CN114441110A - Helium leakage detection equipment for battery top cover and working method of helium leakage detection equipment - Google Patents

Helium leakage detection equipment for battery top cover and working method of helium leakage detection equipment Download PDF

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Publication number
CN114441110A
CN114441110A CN202210091122.0A CN202210091122A CN114441110A CN 114441110 A CN114441110 A CN 114441110A CN 202210091122 A CN202210091122 A CN 202210091122A CN 114441110 A CN114441110 A CN 114441110A
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CN
China
Prior art keywords
battery top
top cover
helium
feeding
unit
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CN202210091122.0A
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Chinese (zh)
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秦成英
苏新
兰超
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Suzhou Huagong Automation Technology Co ltd
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Suzhou Huagong Automation Technology Co ltd
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Priority to CN202210091122.0A priority Critical patent/CN114441110A/en
Publication of CN114441110A publication Critical patent/CN114441110A/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/20Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
    • G01M3/202Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material using mass spectrometer detection systems
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B07SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07CPOSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
    • B07C5/00Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
    • B07C5/34Sorting according to other particular properties

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

The invention discloses helium leakage detecting equipment for a battery top cover and a working method thereof. The helium leakage detecting device for the battery top cover comprises a feeding unit, at least one translation unit, at least one leakage detecting unit, a discharging unit, an unqualified product conveying unit and the like, and has the function of detecting the leakage rate of the battery top cover; the problem of detecting the leakage rate of the battery top cover is solved, and the method has good application value.

Description

Helium leakage detection equipment for battery top cover and working method of helium leakage detection equipment
Technical Field
The invention belongs to the technical field of novel efficient energy conversion and storage, and particularly relates to helium leakage detection equipment for a battery top cover. The invention also relates to a working method of the helium leakage detection equipment for the battery top cover.
Background
The battery top cover is used as an important core component of the lithium battery, and is particularly important in the aspect of ensuring the quality and safety of products. The lithium battery comprises a shell, a top cover, a battery cell and the like, wherein the battery cell is arranged in the shell, the upper end of the shell is provided with an upper end opening, and the top cover is sealed at the opening at the upper end of the shell.
The top cover is provided with a welding position, such as the welding of a rupture disk, the installation of a turnover disk, the welding of a conductive block and the like, and the top cover is provided with the welding position, so that when the top cover is subjected to quality detection, whether the welding position is welded and sealed needs to be searched.
In the prior art, helium is filled into a helium leak detector to detect the leak of a welding position of a top cover, but the current leak detection operation has low automation degree and low operation efficiency. Therefore, a set of batch detection equipment capable of detecting leakage of the lithium battery top cover is urgently needed.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects, the invention aims to provide helium leakage detection equipment for a battery top cover, which solves the problems that in the traditional leakage detection process of the lithium battery top cover, the requirement on the skill of an operator is high, the detection time, the detection operation and the detection judgment standard of a product in the detection process are inconsistent due to the influence of a plurality of artificial uncertain factors, the detection error is large, the automation degree is low, the detection speed is low, and the actual production requirement cannot be met.
The technical scheme is as follows: the helium leakage detecting device comprises a rack, a feeding unit, at least one translation unit, at least one leakage detecting unit, a discharging unit and an unqualified product conveying unit, wherein the feeding unit, the at least one translation unit, the at least one leakage detecting unit, the discharging unit and the unqualified product conveying unit are all arranged on the table top of the rack, the at least one leakage detecting unit is arranged in a row, the at least one leakage detecting unit and the at least one translation unit are arranged in a one-to-one correspondence mode, the feeding unit and the discharging unit are respectively located at the head end and the tail end of the row where the at least one translation unit is located, the unqualified product conveying unit and the at least one translation unit are located in the same row, the unqualified product conveying unit is located on one side of the whole of the at least one translation unit, and the unqualified product conveying unit is located between the feeding unit and the discharging unit. The helium leakage detecting device for the battery top cover comprises a feeding unit, at least one translation unit, at least one leakage detecting unit, a discharging unit, an unqualified product conveying unit and the like, and has the function of detecting the leakage rate of the battery top cover; the problem of detecting the leakage rate of the battery top cover is solved, and the method has good application value.
Further, foretell helium leak hunting equipment of battery top cap, the material loading unit includes material loading support frame, material loading horizontal migration module, the vertical removal module of material loading and a set of material loading vacuum suction nozzle, material loading horizontal migration module sets up on the material loading support frame, the vertical removal module of material loading and the horizontal migration movable mould unit connection of material loading, a set of material loading vacuum suction nozzle and the vertical removal module of material loading are connected, material loading horizontal migration module and the vertical removal module of material loading can drive a set of material loading vacuum suction nozzle respectively and carry out the removal of level and vertical direction, the adsorbable battery top cap of a set of material loading vacuum suction nozzle to a set of material loading vacuum suction nozzle can place the battery top cap on the translation unit. The feeding manipulator drives the vacuum suction nozzle to descend through the lifting module to suck the product, and then the translation module moves the product to the tooling of the three detection stations to place the product in the tooling.
