CN219777882U - Power battery testing device with variable probe spacing - Google Patents
Power battery testing device with variable probe spacing Download PDFInfo
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- CN219777882U CN219777882U CN202320626559.XU CN202320626559U CN219777882U CN 219777882 U CN219777882 U CN 219777882U CN 202320626559 U CN202320626559 U CN 202320626559U CN 219777882 U CN219777882 U CN 219777882U
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- 239000000523 sample Substances 0.000 title claims abstract description 177
- 238000012360 testing method Methods 0.000 title claims abstract description 45
- 230000000712 assembly Effects 0.000 claims abstract description 4
- 238000000429 assembly Methods 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims description 15
- 230000001174 ascending effect Effects 0.000 claims description 11
- 230000006698 induction Effects 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 description 10
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 5
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- 238000012986 modification Methods 0.000 description 1
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- 238000011056 performance test Methods 0.000 description 1
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Abstract
The utility model provides a power battery testing device with a variable probe spacing, which belongs to the technical field of battery testing equipment, and comprises: a bracket; the Y-axis mechanical arm is arranged at the top end of the bracket; the linear guide rail is arranged at the top end of the bracket and is parallel to the Y-axis mechanical arm; one end of the cross beam is connected with the movable end of the Y-axis mechanical arm, and the other end of the cross beam is connected with the linear guide rail in a sliding manner; the probe plate dragging mechanism is vertically arranged on the side edge of the cross beam; an X-axis mechanical arm horizontally arranged at the top end of the cross beam; the probe dragging mechanism is vertically arranged on the side edge of the cross beam and is connected with the moving end of the X-axis mechanical arm; the pair of support guide rails are arranged at the top end of the support in parallel and are parallel to the linear guide rails; and two ends of the probe board assemblies are respectively connected with the support guide rail in a sliding way. The utility model has the advantages that: the compatibility of the power battery testing device is greatly improved.
Description
Technical Field
The utility model relates to the technical field of battery testing equipment, in particular to a power battery testing device with a variable probe spacing.
Background
The power battery is assembled by a plurality of battery modules, the battery modules are assembled by a plurality of battery cores, and the assembled battery modules need to be subjected to performance test, are qualified in test and acquire the battery modules with various parameters, and then the next power battery assembly procedure is carried out. The battery module test is an important component of the power battery production, and relates to the product quality and the product safety of the whole power battery.
For testing of battery modules, conventionally, one fixed testing device is used for one type of battery module, and the testing device cannot be used for different types of battery modules in common; with the rapid development of the lithium battery industry, the lithium battery is updated quickly, and the testing equipment for the lithium battery is rapidly eliminated due to the non-universality of the testing equipment, so that the testing cost of the power battery is increased.
Therefore, how to provide a power battery testing device with a variable probe pitch, so as to improve the compatibility of the power battery testing device, is a technical problem to be solved urgently.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a power battery testing device with a variable probe distance, so that the compatibility of the power battery testing device is improved.
The utility model is realized in the following way: a probe pitch variable power cell testing device, comprising:
a bracket;
the Y-axis mechanical arm is arranged at the top end of the bracket;
the linear guide rail is arranged at the top end of the bracket and is parallel to the Y-axis mechanical arm;
one end of the cross beam is connected with the movable end of the Y-axis mechanical arm, and the other end of the cross beam is connected with the linear guide rail in a sliding manner;
the probe plate dragging mechanism is vertically arranged on the side edge of the cross beam;
an X-axis mechanical arm horizontally arranged at the top end of the cross beam;
the probe dragging mechanism is vertically arranged on the side edge of the cross beam and is connected with the moving end of the X-axis mechanical arm;
the pair of support guide rails are arranged at the top end of the support in parallel and are parallel to the linear guide rails;
and two ends of the probe board assemblies are respectively connected with the support guide rail in a sliding way.
Further, the probe card dragging mechanism includes:
the first mounting plate is vertically arranged on the side edge of the cross beam;
the positioning cylinder is arranged on the first mounting plate, and the power output end faces downwards;
the top end of the positioning block is connected with the power output end of the positioning cylinder, and the bottom end of the positioning block is matched with the probe board assembly;
and the shading sheet is arranged on the side edge of the first mounting plate and matched with the probe board assembly.
