CN212433018U - Lithium ion battery infiltration effect quantization detection device - Google Patents
Lithium ion battery infiltration effect quantization detection device Download PDFInfo
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- CN212433018U CN212433018U CN202021044172.6U CN202021044172U CN212433018U CN 212433018 U CN212433018 U CN 212433018U CN 202021044172 U CN202021044172 U CN 202021044172U CN 212433018 U CN212433018 U CN 212433018U
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Abstract
A lithium ion battery infiltration effect quantitative detection device comprises a rack, a ray emitter, a ray detector and a mobile platform, wherein the ray emitter and the ray detector are oppositely arranged on the inner wall of the rack; a guide rail is arranged in the rack and is positioned below the ray emitter and the ray detector; the moving platform is connected to the guide rail, and an air cylinder and a clamping plate are arranged on the moving platform; the testing method belongs to nondestructive testing, a battery is equally divided into a plurality of areas along the length direction, weight data of the plurality of areas are tested through rays, and then the mean value significance difference of a plurality of groups of data is judged through variance analysis, so that whether the electrolyte is infiltrated fully or not is judged. The method is judged by weight data, and has high reliability and high production efficiency. In addition, the equipment can optimize the infiltration time and research the infiltration mechanism, and has important significance for production and research and development.
Description
Technical Field
The utility model belongs to the technical field of the battery detects, especially, relate to a lithium ion battery annotates liquid back infiltration effect quantization detection device.
Background
The infiltration process after the liquid injection of the lithium ion battery has a very important influence on the performance of the lithium ion battery, the insufficient infiltration can cause the lithium precipitation of the negative plate, the cycle life and the energy density of the battery are influenced, and the serious potential safety hazard exists. A method for effectively judging the infiltration effect after liquid injection is important for the production of lithium ion batteries.
Currently, the infiltration effect is ensured by controlling the infiltration time, the infiltration time is generally controlled to be 12-36h, the time is long, and the method belongs to a bottleneck process for the industrial production of the lithium ion battery. In addition, the judgment of the electrolyte infiltration effect is carried out by disassembling the electric core and carrying out human visual judgment, so that the reliability is lower, and the method belongs to destructive tests.
Chinese patent No. CN109975402A discloses a soft package lithium ion battery electrolyte nondestructive testing device, which is characterized in that, soft package lithium ion nondestructive testing device includes: the battery to be tested can be placed on the supporting device, and the positioning device is detachably connected with the supporting device and can be used for positioning four edges of the battery to be tested on the supporting device; the high-frequency ultrasonic scanning structure can be used for carrying out scanning test on the electrolyte infiltration of the battery.
The battery is fixedly arranged on the supporting device and is detected through high-frequency ultrasonic waves, so that the battery needs to be placed and fixed at a proper position, the battery is required to be detached after detection is completed, the battery needing to be detected is placed and fixed at a proper position, operation is complex, and detection efficiency is low.
SUMMERY OF THE UTILITY MODEL
The utility model relates to an overcome the defect among the above-mentioned prior art, provide a nondestructive test, simple structure detects efficient lithium ion battery and annotates the effect quantization detection device of infiltrating after annotating.
In order to achieve the above purpose, the utility model adopts the technical scheme that: a device for quantitatively detecting the infiltration effect of a lithium ion battery after liquid injection is characterized by comprising a rack, a ray emitter, a ray detector and a mobile platform, wherein the ray emitter and the ray detector are oppositely arranged on the inner wall of the rack; guide rails which are oppositely arranged are installed in the rack and are positioned below the ray emitter and the ray detector; the moving platform is connected to the guide rail, and the moving platform is provided with an air cylinder and a clamping plate.
As an optimized scheme of the utility model, line between ray emitter and the ray detector is perpendicular setting with the length direction of guide rail.
As a preferred scheme of the utility model, moving platform still includes the base, and the base is fixed to be set up on moving platform, and the cylinder is fixed to be set up on the base, and splint telescopic connection is on the cylinder.
As an optimized scheme of the utility model, the guide rail is the lead screw structure, moving platform and lead screw threaded connection.
As a preferred scheme of the utility model, the guide rail is bar structure, and the moving platform joint is on the guide rail, and one serves the motor that is equipped with and is connected with the base of guide rail.
As an optimized scheme of the utility model, splint are lamellar structure, and are formed with step-like structure on the splint, and the splint bottom links to each other with the cylinder.
As an optimized scheme of the utility model, be formed with buckle spare on the moving platform both ends, be formed with the guide rail with buckle spare looks adaptation on the inner wall of the relative both sides of frame.
