Battery module and vehicle

Abstract

The application provides a battery module and a vehicle. The battery module comprises a battery cell group, a frame and a pressing strip. The battery cell group comprises a plurality of battery cells stacked in a stacking direction, and end plates arranged at both ends of the battery cell group in the stacking direction, and foam arranged between adjacent battery cells. The frame is arranged in the frame and comprises a first support beam arranged at both ends of the battery cell group in a length direction. The pressing strip comprises a pressing portion arranged on the battery cell group and a connecting portion detachably connected with the first support beam. The pressing portion is provided with at least two pressing portions arranged on both sides of the connecting portion to press the battery cell group, and the pressing portion is connected with the battery cell group through a detachable connecting piece. The end plate is limited to abut against the first support beam, and the foam in the compressed state applies a force to the end plate abutting against the first support beam. In this way, the overall structural stability of the battery module is ensured, the replacement of the battery cells in the battery cell group is facilitated, the material is saved, and the after-sales maintenance cost of the battery module is greatly reduced.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a battery module and a vehicle. Background Technology

[0002] With the rapid development of new energy vehicles, the current assembly methods for power battery system cells on the market are mainly modules or CTP structures. CTP battery modules have been widely adopted and accepted by the market. However, most CTP structures use structural adhesive to bond the cells and frames together to ensure the overall structural strength of the battery module. This design does not allow for the removability of the cells. If a cell in the battery module malfunctions, the cell to be replaced cannot be replaced, resulting in material waste and significantly increasing the after-sales maintenance costs of the battery module. Utility Model Content

[0003] In view of this, this application provides a battery module that at least solves the problem of high after-sales maintenance costs caused by the inability to replace the battery cells within the battery module. This application also provides a vehicle including the above-mentioned battery module.

[0004] To achieve the above objectives, this application provides the following technical solution:

[0005] A battery module, comprising:

[0006] A battery cell assembly includes multiple stacked battery cells and end plates disposed at both ends of the stacking direction of the battery cell assembly, and foam is disposed between adjacent battery cells;

[0007] A frame, in which the battery cell assembly is located, the frame including first support beams disposed at both ends of the battery cell assembly along its length;

[0008] The pressure strip includes a pressure covering part that presses against the battery cell assembly and a connecting part that is detachably connected to the first support beam. At least two pressure covering parts are provided to press against the battery cell assembly located on both sides of the connecting part, and the pressure covering part is connected to the battery cell assembly through a detachable connector.

[0009] The end plate is in a limiting contact with the first support beam, and the compressed foam exerts a force on the end plate to press against the first support beam.

[0010] Optionally, the frame includes second support beams located on both sides of the battery cell assembly in the width direction. The second support beams are clearance-fitted with the battery cell assembly to limit the battery cell assembly in the width direction of the battery cell assembly.

[0011] Optionally, the connecting portion extends into the gap between adjacent battery cells and is connected to the second support beam by bolts, with the bolts passing through the connecting portion.

[0012] Optionally, the pressure strip is provided along the length of the battery cell assembly, and multiple bolts are provided at intervals along the length of the battery cell assembly.

[0013] Optionally, the pressing part is detachably connected to the end plate via the connector.

[0014] Optionally, at least one of the end plate and the first support beam is provided with a limiting protrusion protruding along the length direction of the battery cell, and at least the other is provided with a limiting groove adapted to the limiting protrusion.

[0015] Optionally, in the width direction of the cell assembly, both ends of the end plate protrude from the cell.

[0016] Optionally, the portion of the end plate near the second support beam is a first guide portion, and the second support beam is provided with a second guide portion that cooperates with the first guide portion; in the direction in which the battery cell assembly is placed into the frame, the cross-sectional area of ​​the first guide portion gradually decreases, and the cross-sectional area of ​​the second guide portion gradually increases.

[0017] Optionally, the pressure strip, the first support beam, and the second support beam are all hollow frame structures, and the frame structure includes multiple horizontal and / or vertical plates arranged at equal intervals.

[0018] A vehicle comprising the battery module described in any of the preceding claims.

