CN210741374U - Device for testing thickness of tab on line - Google Patents
Device for testing thickness of tab on line Download PDFInfo
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- CN210741374U CN210741374U CN201921816700.2U CN201921816700U CN210741374U CN 210741374 U CN210741374 U CN 210741374U CN 201921816700 U CN201921816700 U CN 201921816700U CN 210741374 U CN210741374 U CN 210741374U
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Abstract
The utility model provides a device for testing the thickness of a pole lug on line, which comprises a testing block; the driving device is connected with the test block and used for controlling the movement of the test block; the loading substrate is arranged in parallel with the testing block, and the tested tab is arranged between the loading substrate and the testing block; the sensor is connected with the test block and keeps synchronous motion with the test block; the sensor is provided with an induction head, and the induction head is arranged between the carrier substrate and the test block and used for inducing a tested tab. Compared with the prior art, the utility model discloses utilize the change of sensor on-line measuring utmost point ear thickness to judge whether the nickel piece connects and is left over in the pole piece, according to the different signals of the different output that detect utmost point ear thickness, supply the operator to judge whether reject unusual pole piece, can play 100% prevent slow-witted, effectively prevented that the nickel piece that appears leaving over in the electric core from connecting, avoid connecting to prick the diaphragm and lead to the battery short circuit to fire the burning even.
Description
Technical Field
The utility model relates to a lithium ion battery manufacturing process field, concretely relates to device of on-line test utmost point ear thickness.
Background
In order to solve the welding required by PACK of the soft package lithium battery, a nickel sheet is welded on a positive electrode aluminum strip usually when a naked battery cell leaves a factory, and most commonly, a rolled aluminum is directly used for converting a nickel tab, and a sheet making machine is directly used for welding and rubberizing, so that the complicated steps in the manufacturing process are reduced. However, there is an unavoidable disadvantage: the nickel sheet joint needs to cut off redundant waste materials, but the situation of cutting and wrong cutting positions often occurs in the actual industrial production, so that the tab joint is possibly welded on the tab; the common sheet making machine cannot perform fool-proofing in 100 percent, manual screening after winding often causes selection omission, and subsequent charging and discharging cannot be found basically after the selection omission flows into a full-automatic winding machine in the next procedure and is wound into a naked battery cell; meanwhile, the nickel sheet joint left in the battery core is hidden with huge risk, and the membrane can be punctured by burrs of the internal joint at any time to cause internal short circuit and further cause fire burning.
In view of the above, it is necessary to provide a technical solution to the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: the utility model provides a device of on-line test utmost point ear thickness, the pole piece that meets the requirements is selected out through the on-line measuring of utmost point ear thickness, has solved the flaker and can't prevent staying 100%, makes the aluminium of leaving over in electric core change nickel joint and punctures the diaphragm, leads to the problem of battery short circuit, the burning of firing.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
an apparatus for testing tab thickness on-line, comprising:
a test block;
the driving device is connected with the test block and used for controlling the movement of the test block;
the loading substrate is arranged in parallel with the testing block, and the tested tab is arranged between the loading substrate and the testing block;
the sensor is connected with the test block and keeps synchronous motion with the test block;
the sensor is provided with an induction head, and the induction head is arranged between the carrier substrate and the test block and used for inducing a tested tab.
The utility model adds a device for testing the thickness of the pole ear on line on the traditional sheet making machine, when the tested pole ear passes through the device, the driving device drives the testing block and the sensor to descend together, and the sensing head in the sensor is used for detecting the thickness of the pole ear, if the cutting error occurs, namely the nickel sheet joint is left in the pole piece, the thickness of the pole ear is increased; if the cutting is normal, the nickel sheet joint has no residue, the thickness of the pole lug is normal, the induction head can detect the difference of the thickness of the pole lug and the thickness of the nickel sheet joint, and then different signals are sent to the sensor, so that whether the tested pole lug is abnormal or not is judged. The utility model discloses can 100% play prevent slow-witted effect, prevent that the nickel piece that leaves over from connecting in the electric core, connect to puncture the condition that the diaphragm leads to battery short circuit, the burning of starting a fire.
Preferably, the device for testing the thickness of the tab on line further comprises a signal amplifier, and the signal amplifier is electrically connected with the sensor. Because the thicknesses of the nickel sheet joint and the lug are both small, signals detected by the induction head are amplified and displayed on the signal amplifier, and whether the tested lug is abnormal or not can be displayed more visually. The signal amplifier of the utility model is preferably of GT-71A type.
