Battery box and vehicle

Abstract

The utility model relates to a kind of battery box and vehicle, involve battery box sealing technical field, to solve the problem of excessive number of connecting pieces.A kind of battery box, including cover, box, sealing gasket and connecting piece, the box is connected with the cover;The sealing gasket is clamped between the first sealing surface and the second sealing surface;The connecting piece connects the cover and the box;Wherein, at least one of the cover and the box is provided with extrusion rib for extruding the sealing gasket.

Description

Technical Field

[0001] This utility model relates to the field of battery box sealing technology, specifically to a battery box and a vehicle. Background Technology

[0002] Traditional battery packs consist of a cover and a housing. The airtightness of the battery pack is crucial for battery safety. Compression of the sealing gasket can cause the battery pack to fail to keep airtight. In related technologies, the cover and housing are compressed by the force applied by multiple connectors to make the sealing gasket deform sufficiently, thereby ensuring the airtightness of the battery pack. Utility Model Content

[0003] This utility model relates to a battery box and a vehicle, aiming to solve the problem of how to reduce the number of connecting parts between the cover and the box body.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] In a first aspect, embodiments of this application provide a battery box, which includes a cover, a box body, a sealing gasket, and a connector; the box body is connected to the cover; the sealing gasket is sandwiched between the cover and the box body; the connector connects the cover and the box body; wherein at least one of the cover and the box body is provided with a compression rib for compressing the sealing gasket.

[0006] Based on the battery box provided in this application embodiment, when the cover and the box are connected, the extrusion ribs protruding on the surface of the cover and / or the box will compress the sealing gasket. The sealing gasket will have a larger deformation at the location where it is compressed by the extrusion ribs, which increases the sealing performance between the cover and the box. In this way, it is not necessary to have a large number of connectors to apply a large force to the cover and the box to ensure the sealing performance between the box and the cover, thus reducing the number of connectors used to connect the cover and the box.

[0007] In some embodiments of this application, the ratio of the width of the extrusion rib to the width of the sealing gasket is m, where 0.2 ≤ m ≤ 0.6.

[0008] Based on the above embodiments, when the ratio of the width of the extrusion rib to the width of the sealing gasket is greater than 0.6, the pressure applied by the extrusion rib to the sealing gasket is too small, which is insufficient to cause the extrusion rib to produce sufficient deformation; when the ratio of the width of the extrusion rib to the width of the sealing gasket is less than 0.2, the portion of the sealing gasket that deforms after being extruded by the extrusion rib is too small, which is insufficient to form a sufficient sealing surface between the sealing gasket and the housing and / or between the sealing point and the cover.

[0009] In some embodiments of this application, the ratio of the thickness of the extrusion rib to the thickness of the sealing gasket is n, where 0.4 ≤ n ≤ 0.7.

[0010] Based on the above embodiments, when the ratio of the thickness of the compression rib to the thickness of the sealing gasket is greater than 0.7, the thickness of the compression rib is too large. After the compression rib fully compresses the sealing gasket, the first sealing surface and the sealing gasket may not be tightly compressed or there may be gaps. Furthermore, after the cover and the box are connected, the first and second sealing surfaces will also compress the sealing gasket, requiring a margin to be made for the compression of the sealing gasket by the first and second sealing surfaces. When the ratio of the thickness of the compression rib to the thickness of the sealing gasket is less than 0.4, the compression of the sealing gasket by the compression rib is insufficient.

[0011] In some embodiments of this application, the cover body has a plurality of extrusion ribs protruding towards the box body, and the plurality of extrusion ribs are arranged along the width direction of the sealing gasket; or, the box body has a plurality of extrusion ribs protruding towards the cover body, and the plurality of extrusion ribs are arranged along the width direction of the sealing gasket; or, both the box body and the cover body have a plurality of extrusion ribs protruding, and the extrusion ribs on the cover body and the extrusion ribs on the box body are staggered along the width direction of the sealing gasket.