[0019] The battery module provided in this application includes a frame, a cell assembly, and a retaining strip. The cell assembly includes multiple stacked cells and end plates disposed at both ends of the cell assembly in the stacking direction, with foam disposed between adjacent cells. The cell assembly is located within the frame, which includes first support beams disposed at both ends of the cell assembly in the length direction. The end plates abut against the first support beams, and the compressed foam applies a force to the end plates to press against the first support beams. Here, by applying a pressing force to the end plates with the compressed foam, the end plates of the cell assembly and the first support beams are pressed together, thereby limiting the cell assembly in the length direction of the cell assembly and achieving stability of the connection between the cell assembly and the frame.

[0020] Furthermore, the pressure strip includes a pressing portion for pressing the battery cell assembly and a connecting portion detachably connected to the first support beam. At least two pressing portions are provided to press the battery cell assemblies located on either side of the connecting portion, and the pressing portions are connected to the battery cell assemblies via detachable connectors. Here, the pressing portions of the pressure strip press the battery cell assemblies, and the connecting portions of the pressure strip connect to the frame, thereby fixing the battery cell assemblies in the height direction. The detachable connectors further enhance the stability of the connection between the battery cell assemblies and the frame.

[0021] This design allows for easy removal of the pressure bar when a cell malfunctions within the battery module. The pressure bar can be disassembled to release its restriction on the cell assembly, and the assembly can then be compressed to release the restriction between the end plate and the first support beam. This allows the cell assembly to be removed from the frame, releasing the restriction on its width, before the corresponding cell can be replaced. This approach ensures the overall structural stability of the battery module while facilitating cell replacement, saving materials, and significantly reducing after-sales maintenance costs. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the battery module provided in this embodiment;

[0024] Figure 2 This is a structural schematic diagram of the battery cell assembly, pressure bar, and second support beam.

[0025] Figure 3 This is a structural schematic diagram of the end plate, pressure strip, and second support beam.

[0026] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0027] Figure 5 for Figure 4 Enlarged view at point B in the middle;

[0028] Figure 6 This is a schematic diagram of the molding strip structure;

[0029] Figure 7 This is a schematic diagram of the first supporting beam.

[0030] exist Figures 1 to 7 middle:

[0031] 1-Frame, 2-Cell assembly, 3-Pressure strip, 4-Connector, 5-Bolt;

[0032] 11-Second support beam, 12-First support beam, 21-Battery cell, 22-End plate, 31-Covering part, 32-Connecting part;

[0033] 111-Second guide part, 121-Limiting protrusion, 221-Limiting groove, 222-First guide part. Detailed Implementation

[0034] This application provides a battery module that at least solves the problem of high after-sales maintenance costs caused by the inability to replace battery cells within the battery module. This application also provides a vehicle including the aforementioned battery module.

[0035] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] like Figures 1 to 7 As shown, this application embodiment provides a battery module, which is applied in electrical equipment to supply power to the equipment, which can be a vehicle, especially a new energy vehicle. The battery module mainly includes a cell assembly 2, a frame 1, and a pressure strip 3. The cell assembly 2 includes multiple stacked cells 21, which are electrically connected to each other. The cell assembly 2 is located within the frame 1, that is, the frame 1 provides space for the cell assembly 2. The cell assembly 2 also includes end plates 22 disposed at both ends of the stacking direction of the cell assembly 2, and foam (not shown in the figure) is disposed between adjacent cells 21. The frame 1 includes first support beams 12 disposed at both ends of the length direction of the cell assembly 2. The end plates 22 are limited and abut against the first support beams 12, and the foam in a compressed state applies a force to the end plates 22 to press against the first support beams 12. Specifically, during the process of placing the battery cell assembly 2 between two adjacent first support beams 12, a squeezing force needs to be applied to the battery cell assembly 2 along its length using a squeezing fixture (not shown in the figure). Since the foam between the battery cells 21 has a certain elasticity, the length of the battery cell assembly 2 is reduced to less than the initial length by squeezing. The battery cell assembly 2 in the squeezed state is then placed between the two first support beams 12. After that, the squeezing fixture is released from squeezing the battery cell assembly 2. Under the action of the rebound force of the foam in the battery cell assembly 2, the end plate 22 of the battery cell assembly 2 is pressed against the first support beam 12.

