Battery box body, battery pack and vehicle

Abstract

The invention provides a battery box body, a battery pack and a vehicle, relates to the technical field of battery structures, and is used for solving the problem of sealing failure easily caused by improper assembly between an upper cover and a lower box body of an existing battery box body. The battery box body comprises a bottom plate, a frame, a sealing piece and a cover plate, the frame is located on one side of the bottom plate and arranged around the bottom plate by a circle. The sealing member includes a first sealing portion. The first sealing part is arranged on the frame and located on the side, away from the bottom plate, of the frame. And the first sealing part is arranged along the circumferential direction of the frame. The cover plate covers the side, away from the bottom plate, of the frame and abuts against the first sealing part. And in the first direction, the size of the first sealing part is smaller than or equal to 35 mm. The first direction is perpendicular to the extending direction of the first sealing part and is perpendicular to the arrangement direction of the cover plate and the first sealing part. The battery box body has a good sealing effect.

Description

Technical Field

[0001] The present application relates to the field of battery structure technology, specifically to a battery box, a battery pack and a vehicle Background Art

[0002] With the improvement of people's living standards, cars have gradually become an essential means of transportation for most families. Among them, electric vehicles have gradually occupied the main automobile market with their advantages such as no pollution and energy saving.

[0003] The battery pack is a crucial component of electric vehicles, providing the vehicle's kinetic energy. The battery pack's electrical energy drives the drive mechanism, which in turn propels the vehicle forward. The sealing performance of the battery pack is a crucial factor in its safety. Typically, a battery pack enclosure consists of an upper cover and a lower housing.

[0004] The upper cover is arranged on the lower box body. After the upper cover and the lower box body of the battery pack are assembled, the sealing failure may occur due to improper box body structure or assembly. Summary of the Invention

[0005] The purpose of the present application is to provide a battery box, a battery pack and a vehicle, which are used to solve the problem of sealing failure between the upper cover and the lower box of the existing battery box due to improper assembly.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is as follows:

[0007] In a first aspect, an embodiment of the present application provides a battery case comprising a bottom plate, a frame, a seal, and a cover plate. The frame is located on one side of the bottom plate and is arranged around the bottom plate. The seal comprises a first sealing portion. The first sealing portion is arranged on the frame and is located on the side of the frame away from the bottom plate. The first sealing portion is arranged along the circumference of the frame. The cover plate is arranged on the side of the frame away from the bottom plate and abuts against the first sealing portion. Particularly, along the first direction, the size of the first sealing portion is less than or equal to 35 mm. The first direction is perpendicular to the extension direction of the first sealing portion, and is perpendicular to the arrangement direction of the cover plate and the first sealing portion.

[0008] According to the above-mentioned technical means, the battery case provided in the embodiment of the present application, the bottom plate and the frame can enclose an installation space to realize the placement function of the power battery. Since the first sealing portion is arranged on the frame, it is located on the side of the frame away from the bottom plate. The first sealing portion is arranged along the circumference of the frame. The cover plate is arranged on the side of the frame away from the bottom plate, and abuts against the first sealing portion. The first sealing portion can seal the connection position between the cover plate and the frame, so that after the cover plate and the frame are connected, the overall sealing performance of the battery case is good. At the same time, since the size of the first sealing portion along the first direction is less than or equal to 35 mm, the size of the first sealing portion is small, so that the size of the seal is small, which can save material consumption during the manufacturing process and play a role in saving costs.

[0009] In one possible embodiment, the sealing member further includes a second sealing portion. The second sealing portion is connected to the first sealing portion, is located on a peripheral side of the cover plate, and is disposed around the periphery of the cover plate. The second sealing portion is configured to abut against the vehicle body.

[0010] According to the above technical means, since the second sealing portion is located on the peripheral side of the cover plate and is arranged around the cover plate, the second sealing portion can abut against the vehicle body structure to achieve a seal between the frame and the vehicle body structure. The seal can simultaneously achieve a seal between the cover plate and the frame, and a seal between the frame and the vehicle body structure, eliminating the need to set up multiple seals to achieve a seal between the cover plate and the frame, and between the frame and the vehicle body structure, thereby simplifying the composition of the battery pack.

