Battery assembly and vehicle

Abstract

The application discloses a battery assembly and a vehicle, the battery assembly comprising: a battery box, a battery unit and a closure, the battery box defines a mounting space, the battery box is provided with at least one side plate, the side plate is formed with a mounting hole for communicating the mounting space with the outside, the side plate is configured as an aluminum profile, the inner edge of the mounting hole communicates the inner space of the side plate with the mounting hole, the battery unit is arranged in the mounting space and is provided with an electric connection terminal, at least part of the electric connection terminal extends into the mounting hole, and the closure is arranged at the inner edge of the mounting hole, the closure is suitable for separating the inner space of the side plate from the mounting hole to block objects in the inner space of the side plate from entering the mounting hole, so that the influence of aluminum scraps on the battery can be reduced and the safety can be improved.

Description

Technical Field

[0001] This application relates to the field of vehicle batteries, and in particular to a battery module and a vehicle. Background Technology

[0002] In related technologies, to reduce energy consumption, increase driving range, and alleviate users' range anxiety in new energy vehicles, the vast majority of power battery boxes use aluminum profile welding technology instead of sheet metal stamping technology. The aluminum profile welding solution for power battery boxes has the advantages of being lightweight and having high structural strength. However, aluminum shavings are easily generated during the aluminum processing. Currently, aluminum shavings are mostly removed by high-pressure airflow blowing. Some aluminum shavings adhere to the processing holes and are difficult to remove, while some fine aluminum shavings accumulate in the corners of the aluminum profile cavity and cannot be removed. These unremovable aluminum shavings may move during the transportation, installation, and use of the battery box. After the power battery is assembled, the moved aluminum shavings may cause high-voltage insulation problems, or even high-voltage arcing, threatening users' property and lives. Therefore, how to reduce the impact of aluminum shavings on the battery and improve safety has become the technical problem that this application aims to solve. Utility Model Content

[0003] This application aims to address at least one of the technical problems existing in the prior art. To this end, one objective of this application is to provide a battery assembly that can reduce the impact of aluminum shavings on the battery and improve safety.

[0004] A battery assembly according to an embodiment of this application includes: a battery housing defining an installation space, the battery housing having at least one side plate, the side plate having a mounting hole communicating with the outside, the side plate being constructed of an aluminum profile, and the inner edge of the mounting hole communicating with the internal space of the side plate; a battery cell disposed within the installation space and having an electrical connection terminal, at least a portion of the electrical connection terminal extending into the mounting hole; and a closure disposed at the inner edge of the mounting hole, the closure being adapted to separate the internal space of the side plate from the mounting hole to prevent objects from the internal space of the side plate from entering the mounting hole.

[0005] According to the battery assembly of this application embodiment, by setting a sealing member, the internal space of the side plate is separated from the mounting hole. When aluminum shavings move during the transportation, installation and use of the battery box, due to the presence of the sealing member, the aluminum shavings cannot enter the mounting hole through the inner edge of the mounting hole, thereby directly avoiding the risk of aluminum shavings contacting the electrical connection terminals. Since the aluminum shavings cannot enter the mounting hole, they will not interfere with the battery's electrical connection system. This reduces the impact of aluminum shavings on the battery from the root, improves sealing and safety, and ensures the normal operation of the battery.

[0006] According to some embodiments of the present application, the battery assembly has a ring-shaped closure and at least a portion of the outer periphery of the closure is fitted to the inner edge of the mounting hole of the side plate.

[0007] According to some embodiments of the present application, in the battery assembly, a limiting portion is formed on the closure member, the limiting portion being used to abut against the wall surface of the side plate in the thickness direction or against the edge of the side plate to limit the movement of the closure member relative to the mounting hole.

[0008] According to some embodiments of the present application, the battery assembly includes: a contact plate, wherein the contact plates are configured as a plurality of contacts and are sequentially connected to form an annular structure; a limiting flange, wherein the limiting flange is disposed on one side edge of at least one of the contact plates in the direction of extending the mounting hole and the limiting flange extends perpendicularly to the contact plate; and at least one of the contact plates and the limiting flange is provided with the limiting portion.

