CN220064321U - Lithium ion battery damage lithium analysis amount testing device - Google Patents
Lithium ion battery damage lithium analysis amount testing device Download PDFInfo
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- CN220064321U CN220064321U CN202321173378.2U CN202321173378U CN220064321U CN 220064321 U CN220064321 U CN 220064321U CN 202321173378 U CN202321173378 U CN 202321173378U CN 220064321 U CN220064321 U CN 220064321U
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- main body
- lithium
- body cavity
- ion battery
- lithium ion
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 30
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 30
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims abstract description 20
- 229910001416 lithium ion Inorganic materials 0.000 title claims abstract description 20
- 238000012360 testing method Methods 0.000 title claims abstract description 18
- 238000007789 sealing Methods 0.000 claims description 24
- 238000001556 precipitation Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 7
- 238000007654 immersion Methods 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000007789 gas Substances 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 208000032953 Device battery issue Diseases 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 230000002441 reversible effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- Secondary Cells (AREA)
Abstract
The utility model relates to a lithium ion battery damage analysis lithium amount measuring device, and belongs to the technical field of lithium batteries. The utility model provides a lithium ion battery damage lithium analysis volume testing arrangement, includes main body chamber lid, objective table, atmospheric pressure balanced switch, main body chamber and graduated tube, the bottom of main body chamber lid is connected with through the connecting rod the objective table, main body chamber lid with main body chamber passes through threaded connection, be equipped with on the lateral wall of main body chamber atmospheric pressure balanced switch with the graduated tube. The beneficial effects are that: the lithium content in the whole battery can be specifically quantified through lossy disassembly, and meanwhile, the method has the characteristics of simplicity in operation and convenience in implementation, and has popularization value.
Description
Technical Field
The utility model belongs to the technical field of lithium batteries, and particularly relates to a lithium ion battery lossy lithium precipitation testing device.
Background
Battery capacity fade is a relatively common problem in battery failure, and capacity loss mostly corresponds to loss of reversible lithium ions in the battery. Pathways for lithium ion loss in batteries are involved in positive CEI film formation, negative SEI film formation, and lithium evolution. The lithium is separated from the battery as a phenomenon occurring in the battery, no better method exists for testing the lithium separation amount (dead lithium) in the whole battery at present, and only the severity of lithium separation of the negative electrode plate can be observed through disassembly, so that whether the lithium separation exists or not is qualitatively judged, and the lithium separation amount (dead lithium) is a parameter without specific quantification.
Disclosure of Invention
The utility model aims to solve the technical problems and provides the lithium ion battery lossy lithium precipitation testing device which can specifically quantify the content of lithium precipitation in the whole battery through lossy disassembly and has the characteristics of simplicity in operation and convenience in implementation, and has popularization value.
The technical scheme for solving the technical problems is as follows: the lithium ion battery damage lithium analysis amount testing device comprises: the device comprises a main body cavity cover, an objective table, an air pressure balance switch, a main body cavity and a scale tube, wherein the bottom of the main body cavity cover is connected with the objective table through a connecting rod, the main body cavity cover is connected with the main body cavity through threads, and the air pressure balance switch and the scale tube are arranged on the side wall of the main body cavity.
The beneficial effects are that: the lithium content in the whole battery can be specifically quantified through lossy disassembly, and meanwhile, the method has the characteristics of simplicity in operation and convenience in implementation, and has popularization value.
Preferably, an end of the connecting rod remote from the stage passes through and protrudes out of the body cavity cover.
Preferably, a fixing piece is arranged on one end of the connecting rod extending out of the main body cavity cover.
Preferably, the fixing member is a sealing bolt.
Preferably, a first sealing ring is arranged between the sealing bolt and the mounting hole of the main body cavity cover.
Preferably, the outer wall of the connecting rod and the inner ring of the first sealing ring can be connected in a sliding way through friction force.
Preferably, a second sealing ring is arranged between the main body cavity cover and the main body cavity.
Preferably, the body cavity is a cylindrical container.
Preferably, the objective table is provided with a plurality of water soaking holes.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
In the drawings, the list of components represented by the various numbers is as follows:
1. a connecting rod; 2. a sealing bolt; 3. a body cavity cover; 4. an objective table; 5. a second seal ring; 6. an air pressure balance switch; 7. a body cavity; 8. a scale tube; 9. a first seal ring.
Detailed Description
The principles and features of the present utility model are described below with reference to the drawings, the examples are illustrated for the purpose of illustrating the utility model and are not to be construed as limiting the scope of the utility model.
Examples
As shown in fig. 1, this embodiment provides a device for testing the amount of lithium ions damaged by lithium ion battery, including: the device comprises a main body cavity cover 3, an objective table 4, an air pressure balance switch 6, a main body cavity 7 and a scale tube 8, wherein the bottom of the main body cavity cover 3 is connected with the objective table 4 through a connecting rod 1, the main body cavity 7 is a cylindrical container, the main body cavity cover 3 is connected with the main body cavity 7 through threads, the air pressure balance switch 6 and the scale tube 8 are arranged on the side wall of the main body cavity 7, water is arranged in the main body cavity 7, and a small-multiplying power negative pole piece which is disassembled and collected after complete discharge is placed on the objective table 4.
