CN220671493U - Test fixture and test equipment - Google Patents
Test fixture and test equipment Download PDFInfo
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- CN220671493U CN220671493U CN202322241333.0U CN202322241333U CN220671493U CN 220671493 U CN220671493 U CN 220671493U CN 202322241333 U CN202322241333 U CN 202322241333U CN 220671493 U CN220671493 U CN 220671493U
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- copper bar
- fixing portion
- connection
- connecting end
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- 238000012360 testing method Methods 0.000 title claims abstract description 126
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 72
- 229910052802 copper Inorganic materials 0.000 claims description 72
- 239000010949 copper Substances 0.000 claims description 72
- 239000012212 insulator Substances 0.000 claims description 12
- 125000006850 spacer group Chemical group 0.000 claims description 8
- 238000009434 installation Methods 0.000 abstract description 12
- 238000005192 partition Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 21
- 230000006978 adaptation Effects 0.000 description 15
- 230000002349 favourable effect Effects 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000007747 plating Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The embodiment of the application provides a test fixture and test equipment, include: the installation partition board is provided with a plurality of fixed positions; the connecting assembly is configured to be connected with the fixing position and comprises a first connecting piece and a second connecting piece which are distributed at intervals, the first connecting piece is configured with a first connecting end and a second connecting end, and the second connecting piece is configured with a third connecting end and a fourth connecting end; the test sample is configured on the mounting surface and is respectively connected with the first connecting end and the fourth connecting end. The first connecting piece and the second connecting piece of the connecting assembly are connected to the fixing positions of the proper positions, the test sample is arranged behind the mounting surface and can be respectively connected with the first connecting end of the first connecting piece and the fourth connecting end of the second connecting piece, the test wire harness can be prevented from being directly connected with the test sample, the contact resistance of the bolt is prevented from being increased due to loose stress, the structure of the test sample is heated and overtemperature is prevented from being caused, and the test is stopped.
Description
Technical Field
The application relates to the technical field of battery testing, in particular to a testing tool and testing equipment.
Background
The electric automobile is rapidly developed as a new energy vehicle with energy conservation and environmental protection, and the lithium ion battery is one of the power sources which is attractive because of the advantages of high energy density, long cycle life, green and pollution-free. Improving the safety of lithium ion batteries has been the main direction of power battery research.
At present, a plurality of problems often occur in the test of the battery core, such as poor contact, large resistance is effectively caused by the contact area between two terminals, and voltage reduction and heating phenomena occur in long-term heavy-current charge and discharge.
Disclosure of Invention
An aim of the embodiment of the application is to provide a test fixture and test equipment, when can avoiding the test pencil to directly be connected with test sample, appear because of the atress is not hard up, and cause the contact resistance increase of bolt department, lead to test sample's structure to generate heat the overtemperature, test suspension.
In a first aspect, an embodiment of the present application provides a test fixture, including: a mounting bulkhead configured with a mounting face configured with a plurality of securing bits; the connecting assembly is configured to be connected with the fixed position and comprises a first connecting piece and a second connecting piece which are distributed at intervals, wherein the first connecting piece is configured with a first connecting end and a second connecting end, and the second connecting piece is configured with a third connecting end and a fourth connecting end; the test sample is configured on the mounting surface and is respectively connected with the first connecting end and the fourth connecting end.
In the process of the realization, a plurality of fixed positions are configured on the installation partition plate, the first connecting piece and the second connecting piece of the connecting assembly are connected to the fixed positions at proper positions, the test sample is configured behind the installation surface and can be respectively connected with the first connecting end of the first connecting piece and the fourth connecting end of the second connecting piece, the test wire harness can be prevented from being directly connected with the test sample, the contact resistance at the bolt position is prevented from being increased due to loose stress, the structure of the test sample is heated and overtemperature is caused, and the test is stopped.
In some embodiments, the first connecting piece includes a first copper bar and a first insulating piece, the first copper bar is disposed on a side of the first insulating piece facing away from the mounting surface, and a part of the first insulating piece is disposed on the fixing position.
In the implementation process, the first copper bar is configured on the first insulating piece, so that after the first copper bar is used for being connected with a test sample, the insulativity between the first copper bar and the installation partition board can be ensured, risks such as short circuit are avoided, and the safety and reliability of wire harness connection in the test process can be improved.
