CN109164324A - BDU automatic test machine - Google Patents
BDU automatic test machine Download PDFInfo
- Publication number
- CN109164324A CN109164324A CN201811113339.7A CN201811113339A CN109164324A CN 109164324 A CN109164324 A CN 109164324A CN 201811113339 A CN201811113339 A CN 201811113339A CN 109164324 A CN109164324 A CN 109164324A
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- bdu
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- plummer
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- 238000012360 testing method Methods 0.000 title claims abstract description 68
- 238000001514 detection method Methods 0.000 claims abstract description 99
- 230000001681 protective effect Effects 0.000 claims description 27
- 230000002950 deficient Effects 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 13
- 239000000523 sample Substances 0.000 claims description 9
- 238000003860 storage Methods 0.000 claims description 7
- 238000009413 insulation Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000011897 real-time detection Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 235000013399 edible fruits Nutrition 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a kind of BDU automatic test machines.The BDU automatic test machine includes cabinet, detection jig on the cabinet is set, the test equipment being electrically connected with the detection jig and the operating display being electrically connected with the test equipment, the detection jig includes the plummer being slidably connected on the cabinet, drive the first driving mould group of the plummer movement, the guide rod being vertically arranged on the cabinet, it is set in the second driving mould group of the detection mould group and driving to move up and down on the guide rod relative to the plummer the detection mould group movement, the plummer and the detection mould group cooperate, the test equipment and the detection mould group are electrically connected.The technical solution adopted in the present invention has many advantages, such as that detection efficiency is high, precision is high, improves personnel safety.
Description
Technical field
The present invention relates to battery component the field of test technology, a kind of particularly BDU automatic test machine.
Background technique
Important composition portion of the BDU (Battery Disconnect Unit, battery pack breaking units) as new-energy automobile
Part is mainly used for cutting off the electric current between the high-voltage battery group and other power electronic products of new-energy automobile to protect system
Safety, therefore, the performances such as safety and reliability are particularly important.
Currently, mainly cooperate high-current test mode to realize by manual simplified tooling the detection of BDU performance in the industry,
This detection mode one side efficiency is relatively low, and another aspect high-current test is also dangerous.It is quick with new-energy automobile
Development, the yield of new-energy automobile constantly increase, and existing detection mode has been unable to meet the detection of growing BDU product
Efficiency requirements.
Summary of the invention
In order to overcome the defects of the prior art, the embodiment of the invention provides a kind of BDU automatic test machines.
The embodiment of the present application discloses: a kind of BDU automatic test machine, including cabinet, the detection being arranged on the cabinet
Jig, the test equipment being electrically connected with the detection jig and the operating display being electrically connected with the test equipment,
The detection jig includes the first driving mould of the plummer being slidably connected on the cabinet, the driving plummer movement
Group, is set in the detection to move up and down on the guide rod relative to the plummer at the guide rod being vertically arranged on the cabinet
Mould group and the second driving mould group of the driving detection mould group movement, the plummer and the detection mould group cooperate, described
Test equipment and the detection mould group are electrically connected.
Preferably, the detection jig further includes bottom plate, and the bottom plate is fixedly connected on the cabinet, the plummer
It is slidably connected on the bottom plate, the guide rod is arranged on the bottom plate.
Preferably, the first driving mould group is the slider cylinder being fixed on the bottom plate, and the plummer is fixed on
In the slider cylinder.
Preferably, multiple probes that the detection mould group includes a fixed plate and is arranged in the fixed plate, Duo Gesuo
It states point to be detected on probe and BDU to correspond, multiple probes are connect with the test equipment.
Preferably, the second driving mould group includes being fixed on the guide rod and being located at the fixed plate to hold far from described
The top plate of microscope carrier side and the cylinder being fixed on the top plate, the top plate are equipped with a through-hole, the piston rod of the cylinder
It is connect across the through-hole with the fixed plate.
Preferably, the detection jig includes current sensor detection jig, pressure drop conductive detection jig and pressure resistance insulation
Test fixture, three detection jigs are set gradually along the length direction of the cabinet.
Preferably, one is additionally provided on the cabinet for the detection jig to be enclosed in interior protective cover, the protection
In a rectangular parallelepiped shape, the width of the protective cover is smaller than the width of the cabinet, the side of the protective cover towards pan feeding direction for cover
Upper end is equipped with vertical hinged door, and lower end is equipped with opening, and BDU to be detected is put into the detection jig from the opening.
