 600 hole corresponds to a tab, allowing the tab to be welded to the busbar 600.

[0042] Furthermore, the battery module 1000 in this embodiment also includes multiple bottom epoxy plates 400, each of which is connected to multiple battery cells 100, and the multiple bottom epoxy plates 400 are spaced apart. Each bottom epoxy plate 400 is disposed on the bottom surface of the battery cell 100. The bottom surface of the battery cell 100 is perpendicular to both the tab end of the battery cell 100 and the plane on which the end plate 300 is mounted. The bottom epoxy plates 400 are bonded to the multiple battery cells 100. The spaced arrangement of multiple bottom epoxy plates 400 provides a bonding area for the liquid cooling plate and also provides a structural adhesive bonding area for the battery module 1000 and the chassis of the external structure, which can improve the overall connection strength of the battery pack while also meeting thermal management requirements.

[0043] Please see Figure 1 and combined Figure 2 In this embodiment, the battery module 1000 also includes a top epoxy plate 500, which is disposed on the top surface of the battery cell 100. The top surface and bottom surface of the battery cell 100 are parallel to each other. The top epoxy plate 500 can cover the entire top surface of multiple battery cells 100, or it can only cover part of the top surface of multiple battery cells 100. In this embodiment, the top epoxy plate 500 covers the entire top surface of multiple battery cells 100, and the top epoxy plate 500 and multiple battery cells 100 are connected by an adhesive bonding method. The epoxy plate has strong mechanical strength and stability, and can provide the necessary structural support to ensure the fixation and positional accuracy of the internal components of the battery. During long-term use of the battery, this support can prevent the battery from failing due to internal vibration, compression, and other factors. The epoxy plate also has a certain thermal conductivity, which can help the battery to control temperature during operation, especially during high-current charging and discharging. It can help dissipate heat and prevent the battery from overheating. Overheating may lead to a decrease in battery performance, a shortened lifespan, or even a safety accident. The heat dissipation effect of epoxy boards helps keep the battery within a suitable operating temperature range. In addition, epoxy boards have good insulation properties.

[0044] To improve the lifespan of the battery module 1000, the battery module 1000 in this embodiment also includes multiple heat insulation pads 800, with at least one heat insulation pad 800 disposed between two adjacent battery cells 100. The heat insulation pads 800 can effectively insulate heat, reducing the direct impact of overheating on the battery and thus lowering the probability of danger. Temperature fluctuations have a significant impact on battery health, especially in extreme temperature environments. The heat insulation pads 800 can also reduce the impact of external temperature fluctuations on the battery, thereby extending the lifespan of the battery module 1000. By effectively isolating internal heat conduction, preventing overheating, improving safety, increasing heat dissipation efficiency, and extending battery life, the heat insulation pads 800 ensure battery performance and safety.

[0045] Please continue reading. Figure 1 and combined Figure 2 In this embodiment, the battery module 1000 also includes a busbar 600 and a flexible circuit board 700. The busbar 600 is connected to the tabs of multiple battery cells 100, and the flexible circuit board 700 is connected to the busbar 600. The flexible circuit board 700 is disposed on the top epoxy board 500. Tab supports may also be provided to provide mounting points for the electrical connections of the entire battery module 1000.

[0046] According to the battery module 1000 provided in this embodiment, the assembly steps are as follows:

[0047] Two positioning beams 200 are positioned sequentially using tooling for limiting their placement. Then, adhesive is applied to the bonding surface of the bottom epoxy board 400 corresponding to the battery cell 100. Next, one end plate 300 is positioned using tooling, and adhesive is applied to the bonding surface between this end plate 300 and the battery cell 100. Multiple battery cells 100 and heat insulation pads 800 are then stacked sequentially. After stacking, the other end plate 300 is bonded, and the battery cell 100 is then pressed together using tooling. After the battery cell 100 is installed, adhesive is applied to the top epoxy board 500, bonding the top epoxy board 500 to the battery cell 100. Finally, the busbar 600 and flexible circuit board 700 are installed.

