CN214407936U

CN214407936U - New energy automobile battery box gas tightness detection device

Info

Publication number: CN214407936U
Application number: CN202023258699.1U
Authority: CN
Inventors: 王俊; 杜卫军; 姚圣金
Original assignee: Kunshan Tlp New Energy Auto Parts Co ltd
Current assignee: Kunshan Tlp New Energy Auto Parts Co ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-10-15
Anticipated expiration: 2030-12-29

Abstract

The utility model relates to a new energy automobile battery box gas tightness detection device uses in the technical field that the car battery detected, and it is including being used for the closing plate that seals battery box bottom surface opening and being used for pressing battery box seal a plurality of synchronous closing device on the closing plate, seamless being fixed with on the closing plate is used for the sealed piece of living of battery box side end opening, offer on the sealed piece or on the closing plate and be used for to the gas filled air inlet of battery box, closing device distributes on the closing plate along the outward flange of battery box. The utility model discloses have quick accurate effect that detects to the battery box.

Description

New energy automobile battery box gas tightness detection device

Technical Field

The utility model relates to a technical field that car battery detected, more specifically say, it relates to a new energy automobile battery box gas tightness detection device.

Background

The new energy automobile is a revolution in the automobile industry, changes the traditional automobile taking fuel oil as a power system, has the advantages of environmental protection, harmlessness and the like, is mainly an electric automobile, and has the advantages that the electric power can run for 300-500 kilometers, so the battery pack technology of the electric automobile is very important.

As shown in FIG. 1, a new energy automobile battery box 4, a battery assembly is installed inside the battery box 4, and the lower end of the battery box 4 is sealed through a bottom plate. Because the inner structure of car is complicated, consequently battery box 4's structure dysmorphism is formed through a plurality of sheet metal curls tailor-welded when producing, and battery box 4 need detect the gas tightness of battery box after having produced, ensures the leakproofness of battery box, further protects the battery in the battery box.

The lower end of a battery box is sealed and then inflated at present, but the problem of how to seal the lower end of the battery box is difficult because the battery box is specially-shaped. In view of the above circumstances, a detection device specially for detecting the airtightness of the battery box needs to be designed.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a new energy automobile battery box gas tightness detection device, its advantage is, can be fast accurate detect the battery box.

The above technical purpose of the present invention can be achieved by the following technical solutions: the utility model provides a new energy automobile battery box gas tightness detection device, is including being used for the closing plate that seals battery box bottom surface opening and be used for pressing battery box seal a plurality of synchronous closing device on the closing plate, seamless being fixed with on the closing plate is used for the sealed piece of living of battery box side end opening, offer on the sealed piece or on the closing plate and be used for to the gas filled air inlet in the battery box, closing device distributes on the closing plate along the outward flange of battery box.

Further setting: the pressing device comprises a connecting seat fixed on the sealing plate, a pressing arm rotatably connected to the connecting seat and a driving assembly used for driving the pressing arm to rotate, wherein one end, far away from the driving assembly, of the pressing arm is fixedly provided with a pressing block used for abutting the battery box on the sealing plate.

Further setting: the driving device comprises a V-shaped first driving arm and a second driving arm, the V-shaped first driving arm is rotatably connected to the connecting seat, the second driving arm is hinged to the first driving arm, the middle part of the first driving arm is hinged to the connecting seat, one end of the first driving arm is hinged to the second driving arm, the other end of the first driving arm is hinged to a driving cylinder, the cylinder body of the driving cylinder is hinged to the connecting seat, the piston rod of the driving cylinder is hinged to the first driving arm, and one end, far away from the hinged point, of the second driving arm is hinged to the pressing arm; when the driving cylinder drives the first driving arm to rotate, the first driving arm and the second driving arm drive the pressing arm to rotate.

Further setting: the pressing arm comprises a fixing rod hinged to the connecting seat and an adjusting rod adjustably fixed on the fixing rod, a sliding groove is formed in the fixing rod, a bolt penetrates through the adjusting rod, and the bolt is connected in the sliding groove in a sliding mode and locked through a nut in a sliding mode.

Further setting: the screw rod is fixed on the pressing block, the screw rod is connected to the adjusting rod in a sliding mode along the direction perpendicular to the adjusting rod, and nuts for limiting the screw rod to slide are connected to the screw rod through threads on the upper side and the lower side of the adjusting rod.

Further setting: the battery box is characterized in that a positioning plate for positioning the battery box is fixedly arranged on the sealing plate, and a rubber ring is arranged on the butt joint surface of the positioning plate and the battery box.

Further setting: and the upper surface of the sealing plate is fixedly provided with a connecting block for reducing the internal space of the battery box.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the pressing devices are synchronously driven, so that the periphery of the battery box is uniformly stressed, the lower end opening and the side end opening of the battery box are sealed, gas is introduced, and the air tightness of the battery box is detected through the change of air pressure;

2. all the pressing devices are driven by the driving cylinder, so that the pressing devices can move synchronously; the pressing block and the pressing arm can be adjusted, so that the pressing block can be perfectly butted with the battery box.