[0011] In a possible embodiment, along the first direction, the outer wall of the first sealing portion is staggered with the outer wall of the frame and is located inside the outer wall of the frame. The outer wall of the cover plate is flush with the outer wall of the first sealing portion.

[0012] According to the above technical means, since the first sealing portion is staggered with the outer wall of the cover plate, the outer wall of the cover plate is flush with the outer wall of the first sealing portion, and the connection between the cover plate and the frame can be sealed by the seal. When the frame size is fixed, since the outer wall of the cover plate is located on the inner side of the outer wall of the frame, the size of the cover plate can be designed to be relatively small, thereby reducing the material consumption of the cover plate and occupying less space, thereby facilitating subsequent installation and placement.

[0013] In a possible implementation, along the first direction, the outer wall of the first sealing portion is flush with the outer wall of the frame, and the outer wall of the cover plate is flush with the outer wall of the first sealing portion.

[0014] In a possible embodiment, there are multiple sealing members, which are arranged end to end in abutment with each other in sequence along the circumference of the frame.

[0015] According to the above technical means, by providing multiple sealing members connected end to end along the circumference of the frame, a better seal can be achieved between the cover plate and the frame. When there are multiple sealing members, the sealing members can be designed in a strip shape. During installation, automated equipment can be used to directly bond the sealing members to the frame, eliminating the need for manual bonding, improving bonding efficiency and saving labor costs.

[0016] In a possible implementation, along the arrangement direction of the upper cover and the first sealing portion, a size of the second sealing portion is less than or equal to 35 mm.

[0017] According to the above technical means, the size of the second sealing portion is also relatively small, which can further reduce the material loss of the sealing component.

[0018] In a possible embodiment, a protrusion is formed on a side of the cover plate close to the sealing member, and the protrusion abuts against the sealing member.

[0019] According to the above technical means, the raised portion can compress the seal, making it more effective. Thus, the raised portion can replace bolts, thereby reducing the number of bolts connecting the cover plate and the frame, thereby reducing the overall weight of the battery pack and, in turn, the overall weight of the vehicle. At the same time, because the raised portion can better compress the seal, the seal has a good compression capacity. In this way, the sealing effect of the first seal can be maintained while the dimension of the first seal along the first direction is relatively small.

[0020] In a possible embodiment, a recessed portion is formed on a side of the cover plate away from the sealing member, and the recessed portion forms a raised portion on a side of the cover plate close to the sealing member.

[0021] According to the above technical means, when manufacturing the cover plate, the raised portion can be formed by only stretching or stamping the cover plate, and the manufacturing process is simple and convenient.

[0022] In a possible implementation, the protrusion is in the shape of an elongated strip or a hemispherical shape.

[0023] According to the above technical means, when the raised portion is elongated, the raised portion can abut against the seal at more locations, allowing more locations to be compressed, thereby ensuring the sealing effect of the seal. When the raised portion is hemispherical, the location where the raised portion abuts against the seal is an arc surface, which can reduce the probability of damage to the seal caused by the raised portion abutting against the seal, thereby ensuring the sealing effect of the seal.

[0024] In a possible implementation, along the radial direction of the frame, the protrusion abuts against the middle portion of the sealing element.

[0025] According to the above technical means, since the protrusion abuts against the middle of the seal, the positions of both side edges of the seal can produce a good amount of compression under the force of the protrusion, thereby achieving a better sealing effect.

[0026] In a possible embodiment, there are multiple raised portions, which are spaced apart along the circumference of the frame.

[0027] According to the above technical means, by providing a plurality of protrusions, the plurality of protrusions can replace more bolts to abut against the seal, thereby further reducing the number of bolts and further reducing the weight of the battery pack.

[0028] In a second aspect, an embodiment of the present application provides a battery pack comprising any battery case in the first aspect.

[0029] Since the battery pack provided in the embodiment of the present application includes any one of the battery cases in the first aspect, it can solve the same technical problems as the above-mentioned battery cases and achieve the same technical effects, and will not be repeated here.

[0030] In a possible implementation, the battery pack is one of a CTV battery pack, a CTC battery pack, a CTP battery pack, or a CTB battery pack.

