CN209311649U - A kind of automobile-used plastic-aluminum film battery pretightning force applies and battery stress variation measuring device - Google Patents
A kind of automobile-used plastic-aluminum film battery pretightning force applies and battery stress variation measuring device Download PDFInfo
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- CN209311649U CN209311649U CN201822082759.5U CN201822082759U CN209311649U CN 209311649 U CN209311649 U CN 209311649U CN 201822082759 U CN201822082759 U CN 201822082759U CN 209311649 U CN209311649 U CN 209311649U
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- pretightning force
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- pedestal
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- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 33
- 238000005303 weighing Methods 0.000 claims abstract description 14
- 238000005259 measurement Methods 0.000 claims abstract description 13
- 230000000875 corresponding Effects 0.000 claims description 9
- 230000005484 gravity Effects 0.000 abstract description 2
- 230000036316 preload Effects 0.000 abstract description 2
- 230000003014 reinforcing Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 10
- 238000007600 charging Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminum Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 239000002985 plastic film Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000004087 circulation Effects 0.000 description 1
- 238000010281 constant-current constant-voltage charging Methods 0.000 description 1
- 230000003247 decreasing Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Abstract
The utility model belongs to electric automobile power battery field, in particular to a kind of automobile-used plastic-aluminum film battery pretightning force applies and battery stress variation measuring device, including pedestal (1), pedestal (2)；Wherein, pedestal (2) is fixed on the bottom of pedestal (1), and the measuring device further includes that battery fixes to clamp module (3), battery pretightning force applies module (4), battery plate translation module (6) and battery stress measurement module (7)；The utility model accurately can apply fixed preload to plastic-aluminum film battery, and measure to the battery stress during charge and discharge cycles.The weighing sensor of the utility model uses vertical side arrangement, can be influenced to avoid sensor by the gravity of other component.The utility model is easy to operate, it is only necessary to which the size of applied pretightning force can be controlled by adjusting reinforcing bolt.
Description
Technical field
The utility model belongs to electric automobile power battery field, in particular to a kind of automobile-used plastic-aluminum film battery pretightning force is applied
Add and battery stress variation measuring device.
Background technique
Automobile-used aluminum plastic film power battery, since charge is by the effect of electric current, is filled during charge and discharge cycles by stable state
It can become activated state, or stable state is become from activated state electric discharge, the variation of energy can make between charge volume volume and charge
Contact stress generates variation, the study found that the stress between charge directly affects the service performance of battery.
Measurement method and device to battery pretightning force and stress is not disclosed in the prior art, and most of battery deformation is surveyed
In the technology in amount field, only only a few is slightly related to the application of battery pretightning force.Therefore, precise measurement plastic-aluminum film battery exists
Influence of the stress variation caused by charge and discharge cycles under different pretightning forces to battery performance and battery group is used
The research of assembly method is of great significance.
Summary of the invention
Apply the purpose of the utility model is to provide a kind of automobile-used plastic-aluminum film battery pretightning force and battery stress variation measures
Device, which, which can apply certain pretightning force for automobile-used plastic-aluminum film battery and accurately measure automobile-used plastic-aluminum film battery, is recycling
Stress variation caused by different moments in charge and discharge, in order to which scholar studies influence of the pretightning force to battery performance.
