CN110208092A - Device for testing tensile force and battery pack wiring - Google Patents
Device for testing tensile force and battery pack wiring Download PDFInfo
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- CN110208092A CN110208092A CN201910533291.3A CN201910533291A CN110208092A CN 110208092 A CN110208092 A CN 110208092A CN 201910533291 A CN201910533291 A CN 201910533291A CN 110208092 A CN110208092 A CN 110208092A
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- 238000012360 testing method Methods 0.000 title claims abstract description 79
- 230000000712 assembly Effects 0.000 claims abstract description 27
- 238000000429 assembly Methods 0.000 claims abstract description 27
- 230000005484 gravity Effects 0.000 claims description 11
- 230000004308 accommodation Effects 0.000 claims description 9
- 230000007306 turnover Effects 0.000 claims description 9
- 238000001514 detection method Methods 0.000 abstract description 10
- 238000009864 tensile test Methods 0.000 abstract description 8
- 239000012535 impurity Substances 0.000 abstract description 5
- 238000003466 welding Methods 0.000 description 23
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 8
- 230000008602 contraction Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007717 exclusion Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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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
- H01M10/04—Construction or manufacture in general
- H01M10/0422—Cells or battery with cylindrical casing
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M6/00—Primary cells; Manufacture thereof
- H01M6/005—Devices for making primary cells
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
This application discloses a kind of device for testing tensile force and battery pack wiring.The device for testing tensile force includes: that clamp assemblies include clamping jaw and clamping actuator, and clamping jaw is connect with clamping actuator；Test driver component includes connecting plate, pressure detecting part, constant force supporting element and lifting actuator, pressure detecting part is connected to the top side of connecting plate, clamping actuator is set on pressure detecting part, and the bottom side connection of constant force supporting element and connecting plate, the driving end for going up and down actuator is set on connecting plate；Wherein, constant force supporting element is at least used to provide the top lift to connecting plate, pressure detecting part and clamp assemblies, and lifting actuator is used to adjust connecting plate lifting to provide test required pulling force.By the above-mentioned means, device for testing tensile force provided by the present application can detect the quality of workpiece weld from the lower section of workpiece, impurity drops into workpiece when having evaded detection risk and the precision for improving tensile test.
Description
Technical field
This application involves battery production equipment technical fields, more particularly to a kind of device for testing tensile force and battery assembly
Line.
Background technique
Cylindrical battery is mainly made of shell, nut cap, battery core etc., and the tab in battery core need to weld together with nut cap, weldering
Nut cap after connecing generally requires to carry out tensile test to it, to detect the quality of welding quality.
Tab is often provided with weld strength detection by prior art tensile test upward, and detection mode is drawn using spring
The modes such as power detect, and in the detection process, since tab is set to battery case overthe openings, will lead to impurity and fall into battery case
In opening, battery reliability is influenced.
Summary of the invention
The application mainly provides a kind of device for testing tensile force and battery pack wiring, with battery case opening direction downward when can
Detect the quality of tab and nut cap weld.
In order to solve the above technical problems, the technical solution that the application uses is: providing a kind of device for testing tensile force.It should
Device for testing tensile force includes: that clamp assemblies include clamping jaw and clamping actuator, and clamping jaw is connect with clamping actuator；Test driver group
Part includes that connecting plate, pressure detecting part, constant force supporting element and lifting actuator, pressure detecting part are connected to the top side of connecting plate,
Clamping actuator is set on pressure detecting part, and the bottom side connection of constant force supporting element and connecting plate goes up and down the driving end of actuator
It is set on connecting plate；Wherein, constant force supporting element is at least used to provide the jacking to connecting plate, pressure detecting part and clamp assemblies
Power, lifting actuator are used to adjust connecting plate lifting to provide test required pulling force.
In one embodiment, the Test driver component further includes overload protection part, the overload protection part connection
In on the connecting plate, the lifting actuator passes through the piston axis connection of link block and the overload protection part.
