CN207832367U - A kind of friction force checking device of soft-package battery module - Google Patents
A kind of friction force checking device of soft-package battery module Download PDFInfo
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- CN207832367U CN207832367U CN201820199077.XU CN201820199077U CN207832367U CN 207832367 U CN207832367 U CN 207832367U CN 201820199077 U CN201820199077 U CN 201820199077U CN 207832367 U CN207832367 U CN 207832367U
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- soft
- package battery
- pressing plate
- friction force
- battery module
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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Abstract
The utility model provides a kind of friction force checking device of soft-package battery module, belongs to technical field of lithium ion.It solves the problems, such as to be difficult to detect in the prior art frictional force between soft-package battery module.A kind of friction force checking device of soft-package battery module, including horizontally disposed bottom plate, the pressing plate of opposed bottom up and down motion is provided with above the bottom plate, the installation gap for being placed for the stacking of several soft-package batteries is formed between pressing plate and bottom plate, this friction force checking device further includes controller, display screen and the yoke frame that the horizontal single soft-package battery of pushing tow in installation gap can be stretched into, the pressure sensor one of amount of force when being provided with the feedback single soft-package battery of yoke frame pushing tow on yoke frame, pressure sensor one connects the input terminal of controller, the output end of the display screen connection controller.The utility model can detect the frictional force in soft-package battery module between soft-package battery at various pressures.
Description
Technical field
The utility model belongs to technical field of lithium ion, is related to a kind of frictional force detection dress of soft-package battery module
It sets.
Background technology
Soft-package battery is one kind of lithium ion battery, is the battery for having used aluminum plastic film as packaging material, is pacifying
Soft-package battery at most only understands air-blowing and splits or not will produce more serious situation in the case of full hidden danger, thus safety coefficient compared with
Height, application are more and more common.
Soft-package battery module is that multiple soft-package batteries are placed on the battery entirety formed in the shell surrounded by end plate, later
It is put into automobile and is used as power battery.During the installation process, applying pressure to multiple soft-package batteries often through end plate makes it
Be bonded fixation, end plate is welded later.As Chinese patent literature disclose application No. is the one of CN201620845298.0
Kind welding tooling comprising pedestal is used to place multiple battery cores of power battery thereon；Left and right detent mechanism, left detent mechanism
Left end in bottom plate is set, and the right end in bottom plate is arranged in the left end for first member plate to be located in battery core, right detent mechanism, is used for
Right part is located in the right end of battery core；Hold-down mechanism includes the front-end and back-end of at least two bottom plates arranged symmetrically, is pressing
Front and back side plate is pressed on the front and back sides of battery core under the action of tight drive module, welding sequence is pushed into later and is welded into
Type.
As known from the above in the prior art, often through welding is fixed again after applying pressure to end plate, this pressure is
In order to ensure that Relative sliding will not occur during vehicle operational shock for the soft-package battery in soft-package battery module, but it is soft now
During packet module design, this pressure value is often that technical staff is determined by experience, without by test method into
Row determines, to which the soft-package battery being difficult to ensure in soft-package battery module is not in opposite sliding.Actually this pressure value
Size be need to be carried out according to the value of maximum static friction force between soft pack cell it is counter push away confirmation, and do not detected in existing technology soft
The device of frictional force between packet battery modules.
Invention content
There is the above problem in the utility model, it is proposed that a kind of frictional force inspection of soft-package battery module in view of the prior art
Device is surveyed, technical problem to be solved in the utility model is how to detect Soft Roll in soft-package battery module at various pressures
Frictional force between battery.
The utility model is realized by following technical proposal：A kind of friction force checking device of soft-package battery module, packet
Include horizontally disposed bottom plate, which is characterized in that the pressing plate of opposed bottom up and down motion, the pressing plate are provided with above the bottom plate
The installation gap for being placed for the stacking of several soft-package batteries is formed between bottom plate, this friction force checking device further includes control
Device, display screen and the yoke frame that can stretch into the horizontal single soft-package battery of pushing tow in installation gap, are provided on the yoke frame
The pressure sensor one of amount of force when feeding back yoke frame pushing tow single soft-package battery, the connection control of the pressure sensor one
The input terminal of device, the output end of the display screen connection controller.