[0009] According to some embodiments of the present application, the battery assembly has a mounting hole structured as a polygonal hole, and multiple contact plates are configured to be fitted and attached to multiple sides of the polygonal hole one by one, with each contact plate corresponding to and closing one side wall of the polygonal hole; wherein at least one of the contact plates has a limiting portion formed thereon, and the limiting portion is configured as a limiting protrusion protruding toward the side wall of the polygonal hole.

[0010] According to some embodiments of the present application, the battery assembly with the limiting protrusion is constructed as a wedge-shaped protrusion that protrudes in the direction toward the sidewall of the polygonal hole and gradually decreases in thickness, the wedge-shaped protrusion having a stop surface that abuts against the side plate in the direction of the mounting hole.

[0011] According to some embodiments of the present application, the battery assembly has a deformable portion formed on the contact plate to selectively extend in the through direction of the mounting hole.

[0012] According to some embodiments of the present application, the deformable portion of the battery assembly is configured as a continuous bent section disposed on the contact plate.

[0013] According to some embodiments of the battery assembly of this application, the enclosure is constructed as an insulating member with a thickness of m and satisfies: 0.3mm≤m≤0.5mm.

[0014] The vehicle according to an embodiment of this application is briefly described below.

[0015] The vehicle according to the embodiments of this application includes the battery pack of any of the above embodiments. Since the vehicle according to this embodiment is equipped with the battery pack of any of the above embodiments, the vehicle according to this application has better safety. Because the sealing component effectively prevents aluminum shavings from entering the mounting hole, it avoids high-voltage insulation problems and high-voltage arcing risks caused by aluminum shavings, making the power battery system more stable and reliable during vehicle operation. Under complex operating conditions such as bumps, rapid acceleration, and sudden braking, the battery pack will not experience short circuits or leakage due to aluminum shavings moving, reducing the probability of serious accidents such as vehicle spontaneous combustion and explosion, and greatly protecting the lives and property of passengers and the vehicle.

[0016] Additional aspects and advantages of this application 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 this application. Attached Figure Description

[0017] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0018] Figure 1 This is a schematic diagram of the battery assembly structure according to an embodiment of this application;

[0019] Figure 2 This is a schematic diagram of the structure of the enclosure in the battery assembly according to an embodiment of this application;

[0020] Figure 3 This is a side view of the enclosure structure in a battery assembly according to an embodiment of this application;

[0021] Figure 4 This is a cross-sectional structural diagram of the closure component and the battery cell in the battery assembly according to an embodiment of this application.

[0022] Figure label:

[0023] 100. Battery components;

[0024] 1. Battery housing; 11. Installation space; 12. Side panel; 13. Mounting holes;

[0025] 2. Battery unit; 21. Electrical connection terminal;

[0026] 3. Closure component; 31. Limiting part; 311. Stopping surface; 32. Contact plate; 321. Deformation part; 33. Limiting flange. Detailed Implementation

[0027] The embodiments of this application are described in detail below. 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 application, and should not be construed as limiting this application.

[0028] The following is for reference. Figures 1-4 A battery assembly 100 according to an embodiment of this application is described.

[0029] According to an embodiment of this application, a battery assembly 100 includes: a battery housing 1, a battery cell 2, and a closure 3. The battery housing 1 defines an installation space 11. The battery housing 1 is provided with at least one side plate 12. The side plate 12 has a mounting hole 13 formed on it to communicate with the outside of the installation space 11. The side plate 12 is constructed of an aluminum profile. The inner edge of the mounting hole 13 communicates with the internal space of the side plate 12 and the mounting hole 13. The battery cell 2 is disposed in the installation space 11 and is provided with an electrical connection terminal 21. At least a portion of the electrical connection terminal 21 extends into the mounting hole 13. The closure 3 is disposed on the inner edge of the mounting hole 13. The closure 3 is adapted to separate the internal space of the side plate 12 from the mounting hole 13 to prevent objects in the internal space of the side plate 12 from entering the mounting hole 13.

