CN212658386U - Airtight detection frock of battery case and explosion-proof valve junction - Google Patents
Airtight detection frock of battery case and explosion-proof valve junction Download PDFInfo
- Publication number
- CN212658386U CN212658386U CN202120142538.1U CN202120142538U CN212658386U CN 212658386 U CN212658386 U CN 212658386U CN 202120142538 U CN202120142538 U CN 202120142538U CN 212658386 U CN212658386 U CN 212658386U
- Authority
- CN
- China
- Prior art keywords
- hole
- cylinder
- shell
- piston
- explosion
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Gas Exhaust Devices For Batteries (AREA)
Abstract
The utility model provides an air tightness detection tool for the joint of a battery case and an explosion-proof valve, which is used for detecting whether leakage exists at the sealed joint between the installation bottom surface of the explosion-proof valve and the battery case below the explosion-proof valve; the device comprises an upper shell, a lower surrounding body, an upper cylinder plate, an upper piston, a side cylinder barrel, a connecting plate, a side piston and a sealing joint; the upper cover of the explosion-proof valve is compressed when the upper cylinder plate and the upper piston are used for testing, and the side cylinder barrel, the side piston and the sealing joint are used for sealing and butting the waterproof air holes in the side part of the explosion-proof valve when the side cylinder barrel, the side piston and the sealing joint are used for testing, and filling trace gas. The utility model discloses small and exquisite practicality can a plurality of frocks test simultaneously, promotes airtight efficiency of software testing greatly, save time.
Description
Technical Field
The utility model belongs to airtight check out test set field especially relates to an airtight detection frock whether there is leakage in junction of battery case and explosion-proof valve.
Background
The battery case is one of important parts of a new energy automobile, is generally installed at the bottom of the new energy automobile and is often contacted with substances such as moisture, and the safety performance of the automobile is directly determined by the quality of the air tightness. The explosion-proof valve is an important part for determining the safety performance of the battery case, so that the test of the air tightness of the connection part of the explosion-proof valve and the battery case is particularly important. How to simply, reliably, rapidly and accurately test the air tightness of the joint becomes a key point in the field.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides an airtight frock that detects of battery case and explosion-proof valve junction specifically is:
the device comprises an upper shell, a lower surrounding body, an upper cylinder plate, an upper piston, a side cylinder barrel, a connecting plate, a side piston and a sealing joint;
the upper shell encloses an accommodating cavity with a lower inlet; the lower surrounding body is made of the same material as the sealing rubber ring and is sleeved at the lower end of the upper shell;
the upper cylinder plate is fixedly connected to the upper end face of the upper shell in a sealing manner, the upper shell is provided with a shell upper through hole of which the lower end opening is over against the upper cover of the explosion-proof valve, the upper cylinder plate is provided with a cylinder groove of which the notch is over against the shell upper through hole, and the lower part of the upper piston is connected to the shell upper through hole in a sealing and sliding manner; the upper part of the upper piston is arranged in the cylinder groove, and the top end of the upper piston is provided with an annular retaining shoulder with the outer diameter larger than the diameter of the through hole on the shell;
the upper cylinder plate is also provided with an upper cylinder inflation hole communicated with the cylinder groove;
a shell side through hole is formed in the side part of the upper shell corresponding to the waterproof vent hole of the explosion-proof valve;
one side surface of the connecting plate is fixedly connected with the upper shell in a sealing way and covers the through hole on the side of the shell, and the other side surface of the connecting plate is fixedly connected with the opening end of the side cylinder barrel in a sealing way;
a piston disc of the lateral piston is arranged in a cylinder hole of the lateral cylinder and is in sliding seal with the cylinder hole, and a piston connecting pipe extends out of the cylinder of the lateral cylinder through a cylinder bottom through hole of the lateral cylinder and is in sliding seal connection with the cylinder bottom through hole;
the piston disc is coaxially and fixedly connected with the tail part of a connecting pipe of the sealing joint, the connecting pipe penetrates through a through hole formed in the center of the connecting plate and is in sealing sliding connection with the connecting pipe, a plugging ring of the sealing joint is arranged in a through hole on the side of the shell, a plugging rubber ring is fixedly connected to the front end face of the plugging ring, the piston on the side part and the sealing joint are provided with a piston through hole and a joint through hole which are coaxially communicated, and corresponding openings of the joint through holes are opposite to the waterproof ventilating; a side cylinder inflation hole is formed in the cylinder wall between the piston disc and the cylinder bottom of the side cylinder, and a side cylinder exhaust hole is formed in the cylinder wall between the piston disc and the connecting plate;
the upper shell is also provided with a shell air inlet and a shell air exhaust hole which are used for extracting the gas in the gap between the explosion-proof valve and the upper shell.
