CN109883880A - Battery pole piece produces gas in situ detection device - Google Patents
Battery pole piece produces gas in situ detection device Download PDFInfo
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- CN109883880A CN109883880A CN201910105101.8A CN201910105101A CN109883880A CN 109883880 A CN109883880 A CN 109883880A CN 201910105101 A CN201910105101 A CN 201910105101A CN 109883880 A CN109883880 A CN 109883880A
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Abstract
The present invention provides a kind of battery pole pieces to produce gas in situ detection device comprising: battery clamp comprising upper fixture and lower fixture, and the sealed chamber for fixing battery core is limited by upper fixture and lower fixture, upper fixture has air-tight interfaces；Battery core includes at least pole piece to be measured；And gas eduction unit, air-tight interfaces are connected to, and for connecting gas-detecting device, the gas directional later exhaust detection device that will be generated in test process.Battery pole piece of the invention produces gas in situ detection device, and structure is simple, easy for installation, a variety of liquid lithium battery systems can be applicable in, and the detection of the battery systems such as solid state lithium battery, sodium-ion battery needs, and can carry out producing gas measurement and mechanism study, detection is accurate and reliable.
Description
Technical field
The present invention relates to battery technologies, produce gas in situ detection device more particularly to a kind of battery pole piece.
Background technique
In recent years, in 3C, (computer Computer, communication Communication and consumer electronics produce lithium ion battery
Product Consumer Electronics), electric vehicle, the fields such as energy storage it is in an increasingly wide range of applications.Lithium battery production and
In use process, some materials can with produce gas the phenomenon that.The production gas of battery material system and active material, electrolyte and make
There is certain relationship with condition, such as positive electrode analyses oxygen under the conditions of overcharging, high temperature causes electrolyte to react to form production gas etc..
In use, excessively producing gas can cause battery structure deformation, internal pressure excessive to commercial battery, and may cause peace
Full accident.In the research process of new battery system and material, such as solid state lithium battery, sodium ion electromagnetism, to its gas production mechanism
Research to effectively improving battery performance and avoid safety problem important in inhibiting.
The production gas research method of the prior art is to carry out simulation use by preparing soft pack cell mostly, and to wherein producing
Gas is collected, and removes and carry out the test of ingredient and content.This method can not accomplish that in situ detection is analyzed, and living to battery
The dosage of the critical materials such as property material, electrolyte has certain requirement.In addition, using the measuring technology, it can not be to failure battery core
The production gas behavior of interior associated materials carries out sunykatuib analysis.Therefore, a small amount of critical material is studied and battery core analysis of failing is brought not
Just.
Summary of the invention
It is an object of the present invention to provide a kind of meet in battery material research and the research process that fails to production gas
The battery pole piece of in-situ test and mechanism study produces gas in situ detection device.
A further object of the present invention is to battery pole pieces to be made to produce gas in situ detection device convenient for operation and analysis.
Another further object of the present invention is to detection accuracies to be improved.
Particularly, the present invention provides a kind of battery pole pieces to produce gas in situ detection device comprising:
Battery clamp comprising upper fixture and lower fixture, and limited by upper fixture and lower fixture for fixing battery
The sealed chamber of body, upper fixture have air-tight interfaces；
Battery core includes at least pole piece to be measured；And
Gas eduction unit is connected to air-tight interfaces, and for connecting gas-detecting device, will generate in test process
Gas directional later exhaust detection device.
Optionally, battery core includes: pole piece to be measured, battery diaphragm and the lithium piece successively stacked, and pole to be measured
Separated respectively by tunica fibrosa between piece, battery diaphragm and lithium piece；And electrolyte is also perfused in seal chamber.
Optionally, battery core further include: locating part is arranged in pole piece top to be measured, and locating part and pole piece to be measured
Between also separated by tunica fibrosa, locating part includes: that insulation spacer and pole piece fixinig plate, center have limit hole；Gold
Belong to spring leaf and metal gasket, is arranged in limit hole, for limiting pole piece to be measured, battery diaphragm and lithium below
The lengthwise position of piece.
Optionally, the diameter range of pole piece to be measured is 18mm between 22mm；The diameter of lithium piece is greater than the straight of pole piece to be measured
Diameter, and the diameter range of lithium piece is 22mm between 24mm.
