CN217881709U

CN217881709U - Battery package side frame, battery package and vehicle

Info

Publication number: CN217881709U
Application number: CN202222183314.2U
Authority: CN
Inventors: 蔺甲; 郭建保; 周荣青
Original assignee: Great Wall Motor Co Ltd
Current assignee: Great Wall Motor Co Ltd
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2022-11-22
Anticipated expiration: 2032-08-18

Abstract

The utility model provides a battery pack side frame, battery pack and vehicle belongs to the technical field of power batteries, and comprises a frame body, wherein the frame body is provided with a cavity, the cavity is communicated in the length direction of the frame body, a partition plate is arranged in the frame body and is parallel to an outer side plate of the frame body, the upper end and the lower end of the partition plate are respectively connected with a top plate and a bottom plate of the frame body, and the cavity is divided into a first cavity and a second cavity by the partition plate; a first reinforcing plate is arranged between the outer side plate and the partition plate, and divides the first cavity into a plurality of first sub-cavities; the second reinforcing plate is arranged between the separating plate and the inner side plate of the frame body and divides the second cavity into a plurality of second sub-cavities. The battery pack provided by the utility model can improve the side impact load from the tire and the barrier when 64SORB of the whole vehicle collides, so as to better resist deformation; bump the operating mode at the side post, a plurality of reinforcing plates of battery package side frame can increase the side post and bump the frame and inhale the energy, better protection battery module.

Description

Battery package side frame, battery package and vehicle

Technical Field

The utility model belongs to the technical field of power battery, concretely relates to battery package side frame, battery package and vehicle.

Background

At present, automobile safety regulations are becoming more complete and strict, and a rigid obstacle collision (hereinafter referred to as "64 SORB") of 25% width of front vehicles of 64km/h in a Chinese insurance automobile safety index (hereinafter referred to as "C-IASI") test and evaluation system puts higher strength requirements on a doorsill beam and a door ring. The requirement of long endurance mileage of pure Electric Vehicle (EV) type promotes the increase of the whole space size of the battery pack, and the side frame of most of the battery packs is mounted on the sill beam. The side pillar crash test in the C-NCAP regulatory rules (2021 edition) also puts higher demands on the sill beam strength and battery pack safety protection of pure electric vehicle models.

The pure electric vehicle model can cope with the 64SORB working condition of the C-IASI and the side column collision working condition of the C-NCAP, and mainly in the traditional threshold beam design, the longitudinal rigidity of the threshold beam under the 64SORB working condition is improved by adding an extruded aluminum section component, and meanwhile, the bending rigidity and deformation energy absorption of the threshold beam under the side column collision working condition are increased. The side frame of the battery pack mainly focuses on the installation and fixation of the protection module and the battery pack, and the improvement effect on the 64SORB and the side column collision is limited.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a battery package side frame, battery package and vehicle aims at promoting the collision energy-absorbing effect of battery package to do benefit to the lightweight of whole car and integrate.

In order to achieve the above object, in a first aspect, an embodiment of the present invention provides a battery pack side frame, which includes a frame body, the frame body has a cavity, the cavity is through in a length direction of the frame body, a partition plate is arranged in the frame body, the partition plate is parallel to an outer side plate of the frame body, an upper end and a lower end of the partition plate are respectively connected to a top plate and a bottom plate of the frame body, and the partition plate divides the cavity into a first cavity and a second cavity;

a first reinforcing plate is arranged between the outer side plate and the partition plate, and divides the first cavity into a plurality of first sub-cavities; the second reinforcing plate is arranged between the separation plate and the inner side plate of the frame body, and the second reinforcing plate divides the second cavity into a plurality of second sub-cavities.

With reference to the first aspect, in a possible implementation manner, the first cavity is divided into a plurality of first sub-cavities by a plurality of first reinforcing plates along an up-down direction; the second cavity is divided into a plurality of second sub-cavities by the second reinforcing plates along the vertical direction;

the first reinforcing plates and the second reinforcing plates are the same in number, and the second reinforcing plates and the first reinforcing plates are correspondingly connected on the partition plate in a one-to-one mode to form a multi-path force transmission path.

With reference to the first aspect, in one possible implementation manner, at least one of the first reinforcing plates and/or at least one of the second reinforcing plates are arranged obliquely.

With reference to the first aspect, in a possible implementation manner, the first reinforcement plate disposed obliquely is engaged with the second reinforcement plate disposed obliquely, and both of them are inclined upward or downward.

With reference to the first aspect, in a possible implementation manner, each of the first reinforcing plate and the second reinforcing plate has a bent portion, and the two bent portions on the same force transmission path are bent toward the same direction.

With reference to the first aspect, in a possible implementation manner, the bending directions of the bent portions in any two adjacent force transmission paths are opposite.