The friction force checking device of this soft-package battery module pushes several soft-package batteries by pressing plate and simulates soft-package battery mould
The installation process of group, and pushing tow is carried out under the different pressing plate down force pressures of setting, soft-package battery is to top during detecting pushing tow
The active force of push piece simultaneously shown, frictional force phase of the soft-package battery between the amount of force of yoke frame and several soft-package batteries
Together, maximum static friction force is obtained by the force profile of record, to provide foundation for Soft Roll friction design and technological design.
Detailed process is that pressing plate applies different pressure to several soft-package batteries being placed in installation gap, in each different pressure
Under, yoke frame stretches into a soft-package battery in several soft-package batteries of pushing tow in installation gap, and it is soft that pressure sensor one detects this
Packet battery is to the amount of force of yoke frame and is sent to controller, and controller, which is sent to display screen, to carry out pressure and show, due to
Stiction is bigger than kinetic force of friction, and maximum static friction force can be obtained according to the variation of the active force of detection.Therefore it can obtain
Maximum static friction force under different platen pressures between corresponding soft-package battery is soft to be given for selection end plate in soft-package battery module
The optimal pressure of packet battery provides test data.
In the friction force checking device of above-mentioned soft-package battery module, the yoke frame includes horizontally disposed strip
Cross bar and two strip push rods, one end of cross bar and one end of one of push rod are linked together, the other end of cross bar with it is another
One end of one push rod is linked together, two push rods it is vertical with cross bar respectively and positioned at cross bar the same side, the cross bar it is another
Side is connected with cylinder one, the piston rod of cylinder one is vertical with cross bar and the end of piston rod and cross bar in the middle part of be fixedly connected,
The cylinder one connects the output end of controller.Cylinder one drives piston rod horizontal extension that cross bar level is driven to be moved forward and backward, horizontal
It drives two push rods to stretch into installation gap when bar moves forward and pushing tow work is contacted and carried out with single soft-package battery, make
The soft-package battery becomes mobile from static, and detects record wherein active force of the soft-package battery to push rod.
In the friction force checking device of above-mentioned soft-package battery module, the yoke frame further includes the top of long strip shape
Pushing block, push block are fixedly connected with the other end of two push rods respectively, and push block is respectively perpendicular with two push rods, the top
There is pushing block the pushing tow face for being contacted with single soft-package battery, the pressure sensor one to be arranged on pushing tow face.By setting
Top set pushing block so that the force effect to soft-package battery pushing tow is more average on soft-package battery, and can integrated pushing it is individually soft
Packet battery so that testing result is more accurate.
In the friction force checking device of above-mentioned soft-package battery module, it is soft that feedback pressing plate pushing is provided on the pressing plate
The pressure sensor two of packet cell pressure size, pressure sensor two connect the input terminal of controller.By the way that pressure sensing is arranged
Device two feeds back the pressure that pressing plate is pushed to several soft-package batteries, and the down force pressure of pressing plate is obtained to more acurrate so that
The corresponding down force pressure of maximum static friction force is accurate, applies pressure design convenient for subsequent soft-package battery module end plate.
In the friction force checking device of above-mentioned soft-package battery module, the upper surface of the bottom plate is provided with limitting casing
One, the lower surface of the pressing plate is provided with limitting casing two, the limitting casing one is identical with two shape size of limitting casing and the two just
To setting.Limitting casing one and limitting casing two respectively to the bottom soft-package battery of several soft-package batteries and the top soft-package battery into
Row limit, to more preferably avoid several soft-package batteries during pushing tow from moving so that the problem of testing result inaccuracy.
In the friction force checking device of above-mentioned soft-package battery module, the bottom plate is rectangular plate-like, in bottom plate upper table
Four edges in face are vertically arranged with guide rod, and the pressing plate is set on guide rod and moves up and down along guide rod.It is led by setting
Bar is to ensure that the movement locus of pressing plate will not deviate so that depressed position is more acurrate, improves detection result.
