CN219350338U - Lithium ion battery negative pressure formation process electrolyte collection device - Google Patents
Lithium ion battery negative pressure formation process electrolyte collection device Download PDFInfo
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- CN219350338U CN219350338U CN202320750173.XU CN202320750173U CN219350338U CN 219350338 U CN219350338 U CN 219350338U CN 202320750173 U CN202320750173 U CN 202320750173U CN 219350338 U CN219350338 U CN 219350338U
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- 239000003792 electrolyte Substances 0.000 title claims abstract description 83
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 48
- 230000008569 process Effects 0.000 title claims abstract description 39
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 26
- 230000000149 penetrating effect Effects 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 4
- 238000002347 injection Methods 0.000 abstract description 16
- 239000007924 injection Substances 0.000 abstract description 16
- 239000007788 liquid Substances 0.000 abstract description 16
- 238000004140 cleaning Methods 0.000 abstract description 7
- 230000006378 damage Effects 0.000 abstract description 4
- 238000002425 crystallisation Methods 0.000 abstract description 3
- 230000008025 crystallization Effects 0.000 abstract description 3
- 230000005484 gravity Effects 0.000 description 7
- 230000009471 action Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 238000003487 electrochemical reaction Methods 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 229920001971 elastomer Polymers 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005187 foaming Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005381 potential energy Methods 0.000 description 2
- 229920006602 NBR/PVC Polymers 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229920000915 polyvinyl chloride Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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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 utility model provides an electrolyte collecting device for a negative pressure formation process of a lithium ion battery, and belongs to the technical field of batteries. The electrolyte collecting device for the negative pressure formation process of the lithium ion battery comprises a bearing piece, a collecting piece, a guide plate and a negative pressure suction nozzle. When the formation process is carried out, the exhaust hole of the negative pressure suction nozzle, the air flow hole and the liquid injection hole of the battery are aligned, the negative pressure suction nozzle sucks out gas in the battery, part of electrolyte in the battery is sucked into the negative pressure suction nozzle, and after the formation process is finished, the second side end of the guide plate and the first side end of the guide plate are obliquely upwards arranged, so that the electrolyte remained at the exhaust hole of the negative pressure suction nozzle falls into the guide groove, the collecting piece collects the electrolyte flowing down from the guide groove, the electrolyte remained at the negative pressure suction nozzle is prevented from dripping on the battery cover to corrode and pollute the battery, the problems of cleaning and collecting the electrolyte remained after formation are solved, the volatilization of the electrolyte is avoided, and pollution and harm to products and equipment caused by crystallization are avoided.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to an electrolyte collecting device for a negative pressure formation process of a lithium ion battery.
Background
In the existing lithium ion battery, the battery is charged and discharged by small current in the negative pressure working procedure, electrochemical reaction exists in the battery, gas is generated in the battery, the negative pressure suction nozzle sucks out the gas, electrolyte in the battery is easily sucked out of a part of the negative pressure suction nozzle, so that the electrolyte is remained in the negative pressure suction nozzle, the negative pressure suction nozzle is lifted after formation is finished, the residual electrolyte in the suction nozzle leaks on the surface of a top cover of the battery, corrosion of a top cover explosion-proof valve film and an electrode column is caused for a long time, the existing residual electrolyte treatment method that the suction nozzle drops on the top cover of the battery after formation is finished is manual wiping and cleaning, but the manual cleaning efficiency is low, the cleaning quality is unstable, the volatilization speed of the electrolyte is high, crystals are formed on the surface of the battery after the electrolyte is easy to volatilize in the high-temperature negative pressure formation working procedure, the increased cleaning difficulty is easy to adhere to the battery and equipment, and damage is caused to products and production equipment.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art and provide an electrolyte collecting device for a negative pressure formation process of a lithium ion battery.
