CN210400665U - Device for on-line measuring expansion force distribution of lithium ion battery - Google Patents
Device for on-line measuring expansion force distribution of lithium ion battery Download PDFInfo
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- CN210400665U CN210400665U CN201921618082.0U CN201921618082U CN210400665U CN 210400665 U CN210400665 U CN 210400665U CN 201921618082 U CN201921618082 U CN 201921618082U CN 210400665 U CN210400665 U CN 210400665U
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Abstract
The utility model provides a device that on-line measurement lithium ion battery bulging force distributes, including anchor clamps mechanism, scanner, PC, anchor clamps mechanism be provided with pressure sensor and pressure measurement film, pressure sensor pass through the circuit with PC link to each other, the pressure measurement film with the scanner cooperate, the scanner pass through the circuit with PC link to each other. On-line measurement lithium ion battery bulging force distribution's device adopt the scanner can realize real-time scanning ressure measurement film image to image transmission in the PC storage, realize the process control that the bulging force distributes, and the image automatic transmission, the storage that the scanner gathered, can carry out retrospective analysis of later stage data, adopted pressure sensor, make PC can carry out comparative analysis with the data that the scanning ressure measurement film obtained.
Description
Technical Field
The utility model belongs to the lithium ion battery field especially relates to a device that on-line measurement lithium ion battery bulging force distributes.
Background
As an effective electric energy storage device, the lithium ion battery has the advantages of high energy density, large specific power, high output voltage, small self-discharge, long service life and the like, and is widely applied to the fields of electric automobiles, electronic products and the like. However, in the electrochemical cycle process, the volume expansion and contraction of the electrode material can be caused by the lithium ion deintercalation process, and the deformation of the whole battery can be caused by the gas generation and heat generation phenomena in the battery, and the deformation is mainly in the thickness direction. When the lithium ion battery is used as a power supply, the lithium ion battery needs to be connected in series and parallel into a group and packaged by a structural member to meet the requirement. The packaging after grouping needs to consider not only the strength and deformation of the structure, but also the influence of the expansion force generated in the battery charging and discharging process on the battery performance and safety. Therefore, it is necessary to test and analyze the expansion force generated during the charging and discharging process of the lithium ion battery to research the safety performance of the battery.
At present, for measuring the expansion force of a lithium ion battery, generally, only the overall expansion force of a battery cell or a module can be measured, but the distribution condition of the expansion force cannot be measured. And the charge-discharge process is long in time consumption, most of the existing measuring equipment can only measure one group of data at a time, and the real-time expansive force of the single battery or the module in the charge-discharge process is difficult to monitor.
Disclosure of Invention
In view of this, the utility model aims at providing a device that on-line measurement lithium ion battery expansibility distributes, real-time supervision expansibility carries out the analysis.
In order to achieve the above purpose, the technical scheme of the utility model is realized like this:
a device for measuring expansion force distribution of a lithium ion battery on line comprises a clamp mechanism, a scanner and a PC (personal computer), wherein the clamp mechanism is provided with a pressure sensor and a pressure measurement film, the pressure sensor is connected with the PC through a line, the pressure measurement film is matched with the scanner, and the scanner is connected with the PC through a line;
the clamp mechanism is provided with a rear end plate, a base, a plurality of guide columns, a servo electric cylinder, a second movable plate, a first movable plate and a front end plate, wherein the rear end plate and the front end plate are fixed on the base and are respectively positioned at two ends of the base, one end of each guide column is fixed on the rear end plate, the other end of each guide column sequentially penetrates through the second movable plate and the first movable plate and is fixed on the front end plate, one end of the servo electric cylinder is connected with the rear end plate, the other end of the servo electric cylinder is connected with the second movable plate, the servo electric cylinder is connected with the PC through a circuit, and a battery to be tested is fixed between the first movable plate and the front end plate.
Further, the pressure sensor is located between the first movable plate and the second movable plate.
Furthermore, the pressure measurement film is positioned between the battery to be measured and the front end plate.
Furthermore, the device for measuring the expansion force distribution of the lithium ion battery on line is also provided with a plurality of slide rails, one ends of the slide rails are fixed on the rear end plate, and the other ends of the slide rails sequentially penetrate through the second movable plate and the first movable plate and are fixed on the front end plate.