[0012] Based on the above embodiments, multiple compression ribs will further enhance the compression of the sealing gasket, increase the sealing surface area between the sealing gasket and the cover and / or the sealing gasket and the box, thereby enhancing the sealing performance of the battery box.

[0013] In some embodiments of this application, the spacing between adjacent extrusion ribs along the width direction of the extrusion rib is greater than the width of the extrusion rib.

[0014] Based on the above embodiments, after the extrusion ribs extrude the sealing gasket, a portion of the sealing gasket will deform toward the space between adjacent extrusion ribs. The spacing between adjacent extrusion ribs is greater than the width of the extrusion ribs, which can provide sufficient space for the deformation of the extrusion ribs.

[0015] In some embodiments of this application, the cover is configured as a sheet metal part, and the extruded ribs are configured as stamped reinforcing ribs; and / or, the box body is configured as a sheet metal part, and the extruded ribs on the box body are configured as stamped reinforcing ribs.

[0016] Based on the above embodiments, the stamping reinforcing ribs are simple to manufacture and have a reliable structure. When the cover is configured as a sheet metal part, the stamping reinforcing ribs can be directly formed by stamping in the sheet metal process when the cover is manufactured. The stamping reinforcing ribs can not only compress the sealing gasket but also enhance the structural strength of the cover.

[0017] In some embodiments of this application, the sealing gasket includes a plurality of sealing strips joined together in sequence.

[0018] Based on the above embodiments, the sealing gasket is divided into multiple parts, which facilitates the bonding of the sealing gasket and the housing by automated equipment. At the same time, it solves the problem of die-cutting the middle area of ​​the transmission sealing gasket, reducing material waste.

[0019] In some embodiments of this application, the plurality of sealing strips include a first sealing strip and a second sealing strip, the first sealing strip having a snap-fit ​​groove, and the second sealing strip including a main body and a snap-fit ​​portion; the snap-fit ​​portion is connected to the main body and is located within the snap-fit ​​groove.

[0020] Based on the above embodiments, the first sealing strip and the second sealing strip are spliced ​​together by the snap-fit ​​part and the snap-fit ​​groove to form a complete sealing gasket.

[0021] In some embodiments of this application, the housing has a positioning groove, the sealing gasket is at least partially located within the positioning groove, and the outer surface of the sealing gasket is in contact with the groove wall of the positioning groove.

[0022] Based on the above embodiments, the housing is provided with a positioning groove. When the sealing gasket is pasted onto the housing, the groove wall of the positioning groove can position the sealing gasket, making it easier for the sealing gasket to be pasted onto the housing.

[0023] Secondly, embodiments of this application also provide a vehicle, the vehicle including a frame and a battery box as described above; the battery box is fixed to the frame.

[0024] The vehicle based on the embodiments of this application, having the aforementioned battery box, can also solve the same technical problem.

[0025] The beneficial effects of this utility model are:

[0026] 1. When the cover and the box are connected, the protruding compression ribs will compress the sealing gasket. The sealing gasket will have a greater deformation at the point where it is compressed by the compression ribs, which increases the sealing performance between the cover and the box. In this way, it is not necessary to have a large number of connectors to apply a large force to the cover and the box to ensure the sealing performance between the box and the cover, thus reducing the number of connectors used to connect the cover and the box.

[0027] 2. Dividing the sealing gasket into multiple parts facilitates the application of the gasket to the housing by automated equipment. Simultaneously, it eliminates the need for die-cutting the central area of ​​the transmission sealing gasket, reducing material waste. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the exploded structure of the battery box in some embodiments of this application.

[0029] Figure 2 This is a cross-sectional view of the cover, sealing gasket, and box body after they are connected in some embodiments of this application.

[0030] Figure 3 for Figure 2 Enlarged schematic diagram of the structure of section A in the middle.

[0031] Figure 4 This is a schematic diagram of the structure after the first sealing strip and the second sealing strip are spliced ​​together in some embodiments of this application.

