CN102226731A - Method and device applicable to nickel-metal hydride batteries and used for selecting batteries with electrolyte leakage - Google Patents
Method and device applicable to nickel-metal hydride batteries and used for selecting batteries with electrolyte leakage Download PDFInfo
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- CN102226731A CN102226731A CN 201010615690 CN201010615690A CN102226731A CN 102226731 A CN102226731 A CN 102226731A CN 201010615690 CN201010615690 CN 201010615690 CN 201010615690 A CN201010615690 A CN 201010615690A CN 102226731 A CN102226731 A CN 102226731A
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Abstract
The invention provides a method and a supporting device applicable to nickel-metal hydride batteries and used for selecting batteries with electrolyte leakage, wherein the method comprises the following steps: charging a battery to be selected till the state-of-charge (SOC) value of the battery reaches 40-100%; putting the battery to be selected in a detection device; detecting the hydrogen concentration of an enclosed space; and if the detected hydrogen concentration of the battery is higher than a preset standard hydrogen concentration, judging the battery to be a battery with electrolyte leakage. By using the method and device provided by the invention, batteries with electrolyte leakage can be detected in a quick effective and environmentally-friendly way.
Description
Technical field
The present invention relates to the method and the employed device of quality testing in the battery production, particularly be suitable for method and the device of Ni-MH battery about selecting the leakage battery.
Background technology
Ni-MH battery requires sealing fully, otherwise can cause the leakage of electrolyte inside.In actual production process, owing to sealing bad or, causing battery to be scrapped because electrode lead-out part position poor sealing can cause leakage.
Traditional method of picking out leakage cell generally is that battery is left standstill a period of time, smears at the position that may leak with phenolphthalein then, and whether the principle of utilizing phenolphthalein chance alkali to redden is observed electrolyte inside leakage.The shortcoming one of this method is consuming time longer, and battery drain is slight more, and the time that need leave standstill is just long more; The 2nd, troublesome poeration need seal and the electrode lead-out part position is tested all; The 3rd, easy omission is because some electrolytic solution leakage is few and be arranged in and seal or the slit of electrode lead-out part position, if do not touch will omission for phenolphthalein.
Summary of the invention
The present invention aims to provide a kind of quick, simple to operate, the method for selecting the leakage battery that is suitable for Ni-MH battery that loss is low and the device that matches.
Implementation of the present invention is as follows:
Be suitable for the method for selecting the electrolyte leakage battery of Ni-MH battery, with battery charge to be selected to the state-of-charge of battery is after the SOC value is 40～100%, be positioned in the confined space, detect the density of hydrogen in the confined space, the battery that detected density of hydrogen is higher than the established standards density of hydrogen is judged to be leakage cell.
Generally speaking, the density of hydrogen standard setting is: under identical detection time, not leakage cell of the same race (containing enclosure material and thickness etc.) density of hydrogen 120%, but be not less than 30ppm, promptly the battery in this critical field is identified as qualified battery, be higher than density of hydrogen 120% then for leakage cell.
The device of selecting the electrolyte leakage battery that is suitable for Ni-MH battery that matches with said method comprises covering the testing cassete of the placement battery that has loam cake and have aperture that the gas sensing sensor on the hydrogen detector stretches in the testing cassete from above-mentioned aperture.
When detecting, better for the leakproofness that makes testing cassete, detected value is more accurate, docks part at loam cake with box body and is placed with sealing strip.
The present invention is ingenious and utilized battery can produce the inherent characteristics of hydrogen fully in charge and discharge process, if there is leakage point in battery, hydrogen can be very fast from these local effusions, and the amount of effusion will be more much bigger than the amount that normal battery is overflowed from the housing position.Utilize the hydrogen tester to detect the concentration of effusion hydrogen, just can judge whether leakage of battery.The present invention does not need battery is left standstill, so the test duration is short; Do not need to use chemical agent, measure convenient, environmental protection; The reliability height, the ratio of omission is little.
Description of drawings
Fig. 1: embodiment 1 detects the device synoptic diagram of leakage battery
Embodiment
Embodiment 1
Be suitable for the device of selecting the electrolyte leakage battery of Ni-MH battery, its structure is seen Fig. 1, a testing cassete 2 that has the placement battery of loam cake 1, and the top of loam cake 1 has aperture 3, and the gas sensing sensor 4 on the hydrogen detector stretches in the testing cassete 2 from aperture 3.When detecting, better for the leakproofness that makes testing cassete, detected value is more accurate, docks part at loam cake 1 with box body 2 and is placed with sealing strip 5, uses screw 6 fixed cover 1 then.
Embodiment 2
Battery to be selected is that nominal capacity is that 6.5Ah, nominal voltage are the plastic cement shell Ni-MH battery of 7.2V, with above-mentioned battery charge to be selected to the state-of-charge of battery is that the SOC value is 100%, be positioned in the pick-up unit of embodiment 1, detect the density of hydrogen in the confined space, when Measuring Time is 2 minutes, the battery that detected density of hydrogen is higher than the established standards density of hydrogen is judged to be leakage cell, and for this kind battery, the standard setting of density of hydrogen is 300ppm.Promptly as detect the battery that density of hydrogen is higher than 300ppm and be judged to be leakage cell.
