CN215641734U - Container device suitable for measuring obturator temperature and rupture of membranes temperature by heating up internal resistance method - Google Patents
Container device suitable for measuring obturator temperature and rupture of membranes temperature by heating up internal resistance method Download PDFInfo
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- CN215641734U CN215641734U CN202122181944.1U CN202122181944U CN215641734U CN 215641734 U CN215641734 U CN 215641734U CN 202122181944 U CN202122181944 U CN 202122181944U CN 215641734 U CN215641734 U CN 215641734U
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000010438 heat treatment Methods 0.000 title claims description 8
- 239000012528 membrane Substances 0.000 title description 8
- 238000012360 testing method Methods 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 11
- 239000011148 porous material Substances 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 13
- 239000003973 paint Substances 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 claims description 2
- 238000005260 corrosion Methods 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims 1
- 239000003792 electrolyte Substances 0.000 abstract description 12
- 230000005484 gravity Effects 0.000 abstract description 4
- 230000009471 action Effects 0.000 abstract description 3
- 238000004140 cleaning Methods 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Images
Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The utility model provides a container device suitable for measuring closed pore temperature and rupture temperature by a temperature rise internal resistance method, which does not need to use a sealing ring to fix a diaphragm, fixes the diaphragm to be measured by the gravity action of a device part, has smaller edge stress of the diaphragm to be measured, can ensure the wettability of the diaphragm by filling electrolyte on two sides of the diaphragm when the device is used for testing, thereby ensuring the accuracy and stability of test data, and has simple circuit connection during testing, convenient use and easier cleaning work.
Description
Technical Field
The utility model relates to the field of performance test of battery diaphragm materials, in particular to a container device suitable for testing the closed pore temperature and the diaphragm breaking temperature of a lithium battery diaphragm by a temperature-rising internal resistance method.
Background
The internal resistance heating method is a common method for testing the closed pore temperature and the rupture temperature of a diaphragm at present, and the main principle is that the diaphragm is placed in the middle of a primary battery model, electrolyte is added at two ends of the battery model respectively, and a lead is added at the two ends respectively, and is connected to a data acquisition instrument to acquire the ionic resistance of the diaphragm; meanwhile, in the two grooves of the battery model, a thermocouple is respectively arranged at the position close to the diaphragm, the temperature data of the two ends of the diaphragm are collected, and the temperature is recorded by a data collector. And finally, putting the battery model into an incubator, setting parameters for heating, simultaneously acquiring the internal resistance of the battery model and the temperature of the diaphragm in the heating process, and determining the closed pore temperature of the diaphragm through the inflection point of the internal resistance and the temperature curve. The following problems are common when the test method is applied at present.
Problem 1: and (3) clamping, fixing and sealing the diaphragm sample by using the colloid material sealing rings at two sides of the diaphragm to be detected. Because the material of rubber circle can produce huge frictional resistance when laminating to the diaphragm, this makes the diaphragm in the edge that the obturator shrink of diaphragm closed produced when rising the temperature leads to the rubber circle to clip the diaphragm break first for electrolyte switches on, then measures the rapid decline of resistance. This can lead to two conditions, one of which is the disturbance of the curve of its rupture segment; in addition, the resistance of the material suddenly and rapidly decreases when the resistance of the closed pore section does not increase to the maximum value.
Problem 2: the degree of wetting of the separator by the electrolyte also has a large influence on the stability of the curve obtained. If the liquid fails to fill the sealed chamber after dropping the electrolyte into the measuring system and air bubbles remain in a partial region, there is a possibility that a wavy burr will be generated in random sections on the curve and the initial resistance value of the measuring system will become high and low.
Problem 3: at present, partial devices adhere positive and negative electrode wires for measuring resistance values to a container in a gluing mode, so that under the condition of long-time high-temperature action, a glue material is melted and adhered to the wall of the container, and the container becomes difficult to clean. The resulting impurities may also be mistakenly mixed into the liquid during operation, causing instability in the measurement results.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide a container device suitable for measuring a closed pore temperature and a membrane rupture temperature by a temperature-rising internal resistance method, which does not need to use a sealing ring to fix a membrane, and fixes the membrane to be measured by the gravity action of a device component, and the device enables enough electrolyte to be stored on two sides of the membrane during membrane testing, so as to ensure the wettability of the membrane, and thus ensure the accuracy of test data.
