CN222353444U - Airtight detection sealing mechanism - Google Patents

Abstract

The utility model relates to battery detection equipment, and provides an airtight detection sealing mechanism which comprises a first sealing piece (4) and a second sealing piece, wherein the first sealing piece (4) and the second sealing piece are respectively arranged on two sides of a to-be-detected piece to form sealing spaces on two sides of the to-be-detected piece, and the sealing spaces are used for filling detection gas for sealing detection. The utility model ensures the tightness of the piece to be detected in the sealing detection process, prolongs the sealing effect, avoids the shutdown wiping times in the detection process, and improves the productivity.

Description

Airtight detection sealing mechanism

Technical Field

The present utility model relates to a battery detection apparatus, and in particular, to an airtight detection sealing mechanism.

Background

In the manufacturing process of the power battery cover plate, the explosion-proof valve and the polar post are required to be welded on the cover plate, and because the cover plate, the explosion-proof valve and the polar post are all made of metal materials, metal dust is easy to generate during welding, if the dust removal effect is poor, tiny leakage holes exist in welding veins around the cover plate, the explosion-proof valve and the polar post, and therefore the defective cover plate is required to be subjected to tightness detection, namely the welding seam positions of the explosion-proof valve and the polar post are detected.

The helium detection of the battery cover plate mainly uses helium as a tracer gas, the helium detection clamp is vacuumized, the helium is flushed into the helium detection clamp filled with a product to be detected, and the leakage condition of the product is judged through a helium detector. When carrying out battery apron helium and examining, need seal the battery apron, however prior art is sealed effect when the metal dust is more not good, causes the mistake to arrange the rate high, so need frequent shut down to wipe the sealing washer, wipe the number of times many, need special people to wipe the sealing washer, greatly reduced the productivity.

Disclosure of utility model

The technical problem to be solved by the utility model is to provide the airtight detection sealing mechanism, so that the tightness of the battery cover plate during helium detection is ensured, the sealing effect is prolonged, the shutdown wiping times in the detection process are avoided, and the productivity is improved.

In order to solve the technical problems, the utility model provides an airtight detection sealing mechanism, which comprises a first sealing piece and a second sealing piece, wherein the first sealing piece and the second sealing piece are respectively arranged on two sides of a to-be-detected piece to form sealing spaces on two sides of the to-be-detected piece, and the sealing spaces are used for filling detection gas for sealing detection.

In some embodiments of the present utility model, the device further includes a first chamber jig and a second chamber jig, the first chamber jig and the second chamber jig are respectively disposed on two sides of the to-be-inspected piece to clamp the to-be-inspected piece, a first chamber is disposed on a side of the first chamber jig close to the to-be-inspected piece, a second chamber is disposed on a side of the second chamber jig close to the to-be-inspected piece, and the first sealing member is disposed between the first chamber jig and the to-be-inspected piece to form the sealing space between the first chamber and the to-be-inspected piece, and a second sealing member is disposed between the second chamber jig and the to-be-inspected piece to form the sealing space between the second chamber and the to-be-inspected piece.

In some embodiments of the present utility model, the to-be-inspected piece is a battery cover plate, two sides of the battery cover plate are a first side surface and a second side surface, the first side surface is a surface where a boss structure on the battery cover plate is located, the first sealing piece is disposed between the first chamber jig and the first side surface, the first sealing piece is formed with an inner ring for accommodating the boss structure on the battery cover plate, and the second sealing piece is disposed between the second chamber jig and the second side surface.

In some embodiments of the utility model, the second seal comprises:

a pole seal ring arranged corresponding to the pole on the battery cover plate, and/or

An explosion-proof valve sealing ring which is used for being arranged corresponding to the explosion-proof valve on the battery cover plate and/or

And the liquid injection hole sealing ring is used for being arranged corresponding to the liquid injection hole on the battery cover plate.

In some embodiments of the present utility model, the battery cover further comprises a sealing member cover plate, wherein the sealing member cover plate is arranged on the first sealing member and is connected with the first chamber jig, and the sealing member cover plate is formed with a through groove for accommodating the battery cover plate.

