阅读说明：本技术 一种新能源汽车轻量化铝合金电池支架的制造方法 (Manufacturing method of lightweight aluminum alloy battery bracket of new energy automobile ) 是由 杨庆 周定武 林崟 刘骞 刘华柏 朱先明 王哲 于 2021-08-19 设计创作，主要内容包括：本发明涉及焊接领域,具体涉及一种新能源汽车轻量化铝合金电池支架的制造方法,包括如下步骤：基于轻量化铝合金电池支架的设计图纸实现铝合金电池支架三维模型和蒙皮三维模型的重构；基于电池支架三维模型和蒙皮三维模型得到对应的铝合金电池支架三维模具参数、蒙皮三维模具参数；基于铝合金电池支架三维模具参数、蒙皮三维模具参数实现铝合金电池支架模具、蒙皮三维模具的制作；实现铝合金电池支架、蒙皮的制作,其中,相对接的铝合金电池支架与蒙皮之间配置相适配的卡接结构；实现实现铝合金电池支架与蒙皮的装配固定,并沿着铝合金电池支架组件的接缝焊接。本发明尽可能的避免了蒙皮变形的情况,且可以显著提升焊缝的强度,降低返修率。(The invention relates to the field of welding, in particular to a manufacturing method of a light aluminum alloy battery bracket of a new energy automobile, which comprises the following steps: the method comprises the following steps of (1) realizing reconstruction of a three-dimensional model and a three-dimensional model of a skin of the aluminum alloy battery bracket based on a design drawing of a lightweight aluminum alloy battery bracket; obtaining corresponding three-dimensional die parameters of the aluminum alloy battery bracket and corresponding three-dimensional die parameters of the skin based on the three-dimensional model of the battery bracket and the three-dimensional model of the skin; manufacturing an aluminum alloy battery bracket mould and a skin three-dimensional mould based on the aluminum alloy battery bracket three-dimensional mould parameters and the skin three-dimensional mould parameters; manufacturing an aluminum alloy battery bracket and a skin, wherein a matched clamping structure is arranged between the aluminum alloy battery bracket and the skin which are butted; the aluminum alloy battery bracket and the skin are assembled and fixed, and the aluminum alloy battery bracket and the skin are welded along the seam of the aluminum alloy battery bracket. The method avoids the deformation of the skin as much as possible, can obviously improve the strength of the welding line and reduce the repair rate.)

1. A manufacturing method of a light aluminum alloy battery bracket of a new energy automobile is characterized by comprising the following steps:

s1, reconstructing a three-dimensional model of the aluminum alloy battery bracket and a three-dimensional model of a skin based on a design drawing of the lightweight aluminum alloy battery bracket;

s2, obtaining corresponding three-dimensional die parameters of the aluminum alloy battery support and corresponding three-dimensional die parameters of the skin based on the three-dimensional model of the battery support and the three-dimensional model of the skin;

s3, manufacturing an aluminum alloy battery bracket mould and a skin three-dimensional mould based on the aluminum alloy battery bracket three-dimensional mould parameters and the skin three-dimensional mould parameters;

s4, manufacturing the aluminum alloy battery bracket and the skin based on the aluminum alloy battery bracket mould and the skin three-dimensional mould respectively, wherein a matched clamping structure is configured between the butted aluminum alloy battery bracket and the skin;

s5, the aluminum alloy battery bracket and the skin are assembled and fixed through the clamping structure, and all seams are filled and leveled in a solid welding wire overlaying mode along the seams of the aluminum alloy battery bracket component; wherein the filling surface is slightly higher than the original plane.

2. The manufacturing method of the new energy automobile lightweight aluminum alloy battery bracket as claimed in claim 1, wherein in step S1, a design drawing of the lightweight aluminum alloy battery bracket is first read to realize the splitting of the original aluminum alloy battery bracket three-dimensional model and the original skin three-dimensional model, and then a corresponding clamping structure is assembled at a position where the original aluminum alloy battery bracket three-dimensional model and the original skin three-dimensional model are butted to obtain the aluminum alloy battery bracket three-dimensional model and the skin three-dimensional model.

3. The manufacturing method of the new energy automobile lightweight aluminum alloy battery bracket as claimed in claim 1, wherein the clamping structure comprises clamping grooves and clamping blocks, the clamping grooves are arranged on the skin three-dimensional model, and the clamping blocks are arranged on the aluminum alloy battery bracket model.

4. The manufacturing method of the new energy automobile lightweight aluminum alloy battery holder as claimed in claim 1, wherein in step S2, firstly, the dimensional parameters of the battery holder three-dimensional model and the skin three-dimensional model are read, and then the calculation of the battery holder three-dimensional mold parameters and the skin three-dimensional mold parameters is realized based on a preset algorithm.

5. The manufacturing method of the new energy automobile lightweight aluminum alloy battery bracket as claimed in claim 1, wherein in step S5, the aluminum alloy battery bracket and the skin are assembled through the clamping structure, and the aluminum alloy battery bracket and the skin are fixed based on electric welding.

6. The manufacturing method of the new energy automobile lightweight aluminum alloy battery bracket as defined in claim 1, wherein the clamping grooves and the clamping blocks are both in a trapezoidal shape.

Technical Field

The invention relates to the field of welding, in particular to a manufacturing method of a light aluminum alloy battery bracket of a new energy automobile.