Further, the probe dragging mechanism includes:
the second mounting plate is connected with the moving end of the X-axis mechanical arm;
the lifting cylinder is arranged on the second mounting plate, and the power output end faces downwards;
the transverse unlocking module is connected with the power output end of the lifting cylinder;
the vertical unlocking module is connected with the power output end of the lifting cylinder;
and the position sensing sensor group is arranged on the vertical unlocking module.
Further, the lateral unlocking module includes:
the transverse unlocking cylinder is connected with the power output end of the lifting cylinder;
and the transverse unlocking pressing block is connected with the power output end of the transverse unlocking cylinder.
Further, the vertical unlocking module includes:
the vertical unlocking cylinder is connected with the power output end of the lifting cylinder;
the vertical unlocking pressing block is connected with the power output end of the vertical unlocking cylinder;
and the positioning pin is arranged at the bottom end of the vertical unlocking pressing block.
Further, the position sensing sensor group includes:
the probe vertical sensor is arranged on the vertical unlocking module, and the induction direction is downward;
and the probe level sensor is arranged on the vertical unlocking module, and the sensing direction is horizontal.
Further, the probe card assembly includes:
the top end of the third mounting plate is symmetrically provided with two first positioning guide sleeves and two guide rail mounting plates; the third mounting plate is mounted on the support guide rail through the guide rail mounting plate;
the two photoelectric sensors are respectively arranged on one guide rail mounting plate;
the probe ascends to position the rack and is horizontally arranged on the side surface of the third mounting plate;
the probe descending positioning rack is horizontally arranged on the side surface of the third mounting plate and is positioned below the probe ascending positioning rack;
the probe moving guide rail is horizontally arranged on the side surface of the third mounting plate and is positioned below the probe descending positioning rack;
and the probe modules are in sliding connection with the probe moving guide rail and meshed with the probe ascending positioning rack or the probe descending positioning rack.
Further, the first positioning guide sleeve is matched with the probe plate dragging mechanism.
Further, the photoelectric sensor is matched with a probe card dragging mechanism.
Further, the probe module includes:
a connecting rod;
one side of the lifting guide block is in sliding connection with the connecting rod in the vertical direction, and the other side of the lifting guide block is in sliding connection with the probe moving guide rail in the horizontal direction;
the stretching spring is arranged on the connecting rod, the top end of the stretching spring is connected with the bottom end of the lifting guide block, and the bottom end of the stretching spring is connected with the bottom end of the connecting rod;
the probe mounting seat is arranged at the bottom end of the connecting rod;
two probes penetrate through the probe mounting seat from top to bottom;
the second positioning guide sleeve is arranged at the top end of the connecting rod;
two tooth block guide posts horizontally penetrate through the upper part of the connecting rod;
a tooth block pressing block connected with the outer end of the tooth block guide post;
the positioning locking tooth block is connected with the inner end of the tooth block guide post, and the top end of the positioning locking tooth block is meshed with the probe ascending positioning rack or the probe descending positioning rack;
and the spring plunger sequentially penetrates through the positioning locking tooth block and the connecting rod to be abutted with the tooth block pressing block.
The utility model has the advantages that:
through setting up Y axle robotic arm, linear guide, crossbeam and X axle robotic arm on the support, constitute an X axle Y axle and remove gantry mechanism, and the probe board subassembly passes through the support guide and locates on the support, Y axle robotic arm passes through crossbeam and removes probe board dragging mechanism, with carry out the displacement of Y axle to the probe board subassembly, X axle robotic arm carries out the displacement of X axle to the probe module through probe dragging mechanism, and then nimble adjustment probe module is in the position of X axle and Y axle, and the probe module passes through the lift guide block, tension spring, location locking tooth piece and probe rise positioning rack, probe decline positioning rack, probe dragging mechanism's cooperation, can go up and down to the probe, adjust the operating condition of probe, and then match the battery module of different models, the very big compatibility of power battery testing device has been promoted finally, very big reduction testing cost.
Drawings
The utility model will be further described with reference to examples of embodiments with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of a power battery testing device with a variable probe pitch according to the present utility model.
