CN218172002U

CN218172002U - Battery package box bracket additional strengthening

Info

Publication number: CN218172002U
Application number: CN202222333215.8U
Authority: CN
Inventors: 戈志敏; 付细平; 黄文杰; 廖昌江; 卢成斌; 曹锡仪
Original assignee: Jiangxi Ganfeng Lienergy Technology Co Ltd
Current assignee: Jiangxi Ganfeng Lienergy Technology Co Ltd
Priority date: 2022-09-02
Filing date: 2022-09-02
Publication date: 2022-12-30
Anticipated expiration: 2032-09-02

Abstract

The utility model provides a battery pack box bracket reinforcing structure, which comprises a battery box body, a bracket, an inner lining metal plate, a bending reinforcing plate and a bottom beam, wherein the bracket is arranged at both ends of the battery box body, the inner lining metal plate is arranged in the battery box body and at the position corresponding to the bracket, the bending reinforcing plate is arranged at both sides of the bottom end in the battery box body, the bottom beam is arranged at both ends of the inner side of the bending reinforcing plate, and the battery box body, the bracket and the inner lining metal plate are welded by a spot welding process of connecting three parts by single welding; through the improvement of structure, can make the comparatively even each part of transmission to battery box of weight load of battery box inner structure, can effectively reduce the local stress concentration condition of battery box body in load transfer process, the local condition of structure fracture or fracture of being difficult to appear of battery box.

Description

Battery package box bracket additional strengthening

Technical Field

The utility model relates to a lithium ion battery field especially relates to a battery package box bracket additional strengthening.

Background

In order to respond to the call of national emission reduction, the current new energy industry develops rapidly. The application scenes of power battery products are more and more extensive, and the requirements on the mechanical reliability of the power battery products are higher and higher.

The power battery pack is generally connected with a vehicle body through the bracket, the bracket can bear vibration and impact from the vehicle body, the bracket is used as a key connecting piece of the battery pack, and the structural strength of the bracket is critical to the safety of the battery pack and the whole vehicle, so that after a battery pack sample is finished, a vibration impact test can be carried out on a vibration table, and the bracket is connected with a vibration tool through bolts to transfer load, so that the structural strength of the bracket connection is inspected.

Through the retrieval, the battery module fixing device disclosed in publication number CN205985131U can achieve the purposes of protecting the single battery and improving the impact resistance of the battery box, but cannot enable the weight load of the internal structure of the battery pack to be transmitted to each part inside the battery pack box body more uniformly, cannot effectively reduce the local stress concentration condition of the battery pack box body in the load transmission process, and the local part of the battery pack box body is easy to crack or break.

Therefore, we propose a battery pack case bracket reinforcing structure to solve the above problems.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art and providing a battery pack box bracket reinforcing structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a battery package box bracket additional strengthening, includes battery box, bracket, inside lining panel beating, the reinforcing plate and the floorbar of bending, the bracket is all installed at the both ends of battery box, the inside of battery box with the inside lining panel beating is all installed to the corresponding position of bracket, the reinforcing plate of bending is all installed to the inside bottom both sides of battery box, the floorbar is all installed at the inboard both ends of the reinforcing plate of bending.

Further preferably, the battery box body and the bracket and the lining metal plate are welded through a spot welding process for connecting three parts through single welding.

Further preferably, the battery box body and the bending reinforcing plates are welded independently, and the bending reinforcing plates are symmetrically arranged.

Preferably, the bending reinforcing plates are connected with the bottom beam, and the bending reinforcing plates are fixedly connected with the bottom beam through laser welding or bolts or expansion buckles.

Further preferably, the lining metal plate is provided with a reinforcing rib shaped like a Chinese character 'ji', weight reducing holes are formed in two sides of the reinforcing rib, and the distances among the weight reducing holes are consistent.

Further preferred, the both ends of inside lining panel beating all are equipped with the attaching plate, the attaching plate all closely laminates with the battery box inner wall.

Preferably, the bending reinforcing plates comprise fixing plates, transition plates and bottom beam connecting plates, and the bottom beam connecting plates are fixedly connected with the bottom beams.