Background

With the rapid development of the electric vehicle technology, the power battery develops to a bottleneck stage, and the endurance mileage of the vehicle is difficult to increase greatly through breakthrough technical innovation, so that many manufacturers begin to pay attention to the research direction of vehicle body light weight. In order to keep a lower gravity center of a vehicle body, the power battery is often arranged in the middle of the bottom of the vehicle, and the battery bracket is used as a structure for bearing the power battery, so that the safety of the new energy vehicle is very important. At present, the battery support that has now generally adopted sets up one set of fossil fragments respectively in the inside and outside both sides of covering, and the fossil fragments in the outside are used for protecting the battery, and inboard fossil fragments are used for carrying out the structural design that supports to the battery, and along with the continuous pursuit to the lightweight, a lot of manufacturers begin to use the lighter aluminum alloy of quality under the equal intensity as battery support's raw and other materials, but at the in-process of aluminum alloy assembly welding and assembly welding, the skin warp easily appears, the welding seam quality is poor, the higher problem of repair rate.

Disclosure of Invention

In order to solve the problems, the invention provides a manufacturing method of a light aluminum alloy battery bracket of a new energy automobile, which avoids the deformation of a skin as much as possible, can obviously improve the strength of a welding line and reduce the repair rate.

In order to achieve the purpose, the invention adopts the technical scheme that:

a manufacturing method of a light aluminum alloy battery bracket of a new energy automobile comprises the following steps:

s1, reconstructing a three-dimensional model of the aluminum alloy battery bracket and a three-dimensional model of a skin based on a design drawing of the lightweight aluminum alloy battery bracket;

s2, obtaining corresponding three-dimensional die parameters of the aluminum alloy battery support and corresponding three-dimensional die parameters of the skin based on the three-dimensional model of the battery support and the three-dimensional model of the skin;

s3, manufacturing an aluminum alloy battery bracket mould and a skin three-dimensional mould based on the aluminum alloy battery bracket three-dimensional mould parameters and the skin three-dimensional mould parameters;

s4, manufacturing the aluminum alloy battery bracket and the skin based on the aluminum alloy battery bracket mould and the skin three-dimensional mould respectively, wherein a matched clamping structure is configured between the butted aluminum alloy battery bracket and the skin;

s5, the aluminum alloy battery bracket and the skin are assembled and fixed through the clamping structure, and all seams are filled and leveled in a solid welding wire overlaying mode along the seams of the aluminum alloy battery bracket component; wherein the filling surface is slightly higher than the original plane.

Further, in step S1, reading a design drawing of the lightweight aluminum alloy battery holder to split the original aluminum alloy battery holder three-dimensional model and the original skin three-dimensional model, and then assembling corresponding clamping structures at the positions where the original aluminum alloy battery holder three-dimensional model and the original skin three-dimensional model are butted to obtain the aluminum alloy battery holder three-dimensional model and the skin three-dimensional model.

Further, the clamping structure comprises a clamping groove and a clamping block, the clamping groove is arranged on the skin three-dimensional model, and the clamping block is arranged on the aluminum alloy battery bracket model.

Further, in step S2, firstly, the size parameters of the three-dimensional battery holder model and the three-dimensional skin model are read, and then the calculation of the three-dimensional battery holder model parameters and the three-dimensional skin model parameters is realized based on a preset algorithm.

Further, in the step S5, the aluminum alloy battery bracket and the skin are assembled by the clamping structure, and the aluminum alloy battery bracket and the skin are fixed based on electric welding.

Furthermore, the clamping groove and the clamping block are both in a ladder platform shape.

The method breaks through the traditional welding method of the aluminum alloy battery bracket and the skin, is simple to operate, avoids the deformation of the skin as much as possible, can obviously improve the strength of the welding line, and reduces the repair rate.

Detailed Description

The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that variations and modifications can be made by persons skilled in the art without departing from the spirit of the invention. All falling within the scope of the present invention.

Example 1

A manufacturing method of a light aluminum alloy battery bracket of a new energy automobile comprises the following steps:

s1, reconstructing a three-dimensional model of the aluminum alloy battery bracket and a three-dimensional model of a skin based on a design drawing of the lightweight aluminum alloy battery bracket;

s2, obtaining corresponding three-dimensional die parameters of the aluminum alloy battery support and corresponding three-dimensional die parameters of the skin based on the three-dimensional model of the battery support and the three-dimensional model of the skin;

s3, manufacturing an aluminum alloy battery bracket mould and a skin three-dimensional mould based on the aluminum alloy battery bracket three-dimensional mould parameters and the skin three-dimensional mould parameters;

s4, manufacturing the aluminum alloy battery bracket and the skin based on the aluminum alloy battery bracket mould and the skin three-dimensional mould respectively, wherein a matched clamping structure is configured between the butted aluminum alloy battery bracket and the skin;

s5, assembling the aluminum alloy battery bracket and the skin through the clamping structure, fixing the aluminum alloy battery bracket and the skin based on electric welding, and filling all seams along the seams of the aluminum alloy battery bracket component in a solid welding wire overlaying mode; wherein the filling surface is slightly higher than the original plane.

In this embodiment, in step S1, first, a design drawing of the lightweight aluminum alloy battery holder is read to split the original aluminum alloy battery holder three-dimensional model and the original skin three-dimensional model, and then a corresponding clamping structure is assembled at a position where the original aluminum alloy battery holder three-dimensional model and the original skin three-dimensional model are butted to obtain the aluminum alloy battery holder three-dimensional model and the skin three-dimensional model.

In this embodiment, the joint structure includes draw-in groove and fixture block, and draw-in groove and fixture block all adopt the terraced platform type, and the draw-in groove is arranged on covering three-dimensional model, and the fixture block is arranged on aluminum alloy battery support model.

In this embodiment, in step S2, firstly, the size parameters of the three-dimensional battery holder model and the three-dimensional skin model are read, and then the calculation of the three-dimensional battery holder model parameters and the three-dimensional skin model parameters is performed based on a preset algorithm.

Tests prove that the manufacturing method can well avoid the deformation of the skin and can obviously improve the strength of the welding line.

The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.