The cylinder groove and the through hole on the shell are coaxial, and the diameter of the groove hole of the cylinder groove is larger than that of the through hole on the shell.
The top end face of the upper piston is also provided with a flat round notch, the annular blocking shoulder is also symmetrically provided with two longitudinal communication holes, the lower end orifice of each longitudinal communication hole is arranged on the lower end face of the annular blocking shoulder, and the upper end orifice is communicated with the flat round notch.
The bottom of the oblate notch is also provided with a transverse long groove, and two ends of the transverse long groove are respectively communicated with the upper end orifice of each longitudinal communicating hole.
The utility model discloses small and exquisite practicality can a plurality of frocks test simultaneously, promotes airtight efficiency of software testing greatly, save time.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a perspective view of the present invention;
fig. 2 is a schematic perspective view of the present invention from another angle;
fig. 3 is a cross-sectional view of the present invention;
FIG. 4 is an enlarged view of portion A of FIG. 3;
fig. 5 is a perspective view of the upper piston.
In the figure:
an upper case 1; a housing chamber 11; a housing upper through hole 12; a housing side through hole 13; a housing air intake hole 14; a housing extraction hole 15; a first seal rubber ring 121;
an upper cylinder plate 2; a cylinder groove 21; an upper cylinder inflation port 22;
an upper piston 3; an oblate notch 31; a transverse elongated slot 311; an annular shoulder 32; a longitudinal communication hole 321;
a connecting plate 4;
a side cylinder barrel 5; a cylindrical bore 51; side cylinder inflation ports 52; side cylinder exhaust ports 53; a barrel bottom through hole 54;
a sealing joint 6; a plugging ring 61; a connecting pipe 62; a plugging rubber ring 611; a joint through hole 63;
a side piston 7; a piston disc 71; a piston connection pipe 72; a piston through hole 73;
a trace gas connection 8;
an explosion-proof valve 9; an upper cover 91; waterproof breather holes 92; a mounting bottom surface 93;
a lower enclosure 10.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
The utility model discloses an airtight frock that detects of battery case and explosion-proof valve junction, for convenient description, hereinafter be referred to as "this frock".
Referring to fig. 3, the explosion-proof valve 9 generally has an upper cover 91 at the top and waterproof airing holes 92 at the side, and a mounting bottom surface 93 at the bottom.
It should be noted that, for convenience of illustration, a battery case connected to the explosion-proof valve 9 is not shown in the figures, the explosion-proof valve 9 is connected to the battery case in a sealing manner through a mounting bottom surface 93, an internal cavity of the battery case is communicated with a through hole of the explosion-proof valve 9 through a corresponding through hole of the battery case, and the battery case is sealed with the mounting bottom surface 93 of the explosion-proof valve 9 through a sealing rubber ring (not shown in the figures).
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in the figure, the tool comprises an upper shell 1, a lower surrounding body 10, an upper cylinder plate 2, an upper piston 3, a side cylinder 5, a side piston 7 and a sealing joint 6;
the upper cylinder plate 2 and the upper piston 3 are used for pressing the upper cover 91 of the explosion-proof valve 9 during testing. The upper cylinder plate 2 is tightly connected to the upper end face of the upper shell 1 in a sealing manner through bolts, the upper shell 1 is provided with a shell upper through hole 12 of which the lower end opening is just opposite to the upper cover 91 of the explosion-proof valve 9, the upper cylinder plate 2 is provided with a cylinder groove 21 of which the notch is just opposite to the shell upper through hole 12, the cylinder groove 21 and the shell upper through hole 12 are coaxial, the diameter of a groove hole of the cylinder groove 21 is larger than that of the shell upper through hole 12, the lower part of the upper piston 3 is connected to the shell upper through hole 12 in a sealing and sliding manner, and the first sealing rubber ring 121 is used for ensuring the sliding sealing between the upper piston 3; the upper part of the upper piston 3 is arranged in the cylinder groove 21, and the top end of the upper piston is provided with an annular retaining shoulder 32 with the outer diameter larger than the diameter of the hole 12 of the upper through hole of the shell, so that the upper piston 3 is prevented from falling out of the cylinder groove 21 downwards through the limit formed by the annular retaining shoulder 32 and the opening at the upper end of the upper through hole 12 of the shell of the upper shell;
the upper cylinder plate 2 is also provided with an upper cylinder inflation hole 22 communicated with the cylinder groove 21, compressed air is inflated into the cylinder groove 21 through the upper cylinder inflation hole 22, and because the air pressure in the cylinder groove 21 is greater than the air pressure in the space below the lower end of the upper piston 3 of the shell through hole 12, the upper piston 3 is extended downwards, and the lower end of the upper piston is abutted against the upper cover 91 of the explosion-proof valve 9 to realize the compression of the upper piston.