Optionally, gas eduction unit includes: the closed buckle of gas circuit, connects air-tight interfaces；Gas conduit, it is close by gas circuit
It closes and snaps connection air-tight interfaces, and lead to gas-detecting device；And gas-liquid separation membrane, it is set at air-tight interfaces, for keeping away
Exempt from liquid and enters gas conduit.
Optionally, above-mentioned battery pole piece produces gas in situ detection device further include: condensing unit is socketed on the outer of gas conduit
Side, the gas passed through for cooling gas conduit.
Optionally, above-mentioned battery pole piece produces gas in situ detection device further include: gas purification switch is arranged in gas conduit
It is interior, there is the open and close valve of opening and closing gas conduit and connect the purge valve of air feed equipment；And before starting detection, open and close valve
It closes, and purge valve is opened, so that air feed equipment provides cleaning air-flow and purifies to gas conduit.
Optionally, the internal diameter of gas conduit is less than or equal to 0.75mm, and length is less than or equal to 120mm.
Optionally, above-mentioned battery pole piece produces gas in situ detection device further include: circuit simulation device, be connected to upper fixture with
And lower fixture, and circuit is used for simulated battery in the detection process.
Optionally, above-mentioned battery pole piece produces gas in situ detection device further include: register, for being provided to simulated battery
Temperature environment needed for detection, the temperature control range that temperature environment is are -20 to 80 DEG C.
Battery pole piece of the invention produces gas in situ detection device, using battery clamp, forms the sealing of fixed battery core
Chamber, pole piece to be measured are arranged in sealed chamber in which can be convenient, and structure is simple, easy for installation, can be applicable in a variety of liquid lithiums
The detection of the battery systems such as battery system and solid state lithium battery, sodium-ion battery needs, and can carry out producing gas measurement and mechanism
Research.
Further, battery pole piece of the invention produces gas in situ detection device, is changed by the construction to battery chip
Into can effectively possess electrolyte and smooth export and produce gas.
Further, battery pole piece of the invention produces gas in situ detection device, by gas eduction unit and gas
The improvement for touching mouth, can carry out to avoid liquid into gas-detecting device, and can improve detection essence with despumation gas
Degree.
According to the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will be brighter
The above and other objects, advantages and features of the present invention.
Detailed description of the invention
Some specific embodiments of the present invention is described in detail by way of example and not limitation with reference to the accompanying drawings hereinafter.
Identical appended drawing reference denotes same or similar part or part in attached drawing.It should be appreciated by those skilled in the art that these
What attached drawing was not necessarily drawn to scale.In attached drawing:
Fig. 1 is the schematic diagram that battery pole piece according to an embodiment of the invention produces gas in situ detection device；
Fig. 2 is the exploded view that battery pole piece according to an embodiment of the invention produces gas in situ detection device；
Fig. 3 is the component point that battery pole piece according to an embodiment of the invention produces battery core in gas in situ detection device
Xie Tu；And
Fig. 4 is the schematic diagram that battery pole piece according to an embodiment of the invention produces gas in situ detection device detection environment.
Specific embodiment
Fig. 1 is the schematic diagram that battery pole piece according to an embodiment of the invention produces gas in situ detection device.Fig. 2 is basis
The battery pole piece of one embodiment of the invention produces the exploded view of gas in situ detection device.Fig. 3 is a reality according to the present invention
The battery pole piece for applying example produces the exploded view of battery core 100 in gas in situ detection device.Fig. 4 is a reality according to the present invention
The battery pole piece for applying example produces the schematic diagram of gas in situ detection device detection environment.The battery pole piece of the present embodiment produces gas in situ detection
Device generally may include: battery clamp 300, battery core 100, gas eduction unit 200.
Battery clamp 300 may include upper fixture 330 and lower fixture 340, and be limited by upper fixture 330 and lower fixture 340
Out for fixing the sealed chamber of battery core 100, upper fixture 330 has air-tight interfaces 222.Upper fixture 330 and lower fixture 340
It is respectively provided with the bulkhead of opposite extension, to cooperatively form sealed chamber by bulkhead.Upper fixture 330 and lower fixture 340 can be with
It is fixed by bolt 310 and bolt insulation sleeve 320.
