CN206311273U - A kind of lithium ion battery leakage detection apparatus using general densimeter - Google Patents
A kind of lithium ion battery leakage detection apparatus using general densimeter Download PDFInfo
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- CN206311273U CN206311273U CN201621178337.2U CN201621178337U CN206311273U CN 206311273 U CN206311273 U CN 206311273U CN 201621178337 U CN201621178337 U CN 201621178337U CN 206311273 U CN206311273 U CN 206311273U
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- lithium ion
- ion battery
- densimeter
- vacuum chamber
- general
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Abstract
The utility model discloses a kind of lithium ion battery leakage detection apparatus using general densimeter, including：Vacuum chamber (1) for placing lithium ion battery；General densimeter (2) for detecting the lithium ion battery electrolyte leakage concentration, the general densimeter (2) valve (3) outside with the vacuum chamber (1) is arranged at and vavuum pump (4) are sequentially communicated；With the electric pneumatic valve (5) connected inside the vacuum chamber (1)；What is connected with the electric pneumatic valve (5) dries source of the gas (6)；And the source purge gas (7) connected with the vacuum chamber (1) inside；Dry gas are provided between the electric pneumatic valve (5) and the vacuum chamber (1) and import valve (9).The utility model provides a kind of lithium ion battery leak detection scheme of integration, and the leakiness of lithium ion battery is judged by the concentration for determining evaporation electrolysis liquid.
Description
Technical field
A kind of the utility model lithium ion battery detection technique, more particularly to lithium ion battery using general densimeter is examined
Leakage device.
Background technology
Lithium ion battery is made up of elements such as positive pole, negative pole, electrolyte, barrier films.At present, positive pole uses cobalt acid lithium, nickel
The transition metal oxides such as cobalt manganic acid lithium；Negative pole uses the material such as carbon or graphite and metal；Electrolyte uses non-aqueous electricity
Solution liquid；Barrier film is the porous membrane of the materials such as polypropylene.It is known that lithium ion battery is in charge and discharge process, positive and negative electrode material
Material can and electrolyte reaction, while producing gas, the pressure of gas reaches and will result in a certain degree battery case rupture and leakage and draw
Security incident is played, so leak detection test need to be carried out to the lithium ion battery for producing, whether is accorded with the sealing for detecting battery case
Close and require.
In order to whether there is leakage after detecting lithium ion battery encapsulation, general concentration is used the utility model proposes one kind
The lithium ion battery leakage detection apparatus of meter.
Utility model content
The utility model proposes a kind of lithium ion battery leakage detection apparatus using general densimeter, including：For placing
The vacuum chamber of lithium ion battery；General densimeter for detecting the lithium ion battery electrolyte leakage concentration, it is described general
Densimeter is sequentially communicated with the valve and vavuum pump that are arranged at outside the vacuum chamber；The electricity connected with the vacuum chamber is empty
Valve；Source of the gas is dried with the electric pneumatic valve is connected；And the source purge gas connected with the vacuum chamber；The electric pneumatic valve and institute
State and be provided between vacuum chamber dry gas and import valve.
The utility model proposes the lithium ion battery leakage detection apparatus using general densimeter in, outside the vacuum chamber
The vacuum meter being connected with inside it is further provided with, the vacuum meter is used to measure the atmospheric pressure value in the vacuum chamber.
The utility model proposes the lithium ion battery leakage detection apparatus using general densimeter in, the vacuum meter with
The electric pneumatic valve communication, the electric pneumatic valve adjusts gas transmission speed according to atmospheric pressure value.
The beneficial effects of the utility model are：The utility model provides a kind of lithium ion battery leak detection side of integration
Case, the leakiness of lithium ion battery is judged by the concentration for determining evaporation electrolysis liquid.
Brief description of the drawings
Fig. 1 is shown the structural representation that the utility model uses the lithium ion battery leakage detection apparatus of general densimeter.
Fig. 2 is the flow chart of the lithium ion battery leak detection process for using general densimeter.
Fig. 3 is the graph of a relation of pressure and each degree leak detection concentration in vacuum chamber during lithium battery is hunted leak.
Fig. 4 is the structural representation of the general densimeter that the utility model is used.
