CN114353677B - Lithium battery shaping testing device - Google Patents
Lithium battery shaping testing device Download PDFInfo
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- CN114353677B CN114353677B CN202111611283.XA CN202111611283A CN114353677B CN 114353677 B CN114353677 B CN 114353677B CN 202111611283 A CN202111611283 A CN 202111611283A CN 114353677 B CN114353677 B CN 114353677B
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- 238000007493 shaping process Methods 0.000 title claims abstract description 101
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 100
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 100
- 238000012360 testing method Methods 0.000 title claims abstract description 62
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000007789 sealing Methods 0.000 claims description 15
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 claims description 13
- 229910001416 lithium ion Inorganic materials 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005259 measurement Methods 0.000 description 6
- 230000004888 barrier function Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012956 testing procedure Methods 0.000 description 1
Classifications
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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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- 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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- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention provides a lithium battery shaping testing device, which comprises a square box-shaped device body, wherein a lithium battery clamping component and a lithium battery shaping device are arranged on the left side in the device body, a data reading component is arranged on the right side in the device body, and the lithium battery shaping device is arranged at the center of the lithium battery clamping component; the lithium battery clamping assembly is connected with the data reading assembly through a connecting rod assembly, and the connecting rod assembly consists of a first connecting rod and a second connecting rod which are identical and are arranged in a cross X-shaped mode. The lithium battery shaping testing device is compact in structure, high in automation degree, high in accuracy and high in stability, and the shaping working procedure and the testing working procedure of the lithium battery are effectively combined; the method for amplifying and reading the data has the advantages of higher testing precision, higher efficiency, good universality and convenient use.
Description
Technical Field
The invention belongs to the technical field of battery production test, and particularly relates to a lithium battery shaping test device.
Background
The lithium battery has the remarkable advantages of high energy density, small self-discharge, excellent cycle performance, high charging efficiency, long service life and the like, and is increasingly widely applied in the fields of electronic products, electric vehicles, aerospace, military and the like.
In the production and processing process of lithium batteries, the lithium batteries are required to be shaped and tested to be qualified or not, the degree of automation in the manufacturing and production process of the lithium batteries is low at present, the shaping process and the testing process are separately carried out, the labor intensity of workers is increased, and the production efficiency is reduced. In addition, in the current testing procedure, the appearance size of the shaped lithium battery is measured mainly through manually adopting a caliper, so that the manual measurement error is large, and the production efficiency is low.
Disclosure of Invention
The invention provides a lithium battery shaping testing device, which comprises a square box-shaped device body, wherein a lithium battery clamping component and a lithium battery shaping device are arranged on the left side inside the device body, a data reading component is arranged on the right side inside the device body, and the lithium battery shaping device is arranged at the center of the lithium battery clamping component; the lithium battery clamping assembly is connected with the data reading assembly through a connecting rod assembly, and the connecting rod assembly consists of a first connecting rod and a second connecting rod which are identical and are arranged in a cross X-shaped mode.
Further, the lithium battery shaping device comprises a shaping fixed base and a shaping movable base, wherein a lower die and an upper die are respectively arranged on the upper end face of the shaping fixed base and the lower end face of the shaping movable base, the upper die is arranged right above the lower die, the upper end face of the shaping movable base is provided with a telescopic device, and heating devices are arranged in the lower die and the upper die.
Further, the lithium battery clamping assembly comprises a first limiting clamping plate and a second limiting clamping plate, and the first limiting clamping plate and the second limiting clamping plate are symmetrically arranged on the front side and the rear side of the shaping fixing base; the device is characterized in that two mutually parallel clamping telescopic rods are arranged on the rear end face of the first limiting clamping plate and the front end face of the second limiting clamping plate, and the rear ends of the clamping telescopic rods are all arranged on the inner wall of the device body.
Further, the center of the front end face of the first limiting clamping plate and the center of the rear end face of the second limiting clamping plate are respectively provided with a clamping tool bit, pressure sensors are respectively arranged on the clamping tool bits, and the clamping telescopic rod is controlled to stretch out and draw back through a clamping telescopic hydraulic motor.
