CN214134402U

CN214134402U - Welding device for high-voltage energy accumulator of electric automobile

Info

Publication number: CN214134402U
Application number: CN202022418357.5U
Authority: CN
Inventors: 孙良平
Original assignee: Ningbo Hongju Intelligent Equipment Co ltd
Current assignee: Ningbo Hongju Intelligent Equipment Co ltd
Priority date: 2020-10-27
Filing date: 2020-10-27
Publication date: 2021-09-07
Anticipated expiration: 2030-10-27

Abstract

The utility model discloses an electric automobile high pressure energy storage ware welding set, including first electrode, second electrode, aerating device and sealed chamber, sealed chamber covers first electrode and second electrode seal on the surface of the region of waiting to weld of work piece, aerating device and sealed chamber intercommunication, the surface of the region of waiting to weld of work piece is equipped with the gas charging hole, the gas charging hole communicates with the inner space of work piece, the gas charging hole communicates with sealed chamber; in the working process, the inflating device inflates the inner space of the workpiece and the inner part of the sealed cavity to keep the air pressure in the sealed cavity balanced with the air pressure in the workpiece, the second electrode is placed on the surface of a welding area of the workpiece and covers the inflating hole, electric arc is generated between the first electrode and the second electrode to generate high temperature, the surface of the second electrode, which is in contact with the workpiece, is melted, the second electrode is hermetically fixed on the workpiece and covers the inflating hole in a sealing mode after cooling, then the gas in the sealed cavity is discharged, and finally the sealed cavity is removed from the workpiece to finish welding.

Description

Welding device for high-voltage energy accumulator of electric automobile

Technical Field

The utility model relates to the field of welding technique, especially, relate to an electric automobile high pressure energy storage ware welding set.

Background

An accumulator is an energy storage device in a hydropneumatic system. The energy in the system is converted into compression energy or potential energy to be stored at a proper time, and when the system needs the energy, the compression energy or the potential energy is converted into hydraulic energy or air pressure and the like to be released, and the energy is supplied to the system again. When the system pressure is increased instantaneously, it can absorb the energy of the part to ensure the pressure of the whole system is normal.

The automobile energy accumulator in the prior art is a reusable energy accumulator generally, after the energy accumulator is used for a long time, when internal gas is leaked gradually to cause insufficient air pressure, a special inflating device can be used for inflating and pressure supplementing the tank body, but the energy accumulator is used more and more widely, the using amount is more and more, in order to save cost and facilitate replacement, a disposable energy accumulator is designed, the tank body is of a full-sealing structure and cannot be reopened after primary sealing, the tank body is made of metal materials, welding is needed in the sealing process, however, the internal part of the tank body needs to be inflated firstly before welding, welding devices need to be welded under a high-pressure environment, and welding devices which are not suitable in the prior art are used for welding the energy accumulator under the high-pressure environment.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an electric automobile high pressure energy storage ware welding set to solve at least one technical problem who proposes in the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme:

the utility model provides an electric automobile high pressure energy storage ware welding set, includes first electrode, second electrode, aerating device and sealed chamber, sealed chamber will first electrode with the sealed cover of second electrode treats the welding area on the surface at the work piece, aerating device with sealed chamber intercommunication, the work piece is treated the surface in welding area and is equipped with the gas charging hole, gas charging hole with the inner space intercommunication of work piece, gas charging hole with sealed chamber intercommunication.

The utility model provides an electric automobile high pressure energy storage ware welding set, in the working process, aerating device aerifys work piece inner space and sealed intracavity portion earlier, make the atmospheric pressure of sealed intracavity portion keep balance with the inside atmospheric pressure of work piece, the second electrode is placed on the welding area surface of work piece and is covered on aerifing the hole, be close to the second electrode with first electrode, produce electric arc and produce high temperature between first electrode and the second electrode, melt the surface of second electrode and work piece contact, remove behind the first electrode, the work piece cools off gradually, the second electrode is sealed to be fixed on the work piece and sealed cover aerifys the hole, then with the gaseous emission of sealed intracavity portion, remove sealed chamber from the work piece at last, accomplish weldment work.

In a possible embodiment of the present invention, the welding device for the high-voltage energy accumulator of the electric vehicle further includes a machine body, a guide cylinder is fixedly connected to the machine body, the guide cylinder is vertically disposed, the first electrode is located inside the guide cylinder, the upper end of the first electrode is slidably connected to the upper end of the guide cylinder along a vertical direction, and the first electrode is located right above the second electrode; the sealed cavity is formed by the inner side space of the guide cylinder, a gap is formed between the outer wall of the lower end of the first electrode and the inner wall of the guide cylinder, and the inflation device is communicated with the gap.

