CN210516895U

CN210516895U - Opening formation and exhaust integrated device

Info

Publication number: CN210516895U
Application number: CN201921665531.7U
Authority: CN
Inventors: 宋理; 危奕; 钱学兵; 雷娟
Original assignee: Shenzhen Asa Precision Electronic Co ltd
Current assignee: Shenzhen Asa Precision Electronic Co ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-05-12
Anticipated expiration: 2029-09-30

Abstract

The utility model discloses an integrative device becomes with exhaust of division, including the anterior segment part, back end part and sealing mechanism, sealing mechanism sets up at the anterior segment part separately, back end part is terminal surface in opposite directions, the anterior segment part includes the front stall, sucking disc and bayonet mechanism, the sucking disc is installed at the front stall terminal surface, bayonet mechanism installs on the front stall and follows the sucking disc, wear out in the sealing mechanism, the front stall is provided with air inlet and extraction opening, the anterior segment part, back end part is for components of a whole that can function independently structure phase motion, bayonet mechanism action is bled by extraction opening vacuum after puncturing air pocket electricity core air pocket and is accomplished electric core puncturing mouth periphery by sealing mechanism again and seals and realize the division and become, exhaust and seal the purpose. The utility model discloses can go on simultaneously with the exhaust technology with forming technology, save equipment input cost and because exhaust and formation process go on in step, the required negative pressure of exhaust is not very big, prevents effectively that electrolyte from being gasified under the too big condition of negative pressure to prevent the electrolyte loss.

Description

Opening formation and exhaust integrated device

Technical Field

The utility model relates to a lithium ion battery makes technical field, especially relates to an opening becomes and integrative device of exhaust, include anterior segment part, back end part and seal the mechanism.

Background

Known lithium ion battery is annotating the liquid after, must experience hot briquetting and becomes the process, in order to discharge the gas that hot briquetting in-process produced, generally can become after accomplishing, can exhaust alone, but exhaust apparatus is when carrying out the exhaust process to electric core, often because seek efficiency, negative pressure environment when can improving the exhaust, too high negative pressure often causes electrolyte to gush out along with gas from annotating the liquid mouth again easily, pollute the battery, lead to electrolyte to reduce simultaneously, and electrolyte mostly has toxicity, can produce harm to staff's health, and simultaneously, also need carry out the fluid infusion to the battery, and increase cost.

The existing production process hot briquetting and the exhaust process in the existing market are separated, the battery core needs to be placed in different equipment and tool fixtures respectively for processing, the investment of the equipment is high, a large bottleneck is formed for improving the battery output, and meanwhile, the improvement of the quality of a battery product is not facilitated.

SUMMERY OF THE UTILITY MODEL

The not enough to prior art, the utility model provides a technical problem how reduce the suppression become with exhaust apparatus input and prevent the loss when electrolyte exhausts.

For solving the technical problem, the utility model discloses a technical scheme be an integrative device of opening one-tenth and exhaust, include anterior segment part, back end part and seal the mechanism, seal the mechanism and establish respectively on anterior segment part, back end part terminal surface in opposite directions, anterior segment part includes front stall, sucking disc and bayonet mechanism, the sucking disc is installed the front stall terminal surface, bayonet mechanism installs on the front stall and follow wear out in sucking disc, the mechanism of sealing, the front stall is provided with air inlet and extraction opening, anterior segment part, back end part move for dividing the body structure in opposite directions, bayonet mechanism action puncture behind the electric core air pocket by extraction opening vacuum is bled again by seal the mechanism and accomplish electric core puncture mouthful periphery and seal and realize opening one-tenth, exhaust and seal the purpose.

The front seat is provided with an air inlet and an air exhaust opening on the side face, the front face is in sealing connection with the sucker, the end face of the sealing area is provided with an air passage communicated with the air exhaust opening, the back face is provided with a sinking platform and an upper sinking platform, the center of the sinking platform is provided with a through hole, and the surface of the upper sinking platform is further provided with an air groove communicated with the air inlet.

The bayonet mechanism comprises a bayonet, a sliding sleeve, a spring, a piston, a countersunk head thread and a cover plate, the sliding sleeve is sleeved and fixed in a through hole formed in the sinking platform, the bayonet is a cylinder with a bayonet head at the front end, a threaded hole is formed in the tail end of the cylinder, the piston is clamped between the springs, the piston is connected with the bayonet tail end threaded hole through the countersunk head thread, two ends of the spring are respectively abutted to the sliding sleeve and the cover plate, the cover plate is covered and sealed on the sinking platform formed in the back face of the front seat, and an airflow groove is formed in the periphery of the piston to allow compressed air to enter and drive the piston to drive the bayonet to slide in the sliding sleeve.

