CN-122025984-A - Steel end plate for fixing battery module

Abstract

The invention relates to the technical field of battery end plate devices, in particular to a steel end plate for fixing a battery module, which comprises a steel end plate body, wherein the steel end plate body is manufactured by adopting a rolling and stamping composite forming process, the steel end plate body comprises an end plate I and an end plate II which are formed by the same components, and the end plate I and the end plate II are respectively and leftwards symmetrically arranged along the length direction of the battery module.

Inventors

• SUN JIAN
• LIU HUAN

Assignees

• 安徽文轩新能源热管理系统有限公司

Dates

Publication Date

20260512

Application Date

20260318

Claims (7)

1. 1. The steel end plate for fixing the battery module comprises a steel end plate body (1), and is characterized in that the steel end plate body (1) is manufactured by adopting a rolling and stamping composite forming process, the steel end plate body (1) comprises a first end plate (11) and a second end plate (12) which are formed by the same components, the first end plate (11) and the second end plate (12) are respectively symmetrically arranged left and right along the length direction of the battery module, a connecting piece (2) is arranged between the first end plate (11) and the second end plate (12), and the end part of the first end plate (11) and the corresponding end part of the second end plate (12) are respectively in sliding sleeve joint with the inside of the connecting piece (2); The first end plate (11) is formed by splicing a plurality of transverse steel profiles (121) and a plurality of vertical connecting profiles (122), the transverse steel profiles (121) are arranged in parallel at intervals up and down along the vertical direction, the vertical connecting profiles (122) are arranged between the adjacent transverse steel profiles (121) at intervals, and two ends of the vertical connecting profiles (122) are respectively welded and fixed with the corresponding transverse steel profiles (121) to form the first frame end plate (11).
2. 2. The steel end plate for fixing the battery module according to claim 1, wherein the first end plate (11) and the second end plate (12) can slide along the connecting piece (2) in opposite directions or opposite directions so as to adjust the overall length of the battery steel end plate body (1) to meet the installation requirements of battery modules with different specifications.
3. 3. A steel end plate for fixing a battery module according to claim 1, wherein the steel section (121) and the connecting section (122) are integrally rolled into a 90-degree closed-loop U-shaped folded edge (111), the height of the folded edge is 15-25 mm, and the U-shaped folded edge (111) is also adopted at the joint of the inner side of the folded edge and the section to form a closed-loop rigid frame.
4. 4. A steel end plate for battery module fixation according to claim 1, characterized in that the steel profile (121) and the connecting profile (122) are made of high-strength cold-rolled dual-phase steel strip.
5. 5. The steel end plate for battery module fixation according to claim 1, wherein the transverse steel profile (121) is a hollow profile structure, and a plurality of inclined reinforcing ribs (4) are uniformly arranged in the longitudinal direction; Adjacent two reinforcing ribs (4) are mutually connected in an inclined and crossed mode, and an inverted triangle supporting unit is formed at the joint.
6. 6. The steel end plate for battery module fixation according to claim 5, wherein the plurality of inverted triangle support units are sequentially and continuously arranged along the length direction of the steel section bar (121), so that the reinforcing ribs (4) integrally form a wavy support structure inside the steel section bar (121); The connection parts between the adjacent reinforcing ribs (4) are all in arc transition (41) so as to eliminate stress concentration.
7. 7. A steel end plate for battery module fixation according to claim 3, wherein the surface of the middle steel section bar (121) is provided with a lifting hole (3).

Description

Steel end plate for fixing battery module Technical Field The invention relates to the technical field of battery end plate devices, in particular to a steel end plate for fixing a battery module. Background The steel end plates used for fixing the battery modules are high-strength bearing parts which are arranged on two sides of the battery modules, are used for clamping and fixing the battery cells, bear the expansion force of the battery cells and ensure the stability of the structure of the battery modules, and can protect the battery modules inside the battery modules. The existing steel end plate is formed by adopting a common stamping or die-casting process, the inside of the die-casting end plate is easy to have the defects of air holes, looseness and the like, the mechanical property is poor, crystal grains of the common stamping end plate are not fibrous and reinforced, the structural strength, the bending rigidity and the fatigue resistance are insufficient, the reliability requirement of long-term recycling of the battery module is difficult to meet, and meanwhile, the traditional process has large die investment and high product weight, and the production cost of the steel end plate is improved. Disclosure of Invention Aiming at the defects of the prior art, the invention provides the steel end plate for fixing the battery module, which solves the technical problems that the prior art adopts a common stamping or die casting process to form, has insufficient structural strength, bending rigidity and fatigue resistance, and is difficult to meet the reliability requirement of long-term recycling of the battery module, and achieves the purposes of having higher structural strength, bending rigidity and fatigue resistance and meeting the reliability requirement of long-term use of the battery module. The steel end plate body is manufactured by adopting a rolling and stamping composite forming process, the steel end plate body comprises a first end plate and a second end plate which are formed by the same components, the first end plate and the second end plate are respectively and symmetrically arranged along the length direction of the battery module, a connecting piece is arranged between the first end plate and the second end plate, and the end part of the first end plate and the corresponding end part of the second end plate are both in sliding sleeve joint with the inside of the connecting piece; The first end plate is formed by splicing a plurality of transverse steel profiles and a plurality of vertical connecting profiles, the transverse steel profiles are arranged in parallel at intervals along the vertical direction, the vertical connecting profiles are arranged between the adjacent transverse steel profiles at intervals, and two ends of the vertical connecting profiles are welded and fixed with the corresponding transverse steel profiles respectively to form the first frame-type end plate. Preferably, the first end plate and the second end plate can slide along the connecting piece in opposite directions or in opposite directions so as to adjust the whole length of the battery steel end plate body and adapt to the installation requirements of battery modules with different specifications. Preferably, the steel profile and the connecting profile are integrally rolled into a 90-degree closed-loop U-shaped folded edge, the height of the folded edge is 15-25 mm, and the joint between the inner side of the folded edge and the profile is also a U-shaped folded edge, so that a closed-loop rigid frame is formed. Preferably, the steel profile and the connecting profile are made of high-strength cold-rolled dual-phase steel strips. Preferably, the transverse steel section is a hollow section structure, a plurality of inclined reinforcing ribs are uniformly arranged in the transverse steel section along the length direction, two adjacent reinforcing ribs are mutually inclined and cross-connected, and an inverted triangle supporting unit is formed at the joint. Preferably, the inverted triangle support units are sequentially and continuously arranged along the length direction of the steel section, so that the reinforcing ribs integrally form a wavy support structure inside the steel section, and the connection parts between the adjacent reinforcing ribs all adopt arc transition to eliminate stress concentration. Preferably, the surface of the middle steel section is provided with a lifting hole. By means of the technical scheme, the invention provides the steel end plate for fixing the battery module, which has at least the following beneficial effects: 1. The invention adopts the high-strength cold-rolled dual-phase steel and the rolling and stamping composite forming process to lead the steel grains to be fibrillated, obviously improves the mechanical property, reduces the die cost, reduces the product weight and the product cost compared with the traditional die casting and common stamping end pl