[0030] The battery housing 1 of the battery assembly 100 has a side panel 12 made of aluminum profile. During manufacturing, aluminum shavings are inevitably generated, and some fine shavings accumulate in the corners of the aluminum profile cavity, making them difficult to remove. These residual aluminum shavings may move during transportation, installation, and use of the battery housing 1. The battery housing 1 has a mounting hole 13 that connects the mounting space 11 to the outside, and the inner edge of the mounting hole 13 connects the internal space of the side panel 12 to the mounting hole 13. Aluminum shavings are highly likely to enter the mounting hole 13 through this channel and come into contact with the battery unit 2. The battery unit 2 is located within the mounting space 11 and has an electrical connection terminal 21, at least a portion of which extends into the mounting hole 13. If aluminum shavings enter the mounting hole 13 and come into contact with the electrical connection terminal 21, since aluminum is a good conductor, it could lead to high-voltage insulation problems, causing high-voltage arcing, which seriously threatens the user's property and life safety.

[0031] In this embodiment, the battery assembly 100 is provided with a sealing member 3, which is located on the inner edge of the mounting hole 13. This separates the internal space of the side plate 12 from the mounting hole 13, cutting off the channel for aluminum shavings to enter the mounting hole 13 from the internal space of the aluminum profile. Due to the obstruction of the sealing member 3, the aluminum shavings cannot contact the electrical connection terminal 21 through the mounting hole 13, thus avoiding interference with the normal operation of the battery unit 2 and preventing high-voltage insulation failure and high-voltage arcing caused by aluminum shavings.

[0032] Meanwhile, the sealing component 3 separates the internal space of the side plate 12 from the mounting hole 13, effectively sealing the connection between the mounting hole 13 and the internal space of the side plate 12. Originally, the inner edge of the mounting hole 13 was connected to the internal space of the side plate 12, creating a gap that was prone to air and water leakage. After the sealing component 3 is installed, this gap is filled, preventing direct communication between the mounting hole 13 and the internal space of the side plate 12. This significantly reduces the possibility of gas or liquid entering or exiting through this area. In the overall structure of the battery housing 1, the mounting hole 13 is a crucial connection between the external environment and the internal space of the battery. The sealing effect of the sealing component 3 on the mounting hole 13 is significant. This significantly improves the overall sealing of the battery housing 1. During vehicle operation, in rainy or humid environments, external moisture is difficult to enter the battery through the mounting holes 13. In dusty environments, dust is also unable to enter through the mounting holes 13, effectively protecting the working environment of the battery unit 2. The sealing component 3 makes the internal environment of the battery assembly 100 more stable, reducing the possibility of battery performance degradation or failure due to external interference. During long-term use of the battery assembly 100, a stable internal environment helps to extend battery life and reduce the probability of safety accidents caused by battery failure, thus comprehensively improving the safety of the battery assembly 100.

[0033] In short, by setting the sealing component 3, the internal space of the side plate 12 is separated from the mounting hole 13. When aluminum shavings move during the transportation, installation and use of the battery box 1, the presence of the sealing component 3 prevents the aluminum shavings from entering the mounting hole 13 through the inner edge of the mounting hole 13. This directly avoids the risk of aluminum shavings coming into contact with the electrical connection terminal 21. Since the aluminum shavings cannot enter the mounting hole 13, they will not interfere with the battery's electrical connection system. This reduces the impact of aluminum shavings on the battery from the root, improves sealing and safety, and ensures the normal operation of the battery.

[0034] According to some embodiments of the present application, the battery assembly 100 has a closure 3 configured as annular, and at least a portion of the outer periphery of the closure 3 is fitted against the inner edge of the mounting hole 13 of the side plate 12.