[0037] Furthermore, the pressure strip 3 includes a pressing part 31 for pressing the battery cell assembly 2 and a connecting part 32 detachably connected to the frame 1. The pressing part 31 presses the battery cell 21 in the height direction of the battery cell assembly 2, and the connecting part 32 is connected to the frame 1. The pressing part 31 and the connecting part 32 cooperate to fix the battery cell assembly 2, so as to conveniently and securely fix the battery cell assembly 2 in the frame 1. Moreover, at least two pressing parts 31 are provided to press the battery cell assembly 2 located on both sides of the connecting part 32 respectively. Generally speaking, multiple battery cell assemblies 2 are arranged sequentially in the width direction of the battery cell assembly 2 in the frame 1. By providing at least two Each pressing portion 31 presses against the cell groups 2 located on both sides of the connecting portion 32, enabling one pressing strip 3 to press and fix two adjacent cell groups 2, thus improving the pressing efficiency of the pressing strip 3 on the cell groups 2. Furthermore, based on the connection between the connecting portion 32 and the frame 1, the pressing portion 31 is further connected to the cell group 2 through a detachable connector 4. This arrangement can further improve the stability of the connection between the pressing strip 3 and the cell group 2, as well as between the pressing strip 3 and the frame 1, thereby improving the stability of the fixation between the cell group 2 and the frame 1, and thus improving the overall stability of the battery module structure.

[0038] This setup allows for convenient positioning of the battery cell assembly 2 along its length. Combined with the pressure strip 3 for positioning the battery cell assembly 2 along its height, this further enhances the stability of the connection between the battery cell assembly 2 and the frame 1, and further improves the fixing effect of the frame 1 on the battery cell 21.

[0039] It should be noted that the detachable connection method between the pressing part 31 and the battery cell assembly 2 and the detachable connection method between the connecting part 32 and the frame 1 are not limited here. The detachable connection can be one or a combination of bolt 5 connection, snap-fit, magnetic connection and other connection methods.

[0040] It should also be noted that the connection position between the connecting part 32 and the frame 1 is not limited here. The connecting part 32 can be connected to the beam of the frame 1, or it can be connected to the side wall or bottom wall of the frame 1.

[0041] It should also be noted that the height direction of cell pack 2 refers to... Figure 2 The direction indicated by the double-headed arrow Z refers to both the length direction of cell group 2 and the stacking direction of cell 2. Figure 2 The direction indicated by the double-headed arrow Y.

[0042] In the battery module with the above structure, the cell assembly 2 is pressed by the pressing part 31 of the pressing strip 3 and connected to the frame 1 by the connecting part 32 of the pressing strip 3, thereby fixing the cell assembly 2 in the height direction of the cell assembly 2. The pressing part 31 of the pressing strip 3 is connected to the cell assembly 2 by a detachable connector 4. The second support beam 11 is clearance-fitted with the cell assembly 2 to limit the cell assembly 2 in the width direction of the cell assembly 2. This further improves the stability of the connection between the cell assembly 2 and the frame 1. With this configuration, when a cell 21 in the cell assembly 21 malfunctions, the pressing strip 3 can be disassembled to release the limiting effect of the pressing strip 3 on the cell assembly 2, and the cell assembly 2 can be moved out of the frame 1 to release the limiting effect in the width direction of the cell assembly 2. Then, the corresponding cell 21 can be replaced. In this way, while ensuring the overall structural stability of the battery module, it is also convenient to replace the cell 21 in the cell assembly 21, saving materials and greatly reducing the after-sales maintenance cost of the battery module.

[0043] In some embodiments, please refer to Figure 2 The frame 1 includes second support beams 11 located on both sides of the battery cell assembly 2 in the width direction. The second support beams 11 are clearance-fitted with the battery cell assembly 2 to limit the battery cell assembly 2 in the width direction. Clearance-fit connection is a movable connection method in mechanical engineering, characterized by a gap between the assembled components, allowing for slight relative movement while maintaining connection stability. Here, the installation position of the battery cell assembly 2 is limited in the width direction by two adjacent second support beams 11, and the clearance-fitted second support beams 11, combined with the pressure strip 3, limit the battery cell assembly 2 in the height direction. This arrangement conveniently limits the battery cell assembly 2 in the width direction, thereby improving the stability of the limit. Furthermore, since the connecting part 32 is connected to the second support beam 11, and the pressing part 31 is detachably connected to the battery cell assembly 2, and the second support beam 11 and the battery cell assembly 2 are fitted with a clearance, the connection between the battery cell assembly 2, the pressing strip 3, and the second support beam 11 can be more securely achieved.