Further, the data reading assembly comprises two slide bars I which are parallel to each other, a front baffle plate and a rear baffle plate, wherein two ends of the slide bars I are respectively fixed on the front inner wall and the rear inner wall on the right side of the device body, and the front baffle plate and the rear baffle plate are parallel to each other and are both arranged on the slide bars I; the front end and the rear end of the first slide bar are respectively provided with a slide bar fixing seat, the front inner wall and the rear inner wall on the right side inside the device body are respectively provided with a slide bar sliding rail, and the two slide bar fixing seats are respectively arranged on the two slide bar sliding rails and slide freely; the laser ranging receiving end is embedded in the rear end face of the front baffle, the laser ranging transmitting end is embedded in the front end face of the rear baffle, and the laser ranging receiving end and the laser ranging transmitting end are connected to the control display terminal.
Further, the left side upper end face and the right side upper end face of the device body are respectively provided with a left side sealing cover and a right side transparent sealing cover, and a shaping test hole is formed in the left side sealing cover above the shaping fixing base of the lithium battery shaping device.
Further, two slide bar mounting holes are formed in the front baffle plate and the rear baffle plate, a plurality of universal balls are embedded into the inner wall of each slide bar mounting hole, and two slide bars are respectively arranged in the two slide bar mounting holes of the front baffle plate and the rear baffle plate.
Further, two ends of the first connecting rod are respectively hinged to the right end of the second limiting clamping plate and the left end of the rear baffle, and two ends of the second connecting rod are respectively hinged to the right end of the first limiting clamping plate and the left end of the front baffle; the X-shaped cross connection part of the first connecting rod and the second connecting rod is vertically provided with a sliding vertical rod, and the lower end of the sliding vertical rod is arranged in a chute arranged at the inner bottom of the device body; the sliding chute is perpendicular to the clamping telescopic rod and the sliding rod I, grooves are formed in the two inner side walls of the sliding chute, limiting blocks are arranged on the front side and the rear side of the lower end of the outer wall of the sliding vertical rod, and the two limiting blocks of the sliding vertical rod are respectively clamped in the two grooves; pulleys are arranged on the upper end face, the lower end face, the outer end face and the bottom end face of the sliding upright rod of the limiting block; the first connecting rod and the second connecting rod are respectively arranged on the sliding vertical rod through bearings, and limiting sealing pieces are respectively arranged on the sliding vertical rods below the connecting rods, above the second connecting rods and between the first connecting rod and the second connecting rod.
Further, the lithium battery shaping test device comprises the following steps:
s1, controlling the shrinkage of the clamping telescopic rod through the clamping telescopic hydraulic motor to enable the first limiting clamping plate to be separated from the second limiting clamping plate;
s2, heating the lower die and the upper die respectively by using heating devices arranged in the lower die and the upper die, and simultaneously lifting the shaping movable base by using a telescopic device and keeping away from the left side sealing cover;
s3, placing the lithium electronic battery to be subjected to the shaping test into a lower die of the upper end surface of the shaping fixed base through a shaping test hole formed in the left side sealing cover, clamping an upper die of the shaping movable base onto the lower die by using a telescopic device, and shaping the lithium electronic battery to be subjected to the shaping test by using the heated upper die and the lower die;
s4, after the shaping of the lithium-ion battery is completed, the shaping mobile base is lifted again by the telescopic device and is far away from the left side sealing cover;
s5, controlling the elongation of the clamping telescopic rod through the clamping telescopic hydraulic motor, enabling the first limiting clamping plate and the second limiting clamping plate to be close to each other, finally enabling the front end face of the first limiting clamping plate and the two clamping tool bits arranged at the center of the rear end face of the second limiting clamping plate to be clamped and clamped on two sides of a part to be tested of the lithium electronic battery respectively, and controlling the clamping telescopic rod to stop elongation through the clamping telescopic hydraulic motor when pressure sensor data installed on the clamping tool bits reach a preset critical value;
s6, in the process of clamping the extension rod, the data reading assembly slides in the inner area on the right side of the device body, after the extension of the clamping extension rod is stopped, the data reading assembly is also stabilized, at the moment, the laser ranging transmitting end of the front end face of the rear baffle plate is controlled to transmit a laser signal, the laser ranging receiving end in the rear end face of the front baffle plate receives the laser signal, so that the distance K between the rear baffle plate and the front baffle plate is obtained, finally, the gap distance between the two clamping tool bits of the first limiting clamping plate and the second limiting clamping plate is calculated through conversion of a test calculation formula, namely the thickness H of a part to be tested of the lithium electronic battery to be tested is obtained, and finally, the thickness H is displayed on the control display terminal;
and S7, similarly, measuring the thickness H of a plurality of parts to be tested of the lithium-ion battery to be tested, and judging whether the shaped lithium-ion battery to be tested meets the requirements.
