CN114371406A - Movement mechanism for square lithium ion self-adaptive high-temperature negative pressure formation testing equipment - Google Patents
Movement mechanism for square lithium ion self-adaptive high-temperature negative pressure formation testing equipment Download PDFInfo
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- 230000007246 mechanism Effects 0.000 title claims abstract description 149
- 238000012360 testing method Methods 0.000 title claims abstract description 75
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 39
- 230000033001 locomotion Effects 0.000 title claims abstract description 39
- 230000015572 biosynthetic process Effects 0.000 title claims abstract description 35
- 230000002457 bidirectional effect Effects 0.000 claims description 34
- 239000003638 chemical reducing agent Substances 0.000 claims description 28
- 230000003044 adaptive effect Effects 0.000 claims description 9
- 230000008859 change Effects 0.000 claims description 7
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 6
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 229910052744 lithium Inorganic materials 0.000 claims description 6
- 230000000712 assembly Effects 0.000 claims description 5
- 238000000429 assembly Methods 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 claims description 5
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 12
- 238000007599 discharging Methods 0.000 description 9
- 230000001360 synchronised effect Effects 0.000 description 9
- 238000003466 welding Methods 0.000 description 5
- 238000001035 drying Methods 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000003750 conditioning effect Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
- 230000009977 dual effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/4285—Testing apparatus
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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 invention discloses a movement mechanism for square lithium ion self-adaptive high-temperature negative pressure formation testing equipment, which comprises: the supporting unit comprises a mechanism bottom frame, a guide assembly and a mechanism top frame, and the mechanism top frame is horizontally arranged above the mechanism bottom frame through the guide assembly; the lifting unit comprises a mechanism middle frame and a lifting driving mechanism, and the mechanism middle frame is slidably arranged on the guide assembly; the lifting driving mechanism is arranged between the mechanism middle frame and the mechanism top frame; the adjusting and testing unit comprises an interval adjusting mechanism and at least one set of testing assembly, and the interval adjusting mechanism is arranged on the inner bottom surface of the mechanism top frame; the testing assembly comprises a positive electrode needle plate assembly, a negative electrode cup assembly and a negative electrode needle plate assembly which are arranged at the bottom of the mechanism top frame in a sliding mode, and the positive electrode needle plate assembly, the negative electrode cup assembly and the negative electrode needle plate assembly are connected with the adjusting end of the spacing adjusting mechanism respectively. The invention has the beneficial effects that: can be compatible with various battery sizes, realizes automatic model changing and improves the automatic production efficiency.
Description
Technical Field
The invention relates to a movement mechanism for square lithium ion self-adaptive high-temperature negative pressure formation testing equipment, and belongs to the field of manufacturing of lithium battery testing equipment.
Background
After the square power lithium ion battery is produced, in order to charge and activate the battery cell after liquid injection packaging, formation test equipment is required. The traditional formation test equipment can not be compatible with batteries with various specifications generally, or can be compatible with a small number of batteries with different specifications, but is manually adjusted; the operation process is troublesome and need dismouting part during artifical manual regulation, and uniformity and stability after the equipment is adjusted receive artificial factor's influence, and operation is inconvenient and consuming time and consuming power when position control on the whole, and the in-process artificial factor of remodeling can produce very big influence to the performance of equipment. With the rapid development of the lithium battery industry, the scale and the volume of the lithium battery show a multiplication-type growth trend, and the specification and the types of the battery are inevitably increased. The traditional formation test equipment still stays in a manual mode of changing types, and the requirements of high efficiency and quick changing types in the process of battery charging and discharging test can not be met gradually.
Disclosure of Invention
To solve the above problems. The invention designs a movement mechanism for square lithium ion self-adaptive high-temperature negative pressure formation testing equipment, which can be automatically compatible with various battery sizes, is accurate and quick in adjustment and is simple to operate.
The invention discloses a movement mechanism for square lithium ion self-adaptive high-temperature negative pressure formation testing equipment, which is characterized by comprising the following components:
the supporting unit comprises a mechanism bottom frame, a guide assembly and a mechanism top frame, the mechanism top frame is horizontally arranged above the mechanism bottom frame through a plurality of sets of guide assemblies, and a test space is reserved between the mechanism top frame and the mechanism bottom frame;
the lifting unit is arranged in the test space and comprises a mechanism middle frame and a lifting driving mechanism, and the mechanism middle frame is slidably arranged on the guide assembly and used for supporting and positioning the battery tray; the lifting driving mechanism is arranged between the mechanism middle frame and the mechanism top frame and is used for driving the mechanism middle frame to vertically lift;
the adjusting and testing unit can change the positions of the positive and negative poles and the negative pressure port of the batteries with different specifications, can automatically adjust the position of the corresponding needle bed, and is compatible with the batteries with various specifications; the adjusting and testing unit is arranged at the bottom of the mechanism top frame and comprises an interval adjusting mechanism and at least one set of testing assembly, and the interval adjusting mechanism is arranged on the inner bottom surface of the mechanism top frame; the testing assembly comprises a positive electrode needle plate assembly, a negative pressure cup assembly and a negative electrode needle plate assembly, the positive electrode needle plate assembly, the negative pressure cup assembly and the negative electrode needle plate assembly are slidably arranged at the bottom of the mechanism top frame, and the positive electrode needle plate assembly, the negative pressure cup assembly and the negative electrode needle plate assembly are respectively connected with the adjusting end of the spacing adjusting mechanism and used for adjusting the spacing among the positive electrode needle plate assembly, the negative pressure cup assembly and the negative electrode needle plate assembly to adapt to square lithium batteries of different specifications; the positive electrode pin plate assembly and the negative electrode pin plate assembly are respectively arranged on two opposite sides of the negative pressure cup assembly; the bottom of the positive electrode needle plate assembly is provided with a row of mutually independent positive poles, the bottom of the negative electrode needle plate assembly is provided with a row of mutually independent negative poles, the bottom of the negative electrode cup assembly is provided with a row of mutually independent negative pressure suction nozzles, and the positive poles of the positive electrode needle plate assembly, the negative pressure suction nozzles of the negative pressure cup assembly and the negative poles of the negative electrode needle plate assembly are respectively connected through connecting pieces.