The utility model provides an electrolyte collecting device for a negative pressure formation process of a lithium ion battery, which is used for sucking out gas in the battery during formation and collecting electrolyte remained by a negative pressure suction nozzle after formation, and is characterized in that: the device comprises a bearing piece, a collecting piece, a guide plate with a first side end rotatably connected to the bottom of the bearing piece and a negative pressure suction nozzle connected to the bearing piece, wherein the guide plate comprises a guide groove and an air flow hole which is arranged in a penetrating manner; the second side end of the guide plate can move towards the direction of the bearing piece until the guide plate is parallel to the bottom of the bearing piece, so that the air flow hole and the air outlet of the negative pressure suction nozzle are coaxially arranged; the second side end of the guide plate moves towards the direction away from the bearing piece to be inclined upwards with the first side end of the guide plate, so that electrolyte flowing out of the exhaust port of the negative pressure suction nozzle falls into the guide groove, and the collecting piece is used for collecting the electrolyte flowing down from the guide groove.
Further, the guide plate is a rubber-plastic guide plate.
Further, the bearing piece comprises an upper base, a lower base and a supporting structure, wherein two ends of the supporting structure are respectively connected with the upper base and the lower base, a first mounting groove is formed in the middle of the upper base in a penetrating mode, a second mounting groove is formed in the middle of the lower base in a penetrating mode, the width of the guide plate is smaller than or equal to that of the second mounting groove, the length of the guide plate is smaller than or equal to that of the second mounting groove, the first side end of the guide plate is connected to the inner side wall of the lower base in a rotating mode, and the top of the negative pressure suction nozzle is fixedly connected to the upper base.
Further, the supporting structure comprises a telescopic rod, and two ends of the telescopic rod are respectively connected with any one angle of the upper base and one angle of the lower base corresponding to the angle of the upper base.
Further, the supporting structure further comprises a reset spring sleeved on the part, extending into the space between the upper base and the lower base, of the negative pressure suction nozzle, and the top of the reset spring is connected with the bottom of the upper base, and the bottom of the reset spring is connected with the top of the lower base.
Further, the device also comprises a lifting piece used for lifting the negative pressure suction nozzle to move towards a direction away from the battery cover plate or pressing the negative pressure suction nozzle to move towards the battery cover plate.
Further, the battery cover is characterized by further comprising two stop plates for stopping the two side ends of the flow guide groove, wherein the two stop plates are arranged at the top of the flow guide plate, and the top of the stop plate is positioned below the top of the lower base when the flow guide plate rotates to be parallel to the battery cover.
Further, the collecting member is detachably connected to the second side end of the deflector.
Further, the lower base comprises a first connecting part and a second connecting part which are oppositely arranged, and further comprises a connecting shaft, one end of the connecting shaft is rotatably connected with the lower base, the other end of the connecting shaft is connected with the guide plate, and two ends of the connecting shaft are rotatably connected with the first connecting part, the second connecting part and the middle part of the connecting shaft respectively and are connected with the guide plate.
Further, a first mounting hole is formed in the first connecting portion, a second mounting hole is formed in the second connecting portion, the middle portion of the connecting shaft is fixedly connected to the guide plate, one end portion of the connecting shaft is rotatably connected to the first mounting hole, and the other end portion of the connecting shaft is rotatably connected to the second mounting hole.
The electrolyte collecting device for the negative pressure formation process of the lithium ion battery has the following beneficial effects:
when the formation process is carried out, the exhaust port of the negative pressure suction nozzle is aligned with the liquid injection port on the battery cover, the first side end of the guide plate is rotationally connected to the bottom of the bearing piece, the second side end of the guide plate moves towards the direction close to the bearing piece until the guide plate is parallel to the bottom of the bearing piece, then the first side end and the second side end of the guide plate are abutted against the battery cover, so that the air flow hole and the exhaust port are coaxially arranged, the exhaust port of the negative pressure suction nozzle, the air flow hole and the liquid injection port of the battery are aligned, the battery is charged and discharged by small current, electrochemical reaction is generated in the battery, gas in the battery is sucked out by the negative pressure suction nozzle, after the formation process is finished, the second side end of the guide plate moves towards the direction away from the bearing piece, and the second side end of the guide plate and the first side end of the guide plate are obliquely upwards arranged, so that the electrolyte remained at the exhaust port of the negative pressure suction nozzle falls into the guide groove, the collecting piece collects the electrolyte flowing down from the guide groove, the electrolyte can be prevented from flowing onto the battery cover, the residual electrolyte of the negative pressure suction nozzle is prevented from dripping onto the battery cover to corrode and pollute the battery, the problems of cleaning and collecting the residual electrolyte after formation are solved, the volatilization of the electrolyte is avoided, and pollution and harm to products and equipment caused by crystallization are avoided.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description, serve to explain the principles of the utility model. In the drawings, like reference numerals are used to identify like elements. The drawings, which are included in the description, illustrate some, but not all embodiments of the utility model. Other figures can be derived from these figures by one of ordinary skill in the art without undue effort.