[0031] In a third aspect, an embodiment of the present application provides a vehicle comprising any battery pack in the second aspect.

[0032] Since the vehicle provided in the embodiment of the present application includes any one of the battery packs in the second aspect, it can solve the same technical problems as the above-mentioned battery packs and achieve the same technical effects, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 An exploded view of a battery box provided in an embodiment of the present application;

[0034] Figure 2 A schematic diagram of a partial structure of a battery box during assembly provided in an embodiment of the present application;

[0035] Figure 3 A top view of a cover plate provided in an embodiment of the present application;

[0036] Figure 4 A partial cross-sectional view of an assembled battery box provided in an embodiment of the present application;

[0037] Figure 5 for Figure 4 A partial enlarged view of point A in the middle;

[0038] Figure 6 An exploded view of another battery box provided in an embodiment of the present application;

[0039] Figure 7 An exploded view of another battery box provided in an embodiment of the present application;

[0040] Figure 8 A partial cross-sectional view of another assembled battery box provided in an embodiment of the present application;

[0041] Figure 9 A partial cross-sectional view of another assembled battery box provided in an embodiment of the present application;

[0042] Figure 10 A partial cross-sectional view of another assembled battery box provided in an embodiment of the present application;

[0043] Figure 11 A partially enlarged view of a cover plate provided in an embodiment of the present application;

[0044] Figure 12 This is one of the partial enlarged views of a battery box provided in an embodiment of the present application;

[0045] Figure 13 This is the second partially enlarged view of a battery box provided in an embodiment of the present application.

[0046] Description of reference numerals;

[0047] 100 - battery box; 10 - bottom plate; 20 - frame; 30 - seal; 301 - first sealing part; 302 - second sealing part; 40 - cover plate; 401 - raised part; 402 - bolt hole; 50 - bolt; 60 - vehicle body structure. DETAILED DESCRIPTION

[0048] In order to enable ordinary people in the art to better understand the technical solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

[0049] It should be noted that the terms "first," "second," and the like in the specification and claims of this application and the accompanying drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or precedence. It should be understood that the terms used in this manner are interchangeable where appropriate so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein. The implementations described in the following exemplary embodiments do not represent all implementations consistent with the present application. Instead, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

[0050] An embodiment of the present application provides a vehicle, which may be an electric vehicle. The vehicle may include a battery pack, which may provide a power source for the vehicle. It is understood that to perform basic vehicle functions, the vehicle may also include a drive mechanism. The drive mechanism may be electrically connected to the battery pack, and the electrical energy generated by the battery pack may drive the drive mechanism, thereby enabling the drive mechanism to drive the vehicle.

[0051] The following describes the battery pack provided in an embodiment of the present application. The battery pack may include a battery case and a power battery. The battery case may have a mounting cavity formed within it, and the power battery may be disposed within the mounting cavity. Thus, the battery case can separate the power battery from the outside world, providing protection and isolation for the power battery.

[0052] It is known that the sealing performance of the battery pack is an important factor in the safety performance of the battery pack. In order to make the power battery have better safety performance, the battery box needs to have good sealing performance. Based on this, the embodiment of the present application provides a battery box, such as Figure 1 and Figure 2 As shown, Figure 1 This is an exploded view of a battery box 100 provided in an embodiment of the present application. Figure 2 This is a partial structural diagram of a battery case 100 assembled according to an embodiment of the present application. The battery case 100 may include a base plate 10, a frame 20, a seal 30, and a cover plate 40. The frame 20 is located on one side of the base plate 10 and surrounds the base plate 10. Thus, the base plate 10 and the frame 20 enclose an installation space to accommodate the power battery.

[0053] The seal 30 includes a first sealing portion 301. The first sealing portion 301 is provided on the frame 20, and is located on the side of the frame 20 away from the bottom plate 10. The first sealing portion 301 is provided along the circumference of the frame 20. The cover plate 40 is provided on the side of the frame 20 away from the bottom plate 10, and abuts against the first sealing portion 301. Thus, the first sealing portion 301 can seal the connection position between the cover plate 40 and the frame 20, so that after the cover plate 40 and the frame 20 are connected, the overall sealing performance of the battery case 100 is good.