Preferably, in order to improve the reaction speed and efficiency of the upper piston 3 during inflation, as shown in fig. 5, the top end face of the upper piston 3 is further provided with an oblate notch 31, the annular shoulder 32 is further symmetrically provided with two longitudinal communication holes 321, a lower end orifice of each longitudinal communication hole 321 is arranged on the lower end face of the annular shoulder 32, and an upper end orifice is communicated with the oblate notch 31, so that gas can rapidly enter the oblate notch 31 between the upper end face of the upper piston 3 and the bottom wall of the upper end groove of the cylinder groove 21 through the longitudinal communication holes 321 during inflation, and the reaction speed of the upper piston 3 pressing down under differential pressure is accelerated; further, a transverse long groove 311 is formed at the bottom of the oblate notch 31, and two ends of the transverse long groove 311 are respectively communicated with the upper end orifice of each longitudinal communication hole 321, so that the speed of filling the gas into the oblate notch 31 is further increased.
The side cylinder barrel 5, the side piston 7 and the sealing joint 6 are used for sealing and butting the waterproof vent hole 92 at the side part of the explosion-proof valve 9 during testing. Wherein, the lateral part of the upper shell 1 is provided with a shell side through hole 13 corresponding to the waterproof vent hole 92, one lateral surface of the connecting plate 4 is hermetically and fixedly connected with the upper shell 1 and covers the shell side through hole 13, the other lateral surface of the connecting plate 4 is hermetically and fixedly connected with the cylinder opening end of the side cylinder 5, the lateral piston 7 comprises a piston disc 71 and a piston connecting pipe 72, the piston disc 71 is arranged in the cylinder hole 51 of the side cylinder 5 and is in sliding seal with the cylinder hole, and the piston connecting pipe 72 extends out of the side cylinder 5 through the cylinder bottom through hole 54 of the side cylinder 5 and is in sliding seal connection with the; the piston disc 71 is fixedly connected with the tail part of a connecting pipe 62 of the sealing joint 6 coaxially, the connecting pipe 62 penetrates through a through hole formed in the center of the connecting plate 4 and is connected with the through hole in a sliding and sealing mode, a plugging ring 61 of the sealing joint 6 is arranged in the through hole 13 on the side of the shell, the front end face of the plugging ring 61 is fixedly connected with a plugging rubber ring 611, the piston 7 on the side part and the sealing joint 6 are provided with a piston through hole 73 and a joint through hole 63 which are communicated coaxially, and the corresponding opening of the joint through hole 63 is opposite to a waterproof air vent 92 on the side; the cylinder wall between the piston disc 71 and the bottom of the side cylinder 5 is also provided with a side cylinder inflation hole 52, and the cylinder wall between the piston disc 71 and the connecting plate 4 is provided with a side cylinder exhaust hole 53.
The trace gas joint 8 is in threaded butt joint with one end of the piston connecting pipe 72 of the side piston 7, which extends out of the cylinder.
An accommodating cavity with a lower inlet is formed by the upper shell 1 in a surrounding manner, and during detection, the explosion-proof valve 9 is arranged in the accommodating cavity from the lower inlet; the lower enclosing body 10 is made of the same material as the sealing rubber ring, is sleeved at the lower end of the upper shell 1 and is used for completely enclosing the bottom of the explosion-proof valve 9.
The upper shell 1 is also provided with a shell air inlet hole 14 and a shell air exhaust hole 15 which are used for extracting air in a gap between the explosion-proof valve 9 and the upper shell 1 and the lower enclosing body 10.