Fig. 1 is a schematic structural diagram of an electrolyte collecting device for a negative pressure formation process of a lithium ion battery according to an embodiment of the present utility model;
fig. 2 is a schematic structural view of a negative pressure formation procedure electrolyte collecting device of a lithium ion battery according to an embodiment of the present utility model when a baffle is obliquely disposed on a battery cover;
fig. 3 is a schematic structural diagram of a negative pressure formation process electrolyte collecting device for a lithium ion battery according to an embodiment of the present utility model when a baffle plate abuts against a battery cover.
In the figure: the device comprises a battery cover 1, a liquid injection port 11, a negative pressure suction nozzle 2, a bearing piece 3, an upper base 31, a lower base 32, a telescopic rod 33, a return spring 34, a guide plate 4, a gas flow hole 41 and a connecting shaft 5.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model. It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be arbitrarily combined with each other.
Please refer to fig. 1-3. The electrolyte collecting device in the negative pressure formation process of the lithium ion battery is used for sucking out gas in the battery during formation and collecting electrolyte remained by the negative pressure suction nozzle 2 after formation, and is characterized in that: the device comprises a bearing piece 3, a collecting piece, a guide plate 4 with a first side end rotatably connected to the bottom of the bearing piece 3, and a negative pressure suction nozzle 2 connected to the bearing piece 3, wherein an airflow hole 41 is formed in the guide plate 4 in a penetrating manner; the second side end of the deflector 4 can move towards the direction of the bearing piece 3 until the deflector 4 is parallel to the bottom of the bearing piece 3, so that the airflow hole 41 and the exhaust port of the negative pressure suction nozzle 2 are coaxially arranged; the second side end of the deflector 4 moves towards the direction away from the bearing member 3 to be inclined upwards with the first side end of the deflector 4, so that the electrolyte flowing out of the air outlet of the negative pressure suction nozzle 2 falls into the diversion groove, and the collecting member is used for collecting the electrolyte flowing down from the diversion groove.
At the beginning of the battery formation process, the bearing piece 3 is abutted against the battery cover 1, the exhaust port and the liquid injection port 11 are aligned, the guide plate 4 is in contact with the battery cover 1, the negative pressure suction nozzle 2 descends, the included angle between the guide plate 4 and the battery cover 1 is gradually reduced until the guide plate is completely attached to the battery cover 1, at the moment, the exhaust port, the air injection hole and the liquid injection port 11 are aligned, the formation is convenient, the battery is charged and discharged by small current, electrochemical reaction is generated in the battery, gas is generated in the battery, the negative pressure suction nozzle 2 sucks the gas in the battery, and part of electrolyte in the battery is sucked into the negative pressure suction nozzle 2; after formation, the negative pressure suction nozzle 2 rises, the second side end of the guide plate 4 moves towards the direction away from the bearing piece 3 under the action of self gravity until the second side end of the guide plate 4 is obliquely upwards arranged with the first side end of the guide plate 4, the guide plate 4 is opened for a certain angle, at the moment, the exhaust port of the negative pressure suction nozzle 2 is aligned with the guide groove, electrolyte drops flowing out of the exhaust port of the negative pressure suction nozzle 2 fall into the guide groove and are discharged into the collecting piece along the guide groove, the electrolyte is prevented from directly dripping on the battery cover 1, and the electrolyte remained in the negative pressure suction nozzle 2 after formation is prevented from dripping on the battery cover 1 to corrode and pollute the battery.