In the friction force checking device of above-mentioned soft-package battery module, the upper surface of the pressing plate is connected with cylinder two,
It is fixedly connected in the middle part of the end of the piston rod of the cylinder two and pressing plate upper surface, and the piston rod of cylinder two hangs down with pressing plate
Directly, the cylinder two connects the output end of controller.It is moved up and down with dynamic pressure plate by cylinder two, and the piston rod of cylinder two
It is fixedly connected in the middle part of pressing plate upper surface, so that pressing plate pushing process is more steady.
In the friction force checking device of above-mentioned soft-package battery module, on the piston rod end and pressing plate of the cylinder two
Connecting plate and circular gasket are provided between surface, the upper surface and the piston rod end of cylinder two of the gasket are fixed, under
Surface is fixedly connected with connecting plate upper surface, and connecting plate is connect with pressing plate upper surface, and the both ends of the connecting plate are vertical curved downwards
Folding forms support portion, and the bottom surface of the support portion is fixedly connected with pressing plate upper surface.By the way that gasket and connecting plate is arranged, in pressing plate
When pressing to more soft-package batteries, the power of two piston rod of cylinder output passes to pressing plate after carrying out component by gasket and connecting plate, from
And pressing plate uniform stressed makes pressing plate uniformly apply pressure to the soft-package battery in installation gap.
Compared with prior art, the friction force checking device of this soft-package battery module has the following advantages：
1, the utility model pushes several soft-package batteries by pressing plate and simulates the installation process of soft-package battery module, and is setting
Under the pressure that fixed different pressing plates push, soft-package battery during pushing tow is detected to the active force of yoke frame and is shown, from
And provide foundation for Soft Roll friction design and technological design.
2, the utility model is rubbed by the way that the structure design of yoke frame is arranged so as to keep pushing tow process more steady
Power detection is more accurate.
Description of the drawings
Fig. 1 is the structural schematic diagram one of the utility model.
Fig. 2 is the structural schematic diagram two of the utility model.
Structural schematic diagram when Fig. 3 is the utility model test.
Fig. 4 is the yoke frame structural schematic diagram of the utility model.
Fig. 5 is the pressure plate structure schematic diagram of the utility model.
Fig. 6 is the floor structure schematic diagram of the utility model.
Fig. 7 is the structural schematic diagram of the utility model circuit connection.
In figure, 1, bottom plate；1a, limitting casing one；2, pressing plate；2a, limitting casing two；3, gap is installed；4, controller；5, it shows
Screen；6, yoke frame；6a, cross bar；6b, push rod；6c, push block；6c1, pushing tow face；7, pressure sensor one；8, cylinder one；9, it presses
Force snesor two；10, guide rod；11, cylinder two；12, gasket；13, connecting plate；13a, support portion；14, soft-package battery one；15, soft
Packet battery two；16, soft-package battery three.
Specific implementation mode
It is specific embodiment of the utility model and in conjunction with attached drawing below, the technical solution of the utility model is made further
Description, but the utility model is not limited to these examples.
As shown in Figure 1, a kind of friction force checking device of soft-package battery module, including horizontally disposed bottom plate 1, bottom plate 1
Top is provided with the pressing plate 2 of the up and down motion of opposed bottom 1, is formed between pressing plate 2 and bottom plate 1 for being laminated for several soft-package batteries
The installation gap 3 of placement.As shown in Fig. 2, the present apparatus further includes that can stretch into the horizontal single soft-package battery of pushing tow in installation gap 3
Yoke frame 6.
As shown in Figure 1, Figure 2 and shown in Fig. 4, yoke frame 6 includes that horizontally disposed strip cross bar 6a and two strips push away
Bar 6b, one end of cross bar 6a and one end of one of push rod 6b are linked together, the other end of cross bar 6a and another push rod 6b
One end be linked together, two push rod 6b it is vertical with cross bar 6a respectively and positioned at cross bar 6a the same side, the cross bar 6a's is another
Side is connected with cylinder 1, and the piston rod of cylinder 1 is vertical with cross bar 6a and the end of piston rod and the middle part of cross bar 6a are fixed
Connection.Yoke frame 6 further includes the push block 6c of long strip shape, and push block 6c is fixed the other end respectively with two push rod 6b
Connection, and push block 6c and two push rod 6b are respectively perpendicular, push block 6c has the pushing tow for being contacted with single soft-package battery
Face 6c1.The pressure sensor 1 of amount of force when being provided with the feedback single soft-package battery of 6 pushing tow of yoke frame on yoke frame 6,
Active force when the single soft-package battery of pushing tow refers to soft-package battery blocking yoke frame 6 to the active force of yoke frame 6, pressure sensing
Device 1 is arranged on the 6c1 of pushing tow face.Alternatively yoke frame 6 is the top plate of rectangular panel body, top plate end face and cylinder
One 8 piston rod connection, the end face opposite with the end face carries out pushing tow for being contacted with single soft-package battery.