Further, a test calculation formula of the thickness H of the portion to be tested of the lithium-ion battery to be tested is as follows:
H =( K +H 3 / 2 + H 4 / 2)/(L 2 /L 1 ) -（H 1 / 2+H 2 / 2+L 3 *2），
wherein K is the distance between the rear end face of the front baffle and the front end face of the rear baffle; h 1 The thickness of the first limiting clamping plate; h 2 To be limited byThe thickness of the second clamping plate; h 3 Is the thickness of the front baffle; h 4 Is the thickness of the rear baffle; l (L) 1 The distance between the axis of the sliding upright rod and the hinge axis of the first connecting rod and the hinge axis of the second limiting clamping plate, or the distance between the axis of the sliding upright rod and the hinge axis of the second connecting rod and the hinge axis of the first limiting clamping plate; l (L) 2 The distance between the axis of the sliding upright rod and the hinge axis of the first connecting rod and the hinge axis of the rear baffle plate or the distance between the axis of the sliding upright rod and the hinge axis of the second connecting rod and the hinge axis of the front baffle plate; l (L) 3 To take the length of the cutter head.
According to the lithium battery shaping testing device provided by the invention, the shaping of the lithium battery is realized through the lithium battery shaping device arranged on the left side in the device body; the lithium battery clamping assembly arranged on the left side inside the device body is used for realizing the fixed clamping of the lithium battery, and the data reading assembly is connected with the connecting rod I and the connecting rod II which are arranged in an X-shaped manner in a crossing manner, so that the thickness of a part to be tested of the lithium battery is amplified, and the testing precision of the thickness is effectively improved; the extension of the telescopic rod is controlled and clamped through the pressure sensor in the lithium battery clamping component, and the clamping force of the cutter head to the lithium battery to-be-tested part is clamped by the two clamping cutter heads on the first limiting clamping plate and the second limiting clamping plate, so that the influence of the artificial measurement force on the test result is reduced, the accuracy is high, and the stability is strong. The lithium battery shaping testing device is compact in structure, high in automation degree, high in accuracy and high in stability, and the shaping working procedure and the testing working procedure of the lithium battery are effectively combined; the method for amplifying and reading the data has the advantages of higher testing precision, higher efficiency, good universality and convenient use.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, a brief description will be given below of the drawings required for the embodiments or the prior art descriptions, and it is obvious that the drawings in the following description are some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 shows a structural elevation view of a lithium battery plastic testing device according to the present invention.
Fig. 2 shows a structural top view of a lithium battery plastic testing device according to the present invention.
Fig. 3 shows an enlarged view of the structure at B in fig. 2 according to the present invention.
Figure 4 shows a cross-sectional view of the A-A structure of figure 2 in accordance with the present invention.
Fig. 5 shows a schematic diagram of the connection structure of the first connecting rod, the second connecting rod, the sliding chute and the sliding vertical rod according to the invention.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1:
in order to solve the above problems, referring to fig. 1-5, the present invention provides a lithium battery shaping test device, which comprises a square box-shaped device body 1, wherein a lithium battery clamping component 2 and a lithium battery shaping device 3 are arranged on the left side inside the device body 1, and the lithium battery shaping device 3 is installed at the center of the lithium battery clamping component 2.
The lithium battery clamping assembly 2 comprises a first limiting clamping plate 22 and a second limiting clamping plate 23, wherein the first limiting clamping plate 22 and the second limiting clamping plate 23 are symmetrically arranged on the front side and the rear side of the shaping fixed base 31; the rear end face of the first limiting clamping plate 22 and the front end face of the second limiting clamping plate 23 are respectively provided with two mutually parallel clamping telescopic rods 21, and the rear ends of the clamping telescopic rods 21 are respectively arranged on the inner wall of the device body 1. The center of the front end face of the first limiting clamping plate 22 and the center of the rear end face of the second limiting clamping plate 23 are respectively provided with a clamping tool bit 24, pressure sensors are respectively arranged on the clamping tool bits 24, and the clamping telescopic rod 21 is controlled to stretch through a clamping telescopic hydraulic motor.
