CN113358253A - Columnar battery expansion force and displacement measuring device - Google Patents
Columnar battery expansion force and displacement measuring device Download PDFInfo
- Publication number
- CN113358253A CN113358253A CN202110484398.0A CN202110484398A CN113358253A CN 113358253 A CN113358253 A CN 113358253A CN 202110484398 A CN202110484398 A CN 202110484398A CN 113358253 A CN113358253 A CN 113358253A
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- Prior art keywords
- battery
- displacement
- clamping
- expansion force
- slider
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B11/00—Work holders not covered by any preceding group in the subclass, e.g. magnetic work holders, vacuum work holders
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a device for measuring the expansion force and displacement of a columnar battery, which comprises a clamping device matched with the columnar battery to be measured and used for clamping the columnar battery, wherein the clamping device is connected with a driving control device, the clamping device is driven by the driving control device to clamp and position the columnar battery, a measuring device is arranged on the clamping device, the measuring device comprises a pressure sensor and a laser displacement sensor which are respectively used for measuring the force and the displacement in the expansion process of the battery, and the pressure sensor and the laser displacement sensor are both in signal connection with a signal analysis unit. The device for measuring the expansion force and the displacement of the columnar battery realizes the measurement of the expansion force and the displacement of the columnar battery in the working process, can realize the measurement of the expansion displacement and the force of the battery under the controllable expansion force and displacement, and can also realize the synchronous detection of the expansion force and the displacement of the columnar battery.
Description
Technical Field
The invention relates to a device for measuring the expansion force and displacement of a columnar battery, belonging to the technical field of force and displacement measurement.
Background
The battery is used as a mobile power supply and has extremely wide application in our production and life. The expansion force and displacement are generated in the using process of the battery, and the expansion force and displacement have great influence on the capacity and the service life of the battery, so the expansion force and the displacement of the battery are always concerned. Under the condition, a device for measuring the expansion force and the displacement of the battery is developed, and the data provided by the device greatly promotes the recognition research of the battery by scientific researchers.
However, the conventional battery swelling force and displacement measuring device has the following problems: 1. the existing measuring device mainly measures the square battery, and lacks a measuring device for the expansion force and displacement of the columnar battery; 2. most measuring devices cannot respectively measure the force and the displacement in the measuring process, so that the force and the displacement are mutually influenced, and the characteristics of the force and the displacement are not favorably analyzed; 3. most devices do not allow for the simultaneous measurement of expansion force and displacement.
Disclosure of Invention
In view of the above problems in the prior art, an object of the present invention is to provide a device for measuring expansion force and displacement of a cylindrical battery.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a column battery expansibility and displacement measurement device, includes with the column battery looks adaptation that awaits measuring, is used for pressing from both sides the clamping device of tight column battery, clamping device is connected with drive control device, clamping device presss from both sides tight location with the column battery under drive control device's drive, the last measuring device that is equipped with of clamping device, measuring device is including being used for measuring pressure sensor and the laser displacement sensor of battery inflation in-process power and displacement respectively, the equal signal connection of pressure sensor and laser displacement sensor has signal analysis unit.
The utility model provides an implementation scheme, clamping device is chuck type clamping device, includes slider sleeve, jack catch, toothed disc and gear, the slider sleeve include vertical setting with the column battery looks adaptation that awaits measuring, be used for the battery fixed part of fixed column battery, the outer wall of battery fixed part is equipped with slider portion, laser displacement sensor locates the outside of battery fixed part, is located slider portion, the upper portion level of jack catch is equipped with the slide rail, slider portion and slide rail sliding connection, pressure sensor locates on the upper portion lateral wall of jack catch, the lower part of jack catch is equipped with joint portion, toothed disc is located the below of jack catch, and is equipped with the spiral line form recess with joint portion looks adaptation on the toothed disc, joint portion card is in spiral line form recess, the gear links to each other with the toothed disc, drive control device links to each other with the gear.
According to a preferable scheme, the driving control device comprises a servo motor and a control unit used for controlling the servo motor, the servo motor is connected with the gear, and the control unit is in signal connection with the signal analysis unit, the pressure sensor and the laser displacement sensor respectively.
In a preferable scheme, lubricating grease is coated on a sliding rail connected with a sliding block sleeve and a clamping jaw in the clamping device.
The utility model provides a preferred scheme, includes a plurality of slider sleeves, and every slider sleeve all corresponds sliding connection and has the jack catch, and a plurality of slider sleeves along the circumferencial direction symmetric distribution, surround the cylindrical sleeve that forms with column battery looks adaptation together.
In a preferred scheme, the bottom of a cylindrical sleeve formed by surrounding a plurality of sliding block sleeves is provided with a hollow circle.
