CN112179402A - Evaluation equipment for lithium battery production and implementation method thereof - Google Patents
Evaluation equipment for lithium battery production and implementation method thereof Download PDFInfo
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- CN112179402A CN112179402A CN202010853337.2A CN202010853337A CN112179402A CN 112179402 A CN112179402 A CN 112179402A CN 202010853337 A CN202010853337 A CN 202010853337A CN 112179402 A CN112179402 A CN 112179402A
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- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 119
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 112
- 238000011156 evaluation Methods 0.000 title claims abstract description 31
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000001125 extrusion Methods 0.000 claims abstract description 53
- 239000003792 electrolyte Substances 0.000 claims abstract description 24
- 230000000694 effects Effects 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 26
- 230000005540 biological transmission Effects 0.000 claims description 23
- 238000012545 processing Methods 0.000 claims description 23
- 238000009434 installation Methods 0.000 claims description 12
- 230000007306 turnover Effects 0.000 claims description 7
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 238000012360 testing method Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000005538 encapsulation Methods 0.000 abstract 2
- 230000001360 synchronised effect Effects 0.000 abstract 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 4
- 229910001416 lithium ion Inorganic materials 0.000 description 4
- 238000003825 pressing Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910000733 Li alloy Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000001989 lithium alloy Substances 0.000 description 1
- 239000007773 negative electrode material Substances 0.000 description 1
- 239000011255 nonaqueous electrolyte Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000007774 positive electrode material Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- 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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- General Physics & Mathematics (AREA)
- Secondary Cells (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses evaluation equipment for lithium battery production and an implementation method thereof. This evaluation equipment and implementation method for lithium cell production is different from the aassessment to finished product battery capacity, battery internal resistance, battery voltage, battery current and temperature, mainly assesses the leakproofness of lithium cell encapsulation behind the encapsulation electrolyte, and it is rotatory through runing rest, drives the rotary column synchronous revolution, and the lithium cell is extruded to the push rod, fixes the lithium cell, by tensile stock under the effect of tensile quarter butt, drives the upset from top to bottom of extrusion chassis to whether the viewing seal appears revealing, improve the service quality of lithium cell.
Description
Technical Field
The invention relates to the technical field of lithium batteries, in particular to evaluation equipment for lithium battery production and an implementation method thereof.
Background
A lithium battery is a type of battery using a nonaqueous electrolyte solution, using lithium metal or a lithium alloy as a positive/negative electrode material. Lithium metal batteries were first proposed and studied by Gilbert n.lewis in 1912. In the 70 s of the 20 th century, m.s.whitetingham proposed and began to study lithium ion batteries. Because the chemical characteristics of lithium metal are very active, the requirements on the environment for processing, storing and using the lithium metal are very high. With the development of scientific technology, lithium batteries have become the mainstream.
Lithium batteries can be broadly classified into two types: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain lithium in the metallic state and are rechargeable. The fifth generation of rechargeable batteries, lithium metal batteries, was born in 1996, and the safety, specific capacity, self-discharge rate and cost performance of rechargeable batteries were all superior to those of lithium ion batteries. Due to its own high technical requirement limits, only a few countries of companies are producing such lithium metal batteries. The factors and indexes influencing the performance of the lithium battery are more and organically integrated, a single index cannot comprehensively and truly reflect the operation performance state of the lithium battery, meanwhile, the coupling relation among different indexes is complex, the operation performance state of the lithium battery cannot be simply and clearly evaluated objectively and comprehensively, and an index system and an evaluation method specially aiming at the comprehensive evaluation of the operation performance of the lithium battery are not available at home and abroad. Factors that generally evaluate the performance of a battery include: battery capacity, battery internal resistance, battery voltage, battery current and temperature, etc.
The lithium cell is adding in production, need pack the electrolyte to the lithium cell, after filling the electrolyte, need seal, how sealed effect, the naked eye is difficult to judge, if do not examine sealed effect, when packing is accomplished or is used, the condition such as the leakage appears taking place, there is great potential safety hazard, and sealed fastness leaf needs to its aassessment, the lithium cell is when using, receive the fracture that the extrusion caused, also quality when seriously influencing the use, therefore, in the processing of lithium cell, need still receive the extrusion degree to evaluate to the sealed effect of lithium cell, can suitably improve the manufacturing requirement of battery and or the safe use method that the lithium cell was formulated according to the evaluation result.