More preferably, the device for testing the thickness of the tab on line further comprises an alarm, and the alarm is electrically connected with the signal amplifier. And setting an intermediate value on the signal amplifier, wherein the intermediate value is between the normal lug thickness and the abnormal lug thickness. When the sensor detects that the nickel-free joint is a normal tab, the display value of the signal amplifier is lower than the set intermediate value, and the alarm is not triggered to send an alarm signal; when the sensor detects that the thickness is increased, namely the nickel sheet joint is an abnormal pole piece, the display value of the signal amplifier is higher than the set intermediate value, the alarm is triggered, and an alarm signal is output.
More preferably, the device for testing the thickness of the tab on line further comprises a labeling device, and the labeling device is electrically connected with the alarm. When the alarm is triggered, the alarm outputs an alarm signal to the labeling device, the labeling device works, and a bad label is attached to the pole piece with the abnormality. Wherein, a part of the bad label is exposed outside the pole piece for the next process to screen and reject the abnormal pole piece.
Preferably, the device for testing the thickness of the tab on line further comprises a labeling device electrically connected with the sensor. The labeling device can also be directly connected with the sensor, when the sensor finds an abnormal pole piece, a signal is transmitted to the labeling device, and the labeling device directly sticks a bad label to the abnormal pole piece. Similarly, a part of the bad label is exposed outside the pole piece for the next process to screen and reject the abnormal pole piece.
Preferably, the sensor is a displacement sensor. The displacement sensor is also called as a linear sensor, can display the size of a measured object in an electric quantity mode, has high accuracy, and is greatly convenient for detecting the thickness of the polar ear.
More preferably, the displacement sensor is at least one of a potentiometer displacement sensor, an inductive displacement sensor, a digital displacement sensor and a hall displacement sensor. Wherein, the utility model discloses a displacement sensor preferentially adopts the model to be CT-H10's kirschner displacement sensor, and this is located the sensor and can obtains purchasing on the market, and here is no longer repeated.
Preferably, the accuracy of the sensor is less than or equal to 0.1 mm. Because the thickness of nickel piece joint welding is generally 0.1mm, when the joint remains in the pole piece, the thickness of pole piece increases 0.1mm, if the response accuracy of sensor is greater than 0.1mm, then can't 100% accurately discern unusual pole piece, consequently, need guarantee the accuracy of sensor at least 0.1 mm. Additionally, the utility model discloses the model that preferentially adopts can reach 0.01mm for CT-H10's basal schlieren displacement sensor accuracy at least, can be more accurate the change of accuse utmost point ear thickness, has guaranteed 100% of pelleter completely to prevent staying. Of course, the thickness of the nickel sheet joint can be set according to the thickness of a specific joint, but the thickness of the nickel sheet joint can be detected within the range of accuracy.
Preferably, the driving device is connected with the test block through a contraction spring.
Preferably, the device for testing the thickness of the tab on line further comprises a sliding block and a sliding rail, wherein the sliding block moves along the sliding rail, and the sliding block is connected with the testing block. The movement of the test block is adjusted through the sliding block and the sliding rail, so that the falling speed of the test block can be stably controlled, the falling speed of the test block is prevented from being too high, and the sensor does not have time to react to influence the test result.
The beneficial effects of the utility model reside in that:
1) the utility model provides a device for testing the thickness of a pole lug on line, which comprises a testing block; the driving device is connected with the test block and used for controlling the movement of the test block; the loading substrate is arranged in parallel with the testing block, and the tested tab is arranged between the loading substrate and the testing block; the sensor is connected with the test block and keeps synchronous motion with the test block; the sensor is provided with an induction head, and the induction head is arranged between the carrier substrate and the test block and used for inducing a tested tab. Compared with the prior art, the utility model discloses utilize the change of sensor on-line measuring utmost point ear thickness to judge whether the nickel piece connects and is left over in the pole piece, according to the different signals of the different output that detect utmost point ear thickness, supply the operator to judge whether reject unusual pole piece, can play 100% prevent slow-witted, effectively prevented that the nickel piece that appears leaving over in the electric core from connecting, connect to puncture the diaphragm and lead to the battery short circuit, the condition of burning on fire.
2) The utility model discloses still be provided with signal amplifier, can detect the thickness of pole piece more directly perceivedly, judge the pole piece more effectively whether unusual appears.
3) The utility model discloses simple structure only need add this device at traditional pelleter can, need not the pelleter of special design again, be favorable to the production of industrialization.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a side view of the present invention.
Fig. 3 is a schematic diagram of signal output according to the present invention.
In the figure: 1-a test block; 2-a drive device; 3-a support substrate; 4-a sensor; 41-induction head; 5-testing the tab; 6-a retraction spring; 7-a slide block; 8-sliding rail.
