CN115615618A - Combined material battery upper cover gas tightness detection device - Google Patents
Combined material battery upper cover gas tightness detection device Download PDFInfo
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- CN115615618A CN115615618A CN202211390542.5A CN202211390542A CN115615618A CN 115615618 A CN115615618 A CN 115615618A CN 202211390542 A CN202211390542 A CN 202211390542A CN 115615618 A CN115615618 A CN 115615618A
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- 238000001514 detection method Methods 0.000 title claims abstract description 60
- 239000000463 material Substances 0.000 title claims description 3
- 238000007789 sealing Methods 0.000 claims abstract description 55
- 230000007246 mechanism Effects 0.000 claims abstract description 49
- 239000002131 composite material Substances 0.000 claims abstract description 14
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 230000005540 biological transmission Effects 0.000 claims description 46
- 238000000034 method Methods 0.000 claims description 8
- 238000003780 insertion Methods 0.000 claims description 7
- 230000037431 insertion Effects 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 6
- 238000013459 approach Methods 0.000 claims description 4
- 239000013013 elastic material Substances 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 3
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 230000003044 adaptive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
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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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Abstract
The invention discloses a device for detecting the air tightness of an upper cover of a composite material battery, which comprises a detection platform, wherein the top of the detection platform is provided with a sealing gasket; the top pressing blocks are arranged above the detection platform and are arranged at intervals around the sealing gasket; the lifting driving mechanism is arranged on the detection platform and is rotationally connected with the tail end of the top pressing block, which is far away from the sealing gasket; the positioning push rods are arranged on the detection platform in a sliding mode and located on the side of the top pressing block, and the battery upper cover is pushed by the plurality of positioning push rods in a fixed stroke from the peripheral direction; the linkage mechanism is arranged on the detection platform and connected with the top pressing block and the positioning push rod, the supporting type pressing devices are composed of the top pressing block and the lifting driving mechanism, the position calibration devices are composed of the positioning push rod and the linkage mechanism and are linked with the top pressing block through the linkage mechanism, the supporting type pressing devices and the calibration devices are integrated on the detection platform, and the air leakage points on the upper cover of the battery can be conveniently and subsequently checked.
Description
Technical Field
The invention relates to the technical field of power battery detection, in particular to a composite material battery upper cover air tightness detection device.
Background
The power battery pack is an important part in the new energy automobile, is provided with a firm and sealed metal shell box body so as to fix components such as a battery module, a BMS, a BEC and a bus bar in the power battery pack, and after the internal installation is completed, an upper cover plate is fixed on the box body through bolts. After the upper cover plate is installed, the air tightness of the outer shell is generally required to be detected so as to represent the performances of water resistance, sealing, crack prevention, deformation prevention and the like, and the power battery can be ensured to work effectively on a new energy automobile for a long time.
Generally, the operation flow of the air tightness detection is that the upper cover of the battery is placed on a sliding table with a sealing gasket at the top, a special aluminum alloy welding frame is adopted to press the flange edge of the upper cover of the battery pack, then the upper cover of the battery pack is moved into the detection equipment through the sliding table device, and the aluminum alloy frame is pressed through a plurality of air cylinders which are arranged in a hoisting mode so as to achieve the tightness of the upper cover of the battery and the sliding table, and then the air tightness is tested through inflation.
However, the existing air tightness detection device is not only complicated to use, but also depends on a sliding table to use, which is not beneficial to flexible conveying of the upper cover of the battery. More importantly, when the air tightness is detected, the whole battery upper cover is surrounded by a plurality of hydraulic cylinders, so that the detection operation and observation are difficult to perform when air leakage points, particularly air leakage points on the top of the battery upper cover, are subsequently inspected.
Disclosure of Invention
The invention aims to provide a composite material battery upper cover air tightness detection device, which solves the technical problems that the air tightness detection device in the prior art cannot meet the requirements of flexible transportation of the battery upper cover and inconvenience in gas leakage point investigation.