The sealing mechanism can be a heat sealing mechanism or a spraying sealing mechanism.

Sealing frame, back sealing frame and heater before the heat-seal mechanism is including, preceding sealing frame, back sealing frame set up respectively anterior segment part and back segment part correspond to serve, the heater sets up respectively preceding sealing frame, back sealing frame are inside so that can carry out the work of sealing in advance of electric core air pocket with heat-seal frame heating to the uniform temperature in the short time.

The mechanism is sealed in injection all is provided with the joint sealer interface in original front stall and back seat bottom, it has L type return bend to seal gluey interface connection, L type return bend mouth is connected with and seals the gluey syringe needle, it has the curved type of radian to seal the gluey syringe needle, and the syringe needle is in the about 5mm distance in the below that the thorn sword punctures the mouth, and syringe needle tilt up about 30 degrees can cover the puncture mouth by the thorn sword in order to ensure syringe needle spun glue, and the reinforcing punctures the reliability that the mouth is sealed by glue.

The back end part comprises a back seat, and the back seat is attached to the back face of the back seal frame.

For sealing the frame behind effectively and insulating heat, as the utility model discloses an improve, the utility model discloses still include the heat insulating board, the heat insulating board laminating sets up seal between frame, the back seat after.

Realize quick exhaust for guaranteeing the bayonet to electric core air pocket puncture effect, conduct the utility model discloses an improve, the utility model discloses a still include the dog, the dog corresponds bayonet department terminal surface is provided with the bayonet counter bore and the laminating setting is in seal between frame, the heat insulating board after.

Compared with the prior art, the utility model discloses can go on simultaneously with the exhaust technology with the formation technology, save equipment input cost and because the process of exhaust and formation is gone on in step, the required negative pressure of exhaust is not very big, prevents effectively that electrolyte from being gasified under the too big condition of negative pressure to prevent the electrolyte loss.

Drawings

FIG. 1 is a front view of the present invention;

FIG. 2 is a back view of the structure of the present invention;

FIG. 3 is an exploded view of the present invention;

FIG. 4 is a schematic view showing the structural relationship between the bayonet mechanism, the front seat and the suction cup;

fig. 5 is a schematic view of a spray sealing mechanism.

Detailed Description

The following description of the embodiments of the present invention will be made with reference to the accompanying drawings, but the present invention is not limited thereto.

Fig. 1 to 4 show an opening formation and exhaust integrated device, which includes a front section component 1, a rear section component 2 and a sealing mechanism 3, wherein the sealing mechanism 3 is separately arranged on the front section component 1 and the rear section component 2, the front section component 1 includes a front seat 11, a suction cup 12 and a bayonet mechanism, the suction cup 12 is arranged on the end surface of the front seat 11, the bayonet mechanism is arranged on the front seat 11 and penetrates out of the suction cup 12 and the sealing mechanism 3, the front seat 11 is provided with an air inlet 111 and an air exhaust port 112, the front section component 1 and the rear section component 2 move in opposite directions in a split structure, the bayonet mechanism operates to puncture an electric core air bag, then the electric core air bag is vacuumized by the air exhaust port 112 and then the sealing mechanism 3 completes the peripheral sealing of the electric core puncture port to realize the purposes of opening formation, exhaust and sealing.

The front seat 11 has an air inlet 111 and an air exhaust 112 on its side, the front side is connected with the suction cup 12 in a sealing manner, the end surface of the sealing area is provided with an air passage 113 communicated with the air exhaust 112, the back side is provided with a sinking platform and an upper sinking platform, the center of the sinking platform is provided with a through hole, and the surface of the upper sinking platform is also provided with an air channel communicated with the air inlet 111.

As shown in fig. 4, the bayonet mechanism includes a bayonet 131, a sliding sleeve 132, a spring 133, a piston 134, a counter thread 135 and a cover plate 136, the sliding sleeve 132 is sleeved and fixed in a through hole formed in the sinking platform, the bayonet 131 is a cylinder with a bayonet head at the front end, a threaded hole is formed at the tail end of the cylinder, the piston 134 is clamped between the spring 133, the counter thread 135 connects the piston 134 with the threaded hole at the tail end of the bayonet 131, two ends of the spring 133 are respectively abutted against the sliding sleeve 132 and the cover plate 136, the cover plate 136 covers the sinking platform formed on the back of the front seat 11, and an air flow groove is formed in the periphery of the piston 134 to allow compressed air to drive the piston 134 to drive the bayonet 131 to slide in.

The sealing mechanism 3 may be a heat sealing mechanism or a spray sealing mechanism.