As shown in Fig. 2, bottom plate 1 is rectangular plate-like, four edges in 1 upper surface of bottom plate are vertically arranged with guide rod 10,
Pressing plate 2 is set on guide rod 10 and moves up and down along guide rod 10.The upper surface of pressing plate 2 is connected with cylinder 2 11, cylinder 2 11
It is fixedly connected in the middle part of the end of piston rod and 2 upper surface of pressing plate, and the piston rod of cylinder 2 11 is vertical with pressing plate 2.Such as Fig. 1 and
Shown in Fig. 2, it is provided with connecting plate 13 and circular gasket 12 between 2 upper surface of piston rod end and pressing plate of cylinder 2 11, is padded
The upper surface of piece 12 and the piston rod end of cylinder 2 11 are fixed, and lower surface is fixedly connected with 13 upper surface of connecting plate, connecting plate
13 connect with 2 upper surface of pressing plate, and the both ends of connecting plate 13 are bent to form downwards support portion 13a vertically, the bottom surface of support portion 13a with
2 upper surface of pressing plate is fixedly connected.Alternatively, cylinder 1 is substituted after being connected by motor one and lead screw one, passes through electricity
Machine two and lead screw two substitute cylinder 2 11 after connecting.
As shown in figure 3, several soft-package batteries of setting in installation gap 3, since several Soft Rolls are electric at the same pressure
Frictional force between pond is identical as three soft-package batteries are preferably provided with, even if in this way with detection again convenient for fixation.Three Soft Rolls
Battery, respectively soft-package battery 1, soft-package battery 2 15 and soft-package battery 3 16, and set successively up and down in installation gap 3
It sets.
As shown in figure 5, the pressure sensor 29 that feedback pressing plate 2 pushes soft-package battery pressure size is provided on pressing plate 2,
The upper surface of bottom plate 1 is provided with one 1a of limitting casing.As shown in fig. 6, the lower surface of pressing plate 2 is provided with two 2a of limitting casing.Such as Fig. 1 institutes
Show, one 1a of limitting casing is identical with two 2a shape sizes of limitting casing and the two face is arranged.As shown in figure 3, soft-package battery 1 is solid
It is scheduled in one 1a of limitting casing, soft-package battery 3 16 is fixed in two 2a of limitting casing, and soft-package battery 2 15 is located at soft-package battery 1
Between soft-package battery 3 16.
As shown in fig. 7, this friction force checking device further includes controller 4 and display screen 5, pressure sensor 1 and pressure
Sensor 29 is separately connected the input terminal of controller 4, and cylinder 1, cylinder 2 11 and display screen 5 connect the output of controller 4
End.
It is the course of work of the utility model below：
Soft-package battery 1 to soft-package battery 3 16 is placed into installation gap 3, soft-package battery 1 is fixed on limit
In one 1a of frame, soft-package battery 3 16 is fixed in two 2a of limitting casing, and soft-package battery 2 15 overlays on soft-package battery 3 16.This reality
Apply 6 pushing tow soft-package battery 2 15 of yoke frame in example, alternatively, yoke frame 6 also can several soft-package batteries of pushing tow it is most upper
Layer soft-package battery or lowest level soft-package battery, its 2 lower surface degree of roughness of corresponding pressing plate in pushing tow top layer soft-package battery
Identical as the degree of roughness of soft-package battery outer surface, in pushing tow lowest level soft-package battery, its 1 upper surface of corresponding bottom plate is coarse
Degree is identical as the degree of roughness of soft-package battery outer surface.
