CN114497922A - Battery pack vacuum liquid injection device and method - Google Patents
Battery pack vacuum liquid injection device and method Download PDFInfo
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- CN114497922A CN114497922A CN202210392316.4A CN202210392316A CN114497922A CN 114497922 A CN114497922 A CN 114497922A CN 202210392316 A CN202210392316 A CN 202210392316A CN 114497922 A CN114497922 A CN 114497922A
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- 239000007788 liquid Substances 0.000 title claims abstract description 118
- 238000002347 injection Methods 0.000 title claims abstract description 49
- 239000007924 injection Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 26
- 230000007246 mechanism Effects 0.000 claims abstract description 61
- 238000007789 sealing Methods 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 239000003792 electrolyte Substances 0.000 claims abstract description 13
- 230000002457 bidirectional effect Effects 0.000 claims description 19
- 238000000605 extraction Methods 0.000 claims description 13
- 238000005096 rolling process Methods 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 17
- 238000005086 pumping Methods 0.000 description 11
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 5
- 229910001416 lithium ion Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 4
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 3
- 235000017491 Bambusa tulda Nutrition 0.000 description 3
- 241001330002 Bambuseae Species 0.000 description 3
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 3
- 239000011425 bamboo Substances 0.000 description 3
- 230000000740 bleeding effect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 230000037452 priming Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/60—Arrangements or processes for filling or topping-up with liquids; Arrangements or processes for draining liquids from casings
- H01M50/609—Arrangements or processes for filling with liquid, e.g. electrolytes
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/058—Construction or manufacture
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Filling, Topping-Up Batteries (AREA)
Abstract
The invention relates to a vacuum liquid injection device and a method for a battery pack, wherein the vacuum liquid injection device for the battery pack comprises a base, a vertical plate which is fixedly arranged on the side part of the base and is vertical to the base, and a transverse plate which is movably arranged on the base through a thread lifting mechanism and is parallel to the base, the transverse plate is used for placing a battery, a liquid supply cylinder and an air exhaust cylinder are fixedly arranged on one side, facing the transverse plate, of the vertical plate, the liquid supply cylinder is used for containing electrolyte and is provided with an exhaust mechanism, when the battery is injected with liquid, the bottom outlet of the liquid supply cylinder is connected with the battery through an elastic sealing mechanism, an air exhaust mechanism for vacuumizing the battery is arranged on the air exhaust cylinder, and the air exhaust mechanism is connected with the exhaust mechanism through a one-way transmission mechanism, so that the synchronism of vacuumizing and liquid injection is realized, and only the vacuum in the battery is pumped, the process efficiency, the battery vacuum degree, the liquid injection absorbability, the product consistency and the product quality are improved.
Description
Technical Field
The invention relates to the technical field related to battery production and processing, in particular to a battery pack vacuum liquid injection device and method.
Background
A polymer lithium ion battery generally comprises a battery shell, a battery core and an electrolyte, wherein the battery core and the electrolyte are accommodated in the battery shell, and the battery core comprises a positive electrode, a negative electrode and a diaphragm positioned between the positive electrode and the negative electrode; the electrolyte plays a role in conducting electrons between the anode and the cathode of the polymer lithium ion battery, is used as a lithium ion current transmission medium in the charge and discharge processes of the battery, and is a guarantee for the polymer lithium ion battery to obtain the advantages of high voltage, high specific energy and the like. Therefore, in the production process of the polymer lithium ion battery, injection is a very important process operation.
The existing liquid injection technology generally comprises the steps that firstly, a battery and a liquid injection cup are vacuumized, a liquid inlet of the liquid injection cup is blocked after the vacuumization is finished, then, the liquid injection cup body is communicated with the atmosphere to enable the cup body to be in a normal pressure state, then, electrolyte is injected into the liquid injection cup, the liquid inlet of the liquid injection cup is opened after the liquid injection is finished, and at the moment, the liquid injection cup body is in a vacuum state, and differential pressure liquid injection is formed when the battery is in the normal pressure state; in the liquid injection mode, the vacuum pumping is performed firstly and then the liquid injection is performed, so that the overall equipment capacity is low, and the hardware cost is high; the vacuum pumping of the battery and the cup body is needed, the vacuum pumping volume is large, the energy consumption is high, and the time is long; the liquid injection cup body has more valves, the vacuum degree of the battery is influenced and cannot reach the ultimate vacuum, and finally, the absorption consistency of the product is poor.