Specific embodiment
With reference to specific examples below and accompanying drawing, the utility model is described in further detail.Implement this practicality new
Process, condition, experimental technique of type etc., in addition to the following special content for referring to, are the universal knowledege of this area and known
General knowledge, the utility model is not particularly limited content.
As shown in figure 1, the utility model proposes a kind of lithium ion battery leakage detection apparatus using general densimeter, bag
Include：Vacuum chamber 1 for placing lithium ion battery；General densimeter 2 for detecting lithium ion battery electrolyte leakage concentration,
General densimeter 2 is sequentially communicated with the valve 3 and vavuum pump 4 that are arranged at outside vacuum chamber 1；It is empty with the electricity that the inside of vacuum chamber 1 connects
Valve 5；What is connected with electric pneumatic valve 5 dries source of the gas 6；And the source purge gas 7 connected with the inside of vacuum chamber 1；Electric pneumatic valve 5 and vacuum chamber 1
Between be provided with dry gas import valve 9.
The utility model proposes the general densimeter of use lithium ion battery leakage detection apparatus in, vacuum chamber 1 is outer further
The vacuum meter 8 being connected with inside it is provided with, vacuum meter 8 communicates with electric pneumatic valve 5.Vacuum meter 8 communicates with electric pneumatic valve 5, electric pneumatic valve 5
Gas transmission speed is adjusted according to atmospheric pressure value.
Fig. 4 is shown the structural representation of the general densimeter that the utility model is used.The two ends of general densimeter 2
It is respectively equipped with the source of transmitting 21 and by information source 22, transmits source 21 and by being provided with pipeline between information source 22, on the shell of general densimeter 2
Multiple through holes are provided with, through hole is externally provided with metal sintered filter 23, and through hole is connected with pipeline 24.The center of pipeline 24 be provided with to
The thermometer 25 of UNICOM and exhaust outlet 26.During work, exhaust outlet 26 is connected with external vacuum pump 4, is produced in pipeline 24 negative
Pressure, the gas in vacuum chamber 1 then enters in pipeline via metal sintered filter 23, and transmitting source 21 can sense with by information source 22
The concentration of gas electrolyte inside.
Fig. 2 is shown the leak detection of the lithium ion battery leakage detection apparatus that general densimeter is also used using the utility model
Journey, comprises the following steps：
Step one：Vacuum chamber 1 is closed after placing lithium ion battery, valve 3 is opened and dry gas is imported valve 9；
Step 2：In preset measuring time section, vavuum pump 4 is opened by the gas in the aspiration vacuum chamber 1 of general densimeter 2
Body, while gradually reducing air pressure in vacuum chamber 1 until setting；If the concentration of the electrolyte that gasifies is higher than threshold value, report is sent
Police's prompting stops detection, is persistently aspirated until preset measuring time terminates if less than threshold value；
Step 3：Treat that the air pressure in vacuum chamber 1 lands vertically to setting, when closing dry gas importing valve 9 and standing one section
Between；
Step 4：Using the concentration of gasification electrolyte in the detection vacuum chamber 1 of general densimeter 2, if concentration is higher than threshold value,
Sending alarm and stopping detection carrying out step 5, and step 5 is carried out after less than measurement to be done if threshold value；
Step 5：Source purge gas 7 and valve 3 are opened, recovering to atmospheric pressure unlatching vacuum chamber 1 after air pressure in vacuum chamber 1 takes
Go out lithium ion battery.
The utility model proposes the general densimeter of use lithium ion battery leak detection during, further include：Step
Six：Background values in detection vacuum chamber 1, background values is recovered to normal value, closes source purge gas 7 and valve 3.
Fig. 3 is shown the graph of a relation of pressure and each leak detection concentration in vacuum chamber during lithium battery is hunted leak, in Fig. 3
It is divided into two stages：Gross leak measuring phases and minute leakage measuring phases.Before detection gross leak measurement, by lithium ion
Battery is put into vacuum chamber 1, using sealing ring closed vacuum cavity 1, valve 3 is opened afterwards and dry gas import valve 9.In default survey
In the amount time period, vavuum pump 4 is opened by the gas in the aspiration vacuum chamber 1 of general densimeter 2, now gradually reduce vacuum chamber 1
Interior air pressure is until setting.If concentration of electrolyte is higher than threshold value after now general densimeter senses generation leakage vaporization,
Then send alarm and stop detection, it is known that the shell of lithium ion battery has the possibility of serious leak and medium leak, stop
Source purge gas 7 and valve 3 should be opened after detection, recovers to atmospheric pressure to open the taking-up lithium ion of vacuum chamber 1 after air pressure in vacuum chamber 1
Battery.If less than if threshold value persistently suction until preset measuring time terminates, it is known that lithium ion battery do not occur serious leak and
Medium leak.