Further, the guide assembly comprises a guide shaft and a linear bearing, and the linear bearing is fixedly arranged on the mechanism middle frame; the guide shaft is slidably arranged in the linear bearing in a penetrating manner, and two ends of the guide shaft are respectively fixedly connected with the mechanism bottom frame and the mechanism top frame.
Furthermore, the lifting driving mechanism comprises two sets of servo electric cylinders and a distance measuring sensor, the servo motor is vertically arranged below the mechanism top frame, the lifting end of the servo motor is connected with the mechanism middle frame, and the two sets of servo electric cylinders synchronously move; each set of servo electric cylinder corresponds to one set of ranging sensor and is used for monitoring the moving distance of the servo electric cylinder in real time.
Further, the linear guide part comprises linear guide rails, linear guide rail sliding blocks and linear modules, the linear guide rails are horizontally laid on the inner bottom surface of the mechanism top frame, a plurality of linear guide rail sliding blocks are slidably mounted on each linear guide rail, every three linear guide rail sliding blocks form a group, and each group of linear guide rail sliding blocks is correspondingly provided with one set of test assembly; the linear module is arranged on the inner bottom surface of the mechanism top frame and is arranged along the axial direction of the linear guide rail, and an adjusting driving part of the linear module is connected with the testing component and used for driving the distance between the testing components.
Further, the linear module comprises a support frame, a driving part, a one-way screw nut pair and a two-way screw nut pair, and the support frame is arranged at the bottom of the top frame of the rack; the driving part is arranged at one end part of the supporting frame, and the power output end of the driving part is connected with the power input end of the screw-nut pair; the unidirectional screw nut pair and the bidirectional screw nut pair are rotatably arranged on the support frame, and are arranged along the axial direction of the linear guide rail; the power input ends of the unidirectional screw-nut pair and the bidirectional screw-nut pair are connected with the power output end of the driving part, and the first moving assembly on the unidirectional screw-nut pair is connected with the negative pressure cup assembly through the corresponding linear guide rail sliding block; and the second moving assembly on the bidirectional screw nut pair is respectively connected with the anode needle plate assembly and the cathode needle plate assembly through corresponding linear guide rail sliders.
Further, the support frame comprises a mounting bottom plate, an end mounting plate, a fixed mounting plate, a screw rod supporting plate, a screw rod fixing plate and a dustproof cover plate, wherein the mounting bottom plate is mounted on the inner bottom surface of the top frame of the rack; the fixed mounting plate and the end mounting plate are mounted at the bottom of the mounting bottom plate; the dustproof cover plate is arranged between the end mounting plate and the fixed mounting plate in parallel, and a space for accommodating the unidirectional screw-nut pair and the bidirectional screw-nut pair is reserved between the dustproof cover plate and the mounting bottom plate; the end mounting plate and the fixed mounting plate are respectively provided with the screw rod supporting plate and the screw rod fixing plate.
Further, the drive division is two sets altogether, one set with one-way screw-nut pair is connected, another set with two-way screw-nut pair is connected, the drive division includes servo motor, speed reducer mounting panel and shaft coupling, servo motor set up in the one end of speed reducer, and servo motor's power take off end with the power input end of speed reducer is connected, the speed reducer passes through the speed reducer mounting panel set firmly in mounting plate's bottom, two sets the speed reducer respectively through the shaft coupling with one-way screw-nut pair's power input end the two-way screw-nut pair's power input end is connected.
Furthermore, the one-way screw rod nut pair is arranged in a space between the mounting bottom plate and the dustproof cover plate and comprises a one-way screw rod, a first nut and a first nut connecting block, the one-way screw rod is rotatably arranged between the screw rod supporting plate and the screw rod fixing plate, and one end of the one-way screw rod is connected with the power output end of one set of speed reducer through a coupler; the first nut is sleeved on the one-way screw rod, and the internal thread of the first nut is meshed with the external thread of the one-way screw rod; the first nut connecting block is fixedly arranged on the first nut and is connected with the negative pressure cup assembly through a corresponding linear guide rail sliding block.