Disclosure of Invention
The invention aims to provide a vacuum liquid injection device and a vacuum liquid injection method for a battery pack, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
a vacuum liquid injection device for a battery pack comprises a base, a vertical plate and a transverse plate, wherein the vertical plate is fixedly arranged on the side part of the base and is vertical to the side part of the base, the transverse plate is movably arranged on the base through a thread lifting mechanism and is parallel to the base, and the transverse plate is used for placing a battery;
a liquid supply cylinder and an air exhaust cylinder are fixedly arranged on one side, facing the transverse plate, of the vertical plate, the liquid supply cylinder is used for containing electrolyte, an exhaust mechanism is arranged on the liquid supply cylinder, and when a battery is filled, an outlet at the bottom of the liquid supply cylinder is connected with the battery through an elastic sealing mechanism;
and the air exhaust mechanism is connected with the exhaust mechanism through a one-way transmission mechanism.
As a further scheme of the invention: the exhaust mechanism comprises a piston disc which is arranged in the air exhaust cylinder in a sealing sliding mode and an air cylinder which is arranged on the vertical plate, the movable end of the air cylinder is fixed with the piston disc, and a first check valve and a second check valve are arranged on the top end and the side wall of the air exhaust cylinder respectively.
As a still further scheme of the invention: a disc is arranged in the liquid supply cylinder, the disc is in sliding fit with the inner wall of the liquid supply cylinder, an exhaust hole is formed in the center of the disc, a vertical pipe is fixedly installed on the exhaust hole in a vertical mode;
the exhaust mechanism comprises a rotating assembly and a moving assembly which are installed on the vertical plate, the moving assembly is connected with the vertical pipe, and the rotating assembly is connected with the one-way transmission mechanism.
As a still further scheme of the invention: the removal subassembly includes fixed mounting two guide bars, slip setting on the riser are two on the guide bar and with riser fixed connection's lifter plate, the lifter plate orientation one side of riser is fixed with two limiting plates.
As a still further scheme of the invention: the runner assembly is installed including rotating two drive wheels and roll connection on the riser are two the connecting piece of drive wheel, the fixed cylinder that is provided with on the connecting piece, two it has the clearance to reserve between the limiting plate, the cylinder stretch into to in the clearance and with two limiting plate sliding connection.
As a still further scheme of the invention: fixed mounting has the stand on the piston dish, one-way drive mechanism includes fixed mounting and installs rectangular board on the stand and rotation are installed ratchet on the riser, the axis of rotation of ratchet passes through bevel gear group and is connected with the drive belt the axis of rotation of drive wheel, a plurality of inclined grooves have been seted up to the equidistance on the rectangular board, and every all rotate in the inclined groove and install a pawl.
As a still further scheme of the invention: the elastic sealing mechanism comprises a liquid outlet pipe and a telescopic pipe, wherein the liquid outlet pipe is fixedly arranged at the bottom of the liquid supply cylinder and is communicated with the liquid supply cylinder, the telescopic pipe is sleeved with the liquid outlet pipe in a sealing and sliding mode, a valve is arranged on the liquid outlet pipe, a sealing ring is arranged at one end, away from the liquid supply cylinder, of the telescopic pipe, and a plurality of groups of elastic assemblies are arranged between the telescopic pipe and the liquid outlet pipe.
As a still further scheme of the invention: the elastic component comprises a guide pipe and a telescopic rod which are fixed on the liquid outlet pipe and the telescopic pipe respectively, the guide pipe is in sliding fit with the telescopic rod, springs are sleeved on the peripheries of the guide pipe and the telescopic rod, and two ends of each spring are connected with the guide pipe and the telescopic rod respectively.
As a still further scheme of the invention: the thread lifting mechanism comprises a bidirectional screw rod rotatably mounted on the base, a cross rod fixedly mounted on the base and two thread plates arranged on the bidirectional screw rod and the cross rod, and a driving motor with an output end connected with the bidirectional screw rod is mounted on the base;
still be provided with two sets of flexible subassemblies on the base, flexible subassembly includes vertical fixed mounting and is in deflector and the slip setting on the base are in the expansion plate in the deflector, the diaphragm is fixed the top of expansion plate, just the threading board passes through the backup pad with the expansion plate is connected, the both ends of backup pad respectively with the threading board with the expansion plate is articulated.
