CN206710042U - A kind of lithium ion battery helium leak check instrument - Google Patents
A kind of lithium ion battery helium leak check instrument Download PDFInfo
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- CN206710042U CN206710042U CN201720494061.7U CN201720494061U CN206710042U CN 206710042 U CN206710042 U CN 206710042U CN 201720494061 U CN201720494061 U CN 201720494061U CN 206710042 U CN206710042 U CN 206710042U
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- conduit
- lithium ion
- ion battery
- seal box
- leak detection
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Abstract
The utility model discloses a kind of lithium ion battery helium leak check instrument, including the seal box, big leakage pressure differential detection unit and medium and small leak detection unit of more than one lithium ion battery can be accommodated；Big leakage pressure differential detection unit includes leak detection end, the first conduit, end of probe and benchmark cavity.End of probe is connected by the first conduit with leak detection end, and leak detection end connects with benchmark cavity, and film is provided with end of hunting leak；End of probe is stretched into inside seal box；Medium and small leak detection unit includes vavuum pump, the second conduit, concentration detector；The inside of one section of communication seals case of the second conduit, vavuum pump and concentration detector are sequentially connected outside in seal box.The utility model can detect lithium ion battery under vacuum conditions and whether there is micro gap, detect big leakage situation using pressure differential method, vavuum pump is connected to detect medium and small leakage situation with concentration monitor.
Description
Technical field
It the utility model is related to lithium ion battery helium inspection technology, more particularly to a kind of lithium ion battery helium leak check instrument.
Background technology
But in order to detect the sealing of weld, it is necessary to fill helium into lithium battery in advance, helium belongs to extremely living
The gas molecule of jump, easily from it is small it is thin from loss, determined by the concentrations of helium detected around lithium battery outside lithium ion battery
Shell whether there is crack or perforate.Current leak detection means are that lithium battery finished product is positioned in a seal box, the seal box
Provided with a vacuum pumping opening and a detection mouth, first pass through vacuum pumping opening and pump out gas inside seal box, make in seal box
Vacuum environment is formed, then opens detection mouth using the helium for whether having loss in concentrations of helium instrument detection seal box, it is final to determine
Whether casing of lithium ion battery is complete.
But the amount of helium injected during making lithium ion battery into battery is extremely limited, if casing of lithium ion battery is present
Wider gap, then micro helium with speed loss as quick as thought in seal box, when seal box is evacuated into vacuum with internal empty
Gas is pumped out to outside seal box, and helium can be detected by causing to be not present in seal box and lithium ion battery.In the case of this kind of, if sharp
Helium can not be detected with existing means, then by mistake using the substandard products lithium ion battery as qualified products and by quality inspection, in reality
Using, transport, storage when easily cause danger.
In order to overcome above-mentioned deficiency, the utility model proposes a kind of lithium ion battery helium leak check instrument.
Utility model content
The utility model proposes a kind of lithium ion battery helium leak check instrument, including more than one lithium-ion electric can be accommodated
The seal box in pond, big leakage pressure differential detection unit and medium and small leak detection unit；The big leakage pressure differential detection unit includes leak detection end, the
One conduit, end of probe and benchmark cavity, the end of probe are connected by the first conduit with the leak detection end, the leak detection end and institute
The connection of benchmark cavity is stated, film is provided with the leak detection end；The end of probe is stretched into inside the seal box；The medium and small missing inspection
Surveying unit includes vavuum pump, the second conduit and concentration detector；The inside of one section of connection seal box of second conduit,
The vavuum pump and the concentration detector are sequentially connected in the seal box outside.
The utility model proposes the lithium ion battery helium leak check instrument in, first conduit and/or described
Barometer is provided with two conduits.
The utility model proposes the lithium ion battery helium leak check instrument in, spatial volume in the end of probe with
The reference cavity body phase is same.
The utility model proposes the lithium ion battery helium leak check instrument in, the seal box is further provided with point
Discharge orifice, the tap hole connect the 3rd vavuum pump by the 3rd conduit.
The utility model proposes the lithium ion battery helium leak check instrument in, the 3rd conduit and described first is led
Gas flowmeter is further provided with pipe.
The beneficial effects of the utility model are：Whether the utility model can detect lithium ion battery under vacuum conditions
Micro gap be present, detect big leakage situation using pressure differential method, vavuum pump and concentration monitor are contacted to detect medium and small leakage situation.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model lithium ion battery helium leak check instrument.
Embodiment
With reference to specific examples below and accompanying drawing, the utility model is described in further detail.It is new to implement this practicality
The process of type, condition, experimental method etc., it is the universal knowledege of this area and known in addition to the following content specially referred to
Content is not particularly limited in general knowledge, the utility model.
The utility model proposes a kind of lithium ion battery helium leak check instrument, including more than one lithium ion battery can be accommodated
Seal box 1, big leakage pressure differential detection unit 2 and medium and small leak detection unit 3.Big leakage pressure differential detection unit 2 includes leak detection end 21, the
One conduit 22, end of probe 23 and benchmark cavity 24, end of probe 23 by the first conduit 22 with leak detection end 21 connect, leak detection end 21 with
Benchmark cavity 24 connects, and leak detection is provided with film in end 21.End of probe 23 is stretched into inside seal box 1.Medium and small leak detection unit 3 includes
Vavuum pump 31, the second conduit 32 and concentration detector 33.The inside of one section of communication seals case 1 of the second conduit 32, in seal box 1
It is sequentially connected vavuum pump 31 and concentration detector 33 outside.
Using including big leak detection stage and medium and small leak detection stage during the utility model helium leak check instrument.Below for
Two stages are illustrated.