In one embodiment, the top lift of the constant force supporting element is equal to the clamp assemblies, the connecting plate, institute
State the sum of the gravity of pressure detecting part and the overload protection part.
In one embodiment, the overload protection part is low rubbing cylinder, suffered by the low rubbing cylinder
When value of thrust is less than default value of thrust, the piston shaft of the low rubbing cylinder is in contraction state；In the low rubbing cylinder institute
When the value of thrust being subject to is equal to or more than default value of thrust, the piston shaft of the low rubbing cylinder is in stretching state, and can quilt
The lifting actuator pulls out；
Wherein, the ratio range of the test pulling force threshold value of the default value of thrust and the workpiece is 1 to 2.
In one embodiment, the clamping jaw includes spaced first clamping member and the second clamping piece, and described
One clamping piece has the first escape groove, and described first clamping member has the second escape groove, described first clamping member and described second
Clamping piece is connect with the clamping actuator, and the clamping actuator is for driving described first clamping member and the second clamping piece
Clamping workpiece.
In one embodiment, the device for testing tensile force further includes pulp-collecting box, and the pulp-collecting box is set to the work
The downside of part, for receiving the discarded workpiece.
In one embodiment, the device for testing tensile force further includes overturning jig, and the overturning jig includes:
Fixture, including bracket and supporting plate, the two sides of the bracket are respectively connected with the supporting plate, and the bracket has accommodation groove
And the side of the accommodation groove is provided with magnet, the supporting plate has escape groove；
Component, including fixing seat, shaft, balance and the first elastic component are overturn, one end of the shaft and the bracket connect
It connects, the other end of the shaft is connect with the balance, and the shaft and the fixing seat are rotatablely connected, first elasticity
Part is set between the balance and the fixing seat；
Wherein, the balance can be driven in the fixing seat limited range and swing, and when without outer power drive
First position or the second position in the fixing seat are resisted against by the elastic force of first elastic component, the second position is to make
Obtain the position that workpiece is in inversion state.
In one embodiment, the device for testing tensile force further includes anti-falling piece, and the anti-falling piece is set to the folder
The downside of tool falls off from the fixture when for preventing the workpiece to be in inversion state.
In one embodiment, the device for testing tensile force further includes turnover mechanism, and the turnover mechanism includes overturning
Actuator, clamping jaw and mobile actuator, the clamping jaw are connect with the overturning actuator, the mobile actuator and the overturning
Actuator connection；
Wherein, the mobile actuator is for driving the overturning actuator mobile to the bracket, so that the support
Seat is located in the opereating specification of the clamping jaw, and the overturning actuator is for driving the clamping jaw to rotate, to overturn the bracket.
In order to solve the above technical problems, another technical solution that the application uses is: providing a kind of battery pack wiring.It should
Battery pack wiring includes such as above-mentioned device for testing tensile force.
The beneficial effect of the application is: being in contrast to the prior art, this application discloses a kind of device for testing tensile force
With battery pack wiring.By the way that pressure detecting part is arranged in the top side of connecting plate, clamp assemblies are set on pressure detecting part, even
The bottom side setting constant force supporting element of fishplate bar uses lifting actuator to support connecting plate, pressure detecting part and clamp assemblies
Connecting plate lifting is adjusted, and then device for testing tensile force provided by the present application can detect the quality of workpiece weld from the lower section of workpiece
Quality, impurity drops into the risk in workpiece when having evaded detection, relatively improves the reliability of workpiece, while balancing
The case where gravity of connecting plate, pressure detecting part and clamp assemblies, also advantageously improves the precision of tensile test.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of one embodiment of device for testing tensile force provided by the present application；
Fig. 2 is the structural schematic diagram of pulp-collecting box and clamp assemblies in Fig. 1 device for testing tensile force；
Fig. 3 is the structural schematic diagram of overturning jig in Fig. 1；
Fig. 4 is the structural schematic diagram of fixture in Fig. 3；
Fig. 5 is the structural schematic diagram of the fixed workpiece of Fig. 3 fixture；
Fig. 6 is the backsight structural representation of Fig. 3 overturning jig；
Fig. 7 is the structural schematic diagram of fixture and anti-falling piece in Fig. 1 device for testing tensile force；
Fig. 8 is the structural schematic diagram of overturning jig and turnover mechanism in Fig. 3.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiment is only a part of the embodiment of the application, instead of all the embodiments.It is based on
Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall in the protection scope of this application.