[0054] Wherein, along the first direction, the size of the first sealing portion 301 is less than or equal to 35 mm. The first direction is perpendicular to the extension direction of the first sealing portion 301 and perpendicular to the arrangement direction of the cover plate 40 and the first sealing portion 301. For example, Figure 1 As shown, the sealing member 30 is a rectangular structure. For the short side of the sealing member 30 , the first direction is the length direction of the sealing member 30 . Correspondingly, for the long side of the sealing member 30 , the first direction is the width direction of the sealing member 30 .

[0055] Generally, the width of the seal 30 along the first direction is about 60 mm. Since the dimension of the first sealing portion 301 along the first direction is less than or equal to 35 mm, the first sealing portion 301 is relatively small, thereby making the seal 30 relatively small, which can save material consumption during the manufacturing process and thus save costs.

[0056] It is understood that the specific size of the first sealing portion 301 can be selected according to actual conditions. For example, the size of the first sealing portion 301 along the first direction can be 26 mm-30 mm. For example, the size of the first sealing portion 301 can be 26 mm, 28 mm, or 30 mm.

[0057] It is understandable that the battery box 100 can be installed in different ways. For example, the frame 20 can be connected to other parts such as the vehicle body by bolts 50, and the cover 40 and the frame 20 can also be connected by bolts 50. As a result, the connection between the cover 40 and the frame 20 is relatively strong. At the same time, due to the connection of the bolts 50, the cover 40 and the frame 20 can better abut against the seal 30, so that the seal 30 can better seal. Figure 3 As shown, the cover plate 40 may be provided with bolt holes 402 so that the bolts 50 can pass through smoothly.

[0058] To ensure that the seal 30 can better abut against various locations of the cover plate 40 and the frame 20, a plurality of bolts 50 may be provided. The plurality of bolts 50 may be spaced apart along the circumference of the frame 20. Thus, the plurality of circumferentially distributed bolts 50 ensure that various locations of the cover plate 40 and the frame 20 can better abut against the seal 30, thereby ensuring the sealing effect of the seal 30.

[0059] It is understood that the type of seal 30 can be selected based on actual conditions. For example, the seal 30 can be a sealing foam. Furthermore, the seal 30 can be attached to the frame 20 by bonding. Of course, the seal 30 can also be attached to the frame 20 by other methods, and the specific method can be selected based on actual conditions.

[0060] At the same time, if Figure 4 and Figure 5 As shown, Figure 4 This is a partial cross-sectional view of a battery box 100 after assembly provided in an embodiment of the present application. Figure 5 for Figure 4In the enlarged partial view of point A, the cover plate 40 has a raised portion 401 on the side closest to the seal 30. The raised portion 401 abuts against the seal 30. Thus, the abutment between the raised portion 401 and the seal 30 allows the seal 30 to maintain a good compression at the raised portion 401, thereby improving the sealing effect at this location.

[0061] Since the raised portion 401 can compress the seal 30, the seal 30 can be better sealed. In this way, the raised portion 401 here can replace the bolt 50, thereby reducing the number of connecting bolts 50 between the cover plate 40 and the frame 20, thereby reducing the overall weight of the battery pack, and further reducing the overall weight of the vehicle. At the same time, since the raised portion 401 can better compress the seal 30, the seal 30 has a good compression amount. In this way, the sealing effect of the first sealing portion 301 can be guaranteed while the size of the first sealing portion 301 along the first direction is small.

[0062] Of course, when the dimension of the first sealing portion 301 along the first direction is relatively small, other methods can be used to ensure the compression of the first sealing portion 301. For example, as mentioned above, the cover plate 40 and the frame 20 can be connected by bolts 50. In this case, the compression degree of the first sealing portion 301 can be ensured by adjusting the tightening degree of the bolts 50, thereby ensuring the sealing effect of the first sealing portion 301.

[0063] In some embodiments, the battery pack can be a cell-to-vehicle (CTV) battery pack, a cell-to-pack (CTP) battery pack, a cell-to-chassis (CTC) battery pack, or a cell-to-body (CTB) battery pack. The battery case 100 provided in the embodiments of the present application can be selected according to the type of battery pack, and can achieve good sealing. The number of bolts 50 between the cover plate 40 and the frame can also be reduced by the raised portion 401, thereby reducing the weight of the battery pack and thus reducing the weight of the vehicle body.

