CN112798959A - Three-electrode testing device for lithium battery - Google Patents
Three-electrode testing device for lithium battery Download PDFInfo
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- CN112798959A CN112798959A CN202011609753.4A CN202011609753A CN112798959A CN 112798959 A CN112798959 A CN 112798959A CN 202011609753 A CN202011609753 A CN 202011609753A CN 112798959 A CN112798959 A CN 112798959A
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- accommodating groove
- metal
- lithium battery
- receiving groove
- groove
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/364—Battery terminal connectors with integrated measuring arrangements
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- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a lithium battery electrode testing device which comprises an anode accommodating groove, a cathode accommodating groove and a metal Li accommodating groove, wherein the anode accommodating groove and the cathode accommodating groove are respectively provided with a part adjacent to and parallel to the metal Li accommodating groove; gaps are arranged among the positive electrode accommodating groove, the negative electrode accommodating groove and the metal Li accommodating groove, and a diaphragm and electrolyte are arranged in the gaps. Therefore, the lithium battery electrode testing device can be flexibly combined into a half battery and a full battery based on the same anode material and cathode material, and all measurement items are based on the same material, so that the measurement consistency is high; simple structure easily assembles, improves measurement of efficiency.
Description
Technical Field
The invention relates to the field of lithium battery electrode performance testing, in particular to a lithium battery three-electrode testing device.
Background
The performance of the lithium battery mainly depends on the performance of the anode and the cathode of the lithium battery, at the present stage, in order to test the performance of the anode and the cathode, the anode and the cathode materials are mainly assembled into a button battery, namely, the anode material and the cathode material to be tested are cut into small wafers which are respectively used as the anode material of the button battery, the cathode material uniformly adopts metal Li, namely, in the test link, the anode material or the cathode material is the anode relative to the metal Li. After the button cell is assembled, various electrochemical performances of the button cell are tested, so that characteristic parameters of the anode material or the cathode material are obtained.
The prior art has the following problems:
1. the button cell assembly process is complex to control, and the assembly process can affect the test result;
2. the positive electrode material and the negative electrode material need to be tested separately, and when the positive electrode material and the negative electrode material are assembled into a full battery, the positive electrode material and the negative electrode material are not necessarily the parts for testing at that time, so that data obtained by measurement actually come from different test pieces, and the data uniformity is poor.
3. Three battery systems consisting of a three-electrode test system consisting of a positive pole piece, a negative pole piece and a lithium metal negative pole cannot be charged or discharged in real time, and the states of the positive pole piece, the negative pole piece and the lithium metal negative pole piece in the experimental process cannot be detected simultaneously.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: a three-electrode testing device for a lithium battery is provided.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a three-electrode testing device for a lithium battery comprises an anode accommodating groove, a cathode accommodating groove and a metal Li accommodating groove, wherein the anode accommodating groove and the cathode accommodating groove are respectively provided with a part adjacent to and parallel to the metal Li accommodating groove; gaps are arranged among the positive electrode accommodating groove, the negative electrode accommodating groove and the metal Li accommodating groove, and diaphragms and electrolyte are arranged in the gaps.
Compared with the prior art, the invention has the following technical effects:
the positive electrode material, the negative electrode material and the metal Li jointly form three battery bodies, when the positive electrode material and the metal Li are selected for testing, the characteristics of the positive electrode material can be tested, when the negative electrode material and the metal Li are selected, the characteristics of the negative electrode material can be tested, when the positive electrode material and the negative electrode material are selected, the characteristics of the positive electrode material and the negative electrode material when the positive electrode material and the negative electrode material are assembled together are directly measured.
On the basis of the technical scheme, the invention can be further improved as follows.
Preferably, the positive electrode accommodating groove, the negative electrode accommodating groove and the metal Li accommodating groove are in an L-shaped bending shape, the bending position of the positive electrode accommodating groove, the negative electrode accommodating groove and the metal Li accommodating groove forms a peak, the bending angle is 120 degrees, the peaks of the positive electrode accommodating groove, the negative electrode accommodating groove and the metal Li accommodating groove are close to each other, and the whole body is in a star shape.
Adopt above-mentioned further scheme's beneficial effect to be simple structure, the equipment is convenient.
Preferably, the positive electrode accommodating groove, the negative electrode accommodating groove and the metal Li accommodating groove are U-shaped, any two of the positive electrode accommodating groove, the negative electrode accommodating groove and the metal Li accommodating groove are buckled in a staggered mode, and the rest one groove is arranged on the outermost side to form a half-wrapping shape for the two grooves.
The beneficial effect of adopting above-mentioned further scheme is small, and space utilization is high.
Drawings
FIG. 1 is a schematic structural diagram of a lithium battery electrode testing device in embodiment 1;
FIG. 2 is a schematic structural diagram of a lithium battery electrode testing device in embodiment 2;
in the drawings, the parts names represented by the respective reference numerals are listed as follows:
1. a positive plate; 2. a negative plate; 3. a metal Li plate; 4. a diaphragm.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
Fig. 1 is a schematic structural diagram of a lithium battery electrode testing device in accordance with an embodiment 1 of the present invention. Lithium battery electrode testing arrangement, anodal storage tank, negative pole storage tank, metal Li storage tank are provided with the anodal panel 1 that awaits measuring in the anodal storage tank, are equipped with the negative pole panel 2 that awaits measuring in the negative pole storage tank, are equipped with metal Li panel 3 in the metal Li storage tank, are equipped with diaphragm 4 and electrolyte in the clearance that forms between each panel, and the anodal panel 1 that awaits measuring, the negative pole panel 2 that awaits measuring, metal Li panel 3 all are "L" the type of bending, and it forms the summit of department of bending, and the angle of bending is 120 degrees, the summits department of anodal storage tank, negative pole storage tank, metal Li storage tank leans on together.
