A limiting structure, a battery cell assembly, a battery pack and a vehicle

Abstract

Embodiments of the present application provide a limiting structure, an electric core assembly, a battery pack and a vehicle. The limiting structure is used for the electric core assembly. The limiting structure comprises a plate body and a limiting portion connected to the plate body. The plate body is used for connecting an electric core module of the electric core assembly, and the plate body abuts against a side beam of the electric core assembly. The limiting portion is arranged at a top end of the plate body, and the limiting portion extends towards the electric core module. In this way, the limiting structure and the electric core module are stably and reliably connected through the plate body. There is a glue filling gap between the electric core module and the side beam, and the glue filling gap is filled with foaming glue. The height of the foaming glue between the electric core module and the side beam is limited by the limiting portion at the top end of the plate body, so that the height of the foaming glue in the final solidification form is not greater than the height of the electric core module, the situation that the foaming glue is higher than the electric core module is avoided, the influence of the foaming glue on other structural members such as the B tab is reduced, and the electric core module has good electrical performance and safety performance.

Description

Technical Field

[0001] This application belongs to the field of battery pack technology, specifically relating to a limiting structure, a cell assembly, a battery pack, and a vehicle. Background Technology

[0002] With the development of technology and the improvement of living standards, people are placing increasingly higher demands on vehicle performance. Among these demands, the battery pack's cell components, which provide the power source, play a crucial role.

[0003] In the prior art, battery cell assemblies typically include battery cell modules and side beams. Along the width direction of the vehicle, there are glue-filling gaps between the battery cell modules and the side beams. Foam is filled into the glue-filling gaps to achieve a better sealing effect for the battery cell modules.

[0004] However, in actual processes, it is difficult to control the curing form of the foam after foaming, which may result in the foam not covering the battery cell module. This can affect the structural components of the battery cell module, such as the battery pack, and consequently affect the electrical and safety performance of the battery cell module. Utility Model Content

[0005] In view of the above problems, the present invention is proposed to provide a limiting structure, a cell assembly, a battery pack and a vehicle that overcomes or at least partially solves the above problems.

[0006] To solve the above-mentioned technical problems, this application is implemented as follows: In a first aspect, embodiments of this application propose a limiting structure for a battery cell assembly, the limiting structure comprising: a plate body and a limiting portion connected to the plate body; The plate body is used to connect the cell module of the cell assembly, and the plate body abuts against the side beam of the cell assembly; The limiting part is disposed at the top of the plate body and extends toward the battery cell module.

[0007] Optionally, the plate body and the limiting part form an L-shaped structure.

[0008] Optionally, the plate body and the limiting part are integrally formed.

[0009] Optionally, the height of the plate body is less than or equal to the height of the battery cell module.

[0010] Optionally, the difference between the height of the plate body and the height of the battery cell module is less than or equal to 4 mm.

[0011] Optionally, the thickness of the plate body and the limiting part is any value between 0.5 and 1 mm.

[0012] Optionally, the plate body and the limiting part are made of one of metal, plastic or composite materials.

[0013] Optionally, the metal includes aluminum, copper, iron, or steel; The plastic includes polycarbonate, polyethylene, polypropylene, or polyamide; The composite material includes resin glass fiber.

[0014] Secondly, embodiments of this application propose a battery cell assembly, which includes a battery cell module, a side beam, and the limiting structure.

[0015] Optionally, the number of the limiting structures is multiple, and at least two of the limiting structures are symmetrically arranged along the width direction of the battery cell module; And / or, at least two of the limiting structures are symmetrically arranged along the length direction of the battery cell module.

[0016] Optionally, the cell assembly includes an adhesive member connected to the side of the plate body of the limiting structure near the cell module.

[0017] Thirdly, embodiments of this application propose a battery pack, which includes the battery cell assembly or the limiting structure.

[0018] Fourthly, embodiments of this application propose a vehicle, the vehicle including the battery pack, or the cell assembly, or the limiting structure.