In some embodiments of the present utility model, the through groove is formed with a stopper for laterally positioning the battery cover plate.

In some embodiments of the present utility model, the seal positioning pin is disposed between the first seal and the first chamber fixture to form a position, and/or the gland positioning pin is disposed between the seal cover plate and the first chamber fixture to form a position.

In some embodiments of the present utility model, the first chamber fixture includes a mounting plate with guide posts disposed thereon, and the second chamber fixture is provided with guide sleeves for sliding engagement with the guide posts.

In some embodiments of the utility model, the second chamber fixture is provided with a resilient return for mounting on the battery cover plate to provide a force to move the battery cover plate away from the second chamber fixture.

Through the scheme, the beneficial effects of the utility model are as follows:

The airtight detection sealing mechanism provided by the utility model is respectively provided with the first sealing element and the second sealing element, so that the first sealing element and the second sealing element can be respectively arranged at two sides of the battery cover plate, thereby forming a sealing space at two sides of the battery cover plate, and the detection gas can be filled into the sealing space at one side of the battery cover plate so as to be capable of carrying out sealing detection.

Additional features and advantages of the utility model will be set forth in the detailed description which follows.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the description serve to explain, without limitation, the utility model. In the drawings:

FIG. 1 is a schematic view of the structure of one embodiment of the airtight detecting and sealing mechanism of the present utility model;

FIG. 2 is a schematic diagram of a first chamber fixture;

FIG. 3 is a schematic diagram of a second chamber fixture;

FIG. 4 is a cross-sectional view of one embodiment of the hermetically sealed construction of the present utility model in a closed state of the clamp;

FIG. 5 is a top view of the first chamber fixture;

Fig. 6 is a bottom view of the second chamber fixture.

Description of the reference numerals

1. The device comprises a mounting plate, a first chamber jig, a sealing element cover plate, a first sealing element, a guiding pillar, a battery cover plate, a sealing element positioning pin, a gland positioning pin, a second chamber jig, a first bushing, a second bushing, a sealing ring of an explosion-proof valve, a sealing ring of a pole, a sealing ring of an anti-sticking plunger, a helium detecting sealing ring, a compression spring, a clamping spring, a sealing ring of a filling hole and a limiting block.

Detailed Description

The following detailed description of the embodiments of the utility model is provided in connection with the accompanying drawings, it being understood that the embodiments described herein are for purposes of illustration and explanation only, and the scope of the utility model is not limited to the following embodiments.

In the description of the present utility model, unless explicitly stated or limited otherwise, the terms "forming," "providing," "arranging," "connecting," and the like should be construed broadly, and may, for example, be directly connected, indirectly connected through an intermediary, fixedly connected, detachably connected, or integrally connected, directly connected, indirectly connected through an intermediary connection, or be in communication with the interior of two elements or the interaction relationship of two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present utility model, unless otherwise indicated, the azimuth or positional relationship indicated by the azimuth words "upper", "lower", "inner", "outer", etc. are based on the azimuth or positional relationship shown in the drawings, and are merely contacted to facilitate description of the present utility model and to simplify description, rather than to indicate or imply that the device or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model, and the azimuth terms of the present utility model should be construed in connection with the actual installation state.

In the prior art, the helium detection technology of the battery cover plate is mainly single-sided sealing, and because dust generated in the front end welding process is not cleaned, after a certain amount of helium detection products, sealing elements with single-sided sealing can be attached by dust, so that the sealing effect is poor, micro leakage occurs, the error discharge rate is high, and the sealing elements need to be frequently wiped. Therefore, the utility model provides an airtight detection sealing mechanism, which comprises a first sealing element 4 and a second sealing element, wherein the first sealing element 4 and the second sealing element are preferably sealing rings, the first sealing element 4 and the second sealing element are respectively arranged at two sides of a to-be-detected element to form sealing spaces at two sides of the to-be-detected element, and the sealing spaces are used for filling detection gas for sealing detection. It should be noted that the types of the to-be-detected piece and the detection gas are not limiting to the protection scope of the present utility model, for example, the to-be-detected piece may be a battery cover plate, the detection gas may be helium, and for convenience of understanding and description, the following detailed description of the technical scheme of the present utility model will be provided with reference to the specific embodiment of the helium detection of the battery cover plate.