According to the optimal scheme, when the size matched with the to-be-measured cylindrical battery is formed after the plurality of sliding block sleeves are surrounded, a gap is formed between every two adjacent sliding block sleeves.
In a preferred embodiment, the control unit may record the operating state of the servo motor in real time.
Compared with the prior art, the invention has the beneficial technical effects that:
the measuring device provided by the invention realizes measurement of the expansion force and the displacement of the columnar battery in the working process, can realize measurement of the expansion displacement and the force of the battery under the controllable expansion force and displacement, can realize synchronous detection of the expansion force and the displacement of the columnar battery, and obtains remarkable progress and unexpected effect compared with the prior art.
Drawings
FIG. 1 is a front view of a cylindrical battery expansion force and displacement measuring device provided in an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a cylindrical battery expansion force and displacement measurement device provided in an embodiment of the present invention;
FIG. 3 is a schematic structural view of a slider sleeve in an embodiment of the present invention;
FIG. 4 is a schematic view of the connection of the slider sleeve and the pawl in an embodiment of the present invention;
the numbers in the figures are as follows: 1. a columnar battery; 2. a pressure sensor; 3. a laser displacement sensor; 4. a slider sleeve; 41. a battery fixing portion; 411. a notch; 42. a slider portion; 421. mounting grooves; 5. a claw; 51. a slide rail; 52. a clamping part; 6. a gear plate; 61. a helical wire-like groove; 7. a gear; 8. a servo motor; 9. a housing.
Detailed Description
The technical solution of the present invention will be further clearly and completely described below with reference to the accompanying drawings and examples.
Examples
Please refer to fig. 1 to fig. 4: the invention provides a device for measuring the expansion force and displacement of a cylindrical battery, which comprises a clamping device which is matched with the cylindrical battery 1 to be measured and used for clamping the cylindrical battery 1, wherein the clamping device is connected with a driving control device, the clamping device is driven by the driving control device to clamp and position the cylindrical battery 1, the clamping device is provided with a measuring device, the measuring device comprises a pressure sensor 2 and a laser displacement sensor 3 which are respectively used for measuring the force and the displacement in the expansion process of the battery, and the pressure sensor 2 and the laser displacement sensor 3 are both in signal connection with a signal analysis unit (not shown in the figure). In the measurement process, the cylindrical battery 1 to be measured is clamped and positioned through the clamping device, the clamping and displacement degree of the clamping device is controlled through the control driving device, the force and the displacement in the expansion process of the battery are measured through the pressure sensor 2 and the laser displacement sensor 3, the measured result is converted into an electronic signal to be input into the signal analysis unit, and the signal analysis unit analyzes the measured result, so that the force and the displacement in the expansion process of the battery are measured.
In this embodiment, the clamping device is a chuck type clamping device, and includes a slider sleeve 4, a chuck 5, a gear disk 6 and a gear 7, where the slider sleeve 4 includes a vertically arranged battery fixing portion 41 adapted to the cylindrical battery 1 to be tested and used for fixing the cylindrical battery 1 (that is, the specification of the slider sleeve 4 can be adjusted according to the model size of the cylindrical battery 1 to be tested), the outer wall of the battery fixing portion 41 is provided with a slider portion 42, the laser displacement sensor 3 is arranged outside the battery fixing portion 41 and in the slider portion 42 (specifically, as shown in fig. 3, the slider portion 42 is provided with an installation groove 421 for installing the laser displacement sensor 3, the laser displacement sensor 3 is installed in the installation groove 421, the upper portion of the chuck 5 is horizontally provided with a slide rail 51, the slider portion 42 is slidably connected to the slide rail 51, the pressure sensor 2 is arranged on the upper side wall of the chuck 5, the lower part of jack catch 5 is equipped with joint portion 52, gear disc 6 is located the below of jack catch 5, and is equipped with the spiral line form recess 61 with joint portion 52 looks adaptation on the gear disc 6, joint portion 52 card is in spiral line form recess 61, gear 7 links to each other with gear disc 6, drive control device links to each other with gear 7.