Furthermore, the helium leakage detecting device of the battery top cover comprises a translation unit, wherein the translation unit comprises a horizontal movement support frame, a horizontal movement servo motor, a driving wheel, a driven wheel, a synchronous belt clamping plate, two horizontal movement guide rails arranged in parallel, two horizontal movement sliding blocks and a battery top cover placing plate, the horizontal movement servo motor, the driving wheel, the driven wheel and the two horizontal movement guide rails arranged in parallel are all arranged on the horizontal movement support frame, a rotating shaft of the horizontal movement servo motor is connected with the driving wheel, the driving wheel is connected with the driven wheel through the synchronous belt, the synchronous belt clamping plate is fixedly connected with the synchronous belt, the two horizontal movement guide rails arranged in parallel and the two horizontal movement sliding blocks are arranged in a one-to-one correspondence manner, the horizontal movement sliding blocks are connected with the horizontal movement guide rails in a sliding manner, one of the two horizontal movement sliding blocks is connected with the synchronous belt clamping plate, the battery top cover placing plate is fixedly connected with the two horizontal moving sliding blocks, and a group of battery top covers are placed on the battery top cover placing plate. The tooling translation module adopts the servo belt module to transport the tooling, and is rapid, stable and accurate.
Further, the helium leakage detecting device of the battery top cover comprises a leakage detecting pipeline system, a U-shaped leakage detecting support frame, a fan support, a fan, a down-pressing cylinder, a group of helium gas inlet pipes, a helium gas inlet pipe mounting plate, a lower sealing plate, a sealing plate jacking mechanism and a helium gas exhaust pipe, wherein the U-shaped leakage detecting support frame is fixedly arranged on the upper table top of the frame, the leakage detecting pipeline system is connected with the group of helium gas inlet pipes, the fan support and the down-pressing cylinder are both arranged on the top plate of the U-shaped leakage detecting support frame, the fan is arranged on the fan support, the fan is positioned above the battery top cover placing plate, a piston rod of the down-pressing cylinder is connected with the helium gas inlet pipe mounting plate, the helium gas inlet pipe mounting plate is provided with the group of helium gas inlet pipes, and the group of battery top covers on the battery top cover placing plate are arranged in a one-to-one correspondence manner, and the helium intake pipe can compress tightly on the battery top cap, the closing plate climbing mechanism sets up in the frame to closing plate climbing mechanism and lower closing plate are connected, helium intake pipe mounting panel and lower closing plate are located the upper and lower both sides that the board was placed to the battery top cap respectively, closing plate climbing mechanism can drive the closing plate and compress tightly on the board is placed to the battery top cap down, helium blast pipe and lower closing plate are connected. The leak detection mechanism drives the sealing plate to ascend to the bottom of the sealing tool through the jacking cylinder, the pressing cylinder compresses a product in the tool, then the fluid valve controls helium spraying, and the fan pumps away residual helium. Residual helium in the pipeline is firstly pumped by a pre-vacuumizing pump, then the main vacuum pump starts vacuumizing, a vacuum gauge detects that the vacuum of the pipeline reaches a set value, helium is sprayed in the pipeline, a helium mass spectrometer leak detector starts detecting the helium, the leakage rate is analyzed, and the results of good products and defective products are output.
Further, foretell helium leak hunting equipment of battery top cap, closing plate climbing mechanism includes jacking support frame, jacking cylinder, the vertical guide rail of jacking, jacking deflector and closing plate lifter plate, the jacking cylinder sets up on jacking support frame to the piston rod and the closing plate lifter plate of jacking cylinder are connected, the closing plate is fixed to be set up on the closing plate lifter plate down, jacking deflector and closing plate lifter plate are connected to jacking deflector and the vertical guide rail sliding connection of jacking, the vertical setting of the vertical guide rail of jacking is on the vertical lateral wall of jacking support frame, be equipped with sealing washer one and sealing washer two on the closing plate down, sealing washer one and sealing washer two communication settings to sealing washer one and sealing washer two compress tightly between the lower terminal surface that board was placed to closing plate and battery top cap down.
Furthermore, in the helium leak detection device for the battery top cover, the leak detection pipeline system comprises a vacuum gauge, a baffle valve, a pre-vacuum pump, a main vacuum pump and a helium mass spectrometer leak detector, the main vacuum pump and the pre-vacuum pump are respectively connected with a group of helium gas inlet pipes through the baffle valve, the vacuum gauge is arranged on a pipeline connected between the main vacuum pump and the baffle valve, and the helium mass spectrometer leak detector is connected with the helium gas outlet pipe through a pipeline. Detect helium through vacuum pump evacuation and helium mass spectrometer leak detector to this leaks the leakage rate of analysis product, gets the product through the manipulator is automatic, and accomplishes the classification of yields and defective products, solves in the production process inefficiency, artifical numerous and diverse, the problem of easily makeing mistakes.
Further, the aforesaid helium leak hunting equipment of battery top cap, battery top cap is placed and is equipped with a set of battery top cap on the board and places the cave, cave and a set of helium intake pipe one-to-one setting are placed to a set of battery top cap, battery top cap is placed and is equipped with battery top cap in the cave, battery top cap is placed and is equipped with the helium leak hunting pipeline in the board, the cave intercommunication is placed with a set of battery top cap to helium leak hunting pipeline and helium blast pipe intercommunication, be equipped with the sealing washer between helium intake pipe and the battery top cap, the cross-section of sealing washer is circular to be equipped with the protruding one of arc on the up end of sealing washer, the circumference position department of terminal surface all is equipped with protruding two about the sealing washer, be equipped with "protruding" style of calligraphy recess on the sealing washer, cave intercommunication is placed to "protruding" style of calligraphy recess and battery top cap.
