CN208125522U - Tensile test structure - Google Patents
Tensile test structure Download PDFInfo
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- CN208125522U CN208125522U CN201820356246.6U CN201820356246U CN208125522U CN 208125522 U CN208125522 U CN 208125522U CN 201820356246 U CN201820356246 U CN 201820356246U CN 208125522 U CN208125522 U CN 208125522U
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Abstract
Tensile test structure provided by the utility model, is related to battery detecting technical field.The tensile test structure includes actuator, moving assembly, pulling force detector and stationary fixture.Actuator is connect with moving assembly, and part to be detected is mounted on stationary fixture and connect with moving assembly.Moving assembly moves under the action of actuator, treats detection piece and applies pulling force.Pulling force detector is mounted on moving assembly, the pulling force born for detecting part to be detected, and whether the connection to judge part to be detected is reliable.The tensile test structure operation is convenient, and measuring accuracy is high, helps to promote product qualification rate, improves product quality and competitiveness.
Description
Technical field
The utility model relates to battery detecting technical fields, in particular to a kind of tensile test structure.
Background technique
Currently, lithium battery performance-critical parameter, if internal resistance is big, the abnormal phenomenon such as charge and discharge are too fast, and welding effect
It is related.In the production process of battery, after battery core and pole plate welding, if without correctly testing and detecting, soldered electricity
Core is qualified or not, if the electrical property for influencing later period battery will have no way of investigating.Also, the inspection without welding quality, it is difficult to
Meet the requirement of product qualification rate.
Utility model content
In view of this, the purpose of this utility model includes providing a kind of tensile test structure, part to be detected is mounted on fixation
It is connect on fixture and with moving assembly.Moving assembly moves under the action of actuator, treats detection piece and applies pulling force.It draws
Force detector is mounted on moving assembly, the pulling force born for detecting part to be detected, with judge part to be detected connection whether
Reliably.The tensile test structure can ensure no rosin joint, without solder skip, firm welding, reliable, guarantee electrical property performance, raising production
The qualification rate and competitive advantage of product.
The purpose of this utility model further includes providing another tensile test structure, and moving assembly includes guide rod, first
Driving member and the second driving member, guide rod are mounted between stationary fixture and actuator, are play the guiding role.First driving member is driving
It drives the second driving member mobile under the action of moving part, applies pulling force to part to be detected.Pulling force detector is mounted on the second driving member
On, for detecting the pulling force of part receiving to be detected.The tensile test structure operation is convenient, and measuring accuracy is high, helps to promote production
Product qualification rate improves product quality and competitiveness.
It is that it is realized by adopting the following technical scheme that the utility model, which improves its technical problem,.
A kind of tensile test structure provided by the utility model, the tensile test structure include actuator, moving assembly,
Pulling force detector and stationary fixture.
The actuator is connect with the moving assembly, part to be detected be mounted on the stationary fixture and with it is described
Moving assembly connection.The moving assembly moves under the action of the driving member, applies pulling force to the part to be detected.It is described
Pulling force detector is mounted on the moving assembly, the pulling force born for detecting the part to be detected, described to be checked to judge
Whether the connection for surveying part is reliable.
Further, the tensile test structure further includes pedestal, the actuator, the moving assembly and the fixation
Fixture is respectively mounted on the base.
Further, the moving assembly includes lead screw and sliding block, and the slide block set is set to the lead screw, and the sliding block is opened
Equipped with threaded hole, the threaded hole and the lead screw are adapted；The sliding block is connect with the part to be detected.
Further, the moving assembly further includes claw, is equipped with connector on the sliding block, and the one of the connector
End is fixedly connected with a slide block, and the other end of the connector is fixedly connected with the claw；The pulling force detector is mounted on institute
It states on connector, the claw is connect with the part to be detected.
Further, the claw is equipped with clamping portion, and the clamping portion is fixedly connected with the part to be detected.
Further, the claw is equipped with multiple lugs, and multiple lugs are uniform along the circumferencial direction of the claw
It is distributed, offers jack on each lug, pass through the jack using inserted sheet and be fixedly connected with the part to be detected.
