CN105510174A - Apparatus and method for detecting gas inside battery - Google Patents
Apparatus and method for detecting gas inside battery Download PDFInfo
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- CN105510174A CN105510174A CN201410490437.8A CN201410490437A CN105510174A CN 105510174 A CN105510174 A CN 105510174A CN 201410490437 A CN201410490437 A CN 201410490437A CN 105510174 A CN105510174 A CN 105510174A
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Abstract
The invention provides a device and a method for detecting gas in a battery. In the apparatus for detecting gas inside a battery, the battery has a case provided with a through hole sealed and communicating with the inside of the case, and the outer shape of the case of the battery is kept fixed while detecting gas inside the battery. The detection apparatus for detecting gas inside a battery includes: the gas containing device is internally provided with a gas containing cavity; the communication device is used for enabling the gas containing cavity of the gas containing device to be in controlled communication with the through hole of the shell of the battery; the vacuumizing device is controlled to be communicated with the gas containing cavity of the gas containing device and is used for vacuumizing the gas containing device; the gas taking device is internally provided with a cavity, the volume of the cavity is variable and can be determined, and the cavity is communicated with the gas containing cavity of the gas containing device in a controlled manner; and the air pressure measuring device is controlled to be communicated with the air accommodating cavity of the air accommodating device and is used for measuring the pressure of the air in the air accommodating cavity of the air accommodating device.
Description
Technical field
The present invention relates to energy storage device field, particularly relating to a kind of Apparatus and method for for detecting inside battery gas.
Background technology
At present, take lithium ion battery as the novel battery that the secondary cell of representative belongs to high-energy-density, day by day become requisite Power Supply fittings on the communication products such as mobile phone, mobile DVD, notebook computer.Simultaneously; when Present Global auto industry faces the huge challenge of financial crisis and energy environment issues, the strategic transformation of orthodox car industry has become inevitable, Development of EV; realize the electrification of energy source of car power system, become and extensively know together in the world.Lithium ion battery, as one of clean energy resource that can be recycled, receives extensive concern.
Lithium ion battery is primarily of positive pole, negative pole, electrolytic solution and barrier film composition, and in its manufacture and use procedure, particularly under some abuse conditions and particular surroundings, the generation along with a series of chemistry and electrochemical reaction can produce a large amount of gas.Inside battery aerogenesis all has appreciable impact to the capacity of lithium ion battery, life-span and security, therefore Accurate Determining battery produce and use procedure in gas production rate and aerogenic composition, to the design of optimization battery system, analyze inside battery reaction mechanism and improve lithium ion battery security in the course of the work all significant.
The inside battery gas composition analysis method and apparatus had been reported at present, focuses mostly on to the gas sample in the completed battery of aerogenesis, then sample presentation analysis.Wherein existing gas sampling method is generally draining water gathering of gas law, namely dissects battery under water, collects the gas of discharging by discharge with a scale, that water is housed.This method operation is very inconvenient, and accuracy and reappearance are not good, and in anatomic course, in battery, strong corrosive material may enter tank, poor stability.For box hat battery, also can adopt and directly wear the method for battery core to inside battery gas componant sample analysis with sampling needle tubing bundle.Such as, on Dec 5th, 2012, the Chinese patent application publication No. of Granted publication was the collector that patent document discloses a kind of cylindrical steel inside lithium ion cell gas of CN202583139U, in airtight cavity, built-in draw point, pierces through sample analysis by battery case.Although this method is simple and convenient, wears housing with steel nail bundle and get the mode of gas with higher internal short-circuit security risk.To sum up, existing method of getting gas to inside battery aerogenesis is destructiveness and gets gas mode, and namely getting the battery after gas can not work on, and thus cannot realize repeatedly getting gas to monitor the change information of its aerogenic composition in cell operations to same battery.And all carry out for the battery with box hat structure about the analysis of gas production rate inside lithium ion battery at present.For soft bag lithium ionic cell, due to the difficulty of the scrambling of its dilatational strain and pipeline assembling, make existing quantitative detecting method and device and inapplicable.
Summary of the invention
In view of Problems existing in background technology, the object of the present invention is to provide a kind of Apparatus and method for for detecting inside battery gas, it quantitatively can detect and sample analysis the aerogenesis of same battery in different phase.
Another object of the present invention is to provide a kind of Apparatus and method for for detecting inside battery gas, it be non-damaged data, detect after battery can work on.
