CN102590290A - Detection device and detection method - Google Patents
Detection device and detection method Download PDFInfo
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- CN102590290A CN102590290A CN2011104479986A CN201110447998A CN102590290A CN 102590290 A CN102590290 A CN 102590290A CN 2011104479986 A CN2011104479986 A CN 2011104479986A CN 201110447998 A CN201110447998 A CN 201110447998A CN 102590290 A CN102590290 A CN 102590290A
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Abstract
The invention belongs to the technical field of detection devices, particularly relates to a device for detecting welding quality between a battery cell and a protective board in a lithium battery pack, and comprises a processor, a display, a communication module and an electronic load, wherein the display and the communication module are respectively and electrically connected with the processor, and the electronic load is connected with the lithium battery pack. The processor, the electronic load and the display are respectively connected with a power source. Compared with the prior art, the detection device utilizes an objective quantitative detection method to replace a traditional subjective visual judgment detection method, so that the shortcoming of destructive effects of a tensile test is overcome, the detection device is convenient and fast, accuracy of the detection is improved, detection time is saved, and production efficiency is improved. Besides, the invention further discloses a method utilizing the device to perform detection.
Description
Technical field
The invention belongs to the checkout equipment technical field, relate in particular to a kind of equipment of the welding quality between the electric core and fender in the lithium battery group and method that adopts this equipment to detect of detecting.
Background technology
Along with the development of twentieth century microelectric technique, the equipment of miniaturization is increasing, has also therefore obtained large-scale development as the battery of these equipment energy supply elements.Wherein, lithium secondary battery not only has advantages such as voltage platform height, energy density is high, self discharge is little as a kind of clean energy resource, has been widely used in numerous areas.
And along with the development of various compact apparatus, people have proposed increasingly high requirement to lithium secondary battery.An importance of the raising of battery quality is to improve production technology.Wherein, in the manufacture process of lithium battery group, electric core and the fender that places electric core front end are through being welded together, and welding quality directly influences the performance quality of lithium battery group.
Welding technology between current electric core and the fender mainly contains ERW, Laser Welding (LBW), spot welding, ultrasonic bond and soldering.At present, the detection method to the welding quality that is obtained by these welding technologys mainly contains two kinds, i.e. visual examination and tensile test.The shortcoming of these two kinds of detection methods is stated as follows:
The one, the difficult discovery of visual examination dry joint etc. are bad, and subjectivity is strong, and when inspection comprised the lithium battery group of a plurality of electric cores, efficient was low, time-consuming.
The 2nd, tensile test belongs to destructive testing, and frock clamp is bigger to the test result influence.
The 3rd, these two kinds of detection methods all do not have data recording one to one, are not easy to the foundation of product information traceability system.
This shows that these detection methods that adopt at present all can not detect the welding quality between electric core and the fender quickly and accurately, cheaply.
In view of this, necessary a kind of method that can detect the equipment of the welding quality between electric core and the fender quickly and accurately and adopt this equipment to detect is provided.
Summary of the invention
One of the object of the invention is: to the deficiency of prior art, and a kind of equipment that can detect the welding quality between electric core and the fender quickly and accurately, cheaply is provided.
In order to achieve the above object, the present invention adopts following technical scheme:
A kind of checkout equipment comprises processor and the display, communication module group and the electronic load that is connected with the lithium battery group that are electrically connected with said processor respectively, and said processor, electronic load and display are connected with power supply respectively.The present invention calculates the dynamic internal resistance of battery of this current point through gathering lithium battery with magnitude of voltage and this current value of rated current after discharge a period of time.The battery of same model, with constant current discharge, the distribution of the dynamic internal resistance value that calculates should be normal distribution, thereby draws the control specification of the dynamic internal resistance of this current point.The battery of failure welding between electricity core and the fender, the dynamic internal resistance value that measures will exceed specification.Thereby can judge whether the welding quality of electric core and fender welding is qualified with the dynamic internal resistance of lithium battery group.The present invention changes traditional subjective visual judgement the detection method of objective quantification into, and has overcome the destructive shortcoming of tensile test, and is convenient and swift, thereby improved the accuracy that detects, and saves the supervision time, helps enhancing productivity.
Wherein, the lithium battery group has voltameter.
As a kind of improvement of checkout equipment of the present invention, be provided with central processing unit (CPU) in the said processor.
