CN107167287B - Air tightness detection device of battery collet - Google Patents
Air tightness detection device of battery collet Download PDFInfo
- Publication number
- CN107167287B CN107167287B CN201710629144.7A CN201710629144A CN107167287B CN 107167287 B CN107167287 B CN 107167287B CN 201710629144 A CN201710629144 A CN 201710629144A CN 107167287 B CN107167287 B CN 107167287B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
- G01M3/202—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material using mass spectrometer detection systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Sealing Battery Cases Or Jackets (AREA)
Abstract
The invention discloses an air tightness detection device of a battery holder, which comprises a workbench, wherein a sealing mechanism, a bearing mechanism and a limiting mechanism are arranged on the workbench; the bearing mechanism is positioned at four corners of the sealing mechanism, and the limiting mechanism is positioned at the front end and the rear end of the sealing mechanism; the sealing mechanism comprises a frame structure, a floating layer surrounded in the middle by the frame structure and a plurality of jacking cylinders positioned below the frame structure and fixed on the workbench, the frame structure comprises a bottom plate layer and a sealing layer fixed on the bottom plate layer, the floating layer is fixedly connected with the bottom plate layer, and the sealing layer is a sandwich layer containing a flexible layer; the bearing mechanism places the workpiece to be detected which is supported by the bearing mechanism on the sealing mechanism, and the limiting mechanism is clamped on the workpiece to be detected to limit the upward movement of the workpiece to be detected. The battery shoe air tightness detection device can solve the problem that tightness is difficult to detect due to the fact that a workpiece to be detected is large in size, difficult to seal, deformed after welding and the like.
Description
Technical Field
The invention relates to an air tightness detection device of a battery bracket, and belongs to the technical field of air tightness detection devices.
Background
At present, the new energy automobile industry rapidly develops, the yield and the variety of battery packs are more and more, the battery bottom support is the most critical component for bearing and protecting the battery, the sealing performance of the battery bottom support determines the use safety performance and the service life of the battery, and at present, the battery bottom support has serious potential safety hazards due to the fact that the battery bottom support is large in appearance, complex in shape, more in welding bead, serious deformation after welding and other reasons, the airtight seal of the battery bottom support cannot be detected after welding, and the battery bottom support is put into use without being precisely or unreasonably detected, so that the service life of the battery is also reduced. Therefore, development of an air tightness detecting device of a battery holder is necessary.
Disclosure of Invention
The invention aims to: the invention aims to solve the technical problem of providing an air tightness detection device of a battery holder, which can solve the problem that the air tightness is difficult to detect due to the reasons of large size, difficult sealing, post-welding deformation and the like of a workpiece to be detected.
The invention comprises the following steps: in order to solve the technical problems, the invention adopts the following technical means:
the air tightness detection device of the battery collet comprises a workbench, wherein a sealing mechanism, a bearing mechanism and a limiting mechanism are arranged on the workbench; the bearing mechanism is positioned at four corners of the sealing mechanism, and the limiting mechanisms are positioned at the front end and the rear end of the sealing mechanism; the sealing mechanism comprises a frame structure, a floating layer surrounding the frame structure in the middle, and a plurality of jacking cylinders positioned below the frame structure and fixed on the workbench, wherein the frame structure comprises a bottom plate layer and a sealing layer fixed on the bottom plate layer, the floating layer is fixedly connected with the bottom plate layer, and the sealing layer is a sandwich layer containing a flexible layer; the bearing mechanism is used for placing the workpiece to be detected which is borne by the bearing mechanism on the sealing mechanism, and the limiting mechanism is clamped on the workpiece to be detected to limit the upward movement of the workpiece to be detected; the middle of the floating layer is provided with a plurality of filling parts, so that the enclosed space enclosed by the sealing mechanism and the workpiece to be detected is reduced, and helium gas required to be filled into the enclosed space during detection is reduced; the floating layer has good elastic sealing performance, and is favorable for better sealing and fitting of the sealing layer and the workpiece to be detected.
The sealing layer is formed by sandwiching a rubber layer between two metal layers, namely, a metal layer, a rubber layer and a metal layer.
Wherein, the bearing mechanism includes locating part, cylinder and bearing spare, and the bearing spare is fixed on the output shaft of cylinder, and the cylinder drives the bearing spare and reciprocates, and the locating part is fixed on the base, and the locating part of every bearing mechanism is unanimous from the planar vertical height of base, and the highest height that the locating part restriction bearing spare upwards moved makes the bearing spare of every bearing mechanism upwards moved be located the coplanar.