Term " first ", " second ", " third " in the embodiment of the present application are used for description purposes only, and should not be understood as referring to
Show or imply relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " are defined as a result,
Two ", the feature of " third " can explicitly or implicitly include at least one of the features.In the description of the present application, " multiples' "
It is meant that at least two, such as two, three etc., unless otherwise specifically defined.In addition, term " includes " and " having "
And their any deformations, it is intended that cover and non-exclusive include.Such as contain the process of a series of steps or units, side
Method, system, product or equipment are not limited to listed step or unit, but optionally further comprising the step of not listing
Or unit, or optionally further comprising other step or units intrinsic for these process, methods, product or equipment.
Referenced herein " embodiment " is it is meant that a particular feature, structure, or characteristic described can wrap in conjunction with the embodiments
It is contained at least one embodiment of the application.Each position in the description occur the phrase might not each mean it is identical
Embodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art explicitly and
Implicitly understand, embodiment described herein can be combined with other embodiments.
Refering to fig. 1, Fig. 1 is the structural schematic diagram of one embodiment of device for testing tensile force provided by the present application.
The device for testing tensile force 100 is used to detect the weld strength of workpiece.For example, the tab in battery core is welded on nut cap
Together, the tab after welding and nut cap are generally required to tensile test is carried out, to detect the quality of welding quality.Certainly, workpiece
The article that can also be welded together with other articles, the application to this with no restriction.
Now for detecting the scene of welding performance of tab and nut cap in battery production scene, state provided herein
Device for testing tensile force 100 scheme.
Now battery shell opener direction and tab are fallen into battery case, and in tab towards being arranged downward to avoid impurity
With nut cap it is integrally welded after, using device for testing tensile force 100 detect welding quality quality.
The device for testing tensile force 100 includes clamp assemblies 10 and Test driver component 20, and clamp assemblies 10 are used for clamp cover
Cap, Test driver component 20 are used to check whether the value of thrust of tab and nut cap weld to reach test pulling force threshold value.
When the value of thrust that test obtains tab and nut cap weld reaches test pulling force threshold value, the then welding of tab and nut cap
It is high-quality.When the value of thrust that test obtains tab and nut cap weld is unable to reach test pulling force threshold value, then tab and nut cap
Welding quality is bad.
Clamp assemblies 10 include clamping jaw 11 and clamping actuator 12, and clamping jaw 11 is connect with clamping actuator 12, clamping driving
Part 12 drives clamping jaw 11 to clamp nut cap or unclamps nut cap after clamping.
Test driver component 20 includes connecting plate 21, pressure detecting part 22, constant force supporting element 23 and lifting actuator 24, pressure
Power detection piece 22 is connected to the top side of connecting plate 21, and clamping actuator 12 is set on pressure detecting part 22, constant force supporting element 23
It is connect with the bottom side of connecting plate 21, the driving end of lifting actuator 24 is set on connecting plate 21.
Wherein, constant force supporting element 23 is used to balance the gravity of connecting plate 21, pressure detecting part 22 and clamp assemblies 10, lifting
Actuator 24 is used to adjust the lifting of connecting plate 21 to provide test required pulling force, and adjusts connecting plate 21 in lifting actuator 24
During lifting, constant force supporting element 23 provides constant top lift always.It should be noted that the weight of lifting actuator 24
It does not apply in general on connecting plate 21.