It presets controller 4 and controls pressure of the pushing of cylinder 2 11 to soft-package battery 1 to soft-package battery 3 16, this
For the prior art.Controller 4 control cylinder 2 11 piston cylinder action band dynamic pressure plate 2 push, pressing plate 2 make soft-package battery 1 with
Soft-package battery 2 15 contacts, and is pushed, and the down force pressure of the detection of pressure sensor 29 at this time feeds back to controller 4, controls
When device 4 judges that the pressure signal that pressure sensor 29 is sent is identical as preset pressure value, control pressing plate 2 keeps the pressure.Control
Device 4 processed controls cylinder 1 and acts, and the piston rod of cylinder 1 drives cross bar 6a movements, cross bar 6a movements to make the top in front of push rod 6b
Pushing block 6c moving contacts soft-package battery 2 15, and pushing tow is carried out to soft-package battery 2 15.
During pushing tow, the pressure sensor 1 on the pushing tow face 6c1 of push block 6c detects soft-package battery 2 15 and acts on
Power on push block 6c, the frictional force size of the power being sized between three soft-package batteries, pressure sensor 1 will detect
Signal be sent to controller 4,4 control display screen 5 of controller is shown.It is higher than three Soft Rolls in the power of push block 6c pushing tows
Soft-package battery 2 15 moves when maximum static friction force between battery, and the pressure that pressure sensor 1 detects at this time becomes smaller, controller
4 control cylinders 1 do not reoperate.The pressure size detected by the pressure sensor 1 that display screen 5 is shown, to operator
Member is just able to know that under 2 pressure of pressing plate of setting, the maximum static friction force between corresponding soft-package battery is pressed in different pressing plates 2
Under power, the maximum static friction force detection carried out respectively between soft-package battery gives operating personnel to have enough test datas
Much pressure is applied to the soft-package battery in soft-package battery module in end to soft-package battery module, carries out test data support,
Convenient for the design of soft-package battery module.
The friction force checking device of this soft-package battery module pushes several soft-package batteries by pressing plate 2 and simulates soft-package battery mould
The installation process of group, and under the pressure that the different pressing plates 2 of setting push, soft-package battery is to yoke frame 6 during detecting pushing tow
Active force and shown, frictional force of the soft-package battery between the amount of force of yoke frame 6 and several soft-package batteries is identical,
Maximum static friction force is obtained by the force profile of record, to provide foundation for Soft Roll friction design and technological design.
The specific embodiments described herein are merely examples of the spirit of the present invention.The utility model institute
Belonging to those skilled in the art can make various modifications or additions to the described embodiments or using similar
Mode substitute, but without departing from the spirit of the present application or beyond the scope of the appended claims.
Although bottom plate 1, one 1a of limitting casing, pressing plate 2, two 2a of limitting casing, installation gap 3, control is used more herein
Device 4, display screen 5, yoke frame 6, cross bar 6a, push rod 6b, push block 6c, pushing tow face 6c1, pressure sensor 1, cylinder 1, pressure
Force snesor 29, guide rod 10, cylinder 2 11, gasket 12, connecting plate 13, support portion 13a, soft-package battery 1, soft-package battery two
15, the terms such as soft-package battery 3 16, but it does not preclude the possibility of using other terms.The use of these items is only for more
Easily describe and explain the essence of the utility model；It is new with this practicality to be construed as any one of the additional limitations all
Type spirit is disagreed.
Claims (8)
1. a kind of friction force checking device of soft-package battery module, including horizontally disposed bottom plate (1), which is characterized in that described
It is provided with the pressing plate (2) of opposed bottom (1) up and down motion above bottom plate (1), is formed and is used between the pressing plate (2) and bottom plate (1)
In the installation gap (3) placed for the stacking of several soft-package batteries, this friction force checking device further includes controller (4), display screen
(5) and the yoke frame (6) for installing the horizontal single soft-package battery of pushing tow in gap (3) can be stretched into, be arranged on the yoke frame (6)
The pressure sensor one (7) of amount of force, the pressure sensor one when having feedback yoke frame (6) pushing tow single soft-package battery
(7) input terminal of connection controller (4), the output end of display screen (5) the connection controller (4).
