CN213093305U

CN213093305U - Bushing structure, battery package and vehicle

Info

Publication number: CN213093305U
Application number: CN202022478120.6U
Authority: CN
Inventors: 王路; 黄毅轩; 张德磊; 孙艳; 邢龙成; 郭志远; 翟江义; 侯远强; 贾鹏
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-04-30
Anticipated expiration: 2030-10-29

Abstract

The utility model relates to a bush structure, battery package and vehicle, this bush structure is used for fixed connection to wear to establish in order to supply the fastener in the boundary beam board of battery package casing, in order to be used for installing the battery package casing in the automobile body, including barrel and butt portion, the inside of barrel is formed with along the wear to establish hole that its axial link up, in order to be used for supplying the fastener to wear to establish, and butt portion sets up in the first periphery wall of barrel and radially outwards extends along the barrel, and the barrel is used for wearing to establish the mounting hole on the boundary beam board, butt portion be used for with the face butt and the fixed connection in this face of boundary beam board. In above-mentioned technical scheme, through being barrel and butt portion two parts with the bushing structure design, butt portion is used for with the face butt of boundary beam board and fixed connection on this face, and then can increase the area of contact of this bushing structure and boundary beam board effectively to can avoid appearing stress concentration's problem between bushing structure and the boundary beam board effectively, avoid the cracked condition of boundary beam board emergence, the lightweight design of the battery package of being convenient for.

Description

Bushing structure, battery package and vehicle

Technical Field

The present disclosure relates to the field of vehicle technology, and in particular, to a bushing structure, a battery pack, and a vehicle.

Background

With the vigorous popularization of the new energy field in China, the electric automobile becomes the mainstream trend of the automobile in the future, and the battery pack of the electric automobile is taken as one of the cores of the design of the electric automobile, so that the structural strength is met and the lightweight design is required.

When an existing battery pack is installed, fasteners such as bolts and the like are often arranged in a penetrating manner by utilizing a lining welded on a side beam plate of a battery pack shell, so that the battery pack is installed on a vehicle body; however, when the battery pack vibrates randomly with a vehicle, stress concentration is caused at the welded part of the bushing and the side sill plate and the heat affected zone of the welding, and the side sill plate is easy to break; the existing solution is that the thickness of the edge beam plate is increased integrally, but the design of light weight of the battery pack is inconvenient.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a bush structure, battery package and vehicle, this bush structure can avoid its and the battery package casing the junction of boundary beam board to appear stress concentration's problem, and need not to increase the thickness of boundary beam slab board, the lightweight design of the battery package of being convenient for.

In order to achieve the above object, the present disclosure provides a bushing structure, which is used for fixedly connecting to a side beam plate of a battery pack case so as to allow a fastener to penetrate, so as to install the battery pack case on a vehicle body, the bushing structure includes a cylinder and an abutting portion, a penetrating hole penetrating along an axial direction of the cylinder is formed inside the cylinder so as to allow the fastener to penetrate, the abutting portion is disposed on a first peripheral wall of the cylinder and extends outwards along a radial direction of the cylinder, the cylinder is used for penetrating through a mounting hole on the side beam plate, and the abutting portion is used for abutting against a plate surface of the side beam plate and fixedly connecting to the plate surface.

Optionally, the bushing structure further includes a rotation preventing portion, the rotation preventing portion is disposed on the first peripheral wall of the cylinder and extends outward in the radial direction of the cylinder, the rotation preventing portion is located on one side of the abutting portion close to the mounting hole, the rotation preventing portion extends in the axial direction of the cylinder and is used for abutting against the inner wall of the mounting hole, and the second peripheral wall is surrounded into a non-circular shape.

Optionally, the second peripheral wall includes two first outer walls and two second outer walls, which are oppositely disposed in the radial direction of the cylinder, the first outer walls are configured as arc-shaped surfaces, and the second outer walls are configured as planes.

Optionally, the abutting portion comprises a third peripheral wall extending along the axial direction of the cylinder, the third peripheral wall comprises a third outer wall and a fourth outer wall which are connected with each other, the third outer wall is configured to be an arc-shaped surface, the fourth outer wall is configured to be a plane, and the fourth outer wall configured to be a plane is used for being flush with the second outer wall far away from one side of the battery module.

Optionally, the abutting portion is constructed as a plate body structure extending along the radial direction of the cylinder body, the plate body structure is arranged at the end portion of the cylinder body along the axial direction of the cylinder body, the plate body structure is used for being close to the first plate body surface of the mounting hole and abutting against the plate surface of the side beam plate, and the plate body structure is used for being far away from the second plate body surface of the mounting hole and abutting against the vehicle body.