Further, foretell helium leak hunting equipment of battery top cap, the unloading unit includes unloading support frame, unloading horizontal migration module, unloading lift module and a set of unloading vacuum suction nozzle, the unloading horizontal migration module sets up on the unloading support frame, unloading lift module and unloading horizontal migration module are connected, a set of unloading vacuum suction nozzle is connected with unloading lift module, unloading horizontal migration module and unloading lift module can drive a set of unloading vacuum suction nozzle respectively and remove along level and vertical direction. The unloading manipulator passes through lifting module and drives the decline of vacuum suction nozzle and absorb the product from three detection station, then the translation module puts the rear end equipment to the yields, and NG belt line is put to the defective products.
Furthermore, foretell helium leak hunting equipment of battery top cap, nonconforming article conveying unit is including carrying the support frame, carrying step motor, carrying the action wheel, carrying the gear area, carrying from driving wheel and nonconforming article conveyer belt, carry step motor and nonconforming article conveyer belt all to set up on carrying the support frame, carry step motor's pivot and carry the action wheel to be connected, carry the action wheel to pass through carrying the gear area and carry to be connected from the driving wheel, carry to connect from driving wheel and nonconforming article conveyer belt.
The invention also provides a working method of the helium leakage detection equipment for the top cover of the battery, which is characterized by comprising the following steps: the method comprises the following steps:
s1, the feeding horizontal moving module drives a group of feeding vacuum suction nozzles to move to the position of a battery top cover material tray, the feeding vertical moving module drives the group of feeding vacuum suction nozzles to descend, the group of feeding vacuum suction nozzles adsorb a group of battery top covers, and the feeding vertical moving module resets;
s2, the feeding horizontal moving module drives a group of feeding vacuum suction nozzles to move to one of the translation unit positions, the group of feeding vacuum suction nozzles move to the position right above the battery top cover placing plate, the feeding vertical moving module drives the group of feeding vacuum suction nozzles to descend, and the group of feeding vacuum suction nozzles release the group of battery top covers in the group of battery top cover placing holes;
s3, removing helium, starting a fan, and spraying nitrogen to the leakage detection unit to neutralize the helium so as to reduce the content of the helium in the air;
s4, working of the translation unit: the horizontal movement servo motor is started, the synchronous belt is driven to move through the transmission of the driving wheel and the driven wheel, and the synchronous belt drives the battery top cover placing plate to move to the position of the leakage detecting unit along two horizontal movement guide rails which are arranged in parallel;
s5, initially, a certain gap is formed between the helium gas inlet pipe mounting plate and the lower sealing plate, and the translation unit drives the battery top cover placing plate to move between the helium gas inlet pipe mounting plate and the lower sealing plate;
s6, working of the leakage detection unit: a piston rod of the downward pressing cylinder extends out to push the helium gas inlet pipe mounting plate to move downwards, so that the group of helium gas inlet pipes move downwards, and the lower end parts of the group of helium gas inlet pipes are tightly pressed on the sealing rings on the battery top covers in the battery top cover placing cavities;
s6-1, the sealing plate jacking mechanism works: a piston rod of the jacking cylinder extends out to push the sealing plate lifting plate to ascend along the jacking vertical guide rail until the lower sealing plate is tightly pressed on the lower end face of the battery top cover placing plate, and at the moment, the helium gas exhaust pipe is communicated with a group of battery top cover placing holes through pipelines in the battery top cover placing plate;
s6-2, starting a main vacuum pump, opening a baffle valve, filling helium into a group of helium gas inlet pipes, enabling the helium to be in contact with a battery top cover, enabling the helium in the helium gas inlet pipes to penetrate through the battery top cover once leakage occurs, enabling the helium to flow to a helium gas outlet pipe through a battery top cover placing hole, connecting the helium gas outlet pipe with a helium mass spectrometer leak detector, and detecting the helium by the helium mass spectrometer leak detector;
s6-4, after the detection is finished, resetting the sealing plate jacking mechanism and the pressing cylinder;
s7, working of the translation unit: the horizontal movement servo motor is started, the synchronous belt is driven to move through the transmission of the driving wheel and the driven wheel, and the synchronous belt drives the battery top cover placing plate to move to one side of the blanking unit along two parallel horizontal movement guide rails;
s8, the blanking unit works: the blanking horizontal moving module and the blanking lifting module drive a group of blanking vacuum suction nozzles to move horizontally and vertically, so that the group of blanking vacuum suction nozzles can adsorb the detected battery top cover on the battery top cover placing plate;
s9, driving a group of blanking vacuum suction nozzles to move to a qualified station and an unqualified product conveying unit by the blanking horizontal moving module and the blanking lifting module, and respectively releasing qualified products and unqualified products on the qualified station and the unqualified product conveying unit;
and S10, the unqualified product conveying unit sends a signal after detecting that the unqualified battery top cover is full through the correlation sensor, and informs a worker to take the unqualified battery top cover away.
The working method of the helium leakage detection equipment for the battery top cover is simple and easy in working principle, high in automation degree of the working process, low in manpower requirement, high in production efficiency and suitable for industrial large-scale application.
The technical scheme shows that the invention has the following beneficial effects: according to the helium leakage detecting device for the battery top cover, the battery top cover is taken out from front-end equipment through the feeding mechanical arm and placed into a tool of the translation module, the leakage detecting mechanism is used for carrying out sealed helium spraying leakage detection on a product, the blanking mechanical arm is used for carrying out leakage detection on a good product and placing the good product into rear-end equipment, and a defective product for leakage detection is placed into a belt line for a defective product. The working method of the helium leakage detection equipment for the battery top cover can realize automatic feeding and discharging, and automatically, accurately and quickly analyze the leakage rate of a product; the equipment is high in production efficiency and reliability, has good compatibility, can effectively reduce labor, reduces labor intensity of workers and improves product quality.
