Lifting point structure, battery pack and vehicle

Abstract

The embodiment of the utility model provides a lifting point structure, a battery pack and a vehicle. The lifting point structure comprises a body and a protective cover, wherein the body is provided with a first end; the protective cover is detachably connected with the first end of the body; when the protective cover is in the first use state, the protective cover is arranged at the first end of the body and covers the end face of the first end of the body, and when the protective cover is in the second use state, the protective cover is separated from the first end of the body. The lifting point structure is used for achieving the effects of improving the sealing performance with the vehicle and preventing the first sealing piece at the first end of the body from falling off.

Description

Technical Field

[0001] This application relates to the field of new energy technology, and in particular to a suspension point structure, a battery pack, and a vehicle. Background Technology

[0002] With the development of science and technology and the continuous increase in energy demand, battery packs are being used more and more widely. As the capacity of battery packs gradually increases, their weight also increases. Battery packs are typically connected to the vehicle chassis via a suspension point structure. To enhance the battery pack's modal characteristics and improve its resistance to pole impacts, the suspension point structure is generally located in the middle of the battery pack and assembled with the overall system.

[0003] However, the lifting point structure is sealed to the vehicle by a sealing ring, but the sealing ring is prone to falling off during transportation. Utility Model Content

[0004] This application provides a suspension point structure, a battery pack, and a vehicle to reduce the detachment of the first seal.

[0005] In a first aspect, embodiments of this application provide a suspension point structure, including:

[0006] The body has a first end;

[0007] A protective cover, wherein the protective cover is detachably connected to the first end of the main body;

[0008] When the protective cover is in the first use state, the protective cover is disposed at the first end of the main body and covers the end face of the first end of the main body. When the protective cover is in the second use state, the protective cover is separated from the first end of the main body.

[0009] In some possible implementations, when the protective cover is in a first use state, the protective cover is interference-fitted with a first end of the body.

[0010] In some possible implementations, the protective cover is formed by dip molding or injection molding.

[0011] And / or, the protective cover is made of polyvinyl chloride.

[0012] In some possible implementations, an annular groove is formed on the end face of the first end of the body;

[0013] The lifting point structure also includes a first sealing element, which is disposed in the annular groove and located between the protective cover and the body.

[0014] In some possible implementations, the area of ​​the protective cover opposite the annular groove protrudes in a direction away from the first end of the body.

[0015] In some possible implementations, the body includes: a connector;

[0016] The connector is provided with a first through hole, and the first end of the connector forms the first end of the body.

[0017] The protective cover also seals the first through hole.

[0018] In some possible implementations, the connector includes: a first segment, a second segment, and a third segment connected sequentially along the extension direction of the first through hole;

[0019] The outer peripheral surface of the second segment protrudes beyond the outer peripheral surface of the first segment and also protrudes beyond the outer peripheral surface of the third segment;

[0020] The protective cover covers a portion of the surface of the first through hole, the surface of the first segment facing away from the second segment, the outer peripheral surface of the first segment, the surface of the second segment facing away from the third segment, and at least a portion of the outer peripheral surface of the second segment.

[0021] In some possible implementations, the first segment is hexagonal;

[0022] And / or, the second segment is circular or elliptical;

[0023] And / or, the body further includes:

[0024] The first sleeve is connected to the second end of the connector;

[0025] The second sleeve is connected to the end of the first sleeve away from the connector, and the end of the second sleeve away from the first sleeve is also provided with a limiting part.

[0026] Secondly, embodiments of this application provide a battery pack, including a housing and a suspension point structure disposed on the housing as described above.

[0027] Thirdly, embodiments of this application provide a vehicle including the battery pack described above.