Disclosure of Invention
The invention aims to provide an evaluation device for lithium battery production and an implementation method thereof, which are different from the evaluation of finished product battery capacity, battery internal resistance, battery voltage, battery current and temperature, mainly evaluate the sealing performance of a lithium battery after the lithium battery is packaged with electrolyte, a rotary bracket rotates to drive a rotary column to synchronously rotate, a push rod extrudes the lithium battery to fix the lithium battery, a long stretching rod drives an extrusion chassis to turn over up and down under the action of a short stretching rod so as to check whether a sealing port leaks or not, the electrolyte shakes in the lithium battery through turning and shaking to evaluate the firmness of the sealing port, a pressure sensor is linearly connected with a signal processing device, the extruded pressure value is transmitted to the signal processing device so as to evaluate the extrusion force which can be borne by the lithium battery, and the firmness of sealing in the lithium battery processing process and the processing strength are timely adjusted according to the sealing condition of the sealing port, guarantee that the lithium cell of follow-up use can bear certain extrusion and rock, improve the service quality of lithium cell to solve the problem that proposes among the above-mentioned background art.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides an evaluation equipment is used in lithium cell production, includes the support cylinder, the output fixedly connected with connecting rod of support cylinder, the one end fixedly connected with go-between of connecting rod installs hoisting support on the go-between, one side fixedly connected with upset support of hoisting support upper end, hoisting support's lower extreme swing joint has the extrusion chassis, the first installation piece of the last fixed surface of hoisting support is connected with, the upper end fixedly connected with stand of first installation piece, stand through connection have the fixture block, stand through connection go-between, the fixture block parcel is in the outside of go-between, and the fixture block is connected with the go-between block, the first motor of the lower fixed surface of hoisting support upper end, the output fixedly connected with driving gear of first motor, the one end of upset support and one side swing joint.
Preferably, the upper surface of one end of the turning support is fixedly connected with a pull rod, the upper end of the pull rod is fixedly connected with the upper end of the hoisting support, one end of the turning support, which is close to the pull rod, is fixedly connected with a second mounting block, a transmission gear is movably connected onto the second mounting block, and the transmission gear is meshed with the driving gear.
Preferably, one side of the second mounting block is fixedly connected with an annular sliding ring, and the inner wall of the annular sliding ring is fixedly connected with a first limiting ring.
Preferably, one side of the transmission gear, which is close to the second mounting block, is provided with a first groove, a protruding round block is fixedly connected in the first groove, a second limiting ring is connected to the side wall of one end, which is far away from the transmission gear, of the protruding round block, the other side of the transmission gear is provided with a second groove, the center of the second groove is connected with a fixed round block, and a stretching short rod is fixedly connected to the fixed round block.
Preferably, the end of the short stretching rod, which is far away from the fixed round block, is hinged with a long stretching rod, the end of the long stretching rod, which is far away from the short stretching rod, is provided with a movable round hole, and the movable round hole is movably connected with one side of the extrusion chassis.
Preferably, the bilateral symmetry on extrusion chassis has the pivot, pivot and hoisting support's lower extreme swing joint, the central round hole has been seted up on the central point on extrusion chassis puts, circular spout has been seted up to a week of extrusion chassis upper surface, the spacing groove has been seted up on the inner wall of circular spout, swing joint has the runing rest in the circular spout, the motor groove has been seted up to one side on extrusion chassis, the second motor is installed to the motor inslot, the output fixedly connected with built-in gear of second motor, the upper end of built-in gear extends to in the circular spout, and the lower extreme meshing of built-in gear and runing rest, the upper surface on extrusion chassis has the rotary column through bearing swing joint, one side fixedly connected with hinge ring on extrusion chassis.
Preferably, the number of the rotary columns is three, the rotary columns are distributed at equal intervals, outer ring gears are fixedly connected to the rotary columns and meshed with the rotary support, push rods are fixedly connected to the upper ends of the rotary columns, pressure sensors are fixedly connected to one ends of the push rods, and the pressure sensors are linearly connected with the signal processing equipment.
Preferably, the inner wall of the rotating bracket is connected with first insections at equal intervals, the lower end of the rotating bracket is connected with second insections at equal intervals, and the second insections are meshed with the built-in gear.