Battery to be selected is that nominal capacity is that 6.5Ah, nominal voltage are the plastic cement shell Ni-MH battery of 3.6V, with above-mentioned battery charge to be selected to the state-of-charge of battery is that the SOC value is 70%, be positioned in the pick-up unit of embodiment 1, detect the density of hydrogen in the confined space, when Measuring Time is 10 minutes, the battery that detected density of hydrogen is higher than the established standards density of hydrogen is judged to be leakage cell, and for this kind battery, the standard setting of density of hydrogen is 150ppm.Promptly as detect the battery that density of hydrogen is higher than 150ppm and be judged to be leakage cell.
Battery to be selected is that nominal capacity is that 6.5Ah, nominal voltage are the box hat Ni-MH battery of 7.2V, with above-mentioned battery charge to be selected to the state-of-charge of battery is that the SOC value is 100%, be positioned in the pick-up unit of embodiment 1, detect the density of hydrogen in the confined space, when Measuring Time is 5 minutes, the battery that detected density of hydrogen is higher than the established standards density of hydrogen is judged to be leakage cell, and for this kind battery, the standard setting of density of hydrogen is 30ppm.Promptly as detect the battery that density of hydrogen is higher than 30ppm and be judged to be leakage cell.
Claims (3)
1. method of selecting the electrolyte leakage battery that is suitable for Ni-MH battery, it is characterized in that: after battery charge to be selected to the state-of-charge of battery is 40～100%, be positioned in the confined space, detect the density of hydrogen in the confined space then, the battery that detected density of hydrogen is higher than the established standards density of hydrogen is judged to be leakage cell; The density of hydrogen standard setting is: of the same race under the same terms do not leak Ni-MH battery density of hydrogen 120%, but standard value is not less than 30ppm.
2. a device of selecting the electrolyte leakage battery that is suitable for Ni-MH battery is characterized in that: comprise the testing cassete of the placement battery that has loam cake, cover and have aperture that the gas sensing sensor on the hydrogen detector stretches in the testing cassete from above-mentioned aperture.
3. the device of selecting the electrolyte leakage battery that is suitable for Ni-MH battery as claimed in claim 2 is characterized in that: when detecting, dock part at loam cake with box body and be placed with sealing strip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010615690 CN102226731A (en) | 2010-12-30 | 2010-12-30 | Method and device applicable to nickel-metal hydride batteries and used for selecting batteries with electrolyte leakage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010615690 CN102226731A (en) | 2010-12-30 | 2010-12-30 | Method and device applicable to nickel-metal hydride batteries and used for selecting batteries with electrolyte leakage |
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| Publication Number | Publication Date |
|---|---|
| CN102226731A true CN102226731A (en) | 2011-10-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010615690 Pending CN102226731A (en) | 2010-12-30 | 2010-12-30 | Method and device applicable to nickel-metal hydride batteries and used for selecting batteries with electrolyte leakage |
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| CN (1) | CN102226731A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102874128A (en) * | 2012-10-23 | 2013-01-16 | 新乡北方车辆仪表有限公司 | Battery management system with electrolyte leakage detection function |
| CN103123289A (en) * | 2011-11-17 | 2013-05-29 | 三星Sdi株式会社 | Leakage test device used for bag of rechargeable battery |
| CN113670540A (en) * | 2021-08-25 | 2021-11-19 | 上海普法芬电子科技有限公司 | Detection method for detecting electrolyte leakage during battery offline |
| CN113711073A (en) * | 2020-03-17 | 2021-11-26 | 株式会社Lg新能源 | Apparatus and method for predicting abnormal condition of battery and battery management system providing the same |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5606114A (en) * | 1995-12-18 | 1997-02-25 | General Motors Corporation | Battery leak testing apparatus |
| US20010016278A1 (en) * | 2000-02-22 | 2001-08-23 | Matsushita Electric Industrial Co.,Ltd. | Battery sealing inspection method |
| CN101095258A (en) * | 2004-12-28 | 2007-12-26 | 松下电器产业株式会社 | Method for inspecting liquid leakage of tubular battery |
-
2010
- 2010-12-30 CN CN 201010615690 patent/CN102226731A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5606114A (en) * | 1995-12-18 | 1997-02-25 | General Motors Corporation | Battery leak testing apparatus |
| US20010016278A1 (en) * | 2000-02-22 | 2001-08-23 | Matsushita Electric Industrial Co.,Ltd. | Battery sealing inspection method |
| CN101095258A (en) * | 2004-12-28 | 2007-12-26 | 松下电器产业株式会社 | Method for inspecting liquid leakage of tubular battery |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103123289A (en) * | 2011-11-17 | 2013-05-29 | 三星Sdi株式会社 | Leakage test device used for bag of rechargeable battery |
| CN102874128A (en) * | 2012-10-23 | 2013-01-16 | 新乡北方车辆仪表有限公司 | Battery management system with electrolyte leakage detection function |
| CN113711073A (en) * | 2020-03-17 | 2021-11-26 | 株式会社Lg新能源 | Apparatus and method for predicting abnormal condition of battery and battery management system providing the same |
| CN113711073B (en) * | 2020-03-17 | 2024-05-14 | 株式会社Lg新能源 | Apparatus and method for predicting abnormal condition of battery and battery management system providing the same |
| CN113670540A (en) * | 2021-08-25 | 2021-11-19 | 上海普法芬电子科技有限公司 | Detection method for detecting electrolyte leakage during battery offline |
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Application publication date: 20111026 |