The big leak detection stage
A. lithium ion battery is placed on seal box 1, test side 23 stretch into seal box 1 and with it is to be checked on lithium ion battery
The soldering opening of survey hermetically connects.
B. leak detection end 21 is opened, the film both sides in end 21 of hunting leak connect with end of probe 23 and benchmark cavity 24 respectively.Visit
It is identical with the spatial volume in benchmark cavity 24, pressure to survey end 23.If the pressure of film both sides is different, film can be to low-pressure side
Deformation.
C. observe or read the change of film in leak detection end 21, if film deforms upon to end of probe 23, lithium-ion electric
Pond shell is present compared with big gap (that is, big leakage being present).
D. by after the broken empty recovery of end of probe 23 to atmospheric pressure, end of probe 23 is removed from casing of lithium ion battery.
The medium and small leak detection stage
A. opening vavuum pump 31 extracts the gas inside seal box 1 by the second conduit 32.If casing of lithium ion battery
On minute crack be present, then the helium of loss can be included in gas.
B. the concentrations of helium that gas is entered in the detection gas of concentration detector 33 by the second conduit 32.If detect helium
Gas, then judge that casing of lithium ion battery has minute crack (medium and small leakage).
Seal box 1 in the utility model can accommodate a lithium ion battery, can also accommodate multiple lithium ion batteries.
The volume of seal box 1 can adjust according to the actual requirements.If the volume of seal box 1 is excessive, it is difficult to using only vavuum pump 31 in the short time
It is interior to extract gas all in seal box 1 out, then tap hole 11 is preferably further provided with seal box 1, tap hole 11 is logical
Cross the 3rd conduit 12 and connect the 3rd vavuum pump 13.Gas flowmeter is further provided with 3rd conduit 12 and the first conduit 22.
Contrasted by the flow velocity of gas flowmeter, the gas volume ratio that the first conduit 22 and the 3rd conduit 12 are actually extracted out is calculated, to dense
The concentrations of helium that degree monitor 33 is detected carries out equal proportion conversion, you can obtains the concentrations of helium value in seal box 1.
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 (5)
1. a kind of lithium ion battery helium leak check instrument, it is characterised in that including the close of more than one lithium ion battery can be accommodated
Joint sealing (1), big leakage pressure differential detection unit (2) and medium and small leak detection unit (3)；
The big leakage pressure differential detection unit (2) includes leak detection end (21), the first conduit (22), end of probe (23) and benchmark cavity
(24), the end of probe (23) by the first conduit (22) with it is described leak detection end (21) connect, it is described hunt leak end (21) with it is described
Benchmark cavity (24) is connected, and film is provided with leak detection end (21)；The end of probe (23) is stretched into the seal box (1)
Portion；
The medium and small leak detection unit (3) includes vavuum pump (31), the second conduit (32) and concentration detector (33)；Described second
The inside of one section of connection seal box (1) of conduit (32), the vavuum pump (31) is sequentially connected outside in the seal box (1)
With the concentration detector (33).
2. lithium ion battery helium leak check instrument as claimed in claim 1, it is characterised in that first conduit (22) and/
Or it is provided with barometer on second conduit (32).
3. lithium ion battery helium leak check instrument as claimed in claim 1, it is characterised in that the sky in the end of probe (23)
Between volume it is identical with the benchmark cavity (24).
4. lithium ion battery helium leak check instrument as claimed in claim 1, it is characterised in that the seal box (1) is further
Tap hole (11) is provided with, the tap hole (11) connects the 3rd vavuum pump (13) by the 3rd conduit (12).
5. lithium ion battery helium leak check instrument as claimed in claim 4, it is characterised in that the 3rd conduit (12) and institute
State and be further provided with gas flowmeter on the first conduit (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720494061.7U CN206710042U (en) | 2017-05-05 | 2017-05-05 | A kind of lithium ion battery helium leak check instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720494061.7U CN206710042U (en) | 2017-05-05 | 2017-05-05 | A kind of lithium ion battery helium leak check instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206710042U true CN206710042U (en) | 2017-12-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720494061.7U Active CN206710042U (en) | 2017-05-05 | 2017-05-05 | A kind of lithium ion battery helium leak check instrument |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489689A (en) * | 2018-03-20 | 2018-09-04 | 深圳市星汉激光科技有限公司 | A kind of container leak hunting method and container leakage detection system |
| 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 |
| CN111929012A (en) * | 2020-07-03 | 2020-11-13 | 安徽皖仪科技股份有限公司 | Soft package air tightness detection system and method |
| CN112763164A (en) * | 2021-02-03 | 2021-05-07 | 宁波格劳博智能工业有限公司 | Airtight check out test set of power battery module |
| TWI749581B (en) * | 2020-06-08 | 2021-12-11 | 群翌能源股份有限公司 | Leak test system for thin film unit of battery |
-
2017
- 2017-05-05 CN CN201720494061.7U patent/CN206710042U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108489689A (en) * | 2018-03-20 | 2018-09-04 | 深圳市星汉激光科技有限公司 | A kind of container leak hunting method and container leakage detection system |
| 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 |
| TWI749581B (en) * | 2020-06-08 | 2021-12-11 | 群翌能源股份有限公司 | Leak test system for thin film unit of battery |
| CN111929012A (en) * | 2020-07-03 | 2020-11-13 | 安徽皖仪科技股份有限公司 | Soft package air tightness detection system and method |
| CN112763164A (en) * | 2021-02-03 | 2021-05-07 | 宁波格劳博智能工业有限公司 | Airtight check out test set of power battery module |
| CN112763164B (en) * | 2021-02-03 | 2021-11-19 | 宁波格劳博智能工业有限公司 | Airtight check out test set of power battery module |
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