A method of vacuum priming a battery comprising the steps of:
placing a battery on a transverse plate, and enabling a thread driving mechanism to work to lift the battery;
step two, after the battery is hermetically connected with the liquid supply cylinder, opening a valve;
step three, vacuumizing the battery by an air exhaust mechanism, and simultaneously injecting liquid synchronously;
and step four, closing the valve, and driving the battery to descend by the thread driving mechanism to finish liquid injection.
Compared with the prior art, the invention has the beneficial effects that: the invention has novel design, when in use, the thread upgrading mechanism can lift the battery when working, the elastic sealing mechanism can ensure the sealed connection of the battery and the liquid supply cylinder, the exhaust mechanism works to vacuumize the battery, and liquid injection is carried out simultaneously along with the change of the internal pressure of the battery, thus realizing the synchronism of the vacuum pumping and the liquid injection, only vacuumizing the battery, and improving the process efficiency, the vacuum degree of the battery, the liquid injection absorbability, the product consistency and the quality.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a vacuum liquid injection device of a battery pack.
Fig. 2 is a schematic structural diagram of another angle of an embodiment of a vacuum liquid injection device for a battery pack.
Fig. 3 is a schematic structural diagram of another angle of an embodiment of a vacuum liquid injection device for a battery pack.
Fig. 4 is an enlarged view of a structure at a in fig. 1.
Fig. 5 is an enlarged view of the structure at B in fig. 1.
Fig. 6 is an enlarged view of the structure at C in fig. 1.
Fig. 7 is a schematic diagram of the internal structure of the air pumping cylinder in one embodiment of the vacuum liquid injection device for the battery pack.
Fig. 8 is an exploded view of the structure of an exhaust mechanism in one embodiment of the vacuum liquid injection device of the battery pack.
In the figure: 1. a base; 2. a vertical plate; 3. a transverse plate; 4. a liquid supply cylinder; 5. an air pumping cylinder; 6. a guide plate; 7. a retractable plate; 8. a bidirectional screw rod; 9. a cross bar; 10. a thread plate; 11. a drive motor; 12. a support plate; 13. a cylinder; 14. a first check valve; 15. a second one-way valve; 16. a piston disc; 17. a column; 18. a strip plate; 19. a pawl; 20. a ratchet wheel; 21. a bevel gear set; 22. a transmission belt; 23. a disc; 24. a riser; 25. a guide bar; 26. a lifting plate; 27. a drive wheel; 28. a connecting member; 29. a limiting plate; 30. a cylinder; 31. a liquid outlet pipe; 32. a telescopic pipe; 33. a valve; 34. a guide tube; 35. a telescopic rod.
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.
In addition, an element of the present invention may be said to be "fixed" or "disposed" to another element, either directly on the other element or with intervening elements present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Referring to fig. 1 to 8, in an embodiment of the present invention, a battery pack vacuum liquid injection device includes a base 1, a vertical plate 2 fixedly installed at a side portion of the base 1 and perpendicular to the base 1, and a horizontal plate 3 movably disposed on the base 1 through a screw thread lifting mechanism and parallel to the base 1, where the horizontal plate 3 is used for placing a battery.
Referring to fig. 1 again, the screw thread lifting mechanism includes a bidirectional screw 8 rotatably mounted on the base 1, a cross bar 9 fixedly mounted on the base 1, and two thread plates 10 disposed on the bidirectional screw 8 and the cross bar 9, and a driving motor 11 having an output end connected with the bidirectional screw 8 is mounted on the base 1;
still be provided with two sets of flexible subassemblies on the base 1, flexible subassembly includes vertical fixed mounting and is in deflector 6 and the slip setting on the base 1 are in expansion plate 7 among the deflector 6, diaphragm 3 is fixed the top of expansion plate 7, just thread plate 10 pass through backup pad 12 with expansion plate 7 is connected, the both ends of backup pad 12 respectively with thread plate 10 with expansion plate 7 is articulated.
It should be added that two hole sites for the bidirectional screw rod 8 and the cross rod 9 to pass through are formed on the thread plate 10, wherein a thread engaged with the bidirectional screw rod 8 is formed on an inner wall of the hole site for the bidirectional screw rod 8 to pass through.
