CN219871427U - Internal resistance testing device for lithium battery of automobile - Google Patents
Internal resistance testing device for lithium battery of automobile Download PDFInfo
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- CN219871427U CN219871427U CN202320504200.5U CN202320504200U CN219871427U CN 219871427 U CN219871427 U CN 219871427U CN 202320504200 U CN202320504200 U CN 202320504200U CN 219871427 U CN219871427 U CN 219871427U
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- test
- testing
- lithium battery
- internal resistance
- box
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- 238000012360 testing method Methods 0.000 title claims abstract description 174
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 70
- 238000001514 detection method Methods 0.000 claims abstract description 16
- 239000000565 sealant Substances 0.000 claims abstract description 10
- 238000009423 ventilation Methods 0.000 claims abstract description 10
- 230000000694 effects Effects 0.000 abstract description 6
- 230000017525 heat dissipation Effects 0.000 abstract description 5
- 238000007689 inspection Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
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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- Secondary Cells (AREA)
Abstract
An internal resistance testing device for an automobile lithium battery, comprising: the testing box is provided with a testing door and a door lock matched with the testing door at the front and/or back of the testing box, and a ventilation window is arranged at one side of the testing box; the lithium battery test device comprises a test platform, a lithium battery and a heat conduction pouring sealant, wherein the test platform is arranged at the bottom in a test box, the heat conduction pouring sealant is arranged between the test platform and the test box, a test groove is formed in the upper surface of the test platform, and the lithium battery is arranged on the test groove; the negative electrode touch plate is arranged on the upper surface of the test groove; and the positive electrode detection contact is arranged above the negative electrode touch plate and is opposite to the negative electrode touch plate. According to the internal resistance testing device for the lithium battery of the automobile, a closed testing environment is built through the testing box, so that the influence of external factors on a testing result is prevented; the heat-conducting pouring sealant is arranged between the test platform and the test box, and the heat dissipation effect is improved; electromagnetic interference can be avoided by using twisted pair shielding wires.
Description
Technical Field
The utility model relates to the technical field of testing, in particular to an internal resistance testing device for an automobile lithium battery.
Background
The power battery is a core technology in the development of new energy automobiles, the energy supply of the electric automobiles is mainly provided by the battery, the battery cost is a high proportion, and the battery system is a main embodiment of the automobile performance. The lithium battery has the advantages of light weight, high working voltage, no memory, high energy density, low cost, good performance, long cycle life and small white discharge rate, and has been widely used in electric automobiles. In order to fully exert the maximum performance of the lithium battery system, the efficiency and the service life of the lithium battery are improved, meanwhile, the safety of a vehicle is ensured, and the health state of the lithium battery needs to be detected.
Currently, the definition of the health state of a lithium battery is not unified, and the definition approved by a learner mainly comprises 4 kinds: charge capacity, discharge capacity, internal dc resistance, and remaining life. The experimental result shows that the health state of the lithium battery can be judged by measuring the low-frequency impedance and the direct-current internal resistance. For example, chinese patent application No. CN202221594210.4 discloses a voltage internal resistance test device for lithium ion batteries, chinese patent application No. CN202220961812.2 discloses a lithium battery pack ac internal resistance test DB line, and so on.
Therefore, the utility model aims to provide the internal resistance testing device of the automobile lithium battery with another structure, which constructs a closed testing environment, prevents external factors from influencing testing results, has longer service life and can be suitable for testing lithium batteries with different specifications.
Disclosure of Invention
The utility model aims to: in order to overcome the defects, the utility model aims to provide the internal resistance testing device for the lithium battery of the automobile, which is reasonable in design, builds a closed testing environment through a testing box, prevents external factors from influencing testing results, improves the durability of the testing device, is longer in service life, can clamp and fix lithium batteries of different types through a limiting assembly, avoids shaking the lithium batteries in the testing process, influences the testing results and has wide application prospect.