The heat-seal mechanism seals frame 31, back frame 32 and heater before including, seals frame 31, back before, seals frame 32 and sets up respectively in anterior segment part 1 and back end part 2 correspond and serve, and the heater sets up respectively in the front and seals frame 31, back frame 32 inside so that can heat the frame of sealing to the constant temperature in the short time and carry out the work of sealing in advance of electric core air pocket.

As shown in fig. 5, the injection sealing mechanism is provided with a sealing compound interface 4 at the bottom of the original front seat 11 and the original back seat 21, the sealing compound interface 4 is connected with an L-shaped elbow, the opening of the L-shaped elbow is connected with a sealing compound needle 5, the sealing compound needle 5 has a curved shape with a radian, the needle is located at a distance of about 5mm below the piercing opening 6 of the piercing knife, and the needle is inclined upwards by about 30 degrees to ensure that the glue sprayed from the needle can completely cover the piercing opening 6 of the piercing knife, thereby enhancing the reliability of the piercing opening 6 sealed by the glue.

The rear section component 2 comprises a rear seat 21, and the rear seat 21 is attached to the back of the rear sealing frame 32.

For sealing frame 32 behind effectively and insulating heat, as the utility model discloses a improve, the utility model discloses still include heat insulating board 22, the laminating of heat insulating board 22 sets up between sealing frame 32 behind, back seat 21.

For guaranteeing bayonet 131 to pierce through the effect to electric core air pocket and realize quick exhaust, as the utility model discloses an improve, the utility model discloses a still include dog 23, dog 23 corresponds bayonet 131 department terminal surface and is provided with bayonet counter bore 231 and laminating setting between back cover frame 32, heat insulating board 22.

The utility model discloses a theory of operation:

when the exhaust process is started, the front member 1 and the rear member 2 move to a predetermined position in opposition to each other. At this time, the suction cup 12 is tightly attached to the stopper 23 to clamp the air bag, and the air bag is tightly attached to the front section member 1 and the rear section member 2 by the negative pressure communicated through the negative pressure port. When compressed air enters the front seat 11 through the air inlet 111, the compressed air flow is gathered between the cover plate 136 and the piston 134 by the air flow grooves on the piston 134, so that the piston 134 pushes the bayonet 131 to pierce the bayonet counter bore 231 in the block 23 of the rear section component 2, and the action of piercing the air bag is completed. After the puncture is completed, the compressed air stops supplying air, the bayonet 131 is retracted under the reset action of the spring 133, and the air in the air bag is continuously sucked out by the suction cup 12. When the heat sealing mechanism is used for sealing, the front sealing frame 31 and the rear sealing frame 32 start to be preheated before formation is finished, and when the specified temperature is reached, the front sealing frame 31 moves towards the rear sealing frame 32 to press the air bag and pre-seal the puncture. After several seconds, the front sealing frame 31 returns to the original position, the heating is stopped, the vacuum is cut off, the front section component 1 and the rear section component 2 return to the original positions simultaneously, and the exhaust is finished. When the sealing is carried out by adopting the injection sealing mechanism, when the bayonet pierces the air bag of the electric core 7, the sealing glue needle head 5 sprays the special glue 8 to cover the piercing opening 6 of the bayonet at the same time, the formation is finished, and the piercing opening 6 can be tightly adhered with the rear section component 2 through the front section component 1 to complete the sealing of the periphery of the piercing opening 6. The vacuum is cut off, the front section component 1 and the rear section component 2 return to the original positions at the same time, and the exhaust is finished.

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

the negative pressure generator is provided with a sucker, when the opening formation operation is carried out, negative pressure is generated inside the sucker through an external negative pressure vacuum pump, gas generated in the battery cell seeps out through a cut pierced by a bayonet under the action of the negative pressure inside the sucker and is recovered through a negative pressure interface, the opening formation and the exhaust are carried out simultaneously, the processing link is reduced, and the yield is improved;

the negative pressure extraction opening is arranged, when the operation is carried out, gas generated in the battery core seeps out through the broken opening pierced by the bayonet under the action of negative pressure in the sucker, is recovered through the negative pressure interface, and is subjected to thermal compression and exhaust simultaneously, so that exhaust can be carried out without large negative pressure, electrolyte is prevented from being gasified under high negative pressure and flowing out of the broken opening due to overhigh negative pressure, and the electrolyte is prevented from polluting the battery at the same time;