[0028] In the lifting point structure, battery pack, and vehicle provided in this application embodiment, the main body has a first end; a protective cover is detachably connected to the first end of the main body; when the protective cover is in a first use state, the protective cover is disposed at the first end of the main body and covers the end face of the first end of the main body; when the protective cover is in a second use state, the protective cover is separated from the first end of the main body. When the protective cover is in the first use state, it can prevent oil, water vapor, dust, etc. from falling onto the surface of the first end of the main body, thereby ensuring the sealing effect between the end face of the first end of the main body and the vehicle. Attached Figure Description

[0029] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0030] Figure 1 An exploded view of the lifting point structure provided in this application;

[0031] Figure 2 This is an overall schematic diagram of the lifting point structure provided in this application;

[0032] Figure 3 This is a partial enlarged view of the lifting point structure provided in this application;

[0033] Figure 4 A schematic diagram showing one orientation of the protective cover provided in this application;

[0034] Figure 5 This is a schematic diagram of another view of the protective cover provided in this application.

[0035] Explanation of reference numerals in the attached figures:

[0036] 10-Ontology;

[0037] 20 - First sleeve;

[0038] 21 - Second through hole;

[0039] 30 - Second sleeve;

[0040] 31 - Third through hole;

[0041] 32-Limiting part;

[0042] 40 - Connector;

[0043] 41-First segment;

[0044] 42-Second Segment;

[0045] 43 - Third segment;

[0046] 44 - First through hole;

[0047] 45 - Annular groove;

[0048] 50 - Protective cover;

[0049] 60 - First seal.

[0050] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0051] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. 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.

[0052] In related technologies, the sealing performance between the lifting point structure and the vehicle is relatively poor. Research has found that this is because the end of the lifting point structure used for assembly with the vehicle is prone to accumulating oil, moisture, and dust, affecting the sealing effect. Furthermore, this end of the lifting point structure typically has a sealing groove and a sealing ring for assembly with the vehicle; however, the sealing ring is prone to detachment or wear, which also affects the sealing performance.

[0053] Therefore, this application provides a lifting point structure, which includes a body and a protective cover. The protective cover is detachably connected to the first end of the body. When the protective cover is in the first use state, the protective cover is set at the first end of the body and covers the end face of the first end of the body. This can prevent oil, water vapor, dust and other substances from falling onto the end face of the first end of the body, thereby ensuring the sealing effect between the end face of the first end of the body and the vehicle, and also preventing the first seal at the upper end of the end face of the first end of the body from falling off.

[0054] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will be described below with reference to the accompanying drawings.

[0055] This application provides a vehicle, which can be an electric vehicle, an electric train, an electric bicycle, a golf cart, etc. The electric vehicle includes pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles. The vehicle includes a battery pack for storing and providing electrical energy. The battery pack is, for example, a lithium-ion battery pack, which has high specific energy per cell and low internal resistance, resulting in good driving range. This application does not limit the specific type of battery pack; it can be selected as needed.

[0056] The battery pack may include a housing for housing the battery cells, such as blade cells. In some possible examples, the housing includes a lower housing and an upper housing covering the lower housing, with multiple battery cells housed within the lower housing. The housing may also include one or more crossbeams disposed within and fixedly connected to the lower housing; for example, the crossbeams and the lower housing may be an integral structure or welded together to improve the structural strength of the housing.

[0057] The battery pack also includes a suspension point structure, which can be one or more, and the number is not limited. The suspension point structure runs through the housing and is connected to the bottom of the vehicle, for example, via a long bolt. Specifically, the long bolt passes through the suspension point structure from bottom to top, with the bolt head abutting against the suspension point structure, and the threaded part of the long bolt screwed into a threaded hole on the chassis to achieve suspension.

[0058] See Figures 1 to 5 The suspension structure includes a body 10 and a protective cover 50. The body 10 is fixedly connected to the battery pack. The body 10 has a first end, which is the connection end between the body 10 and the vehicle, and the first end of the body 10 is sealed to the vehicle. The end face of the first end of the body 10 is a mounting surface, which is assembled with the vehicle and abuts against the corresponding surface of the vehicle. This mounting surface needs to be kept clean to ensure a good seal between the body 10 and the vehicle.

[0059] In some possible examples, the body 10 includes a connector 40 having a first through hole 44, and a first end of the connector 40 forming a first end of the body 10. The connector 40 is, for example, a nut, and its first end engages with a vehicle, such as... Figure 2 and Figure 3 As shown, the first end of the connector 40 is the upper end of the connector 40. The first through hole 44 can be a straight through hole, which extends axially through the connector 40 to allow long bolts to pass through. Taking a plane perpendicular to the axis of the first through hole 44 as a cross-section, the cross-sectional shape of the first through hole 44 can be circular, elliptical, etc.