If lithium ion battery occurs minute leakage, treat that the air pressure in vacuum chamber 1 lands vertically to setting, close dry gas
Import valve 9 and stand a period of time；Using the concentration of gasification electrolyte in the detection vacuum chamber 1 of general densimeter 2, if concentration is higher than
Threshold value, then send alarm and stop detection, if concentration is more than threshold value, the lithium ion battery is non-defective unit
Protection content of the present utility model is not limited to above example.In the spirit and model conceived without departing substantially from utility model
Under enclosing, those skilled in the art it is conceivable that change and advantage be all included in the utility model, and with appended power
Sharp claim is protection domain.
Claims (3)
1. a kind of lithium ion battery leakage detection apparatus using general densimeter, it is characterised in that including：
Vacuum chamber (1) for placing lithium ion battery；
General densimeter (2) for detecting the lithium ion battery electrolyte leakage concentration, the general densimeter (2) with set
It is placed in the outside valve (3) of the vacuum chamber (1) and vavuum pump (4) is sequentially communicated；
With the electric pneumatic valve (5) connected inside the vacuum chamber (1)；
What is connected with the electric pneumatic valve (5) dries source of the gas (6)；And
With the source purge gas (7) connected inside the vacuum chamber (1)；
Dry gas are provided between the electric pneumatic valve (5) and the vacuum chamber (1) and import valve (9).
2. the lithium ion battery leakage detection apparatus of general densimeter are used as claimed in claim 1, it is characterised in that the vacuum
The vacuum meter (8) being connected with inside it is further provided with outside chamber (1).
3. the lithium ion battery leakage detection apparatus of general densimeter are used as claimed in claim 2, it is characterised in that the vacuum
Meter (8) communicates with the electric pneumatic valve (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621178337.2U CN206311273U (en) | 2016-10-26 | 2016-10-26 | A kind of lithium ion battery leakage detection apparatus using general densimeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621178337.2U CN206311273U (en) | 2016-10-26 | 2016-10-26 | A kind of lithium ion battery leakage detection apparatus using general densimeter |
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| Publication Number | Publication Date |
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| CN206311273U true CN206311273U (en) | 2017-07-07 |
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| CN201621178337.2U Active CN206311273U (en) | 2016-10-26 | 2016-10-26 | A kind of lithium ion battery leakage detection apparatus using general densimeter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991029A (en) * | 2016-10-26 | 2018-05-04 | 广舜检测技术（上海）有限公司 | A kind of lithium ion battery leakage detection apparatus and its leak hunting method using general densimeter |
| CN108692888A (en) * | 2018-06-05 | 2018-10-23 | 广舜检测技术（上海）有限公司 | A kind of method for conducting leak test of battery liquid-filling mouth enclosuring structure |
| CN110007244A (en) * | 2018-01-03 | 2019-07-12 | 深圳前海久禾科技发展有限公司 | A kind of telephone testing machine and test method |
| CN111982425A (en) * | 2020-07-21 | 2020-11-24 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Lithium ion battery air tightness detection method and device |
-
2016
- 2016-10-26 CN CN201621178337.2U patent/CN206311273U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107991029A (en) * | 2016-10-26 | 2018-05-04 | 广舜检测技术（上海）有限公司 | A kind of lithium ion battery leakage detection apparatus and its leak hunting method using general densimeter |
| CN110007244A (en) * | 2018-01-03 | 2019-07-12 | 深圳前海久禾科技发展有限公司 | A kind of telephone testing machine and test method |
| CN108692888A (en) * | 2018-06-05 | 2018-10-23 | 广舜检测技术（上海）有限公司 | A kind of method for conducting leak test of battery liquid-filling mouth enclosuring structure |
| CN111982425A (en) * | 2020-07-21 | 2020-11-24 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | Lithium ion battery air tightness detection method and device |
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