[0019] In this embodiment, the limiting structure is used for a battery cell assembly. The limiting structure includes: a plate body and a limiting part connected to the plate body; the plate body is used to connect the battery cell module of the battery cell assembly, and the plate body abuts against the side beam of the battery cell assembly; the limiting part is disposed at the top of the plate body, and the limiting part extends toward the battery cell module. Thus, a relatively stable and reliable connection between the limiting structure and the battery cell module is achieved through the plate body. A potting gap exists between the battery cell module and the side beam, and expanding foam is filled into the potting gap for potting. Since the plate body abuts against the side beam of the battery cell assembly, and the limiting part is located at the top of the plate body, the foaming height of the foaming adhesive between the battery cell module and the side beam can be limited by the limiting part located at the top of the plate body. This prevents the height of the final cured foaming adhesive from exceeding the height of the battery cell module, avoids the situation where the foaming adhesive does not cover the battery cell module, reduces the impact of the foaming adhesive on other structural components such as the battery cell assembly, and enables the battery cell module to have better electrical and safety performance.

[0020] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0021] 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: Figure 1 This is one of the structural schematic diagrams of a limiting structure applied to a battery cell assembly according to an embodiment of this application; Figure 2 This is a second schematic diagram of a limiting structure applied to a battery cell assembly according to an embodiment of this application; Figure 3 This is a schematic diagram of a limiting structure according to an embodiment of this application; Figure 4 This is a side view of a limiting structure described in an embodiment of this application; Figure 5 This is a schematic diagram of the structure of a battery pack according to an embodiment of this application.

[0022] Reference numerals: 10-Limiting structure; 11-Board body; 12-Limiting part; 30-Battery cell module; 40-Side beam; 50-Adhesive component. Detailed Implementation

[0023] The embodiments of this utility model will now be described in detail. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0024] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise stated, "a plurality of" means two 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.

[0025] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to 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.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Reference Figures 1 to 5 This illustration shows a limiting structure according to an embodiment of the present application and its application in a battery cell assembly and a battery pack. The limiting structure is used for the battery cell assembly. Specifically, the limiting structure 10 may include: a plate body 11 and a limiting part 12 connected to the plate body 11; the plate body 11 is used to connect the battery cell module 30 of the battery cell assembly, and the plate body 11 abuts against the side beam 40 of the battery cell assembly; the limiting part 12 is disposed at the top of the plate body 11 and extends toward the battery cell module 30.

[0028] In the embodiments of this application, such as Figure 1 and Figure 2 As shown, the limiting structure 10 and the cell module 30 are connected in a relatively stable and reliable manner through the plate body 11. There is a potting gap between the cell module 30 and the side beam 40, and expanding foam is filled into the potting gap. Since the plate body 11 abuts against the side beam 40 of the cell assembly, and the limiting part 12 is set at the top of the plate body 11, the foaming height of the expanding foam between the cell module 30 and the side beam 40 can be limited by the limiting part 12 located at the top of the plate body 11. This prevents the height of the final cured expanding foam from exceeding the height of the cell module 30, and avoids the expanding foam from exceeding the height of the cell module 30. This reduces the impact of the expanding foam on other structural components such as the battery pack, and gives the cell module 30 better electrical and safety performance.

[0029] For example, in the embodiments of this application, such as Figure 5As shown, the cell module 30 can be composed of multiple arrayed cell units. The side beam 40 is the side beam 40 of the battery pack housing, and there are two sets of potting gaps between the cell module 30 and the side beam 40 on both sides along the width direction of the vehicle. Therefore, the number of limiting structures 10 can be four, located at the four corners of the cell module 30. Two of the limiting structures 10 are symmetrically distributed along the length direction of the cell module 30, limiting the height of the foam at both ends of the cell module 30 along the length direction. Also, two of the limiting structures 10 are symmetrically distributed along the width direction of the cell module 30, limiting the height of the foam at both ends of the cell module 30 along the width direction.