Preferably, the lower end of the rotating support is movably connected with the circular sliding groove, the rotating support is fixedly connected with a third limiting ring at the position inside the circular sliding groove, and the third limiting ring is movably connected with the limiting groove.
Another technical problem to be solved by the present invention is to provide an implementation method of an evaluation device for lithium battery production, comprising the following steps:
s1: injecting electrolyte, conveying the sealed lithium battery to the lower part of the extrusion chassis through a conveying belt, driving the connecting rod and the connecting ring to move downwards by the supporting cylinder, driving the connecting ring to move downwards integrally, and enabling the lithium battery to penetrate through the central round hole;
s2: the second motor works to drive the built-in gear to rotate, the rotating support meshed with the built-in gear rotates along with the built-in gear, the first insection is meshed with the outer ring gear, the outer ring gear is driven to rotate through the first insection, the rotating column is rotated, and the lithium battery is clamped and fixed by the rotation of the push rod;
s3: the support cylinder drives the hoisting support to move upwards, the lithium battery moves upwards integrally, the first motor works, the driving gear rotates to drive the transmission gear to rotate, the short stretching rod rotates to drive the long stretching rod to rotate, and therefore the other end of the long stretching rod is controlled to drive the extrusion chassis to move upwards and turn over;
s4: checking whether the electrolyte leaks from the sealing opening to judge whether the electrolyte is sealed firmly, taking down the lithium battery if the electrolyte leaks, and evaluating that the packaging is unqualified;
s5: when not revealing, the work of second motor drives built-in gear rotatory, the push rod rotates and presss from both sides the lithium cell tightly, further extrude the outer wall of lithium cell, it reveals whether there is the electrolyte to look over lithium cell sealing department, pressure sensor and signal processing equipment linear connection, convey extruded pressure value to signal processing equipment to the extrusion force that the aassessment lithium cell can bear, after the aassessment, support cylinder drives hoisting support and moves down, place the lithium cell and send the area to, assess the test to next lithium cell.
Compared with the prior art, the invention has the beneficial effects that: the invention provides an evaluation device for lithium battery production and an implementation method thereof, which are different from the evaluation of finished battery capacity, battery internal resistance, battery voltage, battery current and temperature, mainly evaluate the sealing performance of a lithium battery after the lithium battery is packaged with electrolyte, a rotary bracket rotates to drive a rotary column to synchronously rotate, a push rod extrudes the lithium battery to fix the lithium battery, a long stretching rod drives an extrusion chassis to turn over up and down under the action of a short stretching rod, so as to check whether the sealing port leaks or not, the electrolyte shakes in the lithium battery through turning and shaking, evaluate the firmness of the sealing port, a pressure sensor is linearly connected with a signal processing device, the extruded pressure value is transmitted to the signal processing device to evaluate the extrusion force which can be born by the lithium battery, and the firmness of sealing and the processing strength during the lithium battery processing are timely adjusted according to the sealing condition of the sealing port, guarantee that the lithium cell of follow-up use can bear certain extrusion and rock, improve the service quality of lithium cell.
Drawings
FIG. 1 is an overall block diagram of the present invention;
FIG. 2 is a diagram of the working state of the present invention;
FIG. 3 is a structural view of a lifting bracket of the present invention;
FIG. 4 is a view of the mounting structure of the roll-over stand of the present invention;
FIG. 5 is a structural view of the roll-over stand of the present invention;
FIG. 6 is a structural view of a transmission gear of the present invention;
FIG. 7 is a view of the extrusion base pan installation of the present invention;
FIG. 8 is a view of the construction of the rotary column of the present invention;
FIG. 9 is a view of the extrusion base pan of the present invention;
fig. 10 is a view showing the structure of the swivel stand according to the present invention.
In the figure: 1. a support cylinder; 11. a connecting rod; 12. a connecting ring; 2. hoisting a support; 21. a first mounting block; 22. a column; 23. a clamping block; 24. a first motor; 241. a driving gear; 3. turning over the bracket; 31. a pull rod; 32. a second mounting block; 321. an annular runner; 322. a first spacing collar; 33. a transmission gear; 331. a first groove; 332. a convex round block; 333. a second limit ring; 334. a second groove; 335. fixing the round block; 34. stretching the short rod; 35. stretching a long rod; 351. a movable round hole; 4. extruding the chassis; 41. a central circular hole; 42. a circular chute; 43. a second motor; 431. a built-in gear; 44. turning the column; 441. an outer ring gear; 442. a push rod; 443. a pressure sensor; 45. a hinge ring; 5. rotating the bracket; 51. a first insection; 52. a second insection; 53. and a third limiting ring.