A container device suitable for measuring the obturator temperature and the rupture temperature by a heating internal resistance method comprises a cover plate (1), a clamping plate (2), a bottom plate (3) and a sealing device (4);
the electrode structure comprises a cover plate (1), wherein an electrode connecting column (11) and a first opening (12) are arranged on the cover plate (1), a first groove (13) is arranged at the bottom of the cover plate (1), and at least one protrusion (14) is arranged on the periphery of the groove;
the clamping plate (2) is provided with at least one second open hole (22) which longitudinally penetrates through the clamping plate, the top of the clamping plate (2) is provided with a second groove (23), the periphery of the groove is provided with a limiting groove (21) matched with the cover plate bulge (14), and the bottom of the clamping plate is provided with a third groove (24);
the temperature measuring device comprises a bottom plate (3), wherein a fourth groove (33) is formed in the bottom plate (3), a fifth groove (34) is formed in the fourth groove (33), an electrode connecting column (31) is arranged on the bottom plate (3), and a temperature measuring hole (32) is formed in the bottom plate (3);
apron (1), splint (2) and bottom plate (3) top-down cooperation are connected, block through arch (14) and spacing groove (21) between apron (1) and splint (2), splint (2) bottom embedding bottom plate (3) in fourth recess (33), do the insulating protection to the position of bottom plate (3) and splint (2) gomphosis on bottom plate (3) and handle, constitute the buffer memory chamber after first recess (13) and second recess (23) assemble, constitute the test chamber after third recess (24) and fifth recess (34) assemble, sealing device (4) can be stuffed into in first trompil (12).
Preferably, the number of the second openings (22) is set to 5.
Preferably, the insulating protection is to decorate the surface of the bottom plate (3) on the surface where the bottom plate (3) is embedded with the clamping plate (2) by using insulating paint.
Preferably, the buffer cavity and the test cavity are cylindrical.
Preferably, the number of the protrusions (14) and the limiting grooves (21) is 4.
Preferably, the cover plate (1), the clamping plate (2) and the bottom plate (3) are made of copper.
Preferably, the material of the sealing means (4) is a flexible corrosion resistant material.
The device of the utility model has the advantages that: the device adopts a top-down assembly mode, so that the diaphragm to be measured is measured in a horizontal state, the clamping force of the diaphragm is derived from gravity naturally generated after different parts of a die are matched, one surface of each of two clamped surfaces is made of a metal material, the other surface of each of the two clamped surfaces is made of an insulating paint material, and the friction force generated by the two materials in the adhesion process of the two materials to the diaphragm is much smaller than that of a rubber ring, so that the resistance to the contraction stress of the diaphragm is smaller, and the situation of edge tearing is not easy to occur; the buffer cavity and the second opening are specially arranged in the device, the second opening has the function of the flow guide holes, the electrolyte infiltrates the diaphragm through the 5 flow guide holes respectively and simultaneously, under the condition of natural flow matched with the liquid gravity, the impact on the diaphragm in the thickness direction of the diaphragm is smaller, the change of the clamping state of the diaphragm to be tested cannot be caused, the test cavity can be filled with the electrolyte more fully, the infiltration performance is better, and the test data is more reliable; in addition, this device is equipped with the electrode connecting post that can connect the internal resistance appearance test wire, need not to reuse the sticky tape fixed, can material saving keep measurement system's cleanliness factor simultaneously, and circuit connection is simple when the device uses, convenient to use, and cleaning work also goes on more easily.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without inventive efforts, wherein:
FIG. 1 is an assembled schematic view of an embodiment of the present invention;
FIG. 2 is an exploded view of an embodiment of the present invention;
wherein,
1. the electrode structure comprises a cover plate, 11, a cover plate electrode connecting column, 12, a first hole, 13, a first groove, 14 and a protrusion; 2. the clamping plate 21, the limiting groove 22, the second opening 23, the second groove 24 and the third groove; 3. the base plate 31, the base plate electrode connecting column 32, the temperature measuring hole 33, the fourth groove 34 and the fifth groove; 4. and (7) sealing the device.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the utility model may be more readily understood by those skilled in the art. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
The specific method of use of the device is described as follows:
firstly, adding a little excessive electrolyte into a fifth groove (34) of a bottom plate (3), flatly laying a cut diaphragm to be measured at the bottom of a fourth groove (33) of the bottom plate (3), enabling the diaphragm to be measured to cover the top of the fifth groove (34), placing a clamping plate (2) in the fourth groove (33) of the bottom plate (3), and fixing the diaphragm between the clamping plate (2) and the bottom plate (3); further, the cover plate (1) is arranged on the clamping plate (2), so that the protrusion (14) of the cover plate and the limiting groove (21) of the clamping plate are well matched, a thermocouple which can be tightly matched with the inlet of the temperature measuring hole after the root part of the thermocouple is coated with a rubber material is inserted into the temperature measuring hole (32), and a probe of a resistance measuring instrument is connected to the cover plate electrode connecting column (11) and the bottom plate electrode connecting column (31), so that the container installation work is completed; further, electrolyte is added from the first opening hole (12), the electrolyte enters the testing cavity from the buffering cavity through the second opening hole (22), sufficient free electrolyte is arranged on two sides of the diaphragm to be tested, and the container is placed into heating equipment such as an oven to start an experiment.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and are preferred embodiments, which are intended to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the scope of the present invention.