Furthermore, the bidirectional screw rod nut pair is arranged in a space between the mounting bottom plate and the dustproof cover plate and comprises a unidirectional screw rod, a second nut and a second nut connecting block, the bidirectional screw rod is rotatably arranged between the screw rod supporting plate and the screw rod fixing plate, and one end of the bidirectional screw rod is connected with the power output end of one set of speed reducer through a coupler; the bidirectional screw rod is provided with two sections of external threads with opposite rotation directions along the axial direction of the bidirectional screw rod; two thread sections of the bidirectional screw rod are respectively screwed with one second nut; the second nut connecting block is fixedly arranged on the second nut and is connected with the anode needle plate assembly and the cathode needle plate assembly through corresponding linear guide rail sliders.
Furthermore, the unidirectional screw rod and the bidirectional screw rod are both bidirectional ball screws.
The invention relates to a test system constructed by a motion mechanism of square lithium ion adaptive high-temperature negative pressure formation test equipment, which is characterized in that: the system comprises a power supply cabinet and a mechanism cabinet which are independently arranged, wherein the power supply cabinet is arranged in a formation workshop, and the mechanism cabinet is arranged in a constant-temperature drying room; the mechanism cabinet comprises a frame for supporting, the movement mechanism for testing the charge and discharge of the square power lithium ion battery, a battery tray for placing the square power lithium ion battery to be tested and a fire fighting system for putting out the battery on fire, wherein the movement mechanism and the fire fighting system are arranged in the frame, and the battery tray is arranged in the movement mechanism; the power supply cabinet generally comprises a negative pressure system for providing negative pressure for a negative pressure cup needle bed, a driving box for supplying power to the square power lithium ion battery in the charging and discharging processes, a PLC electrical system for controlling the whole charging and discharging action process and a controller, wherein an air suction port of the negative pressure system is communicated with an air suction port pipeline of the negative pressure cup assembly; the control end of the driving box is electrically connected with the connecting end of the anode needle plate assembly and the connecting end of the cathode needle plate assembly; the voltage output end of the PLC electrical system is respectively and electrically connected with the voltage connecting end of the motion mechanism and the voltage connecting end of the controller; and the control end of the controller is electrically connected with the control end of the motion mechanism.
Further, the frame is formed by welding high-strength square pipes.
Further, the temperature in the constant temperature drying room is 45 +/-3 ℃.
The invention relates to a movement mechanism for square lithium ion self-adaptive high-temperature negative pressure formation testing equipment, which comprises the following components in part by weight: the charged and discharged positive and negative pole needle plate assembly and the negative pressure cup assembly are not locked on a frame through screws like a traditional mode, but are assembled on a linear guide rail sliding block, so that the positive and negative pole needle plate assembly and the negative pressure cup assembly can freely slide left and right. Considering that when the specification of the square power lithium ion battery is changed, the positions of the polar columns of the square power lithium ion battery are symmetrical about the central plane of the battery, and then the square power lithium ion battery is adjusted by adopting a mode that a servo motor drives a bidirectional screw rod; because only one negative pressure pumping air inlet is arranged on the square power lithium ion battery, the position change of the pole on the battery is single size change, and then the servo motor is adopted to drive the one-way ball screw to adjust the one-way ball screw. And to the charge-discharge test of equidistant multiseriate battery in the tray, the interval when considering every row of battery to arrange is the same, interval between the anodal utmost point post of adjacent row battery promptly, interval between the negative pole utmost point post, distance between the negative pressure air inlet all equals, can regard as a whole during the regulation, factor in the aspects such as the limited utilization in space and economical and practical is considered again, at a plurality of anodal utmost point posts of anodal faller subassembly, between a plurality of negative pole utmost point posts of negative pole faller subassembly, form rigid connection through corresponding connecting piece separately between a plurality of negative pressure suction nozzles of negative pressure cup subassembly, but form the whole of synchronous motion. When the position of the pole probe and the negative pressure suction nozzle is adjusted during actual battery model changing, only the position of a single row needs to be adjusted, and the rest positions are adjusted in a driven mode due to rigid connection. Therefore, the adjusting function of the batteries in multiple rows is realized by the single-row adjusting mechanism, so that the mounting space and the assembly difficulty are greatly saved, and the manufacturing cost of equipment is also saved. On the other hand, the battery tray of the traditional high-temperature negative pressure formation testing equipment is lifted, a cylinder is used as a power source, and a limiting rod is used as an in-place reference; the test position of battery tray is single fixed, wants the adjusting position, only changes the gag lever post of different length, and the operation is inconvenient and inefficiency still accompanies a large amount of gag lever posts spare parts and stores and examines the problem regularly. Aiming at the problems, the self-adaptive high-temperature negative-pressure formation testing equipment adopts double electric cylinders as power sources, and the position in the stroke can be adjusted randomly. In order to ensure the synchronous consistency of the servo electric cylinders on the two sides during working, a Mitsubishi synchronous controller is selected for control, and double electric cylinder synchronous control is realized. In addition, in consideration of the safety problem during battery testing, the distance measuring sensor is independently configured in the equipment besides the limit position sensor of the cylinder, so that the moving distance of the servo cylinder is monitored in real time, and the dual monitoring effect is achieved. The design of the rest part adopts the mode of the traditional high-temperature negative-pressure formation test equipment.
