CN220217213U - Aluminum shell thin wall welding device - Google Patents

Abstract

The utility model provides an aluminum shell thin-wall welding device which comprises a welding jig and a vortex tube, wherein an air passage is arranged in the welding jig, and welding press blocks and air inlets are respectively arranged on two sides of the welding jig; the air passage extends from the air inlet to the welding pressing block and is communicated with the air outlet, and the air outlet is arranged at two ends of the welding jig; the vortex tube delivers cool air to the air inlet. Cold air generated by the vortex tube enters the welding jig through the air inlet, and the welding jig is cooled, so that the heat absorption amount of the aluminum shell in the welding process can be reduced.

Description

Aluminium shell thin wall welding set

Technical Field

The utility model relates to the field of welding, in particular to an aluminum shell thin-wall welding device.

Background

At present, the shell of the square battery is usually made of aluminum alloy, and the aluminum alloy material has large linear expansion coefficient and high solidification shrinkage rate. A large amount of heat is generated in the laser welding process, local heat in a fusion area between a cover plate of the battery and a thin shell is gathered, so that plastic extrusion is generated in the fusion area and a near-welding area, plastic strain is generated in the cooling process after welding, the aluminum shell is deformed to further cause large-area concave-convex deformation of the battery, and the deformation of the shell with larger size and thinner wall thickness is more obvious. At present, cooling gas is usually conveyed to a welding joint area to reduce the heat absorbed by the aluminum alloy, but the cooling gas usually causes insufficient welding heat at the welding joint, so that the welding effect is affected.

There is therefore a need for a new type of aluminum shell thin wall welding device to solve the above problems.

Disclosure of Invention

The utility model aims to provide an aluminum shell thin-wall welding device which can cool a welding jig to reduce heat absorbed by an aluminum shell in a welding process.

The application provides an aluminum shell thin-wall welding device, which comprises a welding jig and a vortex tube, wherein an air passage is arranged in the welding jig, and welding press blocks and air inlets are respectively arranged on two sides of the welding jig; the air passage extends from the air inlet to the welding pressing block and is communicated with the air outlet, and the air outlet is arranged at two ends of the welding jig; the vortex tube delivers cool air to the air inlet.

Further, the air passage includes a first gas passage and a second gas passage, the first gas passage extending from the air inlet in a first direction and communicating with the second gas passage.

Further, the second gas passage extends in a second direction perpendicular to the first direction, and the second gas passage communicates with the gas outlet.

Further, the second gas channel is arranged adjacent to the welding press block, and penetrates through two ends of the welding jig.

Further, the middle part of welding jig is equipped with first locating frame and second locating frame, first locating frame with the second locating frame sets up along first direction, the size of first locating frame is greater than the second locating frame.

Further, the first gas channel comprises a first branch and a second branch which are arranged at two sides of the first positioning frame and the second positioning frame.

Further, the welding jig comprises a welding base and a welding clamping piece which are oppositely arranged, and the side walls of the welding clamping piece and the welding base are respectively provided with the air passage.

Further, a welding clamping part is formed in the middle of the welding pressing block, and the thickness of the welding pressing block is gradually thinned.

Further, a control valve and a cold air output end communicated with the air inlet are arranged on the vortex tube, and the control valve regulates the gas flow and the gas temperature of the cold air output end.

Further, the cold air output end is provided with a three-way pipe, the three-way pipe is respectively connected with the control valve and the two air delivery pipes, and the two air delivery pipes are respectively communicated with the first branch and the second branch.

The aluminum shell thin-wall welding device provided by the utility model is provided with the air passage and the air inlet, the air passage extends from the air inlet in the welding pressing block, and cold air generated by the vortex tube is injected into the welding jig through the air inlet and then escapes through the air outlets at two ends of the welding jig. The device can cool the welding jig by cold air so as to reduce the heat input quantity to the aluminum shell in the welding process.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the specification and together with the description, serve to explain the principles of the specification.

Fig. 1 is a top view of the aluminum shell thin-wall welding device of the utility model.

Fig. 2 is a side view of an aluminum shell thin wall welding device.

Fig. 3 is a perspective view of the welding jig of fig. 1.

Fig. 4 is a top view of the welding jig.

Fig. 5 is a top view of the vortex tube of fig. 1.

Reference numerals illustrate: 10. welding jig; 11. an airway; 12. welding a pressing block; 13. an air inlet; 131. a first air inlet; 132. a second air inlet; 14. an air outlet; 141. a first air outlet; 142. a second air outlet; 15. a first gas passage; 151. a first branch; 152. a second branch; 16. a second gas passage; 17. a first positioning frame; 18. a second positioning frame; 19. a mounting hole; 20. a vortex tube; 21. a control valve; 22. an input end; 23. a cool air output end; 24. a three-way pipe; 25. a gas pipe; 26. a first gas pipe; 27. a second gas pipe; 28. a shunt; 30. welding a base; 40. welding the clamping piece.