Furthermore, the slide rail is of a smooth cylindrical structure.
Further, the size of the front end plate is the same as that of the rear end plate, the height of the front end plate is larger than that of the battery to be tested, and the length of the front end plate is larger than that of the battery to be tested.
Furthermore, the lengths of the first movable plate, the second movable plate and the pressure measurement film are all larger than the length of the battery to be measured and smaller than the length of the front end plate; the heights of the first movable plate, the second movable plate and the pressure measurement film are all larger than the height of the battery to be measured and smaller than the height of the front end plate.
Furthermore, the rear end plate, the front end plate, the first movable plate and the second movable plate are all made of transparent insulating materials.
Furthermore, the rear end plate, the front end plate, the first movable plate and the second movable plate are all made of glass fiber reinforced plastics.
Furthermore, the rear end plate, the front end plate, the first movable plate and the second movable plate are all parallel to each other.
The battery to be tested is at least one of a square aluminum shell single battery, a soft package single battery, a square aluminum shell module or a soft package module.
The pressure measurement film is selected from LW, LLW or LLLW.
Compared with the prior art, the device for on-line measurement of the expansion force distribution of the lithium ion battery has the following advantages:
on-line measurement lithium ion battery bulging force distribution's device adopt the scanner can realize real-time scanning ressure measurement film image to image transmission in the PC storage, realize the process control that the bulging force distributes, and the image automatic transmission, the storage that the scanner gathered, can carry out the analysis of traceing back of later stage data, adopted pressure sensor simultaneously, make the PC can carry out the comparative analysis with the data that the scanning ressure measurement film obtained.
Drawings
The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention without undue limitation. In the drawings:
fig. 1 is a schematic view of a clamping mechanism according to an embodiment of the present invention.
Description of reference numerals:
1-rear end plate; 2-a base; 3-a guide pillar; 4-a slide rail; 5-servo electric cylinder; 6-a second movable plate; 7-a pressure sensor; 8-a first flap; 9-a battery to be tested; 10-pressure measurement film; 11-front end plate.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in fig. 1, an apparatus for online measurement of expansion force distribution of a lithium ion battery includes a fixture mechanism, a scanner, and a PC, wherein the fixture mechanism is provided with a pressure sensor 7 and a pressure measurement film 10, the pressure sensor 7 is connected with the PC through a line, the pressure measurement film 10 is matched with the scanner, the scanner is connected with the PC through a line, the scanner scans and acquires information about the pressure measurement film 10, and the PC stores information output from the scanner and the pressure sensor 7 and analyzes the expansion force distribution according to an image of the pressure measurement film 10;
the clamp mechanism is provided with a rear end plate 1, a base 2, 2 guide posts 3, a servo electric cylinder 5, a second movable plate 6, a first movable plate 8 and a front end plate 11, wherein the rear end plate 1 and the front end plate 11 are both fixed on the base 2, and are respectively positioned at two ends of the base 2, one end of the guide post 3 is fixed on the rear end plate 1, the other end passes through the second movable plate 6 and the first movable plate 8 in sequence, and fixed on the front end plate 11, one end of the servo electric cylinder 5 symmetrically and uniformly distributed on the rear end plate 1, the second movable plate 6 and the first movable plate 8 of the guide post 3 is connected with the rear end plate 1, the other end is connected with the second movable plate 6, the servo electric cylinder 5 is connected with the PC through a circuit, and the battery 9 to be tested is fixed between the first movable plate 8 and the front end plate 11. The pressure sensor 7 is located between the first movable plate 8 and the second movable plate 6. The pressure measurement film 10 is positioned between the battery 9 to be measured and the front end plate 11.
The device for measuring the expansion force distribution of the lithium ion battery on line is also provided with 4 sliding rails 4, one ends of the sliding rails 4 are fixed on the rear end plate 1, and the other ends of the sliding rails 4 sequentially penetrate through the second movable plate 6 and the first movable plate 8 and are fixed on the front end plate 11. The slide rail 4 is a smooth, burr-free and rust-proof cylinder. The aluminum alloy can be used for manufacturing, and the influence of the friction force of the battery 9 to be tested on the test result can be reduced.