The battery core 100 includes at least pole piece 136 to be measured.A kind of alternative construction of battery core 100 is successively to stack
Pole piece 136, battery diaphragm 137 and lithium piece 138 to be measured, and pole piece to be measured 136, battery diaphragm 137 and lithium piece 138 it
Between separated respectively by tunica fibrosa 135.
Battery core 100 can also include locating part, be arranged in 136 top of pole piece to be measured, and locating part and pole to be measured
Also separated by tunica fibrosa 135 between piece 136.Locating part may include: insulation spacer 131, pole piece fixinig plate 132, metal spring
Piece 133, metal gasket.The center of insulation spacer 131 and pole piece fixinig plate 132 has limit hole；133 He of metallic spring
Metal gasket is arranged in limit hole, for limiting pole piece to be measured 136 below, battery diaphragm 137 and lithium piece 138
Lengthwise position.
Upper fixture 330, lower fixture 340, metallic spring 133, metal gasket can be respectively stainless steel material, felt pad
Piece 131, pole piece fixinig plate 132 can be used polytetrafluoroethylene material and be made.In the case where these structures, battery core
100 include successively stacking: teflon insulation gasket 131, stainless steel leaf spring, stainless steel metal gasket, polytetrafluoroethyl-ne
Alkene pole piece fixinig plate 132, tunica fibrosa 135, pole piece to be measured 136, tunica fibrosa 135, battery diaphragm 137, tunica fibrosa 135, lithium metal
Piece 138.Wherein teflon insulation gasket 131, polytetrafluoroethylene (PTFE) pole piece fixinig plate 132 be located at annular shape, in the middle part of hole
For placing stainless steel leaf spring and stainless steel metal gasket, stainless steel leaf spring is used to limit the vertical of each layer of battery core 100
To position.
The bulkhead of lower fixture 340 can be inserted in the seal groove on teflon insulation gasket 131, upper fixture 330
Bulkhead is located at the periphery of teflon insulation gasket 131, forms sealing structure.
After battery core 100 is installed, electrolyte can also be perfused in seal chamber.If pole piece 136 to be measured is
Solid state battery is then not necessarily to inject electrolyte.
The battery pole piece of the present embodiment is produced in gas in situ detection device and can be carried out using the pole piece to be measured 136 being relatively large in diameter
Detection the more gas of output and can be smoothly discharged.Such as the diameter range of pole piece 136 to be measured can be for 18mm extremely
Between 22mm；The diameter of lithium piece 138 is greater than the diameter of pole piece 136 to be measured, and the diameter range of lithium piece 138 is 22mm to 24mm
Between.The size of the size of the other structures of battery clamp 300 and battery core 100 and pole piece 136 to be measured and lithium piece 138
It is adapted.
The battery pole piece of the present embodiment produces an optional specification of gas in situ detection device are as follows:
330 internal diameter 40mm of stainless steel upper fixture, inner barn wall thickness 4mm, height 5mm, outer diameter 60mm, in air-tight interfaces 222
Entreat hole diameter 3mm.340 internal diameter 30mm of fixture under stainless steel, inner barn wall thickness 4mm, height 10mm, outer diameter 60mm.Polytetrafluoro
Ethylene insulation spacer 131 internal diameter 26mm, outer diameter 40mm.133 diameter of metallic spring is no more than 20mm (being less than or equal to 20mm),
Stainless steel metal washer diameter 24mm, 132 outer diameter 29mm of polytetrafluoroethylene (PTFE) pole piece fixinig plate, internal diameter 26mm, thickness is no more than 1mm
(being less than or equal to 1mm).The diameter of each layer tunica fibrosa 135 is 26mm, 136 diameter 20mm of pole piece to be measured, 137 diameter of battery diaphragm
28mm, 138 diameter 24mm of lithium piece, thickness are no more than 2mm (being less than or equal to 2mm).Above-mentioned concrete specification is only a kind of preferred
Example sizes, those skilled in the art can in a certain range in proportion zoom in or out to above-mentioned size.