[0060] The connector 40 includes a first segment 41, a second segment 42, and a third segment 43 connected in sequence, arranged along the extension direction of the first through hole 44. One end of the first segment 41 is connected to one end of the second segment 42, and the other end of the second segment 42 is connected to the first end of the third segment 43. The end of the first segment 41 away from the second segment 42 is the first end of the connector 40, and the end of the third segment 43 away from the second segment 42 is the second end of the connector 40.

[0061] The first segment 41, the second segment 42, and the third segment 43 can be a single integrated structure, with the first through hole 44 penetrating through all three segments. The outer peripheral surface of the second segment 42 protrudes beyond the outer peripheral surface of the first segment 41 and also protrudes beyond the outer peripheral surface of the third segment 43. Thus, the second segment 42 can abut against the top surface of the battery pack, and the third segment 43 is used to connect the connector 40 to other structures (such as the first sleeve 20). Along the extending direction of the first through hole 44, the length of the third segment 43 is greater than the length of the second segment 42 and also greater than the length of the first segment 41; that is, the third segment 43 is longer to improve the reliability of the connection between the connector 40 and other structures.

[0062] For example, the first segment 41 is hexagonal; and / or, the second segment 42 is circular or elliptical. The hexagonal shape of the first segment 41 facilitates operation of the connector 40. The circular or elliptical shape of the second segment 42 increases the contact area between the second segment 42 and the battery pack. The third segment 43 may be circular or elliptical to facilitate assembly.

[0063] Continue reading Figures 1 to 3 The main body 10 also includes: a first sleeve 20 and a second sleeve 30. The first sleeve 20 is connected to the second end of the connector 40. The second sleeve 30 is connected to the end of the first sleeve 20 away from the connector 40. The end of the second sleeve 30 away from the first sleeve 20 is also provided with a limiting part 32. The limiting part 32 can abut against the bottom surface of the battery pack and cooperate with the connector 40 to limit the battery pack within the main body 10.

[0064] The first sleeve 20 connects the first sleeve 20 and the connector 40. The first sleeve 20 is provided with a second through hole 21, which communicates with the first through hole 44 to allow a long bolt to pass through. The second through hole 21 is, for example, a stepped hole, to limit the connection of the connector 40 and / or the second sleeve 30.

[0065] For example, the second through hole 21 includes a first hole segment, a second hole segment, and a third hole segment connected in sequence. The inner wall of the first hole segment protrudes outward from the inner wall of the second hole segment, so that the diameter of the first hole segment is larger than the diameter of the second hole segment. The inner wall of the third hole segment protrudes outward from the inner wall of the second hole segment, so that the diameter of the third hole segment is larger than the diameter of the second hole segment.

[0066] The inner wall of the second through hole 21 is provided with a first internal thread and a second internal thread spaced apart, the first internal thread and the second internal thread being located at opposite ends of the second through hole 21. For example... Figure 2 and Figure 3 As shown, the first internal thread is provided at the upper end of the second through hole 21, for example, in the first hole section; the second internal thread is provided at the lower end of the second through hole 21, for example, in the third hole section.

[0067] For example, the second end of the connector 40 is provided with a first external thread, which connects to one of a first internal thread and a second internal thread, thereby fixing the connector 40 and the first sleeve 20 together. One end of the second sleeve 30 is provided with a second external thread, which connects to the other of a first internal thread and a second internal thread, thereby fixing the second sleeve 30 and the first sleeve 20 together. For example, the first external thread is adapted to the first internal thread, and the second external thread is adapted to the second internal thread.

[0068] The second sleeve 30 is provided with a third through hole 31, which communicates with the second through hole 21 to allow a long bolt to pass through. The third through hole 31 can be a straight through hole or a stepped hole, so that the bolt head of the long bolt can be embedded in the second sleeve 30, preventing the bolt head from being exposed. One end of the second sleeve 30 is located inside the first sleeve 20 and connected to the first sleeve 20, and the other end of the second sleeve is provided with a limiting part 32.