Detailed Description
In order to make the technical solutions and advantages of the present invention clearer, the present invention and its advantageous effects will be described in further detail below with reference to the accompanying drawings of the detailed description and the specification, but the present invention is not limited thereto.
As shown in fig. 1 to 3, a device for testing the thickness of a tab on line comprises a testing block 1; the driving device 2 is connected with the testing block 2 through a contraction spring 6 and used for controlling the movement of the testing block 1; the driving device 2 comprises a pressure cylinder, and the pressure cylinder is used for controlling the test block 1 to move; the carrier substrate 3 is arranged in parallel with the testing block 1, and the tested tab 5 is arranged between the carrier substrate 3 and the testing block 1; the sensor 4 is connected with the test block 1 and keeps synchronous motion with the test block 1; the sensor 4 is provided with an induction head 41, and the induction head 41 is arranged between the carrier substrate 3 and the test block 1 and is used for inducing the tested tab 5; preferably, the sensor 4 is a displacement sensor, and the displacement sensor is at least one of a potentiometer displacement sensor, an inductive displacement sensor, a digital displacement sensor and a hall displacement sensor. In the embodiment, a kirschner displacement sensor with the model number of CT-H10 is adopted, the sensor 4 mainly judges whether the joint is left on the pole piece by utilizing the height change between the induction head 41 and the carrier substrate 3, and when the height is increased, the joint can be judged to be left on the pole piece; otherwise, when the height is not changed, the pole piece is normal. In addition, this test utmost point ear thickness device still includes slider 7 and slide rail 8, and slide rail 8 is fixed to be set up, and slider 7 removes along slide rail 8, and slider 7 is connected with test block 1 and is driven the removal of test block 1.
The accuracy of the sensor 4 is less than or equal to 0.1mm, the sensor can be set according to different thicknesses of specific joints, but the thickness of the nickel sheet joint can be detected within the accuracy range, the induction accuracy of the kirschner sensor can reach at least 0.01mm, and the measurement accuracy required by the thickness of a common joint being 0.1mm is completely met. The sensor 4 is also electrically connected with a labeling device, when the sensor 4 finds an abnormal pole piece, a signal is transmitted to the labeling device, and the labeling device directly labels the abnormal pole piece. Similarly, a part of the bad label is exposed outside the pole piece for the next process to screen and reject the abnormal pole piece.
Preferably, the device for testing the thickness of the tab in an online manner further comprises a signal amplifier, and the signal amplifier is electrically connected with the sensor 4. Because the thicknesses of the nickel sheet joint and the lug are both small, the signal detected by the induction head 41 is amplified and displayed on the signal amplifier, and whether the tested lug 5 is abnormal or not can be displayed more intuitively. The signal amplifier of the utility model is preferably of GT-71A type.
More preferably, the device for testing the thickness of the tab on line further comprises an alarm and a labeling device, wherein the alarm is electrically connected with the signal amplifier, and the labeling device is electrically connected with the alarm. And setting an intermediate value on the signal amplifier, wherein the intermediate value is between the normal lug thickness and the abnormal lug thickness. When the sensor 4 detects that the nickel-free joint is a normal tab, the display value of the signal amplifier is lower than the set intermediate value, and the alarm is not triggered to send an alarm signal; when the sensor 4 detects that the thickness is increased, namely the nickel sheet joint is an abnormal pole piece, the display value of the signal amplifier is higher than the set intermediate value, the alarm is triggered, an alarm signal is output to the labeling device, the labeling device works, and a bad label is attached to the abnormal pole piece. Wherein, a part of the bad label is exposed outside the pole piece for the next process to screen and reject the abnormal pole piece.
The utility model discloses a concrete implementation method, including following step:
and S1, unwinding the pole piece, welding a pole lug, and covering green glue on the pole lug.
S2, the pole piece welded with the pole ear is placed on the carrying substrate 3, the driving device 2 starts to work, the testing block 1 is driven to descend, the testing block 1 and the sensor 4 are kept to move synchronously, the pole piece can be flattened by the testing block 1, and at the moment, the induction head 41 is close to the tested pole ear 5.
And S3, selecting whether the induction head 41 touches the pole ear or not according to different sensors 4, wherein if a Ginbs displacement sensor with the model of CT-H10 is adopted, the induction head 41 does not touch the pole ear. Wherein, the utmost point ear thickness of test adds the thickness of green gum for utmost point ear, utmost point ear thickness all show utmost point ear and add the thickness of green gum, the utmost point ear thickness of normal pole piece also is utmost point ear and adds the thickness of green gum.