Preferably, pendulum material frame is additionally provided on the cabinet, the pendulum material frame is arranged along the length direction of the cabinet in institute
It states the pan feeding side of cabinet and pendulum material frame is arranged outside the protective cover.
Preferably, defective products frame is additionally provided on the cabinet, the defective products frame is arranged outside the protective cover.
Preferably, the operating display is touch display screen, further includes storage module and read module.
Beneficial effects of the present invention are as follows:
1. making to carry using the first driving mould group driving plummer movement, the second driving mould group driving detection mould group movement
Platform and detection mould group cooperate automatically, compared with the mode that manual operation in the prior art aligns the two, this automatic aligning
Efficiency and accuracy are greatly improved；
2. detection mould group can detect multiple tested points on BDU simultaneously, detection efficiency is improved；
3. entire detection process is not necessarily to contact measured product and test equipment by Machine automated operation, personnel, therefore
The safety of personnel is improved, meanwhile, detection method is with good stability, so that the data of detection have higher reference
Value；
4. the parameter and critical field of the settable different model BDU of operating display are detected with the BDU for adapting to different model,
The versatility of the BDU automatic test machine detection is improved, meanwhile, operating display can directly will test the mark of data and setting
Quasi- range compares, to carry out the automatic judgement of non-defective unit and defective products, further improves detection efficiency.
For above and other objects, features and advantages of the invention can be clearer and more comprehensible, preferred embodiment is cited below particularly,
And cooperate institute's accompanying drawings, it is described in detail below.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the schematic perspective view of BDU automatic test machine described in the embodiment of the present invention；
Fig. 2 is the structural schematic diagram that jig is detected described in the embodiment of the present invention；
Fig. 3 is detection jig described in the embodiment of the present invention in the schematic diagram of working condition
Fig. 4 is the top view of BDU automatic test machine described in the embodiment of the present invention.
The appended drawing reference of the figures above: 10- cabinet, 21- current sensor detection jig, 211- plummer, 212- guide rod,
213- detects mould group, 2131- fixed plate, 2132- probe, the driving mould group of 214- second, 2141- top plate, 2142- cylinder, 215-
Bottom plate, 216- slider cylinder, 217- bearing, 218- limited block, 22- pressure drop conductive detection jig, 23- pressure resistance Insulation test are controlled
Tool, 30- test equipment, 40- operating display, 50- protective cover, 51- vertical hinged door, 52- supporter, 60- pendulum material frame, 70- are bad
Product frame, 80- alarm lamp, 90- switch button.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
As shown in Figs. 1-2, BDU automatic test machine of the present invention include cabinet 10, the inspection that is arranged on the cabinet 10
Measurement fixture, the test equipment 30 being electrically connected with the detection jig and the operation being electrically connected with the test equipment 30 are shown
Display screen 40.Wherein, the detection jig includes the plummer 211 being slidably connected on the cabinet 10, the driving plummer
First driving mould group of 211 movements, is set on the guide rod 212 relatively the guide rod 212 being vertically arranged on the cabinet 10
In the second driving of detection mould group 213 and driving detection mould group 213 up and down motion that the plummer 211 moves up and down
Mould group 214, the plummer 211 cooperate with the detection mould group 213, the test equipment 30 and 213 electricity of detection mould group
Property connection, the operating display includes setup module and determination module.
As Figure 2-3, before testing BDU, what personnel tested needed for being first arranged on operating display 40
The relevant parameter and its critical field of BDU；When test, BDU is placed on plummer 211 and fixes by personnel, the first driving mould
Group driving plummer 211 slides into preset position corresponding with detection mould group 213, the second driving driving detection mould of mould group 214
Group 213, which moves downward, makes to detect mould group 213 and plummer 211 cooperates, i.e. detection mould group 213 touches on plummer 211
BDU detected part, BDU is tested with the test equipment 30 that is connected of detection mould group 213, sentencing on operating display 40
Cover half block is compared by the data of real-time detection with preset standard, when the data of real-time detection are within the scope of preset standard
When, the BDU is determined for non-defective unit, when the data of real-time detection are not within the scope of preset standard, determines that the BDU for defective products, sentences
Determine result to show by operating display 40 so that personnel know test result；After test, the second driving mould group 214
Driving detection mould group 213 travels upward and out plummer 211, the first driving mould group driving plummer 211 along backtracking so as to
Personnel take out BDU.