Optionally, the barrel and the abutment are of an integrally formed construction.

The utility model also provides a battery pack, battery pack include battery package casing and bushing structure, battery package casing includes two boundary beam boards that extend along length direction, and two the boundary beam board is located respectively battery package casing is along the relative both sides of width direction, follow on the boundary beam board length direction interval is provided with a plurality ofly the mounting hole.

Optionally, the bushing structure further includes a rotation preventing portion, the rotation preventing portion is disposed on the first peripheral wall of the cylinder and extends outward in the radial direction of the cylinder, the rotation preventing portion is located on one side of the abutting portion, which is close to the mounting hole, the rotation preventing portion is used for abutting against the inner wall of the mounting hole along the second peripheral wall of the cylinder, which extends in the axial direction of the cylinder, the second peripheral wall is enclosed into a non-circular shape, and the shape of the mounting hole is matched with the shape of the second peripheral wall.

Optionally, the battery pack further includes a battery module disposed in the battery pack case, the side beam plate is configured as a profile structure, the profile structure includes a first panel and a plurality of reinforcing ribs, the plurality of reinforcing ribs are connected to the first panel in a first region close to the battery module, the first panel is formed with the mounting hole, and the abutting portion of the bushing structure at least partially covers the first region.

The present disclosure additionally provides a vehicle comprising a vehicle body and the battery pack.

In above-mentioned technical scheme, through being barrel and butt portion two parts with the bush structural design, butt portion is used for with the face butt of boundary beam board and fixed connection on this face, and then can increase the area of contact of this bush structure and boundary beam board effectively to can avoid appearing stress concentration's problem between bush structure and the boundary beam board effectively, avoid the cracked condition of boundary beam board emergence, need not to increase the thickness of boundary beam board, the lightweight design of battery package of being convenient for.

Additional features and advantages of the disclosure will be set forth in the detailed description which follows.

Drawings

The accompanying drawings, which are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure without limiting the disclosure. In the drawings:

fig. 1 and 2 are schematic structural views of the overall structure of a bushing structure according to an embodiment of the present disclosure;

FIG. 3 is a schematic view of an assembly structure of a bushing structure and a battery pack case according to an embodiment of the present disclosure;

fig. 4 is a cross-sectional view of an embodiment of the bushing structure of the present disclosure assembled with a side sill plate of a battery pack housing.

Description of the reference numerals

1 barrel 11 through hole

12 first peripheral wall 2 abutment

21 third peripheral wall 211 third outer wall

212 fourth outer wall 213 first plate body face

214 second plate surface 3 anti-rotation part

31 second outer peripheral wall 311 first outer wall

312 second outer wall 10 liner construction

20 fastener 201 bolt

202 projection welded nut 30 body

100 side beam plate 101 mounting hole

102 face 103 first face

104 first region of ribs 105

106 second panel 1000 battery can casing

Detailed Description

The following detailed description of specific embodiments of the present disclosure is provided in connection with the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present disclosure, are given by way of illustration and explanation only, not limitation.

In the present disclosure, when the terms of orientation such as "width direction, length direction" are used without being described to the contrary, the term "L" denotes the length direction, "W" denotes the width direction of the battery pack case, and specifically, refer to fig. 3; use of directional words such as "inner and outer" refers to the inner and outer of a particular structural profile; in addition, terms such as "first, second, and third" are used merely to distinguish one element from another, and are not sequential or significant.

As shown in fig. 1 to 4, the present disclosure provides a bushing structure for fixedly coupling to an edge beam plate 100 of a battery pack case 1000 for a fastener 20 to pass through for mounting the battery pack case 1000 to a vehicle body 30. This bushing structure 10 includes barrel 1 and butt portion 2, and the inside of barrel 1 is formed with along the through hole 11 that its axial link up to be used for supplying fastener 20 to wear to establish, and butt portion 2 sets up in the first periphery wall 12 of barrel 1 and radially outwards extends along barrel 1, and barrel 1 is used for wearing to establish mounting hole 101 on the boundary beam board 100, and butt portion 2 is used for with the face 102 butt of boundary beam board 100 and fixed connection in this face 102.

In the above technical scheme, through designing bushing structure 10 into barrel 1 and butt portion 2 two parts, butt portion 2 is used for with the face 102 butt of boundary beam board 100 and fixed connection on this face 102, and then can increase the area of contact of this bushing structure 10 and boundary beam board 100 effectively, thereby can avoid effectively appearing stress concentration's problem between bushing structure 10 and the boundary beam board 100, avoid boundary beam board 100 to take place cracked condition, need not to increase the thickness of boundary beam board 100, the lightweight design of battery package of being convenient for.