The lithium battery shaping device 3 comprises a shaping fixed base 31 and a shaping movable base 32, wherein a lower die 33 and an upper die 34 are respectively arranged on the upper end face of the shaping fixed base 31 and the lower end face of the shaping movable base 32, the upper die 34 is arranged right above the lower die 33, a telescopic device 35 is arranged on the upper end face of the shaping movable base 32, and heating devices are arranged in the lower die 33 and the upper die 34.
The left and right upper end surfaces of the device body 1 are respectively provided with a left cover 11 and a right transparent cover 12, and a shaping test hole 14 is arranged on the left cover 11 above a shaping fixing base 31 of the lithium battery shaping device 3.
The right side inside the device body 1 is provided with a data reading assembly 4, the data reading assembly 4 comprises two parallel slide bars 41, a front baffle plate 42 and a rear baffle plate 43, two ends of the slide bars 41 are respectively fixed on the front inner wall and the rear inner wall of the right side of the device body 1, and the front baffle plate 42 and the rear baffle plate 43 are parallel to each other and are both arranged on the two slide bars 41; the front end and the rear end of the first slide bar 41 are respectively provided with a slide bar fixing seat 44, the front inner wall and the rear inner wall on the right side inside the device body 1 are respectively provided with a slide bar sliding rail, and the two slide bar fixing seats 44 are respectively arranged on the two slide bar sliding rails and slide freely; the laser ranging receiving end 45 is embedded in the rear end face of the front baffle 42, the laser ranging transmitting end 46 is embedded in the front end face of the rear baffle 43, and the laser ranging receiving end 45 and the laser ranging transmitting end 46 are connected to the control display terminal. The front baffle plate 42 and the rear baffle plate 43 are respectively provided with two slide bar mounting holes, a plurality of universal balls are embedded in the inner walls of the slide bar mounting holes, and two slide bars 41 are respectively arranged in the two slide bar mounting holes of the front baffle plate 42 and the rear baffle plate 43.
The lithium battery clamping assembly 2 is connected with the data reading assembly 4 through a connecting rod assembly 5, and the connecting rod assembly 5 consists of a first connecting rod 51 and a second connecting rod 52 which are identical and are arranged in a cross X-shaped mode. Two ends of the first connecting rod 51 are respectively hinged to the right end of the second limiting clamping plate 23 and the left end of the rear baffle 43, and two ends of the second connecting rod 52 are respectively hinged to the right end of the first limiting clamping plate 22 and the left end of the front baffle 42.
The X-shaped cross connection part of the first connecting rod 51 and the second connecting rod 52 is vertically provided with a sliding vertical rod 7, and the lower end of the sliding vertical rod 7 is arranged in a chute 6 arranged at the bottom in the device body 1. The sliding chute 6 is perpendicular to the clamping telescopic rod 21 and the first sliding rod 41, grooves 62 are formed in the two inner side walls of the sliding chute 6, limiting blocks 72 are arranged on the front side and the rear side of the lower end of the outer wall of the sliding vertical rod 7, and the two limiting blocks 72 of the sliding vertical rod 7 are respectively clamped in the two grooves 62; the upper end face, the lower end face and the outer end face of the limiting block 72 and the bottom end face of the sliding upright rod 7 are respectively provided with a pulley 73; the first connecting rod 51 and the second connecting rod 52 are arranged on the sliding upright rod 7 through bearings, and limiting sealing pieces 71 are arranged on the sliding upright rod 7 below the first connecting rod 51, above the second connecting rod 52 and between the first connecting rod 51 and the second connecting rod 52.