In this embodiment, the one end that connecting rod 1 is kept away from objective table 4 is passed and is stretched out outside the main part chamber lid 3 and is connected with the mounting, the mounting is sealing bolt 2, is equipped with the mounting hole that is used for passing connecting rod 1 at main part chamber lid 3 specifically, is equipped with in the mounting hole with sealing bolt 2 complex screw thread, then sealing bolt 2 with be equipped with first sealing washer 9 between the mounting hole of main part chamber lid 3, the outer wall of connecting rod 1 with the accessible frictional force sliding connection of first sealing washer 9 inner circle further improves the leakproofness of device, guarantees test data's accuracy.
Preferably, a second sealing ring 5 is arranged between the main body cavity cover 3 and the main body cavity 7.
Preferably, the objective table 4 is provided with a plurality of water soaking holes, so that the contact with water can be quickened.
Working principle:
when the device is used, pure water is added into the main body cavity 7, then the negative pole piece which is disassembled and collected after the small multiplying power is completely discharged is placed on the objective table 4, then the connecting rod 1 which is connected with the objective table 4 passes through the main body cavity cover 3, the first sealing ring 9 is added into the mounting hole of the main body cavity cover 3, the objective table 4 is connected with the main body cavity cover 3 by screwing the sealing bolt 2 after the proper height is adjusted, specifically, the outer wall of the connecting rod 1 is tightly contacted with the inner ring of the first sealing ring 9, the connecting rod 1 and the first sealing ring 9 can be kept at different positions under the action of external force, and the friction force generated by tightly contacting the connecting rod 1 and the first sealing ring 9 is kept at the required position, so that the objective table 4 can be pushed up and down to be positioned at different depth positions and kept at the positions under the condition that sealing can be ensured; at this time, the objective table 4 is pushed up and down by the connecting rod 1, the fixed objective table 4 stretches into the main body cavity 7, the whole cavity is sealed by rotating the main body cavity cover 3, after the sealing is finished, the air pressure balance switch 6 is opened, the air pressure balance switch 6 is closed after the cavity is consistent with the external atmospheric pressure, the liquid level on the scale tube 8 is recorded, the connecting rod 1 is pushed to soak the objective table 4 in the main body cavity 7, after the pole piece and the pure water react completely, the liquid level is recorded, and the liquid level difference before and after the reaction is obtained.
The mole number of hydrogen generated by the reaction can be obtained according to P=pgh (P is pressure, ρliquid density, g is gravity acceleration, h is depth) and an ideal gas equation PV=nRT (P is pressure, V is gas volume, n is the amount of a substance of gas, R is mole gas constant, T is temperature), so that the amount of lithium precipitation (2Li+2H) 2 O＝2LiOH+H 2 )。
In the description of the present utility model, it should be understood that the terms "center", "length", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "inner", "outer", "peripheral side", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the system or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.
The foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model are intended to be included within the scope of the utility model.
Claims (9)
1. A lithium ion battery lossy lithium amount testing device, comprising:
the device comprises a main body cavity cover (3), an objective table (4), an air pressure balance switch (6), a main body cavity (7) and a scale tube (8), wherein the objective table (4) is connected to the bottom of the main body cavity cover (3) through a connecting rod (1), the main body cavity cover (3) is connected with the main body cavity (7) through threads, and the air pressure balance switch (6) and the scale tube (8) are arranged on the side wall of the main body cavity (7).
2. The lithium ion battery damage lithium precipitation testing device according to claim 1, wherein one end of the connecting rod (1) far away from the objective table (4) penetrates through and extends out of the main body cavity cover (3).
3. The lithium ion battery damage lithium analysis testing device according to claim 2, wherein a fixing piece is arranged on one end of the connecting rod (1) extending out of the main body cavity cover (3).
4. A lithium ion battery lossy lithium amount testing device according to claim 3, characterized in that the fixing member is a sealing bolt (2).
5. The lithium ion battery lossy lithium analysis amount testing device according to claim 4, wherein a first sealing ring (9) is arranged between the sealing bolt (2) and the mounting hole of the main body cavity cover (3).
6. The lithium ion battery damage lithium precipitation testing device according to claim 5, wherein the outer wall of the connecting rod (1) is in sliding connection with the inner ring of the first sealing ring (9) through friction force.
7. The lithium ion battery damage lithium analysis testing device according to any one of claims 1-6, wherein a second sealing ring (5) is arranged between the main body cavity cover (3) and the main body cavity (7).
8. The lithium ion battery damage analysis lithium amount testing device according to any one of claims 1 to 6, wherein the main body cavity (7) is a cylindrical container.
9. The lithium ion battery damage lithium precipitation testing device according to any of claims 1-6, wherein the objective table (4) is provided with a plurality of water immersion holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321173378.2U CN220064321U (en) | 2023-05-16 | 2023-05-16 | Lithium ion battery damage lithium analysis amount testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321173378.2U CN220064321U (en) | 2023-05-16 | 2023-05-16 | Lithium ion battery damage lithium analysis amount testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220064321U true CN220064321U (en) | 2023-11-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321173378.2U Active CN220064321U (en) | 2023-05-16 | 2023-05-16 | Lithium ion battery damage lithium analysis amount testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220064321U (en) |
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2023
- 2023-05-16 CN CN202321173378.2U patent/CN220064321U/en active Active
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