With reference to the first aspect, in a possible implementation manner, a vertical reinforcing plate parallel to the outer side plate is arranged in the first sub cavity of the top layer.

With reference to the first aspect, in a possible implementation manner, the outer side of the outer side plate is further provided with a connecting portion for connecting a floor.

The utility model provides a battery package side frame, compared with the prior art, beneficial effect lies in: the cavity of the frame body is divided into a first cavity and a second cavity by the partition plate, the reinforcing plates are arranged in the two cavities respectively, the transverse rigidity of the frame body is improved by the partition plate, the cavity is divided into a plurality of sub cavities by the reinforcing plates, the longitudinal strength of the frame body is improved by the reinforcing plates, the impact capacity of the side frame of the battery pack for bearing lateral loads is further improved, and the problem that the side frame is deformed due to collapse caused by lateral impact is solved; through a plurality of sub-cavities, promote the ability of the deformation energy-absorbing of bursting to do benefit to the lightweight of whole car and the structural design of integration.

In a second aspect, the embodiment of the present invention further provides a battery pack, including the battery pack side frame.

In a third aspect, the embodiment of the present invention further provides a vehicle, including the battery pack.

The embodiment of the utility model provides a battery package and vehicle, owing to adopt this kind of battery package side frame that rigidity is stronger, when 64SORB of whole car collide, can promote the side direction impact load that comes from tire and barrier, better resistance to deformation; bump the operating mode at the side post, a plurality of reinforcing plates of battery package side frame can increase the side post and bump the frame and inhale the energy, better protection battery module.

Drawings

Fig. 1 is a schematic diagram (interior view) of a three-dimensional structure of a side frame of a battery pack provided by an embodiment of the present invention;

fig. 2 is a schematic perspective view (external view) of a side frame of a battery pack according to an embodiment of the present invention;

fig. 3 is a schematic front view of a side frame of a battery pack according to an embodiment of the present invention;

FIG. 4 is a sectional view taken along line B-B of FIG. 3;

description of reference numerals:

1. an inner side plate; 2. a top plate; 3. an outer panel; 4. a vertical reinforcing plate; 5. a first reinforcing plate; 6. a base plate; 7. a partition plate; 8. a second reinforcing plate; 9. a connecting portion; 10. gluing a slot; 11. a second sub-cavity; 12. a first sub-cavity.

Detailed Description

In order to make the technical problem, technical solution and beneficial effects to be solved by the present invention more clearly understood, the following description is made in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

It should be noted that, in the description of the present invention, terms indicating orientation or positional relationship such as "up" and "down" appear in correspondence with the upper and lower orientation of the battery pack when used. The terms "inside" and "outside" are used herein to refer to the side of the battery module that is close to the battery module as the inner side plate and the side of the battery module that is far away from the side plate as the outer side plate, respectively.

Referring to fig. 1 to 4, a side frame of a battery pack according to the present invention will now be described. The battery pack side frame comprises a frame body, wherein the frame body is provided with a cavity, the cavity is communicated in the length direction of the frame body, a partition plate 7 is arranged in the frame body, the partition plate 7 is parallel to an outer side plate 3 of the frame body, the upper end and the lower end of the partition plate 7 are respectively connected with a top plate 2 and a bottom plate 6 of the frame body, and the partition plate 7 divides the cavity into a first cavity and a second cavity;

a first reinforcing plate 5 is arranged between the outer side plate 3 and the partition plate 7, and the first reinforcing plate 5 divides the first cavity into a plurality of first sub-cavities 12; a second reinforcing plate 8 is arranged between the partition plate 7 and the inner side plate 1 of the frame body, and the second reinforcing plate 8 divides the second cavity into a plurality of second sub-cavities 11.

The utility model provides a battery package side frame, compared with the prior art, beneficial effect lies in: the cavity of the frame body is divided into a first cavity and a second cavity by the partition plate 7, the reinforcing plates are respectively arranged in the two cavities, the transverse rigidity of the frame body is improved by the partition plate 7, the cavity is divided into a plurality of sub-cavities by the reinforcing plates, the longitudinal strength of the frame body is improved by the reinforcing plates, the impact capacity of the side frame of the battery pack for bearing lateral loads is further improved, and the problem that the side frame is deformed due to collapse caused by lateral impact is solved; through a plurality of sub-cavities, promote the ability of crumpling deformation energy-absorbing to do benefit to the lightweight of whole car and the structural design of integration.

The battery pack adopts the side frame, so that the side impact load from tires and barriers can be improved when 64SORB of the whole vehicle collides, and the deformation can be resisted better; bump the operating mode at the side post, a plurality of reinforcing plates of battery package side frame can increase the side post and bump the frame and inhale the energy, better protection battery module.