The invention has the beneficial effects that: the function of automatically adjusting the spacing between the positive pole and the negative pole and the spacing between the negative poles is realized through a transmission mode of a servo motor and a ball screw; the automatic adjustment of the space between the square power lithium ion battery and the test needle bed is realized by the synchronous control operation of the left servo electric cylinder and the right servo electric cylinder; the time for changing the model of the product is well shortened, the occurrence of shutdown caused by the position error of the probe due to manual model changing is reduced, and the production efficiency is improved; the battery can be compatible with various battery sizes, automatic model changing is realized, the automatic production efficiency is improved, automatic charging and discharging of the battery are realized, and the battery is convenient and efficient.
Drawings
FIG. 1 is an isometric view of the motion mechanism of the present invention;
FIG. 2 is a front view of the motion mechanism of the present invention;
FIG. 3 is a right side view of the motion mechanism of the present invention;
FIG. 4 is an isometric view of the conditioning module of the present invention;
FIG. 5 is a front view of the conditioning module of the present invention;
FIG. 6 is a right side view of the conditioning module of the present invention;
FIG. 7 is an isometric view of the linear module of the present invention;
FIG. 8 is a front view of the linear module of the present invention;
FIG. 9 is a right side view of the linear die set of the present invention;
FIG. 10 is a top side view of the linear module of the present invention.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating embodiments of the invention, are given by way of illustration and explanation only, not limitation.
It should be noted that the embodiments and features of the embodiments may be combined with each other without conflict.
The invention will be described in detail below with reference to exemplary embodiments and with reference to the accompanying drawings.
As shown in the figure, the movement mechanism for the square lithium ion self-adaptive high-temperature negative-pressure formation testing equipment comprises:
the supporting unit 100 comprises a mechanism bottom frame 6, guide assemblies 2 and a mechanism top frame 7, wherein the mechanism top frame 7 is horizontally arranged above the mechanism bottom frame 6 through a plurality of sets of guide assemblies 2, and a testing space is reserved between the mechanism top frame 7 and the mechanism bottom frame 6;
the lifting unit 200 is arranged in the test space and comprises a mechanism middle frame and a lifting driving mechanism, wherein the mechanism middle frame is slidably arranged on the guide assembly and used for supporting and positioning the battery tray; the lifting driving mechanism is arranged between the mechanism middle frame and the mechanism top frame and is used for driving the mechanism middle frame to vertically lift;
the adjusting and testing unit 300 can automatically adjust the positions of corresponding needle beds according to the position changes of the positive and negative poles and the negative pressure ports of the batteries with different specifications, and is compatible with the batteries with various specifications; the adjusting test unit 300 is arranged at the bottom of the mechanism top frame 7 and comprises a spacing adjusting mechanism 310 and at least one set of test components 320, wherein the spacing adjusting mechanism 310 is arranged on the inner bottom surface of the mechanism top frame 7; the testing assembly 320 comprises an anode pin plate assembly 8, a negative pressure cup assembly 10 and a negative electrode pin plate assembly 11, the anode pin plate assembly 8, the negative pressure cup assembly 10 and the negative electrode pin plate assembly 11 are slidably arranged at the bottom of the mechanism top frame 7, and the anode pin plate assembly, the negative pressure cup assembly 10 and the negative electrode pin plate assembly are respectively connected with an adjusting end of the spacing adjusting mechanism and used for adjusting the spacing among the anode pin plate assembly, the negative pressure cup assembly 10 and the negative electrode pin plate assembly to adapt to square lithium batteries of different specifications; the positive electrode pin plate assembly 8 and the negative electrode pin plate assembly 11 are respectively arranged at two opposite sides of the negative pressure cup assembly 10; the bottom of the positive electrode needle plate assembly 8 is provided with a row of mutually independent positive poles, the bottom of the negative electrode needle plate assembly 11 is provided with a row of mutually independent negative poles, the bottom of the negative pressure cup assembly 10 is provided with a row of mutually independent negative pressure suction nozzles, and the positive poles of the positive electrode needle plate assembly 8, the negative pressure suction nozzles of the negative pressure cup assembly 10 and the negative poles of the negative electrode needle plate assembly 11 are respectively connected through connecting pieces.
The four guide assemblies 2 are distributed at four corners of the movement mechanism and play a role in guiding and reducing friction in the lifting action process; each set of guide assembly 2 comprises a guide shaft 21 and a linear bearing 22, and the linear bearing 22 is fixedly arranged on the mechanism middle frame 5; the guide shaft 21 is slidably inserted into the linear bearing 22, and both ends of the guide shaft 21 are fixedly connected to the mechanism bottom frame 6 and the mechanism top frame 7, respectively.