Referring to fig. 1 to 6, as a specific embodiment of the airtight detection sealing mechanism of the present utility model, the airtight detection sealing mechanism includes a first chamber jig 2 and a second chamber jig 9, the first chamber jig 2 and the second chamber jig 9 are respectively disposed on two sides of the battery cover plate for clamping the battery cover plate 6, a first chamber is disposed on a side of the first chamber jig 2 close to the battery cover plate 6, a second chamber is disposed on a side of the second chamber jig 9 close to the battery cover plate 6, a first sealing member 4 is disposed between the first chamber jig 2 and the battery cover plate 6 for forming a sealing space between the first chamber and the battery cover plate 6, an inner ring of the first sealing member 4 forms a space for accommodating a boss structure on a back surface of the battery cover plate 6, and a second sealing member is disposed between the second chamber jig 9 and the battery cover plate 6 for forming a sealing space between the second chamber and the battery cover plate 6.

It should be noted that, the two sides of the battery cover plate 6 are a first side and a second side, the second side of the battery cover plate 6 refers to the surface where the pole and the explosion-proof valve are located, the first side of the battery cover plate 6 is a surface opposite to the second side, a boss structure exists on the first side of the battery cover plate 6, and the boss structure is opposite to the back positions of the pole, the explosion-proof valve and the liquid injection hole, and sealing elements cannot be arranged at the back positions of the pole, the explosion-proof valve and the liquid injection hole. When the helium is required to be detected on the battery cover plate 6, the battery cover plate 6 is placed corresponding to the first sealing piece 4 and the second sealing piece, and then the power source (a hydraulic cylinder, an air cylinder, an electric cylinder, a linear motor and the like) drives the first chamber jig 2 and the second chamber jig 9 to move close to each other, so that the first sealing piece 4 and the second sealing piece are compressed, double-sided sealing of the battery cover plate 6 is completed, one of the first chamber and the second chamber can be directly connected with a helium source, helium can be conveyed to one of the first chamber and the second chamber, the other can be connected with the helium detector to carry out micro-leakage detection, after the detection is carried out for many times, even if one surface of the battery cover plate 6 corresponds to the sealing piece, the sealing piece corresponding to the other surface can ensure the sealing performance due to metal dust, thereby prolonging the sealing effect, effectively reducing the error discharge rate, reducing the shutdown frequency and the maintenance difficulty and improving the productivity.

It should be noted that, there may be a too small space between the edge of the battery cover plate 6 and the boss structure, for example, the space between the edge of the battery cover plate 6 and the boss structure is smaller than 0.6mm, the sealing difficulty is relatively high, in order to ensure the sealing reliability, the first sealing member 4 preferably adopts a rectangular sealing ring (the cross section is a rectangular sealing ring), the sealing area is increased by surface-to-surface contact, and the space between the inner ring of the first sealing member 4 and the edge of the battery cover plate 6 is preferably set at 0.5-0.55 mm.

Specifically, referring to fig. 2, the second sealing member is composed of a plurality of sealing rings, including a post sealing ring 14 for arranging corresponding to a post on the battery cover plate 6, an explosion-proof valve sealing ring 13 for arranging corresponding to an explosion-proof valve on the battery cover plate 6, and a liquid-filling hole sealing ring 19 for arranging corresponding to a liquid-filling hole on the battery cover plate 6, when the second chamber jig 9 is pressed down on the second side surface of the battery cover plate 6, a post welding seam is in the ring of the post sealing ring 14, an explosion-proof valve welding seam is in the ring of the explosion-proof valve sealing member 13, and a liquid-filling hole welding seam is in the ring of the liquid-filling hole sealing ring 19, so that the post, the explosion-proof valve and the liquid-filling hole on the second side surface of the battery cover plate 6 are respectively sealed, and each formed sealing space is respectively communicated with the second chamber, so that the helium detector can be connected for detection. Preferably, a layer of sealing ring can be further arranged between the second cavity jig 9 and the second side surface of the battery cover plate 6, and the post sealing ring 14, the explosion-proof valve sealing ring 13 and the liquid injection hole sealing ring 19 are all positioned in the sealing ring, so that three layers of sealing are formed by matching with the first sealing ring 4, and the sealing effect is further prolonged.