In this embodiment, the driving control device includes a servo motor 8 and a control unit (not shown) for controlling the servo motor 8, the servo motor 8 is connected with the gear 7, and the control unit is in signal connection with the signal analysis unit. During measurement, the gear 7 is driven by the servo motor 8 to rotate, the gear 7 drives the gear disc 6 to rotate, the clamping portion 52 of the clamping jaw 5 is clamped in the spiral linear groove 61 of the gear disc 6, the clamping jaw 5 also starts to move until being clamped along with the rotation of the gear disc 6, and finally the cylindrical battery 1 to be measured is fixed in the sliding block sleeve 4 to be clamped. The control unit is in signal connection with the signal analysis unit, the pressure sensor 2 and the laser displacement sensor 3 respectively, the signal analysis unit receives the measurement signals of the pressure sensor 2 and the laser displacement sensor 3 in real time and feeds the analysis results back to the control unit, the control unit controls the operation of the servo motor 8, meanwhile, the control unit can also be in signal connection with the pressure sensor 2 and the laser displacement sensor 3 directly, in addition, the control unit can also record the operation state of the servo motor 8 in real time, and the motion state of the servo motor 8 is linked with the movement of the clamping jaw 5, and the laser displacement sensor 3 is allowed to correct the results. The key point of the application lies in the composition and interconnection relationship of hardware parts of the device, and the signal analysis unit and the control unit are all in the prior art.
In this embodiment, lubricating grease is applied to the sliding rail connected to the slider sleeve 4 and the jaw 5 in the clamping device, so that the influence of friction on the measurement result can be reduced.
In this embodiment, the battery pack comprises a plurality of sliding block sleeves 4, each sliding block sleeve 4 is correspondingly connected with a clamping jaw 5 in a sliding manner, and the plurality of sliding block sleeves 4 are symmetrically distributed along the circumferential direction and form a cylindrical sleeve matched with the cylindrical battery 1 after being surrounded together (as shown in fig. 1 and 2). In this embodiment, three slider sleeves 4 are provided, and correspondingly, the three claws 5, the three pressure sensors 2 and the three laser displacement sensors 3 are also provided. The arrangement of the pressure sensors 2 and the laser displacement sensor 3 can balance the influence of the sensors on the measurement result, and the average value of the sensors can also reduce the measurement error.
In this embodiment, the cylindrical telescopic bottom that forms after a plurality of slider sleeves 4 surround has hollow circle, and is corresponding, and the bottom central point of the battery fixed part 41 of every slider sleeve 4 puts and is equipped with breach 411, and after a plurality of slider sleeves 4 surround, breach 411 can form hollow circle, can reserve and place the pole piece and carry out charge-discharge treatment in order to carry out the columnar cell 1 that awaits measuring.
In addition, when a plurality of slider sleeves 4 surround and form the size matched with the columnar battery 1 to be tested, a gap is formed between two adjacent slider sleeves 4 to ensure the contact between the slider sleeves 4 and the columnar battery 1.
In this example, the slider sleeve 4, the jaws 5, the gear plate 6 and the gear 7 of the clamping device are all made of materials with high hardness to reduce the influence of the deformation of the clamping device on the measurement result during the measurement process.
Furthermore, the measuring device comprises a housing 9 on which the slide sleeve 4, the jaws 5, the toothed disc 6 and the toothed wheel 7 are arranged.
The device for measuring the expansion force and the displacement of the columnar battery can not only respectively measure the expansion displacement and the expansion force of the columnar battery 1, but also simultaneously measure the expansion displacement and the expansion force of the columnar battery 1, and the specific measurement is as follows:
1) measuring the expansion displacement of the columnar battery 1 to be measured under the controllable expansion force:
the expansion force is preset in the control unit, the control unit controls the operation of the servo motor 8, the servo motor 8 drives the gear 7 to rotate, the gear 7 drives the gear disc 6 to rotate, the clamping part 52 of the clamping jaw 5 is clamped into the spiral linear groove 61 on the gear disc 6, the clamping jaw 5 also starts to move until being clamped along with the rotation of the gear disc 6, the cylindrical battery 1 to be measured is fixed in the sliding sleeve 4 to be clamped, and the pressure measured by the pressure sensor 2 is equal to the expansion force preset in the control unit;
when the columnar battery 1 expands during work, the columnar battery 1 can push the sliding sleeve 4 to move towards the jaw 5 along the sliding rail, the pressure of the sliding sleeve on the jaw 5 is increased, in the process again, the pressure sensor 2 transmits a pressure signal to the control unit in real time, and when the pressure signal obtained by the control unit is not consistent with the preset expansion force, the servo motor 8 is controlled to move so that the pressure of the pressure sensor 2 reaches the preset expansion force, and the expansion force borne by the columnar battery 1 is controlled; in the process, the motion state of the servo motor 8 is recorded, and the expansion displacement of the columnar battery 1 can be obtained through the corresponding mathematical relationship between the motion of the servo motor 8 and the expansion displacement; it should be noted that the preset expansion force may be a variable, in which case the displacement change measured by the laser displacement sensor 3 will correct the final displacement result;
2) the swelling force of the cylindrical battery 1 to be measured is measured under fixed swelling displacement conditions:
the columnar battery 1 to be detected is clamped through a clamping device consisting of a sliding block sleeve 4, a clamping jaw 5, a gear disc 6 and a gear 7, when the columnar battery 1 starts to work and expand, a laser displacement sensor 3 detects displacement change, a control unit controls a servo motor 8 to compensate the expansion displacement of the columnar battery 1 to be detected, so that the expansion displacement of the columnar battery 1 to be detected is fixed, and under the condition, a pressure value recorded by a pressure sensor 2 is the expansion force of the columnar battery 1 to be detected under the condition;
3) and simultaneously measuring the expansion force and displacement of the columnar battery 1 to be measured:
the cylindrical battery 1 to be tested is clamped through a clamping device consisting of the sliding block sleeve 4, the clamping jaw 5, the gear disc 6 and the gear 7, the servo motor 8 is locked through the control unit, the cylindrical battery 1 to be tested starts to work, the pressure recorded by the pressure sensor 2 is the expansive force of the cylindrical battery 1 to be tested, and the displacement recorded by the laser displacement sensor 3 is the expansive displacement of the cylindrical battery 1 to be tested.