Alternatively, the fastener 20 may be composed of a bolt 201 and a projection nut 202, a shank of the bolt 201 passes through the through hole 20 and the vehicle body 30 in sequence for connecting with the projection nut 202, and the projection nut 202 may be welded to the vehicle body 30 to improve the stability of the connection; the head of the bolt 201 is used to abut against the cylindrical body 1, and the battery pack is mounted on the vehicle body 30 by the bolt 201 and the projection nut 202.

In addition, the abutting portion 2 may be fixed to the plate surface 102 by welding, and when the contact area between the abutting portion 2 and the plate surface 102 is increased, the area of the weld joint is also increased, so that the stress on the weld joint and the welding heat affected zone is reduced, the welding stability is improved, and the risk of fracture due to the large stress is avoided.

In one embodiment, referring to fig. 1 and 2, the bushing structure 10 further includes a rotation preventing portion 3, the rotation preventing portion 3 is disposed on the first outer circumferential wall 12 of the cylinder 1 and extends outward in the radial direction of the cylinder 1, the rotation preventing portion 3 is configured to be located on a side of the abutting portion 2 close to the mounting hole 101, the second outer circumferential wall 31 of the rotation preventing portion 3 extending in the axial direction of the cylinder 1 is configured to abut against an inner wall of the mounting hole 101, and the second outer circumferential wall 31 is surrounded in a non-circular shape.

In this embodiment, by designing the second peripheral wall 31 to have a non-circular shape, the shape of the mounting hole 101 should also match the non-circular shape of the second peripheral wall 31, and when the second peripheral wall 31 abuts against the inner wall of the mounting hole 101, a stopper effect on the bushing structure 10 can be achieved, and rotation of the bushing structure 10 when it is fixed to the side sill plate 100 by welding or the like can be prevented, which facilitates the operation of fixing and connecting by an operator, and it is not necessary to separately design a stopper structure to limit the bushing structure 10, thereby simplifying the design and reducing the design cost.

Alternatively, referring to fig. 1 and 2, the second peripheral wall 31 includes two first outer walls 311 and two second outer walls 312 disposed opposite to each other in the radial direction of the cylinder 1, the first outer walls 311 are configured as arc-shaped surfaces, and the second outer walls 312 are configured as flat surfaces. Accordingly, as shown in fig. 3, the shape of the mounting hole 101 of the side sill 100 is also matched with the shape of the second peripheral wall 31, so that the rotation of the bushing structure 10 in the mounting hole 101 can be effectively restricted. Of course, the present disclosure does not limit the specific shape of the second peripheral wall 31, and other non-circular shapes, such as a rectangle, a parallelogram, etc., may be designed.

Referring to fig. 1 and 2, the abutment 2 may include a third peripheral wall 21 extending in the axial direction of the cylinder 1, the third peripheral wall 21 including a third outer wall 211 and a fourth outer wall 212 connected to each other, the third outer wall 211 being configured as an arc-shaped face, the fourth outer wall 212 being configured as a flat face, and the fourth outer wall 212 being configured as a flat face for being flush with the second outer wall 312 on a side away from the battery module (not shown).

In other words, the plane of the abutting portion 2 defined between the third outer wall 211 and the second outer peripheral wall 31 is used for abutting against the plate surface 102 of the side sill plate 100, and this plane portion can be understood as a side of the abutting portion 2 close to the battery module, and when the battery pack vibrates randomly, the side sill plate 100 corresponding to this plane portion is more likely to have stress concentration, so that by increasing the contact area between the side of the abutting portion 2 close to the battery module and the side sill plate 100, the stress concentration can be effectively reduced, and the occurrence of fracture can be avoided.

The fourth outer wall 212 is designed to be flat, and the fourth outer wall 212 configured to be flat is used to be flush with the second outer wall 312 at a side away from the battery module. The first reason is that, in the case of random vibration of the battery pack, stress concentration rarely occurs on the side of the side sill plate 100 away from the battery module, and therefore, there is no need to increase the area between the abutting portion 2 and the plate surface 102 of the side sill plate 100 on this side; reason two, the one side that battery module was kept away from to boundary beam board 100 often can be designed into the energy-absorbing structure that can take place to warp to can take place to burst under the great condition of battery package atress and contract and warp and then absorb the energy, protect this battery package, if extend the one side of keeping away from battery module with butt portion 2, can appear making the energy-absorbing structure of boundary beam board 100 can't burst and contract and warp and carry out the energy-absorbing because of butt portion 2's rigidity is great, thereby cause the harm to the battery package.