[0035] In this application, the sealing member 3 is constructed in a ring shape. The ring structure can form a complete enclosure around the inner edge of the mounting hole 13. When aluminum shavings move from the internal space of the side plate 12 to the mounting hole 13, the ring sealing member 3 can block them regardless of which direction they approach the inner edge of the mounting hole 13. Compared with a non-ring structure, the ring sealing member 3 has no blind spots. The ring sealing member 3 achieves 360-degree isolation of the mounting hole 13 through its complete ring shape, minimizing the possibility of aluminum shavings entering the mounting hole 13, further reducing the risk of aluminum shavings contacting the electrical connection terminal 21, and more effectively ensuring the normal operation of the battery electrical connection system. It also reduces safety hazards caused by aluminum shavings. The ring-shaped and close-fitting sealing member 3 structure can maintain good stability during the long-term use of the battery assembly 100. The ring structure makes the sealing member 3 subject to uniform force, and it is not easy to deform or shift under the action of external forces such as vibration and impact generated by vehicle driving. The fitting setting further enhances the connection stability between the seal 3 and the side plate 12. By increasing the contact area and tightness, the seal 3 is fixed to the inner edge of the mounting hole 13, ensuring that the seal 3 continues to play its role in blocking aluminum shavings and improving sealing performance. This reduces safety issues caused by the failure of the seal 3, extends the service life of the battery pack 100, provides the vehicle with a more durable and reliable power guarantee, and reduces maintenance costs and safety risks.

[0036] According to some embodiments of the present application, in the battery assembly 100, a limiting portion 31 is formed on the closure 3. The limiting portion 31 is used to stop against the wall surface of the side plate 12 in the thickness direction or against the edge of the side plate 12 to limit the movement of the closure 3 relative to the mounting hole 13.

[0037] The limiting portion 31 formed on the closure 3 effectively restricts the movement of the closure 3 relative to the mounting hole 13 by abutting against the wall surface of the side plate 12 in the thickness direction or against the edge of the side plate 12. From a mechanical point of view, when the limiting portion 31 abuts against the wall surface or edge of the side plate 12, a reverse supporting force is generated, which counteracts the effect of external force on the closure 3. When the vehicle is driving on a bumpy road, the external force generated by the vibration attempts to push the closure 3 to move, but the abutting structure between the limiting portion 31 and the side plate 12 will form a stable force relationship, keeping the closure 3 in its original position and in a stable installation state. This ensures that the closure 3 is always tightly fitted to the inner edge of the mounting hole 13, continuously playing the role of blocking aluminum chips and sealing, and preventing aluminum chips from entering the mounting hole 13 or the seal from failing due to the displacement of the closure 3. This ensures that the battery assembly 100 can operate stably under complex working conditions.

[0038] According to some embodiments of the present application, the battery assembly 100 includes a closure 3, a contact plate 32 and a limiting flange 33. The contact plates 32 are configured as a plurality of plates and are connected to each other in sequence to form an annular structure. The limiting flange 33 is disposed on one side edge of at least one contact plate 32 in the extension direction of the mounting hole 13 and extends perpendicularly to the contact plate 32. A limiting portion 31 is provided on at least one of the contact plates 32 and the limiting flange.

[0039] Multiple contact plates 32 are connected to each other in sequence to form a ring structure. The combined ring design can better adapt to the shape of the mounting hole 13. The ring structure of the contact plates 32 can form a continuous sealing boundary around the mounting hole 13. The limiting flange 33 extends perpendicular to the contact plate 32 and is set on one side edge of at least one contact plate 32 in the extension direction of the mounting hole 13, providing additional mechanical support for the closure 3. When an external force is applied to the closure 3, the limiting flange 33 contacts the wall or edge of the side plate 12 in the thickness direction, forming a stop relationship. According to the principle of mechanical balance, the external force on the limiting flange 33 will be transmitted to the side plate 12 in the direction perpendicular to the contact plate 32, generating a reverse support force, which enhances the connection stability between the closure 3 and the side plate 12, so that the closure 3 can still maintain a tight fit with the inner edge of the mounting hole 13 under complex working conditions, continuously play the function of blocking aluminum chips and sealing, and effectively ensure the stable operation of the battery assembly 100.

[0040] At least one of the contact plate 32 and the limiting flip plate is provided with a limiting part 31, which further enhances the installation stability and performance of the closure 3. The limiting part 31 and the side plate 12 have a stopping effect, which can further restrict the movement of the closure 3 relative to the mounting hole 13. Whether it is translation or rotation, it can be effectively constrained. From the installation point of view, the existence of the limiting part 31 provides a clear positioning mark for the installer. During the assembly process, the closure 3 can be installed quickly and accurately according to the cooperation relationship between the limiting part 31 and the side plate 12, which greatly improves the production assembly efficiency.