The purpose of this utility model is achieved by the following technical solution:
A kind of automobile-used plastic-aluminum film battery pretightning force applies and battery stress variation measuring device, including pedestal 1, pedestal 2；Its
In, pedestal 2 is fixed on the bottom of pedestal 1, and the measuring device further includes that battery fixes to clamp module 3, battery pretightning force applies
Module 4, battery plate translation module 6 and battery stress measurement module 7；Wherein,
Battery stress measurement module 7 includes weighing sensor 21, sensor spacer pad 22, bottom plate 23 and floor 24；Its
In, bottom plate 23 and floor 24 are arranged vertically on pedestal 1, and bottom plate 23 is fixed in the front surface of floor 24；The quadrangle of bottom plate 23 is set
There is bottom plate connecting hole, four pressing plate connecting holes are additionally provided on bottom plate 23；Groove, sensor are equipped in the middle part of the front surface of bottom plate 23
Spacer pad 22 is fixed in the groove in the middle part of 23 front surface of bottom plate；Weighing sensor 21 is arranged in sensor spacer pad
22 front end；
Battery plate translation module 6 includes top plate 15, pressing plate 16, top plate axis 17, pressing plate shaft 18, linear bearing 19, locking
Double nut 10, the first fastening screw 20 and the second fastening screw 25, wherein the quadrangle of top plate 15 is equipped with and bottom plate connecting hole phase
Corresponding top plate connecting hole, four top plate axis 17 are each passed through the bottom plate connecting hole and top plate connecting hole, before top plate axis 17
End is fastened across top plate 15, and by locking double nut 10；The rear end of top plate axis 17 passes through bottom plate 23, and tight by first
Gu screw 20 is fixed；Between bottom plate 23 and top plate 15, linear bearing 19 is arranged on pressing plate 16 pressing plate 16, setting
Position is corresponding with the pressing plate connecting hole on bottom plate 23；Four pressing plate shafts 18 pass through pressing plate connecting hole, and the rear end of pressing plate shaft 18 passes through
Second fastening screw 25 is fixed on bottom plate 23；The front end of pressing plate shaft 18 is slidably connected with the cooperation of linear bearing 19；Top plate axis 17
The longitudinal center line for being respectively relative to pedestal 1 with pressing plate shaft 18 is arranged symmetrically；
It includes vice 13 and vice fixing bolt 14 that battery, which fixes to clamp module 3,；Wherein,
Vice 13 is fixed on pedestal 1 by vice fixing bolt 14, and the clamping end of vice 13 is located at top plate 15 and pressing plate
Below 16 spaces constituted；
It includes fixed bracket 8, pressure plare 9 and pretightning force bolt 11 that battery pretightning force, which applies module 4, wherein
Pressure plare 9 is the " u "-shaped plate that Open Side Down, fixed by fixed bracket 8 between the bottom and pedestal 1 of pressure plare 9；
The top of pressure plare 9 is equipped with threaded hole, and pretightning force bolt 11 passes through pressure plare 9 by the threaded hole, and can be in pressure plare 9
The rear end of horizontal turn in threaded hole, pretightning force bolt 11 is contacted with the front surface of top plate 15.
The floor 24 is L shape plate, including floor vertical section and floor horizontal segment, wherein floor horizontal segment is fixed in
On pedestal 1, the front surface and bottom plate 23 of floor vertical section are affixed.
Pedestal 1 is equipped with two hole slots for accommodating the bottom of pressure plare 9, and fixed bracket 8 is L shape, including mutual
Two vertical fixed sections are respectively equipped with described two solid with fixed bracket 8 in the side of pedestal 1 with the bottom of pressure plare 9
Determine the corresponding threaded hole of section, the hole slot on the pedestal 1 is injected in the bottom of pressure plare 9, will fix the two of bracket 8 by bolt
Side of a fixed section respectively with the bottom of pedestal 1 and pressure plare 9 is fixed, and forms half I-shaped rock-steady structure.
The pretightning force bolt cushion block 12 with the rear end in contact of pretightning force bolt 11 is equipped in the front surface of top plate 15.
The utility model has the beneficial effects that:
The utility model can accurately to plastic-aluminum film battery apply fixed preload, and to charge and discharge cycles during
Battery stress measures.
The weighing sensor of the utility model uses vertical side arrangement, can be to avoid sensor by the gravity of other component
It influences.
The utility model is easy to operate, it is only necessary to which the size of applied pretightning force can be controlled by adjusting reinforcing bolt.