Further, the moving assembly further includes guide rod, and the sliding block is mounted on the guide rod.
Further, the stationary fixture includes the first clamping part and the second clamping part, first clamping part and described
Second clamping part is detachably connected, and the part to be detected is mounted between first clamping part and second clamping part.
Further, the first arc groove is offered on first clamping part, and is offered on second clamping part
Two arc grooves, the notch of first arc groove is opposite with the notch of second arc groove and can mutually cover conjunction, institute
Part to be detected is stated to be mounted between first arc groove and second arc groove.
Another kind tensile test structure provided by the utility model, the pulling force born for testing part to be detected, the drawing
It includes actuator, moving assembly, pulling force detector and stationary fixture that power, which tests structure,.
The actuator is connect with the moving assembly, and the part to be detected is mounted on the stationary fixture, and with
The moving assembly connection.The moving assembly includes guide rod, the first driving member and the second driving member, first driving member
Connect with second driving member, first driving member is connect with the actuator, second driving member with it is described to be checked
Part connection is surveyed, the guide rod is mounted between the stationary fixture and the actuator.
First driving member drives second driving member mobile under the action of the driving member, to described to be detected
Part applies pulling force；The pulling force detector is mounted on second driving member, the drawing born for detecting the part to be detected
Power.
Tensile test structure provided by the utility model has the beneficial effect of the following aspects：
A kind of tensile test structure provided by the utility model, part to be detected be mounted on stationary fixture and with movement
Component connection.Moving assembly moves under the action of actuator, treats detection piece and applies pulling force.Pulling force detector is mounted on movement
On component, for detecting the pulling force of part receiving to be detected, whether the connection to judge part to be detected is reliable.The tensile test structure
It can ensure no rosin joint, without solder skip, it is firm welding, reliable, guarantee that electrical property plays, improves the qualification rate of product and compete excellent
Gesture.
Another kind tensile test structure provided by the utility model, moving assembly include guide rod, the first driving member and the
Two driving members, guide rod are mounted between stationary fixture and actuator, are play the guiding role.Effect of first driving member in actuator
The second driving member of lower drive is mobile, applies pulling force to part to be detected.Pulling force detector is mounted on the second driving member, for detecting
The pulling force that part to be detected is born.The tensile test structure operation is convenient, and measuring accuracy is high, helps to promote product qualification rate, mention
High product quality and competitiveness.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is a kind of structural schematic diagram at the visual angle for the tensile test structure that the utility model specific embodiment provides；
Fig. 2 is the structural schematic diagram at another visual angle for the tensile test structure that the utility model specific embodiment provides；
Fig. 3 is that the claw for the tensile test structure that the utility model specific embodiment provides and the connection structure of pole plate are illustrated
Figure；
Fig. 4 is the mounting structure schematic diagram of the inserted sheet for the tensile test structure that the utility model specific embodiment provides.
Icon：100- tensile test structure；110- pedestal；111- substrate；120- actuator；130- moving assembly；131-
Lead screw；133- sliding block；135- guide rod；137- connector；139- pulling force detector；140- claw；141- lug；143- is inserted
Hole；145- pole plate；147- location hole；149- inserted sheet；The hand-held part 1491-；The insertion section 1493-；150- stationary fixture；151- first
Clamping part；The second clamping part of 153-；160- battery core.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Usually here in attached drawing description and
The component of the utility model embodiment shown can be arranged and be designed with a variety of different configurations.
Therefore, requirement is not intended to limit to the detailed description of the embodiments of the present invention provided in the accompanying drawings below
The scope of the utility model of protection, but it is merely representative of the selected embodiment of the utility model.Based in the utility model
Embodiment, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.
In the description of the present invention, it should be understood that the orientation or positional relationship of the instructions such as term " on ", "lower"
For be based on the orientation or positional relationship shown in the drawings or the utility model product using when the orientation or position usually put
The orientation or positional relationship that relationship or those skilled in the art usually understand is merely for convenience of description the utility model
It is described with simplifying, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, with specific orientation structure
It makes and operates, therefore should not be understood as limiting the present invention.