In some embodiments, the first insulating member includes a first fixing portion and a first adapting portion, the first fixing portion is connected with the first adapting portion, one side of the first fixing portion facing away from the first adapting portion is configured with the first copper bar, a cross-sectional dimension of the first fixing portion is greater than a cross-sectional dimension of the fixing portion, and the first adapting portion is adapted to the fixing portion. Through with first fixed part adaptation between first adaptation portion and the first copper bar, after first adaptation portion adaptation is in the fixed position, first copper bar can not only insulate through first fixed part and first adaptation portion and installation baffle, and first fixed part also can form the butt with the fixed position, ensures to be fixed in first copper bar on the installation baffle, is favorable to the test sample.
In some embodiments, the first copper bar has a cross-sectional dimension that is greater than a cross-sectional dimension of the first insulator. The connection of the test sample and the first copper bar is facilitated, and the contact between the connecting part between the test sample and the first copper bar and the first insulating piece is avoided.
In some embodiments, the second connecting piece includes a second copper bar and a second insulating piece, the second copper bar is disposed on a side of the second insulating piece facing away from the mounting surface, and a part of the second insulating piece is disposed on the fixing position.
In the process of the implementation, the second copper bar is configured on the second insulating piece, so that after the second copper bar is used for being connected with the test sample, the insulativity between the second copper bar and the installation partition board can be ensured, risks such as short circuit are avoided, and the safety and reliability of wire harness connection in the test process can be improved.
In some embodiments, the second insulating member includes a second fixing portion and a second adapting portion, the second fixing portion is connected with the second adapting portion, one side of the second fixing portion facing away from the second adapting portion is configured with the second copper bar, a cross-sectional dimension of the second fixing portion is greater than a cross-sectional dimension of the fixing portion, and the second adapting portion is adapted to the fixing portion. Through with second fixed part adaptation between second adaptation portion and the second copper bar, after the second adaptation portion adaptation is in the fixed position, the second copper bar not only can insulate through second fixed part and second adaptation portion and installation baffle, and the second fixed part also can form the butt with the fixed position, ensures to be fixed in the second copper bar on the installation baffle, is favorable to the test sample.
In some embodiments, the second copper bar has a cross-sectional dimension that is greater than a cross-sectional dimension of the second insulator. The connection of the test sample and the second copper bar is facilitated, and the contact between the connecting part between the test sample and the second copper bar and the second insulating piece is avoided.
In some embodiments, the test fixture includes a connection copper bar connected with the test sample, the first connection end, and the fourth connection end, respectively. The test sample and the connecting component are connected through the connecting copper bars, so that the safety and reliability in the test process can be improved, and the stress looseness of the connecting part can be avoided.
In some embodiments, the mounting spacer includes an insulating spacer that is in contact with the test sample and the connection assembly, respectively.
In a second aspect, the present application also provides a test apparatus comprising: a test cabinet; and the second connecting end and the third connecting end of the test tool are respectively connected with the test cabinet.
In the process of the implementation, the test cabinet can be connected with the second connecting end and the third connecting end of the test tool through the test wire harness, so that after the test sample in the test tool is respectively connected with the first connecting end and the fourth connecting end, an electrified loop can be realized, the safety and reliability of the connection in the test process are improved, the stress loosening at the connecting position is avoided, and the test of the test sample is facilitated.
Additional features and advantages of the disclosure will be set forth in the description which follows, or in part will be obvious from the description, or may be learned by practice of the techniques of the disclosure.
In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments of the present application will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic structural diagram of a test tool according to an embodiment of the present application;
fig. 2 is a top view of a test fixture provided in an embodiment of the present application;
FIG. 3 is a cross-sectional view of a test fixture provided in an embodiment of the present application;
fig. 4 is a schematic structural diagram of a connection assembly of a test tool according to an embodiment of the present application.
Reference numerals
100. Installing a partition board; 101. fixing the position; 200. a connection assembly; 201. a first connector; 2011. a first copper bar; 2012. a first fixing portion; 2013. a first adapting section; 2014. a first connection end; 2015. a second connection end; 202. a second connector; 2021. a second copper bar; 2022. a second fixing portion; 2023. a second adapting section; 2024. a third connection end; 2025. a fourth connection end; 300. testing the sample; 400. and connecting the copper bars.
Detailed Description
The following description of the embodiments of the present application will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all, of the embodiments of the present application. The components of the embodiments of the present application, which are generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to be within the scope of the present application.