The technical scheme is as follows: an internal resistance testing device for an automobile lithium battery, comprising:
the testing box is provided with a testing door and a door lock matched with the testing door at the front and/or back of the testing box, and a ventilation window is arranged at one side of the testing box;
the lithium battery test device comprises a test platform, a lithium battery and a heat conduction pouring sealant, wherein the test platform is arranged at the bottom in a test box, the heat conduction pouring sealant is arranged between the test platform and the test box, a test groove is formed in the upper surface of the test platform, and the lithium battery is arranged on the test groove;
the negative electrode touch plate is arranged on the upper surface of the test groove;
the positive electrode detection contact is arranged above the negative electrode touch plate and is opposite to the negative electrode touch plate;
the hydraulic cylinder is arranged at the top outside the test box, and the output end of the hydraulic cylinder penetrates through the top of the test box;
the positive electrode detection contact is arranged at the output end of the hydraulic cylinder through the mounting piece;
the voltage internal resistance tester is embedded on the other side surface of the test box, and the negative electrode touch plate and the positive electrode detection contact are respectively connected with the voltage internal resistance tester through twisted pair shielding wires.
The internal resistance testing device for the lithium battery of the automobile is reasonable in design, the lithium battery to be tested is placed in the testing groove, the negative electrode of the lithium battery is contacted with the negative electrode touch plate, the hydraulic cylinder drives the positive electrode detection contact to move up and down, the negative electrode touch plate and the positive electrode detection contact are connected with the voltage internal resistance tester through the twisted pair shielding wire, when the positive electrode detection contact moves to be contacted with the positive electrode of the lithium battery, the voltage internal resistance of the lithium battery can be tested, a testing result is displayed on the voltage internal resistance tester, the operation is simple, and the testing speed is high.
The test box is used for building a closed test environment, so that the influence of external factors on a test result is prevented, the durability of the test device is improved, and the service life is longer; the heat-conducting pouring sealant is arranged between the test platform and the test box, and the ventilation window is arranged on one side surface of the test box, so that the heat dissipation effect can be improved; the negative electrode touch plate and the positive electrode detection contact voltage internal resistance tester are connected by adopting the twisted pair shielding wire, so that electromagnetic interference can be avoided.
Further, in the internal resistance testing device for the lithium battery of the automobile, the dustproof net is arranged on one side, close to the inside of the testing box, of the ventilating window.
Under the dustproof effect of dust screen, ventilation window carries out ventilation heat dissipation to the test box inside.
Further, in the above-mentioned internal resistance testing device for the lithium battery of the automobile, the test door is provided with an observation window.
The observation window is arranged on the test door, and the observation window adopts glass, so that the inside of the test box can be observed under the condition that the test door is not opened.
Further, the device for testing the internal resistance of the lithium battery of the automobile further comprises:
and the limiting assembly is arranged on the test platform and used for limiting the lithium battery in the test groove.
The lithium battery in the test groove is limited through the limiting component, so that the lithium battery is prevented from shaking or shifting during testing, and the test result is prevented from being influenced.
Further, the above-mentioned car lithium cell internal resistance testing arrangement, spacing subassembly includes:
the side surface of the test platform is provided with a through hole matched with the screw, and one end of the screw penetrates through the through hole and horizontally stretches into the test groove;
the knob is arranged at the other end of the screw rod;
and one end of the screw rod extending into the test groove is provided with a positioning plate.
The knob is rotated to drive the screw rod to rotate, so that the positioning plate is driven to move until the positioning plate limits the lithium battery in the test groove.
Further, the above-mentioned car lithium cell internal resistance testing arrangement, spacing subassembly still includes:
the screw sleeve is connected with one end of a screw rod extending into the test groove in a threaded manner, and the screw sleeve is provided with a positioning plate.
Further, according to the internal resistance testing device for the automobile lithium battery, the number of the screw rods, the number of the knob, the number of the positioning plates and the number of the thread sleeves are 4, and the screw rods, the knob, the positioning plates and the thread sleeves are respectively arranged in the middle of the 4 side faces of the testing platform.
Through 4 rotatory knobs, make 4 screw rods rotate, the rotation of screw rod makes the thread bush drive the locating plate motion, and is spacing until 4 locating plates are spacing with the four sides of the lithium cell in the test tank, through spacing subassembly, can press from both sides tightly fixedly to the lithium cell of different models, avoid the lithium cell to rock in the test process, influence test result.