[0041] According to some embodiments of the present application, the battery assembly 100 has a mounting hole 13 configured as a polygonal hole, and multiple contact plates 32 configured to be fitted to each of the multiple sides of the polygonal hole, with each contact plate 32 corresponding to a side wall of the polygonal hole; wherein at least one contact plate 32 has a limiting portion 31 formed on it, and the limiting portion 31 is configured as a limiting protrusion protruding toward the side wall of the polygonal hole.

[0042] The mounting hole 13 is a polygonal hole. The contact plate 32 is fitted to the multiple sides of the polygonal hole one by one, which can closely fit the geometry of the polygonal hole. Compared with the combination of the circular or irregularly shaped mounting hole 13 and the closure 3, the regular structure of the polygon makes the fit between the contact plate 32 and the sides of the mounting hole 13 more precise, and the gap between the two can be effectively controlled within a small range. At least one limiting protrusion formed on the contact plate 32 is configured to protrude toward the sidewall of the polygonal hole, providing a stable positioning and constraint for the closure 3. The limiting protrusion cooperates with the sidewall of the polygonal hole. When an external force attempts to push the closure 3 to move, the limiting protrusion will act as a stop against the sidewall of the hole. The reverse force generated by the stop relationship can counteract the influence of the external force on the closure 3, restricting the translation and rotation of the closure 3 within the mounting hole 13. The stop between the limiting protrusion and the sidewall of the polygonal hole will firmly fix the closure 3 in its original position, ensuring that the closure 3 is always in close contact with the sidewall of the mounting hole 13, continuously playing the role of blocking aluminum chips and sealing, ensuring the stable operation of the battery assembly 100 under complex working conditions, and reducing safety hazards caused by the displacement of the closure 3.

[0043] According to some embodiments of the present application, the battery assembly 100 has a limiting protrusion configured as a wedge-shaped protrusion that protrudes in the direction toward the sidewall of the polygonal hole and gradually decreases in thickness. The wedge-shaped protrusion has a stop surface 311 that abuts against the side plate 12 in the through direction of the mounting hole 13.

[0044] The limiting protrusion is a wedge-shaped protrusion that protrudes towards the sidewall of the polygonal hole and gradually decreases in thickness. It provides a guiding function for the installation process of the closure 3. When the closure 3 is installed into the polygonal mounting hole 13, due to the characteristic of the wedge-shaped protrusion gradually decreasing in thickness, the installer can easily introduce the closure 3 into the mounting hole 13 without precise alignment. As the closure 3 is gradually pushed in, the wedge-shaped protrusion can automatically guide it to the correct position, reducing the installation difficulty and the operation accuracy requirements.

[0045] The wedge-shaped protrusion has a stop surface 311 that abuts against the side plate 12 in the direction of the mounting hole 13. This enhances the connection stability between the closure 3 and the side plate 12. When an external force attempts to displace the closure 3 within the mounting hole 13, the stop surface 311 of the wedge-shaped protrusion comes into close contact with the side plate 12, generating strong friction and reaction forces. According to mechanical principles, the contact area and pressure distribution between the stop surface 311 and the side plate 12 are uniform, effectively dispersing the influence of external forces on the closure 3. The stable connection ensures that the closure 3 always fits tightly against the side wall of the polygonal mounting hole 13, continuously performing its functions of blocking aluminum shavings and sealing, effectively reducing safety hazards caused by loosening of the closure 3.

[0046] According to some embodiments of the present application, the battery assembly 100 has a deformable portion 321 formed on the contact plate 32 to selectively extend in the through direction of the mounting hole 13.