As a specific embodiment of the present utility model, referring to fig. 1, 2, 4 and 5, the helium test sealing mechanism of the present utility model further includes a sealing member cover plate 3 located between the first chamber fixture 2 and the second chamber fixture 9, where the sealing member cover plate 3 is pressed on the first sealing member 4 and connected with the first chamber fixture 2, so as to fix the first sealing member 4, avoid the change of the relative positions of the first sealing member 4 and the first chamber fixture 2, and influence the sealing effect, and the sealing member cover plate 3 is formed with a through slot for accommodating the battery cover plate 6, so as to facilitate the assembly of the battery cover plate 6.

Referring to fig. 2 and 5, a limiting block 20 for laterally positioning the battery cover plate 6 is formed on the side wall of the through groove, when helium detection is performed on the battery cover plate 6, the battery cover plate 6 can be placed in the through groove first, and the limiting blocks 20 corresponding to different positions of the side part of the battery cover plate 6 are mutually matched, so that the battery cover plate 6 can be laterally positioned, and when the battery cover plate 6 is pressed on the first sealing member 4, dislocation cannot occur, and the sealing effect is ensured.

As a specific embodiment, referring to fig. 2 and 5, the edge of the limiting block is an arc edge, the arc edge can guide the battery cover plate 6, and when the battery cover plate 6 is placed in the through groove of the sealing member cover plate 3, the arc edge can guide the side part of the battery cover plate 6, so that the unevenness of the battery cover plate 6 during assembly can be avoided, and the crush injury rate of the battery cover plate 6 is effectively reduced.

As a specific embodiment, referring to fig. 2 and 5, the sealing device further comprises a sealing element locating pin 7 and/or a gland locating pin 8, wherein a pin hole is formed on the first sealing element 4 corresponding to the sealing element locating pin 7, so that the first sealing element 4 is located and installed on the first chamber jig 2 through the sealing element locating pin 7, and the first sealing element 4 can deform inwards after being pressed during helium detection, due to the existence of the sealing element locating pin 7, the inward deformation amount of the sealing element locating pin 7 can be reduced, the risk that the inward deformation of the first sealing element 4 clamps a boss structure on the second side surface of the battery cover plate 6 is reduced, after the first sealing element 4 is located, the sealing element cover plate 3 is located and installed on the first chamber jig 2 through the gland locating pin 8, and particularly the sealing element cover plate 3 and the first chamber jig 2 can be fixed through screws, so that the sealing element cover plate 3 is pressed on the first sealing element 4, and the relative positions among the sealing element cover plate 3, the first sealing element 4 and the second chamber jig 2 are confirmed.

As a specific embodiment, referring to fig. 1 to 3, the first chamber jig 2 is mounted on the mounting plate 1, the guide post 5 is provided on the mounting plate 1, and the second chamber jig 9 is provided with a bush slidably fitted with the guide post 5 so that the second chamber jig 9 moves in the up-down direction with respect to the first chamber jig 2. The quantity of guide post 5 can set up a plurality ofly, as shown in fig. 1, be provided with two guide post 5 on mounting panel 1, and be located the both ends of mounting panel 1 respectively, be provided with bush one 10 and bush two 11 on second cavity tool 9 correspondingly, through with guide post 5 suit in the bush for can only follow the axial (upper and lower direction) removal of guide post 5 between first cavity tool 2 and the second cavity tool 9 two, avoid the sealing member dislocation in-process that compresses tightly between first cavity tool 2 and second cavity tool 9 and the battery apron 6, ensure sealed effect.