Drawings
FIG. 1 is a schematic structural diagram of the appearance of a helium leak detection device of a battery top cover according to the invention;
FIG. 2 is a schematic structural view of a helium leak detection apparatus for a battery top cover according to the present invention;
FIG. 3 is a schematic structural diagram of a loading unit according to the present invention;
FIG. 4 is a schematic structural diagram of a translation unit according to the present invention;
FIG. 5 is a schematic diagram of a leak detection unit of the present invention;
FIG. 6 is a schematic diagram of a leak detection piping system according to the present invention;
FIG. 7 is a schematic structural view of a sealing plate jacking mechanism according to the present invention;
fig. 8 is a schematic structural view of a battery top cover placing plate according to the present invention;
FIG. 9 is a schematic structural view of an electric sealing ring according to the present invention;
FIG. 10 is a schematic structural view of a blanking unit according to the present invention;
fig. 11 is a schematic structural view of a defective conveying unit according to the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be considered as limiting the present 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 one or more of that feature. In the description of the present invention, unless otherwise specified, "a plurality" means two or more unless explicitly defined otherwise.
In the present invention, unless otherwise expressly specified 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 connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. 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, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Examples
The helium leakage detection device for the battery top cover shown in fig. 1 and 2 comprises a frame 1, a feeding unit 2, at least one translation unit 3, at least one leakage detection unit 4, a blanking unit 5 and a defective product conveying unit 6, wherein the feeding unit 2, the at least one translation unit 3, the at least one leakage detection unit 4, the blanking unit 5 and the defective product conveying unit 6 are all arranged on the table top of the frame 1, the at least one leakage detection unit 4 is arranged in a column, the at least one leakage detection unit 4 and the at least one translation unit 3 are arranged in a one-to-one correspondence manner, the feeding unit 2 and the blanking unit 5 are respectively arranged at the head end and the tail end of the column where the at least one translation unit 3 is arranged, the defective product conveying unit 6 and the at least one translation unit 3 are arranged in the same column, and the defective product conveying unit 6 is arranged on one side of the whole at least one translation unit 3, the defective product conveying unit 6 is located between the feeding unit 2 and the discharging unit 5.
The feeding unit 2 shown in fig. 3 includes a feeding support frame 21, a feeding horizontal moving module 22, a feeding vertical moving module 23, and a set of feeding vacuum nozzles 24, where the feeding horizontal moving module 22 is disposed on the feeding support frame 21, the feeding vertical moving module 23 is connected to the feeding horizontal moving module 22, the set of feeding vacuum nozzles 24 is connected to the feeding vertical moving module 23, the feeding horizontal moving module 22 and the feeding vertical moving module 23 can respectively drive the set of feeding vacuum nozzles 24 to move horizontally and vertically, the set of feeding vacuum nozzles 24 can absorb battery top covers, and the set of feeding vacuum nozzles 24 can place battery top covers on the horizontal moving unit 3.
The translation unit 3 shown in fig. 4 includes a horizontal movement support frame 31, a horizontal movement servo motor 32, a driving wheel 33, a driven wheel 34, a synchronous belt 35, a synchronous belt clamping plate 36, two parallel horizontal movement guide rails 37, two horizontal movement sliding blocks 38 and a battery top cover placing plate 39, wherein the horizontal movement servo motor 32, the driving wheel 33, the driven wheel 34 and the two parallel horizontal movement guide rails 37 are all arranged on the horizontal movement support frame 31, a rotating shaft of the horizontal movement servo motor 32 is connected with the driving wheel 33, the driving wheel 33 is connected with the driven wheel 34 through the synchronous belt 35, the synchronous belt clamping plate 36 is fixedly connected with the synchronous belt 35, the two parallel horizontal movement guide rails 37 and the two horizontal movement sliding blocks 38 are arranged in a one-to-one correspondence, the horizontal movement sliding blocks 38 are slidably connected with the horizontal movement guide rails 37, one of the two horizontal movement sliding blocks 38 is connected with the synchronous belt clamping plate 36, the battery top cover placing plate 39 is fixedly connected with the two horizontal moving sliding blocks 38, and a group of battery top covers are placed on the battery top cover placing plate 39.
The leak detection unit 4 shown in fig. 5 includes a leak detection pipeline system 41, a U-shaped leak detection support frame 42, a fan bracket 43, a fan 44, a down-pressure cylinder 45, a set of helium gas inlet pipes 46, a helium gas inlet pipe mounting plate 47, a lower sealing plate 48, a sealing plate jacking mechanism 49 and a helium gas exhaust pipe 410, the U-shaped leak detection support frame 42 is fixedly arranged on the upper table surface of the rack 1, the leak detection pipeline system 41 is connected with the set of helium gas inlet pipes 46, the fan bracket 43 and the down-pressure cylinder 45 are both arranged on the top plate of the U-shaped leak detection support frame 42, the fan 44 is arranged on the fan bracket 43, the fan 44 is located above the battery top cover placing plate 39, the piston rod of the down-pressure cylinder 45 is connected with the helium gas inlet pipe mounting plate 47, the helium gas inlet pipe mounting plate 47 is provided with a set of helium gas inlet pipes 46, the set of helium gas inlet pipes 46 and a set of battery top covers on the battery top cover placing plate 39 are arranged in a one-to-one correspondence, the helium inlet pipe 46 can be pressed on the battery top cover, the sealing plate jacking mechanism 49 is arranged on the rack 1, the sealing plate jacking mechanism 49 is connected with the lower sealing plate 48, the helium inlet pipe mounting plate 47 and the lower sealing plate 48 are respectively positioned at the upper side and the lower side of the battery top cover placing plate 39, the sealing plate jacking mechanism 49 can drive the lower sealing plate 48 to be pressed on the battery top cover placing plate 39, and the helium exhaust pipe 410 is connected with the lower sealing plate 48.