[0030] In other optional embodiments of this application, the limiting portion 12 of the limiting structure 10 may also extend along the width direction of the battery cell. One limiting portion 12 of the limiting structure 10 restricts the foam adhesive on the side of a portion of the battery cell module 30, while the other limiting portion 12 restricts the foam adhesive on the side of other portions of the battery cell module 30. Furthermore, the limiting portion 12 of the limiting structure 10 may also extend along the width direction of the battery cell, allowing the limiting portion 12 to restrict the foam adhesive on the entire side of the battery cell module 30. Therefore, the number of limiting structures 10 can be two, etc. The specific type and number of limiting portions 12 are not limited in the embodiments of this application.

[0031] For example, in this embodiment, the limiting part 12 can be connected to all the edges of the top end of the board body 11, that is, the length of the limiting part 12 is the same as the length of the board body 11, so that the limiting part 12 and the board body 11 have good connection strength and connection reliability. In addition, the limiting part 12 can also be connected to a portion of the edge of the board body 11 extending into the glue-pouring gap, that is, the length of the limiting part 12 is smaller than the length of the board body 11, reducing the material used for the limiting part 12. In this embodiment, the specific connection method between the limiting part 12 and the board body 11 is not limited.

[0032] In the embodiments of this application, for example, the limiting part 12 can be obtained by bending process, or the limiting structure 10 having plate body 11 and protruding limiting part 12 can be obtained by pultrusion process. In addition, the limiting structure 10 having plate body 11 and protruding limiting part 12 can also be obtained by injection molding process, etc. The specific molding method of the limiting structure 10 is not limited in the embodiments of this application.

[0033] Optionally, in this embodiment, the plate body 11 and the limiting part 12 form an L-shaped structure, such as... Figure 3 and Figure 4As shown, the side shapes of the panel body 11 and the limiting part 12 are L-shaped. Because the L-shaped structure has both vertical and horizontal surfaces, the limiting structure 10 provides a positioning effect during assembly, eliminating the need for additional positioning components and resulting in a more compact structure for the panel body 11 and the limiting part 12. This also gives the limiting structure 10 better bending resistance, improves structural strength, and enhances the reliability of limiting the height of the foam adhesive.

[0034] In this embodiment, optionally, the plate body 11 and the limiting part 12 are integrally formed. This results in a higher connection strength between the plate body 11 and the limiting part 12, avoiding the need for additional connection structures or processes in a split structure, and preventing poor connection stability due to loosening of the connection structure or aging of the connection process, such as loose bolts, welding fatigue, or adhesive aging. Furthermore, it optimizes the stress distribution between the plate body 11 and the limiting part 12, reducing stress concentration at the corners between the plate body 11 and the limiting part 12. In addition, it also reduces material loss and manufacturing processes.

[0035] Optionally, in this embodiment, the height of the board body 11 is less than or equal to the height of the battery cell module 30. Since the limiting part 12 is disposed at the top of the board body 11, and the height of the board body 11 is set to be less than or equal to the height of the battery cell module 30, the limiting part 12 connected to the top of the board body 11 can effectively limit the foaming height of the foaming adhesive, preventing the foaming adhesive from exceeding the battery cell module 30.

[0036] In this embodiment, optionally, the difference between the height of the board body 11 and the height of the battery cell module 30 is less than or equal to 4 mm. This ensures that the limiting portion 12 connected to the end of the board body 11 has a suitable limiting effect on the foaming height of the foam adhesive, preventing a large difference between the height of the board body 11 and the height of the battery cell module 30, which would result in a small foam adhesive height and make it difficult to achieve effective sealing between the battery cell module 30 and the side beam 40. This ensures that the foam adhesive has a better sealing effect on the battery cell module 30 and the side beam 40.

[0037] For example, in this embodiment, the difference between the height of the board body 11 and the height of the battery module 30 can be 4mm, 3mm, or 1mm, or the difference between the height of the board body 11 and the height of the battery module 30 can be 0, that is, the height of the board body 11 is equal to the height of the battery module 30. All of these can prevent the foam from covering the battery module 30 and make the foam have a good sealing effect on the battery module 30 and the side beam 40. In this embodiment, the specific value of the difference between the height of the board body 11 and the height of the battery module 30 is not limited.