It should be noted that, after the helium is detected, the first side and the second side of the battery cover plate 6 will be adhered to the corresponding sealing members, and in the process of blanking the battery cover plate 6, if the second side of the battery cover plate is not completely separated from the second sealing member, the battery cover plate 6 will be damaged, and in order to avoid the risk, the second chamber jig 9 is provided with an elastic reset member, which is used to abut against the battery cover plate 6, so as to provide an elastic force for driving the battery cover plate 6 to move away from the second chamber jig 9, thereby making the battery cover plate 6 separate from the second chamber jig 9. Specifically, the elastic restoring member includes a compression spring 17, where the compression spring 17 is disposed in the second chamber, and the compression spring 17 is used to abut against the post of the battery cover 6.

Further, the compression spring 17 is used for propping against the terminal post one end of the battery cover plate 6 and is provided with the anti-sticking plunger 15, the anti-sticking plunger 15 is contacted with the battery cover plate 6, adhesion is avoided, the second chamber jig 9 is provided with a guide hole for the anti-sticking plunger 15 to slide, the compression spring 17 is sleeved in the guide hole, one end of the compression spring 17, which is far away from the anti-sticking plunger 15, is provided with a clamp spring 18 which is clamped in the guide hole, the clamp spring 18 is preferably a C-shaped clamp spring, one end of the compression spring 17 is fixed through the clamp spring 18, so that the compression spring 17 conveniently exerts elasticity on the anti-sticking plunger 15, the anti-sticking plunger 15 downwards pushes against the battery cover plate 6, a through hole which is communicated with the guide hole is formed in the middle of the anti-sticking plunger 15, the guide hole is positioned in the second chamber, namely, a space formed between the anti-sticking plunger 15 and the battery cover plate 6 is communicated with the second chamber, and when a tiny leak hole appears at the position of the battery cover plate 6, the tiny leak hole can flow to the second chamber through the through hole so as to be detected by the helium detector. In addition, referring to fig. 4 and 6, the anti-sticking plunger 15 is preferably arranged corresponding to the pole, and the structural strength of the pole is high, so that the battery cover plate 6 can be prevented from being deformed and damaged due to the fact that the anti-sticking plunger 15 pushes against other places.

In addition, referring to fig. 1, 3 and 4, the side of the second chamber jig 9 away from the battery cover plate 6 is used for installing a helium detector for detection, and in order to ensure the accuracy of the detection result of the helium detector, a helium detection seal ring 16 is provided on the side of the second chamber jig 9 away from the battery cover plate 6 to form a seal between the helium detector and the second chamber.

In order to better understand the technical solution of the airtight detection sealing mechanism of the present utility model, the working principle thereof is described below in connection with relatively preferred technical features.

Referring to fig. 1 to 6, the airtight detection sealing mechanism of the present utility model includes a first chamber fixture 2 and a second chamber fixture 9, the first sealing member 4 is positioned by the sealing member cover plate 3, so as to avoid dislocation among the first sealing member 4, the sealing member cover plate 3 and the first chamber fixture 2, the battery cover plate 6 to be detected can be precisely pressed on the first sealing member 4 under the lateral positioning of the limiting block of the sealing member cover plate 3, and the boss structure of the first side surface of the battery cover plate 6 is exactly placed in the inner ring space of the first sealing member 4, thereby the first side surface of the battery cover plate 6 is integrally sealed by the first sealing member 4, and the second chamber fixture 9 is matched with the guide post 5 by the bushing, so that the power source drives the first chamber fixture 2 and the second chamber fixture 9 to move close to each other, in order to clamp the middle battery cover plate 6, the pole sealing piece 14, the explosion-proof valve sealing piece 13 and the liquid injection hole sealing piece 19 on the second cavity jig 9 are respectively opposite to the pole welding seam, the explosion-proof valve welding seam and the liquid injection hole welding seam of the second side face of the battery cover plate 6, so that the sealing between the second side face of the battery cover plate 6 and the second cavity is ensured, helium is filled into the first cavity under the condition that the two faces of the battery cover plate 6 are sealed in place, and the second cavity is connected with a helium detector, so that micro-leakage detection is carried out on the battery cover plate 6. In addition, after the helium of battery apron 6 examines and finishes, in the separation process of first cavity tool 2 and second cavity tool 9, antiseized plunger 15 can be down under compression spring 17's elasticity effect top battery apron 6's utmost point post part for battery apron 6 can break away from with second cavity tool 9, effectively reduces battery apron 6 and does not break away from the sealing member, causes the risk of battery apron 6 crush injury.