[0047] The deformable portion 321 formed on the contact plate 32 can selectively extend in the through direction of the mounting hole 13. During the manufacturing process of the battery assembly 100, due to errors in the processing technology and design differences between different batches of products, the size of the mounting hole 13 may have certain tolerances. The traditional fixed structure of the contact plate 32 of the sealing component 3 makes it difficult to adapt to the slight changes in the size of the mounting hole 13, which may lead to installation difficulties or poor sealing. However, the contact plate 32 with the deformable portion 321 can be extended and adjusted according to the actual size of the mounting hole 13. When the size of the mounting hole 13 is slightly larger, the deformable portion 321 can extend into the mounting hole 13 to fill the excess space and ensure that the contact plate 32 fits tightly with the side wall of the mounting hole 13. When the size of the mounting hole 13 is slightly smaller, the deformable portion 321 can shrink appropriately through its own elasticity to avoid installation failure due to size mismatch. The deformable portion 321 can adapt to size fluctuations, enabling the sealing component 3 to be installed smoothly, improving the versatility of the product and the assembly success rate during the production process, and reducing the scrap rate and production costs caused by size mismatch.

[0048] According to some embodiments of the present application, the battery assembly 100 has a deformable portion 321 configured as a continuous bent section disposed on the contact plate 32.

[0049] The deformation section 321 is constructed as a continuous bending segment on the contact plate 32. The design of the continuous bending segment allows the contact plate 32 to extend or contract controllably in the direction of the mounting hole 13 through changes in the bending angle. At the same time, the continuous bending segment can maintain close contact with the side wall of the mounting hole 13 through its own elastic deformation. When the battery box 1 is displaced due to vibration, the bending segment will change its bending angle accordingly with the movement of the contact plate 32, continuously filling the gap between it and the hole wall. When the temperature changes cause the material to expand and contract, the elastic characteristics of the bending segment can absorb the stress generated by the expansion or contraction, maintaining a tight fit of the sealing surface. In a high-temperature environment, the battery box 1 expands, the size of the mounting hole 13 increases, and the continuous bending segment will extend and increase the sealing area. In a low-temperature environment, it elastically contracts to prevent external moisture, dust and other impurities from entering the battery, effectively avoiding battery failure caused by sealing failure, and providing stable and reliable sealing protection for the battery assembly 100.

[0050] According to some embodiments of the present application, the battery assembly 100 has a sealing member 3 constructed as an insulating member with a thickness of m that satisfies the following condition: 0.3mm ≤ m ≤ 0.5mm.

[0051] The sealing component 3 is constructed as an insulating component. During long-term use of the battery pack 100, static electricity may be generated inside the battery box 1 due to external factors. The insulating sealing component 3 can prevent static electricity from being conducted to the electrical connection terminal 21, thus preventing electrical faults caused by static electricity. In a dry environment, static electricity generated by friction between the battery box 1 and surrounding objects will be isolated by the insulating sealing component 3 and will not affect the internal electrical system of the battery pack 100. This provides a stable and safe electrical operating environment for the battery pack 100, ensuring the safety of users' lives and property.

[0052] The thickness m of the sealing component 3 satisfies 0.3mm ≤ m ≤ 0.5mm. From the perspective of installation compatibility, this thickness ensures that the sealing component 3 has sufficient strength and rigidity to prevent deformation during installation, ensuring a tight fit with the inner edge of the mounting hole 13 and achieving a good sealing effect. However, it also avoids excessive thickness that could lead to installation difficulties or occupy too much internal space in the battery box 1, affecting the layout and installation of the battery unit 2. Specifically, when the thickness of the sealing component 3 is greater than 0.5mm, its volume and weight increase accordingly, leading to difficulties in fitting with the mounting hole 13 during installation. Due to the increased thickness, the tolerance fit between the sealing component 3 and the inner edge of the mounting hole 13 becomes more difficult, potentially resulting in installation failure. When the thickness of the sealing component 3 is less than 0.3mm, its strength and rigidity are insufficient to meet actual usage requirements. During installation, due to its thinness, the sealing component 3 is prone to deformation, failing to ensure a tight fit with the inner edge of the mounting hole 13, resulting in decreased sealing performance.

[0053] In some embodiments of this application, the thickness of the sealing member 3 is greater than the depth of the mounting hole 13 to ensure that the sealing member 3 is in a compressed state after being in place, fits tightly with the mounting hole 13, and better blocks aluminum chips.

[0054] The vehicle according to an embodiment of this application is briefly described below.