The limiting mechanism comprises a guide rail fixed on the base, a moving part sliding back and forth along the guide rail and a power mechanism driving the moving part to move back and forth, wherein the moving part is clamped on a workpiece to be detected, and the upward movement of the workpiece is limited.
The power mechanism comprises a motor and a ball screw fixedly connected with an output shaft of the motor, the ball screw is mutually matched and connected with a sliding sleeve on the moving member, and the sliding sleeve moves forwards or backwards relative to the ball screw along with the rotation of the ball screw, so that the moving member is driven to move forwards or backwards along the guide rail.
The device also comprises a control mechanism for controlling the opening and closing of the cylinder and the motor.
Compared with the prior art, the technical scheme of the invention has the following beneficial effects:
the battery holder air tightness detection device can accurately detect the sealing performance of the battery holder on the basis of not using an actual cover plate of the battery holder; the sealing layer in the device contains a flexible layer (rubber layer) which can well adapt to the problem that the workpiece is difficult to attach and seal after welding deformation, and the reliability of tightness detection is effectively ensured.
Drawings
FIG. 1 is a schematic diagram of a battery tray air tightness detection device according to the present invention;
FIG. 2 is a schematic diagram of a structure in which a workpiece to be inspected is placed on the battery tray air tightness inspection device of the present invention;
FIG. 3 is a schematic diagram of a part I of the battery tray air tightness detection device;
FIG. 4 is a schematic diagram of a part II of the battery tray air tightness detection device of the invention;
FIG. 5 is a schematic diagram of a part III of the battery tray air tightness detection device according to the present invention;
fig. 6 is a schematic structural view of a workpiece to be inspected.
Detailed Description
The present invention will be further described with reference to the drawings and the specific embodiments. It should be understood that these examples are only for illustrating the technical scheme of the present invention and are not intended to limit the scope of the present invention.
As shown in fig. 1 to 6, the air tightness detection device of the battery bracket comprises a workbench 1, wherein a sealing mechanism 24, a bearing mechanism 22 and a limiting mechanism 21 are arranged on the workbench 1; the bearing mechanism 22 is positioned at four corners of the sealing mechanism 24, and the limiting mechanism 21 is positioned at the front end and the rear end of the sealing mechanism 24; the sealing mechanism 24 comprises a frame structure 3, a floating layer 4 surrounding the frame structure 3 in the middle and a plurality of jacking cylinders 5 positioned below the frame structure 3 and fixed on the workbench 1, wherein the frame structure 3 comprises a bottom plate layer 6 and a sealing layer 7 fixed on the bottom plate layer 6, the sealing layer 7 is fixedly connected with the bottom plate layer 6 in a sealing way, the sealing layer 7 is convenient to replace, when the sealing layer 7 is worn easily for a long time, the worn sealing layer 7 can be directly replaced integrally, the floating layer 4 is fixedly connected with the bottom plate layer 6, the sealing layer 7 is a sandwich layer containing a flexible layer, and the sealing layer 7 consists of a metal layer 8, a rubber layer 9 and a metal layer 10; the bearing mechanism 22 places the workpiece 12 to be detected which is borne by the bearing mechanism on the sealing mechanism 24, and the workpiece 12 to be detected is reversely buckled on the sealing mechanism 24 and is enclosed with the sealing mechanism 24 to form a closed cavity; the stopper mechanism 21 is caught on the workpiece 12 to be inspected to restrict upward movement of the workpiece 12 to be inspected. After the workpiece 12 to be detected falls in place, the limiting mechanism 21 is pushed into place to tightly clamp the workpiece 12 to be detected on the sealing mechanism 24.
The supporting mechanism 22 is provided with a detection sensor at the diagonal position to ensure that the workpiece 12 is placed in place, so that the workpiece 12 is not inclined to be clamped when being horizontally lowered in the descending process, the limiting mechanism 21 is also provided with a workpiece detection sensor at the diagonal position, and after the limiting mechanism 21 moves in place, the workpiece detection sensor can detect the workpiece 12 below the limiting mechanism 21, so that the lifting of the lower jacking cylinder 5 in place is ensured to be safe and error-free.