Detailed Description

Reference will now be made in detail to exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present disclosure. Rather, they are merely examples of apparatus consistent with some aspects of the disclosure as detailed in the accompanying claims.

The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the present disclosure. Unless defined otherwise, technical or scientific terms used in this disclosure should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The terms "first," "second," and the like in the description and in the claims, are not used for any order, quantity, or importance, but are used for distinguishing between different elements. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. "plurality" or "plurality" means two or more. The word "comprising" or "comprises", and the like, means that elements or items appearing before "comprising" or "comprising" are encompassed by the element or item recited after "comprising" or "comprising" and equivalents thereof, and that other elements or items are not excluded. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any or all possible combinations of one or more of the associated listed items. The cooperation in this application includes, but is not limited to, the mounting or dismounting relationship between elements or structures and the mounting or dismounting process.

Referring to fig. 1 to 4, the application provides an aluminum shell thin-wall welding device, which comprises a welding jig 10 and a vortex tube 20, wherein the vortex tube 20 conveys cold air into the welding jig 10.

The welding jig 10 is of a convex structure, an air passage 11 is formed in the welding jig 10, welding press blocks 12 and air inlets 13 are respectively formed in two sides of the welding jig 10, and air outlets 14 are formed in the left end and the right end of the welding jig 10. The welding briquetting 12 is located one side of welding jig 10, and welding clamping part 121 is formed at the middle part of welding briquetting 12, and during the welding, the shell of welding clamping part 121 centre gripping battery is in order to avoid laser head and welding briquetting 12 contact, and the thickness of welding briquetting 12 diminishes gradually.

In this embodiment, the welding press 12 and the welding jig 10 are integrally formed. In another embodiment, the welding press 12 is bolted to the welding jig 10.

Referring to fig. 3 and 4, the air inlet 13 is disposed on the other side of the welding jig 10, and the air inlet 13 includes a first air inlet 131 and a second air inlet 132. The air outlets 14 are disposed at two ends of the welding fixture 10, and include a first air outlet 141 and a second air outlet 142.

The air passage 11 extends from the air inlet 13 toward the welding press 12 and communicates with the air outlet 14. Specifically, the gas passage 11 includes a first gas passage 15 and a second gas passage 16. The first gas passage 15 extends in the first direction from the gas inlet 13 within the welding jig 10 and communicates with the second gas passage 16. In the present embodiment, the first gas channel 15 extends in a longitudinal direction in a straight line in the welding jig, so that cold gas can be rapidly input into the second gas channel 16. In another embodiment, the first gas passage 15 may extend helically to the second gas passage 16.

The second gas channel 16 is disposed adjacent to the welding press 12, and the second gas channel 16 extends along a second direction perpendicular to the first direction and penetrates through two ends of the welding jig 10, that is, the second gas channel 16 communicates with the first gas outlet 141 and the second gas outlet 142 at two ends of the welding jig 10. In this embodiment, the second direction is a horizontal direction, that is, the second gas channel 16 extends transversely in the welding jig 10.

The gas enters the second gas channel 16 and is discharged through the first gas outlet 141 and the second gas outlet 142 after being heated and expanded, and the vortex tube 20 continuously generates cold gas to be led to the second gas channel 16, so that the cold gas is cooled to the welding press block 12 all the time in the welding process, and the heat input quantity to the aluminum shell is reduced.

The middle part of welding jig 10 is equipped with first locating frame 17 and second locating frame 18, and first locating frame 17 and second locating frame 18 set up along first direction, and the size of first locating frame 17 is greater than second locating frame 18. Specifically, the first positioning frame 17 and the second positioning frame 18 are each rectangular. In other embodiments, the first positioning frame 17 and the second positioning frame 18 may be two squares of different sizes. The first positioning frame 17 and the second positioning frame 18 are used for positioning the battery, so that welding efficiency is guaranteed.

The first gas channel 15 includes a first branch 151 and a second branch 152 respectively disposed on two sides of the first positioning frame 17 and the second positioning frame 18, the first branch 151 is communicated with the first gas inlet 131, and the second branch 152 is communicated with the second gas inlet 132. The second gas channel 16 is arranged above the first positioning frame 17 and close to the welding press 12. The arrangement can lead the cold air to the second air channel 16 through two branches, and can lead the cold air generated by the vortex tube 20 into the welding jig 10 quickly and cool the welding press block 12. Meanwhile, other areas of the welding jig 10 can be cooled, and the cooling effect can be improved.

The welding jig 10 is further provided with a mounting hole 19, the welding jig 10 is fixed on the rotating mechanism through the mounting hole 19, and during welding, the welding jig 10 can drive the battery to rotate under the driving of the rotating mechanism so as to weld a plurality of surfaces of the aluminum shell.

Referring to fig. 2, the welding jig 10 includes a welding base 30 and a welding clamping member 40 disposed opposite to each other, and the welding clamping member 40 and the side wall of the welding base 30 are respectively provided with an air passage 11. The welding holder 40 may be moved toward the welding holder 40 by the driving member to hold the aluminum case of the battery, and then the aluminum case may be laser welded. The cold air generated by the vortex tube 20 simultaneously cools the welding base 30 and the welding clamp 40, avoiding excessive heat absorption when the aluminum housing contacts the welding base 30.