Through the utility model discloses an above-mentioned possible embodiment, first electrode slide from top to bottom for the guide cylinder and change and the second electrode between the distance, first electrode slip in-process, have the clearance all the time between the lower extreme of first electrode and the guide cylinder inner wall, and aerating device and clearance intercommunication consequently can aerify to sealed chamber.

In a possible embodiment of the present invention, a first driving device is fixedly mounted on the machine body, and the first driving device is in transmission connection with the first electrode.

Through the above possible embodiment of the present invention, the first driving device is used for driving the first electrode to move along the vertical direction, and the first driving device may adopt a pneumatic cylinder or a hydraulic cylinder.

The utility model discloses an in a possible embodiment, aerating device includes gas holder, gas tube and blast pipe, wherein one end of gas tube with the gas holder intercommunication, the other end of gas tube with sealed chamber intercommunication, the blast pipe with the gas tube is located the gas holder with position intercommunication between the sealed chamber, install the choke valve on the gas tube, install the relief valve on the blast pipe, the choke valve is located the blast pipe is kept away from one side of sealed chamber.

Through the utility model discloses an above-mentioned possible embodiment, when aerifing to the seal chamber, closes the relief valve, opens the choke valve, and high-pressure gas in the gas holder fills the seal chamber through the gas tube, and the welding needs to remove the pressure to the seal chamber after finishing, then removes the guide cylinder from the work surface, consequently, can close the choke valve earlier, with the disconnection between gas holder and the seal chamber, then opens the relief valve again, and high-pressure gas in the seal chamber is discharged from the blast pipe, accomplishes the pressure release.

The utility model discloses an in a possible embodiment, be equipped with the profile modeling recess on the lower terminal surface of guide cylinder, the inner wall of profile modeling recess with the regional surface shape of welding of treating of work piece is the same, the regional surface of welding of treating of work piece is the epirelief curved surface, the inner wall of profile modeling recess can with the regional surface of welding of treating of work piece closely laminates.

Through the utility model discloses an above-mentioned possible embodiment, the top surface that treats welding zone surface and be located the work piece of work piece upwards holds up the lower terminal surface butt that makes the top surface of work piece and guide cylinder with the work piece, and the profile modeling recess can improve the sealing performance in sealed chamber.

The utility model discloses an in a possible embodiment, be equipped with the first seal groove of round on the inner wall of profile modeling recess, the first sealing washer of fixedly connected with in the first seal groove.

Through the utility model discloses an above-mentioned possible embodiment, among the welding process, the regional surface sealing butt of treating of first sealing washer and work piece, first sealing washer can further improve the leakproofness in sealed chamber.

In a possible embodiment of the present invention, a second driving device is further installed on the machine body, the second driving device is connected to the workpiece in a transmission manner, and the second driving device is used for driving the workpiece to move along the vertical direction.

Through the utility model discloses an above-mentioned possible embodiment, in the course of working, the first driving workpiece up-motion of second drive arrangement, make treating of work piece weld zone face and profile modeling recess inner wall butt, first sealing washer compresses tightly at the work piece surface, and the seal chamber is sealed inside first electrode and second electrode, is convenient for inflate the pressurization to seal chamber and work piece inner space.

The utility model discloses an among the possible embodiment, fixedly connected with clamping platform on the organism, clamping platform with organism is along vertical direction sliding connection, second drive arrangement with clamping platform transmission is connected, clamping bench surface is equipped with fixed station.

Through the utility model discloses an above-mentioned possible embodiment fixes the work piece on fixed station, and fixed station can adopt the fixed orifices, pegs graft the work piece and fix a position and fix the work piece in the fixed orifices, perhaps uses anchor clamps to fix the work piece centre gripping on fixed station, and second drive arrangement can adopt pneumatic cylinder or pneumatic cylinder, and second drive arrangement drive clamping platform rises or descends.

The utility model discloses an in a possible embodiment, be equipped with the second seal groove on the upper end inside wall of guide cylinder, fixedly connected with second sealing washer in the second seal groove, the second sealing washer with the sealed sliding connection of first electrode outer wall, the clearance is located the second sealing washer with between the sealed chamber.

Through the utility model discloses an above-mentioned possible embodiment, the second sealing washer can seal the clearance, avoids gas to leak from the clearance.