The lifting driving mechanism 3 comprises two sets of servo electric cylinders and a distance measuring sensor, the servo motor is vertically arranged below the mechanism top frame, the lifting end of the servo motor is connected with the mechanism middle frame, and the two sets of servo electric cylinders synchronously move; each set of servo electric cylinder corresponds to one set of ranging sensor and is used for monitoring the moving distance of the servo electric cylinder in real time.
The servo electric cylinder comprises a second servo motor with a brake, a second speed reducer and a cylinder body with a screw rod structure, wherein the second servo motor and the second speed reducer are arranged in the cylinder body, and the power output end of the second servo motor is connected with the power input end of the second speed reducer; and the power input end of the screw rod structure is connected with the power output end of the second speed reducer, and the power output end of the screw rod structure extends out of the cylinder body and is connected with the frame middle frame. The maximum thrust of the servo electric cylinder can reach about 1.5 tons, and the adjustment of any position in the stroke is realized, so that the automatic adjustment compatibility of batteries with different heights is realized.
The mechanism bottom frame 6 is formed by welding precise square tubes and is a base of the whole movement mechanism. Mechanism top frame 7 is formed by accurate square tube welding through the preparation of digit control machine tool processing hole site, realizes mechanical connection through guide assembly 2 and mechanism underframe 6, with guide assembly the mechanism underframe has constituted motion structure's whole skeleton jointly, and intensity is reliable, and the structure is simplified.
The linear guide part comprises linear guide rails 27, linear guide rail sliders 9 and linear modules 12, the linear guide rails 27 are horizontally paved on the inner bottom surface of the mechanism top frame 7, a plurality of linear guide rail sliders 9 are slidably installed on each linear guide rail 27, every three linear guide rail sliders 9 form a group, and each group of linear guide rail sliders 9 is correspondingly provided with one set of the test assembly 320; the linear module 12 is installed on the inner bottom surface of the mechanism top frame 7, the linear module 12 is arranged along the axial direction of the linear guide rail 27, and the adjusting driving part of the linear module 27 is connected with the testing component 320 and used for driving the distance between the testing components.
The linear module 12 comprises a support frame 121, a driving part 122, a one-way screw nut pair 123 and a two-way screw nut pair 124, wherein the support frame 121 is mounted at the bottom of the rack top frame 7; the driving part 122 is arranged at one end of the supporting frame 121, and a power output end of the driving part 122 is connected with a power input end of the one-way screw-nut pair and a power input end of the two-way screw-nut pair 124; the one-way screw nut pair 123 and the two-way screw nut pair 124 are rotatably mounted on the support frame 121, and the one-way screw nut pair 123 and the two-way screw nut pair 124 are both arranged along the axial direction of the linear guide rail; the power input ends of the unidirectional screw-nut pair 123 and the bidirectional screw-nut pair 124 are connected with the power output end of the driving part 122, and a first moving assembly on the unidirectional screw-nut pair 123 is connected with the negative pressure cup assembly through a corresponding linear guide rail slider; and the second moving assembly on the bidirectional screw nut pair 124 is respectively connected with the anode needle plate assembly and the cathode needle plate assembly through corresponding linear guide rail sliders.
The supporting frame 121 comprises a mounting bottom plate 15, an end mounting plate 20, a fixed mounting plate 21, a screw rod supporting plate 17, a screw rod fixing plate 18 and a dustproof cover plate 22, wherein the mounting bottom plate is mounted on the inner bottom surface of the top frame of the rack; the fixed mounting plate 21 and the end mounting plate 20 are mounted at the bottom of the mounting base plate 15; the dustproof cover plate 22 is arranged between the end mounting plate 20 and the fixed mounting plate 21 in parallel, and a space for accommodating a unidirectional screw nut pair and a bidirectional screw nut pair is reserved between the dustproof cover plate 22 and the mounting bottom plate 15; the end mounting plate 20 and the fixed mounting plate 21 are respectively provided with the screw rod supporting plate 17 and the screw rod fixing plate 18.
The one-way screw nut pair 123 is arranged in a space between the mounting base plate and the dustproof cover plate and comprises a one-way screw 23, a first nut 29 and a first nut connecting block 14, the one-way screw 23 is rotatably arranged between the screw supporting plate 17 and the screw fixing plate 18, and one end of the one-way screw 23 is connected with a power output end of one set of speed reducers 16 through a coupler 26; the first nut 29 is sleeved on the one-way screw rod 23, and the internal thread of the first nut 29 is meshed with the external thread of the one-way screw rod 23; the first nut connecting block 14 is fixedly arranged on the first nut 29 and is connected with the negative pressure cup assembly 10 through a corresponding linear guide rail sliding block.