[0044] It should be noted that the width direction of cell pack 2 refers to... Figure 2 The direction indicated by the double-headed arrow X.

[0045] In some embodiments, please refer to Figure 3 and Figure 4The connecting part 32 extends into the gap between adjacent cell groups 2 and connects with the second support beam 11. This arrangement allows the pressure strip 3 to limit the movement of the cell group 2 in the width direction, and also ensures a tight connection between the connecting part 32 and the second support beam 11, improving the connection stability and thus enhancing the structural strength of the connection between the cell group 2 and the frame 1. The connecting part 32 is connected to the second support beam 11 by bolts 5, thereby improving the structural strength of the connection between the bolts 5 and the second support beam 11. Furthermore, the bolts 5 penetrate the connecting part 32, further enhancing the connection strength between the connecting part 32 and the second support beam 11, and also improving the bending resistance of the connecting part 32, thus improving the overall structural stability of the battery module. Of course, the bolts 5 penetrating the connecting part 32 also facilitate the connection between the connecting part 32 and the second support beam 11, improving the convenience of the connection.

[0046] In some embodiments, please refer to Figure 2 The pressure strip 3 is installed along the entire length of the cell assembly 2. This means that the pressure strip 3 covers all parts of the cell assembly 2 along its length. This arrangement enhances the pressure effect of the pressure strip 3 on the cell assembly 2, thereby improving the stability of the connection between the cell assembly 2 and the frame 1. Furthermore, multiple bolts 5 are spaced apart along the length of the cell assembly 2. The presence of multiple bolts 5 ensures the connection between the pressure strip 3 and the second support beam 11 at various points along the length of the cell assembly 2, further enhancing the pressure effect of the pressure strip 3 on the cell assembly 2 and thus further improving the stability of the connection between the cell assembly 2 and the frame 1.

[0047] It should be noted that the length direction of cell pack 2 refers to... Figure 2 The direction indicated by the double-headed arrow Y.

[0048] In addition, the pressure strip 3 can also be set in a non-continuous manner. For example, multiple pressure strips 3 can be spliced ​​together along the length of the battery cell group 2; or multiple pressure strips 3 can be set at intervals along the length of the battery cell group 2.

[0049] In some embodiments, please refer to Figure 1 and Figure 2The battery cell assembly 2 includes end plates 22 disposed at both ends along its length, and foam (not shown in the figure) is disposed between adjacent battery cells 21. The frame 1 includes first support beams 12 disposed at both ends along the length of the battery cell assembly 2. The battery cell assembly 2 is placed between two first support beams 12, that is, the battery cell assembly 2 is located in the space between two adjacent second support beams 11 and two adjacent first support beams 12. The end plates 22 are in limiting contact with the first support beams 12, and the compressed foam applies a force to the end plates 22 to press against the first support beams 12, thereby limiting the battery cell assembly 2 along its length. Specifically, during the process of placing the battery cell assembly 2 between two adjacent first support beams 12, a pressing force needs to be applied to the battery cell assembly 2 along its length using a pressing fixture (not shown in the figure). Since the foam between the battery cells 21 has a certain elasticity, the pressing force makes the length of the battery cell assembly 2 less than its initial length. The compressed battery cell assembly 2 is then placed between the two first support beams 12. Afterwards, the pressing fixture is released from the pressure on the battery cell assembly 2, and the rebound force of the foam in the battery cell assembly 2 causes the end plate 22 of the battery cell assembly 2 to abut against the first support beam 12. This arrangement conveniently limits the battery cell assembly 2 along its length. Combined with the pressure strip 3 limiting the height of the battery cell assembly 2, the stability of the connection between the battery cell assembly 2 and the frame 1 is further improved, further enhancing the fixing effect of the frame 1 on the battery cell 21.

[0050] In some embodiments, please refer to Figures 2 to 4 The pressing part 31 is detachably connected to the end plate 22 via the connector 4. In the above embodiment, the end plate 22 of the housing abuts against the first support beam 12 of the frame 1. The pressing part 31 is then connected to the end plate 22, and the connecting part 32, integrally formed with the pressing part 31, is connected to the second support beam 11 of the frame 1. This further enhances the stability of the connection between the cell assembly and the frame 1, preventing the cell assembly 2 from shaking when the battery module experiences unavoidable vibrations, thus improving the structural strength of the connection between the cell assembly 2 and the frame 1. Furthermore, connecting the pressing part 31 to the end plate 22 via the connector 4 prevents contact between the pressing part 31 and the cell 21, thereby protecting the cell 21.