[0032] Figure label:

[0033] 10. Cover; 11. Extrusion rib; 20. Box body; 21. Positioning groove; 30. Sealing gasket; 31. First sealing strip; 311. Snap-fit ​​groove; 32. Second sealing strip; 321. Main body; 322. Snap-fit ​​part. Detailed Implementation

[0034] To enable those skilled in the art to better understand the technical solutions of this application, the technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0035] It should be noted that the terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0036] Traditional battery packs consist of a cover and a housing. The airtightness of the battery pack is crucial for battery safety. Compression of the sealing gasket can cause the battery pack to fail to keep airtight. In related technologies, the cover and housing are connected by a force applied to the sealing gasket to compress it, thereby ensuring sufficient deformation and thus guaranteeing the airtightness of the battery pack.

[0037] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0038] Firstly, please refer to Figures 1 to 3 As shown in the figure, this application provides a battery box, which includes a cover 10, a box body 20, a sealing gasket 30 and a connector; the box body 20 is connected to the cover 10; the sealing gasket 30 is sandwiched between the cover and the box body; the connector connects the cover 10 and the box body 20; wherein, at least one of the cover 10 and the box body 20 is provided with a compression rib 11 for compressing the sealing gasket 30.

[0039] The connector is used to connect the housing 20 and the cover 10. In this embodiment, the connector can be configured as a bolt.

[0040] The compression rib 11 is used to compress the sealing gasket 30, forcing the sealing gasket 30 to produce a larger deformation. It can be understood that when the compression rib 11 is set on the cover 10, the compression rib 11 is located on the side of the cover 10 facing the box 20 and needs to be set in a position corresponding to the sealing gasket 30; when the compression rib 11 is set on the box 20, the compression rib 11 is located on the side of the box 20 facing the cover 10 and needs to be set in a position corresponding to the sealing gasket 30.

[0041] Based on the battery box provided in this application embodiment, when the cover 10 and the box 20 are connected, the protruding compression rib 11 will compress the sealing gasket 30. The sealing gasket 30 will have a larger deformation at the position where it is compressed by the compression rib 11, which increases the sealing performance between the cover 10 and the box 20. In this way, it is not necessary to have a large number of connectors to apply a large force to the cover 10 and the box 20 to ensure the sealing performance between the box 20 and the cover 10, thus reducing the number of connectors used to connect the cover 10 and the box 20.

[0042] In some embodiments of this application, the ratio of the width of the compression rib 11 to the width of the sealing gasket 30 is m, where 0.2 ≤ m ≤ 0.6.

[0043] Within this range, the compression rib 11 can cause sufficient deformation of the sealing gasket 30 after compressing it, and can form a sealing surface with high sealing performance and sufficient area between the sealing gasket 30 and the housing 20 and / or between the sealing point and the cover 10; when the ratio of the width of the compression rib 11 to the width of the sealing gasket 30 is greater than 0.6, the pressure applied by the compression rib 11 to the sealing gasket 30 is too small, which is insufficient to cause sufficient deformation of the compression rib 11, resulting in poor sealing performance of the sealing surface formed between the sealing gasket 30 and the housing 20 and / or between the sealing point and the cover 10; when the ratio of the width of the compression rib 11 to the width of the sealing gasket 30 is less than 0.2, the portion of the sealing gasket 30 that deforms after being compressed by the compression rib 11 is too small, which is insufficient to form a sealing surface with a sufficiently large area between the sealing gasket 30 and the housing 20 and / or between the sealing point and the cover 10.

[0044] In some embodiments of this application, the ratio of the thickness of the extrusion rib 11 to the thickness of the sealing gasket 30 is n, where 0.4 ≤ n ≤ 0.7.