The bidirectional screw-nut pair 124 is arranged in a space between the mounting base plate 15 and the dustproof cover plate 22 and comprises a bidirectional screw 25, a second nut 24 and a second nut connecting block 28, the bidirectional screw is rotatably arranged on the screw supporting plate 17 and the screw fixing plate 18, and one end of the bidirectional screw 25 is connected with a power output end of one set of speed reducers 16 through a coupler 26; the bidirectional screw 25 is provided with two sections of external threads with opposite rotation directions along the axial direction of the bidirectional screw; two thread sections of the bidirectional screw rod 25 are respectively screwed with one second nut 24; the second nut connecting block 28 is fixedly arranged on the second nut 24 and is connected with the anode needle plate assembly 8 and the cathode needle plate assembly 11 through corresponding linear guide rail sliders.
The invention relates to a movement mechanism for square lithium ion self-adaptive high-temperature negative pressure formation testing equipment, which comprises the following components in part by weight: the charged and discharged positive and negative pole needle plate assembly and the negative pressure cup assembly are not locked on a frame through screws like a traditional mode, but are assembled on a linear guide rail sliding block, so that the positive and negative pole needle plate assembly and the negative pressure cup assembly can freely slide left and right. Considering that when the specification of the square power lithium ion battery is changed, the positions of the polar columns of the square power lithium ion battery are symmetrical about the central plane of the battery, and then the square power lithium ion battery is adjusted by adopting a mode that a servo motor drives a bidirectional screw rod; because only one negative pressure pumping air inlet is arranged on the square power lithium ion battery, the position change of the pole on the battery is single size change, and then the servo motor is adopted to drive the one-way ball screw to adjust the one-way ball screw. And to the charge-discharge test of equidistant multiseriate battery in the tray, the interval when considering every row of battery to arrange is the same, interval between the anodal utmost point post of adjacent row battery promptly, interval between the negative pole utmost point post, distance between the negative pressure air inlet all equals, can regard as a whole during the regulation, factor in the aspects such as the limited utilization in space and economical and practical is considered again, at a plurality of anodal utmost point posts of anodal faller subassembly, between a plurality of negative pole utmost point posts of negative pole faller subassembly, form rigid connection through corresponding connecting piece separately between a plurality of negative pressure suction nozzles of negative pressure cup subassembly, but form the whole of synchronous motion. When the position of the pole probe and the negative pressure suction nozzle is adjusted during actual battery model changing, only the position of a single row needs to be adjusted, and the rest positions are adjusted in a driven mode due to rigid connection. Therefore, the adjusting function of the batteries in multiple rows is realized by the single-row adjusting mechanism, so that the mounting space and the assembly difficulty are greatly saved, and the manufacturing cost of equipment is also saved.
On the other hand, the battery tray of the traditional high-temperature negative pressure formation testing equipment is lifted, a cylinder is used as a power source, and a limiting rod is used as an in-place reference; the test position of battery tray is single fixed, wants the adjusting position, only changes the gag lever post of different length, and the operation is inconvenient and inefficiency still accompanies a large amount of gag lever posts spare parts and stores and examines the problem regularly. Aiming at the problems, the self-adaptive high-temperature negative-pressure formation testing equipment adopts double electric cylinders as power sources, and the position in the stroke can be adjusted randomly. In order to ensure the synchronous consistency of the servo electric cylinders on the two sides during working, a Mitsubishi synchronous controller is selected for control, and double electric cylinder synchronous control is realized. In addition, in consideration of the safety problem during battery testing, the distance measuring sensor is independently configured in the equipment besides the limit position sensor of the cylinder, so that the moving distance of the servo cylinder is monitored in real time, and the dual monitoring effect is achieved. The design of the rest part adopts the mode of the traditional high-temperature negative-pressure formation test equipment.
The test system constructed by the motion mechanism for the square lithium ion self-adaptive high-temperature negative-pressure formation test equipment comprises a power supply cabinet and a mechanism cabinet which are independently arranged, wherein the power supply cabinet is installed in a formation workshop, and the mechanism cabinet is installed in a constant-temperature drying room; the mechanism cabinet comprises a support frame, a movement mechanism, a battery tray and a fire extinguishing system, wherein the movement mechanism is used for supporting the square lithium ion self-adaptive high-temperature negative-pressure formation testing equipment and used for square power lithium ion battery charge and discharge testing, the battery tray is used for placing a square power lithium ion battery to be tested, the fire extinguishing system is used for extinguishing fire of the battery, the movement mechanism and the fire extinguishing system are arranged in the support frame, and the battery tray is arranged in the movement mechanism; the power supply cabinet generally comprises a negative pressure system for providing negative pressure for a negative pressure cup needle bed, a driving box for supplying power to the square power lithium ion battery in the charging and discharging processes, a PLC electrical system for controlling the whole charging and discharging action process and a controller, wherein an air suction port of the negative pressure system is communicated with an air suction port pipeline of the negative pressure cup assembly; the control end of the driving box is electrically connected with the connecting end of the anode needle plate assembly and the connecting end of the cathode needle plate assembly; the voltage output end of the PLC electrical system is respectively and electrically connected with the voltage connecting end of the motion mechanism for the square lithium ion self-adaptive high-temperature negative-pressure formation testing equipment and the voltage connecting end of the controller; and the control end of the controller is electrically connected with the control end of the motion mechanism for the square lithium ion self-adaptive high-temperature negative-pressure formation test equipment.