As an optimized scheme of the utility model, pass through bolt fixed connection between ray emitter and ray detector and the frame.
As a preferred embodiment of the present invention, the radiation emitter emits X-rays or β -rays.
As an optimized scheme of the utility model, the frame is marble structure.
The beneficial effects of the utility model are that, compare with prior art: the test method belongs to nondestructive testing, and quantitatively judges whether the electrolyte is sufficiently infiltrated or not by testing the weight data of each partition of the battery. The testing method has high reliability and high production efficiency. The infiltration time can be optimized through the device, the infiltration mechanism can be researched, and the device has important significance for production and research and development. In addition, the battery is supported and moved by the frame, and the influence of external interference on the ray is reduced.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a front view of the present invention;
FIG. 3 is a schematic view of the connection of the mobile platform to the guide rails;
reference numbers in the figures: the device comprises a rack 1, a slide rail 1-1, a ray emitter 2, a ray detector 3, a guide rail 4, a moving platform 5, a base 5-1, a cylinder 5-2, a clamping plate 5-3 and a clamping piece 5-4.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the accompanying drawings.
As shown in fig. 1-3, a device for quantitatively detecting a wetting effect after liquid injection of a lithium ion battery comprises a rack 1, a ray emitter 2, a ray detector 3 and a mobile platform 5, wherein the ray emitter 2 and the ray detector 3 are oppositely arranged on the inner wall of the rack 1; a guide rail 4 is arranged in the rack 1, and the guide rail 4 is positioned below the ray emitter 2 and the ray detector 3; the moving platform 5 is connected on the guide rail 4, and the moving platform 5 is provided with a cylinder 5-2 and a clamping plate 5-3.
The rack 1 is a natural marble structure, and the ray emitter 2 and the ray detector 3 are oppositely and fixedly arranged on the rack 1.
The connecting line between the ray emitter 2 and the ray detector 3 is perpendicular to the length direction of the guide rail 4, the battery is placed at the top of the movable platform 5 and is clamped by the oppositely arranged clamping plates 5-3, the battery is arranged along the length direction of the guide rail 4, and the battery is always perpendicular to the ray between the ray emitter 2 and the ray detector 3.
The clamping plate 5-3 is of a sheet structure, a step-shaped structure is formed on the clamping plate 5-3, the size of the clamping plate 5-3 is designed according to the size of the battery, when the battery is clamped by the clamping plate 5-3, the bottom of the battery is placed on the step of the clamping plate 5-3, the side wall of the battery is abutted against the clamping plate 5-3, the clamping plate 5-3 arranged oppositely supports the battery, and the clamping plate 5-3 has a certain thickness, so that the battery has better stability in the moving process.
The moving platform 5 further comprises a base 5-1, the base 5-1 is fixedly arranged on the moving platform 5 through bolts, the air cylinder 5-2 is fixedly arranged on the base 5-1, the clamping plate 5-3 is connected to the air cylinder 5-2 in a telescopic mode, the base 5-1 is perpendicular to the moving direction of the clamping plate 5-3, and the moving direction of the clamping plate 5-3 is parallel to a connecting line between the ray emitter 2 and the ray detector 3.
The guide rail 4 can be a screw rod or a bar-shaped structure, when the guide rail 4 is of the screw rod structure, the moving platform 5 is in threaded connection with the screw rod, one side of the moving platform 5 abuts against the rack 1, a screw rod sliding block mechanism is formed under the action of the guide rail 4 and the moving platform 5, a motor is arranged at one end of the guide rail 4 and drives the screw rod to rotate, and the base 5-1 is in translational movement along the length direction of the screw rod.
When the guide rail 4 is a strip structure, the mobile platform 5 is connected to the guide rail 4 in a clamping manner, a driving motor connected with the mobile platform 5 is arranged at one end of the guide rail 4, and the driving motor drives the mobile platform 5 to move in a translation manner along the length direction of the guide rail 4.
The two ends of the mobile platform 5 are provided with the buckling parts 5-4, the inner walls of the two opposite sides of the rack 1 are provided with the sliding rails 1-1 matched with the buckling parts 5-4, and the arrangement of the sliding rails 1-1 and the buckling parts 5-4 ensures that the mobile platform 5 has better stability in the moving process.
The bottom parts of the ray emitter 2 and the ray detector 3 are fixedly connected with the frame 1 through bolts, the ray emitter 2 emits X rays or beta rays, and the principle of the X rays or the beta rays is that the X rays or the beta rays pass through the frame
Wherein I denotes the intensity of the radiation after it has passed through the material to be measured, I0The intensity of the ray before the ray passes through the tested material is shown, lambda represents the absorption coefficient of the material substance, and m represents the weight of the tested material.