In order to solve the technical problems, the invention specifically provides the following technical scheme:
a composite battery upper cover gas tightness detection device, comprising:
the top of the detection platform is provided with a sealing gasket;
the top pressing blocks are arranged above the detection platform and are arranged at intervals around the sealing gasket;
the lifting driving mechanism is arranged on the detection platform and is rotationally connected with the tail end, far away from the sealing gasket, of the top pressing block, and the top pressing block is driven by the lifting driving mechanism to rotate in a reciprocating mode, so that the front end of the top pressing block can tightly press the edge of the upper cover of the battery on the sealing gasket to seal and release the upper cover of the battery;
the positioning push rods are arranged on the detection platform in a sliding mode and located on the side of the top pressing block, and the plurality of positioning push rods push the upper cover of the battery in a fixed stroke from the peripheral direction, so that the sealing gasket can be in sealing connection with the upper cover of the battery at the same sealing matching position;
the linkage mechanism is arranged on the detection platform and connected with the top pressing block and the positioning push rod, the top pressing block drives the positioning push rod to push the upper cover of the battery with a fixed stroke in the process of moving the upper cover of the battery through the linkage mechanism, and the positioning push rod is enabled to reach the fixed stroke before the top pressing block applies pressure to the upper cover of the battery.
As a preferred scheme of the invention, the linkage mechanism comprises a pressing block base, a pressing block connecting rod and a transmission connecting rod, wherein the lower end of the pressing block connecting rod is rotatably arranged on the pressing block base, the upper end of the pressing block connecting rod is rotatably connected with the middle part of the top pressing block, and the tail end of the top pressing block is rotatably connected with the lifting driving mechanism;
briquetting connecting rod upper end is to keeping away from briquetting base direction extension is provided with the top extension, it is provided with first drive pin to slide through the slot hole column structure on the extension of top, the transmission connecting rod with first drive pin and the location push rod all rotates to be connected.
As a preferred scheme of the invention, the detection platform is provided with a mounting seat adjacent to the lifting driving mechanism, the mounting seat is provided with a first guide hole and a guide groove, the positioning push rod is in sliding insertion fit with the first guide hole, a transmission slide block is arranged in the guide groove in a sliding manner, and the transmission slide block and the top end extension part are both rotationally connected with the transmission connecting rod;
the transmission sliding block is connected with the positioning push rod through a self-disengaging assembly, and the self-disengaging assembly is used for enabling the positioning push rod to move for a fixed stroke and then disengage from the transmission sliding block, so that the top pressing block can continue to move towards the edge of the lower battery upper cover without being limited by the positioning push rod.
As a preferred scheme of the invention, the self-disengaging assembly comprises a wedge-shaped block, a wedge-shaped block return spring, an elastic connecting rod and a trigger rod, wherein a abdicating hole is formed in the outer side of the transmission slide block, which is close to the positioning push rod, one end of a single angle of the wedge-shaped block is rotatably arranged on the wall of the abdicating hole through a shaft, one end of the single angle of the wedge-shaped block is far away from the sealing gasket, one angle, which is far away from the positioning push rod, of the other end of the wedge-shaped block is rotatably connected with the elastic connecting rod, and a wedge-shaped groove which is adaptive to the shape of the wedge-shaped block is formed in the side surface of the positioning push rod;
the transmission slider is close to the one end of sealed pad is provided with the intercommunication the second guiding hole in hole of stepping down, the trigger bar with the second guiding hole slides and pegs graft, the inner end of trigger bar with elastic connecting rod rotates and connects and the outer end exposes the second guiding hole, wedge piece reset spring sets up in the second guiding hole and with the inner end of trigger bar is connected.
As a preferable scheme of the present invention, a push rod return spring is disposed in the hole wall of the first guide hole through a groove-shaped structure, the positioning push rod is connected to the push rod return spring, so that the positioning push rod can be driven to return by the push rod return spring after being disconnected from the transmission slider, and the elastic link is made of an elastic material capable of being bent and restored.
As a preferable scheme of the present invention, a front measurement supporting plate is slidably disposed on the mounting seat, the front measurement supporting plate is configured to support the battery upper cover before the battery upper cover moves above the sealing matching position, a supporting plate resetting component connected to the front measurement supporting plate is disposed on the mounting seat, and the supporting plate resetting component drives the front measurement supporting plate to reset after the battery upper cover moves above the sealing matching position, so that the battery upper cover is released to the sealing matching position of the sealing gasket.
As a preferable scheme of the invention, a bottom end extension portion is arranged at the lower end of the pressing block connecting rod far away from the top pressing block in an extending manner, the support plate resetting component is connected with the bottom end extension portion, and the bottom end extension portion rotates towards the direction far away from the upper battery cover in the process that the top pressing block approaches the upper battery cover and drives the support plate resetting component to reset the front measurement support plate.