The frame is formed by welding high-strength square tubes.
The temperature in the constant temperature drying room is 45 +/-3 ℃.
The working process is as follows: the method comprises the steps that materials fed from a full battery tray 1 are conveyed by a stacker → the battery tray 1 is placed on a mechanism bottom frame 6 → a sensor detects whether the tray is placed in place or not → a linear module 12 automatically adjusts the position of a positive electrode needle plate assembly 8, a negative pressure cup assembly 10 and a negative electrode needle plate assembly 11 → a servo electric cylinder 3 driving mechanism middle frame 5 jacks the battery tray 1 in place → a negative pressure and contact condition is detected → the negative pressure leakage rate and the contact condition are detected to be qualified and then automatically issued to a formation process flow → unqualified and then an alarm is applied to change a storage position → the formation charging and discharging process, the system automatically processes data, (the channel system in the former process registers but does not screen NG electric cores, the channel electric cores do not work.) → after the charging and discharging, the servo electric cylinder 3 driving mechanism middle frame 5 and the battery tray 1 to descend in place → the stacker is transported to a discharging conveying line, and the work flow in this section is finished.
In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; may be mechanically coupled, may be electrically coupled or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (9)
1. A motion for square lithium ion self-adaptation high temperature negative pressure becomes test equipment, its characterized in that includes:
the supporting unit comprises a mechanism bottom frame, a guide assembly and a mechanism top frame, the mechanism top frame is horizontally arranged above the mechanism bottom frame through a plurality of sets of guide assemblies, and a test space is reserved between the mechanism top frame and the mechanism bottom frame;
the lifting unit is arranged in the test space and comprises a mechanism middle frame and a lifting driving mechanism, and the mechanism middle frame is slidably arranged on the guide assembly and used for supporting and positioning the battery tray; the lifting driving mechanism is arranged between the mechanism middle frame and the mechanism top frame and is used for driving the mechanism middle frame to vertically lift;
the adjusting and testing unit can change the positions of the positive and negative poles and the negative pressure port of the batteries with different specifications, can automatically adjust the position of the corresponding needle bed, and is compatible with the batteries with various specifications; the adjusting and testing unit is arranged at the bottom of the mechanism top frame and comprises an interval adjusting mechanism and at least one set of testing assembly, and the interval adjusting mechanism is arranged on the inner bottom surface of the mechanism top frame; the testing assembly comprises a positive electrode needle plate assembly, a negative pressure cup assembly and a negative electrode needle plate assembly, the positive electrode needle plate assembly, the negative pressure cup assembly and the negative electrode needle plate assembly are slidably arranged at the bottom of the mechanism top frame, and the positive electrode needle plate assembly, the negative pressure cup assembly and the negative electrode needle plate assembly are respectively connected with the adjusting end of the spacing adjusting mechanism and used for adjusting the spacing among the positive electrode needle plate assembly, the negative pressure cup assembly and the negative electrode needle plate assembly to adapt to square lithium batteries of different specifications; the positive electrode pin plate assembly and the negative electrode pin plate assembly are respectively arranged on two opposite sides of the negative pressure cup assembly; the bottom of the positive electrode needle plate assembly is provided with a row of mutually independent positive poles, the bottom of the negative electrode needle plate assembly is provided with a row of mutually independent negative poles, the bottom of the negative electrode cup assembly is provided with a row of mutually independent negative pressure suction nozzles, and the positive poles of the positive electrode needle plate assembly, the negative pressure suction nozzles of the negative pressure cup assembly and the negative poles of the negative electrode needle plate assembly are respectively connected through connecting pieces.
2. The motion mechanism for the square lithium ion adaptive high-temperature negative-pressure formation test equipment as claimed in claim 1, wherein: the guide assembly comprises a guide shaft and a linear bearing, and the linear bearing is fixedly arranged on the mechanism middle frame; the guide shaft is slidably arranged in the linear bearing in a penetrating manner, and two ends of the guide shaft are respectively fixedly connected with the mechanism bottom frame and the mechanism top frame.
3. The motion mechanism for the square lithium ion adaptive high-temperature negative-pressure formation test equipment as claimed in claim 2, wherein: the lifting driving mechanism comprises two sets of servo electric cylinders and a distance measuring sensor, the servo motor is vertically arranged below the mechanism top frame, the lifting end of the servo motor is connected with the mechanism middle frame, and the two sets of servo electric cylinders synchronously move; each set of servo electric cylinder corresponds to one set of ranging sensor and is used for monitoring the moving distance of the servo electric cylinder in real time.
4. The motion mechanism for the square lithium ion adaptive high-temperature negative-pressure formation test equipment as claimed in claim 3, wherein: the linear guide part comprises linear guide rails, linear guide rail sliding blocks and linear modules, the linear guide rails are horizontally paved on the inner bottom surface of the mechanism top frame, a plurality of linear guide rail sliding blocks are slidably installed on each linear guide rail, every three linear guide rail sliding blocks form a group, and each group of linear guide rail sliding blocks is correspondingly provided with one set of test assembly; the linear module is arranged on the inner bottom surface of the mechanism top frame and is arranged along the axial direction of the linear guide rail, and an adjusting driving part of the linear module is connected with the testing component and used for driving the distance between the testing components.