[0051] Of course, the pressing part 31 can also be connected to other positions of the cell assembly 2, for example, the pressing part 31 can be connected to the end plates 22 at both ends of the width direction of the cell assembly 2.

[0052] For example, the connector 4 can be a bolt 5, which can improve the stability of the connection between the pressing part 31 and the end plate 22.

[0053] In some embodiments, please refer to Figure 2 , Figure 3 and Figure 7At least one of the end plate 22 and the first support beam 12 is provided with a limiting protrusion 121 protruding along the length direction of the cell assembly 2, and at least the other is provided with a limiting groove 221 adapted to the limiting protrusion 121. An exemplary embodiment in this case provides the following implementation: a limiting protrusion 121 is provided on the end plate 22, and a limiting groove 221 is provided on the first support beam 12; a limiting protrusion 121 is provided on the first support beam 12, and a limiting groove 221 is provided on the end plate 22; a limiting protrusion 121 is provided on the end plate 22, and a limiting groove 221 is provided on the first support beam 12, and simultaneously a limiting protrusion 121 is provided on the first support beam 12, and a limiting groove 221 is provided on the end plate 22. Here, by setting the aforementioned limiting protrusion 121 and limiting groove 221, after the battery cell assembly 2, which is in a compressed state, is placed between adjacent first support beams 12, the compression of the battery cell assembly 2 by the compression fixture is released. Under the action of the elastic force of the foam in the battery cell assembly 2, the limiting protrusion 121 in the end plate 22 of the battery cell assembly 2 extends into the limiting groove 221 in the first support beam 12, thereby realizing rapid positioning between the end plate 22 and the first support beam 12, improving the stability of the contact between the end plate 22 and the first support beam 12, further improving the fixing effect of the frame 1 on the battery cell assembly 2, and improving the structural stability of the frame 1 in fixing the battery cell assembly 2. Furthermore, by setting the aforementioned limiting protrusion 121 and limiting groove 221, a limiting effect can be achieved during the installation of the battery cell assembly 2 into the frame 1, thereby improving the installation efficiency of the battery cell assembly 2. In addition, by setting the aforementioned limiting protrusion 121 and limiting groove 221, the battery cell assembly 2 can be limited not only in the length direction but also in the width and / or height direction. This setting can further improve the stability of the frame 1 in fixing the battery cell assembly 2, and improve the overall stability of the battery module structure through multi-directional limiting.

[0054] Since the extrusion fixture that applies extrusion force to the battery cell assembly 2 along its length is typically a clamp, after the extruded battery cell assembly 2 is placed into the frame 1 by the clamp, the clamp needs to be removed from the frame 1. During the removal process, the clamp will interfere with the frame 1. Therefore, in some embodiments, please refer to... Figure 2 , Figure 3 and Figure 7The limiting protrusions 121 and limiting grooves 221 are spaced apart along the width of the cell assembly 2. This arrangement allows the clamping jaws of the extrusion fixture to easily hold the extruded cell assembly 2 within the frame 1 after it has been placed into the frame 1, as the gaps between the limiting protrusions 121 facilitate placement. Furthermore, it allows the clamping jaws to easily move out of the gaps between the limiting protrusions 121 after the cell assembly 2 has been placed in the frame 1. This design improves the efficiency of placing the cell assembly 2 into the frame 1 and the efficiency of removing the extrusion fixture from the frame 1, thereby increasing the assembly efficiency of the battery module.

[0055] It should be noted that the limiting protrusion 121 on the end plate 22 is correspondingly provided with the limiting groove 221 on the first support beam 12, and the limiting groove 221 on the end plate 22 is correspondingly provided with the limiting protrusion 121 on the first support beam 12.