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.
Referring to fig. 1-3, an evaluation device for lithium battery production comprises a support cylinder 1, a connection rod 11 is fixedly connected to an output end of the support cylinder 1, the support cylinder 1 drives the connection rod 11 to ascend or descend integrally, a connection ring 12 is fixedly connected to one end of the connection rod 11, the connection ring 12 ascends or descends synchronously with the connection rod 11, a hoisting support 2 is installed on the connection ring 12, the connection ring 12 drives the hoisting support 2 to move integrally, a turning support 3 is fixedly connected to one side of an upper end of the hoisting support 2, a pressing chassis 4 is movably connected to a lower end of the hoisting support 2, the pressing chassis 4 can rotate, a first installation block 21 is fixedly connected to an upper surface of the hoisting support 2, a vertical column 22 is fixedly connected to an upper end of the first installation block 21, a fixture block 23 is connected to the vertical column 22 in a penetrating manner, the fixture block 23 can move on, the upright column 22 penetrates through the connecting ring 12, the clamping block 23 is wrapped outside the connecting ring 12, the clamping block 23 is connected with the connecting ring 12 in a clamping mode, the first motor 24 is fixedly connected to the lower surface of the upper end of the hoisting support 2, the driving gear 241 is fixedly connected to the output end of the first motor 24, the first motor 24 drives the driving gear 241 to rotate, the driving gear 241 drives the transmission gear 33 to rotate in a working mode, and one end of the overturning support 3 is movably connected with one side of the extrusion chassis 4.
Referring to fig. 4-6, a pull rod 31 is fixedly connected to the upper surface of one end of the turning bracket 3, the upper end of the pull rod 31 is fixedly connected to the upper end of the hoisting bracket 2, the pull rod 31 plays a role in strengthening structural firmness, the turning bracket 3 is prevented from deforming and bending by the pull rod 31, one end of the turning bracket 3 close to the pull rod 31 is fixedly connected to a second mounting block 32, a transmission gear 33 is movably connected to the second mounting block 32, the transmission gear 33 rotates on the second mounting block 32, the second mounting block 32 plays a role in mounting and fixing the transmission gear 33, the transmission gear 33 is meshed with a driving gear 241, the driving gear 241 drives the transmission gear 33 to rotate, an annular sliding ring 321 is fixedly connected to one side of the second mounting block 32, a first limiting ring 322 is fixedly connected to the inner wall of the annular sliding ring 321, a first groove 331 is formed in one side of the transmission gear 33 close to, the first groove 331 is movably connected with the second mounting block 32, a convex round block 332 is fixedly connected in the first groove 331, the convex round block 332 is movably connected with the annular sliding ring 321, the side wall of one end of the convex round block 332 far away from the transmission gear 33 is connected with a second limiting ring 333, the second limiting ring 333 prevents the transmission gear 33 from separating from the second mounting block 32, the other side of the transmission gear 33 is provided with a second groove 334, the center of the second groove 334 is connected with a fixed round block 335, the fixed round block 335 is fixedly connected with a short stretching rod 34, one end of the short stretching rod 34 far away from the fixed round block 335 is hinged with a long stretching rod 35, the transmission gear 33 drives the short stretching rod 34 to synchronously rotate when rotating, so that the long stretching rod 35 synchronously rotates, one end of the long stretching rod 35 far away from the short stretching rod 34 is provided with a movable round hole 351, the movable round hole 351 is movably connected with one side of the extrusion chassis 4, and under the, the extrusion chassis 4 is driven to turn up and down, so that whether the sealing port is leaked or not is checked.