Specifically, the carrier 3 is placed above the battery cover 1 during the battery formation procedure, and simultaneously, the exhaust port and the liquid injection port 11 of the negative pressure suction nozzle 2 are aligned, so that the exhaust port and the liquid injection port 11 are coaxially arranged, the negative pressure suction nozzle 2 is pushed to move towards the direction of the battery cover 1, the guide plate 4 rotates to be parallel to the bottom of the carrier 3, the first side end and the second side end of the guide plate 4 are both abutted to the battery cover 1, all parts of the guide plate 4 can be abutted to the battery cover 1, the air flow hole 41 on the guide plate 4 and the exhaust port of the negative pressure suction nozzle 2 are coaxially arranged, the air flow hole 41 and the exhaust port are aligned, the exhaust port, the air flow hole 41 and the liquid injection port 11 are coaxially arranged, the exhaust port, the air flow hole 41 and the liquid injection port 11 are aligned, the negative pressure suction nozzle 2 is convenient to suck gas in a battery, and part of electrolyte is sucked into the negative pressure suction nozzle 2 when the negative pressure suction nozzle 2 sucks gas. The first side end and the second side end of the deflector 4 are oppositely arranged, and because the first side end of the deflector 4 is rotationally connected to the bottom of the bearing piece 3, the gravity center of the deflector 4 is biased to the second side end, and the second side end of the deflector 4 is easy to move towards the direction away from the bearing piece 3 under the action of gravity, so that the second side end on the deflector 4 is inclined upwards to the first side end. After the formation process is finished, part of electrolyte can remain in the negative pressure suction nozzle 2, the negative pressure suction nozzle 2 is pulled upwards, the electrolyte remaining in the negative pressure suction nozzle 2 leaks on the surface of the battery cover 1, corrosion of a top cover explosion-proof valve film and an electrode column is caused for a long time, in order to prevent and solve the problems and risks, the negative pressure suction nozzle 2 is pulled to move upwards, the bearing piece 3 is driven to move upwards, the first side end of the guide plate 4 moves upwards along with the bearing piece 3, the second side end of the guide plate 4 moves towards a direction away from the bearing piece 3 under the action of self gravity, the second side end of the guide plate 4 is positioned below the first side end, the guide plate 4 is arranged obliquely upwards from the second side end to the first side end, the projection of an exhaust port on the negative pressure suction nozzle 2 is positioned below the airflow hole 41, the electrolyte drops remaining in the negative pressure suction nozzle 2 fall on the guide plate 4, the electrolyte does not flow downwards along with the guide plate 4 obliquely downwards arranged, the electrolyte cannot fall on the battery cover 1, the electrolyte cannot well separate from the battery cover 1, and the problem of pollution caused by gravity is reduced by the electrolyte is solved, and the method of automatic contact with the electrolyte is reduced.
The collecting member may be a collecting tank detachably connected to the second side end of the deflector 4.
Specifically, the collecting tank is detachably connected to the second side end of the baffle 4, and when the second side end of the baffle 4 moves in a direction away from the carrier 3 to be obliquely upward arranged with the first side end of the baffle 4, the collecting tank is connected to the baffle 4, so that the electrolyte is collected.
The area of the guide plate 4 can be larger than the area of the top of the battery cover 1, and the guide plate 4 can be a rubber-plastic guide plate.
Specifically, the rubber-plastic material is a mixed foaming material which is prepared by adopting high-quality rubber and polyvinyl chloride (NBR/PVC) as main materials, and through mixing, banburying, continuous extrusion, heating foaming and cooling slitting. The guide plate 4 is made of a combination material of plastic and rubber, so that the insulation performance is good, the corrosion reaction of electrolyte is prevented, and the air tightness of the combination of the negative pressure suction nozzle 2 and the guide plate 4 and the combination of the guide plate 4 and the battery liquid injection port 11 is ensured.
