CN211784145U - Battery leakage detection equipment - Google Patents
Battery leakage detection equipment Download PDFInfo
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- CN211784145U CN211784145U CN202020505468.7U CN202020505468U CN211784145U CN 211784145 U CN211784145 U CN 211784145U CN 202020505468 U CN202020505468 U CN 202020505468U CN 211784145 U CN211784145 U CN 211784145U
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Abstract
An embodiment of the utility model provides a battery weeping check out test set belongs to the battery field. This battery weeping check out test set includes: the gas detection device is positioned on the battery to be detected and used for detecting the concentration of combustible gas components around the battery to be detected; the control device is connected with the gas detection device and is used for converting the concentration of the combustible gas component detected by the gas detection device into a voltage value; and the display device is connected with the control device and used for displaying the voltage value. The battery leakage detection equipment can well realize the leakage detection of the lithium ion battery, and has good real-time performance and safe method.
Description
Technical Field
The utility model relates to a battery field specifically relates to a battery weeping check out test set.
Background
With the wider application of the lithium ion battery, the quality safety problem of the lithium ion battery cannot be ignored. If the leakage condition occurs in the lithium ion battery with poor packaging, the normal performance of the lithium ion battery can be affected, and even serious safety problems can be caused, so that the detection of the leakage condition of the lithium ion battery is the key point for controlling the product quality.
Two methods are adopted in the related art to detect the leakage condition of the battery: one is to detect whether the battery leaks through a manual visual inspection, and the other is to detect the battery leakage by introducing gas (usually helium) into the battery.
Whether the battery leaks or not is detected in a manual appearance inspection mode, the leakage detection rate is high, the real-time performance of the detected leakage fault result is poor, and the battery leakage cannot be accurately known in time before the battery has great thermal runaway. And let in the detection mode that gas detected the weeping in to the battery, only be applicable to hard shell lithium ion battery, if be used for soft packet of lithium ion battery's weeping to detect, the volume of letting in helium is too much, will make electric core produce interior pressure and take place the inflation, makes electric core outward appearance unsatisfied the requirement and have great potential safety hazard.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a battery weeping check out test set is provided, this battery weeping check out test set can realize lithium ion battery's weeping well and detect, and the real-time is good, and the method is safe.
In order to achieve the above object, an embodiment of the utility model provides a battery weeping check out test set, this battery weeping check out test set, include: the gas detection device is positioned on the battery to be detected and used for detecting the concentration of combustible gas components around the battery to be detected; the control device is connected with the gas detection device and is used for converting the concentration of the combustible gas component detected by the gas detection device into a voltage value; and the display device is connected with the control device and used for displaying the voltage value.
Optionally, the gas detection device is a gas detection probe with a gas sensor.
Optionally, the gas detection device is a plurality of gas detection devices, and the plurality of gas detection devices are installed at different positions of the battery to be detected.
Optionally, the plurality of gas detection devices are three gas detection devices, and the three gas detection devices are respectively installed at the positive electrode tab, the negative electrode tab and the side seal position of the battery to be detected.
Optionally, the battery leakage detection device further comprises a closed test incubator, and the battery to be tested is placed in the closed test incubator.
Optionally, the battery leakage detection device further comprises a fixing device, installed on the detected battery, for fixing the detected battery.
Optionally, the fixing device is a tool clamp.
Optionally, the tooling fixture includes: the clamp comprises an upper clamp plate, a lower clamp plate, a bolt and a nut.
According to the technical scheme, the combustible gas component concentration of the combustible gas generated when the battery leaks is measured by using the gas detection device, the combustible gas component concentration of the combustible gas around the detected battery is converted into the voltage value by the control module, so that the change of the combustible gas component concentration is converted into the change of the voltage value, the voltage value is displayed by the display device, and whether the battery leaks or not and the time point of the leakage can be accurately and timely judged by observing the change of the voltage value numerical value or the collected voltage value change curve, so that the method is good in real-time performance and reliable and safe.
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 structural diagram of a battery leakage detection device according to an embodiment of the present invention;
fig. 2 is a side view of a schematic structural view of a gas detection device and a fixing device for detecting leakage of a battery according to an embodiment of the present invention;
fig. 3 is a top view of a schematic structural diagram of a gas detection device and a fixing device for detecting battery leakage according to an embodiment of the present invention;
fig. 4 is a circuit diagram of converting an output signal of a gas sensor into a voltage signal according to an embodiment of the present invention.