Referring to fig. 7-9, the two sides of the extrusion chassis 4 are symmetrically connected with a rotating shaft, the extrusion chassis 4 can rotate around the rotating shaft, the rotating shaft is movably connected with the lower end of the hoisting support 2, the central position of the extrusion chassis 4 is provided with a central circular hole 41, the central circular hole 41 is used for lithium battery installation, and is convenient for lithium batteries to be inserted, a circle of the upper surface of the extrusion chassis 4 is provided with a circular sliding groove 42, the inner wall of the circular sliding groove 42 is provided with a limit groove, the circular sliding groove 42 is movably connected with a rotating support 5, the rotating support 5 rotates in the circular sliding groove 42, one side of the extrusion chassis 4 is provided with a motor groove, the motor groove is provided with a second motor 43, the output end of the second motor 43 is fixedly connected with a built-in gear 431, the second motor 43 drives the built-in gear 431 to rotate, the upper end of the built-, the built-in gear 431 rotates to drive the rotating bracket 5 to rotate, the upper surface of the extrusion chassis 4 is movably connected with rotating columns 44 through bearings, one side of the extrusion chassis 4 is fixedly connected with a hinged ring 45, the hinged ring 45 penetrates through a movable round hole 351 and is movably connected with the long extension rod 35, the long extension rod 35 drives the extrusion chassis 4 to turn over, the number of the rotating columns 44 is three, the rotating columns 44 are distributed at equal intervals, an outer ring gear 441 is fixedly connected onto the rotating columns 44, the outer ring gear 441 is meshed with the rotating bracket 5, the rotating bracket 5 can drive the outer ring gear 441 to rotate when rotating, so as to control the rotating columns 44 to rotate, a push rod 442 is fixedly connected onto the upper ends of the rotating columns 44, the push rod 442 is driven to rotate when the rotating columns 44 rotate, the lithium battery is extruded and fixed, one end of the push rod 442 is fixedly connected with a pressure sensor 443, the pressure sensor 443 is linearly connected with, thereby evaluating the compressive force that the lithium battery can withstand.
Referring to fig. 10, the inner wall of the rotating bracket 5 is equidistantly connected with first insections 51, the first insections 51 are engaged with the outer ring gear 441, the lower end of the rotating bracket 5 is equidistantly connected with second insections 52, the second insections 52 are engaged with the internal gear 431, the lower end of the rotating bracket 5 is movably connected with the circular sliding groove 42, the rotating bracket 5 is fixedly connected with a third limiting ring 53 at a position in the circular sliding groove 42, the third limiting ring 53 is movably connected with the limiting groove, and the third limiting ring 53 prevents the rotating bracket 5 from separating from the circular sliding groove 42.
In order to better show the implementation process of the evaluation equipment for lithium battery production, the embodiment now provides an implementation method of the evaluation equipment for lithium battery production, which includes the following steps:
the method comprises the following steps: the electrolyte is injected, the sealed lithium battery is conveyed to the lower part of the extrusion chassis 4 through the conveyer belt, continuous processing and evaluation of the lithium battery can be realized through the conveyer belt, the support cylinder 1 drives the connecting rod 11 and the connecting ring 12 to move downwards, the connecting ring 12 is driven to move downwards integrally, and the lithium battery penetrates through the central round hole 41;
step two: the second motor 43 works to drive the built-in gear 431 to rotate, the rotating bracket 5 meshed with the built-in gear 431 rotates along with the rotation, the first insection 51 is meshed with the outer ring gear 441, the outer ring gear 441 is driven to rotate through the first insection 51, the rotating column 44 is rotated, the lithium battery is clamped and fixed by the rotation of the push rod 442, the rotating bracket 5 rotates, the rotating column 44 can be synchronously driven to rotate, the lithium battery is clamped and fixed by the push rod 442, and the side wall of the lithium battery can be extruded by applying pressure to the lithium battery at the same time;
step three: the supporting cylinder 1 drives the hoisting support 2 to move upwards, the lithium battery moves upwards integrally, the first motor 24 works, the driving gear 241 rotates to drive the transmission gear 33 to rotate, the short stretching rod 34 rotates to drive the long stretching rod 35 to rotate, so that the other end of the long stretching rod 35 is controlled to drive the extrusion chassis 4 to move upwards and turn over, and the electrolyte shakes in the lithium battery through turning and shaking;
step four: checking whether the electrolyte leaks from the sealing opening to judge whether the electrolyte is sealed firmly, if so, taking down the lithium battery, evaluating that the packaging is unqualified, and improving the packaging strength or enhancing the packaging firmness;
step five: when not revealing, the work of second motor 43, it is rotatory to drive built-in gear 431, push rod 442 rotates and presss from both sides the lithium cell tightly, further extrude the outer wall of lithium cell, it reveals whether there is the electrolyte to look over the lithium cell department of sealing, through the external environment transform of extrusion simulation, pressure sensor 443 and signal processing equipment linear connection, convey extruded pressure value to signal processing equipment, with the extrusion force that the aassessment lithium cell can bear, appear revealing if department of sealing or lithium cell lateral wall, then need further strengthen the fastness of sealing or improve the resistant extrusion ability of lithium cell lateral wall, after the aassessment, support cylinder 1 drives hoisting support 2 and moves down, place the lithium cell and send the area on, evaluate the test to next lithium cell.