In one embodiment, as shown in fig. 1 and 4, the abutting portion 2 is configured as a plate structure extending in the radial direction of the tubular body 1, the plate structure being provided at an end portion of the tubular body 1 in the axial direction thereof, and the plate structure being configured such that a first plate surface 213 near the mounting hole 101 is configured to abut against the plate surface 102 of the side sill plate 100, and the plate structure being configured such that a second plate surface 214 distant from the mounting hole 101 is configured to abut against the vehicle body 30.

In this embodiment, first, the first plate surface 213 for approaching the mounting hole 101 is used to abut against the plate surface 102 of the side sill plate 100, and the contact area between the bushing structure 10 and the side sill plate 100 can be effectively increased, thereby reducing the stress concentration; next, the second plate surface 214 away from the mounting hole 101 is used to abut against the vehicle body 30, and the contact area between the bushing structure 10 and the vehicle body 30 can be increased, thereby improving the stability of connection to the vehicle body 30.

In one embodiment, the barrel 1 and the abutting portion 2 are integrally formed, so that the bush structure 10 is convenient to form, and the manufacturing process difficulty is simplified. Of course, the present disclosure is not limited to the molding manner of the bushing structure 10, and for example, the cylinder 1 and the abutting portion 2 may be connected to each other by welding.

Alternatively, the above-mentioned bushing structure 10 is made of an aluminum material, and the bushing structure 10 made of an aluminum material may be fixed to the sill plate 100 by welding. However, the present disclosure is not limited to the specific material of the bushing structure 10, and other rigid metals, such as stainless steel, may be used.

In a second aspect of the present disclosure, referring to fig. 3, a battery pack is provided, which includes a battery pack case 1000, and the above-described bushing structure 10. The battery can body 1000 includes two side beam plates 100 extending along the length direction, the two side beam plates 100 are respectively located at two opposite sides of the battery can body 1000 along the width direction, and a plurality of mounting holes 101 are arranged on the side beam plates 100 at intervals along the length direction. By providing a plurality of bushing structures 10 at a plurality of mounting holes 101, the battery pack can be fixed to the vehicle body 30 by a plurality of fasteners 20, and the stability of the battery pack connection is ensured.

Optionally, the shape of the mounting hole 101 is adapted to the non-circular shape of the second peripheral wall 31, so that the bushing structure 10 can be prevented from rotating when being fixed to the side sill plate 100, thereby facilitating the operation of the operator.

In one embodiment, the battery pack case 1000 may be a lower case or an upper case of a battery pack, but the present disclosure is not limited thereto.

Referring to fig. 4, the battery pack further includes a battery module (not shown) disposed in the battery pack case 1000, the side sill 100 is configured as a profile structure including a first panel 103, and a plurality of beads 104, the plurality of beads 104 are connected to the first panel 103 in a first region 105 adjacent to the battery module, the first panel 103 is formed with a mounting hole 101, and the abutting portion 2 of the bushing structure 10 at least partially covers the first region 105.

By at least partially covering the first region 105 with the abutting portion 2 of the bushing structure 10, i.e., by abutting the abutting portion 2 against the joint between the first panel 103 and the plurality of ribs 104, the plurality of ribs 104 can disperse stress, avoid stress concentration, and increase the service life of the edge beam panel 100.

In addition, a second panel 106 is further provided below the first panel 103, a through hole through which the fastener 20 is inserted is formed in the second panel 106, and an end of the cylinder 1 of the bushing structure 10 abuts against the second panel so that the through hole 11 and the through hole are coaxial.

For example, the fastener 20 may be composed of a bolt 201 and a projection nut 202, a shank of the bolt 201 sequentially passes through the through hole, the through hole 20, and the vehicle body 30 for connection with the projection nut 202, and the projection nut 202 may be welded to the vehicle body 30 to improve the stability of the connection; the head of the bolt 201 is adapted to abut the second panel 106. That is, in addition to the connection relationship between the bushing structure 10 and the first panel 103, the bushing structure 10 is also connected to the second panel 106, and the three-dimensional profile structure formed by the first panel 103 and the second panel 106 can further improve the stability of the connection with the bushing structure 10.

The present disclosure additionally provides a vehicle including a vehicle body 30 and the battery pack described above.