Description of the reference numerals
11 gas detection device 12 control device
13 display device 21 tested battery
22 upper clamping plate 23 lower clamping plate
24 bolt 25 nut
26 gas detection probe 27 positive lug
28 negative tab 29 side seal
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.
Fig. 1 is a schematic structural diagram of a battery leakage detection device according to an embodiment of the present invention. As shown in fig. 1, the battery leakage detection apparatus provided by the embodiment of the present invention includes a gas detection device 11, a control device 12, and a display device 13. The gas detection device 11 is connected with the control device 12, the gas detection device sends the detected concentration of the combustible gas components around the battery to be detected to the control device 12, the control device 12 converts the concentration of the combustible gas components into a voltage value, so that the change of the concentration of the combustible gas components is converted into the change of the voltage value, the control device 12 is connected with the display device 13, and the control device 12 sends the voltage value to the display device 13 for displaying.
Two methods can be adopted for detecting whether the battery leaks: firstly, the numerical value change of the voltage value displayed in the display device 13 is observed, if the acquired real-time voltage values are all stabilized at a level and sudden rise does not occur, the situation that the leakage of the battery does not occur is shown; if the collected real-time voltage value rises suddenly, indicating that the battery leaks, and obtaining accurate leakage time according to the time point corresponding to the voltage value; besides, a second method can be adopted to draw the voltage value collected from the display device 13 into a voltage value change curve, and if the curve is stable, the battery is proved not to have leakage; if the curve suddenly rises, the battery is indicated to have liquid leakage, and the time of the battery to have liquid leakage can be known according to the time point corresponding to the sudden rise of the curve. Therefore, whether the battery leaks or not and the time point of the leakage can be accurately and timely judged according to the voltage value displayed on the display device 13, and the method is good in real-time performance and reliable and safe.
Fig. 2 is a side view of the gas detection device and the fixing device structure schematic diagram when the battery weeping that an embodiment provides is examined, fig. 3 is the utility model discloses a top view of the gas detection device and the fixing device structure schematic diagram when the battery weeping that an embodiment provides examines. As shown in fig. 2 and 3, the gas detection device may be a gas detection probe 26. The battery leakage detection equipment can further comprise a fixing device, the detected battery 21 is installed and fixed through the fixing device, the fixing device can be preferably a tooling fixture, the tooling fixture comprises an upper clamping plate 22, a lower clamping plate 23, a bolt 24 and a nut 25, the detected battery 21 is fixed between the upper clamping plate 22 and the lower clamping plate 23, and the bolt 24 and the nut 25 play a role in fixing the upper clamping plate 22 and the lower clamping plate 23. In the present invention, it is preferable that the gas detection probe 26 with a gas sensor is used to detect the concentration of the flammable gas components around the battery to be tested, and the gas detection probe 26 is fixed around the battery to be tested 21, and the gas detection probe 26 can be temporarily fixed to the battery to be tested 21 with an adhesive tape during actual detection. When the battery leaks, the electrolyte reacts to generate combustible gas such as methane, acetylene, carbon monoxide and the like, so that the gas detection probe 26 can detect the change of the concentration of the combustible gas components around the battery 21 to be detected.
Figure 4 is a circuit diagram of a gas sensor output signal converted to a voltage signal according to an embodiment of the present invention, as shown in fig. 4, the input TGS2602 is a gas sensor in the gas detection probe 26, a gas sensitive resistor is connected between pins 2 and 3 in the gas sensor, a section of heating wire is connected between pins 1 and 4, when the power is turned on, the heating wire is preheated, in clean air, the resistance value of the gas-sensitive resistor is very large, no current signal is output from the No. 3 pin, when the gas-sensitive resistor meets a combustible target gas, the resistance value of the gas-sensitive resistor gradually becomes small, the higher the concentration of the combustible gas components is, the smaller the resistance value of the gas-sensitive resistor is, the tiny current signal linearly related to the concentration of the combustible gas components is output by the No. 3 pin, and then the tiny current signal is output to the LM324 operational amplifier through the No. 5 point, and the current signal is acquired, amplified and converted into a corresponding voltage signal and output from the No. 7 point. The effect of converting the concentration of the gas component into a voltage signal can be realized by arranging the circuit shown in fig. 4, so that the leakage of the battery can be detected in time through the voltage value change of the display.