In summary, the following steps: the evaluation equipment for lithium battery production and the implementation method thereof are different from the evaluation of finished product battery capacity, battery internal resistance, battery voltage, battery current and temperature, mainly evaluate the sealing performance of the lithium battery after the electrolyte is packaged, the rotary bracket 5 rotates to drive the rotary column 44 to synchronously rotate, the push rod 442 extrudes the lithium battery to fix the lithium battery, the extrusion chassis 4 is driven to turn over up and down by the long stretching rod 35 under the action of the short stretching rod 34, so as to check whether the sealing port leaks or not, the electrolyte shakes in the lithium battery through turning and shaking, evaluate the firmness of the sealing port, the pressure sensor 443 is linearly connected with the signal processing equipment, the extruded pressure value is transmitted to the signal processing equipment, so as to evaluate the extrusion force which can be born by the lithium battery, and the firmness of sealing in the lithium battery processing process and the processing strength are timely adjusted according to the sealing condition of the sealing port, guarantee that the lithium cell of follow-up use can bear certain extrusion and rock, improve the service quality of lithium cell.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (10)
1. An evaluation equipment for lithium battery production, includes support cylinder (1), its characterized in that: the output end of the supporting cylinder (1) is fixedly connected with a connecting rod (11), one end of the connecting rod (11) is fixedly connected with a connecting ring (12), a hoisting support (2) is installed on the connecting ring (12), one side of the upper end of the hoisting support (2) is fixedly connected with a turning support (3), the lower end of the hoisting support (2) is movably connected with an extrusion chassis (4), the upper surface of the hoisting support (2) is fixedly connected with a first installation block (21), the upper end of the first installation block (21) is fixedly connected with a stand column (22), the stand column (22) is connected with a clamping block (23) in a penetrating manner, the stand column (22) penetrates through the connecting ring (12), the clamping block (23) is wrapped outside the connecting ring (12), the clamping block (23) is connected with the connecting ring (12) in a clamping manner, the lower surface of the upper end of the hoisting support (2) is fixedly, one end of the overturning bracket (3) is movably connected with one side of the extrusion chassis (4).
2. The evaluation device for lithium battery production as set forth in claim 1, wherein: the upper surface of one end of the overturning support (3) is fixedly connected with a pull rod (31), the upper end of the pull rod (31) is fixedly connected with the upper end of the hoisting support (2), one end of the overturning support (3) close to the pull rod (31) is fixedly connected with a second installation block (32), a transmission gear (33) is movably connected onto the second installation block (32), and the transmission gear (33) is meshed with the driving gear (241).
3. The evaluation device for lithium battery production as set forth in claim 2, wherein: one side fixedly connected with annular sliding ring (321) of second installation piece (32), fixed connection has first spacing collar (322) on annular sliding ring (321) inner wall.
4. The evaluation device for lithium battery production as set forth in claim 2, wherein: first recess (331) have been seted up to drive gear (33) one side near second installation piece (32), first recess (331) interior fixedly connected with protruding circle piece (332), be connected with second spacing collar (333) on protruding circle piece (332) keep away from the one end lateral wall of drive gear (33), second recess (334) have been seted up to the opposite side of drive gear (33), the center of second recess (334) is connected with fixed circle piece (335), fixedly connected with tensile quarter butt (34) on fixed circle piece (335).
5. The evaluation device for lithium battery production as set forth in claim 4, wherein: the one end hinge that fixed circle piece (335) were kept away from in tensile quarter butt (34) has tensile stock (35), and activity round hole (351) have been seted up to the one end that tensile quarter butt (34) was kept away from in tensile stock (35), activity round hole (351) and one side swing joint on extrusion chassis (4).
