CN209784508U - Insulation resistance tester prevent slow-witted test sample spare - Google Patents
Insulation resistance tester prevent slow-witted test sample spare Download PDFInfo
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- CN209784508U CN209784508U CN201920027513.XU CN201920027513U CN209784508U CN 209784508 U CN209784508 U CN 209784508U CN 201920027513 U CN201920027513 U CN 201920027513U CN 209784508 U CN209784508 U CN 209784508U
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- insulation resistance
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- resistance tester
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Abstract
The utility model relates to an insulation resistance tester prevent slow-witted test sample spare, include the base member unanimous with electric core actual shape, be fixed with anodal conducting strip and negative pole conducting strip on the terminal surface of base member, the fixed position of anodal conducting strip, negative pole conducting strip is unanimous with the position of the actual anodal conducting strip of electric core, negative pole conducting strip, is connected with the resistance of resistance for the technology definite value between anodal conducting strip and the negative pole conducting strip. The utility model discloses a design has the fool-proof test sample spare of resistance fixed, adopts the standard resistance as challenge piece to calibrate the insulation resistance tester, effectively ensures insulation resistance tester work at steady state, has guaranteed the stability and the uniformity of battery in process of production, and the effectual battery that has avoided having the short circuit risk flows toward the customer in hand.
Description
Technical Field
The utility model belongs to the technical field of insulation resistance tester's the fool-proof test, concretely relates to insulation resistance tester's fool-proof test sample spare.
background
Lithium ion batteries are widely used in mobile electronic devices, passenger automobiles, and various energy storage devices due to their high energy density. In the production process of the lithium battery, because the introduction of metal chips, dust and foreign matters can cause short circuit inside the battery, a plurality of devices for detecting the short circuit are distributed on an assembly line, for example, a power battery module FT1 test system provided by Chinese patent with the publication number of CN207232346U, the test system comprises a contact resistance tester, an insulation tester and a voltage acquisition tester, and in order to ensure the truth and effectiveness of the short circuit detection device, the short circuit detection device needs to be subjected to fool-proof test regularly.
In the manufacturing process of the battery, generally, the processes of slurry mixing, coating, roll cutting, winding/laminating, assembling, drying, liquid injection, formation and the like are carried out, metal chips, dust, foreign matters and the like can be introduced in the processes of slurry mixing, coating, roll cutting and winding/laminating, and the wound battery cell is the first process of a short circuit test in the manufacturing process of the battery cell, so that the first insulation resistance test is carried out on the battery after winding; metal dust is introduced during ultrasonic tab welding, so that an insulation internal resistance test is performed after an ultrasonic welding station; after the battery is sealed in a shell, because the state of a battery core tab changes and metal chips are introduced by the friction between the shell and a cover plate, an insulation internal resistance test is generally carried out after the sealing; after the battery is dried, the defects of the diaphragm are amplified due to the thermal shrinkage of the diaphragm, so an insulation internal resistance test is generally carried out after the battery is dried. If the short-circuit cell can be picked out in time in the assembly process, the cost of expensive materials can be saved. The multi-core tab is picked out in time before welding to avoid scrapping of other cores, and if the multi-core tab is laminated, the multi-core tab can be repaired/reworked in time, so that the effectiveness of insulation internal resistance testing of each procedure is ensured, and the multi-core tab has a vital effect on controlling the production cost. The last procedure of short circuit detection is carried out after drying, if the insulation internal resistance tester fails, the short-circuit battery flows to the formation procedure, and the phenomena of bulging, ignition, explosion and the like can occur. If the micro-short circuit battery is not selected in the formation self-discharge testing process and flows into the hands of a client, the potential safety hazard is further caused.
In order to ensure the effectiveness of the insulation internal resistance test, short-circuit cells/batteries recently produced in the current process are generally used as error-proof samples to perform fool-proof test, and an insulation internal resistance tester is calibrated, wherein the cells/batteries with internal resistance values slightly lower than or higher than a process defined value are not easy to obtain the process defined value, namely, a standard for judging whether the batteries are short-circuited, the cells/batteries are judged to be short-circuited below the process defined value, the cells/batteries are judged to be qualified above the process defined value, and the defined value for battery short-circuit judgment according to experience is 5M omega. And the internal resistance value of the battery core/battery is greatly changed after multiple measurements, so that a standard part is generally used for fool-proof test instead of a challenge part, the challenge part is a specially manufactured limit tool/limit product close to a process defined value, the standard part is an OK/NG sample part for production, the internal resistance value of the OK/NG sample part is uncertain, and the difference between the internal resistance value and the process defined value is usually large. The device uses the limiting component to perform fool-proofing test, and a micro short circuit cell can exist, namely, a cell with a resistance value slightly lower than a process defined value flows to the next procedure, or a cell with a resistance value slightly higher than the process defined value is mistakenly picked to cause unnecessary scrapping of the cell.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an insulation resistance tester prevent slow-witted test sample spare for when solving prior art and adopting the limit piece as preventing slow-witted test sample spare, the resistance of limit piece is not equal to the unreliable problem of preventing slow-witted test of insulation resistance tester that the technology defined the value and result in.
for solving the technical problem, the utility model provides an insulation resistance tester prevent slow-witted test sample spare, include the base member unanimous with the actual shape of electricity core, be fixed with anodal conducting strip and negative pole conducting strip on the terminal surface of base member, the fixed position of anodal conducting strip, negative pole conducting strip is unanimous with the position of the actual anodal conducting strip of electricity core, negative pole conducting strip, is connected with the resistance of resistance for the technological demarcation value between anodal conducting strip and the negative pole conducting strip.
The utility model discloses a design has the fool-proof test sample spare of resistance fixed, adopts the standard resistance that can regard as challenge piece to calibrate the insulation resistance tester, effectively ensures insulation resistance tester work at steady state, has guaranteed the stability and the uniformity of battery in process of production, and the effectual battery that has avoided having the short circuit risk flows toward the customer in hand.
In order to ensure the fixed connection between the end face of the substrate and the positive and negative conductive sheets, further, the positive conductive sheet and the negative conductive sheet are fixed to the end face of the substrate through a support structure.
In order to ensure the supporting effect of the supporting structure, the supporting structure is a step, and the step is fixedly connected with the end face of the base body; alternatively, the step is integrally formed with the base body through the end surface of the base body.
in order to protect the resistor, a clamping cover for protecting the resistor is further arranged above the resistor and is used as a supporting device of the resistor.
The resistance is a slide rheostat with scales, and the slide rheostat with the scales can be manually adjusted to realize free switching among different resistance values, so that the resistance can be used as a challenge piece of a fool-proof test and a standard piece of the fool-proof test. When the technological parameters are changed, the process can be freely switched, and the foolproof test sample does not need to be manufactured again.
Drawings
Fig. 1 is a schematic diagram of a fool-proof test sample of an insulation resistance tester according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a foolproof test sample of the insulation resistance tester according to the second embodiment of the present invention;
The reference numerals in fig. 1 are explained as follows:
1-positive conducting strip, 2-standard resistor, 3-negative conducting strip, 4-matrix;
The reference numerals in fig. 2 are explained as follows:
9-positive conductive sheet, 10-sliding rheostat, 11-negative conductive sheet, 12-substrate.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings.
The first embodiment is as follows:
A prevent slow-witted test sample spare of insulation resistance tester as shown in fig. 1, include the base member 4 unanimous with the actual shape of electric core, be fixed with anodal conducting strip 1 and negative pole conducting strip 3 on the terminal surface of base member 4, the fixed position of anodal conducting strip 1, negative pole conducting strip 3 is unanimous with the actual anodal conducting strip of electric core, the position of negative pole conducting strip, is connected with standard resistance 2 between anodal conducting strip 1 and the negative pole conducting strip 3, and the resistance of standard resistance 2 is the technology demarcation value.
The positive conducting plate 1 and the negative conducting plate 3 are fixed on the end surface of the base body 4 through the supporting structure, so that the positive conducting plate 1 and the negative conducting plate 3 are supported by the supporting structure, and the fixing effect of the positive conducting plate 1 and the negative conducting plate 3 on the end surface of the base body 4 is ensured.
The support structure is preferably a step which is fixedly connected to the end face of the base body 4, but as another embodiment, the step may be integrally formed with the base body 4 through the end face of the base body 4.
for protecting the resistor, a clamping cover is arranged above the resistor and used as a supporting device of the resistor, and when the resistor is not required to be tested, the clamping cover covers the resistor to play a role in protection.
Specifically, a tool with a shape of a battery cell is made of high-temperature-resistant and pressure-resistant insulating rubber, a step is milled at the front end of the tool, an aluminum conducting plate is used as a positive conducting plate 1 and is bonded to one side of the tool, a copper conducting plate is used as a negative conducting plate 3 and is bonded to the other side of the tool, and the positions are shown in fig. 1. Two ends of the standard resistor 2 are respectively connected with the positive/negative electrode conducting strips, and a square clamping cover is arranged right above the standard resistor 2 and used as a supporting device for protecting the standard resistor 2. In addition, the tool is a structure that the base body and the step are integrally formed.
The utility model discloses choose the standard internal resistance of resistance for the technology definite value for use, two wires are drawn forth to the standard internal resistance, and the both ends of electric wire have connect red and black metal clip respectively and are used for distinguishing positive negative pole. Because the insulation internal resistance test is a high-voltage test, in order to ensure the safety of operation, the standard internal resistance, the conducting wire and the clamp are all protected by insulation layers.
The utility model discloses a standard resistance 2 is when using at the fool-proof test sample spare of preparation insulation resistance tester, will prevent that the fool-proof test sample spare is put hot pressing (coiling electricity core)/coldly presses (lamination electricity core) survey short circuit production line on, when preventing that the fool-proof test sample spare flows into along with normal electricity core and surveys the short circuit station, insulation resistance tester's probe pushes down on the positive/negative pole conducting strip, the internal resistance value of insulation resistance tester output is the resistance of connecting standard resistance 2 between the positive/negative pole conducting strip promptly. If the resistance value of the standard resistor 2 is smaller than the set judgment value, if the insulation resistance tester gives an alarm during testing, the foolproof test sample piece is taken out as a short circuit cell, the foolproof test flow of the insulation resistance tester is finished, and the insulation resistance tester is considered to work normally; otherwise, if the insulation resistance tester does not give an alarm during testing, the equipment is judged to be abnormal. If the resistance value of the standard resistor 2 is larger than the set judgment value, if the insulation resistance tester does not give an alarm during testing, the fool-proof test sample piece normally circulates on the production line, the fool-proof test flow of the insulation resistance tester is completed, and the insulation resistance tester is judged to normally work, otherwise, if the insulation resistance tester gives an alarm during testing, the insulation resistance tester is judged to be abnormal.
The utility model discloses a standard resistance of known resistance prevents slow-witted test as challenge piece to the insulation resistance tester, can effectually ensure insulation resistance tester work at stable state. The short-circuit battery and the micro-short-circuit battery are effectively prevented from flowing to the next procedure due to failure and instability of equipment, scrapping of expensive materials is avoided, and potential safety hazards of finished batteries are reduced.
Additionally, the utility model discloses can also lay the standard resistance of known resistance to the frock that has coiling/lamination back electric core shape, this frock requirement has high temperature resistant, resistance to compression and insulating ability. And the left and right wires of the standard resistor are respectively connected with the lug model.
the tool for manufacturing the standard internal resistance with the known resistance into the shape of the wound/laminated cell can automatically test the fool-proof performance of the equipment without stopping the equipment. Because insulating internal resistance tester and the automatic robot of choosing the defective products belong to different mechanisms, utilize the frock to walk the transfer machine and not only can carry out the mistake proofing to insulating internal resistance tester's validity, can carry out the mistake proofing test to the robot of choosing the defective products moreover to realized that the defective products of test can be chosen by automatic, accomplished a whole set of mistake proofing test.
Example two:
The fool-proof test sample piece of the insulation resistance tester shown in fig. 2 comprises a base body 12 consistent with the actual shape of the battery cell, wherein an anode conducting strip 9 and a cathode conducting strip 11 are fixed on the end surface of the base body 12, the fixed positions of the anode conducting strip 9 and the cathode conducting strip 11 are consistent with the actual positions of the anode conducting strip and the cathode conducting strip of the battery cell, and a slide rheostat 10 with scales is connected between the anode conducting strip 9 and the cathode conducting strip 11.
The difference between the second embodiment and the first embodiment is that the slide rheostat 10 with scales can be manually adjusted to replace a standard resistor, so that free switching between different resistance values can be realized, and the slide rheostat can be used as a challenge piece for a fool-proof test and a standard piece for the fool-proof test. When the process definition value is changed, the resistance value of the slide rheostat 10 is adjusted, the free switching of the resistance value of the slide rheostat is realized, and a foolproof test sample piece does not need to be manufactured again.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.
Claims (6)
1. The utility model provides an insulation resistance tester prevent slow-witted test sample spare, its characterized in that includes the base member unanimous with electric core actual shape, is fixed with anodal conducting strip and negative pole conducting strip on the terminal surface of base member, and the fixed position of anodal conducting strip, negative pole conducting strip is unanimous with the position of the actual anodal conducting strip of electric core, negative pole conducting strip, is connected with the resistance of resistance for the technology definite value between anodal conducting strip and the negative pole conducting strip.
2. The insulation resistance tester fool-proof test sample according to claim 1, wherein the positive conductive sheet and the negative conductive sheet are fixed to the end face of the base body by a support structure.
3. The insulation resistance tester fool-proof test sample according to claim 2, wherein the supporting structure is a step, and the step is fixedly connected with the end face of the base body.
4. The insulation resistance tester fool-proof test sample according to claim 2, wherein the supporting structure is a step, and the step is integrally formed with the base body through an end surface of the base body.
5. The insulation resistance tester fool-proof test sample according to claim 1, wherein a card cover for protecting the resistor is arranged above the resistor.
6. the insulation resistance tester fool-proof test sample according to claim 1, wherein the resistor is a scaled sliding rheostat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920027513.XU CN209784508U (en) | 2019-01-08 | 2019-01-08 | Insulation resistance tester prevent slow-witted test sample spare |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920027513.XU CN209784508U (en) | 2019-01-08 | 2019-01-08 | Insulation resistance tester prevent slow-witted test sample spare |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209784508U true CN209784508U (en) | 2019-12-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920027513.XU Active CN209784508U (en) | 2019-01-08 | 2019-01-08 | Insulation resistance tester prevent slow-witted test sample spare |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209784508U (en) |
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2019
- 2019-01-08 CN CN201920027513.XU patent/CN209784508U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220110 Address after: No.1 Jiangdong Avenue, Jintan District, Changzhou City, Jiangsu Province Patentee after: Zhongchuangxin Aviation Technology Co.,Ltd. Address before: No.66, Binhe North Road, high tech Development Zone, Luoyang City, Henan Province Patentee before: CHINA AVIATION LITHIUM BATTERY Co.,Ltd. |
|
| TR01 | Transfer of patent right |