Detailed description of the invention
Fig. 1 be a kind of automobile-used plastic-aluminum film battery pretightning force of the utility model apply and battery stress variation measuring device it is whole
Body structural schematic diagram；
Fig. 2 is that a kind of the utility model automobile-used plastic-aluminum film battery pretightning force applies and battery stress variation measuring device is bowed
Depending on structural assembly diagram；
Fig. 3 is the structural schematic diagram that battery pretightning force applies module 4；
Fig. 4 is the attachment structure schematic diagram that battery pretightning force applies module 4；
Fig. 5 is the structural schematic diagram that battery fixes to clamp module 3；
Fig. 6 is 6 structural schematic diagram of battery plate translation module；
Fig. 7 is the composition and installation diagram of battery plate translation module 6；
Fig. 8 is the structural schematic diagram of battery stress measurement module 7；
Fig. 9 is the positioning of weighing sensor 21 and the connection schematic diagram of sensor spacer pad 22；
Figure 10 is that the utility model measures the schematic diagram that stress variation affects battery capacity under different pretightning forces.
Appended drawing reference:
1 pedestal, 2 pedestal
3 batteries fix to clamp 4 battery pretightning force of module and apply module
56 battery plate translation modules of plastic-aluminum film battery to be measured
7 battery stress measurement modules 8 fix bracket
9 pressure plares 10 lock double nut
11 pretightning force bolt, 12 pretightning force bolt cushion block
13 vice, 14 vice fixing bolt
15 top plate, 16 pressing plate
17 top plate axis, 18 pressing plate shaft
19 linear bearing, 20 first fastening screw
21 weighing sensor, 22 sensor spacer pad
23 bottom plate, 24 floor
25 second fastening screws
Specific embodiment
In the following with reference to the drawings and specific embodiments, a kind of automobile-used plastic-aluminum film battery pretightning force of the utility model is applied and
Battery stress variation measuring device is described in detail.
As depicted in figs. 1 and 2, automobile-used plastic-aluminum film battery pretightning force application and battery stress variation measuring device, including bottom
Seat 1, pedestal 2, battery fix to clamp module 3, battery pretightning force applies module 4, battery plate translation module 6 and battery stress and surveys
Measure module 7.
Pedestal 2 is fixed on the bottom of pedestal 1, and the two forms stable " T " shape structure.
As shown in Figure 8 and Figure 9, battery stress measurement module 7 includes weighing sensor 21, sensor spacer pad 22, bottom
Plate 23 and floor 24.Battery stress measurement module 7 is used to carry out pretightning force measurement and stress variation for plastic-aluminum film battery 5 to be measured
Measurement.
Bottom plate 23 and floor 24 are arranged vertically on pedestal 1, and bottom plate 23 is fixed in the front surface of floor 24.Preferably, rib
Plate 24 is L shape plate, including floor vertical section and floor horizontal segment, wherein floor horizontal segment is fixed on pedestal 1, and floor is perpendicular
The front surface of straight section and bottom plate 23 are affixed.Floor 24 is used to support bottom plate 23.
The quadrangle of bottom plate 23 is equipped with bottom plate connecting hole, is additionally provided with four pressing plate connecting holes on bottom plate 23.The preceding table of bottom plate 23
Middle face is equipped with groove, and sensor spacer pad 22 is fixed in the groove in the middle part of 23 front surface of bottom plate.Weighing sensor
21 are arranged in the front end of sensor spacer pad 22.
As shown in Fig. 6, Fig. 7 and Fig. 8, battery plate translation module 6 includes top plate 15, pressing plate 16, top plate axis 17, pressing plate shaft
18, linear bearing 19, locking double nut 10, the first fastening screw 20 and the second fastening screw 25.
The quadrangle of top plate 15 is equipped with top plate connecting hole corresponding with bottom plate connecting hole.Four top plate axis 17 are each passed through institute
Bottom plate connecting hole and top plate connecting hole are stated, the front end of top plate axis 17 passes through top plate 15, and is fastened by locking double nut 10；
The rear end of top plate axis 17 passes through bottom plate 23, and fixed by the first fastening screw 20.It is double by rotation lock when working condition
Nut 10 realizes the thin tuning of pretightning force, and the regulative mode of four locking double nuts 10 uses the side of a small amount of repeatedly diagonal formula
Formula is adjusted.