The invention relates to a lithium battery shaping testing device, which comprises the following steps:
s1, controlling the clamping telescopic rod 21 to shrink through the clamping telescopic hydraulic motor, so that the first limiting clamping plate 22 is separated from the second limiting clamping plate 23;
s2, heating the lower die 33 and the upper die 34 by using heating devices arranged in the lower die 33 and the upper die 34 respectively, and simultaneously lifting the shaping moving base 32 by using a telescopic device 35 and keeping away from the left side cover 11;
s3, placing the lithium-ion battery to be subjected to shaping test into a lower die 33 on the upper end surface of the shaping fixed base 31 through a shaping test hole 14 formed in the left side cover 11, clamping an upper die 34 of the shaping movable base 32 onto the lower die 33 by using a telescopic device 35, and shaping the lithium-ion battery to be subjected to shaping test by using the heated upper die 34 and the lower die 33;
s4, after the shaping of the lithium-ion battery is completed, the shaping mobile base 32 is lifted up again by the telescopic device 35 and is far away from the left side sealing cover 11;
s5, controlling the elongation of the clamping telescopic rod 21 through the clamping telescopic hydraulic motor, enabling the first limiting clamping plate 22 and the second limiting clamping plate 23 to be close to each other, finally enabling the front end face of the first limiting clamping plate 22 and the two clamping tool bits 23 arranged at the center of the rear end face of the second limiting clamping plate 23 to be clamped and clamped on two sides of a part to be tested of the lithium electronic battery respectively, and controlling the clamping telescopic hydraulic motor to clamp the telescopic rod 21 to stop elongation when pressure sensor data installed on the clamping tool bits 23 reach a preset critical value;
s6, in the process of stretching the clamping telescopic rod 21, the data reading assembly 4 slides in the inner area on the right side of the device body 1, after the clamping telescopic rod 21 is stretched and stopped, the data reading assembly 4 is also stabilized, at the moment, the laser ranging transmitting end 46 of the front end face of the rear baffle plate 43 is controlled to transmit laser signals, the laser ranging receiving end 45 in the rear end face of the front baffle plate 42 receives the laser signals, so that the distance K between the rear baffle plate 43 and the front baffle plate 42 is obtained, and finally, the gap distance between the first limiting clamping plate 22 and the two clamping tool bits 23 of the second limiting clamping plate 23 is calculated through conversion of a test calculation formula, namely the thickness H of a part to be tested of the lithium electronic battery to be tested is obtained, and finally, the thickness H is displayed on a control display terminal;
and S7, similarly, measuring the thickness H of a plurality of parts to be tested of the lithium-ion battery to be tested, and judging whether the shaped lithium-ion battery to be tested meets the requirements.
The test calculation formula of the thickness H of the part to be tested of the lithium-ion battery to be tested is as follows:
H =( K +H 3 / 2 + H 4 / 2)/(L 2 /L 1 ) -（H 1 / 2+H 2 / 2+L 3 *2），
where K is a distance between the rear end surface of the front barrier 42 and the front end surface of the rear barrier 43; h 1 The thickness of limit clamp plate one 22; h 2 The thickness of the second limiting clamping plate 23; h 3 Is the thickness of the front baffle 42; h 4 Is the thickness of the tailgate 43; l (L) 1 The distance between the axis of the sliding upright rod 7 and the hinge axis of the connecting rod I51 and the hinge axis of the limiting clamping plate II 23, or the distance between the axis of the sliding upright rod 7 and the hinge axis of the connecting rod II 52 and the hinge axis of the limiting clamping plate I22; l (L) 2 The distance between the axis of the sliding upright 7 and the hinge axis of the first connecting rod 51 and the rear baffle 43, or the distance between the axis of the sliding upright 7 and the hinge axis of the second connecting rod 52 and the front baffle 42; l (L) 3 To take the length of the cutter head 24.