The carrier 3 may include an upper base 31, a lower base 32, and a supporting structure with two ends respectively connected to the upper base 31 and the lower base 32, where the middle of the upper base 31 is penetrated and provided with a first mounting groove, the middle of the lower base 32 is penetrated and provided with a second mounting groove, the width of the baffle 4 is less than or equal to the width of the second mounting groove, the length of the baffle 4 is less than or equal to the length of the second mounting groove, the first side end of the baffle 4 is rotationally connected to the inner side wall of the lower base 32, and the top of the negative pressure suction nozzle 2 is fixedly connected to the upper base 31.
Specifically, the first side end of the baffle 4 may be pivotally connected to the inner sidewall of the lower base 32 by a hinge. The upper chassis 31 may be parallel to the lower chassis 32, and the shape of the upper chassis 31 and the shape of the lower chassis 32 may be the same. The first side end of the deflector 4 is rotatably connected to the inner side wall of the lower base 32, that is, the first side end of the deflector 4 can be rotatably connected to the side wall of the lower base 32, which is close to the second installation groove, when the deflector 4 rotates to be parallel to the lower base 32, the deflector 4 is completely placed in the second installation groove, the top of the negative pressure suction nozzle 2 is fixedly connected to the upper base 31, the upper base 31 can be driven when the negative pressure suction nozzle 2 is pressed, the upper base 31 pushes the supporting structure, the supporting structure pushes the lower base 32, the lower base 32 moves towards the direction of the battery cover 1, the second side end of the deflector 4 is firstly contacted with the battery cover 1, after the lower base 32 continues to descend, the first side end of the deflector 4 is moved to be abutted to the battery cover 1, at the moment, the first side end and the second side end of the deflector 4 are both abutted to the battery cover 1, the deflector 4 is parallel to the lower base 32, and the deflector 4 is parallel to the battery cover 1, and the bottom of the deflector 4 is kept flush with the bottom of the lower base 32.
The support structure may include a telescopic rod 33, and both ends of the telescopic rod 33 are respectively connected to any one corner of the upper base 31 and one corner of the lower base 32 corresponding to the corner of the upper base 31.
Specifically, the upper base 31 is parallel to the lower base 32, the upper base 31 and the lower base 32 have a plurality of angles correspondingly arranged, two ends of the telescopic rod 33 are respectively corresponding to one angle of the upper base 31 and one angle of the lower base 32 corresponding to the angle of the upper base 31, and the supporting structure can be a telescopic rod 33 which is compressed when stressed and automatically stretches when the force is released. When the negative pressure suction nozzle 2 is pressed, the upper base 31 is lowered, the telescopic rod 33 is compressed, and when the negative pressure suction nozzle 2 is lifted, the upper base 31 is raised, and the telescopic rod 33 is extended. Pressing negative pressure suction nozzle 2 descends, bearing structure shortens, and the second side end of guide plate 4 moves to guide plate 4 and is on a parallel with lower base 32 towards the direction of lower base 32 this moment, and the first side end and the second side end of guide plate 4 all butt in battery cover 1, guide plate 4 bottom and battery cover 1 close-coupled, the air current hole on the guide plate 4 aligns with the notes liquid mouth 11 on the battery cover 1, and negative pressure suction nozzle 2 descends to negative pressure suction nozzle 2 bottom butt in guide plate 4 top, negative pressure suction nozzle 2 and guide plate 4 close-fit, and the gas vent of negative pressure suction nozzle 2 aligns with the air current hole 41 of guide plate 4.
The number of the telescopic rods 33 may be four.
Specifically, the upper base 31 and the lower base 32 each include four sides, and then the upper base 31 and the lower base 32 each include four corners, and four telescopic rods 33 are respectively connected to the four corners of the upper base 31 and the lower base 32, so that the upper base 31 and the lower base 32 are better connected and supported.
The support structure may further include a return spring 34 sleeved on a portion of the negative pressure suction nozzle 2 extending between the upper base 31 and the lower base 32, wherein the top of the return spring 34 is connected to the bottom of the upper base 31, and the bottom is connected to the top of the lower base 32.