Another object of the present invention is to provide a kind of detection method that adopts this equipment to detect, and comprises the steps:
The first step, to electronic load, processor is to constant load of lithium battery group with lithium battery winding to be detected, and communication module group is with in magnitude of voltage U that collects and the current value I input processor;
Second step, the control specification of setting discharge time and dynamic internal resistance on processor, processor calculates the dynamic internal resistance of lithium battery group;
Whether in the 3rd step, it is qualified to judge through the computing machine formula, and testing result is presented on the display.
As a kind of improvement of detection method of the present invention, the dynamic internal resistance of said lithium battery group is to press pressure drop to obtain through calculating U/I acquired signal circuit in the discharge of setting-up time.
To the multi-series lithium battery group that has voltameter, the pressure drop of each electric core in the time of collecting discharge through communication module group, thus lock onto the problem that is welded with between which electric core and the fender.
As a kind of improvement of detection method of the present invention, with lithium battery winding to be detected before electronic load, adopt the bar code of scanner scans battery.
The test data of the dynamic internal resistance of lithium battery that record is corresponding one by one, thus the product information traceability system set up, be convenient to production scene slip-stick artist's data analysis and review unusually.
With respect to prior art, detection method of the present invention can conveniently detect the method for the welding quality between the electric core and fender in the lithium battery group accurately, and the lithium battery that is particularly suitable for how electric core is checked.Help enhancing productivity, have stronger practicality and promotional value.
Description of drawings
Fig. 1 is a circuit block diagram of the present invention.
Embodiment
Below in conjunction with embodiment and Figure of description, the present invention is described in further detail, but embodiment of the present invention is not limited thereto.
As shown in Figure 1, checkout equipment of the present invention comprises processor 3 and the display 1, communication module group 5 and the electronic load 4 that is connected with the lithium battery group that are electrically connected with said processor 3 respectively, and said processor 3, electronic load 4 are connected with power supply 2 respectively with display 1.Wherein, be provided with central processing unit (CPU) 31 in the said processor 3, the lithium battery group has voltameter, and communication module group 5 can be carried out communication with the electric battery that has voltameter, can gather magnitude of voltage U and current value I simultaneously.
The principle of work of checkout equipment of the present invention is: through gathering lithium battery with magnitude of voltage and this current value of rated current after discharge a period of time, calculate the dynamic internal resistance of battery of this current point.The battery of same model, with constant current discharge, the distribution of the dynamic internal resistance value that calculates should be normal distribution, thereby draws the control specification of the dynamic internal resistance of this current point.The battery of failure welding between electricity core and the fender, the dynamic internal resistance value that measures will exceed specification.Thereby can judge whether the welding quality of electric core and fender welding is qualified with the dynamic internal resistance of lithium battery group.
Utilize in this Equipment Inspection lithium battery group the method for welding quality between the electric core and fender, may further comprise the steps:
The first step; Adopt the bar code of scanner scans battery earlier; To electronic load 4, processor 3 is to constant load of lithium battery group, under this constant load with lithium battery winding to be detected; The voltage of lithium battery group end descends fast, and communication module group 5 is with in magnitude of voltage U that collects and the current value I input processor;
Second step, the control specification of setting discharge time and dynamic internal resistance on processor 3, processor 3 calculates the dynamic internal resistance of lithium battery group through calculating the discharge pressure pressure drop of U/I acquired signal circuit at setting-up time;
Whether in the 3rd step, it is qualified to judge through the computing machine formula, and testing result is presented on the display 1.
To the multi-string battery group that has voltameter, the pressure drop of each electric core in the time of collecting discharge through communication module group 5, thus lock onto the problem that is welded with between which electric core and the fender.
The present invention changes traditional subjective visual judgement the detection method of objective quantification into, and has overcome the destructive shortcoming of tensile test, and is convenient and swift, thereby improved the accuracy that detects, and saves the supervision time, helps enhancing productivity.
According to the announcement and the instruction of above-mentioned instructions, those skilled in the art in the invention can also change and revise above-mentioned embodiment.Therefore, the embodiment that discloses and describe above the present invention is not limited to also should fall in the protection domain of claim of the present invention modifications more of the present invention and change.In addition, although used some specific terms in this instructions, these terms are explanation for ease just, the present invention is not constituted any restriction.
Claims (5)
1. checkout equipment is characterized in that: comprise processor and the display, communication module group and the electronic load that is connected with the lithium battery group that are electrically connected with said processor respectively, said processor, electronic load and display are connected with power supply respectively.
2. checkout equipment according to claim 1 is characterized in that: be provided with central processing unit (CPU) in the said processor.