I.e. constant force supporting element 23 provides constant top lift, to balance connecting plate 21, pressure detecting part 22 and clamp assemblies
10 gravity.The driving end of lifting actuator 24 is set on connecting plate 21, with the lifting for accurately adjusting connecting plate 21, into
And drive clamp assemblies 10 to apply pulling force to nut cap by connecting plate 21, to test the value of thrust of weld between nut cap and tab
Whether reach test pulling force threshold value, and detects the pulling force of weld between nut cap and tab by the variable quantity of pressure detecting part 22
Value.
Since constant force supporting element 23 balances the gravity of connecting plate 21, pressure detecting part 22 and clamp assemblies 10, avoid
Interference of the gravity of connecting plate 21, pressure detecting part 22 and clamp assemblies 10 to lift adjustment, and then going up and down actuator 24 can
The lifting of connecting plate 21 is more accurately adjusted, to avoid lifting actuator 24 lifting amount it is excessive, and damage nut cap with
The welding structure of tab.
The application provides constant top lift by setting constant force supporting element 23, and then balances connecting plate 21, pressure inspection
The gravity of part 22 and clamp assemblies 10 is surveyed, so that connecting plate 21 is easy to be conditioned, and lifting actuator 24 is set accurately to adjust
The lifting amount of connecting plate 21, and then constant force supporting element 23 and the lifting cooperation of actuator 24 improve the testing precision of pulling force.
Further, constant force supporting element 23 and lifting actuator 24 are all connected on bottom plate 27, to avoid constant force supporting element
23 influence measurement accuracy due to the defect of supporting surface with lifting actuator 24.
Optionally, clamping actuator 12 is gripper cylinder, and constant force supporting element 23 is cylinder, and lifting actuator 24 is electric cylinders.
Alternatively, lifting actuator 24 can be linear motor, cam drive mechanism.
In some embodiments, the driving end for going up and down actuator 24 is directly connect with connecting plate 21.
In further embodiments, Test driver component 20 further includes overload protection part 25, and overload protection part 25 is connected to
On connecting plate 21, lifting actuator 24 is connect by link block 26 with overload protection part 25, that is, goes up and down the driving end of actuator 24
It is connect with link block 26, and link block 26 is also connect with overload protection part 25, lifting actuator 24 is driven by overload protection part 25
Dynamic connecting plate 21 is gone up and down.
In the present embodiment, the top lift of constant force supporting element 23 is equal to clamp assemblies 10, connecting plate 21,22 and of pressure detecting part
The sum of the gravity of overload protection part 25.
Further, overload protection part 25 is low rubbing cylinder, and the value of thrust suffered by low rubbing cylinder is less than default
When value of thrust, the piston shaft of low rubbing cylinder is in contraction state；Value of thrust suffered by low rubbing cylinder is equal to or more than
When default value of thrust, the piston shaft of low rubbing cylinder is in stretching state, and can be pulled out by lifting actuator 24 to offset lifting
The excessive pulling force that actuator 24 is applied avoids the welding structure of damage tab and nut cap.
Wherein, the ratio range for presetting the test pulling force threshold value of value of thrust and workpiece is 1 to 2.Default value of thrust can be
The test 1.0,1.3,1.6 or 2 times of pulling force threshold value of workpiece, the application to this with no restriction.
It is low to rub when lifting actuator 24 is less than the default value of thrust of low rubbing cylinder to the pulling force that low rubbing cylinder applies
The piston rod for wiping cylinder is in contraction state, i.e. the piston rod of low rubbing cylinder will not move.When lifting actuator 24 rubs to low
When the pulling force that wiping cylinder applies is equal to or more than the default value of thrust of low rubbing cylinder, the piston rod of low rubbing cylinder, which is in, to be stretched out
The piston rod of state, low rubbing cylinder can be drawn out, and to offset the excessive pulling force that lifting actuator 24 is applied, avoid damaging
The welding structure of tab and nut cap.
For example, the movement that lifting actuator 24 is controlled to stop can lag due to the response time difference of system, actuator is gone up and down
24 driving end can be applied more than the pulling force of test pulling force threshold value, thus may damage the welding structure of tab and nut cap.