FIG. 2 is a schematic diagram of the structure of the probe card dragging mechanism of the present utility model.
Fig. 3 is a schematic structural view of the probe dragging mechanism of the present utility model.
FIG. 4 is a schematic view of the structure of the probe card assembly of the present utility model.
FIG. 5 is a schematic diagram of a probe module according to the present utility model.
FIG. 6 is a second schematic diagram of the probe module according to the present utility model.
Marking:
100-a power battery testing device with a variable probe distance, wherein the power battery testing device comprises a 1-support, a 2-Y-axis mechanical arm, a 3-linear guide rail, a 4-cross beam, a 5-probe plate dragging mechanism, a 6-X-axis mechanical arm, a 7-probe dragging mechanism, an 8-support guide rail, a 9-probe plate assembly, a 51-first mounting plate, a 52-positioning cylinder, a 53-positioning block, a 54-shading sheet, a 71-second mounting plate, a 72-lifting cylinder, a 73-transverse unlocking module, a 74-vertical unlocking module, a 75-position sensing sensor group, a 731-transverse unlocking cylinder, 732-transverse unlocking press block, 741-vertical unlocking cylinder, 742-vertical unlocking press block, 743-positioning pin, 751-probe vertical sensor, 752-probe horizontal sensor, 91-third mounting plate, 92-photoelectric sensor, 93-probe lifting positioning rack, 94-probe descending positioning rack, 95-probe moving guide rail, 96-probe module, 961-first positioning guide sleeve, 912-mounting plate, 961-connecting rod 962-lifting guide block, 3-stretching spring block, 4-vertical unlocking press block, 742-vertical positioning press block, 743-positioning press block 968-positioning guide block, and positioning guide block 966-tooth positioning guide block 966-positioning guide block.
Detailed Description
The embodiment of the utility model solves the technical problems that test equipment cannot be used commonly for battery modules of different types, and lithium batteries are updated quickly, the test equipment for the lithium batteries is rapidly eliminated, the test cost of the power batteries is increased, and the compatibility of the power battery test device is greatly improved by providing the power battery test device 100 with the variable probe spacing.
The technical scheme in the embodiment of the utility model aims to solve the problems, and the overall thought is as follows: through setting up Y axle robotic arm 2, linear guide 3, crossbeam 4, X axle robotic arm 6, probe board dragging mechanism 5, probe dragging mechanism 7 on support 1 to nimble adjustment probe module 96 is in the position of X axle and Y axle, and probe module 96 is through the cooperation of lift guide piece 962, extension spring 963, location locking tooth piece 9691 and probe rising location rack 93, probe decline location rack 94, probe dragging mechanism 7, can go up and down to probe 965, and then promotes the compatibility of power battery testing arrangement 100.
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 6, a power battery testing apparatus 100 with a variable probe pitch according to a preferred embodiment of the present utility model includes:
a rack 1 for carrying the test device 100;
a Y-axis mechanical arm 2 arranged at the top end of the bracket 1 and used for providing power for Y-axis displacement of the probe board assembly 9;
the linear guide rail 3 is arranged at the top end of the bracket 1 and is parallel to the Y-axis mechanical arm 2;
one end of the cross beam 4 is connected with the moving end of the Y-axis mechanical arm 2, and the other end of the cross beam is connected with the linear guide rail 3 in a sliding manner and is used for linking the probe plate dragging mechanism 5 and the X-axis mechanical arm 6 to carry out Y-axis displacement;
a probe board dragging mechanism 5 vertically arranged on the side edge of the beam 4 and used for adjusting the Y-axis position of the probe board assembly 9;
an X-axis mechanical arm 6 horizontally disposed at the top end of the beam 4, for providing power for X-axis displacement of the probe dragging mechanism 7;
the probe dragging mechanism 7 is vertically arranged on the side edge of the cross beam 4, is connected with the moving end of the X-axis mechanical arm 6 and is used for adjusting the X-axis position of the probe module 96;
a pair of support rails 8, which are arranged in parallel at the top end of the support 1 and parallel to the linear guide rail 3, and are used for limiting sliding of the probe board assembly 9;
and two ends of the probe board assemblies 9 are respectively connected with the support guide rails 8 in a sliding manner.
