CN111175447A - Lithium battery humidity measuring method and device - Google Patents
Lithium battery humidity measuring method and device Download PDFInfo
- Publication number
- CN111175447A CN111175447A CN201911419653.2A CN201911419653A CN111175447A CN 111175447 A CN111175447 A CN 111175447A CN 201911419653 A CN201911419653 A CN 201911419653A CN 111175447 A CN111175447 A CN 111175447A
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- China
- Prior art keywords
- humidity
- lithium battery
- transparent
- sealing
- tank cover
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/385—Arrangements for measuring battery or accumulator variables
Abstract
The invention discloses a method and a device for measuring the humidity of a lithium battery. The device includes: sealing the tank; the pipeline is used for connecting a connecting nozzle of the lithium battery and the sealing tank; and the humidity tester is positioned in the sealing tank and used for testing humidity. According to the invention, the effect of measuring the humidity of the lithium battery with the exhaust valve is achieved.
Description
Technical Field
The invention relates to the field of batteries, in particular to a method and a device for measuring the humidity of a lithium battery.
Background
The lithium battery with the exhaust valve is not clear whether water molecules enter the battery or not in the battery formation and exhaust process, the battery formation internal humidity with the exhaust valve is known to be beneficial to improving the performance of the battery, and the battery formation internal humidity with the exhaust valve is not tested in the related art, so that a method for testing the battery formation internal humidity with the exhaust valve is needed.
Aiming at the problem that the humidity in the lithium battery with the exhaust valve in the related technology can not be known, an effective solution is not provided at present.
Disclosure of Invention
The invention mainly aims to provide a method and a device for measuring the humidity of a lithium battery, which are used for solving the problem that the internal humidity of the lithium battery with an exhaust valve cannot be known.
In order to achieve the above object, according to another aspect of the present invention, there is also provided a lithium battery humidity measuring apparatus, including: sealing the tank; the pipeline is used for connecting the connecting nozzle of the lithium battery and the sealing tank; and the humidity tester is positioned in the sealing tank and used for testing humidity.
Further, the seal pot is a transparent seal pot.
Further, the hermetic vessel includes: a transparent closed tank cover; sealing the tank body; the transparent closed tank cover connecting nozzle is used for being connected with the pipeline.
Further, the seal pot further comprises: and the nut is arranged on the outer side of the transparent sealing tank cover and used for fixing the connecting nozzle of the transparent sealing tank cover and the transparent sealing tank cover.
Further, the seal pot further comprises: and the sealing gasket is positioned on the inner side of the transparent closed tank cover and is coaxially arranged with the nut and the connecting nozzle of the transparent closed tank cover.
Further, the seal pot is a cylindrical seal pot.
Further, the nut, the transparent closed tank cover connecting nozzle and the sealing gasket are positioned at the circle center of the cross section of the sealed tank.
In order to achieve the above object, according to one aspect of the present invention, there is provided a lithium battery humidity measuring method including: the lithium battery humidity measuring device measures the humidity of the lithium battery, and before measurement, a pipeline and a sealing tank are placed in a high-temperature vacuum box, and after high-temperature and vacuum treatment, the lithium battery is connected to measure the humidity.
Further, judging whether the value of the humidity tester is stable; after the lithium battery is stabilized, connecting a pipeline with a connecting nozzle of the lithium battery and the sealing tank for measurement reading; outputting the measurement reading.
Further, before the reading is output, judging whether the reading is in a theoretical value range of the humidity of the lithium battery; if so, the reading is output.
The invention passes the sealed pot; the pipeline is used for connecting a connecting nozzle of the lithium battery and the sealing tank; the humidity tester is located in the sealing tank and used for testing humidity, the problem that the humidity inside the lithium battery with the exhaust valve cannot be known is solved, and then the effect of measuring the humidity inside the lithium battery is achieved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a diagram of the overall structure of a method for measuring the humidity inside a lithium battery with an exhaust valve;
FIG. 2 is a schematic diagram of an electrochemically rechargeable battery with an exhaust valve and a sealed container; and
FIG. 3 is a view showing the structure of the closed vessel and the connecting member.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiment of the invention provides a lithium battery humidity measuring device.
The device includes: sealing the tank; the pipeline is used for connecting a connecting nozzle of the lithium battery and the sealing tank; and the humidity tester is positioned in the sealing tank and used for testing humidity.
Optionally, the sealed canister is a transparent sealed canister.
Optionally, the sealed can comprises: a transparent closed tank cover; sealing the tank body; the transparent closed tank cover connecting nozzle is used for being connected with a pipeline.