By above structure, BDU automatic test machine described in the embodiment of the present invention is had the advantage that
1. being transported using the first driving mould group driving plummer 211 movement, the second driving driving detection mould group 213 of mould group 214
It moves, cooperates plummer 211 and detection mould group 213 automatically, compared with the mode that manual operation in the prior art aligns the two,
The efficiency and accuracy of this automatic aligning are greatly improved；
2. detection mould group 213 can detect multiple tested points on BDU simultaneously, detection efficiency is improved；
3. entire detection process is not necessarily to contact measured product and test equipment by Machine automated operation, personnel, therefore
The safety of personnel is improved, meanwhile, detection method is with good stability, so that the data of detection have higher reference
Value；
4. the parameter and critical field of the settable different model BDU of operating display 40 are examined with the BDU for adapting to different model
It surveys, improves the versatility of the BDU automatic test machine detection, meanwhile, operating display 40 can directly will test data and set
Fixed critical field compares, to carry out the automatic judgement of non-defective unit and defective products, further improves detection efficiency.
Specifically, as shown in Figs. 1-2, cabinet 10 described in the present embodiment is rectangular parallelepiped structure, the cabinet 10 has length
Spend direction and width direction；The detection jig is arranged on the top surface of cabinet 10.The first driving mould group is preferably fixed
Slider cylinder 216 on the cabinet 10, plummer 211 are detachably secured in slider cylinder 216, and slider cylinder 216 is driven
Dynamic plummer 211 along cabinet 10 width direction linear slide, when needing replacing different plummers 211 to test different model
BDU when, the disassembly and installation of plummer 211 is all very convenient；It is described to lead to ensure to detect the stability that mould group 213 moves
The quantity of bar 212 is four, and four guide rods 212 set gradually to form a rectangle, and detection mould group 213 is substantially rectangle
Shape, the rectangle formed with four guide rods 212 match, and four angles of detection mould group 213 pass through bearing 217 respectively and are set in one by one
On four guide rods 212；Multiple spies that the detection mould group 213 fixed plate 2131 and be arranged in the fixed plate 2131 including one
Point to be detected corresponds on needle 2132, multiple probes 2132 and BDU, multiple probes 2132 and the tester
Device 30 is electrically connected, and by 2132 modularity of fixed plate 2131 and probe, customizes a kind of detection mould group for the BDU of different model
213, convenient for when testing the BDU of different model, will can entirely detect the whole switching of mould group 213, be conducive to save switching work
When；The second driving mould group 214 includes being fixed on the guide rod 212 and being located at the fixed plate 2131 far from the carrying
The top plate 2141 of 211 side of platform and the cylinder 2142 being fixed on the top plate 2141, the top plate 2141 are equipped with a through-hole
(not shown), the piston rod of the cylinder 2142 pass through the through-hole and connect with the fixed plate 2131, the work of cylinder 2142
Stopper rod drives detection mould group 213 to move up and down along guide rod 212.
As shown in Fig. 2, the detection jig further includes bottom plate 215, the bottom plate 215 is fixedly connected on the cabinet 10
On, the plummer 211 is slidably connected on the bottom plate 215, specifically, the slider cylinder 216 is arranged in the bottom plate
On, the plummer is fixed in the slider cylinder 216, and the guide rod 212 is arranged on the bottom plate 215.The bottom plate 215
The first driving mould group and the second driving mould group 214 can be buffered and driving the impact generated when corresponding component movement to cabinet 10
Power, while being also convenient for disassembly and installation when the whole series detect jig maintenance and repair.In addition, when needing Extended Spaces on cabinet 10
When increasing detection jig, the expansion of cabinet 10 itself and production, the installation of detection jig can carry out independently of each other simultaneously, i.e.,
While expanding to 10 cabinet body of cabinet, all parts that can will test jig are mounted on bottom plate 215, are formed a set of complete
Whole, independent detection jig, after the cabinet body of cabinet 10 expand it is good after, then a whole set of jig is fixed on by cabinet by bottom plate 215
On 10, manufacture and set-up time are effectively saved.
Further, with continued reference to a limited block 218 shown in 2, is additionally provided on the bottom plate 215, the limited block 218 is set
It sets in the slider cylinder 216 close to one end of the detection mould group 213, for the plummer 211 for sliding to detection mould group 213
It is limited, improves the accuracy of 211 stop position of plummer.Further, the bottom plate 215 is equipped with a switch button
90, the switch button 90 is electrically connected with the slider cylinder 216, when BDU is placed on plummer 211 by personnel and is pressed
After switch button 90, slider cylinder 216 drives plummer 211 to slide, and setting switch button 90 can be such that personnel's operation has
There is more sufficient time to check whether BDU puts and restart the work of slider cylinder 216 afterwards in place, it is ensured that test knot for independence
The accuracy of fruit.