The beneficial effects of the utility model are as follows: the internal resistance testing device for the lithium battery of the automobile is reasonable in design, a closed testing environment is built through the testing box, the influence of external factors on a testing result is prevented, the durability of the testing device is improved, and the service life is longer; the heat-conducting pouring sealant is arranged between the test platform and the test box, and the ventilation window is arranged on one side surface of the test box, so that the heat dissipation effect can be improved; the negative electrode touch plate and the positive electrode detection contact voltage internal resistance tester are connected by adopting the twisted pair shielding wire, so that electromagnetic interference can be avoided; can press from both sides tightly fixedly to the lithium cell of different models through spacing subassembly, avoid the lithium cell to rock in the test process, influence the test result, application prospect is extensive.
Drawings
FIG. 1 is an internal schematic diagram of an internal resistance testing device for an automotive lithium battery according to the present utility model;
fig. 2 is an external schematic view of an internal resistance testing device for an automotive lithium battery according to the present utility model;
FIG. 3 is a top view of a test platform of the internal resistance test device for the lithium battery of the automobile;
in the figure: test box 1, test door 11, observation window 111, lock 12, ventilation window 13, dust screen 14, test platform 2, heat conduction pouring sealant 21, test tank 22, negative electrode touch plate 3, anodal detection contact 4, pneumatic cylinder 5, installed part 6, voltage internal resistance tester 7, twisted pair shielded wire 71, spacing subassembly 8, screw 81, knob 82, locating plate 83, thread bush 84.
Detailed Description
The utility model will be further elucidated with reference to the figures 1-3 and the specific examples.
Example 1
As shown in fig. 1 and 2, the internal resistance testing device for the lithium battery of the automobile is used for testing the voltage internal resistance of the lithium battery, when the internal resistance testing device is used, the testing door 11 is opened, the lithium battery to be tested is placed in the testing groove of the testing platform 2, the negative electrode of the lithium battery is contacted with the negative electrode touch plate, the testing door 11 is closed, the hydraulic cylinder 5 drives the positive electrode detection contact 4 to move downwards, when the positive electrode detection contact 4 moves to be contacted with the positive electrode of the lithium battery, the hydraulic cylinder 5 stops, the voltage internal resistance tester 7 tests the voltage internal resistance of the lithium battery, the testing result is displayed on the voltage internal resistance tester 7, and the operation is simple and the testing speed is high.
The test box 1 builds a closed test environment, so that the influence of external factors on a test result is prevented, the durability of the test device is improved, and the service life is longer; the heat dissipation effect can be improved by arranging the ventilation window 13 on one side surface of the test box 1 and arranging the heat conduction pouring sealant 21 between the test platform 2 and the test box 1; by connecting the negative electrode contact plate 3, the positive electrode detection contact 4 and the voltage internal resistance tester 7 by the twisted pair shielded wire 71, electromagnetic interference can be avoided.
Example 2
The structural basis based on embodiment 1 above is shown in fig. 1 and 2.
According to the internal resistance testing device for the lithium battery of the automobile, the dustproof net 14 is arranged on one side, close to the inside of the testing box 1, of the ventilating window 13, and the ventilating window 13 ventilates and dissipates heat inside the testing box 1 under the dustproof effect of the dustproof net 14. The inspection window 111 is provided in the inspection door 11, and the inspection window 111 is made of glass, so that the inside of the inspection box 1 can be inspected without opening the inspection door 11.
Example 3
The structural basis based on embodiment 1 or embodiment 2 is shown in fig. 1, 2 and 3.
The internal resistance testing device for the lithium battery of the automobile further comprises a limiting component 8, wherein the limiting component 8 is used for limiting the lithium battery in the testing groove 22, so that the lithium battery is prevented from shaking or shifting during testing, and the testing result is prevented from being influenced.
The limiting component 8 comprises 4 screws 81, 4 knobs 82, 4 positioning plates 83 and 4 thread sleeves 84, the middle parts of the 4 sides of the testing platform 2 are respectively arranged, the 4 screws 81 are enabled to rotate by rotating the 4 knobs 82 respectively, the thread sleeves 84 are enabled to drive the positioning plates 83 to move by rotation of the screws 81 until the four sides of the lithium batteries in the testing groove are limited by the 4 positioning plates 83, and the lithium batteries of different models can be clamped and fixed through the limiting component 8.