In some embodiments, as shown in fig. 1 to 4, the plurality of first reinforcing plates 5 divide the first cavity into a plurality of first sub-cavities 12 in the up-down direction; the second cavity is divided into a plurality of second sub-cavities 11 by the plurality of second reinforcing plates 8 along the up-down direction; the number of the first reinforcing plates 5 is the same as that of the second reinforcing plates 8, and the second reinforcing plates 8 and the first reinforcing plates 5 are correspondingly connected on the partition plate 7 one by one to form a multi-path force transmission path. Through a plurality of biography power routes, when the vehicle side post bumps the operating mode, the impact load is followed a plurality of biography power routes of battery package side frame and is crumpled the guide, and the battery module in the better protection side frame avoids damaging.

Each cavity is divided into a plurality of sub-cavities with different volumes by the reinforcing plates, so that the path for transferring the impact load can be changed, the distribution of the load is distributed, and the attenuation of the impact load is realized.

The battery package side frame is through constructing a plurality of biography power routes, and the transmission of impact load is bumped to the guide side, compares the mode that increases extrusion aluminium alloy and increase the installing support in relying on the threshold roof beam to bump current side, and spare part is few, and weight is lighter, does benefit to integrating and the lightweight design of EV motorcycle type.

As shown in fig. 1 to 4, in some embodiments, at least one first reinforcing plate 5 and/or at least one second reinforcing plate 8 are obliquely arranged. In an example I, three first reinforcing plates 5 are arranged in the first cavity from top to bottom, wherein the middle one of the first reinforcing plates 5 is arranged obliquely upwards; in the second example, three second reinforcing plates 8 are arranged in the second cavity from top to bottom, wherein the middle second reinforcing plate 8 is arranged in an upward inclined manner; in example three, the middle reinforcing plates in the two cavities are both arranged in an upward inclined manner. Through the reinforcing plates arranged in an inclined manner, impact loads are guided to be transferred to different directions when being transferred along the reinforcing plates in different paths, so that the problem of poor attenuation caused by the fact that multiple paths of force transfer paths are parallel and the impact loads are transferred to the same position at the same time is solved; meanwhile, the transmission path and the transmission time of the force within the same distance are increased by the reinforcing plates arranged obliquely, and when the impact load from the impact source reaches the same interface through paths with different lengths (for example, reaches the inner side plate 1 of the frame body), the force received by each point on the inner side plate 1 is different, so that the deformation resistance of the side frame is improved.

In some embodiments, as shown in fig. 1-4, the first reinforcement panel 5 is angled to engage the second reinforcement panel 8, and both are angled up or down. The reinforcing plate of two slopes constitutes a longer biography power route, guarantees the smoothness nature of power transmission, promotes the anti deformation effect of side frame. And the other reinforcing plates are basically arranged in parallel with the top plate to form force transmission paths with different lengths.

As shown in fig. 1 to 4, the first reinforcing plate 5 and the second reinforcing plate 8 each have a bent portion (as shown at a in fig. 4), and the two bent portions on the same force transmission path are bent in the same direction. Through setting up the portion of bending to the reinforcing plate, not only can promote the longitudinal rigidity of reinforcing plate, and when bearing the side load and assault, the reinforcing plate is changeed and is taken place to burst and contract the deformation, increases the deformation energy-absorbing effect, protects the inside battery module of side frame.

Alternatively, the angle of the bent portion is an obtuse angle of 100 ° to 160 °, and may be, for example, 110 °, 125 °, 133 °, 140 °, 155 °, or the like.

Wherein, the bottom plate of framework can set up the portion of bending of such structure, promotes the effect of deformation energy-absorbing.

In order to meet the requirement that the side frame does not invade the whole outer envelope of the battery pack and meanwhile realize lateral collapse guiding deformation, the embodiment is from bottom to top, the bending directions of the adjacent reinforcing plates are opposite, the offset of the forced dislocation of the inner side and the outer side of the side frame can be reduced, and more stable deformation during collapse is realized. Specifically, the bending directions of the bending parts in any two adjacent force transmission paths are opposite. For example, from bottom to top, the first layer of stiffeners bend upward, the second layer of stiffeners bend downward, the middle tilted stiffeners bend upward, and the uppermost stiffener bends downward.

As shown in fig. 1 to 4, in some embodiments, a vertical stiffener 4 is provided in the first sub-cavity 12 of the top layer, parallel to the outer side plate 3. Vertical reinforcing plate 4 plays the effect of further strengthening to the intensity of the subcavity of top layer because, the first subcavity 12 of top layer, roof 2, the outer panel 3 of the framework that corresponds and inside first reinforcing plate 5 need with seat beam articulate, consequently need improve rigidity in order to reduce the deformation of bursting or collapsing, better transmission side direction load.