When liquid is injected, a battery is placed on the transverse plate 3, the driving motor 11 drives the bidirectional screw rod 8 to rotate in the forward direction, the cross rod 9 guides the threaded plates 10, so that the two threaded plates 10 are simultaneously in threaded fit with the bidirectional screw rod 8 to move close to each other, the threaded plates 10 push the telescopic plates 7 to slide towards the outside of the guide plate 6 through the support plate 12, the transverse plate 3 drives the battery to gradually rise, otherwise, when the driving motor 11 drives the bidirectional screw rod 8 to rotate in the reverse direction, the transverse plate 3 and the battery gradually fall, and therefore, the lifting function of the battery is realized, after the battery contacts with the sealing ring on the telescopic tube 32, the telescopic tube 32 gradually moves into the liquid outlet tube 31 along with the continuous rising of the battery, the telescopic rod 35 slides towards the guide tube 34, the spring is compressed to store certain elastic potential energy, thereby ensuring the tightness of the connection and then starting the cylinder 13 to inject liquid by opening the valve 33.
The riser 2 orientation one side fixed mounting of diaphragm 3 has a liquid supply section of thick bamboo 4 and an exhaust column 5, liquid supply section of thick bamboo 4 is used for splendid attire electrolyte, and installs exhaust mechanism on it, when annotating the liquid to the battery, the bottom export of liquid supply section of thick bamboo 4 is connected with the battery through elasticity sealing mechanism, install the mechanism of bleeding that is used for carrying out the evacuation to the battery on the exhaust column 5, just the mechanism of bleeding is through one-way drive mechanism with exhaust mechanism connects.
Referring to fig. 7 again, the exhaust mechanism includes a piston disc 16 sealingly slidably disposed in the air extraction cylinder 5 and an air cylinder 13 mounted on the vertical plate 2, wherein a movable end of the air cylinder 13 is fixed to the piston disc 16, and a top end and a side wall of the air extraction cylinder 5 are respectively provided with a first check valve 14 and a second check valve 15.
When in use, a battery to be injected is placed on the transverse plate 3, the thread lifting mechanism works to drive the transverse plate 3 and the battery to vertically rise until the battery is connected with the bottom outlet of the liquid supply cylinder 4 through the elastic sealing mechanism, the first one-way valve 14 is connected with the battery, then the air cylinder 13 works to drive the piston disc 16 to slide in the air extraction cylinder 5 in a reciprocating manner, the first one-way valve 14 is conducted and the second one-way valve 15 is not conducted during the downward sliding process of the piston disc 16, so that the air in the battery is extracted into the air extraction cylinder 5, the air pressure in the battery is reduced, the electrolyte in the liquid supply cylinder 4 flows into the battery, the first one-way valve 14 is not conducted and the second one-way valve 15 is conducted during the upward sliding process of the piston disc 16, so that the air in the air extraction cylinder 5 is exhausted to the outside, and the effective vacuum pumping function of the battery is realized by the circulating and reciprocating manner, and the vacuum pumping and the liquid injection are simultaneously carried out, and only the vacuum pumping is carried out in the battery, so that the working procedure efficiency, the vacuum degree of the battery, the liquid injection absorbability, the product consistency and the product quality are improved.
Referring to fig. 1, 5 and 8 again, a disc 23 is disposed in the liquid supply cylinder 4, the disc 23 is in sliding fit with the inner wall of the liquid supply cylinder 4, an exhaust hole is disposed at the center of the disc 23, and a vertical pipe 24 is fixedly mounted on the exhaust hole and vertically and fixedly mounted on the disc 23. The exhaust mechanism comprises a rotating component and a moving component which are installed on the vertical plate 2, the moving component is connected with the vertical pipe 24, and the rotating component is connected with the one-way transmission mechanism.
The removal subassembly includes fixed mounting two guide bars 25, the slip setting on the riser 2 are two on the guide bar 25 and with riser 24 fixed connection's lifter plate 26, lifter plate 26 orientation one side of riser 2 is fixed with two limiting plates 29.