The lithium battery shaping test device comprises the following parameters:
H 1 ：8mm；H 2 ：10mm；H 3 ：14mm；H 4 ：16mm；L 1 ：5mm，L 2 :50mm, therefore L 2 /L 1 10, i.e. a magnification of 10; l (L) 3 ：8mm。
The lithium battery shaping test device is used for measuring the thickness of different parts of a plurality of lithium electronic batteries, the read measurement data K and the thickness H data of the part to be tested of the lithium electronic batteries to be tested obtained through a test calculation formula are as follows (part):
| battery serial number | Battery part to be tested | K（mm） | H（mm） |
| M1 | Ⅰ | 350 | 11.5 |
| M1 | Ⅱ | 364 | 12.9 |
| M1 | Ⅲ | 426 | 19.1 |
| M1 | Ⅳ | 912 | 67.7 |
| M2 | Ⅰ | 346 | 11.1 |
| M2 | Ⅱ | 367 | 13.2 |
| M2 | Ⅲ | 430 | 19.5 |
| M2 | Ⅳ | 915 | 68.0 |
| M3 | Ⅰ | 353 | 11.8 |
| M3 | Ⅱ | 360 | 12.5 |
| M3 | Ⅲ | 431 | 19.6 |
| M3 | Ⅳ | 911 | 67.6 |
Example 2:
the invention provides a lithium battery shaping testing device, which has the structure basically same as that of the embodiment 1, and is different in that: the lithium battery shaping test device of the invention, wherein the thickness of the first limiting clamping plate 22, the second limiting clamping plate 23, the front baffle 42 and the rear baffle 43 are the same, and each parameter is as follows:
H 1 ：20mm，H 2 ：20mm，H 3 ：20mm，H 4 ：20mm，L 1 ：10mm，L 2 :50mm, therefore L 2 /L 1 5, i.e. a magnification of 5; l (L) 3 ：8mm。
The lithium battery shaping test device is used for measuring the thickness of different parts of a plurality of lithium electronic batteries, the read measurement data K and the thickness H data of the part to be tested of the lithium electronic batteries to be tested obtained through a test calculation formula are as follows (part):
| battery serial number | Battery part to be tested | K（mm） | H（mm） |
| M4 | Ⅰ | 218 | 11.6 |
| M4 | Ⅱ | 225 | 13.0 |
| M4 | Ⅲ | 255 | 19.0 |
| M4 | Ⅳ | 498 | 67.6 |
| M5 | Ⅰ | 220 | 12.0 |
| M5 | Ⅱ | 224 | 12.8 |
| M5 | Ⅲ | 257 | 19.4 |
| M5 | Ⅳ | 501 | 68.2 |
| M6 | Ⅰ | 217 | 11.4 |
| M6 | Ⅱ | 227 | 13.4 |
| M6 | Ⅲ | 255 | 19.0 |
| M6 | Ⅳ | 497 | 67.4 |
According to the lithium battery shaping testing device, after the lithium battery is shaped, and when thickness measurement is carried out on different parts of the lithium battery, the thickness H of the part to be tested is calculated through a calculation program installed in the control display terminal and a calculation formula, and finally the thickness H is displayed on the control display terminal.
The control display terminal can effectively store and display a plurality of acquired and calculated data, the reasonable range of H is preset in the control display terminal, once the thickness H of a certain part of the lithium battery after the shaping is tested exceeds the reasonable range of the H, the alarm lamp pre-installed on the lithium battery shaping test device provided by the invention can be used for distinguishing that the shaped lithium battery does not meet the specified requirement, and the working efficiency of the lithium battery shaping test can be effectively improved.
According to the lithium battery shaping testing device provided by the invention, the shaping of the lithium battery is realized through the lithium battery shaping device 3 arranged at the left side in the device body 1; the lithium battery clamping assembly 2 arranged on the left side inside the device body 1 is used for realizing the fixed clamping of the lithium battery, and the first connecting rod 51 and the second connecting rod 52 which are arranged in an X-shaped manner in a crossing way are connected with the data reading assembly 4, so that the thickness of a part to be tested of the lithium battery is amplified, and the thickness testing precision is effectively improved; the extension of the telescopic rod 21 is controlled and clamped through the pressure sensor in the lithium battery clamping assembly 2, and the clamping force of the cutter head 24 on the first limiting clamping plate 22 and the second limiting clamping plate 23 to the position to be tested of the lithium battery is reduced, the influence of manual measurement on the test result is reduced, the accuracy is high, and the stability is strong.
The lithium battery shaping testing device is compact in structure, high in automation degree, high in accuracy and high in stability, and the shaping working procedure and the testing working procedure of the lithium battery are effectively combined; the method for amplifying and reading the data has the advantages of higher testing precision, higher efficiency, good universality and convenient use.
It should be noted that the terms "upward", "downward", "leftward", "rightward", "vertical", "inward" and the like are used in the present invention for illustrative purposes only. The present invention is not limited to the above embodiments, but is capable of modification and variation in all aspects, including those of ordinary skill in the art, without departing from the spirit and scope of the present invention.