[0056] In some embodiments, please refer to Figure 5 The end plate 22 near the second support beam 11 has a first guide portion 222, and the second support beam 11 has a second guide portion 111 that cooperates with the first guide portion 222. Specifically, by setting the aforementioned cooperating first guide portion 222 and second guide portion 111, the battery cell assembly 2 can be guided during its placement into the frame 1, preventing collisions between the first guide portion 222 and the second guide portion 111, thus protecting the battery cell assembly 2. Furthermore, by setting the aforementioned first guide portion 222 and second guide portion 111, the efficiency of placing the battery cell assembly 2 into the frame 1 can be improved, thereby increasing the assembly efficiency of the battery cell 21. In the direction in which the battery cell assembly 2 is placed into the frame 1, the cross-sectional area of ​​the first guide portion 222 gradually decreases, while the cross-sectional area of ​​the second guide portion 111 gradually increases. That is, the gap between the first guide portion 222 and the second guide portion 111 limits the battery cell assembly 2 in the width direction.

[0057] For example, the cross-sectional area of ​​the first guide portion 222 and the cross-sectional area of ​​the second guide portion 111 are equal to the cross-sectional area of ​​the first guide portion 222 and the second guide portion 111. Figure 5 The cross section in the direction indicated by the double-headed arrow C.

[0058] It should be noted that the orientation of the battery cell pack 2 when placed into frame 1 is... Figure 5 The direction indicated by the middle arrow D.

[0059] In some embodiments, please refer to Figures 3 to 5In the width direction of the cell assembly 2, both ends of the end plate 22 protrude beyond the cell 21. That is, in the width direction of the cell assembly 2, the width of the cell 21 is less than the width of the end plate 22. This prevents unavoidable collisions between the cell assembly 2 and the frame 1 during the process of placing the cell assembly 2 into the frame 1, thus protecting the cell 21. It should be noted that the portion of the end plate 22 protruding beyond the cell 21 is not limited here. This portion can be the first guide portion 222 mentioned in the above embodiment, or it can be a separate protruding structure, as long as it serves to protect the cell 21.

[0060] In some embodiments, please refer to Figure 3 , Figure 4 and Figure 6 The pressure strip 3, the first support beam 12, and the second support beam 11 are all hollow frame structures. This design ensures the structural strength of the pressure strip 3, the first support beam 12, and the second support beam 11 while reducing their weight. This, in turn, maintains the structural strength of the battery module while reducing its overall weight, thus achieving lightweight battery module development. Ultimately, this reduces the weight of the vehicle equipped with this battery module and improves the vehicle's driving range.

[0061] Furthermore, the frame structure includes multiple horizontal and / or vertical plates arranged at equal intervals. In other words, the frame structure is formed by multiple horizontal and vertical plates arranged at intervals, so that the horizontal and vertical plates of the frame structure form a reinforcing rib structure, thereby further improving the structural strength of the pressure strip 3, the first support beam 12 and the second support beam 11 while reducing the weight of the pressure strip 3, the first support beam 12 and the second support beam 11.

[0062] In some embodiments, please refer to Figures 2 to 4 In the height direction of the battery cell assembly 2, the height of the connecting part 32 is at least half the height of the battery cell assembly 2. That is, when the connecting part 32 and the second support beam 11 are connected together by bolts 5, the height of the connecting part 32 is half the height of the battery cell assembly 2, and the height of the second support beam 11 is the other half of the height of the battery cell assembly 2. This can improve the limiting effect of the connecting part 32 and the second support beam 11 on the battery cell assembly 2, further improve the stability of limiting the battery cell assembly 2, and thus improve the fixing effect of the frame 1 on the battery cell assembly 2.

[0063] This application provides a vehicle including the battery module described in the above embodiments. The battery includes the aforementioned battery module, with a cell assembly 2 pressed against the pressing portion 31 of a pressure strip 3, and connected to a frame 1 via a connecting portion 32 of the pressure strip 3, thereby fixing the cell assembly 2 in the height direction. The pressing portion 31 of the pressure strip 3 is connected to the cell assembly 2 via a detachable connector 4. A second support beam 11 is clearance-fitted with the cell assembly 2 to limit the cell assembly 2 in the width direction. This further improves the stability of the connection between the cell assembly 2 and the frame 1. With this configuration, when a cell 21 in the cell assembly 21 malfunctions, the pressure strip 3 can be disassembled to release the restriction on the cell assembly 2, and the cell assembly 2 can be moved out of the frame 1 to release the restriction in the width direction, after which the corresponding cell 21 can be replaced. In this way, while ensuring the overall structural stability of the battery module, it is also convenient to replace the battery cell 21 in the battery cell 21 module, saving materials and greatly reducing the after-sales maintenance cost of the battery module.