In some embodiments, as shown in fig. 2 to 4, the outer side of the outer panel 3 is further provided with a connecting portion 9 for connecting the floor. The connecting portion 9 is a strip plate to provide an integrated structure for connecting the battery pack and the peripheral related members.

Optionally, as shown in fig. 4, a glue coating groove 10 is further provided on the top plate 2 of the frame body, for solving the problem of glue coating and sealing of the side frame and the sill beam. The cross section of the glue coating groove is of an arc structure and can also be of a trapezoid structure.

Through the battery package side frame that this embodiment provided, aluminium alloy part and installing support in can cancelling threshold roof beam, high integration can be realized with threshold roof beam to battery package side frame, realizes that the CTC integrates partly of design, is favorable to the lightweight of part and the lightweight of whole car.

Among them, CTC (Cell to tasks) battery technology is a battery car body integration technology, and is also one of the main technical routes of EV cars.

In the above embodiments, the description of each embodiment has its own emphasis, and reference may be made to the related description of other embodiments for parts that are not described or recited in any embodiment.

Based on the same inventive concept, the embodiment of the application also provides a battery pack, which comprises the battery pack side frame.

When the battery pack is installed, the side frame of the battery pack is embedded into the threshold beam and connected through the bolts, so that the high integration of the side frame of the battery pack and the threshold beam is realized, and the CTC integration design is achieved; a glue coating groove 10 is designed on a top plate 2 of a side frame of the battery pack, so that the problem of glue coating and sealing of the side frame and a threshold beam is solved; the connecting part 9 on the side of the side frame is in lap joint with the floor of the box cover, and the design facilitates the integration of the side frame, the battery module (also a battery pack) for bearing and the whole vehicle, so that the integration of the whole vehicle is realized.

The reinforcing plate in the side frame cavity improves to be 160 the board of bending, and adjacent reinforcing plate opposite direction of buckling, not only can promote the sectional area of side frame, improves the longitudinal rigidity of frame roof beam, protects passenger cabin integrality in 64SORB operating mode, plays stable ulcerate guide effect that contracts in bumping the operating mode at the side column moreover, increases the side column and bumps frame energy-absorbing, better protection battery module.

Based on the same inventive concept, the embodiment of the utility model provides a vehicle is still provided, include the battery package.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. The battery pack side frame comprises a frame body, wherein the frame body is provided with a cavity, and the cavity is communicated in the length direction of the frame body, and is characterized in that a partition plate (7) is arranged in the frame body, the partition plate (7) is parallel to an outer side plate (3) of the frame body, the upper end and the lower end of the partition plate (7) are respectively connected with a top plate (2) and a bottom plate (6) of the frame body, and the partition plate (7) divides the cavity into a first cavity and a second cavity;

a first reinforcing plate (5) is arranged between the outer side plate (3) and the partition plate (7), and the first reinforcing plate (5) divides the first cavity into a plurality of first sub-cavities (12); the second reinforcing plate (8) is arranged between the separation plate (7) and the inner side plate (1) of the frame body, and the second reinforcing plate (8) divides the second cavity into a plurality of second sub cavities (11).

2. The battery pack side frame according to claim 1, wherein a plurality of the first reinforcing plates (5) divide the first cavity into a plurality of the first sub-cavities (12) in the up-down direction; the second cavity is divided into a plurality of second sub cavities (11) by a plurality of second reinforcing plates (8) along the up-down direction;

the number of the first reinforcing plates (5) is the same as that of the second reinforcing plates (8), and the second reinforcing plates (8) and the first reinforcing plates (5) are correspondingly connected on the partition plate (7) one by one to form a multi-path force transmission path.

3. The battery pack side frame according to claim 2, wherein at least one of the first reinforcing plates (5) and/or at least one of the second reinforcing plates (8) is obliquely disposed.

4. The battery pack side frame according to claim 3, wherein the first reinforcement plate (5) disposed obliquely is engaged with the second reinforcement plate (8) disposed obliquely, and both are inclined upward or downward.

5. The battery pack side frame according to claim 2, wherein the first reinforcing plate (5) and the second reinforcing plate (8) each have a bent portion, and the two bent portions on the same force transmission path are bent in the same direction.

6. The battery pack side frame of claim 5, wherein the bending directions of the bent portions in any two adjacent force transmission paths are opposite.

7. The battery pack side frame according to claim 1, wherein a vertical stiffener (4) is provided in the first sub-cavity (12) of the top layer parallel to the outer side plate (3).

8. The battery pack side frame according to claim 1, wherein the outer side of the outer side plate (3) is further provided with a connecting portion (9) for connecting a floor.

9. A battery pack comprising the battery pack side frame according to any one of claims 1 to 8.

10. A vehicle characterized by comprising the battery pack according to claim 9.