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CN-224231856-U - Powder resistivity measuring die

CN224231856UCN 224231856 UCN224231856 UCN 224231856UCN-224231856-U

Abstract

The utility model belongs to the technical field of resistance measurement, and particularly relates to a powder resistivity measurement die which comprises a base, a positioning ring, a first gasket and a second gasket, wherein the base is provided with a groove for accommodating the positioning ring, a through hole with two ends penetrating is arranged in the base, the through hole and the groove are coaxially arranged, the first gasket is arranged in the positioning ring, and the second gasket is arranged in the through hole. The powder to be tested is clamped up and down by the first gasket and the second gasket to form a test closed space, the test closed space is arranged in the through hole of the base, the powder resistivity can be quickly and effectively detected, the quick disassembly and replacement of the sample can be realized through the positioning ring, the die can be directly applied to the diaphragm resistance meter, the dual-purpose of one machine is realized, the operability is high, the input cost is low, and meanwhile, the powder floating problem of the sample in the powder resistivity test can be improved.

Inventors

  • FAN CHAO
  • CAI QIWEN
  • Huang Heche

Assignees

  • 东莞维科电池有限公司

Dates

Publication Date
20260512
Application Date
20250306

Claims (10)

  1. 1. The powder resistivity measuring die is characterized by comprising a base (1), a positioning ring (2), a first gasket (3) and a second gasket (4), wherein the base (1) is provided with a groove (11) for accommodating the positioning ring (2), a through hole (12) with two ends penetrating is formed in the base (1), the through hole (12) and the groove (11) are coaxially arranged, the first gasket (3) is arranged in the positioning ring (2), and the second gasket (4) is arranged in the through hole (12).
  2. 2. The powder resistivity measuring die as claimed in claim 1, wherein the grooves (11) are truncated cone-shaped grooves, and the positioning ring (2) is a truncated cone-shaped hollow ring with a size matched with the grooves (11).
  3. 3. The powder resistivity measuring die as claimed in claim 1, wherein the grooves (11) are prismatic table grooves, and the positioning ring (2) is prismatic table hollow ring with a size matching with the grooves (11).
  4. 4. The powder resistivity measuring die as claimed in claim 1, wherein the groove (11) is a hemispherical groove, and the positioning ring (2) is a hemispherical hollow ring having a size matching that of the groove (11).
  5. 5. The powder resistivity measuring die as claimed in claim 2, 3 or 4, wherein the height of the positioning ring (2) is greater than or equal to the thickness of the first shim (3).
  6. 6. The powder resistivity measuring die as claimed in claim 5, wherein the thickness of the second shim (4) is greater than the thickness of the first shim (3).
  7. 7. A powder resistivity measuring die as claimed in claim 2, 3 or 4, wherein the inner diameter of the locating ring (2) is the same as the diameter of the first shim (3).
  8. 8. Powder resistivity-measuring die according to claim 7, characterized in that the diameter of the second shim (4) is smaller than the diameter of the first shim (3).
  9. 9. Powder resistivity-measuring die according to claim 8, characterized in that the diameter of the second spacer (4) is the same as the diameter of the through-hole (12).
  10. 10. Powder resistivity measuring mould according to claim 1, characterized in that the through hole (12) is provided with an opening (13) at the end remote from the base (1).

Description

Powder resistivity measuring die Technical Field The utility model belongs to the technical field of resistance measurement, and particularly relates to a powder resistivity measurement die. Background The rate performance of a lithium ion battery is closely related to the battery resistance, which comprises an ionic resistance and an electronic resistance. In the actual battery research and development and production process, the ionic resistance part is required to be evaluated at the battery finished product end, and the electronic resistance part can be rapidly evaluated at the material and pole piece end, so that the test of the resistivity of the positive and negative electrode materials of the lithium battery is of great significance to the process stability of the materials and the resistance estimation of the finished battery cell. By measuring the resistivity of the powder, the conductivity of the material can be known, and a basis is provided for the selection and modification of the material. In the research and development process of the battery material, the powder resistivity of different materials can be tested to screen out the material with excellent conductivity, so that the overall performance of the battery is further optimized. In the current stage, the powder resistor is required to be pressed into tablets, the testing time is long, and the tablets are difficult to form. There are powder resistance meters which do not need to be pressed into sheets for direct measurement, but the cost is high, and the simultaneous measurement of the film and the powder resistance cannot be achieved. Disclosure of utility model The utility model aims to provide a powder resistivity measuring die which can be used for a diaphragm resistance meter, can be used for testing the diaphragm resistance and the powder resistance, has two purposes, can accurately measure the powder resistivity, can guide the further optimization of materials and can reduce the testing cost. In order to achieve the above purpose, the present utility model adopts the following technical scheme: The utility model provides a powder resistivity measurement die, includes base, holding ring, first gasket and second gasket, the base is equipped with and is used for the holding the recess of holding ring, be equipped with the through-hole that both ends link up in the base, the through-hole with the recess is coaxial to be set up, first gasket is arranged in the holding ring, the second gasket is arranged in the through-hole. Preferably, the groove is a truncated cone-shaped groove, and the positioning ring is a truncated cone-shaped hollow ring matched with the groove in size. Preferably, the groove is a prismatic table type groove, and the positioning ring is a prismatic table type hollow ring matched with the groove in size. Preferably, the groove is a hemispherical groove, and the positioning ring is a hemispherical hollow ring with the size matched with that of the groove. Preferably, the height of the truncated cone of the positioning ring is greater than or equal to the thickness of the first gasket. Preferably, the thickness of the second spacer is greater than the thickness of the first spacer. More preferably, the thickness of the first gasket is 1-2mm, and the thickness of the second gasket is 5-8mm. Preferably, the inner diameter of the locating ring is the same as the diameter of the first gasket. Preferably, the diameter of the second gasket is smaller than the diameter of the first gasket. Preferably, the diameter of the second spacer is the same as the diameter of the through hole. More preferably, the diameter of the first gasket is 16-18mm, and the diameter of the second gasket is 13-15mm. Preferably, the through hole is provided with an opening at one end far away from the base. Compared with the prior art, the powder resistivity measuring die has the beneficial effects that the powder resistivity measuring die is capable of rapidly and effectively detecting and obtaining the powder resistivity by utilizing the first gasket and the second gasket to clamp powder to be measured up and down to form a test closed space and placing the test closed space in the through hole of the base, and rapidly disassembling and replacing a sample can be realized through the positioning ring, and the die can be directly applied to a diaphragm resistor instrument, so that one machine is realized, the operability is high, the input cost is low, and meanwhile, the powder floating problem of the sample in the powder resistivity test can be improved. Drawings Fig. 1 is a cross-sectional view of the overall structure of the present utility model. Fig. 2 is a schematic structural view of the base of the present utility model. FIG. 3 is a schematic view of the positioning ring of the present utility model. Reference numerals: 1. The base, 11, recess, 12, through-hole, 13 are uncovered, 2, holding ring, 3, first gasket, 4, second gasket. Detailed