The sealing plate jacking mechanism 49 shown in fig. 7 comprises a jacking support 491, a jacking cylinder 492, a jacking vertical guide rail 493, a jacking guide plate 494 and a sealing plate lifting plate 495, wherein the jacking cylinder 492 is arranged on the jacking support 491, and the piston rod of the jacking cylinder 492 is connected with the sealing plate lifting plate 495, the lower sealing plate 48 is fixedly arranged on the sealing plate lifting plate 495, the jacking guide plate 494 is connected with the sealing plate lifting plate 495, and the jacking guide plate 494 is connected with the jacking vertical guide rail 493 in a sliding manner, the jacking vertical guide rail 493 is vertically arranged on the vertical side wall of the jacking support frame 491, the lower sealing plate 48 is provided with a first sealing ring 481 and a second sealing ring 482, the first sealing ring 481 and the second sealing ring 482 are arranged in a communication way, and the first and second seal rings 481 and 482 are compressed between the lower seal plate 48 and the lower end surface of the battery top cover placing plate 39.
Leak detection piping system 41 shown in fig. 6 includes a vacuum gauge 411, a flapper valve 412, a pre-evacuation pump 413, a main vacuum pump 414, and a helium mass spectrometer leak detector 415, the main vacuum pump 414 and the pre-evacuation pump 413 being connected to a set of helium gas feed lines 46 through the flapper valve 412, respectively, the vacuum gauge 411 being provided in piping connected between the main vacuum pump 414 and the flapper valve 412, and the helium mass spectrometer leak detector 415 and the helium gas discharge line 410 being connected by piping.
As shown in fig. 8 and 9, a group of battery top cover placing holes 391 are formed in the battery top cover placing plate 39, the group of battery top cover placing holes 391 and a group of helium gas inlet pipes 46 are arranged in a one-to-one correspondence manner, battery top covers are arranged in the battery top cover placing holes 391, helium gas leakage detecting pipelines are arranged in the battery top cover placing plate 39, the helium gas leakage detecting pipelines are communicated with the group of battery top cover placing holes 391, the helium gas leakage detecting pipelines are communicated with a helium gas outlet pipe 410, a sealing ring 461 is arranged between the helium gas inlet pipe 46 and the battery top cover, the cross section of the sealing ring 461 is circular, an arc-shaped first 462 is arranged on the upper end surface of the sealing ring 461, two protrusions 463 are arranged at the circumferential positions of the upper and lower end surfaces of the sealing ring 461, a "convex" groove 464 is arranged on the sealing ring 461, and the "convex" groove 464 is communicated with the battery top cover placing holes 391.
The blanking unit 5 shown in fig. 10 includes a blanking support frame 51, a blanking horizontal movement module 52, a blanking lifting module 53 and a set of blanking vacuum nozzles 54, wherein the blanking horizontal movement module 52 is disposed on the blanking support frame 51, the blanking lifting module 53 is connected to the blanking horizontal movement module 52, the set of blanking vacuum nozzles 54 is connected to the blanking lifting module 53, and the blanking horizontal movement module 52 and the blanking lifting module 53 can respectively drive the set of blanking vacuum nozzles 54 to move in the horizontal and vertical directions.
The defective product conveying unit 6 shown in fig. 11 includes a conveying support frame 61, a conveying stepping motor 62, a conveying driving wheel 63, a conveying gear belt 64, a conveying driven wheel 65 and a defective product conveying belt 66, wherein the conveying stepping motor 62 and the defective product conveying belt 66 are both disposed on the conveying support frame 61, the rotating shaft of the conveying stepping motor 62 is connected with the conveying driving wheel 63, the conveying driving wheel 63 is connected with the conveying driven wheel 65 through the conveying gear belt 64, and the conveying driven wheel 65 is connected with the defective product conveying belt 66.