As shown in fig. 7, pressing plate 16 is between bottom plate 23 and top plate 15.Linear bearing 19 is arranged on pressing plate 16, sets
The position set is corresponding with the pressing plate connecting hole on bottom plate 23.Four pressing plate shafts 18 pass through pressing plate connecting hole, the rear end of pressing plate shaft 18
It is fixed on bottom plate 23 by the second fastening screw 25；The front end of pressing plate shaft 18 is slidably connected with the cooperation of linear bearing 19, so that
Pressing plate 16 moves horizontally after being pressurized along pressing plate shaft 18, and power is all passed to weighing sensor 21, completes stress measurement.
As shown in figure 4, the longitudinal center line X that top plate axis 17 and pressing plate shaft 18 are respectively relative to pedestal 1 is arranged symmetrically.
When working condition, weighing sensor 21 is contacted with pressing plate 16, but pressing plate 16 is not to 21 applied force of weighing sensor.
As shown in Figure 1-Figure 3, it includes vice 13 and vice fixing bolt 14 that battery, which fixes to clamp module 3,.
Vice 13 is fixed on pedestal 1 by vice fixing bolt 14.The clamping end of vice 13 is located at top plate 15 and pressing plate
Below 16 spaces constituted.
When detection, plastic-aluminum film battery 5 to be measured is placed in the space that top plate 15 and pressing plate 16 are constituted, plastic-aluminum film battery to be measured
The sealing margin of 5 downsides is clamped by vice 13, carries out positioning clamping by top plate 15 and pressing plate 16.
As shown in Figure 4 and Figure 5, it includes fixed bracket 8, pressure plare 9 and pretightning force bolt that battery pretightning force, which applies module 4,
11.The battery pretightning force applies module 4 and is used to provide certain pretightning force for plastic-aluminum film battery 5 to be measured.
Wherein, pressure plare 9 is the " u "-shaped plate that Open Side Down, passes through fixed bracket between the bottom and pedestal 1 of pressure plare 9
8 is fixed.
Preferably, pedestal 1 is equipped with two hole slots for accommodating the bottom of pressure plare 9.Fixed bracket 8 is L shape, packet
Include orthogonal two fixed sections.It is respectively equipped with and is fixed described in bracket 8 in the side of pedestal 1 Yu the bottom of pressure plare 9
The corresponding threaded hole of two fixed sections.The hole slot on the pedestal 1 is injected in the bottom of pressure plare 9, by bolt by fixed
Side of two fixed sections of frame 8 respectively with the bottom of pedestal 1 and pressure plare 9 is fixed, and forms half stable " work " word
Shape rock-steady structure.
The top of pressure plare 9 is equipped with threaded hole, and pretightning force bolt 11 passes through pressure plare 9 by the threaded hole, and can be
Horizontal turn in the threaded hole of pressure plare 9.The rear end of pretightning force bolt 11 is contacted with the front surface of top plate 15.In working condition
Under, certain pretightning force is generated to top plate 15 by adjusting pretightning force bolt 11.
Preferably, in order to prevent pretightning force to top plate 15 generate stress deformation damage, top plate 15 front surface be equipped with
The pretightning force bolt cushion block 12 of the rear end in contact of pretightning force bolt 11, can not only guarantee the stability of pretightning force bolt 11 but also can be with
Protection top plate 15 preserves from.
A kind of automobile-used plastic-aluminum film battery pretightning force of the utility model applies and the work of battery stress variation measuring device
Process are as follows:
1) plastic-aluminum film battery 5 to be measured is placed between top plate 15 and pressing plate 16, first with vice 13 to the sealing edge on the downside of it
Edge is clamped, and then adjusting locking double nut 10 makes top plate 15 be fully engaged plastic-aluminum film battery 5 to be measured；
2) pretightning force bolt 11 is adjusted with ratchet spanner, the pressure top plate 15 of pretightning force bolt 11, top plate 15 is treated
The effect for surveying 5 applied force of plastic-aluminum film battery, acts on power on weighing sensor 21 eventually by moving horizontally for pressing plate 16,
Complete the thick application of pretightning force.Then with ratchet spanner, thin tuning locks double nut 10 by the way of a small amount of repeatedly diagonal formula
To setting pretightning force, the application of pretightning force is completed.