Specifically, in order to make the electrolyte flowing out of the exhaust port of the negative pressure suction nozzle 2 pass through the airflow hole 41 and enter the liquid injection port 11 better, the bottom of the negative pressure suction nozzle 2 extends between the upper base 31 and the lower base 32. When the support structure comprises the telescopic rods 33 with two ends respectively connected with the upper base 31 and the lower base 32, the top of the return spring 34 can be abutted against the bottom of the upper base 31 and the top of the lower base 32, and when the support structure only comprises the return spring 34, the top of the return spring 34 is fixedly connected with the bottom of the upper base 31 and the bottom of the lower base 32. The lower chassis 32 may include a first connection portion and a second connection portion which are disposed opposite to each other, a third connection portion having both ends connected to one end of the first connection portion and one end of the second connection portion, and a fourth connection portion having both ends connected to the other end of the first connection portion and the other end of the second connection portion, respectively, the upper chassis 31 may include a fifth connection portion disposed corresponding to the first connection portion, a sixth connection portion disposed corresponding to the second connection portion, a seventh connection portion disposed corresponding to the third connection portion, and an eighth connection portion disposed corresponding to the fourth connection portion, respectively, the first side end of the baffle 4 is rotatably connected to the first connection portion, the second side end of the baffle 4 is disposed opposite to the second connection portion when the baffle 4 is rotated into the first installation groove, the bottom of the return spring 34 may be connected to the first connection portion and the second connection portion, the top may be connected to the fifth connection portion and the sixth connection portion, the bottom of the return spring 34 may also be connected to the third connection portion and the fourth connection portion, and the top may also be connected to the seventh connection portion and the eighth connection portion, respectively.
The electrolyte collecting device for the negative pressure formation process of the lithium ion battery in the present embodiment may further include a lifting member for lifting the negative pressure suction nozzle 2 to move in a direction away from the battery cover 1 or for pressing the negative pressure suction nozzle 2 to move in a direction toward the battery cover 1.
Specifically, the lifting member presses the negative pressure suction nozzle 2, thereby pushing the negative pressure suction nozzle 2 to move downward, and the lifting member lifts the negative pressure suction nozzle 2, thereby pulling the negative pressure suction nozzle 2 to move upward. The lifting member may be a pneumatic cylinder or a hydraulic cylinder.
As an electrolyte collecting device in the negative pressure formation process of the lithium ion battery in this embodiment, the electrolyte collecting device may further include two stop plates for stopping the two side ends of the guide groove, where the two stop plates are disposed at the top of the guide plate 4, and the top of the stop plate is located below the top of the lower base 32 when the guide plate 4 rotates to be parallel to the battery cover 1.
Specifically, the stop plate can prevent the electrolyte from splashing towards the two sides of the diversion groove, so that the electrolyte is prevented from splashing to the top of the diversion plate 4 and then flows to the battery cover 1.
The electrolyte collecting device for the negative pressure formation process of the lithium ion battery in this embodiment may further include a connecting shaft 5 having one end rotatably connected to the lower base 32 and the other end connected to the baffle 4.
The lower base 32 may include a first connecting portion and a second connecting portion disposed opposite to each other, and further includes a connecting shaft 5 with two ends rotatably connected to the first connecting portion and the second connecting portion, and a middle portion connected to the deflector 4.
The first connecting part can be provided with a first mounting hole, the second connecting part is provided with a second mounting hole, the middle part of the connecting shaft 5 is fixedly connected with the guide plate 4, one end part is rotationally connected with the first mounting hole, and the other end part is rotationally connected with the second mounting hole.
Specifically, a first bearing may be disposed in the first mounting hole, one end of the connecting shaft 5 may be sleeved on an inner ring of the first bearing, a second bearing may be disposed in the second mounting hole, and another end of the connecting shaft 5 may be sleeved on an inner ring of the second bearing.
