Battery pack upper shell mounting structure, battery pack shell structure and battery pack
By designing the bent and molded mounting bracket and foam support, the problem that the installation structure of the traditional battery pack housing cannot absorb torsion and deformation is solved, and the effect of reducing stress concentration and improving installation strength is achieved.
Patent Information
- Application Number
- CN202420097352.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-15
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-01-15
AI Technical Summary
The installation structure of the traditional battery pack housing is rigidly connected and cannot absorb the micro deformation caused by torsion, resulting in an increase in the tangential force at the bolt position and easily attenuate the torque.
Design a battery-pack housing installation structure, including a bent mounting bracket, having a first plate body, a second plate body and an intermediate plate body, a nut and a foam support part are provided on the second plate body, and the mounting bracket is installed It has a "Z" shape, and uses elastic deformation to absorb deformation and reduce stress concentration.
Effectively absorb the deformation of the installation site, reduce stress accumulation, improve installation strength and accuracy, and prevent the bracket from yielding or breaking due to excessive deformation.
Smart Images
Figure CN222300785U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of battery packs, and in particular to a battery pack upper shell mounting structure. At the same time, the utility model also relates to a battery pack shell structure provided with the battery pack upper shell mounting structure, and a battery pack having the battery pack shell structure. Background Art
[0002] When the traditional upper battery pack shell is installed on the lower battery pack shell, a connection point is usually set on the upper battery pack shell, and a mounting point corresponding to the connection point is set on the lower battery pack shell. At the same time, welding or riveting threaded fixing points are made at the mounting points of the lower battery pack shell. However, this mounting structure is a rigid connection, which causes the battery pack to be unable to absorb the micro-deformation caused by torsion when the whole vehicle is twisted, which easily causes the tangential force at the bolt position to increase and the torque to be easily attenuated. Utility Model Content
[0003] In view of this, the utility model aims to provide a battery pack upper shell mounting structure, which can better absorb deformation and reduce stress concentration at the mounting position.
[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:
[0005] A battery pack upper shell mounting structure, comprising a mounting bracket disposed on the battery pack lower shell;
[0006] The mounting bracket is formed by bending a plate, and comprises a first plate and a second plate spaced apart in an upper and lower manner, and an intermediate plate disposed between the first plate and the second plate. The first plate is connected to the lower shell of the battery pack, and the second plate is provided with a mounting portion for mounting the upper shell of the battery pack. The intermediate plate is smoothly connected to the first plate and the second plate.
[0007] Furthermore, the first plate body and the second plate body are respectively arranged on two opposite sides of the middle plate body, and the mounting bracket is formed into a "Z" shape.
[0008] Furthermore, the mounting portion includes a nut provided on the second plate body, and a through hole provided on the second plate body corresponding to the nut.
[0009] Furthermore, an elastic support portion is sandwiched between the second plate and the lower shell of the battery pack;
[0010] The supporting portion is disposed around the nut.
[0011] Further, the support portion includes foam disposed between the second plate and the lower shell of the battery pack;
[0012] The foam is in a ring shape and is arranged around the nut.
[0013] Furthermore, the battery pack lower shell includes a lower shell body and a mounting beam provided on the lower shell body;
[0014] The first plate is connected to the mounting beam.
[0015] Furthermore, a through hole is provided on the top of the mounting beam, and the through hole is arranged corresponding to the nut.
[0016] Compared with the prior art, the utility model has the following advantages:
[0017] The battery pack upper shell mounting structure described in the utility model can facilitate the installation of the battery pack upper shell on the battery pack lower shell by making the mounting bracket have a first plate body connected to the battery pack lower shell and a second plate body for mounting the battery pack upper shell; and the mounting bracket is formed by bending the plate body, so that the bending part of the mounting bracket can be utilized to generate a small elastic deformation when the mounting bracket is subjected to force, thereby absorbing the deformation of the mounting position and reducing the stress accumulation at the mounting position.
[0018] In addition, the second plate body and the first plate body are respectively arranged on two opposite sides of the middle plate body, which can facilitate the connection between the first plate body and the lower shell of the battery pack, and also facilitate the connection between the second plate body and the upper shell of the battery pack. The mounting portion includes a nut arranged on the second plate body, which has a simple structure and also facilitates the installation of the upper shell of the battery pack on the lower shell of the battery pack. By providing an elastic support portion, when the deformation of the mounting bracket is large, the support portion can be used to support it, which can effectively prevent the mounting bracket from yielding or even breaking due to excessive deformation, and can protect the mounting bracket.
[0019] Secondly, the support part includes foam disposed between the second plate and the lower shell of the battery pack, which has a simple structure and is easy to design and implement, and the foam is in a ring shape disposed around the nut, and the nut can be used to limit the foam. Connecting the first plate to the mounting crossbeam can facilitate the strength of the mounting crossbeam itself and improve the mounting strength of the upper shell of the battery pack.