In the present application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and the like indicate an azimuth or a positional relationship based on that shown in the drawings. These terms are used primarily to better describe the present application and its embodiments and are not intended to limit the indicated device, element or component to a particular orientation or to be constructed and operated in a particular orientation.
Also, some of the terms described above may be used to indicate other meanings in addition to orientation or positional relationships, for example, the term "upper" may also be used to indicate some sort of attachment or connection in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as appropriate.
Furthermore, the terms "mounted," "configured," "provided," "connected," and "connected" are to be construed broadly. For example, it may be a fixed connection, a removable connection, or a unitary construction; may be a mechanical connection, or a point connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements, or components. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
Furthermore, the terms "first," "second," and the like, are used primarily to distinguish between different devices, elements, or components (the particular species and configurations may be the same or different), and are not used to indicate or imply the relative importance and number of devices, elements, or components indicated. Unless otherwise indicated, the meaning of "a plurality" is two or more.
Examples
In this application, the test fixture may be used in connection with a test cabinet in which the test cabinet's own output harness is matched for its maximum capacity, typically relatively thick and stiff (e.g., 53mm cable cross section 2 Terminal aperture 8 mm), and the line length is longer (for example, more than 6m is common), the electrode lug of the battery cell is thinner, the single-sheet aperture 6mm, if the output wire harness of the test cabinet is directly connected with the battery cell, a plurality of problems can occur, such as poor contact, larger resistance caused by limited contact area between two terminals, and voltage drop and heating phenomena occurring in long-term heavy-current charge and discharge; secondly, the output wire harness of the test cabinet is suspended, and because the output wire harness is thick and hard and long, the heavy gravity of the output wire harness affects the bolts outside the connection for a long time, so that the bolts at the connection positions of the battery cell lugs are loosened, the battery cell lugs heat and are overtemperature, and even safety accidents and the like occur.
In view of this, as shown in fig. 1 to 4, in a first aspect, an embodiment of the present application provides a test fixture, including: a mounting bulkhead 100 configured with a mounting face configured with a plurality of securing bits 101; a connection assembly 200 configured to connect with the fixing location 101, wherein the connection assembly 200 includes a first connection member 201 and a second connection member 202 that are spaced apart, the first connection member 201 is configured with a first connection end 2014 and a second connection end 2015, and the second connection member 202 is configured with a third connection end 2024 and a fourth connection end 2025; and a test sample 300 disposed on the mounting surface, wherein the test sample 300 is connected to the first connection end 2014 and the fourth connection end 2025, respectively.
The mounting partition 100 is provided with a plurality of fixing locations 101, wherein the fixing locations 101 include, but are not limited to, fixing holes, and the fixing locations 101 may be distributed at intervals along a plurality of rows and a plurality of columns, and the number of the fixing locations 101 and the spacing between two adjacent fixing locations 101 may be defined according to practical situations, which is not described herein in detail.
The test sample 300 includes, but is not limited to, a square battery cell, and the tabs of the square battery cell are respectively connected to the connection assembly 200, for example, the positive electrode of the tab is connected to the first connection end 2014 by a bolt or the like, and the negative electrode of the tab is connected to the fourth connection end 2025 by a bolt or the like.
In the above implementation process, the mounting partition 100 is configured with a plurality of fixing positions 101, the first connecting piece 201 and the second connecting piece 202 of the connecting assembly 200 are both connected at the fixing positions 101 at appropriate positions, after the test sample 300 is configured on the mounting surface, the test sample 300 can be respectively connected with the first connecting end 2014 of the first connecting piece 201 and the fourth connecting end 2025 of the second connecting piece 202, so that the test harness can be prevented from being directly connected with the test sample 300, and the situation that the contact resistance at the bolt is increased due to loose stress, which causes the structure of the test sample 300 to generate heat and overheat, and the test is suspended is avoided.
As shown in fig. 4, the first connecting piece 201 includes a first copper bar 2011 and a first insulating piece, the first copper bar 2011 is disposed on a side of the first insulating piece facing away from the mounting surface, and a part of the first insulating piece is disposed on the fixing position 101, wherein the first copper bar 2011 is a copper bar protected by a plating layer with a thickness of 5 mm.
In the above implementation process, the first copper bar 2011 is configured on the first insulating member, so that after the first copper bar 2011 is used for being connected with the test sample 300, the insulation between the first copper bar 2011 and the installation partition 100 can be ensured, risks such as short circuit are avoided, and the safety and reliability of the wire harness connection in the test process can be improved.