As shown in Figure 1, it is described detection jig include for test b DU performance of current sensors current sensor detection control
Have 21, for the pressure drop conductive detection jig 22 of test b DU product pressure drop conduction property and for test b DU pressure resistance insulation performance
Pressure-resistant Insulation test jig 23, three detection jigs set gradually along the length direction of the cabinet 10, three detection jigs
Structure it is roughly the same, detection mould group 213 may because test content difference due to its shape there is some difference.The same BDU
Above three detection jig is passed sequentially through, the detection of above-mentioned three performances can be completed, improved described in the embodiment of the present invention
The integrated level of BDU automatic test machine test function, meanwhile, above three detects relatively independent work between jig, it does not interfere with each other,
Different products can be detected simultaneously, improve detection efficiency.
As shown in Figure 1 and Figure 4, one is additionally provided on the cabinet 10 for the detection jig to be enclosed in interior protective cover
50, in a rectangular parallelepiped shape, the width of the protective cover 50 is smaller than the width of the cabinet 10 for the protective cover 50, the protective cover 50
The upper end of side towards pan feeding direction, which is equipped with, is convenient for opening that the detection jig etc. in protective cover is checked and safeguarded
Vertical hinged door 51, lower end are equipped with the opening for pan feeding, and BDU to be detected is put into the detection jig from the opening.Tool
Body, the protective cover 50 includes that frame made of aluminium alloy extrusions and setting make 50 shape of protective cover between the frame
Material at a hemi-closure space is the isolation board of steel or acrylic etc..As shown in figure 4, with the cabinet 10 close to pan feeding
The one side in direction is front, and the one side far from pan feeding direction is the back side, and the top surface of the cabinet 10 is arranged in the protective cover 50
Upper and protective cover 50 the back side is aligned with the back side of cabinet 10, and the front of the protective cover 50 is relative to the just inward-facing of cabinet 10
Shorten a distance, this distance is preferably sized to the size of a plummer 211 to ensure that BDU product can be by vertically
It is placed on plummer 211, the front generation of BDU and protective cover 50 in placement process is avoided to interfere and influence positioning effect
Fruit.The protective cover 50 can will test jig and exterior space completely cuts off, and the foreign matter of the external overwhelming majority is effectively avoided to fall into
On BDU to be measured, detection effect is influenced, meanwhile, also function to the effect of protection staff.Further, the top of the protective cover 50
Inside is additionally provided with supporter 52, and the test equipment 30 is placed on the supporter 52 to connect with detection mould group 213；Institute
The top outer for stating protective cover 50 is additionally provided with alarm lamp 80, and the alarm lamp 80 is electrically connected with detection jig, when detection jig
When there is operation irregularity, alarm lamp 80 can issue alarm prompt person and check processing in time.
Pendulum material frame 60 is additionally provided on the cabinet 10, the pendulum material frame 60 is arranged along the length direction of the cabinet 10 in institute
The pan feeding side of cabinet 10 is stated, and pendulum material frame 60 is arranged outside the protective cover 50；It is additionally provided on the cabinet 10 bad
Product frame 70, the defective products frame 70 are arranged outside the protective cover 50.The pendulum material frame 60 is convenient for for keeping in BDU to be measured
Personnel's operation, improves production efficiency, and the defective products frame 70 is independent by defective products for keeping in the underproof BDU of testing result
It places, is distinguished convenient for personnel.Specifically, in conjunction with shown in Fig. 1 and Fig. 4, the structure of pendulum the material frame 60 and defective products frame 70
It is roughly the same, it is to include one block of supporting plate and be arranged on supporting plate for the baffle that avoids BDU from falling, it is simple and reliable for structure.
As shown in Figure 1, the operating display 40 is touch display screen, operation sense is optimized, operating display 40 also wraps
Include storage module and read module, storage module be used for the parameter of the BDU for a certain model being arranged and its critical field into
Row storage can also be used directly so as to subsequent without secondary setting again, be also used for the testing result storage for the BDU that will be tested
Get up, is convenient for subsequent quality tracing, read module is for coming out the reading data in storage module.
Specific embodiment is applied in the present invention, and principle and implementation of the present invention are described, above embodiments
Explanation be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art,
According to the thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion in this specification
Appearance should not be construed as limiting the invention.