The probe card dragging mechanism 5 includes:
a first mounting plate 51, vertically arranged at the side of the beam 4, for carrying the probe board dragging mechanism 5;
a positioning cylinder 52 arranged on the first mounting plate 51 with the power output end facing downwards;
a positioning block 53, the top end of which is connected with the power output end of the positioning cylinder 52, and the bottom end of which is matched with the first positioning guide sleeve 911 of the probe board assembly 9;
a light shielding sheet 54 is provided on the side of the first mounting plate 51 and matches with the photoelectric sensor 92 of the probe card assembly 9.
The probe drag mechanism 7 includes:
a second mounting plate 71, connected to the moving end of the X-axis mechanical arm 6, for carrying the probe dragging mechanism 7;
a lifting cylinder 72 disposed on the second mounting plate 71, with the power output end facing downward;
a transverse unlocking module 73 connected with the power output end of the lifting cylinder 72;
a vertical unlocking module 74 connected with the power output end of the lifting cylinder 72;
a position sensor group 75 is disposed on the vertical unlocking module 74.
The lateral unlocking module 73 includes:
a horizontal unlocking cylinder 731 connected with the power output end of the lifting cylinder 72;
and the transverse unlocking pressing block 732 is connected with the power output end of the transverse unlocking cylinder 731 and is used for horizontally pushing the positioning locking tooth block 9691.
The vertical unlocking module 74 includes:
a vertical unlocking cylinder 741 connected with the power output end of the lifting cylinder 72;
a vertical unlocking pressing block 742, connected to the power output end of the vertical unlocking cylinder 741, for pushing the positioning locking gear 9691 downward, so as to drive the probe 965 to descend;
a positioning pin 743 is disposed at the bottom end of the vertical unlocking block 742.
The position sensing sensor group 75 includes:
a probe vertical sensor 751 provided on the vertical unlocking module 74 with a sensing direction facing downward;
a probe level sensor 752 is provided on the vertical unlocking module 74 to sense the direction level.
The probe card assembly 9 includes:
two first positioning guide sleeves 911 and two guide rail mounting plates 912 are symmetrically arranged at the top end of the third mounting plate 91; the third mounting plate 91 is mounted on the bracket rail 8 through a rail mounting plate 912;
two photoelectric sensors 92 respectively disposed on one of the guide rail mounting plates 912 and matched with the light shielding plate 54;
a probe ascending positioning rack 93 horizontally disposed on the side surface of the third mounting plate 91;
a probe descending positioning rack 94 horizontally arranged on the side surface of the third mounting plate 91 and positioned below the probe ascending positioning rack 93; the probe ascending positioning racks 93 and the probe descending positioning racks 94 are staggered;
a probe moving guide rail 95 horizontally disposed on a side surface of the third mounting plate 91 and positioned below the probe descending positioning rack 94;
and a plurality of probe modules 96 slidably connected to the probe moving rail 95 and engaged with the probe ascending positioning racks 93 or the probe descending positioning racks 94.
The first positioning guide sleeve 911 is matched with the probe card dragging mechanism 5.
The photosensor 92 is matched with the probe card dragging mechanism 5.
The probe module 96 includes:
a connecting rod 961;
a lifting guide piece 962, one side of which is slidably connected to the connecting rod 961 in the vertical direction and the other side of which is slidably connected to the probe moving rail 95 in the horizontal direction;
a tension spring 963 provided on the connecting rod 961, the top end thereof being connected to the bottom end of the elevation guide piece 962, the bottom end thereof being connected to the bottom end of the connecting rod 961;
a probe mounting base 964 disposed at the bottom end of the connecting rod 961;
two probes 965 pass through the probe mount 964 from top to bottom;
a second positioning guide sleeve 966, which is disposed at the top end of the connecting rod 961 and is matched with the transverse unlocking block 742;
two tooth block guide posts 967 horizontally penetrating the upper part of the connecting rod 961;
a tooth block pressing block 968 connected with the outer end of the tooth block guide pillar 967;
a positioning locking tooth block 9691 connected with the inner end of the tooth block guide pillar 967, and the top end is meshed with the probe ascending positioning rack 93 or the probe descending positioning rack 94;
a spring plunger 9692 sequentially passes through the positioning locking tooth block 9691 and the connecting rod 961 to be abutted with the tooth block pressing block 968;
when the probe 965 is in a non-working state, the positioning locking gear block 9691 is meshed with the probe lifting positioning rack 93; when the probe 965 needs to be adjusted to be in a working state, the connecting rod 961 is pressed down to compress the tension spring 963, the tooth block pressing block 968 is pushed inwards, and the positioning locking tooth block 9691 is further linked to displace inwards, so that the positioning locking tooth block is meshed with the probe descending positioning rack 94, and clamping is performed.