In some embodiments, the first insulating member includes a first fixing portion 2012 and a first adapting portion 2013, the first fixing portion 2012 is connected to the first adapting portion 2013, the first copper bar 2011 is disposed on a side of the first fixing portion 2012 facing away from the first adapting portion 2013, a cross-sectional dimension of the first fixing portion 2012 is greater than a cross-sectional dimension of the fixing portion 101, the first adapting portion 2013 is adapted to the fixing portion 101, wherein the first fixing portion 2012 and the first adapting portion 2013 may be formed by an integral molding technology, and the first fixing portion 2012 and the first adapting portion 2013 are made of insulating materials.
Through with first fixed part 2012 adaptation between first adaptation portion 2013 and the first copper bar 2011, after first adaptation portion 2013 adaptation is in fixed position 101, first copper bar 2011 can not only insulate through first fixed part 2012 and first adaptation portion 2013 and installation baffle 100, and first fixed part 2012 also can form the butt with fixed position 101, ensures to be fixed in first copper bar 2011 on the installation baffle 100, is favorable to the test to test sample 300.
In some embodiments, the first copper bar 2011 has a cross-sectional dimension that is greater than a cross-sectional dimension of the first insulator. The connection between the test sample 300 and the first copper bar 2011 is facilitated, and the connection component (i.e., the connection copper bar 400) between the test sample 300 and the first copper bar 2011 is prevented from contacting the first insulating member.
Referring to fig. 4 again, the second connecting piece 202 includes a second copper bar 2021 and a second insulating piece, the second copper bar 2021 is disposed on a side of the second insulating piece facing away from the mounting surface, and a part of the second insulating piece is disposed on the fixing portion 101, wherein the second copper bar 2021 is a copper bar protected by a plating layer with a thickness of 5 mm.
In the above implementation process, the second copper bar 2021 is configured on the second insulating member, so that after the second copper bar 2021 is used for being connected with the test sample 300, the insulation between the second copper bar 2021 and the mounting partition board 100 can be ensured, risks such as short circuit are avoided, and the safety and reliability of the wire harness connection in the test process can be improved.
In some embodiments, the second insulating member includes a second fixing portion 2022 and a second adapting portion 2023, the second fixing portion 2022 is connected to the second adapting portion 2023, the second copper bar 2021 is disposed on a side of the second fixing portion 2022 facing away from the second adapting portion 2023, a cross-sectional dimension of the second fixing portion 2022 is greater than a cross-sectional dimension of the fixing portion 101, the second adapting portion 2023 is adapted to the fixing portion 101, wherein the second fixing portion 2022 and the second adapting portion 2023 may be integrally formed, and the second fixing portion 2022 and the second adapting portion 2023 are both made of insulating materials.
By fitting the second fixing portion 2022 between the second fitting portion 2023 and the second copper bar 2021, after the second fitting portion 2023 is fitted to the fixing portion 101, the second copper bar 2021 not only can be insulated from the mounting spacer 100 by the second fixing portion 2022 and the second fitting portion 2023, but also the second fixing portion 2022 can be abutted to the fixing portion 101, so that the second copper bar 2021 is ensured to be fixed on the mounting spacer 100, which is beneficial to the test of the test sample 300.
In some embodiments, the second copper bar 2021 has a cross-sectional dimension that is greater than a cross-sectional dimension of the second insulator. The connection of the test sample 300 to the second copper bar 2021 is facilitated, avoiding contact of the connection member between the test sample 300 and the second copper bar 2021 (i.e., the connection copper bar 400) with the second insulating member.
As shown in fig. 1-3, the test fixture includes a connection copper bar 400, the connection copper bar 400 is respectively connected with the test sample 300, the first connection end 2014 and the fourth connection end 2025, and the connection copper bar 400 is illustratively respectively connected with the test sample 300 and the connection assembly 200 through mounting bolts. The connection between the test sample 300 and the connection assembly 200 is realized by connecting the copper bars 400, so that the safety and reliability in the test process can be improved, and the stress looseness of the connection part can be avoided.
In some embodiments, the mounting spacer 100 comprises an insulating spacer that is in contact with the test sample 300 and the connection assembly 200, respectively.