To achieve these goals, in first aspect, the invention provides a kind of equipment for detecting inside battery gas, battery has housing, the housing of battery arranges through hole that is Packed and that be communicated with the inside of housing, and the profile of the housing of battery keeps fixing when detecting inside battery gas.The described checkout equipment for detecting inside battery gas comprises: gas accommodation apparatus, is inside provided with gas host cavity; Communication apparatus, is communicated with the through hole of the housing of battery is controlled for making the gas host cavity of gas accommodation apparatus; Vacuum extractor, the controlled gas host cavity being communicated in gas accommodation apparatus, for vacuumizing gas accommodation apparatus; Collector, is inside provided with cavity, the variable volume of cavity and can determining, cavity is communicated with the gas host cavity of gas accommodation apparatus is controlled; And air pressure measuring apparatus, the gas host cavity of controlled connection gas accommodation apparatus, for the pressure of the gas in the gas host cavity of measurement gas accommodation apparatus.
To achieve these goals, in second aspect, the invention provides a kind of method for detecting inside battery gas, it adopts the equipment for detecting inside battery gas described according to a first aspect of the present invention, comprises step: vacuum extractor, air pressure measuring apparatus and collector are communicated with the gas host cavity of gas accommodation apparatus; Found time by the gas host cavity of vacuum extractor to gas accommodation apparatus, disconnect being communicated with between vacuum extractor and the gas host cavity of gas accommodation apparatus afterwards, maintain vacuum state with the gas host cavity of the air pressure measuring apparatus making to be interconnected, collector, gas accommodation apparatus; The through hole of the housing of the battery first making communication apparatus and an aerogenesis stage complete by communication apparatus is communicated with and then communication apparatus is communicated with the gas host cavity of gas accommodation apparatus, thus makes the gas of inside battery diffuse to the gas host cavity of gas accommodation apparatus; By the pressure of the gas after stable in the gas host cavity of air pressure measuring apparatus measurement gas accommodation apparatus, pressure is now designated as P
1; Make the amount that the volume increase of the cavity of collector is determined, to determine and the volume change recording this cavity is Δ V, the pressure P of the gas of air pressure measuring apparatus after to measure in the gas host cavity of the gas accommodation apparatus after the volume change Δ V of the cavity of collector stable
2; According to Boyle's law setting formulae discovery inside battery gas volume V under atmospheric pressure
0,
P
0V
0＝P
CV
C＝P
1(V
C+V
P)＝P
2(V
C+V
P+ΔV)
Wherein:
P
0-atmospheric pressure;
V
0the gas volume under atmospheric pressure that-inside battery produces;
P
cthe gaseous tension of inside battery before the through hole of the housing of-battery is communicated with the gas host cavity of gas accommodation apparatus;
V
cthe gas volume of inside battery before the through hole of the housing of-battery is communicated with the gas host cavity of gas accommodation apparatus;
P
1after the through hole of the housing of-battery is communicated with the gas host cavity of gas accommodation apparatus, the gaseous tension after stable in the gas host cavity of gas accommodation apparatus;
V
pafter the through hole of the housing of-battery is communicated with the gas host cavity of gas accommodation apparatus, except battery compartment, collector, gas accommodation apparatus, communication apparatus and air pressure measuring apparatus hold the volume of gas together;
The volume change of the cavity of the collector of Δ V-be communicated with the gas host cavity of gas accommodation apparatus;
P
2after the gas host cavity of-gas accommodation apparatus is communicated with the cavity after the volume change Δ V of collector, the pressure of the gas after stable in the gas host cavity of gas accommodation apparatus,
The profile of the housing of battery keeps fixing, i.e. V when detecting inside battery gas
cremain unchanged in testing process, according to Boyle's law, will the P obtained be detected
1, P
2formula P is substituted into Δ V value
1(V
c+ V
p)=P
2(V
c+ V
p+ Δ V), calculate after battery is communicated with the gas host cavity of gas accommodation apparatus, the gas volume V of inside battery
cinterior gas volume V is contained in together with collector, gas accommodation apparatus, communication apparatus and air pressure measuring apparatus
psum (V
c+ V
p); By atmospheric value P
0, detect the P obtained
1value and the (V calculated
c+ V
p) value substitution formula P
0v
0=P
cv
c=P
1(V
c+ V
p), calculate inside battery gas volume V under atmospheric pressure
0.
Beneficial effect of the present invention is as follows:
Quantitatively can detect and sample analysis the aerogenesis of same battery in different phase, thus for analyzing inside battery course of reaction, optimize battery system design, improve battery performance foundation is provided.In addition, because the through hole of the housing of battery can seal after detecting, thus can realize non-damaged data, the battery after namely detecting can work on.This device security is reliable, easy and simple to handle.