[0064] In some embodiments, as Figure 6 As shown, Figure 6 The exploded view of another battery box 100 provided in the embodiment of the present application has multiple seals 30. The multiple seals 30 are sequentially abutted end to end along the circumference of the frame 20. Thus, by arranging multiple seals 30 sequentially connected end to end along the circumference of the frame 20, the seal between the cover 40 and the frame 20 can also be better achieved. For example, Figure 6 As shown, the frame 20 may be in the shape of a cuboid, and the number of the sealing members 30 may be four, each of which is disposed on one side of the frame 20 .

[0065] Meanwhile, when there are multiple sealing members 30, the sealing members 30 may be designed in a strip shape. In this way, during installation, automated equipment can be used to directly bond the sealing members 30 to the frame 20, eliminating the need for manual bonding. This improves bonding efficiency and saves labor costs.

[0066] Of course, in other embodiments, such as Figure 1 and Figure 7 As shown, Figure 7 This is an exploded view of another battery case 100 provided in an embodiment of the present application. The number of seals 30 may also be one. In this case, the seal 30 may be annular, so that the seal 30 can be disposed around the circumference of the frame 20. When the number of seals 30 is one, the annular seal 30 can be directly manufactured during production, simplifying the manufacturing process.

[0067] like Figure 8 As shown, since the first sealing portion 301 is located between the cover plate 40 and the frame 20, it can abut against the frame 20 and the cover plate 40, thereby achieving a seal between the frame 20 and the cover plate 40. Based on this solution, the battery pack can be a CTP battery pack. In this case, there is no need to consider the seal between the frame 20 and the vehicle body; only the aforementioned seal 30 is required to achieve an overall seal, resulting in a simple and convenient structure.

[0068] In some embodiments, as Figure 8 As shown, along the first direction (ie Figure 8 The outer wall of the first sealing portion 301 is flush with the outer wall of the frame 20. The outer wall of the cover plate 40 is flush with the outer wall of the first sealing portion 301.

[0069] As can be seen from the above, the cover plate 40 and the frame 20 can be connected by bolts 50. In some embodiments, based on Figure 8 In the embodiment shown, a notch may be formed on the inner wall of the first sealing portion 301. The notch may be used to allow the bolt 50 to pass through the sealing member 30 smoothly and connect to the frame 20 below.

[0070] In some embodiments, as Figure 9 As shown, Figure 9 This is a partial cross-sectional view of another assembled battery box 100 provided in an embodiment of the present application, along the first direction (ie Figure 9In the left-right direction, the outer wall of the first sealing portion 301 is staggered with the outer wall of the frame 20 and is located on the inner side of the outer wall of the frame 20. The outer wall of the cover plate 40 is flush with the outer wall of the first sealing portion 301. Because the first sealing portion 301 is staggered with the outer wall of the cover plate 40, the outer wall of the cover plate 40 is flush with the outer wall of the first sealing portion 301, so that the connection between the cover plate 40 and the frame 20 can be sealed by the sealing member 30.

[0071] In this way, when the size of the frame 20 is certain, since the outer wall of the cover 40 is located on the inner side of the outer wall of the frame 20, the size of the cover 40 can be designed to be relatively small, so that the cover 40 consumes less material and occupies less space, thereby facilitating subsequent installation and placement.

[0072] Similarly, based on Figure 9 In the embodiment shown, a notch may be formed on the outer wall of the first sealing portion 301. The notch may be used to allow the bolt 50 to pass through the sealing member 30 smoothly and connect to the frame 20 below.

[0073] based on Figure 8 and Figure 9 In the embodiment shown, the width of the conventional sealing foam is twice the width of the sealing member 30 provided in the embodiment of the present application. In practical applications, a clearance hole can be opened in the middle of the conventional sealing foam to avoid the bolt 50.