Drawings

Fig. 1 is a schematic structural view of a battery case;

FIG. 2 is a schematic view showing the structure of the battery pack and the entirety of the present embodiment after assembly;

FIG. 3 is a schematic structural diagram of the integral hidden battery box of the present embodiment;

FIG. 4 is a schematic structural view of the pressing device of the present embodiment;

fig. 5 is a schematic structural view of the present embodiment after the first driving arm is hidden.

In the figure: 11. a sealing plate; 12. a sealing block; 121. an air inlet; 13. positioning a plate; 14. a rubber ring; 15. connecting blocks; 2. a pressing device; 21. a connecting seat; 22. a pressing arm; 221. fixing the rod; 222. adjusting a rod; 23. a drive device; 231. a first drive arm; 232. a second drive arm; 233. a driving cylinder; 24. briquetting; 25. a screw; 4. a battery box.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

Example (b): referring to fig. 2-3, a new energy automobile battery box airtightness detection device comprises a sealing plate 11 for sealing the bottom opening of a battery box 4 and a plurality of synchronous pressing devices 2 for pressing the battery box 4 onto the sealing plate 11 in a sealing manner, a sealing block 12 for sealing the side end opening of the battery box 4 is seamlessly fixed on the sealing plate 11, and the pressing devices 2 seamlessly butt the battery box 4 with the sealing plate 11 and the sealing block 12, so that the battery box 4, the sealing plate 11 and the sealing block 12 form a sealed space. The sealing block 12 is provided with an air inlet 121, air is introduced into the battery box 4 through the air inlet 121, and when the battery box 4 is filled with gas with a certain pressure, the air pressure in the battery box 4 is unchanged within a period of time, which indicates that the quality of the battery box 4 is good in the welding process. The pressing device 2 is uniformly distributed on the sealing plate 11 along the outer edge of the battery box 4, and the pressing device 2 applies force to the battery box 4 at the same time, so that air leakage between the battery box 4 and the sealing plate 11 or the sealing block 12 caused by nonuniform stress of the battery box 4 is avoided.

Referring to fig. 2-3, a positioning plate 13 is fixed on the sealing plate 11, the positioning plate 13 is designed according to the shape of the battery box 4, a flange is fixedly arranged on the lower end edge of the battery box 4, the flange is in contact with the vertical surface of the positioning plate 13, and the positioning plate 13 prevents the battery box 4 from sliding horizontally. The contact position of the positioning plate 13 and the battery box 4 is provided with a rubber ring 14, and when the synchronous pressing device 2 simultaneously applies external force to the battery box 4, the rubber ring 14 is compressed, so that a gap between the battery box 4 and the positioning plate 13 is avoided.

Referring to fig. 2 to 3, a connection block 15 for reducing the inner space of the battery case 4 is fixed to the upper surface of the positioning plate 13. Because battery box 4 length reaches 1 meter, the very big of inner space is when doing the gas tightness and detecting, slowly admit air, avoid admitting air too fast like this and prop explosion battery box 4, but slowly admit air and lead to the air intake time too long, connecting block 15 occupies the inside space of battery box 4 to make battery box 4 inside can be full of gas fast, shorten the cycle that detects.

Referring to fig. 3-5, the pressing device 2 includes a connecting seat 21 fixed on the sealing plate 11, a pressing arm 22 rotatably connected to the connecting seat 21, and a driving assembly for driving the pressing arm 22 to rotate, and a pressing block 24 for pressing the battery box 4 against the sealing plate 11 is fixedly arranged at one end of the pressing arm 22 away from the driving assembly. When the driving assembly drives the pressing arm 22 to rotate towards the lower part in the figure, the pressing block 24 presses the flanging of the battery box 4 against the positioning plate 13 at the moment; otherwise, the pressing block 24 is separated from the battery box 4, so that the battery box 4 is convenient to take down. The connection holder 21 is fixed to the sealing plate 11 by an L-shaped block.

Referring to fig. 3-5, the driving device 23 includes a V-shaped first driving arm 231 rotatably connected to the connecting base 21, and a second driving arm 232 hinged to the first driving arm 231, a middle portion of the first driving arm 231 is hinged to the connecting base 21, one end of the first driving arm 231 is hinged to the second driving arm 232, the other end is hinged to a driving cylinder 233, a cylinder body of the driving cylinder 233 is hinged to the connecting base 21, a piston rod of the driving cylinder 233 is hinged to the first driving arm 231, and one end of the second driving arm 232 away from the hinge point is hinged to the pressing arm 22; when the piston rod of the driving cylinder 233 extends, the first driving arm 231 is driven to rotate upwards, and the first driving arm 231 and the second driving arm 232 drive the pressing arm 22 to rotate downwards; when the piston rod of the driving cylinder 233 retracts, the pressing arm 22 is moved upward. The effect of low voltage and release to the battery box 4 is achieved.