Claims (10)
1. a kind of BDU automatic test machine, which is characterized in that including cabinet, the detection jig being arranged on the cabinet, with it is described
Detect the test equipment and the operating display being electrically connected with the test equipment that jig is electrically connected, the detection jig
First including the plummer, the driving plummer movement that are slidably connected on the cabinet drives mould group, is vertically arranged in
Guide rod on the cabinet is set in the detection mould group to move up and down on the guide rod relative to the plummer and driving institute
State detection mould group movement second driving mould group, the plummer and the detection mould group cooperation, the test equipment with it is described
Mould group is detected to be electrically connected.
2. BDU automatic test machine according to claim 1, which is characterized in that the detection jig further includes bottom plate, described
Bottom plate is fixedly connected on the cabinet, and the plummer is slidably connected on the bottom plate, and the guide rod is arranged at the bottom
On plate.
3. BDU automatic test machine according to claim 2, which is characterized in that the first driving mould group is is fixed on
The slider cylinder on bottom plate is stated, the plummer is fixed in the slider cylinder.
4. BDU automatic test machine according to claim 1, which is characterized in that the detection mould group include a fixed plate and
Multiple probes in the fixed plate are set, and multiple probes are corresponded with point to be detected on BDU, multiple spies
Needle is connect with the test equipment.
5. BDU automatic test machine according to claim 6, which is characterized in that the second driving mould group includes being fixed on
On the guide rod and it is located at the cylinder fixed plate top plate far from the plummer side and be fixed on the top plate, institute
Top plate is stated equipped with a through-hole, the piston rod of the cylinder passes through the through-hole and connect with the fixed plate.
6. BDU automatic test machine according to claim 1, which is characterized in that the detection jig includes current sensor
Detect jig, pressure drop conductive detection jig and pressure-resistant Insulation test jig, length direction of three detection jigs along the cabinet
It sets gradually.
7. BDU automatic test machine according to claim 1, which is characterized in that be additionally provided with one on the cabinet and be used for institute
It states detection jig and is enclosed in interior protective cover, in a rectangular parallelepiped shape, the width of the protective cover is than the cabinet for the protective cover
Width is small, and the protective cover is equipped with vertical hinged door towards the side upper end in pan feeding direction, and lower end is equipped with opening, BDU quilt to be detected
It is put into the detection jig from the opening.
8. BDU automatic test machine according to claim 7, which is characterized in that pendulum material frame is additionally provided on the cabinet, it is described
The pan feeding side of the cabinet is arranged in along the length direction of the cabinet for pendulum material frame and pendulum material frame is arranged in the protection
Cover is outer.
9. BDU automatic test machine according to claim 7, which is characterized in that be additionally provided with defective products frame, institute on the cabinet
Defective products frame is stated to be arranged outside the protective cover.
10. BDU automatic test machine according to claim 1, which is characterized in that the operating display is to touch display
Screen, further includes storage module and read module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811113339.7A CN109164324A (en) | 2018-09-25 | 2018-09-25 | BDU automatic test machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811113339.7A CN109164324A (en) | 2018-09-25 | 2018-09-25 | BDU automatic test machine |
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| Publication Number | Publication Date |
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| CN109164324A true CN109164324A (en) | 2019-01-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811113339.7A Pending CN109164324A (en) | 2018-09-25 | 2018-09-25 | BDU automatic test machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110082625A (en) * | 2019-05-24 | 2019-08-02 | 深圳市鸿圆机械电器设备有限公司 | Probe automatic checkout equipment and its detection method |
| CN110988727A (en) * | 2019-12-19 | 2020-04-10 | 江西优特汽车技术有限公司 | Low-cost multifunctional universal BDU detection tool system |
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| CN107618462A (en) * | 2017-10-18 | 2018-01-23 | 广东易电能源科技有限公司 | A kind of high voltage distribution box and flexible car with pressure differential detection circuit |
| CN207404775U (en) * | 2017-10-24 | 2018-05-25 | 浙江深科自动化科技有限公司 | A kind of jacking system of miniature circuit breaker automatic assembling stage apparatus |
| CN209247901U (en) * | 2018-09-25 | 2019-08-13 | 昆山光科鑫激光科技有限公司 | BDU automatic test machine |
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| CN110082625A (en) * | 2019-05-24 | 2019-08-02 | 深圳市鸿圆机械电器设备有限公司 | Probe automatic checkout equipment and its detection method |
| CN110988727A (en) * | 2019-12-19 | 2020-04-10 | 江西优特汽车技术有限公司 | Low-cost multifunctional universal BDU detection tool system |
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