[0045] When the ratio of the thickness of the compression rib 11 to the thickness of the sealing gasket 30 is greater than 0.7, the thickness of the compression rib 11 is too large. After the compression rib 11 fully compresses the sealing gasket 30, there may be a situation where the sealing surface of the housing 20 that mates with the sealing gasket 30 is not tightly compressed or there are gaps. Furthermore, after the cover 10 and the housing 20 are connected, the first sealing surface and the second sealing surface will also compress the sealing gasket 30, and the compression of the sealing gasket 30 by the first sealing surface and the second sealing surface needs to be adjusted to allow for excess material. When the ratio of the thickness of the compression rib 11 to the thickness of the sealing gasket 30 is less than 0.4, the compression of the sealing gasket 30 by the compression rib 11 is insufficient.

[0046] In some embodiments of this application, the first sealing surface is provided with a plurality of compression ribs 11, which are arranged radially along the cover 10. The plurality of compression ribs 11 further enhance the compression of the sealing gasket 30, thereby improving the sealing performance of the battery box.

[0047] In other embodiments of this application, the second sealing surface is provided with a plurality of compression ribs 11, which are arranged radially along the housing 20. Similarly, the plurality of compression ribs 11 further enhance the compression of the sealing gasket 30, thereby improving the sealing performance of the battery housing.

[0048] In some embodiments of this application, both the first sealing surface and the second sealing surface are provided with a plurality of extrusion ribs 11, which are staggered. The plurality of extrusion ribs 11 further enhance the extrusion of the sealing gasket 30, thereby improving the sealing performance of the battery box.

[0049] In some embodiments of this application, the spacing between adjacent extrusion ribs 11 along the width direction of the sealing gasket 30 is greater than the width of the extrusion rib 11. After the extrusion rib 11 extrudes the sealing gasket 30, a portion of the sealing gasket 30 will fill the space between adjacent extrusion ribs 11. Considering the ratio of the width of the extrusion rib 11 to the width of the sealing gasket 30 is m, where 0.2 ≤ m ≤ 0.6, when there are multiple extrusion ribs 11 and the ratio of the width of the extrusion rib 11 to the width of the sealing gasket 30 is 0.2, the ratio of the spacing between two extrusion ribs 11 to the width of the sealing gasket 30 can be greater than 0.4 and less than 0.6.

[0050] In some embodiments of this application, the cover 10 is configured as a sheet metal part, and the extrusion ribs 11 on the cover 10 are configured as stamping reinforcing ribs.

[0051] Stamped reinforcing ribs are simple to manufacture and have a reliable structure. When the cover 10 is configured as a sheet metal part, the stamped reinforcing ribs can be directly formed during the sheet metal manufacturing process. These stamped reinforcing ribs not only compress the sealing gasket 30 but also enhance the structural strength of the cover 10. Sheet metal processing is a comprehensive cold working process for thin metal sheets (usually below 6mm), including shearing, punching / cutting / compound cutting, bending, welding, riveting, and splicing. Products processed using sheet metal processing are called sheet metal parts.

[0052] It is understood that in some embodiments of this application, the housing 20 may also be configured as a sheet metal part, and the extrusion ribs 11 on the housing 20 may be configured as stamping reinforcing ribs.

[0053] In some embodiments of this application, the sealing gasket 30 comprises multiple sealing strips sequentially spliced ​​together. Dividing the sealing gasket 30 into multiple parts facilitates the application of the sealing gasket 30 and the housing 20 by automated equipment. Simultaneously, it solves the problem of die-cutting the middle area of ​​the transmission sealing gasket 30, reducing material waste.

[0054] Please refer to Figure 1 and Figure 4 As shown, in some embodiments of this application, the plurality of sealing strips includes a first sealing strip 31 and a second sealing strip 32. The first sealing strip 31 has a snap-fit ​​groove 311, and the second sealing strip 32 includes a main body portion 321 and a snap-fit ​​portion 322. The snap-fit ​​portion 322 is connected to the main body portion 321 and is located within the snap-fit ​​groove 311. The first sealing strip 31 and the second sealing strip 32 are joined together by the snap-fit ​​portion 322 and the snap-fit ​​groove 311 to form a complete sealing gasket 30.