As a preferable scheme of the invention, a third guide hole is formed in the mounting seat, the front measuring supporting plate is in sliding insertion fit with the third guide hole, and one side of the third guide hole, which is close to the lifting driving mechanism, penetrates through the mounting seat;
the supporting plate resetting component comprises a second transmission pin arranged on the side face of the front supporting plate and a vertical groove arranged on the bottom end extending part along the length direction, and the second transmission pin is in sliding splicing fit with the vertical groove.
As a preferable scheme of the present invention, both sides of the top press block are provided with the press block connecting rods, one side of the press block connecting rod is provided with the top end extension portion, and the other side of the press block connecting rod is provided with the bottom end extension portion.
As a preferable scheme of the invention, the position of the lifting driving mechanism corresponds to the position of a threaded hole at the edge of the upper battery cover, and the front end of the top pressing block, which is far away from the sealing gasket, is provided with a circular rubber gasket, and the circular rubber gasket covers and seals the corresponding threaded hole on the upper battery cover when the top pressing block presses the upper battery cover.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the supporting type pressing devices composed of the top pressing block and the lifting driving mechanism are arranged on the detection platform with the sealing gasket, and the position calibration devices composed of the positioning push rod and the linkage mechanism are linked with the top pressing block through the linkage mechanism, so that the supporting type pressing devices and the calibration devices are integrated on the detection platform, the subsequent investigation of the air leakage points on the upper cover of the battery is facilitated, the placement of the upper cover of the battery to be detected and the output of the upper cover of the detected battery are facilitated, and the efficiency of an air tightness detection link is improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary and that other implementation drawings may be derived from the provided drawings by those of ordinary skill in the art without inventive effort.
FIG. 1 is a schematic overall structure diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural view of a pressure block connecting rod of the present invention;
FIG. 3 is a schematic view of the linkage mechanism of the present invention;
fig. 4 is a schematic structural view of the self-disengaging assembly of the present invention.
The reference numerals in the drawings denote the following, respectively:
1-detection platform; 2-a sealing gasket; 3-top briquetting; 4-a lifting driving mechanism; 5-upper cover of battery; 6-positioning the push rod; 7-a linkage mechanism; 8, mounting seats; 9-a first guide hole; 10-a guide groove; 11-a transmission slide block; 12-a self-disengaging assembly; 13-abdicating holes; 14-wedge-shaped grooves; 15-a second pilot hole; 16-a push rod return spring; 17-measuring the front supporting plate; 18-a pallet reset assembly; 19-a bottom end extension; 20-a third pilot hole;
701-a pressing block base; 702-a press block linkage; 703-a drive link; 704-a tip extension; 705 — a first drive pin;
1201-wedge block; 1202-wedge block return spring; 1203-elastic linkage; 1204-a trigger lever;
1801-a second drive pin; 1802-vertical slots.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 4, the present invention provides a composite material battery upper cover airtightness detection apparatus, comprising:
the top of the detection platform 1 is provided with a sealing gasket 2;
the top pressing blocks 3 are arranged above the detection platform 1 and are arranged at intervals around the sealing gasket 2;
the lifting driving mechanism 4 is arranged on the detection platform 1 and is rotationally connected with the tail end of the top pressing block 3, which is far away from the sealing gasket 2, and the top pressing block 3 is driven by the lifting driving mechanism 4 to rotate in a reciprocating manner, so that the front end of the top pressing block 3 can tightly press the edge of the upper battery cover 5 on the sealing gasket 2 to seal and release the upper battery cover 5;
the positioning push rods 6 are arranged on the detection platform 1 in a sliding mode and located on the side of the top pressing block 3, and the plurality of positioning push rods 6 push the upper battery cover 5 in a fixed stroke from the peripheral direction, so that the sealing gasket 2 can be in sealing connection with the upper battery cover 5 at the same sealing matching position;
and the linkage mechanism 7 is arranged on the detection platform 1 and is connected with the top pressing block 3 and the positioning push rod 6, the top pressing block 3 drives the positioning push rod 6 to push the upper battery cover 5 by a fixed stroke in the process of moving to the upper battery cover 5 through the linkage mechanism 7, and the positioning push rod 6 reaches the fixed stroke before the top pressing block 3 applies pressure to the upper battery cover 5.