The value of thrust of weld between nut cap and tab, pressure detecting part 22 are detected by the variable quantity of pressure detecting part 22
Variable quantity when reaching test pulling force threshold value, mediate lifting actuator 24, due to the response time difference of system, going up and down actuator 24 can
It can will continue to drive connection plate 21 to move down, so that value of thrust suffered by low rubbing cylinder is equal to or more than default value of thrust,
The piston rod of low rubbing cylinder is stretching state by contraction state variation at this time, to offset the mistake that lifting actuator 24 may apply
Big pulling force protects the welding structure of nut cap and tab not to be damaged.
Certainly, overload protection part 25 can also be common cylinder, have can offset lifting actuator 24 apply it is excessive
Pulling force effect avoids defective work piece in the ability on connecting plate 21.
Further, as shown in Fig. 2, device for testing tensile force 100 further includes pulp-collecting box 28, pulp-collecting box 28 is set to workpiece
Downside, for receiving discarded workpiece.That is when the value of thrust of tab and nut cap weld is unable to reach test pulling force threshold value, tab
Can be separated from welding during tensile test with nut cap, so pulp-collecting box 28 for recycle the nut cap separated with tab or with
The tab of battery case separation, nut cap.
Clamping jaw 11 includes spaced first clamping member 110 and the second clamping piece 112, and first clamping member 110 has the
One escape groove, the second clamping piece 112 have the second escape groove, and first clamping member 110 and the second clamping piece 112 drive with clamping
Part 12 connects, and clamping actuator 12 is for driving 112 clamping workpiece of first clamping member 110 and the second clamping piece.
The edge of first clamping member 110 and the cooperation clamping nut cap of the second clamping piece 112, the first escape groove and the second escape groove
For avoiding tab and nut cap boss with nut cap welding, to avoid clamping damage tab and nut cap boss.
The course of work of above each component approximately as: the tab after welding is moved to the upper of clamp assemblies 10 with nut cap
Side, lifting actuator 24 drives connecting plate 21 to move up, so that tab and nut cap are in 11 clamping range of clamping jaw, clamping is driven
Moving part 12 drives clamping jaw 11 to clamp the edge of nut cap, goes up and down actuator 24 and connecting plate 21 is driven to move down, tab is straightened
And applying downward pulling force to nut cap, the variable quantity of the detected pressure of pressure detecting part 22 reflects the size of the value of thrust；Pressure
When the variable quantity of power detection piece 22 reaches test pulling force threshold value, illustrate that nut cap and tab welding quality are good, goes up and down actuator 24
Stopping moves down, and overload protection part 25, which is used to offset, goes up and down the excessive pulling force that actuator 24 may continue to move down and generate.If lifting
After the distance that actuator 24 drives connecting plate 21 to move down setting, the variable quantity of pressure detecting part 22 is still unable to reach test and draws
Force threshold illustrates nut cap and tab welding quality dissatisfaction, and in the process, the variable quantity of pressure detecting part 22 is not up to always
When testing pulling force threshold value, illustrate that nut cap has been separated from welding with tab, the variable quantity of pressure detecting part 22 also can not later
Test pulling force threshold value can be reached.
Further, refering to Fig. 2, Fig. 3, device for testing tensile force 100 further includes overturning jig 30, and overturning jig 30 is for adjusting
Orientation locating for whole workpiece, can be by battery shell opener direction by being flipped up to be downward, and then is convenient for mutually welding on battery case
The welding quality of the tab and nut cap that connect is detected, and impurity drops into the wind in battery shell opener when can evade detection
Danger, can relatively promote the reliability of battery.
Refering to Fig. 3 to Fig. 8, which includes fixture 31 and overturning component 32, and fixture 31 can opposite overturning component
32 swing, and fixture 31 be in first orientation or second orientation to overturning component 32 without outer power drive phase, first orientation with
Second orientation is mutually inverted orientation each other.