Accompanying drawing explanation
Fig. 1 is the structural representation according to the equipment for detecting inside battery gas of the present invention;
Fig. 2 is the structural representation of the gas accommodation apparatus according to the equipment for detecting inside battery gas of the present invention;
Fig. 3 is the structural representation of the valve according to the equipment for detecting inside battery gas of the present invention;
Fig. 4 be according to the equipment for detecting inside battery gas of the present invention for the structural representation of battery.
Wherein, description of reference numerals is as follows:
1 gas accommodation apparatus 6 valve
11 gas host cavity 61 flexible bottoms
12 body 611 passages
121 port 62 hard joints
13 block 63 lids
131 perforation 631 through holes
14 silica gel pad 64 pad of silica gel
2 communication apparatus 7 fixtures
3 vacuum extractor 71 first clamping plate
4 collector 72 second clamping plate
41 switch B bolts
42 scale 8 batteries
5 air pressure measuring apparatus 81 housings
N syringe needle 811 through hole
Embodiment
Describe in detail with reference to the accompanying drawings according to the Apparatus and method for for detecting inside battery gas of the present invention.
First the equipment for detecting inside battery gas is according to a first aspect of the present invention described.
Referring to figs. 1 through Fig. 4, according to a first aspect of the present invention for detecting in the equipment of inside battery gas, battery 8 has housing 81, the housing 81 of battery 8 arranges through hole 811 that is Packed and that be communicated with the inside of housing 81, and the profile of the housing 81 of battery 8 keeps fixing when detecting battery 8 internal gas.The described checkout equipment for detecting battery 8 internal gas comprises: gas accommodation apparatus 1, is inside provided with gas host cavity 11; Communication apparatus 2, the through hole 811 for the housing 81 of the gas host cavity 11 with battery 8 that make gas accommodation apparatus 1 is controlled to be communicated with; Vacuum extractor 3, the controlled gas host cavity 11 being communicated in gas accommodation apparatus 1, for vacuumizing gas accommodation apparatus 1; Collector 4, is inside provided with cavity, the variable volume of cavity and can determining, cavity is communicated with the gas host cavity 11 of gas accommodation apparatus 1 is controlled; And air pressure measuring apparatus 5, the gas host cavity 11 of controlled connection gas accommodation apparatus 1, for the pressure of the gas in the gas host cavity 11 of measurement gas accommodation apparatus 1.
Equipment for detecting inside battery gas of the present invention quantitatively can detect and sample analysis the aerogenesis of same battery in different phase, thus for analyzing inside battery course of reaction, optimize battery system design, improve battery performance foundation is provided.In addition, because the through hole 811 of the housing 81 of battery 8 can seal after detecting, thus can realize non-damaged data, the battery after namely detecting can work on.This device security is reliable, easy and simple to handle.
In an embodiment of gas accommodation apparatus 1, see figures.1.and.2, gas accommodation apparatus 1 can comprise: body 12, and gas host cavity 11 is formed in body 12, and body 12 is provided with four port ones 21 be communicated with gas host cavity 11; Four blocks 13, sheathed respectively and be fixed on four port one 21 places of body 12, each block 13 is provided with perforation 131; And four silica gel pads 14, each silica gel pad 14 is arranged between corresponding block 13 and the corresponding port one 21 of body 12, seals accordingly to make this between block 13 and this corresponding port one 21 of body 12; Wherein, vacuum extractor 3, collector 4, air pressure measuring apparatus 5 respectively through the perforation 131 on correspondence one block 13 of gas accommodation apparatus 1 by a syringe needle N are controlledly pierced through a corresponding silica gel pad 14 and are communicated with a corresponding port one 21 of body 12, thus are communicated with the gas host cavity 11 of gas accommodation apparatus 1 is controlled.In one embodiment, four blocks 13 can adopt respectively and are threaded sheathed and are fixed on four port one 21 places of body 12.
In an embodiment of vacuum extractor 3, vacuum extractor 3 can be vacuum pump.
In an embodiment of air pressure measuring apparatus 5, air pressure measuring apparatus 5 can be vacuum meter.
In an embodiment of collector 4, with reference to Fig. 1, collector 4 can be the gas-tight syringe being provided with switch 41 and scale 42.