The preferred embodiments of the present disclosure are described in detail with reference to the accompanying drawings, however, the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present disclosure within the technical idea of the present disclosure, and these simple modifications all belong to the protection scope of the present disclosure. It should be noted that, in the foregoing embodiments, various features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various combinations that are possible in the present disclosure are not described again.

In addition, any combination of various embodiments of the present disclosure may be made, and the same should be considered as the disclosure of the present disclosure, as long as it does not depart from the spirit of the present disclosure.

Claims

1. The utility model provides a bush structure for fixed connection is in order to supply fastener (20) to wear to establish in the boundary beam board (100) of battery package casing (1000), with be used for with install in automobile body (30) battery package casing (1000), characterized in that, bush structure (10) include barrel (1) and butt portion (2), the inside of barrel (1) is formed with along its axial through-going perforation hole (11) for supply fastener (20) wear to establish, butt portion (2) set up in first periphery wall (12) of barrel (1) and along the radial outside extension of barrel (1), barrel (1) are used for wearing to establish mounting hole (101) on boundary beam board (100), butt portion (2) be used for with face (102) butt of boundary beam board (100) and fixed connection in this face (102).

2. The bushing structure of claim 1, wherein the bushing structure (10) further comprises a rotation prevention portion (3), the rotation prevention portion (3) is disposed on a first outer peripheral wall (12) of the cylinder (1) and extends outward in a radial direction of the cylinder (1), the rotation prevention portion (3) is used for being located on a side of the abutting portion (2) close to the mounting hole (101), a second outer peripheral wall (31) of the rotation prevention portion (3) extending in an axial direction of the cylinder (1) is used for abutting against an inner wall of the mounting hole (101), and the second outer peripheral wall (31) encloses a non-circular shape.

3. A bushing arrangement according to claim 2, characterized in that the second peripheral wall (31) comprises two first outer walls (311) and two second outer walls (312) arranged diametrically opposite of the cylinder (1), the first outer walls (311) being configured as arc-shaped faces and the second outer walls (312) being configured as flat faces.

4. A bushing arrangement according to claim 3, characterized in that the abutment (2) comprises a third peripheral wall (21) extending in the axial direction of the cylinder (1), the third peripheral wall (21) comprising an interconnecting third outer wall (211) and a fourth outer wall (212), the third outer wall (211) being configured as an arc-shaped face, the fourth outer wall (212) being configured as a plane, and the fourth outer wall (212) being configured as a plane for being flush with the second outer wall (312) at the side remote from the battery module.

5. A bushing arrangement in accordance with any one of claims 1-4, characterized in that the abutment (2) is configured as a plate structure extending in the radial direction of the cylinder (1), which is provided at the end of the cylinder (1) in its axial direction and which is intended for a first plate face (213) close to the mounting hole (101) for abutment with the plate face (102) of the sill plate (100) and for a second plate face (214) remote from the mounting hole (101) for abutment with the body (30).

6. A bushing arrangement according to any of claims 1-4, characterized in that the cartridge (1) and the abutment (2) are of one-piece construction.

7. A battery pack, characterized in that the battery pack comprises a battery pack housing (1000), and a bushing structure (10) according to any one of claims 1-6,

the battery pack shell (1000) comprises two side beam plates (100) extending along the length direction, the two side beam plates (100) are respectively located on two opposite sides of the battery pack shell (1000) along the width direction, and a plurality of mounting holes (101) are formed in the side beam plates (100) at intervals along the length direction.

8. The battery pack according to claim 7, wherein the bushing structure (10) further comprises a rotation prevention portion (3), the rotation prevention portion (3) is disposed on a first outer peripheral wall (12) of the cylinder (1) and extends outward in a radial direction of the cylinder (1), the rotation prevention portion (3) is configured to be located on a side of the abutting portion (2) close to the mounting hole (101), a second outer peripheral wall (31) of the rotation prevention portion (3) extending in an axial direction of the cylinder (1) is configured to abut against an inner wall of the mounting hole (101), the second outer peripheral wall (31) is configured to enclose a non-circular shape, and a shape of the mounting hole (101) is adapted to a shape of the second outer peripheral wall (31).

9. The battery pack according to claim 7, further comprising a battery module disposed in the battery pack case (1000),

the side beam plate (100) is configured to be a profile structure, the profile structure comprises a first panel (103) and a plurality of reinforcing ribs (104), the reinforcing ribs (104) are connected to the first panel (103) in a first area (105) close to the battery module, the mounting hole (101) is formed in the first panel (103), and the abutting part (2) of the bushing structure (10) at least partially covers the first area (105).

10. A vehicle, characterized in that the vehicle comprises a body (30) and a battery pack according to any one of claims 7-9.