The invention is characterized in that:
the lifting driving mechanism 4 and the top pressing block 3 form a supporting type pressing device arranged on the detection platform 1, and compared with the existing lifting type pressing device which is arranged above the battery upper cover 5 and used for pressing the edge of the battery upper cover 5 onto the sealing gasket 2, the supporting type pressing device arranged on the detection platform 1 is more beneficial to detecting and observing the side surface and the top of the battery upper cover 5 when the position of an air leakage point is subsequently checked, and is especially convenient to detect and observe the top of the battery upper cover 5;
the supporting type compressing devices arranged around the sealing gasket 2 at intervals are beneficial to reducing the volume of each supporting type compressing device while achieving the same compressing force on the upper battery cover 5, so that the length and the height of a shielding area on the side surface of the upper battery cover 5, which is shielded by each supporting type compressing device, are beneficial to reducing, and the shielded area can be conveniently detected, operated and observed;
the positioning push rod 6 is linked with the top pressing block 3 through the linkage mechanism 7, the battery upper cover 5 can be moved to a sealing matching position on the sealing gasket 2 by the positioning push rod 6 before the top pressing block 3 applies pressure to the battery upper cover 5, and the positioning push rod 6 and the linkage mechanism 7 form a position calibration device;
moreover, the upper battery cover 5 to be detected can be always matched with the same sealing matching position on the sealing gasket 2 under the action of the positioning push rods 6, so that shallow grooves matched with the edge of the upper battery cover 5 in shape are gradually formed at the sealing matching position of the sealing gasket 2, and the problem that criss-cross concave-convex surfaces which are difficult to be attached to the edge of the upper battery cover 5 are formed after the surface of the sealing gasket 2 is used for a long time due to the fact that the positions of the upper battery cover 5 are inconsistent every time is avoided, and therefore the service life of the sealing gasket 2 is prolonged;
support formula closing device and position calibrating device and all set up on testing platform 1 that has sealed pad 2, because the horizontal displacement that its front end produced when top briquetting 3, and top briquetting 3 can compress tightly and release 5 edges of battery upper cover with the rotation mode, thereby can realize airtight shape detection device and conveying equipment's smooth butt joint through set up conveying equipment in testing platform 1 top, top conveying equipment releases to the battery upper cover 5 on sealed pad 2 promptly and can directly carry out position calibration and detection, and directly be carried by top conveying equipment after accomplishing the gas tightness detects, and the gas tightness detection device that current needs the cooperation to set up sealed pad 2's slip table and use then need establish in addition transfer equipment or shift by the manual work, in order to accomplish the transfer of battery upper cover 5 between slip table and conveying equipment.
In summary, the supporting type pressing devices composed of the top pressing block 3 and the lifting driving mechanism 4 are arranged on the detection platform 1 with the sealing gasket 2, and the position calibration devices composed of the positioning push rod 6 and the linkage mechanism 7 are linked with the top pressing block 3 through the linkage mechanism 7, so that the supporting type pressing devices and the calibration devices are integrated on the detection platform 1, the subsequent detection of air leakage points on the battery upper cover 5 is facilitated, the placement of the battery upper cover 5 to be detected and the output of the detected battery upper cover 5 are facilitated, and the efficiency of an air tightness detection link is improved.
The linkage mechanism 7 comprises a pressing block base 701, a pressing block connecting rod 702 and a transmission connecting rod 703, the lower end of the pressing block connecting rod 702 is rotatably arranged on the pressing block base 701, the upper end of the pressing block connecting rod 702 is rotatably connected with the middle of the top pressing block 3, and the tail end of the top pressing block 3 is rotatably connected with the lifting driving mechanism 4.
The upper end of the pressing block connecting rod 702 extends towards the direction away from the pressing block base 701 to form a top end extending part 704, a first transmission pin 705 is arranged on the top end extending part 704 in a sliding mode through a long hole-shaped structure, and the transmission connecting rod 703 is rotationally connected with the first transmission pin 705 and the positioning push rod 6.
When the battery upper cover 5 needs to be compressed and sealed, the lifting driving mechanism 4 drives the tail end of the top pressing block 3 to rotate upwards, so that the front end of the top pressing block 3 approaches the edge of the battery upper cover 5 downwards and applies pressure to the edge of the battery upper cover 5.
In the process that the front end of the top pressing block 3 is close to the edge of the upper battery cover 5, the upper end of the pressing block connecting rod 702 is driven by the top pressing block 3 to rotate upwards, so that the top end extending part 704 at the upper end rotates upwards, and the top end extending part 704 can drive the positioning push rod 6 to move towards the upper battery cover 5 through the first transmission pin 705.