" first " of the utility model, " second " etc., are only used to distinguish between description, and contain not special
Justice.
In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set
Set ", " installation " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
It, can also be indirectly connected through an intermediary to be to be connected directly.It for the ordinary skill in the art, can be specific
Situation understands the concrete meaning of above-mentioned term in the present invention.
Fig. 1 is a kind of structural schematic diagram at the visual angle for the tensile test structure 100 that the utility model specific embodiment provides,
Fig. 2 is the structural schematic diagram at another visual angle for the tensile test structure 100 that the utility model specific embodiment provides, and is please referred to
Fig. 1 and Fig. 2.
Battery in the fabrication process, can weld pole plate 145, the welding of battery core 160 and pole plate 145 at the both ends of battery core 160
Whether quality is reliable, will have a direct impact on the quality of product and the electrical property of battery.In order to guarantee the quality product rate of battery, examine
Whether reliable look into welding quality, it to be a very necessary production link that whether there is or not rosin joints, solder skip.
Therefore, a kind of tensile test structure 100 provided in this embodiment, the pulling force born for detecting part to be detected.It needs
It is noted that part to be detected is the battery core 160 that both ends are welded with pole plate 145, the tensile test structure 100 in the present embodiment
Whether secured for detecting battery core 160 and the welding of pole plate 145, whether there is or not rosin joint, solder skips etc..Certainly, it is not limited to that, the pulling force
Welding quality test of the structure 100 in addition to being applied to battery is tested, may be also used in other products test.
Tensile test structure 100 provided in this embodiment, including pedestal 110, actuator 120, moving assembly 130, pulling force
Detector 139 and stationary fixture 150.Actuator 120, moving assembly 130 and stationary fixture 150 are installed on pedestal 110.
Actuator 120 is connect with moving assembly 130, and part to be detected is mounted on stationary fixture 150 and and moving assembly
130 connections.Moving assembly 130 moves under the action of actuator 120, treats detection piece and applies pulling force.Pulling force detector 139 is pacified
On moving assembly 130, for detecting the pulling force of part receiving to be detected, whether the connection to judge part to be detected is reliable.
Fig. 3 is the claw 140 for the tensile test structure 100 that the utility model specific embodiment provides and the company of pole plate 145
Structural schematic diagram is connect, referring to figure 3..
Moving assembly 130 includes lead screw 131, sliding block 133, claw 140 and guide rod 135.Sliding block 133 is sheathed on lead screw
131, sliding block 133 offers threaded hole, and threaded hole and lead screw 131 are adapted.Sliding block 133 is connect with part to be detected.
Optionally, connector 137 is installed, one end of connector 137 is fixedly connected with sliding block 133, connection on sliding block 133
The other end of part 137 is fixedly connected with claw 140.Pulling force detector 139 is mounted on connector 137, claw 140 with it is to be detected
Part connection.Connector 137 is in convex shape, installs pressure gauge thereon, observes the reading shown on pressure gauge convenient for operator.
It should be noted that connector 137 seperated can both have been connected with sliding block 133 or connector 137 and claw 140,
It can be integrally formed, be not especially limited here.
Fig. 4 is the mounting structure signal of the inserted sheet 149 for the tensile test structure 100 that the utility model specific embodiment provides
Figure, referring to figure 3. and Fig. 4.
Specifically, claw 140 is equipped with multiple lugs 141, and multiple lugs 141 uniformly divide along the circumferencial direction of claw 140
Cloth offers jack 143 on each lug 141, passes through jack 143 using inserted sheet 149 and is fixedly connected with part to be detected.