Further preferably, the bending reinforcing plate is formed by injection molding or punch forming, the transition plate is arranged in an inclined mode, and an included angle formed between the transition plate and the fixed plate and between the transition plate and the bottom beam connecting plate is 45 degrees.

Compared with the prior art, the beneficial effects of the utility model are that:

through the improvement of structure, can make the comparatively even each part of transmission to battery box of the weight load of battery box inner structure, can effectively reduce the local stress concentration condition of battery box body in load transfer process, the local condition of structure fracture or fracture is difficult to appear in the battery box.

Drawings

FIG. 1 is a schematic view of the overall structure of a battery case;

FIG. 2 is a schematic view of a connection structure between the battery case and the bracket in FIG. 1;

FIG. 3 is a schematic structural view of the lining sheet metal in FIG. 1;

fig. 4 is a schematic structural view of the bending reinforcing plate in fig. 1.

In the figure: 1. a battery case; 2. a bracket; 3. lining metal plates; 4. bending the reinforcing plate; 5. a bottom beam; 6. lightening holes; 7. reinforcing ribs; 8. attaching a plate; 9. a fixing plate; 10. a transition plate; 11. the floorbar connecting plate.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

Referring to fig. 1-4, a battery pack box bracket reinforcing structure comprises a battery box body 1, brackets 2, lining metal plates 3, bent reinforcing plates 4 and bottom beams 5, wherein the brackets 2 are mounted at two ends of the battery box body 1, the lining metal plates 3 are mounted in the battery box body 1 at positions corresponding to the brackets 2, the bent reinforcing plates 4 are mounted at two sides of the bottom end in the battery box body 1, and the bottom beams 5 are mounted at two ends of the inner side of each bent reinforcing plate 4;

the battery box body 1 is a sheet metal part, the thickness of the battery box body 1 is 1mm-1.5mm, the battery box body 1 can be light and convenient and can reach the strength required by use through the manufacturing method and the manufacturing process, one side of the bracket 2 is rigidly connected with the side body of an external battery automobile, the bracket 2 is made of aluminum alloy, and the aluminum alloy has the physical properties of light weight and high strength.

The battery box body 1, the bracket 2 and the lining metal plate 3 are welded through a spot welding process for connecting three parts through single welding, so that the acting force applied to the bracket 2 can be effectively transmitted to the lining metal plate 3, the lining metal plate 3 and the bracket 2 can simultaneously deal with the acting force conducted from the outside, and the excessive acting force applied to the local part of the bracket 2 can be effectively avoided;

battery box 1 welds with 4 independent welding of reinforcing plates of bending, the reinforcing plates 4 of bending all set up for the symmetry each other, and through the inside lining panel beating 3 that sets up in battery box 1 and the combination additional strengthening of reinforcing plates 4 of bending, can effectively reduce the stress level of battery box 1 in the load transmission process, reduced the fracture risk of destruction of battery box 1 under operating modes such as vibration impact. And the rigidity of the whole structure of the surface of the bracket 2 can be effectively improved, the mechanical properties such as extrusion resistance and the like can be improved, the appearance characteristics of the existing product do not need to be changed, and the whole weight is increased and the space utilization rate is high.

The bending reinforcing plates 4 are connected with the bottom beam 5, and the bending reinforcing plates 4 are fixedly connected with the bottom beam 5 through laser welding or bolts or expansion buckles, so that the bending reinforcing plates 4 can be conveniently and fixedly connected with the bottom beam 5, and meanwhile, the bending reinforcing plates 4 and the bottom beam 5 can resist acting force together;

the weight load of the internal structure of the battery box body 1 can be uniformly transmitted to each part in the battery box body 1, the local stress concentration condition of the body of the battery box body 1 in the load transmission process can be effectively reduced, and the local part of the battery box body 1 is not easy to crack or break.