Furthermore, the top end extension 704 is configured to increase the displacement distance in the horizontal direction generated during the upward rotation of the first transmission pin 705, so as to increase the area of the area surrounded by the plurality of positioning push rods 6 at the initial positions, and to facilitate the battery cover 5 to be placed on the gasket 2 through the area surrounded by the plurality of positioning push rods 6.
The lifting driving mechanism 4 is any component with a linear reciprocating driving function, such as an air cylinder, an oil cylinder, an electric push rod and the like.
After the positioning push rods 6 reach a fixed stroke and the battery upper cover 5 is fixed at the sealing matching position by the plurality of positioning push rods 6, the positioning push rods 6 cannot push the battery upper cover 5 continuously, and the top pressing block 3 needs to move continuously. Although the problem can be solved by setting the positioning push rod 6 to be a hollow telescopic structure which can contract after the pressure applied to the positioning push rod 6 reaches a certain value, if the positioning push rod 6 is locked and cannot contract, the battery upper cover 5 is excessively extruded by the positioning push rod 6 and is deformed or even damaged.
Therefore, the detection platform 1 is provided with a mounting seat 8 adjacent to the lifting driving mechanism 4, the mounting seat 8 is provided with a first guide hole 9 and a guide groove 10, the positioning push rod 6 is in sliding insertion fit with the first guide hole 9, a transmission slide block 11 is arranged in the guide groove 10 in a sliding manner, and the transmission slide block 11 and the top end extension 704 are both rotatably connected with the transmission connecting rod 703. And the transmission slide block 11 is connected with the positioning push rod 6 through a self-disengaging assembly 12, and the self-disengaging assembly 12 is used for disengaging the positioning push rod 6 from the transmission slide block 11 after moving for a fixed stroke, so that the top pressing block 3 can continue to move towards the edge of the battery upper cover 5 below without being limited by the positioning push rod 6.
The self-disengaging component 12 comprises a wedge-shaped block 1201, a wedge-shaped block return spring 1202, an elastic connecting rod 1203 and a trigger rod 1204, wherein an abdicating hole 13 is formed in the outer side, close to the positioning push rod 6, of the transmission sliding block 11, one single-angle end of the wedge-shaped block 1201 is rotatably arranged on the wall of the abdicating hole 13 through a shaft, one single-angle end of the wedge-shaped block 1201 is far away from the sealing gasket 2, one angle, far away from the positioning push rod 6, of the other end of the wedge-shaped block 1201 is rotatably connected with the elastic connecting rod 1203, and a wedge-shaped groove 14 matched with the shape of the wedge-shaped block 1201 is formed in the side surface of the positioning push rod 6;
one end of the transmission sliding block 11 close to the sealing gasket 2 is provided with a second guide hole 15 communicated with the abdicating hole 13, the trigger rod 1204 is inserted into the second guide hole 15 in a sliding manner, the inner end of the trigger rod 1204 is rotatably connected with the elastic connecting rod 1203, the outer end of the trigger rod 1204 is exposed out of the second guide hole 15, and the wedge-shaped block return spring 1202 is arranged in the second guide hole 15 and connected with the inner end of the trigger rod 1204.
The working principle of the self-disengaging assembly 12 is that after the transmission slider 11 moves until the outer end of the trigger rod 1204 abuts against the groove wall at one end of the guide groove 10, along with the continuous movement of the transmission slider 11, the trigger rod 1204 is pushed into the second guide hole 15, the wedge-shaped block return spring 1202 is compressed, and at the same time, the trigger rod 1204 drives the elastic connecting rod 1203 to pull the wedge-shaped block 1201 to disengage from the wedge-shaped groove 14 and fall into the abdicating hole 13, so that the connection state of the transmission slider 11 and the positioning push rod 6 is released. Then, the trigger rod 1204 can be pushed continuously after the wedge 1201 falls into the abdicating hole 13, so as to meet the requirement that the transmission slide block 11 is driven by the top pressing block 3 to move continuously.
In addition, in order to realize the adjustment of the fixed stroke of the positioning push rod 6, an adjusting pin which is right opposite to the outer end of the trigger rod 1204 can be arranged in the mounting seat 8 through a pin hole, and the length of the pin hole which is exposed at one end of the adjusting pin close to the trigger rod 1204 can enable the wedge block 1201 to be triggered to fall into the yielding hole 13 when the positioning push rod 6 has different strokes, so that the fixed stroke of the positioning push rod 6 can be adjusted to adapt to different initial distances between the positioning push rod 6 and the upper battery cover 5.