[0069] In some possible examples, a second seal 70 is further provided between the first sleeve 20 and the second sleeve 30 to further ensure axial sealing between the first sleeve 20 and the second sleeve 30. The second seal 70 includes at least one sealing ring, which is fitted onto the second sleeve 30 and abuts against the inner wall of the second through hole 21 of the first sleeve 20. For example, the second seal 70 is disposed on the second external thread of the second sleeve 30 and abuts against the inner wall of the third hole section in the first sleeve 20.

[0070] Continue reading Figures 1 to 5The protective cover 50 is detachably connected to the first end of the body 10. When the protective cover 50 is in the first use state, it is positioned at the first end of the body 10 and covers the end face of the first end of the body 10. When the protective cover 50 is in the second use state, it is separated from the first end of the body 10. The first use state refers to the non-installation state of the lifting point structure, in which the lifting point structure is separated from the vehicle. The second use state refers to the installation state of the lifting point, in which the lifting point structure is assembled with the vehicle.

[0071] With this configuration, when the lifting point structure is assembled with the vehicle, the protective cover 50 is separated from the main body 10, allowing the first end of the main body 10 to be exposed. When the lifting point structure is not assembled with the vehicle, such as during storage or transportation, the protective cover 50 is placed at the first end of the main body 10, protecting the end face of the first end of the main body 10. This prevents oil, moisture, dust, etc., from falling onto the surface of the first end of the main body 10, thus ensuring a good seal between the end face of the first end of the main body 10 and the vehicle. Furthermore, through a standardized design of the main body 10, the protective cover 50 is universal, meaning it can meet the protection requirements of all designs of the mounting surface (i.e., the end face of the first end of the main body 10), thereby reducing costs.

[0072] In some possible implementations, in the first use state, the protective cover 50 is interference-fitted with the first end of the body 10. This allows the protective cover 50 to snap onto the first end of the body 10, securing it and facilitating separation, thus simplifying assembly. The protective cover 50 is formed using a dip-molding or injection molding process; and / or, the protective cover 50 is made of polyvinyl chloride (PVC) to ensure compatibility with the first end of the body 10. For example, using PVC dip-molding reduces costs and provides some elasticity, facilitating connection between the protective cover 50 and the body 10.

[0073] When the body 10 includes the connector 40, such as Figure 2 As shown, the protective cover 50 also seals the first through hole to achieve a reliable connection between the protective cover 50 and the body 10, and to prevent dust and other contaminants from falling into the first through hole 44. In the example where the connector 40 includes a first segment 41, a second segment 42, and a third segment 43, the protective cover 50 covers a portion of the surface of the first through hole 44, the surface of the first segment 41 facing away from the second segment 42, the outer peripheral surface of the first segment 41, the surface of the second segment 42 facing away from the third segment 43, and at least a portion of the outer peripheral surface of the second segment 42.

[0074] The protective cover 50 is adapted to the outer peripheral surface of the first segment 41 and part of the surface of the first through hole 44, such as... Figure 3As shown at points A and C, the protective cover 50 is positioned by the shape of the first segment 41 and the shape of the first through hole 44, ensuring that the protective cover 50 does not move in the planar direction. Figure 3 As shown at points A, C, and D, the protective cover 50 is interference-fitted with the outer peripheral surface of the first segment 41, a portion of the surface of the first through hole 44, and at least a portion of the outer peripheral surface of the second segment 42, such that the protective cover 50 is in the vertical direction ( Figure 3 (as shown in the Z direction) is fixed.

[0075] Continue reading Figures 1 to 3 An annular groove 45 is formed on the end face of the first end of the body 10. For example, an annular groove 45 is formed on the surface of the first segment 41 facing away from the second segment 42, and the annular groove 45 surrounds the first through hole 44. The lifting point structure also includes a first sealing element 60, which is disposed in the annular groove 45. The first sealing element 60 is, for example, a sealing ring. By providing a protective cover 50, and ensuring that the protective cover 50 is connected to the body 10 in the first use state, the first sealing element 60 can be prevented from falling off, thus ensuring a sealing effect.