Specifically, the device adopts the design of an automatic reset mechanism, the reset spring 34 is compressed in the formation process, the negative pressure suction nozzle 2 is tightly combined with the guide plate 4, meanwhile, the air flow hole 41 on the guide plate 4 is tightly combined with the liquid injection port 11 to ensure the normal operation of the negative pressure formation process, after the negative pressure formation process is finished, the negative pressure suction nozzle 2 is lifted, the reset spring 34 is reset, electrolyte in the negative pressure suction nozzle 2 drops in the groove on the guide plate 4, meanwhile, the guide plate 4 is opened for a certain angle under the action of gravity, and the electrolyte in the guide plate 4 works and flows into the collecting tank through gravitational potential energy, so that the electrolyte is prevented from being directly exposed on the battery cover 1; the guide plate 4 is made of a plastic and rubber combined material, so that not only is the insulation performance good, but also the corrosion reaction of electrolyte is prevented, and the air tightness of the combination of the negative pressure suction nozzle 2 and the guide plate 4 and the combination of the guide plate 4 and the battery liquid injection port 11 is ensured; the application is simple in production, can be recycled, is suitable for various formation suction nozzles, and is beneficial to batch production.
The specific operation process is as follows: when the negative pressure formation process of the battery starts, the negative pressure suction nozzle 2 descends, the guide plate 4 is in contact with the battery cover 1, along with the reduction of the height of the negative pressure suction nozzle 2, the included angle between the guide plate 4 and the battery cover 1 gradually reduces until the guide plate is completely attached to the battery cover 1, meanwhile, the air flow hole 41 is matched with the liquid injection hole 11 in a concentric shaft mode, the height of the negative pressure suction nozzle 2 continues to be reduced, the linkage reset spring 34 and the telescopic rod 33 are compressed, finally, the negative pressure suction nozzle 2 is tightly attached to the guide plate 4 to ensure air tightness, the battery is charged and discharged by small current, electrochemical reaction is generated in the battery, gas is generated in the battery, the negative pressure suction nozzle 2 sucks the gas in the battery, and part of electrolyte in the battery is sucked into the negative pressure suction nozzle 2; when the negative pressure formation process of the battery is finished, the negative pressure suction nozzle 2 ascends, the return spring 34 returns, and at the moment, the electrolyte remained in the negative pressure suction nozzle 2 gradually drops into the flow guide groove on the flow guide plate 4, so that the electrolyte is prevented from directly contacting with the battery cover 1. Along with the continuous rising of the negative pressure suction nozzle 2, the return spring 34 returns to the proper position, the tight combination of the guide plate 4 and the battery cover 1 is canceled, and under the action of gravity, the guide plate 4 is opened for a certain angle, electrolyte is acted by gravitational potential energy and is discharged into a collecting tank along the guide groove of the guide plate 4, so that the electrolyte is prevented from directly dripping on the battery cover 1, the residual electrolyte of the suction nozzle after formation is prevented from dripping on the battery cover 1 to corrode and pollute the battery, the cleaning and collecting problems of the residual electrolyte after formation are solved, the volatilization of the electrolyte is avoided, and the pollution and harm to products and equipment caused by crystallization are avoided.
The above description may be implemented alone or in various combinations and these modifications are within the scope of the present utility model.
It should be noted that, in the description of the present application, the terms "upper end," "lower end," and "bottom end" of the indicated orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the application is conventionally put in use, merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the device to be referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting. Although the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model.
Claims (10)
1. The utility model provides a lithium ion battery negative pressure formation process electrolyte collection device for with the gas suction in the battery when formation and collect negative pressure suction nozzle (2) remaining electrolyte when formation is finished, its characterized in that: the device comprises a bearing piece (3), a collecting piece, a guide plate (4) with a first side end rotatably connected to the bottom of the bearing piece (3) and a negative pressure suction nozzle (2) connected to the bearing piece (3), wherein the guide plate (4) comprises a guide groove and an air flow hole (41) penetrating through the guide groove; the second side end of the guide plate (4) can move towards the direction of the bearing piece (3) until the guide plate (4) is parallel to the bottom of the bearing piece (3), so that the airflow hole (41) and the exhaust port of the negative pressure suction nozzle (2) are coaxially arranged; the second side end of the guide plate (4) moves towards the direction away from the bearing piece (3) to be inclined upwards with the first side end of the guide plate (4), so that electrolyte flowing out of the air outlet of the negative pressure suction nozzle (2) falls into the guide groove, and the collecting piece is used for collecting the electrolyte flowing down from the guide groove.