It is finally necessary to point out here: the above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention.
Claims (7)
1. The utility model provides a column battery expansibility and displacement measurement device which characterized in that: include with the column battery looks adaptation that awaits measuring, be used for pressing from both sides the clamping device of pressing from both sides tight column battery, clamping device is connected with drive control device, clamping device presss from both sides tight location with the column battery under drive control device's drive, the last measuring device that is equipped with of clamping device, measuring device is including being used for measuring pressure sensor and the laser displacement sensor of battery inflation in-process power and displacement respectively, the equal signal connection of pressure sensor and laser displacement sensor has signal analysis unit.
2. The cylindrical battery expansion force and displacement measuring device of claim 1, wherein: the clamping device is a chuck type clamping device and comprises a slider sleeve, a clamping jaw, a gear disc and a gear, wherein the slider sleeve comprises a vertically arranged battery fixing part which is matched with a to-be-detected cylindrical battery and used for fixing the cylindrical battery, a slider part is arranged on the outer wall of the battery fixing part, a laser displacement sensor is arranged on the outer side of the battery fixing part and located in the slider part, a slide rail is horizontally arranged at the upper part of the clamping jaw, the slider part is connected with the slide rail in a sliding mode, a pressure sensor is arranged on the side wall of the upper part of the clamping jaw, a clamping part is arranged at the lower part of the clamping jaw, the gear disc is located below the clamping jaw, a spiral linear groove matched with the clamping part is formed in the gear disc, the clamping part is clamped in the spiral linear groove, the gear is connected with the gear disc, and the drive control device is connected with the gear.
3. The cylindrical battery expansion force and displacement measuring device of claim 2, wherein: the drive control device comprises a servo motor and a control unit for controlling the servo motor, the servo motor is connected with the gear, and the control unit is in signal connection with the signal analysis unit, the pressure sensor and the laser displacement sensor respectively.
4. The cylindrical battery expansion force and displacement measuring device of claim 2, wherein: lubricating grease is coated on a sliding rail connected with a sliding block sleeve and a clamping jaw in the clamping device.
5. The cylindrical battery expansion force and displacement measuring device of claim 2, wherein: including a plurality of slider sleeves, every slider sleeve all corresponds sliding connection and has the jack catch, a plurality of slider sleeves along the circumferencial direction symmetric distribution, surround the cylindrical sleeve that forms with column battery looks adaptation together after together.
6. The cylindrical battery expansion force and displacement measuring device of claim 5, wherein: the bottom of the cylindrical sleeve formed after the plurality of sliding block sleeves are surrounded is provided with a hollow circle.
7. The cylindrical battery expansion force and displacement measuring device of claim 5, wherein: when the size of the cylindrical battery to be tested is formed after the plurality of sliding block sleeves are surrounded, a gap is formed between every two adjacent sliding block sleeves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110484398.0A CN113358253A (en) | 2021-04-30 | 2021-04-30 | Columnar battery expansion force and displacement measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110484398.0A CN113358253A (en) | 2021-04-30 | 2021-04-30 | Columnar battery expansion force and displacement measuring device |
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| Publication Number | Publication Date |
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| CN113358253A true CN113358253A (en) | 2021-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110484398.0A Pending CN113358253A (en) | 2021-04-30 | 2021-04-30 | Columnar battery expansion force and displacement measuring device |
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| CN (1) | CN113358253A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114440974A (en) * | 2022-01-18 | 2022-05-06 | 上海工程技术大学 | Battery expansion displacement and temperature in-situ measuring device |
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Application publication date: 20210907 |