CN212568955U - Cathode device for testing high specific capacity tantalum anode capacity - Google Patents
Cathode device for testing high specific capacity tantalum anode capacity Download PDFInfo
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- CN212568955U CN212568955U CN202020408534.9U CN202020408534U CN212568955U CN 212568955 U CN212568955 U CN 212568955U CN 202020408534 U CN202020408534 U CN 202020408534U CN 212568955 U CN212568955 U CN 212568955U
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Abstract
A cathode device for testing high specific capacity tantalum anode capacity comprises a lead-out connecting piece, a tantalum block assembly and a tantalum block fixing piece, wherein the tantalum block fixing piece is sleeved on the tantalum block assembly and used for firmly fixing the tantalum block assembly, the lead-out connecting piece is positioned on one side of the tantalum block assembly, and the lower half part of the lead-out connecting piece is fixedly connected with the tantalum block assembly and used for connecting the whole cathode device with a capacity testing instrument; the utility model keeps the average distance d between the anode area and the cathode area stable all the time in the testing process, so that the testing results of capacity and loss are stable; the surface area of the cathode is 2 times of that of the cathode in the existing capacity test, and the specific capacity extraction rate is high, so that the high specific capacity tantalum powder test can be met. The cathode structure has good contact, the average distance d between the anode area and the cathode area is stable all the time, and the capacity and loss test result is stable.
Description
Technical Field
The utility model relates to a tantalum anode block specific volume test equipment technical field especially relates to a cathode device for testing high specific capacity tantalum anode capacity.
Background
The specific surface area of the tested cathode is a key factor influencing the capacity test of the tantalum anode block, and the specific surface area of the cathode required by the test is correspondingly increased along with the increase of the capacity of the tantalum anode; when the specific surface area of the cathode is large enough, the capacity test value of the tantalum anode tends to be stable and close to the real value. Along with the development of the improvement of the specific volume of tantalum powder, the specific area of a cathode for testing is required to be large enough, but the current Pt black cathode for testing (1) plating Pt black on a platinum sheet has short service life and small surface area; (2) the Ag-Ta cathode prepared by binding a plurality of tantalum powder pressed sintering blocks on a silver sheet has a complex structure and large loss, and the tantalum blocks and the silver sheet are in poor contact in a binding mode.
The capacity test cathode used in the current test consists of 17 tantalum sintering blocks, and the surface area of the cathode is small, so that the facing area S is small. When the ultra-high specific capacity tantalum anode is measured, the specific capacity extraction rate is low, and the high specific capacity tantalum powder test cannot be met. And because the cathode is only arranged on one side of the test cup due to the shape relationship of the test cup, the average distance d between the anode area and the cathode area is inconsistent along with different operation habits of testers in the test process, so that the test result and the loss value of the capacitor C are unstable. The tantalum block as the cathode is bound to the silver plate, resulting in poor contact and poor stability of capacity test. The Ag-Ta cathode prepared by binding a plurality of tantalum powder pressed sintering blocks on a silver sheet has poor contact, large change of the average distance d between the anode area and the cathode area, and unstable capacity and loss test results.
Disclosure of Invention
In view of the above, it is desirable to provide a cathode device for testing the capacity of a high specific capacity tantalum anode.
The utility model provides a cathode device for testing high specific capacity tantalum anode capacity, is including deriving connection piece, tantalum piece subassembly, tantalum piece mounting, and tantalum piece mounting suit is on tantalum piece subassembly to be used for fixed firm with tantalum piece subassembly, derive the connection piece and be located one side of tantalum piece subassembly, and derive the lower half and the tantalum piece subassembly fixed connection of connection piece, in order to be used for being connected whole cathode device and capacity test instrument.
Preferably, the tantalum block assembly comprises a cylindrical tantalum block and a circular tantalum block, the cylindrical tantalum block is located at the bottom, the circular tantalum block is installed above the cylindrical tantalum block, and the bottom of the circular tantalum block is tightly attached to the top of the cylindrical tantalum block.
Preferably, the tantalum sheets are arranged in the middles of the cylindrical tantalum block and the annular tantalum block, one ends of the tantalum sheets are located in the middle positions of the inner portions of the cylindrical tantalum block and the annular tantalum block, and the other ends of the tantalum sheets extend outwards and are fixedly connected with the leading-out connecting sheets.
Preferably, the height of the annular tantalum block is larger than that of the cylindrical tantalum block.
Preferably, the height of the annular tantalum block is formed by sintering after one-time compression molding.
Preferably, the height of the circular ring-shaped tantalum block is formed by sequentially overlapping and assembling at least two single circular ring-shaped tantalum blocks.
Preferably, the number of the tantalum block fixing pieces is at least two, and the included angle between each two tantalum block fixing pieces is 90-180 degrees.