Further, in order to avoid the adverse effect on the follow-up pressing of the upper cover onto the gasket 2 caused by the abutting of the side surfaces of the positioning push rod 6 and the battery upper cover 5 and ensure that the wedge block 1201 can be pushed into the wedge groove 14 after being reset, a push rod reset spring 16 is arranged in the hole wall of the first guide hole 9 through a groove-shaped structure, the positioning push rod 6 is connected with the push rod reset spring 16, so that the positioning push rod 6 can be driven to reset by the push rod reset spring 16 after being disconnected from the transmission slider 11, and the elastic connecting rod 1203 is made of an elastic material capable of being bent and restored.
In addition, in the process of resetting the transmission slider 11, the trigger lever 1204 is reset by the driving of the wedge-shaped block reset spring 1202, and the wedge-shaped block 1201 is stopped by the positioning push rod 6 and cannot be reset at this time, the elastic connecting rod 1203 is bent, until the transmission slider 11 is reset until the wedge-shaped block 1201 is aligned with the wedge-shaped groove 14, and the wedge-shaped block 1201 is immediately pushed into the wedge-shaped groove 14 by the elastic potential energy released by the bent elastic connecting rod 1203.
And, in order to be favorable to the location push rod 6 to pass battery upper cover 5 to sealed cooperation position department, it has before survey supporting plate 17 to slide on mount pad 8, before surveying supporting plate 17 and being used for moving battery upper cover 5 to sealed cooperation position top to support battery upper cover 5, be provided with on mount pad 8 with survey preceding supporting plate 17 connection's layer board reset assembly 18, layer board reset assembly 18 drives before surveying supporting plate 17 and resets after battery upper cover 5 moves to sealed cooperation position top, so that battery upper cover 5 is released to sealed the sealed cooperation position of sealed pad 2.
And in order to reduce the negative influence on the detection and observation of the air leakage point on the battery upper cover 5 caused by the arrangement of the supporting plate resetting component 18, the front measuring supporting plate 17 is arranged to be linked with the guide block in the same way as the positioning push rod 6.
Therefore, the lower end of the pressing block connecting rod 702, which is far away from the top pressing block 3, extends to form a bottom extending part 19, the supporting plate resetting component 18 is connected with the bottom extending part 19, the bottom extending part 19 rotates in the direction of being far away from the upper battery cover 5 in the process that the top pressing block 3 is close to the upper battery cover 5, and the supporting plate resetting component 18 is driven to reset the front measuring supporting plate 17.
The action directions of the bottom end extension part 19 and the top end extension part 704 are always opposite, but the functions and the principles are similar, that is, when the top end extension part 704 rotates upwards to be close to the upper cover 5 of the battery, the bottom end extension part 19 rotates to be far away from the upper cover 5 of the battery, so that the linkage of the top pressing block 3, the positioning push rod 6 and the front measuring supporting plate 17 is realized by utilizing the characteristic that the rotation directions of the two ends of the pressing block are always opposite.
Specifically, a third guide hole 20 is formed in the mounting base 8, the front measuring supporting plate 17 is in sliding insertion fit with the third guide hole 20, and one side, close to the lifting driving mechanism 4, of the third guide hole 20 penetrates through the mounting base 8. The supporting plate resetting component 18 comprises a second driving pin 1801 arranged on the side surface of the front supporting plate 17 and a vertical groove 1802 arranged on the bottom end extension part 19 along the length direction, and the second driving pin 1801 is in sliding insertion fit with the vertical groove 1802.
Moreover, in order to balance or approach the stress on the two sides of the top press block 3, so as to facilitate the stability of the top press block 3, press block connecting rods 702 are arranged on the two sides of the top press block 3, the press block connecting rod 702 on one side is provided with a top end extension portion 704, and the press block connecting rod 702 on the other side is provided with a bottom end extension portion 19.
And correspondingly, mount pad 8 is the structure of similar "U" shape, lift actuating mechanism 4 is located positioning push rod 6 and surveys between the fore-stock 17, and mount pad 8 is connected with lift actuating mechanism 4 through the bolt, and set up corresponding being used for on the testing platform 1 to carry out fixed if the double-screw bolt to mount pad 8, the dowel structure, in order to improve mount pad 8 and sealed assembly precision of filling up 2 and lift actuating mechanism 4, thereby conveniently debug a plurality of top briquetting 3, positioning push rod 6 and fore-stock 17.