Wherein, fixture 31 includes bracket 310 and supporting plate 312, and the two sides of bracket 310 are respectively connected with supporting plate 312, bracket 310
It is provided with magnet 313 with accommodation groove 311 and away from the side of accommodation groove 311, supporting plate 312 has escape groove 314.
Accommodation groove 311 with hypanthium lateral wall for matching, and hypanthium is adsorbed in accommodation groove 311 by magnet 313, escape groove
314 for avoiding the battery case in hypanthium and matching with the lateral wall of battery case, and the depth of accommodation groove 311 is greater than escape groove
314 depth, the side of hypanthium can also backstop on supporting plate 312, to prevent hypanthium from gliding.
Overturning component 32 includes fixing seat 33, shaft 34, balance 35 and the first elastic component 36, one end of shaft 34 and bracket
310 connections, the other end of shaft 34 are connect with balance 35, and shaft 34 and fixing seat 33 are rotatablely connected, and the first elastic component 36 is set
It is placed between balance 35 and fixing seat 33.
Wherein, balance 35 can be driven in 33 limited range of fixing seat and swing, and by the when without outer power drive
The elastic force of one elastic component 36 is resisted against first position or the second position in fixing seat 33, and accordingly, fixture 31 is in first party
Position or second orientation, and then changeable battery shell opener direction and tab direction.Wherein, the second position is so that workpiece is in
Set the position of state.
It should be noted that balance 35 is resisted against by the elastic force that the first elastic component 36 is applied when without outer power drive
On a position in first position and the second position in fixing seat 33, without freely swinging, i.e., removed in external motivating force
Except when, orientation locating for fixture 31 can be maintained, without applying the orientation of external force holding jig 31 always.
As shown in fig. 7, device for testing tensile force 100 further includes anti-falling piece 38, anti-falling piece 38 is set to the downside of fixture 31, uses
It falls off from fixture 31 when preventing workpiece to be in inversion state.I.e. when battery case is in inversion state, anti-falling piece 38 can be from
The lower section support battery case of battery case, avoids the pulling force downward when carrying out tensile test that battery case is detached from from hypanthium,
It is relatively detached from from fixture 31, and drops damage, anti-falling piece 38 can play the role of that battery case is prevented to be detached from damage.
As shown in Fig. 3, Fig. 6, it is provided with the first connector 330 in fixing seat 33, is provided with the second connector on balance 35
350, the both ends of the first elastic component 36 are separately connected the first connector 330 and the second connector 350.
In some embodiments, tool is resisted against fixing seat 33 there are two protrusion to limit balance 35 respectively in fixing seat 33
On first position and the second position, balance 35 swings between the orientation defined by two protrusions.
Balance 35 is symmetrical cam structure, and balance 35 includes arc sections 354 and the convex peak portion 352 of integral structure, convex peak
Portion 352 is for being resisted against protrusion.Second connector 350 is rod piece, is connected to convex peak portion 352.First connector 330 is bar
Part, and the first connector 330 is located at raised opposite two sides with the second connector 350, to realize when without outer power drive
Convex peak portion 352 can be resisted against first position or the second position in fixing seat 33 by the elastic force of the first elastic component 36.First bullet
Property part 36 be, for example, tension spring, and then using the elastic pulling force of tension spring balance 35 is resisted against in protrusion.
In further embodiments, the first locating part 312 and the second locating part 314, balance 35 are connected in fixing seat 33
It is swung in 314 limited range of the first locating part 312 and the second locating part.
Wherein, when balance 35 is resisted against the first locating part 312, fixture 31 is located at first orientation；Balance 35 is resisted against second
When locating part 314, fixture 31 is located at second orientation；First orientation is different from second orientation.Optionally, first orientation and second party
Position inverted orientation each other.
First locating part 312 is identical as 314 structure of the second locating part, all has an inclined-plane, which is used for and convex peak portion
The abutment face of 352 contacts.
First locating part 312 has the first adjustment hole 313, and the second locating part 314 has the second adjustment hole 315, the first limit
Position part 312 is connect by the first adjustment hole 313 with fixing seat 33, and the second locating part 314 passes through the second adjustment hole 315 and fixing seat
33 connections.