Claims (6)
1. The lithium battery shaping testing device is characterized by comprising a square box-shaped device body (1), wherein a lithium battery clamping component (2) and a lithium battery shaping device (3) are arranged on the left side inside the device body (1), a data reading component (4) is arranged on the right side inside the device body (1), and the lithium battery shaping device (3) is arranged at the center of the lithium battery clamping component (2); the lithium battery clamping assembly (2) is connected with the data reading assembly (4) through a connecting rod assembly (5), and the connecting rod assembly (5) consists of a connecting rod I (51) and a connecting rod II (52) which are identical and are arranged in a cross X shape;
the lithium battery shaping device (3) comprises a shaping fixed base (31) and a shaping movable base (32), wherein a lower die (33) and an upper die (34) are respectively arranged on the upper end face of the shaping fixed base (31) and the lower end face of the shaping movable base (32), the upper die (34) is arranged right above the lower die (33), a telescopic device (35) is arranged on the upper end face of the shaping movable base (32), and heating devices are arranged in the lower die (33) and the upper die (34);
the lithium battery clamping assembly (2) comprises a first limiting clamping plate (22) and a second limiting clamping plate (23), and the first limiting clamping plate (22) and the second limiting clamping plate (23) are symmetrically arranged on the front side and the rear side of the shaping fixing base (31); the rear end face of the first limiting clamping plate (22) and the front end face of the second limiting clamping plate (23) are respectively provided with two mutually parallel clamping telescopic rods (21), and the rear ends of the clamping telescopic rods (21) are respectively arranged on the inner wall of the device body (1);
the centers of the front end face of the first limiting clamping plate (22) and the rear end face of the second limiting clamping plate (23) are respectively provided with a clamping tool bit (24), pressure sensors are respectively arranged on the clamping tool bits (24), and the clamping telescopic rod (21) is controlled to stretch through a clamping telescopic hydraulic motor;
the data reading assembly (4) comprises two slide bars (41) which are parallel to each other, a front baffle (42) and a rear baffle (43), wherein two ends of the slide bars (41) are respectively fixed on the front inner wall and the rear inner wall on the right side of the device body (1), and the front baffle (42) and the rear baffle (43) are parallel to each other and are both arranged on the two slide bars (41); the front end and the rear end of the two first slide bars (41) are respectively provided with a slide bar fixing seat (44), the front inner wall and the rear inner wall on the right side inside the device body (1) are respectively provided with a slide bar sliding rail, and the two slide bar fixing seats (44) are respectively arranged on the two slide bar sliding rails and slide freely; the laser ranging receiving terminal (45) is embedded in the rear end face of the front baffle (42), the laser ranging transmitting terminal (46) is embedded in the front end face of the rear baffle (43), and the laser ranging receiving terminal (45) and the laser ranging transmitting terminal (46) are connected to the control display terminal.
2. The lithium battery shaping test device according to claim 1, wherein the left side upper end face and the right side upper end face of the device body (1) are respectively provided with a left side sealing cover (11) and a right side transparent sealing cover (12), and shaping test holes (14) are formed in the left side sealing cover (11) above the shaping fixing base (31) of the lithium battery shaping device (3).
3. The lithium battery shaping test device according to claim 2, wherein two slide bar mounting holes are formed in the front baffle (42) and the rear baffle (43), a plurality of universal balls are embedded into the inner wall of each slide bar mounting hole, and two slide bars (41) are respectively arranged in the two slide bar mounting holes of the front baffle (42) and the rear baffle (43).
4. The lithium battery shaping test device according to claim 3, wherein two ends of the first connecting rod (51) are respectively hinged to the right end of the second limiting clamping plate (23) and the left end of the rear baffle (43), and two ends of the second connecting rod (52) are respectively hinged to the right end of the first limiting clamping plate (22) and the left end of the front baffle (42); a sliding vertical rod (7) is vertically arranged at the X-shaped cross joint of the first connecting rod (51) and the second connecting rod (52), and the lower end of the sliding vertical rod (7) is arranged in a chute (6) arranged at the inner bottom of the device body (1); the sliding chute (6) is perpendicular to the clamping telescopic rod (21) and the first sliding rod (41), grooves (62) are formed in the two inner side walls of the sliding chute (6), limiting blocks (72) are arranged on the front side and the rear side of the lower end of the outer wall of the sliding vertical rod (7), and the two limiting blocks (72) of the sliding vertical rod (7) are respectively clamped in the two grooves (62); pulleys (73) are arranged on the upper end face, the lower end face and the outer end face of the limiting block (72) and the bottom end face of the sliding upright rod (7); the first connecting rod (51) and the second connecting rod (52) are both installed on the sliding vertical rod (7) through bearings, and limiting sealing pieces (71) are arranged on the sliding vertical rod (7) below the first connecting rod (51), above the second connecting rod (52) and between the first connecting rod (51) and the second connecting rod (52).