arranging a front sealing frame and a rear sealing frame, wherein when the opening is formed, gas generated in the battery cell seeps out through a cut pierced by a bayonet under the action of negative pressure in a sucker, then heating wires in the front sealing frame and the rear sealing frame start to heat the front sealing frame and the rear sealing frame, and after a certain temperature is reached, hot melting and bonding are carried out on the parts of the front sealing frame and the rear sealing frame, which are in contact with an air bag of the battery cell, so that the sealing is completed, the isolation of the electrolyte of the battery cell from the outside air is effectively sealed, and the moisture in the outside air is prevented from permeating into the electrolyte and damaging the battery cell;

be provided with the front bezel, when exhausting, the breach that produces in the electric core under the effect of the inside negative pressure of front bezel side sucking disc oozes through the bayonet to retrieve through the negative pressure interface, the hot briquetting goes on with the exhaust simultaneously, consequently, only needs very little negative pressure environment, just can let the gas of production in the electric core discharge at any time, avoids too high negative pressure environment to cause the gasification of electrolyte in the electric core and is discharged, makes the electrolyte quality reduce. Liquid supplementation is avoided and the production cost is reduced;

the air bag is pierced by the bayonet at a certain speed when the air is exhausted, the air generated in the battery core is leaked out through the pierced opening pierced by the bayonet under the action of negative pressure in the sucker, and is recovered through the negative pressure air exhaust opening, so that the air is exhausted thoroughly, the electrolyte is prevented from being gasified and the loss of the electrolyte in the battery core is prevented under the condition of negative pressure, and the possibility of polluting the battery core is reduced.

The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the described embodiments. It will be apparent to those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention.

Claims

1. The utility model provides an integrative device becomes with exhaust of division, includes anterior segment part, back end part and seals the mechanism, its characterized in that, it establishes to seal the mechanism branch anterior segment part, back end part are in on the terminal surface in opposite directions, anterior segment part includes front bezel, sucking disc and bayonet mechanism, the sucking disc is installed the front bezel terminal surface, bayonet mechanism installs on the front bezel and follow wear out in sucking disc, the mechanism of sealing, the front bezel is provided with air inlet and extraction opening, anterior segment part, back end part are for the components of a whole that can function independently structure.

2. The device as claimed in claim 1, wherein the front seat has an air inlet and an air outlet on its side, the front surface is connected to the suction cup in a sealing manner, the end surface of the sealing area has an air passage communicated with the air outlet, the back surface has a sinking platform and a sinking platform, the sinking platform has a through hole in its center, and the sinking platform has an air groove on its surface communicated with the air inlet.

3. The integrated device for opening formation and exhaust as claimed in claim 2, wherein the bayonet mechanism comprises a bayonet, a sliding sleeve, springs, a piston, a counter thread and a cover plate, the sliding sleeve is sleeved and fixed in a through hole formed in the sinking platform, the bayonet is a cylinder with a bayonet head at the front end, a threaded hole is formed in the tail end of the cylinder, the piston is clamped between the springs, the counter thread connects the piston with the threaded hole in the tail end of the bayonet, two ends of the spring are respectively abutted against the sliding sleeve and the cover plate, the cover plate is covered and sealed on the sinking platform formed on the back surface of the front seat, and an air flow groove is formed in the periphery of the piston.

4. The integrated opening and venting device according to claim 3, wherein the sealing mechanism is a heat sealing mechanism or a spray sealing mechanism.

5. The device as claimed in claim 4, wherein the heat sealing mechanism comprises a front sealing frame, a rear sealing frame and a heating wire, the front sealing frame and the rear sealing frame are respectively disposed at the corresponding ends of the front section component and the rear section component, and the heating wire is respectively disposed inside the front sealing frame and the rear sealing frame.

6. The device as claimed in claim 4, wherein the injection sealing mechanism is provided with sealing glue ports at the bottom of the front seat and the back seat, the sealing glue ports are connected with L-shaped elbows, the L-shaped elbows are connected with sealing glue needles, the sealing glue needles have curved shapes with radian, and the needles are located below the piercing openings of the piercing knives.

7. The integrated apparatus for opening formation and air exhaust as claimed in claim 6, wherein the sealant needle is located about 5mm below the piercing opening of the lancet, and the needle is inclined upward by about 30 degrees.

8. The opening formation and exhaust integrated device according to claim 5, wherein the rear section component comprises a rear seat, and the rear seat is attached to the back surface of the rear sealing frame.

9. The opening formation and exhaust integrated device according to claim 8, further comprising a heat insulation plate, wherein the heat insulation plate is attached and arranged between the rear sealing frame and the rear seat.

10. The opening formation and exhaust integrated device according to claim 9, further comprising a stopper, wherein a bayonet counter bore is arranged on the end face of the stopper corresponding to the bayonet and is arranged between the rear sealing frame and the heat insulation plate in an attaching manner.