CN202583111U - Detection device - Google Patents
Detection device Download PDFInfo
- Publication number
- CN202583111U CN202583111U CN 201120559690 CN201120559690U CN202583111U CN 202583111 U CN202583111 U CN 202583111U CN 201120559690 CN201120559690 CN 201120559690 CN 201120559690 U CN201120559690 U CN 201120559690U CN 202583111 U CN202583111 U CN 202583111U
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- processor
- lithium battery
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- electronic load
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Abstract
The utility model belongs to the technical field of detection devices, and particularly relates to a device for detecting the quality of welding between an electrical core and a guard plate in a lithium battery pack. The device comprises a processor, as well as a display, a communication module and an electronic load, wherein the display and the communication module are electrically connected with the processor respectively; the electronic load is connected with the lithium battery pack; and the processor, the electronic load and the display are respectively connected with a power supply. Compared with the prior art, the device converts a traditional the subjective visual judgment to an objective quantificational detection method, overcomes the destructiveness defect in a tensile test, and is convenient and rapid, thereby improving the detection accuracy, saving the detection time, and facilitating improvement of the production efficiency.
Description
Technical field
The utility model belongs to the checkout equipment technical field, relates in particular to a kind of equipment that detects the welding quality between the electric core and fender in the lithium battery group.
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 equipment that can detect the welding quality between electric core and the fender quickly and accurately is provided.
The utility model content
The purpose of the utility model 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 utility model 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 utility model 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 utility model 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 the utility model checkout equipment, be provided with central processing unit (CPU) in the said processor.
Description of drawings
Fig. 1 is the circuit block diagram of the utility model.
Embodiment
Below in conjunction with embodiment and Figure of description, the utility model is described in further detail, but the embodiment of the utility model is not limited thereto.
As shown in Figure 1; The checkout equipment of the utility model; Comprise 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, 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 the checkout equipment of the utility model 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 utility model 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, the utility model those skilled in the art can also change and revise above-mentioned embodiment.Therefore, the embodiment that discloses and describe above the utility model is not limited to is in the protection domain of the claim that also should fall into the utility model to some modifications and the change of the utility model.In addition, although used some specific terms in this instructions, these terms are explanation for ease just, the utility model is not constituted any restriction.
Claims (2)
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 in the said processor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120559690 CN202583111U (en) | 2011-12-29 | 2011-12-29 | Detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120559690 CN202583111U (en) | 2011-12-29 | 2011-12-29 | Detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202583111U true CN202583111U (en) | 2012-12-05 |
Family
ID=47252512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120559690 Expired - Lifetime CN202583111U (en) | 2011-12-29 | 2011-12-29 | Detection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202583111U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590290A (en) * | 2011-12-29 | 2012-07-18 | 东莞新能德科技有限公司 | Detection device and detection method |
| CN108181356A (en) * | 2018-01-11 | 2018-06-19 | 哈尔滨理工大学 | A kind of measuring method of welding battery quality |
-
2011
- 2011-12-29 CN CN 201120559690 patent/CN202583111U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102590290A (en) * | 2011-12-29 | 2012-07-18 | 东莞新能德科技有限公司 | Detection device and detection method |
| CN108181356A (en) * | 2018-01-11 | 2018-06-19 | 哈尔滨理工大学 | A kind of measuring method of welding battery quality |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121205 |