Drawings

FIG. 1 is a schematic structural diagram of a welding device for a high-pressure accumulator of an electric vehicle according to an embodiment of the present invention;

fig. 2 is a front view along the Y-axis direction in the embodiment of the present invention;

FIG. 3 is a schematic view of the structure of the guide cylinder in the embodiment of the present invention;

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

FIG. 5 is a schematic view showing a connection structure of the air-filling pipe and the air-discharging pipe according to the embodiment of the present invention;

FIG. 6 is a partial enlarged view at B in FIG. 4;

fig. 7 is a partially enlarged view at C in fig. 4.

Description of reference numerals:

110. a first electrode; 120. a second electrode; 200. an inflator; 210. a gas storage tank; 220. an inflation tube; 230. an exhaust pipe; 240. a throttle valve; 250. a pressure relief valve; 400. a workpiece; 410. an inflation hole; 500. a body; 300. a guide cylinder; 310. A gap; 320. sealing the cavity; 330. a profiling groove; 340. a first seal groove; 350. a first seal ring; 360. a second seal groove; 370. a second seal ring; 610. a first driving device; 620. a second driving device; 700. a clamping table; 710. and (5) fixing the station.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

In the drawings, X-Y-Z are coordinate axes of a spatial coordinate system, and hereinafter, "upper" means a direction indicated by the Z axis, "lower" means a direction opposite to the direction indicated by the Z axis, and the fact that a designated member is located above another member means that another member and the designated member are arranged in order along the direction indicated by the Z axis.

Referring to fig. 1 to 4, in an embodiment of the present invention, a welding device for a high-voltage energy accumulator of an electric vehicle is provided, including a first electrode 110, a second electrode 120, an inflator 200 and a sealing chamber 320, where the sealing chamber 320 hermetically covers the first electrode 110 and the second electrode 120 on a surface of a region to be welded of a workpiece 400, the inflator 200 is communicated with the sealing chamber 320, a gas filling hole 410 is formed on the surface of the region to be welded of the workpiece 400, the gas filling hole 410 is communicated with an inner space of the workpiece 400, and the gas filling hole 410 is communicated with the sealing chamber 320.

In the welding device for the high-voltage accumulator of the electric vehicle, during operation, the gas charging device 200 charges gas into the inner space of the workpiece 400 and the inner space of the sealed cavity 320, so that the gas pressure in the sealed cavity 320 is balanced with the gas pressure in the workpiece 400, the second electrode 120 is placed on the surface of the welding area of the workpiece 400 and covers the gas charging hole 410, the first electrode 110 is close to the second electrode 120, an electric arc is generated between the first electrode 110 and the second electrode 120, high temperature is generated, the surface of the second electrode 120, which is in contact with the workpiece 400, is melted, after the first electrode 110 is removed, the workpiece 400 is gradually cooled, the second electrode 120 is hermetically fixed on the workpiece 400 and hermetically covers the gas charging hole 410, then the gas in the sealed cavity 320 is discharged, and finally the sealed cavity 320 is removed from the workpiece 400, thereby completing the welding operation.

In a possible implementation manner of this embodiment, the welding device for the high-voltage accumulator of the electric vehicle further includes a machine body 500, the machine body 500 is fixedly connected with a guide cylinder 300, the guide cylinder 300 is vertically disposed, the first electrode 110 is located inside the guide cylinder 300, the upper end of the first electrode 110 is slidably connected with the upper end of the guide cylinder 300 along the vertical direction, and the first electrode 110 is located right above the second electrode 120; the sealed chamber 320 is formed by a space inside the guide cylinder 300, a gap 310 is formed between the outer wall of the lower end of the first electrode 110 and the inner wall of the guide cylinder 300, and the inflator 200 communicates with the gap 310.

Through the above possible embodiments of the present embodiment, the first electrode 110 slides up and down relative to the guide cylinder 300 to change the distance between the first electrode 110 and the second electrode 120, and during the sliding process of the first electrode 110, a gap 310 is always present between the lower end of the first electrode 110 and the inner wall of the guide cylinder 300, and the inflator 200 is communicated with the gap 310, so that the sealed cavity 320 can be inflated.

In a possible implementation manner of this embodiment, the body 500 is fixedly mounted with a first driving device 610, and the first driving device 610 is in transmission connection with the first electrode 110.

With the above possible implementation manner of the present embodiment, the first driving device 610 is used to drive the first electrode 110 to move in the vertical direction, and the first driving device 610 may adopt a pneumatic cylinder or a hydraulic cylinder.