The rotating assembly comprises two driving wheels 27 and two connecting pieces 28, wherein the two driving wheels 27 and the two rolling connections are arranged on the vertical plate 2, a column body 30 is fixedly arranged on the connecting pieces 28, a gap is reserved between the limiting plates 29, and the column body 30 extends into the gap and is connected with the limiting plates 29 in a sliding mode.
The piston disc 16 slides upwards in the air extraction cylinder 5 so that in the process of exhausting air in the air extraction cylinder 5, the one-way transmission mechanism triggers to move to drive the driving wheel 27 to rotate, then the connecting piece 28 drives the column 30 to move, the column 30 is in sliding fit with the two limiting plates 29, so that the lifting plate 26 drives the vertical pipe 24 and the disc 23 to move downwards, the air in the liquid supply cylinder 4 is exhausted, the contact between electrolyte and moisture in the air is effectively reduced, and the degradation influence of the moisture on the performance of the battery is greatly reduced.
Referring to fig. 4 and 7 again, an upright post 17 is fixedly mounted on the piston disc 16, the one-way transmission mechanism includes a long strip 18 fixedly mounted on the upright post 17 and a ratchet 20 rotatably mounted on the vertical plate 2, a rotating shaft of the ratchet 20 is connected with a rotating shaft of the driving wheel 27 through a bevel gear set 21 and a transmission belt 22, a plurality of inclined grooves are equidistantly formed in the long strip 18, and a pawl 19 is rotatably mounted in each inclined groove.
The bevel gear set 21 comprises a first bevel gear coaxially and fixedly mounted with the ratchet wheel 20 and a second bevel gear rotatably mounted on the vertical plate 2, the second bevel gear is meshed with the first bevel gear, and the transmission belt 22 is used for connecting the second bevel gear with a rotating shaft of the driving wheel 27.
During the downward sliding process of the piston disc 16, namely the vacuum pumping process of the battery, in the process, the long strip plate 18 moves along with the piston disc 16, the pawl 19 turns over in the inclined groove during the contact with the ratchet wheel 20, and during the upward sliding process of the piston disc 16, the pawl 19 does not turn over in the inclined groove during the contact with the ratchet wheel 20, so that the ratchet wheel 20 rotates, correspondingly, the rotating shaft of the ratchet wheel 20 drives the driving wheel 27 to rotate through the bevel gear set 21 and the second transmission belt 22, and the disc 23 slides downwards in the liquid supply cylinder 4 for a certain distance, so that the contact between the electrolyte and the moisture in the air is reduced.
Referring to fig. 6 again, the elastic sealing mechanism includes a liquid outlet pipe 31 fixed at the bottom of the liquid supply cylinder 4 and communicated with the liquid supply cylinder, and an extension pipe 32 in sealing sliding fit with the liquid outlet pipe 31, a valve 33 is disposed on the liquid outlet pipe 31, a sealing ring is disposed at one end of the extension pipe 32 away from the liquid supply cylinder 4, and a plurality of sets of elastic components are disposed between the extension pipe 32 and the liquid outlet pipe 31. Elastic component is including fixing respectively drain pipe 31 with stand pipe 34 and telescopic link 35 on the flexible pipe 32, stand pipe 34 with telescopic link 35 sliding sleeve closes, and the periphery cover of the two is equipped with the spring, the both ends of spring respectively with stand pipe 34 with telescopic link 35 is connected.