5. The motion mechanism for the square lithium ion adaptive high-temperature negative-pressure formation test equipment as claimed in claim 2, wherein: the linear module comprises a support frame, a driving part, a one-way screw nut pair and a two-way screw nut pair, and the support frame is arranged at the bottom of the top frame of the rack; the driving part is arranged at one end part of the supporting frame, and the power output end of the driving part is connected with the power input end of the screw-nut pair; the unidirectional screw nut pair and the bidirectional screw nut pair are rotatably arranged on the support frame, and are arranged along the axial direction of the linear guide rail; the power input ends of the unidirectional screw-nut pair and the bidirectional screw-nut pair are connected with the power output end of the driving part, and the first moving assembly on the unidirectional screw-nut pair is connected with the negative pressure cup assembly through the corresponding linear guide rail sliding block; and the second moving assembly on the bidirectional screw nut pair is respectively connected with the anode needle plate assembly and the cathode needle plate assembly through corresponding linear guide rail sliders.
6. The motion mechanism for the square lithium ion adaptive high-temperature negative-pressure formation test equipment as claimed in claim 5, wherein: the support frame comprises a mounting bottom plate, an end mounting plate, a fixed mounting plate, a screw rod supporting plate, a screw rod fixing plate and a dustproof cover plate, wherein the mounting bottom plate is mounted on the inner bottom surface of the top frame of the rack; the fixed mounting plate and the end mounting plate are mounted at the bottom of the mounting bottom plate; the dustproof cover plate is arranged between the end mounting plate and the fixed mounting plate in parallel, and a space for accommodating the unidirectional screw-nut pair and the bidirectional screw-nut pair is reserved between the dustproof cover plate and the mounting bottom plate; the end mounting plate and the fixed mounting plate are respectively provided with the screw rod supporting plate and the screw rod fixing plate.
7. The motion mechanism for the square lithium ion adaptive high-temperature negative-pressure formation test equipment as claimed in claim 5, wherein: the drive division is two sets altogether, one set with one-way screw-nut pair is connected, another set with two-way screw-nut pair is connected, the drive division includes servo motor, speed reducer mounting panel and shaft coupling, servo motor set up in the one end of speed reducer, and servo motor's power take off end with the power input end of speed reducer is connected, the speed reducer passes through the speed reducer mounting panel set firmly in mounting plate's bottom, two sets the speed reducer respectively through the shaft coupling with one-way screw-nut pair's power input end two-way screw-nut pair's power input end is connected.
8. The motion mechanism for the square lithium ion adaptive high-temperature negative-pressure formation test equipment as claimed in claim 7, wherein: the one-way screw rod and nut pair is arranged in a space between the mounting bottom plate and the dustproof cover plate and comprises a one-way screw rod, a first nut and a first nut connecting block, the one-way screw rod is rotatably arranged between the screw rod supporting plate and the screw rod fixing plate, and one end of the one-way screw rod is connected with the power output end of one set of speed reducer through a coupler; the first nut is sleeved on the one-way screw rod, and the internal thread of the first nut is meshed with the external thread of the one-way screw rod; the first nut connecting block is fixedly arranged on the first nut and is connected with the negative pressure cup assembly through a corresponding linear guide rail sliding block.
9. The motion mechanism for the square lithium ion adaptive high-temperature negative-pressure formation test equipment as claimed in claim 7, wherein: the bidirectional screw rod and nut pair is arranged in a space between the mounting bottom plate and the dustproof cover plate and comprises a unidirectional screw rod, a second nut and a second nut connecting block, the bidirectional screw rod is rotatably arranged between the screw rod supporting plate and the screw rod fixing plate, and one end of the bidirectional screw rod is connected with the power output end of one set of speed reducer through a coupler; the bidirectional screw rod is provided with two sections of external threads with opposite rotation directions along the axial direction of the bidirectional screw rod; two thread sections of the bidirectional screw rod are respectively screwed with one second nut; the second nut connecting block is fixedly arranged on the second nut and is connected with the anode needle plate assembly and the cathode needle plate assembly through corresponding linear guide rail sliders.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210091095.7A CN114371406A (en) | 2022-01-26 | 2022-01-26 | Movement mechanism for square lithium ion self-adaptive high-temperature negative pressure formation testing equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210091095.7A CN114371406A (en) | 2022-01-26 | 2022-01-26 | Movement mechanism for square lithium ion self-adaptive high-temperature negative pressure formation testing equipment |
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| CN114371406A true CN114371406A (en) | 2022-04-19 |
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| CN202210091095.7A Pending CN114371406A (en) | 2022-01-26 | 2022-01-26 | Movement mechanism for square lithium ion self-adaptive high-temperature negative pressure formation testing equipment |
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