The utility model discloses in, preferably adopt a plurality of gas detection probe 26, install a plurality of gas detection probe 26 respectively in the different positions of being surveyed battery 21 to the leakage condition of the different positions of battery 21 is surveyed in real-time detection. When the battery leakage occurs, the combustible gas generated by the leakage reaction is discharged at the leakage position, so that the combustible gas can be detected by the gas detection probe 26 arranged nearby, the reaction time of detection is shortened, and the leakage can be detected more quickly. Because the battery weeping mostly takes place in the encapsulation department of battery, it is preferred, the utility model discloses an install three gas detection probe 26 respectively in these three positions of positive ear 27, negative pole ear 28 and the side seal 29 of the battery of being surveyed to detect the emergence of the battery weeping condition more fast accurately.
When the battery has no leakage, the concentration of combustible gases such as methane, acetylene, carbon monoxide and the like in the fixed environment of the battery is very low, and when the battery has leakage, the concentration of gas components of the combustible gases generated by the electrolyte reaction is detected to be changed through a gas detection probe with a gas sensor. Combustible gas component concentration need detect in airtight environment, just can not make the testing result great error appear, preferred, the utility model discloses a battery weeping check out test set still includes airtight test incubator, is surveyed the battery and is placed and carry out the weeping test in airtight test incubator to improve the rate of accuracy of testing result.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in the process, method, article, or apparatus that comprises the element.
The above are merely examples of the present application and are not intended to limit the present application. Various modifications and changes may occur to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application should be included in the scope of the claims of the present application.
Claims (8)
1. A battery leakage detection apparatus, comprising:
the gas detection device is positioned on the battery to be detected and used for detecting the concentration of combustible gas components around the battery to be detected;
the control device is connected with the gas detection device and is used for converting the concentration of the combustible gas component detected by the gas detection device into a voltage value; and
and the display device is connected with the control device and is used for displaying the voltage value.
2. The battery leakage detection apparatus of claim 1 wherein said gas detection device is a gas detection probe with a gas sensor.
3. The battery leakage detection apparatus according to claim 1 or 2, wherein the gas detection device is a plurality of gas detection devices installed at different positions of the battery under test.
4. The battery leakage detection apparatus according to claim 3, wherein the plurality of gas detection devices are three gas detection devices, and the three gas detection devices are respectively mounted at positive and negative electrode tabs and side seal positions of the battery under test.
5. The battery leakage detection apparatus according to claim 1, further comprising a hermetic test oven in which the battery under test is placed.
6. The battery leakage detection apparatus according to claim 1, further comprising a fixing device mounted on the battery under test for fixing the battery under test.
7. The battery leakage detection apparatus of claim 6 wherein said fixture is a tooling fixture.
8. The battery leakage detection apparatus of claim 7, wherein the tooling fixture comprises:
the battery testing device comprises an upper clamping plate, a lower clamping plate, a bolt and a nut, wherein the battery to be tested is fixed between the upper clamping plate and the lower clamping plate, and the bolt and the nut are used for fixing the upper clamping plate and the lower clamping plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020505468.7U CN211784145U (en) | 2020-04-07 | 2020-04-07 | Battery leakage detection equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020505468.7U CN211784145U (en) | 2020-04-07 | 2020-04-07 | Battery leakage detection equipment |
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| CN211784145U true CN211784145U (en) | 2020-10-27 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112570311A (en) * | 2020-12-08 | 2021-03-30 | 珠海冠宇电池股份有限公司 | Battery detection device and method |
| CN113310647A (en) * | 2021-06-30 | 2021-08-27 | 中国第一汽车股份有限公司 | Method and device for detecting leakage of battery pack, electronic equipment and storage medium |
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2020
- 2020-04-07 CN CN202020505468.7U patent/CN211784145U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112570311A (en) * | 2020-12-08 | 2021-03-30 | 珠海冠宇电池股份有限公司 | Battery detection device and method |
| CN113310647A (en) * | 2021-06-30 | 2021-08-27 | 中国第一汽车股份有限公司 | Method and device for detecting leakage of battery pack, electronic equipment and storage medium |
| CN113310647B (en) * | 2021-06-30 | 2022-11-15 | 中国第一汽车股份有限公司 | Method and device for detecting leakage of battery pack, electronic equipment and storage medium |
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