Claims (7)
1. A container device suitable for measuring the obturator temperature and the rupture temperature by a heating internal resistance method is characterized by comprising a cover plate (1), a clamping plate (2), a bottom plate (3) and a sealing device (4);
the electrode structure comprises a cover plate (1), wherein an electrode connecting column (11) and a first opening (12) are arranged on the cover plate (1), a first groove (13) is arranged at the bottom of the cover plate (1), and at least one protrusion (14) is arranged on the periphery of the groove;
the clamping plate (2) is provided with at least one second open hole (22) which longitudinally penetrates through the clamping plate, the top of the clamping plate (2) is provided with a second groove (23), the periphery of the groove is provided with a limiting groove (21) matched with the cover plate bulge (14), and the bottom of the clamping plate is provided with a third groove (24);
the temperature measuring device comprises a bottom plate (3), wherein a fourth groove (33) is formed in the bottom plate (3), a fifth groove (34) is formed in the fourth groove (33), an electrode connecting column (31) is arranged on the bottom plate (3), and a temperature measuring hole (32) is formed in the bottom plate (3);
apron (1), splint (2) and bottom plate (3) top-down cooperation are connected, block through arch (14) and spacing groove (21) between apron (1) and splint (2), splint (2) bottom embedding bottom plate (3) in fourth recess (33), do the insulating protection to the position of bottom plate (3) and splint (2) gomphosis on bottom plate (3) and handle, constitute the buffer memory chamber after first recess (13) and second recess (23) assemble, constitute the test chamber after third recess (24) and fifth recess (34) assemble, sealing device (4) can be stuffed into in first trompil (12).
2. The container means for measuring closed cell temperature and rupture temperature by elevated internal resistance method as claimed in claim 1, wherein the number of said second openings (22) is set to 5.
3. The container device for measuring the closed cell temperature and the film rupture temperature by the temperature rise internal resistance method as claimed in claim 1, wherein the insulation protection is that the surface of the bottom plate (3) which is embedded with the bottom plate (3) and the clamping plate (2) is decorated by using insulating paint.
4. The container apparatus according to claim 1, wherein the buffer chamber and the test chamber are cylindrical.
5. The container device for measuring the closed cell temperature and the film rupture temperature by the temperature-rising internal resistance method according to claim 1, wherein the number of the protrusions (14) and the limiting grooves (21) is 4.
6. The container device for measuring the closed pore temperature and the film rupture temperature by the temperature rise internal resistance method as claimed in claim 1, characterized in that the cover plate (1), the clamping plate (2) and the bottom plate (3) are made of copper.
7. The apparatus according to claim 1, wherein the sealing means is made of a flexible, corrosion-resistant material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122181944.1U CN215641734U (en) | 2021-09-08 | 2021-09-08 | Container device suitable for measuring obturator temperature and rupture of membranes temperature by heating up internal resistance method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122181944.1U CN215641734U (en) | 2021-09-08 | 2021-09-08 | Container device suitable for measuring obturator temperature and rupture of membranes temperature by heating up internal resistance method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215641734U true CN215641734U (en) | 2022-01-25 |
Family
ID=79914299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122181944.1U Active CN215641734U (en) | 2021-09-08 | 2021-09-08 | Container device suitable for measuring obturator temperature and rupture of membranes temperature by heating up internal resistance method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215641734U (en) |
-
2021
- 2021-09-08 CN CN202122181944.1U patent/CN215641734U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230726 Address after: No. 86, Caiqiu Road, Duodao District, Jingmen City, Hubei Province, 448000 Patentee after: Hubei Enjie New Material Technology Co.,Ltd. Address before: 201306 No. 155 Nanlu Highway, Pudong New Area, Shanghai Patentee before: SHANGHAI ENJIE NEW MATERIAL TECHNOLOGY Co.,Ltd. |