Referring to fig. 1 and 5, in a possible implementation manner of this embodiment, the inflation device 200 includes an air tank 210, an inflation tube 220 and an exhaust tube 230, one end of the inflation tube 220 is communicated with the air tank 210, the other end of the inflation tube 220 is communicated with the sealed cavity 320, the exhaust tube 230 is communicated with the portion of the inflation tube 220 located between the air tank 210 and the sealed cavity 320, a throttle valve 240 is installed on the inflation tube 220, a pressure relief valve 250 is installed on the exhaust tube 230, and the throttle valve 240 is located on a side of the exhaust tube 230 away from the sealed cavity 320.

Through the above possible implementation manner of this embodiment, when the sealed cavity 320 is inflated, the pressure relief valve 250 is closed, the throttle valve 240 is opened, the high-pressure gas in the gas storage tank 210 is inflated into the sealed cavity 320 through the inflation tube 220, after welding, the sealed cavity 320 needs to be depressurized, and then the guide cylinder 300 is removed from the surface of the workpiece 400, so that the throttle valve 240 may be closed first, the gas storage tank 210 and the sealed cavity 320 are disconnected, then the pressure relief valve 250 is opened, and the high-pressure gas in the sealed cavity 320 is exhausted from the exhaust pipe 230, so as to complete depressurization.

Referring to fig. 4, 6 and 7, in a possible implementation manner of this embodiment, a profiling groove 330 is provided on the lower end surface of the guide cylinder 300, the shape of the inner wall of the profiling groove 330 is the same as that of the area to be welded of the workpiece 400, the surface of the area to be welded of the workpiece 400 is an upward convex curved surface, the inner wall of the profiling groove 330 is an upward concave curved surface, and the inner wall of the profiling groove 330 can be tightly attached to the surface of the area to be welded of the workpiece 400.

With the above possible embodiment of the present embodiment, the surface of the region to be welded of the workpiece 400 is located on the top surface of the workpiece 400, and the profiling groove 330 can improve the sealing performance of the sealing cavity 320 by lifting up the workpiece 400 so that the top surface of the workpiece 400 abuts against the lower end surface of the guide cylinder 300.

In a possible implementation manner of this embodiment, a circle of first seal groove 340 is disposed on an inner wall of the profiling groove 330, and a first seal ring 350 is fixedly connected in the first seal groove 340.

With the above possible embodiments of the present embodiment, during welding, the first sealing ring 350 is in sealing contact with the surface of the region to be welded of the workpiece 400, and the first sealing ring 350 can further improve the sealing performance of the sealing cavity 320.

Referring to fig. 1 and fig. 2, in a possible implementation manner of the present embodiment, a second driving device 620 is further installed on the machine body 500, the second driving device 620 is in transmission connection with the workpiece 400, and the second driving device 620 is used for driving the workpiece 400 to move in the vertical direction.

With the above possible embodiments of the present embodiment, during the machining process, the second driving device 620 moves the workpiece 400 upwards to make the surface of the region to be welded of the workpiece 400 abut against the inner wall of the profiling groove 330, the first sealing ring 350 presses against the surface of the workpiece 400, and the sealing cavity 320 seals the first electrode 110 and the second electrode 120 inside, so as to inflate and pressurize the sealing cavity 320 and the inner space of the workpiece 400.

In a possible implementation manner of this embodiment, a clamping table 700 is fixedly connected to the machine body 500, the clamping table 700 is slidably connected to the machine body 500 along a vertical direction, a second driving device 620 is in transmission connection with the clamping table 700, and a fixing station 710 is disposed on an upper surface of the clamping table 700.

Through the above possible implementation manner of the embodiment, the workpiece 400 is fixed on the fixing station 710, the fixing station 710 may employ a fixing hole, the workpiece 400 is inserted into the fixing hole to position and fix the workpiece 400, or the workpiece 400 is clamped and fixed on the fixing station 710 by using a clamp, the second driving device 620 may employ a pneumatic cylinder or a hydraulic cylinder, and the second driving device 620 drives the clamping table 700 to ascend or descend.

Referring to fig. 4, in a possible implementation manner of the present embodiment, a second sealing groove 360 is disposed on an inner sidewall of an upper end of the guide cylinder 300, a second sealing ring 370 is fixedly connected in the second sealing groove 360, the second sealing ring 370 is in sealing sliding connection with an outer wall of the first electrode 110, and the gap 310 is located between the second sealing ring 370 and the sealing cavity 320.