Referring to fig. 3-5, the pressing arm 22 includes a fixing rod 221 hinged on the connecting seat 21, and an adjusting rod 222 adjustably fixed on the fixing rod 221, wherein a sliding slot is horizontally formed on the fixing rod 221, a bolt is inserted through the adjusting rod 222, and the bolt is slidably connected in the sliding slot and locked by a nut. When the adjusting rod 222 needs to be slid, the nut is loosened, and the nut is locked after the adjusting rod 222 is slid and adjusted, so that the total length of the pressing arm 22 is adjusted, and the pressing block 24 is ensured to be butted with the edge of the battery box 4.

Referring to fig. 4-5, a screw 25 is vertically fixed on the pressing block 24, the screw 25 is slidably connected to the adjusting rod 222 along the vertical direction, and nuts for limiting the sliding of the screw 25 are threadedly connected to the screw 25 at the upper and lower sides of the adjusting rod 222. The position of the screw rod 25 is adjusted by rotating the nut, so that all the pressing blocks 24 are further ensured to be pressed on the battery box 4 at the same time, the battery box 4 is stressed uniformly and synchronously, and the situation that the battery box 4 is stressed unevenly to cause tilting and air leakage is avoided.

Referring to fig. 2-3, a rotary clamping cylinder is fixedly arranged on the outer side surface of the sealing block 12, the sealing block 12 is clamped at the position of the side port of the battery box 4, and the rotary clamping cylinder is used for pressing the battery box 4 at the position.

The implementation principle of the above embodiment is as follows: firstly, adjusting the pressing devices 2 to enable all the pressing devices 2 to be in an open state, then installing the battery box 4 on the positioning plate 13, finally enabling all the driving cylinders 233 to work simultaneously to enable the pressing block 24 to press the battery box 4 on the positioning plate 13, after the installation is finished, introducing positive-pressure gas into the battery box 4, observing the change of air pressure in the battery box 4 after a period of time, wherein the change of the air pressure does not exist, and indicating that the sealing performance of the battery box 4 is good.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.

Claims

1. The utility model provides a new energy automobile battery box gas tightness detection device which characterized in that: the battery box sealing device comprises a sealing plate (11) used for sealing an opening on the bottom surface of the battery box and a plurality of synchronous pressing devices (2) used for pressing the battery box on the sealing plate (11) in a sealing mode, a sealing block (12) used for sealing an opening at the side end of the battery box is seamlessly fixed on the sealing plate (11), an air inlet used for inflating the battery box is formed in the sealing block (12) or the sealing plate (11), and the pressing devices (2) are distributed on the sealing plate (11) along the outer edge of the battery box.

2. The new energy automobile battery box airtightness detection device according to claim 1, characterized in that: the pressing device (2) comprises a connecting seat (21) fixed on the sealing plate (11), a pressing arm (22) rotatably connected to the connecting seat (21) and a driving assembly used for driving the pressing arm (22) to rotate, wherein a pressing block (24) used for abutting the battery box on the sealing plate (11) is fixedly arranged at one end, far away from the driving assembly, of the pressing arm (22).

3. The new energy automobile battery box airtightness detection device according to claim 2, characterized in that: the driving assembly (23) comprises a V-shaped first driving arm (231) rotatably connected to the connecting seat (21) and a second driving arm (232) hinged to the first driving arm (231), the middle part of the first driving arm (231) is hinged to the connecting seat (21), one end of the first driving arm (231) is hinged to the second driving arm (232), the other end of the first driving arm is hinged to a driving cylinder (233), a cylinder body of the driving cylinder (233) is hinged to the connecting seat (21), a piston rod of the driving cylinder (233) is hinged to the first driving arm (231), and one end, far away from a hinge point, of the second driving arm (232) is hinged to the pressing arm (22); when the driving cylinder (233) drives the first driving arm (231) to rotate, the first driving arm (231) and the second driving arm (232) drive the pressing arm (22) to rotate.

4. The new energy automobile battery box airtightness detection device according to claim 2 or 3, characterized in that: the pressing arm (22) comprises a fixing rod (221) hinged to the connecting seat (21) and an adjusting rod (222) adjustably fixed to the fixing rod (221), a sliding groove is formed in the fixing rod (221), a bolt penetrates through the adjusting rod (222), and the bolt is connected in the sliding groove in a sliding mode and locked through a nut in a sliding mode.

5. The new energy automobile battery box airtightness detection device according to claim 4, characterized in that: a screw rod (25) is fixed on the pressing block (24), the screw rod (25) is connected to the adjusting rod (222) in a sliding mode along the direction perpendicular to the adjusting rod (222), and nuts for limiting the screw rod (25) to slide are connected to the screw rod (25) through threads on the upper side and the lower side of the adjusting rod (222).

6. The new energy automobile battery box airtightness detection device according to claim 1, characterized in that: the battery box sealing structure is characterized in that a positioning plate (13) used for positioning the battery box is fixedly arranged on the sealing plate (11), and a rubber ring (14) is arranged on the butt joint surface of the positioning plate (13) and the battery box.

7. The new energy automobile battery box airtightness detection device according to claim 1, characterized in that: and a connecting block (15) for reducing the internal space of the battery box is fixed on the upper surface of the sealing plate (11).