[0038] Optionally, in this embodiment, the thickness of the plate body 11 and the limiting part 12 is any value between 0.5 and 1 mm. This makes the plate body 11 and the limiting part 12 have a more suitable thickness and performance, avoiding the situation where the thickness of the plate body 11 and the limiting part 12 is too small, resulting in low structural strength and affecting the reliability of the limiting structure 10. It also avoids the situation where the thickness of the plate body 11 and the limiting part 12 is too large, requiring a large space, which is beneficial to improving space utilization and avoiding excessive material consumption for the plate body 11 and the limiting part 12.

[0039] In this embodiment, the plate body 11 and the limiting part 12 may optionally be made of metal, plastic, or composite material. For example, the metal may be a single metal or an alloy, the plastic may be a single polymer or a combination of multiple polymers, etc. The specific materials of the plate body 11 and the limiting part 12 are not limited in this embodiment.

[0040] For example, in this embodiment of the application, when the plate body 11 and the limiting part 12 are made of metal, the limiting part 12 can be formed by bending one end of the sheet-like plate body 11 using a bending process. Furthermore, since metal materials have good strength and rigidity, the thickness of the plate body 11 and the limiting part 12 can be set to 0.5-0.7 mm, appropriately reducing the thickness of the plate body 11 and the limiting part 12 and saving material.

[0041] In this embodiment of the application, for example, when the plate body 11 and the limiting part 12 are made of composite materials, the composite material can be processed by pultrusion molding to obtain a limiting structure 10 having a plate body 11 and an extended limiting part 12. Since the strength of composite materials is less than that of metal materials, the thickness of the plate body 11 and the limiting part 12 can be set to 0.7-1 mm. Appropriately increasing the thickness of the plate body 11 and the limiting part 12 will give the limiting structure 10 better structural performance.

[0042] For example, in this embodiment of the application, when the plate body 11 and the limiting part 12 are made of plastic, the plastic material can be processed by injection molding to obtain the limiting structure 10 having the plate body 11 and the protruding limiting part 12. Since the strength of plastic material is less than that of metal material, the thickness of the plate body 11 and the limiting part 12 can be set to 0.7-1mm. By appropriately increasing the thickness of the plate body 11 and the limiting part 12, the limiting structure 10 can have better structural performance.

[0043] Optionally, in the embodiments of this application, the metal includes aluminum, copper, iron, or steel; the plastic includes polycarbonate (PC), polyethylene (PE), polypropylene (PP), or polyamide (PA); the composite material includes resin glass fiber, for example, epoxy resin glass fiber. Aluminum is lightweight, which is beneficial for the lightweighting of the limiting structure 10, and it is corrosion-resistant and easy to process; copper has good antibacterial and corrosion resistance, good ductility, is easy to process, and has a long fatigue life; iron or steel has high strength and low cost. PC has good impact resistance and high temperature resistance; PE has good corrosion resistance and low cost; PP has good fatigue resistance; PA has good wear resistance. Resin glass fiber has high strength and is easy to process and mold; epoxy resin glass fiber also has high rigidity, a large flexural modulus, is not easily deformed, and has good electrical insulation. Those skilled in the art can select the above materials according to actual needs. In this application embodiment, the specific materials of the plate body 11 and the limiting part 12 are not limited.

[0044] In summary, the limiting structure described in the embodiments of this application may include at least the following advantages: In this embodiment, the limiting structure is used for a battery cell assembly. The limiting structure includes: a plate body and a limiting part connected to the plate body; the plate body is used to connect the battery cell module of the battery cell assembly, and the plate body abuts against the side beam of the battery cell assembly; the limiting part is disposed at the top of the plate body, and the limiting part extends toward the battery cell module. Thus, a relatively stable and reliable connection between the limiting structure and the battery cell module is achieved through the plate body. A potting gap exists between the battery cell module and the side beam, and expanding foam is filled into the potting gap for potting. Since the plate body abuts against the side beam of the battery cell assembly, and the limiting part is located at the top of the plate body, the foaming height of the foaming adhesive between the battery cell module and the side beam can be limited by the limiting part located at the top of the plate body. This prevents the height of the final cured foaming adhesive from exceeding the height of the battery cell module, avoids the situation where the foaming adhesive does not cover the battery cell module, reduces the impact of the foaming adhesive on other structural components such as the battery cell assembly, and enables the battery cell module to have better electrical and safety performance.