Based on the structure, the working method of the helium leakage detection equipment for the battery top cover comprises the following steps:
s1, the feeding horizontal moving module 22 drives a group of feeding vacuum suction nozzles 24 to move to the positions of the battery top cover trays, the feeding vertical moving module 23 drives the group of feeding vacuum suction nozzles 24 to descend, the group of feeding vacuum suction nozzles 24 adsorb a group of battery top covers, and the feeding vertical moving module 23 resets;
s2, the feeding horizontal moving module 22 drives the group of feeding vacuum suction nozzles 24 to move to one of the positions of the moving unit 3, the group of feeding vacuum suction nozzles 24 moves to a position right above the battery top cover placing plate 39, the feeding vertical moving module 23 drives the group of feeding vacuum suction nozzles 24 to descend, and the group of feeding vacuum suction nozzles 24 releases the group of battery top covers in the group of battery top cover placing holes 391;
s3, removing helium, starting the fan 44, and spraying nitrogen to the leak detection unit 4 to neutralize the helium so as to reduce the content of the helium in the air;
s4, the translation unit 3 works: the horizontal movement servo motor 32 is started, the synchronous belt 35 is driven to move through the transmission of the driving wheel 33 and the driven wheel 34, and the synchronous belt 35 drives the battery top cover placing plate 39 to move to the position of the leakage detection unit 4 along two horizontal movement guide rails 37 which are arranged in parallel;
s5, initially, a gap is provided between the helium inlet pipe mounting plate 47 and the lower sealing plate 48, and the translation unit 3 drives the battery top cover placing plate 39 to move between the helium inlet pipe mounting plate 47 and the lower sealing plate 48;
s6, operation of the leakage detection unit 4: the piston rod of the downward-pressing cylinder 45 extends out to push the helium gas inlet pipe mounting plate 47 to move downwards, so that the group of helium gas inlet pipes 46 move downwards, and the lower end parts of the group of helium gas inlet pipes 46 are pressed on the sealing rings 461 on the battery top covers in the group of battery top cover placing holes 391;
s6-1, the sealing plate jacking mechanism 49 works: the piston rod of the jacking cylinder 492 extends out to push the sealing plate lifting plate 495 to ascend along the jacking vertical guide rail 493 until the lower sealing plate 48 is pressed against the lower end surface of the battery top cover placing plate 39, and at this time, the helium gas exhaust pipe 410 is communicated with a group of battery top cover placing holes 391 through a pipeline in the battery top cover placing plate 39;
s6-2, starting the main vacuum pump 414, opening the flapper valve 412, filling helium into a set of helium gas inlet pipes 46, the helium contacting the top cover of the battery, once leakage occurs, the helium in the helium gas inlet pipes 46 passing through the top cover of the battery and flowing to the position of the helium gas outlet pipe 410 through the battery top cover placing hole 391, the helium gas outlet pipe 410 being connected to the helium mass spectrometer 415, the helium mass spectrometer 415 detecting helium;
s6-4, after the detection is finished, the sealing plate jacking mechanism 49 and the pressing cylinder 45 are reset;
s7, the translation unit 3 works: the horizontal movement servo motor 32 is started, the synchronous belt 35 is driven to move through the transmission of the driving wheel 33 and the driven wheel 34, and the synchronous belt 35 drives the battery top cover placing plate 39 to move to one side of the blanking unit 5 along two parallel horizontal movement guide rails 37;
s8, the blanking unit 5 works: the blanking horizontal moving module 52 and the blanking lifting module 53 drive the group of blanking vacuum suction nozzles 54 to move horizontally and vertically, so that the group of blanking vacuum suction nozzles 54 can absorb the detected battery top cover on the battery top cover placing plate 39;
s9, the blanking horizontal moving module 52 and the blanking lifting module 53 drive a group of blanking vacuum suction nozzles 54 to move to the qualified station and the unqualified product conveying unit 6, and the qualified product and the unqualified product are respectively released at the qualified station and on the unqualified product conveying unit 6;
and S10, the unqualified product conveying unit 6 sends a signal after detecting that the unqualified battery top cover is full through the correlation sensor, and informs a worker to take the unqualified battery top cover away.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the present invention, and these modifications should also be construed as the protection scope of the present invention.

Claims (10)

1. The utility model provides a helium leak hunting equipment of battery top cap which characterized in that: the device comprises a rack (1), a feeding unit (2), at least one translation unit (3), at least one leakage detection unit (4), a blanking unit (5) and an unqualified product conveying unit (6), wherein the feeding unit (2), the at least one translation unit (3), the at least one leakage detection unit (4), the blanking unit (5) and the unqualified product conveying unit (6) are all arranged on the table top of the rack (1), the at least one leakage detection unit (4) is arranged in a row, the at least one leakage detection unit (4) and the at least one translation unit (3) are arranged in a one-to-one correspondence manner, the feeding unit (2) and the blanking unit (5) are respectively positioned at the head end and the tail end of the row where the at least one translation unit (3) is positioned, the unqualified product conveying unit (6) and the at least one translation unit (3) are positioned in the same row, and the unqualified product conveying unit (6) is positioned on one side of the whole of the at least one translation unit (3), the unqualified product conveying unit (6) is positioned between the feeding unit (2) and the discharging unit (5).
2. Helium leak detection apparatus for battery top cover as claimed in claim 1, wherein: the feeding unit (2) comprises a feeding support frame (21), a feeding horizontal moving module (22), a feeding vertical moving module (23) and a set of feeding vacuum suction nozzles (24), the feeding horizontal moving module (22) is arranged on the feeding support frame (21), the feeding vertical moving module (23) is connected with the feeding horizontal moving module (22), the set of feeding vacuum suction nozzles (24) is connected with the feeding vertical moving module (23), the feeding horizontal moving module (22) and the feeding vertical moving module (23) can respectively drive the set of feeding vacuum suction nozzles (24) to move in the horizontal direction and the vertical direction, the set of feeding vacuum suction nozzles (24) can absorb the battery top cover, and the battery top cover can be placed on the translation unit (3) through the set of feeding vacuum suction nozzles (24).