In an embodiment of the equipment for detecting inside battery gas according to a first aspect of the present invention, with reference to Fig. 1 and Fig. 3, the described equipment for detecting inside battery gas also can comprise: valve 6, sealing is arranged on the through hole 811 of the housing 81 of battery 8, and communication apparatus 2 makes the gas host cavity 11 of gas accommodation apparatus 1 be communicated with the through hole 811 of the housing 81 of battery 8 is controlled via valve 6.The through hole 811 that valve 6 sealing is arranged at the housing 81 of battery 8 can be opened hole 811 to housing 81 and carry out sealing and be provided with before battery 8 aerogenesis.
In an embodiment of valve 6, with reference to Fig. 1 and Fig. 3, valve 6 can comprise: flexible bottom 61, and the position seals of the through hole 811 of the housing 81 of corresponding battery 8 fits on the housing 81 of battery 8, and is provided with the passage 611 be communicated with the through hole 811 of the housing 81 of battery 8; Hard joint 62, one end is sheathed in the passage 611 of flexible bottom 61; Lid 63, the other end being set in hard joint 62 is provided with through hole 631; And pad of silica gel 64, be arranged between the described other end of hard joint 62 and lid 63, to make to seal between the described other end of hard joint 62 and lid 63; Wherein: communication apparatus 2 is bidirectional needle; The side of bidirectional needle N is through the perforation 131 on correspondence one block 13 of gas accommodation apparatus 1 and controlledly pierce through a corresponding silica gel pad 14 and be communicated with a corresponding port one 21 of body 12, thus is communicated with the gas host cavity 11 of gas accommodation apparatus 1 is controlled; The opposite side of bidirectional needle through valve 6 through hole 631 and controlledly pierce through the pad of silica gel 64 of valve 6 and be communicated with the passage 611 of flexible bottom 61, thus to be communicated with the through hole 811 of the housing 81 of battery 8 is controlled.It should be noted that at this, pad of silica gel 64 and silica gel pad 14 can adopt identical material; Lid 63 and block 13 can adopt identical structure, to realize compatibility.
In an embodiment of valve 6, the flexible bottom 61 of valve 6 can seal the housing 81 fitting in battery 8 via fluid sealant.
In an embodiment of the equipment for detecting inside battery gas according to a first aspect of the present invention, with reference to Fig. 1, housing 81 is flexible packaging housing; The described equipment for detecting inside battery gas also can comprise: fixture 7, for the housing 81 of retain batteries 8, keeps fixing to make the profile of the housing 81 of battery 8 when detecting battery 8 internal gas.Fixture 7 can prevent battery 8 dilatational strain, thus the space holding gas in battery 8 is remained unchanged in testing process.The present invention can ensure the security of the collector of the inside battery gas for having flexible packaging housing, and irregular deformation easily occurs after solving flexible-packed battery aerogenesis and is difficult to the problem of carrying out the aspects such as pipeline assembling, the battery achieved having flexible packaging quantitatively detects and sample analysis at the aerogenesis of different phase.
In an embodiment of fixture 7, with reference to Fig. 1, fixture 7 can comprise: the first clamping plate 71, first clamping plate 71 are provided with the opening (not shown) that valve 6 is passed through; Second clamping plate 72, relative with the first clamping plate 71 and battery 8 is clipped between the first clamping plate 71 and the second clamping plate 72 together with the first clamping plate 71, keep fixing when detecting battery 8 internal gas to make the profile of the housing 81 of battery 8.
In an embodiment of fixture 7, with reference to Fig. 1, the first clamping plate 71 and the second clamping plate 72 are fixed together by bolt B.
In an embodiment of the equipment for detecting inside battery gas according to a first aspect of the present invention, housing 81 can be duricrust housing.
In an embodiment of the equipment for detecting inside battery gas according to a first aspect of the present invention, battery 8 can be one-shot battery or secondary cell.
In an embodiment of the equipment for detecting inside battery gas according to a first aspect of the present invention, secondary cell can be lithium ion battery, nickel-cadmium battery, Ni-MH battery, lead-acid battery or solar cell.
The following explanation method for detecting inside battery gas according to a second aspect of the present invention.