In addition, the position of the lifting driving mechanism 4 corresponds to the position of a threaded hole in the edge of the upper battery cover 5, a round rubber pad is arranged at the front end, far away from the vertex angle cylinder, of the top pressing block 3, and the round rubber pad covers and seals the corresponding threaded hole in the upper battery cover 5 when the top pressing block 3 tightly presses the upper battery cover 5, so that the stress state and the sealing state of the edge of the upper battery cover 5 during actual assembly can be better simulated, and the reliability of an air tightness detection result is improved.
The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made to the disclosure by those skilled in the art within the spirit and scope of the disclosure, and such modifications and equivalents should also be considered as falling within the scope of the disclosure.
Claims (10)
1. The utility model provides a combined material battery upper cover gas tightness detection device which characterized in that includes:
the top of the detection platform (1) is provided with a sealing gasket (2);
the top pressing blocks (3) are arranged above the detection platform (1) and are arranged at intervals around the sealing gasket (2);
the lifting driving mechanism (4) is arranged on the detection platform (1) and is rotationally connected with the tail end, far away from the sealing gasket (2), of the top pressing block (3), and the top pressing block (3) is driven by the lifting driving mechanism (4) to rotate in a reciprocating mode, so that the front end of the top pressing block (3) can press the edge of the upper battery cover (5) on the sealing gasket (2) to seal and release the upper battery cover (5);
the positioning push rods (6) are arranged on the detection platform (1) in a sliding mode and located on the side of the top pressing block (3), and the plurality of positioning push rods (6) push the upper battery cover (5) in a fixed stroke from the peripheral direction, so that the sealing gasket (2) can be in sealing connection with the upper battery cover (5) at the same sealing matching position;
linkage mechanism (7), set up detection platform (1) go up and connect top briquetting (3) with location push rod (6), top briquetting (3) are passing through to battery upper cover (5) motion in-process linkage mechanism (7) drive location push rod (6) promote battery upper cover (5) with fixed stroke, and make location push rod (6) are in reach fixed stroke before top briquetting (3) exert pressure to battery upper cover (5).
2. The composite material battery upper cover airtightness detection apparatus according to claim 1, wherein the linkage mechanism (7) includes a pressing block base (701), a pressing block connecting rod (702) and a transmission connecting rod (703), a lower end of the pressing block connecting rod (702) is rotatably disposed on the pressing block base (701), an upper end of the pressing block connecting rod (702) is rotatably connected with a middle portion of the top pressing block (3), and a tail end of the top pressing block (3) is rotatably connected with the lifting drive mechanism (4);
the upper end of the briquetting connecting rod (702) extends and is provided with a top end extending part (704) in the direction far away from the briquetting base (701), a first transmission pin (705) is arranged on the top end extending part (704) in a sliding mode through a long hole-shaped structure, and the transmission connecting rod (703) is rotatably connected with the first transmission pin (705) and the positioning push rod (6).
3. The composite material battery upper cover airtightness detection device according to claim 2, wherein a mounting seat (8) adjacent to the lifting drive mechanism (4) is arranged on the detection platform (1), the mounting seat (8) is provided with a first guide hole (9) and a guide groove (10), the positioning push rod (6) is in sliding insertion fit with the first guide hole (9), a transmission slide block (11) is arranged in the guide groove (10) in a sliding manner, and the transmission slide block (11) and the top end extension portion (704) are both rotatably connected with the transmission connecting rod (703);
the transmission sliding block (11) is connected with the positioning push rod (6) through a self-disengaging assembly (12), and the self-disengaging assembly (12) is used for enabling the positioning push rod (6) to be disengaged from the transmission sliding block (11) after moving for a fixed stroke, so that the top pressing block (3) can continue to move towards the edge of the lower battery upper cover (5) without being limited by the positioning push rod (6).