Referring to fig. 1, 2 and 5, a control valve 21, an input end 22 and a cool air output end 23 communicated with the air inlet 13 are arranged on the vortex tube 20. The input end 22 is connected with an air compressor, and air compressed by the air compressor enters the vortex tube 20 and can output cool air after vortex. The control valve 21 is used for adjusting the gas flow rate and the gas temperature of the cold gas output end 23, and the control valve 21 can be adjusted according to the requirements during welding.

By adjusting the gas flow, the cold gas flow can be quickly injected into the welding jig 10 when needed. In this embodiment, the control valve 21 can control the temperature of the cold air flow generated by the vortex tube 20 to be-10-50 ℃, and the cold air at the temperature is injected into the welding jig 10, so as to effectively cool the welding jig 10.

Specifically, the cold air output end 23 is provided with a three-way pipe 24, and the three-way pipe 24 is respectively connected with the control valve 21 and two air delivery pipes 25. The two air delivery pipes 25 are respectively communicated with the first branch 151 and the second branch 152.

The air delivery pipe 25 includes a first air delivery pipe 26 and a second air delivery pipe 27, the first air delivery pipe 26 being in communication with the first branch 151, and the second air delivery pipe 27 being in communication with the second branch 152. Specifically, the first air delivery pipe 26 and the second air delivery pipe 27 are respectively provided with a shunt pipe 28, the cold air enters the first air delivery pipe 26 and then is shunted through the shunt pipe 28, and then enters the first branch 151 on the welding base 30 and the welding clamping piece 40, and the cold air enters the second air delivery pipe 27 and then is shunted through the shunt pipe 28, and then enters the second branch 152 on the welding base 30 and the welding clamping piece 40.

The utility model provides an aluminum shell thin-wall welding device, wherein an air passage is arranged in a welding jig 10, a vortex tube 20 generates cold air, and the cold air enters an air passage 11 through an air inlet 13, so that the temperature of the welding jig is reduced, and the heat input quantity to an aluminum shell during welding is reduced; the air channel 11 comprises a first air channel 15 and a second air channel 16 which are communicated, the first air channel 15 extends longitudinally, the second air channel 16 is adjacent to the welding press block 12, and the welding press block 12 is cooled after cold air enters the second air channel 16, so that the heat which can be absorbed by the aluminum shell is further reduced; the vortex tube 20 is adopted to generate cold air, the temperature and the air flow rate of the air flow are controllable, and the production cost is low.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the utility model in any way, but is intended to cover any modifications, equivalents, alternatives, and improvements within the scope of the present application.

Claims (10)

1. The aluminum shell thin-wall welding device is characterized by comprising a welding jig and a vortex tube, wherein an air passage is arranged in the welding jig, and welding press blocks and air inlets are respectively arranged on two sides of the welding jig; the air passage extends from the air inlet to the welding pressing block and is communicated with the air outlet, and the air outlet is arranged at two ends of the welding jig; the vortex tube delivers cool air to the air inlet.

2. The aluminum shell thin-wall welding device according to claim 1, wherein the air passage comprises a first air passage and a second air passage, the first air passage extending from the air inlet in a first direction and communicating with the second air passage.

3. The aluminum shell thin-wall welding device according to claim 2, wherein the second gas passage extends in a second direction perpendicular to the first direction, the second gas passage being in communication with the gas outlet.

4. The aluminum hull thin-wall welding device according to claim 3, wherein the second gas channel is arranged adjacent to the welding press block, and the second gas channel penetrates through two ends of the welding jig.

5. The aluminum shell thin-wall welding device according to claim 2, wherein a first positioning frame and a second positioning frame are arranged in the middle of the welding jig, the first positioning frame and the second positioning frame are arranged along a first direction, and the size of the first positioning frame is larger than that of the second positioning frame.

6. The aluminum shell thin-wall welding device according to claim 5, wherein the first gas channel comprises a first branch and a second branch arranged on two sides of the first positioning frame and the second positioning frame.

7. The aluminum shell thin-wall welding device according to claim 1, wherein the welding jig comprises a welding base and a welding clamping piece which are oppositely arranged, and the air passages are formed in the welding clamping piece and the side wall of the welding base.

8. The aluminum shell thin-wall welding device according to claim 1, wherein a welding clamping portion is formed in the middle of the welding press block, and the thickness of the welding press block is gradually thinned.

9. The aluminum shell thin-wall welding device according to claim 6, wherein a control valve and a cold air output end communicated with the air inlet are arranged on the vortex tube, and the control valve regulates the gas flow and the gas temperature of the cold air output end.

10. The aluminum shell thin-wall welding device according to claim 9, wherein the cold air output end is provided with a three-way pipe, the three-way pipe is respectively connected with the control valve and two air delivery pipes, and the two air delivery pipes are respectively communicated with the first branch and the second branch.