Referring to figs. 1 through Fig. 4, the equipment for detect inside battery gas described according to a first aspect of the present invention for the method employing detecting inside battery gas according to a second aspect of the present invention, comprise step: by vacuum extractor 3 (such as vacuum pump), air pressure measuring apparatus 5 (such as vacuum meter) and collector 4 (such as gas-tight syringe) are communicated with (such as with the gas host cavity 11 of gas accommodation apparatus 1, vacuum extractor 3, collector 4, air pressure measuring apparatus 5 is communicated with the gas host cavity 11 of gas accommodation apparatus 1 each via a syringe needle N), found time by the gas host cavity 11 of vacuum extractor 3 pairs of gas accommodation apparatus 1, disconnect vacuum extractor 3 and being communicated with between gas accommodation apparatus 1 gas host cavity 11 afterwards, maintain vacuum state with the gas host cavity 11 of the air pressure measuring apparatus 5 making to be interconnected, collector 4, gas accommodation apparatus 1, the through hole 811 of the housing 81 of the battery 8 first making communication apparatus 2 and an aerogenesis stage complete by communication apparatus 2 (such as bidirectional needle) is communicated with and then communication apparatus 2 is communicated with the gas host cavity 11 of gas accommodation apparatus 1, thus makes the gas of battery 8 inside diffuse to the gas host cavity 11 of gas accommodation apparatus 1, by the pressure of the gas after stable in the gas host cavity 11 of air pressure measuring apparatus 5 measurement gas accommodation apparatus 1, pressure is now designated as P
1, make amount that the volume increase of the cavity of collector 4 is determined (such as, collector 4 is for being provided with the gas-tight syringe of switch 41 and scale 42, and control the volume of the cavity of collector 4 by the switch 41 arranged, determined the amount of the increase of the volume of cavity by the scale 42 arranged), to determine and the volume change recording this cavity is Δ V, the pressure P of the gas of air pressure measuring apparatus 5 after to measure in the gas host cavity 11 of the gas accommodation apparatus 1 after the volume change Δ V of the cavity of collector 4 stable
2, according to Boyle's law setting formulae discovery inside battery gas volume V under atmospheric pressure
0,
P
0V
0＝P
CV
C＝P
1(V
C+V
P)＝P
2(V
C+V
P+ΔV)
Wherein:
P
0-atmospheric pressure;
V
0the gas volume under atmospheric pressure that-battery 8 inside produces;
P
cthe through hole 811 of the housing 81 of-battery 8 is communicated with the gaseous tension of front battery 8 inside with the gas host cavity 11 of gas accommodation apparatus 1;
V
cthe through hole 811 of the housing 81 of-battery 8 is communicated with the gas volume of front battery 8 inside with the gas host cavity 11 of gas accommodation apparatus 1;
P
1after the through hole 811 of the housing 81 of-battery 8 is communicated with the gas host cavity 11 of gas accommodation apparatus 1, the gaseous tension after stable in the gas host cavity 11 of gas accommodation apparatus 1;
V
pafter the through hole 811 of the housing 81 of-battery 8 is communicated with the gas host cavity 11 of gas accommodation apparatus 1, except battery 8 part, collector 4, gas accommodation apparatus 1, communication apparatus 2 and air pressure measuring apparatus 5 hold the volume of gas together;
The volume change of the cavity of the collector 4 of Δ V-be communicated with the gas host cavity 11 of gas accommodation apparatus 1;
P
2after the gas host cavity 11 of-gas accommodation apparatus 1 is communicated with the cavity after the volume change Δ V of collector 4, the pressure of the gas after stable in the gas host cavity 11 of gas accommodation apparatus 1,
The profile of the housing 81 of battery 8 keeps fixing, i.e. V when detecting battery 8 internal gas
cremain unchanged in testing process, according to Boyle's law, will the P obtained be detected
1, P
2formula P is substituted into Δ V value
1(V
c+ V
p)=P
2(V
c+ V
p+ Δ V), calculate after battery 8 is communicated with the gas host cavity 11 of gas accommodation apparatus 1, the gas volume V of battery 8 inside
cinterior gas volume V is contained in together with collector 4, gas accommodation apparatus 1, communication apparatus 2 and air pressure measuring apparatus 5
psum (V
c+ V
p); By atmospheric value P
0, detect the P obtained
1value and the (V calculated
c+ V
p) value substitution formula P
0v
0=P
cv
c=P
1(V
c+ V
p), calculate battery 8 internal gas volume V under atmospheric pressure
0.
According to a second aspect of the present invention for detecting in the method for inside battery gas, also step can be comprised: the composition of battery 8 internal gas is analyzed: utilize collector 4 to be sampled by the gas in the cavity of collector 4, the gas inject gas chromatograph of sampling is carried out gas composition analysis.
According to a second aspect of the present invention for detecting in the method for inside battery gas, also step can be comprised: after battery 8 and gas accommodation apparatus 1 disconnect, through hole 811 on the housing 81 of battery 8 seals, battery 8 enters another aerogenesis stage, detection battery 8 internal gas after another aerogenesis stage completes.Realize thus the quantitative detection of same battery at different phase aerogenesis.