3. Helium leak detection apparatus for battery top cover as claimed in claim 1, wherein: the translation unit (3) comprises a horizontal movement support frame (31), a horizontal movement servo motor (32), a driving wheel (33), a driven wheel (34), a synchronous belt (35), a synchronous belt clamping plate (36), two parallel horizontal movement guide rails (37), two horizontal movement sliding blocks (38) and a battery top cover placing plate (39), wherein the horizontal movement servo motor (32), the driving wheel (33), the driven wheel (34) and the two parallel horizontal movement guide rails (37) are all arranged on the horizontal movement support frame (31), a rotating shaft of the horizontal movement servo motor (32) is connected with the driving wheel (33), the driving wheel (33) is connected with the driven wheel (34) through the synchronous belt (35), the synchronous belt clamping plate (36) is fixedly connected with the synchronous belt (35), the two parallel horizontal movement guide rails (37) and the two horizontal movement sliding blocks (38) are arranged in a one-to-one correspondence manner, and the horizontal moving sliding blocks (38) are connected with the horizontal moving guide rails (37) in a sliding manner, one of the two horizontal moving sliding blocks (38) is connected with the synchronous belt clamping plate (36), the battery top cover placing plate (39) is fixedly connected with the two horizontal moving sliding blocks (38), and a group of battery top covers are placed on the battery top cover placing plate (39).
4. Helium leak detection apparatus for battery top cover as claimed in claim 1, wherein: the leakage detection unit (4) comprises a leakage detection pipeline system (41), a U-shaped leakage detection supporting frame (42), a fan bracket (43), a fan (44), a down-pressing cylinder (45), a group of helium gas inlet pipes (46), a helium gas inlet pipe mounting plate (47), a lower sealing plate (48), a sealing plate jacking mechanism (49) and a helium gas exhaust pipe (410), wherein the U-shaped leakage detection supporting frame (42) is fixedly arranged on the upper table top of the frame (1), the leakage detection pipeline system (41) is connected with the group of helium gas inlet pipes (46), the fan bracket (43) and the down-pressing cylinder (45) are both arranged on the top plate of the U-shaped leakage detection supporting frame (42), the fan (44) is arranged on the fan bracket (43), the fan (44) is positioned above the battery top cover placing plate (39), and the piston rod of the down-pressing cylinder (45) is connected with the helium gas inlet pipe mounting plate (47), and be equipped with a set of helium intake pipe (46) on helium intake pipe mounting panel (47), a set of battery top cap one-to-one setting on a set of helium intake pipe (46) and the battery top cap board (39) is placed to the battery top cap to helium intake pipe (46) can compress tightly on the battery top cap, sealing plate climbing mechanism (49) set up on frame (1) to sealing plate climbing mechanism (49) and lower sealing plate (48) are connected, helium intake pipe mounting panel (47) and lower sealing plate (48) are located the upper and lower both sides of battery top cap board (39) respectively, sealing plate climbing mechanism (49) can drive lower sealing plate (48) and compress tightly on battery top cap board (39), helium blast pipe (410) and lower sealing plate (48) are connected.
5. Helium leak detection apparatus for battery top cover as claimed in claim 4, wherein: the sealing plate jacking mechanism (49) comprises a jacking support frame (491), a jacking cylinder (492), a jacking vertical guide rail (493), a jacking guide plate (494) and a sealing plate lifting plate (495), the jacking cylinder (492) is arranged on the jacking support frame (491), a piston rod of the jacking cylinder (492) is connected with the sealing plate lifting plate (495), the lower sealing plate (48) is fixedly arranged on the sealing plate lifting plate (495), the jacking guide plate (494) is connected with the jacking vertical guide rail (493) in a sliding mode, the jacking vertical guide rail (493) is vertically arranged on the vertical side wall of the jacking support frame (491), a sealing ring I (481) and a sealing ring II (482) are arranged on the lower sealing plate (48), and the sealing ring I (481) and the sealing ring II (482) are arranged in a communication mode, and the seal ring one (481) and the seal ring two (482) are pressed between the lower seal plate (48) and the lower end face of the battery top cover placing plate (39).
6. Helium leak detection apparatus for battery top cover as claimed in claim 5, wherein: the leak detection pipeline system (41) comprises a vacuum gauge (411), a baffle valve (412), a pre-vacuum pump (413), a main vacuum pump (414) and a helium mass spectrometer leak detector (415), wherein the main vacuum pump (414) and the pre-vacuum pump (413) are respectively connected with a group of helium gas inlet pipes (46) through the baffle valve (412), the vacuum gauge (411) is arranged on a pipeline connected between the main vacuum pump (414) and the baffle valve (412), and the helium mass spectrometer leak detector (415) is connected with a helium gas outlet pipe (410) through a pipeline.
7. Helium leak detection apparatus for battery top cover as claimed in claim 6, wherein: a group of battery top cover placing holes (391) are formed in the battery top cover placing plate (39), the group of battery top cover placing holes (391) and a group of helium gas inlet pipes (46) are arranged in a one-to-one correspondence mode, battery top covers are arranged in the battery top cover placing holes (391), a helium gas leakage detecting pipeline is arranged in the battery top cover placing plate (39), the helium gas leakage detecting pipeline is communicated with the group of battery top cover placing holes (391), the helium gas leakage detecting pipeline is communicated with a helium gas exhaust pipe (410), a sealing ring (461) is arranged between the helium gas inlet pipes (46) and the battery top covers, the cross section of the sealing ring (461) is circular, an arc-shaped first bulge (462) is arranged on the upper end face of the sealing ring (461), bulge second (463) are arranged at the circumferential positions of the upper end face and the lower end face of the sealing ring (461), and a convex-shaped groove (464) is arranged on the sealing ring (461), the convex groove (464) is communicated with the battery top cover placing hole (391).