Optionally, the sealed canister further comprises: and the nut is arranged on the outer side of the transparent sealing tank cover and used for fixing the transparent sealing tank cover connecting nozzle and the transparent sealing tank cover.
Optionally, the sealed canister further comprises: and the sealing gasket is positioned on the inner side of the transparent closed tank cover and is coaxially arranged with the nut and the connecting nozzle of the transparent closed tank cover.
Optionally, the seal can is a cylindrical seal can.
Optionally, the nut, the transparent closed tank cover connecting nozzle and the sealing gasket are positioned at the circle center of the cross section of the sealed tank.
This example also provides a preferred embodiment, and the following describes the aspects of the present invention with reference to the preferred embodiment.
The embodiment mainly solves the following problems: and measuring the humidity value and the change of water molecules in the lithium battery with the exhaust valve during the cyclic charge and discharge of the lithium battery.
Has the advantages that: 1. the battery internal humidity value can be determined by the data value. 2. The improvement of battery fabrication and the improvement of battery performance provide referenceable data support.
A device for measuring the internal humidity of a lithium ion battery with an exhaust valve comprises the battery with the exhaust valve; a gas conduit connecting the battery and a channel external to the battery; sealing the transparent container; a humidity sensor.
FIG. 1 is a general structural diagram of a method for measuring humidity inside a lithium ion battery with an exhaust valve, wherein the lithium ion battery is an electrochemically rechargeable battery, the battery is welded with an exhaust valve which can exhaust air from the inside of the battery to the outside of the battery, and FIG. 2 is a structural diagram of the electrochemically rechargeable battery with the exhaust valve and a closed container; an aluminum connecting piece is welded at the position of the battery liquid injection hole, and the connecting piece is mainly used for connecting a gas pipeline of an external passage of the battery, and the pipeline is connected with the battery and the closed container and is a passage. Fig. 3 is a structural diagram of a sealed container and a connecting part, wherein the sealed container is arranged outside a battery, the sealed container is communicated with a gas pipeline, the sealed container can bear the pressure of the gas which is larger than the exhaust pressure of an exhaust valve, the sealed container is transparent and can be provided with a high-precision humidity testing instrument, a connector and a sealing gasket are arranged on a cap of the sealed container to ensure the sealing of the sealed container, and the high-precision humidity testing instrument can be used for measuring the humidity value of the sealed container.
The components represented by the reference numerals in the figure are 1, a battery, 2, a pipeline, 3, a transparent sealing tank, 4, a high-precision humidity tester, 11, an exhaust valve, 12, a battery connecting nozzle, 31, a nut, 32, a transparent sealing tank cover, 33, a sealing gasket, 34, a transparent sealing tank cover connecting nozzle, 35 and a transparent sealing tank body.
The embodiment also provides a lithium battery humidity measuring method, the lithium battery humidity measuring device is used for measuring the humidity of the lithium battery, before measurement, the pipeline and the sealing tank are placed in the high-temperature vacuum box, and after high-temperature and vacuum treatment, the lithium battery is connected for measuring the humidity.
Optionally, judging whether the value of the humidity tester is stable; after the lithium battery is stabilized, connecting a pipeline with a connecting nozzle of the lithium battery and a sealing tank to perform measurement reading; and outputting the measurement reading.
Optionally, before outputting the reading, judging whether the reading is within a humidity theoretical value range of the lithium battery; if so, a reading is output.
The specific steps can be as follows:
1. before capacity grading, an exhaust valve structural part (11) and a connecting nozzle (12) are welded on a battery cover plate, and a nut (31), a sealing gasket (33) and a transparent closed tank cover connecting nozzle (34) are sequentially connected and fastened with a transparent closed tank cover.
2. The pipeline (2) and the transparent sealing tank (3) are placed in a high-temperature vacuum-pumping box, after high-temperature and vacuum treatment, the pipeline is sealed, and the connecting nozzle of the sealing tank cover is sealed.
3. The battery (1), the sealed pipeline (2), the sealed transparent sealing tank (3) and the high-precision humidity tester (4) are placed in the battery liquid injection room, the liquid injection room is in an open state for dehumidification, and the humidity is kept at a fixed value and is stable and unchanged. After deblocking sealed pipeline, transparent seal pot respectively placed a period, whether observe high accuracy humidity tester (4) and be in the stable value scope, when humidity tester was in the stable value, connect battery connector (12) to pipeline one end, on transparent sealed cover connector (34) was connected to another end of pipeline. And (3) fastening and sealing the transparent sealing can cover (32) and the transparent sealing can body (35). Respectively connecting the battery (1), the pipeline (2), the transparent sealing tank (3) and the high-precision humidity tester (4) together.