Optionally, the first adjustment hole 313 and the second adjustment hole 315 are strip type hole, and then changeable first locating part
312, link position of second locating part 314 in fixing seat 33, to adjust the hunting range of balance 35.First adjustment hole 313
It can also be arcuate socket with the second adjustment hole 315.
Further, refering to Fig. 8, device for testing tensile force 100 further includes turnover mechanism 40, and turnover mechanism 40 is used for overturning
Jig 30 applies active force, so that fixture 31 changes between first orientation and second orientation.
Turnover mechanism 40 includes overturning actuator 41, clamping jaw 42 and mobile actuator 43, clamping jaw 42 and overturning actuator 41
Connection, mobile actuator 43 are connect with overturning actuator 41；
Wherein, mobile actuator 43 is mobile to fixture 31 for driving overturning actuator 41, so that fixture 31 is located at folder
In the opereating specification of pawl 42, overturning actuator 41 is for driving clamping jaw 42 to rotate, and with turnover fixture 31, i.e., applies to fixture 31 and makees
Firmly, so that fixture 31 changes between first orientation and second orientation.
Overturning actuator 41 can be rotary cylinder, servo motor or stepper motor；It overturns actuator 41 and passes through guiding group
Part is slideably positioned on support, which is, for example, line rail sliding block mechanism；Mobile actuator 43 for example, cylinder, electric cylinders,
The piston rod for then moving actuator 43 is connect with overturning actuator 41, and driving overturning actuator 41 is close to fixture 31, i.e. clamping jaw
42 close to fixture 31, when fixture 31 be located at clamping jaw 42 can be in opereating specification when, overturning actuator 41 can drive clamping jaw 42 to rotate
180 °, to drive fixture 31 to be overturn by first orientation to second orientation or overturn first orientation by second orientation.
And then overturning jig 30 and turnover mechanism 40 cooperate so that battery shell opener direction is by being flipped up to be downward, in turn
Cooperate convenient for clamp assemblies 10 with Test driver component 20 and the welding quality of the tab and nut cap mutually welded on battery case is carried out
Detection.
Further, the application also provides a kind of battery pack wiring, which includes above-mentioned device for testing tensile force
100.Battery pack wiring by battery shell opener towards by being flipped up to be downward, and in battery case tab and nut cap weld,
And the welding quality of tab and nut cap is detected after welding, so that working procedures collection together in one, is conducive to improve the battery pack
The degree of automation of wiring.
It is in contrast to the prior art, this application discloses a kind of device for testing tensile force and battery pack wiring.By
Pressure detecting part is arranged in the top side of connecting plate, and clamp assemblies are arranged on pressure detecting part, and constant force is arranged in the bottom side of connecting plate
Supporting element adjusts connecting plate lifting using lifting actuator to support connecting plate, pressure detecting part and clamp assemblies, in turn
Device for testing tensile force provided by the present application can detect the quality of workpiece weld from the lower section of workpiece, evade miscellaneous when detection
Matter drops into the risk in workpiece, relatively improves the reliability of workpiece, at the same balance connecting plate, pressure detecting part and
The case where gravity of clamp assemblies, also advantageously improves the precision of tensile test.
Above is only an example of the present application, it is not intended to limit the scope of the patents of the application, it is all to utilize this Shen
Please equivalent structure or equivalent flow shift made by specification and accompanying drawing content, be applied directly or indirectly in other relevant skills
Art field similarly includes in the scope of patent protection of the application.
Claims (10)
1. a kind of device for testing tensile force, which is characterized in that the device for testing tensile force includes:
Clamp assemblies, including clamping jaw and clamping actuator, the clamping jaw are connect with the clamping actuator；
Test driver component, including connecting plate, pressure detecting part, constant force supporting element and lifting actuator, the pressure detecting part
Be connected to the top side of the connecting plate, the clamping actuator is set on the pressure detecting part, the constant force supporting element with
The bottom side of the connecting plate connects, and the driving end of the lifting actuator is set on the connecting plate；
Wherein, the constant force supporting element is used to balance the gravity of the connecting plate, the pressure detecting part and the clamp assemblies,
The lifting actuator is used to adjust the connecting plate lifting to provide test required pulling force.