6. The evaluation device for lithium battery production as set forth in claim 1, wherein: the two sides of the extrusion chassis (4) are symmetrically connected with rotating shafts, the rotating shafts are movably connected with the lower end of the hoisting support (2), the central position of the extrusion chassis (4) is provided with a central round hole (41), a circle of the upper surface of the extrusion chassis (4) is provided with a circular sliding groove (42), the inner wall of the circular sliding groove (42) is provided with a limiting groove, the circular sliding groove (42) is internally and movably connected with a rotating support (5), one side of the extrusion chassis (4) is provided with a motor groove, a second motor (43) is installed in the motor groove, the output end of the second motor (43) is fixedly connected with a built-in gear (431), the upper end of the built-in gear (431) extends into the circular sliding groove, and the built-in gear (431) is meshed with the lower end of the rotating support (5), the upper surface of the extrusion chassis (4) is movably connected with a rotating column (44) through a bearing, and one side of the extrusion chassis (4) is fixedly connected with a hinged ring (45).
7. The evaluation device for lithium battery production as set forth in claim 6, wherein: the number of the rotating columns (44) is three, the rotating columns (44) are distributed at equal intervals, outer ring gears (441) are fixedly connected to the rotating columns (44), the outer ring gears (441) are meshed with the rotating support (5), push rods (442) are fixedly connected to the upper ends of the rotating columns (44), one ends of the push rods (442) are fixedly connected with pressure sensors (443), and the pressure sensors (443) are linearly connected with signal processing equipment.
8. The evaluation device for lithium battery production as set forth in claim 6, wherein: the inner wall of the rotating support (5) is connected with first insections (51) at equal intervals, the lower end of the rotating support (5) is connected with second insections (52) at equal intervals, and the second insections (52) are meshed with the built-in gear (431).
9. The evaluation device for lithium battery production as set forth in claim 6, wherein: the lower end of the rotating support (5) is movably connected with the circular sliding groove (42), the rotating support (5) is fixedly connected with a third limiting ring (53) in the position of the circular sliding groove (42), and the third limiting ring (53) is movably connected with the limiting groove.
10. A method of implementing the evaluation equipment for lithium battery production according to any one of claims 1 to 9, comprising the steps of:
s1: electrolyte is injected, the sealed lithium battery is conveyed to the lower part of the extrusion chassis (4) through a conveying belt, the support cylinder (1) drives the connecting rod (11) and the connecting ring (12) to move downwards, the connecting ring (12) is driven to move downwards integrally, and the lithium battery penetrates through the central circular hole (41);
s2: the second motor (43) works to drive the built-in gear (431) to rotate, the rotating bracket (5) meshed with the built-in gear (431) rotates along with the built-in gear, the first insection (51) is meshed with the outer ring gear (441), the outer ring gear (441) is driven to rotate through the first insection (51), the rotating column (44) rotates, and the push rod (442) rotates to clamp and fix the lithium battery;
s3: the supporting cylinder (1) drives the hoisting support (2) to move upwards, the lithium battery integrally moves upwards, the first motor (24) works, the driving gear (241) rotates to drive the transmission gear (33) to rotate, the short stretching rod (34) rotates to drive the long stretching rod (35) to rotate, and therefore the other end of the long stretching rod (35) is controlled to drive the extrusion chassis (4) to move upwards and turn over;
s4: checking whether the electrolyte leaks from the sealing opening to judge whether the electrolyte is sealed firmly, taking down the lithium battery if the electrolyte leaks, and evaluating that the packaging is unqualified;
s5: when not revealing, second motor (43) work, it is rotatory to drive built-in gear (431), push rod (442) rotate and press from both sides the lithium cell tightly, further extrude the outer wall of lithium cell, whether there is the electrolyte to reveal in the department of looking over the lithium cell seal, pressure sensor (443) and signal processing equipment linear connection, convey extruded pressure value to signal processing equipment, in order to evaluate the extrusion force that the lithium cell can bear, after the evaluation, support cylinder (1) drive hoisting support (2) and move down, place the lithium cell and bring to the conveyer, evaluate the test to next lithium cell.
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