[0020] In addition, a through hole is provided on the top of the mounting crossbeam, and the through hole is arranged corresponding to the nut, which can prevent the long bolts screwed to the nut from interfering with the mounting crossbeam. The first plate body is connected to the lower shell of the battery pack by riveting, so that the first plate body and the lower shell of the battery pack have better connection strength, and can play an anti-rotation role, which can improve the accuracy of the installation of the mounting bracket.
[0021] Another object of the present utility model is to provide a battery pack shell structure, comprising a battery pack lower shell and a battery pack upper shell, wherein the battery pack upper shell mounting structure as described above is provided between the battery pack upper shell and the battery pack lower shell.
[0022] In addition, the utility model also relates to a battery pack, which is provided with the battery pack shell structure as described above.
[0023] The battery pack and battery pack shell structure described in the present invention have the same beneficial effects as the above-mentioned battery pack lower shell relative to the prior art, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:
[0025] Figure 1 It is a structural schematic diagram of the upper housing installation structure of the battery pack according to an embodiment of the utility model;
[0026] Figure 2 A cross-sectional view of the upper housing mounting structure of the battery pack according to an embodiment of the utility model;
[0027] Description of reference numerals:
[0028] 1. Mounting bracket; 2. Rivets; 3. Mounting beam; 4. Nuts; 5. Foam;
[0029] 101. A first plate; 102. A second plate; 103. An intermediate plate. DETAILED DESCRIPTION
[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0031] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0032] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood in combination with specific circumstances.
[0033] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.
[0034] This embodiment relates to a battery pack upper shell mounting structure, including a mounting bracket 1 provided on the battery pack lower shell, the mounting bracket 1 is formed by bending a plate, and has a first plate 101 and a second plate 102 spaced apart from each other, and an intermediate plate 103 provided between the first plate 101 and the second plate 102. In addition, the first plate 101 is connected to the battery pack lower shell, the second plate 102 is provided with a mounting portion for mounting the battery pack upper shell, and the intermediate plate 103 is smoothly connected to the first plate 101 and the second plate 102.
[0035] The battery pack upper shell mounting structure of this embodiment can facilitate the installation of the battery pack upper shell on the battery pack lower shell by making the mounting bracket 1 have a first plate body 101 connected to the battery pack lower shell and a second plate body 102 for mounting the battery pack upper shell. The mounting bracket 1 is formed by bending the plate body, so that the bending part of the mounting bracket 1 can produce a small elastic deformation when the mounting bracket 1 is subjected to force, thereby absorbing the deformation of the mounting part and reducing the accumulation of stress at the mounting part.
[0036] Based on the above overall introduction, an exemplary structure of the battery pack upper shell installation structure of this embodiment is as follows: Figure 1 and Figure 2 As shown in , it can be understood that, in a specific implementation, in order to ensure the installation structure of the upper shell of the battery pack, the mounting bracket 1 is usually set at multiple positions. This embodiment only takes the mounting bracket 1 at one position as an example for explanation. In addition, as a preferred embodiment, the second plate body 102 and the first plate body 101 of this embodiment are respectively arranged on two opposite sides of the middle plate body 103, and the mounting bracket 1 is in a "Z" shape.
[0037] Among them, the middle plate 103 has two curved parts, and the curvature values of the two curved parts are the same, but the bending directions are opposite. The above-mentioned "smooth transition connection" specifically refers to that the inner and outer surfaces of the curved part are arc-shaped, the two curved parts are smoothly connected, and the first plate 101 and the second plate 102 extend along the tangent direction of the corresponding curved parts respectively. Thereby, it can further facilitate the slight change of the curved part to better absorb the deformation at the mounting part, and reduce the accumulation of stress at the bolts described below. It should be noted that in addition to arranging the first plate 101 and the second plate 102 on two opposite sides of the middle plate 103 respectively, they can also be located on the same side of the middle plate 103, that is, at this time, the mounting bracket 1 is roughly "C" shaped.
[0038] like Figure 2 As shown in, as a preferred embodiment, the mounting portion includes a nut 4 disposed on the second plate 102, and a through hole disposed on the second plate 102 corresponding to the nut 4. The nut 4 is located below the second plate 102, and the nut 4 can be welded or bonded to the second plate 102. Furthermore, in order to improve the firmness of the nut 4 on the second plate 102, part of the nut 4 can be embedded in the through hole. In addition, it can be understood that the number of through holes and nuts 4 is not limited to Figure 1 The number can be adjusted accordingly according to the needs.
[0039] As a further embodiment, an elastic support portion is sandwiched between the second plate 102 and the lower shell of the battery pack, and the support portion is arranged around the nut 4. In this way, when the mounting bracket 1 has a large deformation, the support portion can be used to support it, which can effectively prevent the mounting bracket 1 from yielding or even breaking due to excessive deformation, and can protect the mounting bracket 1. Figure 2 As shown in , as a preferred embodiment, the support portion of this embodiment includes a foam 5 arranged between the second plate body 102 and the lower shell of the battery pack, and the foam 5 is in a ring shape arranged around the nut 4.