Be equipped with nearly style of calligraphy strengthening rib 7 on the inside lining panel beating 3, 7 both sides of strengthening rib all are equipped with lightening hole 6, interval between the lightening hole 6 is all unanimous, and 3 fretworks of inside lining panel beating subtract heavy designs and possess nearly style of calligraphy strengthening rib 7 models, unlikely too much weight gain and strengthening rib 7 bit increase when guaranteeing self structural strength, and structural applicability is strong.

Both ends of inside lining panel beating 3 all are equipped with binding plate 8, binding plate 8 all closely laminates with 1 inner wall of battery box, and binding plate 8 all is connected through laser welding's mode with battery box 1 to enable inside lining panel beating 3 and 1 zonulae occludens of battery box, the intensity of promotion inside lining panel beating 3 that can step forward.

The bending reinforcing plates 4 respectively comprise a fixing plate 9, a transition plate 10 and a bottom beam connecting plate 11, the bottom beam connecting plate 11 is fixedly connected with the bottom beam 5, the bending reinforcing plates 4 are formed by injection molding or punch forming, the transition plates 10 are obliquely arranged, and an included angle between each transition plate 10 and the fixing plate 9 and the bottom beam connecting plate 11 is 45 degrees;

through this kind set up fixed plate 9 for the reinforcing plate 4 and the inboard laminating region of battery box 1 of bending, for effectively reducing battery box 1 lateral wall stress concentration, highly the design with fixed plate 9 is longer, cross cab apron 10 for the reinforcing plate 4 transition region of bending, this transition region and the cooperation of 5 tip designs of floorbar, for avoiding bending reinforcing plate 4 and produce great stress at the transmission load in-process, it is 45 to cross the cab apron 10 corner, floorbar connecting plate 11 is for bending reinforcing plate 4 and battery box 1 bottom and the floorbar 5 contact area, floorbar connecting plate 11 plays the effect of the 4 bottoms of the reinforcing plate of monolithic stationary bending, can promote the stability performance of the reinforcing plate 4 of bending.

Claims

1. The utility model provides a battery package box bracket additional strengthening, includes battery box (1), bracket (2), inside lining panel beating (3), bend reinforcing plate (4) and floorbar (5), its characterized in that, bracket (2) are all installed at the both ends of battery box (1), the inside of battery box (1) with inside lining panel beating (3) are all installed to bracket (2) corresponding position, reinforcing plate (4) of bending are all installed to battery box (1) inside bottom both sides, floorbar (5) are all installed at the inboard both ends of reinforcing plate (4) of bending.

2. The battery pack case bracket reinforcing structure according to claim 1, wherein the battery case (1) and the bracket (2) and the lining metal plate (3) are all welded by a spot welding process of connecting three components by a single welding.

3. The battery pack case bracket reinforcing structure according to claim 1, wherein the battery case (1) is welded separately with bent reinforcing plates (4), and the bent reinforcing plates (4) are arranged symmetrically with each other.

4. The battery pack box bracket reinforcing structure according to claim 1, wherein the bent reinforcing plates (4) are connected with the bottom beam (5), and the bent reinforcing plates (4) are fixedly connected with the bottom beam (5) through laser welding or bolts or expansion buckles.

5. The battery pack box bracket reinforcing structure according to claim 1, wherein the lining metal plate (3) is provided with a reinforcing rib (7) shaped like a Chinese character 'ji', both sides of the reinforcing rib (7) are provided with lightening holes (6), and the distances between the lightening holes (6) are consistent.

6. The battery pack box bracket reinforcing structure according to claim 1, wherein two ends of the lining metal plate (3) are provided with attaching plates (8), and the attaching plates (8) are closely attached to the inner wall of the battery box (1).

7. The battery pack box bracket reinforcing structure according to claim 1, wherein the bent reinforcing plates (4) each comprise a fixing plate (9), a transition plate (10) and a bottom beam connecting plate (11), and the bottom beam connecting plate (11) is fixedly connected with the bottom beam (5).

8. The battery pack box bracket reinforcing structure according to claim 7, wherein the bending reinforcing plate (4) is formed by injection molding or punch forming, the transition plate (10) is arranged obliquely, and an included angle between the transition plate (10) and the fixing plate (9) and the bottom beam connecting plate (11) is 45 °.