[0045] This application also proposes a battery cell assembly, which includes a battery cell module 30, a side beam 40, and a limiting structure 10.

[0046] Optionally, in this embodiment, the number of limiting structures 10 is multiple, with at least two limiting structures 10 symmetrically arranged along the width direction of the cell module 30; and / or, at least two limiting structures 10 symmetrically arranged along the length direction of the cell module 30. In this way, the height of the foam at both ends of the cell module 30 along the length direction is limited by at least two limiting structures 10, and the height of the foam at both ends of the cell module 30 along the width direction is also limited by at least two limiting structures 10. The specific number and location of the limiting structures 10 are not limited in this embodiment.

[0047] In this embodiment, optionally, the battery cell assembly includes an adhesive 50, which is connected to the side of the plate body 11 of the limiting structure 10 near the battery cell module 30. This provides a relatively stable and reliable connection between the plate body 11 and the battery cell module 30 through the adhesive 50, and is simple and easy to implement. For example, the adhesive 50 can be double-sided tape, structural adhesive, etc., and the specific type of adhesive 50 is not limited in this embodiment.

[0048] In summary, the battery cell assembly described in the embodiments of this application may include at least the following advantages: In this embodiment, the battery cell assembly includes a battery cell module, a side beam, and the limiting structure. The limiting structure is used in the battery cell assembly and includes: a plate body and a limiting portion connected to the plate body; the plate body is used to connect the battery cell module of the battery cell assembly, and the plate body abuts against the side beam of the battery cell assembly; the limiting portion is disposed at the top of the plate body and extends towards the battery cell module. Thus, a relatively stable and reliable connection between the limiting structure and the battery cell module is achieved through the plate body, and a potting gap is provided between the battery cell module and the side beam, which is filled with expanding foam for potting. Since the plate body abuts against the side beam of the battery cell assembly, and the limiting part is located at the top of the plate body, the foaming height of the foaming adhesive between the battery cell module and the side beam can be limited by the limiting part located at the top of the plate body. This prevents the height of the final cured foaming adhesive from exceeding the height of the battery cell module, avoids the situation where the foaming adhesive does not cover the battery cell module, reduces the impact of the foaming adhesive on other structural components such as the battery cell assembly, and enables the battery cell module to have better electrical and safety performance.

[0049] This application also proposes a battery pack, which includes a cell assembly or a limiting structure 10.

[0050] For example, in the embodiments of this application, the battery pack can be a square battery pack, a cylindrical battery pack, a pouch battery pack, etc., and can be set according to actual needs. The specific type of battery pack is not limited in the embodiments of this application.

[0051] The battery pack described in this application embodiment may include at least the following advantages: In this embodiment, the battery pack includes the cell assembly or the limiting structure. The cell assembly includes a cell module, a side beam, and the limiting structure. The limiting structure is used for the cell assembly and includes: a plate body and a limiting part connected to the plate body; the plate body is used to connect the cell module of the cell assembly, and the plate body abuts against the side beam of the cell assembly; the limiting part is disposed at the top of the plate body and extends towards the cell module. In this way, a relatively stable and reliable connection between the limiting structure and the cell module is achieved through the plate body, and there is a potting gap between the cell module and the side beam, which is filled with expanding foam for potting. Since the plate body abuts against the side beam of the battery cell assembly, and the limiting part is located at the top of the plate body, the foaming height of the foaming adhesive between the battery cell module and the side beam can be limited by the limiting part located at the top of the plate body. This prevents the height of the final cured foaming adhesive from exceeding the height of the battery cell module, avoids the situation where the foaming adhesive does not cover the battery cell module, reduces the impact of the foaming adhesive on other structural components such as the battery cell assembly, and enables the battery cell module to have better electrical and safety performance.

[0052] This application also proposes a vehicle, which includes a battery pack, a cell assembly, or a limiting structure.