The working principle of the device is as follows: when liquid is injected, a battery is placed on the transverse plate 3, the driving motor 11 drives the bidirectional screw rod 8 to rotate in the forward direction, the cross rod 9 guides the threaded plates 10, so that the two threaded plates 10 are simultaneously in threaded fit with the bidirectional screw rod 8 to move close to each other, the threaded plates 10 push the telescopic plates 7 to slide towards the outside of the guide plate 6 through the support plate 12, the transverse plate 3 drives the battery to gradually rise, otherwise, when the driving motor 11 drives the bidirectional screw rod 8 to rotate in the reverse direction, the transverse plate 3 and the battery gradually fall, and therefore, the lifting function of the battery is realized, after the battery contacts with the sealing ring on the telescopic tube 32, the telescopic tube 32 gradually moves into the liquid outlet tube 31 along with the continuous rising of the battery, the telescopic rod 35 slides towards the guide tube 34, the spring is compressed to store certain elastic potential energy, therefore, the connection tightness is ensured, and the air cylinder 13 can be started to inject liquid by opening the valve 33;
the air cylinder 13 works to drive the piston disc 16 to slide in the air extraction cylinder 5 in a reciprocating manner, the first one-way valve 14 is conducted and the second one-way valve 15 is not conducted in the downward sliding process of the piston disc 16, so that the air in the battery is extracted into the air extraction cylinder 5, the air pressure in the battery is reduced, the electrolyte in the liquid supply cylinder 4 flows into the battery, the first one-way valve 14 is not conducted and the second one-way valve 15 is conducted in the upward sliding process of the piston disc 16, so that the air in the air extraction cylinder 5 is exhausted to the outside, and the circulation is repeated, so that the effective vacuumizing function of the battery is realized, the vacuumizing and the liquid injection are simultaneously performed, and only the vacuum in the battery is pumped, so that the process efficiency, the battery vacuum degree, the liquid injection absorbability, the product consistency and the product quality are improved;
during the downward sliding process of the piston disc 16, namely the vacuum pumping process of the battery, in the process, the long strip plate 18 moves along with the piston disc 16, the pawl 19 turns over in the inclined groove during the contact with the ratchet wheel 20, and during the upward sliding process of the piston disc 16, the pawl 19 does not turn over in the inclined groove during the contact with the ratchet wheel 20, so that the ratchet wheel 20 rotates, correspondingly, the rotating shaft of the ratchet wheel 20 drives the driving wheel 27 to rotate through the bevel gear set 21 and the second transmission belt 22, the connecting piece 28 drives the cylinder 30 to move, the cylinder 30 is in sliding fit with the two limiting plates 29, the lifting plate 26 drives the stand pipe 24 and the disc 23 to move downwards, the air in the liquid supply cylinder 4 is exhausted, the contact between the electrolyte and the moisture in the air is effectively reduced, and the influence of the moisture on the performance of the battery is greatly reduced.
A method of vacuum priming a battery comprising the steps of:
step one, placing a battery on a transverse plate, and enabling a thread driving mechanism to work to lift the battery;
step two, after the battery is hermetically connected with the liquid supply cylinder, opening a valve;
step three, vacuumizing the battery by an air exhaust mechanism, and simultaneously injecting liquid synchronously;
and step four, closing the valve, and driving the battery to descend by the thread driving mechanism to finish liquid injection.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. The vacuum liquid injection device for the battery pack is characterized by comprising a base (1), a vertical plate (2) and a transverse plate (3), wherein the vertical plate (2) is fixedly installed on the side portion of the base (1) and is perpendicular to the side portion of the base (1), the transverse plate (3) is movably arranged on the base (1) through a thread lifting mechanism and is parallel to the base (1), and the transverse plate (3) is used for placing a battery;
a liquid supply cylinder (4) and an air extraction cylinder (5) are fixedly mounted on one side, facing the transverse plate (3), of the vertical plate (2), the liquid supply cylinder (4) is used for containing electrolyte, an exhaust mechanism is mounted on the liquid supply cylinder, and when a battery is filled with liquid, an outlet at the bottom of the liquid supply cylinder (4) is connected with the battery through an elastic sealing mechanism;
and an air exhaust mechanism for vacuumizing the battery is installed on the air exhaust tube (5), and the air exhaust mechanism is connected with the exhaust mechanism through a one-way transmission mechanism.
2. The battery pack vacuum liquid injection device according to claim 1, wherein the exhaust mechanism comprises a piston disc (16) which is arranged in the air extraction cylinder (5) in a sealing and sliding manner and an air cylinder (13) which is installed on the vertical plate (2), the movable end of the air cylinder (13) is fixed with the piston disc (16), and the top end and the side wall of the air extraction cylinder (5) are respectively provided with a first one-way valve (14) and a second one-way valve (15).
3. The battery pack vacuum liquid injection device according to claim 2, wherein a disc (23) is arranged in the liquid supply cylinder (4), the disc (23) is in sliding fit with the inner wall of the liquid supply cylinder (4), an exhaust hole is formed in the center of the disc (23), the exhaust hole is fixedly installed, and a vertical pipe (24) is vertically and fixedly installed on the disc (23);
the exhaust mechanism comprises a rotating assembly and a moving assembly which are installed on the vertical plate (2), the moving assembly is connected with the vertical pipe (24), and the rotating assembly is connected with the one-way transmission mechanism.