As shown in the figure, after the explosion-proof valve 9 is arranged in the upper shell 1, compressed air is filled into the cylinder groove 21 through the upper cylinder inflation hole 22, the upper piston 3 is extended downwards, and the lower end of the upper piston is propped against the upper cover 91 of the explosion-proof valve 9 to realize the compaction of the upper piston; on the other hand, the compressed air is filled into the cylinder cavity on the right side of the piston disc 71 through the side cylinder inflation hole 52 to push the piston disc 71 to move leftwards, and the side cylinder exhaust hole 53 is used for exhausting the air in the cylinder cavity on the left side of the piston disc 71 so as to facilitate the movement of the piston disc 71; the piston disc 71 drives the sealing joint 6 to move left, the joint through hole 63 of the plugging ring 61 is in butt joint with the waterproof vent hole 92 of the explosion-proof valve 9, the sealing of the butt joint is ensured by the plugging rubber ring 611, the tracer gas enters the explosion-proof valve 9 and the sealing cavity inside the battery case through the tracer gas joint 8, the piston through hole 73, the joint through hole 63 and the waterproof vent hole 92, if the leakage exists at the sealing joint between the installation bottom surface 93 of the explosion-proof valve 9 and the battery case (not shown) below, the leaked tracer gas is gathered by the lower surrounding body 10 and collected into the gap between the explosion-proof valve 9 and the upper case, the gas in the gap can be collected and extracted through the cooperation of the case air inlet hole 14 and the case air exhaust hole 15, the leakage amount of the tested object is calculated by utilizing tracer gas leak detectors such as nitrogen and hydrogen, and the leakage condition of the explosion-proof valve is obtained.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. The airtight detection tool for the joint of the battery shell and the explosion-proof valve is characterized by comprising an upper shell (1), a lower surrounding body (10), an upper cylinder plate (2), an upper piston (3), a side cylinder (5), a connecting plate (4), a side piston (7) and a sealing joint (6);
the upper shell (1) encloses a containing cavity with a lower inlet; the lower surrounding body (10) is made of the same material as the sealing rubber ring and is sleeved at the lower end of the upper shell (1);
the upper cylinder plate (2) is fixedly connected to the upper end face of the upper shell (1) in a sealing mode, the upper shell (1) is provided with an upper shell through hole (12) with an opening at the lower end facing the upper cover of the explosion-proof valve, the upper cylinder plate (2) is provided with a cylinder groove (21) with a notch facing the opening at the upper end of the upper shell through hole (12), and the lower portion of the upper piston (3) is connected to the upper shell through hole (12) in a sealing and sliding mode; the upper part of the upper piston (3) is arranged in the cylinder groove (21), and the top end of the upper piston is provided with an annular retaining shoulder (32) with the outer diameter larger than the diameter of the through hole (12) on the shell;
the upper cylinder plate (2) is also provided with an upper cylinder inflation hole (22) communicated with the cylinder groove (21);
a shell side through hole (13) is formed in the side part of the upper shell (1) corresponding to the waterproof vent hole of the explosion-proof valve;
one side surface of the connecting plate (4) is fixedly connected with the upper shell (1) in a sealing way and covers the through hole (13) on the side of the shell, and the other side surface is fixedly connected with the opening end of the side cylinder barrel (5) in a sealing way;
a piston disc (71) of the side piston (7) is arranged in a cylinder hole of the side cylinder and is in sliding seal with the cylinder hole, and a piston connecting pipe (72) extends out of the side cylinder (5) through a cylinder bottom through hole (54) of the side cylinder (5) and is in sliding seal connection with the cylinder bottom through hole (54);
the piston disc (71) is coaxially and fixedly connected with the tail of a connecting pipe (62) of the sealing joint (6), the connecting pipe (62) penetrates through a through hole formed in the center of the connecting plate (4) and is in sealing sliding connection with the through hole, a plugging ring (61) of the sealing joint (6) is arranged in a through hole (13) on the side of the shell, a plugging rubber ring (611) is fixedly connected with the front end face of the plugging ring (61), a piston through hole (73) and a joint through hole (63) which are coaxially communicated are formed in the side piston (7) and the sealing joint (6), and the corresponding opening of the joint through hole (63) is opposite to the waterproof vent hole (92); a side cylinder inflation hole (52) is formed in the cylinder wall between the piston disc (71) and the cylinder bottom of the side cylinder (5), and a side cylinder exhaust hole (53) is formed in the cylinder wall between the piston disc (71) and the connecting plate (4);
the upper shell (1) is also provided with a shell air inlet (14) and a shell air exhaust hole (15) which are used for extracting the gas in the gap between the explosion-proof valve (9) and the upper shell (1).