Gas eduction unit 200 is connected to air-tight interfaces 222, and for connecting gas-detecting device 410, will test
The gas directional later exhaust detection device 410 generated in the process.Gas-detecting device 410 can for electrochemistry differential mass spectrograph or
Gas chromatograph, the gas that gas-detecting device 410 is used to that battery core 100 to be precipitated are analyzed.
Gas eduction unit 200 may include: 220, gas conduit 210, gas-liquid separation membrane 221 of the closed buckle of gas circuit.Gas
The closed buckle 220 in road is for connecting the air-tight interfaces 222 of upper fixture 330.Gas conduit 210 is connected by the closed buckle 220 of gas circuit
Air-tight interfaces 222 are connect, and lead to gas-detecting device 410.Gas-liquid separation membrane 221 is set at air-tight interfaces 222, for keeping away
Exempt from liquid (electrolyte or other impurities) into gas conduit 210.Air-tight interfaces 222 can use 1/16 air-tight interfaces, separation
Film 221 can use polytetrafluorethyleseparation separation membrane.
It can also include: condensing unit 240 that battery pole piece, which produces gas in situ detection device,.The condensing unit 240 can be socketed
In the outside of gas conduit 210, the gas passed through for cooling gas conduit 210.Condensing unit 240 can use water-cooling pattern
It is cooled down.
It can also include: gas purification switch that battery pole piece, which produces gas in situ detection device,.Gas purification switch can be set
It sets in gas conduit 210, there is the open and close valve 231 of opening and closing gas conduit 210 and connects the purge valve of air feed equipment 420
232；And before starting detection, open and close valve 231 is closed, and purge valve 232 is opened, so that air feed equipment 420 provides cleaning gas
Stream purifies gas conduit 210.Such as gas purification switch can be tee tube, open and close valve 231 connects the closed card of gas circuit
The pipeline of button 220, purge valve 232 connect the pipeline of air feed equipment 420, and gas inspection is led in the outlet end connection of gas purification switch
Survey the pipeline of device 410.
Air feed equipment 420 can be before detection to 210 supplying inert gas of gas conduit (such as argon gas), to gas conduit
210 are cleaned, and the gases affect testing result in gas conduit 210 is avoided.
One optional specification of gas conduit 210 are as follows: internal diameter is less than or equal to 0.75mm, and length is less than or waits
In 120mm.The preferred size can guarantee that gas can be imported smoothly in gas analyzing apparatus.
Above-mentioned battery pole piece produces gas in situ detection device further include: circuit simulation device, be connected to upper fixture 330 and under
Fixture 340, and circuit is used for simulated battery in the detection process.Such as circuit simulation device can be to battery core 100
Carry out the charge and discharge process that charge and discharge is electrically operated, keeps battery completion detection required.
Battery pole piece produces gas in situ detection device and can be arranged in register.The register can be used for simulation
Temperature environment needed for battery provides detection, the temperature control range that temperature environment is are -20 to 80 DEG C.
The battery pole piece of the present embodiment, which produces gas in situ detection device, can be used for lithium ion battery, lithium solid state battery, sodium
The battery systems such as ion battery are detected, and detection process can be with are as follows:
Assembled battery core 100 in order injects appropriate electrolyte (solid state battery is without injection), uses 310 He of bolt
The fixed upper fixture 330 of bolt insulation sleeve 320 and lower fixture 340, gas eduction unit 200 and upper fixture 330 are fixed.It opens
Valve closing 231 is closed, and purge valve 232 is opened, and air feed equipment 420 is to 210 supplying inert gas of gas conduit, to gas conduit
210 are cleaned.Battery operating temperature needed for register maintains detection, after cleaning, purge valve 232 is closed, opening and closing
Valve 231 is opened.Circuit simulation device is electrically operated to battery progress charge and discharge, and the gas of battery output passes through gas eduction unit 200
Gas analyzing apparatus is fed to, gas analyzing apparatus produces gas to battery pole piece and carries out in situ detection.
So far, although those skilled in the art will appreciate that present invention has been shown and described in detail herein multiple shows
Example property embodiment still without departing from the spirit and scope of the present invention, still can according to the present disclosure directly
Determine or deduce out many other variations or modifications consistent with the principles of the invention.Therefore, the scope of the present invention is understood that and recognizes
It is set to and covers all such other variations or modifications.