[0055] The vehicle according to the embodiments of this application includes the battery pack 100 of any of the above embodiments. Since the vehicle according to this embodiment is equipped with the battery pack 100 of any of the above embodiments, the vehicle according to this application has better safety. Because the sealing member 3 effectively prevents aluminum shavings from entering the mounting hole 13, it avoids high-voltage insulation problems and high-voltage arcing risks caused by aluminum shavings, making the power battery system more stable and reliable during vehicle operation. Under complex operating conditions such as bumps, rapid acceleration, and sudden braking, the battery pack 100 will not experience short circuits, leakage, or other dangerous situations due to the movement of aluminum shavings, reducing the probability of serious accidents such as vehicle spontaneous combustion and explosion, and greatly protecting the lives and property of passengers and the vehicle.

[0056] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "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 based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application 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 application.

[0057] In the description of this application, "first feature" and "second feature" may include one or more of the features.

[0058] In the description of this application, "multiple" means two or more.

[0059] In the description of this application, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or the first and second features being in contact through another feature between them.

[0060] In the description of this application, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicate that the first feature is at a higher horizontal level than the second feature.

[0061] 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 this application. 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.

[0062] Although embodiments of this application 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 this application, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery assembly, characterized in that, include: A battery housing (1) defines an installation space (11). The battery housing (1) is provided with at least one side plate (12). The side plate (12) has a mounting hole (13) that connects the installation space (11) to the outside. The side plate (12) is constructed of aluminum profile. The inner edge of the mounting hole (13) connects the internal space of the side plate (12) with the mounting hole (13). A battery unit (2) is disposed in the mounting space (11) and is provided with an electrical connection terminal (21), at least a portion of which extends into the mounting hole (13); A closure (3) is disposed on the inner edge of the mounting hole (13), the closure (3) being adapted to separate the interior space of the side plate (12) from the mounting hole (13) to prevent objects in the interior space of the side plate (12) from entering the mounting hole (13).

2. The battery assembly according to claim 1, characterized in that, The closure (3) is annular in shape and at least a portion of the outer periphery of the closure (3) is fitted with the inner edge of the mounting hole (13) of the side plate (12).

3. The battery assembly according to claim 2, characterized in that, A limiting portion (31) is formed on the closure (3), which is used to abut against the wall surface of the side plate (12) in the thickness direction or against the edge of the side plate (12) to restrict the movement of the closure (3) relative to the mounting hole (13).

4. The battery assembly according to claim 3, characterized in that, The closure (3) includes: Contact plate (32), wherein multiple contact plates (32) are constructed and connected to each other in sequence to form a ring structure; A limiting flange (33) is provided on one side edge of at least one of the contact plates (32) in the direction of extension of the mounting hole (13) and the limiting flange (33) extends perpendicular to the contact plate (32); The limiting part (31) is provided on at least one of the contact plate (32) and the limiting flip plate.

5. The battery assembly according to claim 4, characterized in that, The mounting hole (13) is constructed as a polygonal hole, and the contact plate (32) is constructed as a plurality of them and is fitted to each of the plurality of sides of the polygonal hole one by one. Each contact plate (32) corresponds to and closes one side wall of the polygonal hole. in At least one of the contact plates (32) has a limiting portion (31) formed thereon, the limiting portion (31) being configured as a limiting protrusion protruding toward the sidewall of the polygonal hole.

6. The battery assembly according to claim 5, characterized in that, The limiting protrusion is constructed as a wedge-shaped protrusion that protrudes in the direction toward the sidewall of the polygonal hole and gradually decreases in thickness. The wedge-shaped protrusion has a stop surface (311) that abuts against the side plate (12) in the direction through which the mounting hole (13) passes.

7. The battery assembly according to claim 4, characterized in that, A deformable portion (321) is formed on the contact plate (32) to selectively extend in the through direction of the mounting hole (13).

8. The battery assembly according to claim 7, characterized in that, The deformable part (321) is constructed as a continuous bent section disposed on the contact plate (32).

9. The battery assembly according to any one of claims 1-8, characterized in that, The closure (3) is constructed as an insulating component with a thickness of m and satisfies the following condition: 0.3mm≤m≤0.5mm.

10. A vehicle, characterized in that, Includes the battery assembly (100) according to any one of claims 1-9.

Images