2. The lithium ion battery negative pressure formation process electrolyte collecting device as set forth in claim 1, wherein: the guide plate (4) is a rubber-plastic guide plate.
3. The lithium ion battery negative pressure formation process electrolyte collecting device according to claim 1 or 2, wherein: the bearing piece (3) comprises an upper base (31), a lower base (32), and supporting structures with two ends connected to the upper base (31) and the lower base (32) respectively, wherein a first mounting groove is formed in the middle of the upper base (31) in a penetrating mode, a second mounting groove is formed in the middle of the lower base (32) in a penetrating mode, the width of the guide plate (4) is smaller than or equal to that of the second mounting groove, the length of the guide plate is smaller than or equal to that of the second mounting groove, the first side end of the guide plate (4) is connected to the inner side wall of the lower base (32) in a rotating mode, and the top of the negative pressure suction nozzle (2) is fixedly connected to the upper base (31).
4. The lithium ion battery negative pressure formation process electrolyte collecting device as set forth in claim 3, wherein: the supporting structure comprises a telescopic rod (33), and two ends of the telescopic rod (33) are respectively connected with any one angle of the upper base (31) and one angle of the lower base (32) corresponding to the angle of the upper base (31).
5. The lithium ion battery negative pressure formation process electrolyte collecting device as set forth in claim 3, wherein: the supporting structure further comprises a return spring (34) sleeved on the part, extending into the space between the upper base (31) and the lower base (32), of the negative pressure suction nozzle (2), wherein the top of the return spring (34) is connected with the bottom of the upper base (31), and the bottom of the return spring is connected with the top of the lower base (32).
6. The lithium ion battery negative pressure formation process electrolyte collecting device according to claim 1 or 2, wherein: the battery cover also comprises a lifting piece used for lifting the negative pressure suction nozzle (2) to move towards a direction away from the battery cover (1) or pressing the negative pressure suction nozzle (2) to move towards the battery cover (1).
7. The lithium ion battery negative pressure formation process electrolyte collecting device as set forth in claim 3, wherein: the battery cover is characterized by further comprising two stop plates for stopping the two side ends of the flow guide groove, wherein the two stop plates are arranged at the top of the flow guide plate (4), and the top of the stop plate is positioned below the top of the lower base (32) when the flow guide plate (4) rotates to be parallel to the battery cover (1).
8. The lithium ion battery negative pressure formation process electrolyte collecting device according to claim 1 or 2, wherein: the collecting piece is detachably connected to the second side end of the guide plate (4).
9. The lithium ion battery negative pressure formation process electrolyte collecting device as set forth in claim 3, wherein: the lower base (32) comprises a first connecting part and a second connecting part which are oppositely arranged, and further comprises a connecting shaft (5) with one end rotatably connected to the lower base (32) and the other end connected to the guide plate (4), wherein two ends of the connecting shaft (5) are respectively rotatably connected to the first connecting part and the second connecting part, and the middle part of the connecting shaft is connected to the guide plate (4).
10. The lithium ion battery negative pressure formation process electrolyte collecting device as defined in claim 9, wherein: the first connecting part is provided with a first mounting hole, the second connecting part is provided with a second mounting hole, the middle part of the connecting shaft (5) is fixedly connected with the guide plate (4), one end part is rotationally connected with the first mounting hole, and the other end part is rotationally connected with the second mounting hole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320750173.XU CN219350338U (en) | 2023-04-07 | 2023-04-07 | Lithium ion battery negative pressure formation process electrolyte collection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320750173.XU CN219350338U (en) | 2023-04-07 | 2023-04-07 | Lithium ion battery negative pressure formation process electrolyte collection device |
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| CN219350338U true CN219350338U (en) | 2023-07-14 |
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| CN202320750173.XU Active CN219350338U (en) | 2023-04-07 | 2023-04-07 | Lithium ion battery negative pressure formation process electrolyte collection device |
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