[0074] In some embodiments, as Figure 10 As shown, Figure 10 This is a partial cross-sectional view of another assembled battery case 100 provided in an embodiment of the present application. The seal 30 also includes a second sealing portion 302. The second sealing portion 302 is connected to the first sealing portion 301 and is located on the periphery of the cover plate 40, surrounding the outer periphery of the cover plate 40. The second sealing portion 302 is used to abut against the vehicle body. In this case, the battery pack can be a CTV battery pack, a CTC battery pack, or a CTB battery pack.

[0075] In this way, the first sealing portion 301 can achieve sealing between the cover plate 40 and the frame 20. At the same time, since the second sealing portion 302 is located on the peripheral side of the cover plate 40, it is arranged around the periphery of the cover plate 40. Figure 10 As shown, the second sealing portion 302 can abut against the vehicle body structure 60 to achieve sealing between the frame 20 and the vehicle body structure 60 .

[0076] Therefore, based on Figure 10In the illustrated embodiment, the seal 30 can simultaneously seal the cover plate 40 and frame 20, and the frame 20 and body structure 60. This eliminates the need for multiple seals 30 to separately seal the cover plate 40 and frame 20, and the frame 20 and body structure 60, simplifying the battery pack. In actual applications, based on the above embodiment, the volume of the seal 30 provided in the embodiment of the present application can be reduced by 40% compared to a solution that uses multiple seals 30 for separate sealing, thereby saving material.

[0077] based on Figure 10 In the embodiment shown, the number of the sealing member 30 can be one. In this case, when manufacturing the sealing member 30, a groove can be directly designed on the inner side of the sealing member 30 to form the first sealing portion 301 and the second sealing portion 302. The design is simple, convenient, and easy to implement.

[0078] In some embodiments, as Figure 12 As shown, along the arrangement direction of the cover plate 40 and the first sealing portion 301, the dimension H2 of the second sealing portion 302 can be less than or equal to 35 mm. For example, the dimension H2 of the second sealing portion 302 can be 10 mm to 20 mm. For example, the dimension H2 of the second sealing portion 302 can be 10 mm, 15 mm, or 20 mm. As a result, the dimension of the second sealing portion 302 is also relatively small, which can further reduce material loss of the seal 30.

[0079] For example, based on Figure 12 In the embodiment shown, the seal 30 is arranged along a first direction (ie Figure 12 The total dimension H3 of the seal 30 along the first direction (i.e., the left and right direction) can be 39.76 mm, the thickness H4 of the first sealing portion 301 can be 5 mm, the width H1 of the first sealing portion 301 can be 23.76 mm, and the height H2 of the second sealing portion 302 can be 13.15 mm. Alternatively, the seal 30 along the first direction (i.e., Figure 12 The total dimension H3 (in the left-right direction as shown) may be 28.5 mm, the thickness H4 of the first sealing portion 301 may be 5 mm, the width H1 of the first sealing portion 301 may be 12.5 mm, and the height H2 of the second sealing portion 302 may be 13.15 mm.

[0080] In some embodiments, as Figure 12 As shown, the first sealing portion 301 and the second sealing portion 302 can be integrally formed. In this way, they can be directly formed during production. Of course, in other embodiments, such as Figure 13 As shown, the first sealing portion 301 and the second sealing portion 302 can also be manufactured separately.

[0081] based on Figure 13In the embodiment shown, the first sealing portion 301 is along the first direction (ie Figure 13 The dimension H1 (in the left-right direction) of the first sealing portion 301 may be 25 mm, the thickness H4 of the first sealing portion 301 may be 5 mm, the height H2 of the second sealing portion 302 may be 10 mm, and the width H3 of the second sealing portion 302 may be 18 mm.

[0082] In some embodiments, as Figure 5 As shown, a recessed portion is formed on the side of the cover plate 40 away from the seal 30. The recessed portion forms a raised portion 401 on the side of the cover plate 40 closer to the seal 30. Thus, when manufacturing the cover plate 40, the raised portion 401 can be formed by simply stretching or stamping the cover plate 40, making the manufacturing process simple and convenient.

[0083] Of course, in other embodiments, the side of the cover plate 40 close to the seal 30 can be directly designed with the protrusion 401. In this case, when manufacturing the cover plate 40, it is only necessary to provide the protrusion 401 on the surface of the cover plate 40 close to the seal 30.

