CN219625661U - High-low temperature testing device for lithium ion battery - Google Patents
High-low temperature testing device for lithium ion battery Download PDFInfo
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- CN219625661U CN219625661U CN202223049810.5U CN202223049810U CN219625661U CN 219625661 U CN219625661 U CN 219625661U CN 202223049810 U CN202223049810 U CN 202223049810U CN 219625661 U CN219625661 U CN 219625661U
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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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Abstract
The utility model discloses a high-low temperature testing device for a lithium ion battery, which comprises a testing box body, wherein a plurality of battery shelving plates are arranged in the testing box body, the battery shelving plates are insulating plate bodies, and a plurality of airflow through holes are uniformly arranged on the insulating plate bodies at intervals. The high-low temperature testing device for the lithium ion battery has the characteristics of good insulation effect, uniform temperature and high operation convenience.
Description
Technical Field
The utility model relates to the technical field of lithium ion batteries, in particular to a high-low temperature testing device for a lithium ion battery.
Background
Lithium ion batteries are widely used in mobile phones, notebook computers, electric automobiles and the like, but the lithium batteries are easy to be "hit" when the temperature is too high or too low, and explosion and fire can be generated when the temperature is severe. The lithium ion battery is subjected to high and low temperature tests during production.
According to the requirements of GB/T18287, the testing method of the high-temperature performance of the lithium ion battery comprises the following steps: the battery is discharged according to the specification of 5.3.3 at 55 ℃ and 2 ℃, the discharging time is not less than 51min, and the appearance of the battery is free from deformation and explosion.
According to the requirements of GB/T18287, the testing method of the low-temperature performance of the lithium ion battery comprises the following steps: the battery is discharged according to the specification of 5.3.4 at the temperature of minus 20 ℃ and 2 ℃, the discharging time is not less than 3 hours, and the appearance of the battery is free from deformation and burst. For the polymer lithium ion battery, the battery is discharged according to 5.3.5 regulation at the temperature of minus 10 ℃ and 2 ℃, the discharging time is not less than 3.5 hours, and the appearance of the battery is free from deformation and burst.
At present, high-low temperature performance test of lithium ion batteries is mainly performed by adopting an explosion-proof box, a metal shelving layer is arranged in the explosion-proof box, and then the lithium ion batteries to be tested are placed on the metal shelving layer. However, since the lithium ion battery is generally a full-charge or charge-discharge process in the test, the battery is easily shorted at the time of high-low temperature test using the metal rest layer, resulting in test failure. Meanwhile, the explosion-proof box adopts the side of the quartz tube as a heat source, the metal shelving layer forms the physical barrier of heat flow, and the temperature uniformity in the test environment is limited.
Disclosure of Invention
The utility model aims to provide a high-low temperature testing device for a lithium ion battery, which has the characteristics of good insulation effect, uniform temperature and high operation convenience.
The utility model can be realized by the following technical scheme:
the utility model discloses a high-low temperature testing device for a lithium ion battery, which comprises a testing box body, wherein a plurality of battery shelving plates are arranged in the testing box body, the battery shelving plates are insulating plate bodies, and a plurality of airflow through holes are uniformly arranged on the insulating plate bodies at intervals.
Further, the airflow through holes are round holes or square holes, so that the processing is convenient, and the control is flexible.
Further, the insulating board body is a PVC plastic board, a PET plastic board, a PP plastic board, a PE plastic board or an ABS plastic board, and has wide sources and low cost.
Further, the airflow through holes are regularly aligned or staggered, so that more hot airflow heat transfer channels are formed, and the temperature uniformity is improved.
Further, the box body of the test box is provided with a box door which is movably opened, and a transparent visual window is arranged on the box door.
Further, a plurality of metal fixing frames are arranged in the test box body, and the battery rest plate is movably arranged on the metal fixing frames. Specifically, the metal fixing frame is U-shaped and protrudes and surrounds the inner wall of the box body.
Further, the lithium ion battery is a nickel cobalt manganese ternary battery, a lithium iron phosphate battery, a lithium manganate battery or a lithium cobaltate battery, and the testing requirements of different types of batteries are met.
Further, the lithium ion battery is a steel shell cylindrical battery, an aluminum shell battery or a soft package battery, so that the test requirements of different types of batteries are met.
Further, the box door and the box body of the test box are movably sealed to form a test cavity, so that a better explosion-proof test space is formed.
Further, the insulating plate body is formed by integral injection molding, and the processing is convenient. The airflow through holes can be integrally processed along with the insulating plate body, and can also be directly punched and formed on the insulating plate body.
The high-low temperature testing device for the lithium ion battery has the following beneficial effects:
firstly, the insulation effect is good, and by adopting the insulation board body as the battery placing board, the short circuit caused by the contact between the anode and the cathode of the lithium ion battery and the metal board body is effectively avoided, so that the insulation safety is excellent;
secondly, the temperature uniformity is good, and through the arrangement of the airflow through holes on the insulating plate body, the airflow through holes form a transmission channel of temperature airflow, so that the temperatures of the upper layer and the lower layer in the test box body are basically the same, and the temperature uniformity in the test environment is ensured;
third, the simple operation nature is high, and this testing arrangement's insulation board body can wholly be followed the test box and is shifted out, and the test is accomplished rapidly and directly perceivedly and is operated the test process, effectively simplifies operation process.