The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present utility model within the scope of the technical concept of the present utility model, and all the simple modifications belong to the protection scope of the present utility model.

In addition, the specific features described in the above embodiments may be combined in any suitable manner without contradiction. The various possible combinations of the utility model are not described in detail in order to avoid unnecessary repetition.

Moreover, any combination of the various embodiments of the utility model can be made without departing from the spirit of the utility model, which should also be considered as disclosed herein.

Claims (9)

1. The utility model provides a airtight detection sealing mechanism which characterized in that, includes first sealing member (4) and second sealing member, first sealing member (4) with the second sealing member is used for setting up respectively in the both sides of waiting to examine the piece, in order to form the sealed space of waiting to examine the piece both sides, sealed space is used for supplying the detection gas to fill and carries out sealed detection.

2. The airtight detection sealing mechanism according to claim 1, further comprising a first chamber jig (2) and a second chamber jig (9), wherein the first chamber jig (2) and the second chamber jig (9) are arranged on two sides of the to-be-detected piece respectively so as to clamp the to-be-detected piece, a first chamber is arranged on one side, close to the to-be-detected piece, of the first chamber jig (2), a second chamber is arranged on one side, close to the to-be-detected piece, of the second chamber jig (9), and the first sealing piece (4) is arranged between the first chamber jig (2) and the to-be-detected piece so as to form the sealing space between the first chamber and the to-be-detected piece, and a second sealing piece is arranged between the second chamber jig (9) and the to-be-detected piece so as to form the sealing space between the second chamber and the to-be-detected piece.

3. The airtight detection sealing mechanism according to claim 2, wherein the member to be detected is a battery cover plate (6), two sides of the battery cover plate (6) are respectively a first side surface and a second side surface, the first side surface is a surface where a boss structure on the battery cover plate (6) is located, the first sealing member (4) is arranged between the first chamber jig (2) and the first side surface, the first sealing member (4) is formed with an inner ring for accommodating a boss structure on the battery cover plate (6), and the second sealing member is arranged between the second chamber jig (9) and the second side surface.

4. A gas tightness detection seal mechanism according to claim 3 wherein said second seal comprises:

A pole seal ring (14), wherein the pole seal ring (14) is used for being arranged corresponding to a pole on the battery cover plate (6), and/or

An explosion-proof valve sealing ring (13), wherein the explosion-proof valve sealing ring (13) is used for being arranged corresponding to an explosion-proof valve on the battery cover plate (6), and/or

And the liquid injection hole sealing ring (19), wherein the liquid injection hole sealing ring (19) is used for being arranged corresponding to the liquid injection hole on the battery cover plate (6).

5. A gas tightness detection sealing mechanism according to claim 3, further comprising a sealing member cover plate (3), wherein the sealing member cover plate (3) is arranged on the first sealing member (4) and is connected with the first chamber jig (2), and the sealing member cover plate (3) is formed with a through groove for accommodating the battery cover plate (6).

6. The airtight detection sealing mechanism according to claim 5, wherein the through groove is formed with a stopper (20), the stopper (20) being for laterally positioning the battery cover plate (6).

7. The airtight detection sealing mechanism according to claim 5, further comprising a seal positioning pin (7) and/or a gland positioning pin (8), the seal positioning pin (7) being disposed between the first seal (4) and the first chamber jig (2) to form a positioning, the gland positioning pin (8) being disposed between the seal cover plate (3) and the first chamber jig (2) to form a positioning.

8. The airtight detection sealing mechanism according to claim 2, wherein the first chamber jig (2) comprises a mounting plate (1), a guide post (5) is provided on the mounting plate (1), and the second chamber jig (9) is provided with a guide sleeve for sliding fit with the guide post (5).

9. A gas tightness detection sealing mechanism according to claim 3, characterized in that the second chamber fixture (9) is provided with an elastic return for mounting on the battery cover plate (6) to provide a force for moving the battery cover plate (6) away from the second chamber fixture (9).