8. Helium leak detection apparatus for battery top cover as claimed in claim 1, wherein: unloading unit (5) are including unloading support frame (51), unloading horizontal migration module (52), unloading lift module (53) and a set of unloading vacuum nozzle (54), unloading horizontal migration module (52) set up on unloading support frame (51), unloading lift module (53) and unloading horizontal migration module (52) are connected, a set of unloading vacuum nozzle (54) and unloading lift module (53) are connected, unloading horizontal migration module (52) and unloading lift module (53) can drive a set of unloading vacuum nozzle (54) respectively and remove along level and vertical direction.
9. Helium leak detection apparatus for a battery top cover as defined in claim 1, wherein: the unqualified product conveying unit (6) comprises a conveying support frame (61), a conveying stepping motor (62), a conveying driving wheel (63), a conveying gear belt (64), a conveying driven wheel (65) and an unqualified product conveying belt (66), wherein the conveying stepping motor (62) and the unqualified product conveying belt (66) are both arranged on the conveying support frame (61), a rotating shaft of the conveying stepping motor (62) is connected with the conveying driving wheel (63), the conveying driving wheel (63) is connected with the conveying driven wheel (65) through the conveying gear belt (64), and the conveying driven wheel (65) is connected with the unqualified product conveying belt (66).
10. A working method of helium leakage detection equipment for a battery top cover is characterized by comprising the following steps: the method comprises the following steps:
s1, the feeding horizontal moving module (22) drives a group of feeding vacuum suction nozzles (24) to move to the positions of the battery top cover material trays, the feeding vertical moving module (23) drives the group of feeding vacuum suction nozzles (24) to descend, the group of feeding vacuum suction nozzles (24) adsorb a group of battery top covers, and the feeding vertical moving module (23) resets;
s2, the feeding horizontal moving module (22) drives a group of feeding vacuum suction nozzles (24) to move to the position of one of the translation units (3), the group of feeding vacuum suction nozzles (24) move to the position right above the battery top cover placing plate (39), the feeding vertical moving module (23) drives the group of feeding vacuum suction nozzles (24) to descend, and the group of feeding vacuum suction nozzles (24) release the group of battery top covers in the group of battery top cover placing holes (391);
s3, removing helium, starting a fan (44), and spraying nitrogen to the leakage detection unit (4) to neutralize the helium so as to reduce the content of the helium in the air;
s4, the translation unit (3) works: the horizontal movement servo motor (32) is started, a synchronous belt (35) is driven to move through the transmission of a driving wheel (33) and a driven wheel (34), and the synchronous belt (35) drives a battery top cover placing plate (39) to move to the position of the leakage detection unit (4) along two horizontal movement guide rails (37) which are arranged in parallel;
s5, initially, a certain gap is formed between the helium gas inlet pipe mounting plate (47) and the lower sealing plate (48), and the translation unit (3) drives the battery top cover placing plate (39) to move between the helium gas inlet pipe mounting plate (47) and the lower sealing plate (48);
s6, the leak detection unit (4) works: a piston rod of the downward pressing cylinder (45) extends out to push the helium gas inlet pipe mounting plate (47) to move downwards, so that the group of helium gas inlet pipes (46) move downwards, and the lower end parts of the group of helium gas inlet pipes (46) are pressed on a sealing ring (461) on a battery top cover in the group of battery top cover placing holes (391);
s6-1, the sealing plate jacking mechanism (49) works: a piston rod of the jacking cylinder (492) extends out to push the sealing plate lifting plate (495) to ascend along the jacking vertical guide rail (493) until the lower sealing plate (48) is pressed on the lower end surface of the battery top cover placing plate (39), and at the moment, the helium gas exhaust pipe (410) is communicated with a group of battery top cover placing holes (391) through a pipeline in the battery top cover placing plate (39);
s6-2, starting a main vacuum pump (414), opening a baffle valve (412), filling helium into a set of helium gas inlet pipes (46), enabling the helium to be in contact with a battery top cover, enabling the helium in the helium gas inlet pipes (46) to pass through the battery top cover once leakage occurs, enabling the helium in the helium gas inlet pipes (46) to flow to a helium gas outlet pipe (410) through a battery top cover placing hole (391), connecting the helium gas outlet pipe (410) with a helium mass spectrometer leak detector (415), and detecting the helium by the helium mass spectrometer leak detector (415);
s6-4, after detection is finished, the sealing plate jacking mechanism (49) and the pressing cylinder (45) reset;
s7, the translation unit (3) works: the horizontal movement servo motor (32) is started, a synchronous belt (35) is driven to move through the transmission of a driving wheel (33) and a driven wheel (34), and the synchronous belt (35) drives a battery top cover placing plate (39) to move to one side of the blanking unit (5) along two parallel horizontal movement guide rails (37);
s8, the blanking unit (5) works: the blanking horizontal moving module (52) and the blanking lifting module (53) drive a group of blanking vacuum suction nozzles (54) to move horizontally and vertically, so that the battery top covers detected on the battery top cover placing plate (39) are adsorbed by the group of blanking vacuum suction nozzles (54);
s9, driving a group of blanking vacuum suction nozzles (54) to move to a qualified station and an unqualified product conveying unit (6) by a blanking horizontal moving module (52) and a blanking lifting module (53), and respectively releasing qualified products and unqualified products on the qualified station and the unqualified product conveying unit (6);
and S10, the unqualified product conveying unit (6) sends a signal after detecting that the unqualified battery top cover is full through the correlation sensor, and informs a worker to take the unqualified battery top cover away.
CN202210091122.0A 2022-01-26 2022-01-26 Helium leakage detection equipment for battery top cover and working method of helium leakage detection equipment Pending CN114441110A (en)

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