3. a detection method is characterized in that, may further comprise the steps:
The first step, to electronic load, processor is to constant load of lithium battery group with lithium battery winding to be detected, and communication module group is with in magnitude of voltage U that collects and the current value I input processor;
Second step, the control specification of setting discharge time and dynamic internal resistance on processor, processor calculates the dynamic internal resistance of lithium battery group;
Whether in the 3rd step, it is qualified to judge through the computing machine formula, and testing result is presented on the display.
4. detection method according to claim 3 is characterized in that: the dynamic internal resistance of said lithium battery group is to press pressure drop to obtain through calculating U/I acquired signal circuit in the discharge of setting-up time.
5. detection method according to claim 3 is characterized in that: with lithium battery winding to be detected before electronic load, adopt the bar code of scanner scans battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104479986A CN102590290A (en) | 2011-12-29 | 2011-12-29 | Detection device and detection method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011104479986A CN102590290A (en) | 2011-12-29 | 2011-12-29 | Detection device and detection method |
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| CN102590290A true CN102590290A (en) | 2012-07-18 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062599A (en) * | 2014-07-10 | 2014-09-24 | 海芝通电子(深圳)有限公司 | Mobile phone battery detection method |
| CN107064226A (en) * | 2017-02-17 | 2017-08-18 | 欣旺达电动汽车电池有限公司 | One kind welding method of testing |
| CN107884720A (en) * | 2017-11-09 | 2018-04-06 | 常州普莱德新能源电池科技有限公司 | Detection method and detection means for battery modules leak inductance |
| CN108181356A (en) * | 2018-01-11 | 2018-06-19 | 哈尔滨理工大学 | A kind of measuring method of welding battery quality |
| CN112985984A (en) * | 2020-12-14 | 2021-06-18 | 系统电子科技（镇江）有限公司 | Many electric core solder joints quality detection device |
| CN114200331A (en) * | 2021-12-06 | 2022-03-18 | 广州小鹏汽车科技有限公司 | Vehicle battery detection method and device, vehicle and storage medium |
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| CN201266219Y (en) * | 2008-07-03 | 2009-07-01 | 河北天翼科贸发展有限公司 | Accumulator internal resistance tester |
| CN201385187Y (en) * | 2009-03-13 | 2010-01-20 | 天津力神电池股份有限公司 | Universal type welding device for high-capacity power lithium batteries |
| CN201667367U (en) * | 2010-04-01 | 2010-12-08 | 陈清波 | Cylindrical lithium battery and assembled cap |
| CN201935992U (en) * | 2010-12-29 | 2011-08-17 | 段万普 | Detector for retaining capacity of storage battery |
| CN202583111U (en) * | 2011-12-29 | 2012-12-05 | 东莞新能德科技有限公司 | Detection device |
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| CN86210102U (en) * | 1986-12-13 | 1987-12-05 | 哈尔滨工业大学 | Microcomputerized battery internal resistance tester |
| CN201266219Y (en) * | 2008-07-03 | 2009-07-01 | 河北天翼科贸发展有限公司 | Accumulator internal resistance tester |
| CN201385187Y (en) * | 2009-03-13 | 2010-01-20 | 天津力神电池股份有限公司 | Universal type welding device for high-capacity power lithium batteries |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104062599A (en) * | 2014-07-10 | 2014-09-24 | 海芝通电子(深圳)有限公司 | Mobile phone battery detection method |
| CN107064226A (en) * | 2017-02-17 | 2017-08-18 | 欣旺达电动汽车电池有限公司 | One kind welding method of testing |
| CN107884720A (en) * | 2017-11-09 | 2018-04-06 | 常州普莱德新能源电池科技有限公司 | Detection method and detection means for battery modules leak inductance |
| CN107884720B (en) * | 2017-11-09 | 2020-05-08 | 常州普莱德新能源电池科技有限公司 | Detection method and detection device for battery module missing welding detection |
| CN108181356A (en) * | 2018-01-11 | 2018-06-19 | 哈尔滨理工大学 | A kind of measuring method of welding battery quality |
| CN112985984A (en) * | 2020-12-14 | 2021-06-18 | 系统电子科技（镇江）有限公司 | Many electric core solder joints quality detection device |
| CN114200331A (en) * | 2021-12-06 | 2022-03-18 | 广州小鹏汽车科技有限公司 | Vehicle battery detection method and device, vehicle and storage medium |
| CN114200331B (en) * | 2021-12-06 | 2023-09-12 | 广州小鹏汽车科技有限公司 | Method and device for detecting vehicle battery, vehicle and storage medium |
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Application publication date: 20120718 |