Drawings
FIG. 1 is a schematic diagram of a cross-sectional structure of a test box body of a high-low temperature test device for lithium ion batteries;
FIG. 2 is a schematic diagram of a foam shield structure of a lithium ion battery high and low temperature testing device according to the present utility model;
the labels in the drawings include: 100. a case; 110. a fixed frame; 120. a battery rest plate; 121. and an airflow through hole.
Detailed Description
In order to make the technical solution of the present utility model better understood by those skilled in the art, the following further details of the present utility model will be described with reference to examples and drawings.
As shown in fig. 1-2, the utility model discloses a high-low temperature testing device for lithium ion batteries, which comprises a testing box body 100, wherein a plurality of battery rest plates 120 are arranged in the testing box body, the battery rest plates 120 are insulating plate bodies, and a plurality of airflow through holes 121 are uniformly arranged on the insulating plate bodies at intervals.
In the present utility model, the air flow holes 121 are circular holes or square holes, and the air flow holes 121 are regularly aligned or staggered. A circular hole is shown in fig. 2, but the specific shape thereof is not limited thereto. In the arrangement, although an alignment arrangement is shown in fig. 2, a dislocation arrangement has the same effect.
Further, the insulating board body is a PVC plastic board, a PET plastic board, a PP plastic board, a PE plastic board or an ABS plastic board.
Further, the box body of the test box is provided with a box door which is movably opened, and a transparent visual window is arranged on the box door.
As shown in fig. 1, a plurality of metal fixing frames 110 are disposed in the test box body 100, and a battery rest plate 120 is movably disposed on the metal fixing frames 110.
Further, the lithium ion battery is a nickel cobalt manganese ternary battery, a lithium iron phosphate battery, a lithium manganate battery or a lithium cobaltate battery.
Further, the lithium ion battery is a steel shell cylindrical battery, an aluminum shell battery or a soft package battery.
Further, the box door and the box body of the test box are movably sealed to form a test cavity.
Further, the insulating plate body is integrally injection molded.
Example 1
Specifically, holes are uniformly punched on a solid insulating plate body with the length of 42cm, the width of 32cm and the thickness of 0.44cm, the punching diameter of 0.12cm and the punching number of 11 x 17 are used for enabling high (low) temperature air flow to be smoothly dispersed into a box through air holes, enabling the upper layer temperature and the lower layer temperature to be the same, and enabling the high and low temperature test conditions of the battery to be consistent.
Example 2
In order to effectively solve the problem of testing temperature environment, a solid insulating plate body with the length of 42cm, the width of 32cm and the thickness of 0.44cm is used as a placement layer on the basis of a metal partition plate. The insulating board has played good insulating effect, however because the metal baffle obstructs the circulation of the incasement air current, makes the temperature distribution about the incasement inhomogeneous, leads to test condition inconsistent, influences the test result. In order to solve the problem of uneven temperature distribution in the test box, namely, holes are uniformly drilled in the insulating plate body, the diameter of the holes is 0.12cm, and the number of the holes is 11 x 17, so that high (low) temperature air flow can be smoothly and uniformly dispersed into the box through air holes, the temperatures of the upper layer and the lower layer are the same, and the test conditions are consistent.
Example 3
To derive the relationship between the temperature in the device and the solid insulating plate body and perforated insulating plate body (perforation numbers 10 x 10, 10 x 15, 11 x 17, 15 x 17, respectively) and the temperature, a control test was performed as follows.
A first group: test 80.00 ℃ high Wen Duibi; second group: testing low temperature contrast at 10.00 ℃; third group: test-10.00 ℃ low temperature contrast.
The test results are shown in the following table:
by comparison, the following test results can be formed:
1. using the in-box temperature test comparison of the solid insulation board placement layer and the perforated insulation board placement layer, the following conclusions can be drawn:
a first group: when the set temperature reaches 80.00 ℃, the actual average temperature in the box and the difference between the actual average temperature and the set temperature are as follows:
A. the solid insulating plate is 78.10 ℃ and the temperature difference is 1.5-2.0 ℃;
B. 10 x 10 insulating plates at 79.00 ℃ with a temperature difference of 1.2-1.0 ℃;
C. 10 x 15 insulating plates, 79.40 ℃, and the temperature difference is 1.0-0.6 ℃;
D. 11 x 17 insulating plates: 79.75 ℃, and the temperature difference is less than 0.3 ℃;
E. 11 x 17 insulating plates: 79.73 ℃ and the temperature difference is less than 0.3 ℃.
Experimental effect: d=e > C > B > a
(2) Second group: when the set temperature reaches 10.00 ℃, the actual average temperature in the box is as follows:
A. the solid insulating board is at 11.68 ℃ and the temperature difference is 1.0-1.6 ℃;
B. 10 x 10 insulating plates at 10.66 ℃ with a temperature difference of 0.8-0.5 ℃;
C. 10 x 15 insulating plates at 10.40 ℃ with a temperature difference of 0.7-0.5 ℃;
D. 11 x 17 insulating plates: 10.14 ℃ and the temperature difference is less than 0.2 ℃;
E. 15 x 17 insulating plates: the temperature difference is less than 0.2 ℃ at 10.12 ℃.
Experimental effect: d=e > C > B > a
(3) Third group: when the set temperature reaches-10.00 ℃, the actual average temperature in the box is as follows:
A. the solid insulating board is at the temperature of-7.96 ℃ and the temperature difference is 1.6-2.1 ℃;
B. 10 x 10 insulating plates, wherein the temperature difference is 1.2-0.8 ℃ at-8.78 ℃;
C. 10 x 15 insulating plates, wherein the temperature difference is 0.9-0.7 ℃ at-9.16 ℃;
D. 11 x 17 insulating plates: -9.73 ℃, the temperature difference being less than 0.3 ℃;
E. 15 x 17 insulating plates: -9.75 ℃ and the temperature difference is less than 0.3 ℃.
Experimental effect: d=e > C > B > a
By combining the above, the comparison results: the actual temperature of the solid insulating plate is 1.5-2 ℃ different from the set temperature, and the temperature difference in the box is the largest. The main reason is that the upper and lower layers of high (low) temperature air flow is blocked, the temperature distribution in the box is uneven, the temperature difference between the upper and lower layers is large, the testing conditions are inconsistent, and the testing result is affected. The difference between the actual average temperature and the set temperature in the box using 10 x 10 and 10 x 15 insulating plates is 1.1-0.5 ℃, and the difference between the actual average temperature and the set temperature is still larger. Because fewer air holes and unsmooth air flow circulation are caused, the temperature distribution in the box is uneven, and the storage and discharge test results of the battery are deviated. The actual temperature of the insulating plates with holes punched at 11 x 17 and 15 x 17 is less than 0.3 ℃ with the set temperature, and the actual temperature is closest to the set temperature. And the comparison of actual battery storage test results shows that the high (low) temperature air flow of the insulating plates with holes punched at 11 x 17 and 15 x 17 can smoothly pass through the air holes and uniformly spread into the box, the temperature difference between the upper layer and the lower layer is minimum (negligible below 0.3 ℃), and the test result is optimal. In addition, since the test effects of the insulating plates with holes punched at 11×17 and 15×17 are close, the insulating plate with holes punched at 11×17 is selected as the optimal technical scheme for considering the cost.
In the description of the present utility model, it should be understood that the terms such as "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to 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.
Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly 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; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. 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.
The foregoing examples are merely exemplary embodiments of the present utility model, which are described in more detail and are not to be construed as limiting the scope of the utility model. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the spirit of the utility model, and that these obvious alternatives fall within the scope of the utility model.
Claims (8)
1. The utility model provides a lithium ion battery high low temperature testing arrangement, includes test box, its characterized in that: a plurality of battery rest plates are arranged in the test box body, the battery rest plates are insulating plate bodies, and a plurality of airflow through holes are uniformly arranged on the insulating plate bodies at intervals; the air flow holes are round holes or square holes, and are regularly aligned or staggered.
2. The lithium ion battery high-low temperature test device according to claim 1, wherein: the insulating board body is PVC plastic board, PET plastic board, PP plastic board, PE plastic board or ABS plastic board.
3. The lithium ion battery high-low temperature test device according to claim 2, wherein: the box body of the test box is provided with a box door which is movably opened, and a transparent visual window is arranged on the box door.
4. The lithium ion battery high-low temperature test device according to claim 3, wherein: the test box body is internally provided with a plurality of metal fixing frames, and the battery shelving plate is movably arranged on the metal fixing frames.
5. The lithium ion battery high and low temperature test device according to claim 4, wherein: the lithium ion battery is a nickel cobalt manganese ternary battery, a lithium iron phosphate battery, a lithium manganate battery or a lithium cobaltate battery.
6. The lithium ion battery high and low temperature test device according to claim 5, wherein: the lithium ion battery is a steel shell cylindrical battery, an aluminum shell battery or a soft package battery.
7. The lithium ion battery high and low temperature test device according to claim 5 or 6, wherein: the box door and the box body of the test box are movably sealed to form a test cavity.
8. The lithium ion battery high and low temperature test device according to claim 7, wherein: the insulating plate body is formed by integral injection molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223049810.5U CN219625661U (en) | 2022-11-16 | 2022-11-16 | High-low temperature testing device for lithium ion battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223049810.5U CN219625661U (en) | 2022-11-16 | 2022-11-16 | High-low temperature testing device for lithium ion battery |
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| Publication Number | Publication Date |
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| CN219625661U true CN219625661U (en) | 2023-09-01 |
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| CN202223049810.5U Active CN219625661U (en) | 2022-11-16 | 2022-11-16 | High-low temperature testing device for lithium ion battery |
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- 2022-11-16 CN CN202223049810.5U patent/CN219625661U/en active Active
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