Fig. 2 is a schematic structural diagram of a lithium battery electrode testing device in accordance with an embodiment 2 of the present invention. The lithium battery electrode testing device comprises an anode containing groove, a cathode containing groove and a metal Li containing groove, wherein an anode plate 1 to be tested is arranged in the anode containing groove, a cathode plate 2 to be tested is arranged in the cathode containing groove, a metal Li plate 3 is arranged in the metal Li containing groove, and a diaphragm 4 and electrolyte are arranged in a gap formed between the plates. The positive plate 1, the negative plate 2 and the metal Li plate 3 are all U-shaped, the negative plate 2 and the metal Li plate 3 are buckled together in an interlaced mode, the positive plate 1 is arranged on the outer sides of the negative plate 2 and the metal Li plate 3 to form a semi-wrapped shape, and a diaphragm 4 and electrolyte are arranged in gaps among the plates.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (3)
1. The lithium battery electrode testing device is characterized by comprising an anode accommodating groove, a cathode accommodating groove and a metal Li accommodating groove, wherein the anode accommodating groove and the cathode accommodating groove are respectively provided with a part adjacent to and parallel to the metal Li accommodating groove; gaps are arranged among the positive electrode accommodating groove, the negative electrode accommodating groove and the metal Li accommodating groove, and the gaps are used for storing the diaphragm and the electrolyte.
2. The lithium battery electrode testing device of claim 1, wherein the positive electrode receiving groove, the negative electrode receiving groove and the metal Li receiving groove are L-shaped, the bending positions thereof form a vertex, the bending angle is 120 degrees, and the vertices of the positive electrode receiving groove, the negative electrode receiving groove and the metal Li receiving groove are close together and form a star shape as a whole.
3. The lithium battery electrode testing device of claim 1, wherein the positive electrode receiving groove, the negative electrode receiving groove, and the metal Li receiving groove are U-shaped, any two of the positive electrode receiving groove, the negative electrode receiving groove, and the metal Li receiving groove are alternatively fastened, and the remaining one of the grooves is disposed at an outermost side to form a half-wrapping shape for the two grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011609753.4A CN112798959A (en) | 2020-12-30 | 2020-12-30 | Three-electrode testing device for lithium battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011609753.4A CN112798959A (en) | 2020-12-30 | 2020-12-30 | Three-electrode testing device for lithium battery |
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| Publication Number | Publication Date |
|---|---|
| CN112798959A true CN112798959A (en) | 2021-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202011609753.4A Pending CN112798959A (en) | 2020-12-30 | 2020-12-30 | Three-electrode testing device for lithium battery |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202949008U (en) * | 2012-11-13 | 2013-05-22 | 万向电动汽车有限公司 | Triple-electrode device of lithium ion battery |
| CN103500859A (en) * | 2013-09-26 | 2014-01-08 | 上海动力储能电池系统工程技术有限公司 | Three-electrode battery device for lithium ion battery |
| CN105308786A (en) * | 2013-06-20 | 2016-02-03 | Hrl实验室有限责任公司 | Battery with reference electrode for voltage monitoring |
| CN106340700A (en) * | 2016-11-05 | 2017-01-18 | 北京工业大学 | Three-electrode lithium air cell test die |
| CN106842059A (en) * | 2017-03-07 | 2017-06-13 | 河海大学常州校区 | Lithium battery both positive and negative polarity electrochemical properties on-line monitoring method based on three electrode measurements |
| CN107026282A (en) * | 2017-06-02 | 2017-08-08 | 中天储能科技有限公司 | A kind of lithium ion battery three-electrode system and its method of testing |
| CN108630980A (en) * | 2018-05-09 | 2018-10-09 | 合肥国轩高科动力能源有限公司 | A kind of three electrode soft-package battery of lithium ion and its test method |
| CN211206741U (en) * | 2019-09-26 | 2020-08-07 | 安徽泰能新能源科技有限公司 | Three-electrode testing system for cylindrical lithium ion battery |
-
2020
- 2020-12-30 CN CN202011609753.4A patent/CN112798959A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202949008U (en) * | 2012-11-13 | 2013-05-22 | 万向电动汽车有限公司 | Triple-electrode device of lithium ion battery |
| CN105308786A (en) * | 2013-06-20 | 2016-02-03 | Hrl实验室有限责任公司 | Battery with reference electrode for voltage monitoring |
| CN103500859A (en) * | 2013-09-26 | 2014-01-08 | 上海动力储能电池系统工程技术有限公司 | Three-electrode battery device for lithium ion battery |
| CN106340700A (en) * | 2016-11-05 | 2017-01-18 | 北京工业大学 | Three-electrode lithium air cell test die |
| CN106842059A (en) * | 2017-03-07 | 2017-06-13 | 河海大学常州校区 | Lithium battery both positive and negative polarity electrochemical properties on-line monitoring method based on three electrode measurements |
| CN107026282A (en) * | 2017-06-02 | 2017-08-08 | 中天储能科技有限公司 | A kind of lithium ion battery three-electrode system and its method of testing |
| CN108630980A (en) * | 2018-05-09 | 2018-10-09 | 合肥国轩高科动力能源有限公司 | A kind of three electrode soft-package battery of lithium ion and its test method |
| CN211206741U (en) * | 2019-09-26 | 2020-08-07 | 安徽泰能新能源科技有限公司 | Three-electrode testing system for cylindrical lithium ion battery |
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Application publication date: 20210514 |
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| RJ01 | Rejection of invention patent application after publication |