[0055] The snap-fit ​​groove 311 is used to cooperate with the snap-fit ​​part 322 to realize the splicing of the first sealing strip 31 and the second sealing strip 32. In this embodiment, the shape and size of the snap-fit ​​groove 311 are not limited, as long as the snap-fit ​​groove 311 can cooperate with the snap-fit ​​part 322 to realize the splicing of the first sealing strip 31 and the second sealing strip 32.

[0056] In some embodiments of this application, the housing 20 has a positioning groove 21, and the sealing gasket 30 is at least partially located within the positioning groove 21, with the outer surface of the sealing gasket 30 conforming to the groove wall of the positioning groove 21. The positioning groove 21 provided in the housing 20 allows the groove wall of the positioning groove 21 to position the sealing gasket 30 when it is attached to the housing 20, facilitating its attachment.

[0057] In some embodiments of this application, the depth of the positioning groove 21 is equal to the thickness of the sealing gasket 30.

[0058] Secondly, embodiments of this application also provide a vehicle, which includes a frame and a battery box as described above; the battery box is fixed to the frame.

[0059] The vehicle based on the embodiments of this application, having the aforementioned battery box, can also solve the same technical problem.

[0060] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A battery box, characterized in that, include: Cover (10); Box (20), the box (20) is connected to the cover (10); A sealing gasket (30) is sandwiched between the cover (10) and the housing (20); and, A connector that connects the cover (10) and the box (20); At least one of the cover (10) and the box (20) is provided with a compression rib (11) for compressing the sealing gasket (30).

2. The battery box according to claim 1, characterized in that, The ratio of the width of the extrusion rib (11) to the width of the sealing gasket (30) is m, where 0.2 ≤ m ≤ 0.

6.

3. The battery box according to claim 1, characterized in that, The ratio of the thickness of the extrusion rib (11) to the thickness of the sealing gasket (30) is n, where 0.4 ≤ n ≤ 0.

7.

4. The battery box according to claim 1, characterized in that, The cover (10) has a plurality of extrusion ribs (11) protruding towards the box (20), and the plurality of extrusion ribs (11) are arranged along the width direction of the sealing gasket (30); or, The housing (20) has a plurality of extrusion ribs (11) protruding towards the cover (10), and the plurality of extrusion ribs (11) are arranged along the width direction of the sealing gasket (30); or, Both the box body (20) and the cover body (10) are provided with a plurality of extrusion ribs (11), and the extrusion ribs (11) on the cover body (10) and the extrusion ribs (11) on the box body (20) are staggered along the width direction of the sealing gasket (30).

5. The battery box according to claim 4, characterized in that, The spacing between adjacent extrusion ribs (11) along the width direction of the sealing gasket (30) is greater than the width of the extrusion rib (11).

6. The battery box according to claim 1, characterized in that, The cover (10) is configured as a sheet metal part, and the extrusion ribs (11) on the cover (10) are configured as stamping reinforcing ribs; and / or, The box body (20) is configured as a sheet metal part, and the extrusion rib (11) on the box body (20) is configured as a stamping reinforcing rib.

7. The battery box according to any one of claims 1-6, characterized in that, The sealing gasket (30) comprises a plurality of sealing strips joined together in sequence.

8. The battery box according to claim 7, characterized in that, The plurality of sealing strips includes a first sealing strip (31) and a second sealing strip (32), the first sealing strip (31) having a snap-fit ​​groove (311), and the second sealing strip (32) including: Main body (321); and, The snap-fit ​​part (322) is connected to the main body part (321) and is located in the snap-fit ​​groove (311).

9. The battery box according to claim 1, characterized in that, The housing (20) has a positioning groove (21), and the sealing gasket (30) is at least partially located in the positioning groove (21), with the outer surface of the sealing gasket (30) conforming to the groove wall of the positioning groove (21).

10. A vehicle, characterized in that, include: The battery box according to any one of claims 1-9; as well as, The vehicle frame, to which the battery box is fixed.

Images