The working principle of the utility model is as follows:
the Y-axis mechanical arm 2 is linked with the probe card dragging mechanism 5 to perform Y-axis displacement until the photoelectric sensor 92 senses the light shielding sheet 54, the positioning block 53 is driven by the positioning cylinder 52 of the probe card dragging mechanism 5 to be inserted into the first positioning guide sleeve 911, and then the Y-axis mechanical arm 2 is linked with the probe card assembly 9 to perform Y-axis displacement; the probe dragging mechanism 7 pushes down the probe module 96 through the vertical unlocking module 74 so as to separate the positioning locking gear 9691 from the probe descending positioning rack 94, then inserts the second positioning guide sleeve 966 through the horizontal unlocking module 73, and performs X-axis displacement on the probe moving guide rail 95 through the X-axis mechanical arm 6 linkage probe module 96.
In summary, the utility model has the advantages that:
through setting up Y axle robotic arm, linear guide, crossbeam and X axle robotic arm on the support, constitute an X axle Y axle and remove gantry mechanism, and the probe board subassembly passes through the support guide and locates on the support, Y axle robotic arm passes through crossbeam and removes probe board dragging mechanism, with carry out the displacement of Y axle to the probe board subassembly, X axle robotic arm carries out the displacement of X axle to the probe module through probe dragging mechanism, and then nimble adjustment probe module is in the position of X axle and Y axle, and the probe module passes through the lift guide block, tension spring, location locking tooth piece and probe rise positioning rack, probe decline positioning rack, probe dragging mechanism's cooperation, can go up and down to the probe, adjust the operating condition of probe, and then match the battery module of different models, the very big compatibility of power battery testing device has been promoted finally, very big reduction testing cost.
While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that the specific embodiments described are illustrative only and not intended to limit the scope of the utility model, and that equivalent modifications and variations of the utility model in light of the spirit of the utility model will be covered by the claims of the present utility model.
Claims (10)
1. The utility model provides a probe interval changeable power battery testing arrangement which characterized in that: comprising the following steps:
a bracket;
the Y-axis mechanical arm is arranged at the top end of the bracket;
the linear guide rail is arranged at the top end of the bracket and is parallel to the Y-axis mechanical arm;
one end of the cross beam is connected with the movable end of the Y-axis mechanical arm, and the other end of the cross beam is connected with the linear guide rail in a sliding manner;
the probe plate dragging mechanism is vertically arranged on the side edge of the cross beam;
an X-axis mechanical arm horizontally arranged at the top end of the cross beam;
the probe dragging mechanism is vertically arranged on the side edge of the cross beam and is connected with the moving end of the X-axis mechanical arm;
the pair of support guide rails are arranged at the top end of the support in parallel and are parallel to the linear guide rails;
and two ends of the probe board assemblies are respectively connected with the support guide rail in a sliding way.
2. A variable probe spacing power cell testing apparatus as defined in claim 1, wherein: the probe card dragging mechanism includes:
the first mounting plate is vertically arranged on the side edge of the cross beam;
the positioning cylinder is arranged on the first mounting plate, and the power output end faces downwards;
the top end of the positioning block is connected with the power output end of the positioning cylinder, and the bottom end of the positioning block is matched with the probe board assembly;
and the shading sheet is arranged on the side edge of the first mounting plate and matched with the probe board assembly.