3) it when above-mentioned debugging is to suitable pretightning force, is connected by battery charging and discharging equipment, charge and discharge is carried out to battery
Test, while carrying out battery stress variation test.
If Figure 10 is the test result that utility model device is tested, in experiment, in conjunction with the charging/discharging apparatus of battery, treat
It surveys plastic-aluminum film battery 5 and carries out the cycle charge-discharge under 0kg, 10kg, 30kg, 80kg pretightning force respectively, detect battery capacity SOC
Variation under different pretightning forces.
Method particularly includes: first electricity is vented by plastic-aluminum film battery 5 to be measured according to its specifications that dispatch from the factory, then with the electricity of 8A
Stream carries out constant-current constant-voltage charging to assigned voltage, by battery standing 1h after being full of, then carries out constant-current discharge with the electric current of 8A and extremely advises
Constant voltage, then 1h is stood, the above are a circulations.It needs to guarantee that experimental temperature perseverance is 25 DEG C in experimentation.
It can be seen that in the aluminum plastic film battery charging and discharging stress variation test of 0kg, 10kg, 30kg, 80kg pretightning force,
The stress variation repeatability and precision measured is preferable.Where it can be seen that battery stress increasing degree is smaller when 10kg, electricity
Tankage can reach 98% or so；And 30kg pretightning force when testing battery stress variation amplitude have and slightly improve, battery capacity
100% can be reached；Pretightning force carries out battery charging and discharging pulsating stress measure of the change in 80kg, and battery capacity is slightly decreased energy
Reach 99% or so, by analysis of experimental results it is found that battery capacity declines when pretightning force is applied for 80kg, analysis
This since battery itself is under pressure excessive the result is that cause inside battery that partial short-circuit occurs, self-discharge holds battery
Amount decline.
Therefore, the plastic-aluminum film battery which demonstrates under the different pretightning forces referred in background technique is followed in charge and discharge
Stress variation is different during ring influences battery capacity bring.
Claims (4)
1. a kind of automobile-used plastic-aluminum film battery pretightning force applies and battery stress variation measuring device, including pedestal (1), pedestal (2)；
Pedestal (2) is fixed on the bottom of pedestal (1), it is characterised in that: the measuring device further include battery fix to clamp module (3),
Battery pretightning force applies module (4), battery plate translation module (6) and battery stress measurement module (7)；
Battery stress measurement module (7) includes weighing sensor (21), sensor spacer pad (22), bottom plate (23) and floor
(24)；Bottom plate (23) and floor (24) are arranged vertically on pedestal (1), and bottom plate (23) is fixed in the front surface of floor (24)；Bottom
The quadrangle of plate (23) is equipped with bottom plate connecting hole, is additionally provided with four pressing plate connecting holes on bottom plate (23)；In the front surface of bottom plate (23)
Portion is equipped with groove, and sensor spacer pad (22) is fixed in the groove in the middle part of bottom plate (23) front surface；Weighing sensor
(21) it is arranged in the front end of sensor spacer pad (22)；
Battery plate translation module (6) includes top plate (15), pressing plate (16), top plate axis (17), pressing plate shaft (18), linear bearing
(19), double nut (10), the first fastening screw (20) and the second fastening screw (25) are locked, the quadrangle of top plate (15) is equipped with and bottom
The corresponding top plate connecting hole of plate connecting hole, four top plate axis (17) are each passed through the bottom plate connecting hole and top plate connecting hole,
The front end of top plate axis (17) passes through top plate (15), and is fastened by locking double nut (10)；It wears the rear end of top plate axis (17)
It crosses bottom plate (23), and fixed by the first fastening screw (20)；Pressing plate (16) is located between bottom plate (23) and top plate (15), straight line
Bearing (19) is arranged on pressing plate (16), and the position of setting is corresponding with the pressing plate connecting hole on bottom plate (23)；Four pressing plate shafts
(18) pressing plate connecting hole is passed through, the rear end of pressing plate shaft (18) is fixed on bottom plate (23) by the second fastening screw (25)；Pressing plate
The front end of axis (18) is slidably connected with linear bearing (19) cooperation；Top plate axis (17) and pressing plate shaft (18) are respectively relative to pedestal
(1) longitudinal center line is arranged symmetrically；
It includes vice (13) and vice fixing bolt (14) that battery, which fixes to clamp module (3),；
Vice (13) is fixed on pedestal (1) by vice fixing bolt (14), and the clamping end of vice (13) is located at top plate (15)
Below the space constituted with pressing plate (16)；
It includes fixing bracket (8), pressure plare (9) and pretightning force bolt (11) that battery pretightning force, which applies module (4),
Pressure plare (9) is the " u "-shaped plate that Open Side Down, passes through fixed bracket (8) between the bottom and pedestal (1) of pressure plare (9)
It is fixed；The top of pressure plare (9) is equipped with threaded hole, and pretightning force bolt (11) passes through pressure plare (9) by the threaded hole, and can
The rear end of the horizontal turn in the threaded hole of pressure plare (9), pretightning force bolt (11) is contacted with the front surface of top plate (15).