[0064] The basic principles of this application have been described above with reference to specific embodiments. However, it should be noted that the advantages, benefits, and effects mentioned in this application are merely examples and not limitations, and should not be considered as essential features of each embodiment of this application. Furthermore, the specific details disclosed above are for illustrative and facilitative purposes only, and are not limitations. These details do not limit the application to the necessity of employing the aforementioned specific details for implementation.

[0065] The block diagrams of devices, apparatuses, devices, and systems involved in this application are merely illustrative examples and are not intended to require or imply that they must be connected, arranged, or configured in the manner shown in the block diagrams. As those skilled in the art will recognize, these devices, apparatuses, devices, and systems can be connected, arranged, and configured in any manner. Words such as “comprising,” “including,” “having,” etc., are open-ended terms meaning “including but not limited to,” and are used interchangeably with them. The terms “or” and “and” as used herein refer to the terms “and / or,” and are used interchangeably with them unless the context clearly indicates otherwise. The term “such as” as used herein refers to the phrase “such as but not limited to,” and is used interchangeably with it.

[0066] It should also be noted that in the apparatus, equipment, and methods of this application, the components or steps can be disassembled and / or recombined. These disassemblies and / or recombinations should be considered as equivalent solutions of this application.

[0067] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use this application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of this application. Therefore, this application is not intended to be limited to the aspects shown herein, but rather to be accorded the widest scope consistent with the principles and novel features disclosed herein.

[0068] It should be understood that the qualifiers “first,” “second,” “third,” “fourth,” “fifth,” and “sixth” used in the description of the embodiments of this application are only used to more clearly illustrate the technical solutions and are not intended to limit the scope of protection of this application.

[0069] The above description has been given for purposes of illustration and description. Furthermore, this description is not intended to limit the embodiments of this application to the forms disclosed herein. Although numerous exemplary aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, alterations, additions, and sub-combinations thereof.

Claims

1. A battery module, characterized in that, include: A battery cell assembly includes multiple stacked battery cells and end plates disposed at both ends of the stacking direction of the battery cell assembly, and foam is disposed between adjacent battery cells; A frame, in which the battery cell assembly is located, the frame including first support beams disposed at both ends of the battery cell assembly along its length; The pressure strip includes a pressure covering part that presses against the battery cell assembly and a connecting part that is detachably connected to the first support beam. At least two pressure covering parts are provided to press against the battery cell assembly located on both sides of the connecting part, and the pressure covering part is connected to the battery cell assembly through a detachable connector. The end plate is in a limiting contact with the first support beam, and the compressed foam exerts a force on the end plate to press against the first support beam.

2. The battery module according to claim 1, characterized in that, The frame includes second support beams located on both sides of the battery cell assembly in the width direction. The second support beams are clearance-fitted with the battery cell assembly to limit the battery cell assembly in the width direction of the battery cell assembly.

3. The battery module according to claim 2, characterized in that, The connecting portion extends into the gap between adjacent battery cells and is connected to the second support beam by bolts, with the bolts passing through the connecting portion.

4. The battery module according to claim 3, characterized in that, The pressure strip is provided along the length of the battery cell assembly, and multiple bolts are provided at intervals along the length of the battery cell assembly.

5. The battery module according to claim 1, characterized in that, The pressing part is detachably connected to the end plate via the connector.

6. The battery module according to claim 1, characterized in that, At least one of the end plate and the first support beam is provided with a limiting protrusion protruding along the length direction of the battery cell, and at least the other is provided with a limiting groove adapted to the limiting protrusion.

7. The battery module according to claim 1, characterized in that, In the width direction of the battery cell assembly, both ends of the end plate protrude from the battery cell.

8. The battery module according to claim 2, characterized in that, The end plate near the second support beam is a first guide portion, and the second support beam is provided with a second guide portion that cooperates with the first guide portion; in the direction in which the battery cell assembly is placed into the frame, the cross-sectional area of ​​the first guide portion gradually decreases, and the cross-sectional area of ​​the second guide portion gradually expands.

9. The battery module according to claim 2, characterized in that, The pressure strip, the first support beam, and the second support beam are all hollow frame structures, and the frame structure includes multiple horizontal and / or vertical plates arranged at equal intervals.

10. A vehicle, characterized in that, The battery module includes any one of claims 1-9.

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