Preferably, the tantalum block fixing piece comprises a bottom connecting piece, an L-shaped connecting piece and a positioning connecting piece, the L-shaped connecting piece is positioned at the top of the circular tantalum block, the short edge of the L-shaped connecting piece extends into the middle circular hole of the circular tantalum block and is tightly attached to the inner wall of the circular tantalum block to fasten the circular tantalum block, the positioning connecting piece is positioned on the outer wall surfaces of the circular tantalum block and the cylindrical tantalum block and is tightly attached to the outer wall of the circular tantalum block and the outer wall of the cylindrical tantalum block, the upper end of the positioning connecting piece is fixedly connected with one end of the long edge of the L-shaped connecting piece, the lower end of the positioning connecting piece is fixedly connected with the upper surface of the bottom connecting piece to support and position the circular tantalum block and the cylindrical tantalum block, the bottom connecting piece is positioned below the cylindrical tantalum block, and the upper part of the bottom connecting piece is, one end of the bottom connecting sheet is fixedly connected with the lower end of the positioning connecting sheet so as to support the circular tantalum block and the cylindrical tantalum block.
The utility model adopts the above technical scheme, its beneficial effect lies in: the cathode device structure provided by the utility model is of an annular structure, so as to ensure that the average distance d between the anode area and the cathode area is always kept stable in the test process, namely when the distance between the anode block and the cathode area at one end is far, the distance between the anode block and the cathode area at the other end is close, so that the capacity and loss test results are stable; the surface area of the cathode reaches 37.07m ^2/g, which is 2 times of the surface area of the cathode in the existing capacity test, and the specific capacity extraction rate is high, so that the high specific capacity tantalum powder test can be met. The Ta-Ta cathode structure prepared by pressing annular sintered blocks by tantalum powder and welding the annular sintered blocks on the tantalum sheet has good contact, so that the average distance d between the anode area and the cathode area is stable all the time, and the capacity and loss test result is stable.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic structural diagram of the tantalum block fixing member of the present invention.
Fig. 3 is a schematic structural view of the combination of three tantalum block fixing pieces of the present invention.
Fig. 4 is a schematic structural diagram of the circular tantalum block of the present invention.
Fig. 5 is a schematic structural diagram of the cylindrical tantalum block of the present invention.
In the figure: the device comprises a lead-out connecting piece 01, a tantalum block assembly 02, a cylindrical tantalum block 21, a circular tantalum block 22, a tantalum sheet 23, a tantalum block fixing piece 03, a bottom connecting piece 31, an L-shaped connecting piece 32 and a positioning connecting piece 33.
Detailed Description
Please refer to fig. 1 to 5, an embodiment of the present invention provides a cathode device for testing high specific capacity tantalum anode capacity, including a derivation connection piece 01, a tantalum block component 02, a tantalum block fixing component 03, wherein the tantalum block fixing component 03 is sleeved on the tantalum block component 02 to fix the tantalum block component 02 firmly, the derivation connection piece 01 is located on one side of the tantalum block component 02, and the lower half of the derivation connection piece 01 is fixedly connected with the tantalum block component 02 to be used for connecting the whole cathode device with a capacity testing instrument, wherein the derivation connection piece 01 is made of tantalum.
The height of the annular tantalum block 22 is greater than the height of the cylindrical tantalum block 21. The height of the annular tantalum block 22 is formed by one-step pressing and sintering, or the height of the annular tantalum block 22 can be formed by sequentially overlapping and assembling at least two single annular tantalum blocks 22.
The number of the tantalum block fixing parts 03 is at least two, and the included angle between each two tantalum block fixing parts 03 is 90-180 degrees, so that the tantalum block fixing parts 03 can firmly fix the annular tantalum block 22 and the cylindrical tantalum block 21 together. The angle between each tantalum block fixing 03 can be 90 degrees or 120 degrees according to practical requirements, and if two tantalum block fixing 03 are adopted, the angle between the two tantalum block fixing 03 can be 180 degrees.
The tantalum block fixing piece 03 comprises a bottom connecting piece 31, an L-shaped connecting piece 32 and a positioning connecting piece 33, wherein the L-shaped connecting piece 32 is positioned at the top of the circular tantalum block 22, the short edge of the L-shaped connecting piece 32 extends into a middle circular hole of the circular tantalum block 22 and is tightly attached to the inner wall of the circular tantalum block 22 so as to fasten the circular tantalum block 22, the positioning connecting piece 33 is positioned on the outer wall surfaces of the circular tantalum block 22 and the cylindrical tantalum block 21, the positioning connecting piece 33 is tightly attached to the outer wall of the circular tantalum block 22 and the outer wall of the cylindrical tantalum block 21, the upper end of the positioning connecting piece 33 is fixedly connected with one end of the long edge of the L-shaped connecting piece 32, the lower end of the positioning connecting piece 33 is fixedly connected with the upper surface of the bottom connecting piece 31 so as to support and position the circular tantalum block 22 and the cylindrical tantalum block 21, the bottom connecting piece 31 is positioned below the cylindrical tantalum block 21, and the, one end of the bottom connecting piece 31 is fixedly connected with the lower end of the positioning connecting piece 33 so as to support the circular tantalum block 22 and the cylindrical tantalum block 21.