Wherein, the bearing mechanism 22 and the sealing mechanism 24 have a certain vertical height difference, so that the structure of the sealing layer 7 can be prevented from being damaged due to the direct contact of the robot gripper and the sealing layer 7; the bearing mechanisms 22 comprise limiting pieces 13, air cylinders 14 and bearing pieces 15, the bearing pieces 15 are fixed on output shafts of the air cylinders 14, the air cylinders 14 drive the bearing pieces 15 to move upwards or downwards, the limiting pieces 13 are fixed on the base 1, the vertical heights of the limiting pieces 13 of each bearing mechanism 22 from the plane of the base 1 are consistent, the limiting pieces 13 can limit the highest height of the bearing pieces 15 to move upwards, the required highest height of the bearing pieces 15 of each bearing mechanism 22 is located on the same plane, and therefore when the four bearing mechanisms 22 receive the battery bottom support 12 of a to-be-detected workpiece, which is lifted from the grippers, the battery bottom support 12 is placed horizontally and cannot incline with the horizontal plane; the limiting mechanism 21 comprises a guide rail 16 fixed on the base 1, a moving part 17 sliding back and forth along the guide rail 16 and a power mechanism driving the moving part 17 to move back and forth, wherein the moving part 17 is clamped on the workpiece 12 to be detected, and the upward movement of the workpiece 12 to be detected is limited; the power mechanism comprises a motor 18 and a ball screw 19 fixedly connected with an output shaft of the motor 18, the ball screw 19 is mutually matched and connected with a sliding sleeve 20 on the moving member 17, and the sliding sleeve 20 moves forwards or backwards relative to the ball screw 19 along with rotation of the ball screw 19, so that the moving member 17 is driven to move forwards or backwards along the guide rail 16.
The floating layer 4 adopts special rubber, has good elastic sealing performance, is not easy to generate fatigue cracking after being used for multiple times, well solves the problem of small rigid pushing deformation, and is favorable for better sealing and bonding of the sealing layer 7 and the workpiece 12 to be detected; the middle of the floating layer 4 is provided with a plurality of filling parts 11, and because the inner space of the battery holder 12 of the workpiece to be detected is larger, the middle of the floating layer 4 is provided with a plurality of filling parts 11 with light weight and high tightness, so that the enclosed space enclosed by the sealing mechanism 24 and the workpiece 12 to be detected is reduced, the helium gas required to be filled into the enclosed space during detection is reduced, the experiment time is shortened, and the experiment cost is saved. (inert gas is injected for air leakage detection in the experiment). In the test, negative pressure and positive pressure tests are required, the test time is prolonged due to the large volume of the closed space, more inert gas needs to be flushed into the large volume, the cost is wasted, the test time is shortened due to the adoption of special fillers, and the test cost is saved.
The air tightness detection device of the battery bracket also comprises a control mechanism 23 for controlling the opening and closing of the air cylinder and the motor.
The working process of the device comprises the following steps: placing a workpiece in place; pushing the sealing layer to be attached by the tool; the vacuum generator starts to pump negative pressure to 0.02Mpa, and the pressure is maintained for 30 seconds, so that no large leakage is determined; injecting helium into the cavity, and performing leakage helium detection; and (5) ending the detection.
The bearing mechanism 22 receives the to-be-detected workpiece battery holder 12 from the robot gripper, the robot gripper places the to-be-detected workpiece battery holder 12 on the bearing mechanism 22, at the moment, the four bearing members 15 are all positioned at the limiting members 13, so that the tops of the four bearing members 15 are positioned on the same horizontal plane, the air cylinder 14 is started, the air cylinder 14 drives the bearing members 15 to move downwards, and the to-be-detected workpiece battery holder 12 (the sealing position 25) is overlapped with the sealing layer 7 of the sealing mechanism 24; the motor 18 of the power mechanism is started, the ball screw 19 rotates, and the sliding sleeve 20 sleeved outside the ball screw 19 drives the moving part 17 to move forwards along the guide rail 16 until the upper end part of the moving part 17 is clamped on the workpiece 12 to be detected to limit the upward movement of the workpiece 12 to be detected; starting a jacking air cylinder 5, wherein the jacking air cylinder 5 pushes the frame structure 3 to move upwards until the sealing layer 7 is tightly attached to the workpiece 12 to be detected, and a floating layer 4 (outer edge) fixedly connected with a bottom plate layer 6 of the frame structure 3 is stretched along with the upward movement of the frame structure 3, so that the floating layer 4 can avoid being rigidly pulled apart in the force application sealing process due to good elastic sealing performance, and in addition, if the workpiece 12 to be detected has uneven or post-welding deformation at the joint of the workpiece 12 to be detected and the sealing layer 7 with a flexible interlayer 9 can be well attached to the workpiece 12 to be detected in a sealing way; after the sealing layer 7 is sealed and attached with the workpiece 12 to be detected, extracting air in the closed space to form negative pressure (at the moment, the reading of the barometer in the closed space is negative pressure 0.02 Mpa), and after pressure maintaining for 30 seconds, reading the barometer again, wherein if the reading of the barometer is basically unchanged, no large air leakage point is indicated; filling helium into the closed space, and detecting helium leakage by using a helium detector after filling, wherein the helium detector can give an alarm if helium leakage occurs; after the detection is finished, the motor 18 of the power mechanism is started again, the ball screw 19 is reversed, the sliding sleeve 20 sleeved outside the ball screw 19 drives the moving part 17 to move backwards along the guide rail 16, the air cylinder 14 is started again, the air cylinder 14 drives the supporting part 15 to move upwards, the detected workpiece 12 is driven to move upwards, and when the supporting part 15 moves to the position of the limiting part 13, the robot gripper takes away the detected workpiece 12.