The size of front end plate 11 and back end plate 1 the same, front end plate 11 highly be greater than the height of the battery 9 that awaits measuring, front end plate 11 length be greater than the length of the battery 9 that awaits measuring. The lengths of the first movable plate 8, the second movable plate 6 and the pressure measurement film 10 are all larger than the length of the battery 9 to be measured and smaller than the length of the front end plate 11; the heights of the first movable plate 8, the second movable plate 6 and the pressure measurement film 10 are all larger than the height of the battery 9 to be measured and smaller than the height of the front end plate 11. Neither the first flap 8 nor the second flap 6 is in contact with the base 2. The method can be selected according to measurement accuracy and historical data of the expansion force of the battery in the charging and discharging process. The pressure measurement film 10 can be only flatly placed on one side of the lithium battery close to the end plate, and can also be flatly placed on two sides of the lithium battery close to the end plate and the first movable plate 8 respectively. The pressure sensors 7 are fixedly arranged at four corners and central points of the first movable plate 8, which are opposite to the battery 9 to be tested, and are uniformly and symmetrically distributed, and are used for monitoring the clamping pressure applied to each part of the battery 9 to be tested, and realizing electric connection with a PC through cables.
The rear end plate 1, the front end plate 11, the first movable plate 8 and the second movable plate 6 are all made of glass fiber reinforced plastics. The rear end plate 1, the front end plate 11, the first movable plate 8 and the second movable plate 6 are all parallel to each other. The four plates are arranged oppositely, the end plates are transparent, and the scanner can directly scan the pressure measurement film 10, so that the trouble of disassembly and assembly is avoided, and the functions of real-time scanning and process data acquisition of the scanner are realized.
The battery 9 to be measured is a square aluminum shell module, and the pressure measurement film 10 is of the type LLLW. The PC is of a model of an association M415, a Fujifilm FPD-8010E pressure image analysis system is installed, the pressure sensor 7 is of a model of a Scotop SBT674, and the scanner is of an Epson Perfection V600.
The PC, the pressure measurement film 10, the pressure sensor 7, the scanner and the servo electric cylinder 5 are all in the prior art, and the direct connection of the PC, the pressure measurement film 10, the pressure sensor 7, the scanner and the servo electric cylinder 5 is all connected by adopting the prior art.
The implementation mode is as follows:
(1) installing a pressure measurement film 10 and a battery 9 to be measured between a front end plate 11 and a first movable plate 8 and placing the pressure measurement film and the battery on a sliding rail 4;
(2) setting the moving stroke of the servo electric cylinder 5 through a PC (personal computer), enabling the pressure measurement film 10 to be in surface contact with the battery 9 to be measured and the front end plate 11, and enabling the pressure sensor 7 to display a numerical value between 0 and 1N;
(3) the mounted battery 9 to be measured expands in the charging and discharging process, pressure is applied to the pressure measurement film 10, the pressure measurement film 10 is pressed and then develops color, the scanner automatically scans the image of the pressure measurement film 10 in real time and transmits the image to the PC for storage;
(4) the stored images of the pressure measurement film 10 at different time periods are analyzed using an expansive force image analysis system in the PC and the test analysis results are automatically stored.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a device that online measurement lithium ion battery expansive force distributes which characterized in that: the pressure measurement device comprises a clamp mechanism, a scanner and a PC, wherein the clamp mechanism is provided with a pressure sensor and a pressure measurement film, the pressure sensor is connected with the PC through a line, the pressure measurement film is matched with the scanner, and the scanner is connected with the PC through a line;
the clamp mechanism is provided with a rear end plate, a base, a plurality of guide columns, a servo electric cylinder, a second movable plate, a first movable plate and a front end plate, wherein the rear end plate and the front end plate are fixed on the base and are respectively positioned at two ends of the base, one end of each guide column is fixed on the rear end plate, the other end of each guide column sequentially penetrates through the second movable plate and the first movable plate and is fixed on the front end plate, one end of the servo electric cylinder is connected with the rear end plate, the other end of the servo electric cylinder is connected with the second movable plate, the servo electric cylinder is connected with the PC through a circuit, and a battery to be tested is fixed between the first movable plate and the front end plate.