When the test specific volume loss, form 1 cylindrical tantalum piece 21 and 3 ring shape tantalum piece 22 after the stack equipment in proper order the utility model discloses the cathode device of structure with above-mentioned cathode device immersion test liquid, put into ring shape tantalum piece 22 in the tantalum anode piece that will detect again and put through test circuit can implement the test. Because the tantalum anode block to be detected is positioned in the inner ring of the circular tantalum block 22, the distance change of the tantalum anode block from the cathode is small, and the detected loss fluctuation is small. The cathode device with the structure has large enough surface area, so the specific volume extraction rate is high, and the cathode device is suitable for the electrical detection of the tantalum powder with ultrahigh specific volume.
Through experimental we discovery, adopt the utility model discloses a this kind of cathode device structure makes specific volume, loss test result more stable, and following table data is the experimental data of this device and the experimental data's of current device contrast data:
while the invention has been described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention.
Claims (8)
1. A cathode device for testing high specific capacity tantalum anode capacity is characterized in that: including deriving connection piece, tantalum piece subassembly, tantalum piece mounting suit is on tantalum piece subassembly to be used for fixed firm with tantalum piece subassembly, the derivation connection piece is located one side of tantalum piece subassembly, and the lower half and the tantalum piece subassembly fixed connection of deriving the connection piece are used for being connected whole negative pole device and capacity test instrument.
2. The cathode device for testing high specific capacity tantalum anode capacity according to claim 1, wherein: the tantalum block assembly comprises a cylindrical tantalum block and a ring-shaped tantalum block, the cylindrical tantalum block is located at the bottom, the ring-shaped tantalum block is installed above the cylindrical tantalum block, and the bottom of the ring-shaped tantalum block is tightly attached to the top of the cylindrical tantalum block.
3. The cathode device for testing high specific capacity tantalum anode capacity of claim 2, wherein: the middle of cylindrical tantalum piece, ring shape tantalum piece all is provided with the tantalum piece, and the one end of tantalum piece all is located the inside intermediate position of cylindrical tantalum piece, ring shape tantalum piece, and the other end of tantalum piece is then outside extension to with derive connection piece fixed connection.
4. The cathode device for testing high specific capacity tantalum anode capacity of claim 2, wherein: the height of the annular tantalum block is larger than that of the cylindrical tantalum block.
5. The cathode device for testing high specific capacity tantalum anode capacity of claim 4, wherein: the height of the annular tantalum block is formed by sintering after one-time pressing forming.
6. The cathode device for testing high specific capacity tantalum anode capacity of claim 4, wherein: the height of the circular tantalum block is formed by sequentially overlapping and assembling at least two single circular tantalum blocks.
7. The cathode device for testing high specific capacity tantalum anode capacity according to claim 1, wherein: the number of the tantalum block fixing pieces is at least two, and the included angle between every two tantalum block fixing pieces is 90-180 degrees.
8. The cathode device for testing high specific capacity tantalum anode capacity of claim 7, wherein: the tantalum block fixing piece comprises a bottom connecting piece, an L-shaped connecting piece and a positioning connecting piece, wherein the L-shaped connecting piece is positioned at the top of the circular tantalum block, the short edge of the L-shaped connecting piece extends into a middle circular hole of the circular tantalum block and is tightly attached to the inner wall of the circular tantalum block so as to play a role in fastening the circular tantalum block, the positioning connecting piece is positioned on the outer wall surfaces of the circular tantalum block and the cylindrical tantalum block and is tightly attached to the outer wall of the circular tantalum block and the outer wall of the cylindrical tantalum block, the upper end of the positioning connecting piece is fixedly connected with one end of the long edge of the L-shaped connecting piece, the lower end of the positioning connecting piece is fixedly connected with the upper surface of the bottom connecting piece so as to play a role in supporting and positioning the circular tantalum block and the cylindrical tantalum block, the bottom connecting piece is positioned below the cylindrical tantalum block, the, so as to support the circular tantalum block and the cylindrical tantalum block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020408534.9U CN212568955U (en) | 2020-03-26 | 2020-03-26 | Cathode device for testing high specific capacity tantalum anode capacity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020408534.9U CN212568955U (en) | 2020-03-26 | 2020-03-26 | Cathode device for testing high specific capacity tantalum anode capacity |
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| Publication Number | Publication Date |
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| CN212568955U true CN212568955U (en) | 2021-02-19 |
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| CN202020408534.9U Active CN212568955U (en) | 2020-03-26 | 2020-03-26 | Cathode device for testing high specific capacity tantalum anode capacity |
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| CN (1) | CN212568955U (en) |
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