4. The battery pack vacuum liquid injection device according to claim 3, wherein the moving assembly comprises two guide rods (25) fixedly mounted on the vertical plate (2), and a lifting plate (26) slidably disposed on the two guide rods (25) and fixedly connected to the vertical pipe (24), and two limiting plates (29) are fixed to one side of the lifting plate (26) facing the vertical plate (2).
5. The battery pack vacuum liquid injection device according to claim 4, wherein the rotating assembly comprises two driving wheels (27) rotatably mounted on the vertical plate (2) and a connecting member (28) for rolling and connecting the two driving wheels (27), a column (30) is fixedly arranged on the connecting member (28), a gap is reserved between the two limiting plates (29), and the column (30) extends into the gap and is slidably connected with the two limiting plates (29).
6. The battery pack vacuum liquid injection device according to claim 5, wherein an upright post (17) is fixedly mounted on the piston disc (16), the one-way transmission mechanism comprises a long strip plate (18) fixedly mounted on the upright post (17) and a ratchet wheel (20) rotatably mounted on the vertical plate (2), a rotating shaft of the ratchet wheel (20) is connected with a transmission belt (22) through a bevel gear set (21) and a rotating shaft of the driving wheel (27), a plurality of inclined grooves are equidistantly formed in the long strip plate (18), and a pawl (19) is rotatably mounted in each inclined groove.
7. The battery pack vacuum liquid injection device according to claim 1, wherein the elastic sealing mechanism comprises a liquid outlet pipe (31) fixed at the bottom of the liquid supply cylinder (4) and communicated therewith, and a telescopic pipe (32) hermetically and slidably sleeved with the liquid outlet pipe (31), a valve (33) is arranged on the liquid outlet pipe (31), a sealing ring is arranged at one end of the telescopic pipe (32) far away from the liquid supply cylinder (4), and a plurality of groups of elastic components are arranged between the telescopic pipe (32) and the liquid outlet pipe (31).
8. The battery pack vacuum liquid injection device according to claim 7, wherein the elastic assembly comprises a guide tube (34) and a telescopic rod (35) respectively fixed on the liquid outlet tube (31) and the telescopic tube (32), the guide tube (34) and the telescopic rod (35) are slidably sleeved, springs are sleeved on the peripheries of the guide tube and the telescopic rod, and two ends of each spring are respectively connected with the guide tube (34) and the telescopic rod (35).
9. The battery pack vacuum liquid injection device according to claim 1, wherein the thread lifting mechanism comprises a bidirectional screw rod (8) rotatably mounted on the base (1), a cross rod (9) fixedly mounted on the base (1), and two thread plates (10) arranged on the bidirectional screw rod (8) and the cross rod (9), and a driving motor (11) with an output end connected with the bidirectional screw rod (8) is mounted on the base (1);
still be provided with two sets of flexible subassemblies on base (1), flexible subassembly includes vertical fixed mounting and is in deflector (6) on base (1) and slip setting are in expansion plate (7) in deflector (6), diaphragm (3) are fixed the top of expansion plate (7), just threaded plate (10) through backup pad (12) with expansion plate (7) are connected, the both ends of backup pad (12) respectively with threaded plate (10) with expansion plate (7) are articulated.
10. The method for injecting liquid by using the battery pack vacuum liquid injection device according to claim 1, is characterized by comprising the following steps of:
placing a battery on a transverse plate, and enabling a thread driving mechanism to work to lift the battery;
step two, after the battery is hermetically connected with the liquid supply cylinder, opening a valve;
step three, vacuumizing the battery by an air exhaust mechanism, and simultaneously injecting liquid synchronously;
and step four, closing the valve, and driving the battery to descend by the thread driving mechanism to finish liquid injection.
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| CN114497922B (en) | 2022-06-17 |
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Address after: 518104 Room 201, No. 5, Central Road, Wanfeng community, Xinqiao street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Platinum Intelligent Equipment Co.,Ltd. Address before: 518100 201, No. 5, Wanfeng Community Center Road, Xinqiao street, Bao'an District, Shenzhen, Guangdong Patentee before: SHENZHEN BROTHERS AUTOMATION TECHNOLOGY CO.,LTD. |