In the present embodiment, the quantity of lug 141 is three, and three lugs 141 are in 120 degree of angles, are evenly distributed on
On claw 140, when test, since pole plate 145 and battery core 160 weld, itself there are multiple location holes 147, preferably on pole plate 145
For six location holes 147.After inserted sheet 149 is inserted into jack 143, continues into the location hole 147 on pole plate 145, make pole plate
145 are fixedly connected with claw 140.Preferably, inserted sheet 149 includes hand-held part 1491 and insertion section 1493, L-shaped, hand-held part
1491 mount and dismount convenient for operator, and the end of insertion section 1493 is wedge shaped, i.e., end is thinner, convenient for quickly inserting
Enter in jack 143 and location hole 147.
Inserted sheet 149 after the installation is completed, if pulling claw 140, moves claw 140 along the direction far from stationary fixture 150,
Pole plate 145 and battery core 160 are torn similar to separate type, with the reliability for examining pole plate 145 and battery core 160 to weld.Pull force calculation
Device 139 uses pressure gauge, can directly, accurately show the pulling force between pole plate 145 and battery core 160.If pressure gauge is aobvious
The pulling force shown reaches preset value, does not damage between pole plate 145 and battery core 160, then the welding quality is qualified.If pressure gauge
The pulling force of display is also not up to preset value, and damage is had already appeared between pole plate 145 and battery core 160, then the welding quality is unqualified,
It needs to re-work.
Preferably, one end of guide rod 135 is fixed on stationary fixture 150, and the other end of guide rod 135 is fixed on substrate
On 111, substrate 111 is for installing actuator 120.It is opened up on sliding block 133 there are two pilot hole, two pilot holes are respectively arranged on spiral shell
The two sides of pit are respectively sleeved on two guide rods 135 disposed in parallel, and the axis of guide rod 135 is straight line, sliding block 133
It can be along the axial movement of guide rod 135, close to or far from stationary fixture 150.Actuator 120 uses driving motor or cylinder
Deng.
Certainly, it is not limited to that, the quantity of lug 141 may be two, four, five, six etc., claw 140
On in addition to using lug 141, be fixedly connected using inserting mode with pole plate 145, can also using other fixed forms, for example,
Claw 140 is equipped with clamping portion, and clamping portion and pole plate 145 are clamped.
Stationary fixture 150 includes the first clamping part 151 and the second clamping part 153, the first clamping part 151 and the second clamping part
153 is detachably connected, and the first clamping part 151 is mounted on pedestal 110, and the second clamping part 153 is mounted on the first clamping part 151
One end far from pedestal 110, battery core 160 are mounted between the first clamping part 151 and the second clamping part 153.
The first arc groove is offered on first clamping part 151, offers the second arc groove on the second clamping part 153,
The notch of first arc groove is opposite with the notch of the second arc groove and can mutually cover conjunction, and part to be detected is mounted on the first arc
Between connected in star and the second arc groove.Since battery core 160 is cylindrical, the first arc groove is semicircle, and the second arc is recessed
After slot is also semicircle, and the first arc groove and the second arc groove lid close, the outer of cylindrical battery core 160 can just be attached to
Surface.First clamping part 151 and the second clamping part 153 are connected by screw bolts, so that the first arc groove and the second arc groove
Battery core 160 is clamped, prevents battery core 160 from shaking during the test.
Certainly, it being not limited to that, the first clamping part 151 and the second clamping part 153 can also be connected by screw bolts with one end,
The other end enables the second clamping part 153 to rotate around the first clamping part 151, when assembling and disassembling battery core 160, is not finished using hingedly
Fully separating first clamping part 151 and the second clamping part 153, assembly and disassembly are more convenient, more efficient.
Another kind tensile test structure 100 provided in this embodiment, the pulling force born for testing part to be detected, pulling force are surveyed
Trying structure 100 includes actuator 120, moving assembly 130, pulling force detector 139 and stationary fixture 150.
Actuator 120 is connect with moving assembly 130, and part to be detected is mounted on stationary fixture 150, and and moving assembly
130 connections.Moving assembly 130 includes guide rod 135, the first driving member and the second driving member, and the first driving member and second are driven
Part connection, the first driving member are connect with actuator 120, and the second driving member is connect with part to be detected, and guide rod 135 is mounted on fixation
Between fixture 150 and actuator 120.