2. automobile-used plastic-aluminum film battery pretightning force as described in claim 1 applies and battery stress variation measuring device, feature
Be: the floor (24) is L shape plate, including floor vertical section and floor horizontal segment, wherein floor horizontal segment is fixed in bottom
On seat (1), the front surface and bottom plate (23) of floor vertical section are affixed.
3. automobile-used plastic-aluminum film battery pretightning force as described in claim 1 applies and battery stress variation measuring device, feature
Be: pedestal (1) is equipped with two hole slots for accommodating the bottom of pressure plare (9), and fixed bracket (8) are L shape, including phase
Mutually two vertical fixed sections are respectively equipped with the institute with fixed bracket (8) in the side of pedestal (1) and the bottom of pressure plare (9)
The corresponding threaded hole of two fixed sections is stated, the hole slot on the pedestal (1) is injected in the bottom of pressure plare (9), will by bolt
Side of two fixed sections of fixed bracket (8) respectively with the bottom of pedestal (1) and pressure plare (9) is fixed, and forms half
I-shaped rock-steady structure.
4. automobile-used plastic-aluminum film battery pretightning force as described in claim 1 applies and battery stress variation measuring device, feature
It is: is equipped with the pretightning force bolt cushion block (12) with the rear end in contact of pretightning force bolt (11) in the front surface of top plate (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822082759.5U CN209311649U (en) | 2018-12-12 | 2018-12-12 | A kind of automobile-used plastic-aluminum film battery pretightning force applies and battery stress variation measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822082759.5U CN209311649U (en) | 2018-12-12 | 2018-12-12 | A kind of automobile-used plastic-aluminum film battery pretightning force applies and battery stress variation measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209311649U true CN209311649U (en) | 2019-08-27 |
Family
ID=67676652
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822082759.5U Expired - Fee Related CN209311649U (en) | 2018-12-12 | 2018-12-12 | A kind of automobile-used plastic-aluminum film battery pretightning force applies and battery stress variation measuring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209311649U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617907A (en) * | 2019-09-04 | 2019-12-27 | 上海理工大学 | Outer surface pressing device of soft package battery and pressure testing method thereof |
| CN111537126A (en) * | 2020-04-28 | 2020-08-14 | 苏州清陶新能源科技有限公司 | Tool for determining pretightening force of soft package battery, method for determining pretightening force of soft package battery and method for assembling module |
-
2018
- 2018-12-12 CN CN201822082759.5U patent/CN209311649U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110617907A (en) * | 2019-09-04 | 2019-12-27 | 上海理工大学 | Outer surface pressing device of soft package battery and pressure testing method thereof |
| CN111537126A (en) * | 2020-04-28 | 2020-08-14 | 苏州清陶新能源科技有限公司 | Tool for determining pretightening force of soft package battery, method for determining pretightening force of soft package battery and method for assembling module |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190827 Termination date: 20201212 |
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| CF01 | Termination of patent right due to non-payment of annual fee |