4. The composite material battery upper cover airtightness detection device according to claim 3, wherein the self-disengaging assembly (12) comprises a wedge-shaped block (1201), a wedge-shaped block return spring (1202), an elastic connecting rod (1203) and a trigger rod (1204), an abdicating hole (13) is formed in the outer side, close to the positioning push rod (6), of the transmission slide block (11), one single-angle end of the wedge-shaped block (1201) is rotatably arranged on the hole wall of the abdicating hole (13) through a shaft, one single-angle end of the wedge-shaped block (1201) is arranged away from the sealing gasket (2), one corner, away from the positioning push rod (6), of the other end of the wedge-shaped block (1201) is rotatably connected with the elastic connecting rod (1203), and a wedge-shaped groove (14) which is matched with the shape of the wedge-shaped block (1201) is formed in the side face of the positioning push rod (6);
drive slider (11) are close to the one end of sealed pad (2) is provided with the intercommunication second guiding hole (15) of hole (13) abdicate, triggering lever (1204) with second guiding hole (15) slip grafting, the inner end of triggering lever (1204) with elastic connecting rod (1203) rotate to be connected and the outer end exposes second guiding hole (15), wedge piece reset spring (1202) set up in second guiding hole (15) and with the inner end of triggering lever (1204) is connected.
5. The composite material battery upper cover airtightness detection device according to claim 4, wherein a push rod return spring (16) is arranged in the hole wall of the first guide hole (9) through a groove-shaped structure, the positioning push rod (6) is connected with the push rod return spring (16), so that the positioning push rod (6) can be driven to return by the push rod return spring (16) after being disconnected from the transmission slider (11), and the elastic connecting rod (1203) is made of an elastic material capable of being bent and restored.
6. The device for detecting the airtightness of the upper cover of the composite battery according to claim 3, wherein a front supporting plate (17) is slidably disposed on the mounting seat (8), the front supporting plate (17) is configured to support the upper cover (5) of the battery before the upper cover (5) of the battery moves above the sealing engagement position, a supporting plate resetting assembly (18) connected to the front supporting plate (17) is disposed on the mounting seat (8), and the supporting plate resetting assembly (18) drives the front supporting plate (17) to reset after the upper cover (5) of the battery moves above the sealing engagement position, so that the upper cover (5) of the battery is released to the sealing engagement position of the sealing gasket (2).
7. The composite material battery upper cover airtightness detection device according to claim 6, wherein a bottom end extension portion (19) is provided on a lower end of the press block connecting rod (702) that is far away from the top press block (3) in an extending manner, the support plate reset assembly (18) is connected to the bottom end extension portion (19), and the bottom end extension portion (19) rotates in a direction far away from the battery upper cover (5) in a process that the top press block (3) approaches the battery upper cover (5), and drives the support plate reset assembly (18) to reset the front measurement support plate (17).
8. The composite material battery upper cover airtightness detection apparatus according to claim 7, wherein a third guide hole (20) is provided in the mounting seat (8), the front support plate (17) is in sliding insertion fit with the third guide hole (20), and one side of the third guide hole (20) close to the lifting drive mechanism (4) penetrates through the mounting seat (8);
the supporting plate resetting component (18) comprises a second transmission pin (1801) arranged on the side face of the front supporting plate (17) and a vertical groove (1802) arranged on the bottom end extension part (19) along the length direction, and the second transmission pin (1801) is matched with the vertical groove (1802) in a sliding and inserting mode.
9. The composite material battery upper cover airtightness detection apparatus according to claim 6, wherein the top press block (3) is provided with the press block link (702) on both sides, one side of the press block link (702) is provided with the top end extension portion (704) and the other side of the press block link (702) is provided with the bottom end extension portion (19).
10. The device for detecting the airtightness of the upper cover of the composite material battery according to claim 1, wherein the position of the lifting driving mechanism (4) corresponds to the position of a threaded hole at the edge of the upper cover (5) of the battery, and the top pressing block (3) is provided with a circular rubber gasket at the front end close to the sealing gasket (2), and the circular rubber gasket covers and seals the corresponding threaded hole on the upper cover (5) of the battery when the top pressing block (3) presses the upper cover (5) of the battery.
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| CN115615618B (en) | 2023-05-05 |
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Denomination of invention: A Gas Tightness Testing Device for the Upper Cover of Composite Material Batteries Effective date of registration: 20231023 Granted publication date: 20230505 Pledgee: Huishang Bank Co.,Ltd. Wuhu Tuanjie Road Branch Pledgor: CHINA MACHINERY INDUSTRY TECHNOLOGY RESEARCH INSTITUTE OF PRECISION FORMING (ANHUI) Co.,Ltd. Registration number: Y2023980062294 |