Claims (10)
1. a kind of battery pole piece produces gas in situ detection device, characterized by comprising:
Battery clamp comprising upper fixture and lower fixture, and limited by the upper fixture and the lower fixture for fixed electricity
The sealed chamber of pond core, the upper fixture have air-tight interfaces；
The battery core includes at least pole piece to be measured；And
Gas eduction unit is connected to the air-tight interfaces, and for connecting gas-detecting device, will generate in test process
Gas be oriented to the gas-detecting device.
2. detection device according to claim 1, it is characterised in that
The battery core includes: pole piece, battery diaphragm and the lithium piece to be measured successively stacked, and the pole to be measured
Separated respectively by tunica fibrosa between piece, the battery diaphragm and the lithium piece；And
Electrolyte is also perfused in the seal chamber.
3. detection device according to claim 2, it is characterised in that the battery core further include:
Locating part is arranged in the pole piece top to be measured, and also by tunica fibrosa between the locating part and the pole piece to be measured
Separate, the locating part includes:
Insulation spacer and pole piece fixinig plate, center have limit hole；
Metallic spring and metal gasket are arranged in the limit hole, for limiting the pole piece to be measured, electricity below
The lengthwise position of pond diaphragm and lithium piece.
4. detection device according to claim 3, it is characterised in that
The diameter range of the pole piece to be measured is 18mm between 22mm；
The diameter of the lithium piece be greater than the pole piece to be measured diameter, and the diameter range of the lithium piece be 22mm to 24mm it
Between.
5. detection device according to claim 1, it is characterised in that the gas eduction unit includes:
The closed buckle of gas circuit, connects the air-tight interfaces；
Gas conduit snaps connection the air-tight interfaces by the way that the gas circuit is closed, and leads to the gas-detecting device；And
Gas-liquid separation membrane is set at the air-tight interfaces, for preventing liquid entry into the gas conduit.
6. detection device according to claim 5, it is characterised in that further include:
Condensing unit is socketed on the outside of the gas conduit, the gas passed through for cooling down the gas conduit.
7. detection device according to claim 5, it is characterised in that further include:
Gas purification switch, is arranged in the gas conduit, has the open and close valve for being opened and closed the gas conduit and connection
The purge valve of air feed equipment；And
Before starting detection, the open and close valve is closed, and the purge valve is opened, so that the air feed equipment provides cleaning air-flow
The gas conduit is purified.
8. detection device according to claim 5, it is characterised in that
The internal diameter of the gas conduit is less than or equal to 0.75mm, and length is less than or equal to 120mm.
9. detection device according to claim 1, it is characterised in that further include:
Circuit simulation device is connected to the upper fixture and the lower fixture, and makes for simulated battery in the detection process
Use circuit.
10. detection device according to claim 1, it is characterised in that further include:
Register, for temperature environment needed for providing detection to the simulated battery, the temperature control model that the temperature environment is
Enclose is -20 to 80 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910105101.8A CN109883880A (en) | 2019-02-01 | 2019-02-01 | Battery pole piece produces gas in situ detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910105101.8A CN109883880A (en) | 2019-02-01 | 2019-02-01 | Battery pole piece produces gas in situ detection device |
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| CN109883880A true CN109883880A (en) | 2019-06-14 |
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| CN201910105101.8A Pending CN109883880A (en) | 2019-02-01 | 2019-02-01 | Battery pole piece produces gas in situ detection device |
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| CN110320476A (en) * | 2019-06-17 | 2019-10-11 | 中国科学院物理研究所 | The analogue battery equipment of gas is produced in situ detection liquid state batteries |
| CN110954493A (en) * | 2019-12-17 | 2020-04-03 | 天目湖先进储能技术研究院有限公司 | Simulation battery device for in-situ detection of gas generation of solid-state battery |
| CN113138222A (en) * | 2021-06-01 | 2021-07-20 | 南京工业大学 | Electrochemical mass spectrum in-situ battery device |
| CN117288740A (en) * | 2023-11-27 | 2023-12-26 | 四方光电股份有限公司 | Raman probe-based battery charge-discharge gas production in-situ test device and test method |
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