First driving member drives the second driving member mobile under the action of actuator 120, applies pulling force to part to be detected.It draws
Force detector 139 is mounted on the second driving member, the pulling force born for detecting part to be detected.
Preferably, the first driving member and the second driving member use lead screw 131 and sliding block 133, and actuator 120 uses cylinder,
Cylinder is connect with sliding block 133, Telescopic-cylinder, and band movable slider 133 is moved along guide rod 135, meanwhile, lead screw 131 rotates, so that sliding
Block 133 is steadily mobile.When installing pole plate 145 and claw 140, sliding block 133 is moved along the direction close to stationary fixture 150.Installation
After carry out tensile test, sliding block 133 is moved along the direction far from stationary fixture 150, tears pole plate 145.
If actuator 120 uses stepper motor, motor is connect with lead screw 131, and motor rotates forward, and makes sliding block 133 along close
The direction of stationary fixture 150 is mobile.Motor reversal moves sliding block 133 along the direction far from stationary fixture 150.
Certainly, be not limited to that, the first driving member and the second driving member can also using gear drive, belt wheel transmission,
The modes such as sprocket wheel transmission, to drive claw 140 to be located remotely from each other with pole plate 145 or close, with Detection electrode 145 and battery core 160 it
Between welding quality.
Tensile test structure 100 provided by the utility model, installation process and working principle are as follows：
Stepper motor, substrate 111 and the first clamping part 151 are mounted on pedestal 110 by bolt, and substrate 111 is used for
Stepper motor is installed, one end of lead screw 131 connect with the first clamping part 151, and the other end is defeated across substrate 111 and stepper motor
Axis connection out, sliding block 133 are respectively sleeved at lead screw 131, on guide rod 135, the top of sliding block 133 and one end of connector 137
It is fixedly connected, the other end of connector 137 is connect with claw 140, and claw 140 passes through the pole plate on inserted sheet 149 and battery core 160
145 connect, and install pressure gauge on connector 137.First clamping part 151 and the second clamping part 153 are for clamping battery core 160.Silk
Bearing is installed on thick stick 131, is conducive to the smooth rotation of lead screw 131, and reduce the frictional resistance in rotation process, reduces mill
Damage, extends the service life of each component.
When pole plate 145 is fixedly connected with claw 140, motor is rotated forward, and makes sliding block 133 along the direction close to stationary fixture 150
It is mobile, it is using inserted sheet 149 that claw 140 and substrate 111 is fixed.Tensile test is carried out after the installation is completed, and motor reversal makes sliding block
133 move along the direction far from stationary fixture 150, tear pole plate 145, while checking the reading on pressure gauge, judge pole plate 145
It is whether reliable with the welding quality of battery core 160.Since pole plate 145 has been welded at the both ends of battery core 160, to the one of battery core 160
After the detection of end, also battery core 160 should be rotated 180 degree, using above-mentioned same mode, detect the other end of battery core 160 with
The welding quality of pole plate 145.
The tensile test structure 100 obtains battery core 160 and the value of thrust that pole plate 145 welds by the display of pressure gauge, and
And it is minimum to the destructiveness in product, it can satisfy all technical requirements of cylindrical battery welding, structure is simple, and it is easy-to-use,
Save the cost.In battery manufacturing process, by the pulling force between test battery core 160 and pole plate 145, production equipment out can be fed back
Operation conditions, equipment is debugged in time, in order to promote product excellent rate, improves product quality and competitiveness.