5. The lithium battery shaping test device according to claim 4, wherein the lithium battery shaping test device comprises the following steps:
s1, controlling the clamping telescopic rod (21) to shrink through the clamping telescopic hydraulic motor, so that the first limiting clamping plate (22) is separated from the second limiting clamping plate (23);
s2, heating the lower die (33) and the upper die (34) by using heating devices arranged in the lower die (33) and the upper die (34), and simultaneously lifting the shaping movable base (32) by using a telescopic device (35) and keeping away from the left side cover (11);
s3, placing the lithium electronic battery to be subjected to the shaping test into a lower die (33) on the upper end surface of the shaping fixed base (31) through a shaping test hole (14) formed in the left side sealing cover (11), clamping an upper die (34) of the shaping movable base (32) onto the lower die (33) by using a telescopic device (35), and shaping the lithium electronic battery to be subjected to the shaping test by using the heated upper die (34) and the lower die (33);
s4, after the shaping of the lithium-ion battery is completed, the shaping mobile base (32) is lifted up again by using the telescopic device (35) and is far away from the left side sealing cover (11);
s5, controlling the elongation of the clamping telescopic rod (21) through the clamping telescopic hydraulic motor, enabling the first limiting clamping plate (22) and the second limiting clamping plate (23) to be close to each other, finally enabling the front end face of the first limiting clamping plate (22) and the two clamping tool bits (24) arranged at the center of the rear end face of the second limiting clamping plate (23) to be clamped and clamped on two sides of a part to be tested of the lithium electronic battery respectively, and controlling the clamping telescopic hydraulic motor to clamp the telescopic rod (21) to stop elongation when pressure sensor data installed on the clamping tool bits (24) reach a preset critical value;
s6, in the extending process of the clamping telescopic rod (21), the data reading assembly (4) slides in the inner area on the right side of the device body (1), after the extending of the clamping telescopic rod (21) is stopped, the data reading assembly (4) is also stabilized, at the moment, the laser ranging transmitting end (46) of the front end face of the rear baffle plate (43) is controlled to transmit a laser signal, the laser ranging receiving end (45) in the rear end face of the front baffle plate (42) receives the laser signal, so that the distance K between the rear baffle plate (43) and the front baffle plate (42) is obtained, and finally, the gap distance between the first limiting clamping plate (22) and the second limiting clamping plate (23) is calculated through conversion of a test calculation formula, namely the thickness H of a part to be tested of the lithium electronic battery to be tested is finally displayed on the control display terminal;
and S7, similarly, measuring the thickness H of a plurality of parts to be tested of the lithium-ion battery to be tested, and judging whether the shaped lithium-ion battery to be tested meets the requirements.
6. The lithium battery plastic testing device according to claim 5, wherein the test calculation formula of the thickness H of the portion to be tested of the lithium battery to be tested is:
H = ( K + H 3 / 2 + H 4 / 2) / ( L 2 / L 1 ) -（H 1 / 2+ H 2 / 2+L 3 *2），
wherein K is the distance between the rear end face of the front baffle (42) and the front end face of the rear baffle (43); h 1 The thickness of the first limiting clamping plate (22); h 2 The thickness of the second limiting clamping plate (23); h 3 Is the thickness of the front baffle (42); h 4 Is the thickness of the rear baffle (43); l (L) 1 Is the distance between the axle center of the sliding upright rod (7) and the hinge axle center of the connecting rod I (51) and the limiting clamping plate II (23), or the distance between the axle center of the sliding upright rod (7) and the connecting rod II52 Distance from the hinge axis of the first limiting clamping plate (22); l (L) 2 The distance between the axis of the sliding upright rod (7) and the hinge axis of the first connecting rod (51) and the rear baffle (43) or the distance between the axis of the sliding upright rod (7) and the hinge axis of the second connecting rod (52) and the front baffle (42); l (L) 3 To take the length of the cutter head (24).
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| CN114353677A (en) | 2022-04-15 |
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