2. the friction force checking device of soft-package battery module according to claim 1, which is characterized in that the yoke frame
(6) include horizontally disposed strip cross bar (6a) and two strip push rods (6b), one end of cross bar (6a) and one of them
One end of push rod (6b) is linked together, and the other end of cross bar (6a) and one end of another push rod (6b) are linked together, and two push away
Bar (6b) is vertical with cross bar (6a) respectively and is located at the same side of cross bar (6a), and the other side of the cross bar (6a) is connected with cylinder
One (8) are fixedly connected in the middle part of the piston rod end vertical and piston rod with cross bar (6a) of cylinder one (8) and cross bar (6a),
The cylinder one (8) connects the output end of controller (4).
3. the friction force checking device of soft-package battery module according to claim 2, which is characterized in that the yoke frame
(6) further include long strip shape push block (6c), push block (6c) is fixed with the other end of two push rods (6b) respectively to be connected
It connects, and push block (6c) is respectively perpendicular with two push rods (6b), the push block (6c) has for being connect with single soft-package battery
Tactile pushing tow face (6c1), the pressure sensor one (7) are arranged on pushing tow face (6c1).
4. the friction force checking device of soft-package battery module according to claim 1 or 2 or 3, which is characterized in that the pressure
The pressure sensor two (9) that feedback pressing plate (2) pushes soft-package battery pressure size, pressure sensor two (9) are provided on plate (2)
Connect the input terminal of controller (4).
5. the friction force checking device of soft-package battery module according to claim 4, which is characterized in that the bottom plate (1)
Upper surface be provided with limitting casing one (1a), the lower surface of the pressing plate (2) is provided with limitting casing two (2a), the limitting casing one
(1a) is identical with (2a) shape size of limitting casing two and the two face is arranged.
6. the friction force checking device of soft-package battery module according to claim 4, which is characterized in that the bottom plate (1)
For rectangular plate-like, four edges in bottom plate (1) upper surface are vertically arranged with guide rod (10), and the pressing plate (2), which is set in, leads
It moves up and down on bar (10) and along guide rod (10).
7. the friction force checking device of soft-package battery module according to claim 6, which is characterized in that the pressing plate (2)
Upper surface be connected with cylinder two (11), the end of the piston rod of the cylinder two (11) is solid with the middle part of pressing plate (2) upper surface
Fixed connection, and the piston rod of cylinder two (11) is vertical with pressing plate (2), the cylinder two (11) connects the output end of controller (4).
8. the friction force checking device of soft-package battery module according to claim 7, which is characterized in that the cylinder two
(11) connecting plate (13) and circular gasket (12), the gasket are provided between piston rod end and pressing plate (2) upper surface
(12) upper surface and the piston rod end of cylinder two (11) are fixed, and lower surface is fixedly connected with connecting plate (13) upper surface, even
Fishplate bar (13) is connect with pressing plate (2) upper surface, and the both ends of the connecting plate (13) are bent to form downwards support portion (13a) vertically,
The bottom surface of the support portion (13a) is fixedly connected with pressing plate (2) upper surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820199077.XU CN207832367U (en) | 2018-02-05 | 2018-02-05 | A kind of friction force checking device of soft-package battery module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820199077.XU CN207832367U (en) | 2018-02-05 | 2018-02-05 | A kind of friction force checking device of soft-package battery module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207832367U true CN207832367U (en) | 2018-09-07 |
Family
ID=63397002
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820199077.XU Expired - Fee Related CN207832367U (en) | 2018-02-05 | 2018-02-05 | A kind of friction force checking device of soft-package battery module |
Country Status (1)
| Country | Link |
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| CN (1) | CN207832367U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567625A (en) * | 2019-09-11 | 2019-12-13 | 安徽微威胶件集团有限公司 | Device and method for measuring maximum static friction force of parking wedge |
-
2018
- 2018-02-05 CN CN201820199077.XU patent/CN207832367U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110567625A (en) * | 2019-09-11 | 2019-12-13 | 安徽微威胶件集团有限公司 | Device and method for measuring maximum static friction force of parking wedge |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180907 Termination date: 20210205 |
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| CF01 | Termination of patent right due to non-payment of annual fee |