Claims (6)
1. The utility model provides a gas tightness detection device of battery collet which characterized in that: the device comprises a workbench, wherein a sealing mechanism, a bearing mechanism and a limiting mechanism are arranged on the workbench; the bearing mechanism is positioned at four corners of the sealing mechanism, and the limiting mechanisms are positioned at the front end and the rear end of the sealing mechanism; the sealing mechanism comprises a frame structure, a floating layer surrounding the frame structure in the middle, and a plurality of jacking cylinders positioned below the frame structure and fixed on the workbench, wherein the frame structure comprises a bottom plate layer and a sealing layer fixed on the bottom plate layer, the floating layer is fixedly connected with the bottom plate layer, and the sealing layer is a sandwich layer containing a flexible layer; the bearing mechanism is used for placing the workpiece to be detected which is borne by the bearing mechanism on the sealing mechanism, and the limiting mechanism is clamped on the workpiece to be detected to limit the upward movement of the workpiece to be detected; the middle of the floating layer is provided with a plurality of filling parts, so that the enclosed space enclosed by the sealing mechanism and the workpiece to be detected is reduced, and helium gas required to be filled into the enclosed space during detection is reduced; the floating layer has good elastic sealing performance, and is favorable for better sealing and fitting of the sealing layer and the workpiece to be detected.
2. The battery shoe air tightness detection device according to claim 1, wherein: the sealing layer is a rubber layer sandwiched between two metal layers.
3. The battery shoe air tightness detection device according to claim 1, wherein: the bearing mechanism comprises a limiting piece, an air cylinder and bearing pieces, wherein the bearing pieces are fixed on an output shaft of the air cylinder, the air cylinder drives the bearing pieces to move up and down, the limiting pieces are fixed on the base, and the vertical heights of the limiting pieces of each bearing mechanism from the plane of the base are consistent; the limiting piece limits the highest upward moving height of the bearing piece, so that the upward moving height of the bearing piece of each bearing mechanism is positioned on the same plane.
4. The battery shoe air tightness detection device according to claim 1, wherein: the limiting mechanism comprises a guide rail fixed on the base, a moving part sliding back and forth along the guide rail and a power mechanism driving the moving part to move back and forth.
5. The battery shoe air tightness detection device according to claim 4, wherein: the power mechanism comprises a motor and a ball screw fixedly connected with an output shaft of the motor, and the ball screw is mutually matched and connected with a sliding sleeve on the moving part.
6. The battery shoe air tightness detection device according to claim 5, wherein: the device also comprises a control mechanism for controlling the opening and closing of the cylinder and the motor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710629144.7A CN107167287B (en) | 2017-07-27 | 2017-07-27 | Air tightness detection device of battery collet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710629144.7A CN107167287B (en) | 2017-07-27 | 2017-07-27 | Air tightness detection device of battery collet |
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| Publication Number | Publication Date |
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| CN107167287A CN107167287A (en) | 2017-09-15 |
| CN107167287B true CN107167287B (en) | 2023-08-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710629144.7A Active CN107167287B (en) | 2017-07-27 | 2017-07-27 | Air tightness detection device of battery collet |
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| CN (1) | CN107167287B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110132506A (en) * | 2019-06-12 | 2019-08-16 | 南京英尼格玛工业自动化技术有限公司 | A kind of versatility is good and the adjustable cabinet air-tightness detection device of pressure point |
| CN112665792B (en) * | 2020-11-09 | 2023-03-31 | 南京英尼格玛工业自动化技术有限公司 | Battery collet welding seam leak hunting device |
| CN112548449A (en) * | 2020-12-01 | 2021-03-26 | 南京英尼格玛工业自动化技术有限公司 | Battery bottom support welding tool and welding method adopting same |
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| CN201051040Y (en) * | 2007-01-31 | 2008-04-23 | 丹东热工仪表有限公司 | Leakage detection device |
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| CN107167287A (en) | 2017-09-15 |
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