2. device for testing tensile force according to claim 1, which is characterized in that the Test driver component further includes that overload is protected
Guard, the overload protection part are connected on the connecting plate, and the lifting actuator passes through link block and the overload protection
Part connection.
3. device for testing tensile force according to claim 2, which is characterized in that the top lift of the constant force supporting element is equal to institute
State the sum of clamp assemblies, the connecting plate, the pressure detecting part and gravity of the overload protection part.
4. device for testing tensile force according to claim 3, which is characterized in that the overload protection part is low rubbing cylinder,
When the value of thrust suffered by the low rubbing cylinder is less than default value of thrust, the piston shaft of the low rubbing cylinder, which is in, to be shunk
State；When the value of thrust suffered by the low rubbing cylinder is equal to or more than default value of thrust, the work of the low rubbing cylinder
Plug axis is in stretching state, and can be pulled out by the lifting actuator；
Wherein, the ratio range of the test pulling force threshold value of the default value of thrust and the workpiece is 1 to 2.
5. device for testing tensile force according to claim 1, which is characterized in that the clamping jaw includes spaced first folder
Gripping member and the second clamping piece, described first clamping member have the first escape groove, and second clamping piece has the second escape groove, institute
It states first clamping member and second clamping piece to connect with the clamping actuator, the clamping actuator is described for driving
First clamping member and the second clamping piece clamping workpiece.
6. device for testing tensile force according to claim 1, which is characterized in that the device for testing tensile force further includes splicing
Box, the pulp-collecting box are set to the downside of the workpiece, for receiving the discarded workpiece.
7. device for testing tensile force according to claim 1, which is characterized in that the device for testing tensile force further includes that overturning is controlled
Tool, the overturning jig include:
Fixture, including bracket and supporting plate, the two sides of the bracket are respectively connected with the supporting plate, and the bracket has accommodation groove and back
Side from the accommodation groove is provided with magnet, and the supporting plate has escape groove；
Component is overturn, including fixing seat, shaft, balance and the first elastic component, one end of the shaft are connect with the bracket, institute
The other end for stating shaft is connect with the balance, and the shaft and the fixing seat are rotatablely connected, and first elastic component is set
It is placed between the balance and the fixing seat；
Wherein, the balance can be driven in the fixing seat limited range and swing, and by institute when without outer power drive
The elastic force for stating the first elastic component is resisted against first position or the second position in the fixing seat, and the second position is so that work
Part is in the position of inversion state.
8. device for testing tensile force according to claim 7, which is characterized in that the device for testing tensile force further includes anticreep
Part, the anti-falling piece are set to the downside of the fixture, from the fixture when for preventing the workpiece to be in inversion state
It falls off.
9. device for testing tensile force according to claim 7, which is characterized in that the device for testing tensile force further includes tipper
Structure, the turnover mechanism include that overturning actuator, clamping jaw and mobile actuator, the clamping jaw are connect with the overturning actuator,
The mobile actuator is connect with the overturning actuator；
Wherein, the mobile actuator is for driving the overturning actuator mobile to the fixture, so that the fixture position
In in the opereating specification of the clamping jaw, the overturning actuator is for driving the clamping jaw to rotate, to overturn the fixture.
10. a kind of battery pack wiring, which is characterized in that the battery pack wiring includes as described in any one of claim 1 to 9
Device for testing tensile force.
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| CN201910533291.3A CN110208092B (en) | 2019-06-19 | 2019-06-19 | Tensile force testing device and battery assembly line |
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| CN201910533291.3A CN110208092B (en) | 2019-06-19 | 2019-06-19 | Tensile force testing device and battery assembly line |
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| CN110208092B (en) | 2024-06-04 |
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