[0040] The support part of this embodiment adopts foam 5, which has a simple structure and is easy to design and implement. The foam 5 is in a ring shape and is arranged around the nut 4. The nut 4 can be used to limit the foam 5. Obviously, in addition to the foam 5, other structures such as springs are also feasible. In addition, in order to improve the installation effect of the upper shell of the battery pack, as a preferred embodiment, combined with Figure 1 and Figure 2 As shown in , the lower shell of the battery pack includes a lower shell body and a mounting beam 3 arranged on the lower shell body, and the first plate 101 is specifically connected to the mounting beam 3.
[0041] The first plate 101 is connected to the mounting crossbeam 3, and the strength of the mounting crossbeam 3 can be utilized to improve the mounting strength of the upper shell of the battery pack. Figure 2 As shown in , as a further embodiment, a through hole is provided on the top of the mounting beam 3, and the through hole is provided corresponding to the nut 4. In addition, as a preferred embodiment, the first plate 101 of this embodiment is riveted to the lower shell of the battery pack by rivets 2.
[0042] Specifically, the first plate 101 is connected to the mounting crossbeam 3 by riveting. This design can ensure that the first plate 101 and the lower shell of the battery pack have a good connection strength, and can play an anti-rotation role, and can improve the accuracy of the installation of the mounting bracket 1. The number of rivets 2 is not limited to Figure 1 The two shown in the figure may also be set to one, or more. Of course, it is feasible to connect the first plate 101 to the mounting crossbeam 3 by welding or screwing.
[0043] The battery pack upper shell installation structure of this embodiment can absorb the deformation caused by the movement of the bolts and reduce the accumulation of stress at the bolts by adopting the above structure.
[0044] In addition, the present embodiment also relates to a battery pack shell structure, including a battery pack lower shell and a battery pack upper shell, and the above-mentioned battery pack upper shell installation structure is provided between the battery pack upper shell and the battery pack lower shell.
[0045] Here, it should be noted that the upper shell of the battery pack can be installed on the lower shell of the battery pack only by the above-mentioned installation structure, and can also be installed on the lower shell of the battery pack in conjunction with other conventional structures.
[0046] In addition, the present embodiment also relates to a battery pack having the above-mentioned battery pack shell structure.
[0047] The battery pack and battery pack shell structure of this embodiment have all the beneficial effects of the above-mentioned battery pack upper shell installation structure, which will not be described in detail here.
[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A battery pack upper housing mounting structure, characterized in that: It comprises a mounting bracket (1) arranged on the lower shell of the battery pack; The mounting bracket (1) is formed by bending a plate, and comprises a first plate (101) and a second plate (102) which are spaced apart from each other, and an intermediate plate (103) arranged between the first plate (101) and the second plate (102), wherein the first plate (101) is connected to the lower shell of the battery pack, and the second plate (102) is provided with a mounting portion for mounting the upper shell of the battery pack, and the intermediate plate (103) is connected to the first plate (101) and the second plate (102) in a smooth transition.
2. The battery pack upper housing mounting structure according to claim 1, characterized in that: The first plate body (101) and the second plate body (102) are respectively arranged on two opposite sides of the middle plate body (103), and make the mounting bracket (1) present a "Z" shape.
3. The battery pack upper housing mounting structure according to claim 1, characterized in that: The mounting portion comprises a nut (4) arranged on the second plate body (102), and a through hole corresponding to the nut (4) and arranged on the second plate body (102).
4. The battery pack upper housing mounting structure according to claim 3, characterized in that: An elastic supporting portion is sandwiched between the second plate (102) and the lower shell of the battery pack; The supporting portion is arranged around the nut (4).
5. The battery pack upper housing mounting structure according to claim 4, characterized in that: The support portion comprises a foam (5) arranged between the second plate (102) and the lower shell of the battery pack; The foam (5) is in a ring shape and is arranged around the nut (4).
6. The battery pack upper housing mounting structure according to claim 3, characterized in that: The battery pack lower shell comprises a lower shell body and a mounting crossbeam (3) arranged on the lower shell body; The first plate body (101) is connected to the mounting crossbeam (3).
7. The battery pack upper housing mounting structure according to claim 6, characterized in that: A through hole is provided on the top of the mounting crossbeam (3), and the through hole is arranged corresponding to the nut (4).
8. The battery pack upper housing mounting structure according to any one of claims 1 to 7, characterized in that: The first plate body (101) is riveted to the lower shell of the battery pack via rivets (2).
9. A battery pack housing structure, characterized in that: The battery pack comprises a battery pack lower shell and a battery pack upper shell, and a battery pack upper shell mounting structure as claimed in any one of claims 1 to 8 is arranged between the battery pack upper shell and the battery pack lower shell.
10. A battery pack, characterized in that: The battery pack is provided with the battery pack shell structure as claimed in claim 9.