In conclusion tensile test structure 100 provided by the utility model has the beneficial effect of the following aspects：
Tensile test structure 100 provided by the utility model can not judge welding effect after effective solution welding
Difficult problem.Using the fit system of lead screw 131 and sliding block 133, the pulling force of application is steady, easy to operate.First, cell performance
Energy aspect, can effectively control the internal resistance of battery, it is ensured that the consistency of battery performance.Second, in process aspect, every shift initial workpiece
It can verify in time whether welding energy meets the requirements, avoid rosin joint.Third, in terms of battery cost, the tensile test structure 100
Smaller to battery core 160, the destructiveness of pole plate 145, battery core 160 after test checks the damaged condition of pole plate 145, for can repair
Multiple battery core 160 is welded again, be can avoid battery caused by a large amount of rosin joint in this way and is scrapped.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, for this
For the technical staff in field, the utility model can have various changes, combination and variation.It is all the utility model spirit and
Within principle, any modification, equivalent replacement, improvement and so on be should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of tensile test structure, which is characterized in that the tensile test structure includes actuator, moving assembly, pulling force inspection
Survey device and stationary fixture；
The actuator is connect with the moving assembly, part to be detected be mounted on the stationary fixture and with the movement
Component connection；The moving assembly moves under the action of the driving member, applies pulling force to the part to be detected；The pulling force
Detector is mounted on the moving assembly, the pulling force born for detecting the part to be detected, to judge the part to be detected
Connection it is whether reliable.
2. tensile test structure according to claim 1, which is characterized in that the tensile test structure further includes pedestal,
The actuator, the moving assembly and the stationary fixture are respectively mounted on the base.
3. tensile test structure according to claim 1, which is characterized in that the moving assembly includes lead screw and sliding block,
The slide block set is set to the lead screw, and the sliding block offers threaded hole, and the threaded hole and the lead screw are adapted；The cunning
Block is connect with the part to be detected.
4. tensile test structure according to claim 3, which is characterized in that the moving assembly further includes claw, described
Connector is installed, one end of the connector is fixedly connected with a slide block, the other end of the connector and the card on sliding block
Pawl is fixedly connected；The pulling force detector is mounted on the connector, and the claw is connect with the part to be detected.
5. tensile test structure according to claim 4, which is characterized in that the claw is equipped with clamping portion, the card
Socket part is fixedly connected with the part to be detected.
6. tensile test structure according to claim 4, which is characterized in that the claw is equipped with multiple lugs, multiple
The lug is uniformly distributed along the circumferencial direction of the claw, offers jack on each lug, passes through institute using inserted sheet
It states jack and is fixedly connected with the part to be detected.
7. tensile test structure according to claim 3, which is characterized in that the moving assembly further includes guide rod, institute
Sliding block is stated to be mounted on the guide rod.
8. tensile test structure according to claim 1, which is characterized in that the stationary fixture include the first clamping part and
Second clamping part, first clamping part and second clamping part are detachably connected, and the part to be detected is mounted on described
Between first clamping part and second clamping part.
9. tensile test structure according to claim 8, which is characterized in that offer the first arc on first clamping part
Connected in star offers the second arc groove, the notch of first arc groove and second arc on second clamping part
The notch of connected in star is opposite and can mutually cover conjunction, and the part to be detected is mounted on first arc groove and second arc
Between connected in star.
10. a kind of tensile test structure, which is characterized in that the pulling force born for testing part to be detected, the tensile test knot
Structure includes actuator, moving assembly, pulling force detector and stationary fixture；
The actuator is connect with the moving assembly, and the part to be detected is mounted on the stationary fixture, and with it is described
Moving assembly connection；The moving assembly includes guide rod, the first driving member and the second driving member, first driving member and institute
The connection of the second driving member is stated, first driving member is connect with the actuator, second driving member and the part to be detected
Connection, the guide rod are mounted between the stationary fixture and the actuator；
First driving member drives second driving member mobile under the action of the driving member, applies to the part to be detected
Add pulling force；The pulling force detector is mounted on second driving member, the pulling force born for detecting the part to be detected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820356246.6U CN208125522U (en) | 2018-03-15 | 2018-03-15 | Tensile test structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820356246.6U CN208125522U (en) | 2018-03-15 | 2018-03-15 | Tensile test structure |
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| CN208125522U true CN208125522U (en) | 2018-11-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267368A (en) * | 2018-03-15 | 2018-07-10 | 河北银隆新能源有限公司 | Tensile test structure |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108267368A (en) * | 2018-03-15 | 2018-07-10 | 河北银隆新能源有限公司 | Tensile test structure |
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