With the above possible embodiments of the present embodiment, the second sealing ring 370 can seal the gap 310, and prevent gas from leaking from the gap 310.

The above embodiments are merely illustrative of the present invention, and are not intended to limit the present invention, and those skilled in the art can make modifications without inventive contribution to the embodiments of the present invention as needed after reading the present specification, but all the embodiments of the present invention are protected by patent laws within the scope of the claims of the present invention.

Claims

1. The welding device for the high-voltage accumulator of the electric automobile is characterized by comprising a first electrode (110), a second electrode (120), an air charging device (200) and a sealing cavity (320), wherein the sealing cavity (320) is used for sealing and covering the first electrode (110) and the second electrode (120) on the surface of a region to be welded of a workpiece (400), the air charging device (200) is communicated with the sealing cavity (320), an air charging hole (410) is formed in the surface of the region to be welded of the workpiece (400), the air charging hole (410) is communicated with the inner space of the workpiece (400), and the air charging hole (410) is communicated with the sealing cavity (320).

2. The welding device for the high-voltage accumulator of the electric vehicle according to claim 1, further comprising a machine body (500), wherein a guide cylinder (300) is fixedly connected to the machine body (500), the guide cylinder (300) is vertically arranged, the first electrode (110) is located inside the guide cylinder (300), the upper end of the first electrode (110) is connected with the upper end of the guide cylinder (300) in a sliding manner in a vertical direction, and the first electrode (110) is located right above the second electrode (120); the sealed cavity (320) is formed by the space inside the guide cylinder (300), a gap (310) is formed between the outer wall of the lower end of the first electrode (110) and the inner wall of the guide cylinder (300), and the inflating device (200) is communicated with the gap (310).

3. The welding device for the high-voltage accumulator of the electric automobile according to claim 2, wherein a first driving device (610) is fixedly mounted on the machine body (500), and the first driving device (610) is in transmission connection with the first electrode (110).

4. The welding device of the high-pressure accumulator of the electric automobile according to claim 3, wherein the gas charging device (200) comprises a gas storage tank (210), a gas charging pipe (220) and a gas discharging pipe (230), one end of the gas charging pipe (220) is communicated with the gas storage tank (210), the other end of the gas charging pipe (220) is communicated with the sealed cavity (320), the gas discharging pipe (230) is communicated with the gas charging pipe (220) at a position between the gas storage tank (210) and the sealed cavity (320), a throttle valve (240) is installed on the gas charging pipe (220), a pressure releasing valve (250) is installed on the gas discharging pipe (230), and the throttle valve (240) is located on one side of the gas discharging pipe (230) far away from the sealed cavity (320).

5. The welding device for the high-pressure accumulator of the electric automobile according to claim 4, wherein a profiling groove (330) is arranged on the lower end surface of the guide cylinder (300), the shape of the inner wall of the profiling groove (330) is the same as that of the surface of the area to be welded of the workpiece (400), the surface of the area to be welded of the workpiece (400) is an upward convex curved surface, the inner wall of the profiling groove (330) is an upward concave curved surface, and the inner wall of the profiling groove (330) can be tightly attached to the surface of the area to be welded of the workpiece (400).

6. The welding device for the high-pressure accumulator of the electric automobile according to claim 5, wherein a circle of first sealing groove (340) is formed in the inner wall of the profiling groove (330), and a first sealing ring (350) is fixedly connected in the first sealing groove (340).

7. The welding device for the high-pressure accumulator of the electric automobile according to claim 6, wherein a second driving device (620) is further installed on the machine body (500), the second driving device (620) is in transmission connection with the workpiece (400), and the second driving device (620) is used for driving the workpiece (400) to move in a vertical direction.

8. The welding device for the high-pressure accumulator of the electric automobile according to claim 7, wherein a clamping table (700) is fixedly connected to the machine body (500), the clamping table (700) is connected with the machine body (500) in a sliding mode in a vertical direction, the second driving device (620) is in transmission connection with the clamping table (700), and a fixing station (710) is arranged on the upper surface of the clamping table (700).

9. The welding device for the high-pressure accumulator of the electric automobile according to claim 8, wherein a second sealing groove (360) is formed in an inner side wall of an upper end of the guide cylinder (300), a second sealing ring (370) is fixedly connected in the second sealing groove (360), the second sealing ring (370) is in sealing sliding connection with an outer wall of the first electrode (110), and the gap (310) is located between the second sealing ring (370) and the sealing cavity (320).