[0048] In summary, the battery module 1000 includes multiple battery cells 100, two positioning beams 200, and two end plates 300. The two positioning beams 200 together clamp the multiple battery cells 100. Each positioning beam 200 has multiple positioning holes 211. The multiple battery cells 100 are evenly arranged between the two positioning beams 200, and each positioning hole 211 corresponds to the explosion-proof valve hole of one battery cell 100. The two end plates 300 are located at both ends of the multiple battery cells 100 along the arrangement direction of the multiple battery cells 100. The two end plates 300 and the two positioning beams 200 are used together to clamp the multiple battery cells 100. Multiple battery cells 100 can be clamped by setting two positioning beams 200. In addition, the positioning holes 211 on the positioning beams 200 can quickly position the installation position of each battery cell 100, realizing rapid assembly. Two end plates 300 and two positioning beams 200 together form a hollow cuboid structure that tightly clamps and assembles multiple battery cells 100. This battery module 1000 has fewer structural components, reducing costs and improving the product's economic efficiency.

[0049] The above description is only a specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present utility model should be included within the protection scope of the present utility model.

Claims

1. A battery module, characterized by, include: Multiple battery cells (100); Two positioning beams (200) are provided, which together hold the plurality of battery cells (100); each positioning beam (200) is provided with a plurality of positioning holes (211); the plurality of battery cells (100) are evenly arranged between the two positioning beams (200), and each positioning hole (211) corresponds to an explosion-proof valve hole of a battery cell (100); Two end plates (300) are disposed at both ends of the plurality of battery cells (100) along the arrangement direction of the plurality of battery cells (100); the two end plates (300) and the two positioning beams (200) are used together to clamp the plurality of battery cells (100).

2. The battery module of claim 1, wherein, For each of the positioning beams (200), the positioning beam (200) includes a clamping plate (210) and a receiving plate (220) connected at right angles. The clamping plate (210) is provided with a plurality of positioning holes (211) spaced apart. The clamping plate (210) abuts against the tab end of each of the battery cells (100), and the receiving plate (220) abuts against the bottom surface of each of the battery cells (100). The bottom surface of the battery cell (100) is perpendicular to both the tab end of the battery cell (100) and the plane on which the end plate (300) is mounted.

3. The battery module of claim 2, wherein, The positioning beam (200) also includes a connecting plate (230), which is connected to the side of the clamping plate (210) away from the receiving plate (220). The connecting plate (230) has multiple mounting holes (231) and is used to connect the battery module (1000) and the external structure.

4. The battery module of claim 3, wherein, The positioning beam (200) also includes at least one reinforcing rib (240), which connects the connecting plate (230) and the clamping plate (210).

5. The battery module of claim 2, wherein, The height of the clamping plate (210) is less than the width of the battery cell (100), and the top of the clamping plate (210) is lower than the tab of the battery cell (100).

6. The battery module of claim 1, wherein, The battery module (1000) also includes multiple bottom epoxy plates (400), each of which is connected to multiple battery cells (100) and is spaced apart. Each of the multiple bottom epoxy plates (400) is disposed on the bottom surface of the battery cell (100). The bottom surface of the battery cell (100) is perpendicular to both the tab end of the battery cell (100) and the plane on which the end plate (300) is mounted.

7. The battery module of claim 6, wherein, The battery module (1000) also includes a top epoxy plate (500), which is disposed on the top surface of the battery cell (100); the top surface of the battery cell (100) and the bottom surface of the battery cell (100) are parallel to each other.

8. The battery module of claim 7, wherein, The battery module (1000) further includes a busbar (600) and a flexible circuit board (700). The busbar (600) is connected to the tabs of the plurality of battery cells (100), and the flexible circuit board (700) is connected to the busbar (600). The flexible circuit board (700) is disposed on the top epoxy board (500).

9. The battery module of any one of claims 1-8, wherein, The battery module (1000) also includes a plurality of heat insulation pads (800), and at least one heat insulation pad (800) is disposed between two adjacent battery cells (100).

10. An electric vehicle, characterized by The vehicle includes a vehicle body and a battery module (1000) as described in any one of claims 1-9, wherein the battery module (1000) is disposed on the vehicle body.

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