[0076] In some possible examples, the area of ​​the protective cover 50 opposite to the annular groove 45 protrudes in a direction away from the first end of the body 10, such as... Figure 3 As shown, the area of ​​the protective cover 50 opposite to the annular groove 45 bulges upwards. Thus, as... Figure 3 As shown at point B, the protective cover 50 has a certain amount of clearance, which can restrict the vertical movement of the first sealing element 60, while also giving the first sealing element 60 a certain amount of free extension space to prevent wear on the first sealing element 60. Figure 3 As shown, the first seal 60 may protrude from the annular groove 45 and be spaced apart from the protective cover 50.

[0077] The lifting point structure provided in this embodiment includes a body 10 and a protective cover 50. The body 10 has a first end; the protective cover 50 is detachably connected to the first end of the body 10. When the protective cover 50 is in a first use state, the protective cover 50 is disposed at the first end of the body 10 and covers the end face of the first end of the body 10. When the protective cover 50 is in a second use state, the protective cover 50 is separated from the first end of the body 10. When the protective cover 50 is in the first use state, it can prevent oil, water vapor, dust, etc. from falling onto the surface of the first end of the body 10, thereby ensuring the sealing effect between the end face of the first end of the body 10 and the vehicle, and also preventing the first sealing member 60 of the sealing ring provided on the end face of the first end of the body 10 from falling off.

[0078] The embodiments or implementation methods described in this specification are presented in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. In this specification, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with an embodiment or example that are 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 can be combined in any suitable manner in one or more embodiments or examples.

[0079] Finally, it should be noted that other embodiments of this utility model will readily occur to those skilled in the art upon consideration of the specification and practice of the utility model disclosed herein. This utility model is intended to cover any variations, uses, or adaptations of this utility model that follow the general principles of this utility model and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of this utility model is limited only by the appended claims.

Claims

1. A suspension point structure, characterized in that, include: The body has a first end; A protective cover, wherein the protective cover is detachably connected to the first end of the main body; When the protective cover is in the first use state, the protective cover is disposed at the first end of the main body and covers the end face of the first end of the main body. When the protective cover is in the second use state, the protective cover is separated from the first end of the main body.

2. The suspension point structure according to claim 1, characterized in that, When the protective cover is in the first use state, the protective cover is interference-fitted with the first end of the body.

3. The suspension point structure according to claim 1, characterized in that, The protective cover is formed by dip molding or injection molding. And / or, the protective cover is made of polyvinyl chloride.

4. The suspension point structure according to any one of claims 1-3, characterized in that, An annular groove is formed on the end face of the first end of the body; The lifting point structure also includes a first sealing element, which is disposed in the annular groove and located between the protective cover and the body.

5. The lifting point structure according to claim 4, characterized in that, The area of ​​the protective cover opposite the annular groove protrudes in a direction away from the first end of the body.

6. The suspension point structure according to any one of claims 1-3, characterized in that, The body includes: a connector; The connector is provided with a first through hole, and the first end of the connector forms the first end of the body. The protective cover also seals the first through hole.

7. The lifting point structure according to claim 6, characterized in that, The connector includes a first segment, a second segment, and a third segment connected sequentially along the extension direction of the first through hole; The outer peripheral surface of the second segment protrudes beyond the outer peripheral surface of the first segment and also protrudes beyond the outer peripheral surface of the third segment; The protective cover covers a portion of the surface of the first through hole, the surface of the first segment facing away from the second segment, the outer peripheral surface of the first segment, the surface of the second segment facing away from the third segment, and at least a portion of the outer peripheral surface of the second segment.

8. The lifting point structure according to claim 7, characterized in that, The first segment is hexagonal; And / or, the second segment is circular or elliptical; And / or, the body further includes: The first sleeve is connected to the second end of the connector; The second sleeve is connected to the end of the first sleeve away from the connector, and the end of the second sleeve away from the first sleeve is also provided with a limiting part.

9. A battery pack, characterized in that, It includes a housing and a suspension point structure as described in any one of claims 1-8 disposed on the housing.

10. A vehicle, characterized in that, Includes the battery pack as described in claim 9.

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