2. The airtightness detection tool for the joint between the battery shell and the explosion-proof valve according to claim 1, wherein the cylinder groove (21) and the through hole (12) in the shell are coaxial, and the diameter of the slotted hole of the cylinder groove (21) is larger than that of the through hole (12) in the shell.
3. The airtightness detection tool for the joint between the battery shell and the explosion-proof valve according to claim 1, wherein the top end face of the upper piston (3) is further provided with a flat round notch (31), the annular retaining shoulder (32) is further symmetrically provided with two longitudinal communication holes (321), the lower end orifice of each longitudinal communication hole (321) is arranged on the lower end face of the annular retaining shoulder (32), and the upper end orifice is communicated with the flat round notch (31).
4. The airtight detection tool for the joint of the battery shell and the explosion-proof valve as claimed in claim 3, wherein a transverse long groove (311) is further formed at the bottom of the oblate notch (31), and two ends of the transverse long groove (311) are respectively communicated with the upper end orifice of each longitudinal communication hole (321).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120142538.1U CN212658386U (en) | 2021-01-20 | 2021-01-20 | Airtight detection frock of battery case and explosion-proof valve junction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120142538.1U CN212658386U (en) | 2021-01-20 | 2021-01-20 | Airtight detection frock of battery case and explosion-proof valve junction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212658386U true CN212658386U (en) | 2021-03-05 |
Family
ID=74762022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120142538.1U Active CN212658386U (en) | 2021-01-20 | 2021-01-20 | Airtight detection frock of battery case and explosion-proof valve junction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212658386U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114061870A (en) * | 2021-11-22 | 2022-02-18 | 芜湖云汉动力新能源科技有限公司 | New energy battery pack sealing self-checking system and method |
-
2021
- 2021-01-20 CN CN202120142538.1U patent/CN212658386U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114061870A (en) * | 2021-11-22 | 2022-02-18 | 芜湖云汉动力新能源科技有限公司 | New energy battery pack sealing self-checking system and method |
| CN114061870B (en) * | 2021-11-22 | 2024-02-02 | 芜湖云汉动力新能源科技有限公司 | New energy battery pack tightness self-checking system and self-checking method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110082036B (en) | Pipe body flange weld seam air tightness detection device | |
| CN212658386U (en) | Airtight detection frock of battery case and explosion-proof valve junction | |
| CN219474893U (en) | Water pump tightness detection device | |
| CN216524602U (en) | Airtightness detection device and airtightness detection device for single battery | |
| CN218066938U (en) | Airtightness detection tool for battery box body of new energy automobile | |
| CN115013617B (en) | Get gas connector | |
| CN214667632U (en) | Valve membrane opening rate detects frock | |
| CN216695450U (en) | Battery pack shell leakage detection device | |
| CN115508959A (en) | Packaging process, sealing device and testing mechanism for ROSA air tightness packaging | |
| CN107123830B (en) | High-tightness battery cell leakage detection device and leakage detection method thereof | |
| CN115127737A (en) | Tightness detection device | |
| CN213236505U (en) | Sealing installation device of oil gun adapter for oil gas recovery detection | |
| CN209326911U (en) | Battery pack air-leakage test connector | |
| CN212179159U (en) | Inflatable cap | |
| CN209214860U (en) | A kind of severe hybrid power electric motor of automobile shell hermetic seal test device | |
| CN210426950U (en) | Portable flow resistance testing arrangement | |
| CN112611527A (en) | Battery leakage detection device and method | |
| CN217375676U (en) | Drying agent replacing device and packaging box | |
| CN209961264U (en) | Compact micro-water density detection device | |
| CN109632194A (en) | A kind of motor vehicle lamp air tightness detection equipment | |
| CN216746585U (en) | Steering wheel casing gas tightness and axiality detection device | |
| CN216593950U (en) | Pressure sensor | |
| CN217237129U (en) | Security protection lamp body gas tightness test fixture | |
| CN217687701U (en) | Tightness detection device | |
| CN212513492U (en) | Airtight detection frock of high-pressure connector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |