CN212483800U - Detection apparatus for battery core - Google Patents
Detection apparatus for battery core Download PDFInfo
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- CN212483800U CN212483800U CN202020698491.2U CN202020698491U CN212483800U CN 212483800 U CN212483800 U CN 212483800U CN 202020698491 U CN202020698491 U CN 202020698491U CN 212483800 U CN212483800 U CN 212483800U
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Abstract
The utility model provides a detection apparatus for battery electricity core belongs to battery detection area. The device comprises: the capacitance tester is used for detecting the capacitance value of the battery cell; the insulation resistance tester is used for detecting the insulation resistance of the battery cell; and the data processing device is in signal connection with the capacitance tester and the insulation resistance tester and is used for acquiring capacitance values and insulation resistance values of a plurality of battery cells and determining whether the battery cells accord with consistency according to the capacitance values and the insulation resistance values. The utility model discloses a capacitance value that capacitance tester detected electric core detects the insulating resistance through insulating resistance tester, and rethread data processing apparatus handles capacitance value data and insulating resistance data, judges the uniformity of electric core according to these two kinds of parameters of capacitance value and insulating resistance, synthesizes the dual detection standard of capacitance value survey and insulating resistance survey, improves the accuracy that electric core detected, promotes the relevance ratio of hidden danger electric core.
Description
Technical Field
The utility model relates to a battery test field specifically relates to a detection apparatus of battery electricity core.
Background
Lithium ion batteries have the advantages of high specific energy, many cycle times, long storage time and the like, and are widely applied to various fields, such as electric bicycles, electric automobiles, mobile base stations, energy storage power stations and the like. The battery pack is usually composed of a plurality of single battery cells in series-parallel connection, and the capacity and the service life of the battery pack are not only related to each single battery cell, but also related to consistency among each battery cell. In the manufacturing process of the battery cell, more inconsistency exists, such as the difference of a positive pole piece and a negative pole piece, the difference of the hot pressing effect of a pole group, the difference of welding of pole lugs and the like, and the consistency of the battery cell is poor due to the differences; for example, the difference of the electrical core performance can be caused after various inconsistencies such as the alignment degree of the lamination, the melting degree of the preheated diaphragm glue layer, the hot pressing effect, the tab welding effect, the connecting sheet welding effect, the diaphragm incoming material quality and the like are superposed, and hidden danger is buried in the safety of the battery pack.
At present, the consistency of the battery cell is detected by adopting a mode of testing the voltage and the internal resistance of the battery cell, but the detection rate of the mode is not high, and the accuracy is lower.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a detection apparatus of battery electricity core to improve the detectable rate and the detection accuracy of electric core.
In order to achieve the above object, the utility model provides a detection device of battery electricity core, the device includes:
the capacitance tester is used for detecting the capacitance value of the battery cell;
the insulation resistance tester is used for detecting the insulation resistance of the battery cell;
and the data processing device is in signal connection with the capacitance tester and the insulation resistance tester and is used for acquiring capacitance values and insulation resistance values of a plurality of battery cells and determining whether the battery cells accord with consistency according to the capacitance values and the insulation resistance values.
Further, the capacitance tester is provided with a first probe portion, the first probe portion comprises a first positive electrode probe and a first negative electrode probe, the first positive electrode probe corresponds to the positive electrode pole of the battery cell, and the first negative electrode probe corresponds to the negative electrode pole of the battery cell.
Further, the insulation resistance tester is provided with a second probe portion, the second probe portion comprises a second positive electrode probe and a second negative electrode probe, the second positive electrode probe corresponds to the positive electrode pole of the battery cell, and the second negative electrode probe corresponds to the negative electrode pole of the battery cell.
Further, the device also comprises a detection table, and the detection table is used for positioning and conveying the battery core.
Further, determining whether the plurality of battery cells conform to consistency according to the capacitance values and the insulation resistance values includes:
judging whether the capacitance values of the plurality of battery cells are all in a capacitance value standard range and whether the insulation resistance values of the plurality of battery cells are all in an insulation resistance value standard range;
and if the capacitance values of the plurality of battery cells are all in the capacitance value standard range and the insulation resistance values of the plurality of battery cells are all in the insulation resistance value standard range, determining that the plurality of battery cells conform to consistency.
Further, the standard capacitance range is obtained by a capacitance moving range diagram generated according to capacitance values of a plurality of the battery cells; the standard range of the insulation resistance value is obtained according to an insulation resistance value moving range diagram generated by insulation resistance values of a plurality of the battery cells.
Further, the data processing device is an industrial computer, and the industrial computer generates the capacitance value movement range diagram and the insulation resistance value movement range diagram through a built-in program.
The utility model discloses a capacitance value that capacitance tester detected electric core detects the insulating resistance through insulating resistance tester, and rethread data processing apparatus handles capacitance value data and insulating resistance data, judges the uniformity of electric core according to these two kinds of parameters of capacitance value and insulating resistance, can synthesize the dual detection standard of capacitance value survey and insulating resistance survey, improves the accuracy that electric core detected, can greatly promote the relevance ratio of hidden danger (not conform to uniformity) electric core.
Other features and advantages of embodiments of the present invention will be described in detail in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments 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 embodiments of the invention, but do not constitute a limitation of the embodiments of the invention. In the drawings:
fig. 1 is a schematic diagram of a detection apparatus for a battery cell provided in an embodiment of the present invention;
fig. 2 is a graph of the capacitance shift range provided by the embodiment of the present invention;
fig. 3 is a diagram of the insulation resistance value shift range provided by the embodiment of the present invention.
Description of the reference numerals
10-data processing means, 20-capacitance tester, 21-first probe section, 22-first positive electrode probe,
23-a first negative probe, 30-an insulation resistance tester, 31-a second probe part,
32-a second positive electrode probe, 33-a second negative electrode probe, 40-an electric core, 41-a positive electrode pole,
42-cathode pole, 50-detection table.
Detailed Description
The following describes in detail embodiments of the present invention with reference to the accompanying drawings. It is to be understood that the description herein is only intended to illustrate and explain embodiments of the present invention, and is not intended to limit embodiments of the present invention.
"signal connection" as used herein is intended to mean a signal connection between two components, such as a control signal and a feedback signal; "connected" may be a direct connection between two elements or an indirect connection through a third element. The terms "first," "second," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Fig. 1 is a schematic diagram of a detection apparatus for a battery electric core provided in an embodiment of the present invention. As shown in fig. 1, the present embodiment provides a detection apparatus for battery cells, where the apparatus includes: a capacitance tester 20, an insulation resistance tester 30, and a data processing apparatus 10. The capacitance tester 20 is configured to detect a capacitance value of the battery cell 40. The capacitance tester 20 is provided with a first probe portion 21, the first probe portion 21 includes a first positive probe 22 and a first negative probe 23, the first positive probe 22 corresponds to the positive electrode post 41 of the battery cell 40, and the first negative probe 23 corresponds to the negative electrode post 42 of the battery cell 40. The insulation resistance tester 30 is configured to detect an insulation resistance of the battery cell 40. The insulation resistance tester 30 is provided with a second probe portion 31, the second probe portion 31 includes a second positive probe 32 and a second negative probe 33, the second positive probe 32 corresponds to the positive electrode post 41 of the battery cell 40, and the second negative probe 33 corresponds to the negative electrode post 42 of the battery cell 40. The data processing device 10 is in signal connection with the capacitance tester 20 and the insulation resistance tester 30, and is configured to obtain capacitance values and insulation resistance values of the plurality of battery cells 40, and determine whether the plurality of battery cells 40 conform to consistency according to the capacitance values and the insulation resistance values. Specifically, whether the capacitance values of the plurality of battery cells 40 are within the capacitance value standard range and whether the insulation resistance values of the plurality of battery cells 40 are within the insulation resistance value standard range are judged; if the capacitance values of the battery cells 40 are within the capacitance value standard range and the insulation resistance values of the battery cells 40 are within the insulation resistance value standard range, it is determined that the battery cells 40 conform to the consistency.
The data processing device 10 generates a capacitance value moving range diagram according to the capacitance values of the plurality of battery cells 40 to obtain the standard range of the capacitance values; and generating an insulation resistance value moving range diagram according to the insulation resistance values of the plurality of battery cores 40 to obtain the insulation resistance value standard range.
In this embodiment, the data processing apparatus 10 adopts an industrial computer, and the industrial computer is in signal connection with the capacitance tester 20 and the insulation resistance tester 30 to obtain a plurality of groups of capacitance value data detected by the capacitance tester and a plurality of groups of insulation resistance value data detected by the insulation resistance tester. The industrial computer records capacitance value data through a built-in program and generates a capacitance value moving range diagram according to the capacitance value data; and recording insulation resistance value data, and generating an insulation resistance value movement range diagram through the insulation resistance value data. Fig. 2 is a capacitance value moving range diagram provided by the embodiment of the present invention, the capacitance value moving range diagram shown in fig. 2, the abscissa represents the quantity of capacitance value data, the ordinate represents the moving range of the capacitance value, UCL represents the upper limit of the capacitance value standard range, LCL represents the lower limit of the capacitance value standard range, MR represents the average range of the capacitance value, and UCL and LCL are dynamic changes along with the change of the recorded capacitance value data. And if the capacitance value of a certain cell is not between the UCL and the LCL, judging that the cell does not accord with the consistency, and rejecting the cell. And if the capacitance values of the battery cells of the same model are between the UCL and the LCL, judging that the detected capacitance values of the battery cells of the same batch are consistent. Fig. 3 is an insulation resistance value moving range diagram provided by the embodiment of the present invention, the insulation resistance value moving range diagram shown in fig. 3, the abscissa represents the quantity of insulation resistance value data, the ordinate represents the moving range of insulation resistance value, UCL represents the upper limit of the insulation resistance value standard range, LCL represents the lower limit of the insulation resistance value standard range, MR represents the average range of insulation resistance value, and UCL and LCL are dynamic changes along with the change of the recorded insulation resistance value data. And if the insulation resistance value of a certain cell is not between the UCL and the LCL, judging that the cell does not accord with the consistency, and rejecting the cell. And if the capacitance values of the cells of the same model are between the UCL and the LCL, judging that the insulation resistance values of the detected cells of the same batch are consistent. And if the capacitance value and the insulation resistance value of the same battery cell are consistent, judging that the battery cell is consistent.
The detection device for battery cells of the present embodiment further includes a detection table 50, where the detection table 50 is used to position and convey the battery cells 40. The battery cell 40 is conveyed to the detection table 50 through a production line, and the detection table 50 conveys the battery cell 40 to the lower part of the insulation resistance tester 30, so that the positive pole column 41 and the negative pole column 42 of the battery cell 40 are respectively aligned with the second positive probe 32 and the second negative probe 33 of the insulation resistance tester 30. And (3) pressing the second positive probe 32 of the insulation resistance tester 30 down to the positive pole 41, and pressing the second negative probe 33 down to the negative pole 42 to measure the insulation resistance of the battery cell 40, and transmitting the insulation resistance to the industrial computer by the insulation resistance tester 30. The inspection station 50 conveys the battery cell 40 to the lower side of the capacitance tester 20, so that the positive electrode post 41 and the negative electrode post 42 of the battery cell 40 are aligned with the first positive electrode probe 22 and the first negative electrode probe 23 of the capacitance tester 20, respectively. The first positive probe 22 of the capacitance tester 20 is pressed down to the positive pole 41, and the first negative probe 23 is pressed down to the negative pole 42, so as to measure the capacitance value of the battery cell 40, and the capacitance tester 20 transmits the capacitance value to the industrial computer.
The embodiment of the utility model provides a capacitance value through electric capacity tester 20 detection electricity core 40 detects insulating resistance through insulating resistance tester 30, rethread data processing apparatus 10 handles capacitance value data and insulating resistance data, judges the uniformity of electric core according to these two kinds of parameters of capacitance value and insulating resistance, can synthesize the dual detection standard of capacitance value survey and insulating resistance survey, improve the accuracy that electric core detected, can greatly promote the relevance ratio of hidden danger (not conform to the uniformity) electric core.
The above describes in detail optional implementation manners of embodiments of the present invention with reference to the accompanying drawings, however, the embodiments of the present invention are not limited to the details in the above implementation manners, and in the technical concept scope of the embodiments of the present invention, it is possible to perform various simple modifications on the technical solutions of the embodiments of the present invention, and these simple modifications all belong to the protection scope of the embodiments of the present invention.
Claims (5)
1. A device for detecting battery cells, the device comprising:
the capacitance tester is used for detecting the capacitance value of the battery cell;
the insulation resistance tester is used for detecting the insulation resistance of the battery cell;
and the data processing device is in signal connection with the capacitance tester and the insulation resistance tester and is used for acquiring capacitance values and insulation resistance values of a plurality of battery cells and determining whether the battery cells accord with consistency according to the capacitance values and the insulation resistance values.
2. The device for detecting the battery electric core according to claim 1, wherein the capacitance tester is provided with a first probe portion, the first probe portion includes a first positive probe and a first negative probe, the first positive probe corresponds to a positive electrode post of the battery electric core, and the first negative probe corresponds to a negative electrode post of the battery electric core.
3. The device for detecting the battery electric core according to claim 1, wherein the insulation resistance tester is provided with a second probe portion, the second probe portion includes a second positive probe and a second negative probe, the second positive probe corresponds to the positive pole of the battery electric core, and the second negative probe corresponds to the negative pole of the battery electric core.
4. The apparatus of claim 1, further comprising a test station for positioning and transporting the cells.
5. The battery cell detection apparatus according to claim 1, wherein the data processing apparatus is an industrial computer, and the industrial computer generates a capacitance value movement range diagram according to capacitance values of the plurality of battery cells and an insulation resistance value movement range diagram according to insulation resistance values of the plurality of battery cells through a built-in program.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020698491.2U CN212483800U (en) | 2020-04-29 | 2020-04-29 | Detection apparatus for battery core |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020698491.2U CN212483800U (en) | 2020-04-29 | 2020-04-29 | Detection apparatus for battery core |
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| CN212483800U true CN212483800U (en) | 2021-02-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113433476A (en) * | 2021-05-31 | 2021-09-24 | 天津力神电池股份有限公司 | Method for detecting insulation defect inside lithium ion battery |
| CN113805082A (en) * | 2021-10-08 | 2021-12-17 | 合肥国轩高科动力能源有限公司 | Battery stacked core defect detection device and method |
-
2020
- 2020-04-29 CN CN202020698491.2U patent/CN212483800U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113433476A (en) * | 2021-05-31 | 2021-09-24 | 天津力神电池股份有限公司 | Method for detecting insulation defect inside lithium ion battery |
| CN113805082A (en) * | 2021-10-08 | 2021-12-17 | 合肥国轩高科动力能源有限公司 | Battery stacked core defect detection device and method |
| CN113805082B (en) * | 2021-10-08 | 2024-02-06 | 合肥国轩高科动力能源有限公司 | Battery core stacking defect detection device and method |
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