In a second aspect, the present application also provides a test apparatus comprising: a test cabinet; and the second connection end 2015 and the third connection end 2024 of the test tool are respectively connected with the test cabinet, for example, the positive wire harness of the test cabinet is connected with the second connection end 2015, and the negative wire harness of the test cabinet is connected with the third connection end 2024.
In the process of the implementation, the test cabinet can be connected with the second connecting end 2015 and the third connecting end 2024 of the test tool through the test wire harness (namely the positive wire harness and the negative wire harness), so that after the test sample 300 in the test tool is respectively connected with the first connecting end 2014 and the fourth connecting end 2025, an electrifying loop can be realized, the safety and reliability of the connection in the test process are improved, the stress loosening at the connecting position is avoided, and the test of the test sample 300 is facilitated.
In all embodiments of the present application, "large" and "small" are relative terms, "more" and "less" are relative terms, "upper" and "lower" are relative terms, and the description of such relative terms is not repeated herein.
It should be appreciated that reference throughout this specification to "in this embodiment," "in an embodiment of the application," or "as an alternative" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the application. Thus, the appearances of the phrases "in this embodiment," "in this application embodiment," or "as an alternative embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. Those skilled in the art will also appreciate that the embodiments described in the specification are all alternative embodiments and that the acts and modules referred to are not necessarily required in the present application.
In various embodiments of the present application, it should be understood that the size of the sequence numbers of the above processes does not mean that the execution sequence of the processes is necessarily sequential, and the execution sequence of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on the implementation process of the embodiments of the present application.
The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. A test fixture, its characterized in that includes:
a mounting bulkhead configured with a mounting face configured with a plurality of securing bits;
the connecting assembly is configured to be connected with the fixed position and comprises a first connecting piece and a second connecting piece which are distributed at intervals, wherein the first connecting piece is configured with a first connecting end and a second connecting end, and the second connecting piece is configured with a third connecting end and a fourth connecting end;
the test sample is configured on the mounting surface and is respectively connected with the first connecting end and the fourth connecting end.
2. The test fixture of claim 1, wherein the first connector includes a first copper bar and a first insulator, the first copper bar being disposed on a side of the first insulator facing away from the mounting surface, and a portion of the first insulator being disposed in the fixing location.
3. The test fixture of claim 2, wherein the first insulating member comprises a first fixing portion and a first adapting portion, the first fixing portion is connected with the first adapting portion, the first copper bar is configured on one side of the first fixing portion away from the first adapting portion, a cross-sectional dimension of the first fixing portion is larger than a cross-sectional dimension of the fixing portion, and the first adapting portion is adapted to the fixing portion.
4. The test fixture of claim 2, wherein a cross-sectional dimension of the first copper bar is greater than a cross-sectional dimension of the first insulator.
5. The test fixture of claim 1, wherein the second connector includes a second copper bar and a second insulator, the second copper bar being disposed on a side of the second insulator facing away from the mounting surface, and a portion of the second insulator being disposed in the fixing location.
6. The test fixture of claim 5, wherein the second insulating member comprises a second fixing portion and a second adapting portion, the second fixing portion is connected with the second adapting portion, the second copper bar is configured on one side of the second fixing portion away from the second adapting portion, a cross-sectional dimension of the second fixing portion is larger than a cross-sectional dimension of the fixing portion, and the second adapting portion is adapted to the fixing portion.
7. The test fixture of claim 5, wherein a cross-sectional dimension of the second copper bar is greater than a cross-sectional dimension of the second insulator.
8. The test fixture of claim 1, wherein the test fixture comprises a connection copper bar connected to the test sample, the first connection end, and the fourth connection end, respectively.
9. The test fixture of claim 1, wherein the mounting spacer comprises an insulating spacer in contact with the test sample and the connection assembly, respectively.
10. A test apparatus, comprising:
a test cabinet; and
the test fixture of any one of claims 1-9, wherein the second and third connection ends of the test fixture are respectively connected to the test cabinet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322241333.0U CN220671493U (en) | 2023-08-18 | 2023-08-18 | Test fixture and test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322241333.0U CN220671493U (en) | 2023-08-18 | 2023-08-18 | Test fixture and test equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220671493U true CN220671493U (en) | 2024-03-26 |
Family
ID=90343973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322241333.0U Active CN220671493U (en) | 2023-08-18 | 2023-08-18 | Test fixture and test equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220671493U (en) |
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2023
- 2023-08-18 CN CN202322241333.0U patent/CN220671493U/en active Active
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