The battery is equally divided into a plurality of areas along the length direction, the weight data of the areas are tested through rays, and then the mean significance difference of the data of the plurality of groups is judged through variance analysis. If the mean data has significant difference, the electrolyte infiltration inside the battery cell is not sufficient, otherwise, the battery cell is judged to be qualified.
The rack 1 can also be provided with a computer which is connected with the ray emitter 2 and the ray detector 3 and is used for observing the ray condition of the ray emitter 2 and the ray detector 3 passing through the battery, displaying the measured data in real time, analyzing whether the data is abnormal or not and carrying out visual management.
The ray emitter 2 is provided with a plurality of radiation sources arranged in parallel, so that the measurement precision is guaranteed, the specific number of the radiation sources can be set according to actual needs, and the ray detector 3 outputs signals to a computer to calculate the weight of a test area.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the reference numerals in the figures are used more here: the technical scheme includes that terms such as a rack 1, a sliding rail 1-1, a ray emitter 2, a ray detector 3, a guide rail 4, a moving platform 5, a base 5-1, a cylinder 5-2, a clamping plate 5-3, a clamping piece 5-4 and the like are used, but the possibility of using other terms is not excluded; these terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.
Claims (10)
1. The device for quantitatively detecting the infiltration effect of the lithium ion battery is characterized by comprising a rack (1), a ray emitter (2), a ray detector (3) and a movable platform (5), wherein the ray emitter (2) and the ray detector (3) are oppositely arranged on the inner wall of the rack (1); a guide rail (4) is installed in the rack (1), and the guide rail (4) is positioned below the ray emitter (2) and the ray detector (3); the moving platform (5) is movably connected to the guide rail (4), and the moving platform (5) is provided with an air cylinder (5-2) and a clamping plate (5-3).
2. The device for quantitatively detecting the infiltration effect of the lithium ion battery according to claim 1, wherein a connecting line between the ray emitter (2) and the ray detector (3) is arranged perpendicular to the length direction of the guide rail (4).
3. The device for quantitatively detecting the infiltration effect of the lithium ion battery according to claim 1, wherein the movable platform (5) further comprises a base (5-1), the base (5-1) is fixedly arranged on the movable platform (5), the cylinder (5-2) is fixedly arranged on the base (5-1), and the clamp plate (5-3) is telescopically connected to the cylinder (5-2).
4. The device for quantitatively detecting the infiltration effect of the lithium ion battery according to claim 3, wherein the guide rail (4) is of a screw rod structure, and the moving platform (5) is in threaded connection with the screw rod.
5. The device for quantitatively detecting the infiltration effect of the lithium ion battery according to claim 3, wherein the guide rail (4) is of a strip structure, the mobile platform (5) is clamped on the guide rail (4), and one end of the guide rail (4) is provided with a driving motor connected with the base (5-1).
6. The device for quantitatively detecting the infiltration effect of the lithium ion battery according to claim 1, wherein the clamping plate (5-3) has a sheet structure, a step-shaped structure is formed on the clamping plate (5-3), and the bottom of the clamping plate (5-3) is connected with the cylinder (5-2).
7. The device for quantitatively detecting the infiltration effect of the lithium ion battery according to claim 6, wherein the two ends of the movable platform (5) are provided with fasteners (5-4), and the inner walls of the two opposite sides of the frame (1) are provided with slide rails (1-1) matched with the fasteners (5-4).
8. The device for quantitatively detecting the infiltration effect of the lithium ion battery according to claim 1, wherein the radiation emitter (2) and the radiation detector (3) are fixedly connected with the frame (1) through bolts.
9. The device for quantitatively detecting the infiltration effect of lithium ion batteries according to claim 1, wherein the radiation emitter (2) emits X-rays or β -rays.
10. The device for quantitatively detecting the infiltration effect of the lithium ion battery according to claim 1, wherein the frame (1) has a marble structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021044172.6U CN212433018U (en) | 2020-06-09 | 2020-06-09 | Lithium ion battery infiltration effect quantization detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021044172.6U CN212433018U (en) | 2020-06-09 | 2020-06-09 | Lithium ion battery infiltration effect quantization detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212433018U true CN212433018U (en) | 2021-01-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021044172.6U Active CN212433018U (en) | 2020-06-09 | 2020-06-09 | Lithium ion battery infiltration effect quantization detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212433018U (en) |
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2020
- 2020-06-09 CN CN202021044172.6U patent/CN212433018U/en active Active
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