4. Carrying out a normal-temperature circulating charge-discharge experiment on the connected battery (1) to observe whether the numerical value change value of the high-precision hygronom is stable within the tolerance range of the hygronom; if not, continuing to form the product; if yes, recording the numerical range of the lithium battery, and obtaining the internal humidity value range of the lithium battery with the exhaust valve.
It should also 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 (10)
1. The utility model provides a lithium cell humidity measurement device which characterized in that is applied to the lithium cell of taking the exhaust valve, the device includes:
sealing the tank;
the pipeline is used for connecting the connecting nozzle of the lithium battery and the sealing tank;
and the humidity tester is positioned in the sealing tank and used for testing humidity.
2. The apparatus of claim 1, wherein the sealed canister is a transparent sealed canister.
3. The apparatus of claim 1, wherein the seal pot comprises:
a transparent closed tank cover;
a transparent closed tank body;
the transparent closed tank cover connecting nozzle is used for being connected with the pipeline.
4. The apparatus of claim 3, wherein the seal pot further comprises:
and the nut is arranged on the outer side of the transparent sealing tank cover and used for fixing the connecting nozzle of the transparent sealing tank cover and the transparent sealing tank cover.
5. The apparatus of claim 4, wherein the seal pot further comprises:
and the sealing gasket is positioned on the inner side of the transparent closed tank cover and is coaxially arranged with the nut and the connecting nozzle of the transparent closed tank cover.
6. The apparatus of claim 5, wherein the sealed canister is a cylindrical sealed canister.
7. The apparatus as claimed in claim 6, wherein the nut, the transparent closed can lid connection mouth and the sealing gasket are located at the center of the cross section of the sealed can.
8. A lithium battery humidity measuring method is characterized in that the lithium battery humidity is measured through the lithium battery humidity measuring device of any one of claims 1 to 7, before measurement, a pipeline and a sealing tank are placed in a high-temperature vacuum box, and after high-temperature and vacuum treatment, the lithium battery is connected to measure the humidity.
9. The method of claim 8,
judging whether the value of the humidity tester is stable or not;
after the lithium battery is stabilized, connecting a pipeline with a connecting nozzle of the lithium battery and the sealing tank for measurement reading;
outputting the measurement reading.
10. The method of claim 9,
before outputting the reading, judging whether the reading is in a theoretical value range of the humidity of the lithium battery;
if so, the reading is output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911419653.2A CN111175447A (en) | 2019-12-31 | 2019-12-31 | Lithium battery humidity measuring method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911419653.2A CN111175447A (en) | 2019-12-31 | 2019-12-31 | Lithium battery humidity measuring method and device |
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| Publication Number | Publication Date |
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| CN111175447A true CN111175447A (en) | 2020-05-19 |
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| CN201911419653.2A Pending CN111175447A (en) | 2019-12-31 | 2019-12-31 | Lithium battery humidity measuring method and device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111781523A (en) * | 2020-09-07 | 2020-10-16 | 爱德曼氢能源装备有限公司 | Fuel cell bipolar plate internal resistance detection device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202614477U (en) * | 2012-06-20 | 2012-12-19 | 东莞新能源电子科技有限公司 | Device for detecting lithium ion battery leakage |
| CN103529079A (en) * | 2013-09-26 | 2014-01-22 | 奇瑞汽车股份有限公司 | Moisture test system and test method thereof |
| CN104330439A (en) * | 2014-08-12 | 2015-02-04 | 中航锂电（洛阳）有限公司 | Device and method for detecting moisture content of lithium battery pole piece |
| CN208505878U (en) * | 2018-07-18 | 2019-02-15 | 深能合和电力（河源）有限公司 | A kind of compressed air line humidity measuring instrument |
-
2019
- 2019-12-31 CN CN201911419653.2A patent/CN111175447A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202614477U (en) * | 2012-06-20 | 2012-12-19 | 东莞新能源电子科技有限公司 | Device for detecting lithium ion battery leakage |
| CN103529079A (en) * | 2013-09-26 | 2014-01-22 | 奇瑞汽车股份有限公司 | Moisture test system and test method thereof |
| CN104330439A (en) * | 2014-08-12 | 2015-02-04 | 中航锂电（洛阳）有限公司 | Device and method for detecting moisture content of lithium battery pole piece |
| CN208505878U (en) * | 2018-07-18 | 2019-02-15 | 深能合和电力（河源）有限公司 | A kind of compressed air line humidity measuring instrument |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111781523A (en) * | 2020-09-07 | 2020-10-16 | 爱德曼氢能源装备有限公司 | Fuel cell bipolar plate internal resistance detection device |
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Application publication date: 20200519 |