[0053] For example, in the embodiments of this application, the vehicle may include pure electric vehicle, hybrid vehicle, range-extended vehicle, fuel vehicle, etc. The type of vehicle may also include small car, medium car, sedan, truck, trailer, CDV (Car Derived Van, van based on car platform), MPV (multi-Purpose Vehicle), SUV (Sport Utility Vehicle), etc. The specific type of vehicle is not limited in the embodiments of this application.

[0054] The vehicle described in this application embodiment may include at least the following advantages: In this embodiment, the vehicle includes the battery pack, the cell assembly, or the limiting structure. The battery pack includes the cell assembly or the limiting structure. The cell assembly includes a cell module, a side beam, and the limiting structure. The limiting structure is used for the cell assembly and includes: a plate body and a limiting portion connected to the plate body; the plate body is used to connect the cell module of the cell assembly, and the plate body abuts against the side beam of the cell assembly; the limiting portion is disposed at the top of the plate body and extends towards the cell module. Thus, a relatively stable and reliable connection between the limiting structure and the cell module is achieved through the plate body, and a potting gap is provided between the cell module and the side beam, which is filled with expanding foam for potting. Since the plate body abuts against the side beam of the battery cell assembly, and the limiting part is located at the top of the plate body, the foaming height of the foaming adhesive between the battery cell module and the side beam can be limited by the limiting part located at the top of the plate body. This prevents the height of the final cured foaming adhesive from exceeding the height of the battery cell module, avoids the situation where the foaming adhesive does not cover the battery cell module, reduces the impact of the foaming adhesive on other structural components such as the battery cell assembly, and enables the battery cell module to have better electrical and safety performance.

[0055] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0056] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A limiting structure (10) for a battery cell assembly, characterized in that, The limiting structure (10) includes: a plate body (11) and a limiting part (12) connected to the plate body (11). The plate body (11) is used to connect the cell module (30) of the cell assembly, and the plate body (11) abuts against the side beam (40) of the cell assembly. The limiting part (12) is disposed at the top of the plate body (11) and extends toward the battery cell module (30).

2. The limiting structure (10) according to claim 1, characterized in that, The plate body (11) and the limiting part (12) form an L-shaped structure.

3. The limiting structure (10) according to claim 1, characterized in that, The plate body (11) and the limiting part (12) are integrally formed.

4. The limiting structure (10) according to any one of claims 1-3, characterized in that, The height of the plate body (11) is less than or equal to the height of the battery cell module (30).

5. The limiting structure (10) according to claim 4, characterized in that, The difference between the height of the plate body (11) and the height of the battery cell module (30) is less than or equal to 4 mm.

6. The limiting structure (10) according to any one of claims 1-3, characterized in that, The thickness of the plate body (11) and the limiting part (12) is any value between 0.5 and 1 mm.

7. The limiting structure (10) according to any one of claims 1-3, characterized in that, The plate body (11) and the limiting part (12) are made of one of the following materials: metal, plastic or composite material.

8. The limiting structure (10) according to claim 7, characterized in that, The metal includes aluminum, copper, iron, or steel; The plastic includes polycarbonate, polyethylene, polypropylene, or polyamide; The composite material includes resin glass fiber.

9. A battery cell assembly, characterized in that, The battery cell assembly includes a battery cell module (30), a side beam (40), and a limiting structure (10) as described in any one of claims 1-8.

10. The cell assembly according to claim 9, characterized in that, The number of the limiting structures (10) is multiple, and at least two of the limiting structures (10) are symmetrically arranged along the width direction of the battery cell module (30); And / or, at least two of the limiting structures (10) are symmetrically arranged along the length direction of the battery cell module (30).

11. The cell assembly according to claim 9, characterized in that, The battery cell assembly includes an adhesive (50) which is connected to the plate body (11) of the limiting structure (10) on the side near the battery cell module (30).

12. A battery pack, characterized in that, The battery pack includes the cell assembly as described in any one of claims 9-11, or the limiting structure (10) as described in any one of claims 1-8.

13. A vehicle, characterized in that, The vehicle includes the battery pack of claim 12, or the cell assembly of any one of claims 9-11, or the limiting structure (10) of any one of claims 1-8.

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