3. A variable probe spacing power cell testing apparatus as defined in claim 1, wherein: the probe dragging mechanism includes:
the second mounting plate is connected with the moving end of the X-axis mechanical arm;
the lifting cylinder is arranged on the second mounting plate, and the power output end faces downwards;
the transverse unlocking module is connected with the power output end of the lifting cylinder;
the vertical unlocking module is connected with the power output end of the lifting cylinder;
and the position sensing sensor group is arranged on the vertical unlocking module.
4. A variable probe spacing power cell testing apparatus as claimed in claim 3, wherein: the transverse unlocking module comprises:
the transverse unlocking cylinder is connected with the power output end of the lifting cylinder;
and the transverse unlocking pressing block is connected with the power output end of the transverse unlocking cylinder.
5. A variable probe spacing power cell testing apparatus as claimed in claim 3, wherein: the vertical unlocking module comprises:
the vertical unlocking cylinder is connected with the power output end of the lifting cylinder;
the vertical unlocking pressing block is connected with the power output end of the vertical unlocking cylinder;
and the positioning pin is arranged at the bottom end of the vertical unlocking pressing block.
6. A variable probe spacing power cell testing apparatus as claimed in claim 3, wherein: the position sensing sensor group includes:
the probe vertical sensor is arranged on the vertical unlocking module, and the induction direction is downward;
and the probe level sensor is arranged on the vertical unlocking module, and the sensing direction is horizontal.
7. A variable probe spacing power cell testing apparatus as defined in claim 1, wherein: the probe card assembly includes:
the top end of the third mounting plate is symmetrically provided with two first positioning guide sleeves and two guide rail mounting plates; the third mounting plate is mounted on the support guide rail through the guide rail mounting plate;
the two photoelectric sensors are respectively arranged on one guide rail mounting plate;
the probe ascends to position the rack and is horizontally arranged on the side surface of the third mounting plate;
the probe descending positioning rack is horizontally arranged on the side surface of the third mounting plate and is positioned below the probe ascending positioning rack;
the probe moving guide rail is horizontally arranged on the side surface of the third mounting plate and is positioned below the probe descending positioning rack;
and the probe modules are in sliding connection with the probe moving guide rail and meshed with the probe ascending positioning rack or the probe descending positioning rack.
8. The variable probe spacing power cell testing device of claim 7, wherein: the first positioning guide sleeve is matched with the probe plate dragging mechanism.
9. The variable probe spacing power cell testing device of claim 7, wherein: the photoelectric sensor is matched with the probe board dragging mechanism.
10. The variable probe spacing power cell testing device of claim 7, wherein: the probe module includes:
a connecting rod;
one side of the lifting guide block is in sliding connection with the connecting rod in the vertical direction, and the other side of the lifting guide block is in sliding connection with the probe moving guide rail in the horizontal direction;
the stretching spring is arranged on the connecting rod, the top end of the stretching spring is connected with the bottom end of the lifting guide block, and the bottom end of the stretching spring is connected with the bottom end of the connecting rod;
the probe mounting seat is arranged at the bottom end of the connecting rod;
two probes penetrate through the probe mounting seat from top to bottom;
the second positioning guide sleeve is arranged at the top end of the connecting rod;
two tooth block guide posts horizontally penetrate through the upper part of the connecting rod;
a tooth block pressing block connected with the outer end of the tooth block guide post;
the positioning locking tooth block is connected with the inner end of the tooth block guide post, and the top end of the positioning locking tooth block is meshed with the probe ascending positioning rack or the probe descending positioning rack;
and the spring plunger sequentially penetrates through the positioning locking tooth block and the connecting rod to be abutted with the tooth block pressing block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320626559.XU CN219777882U (en) | 2023-03-27 | 2023-03-27 | Power battery testing device with variable probe spacing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320626559.XU CN219777882U (en) | 2023-03-27 | 2023-03-27 | Power battery testing device with variable probe spacing |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219777882U true CN219777882U (en) | 2023-09-29 |
Family
ID=88105415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320626559.XU Active CN219777882U (en) | 2023-03-27 | 2023-03-27 | Power battery testing device with variable probe spacing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219777882U (en) |
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2023
- 2023-03-27 CN CN202320626559.XU patent/CN219777882U/en active Active
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