2. The device for on-line measurement of expansion force distribution of lithium ion battery according to claim 1, wherein: the pressure sensor is positioned between the first movable plate and the second movable plate.
3. The device for on-line measurement of expansion force distribution of lithium ion battery according to claim 1, wherein: the pressure measurement film is positioned between the battery to be measured and the front end plate.
4. The device for on-line measurement of expansion force distribution of lithium ion battery according to claim 1, wherein: the device for measuring the expansion force distribution of the lithium ion battery on line is also provided with a plurality of sliding rails, one ends of the sliding rails are fixed on the rear end plate, and the other ends of the sliding rails sequentially penetrate through the second movable plate and the first movable plate and are fixed on the front end plate.
5. The device for on-line measurement of expansion force distribution of lithium ion battery according to claim 4, wherein: the slide rail is of a smooth cylindrical structure.
6. The device for on-line measurement of expansion force distribution of lithium ion battery according to claim 1, wherein: the front end plate is the same as the rear end plate in size, the height of the front end plate is larger than that of the battery to be tested, and the length of the front end plate is larger than that of the battery to be tested.
7. The device for on-line measurement of expansion force distribution of lithium ion battery according to claim 6, wherein: the lengths of the first movable plate, the second movable plate and the pressure measurement film are all larger than the length of the battery to be measured and smaller than the length of the front end plate; the heights of the first movable plate, the second movable plate and the pressure measurement film are all larger than the height of the battery to be measured and smaller than the height of the front end plate.
8. The device for on-line measurement of expansion force distribution of lithium ion battery according to claim 1, wherein: the rear end plate, the front end plate, the first movable plate and the second movable plate are all made of transparent insulating materials.
9. The device for on-line measurement of expansion force distribution of lithium ion battery according to claim 8, wherein: the rear end plate, the front end plate, the first movable plate and the second movable plate are all made of glass fiber reinforced plastic.
10. The device for on-line measurement of expansion force distribution of lithium ion battery according to claim 1, wherein: the rear end plate, the front end plate, the first movable plate and the second movable plate are all parallel to each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921618082.0U CN210400665U (en) | 2019-09-26 | 2019-09-26 | Device for on-line measuring expansion force distribution of lithium ion battery |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921618082.0U CN210400665U (en) | 2019-09-26 | 2019-09-26 | Device for on-line measuring expansion force distribution of lithium ion battery |
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| CN210400665U true CN210400665U (en) | 2020-04-24 |
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| CN201921618082.0U Active CN210400665U (en) | 2019-09-26 | 2019-09-26 | Device for on-line measuring expansion force distribution of lithium ion battery |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113255764A (en) * | 2021-05-21 | 2021-08-13 | 池测(上海)数据科技有限公司 | Method, system and device for detecting electrochemical energy storage system fault by using machine learning |
| CN116538890A (en) * | 2023-07-07 | 2023-08-04 | 钛玛科（北京）工业科技有限公司 | Adhesive tape detecting system for battery |
| CN117249933A (en) * | 2023-11-17 | 2023-12-19 | 锐马（福建）电气制造有限公司 | Lithium battery expansion force detection method |
-
2019
- 2019-09-26 CN CN201921618082.0U patent/CN210400665U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113255764A (en) * | 2021-05-21 | 2021-08-13 | 池测(上海)数据科技有限公司 | Method, system and device for detecting electrochemical energy storage system fault by using machine learning |
| CN116538890A (en) * | 2023-07-07 | 2023-08-04 | 钛玛科（北京）工业科技有限公司 | Adhesive tape detecting system for battery |
| CN116538890B (en) * | 2023-07-07 | 2023-11-03 | 钛玛科（北京）工业科技有限公司 | Adhesive tape detecting system for battery |
| CN117249933A (en) * | 2023-11-17 | 2023-12-19 | 锐马（福建）电气制造有限公司 | Lithium battery expansion force detection method |
| CN117249933B (en) * | 2023-11-17 | 2024-03-15 | 锐马（福建）电气制造有限公司 | Lithium battery expansion force detection method |
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