The foregoing is merely a preferred embodiment of the utility model, and it should be noted that modifications could be made by those skilled in the art without departing from the principles of the utility model, which modifications would also be considered to be within the scope of the utility model.
Claims (7)
1. An internal resistance testing device for an automobile lithium battery, which is characterized by comprising:
the testing device comprises a testing box (1), wherein a testing door (11) and a door lock (12) matched with the testing door (11) are arranged on the front side and/or the back side of the testing box (1), and a ventilation window (13) is arranged on one side surface of the testing box (1);
the lithium battery test device comprises a test platform (2), wherein the test platform (2) is arranged at the inner bottom of a test box (1), a heat conduction pouring sealant (21) is arranged between the test platform (2) and the test box (1), a test groove (22) is formed in the upper surface of the test platform (2), and a lithium battery is arranged on the test groove (22);
the negative electrode touch plate (3), the negative electrode touch plate (3) is arranged on the upper surface of the test groove (22);
the positive electrode detection contact (4) is arranged above the negative electrode contact plate (3) and is opposite to the negative electrode contact plate (3);
the hydraulic cylinder (5) is arranged at the outer top of the test box (1), and the output end of the hydraulic cylinder (5) penetrates through the top of the test box (1);
the mounting piece (6), the mounting piece (6) is arranged at the bottom of the output end of the hydraulic cylinder (5), and the positive electrode detection contact (4) is arranged at the output end of the hydraulic cylinder (5) through the mounting piece (6);
the voltage internal resistance tester (7), voltage internal resistance tester (7) inlay and establish at test box (1) another side, negative electrode touch panel (3), anodal detection contact (4) are connected with voltage internal resistance tester (7) through twisted pair shielded wire (71) respectively.
2. The internal resistance testing device for the lithium battery of the automobile according to claim 1, wherein a dustproof net (14) is arranged on one side, close to the inside of the testing box (1), of the ventilation window (13).
3. The internal resistance testing device for the lithium battery of the automobile according to claim 1, wherein an observation window (111) is arranged on the testing door (11).
4. The internal resistance test device for a lithium battery of an automobile according to claim 1, further comprising:
the limiting assembly (8) is arranged on the test platform (2) and used for limiting the lithium battery in the test groove (22).
5. The internal resistance testing device for lithium batteries of automobiles according to claim 4, characterized in that said limiting assembly (8) comprises:
the screw rod (81), through hole (23) matched with the screw rod (81) is set on the side of the test platform (2), one end of the screw rod (81) penetrates through the through hole (23) and horizontally stretches into the test groove (22);
a knob (82), the knob (82) being provided at the other end of the screw (81);
and one end of the screw rod (81) extending into the test groove (22) is provided with a positioning plate (83).
6. The internal resistance testing device for lithium batteries of automobiles according to claim 5, characterized in that said limiting assembly (8) further comprises:
one end of a screw rod (81) extending into the test groove (22) is connected with the screw sleeve (84) in a threaded mode, and a locating plate (83) is arranged on the screw sleeve (84).
7. The internal resistance testing device for the lithium battery of the automobile according to claim 6, wherein the number of the screw (81), the knob (82), the positioning plate (83) and the threaded sleeve (84) is 4, and the screws are respectively arranged in the middle of the 4 side faces of the testing platform (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320504200.5U CN219871427U (en) | 2023-03-16 | 2023-03-16 | Internal resistance testing device for lithium battery of automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320504200.5U CN219871427U (en) | 2023-03-16 | 2023-03-16 | Internal resistance testing device for lithium battery of automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219871427U true CN219871427U (en) | 2023-10-20 |
Family
ID=88323085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320504200.5U Active CN219871427U (en) | 2023-03-16 | 2023-03-16 | Internal resistance testing device for lithium battery of automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219871427U (en) |
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2023
- 2023-03-16 CN CN202320504200.5U patent/CN219871427U/en active Active
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