[0084] In some embodiments, as Figure 11 As shown, Figure 11 This is a partial enlarged view of a cover plate 40 provided in an embodiment of the present application, wherein the number of raised portions 401 is multiple. The multiple raised portions 401 are arranged at intervals along the circumference of the frame 20. Thus, by providing multiple raised portions 401, the multiple raised portions 401 can replace more bolts 50 to tighten the seal 30 ( Figure 10 ) to abut against each other, thereby further reducing the number of bolts 50 and further reducing the weight of the battery pack.

[0085] Continue to refer to Figure 11 In some embodiments, the shape of the protrusion 401 can be a long strip. In this way, the protrusion 401 can have more positions to contact with the sealing member 30 ( Figure 10 ) to abut against each other, so that more positions can be compressed, ensuring the sealing effect of the seal 30.

[0086] In other embodiments, the shape of the protrusion 401 may also be hemispherical. In this way, due to the hemispherical shape of the protrusion 401, the position where the protrusion 401 abuts against the sealing member 30 is an arc surface, which can reduce the probability of damage to the sealing member 30 caused by the protrusion 401 abutting against the sealing member 30, thereby ensuring the sealing effect of the sealing member 30.

[0087] In some embodiments, along the radial direction of the frame 20, the protrusion 401 can abut against the middle of the seal 30. In this way, because the protrusion 401 abuts against the middle of the seal 30, both sides of the seal 30 can generate a good amount of compression under the force of the protrusion 401, thereby achieving a good sealing effect.

[0088] The above are only specific embodiments of the present application, but the scope of protection of the present application is not limited thereto. Any changes or replacements within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A battery box, characterized in that: include: base plate; A frame is located on one side of the bottom plate and is arranged around the bottom plate; The sealing member includes a first sealing portion; the first sealing portion is provided on the frame and located on a side of the frame away from the bottom plate; The first sealing portion is arranged along the circumference of the frame; and a cover plate, arranged on a side of the frame away from the bottom plate and abutting against the first sealing portion; Wherein, along the first direction, the size of the first sealing portion is less than or equal to 35 mm; the first direction is perpendicular to the extension direction of the first sealing portion and perpendicular to the arrangement direction of the cover plate and the first sealing portion.

2. The battery box according to claim 1, characterized in that: The seal also includes: The second sealing portion is connected to the first sealing portion, is located on the peripheral side of the cover plate, and is arranged around the periphery of the cover plate; the second sealing portion is used to abut against the vehicle body.

3. The battery box according to claim 1, characterized in that: Along the first direction, the outer wall of the first sealing portion is staggered with the outer wall of the frame and is located inside the outer wall of the frame; the outer wall of the cover plate is flush with the outer wall of the first sealing portion.

4. The battery box according to claim 1, characterized in that: Along the first direction, the outer wall of the first sealing portion is flush with the outer wall of the frame; and the outer wall of the cover plate is flush with the outer wall of the first sealing portion.

5. The battery box according to claim 1, characterized in that: There are multiple sealing members, and the multiple sealing members are abutted against each other end to end in sequence along the circumference of the frame.

6. The battery box according to claim 2, characterized in that: Along the arrangement direction of the cover plate and the first sealing portion; the size of the second sealing portion is less than or equal to 35 mm.

7. The battery box according to claim 1, characterized in that: A convex portion is formed on one side of the cover plate close to the sealing member; the convex portion abuts against the sealing member.

8. The battery box according to claim 7, characterized in that: A concave portion is formed on a side of the cover plate away from the sealing member, and the concave portion forms the convex portion on a side of the cover plate close to the sealing member.

9. The battery case according to claim 8, characterized in that: The shape of the protrusion is a long strip or a hemispherical shape.

10. A battery pack, characterized in that: A battery case comprising the battery case according to any one of claims 1 to 9.

11. The battery pack according to claim 10, characterized in that: The battery pack is one of a CTV battery pack, a CTC battery pack, a CTP battery pack or a CTB battery pack.

12. A vehicle, characterized in that: Including the battery pack according to claim 10 or 11.

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