And S4, judging whether the thickness of the pole piece is increased or not according to the height between the induction head 41 and the carrier substrate 3, namely judging whether a nickel piece joint is left in the pole piece or not. The signal of the induction head 41 can be transmitted to a signal amplifier, an intermediate value between the thicknesses of the normal pole lug and the abnormal pole lug is preset on the signal amplifier, if the numerical value in the signal amplifier is higher than the preset intermediate value, the pole lug is an abnormal pole lug, the signal amplifier outputs a signal to an alarm, the alarm outputs an alarm signal to a labeling device, the labeling device works to label a bad label to the abnormal pole lug, wherein one part of the bad label is exposed out of the pole lug and is identified by an automatic winding machine in the next process, and the abnormal pole lug is removed. Otherwise, the alarm signal is not started, the pole piece is a normal pole piece, and the detection of the thickness of the pole piece is completed. In addition, whether the abnormal pole piece is detected can be directly judged according to the numerical value displayed by the sensor 4, then the signal is directly transmitted to the labeling device, the abnormal pole piece is labeled with a bad label, and similarly, one part of the bad label is exposed outside the pole piece and is identified by an automatic winding machine in the next process to remove the abnormal pole piece.
Compared with the prior art, the utility model discloses increased utmost point ear thickness detection device on traditional pelleter, compensatied the online vacancy of examining entirely the utmost point ear thickness of pelleter, reduced the risk of the inside short circuit of electric core, the burning of starting a fire.
Variations and modifications to the above-described embodiments may become apparent to those skilled in the art from the disclosure and teachings of the above description. Therefore, the present invention is not limited to the above-mentioned embodiments, and any obvious modifications, replacements or variations made by those skilled in the art on the basis of the present invention belong to the protection scope of the present invention.
Furthermore, in the description of the present invention, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model discloses the standard part that uses all can purchase from the market, and dysmorphism piece all can be customized according to the description with the record of drawing of description, and the concrete connection mode of each part all adopts conventional means such as ripe bolt, rivet, welding among the prior art, and machinery, part and equipment all adopt prior art, and conventional model, including circuit connection adopts conventional connection mode among the prior art, does not detailed here again.
Claims (10)
1. The utility model provides a device of online test utmost point ear thickness which characterized in that includes:
a test block;
the driving device is connected with the test block and used for controlling the movement of the test block;
the loading substrate is arranged in parallel with the testing block, and the tested tab is arranged between the loading substrate and the testing block;
the sensor is connected with the test block and keeps synchronous motion with the test block;
the sensor is provided with an induction head, and the induction head is arranged between the carrier substrate and the test block and used for inducing a tested tab.
2. The apparatus for testing tab thickness in-line of claim 1 further comprising a signal amplifier electrically connected to the sensor.
3. The device for testing the thickness of the tab in the line as claimed in claim 2, further comprising an alarm, wherein the alarm is electrically connected with the signal amplifier.
4. The device for testing the thickness of the tab in the online manner as claimed in claim 3, further comprising a labeling device, wherein the labeling device is electrically connected with the alarm.
5. The apparatus for testing tab thickness in-line of claim 1 further comprising a labeling device electrically connected to the sensor.
6. The apparatus for testing tab thickness in-line of claim 1 wherein the sensor is a displacement sensor.
7. The device for testing the thickness of the tab in the online manner as claimed in claim 6, wherein the displacement sensor is at least one of a potentiometer type displacement sensor, an inductive type displacement sensor, a digital type displacement sensor and a Hall type displacement sensor.
8. The device for testing the thickness of the tab in the line as claimed in claim 1, wherein the accuracy of the sensor is less than or equal to 0.1 mm.
9. The apparatus for testing tab thickness in-line of claim 1 wherein the driving means is connected to the test block by a retraction spring.
10. The device for testing the thickness of the tab in the line as claimed in claim 1, further comprising a sliding block and a sliding rail, wherein the sliding block moves along the sliding rail, and the sliding block is connected with the testing block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921816700.2U CN210741374U (en) | 2019-10-28 | 2019-10-28 | Device for testing thickness of tab on line |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921816700.2U CN210741374U (en) | 2019-10-28 | 2019-10-28 | Device for testing thickness of tab on line |
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| Publication Number | Publication Date |
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| CN210741374U true CN210741374U (en) | 2020-06-12 |
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| CN201921816700.2U Active CN210741374U (en) | 2019-10-28 | 2019-10-28 | Device for testing thickness of tab on line |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117781914A (en) * | 2024-02-28 | 2024-03-29 | 宁德时代新能源科技股份有限公司 | Tab dislocation detection system and method |
-
2019
- 2019-10-28 CN CN201921816700.2U patent/CN210741374U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117781914A (en) * | 2024-02-28 | 2024-03-29 | 宁德时代新能源科技股份有限公司 | Tab dislocation detection system and method |
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