Claims (10)
1., for detecting an equipment for inside battery gas, battery (8) has housing (81), it is characterized in that,
The housing (81) of battery (8) arranges through hole (811) that is Packed and that be communicated with the inside of housing (81), and the profile of the housing (81) of battery (8) keeps fixing when detecting battery (8) internal gas;
The described equipment for detecting inside battery gas comprises:
Gas accommodation apparatus (1), is inside provided with gas host cavity (11);
Communication apparatus (2), the through hole (811) for the housing (81) of the gas host cavity (11) with battery (8) that make gas accommodation apparatus (1) is controlled to be communicated with;
Vacuum extractor (3), the controlled gas host cavity (11) being communicated in gas accommodation apparatus (1), for vacuumizing gas accommodation apparatus (1);
Collector (4), is inside provided with cavity, the variable volume of cavity and can determining, cavity is communicated with the gas host cavity (11) of gas accommodation apparatus (1) is controlled; And
Air pressure measuring apparatus (5), the gas host cavity (11) of controlled connection gas accommodation apparatus (1), for the pressure of the gas in the gas host cavity (11) of measurement gas accommodation apparatus (1).
2. the equipment for detecting inside battery gas according to claim 1, is characterized in that, gas accommodation apparatus (1) comprising:
Body (12), gas host cavity (11) is formed in body (12), and body (12) is provided with four ports (121) be communicated with gas host cavity (11);
Four blocks (13), sheathed respectively and be fixed on four port (121) places of body (12), each block (13) is provided with perforation (131); And
Four silica gel pads (14), each silica gel pad (14) is arranged between the corresponding port (121) of corresponding block (13) and body (12), seals accordingly to make this between block (13) and this corresponding port (121) of body (12);
Wherein, vacuum extractor (3), collector (4), air pressure measuring apparatus (5) respectively controlled pierce through a correspondence silica gel pad (14) and being communicated with a corresponding port (121) of body (12) by a syringe needle (N) through the perforation (131) in the correspondence one block (13) of gas accommodation apparatus (1), thus are communicated with the gas host cavity (11) of gas accommodation apparatus (1) is controlled.
3. the equipment for detecting inside battery gas according to claim 2, is characterized in that, the described equipment for detecting inside battery gas also comprises:
Valve (6), sealing is arranged on the through hole (811) of the housing (81) of battery (8), and communication apparatus (2) makes the gas host cavity (11) of gas accommodation apparatus (1) be communicated with the through hole (811) of the housing (81) of battery (8) is controlled via valve (6).
4. the equipment for detecting inside battery gas according to claim 3, is characterized in that, valve (6) comprising:
Flexible bottom (61), the position seals of the through hole (811) of the housing (81) of corresponding battery (8) fits on the housing (81) of battery (8), and is provided with the passage (611) be communicated with the through hole of the housing of battery (8) (81) (811);
Hard joint (62), one end is sheathed in the passage (611) of flexible bottom (61);
Lid (63), the other end being set in hard joint (62) is provided with through hole (631); And
Pad of silica gel (64), is arranged between the described other end of hard joint (62) and lid (63), to make to seal between the described other end of hard joint (62) and lid (63); Wherein:
Communication apparatus (2) is bidirectional needle;
The side of bidirectional needle is through the perforation (131) in the correspondence one block (13) of gas accommodation apparatus (1) and controlledly pierce through a correspondence silica gel pad (14) and be communicated with a corresponding port (121) of body (12), thus is communicated with the gas host cavity (11) of gas accommodation apparatus (1) is controlled;
The opposite side of bidirectional needle through valve (6) through hole (631) and controlledly pierce through the pad of silica gel (64) of valve (6) and be communicated with the passage (611) of flexible bottom (61), thus to be communicated with the through hole (811) of the housing (81) of battery (8) is controlled.
5. the equipment for detecting inside battery gas according to claim 4, is characterized in that, the flexible bottom (61) of valve (6) seals the housing (81) fitting in battery (8) via fluid sealant.
6. the equipment for detecting inside battery gas according to claim 1, is characterized in that,
Housing (81) is flexible packaging housing;
The described equipment for detecting inside battery gas also comprises:
Fixture (7), for the housing (81) of retain batteries (8), keeps fixing to make the profile of the housing (81) of battery (8) when detecting battery (8) internal gas.
7. the equipment for detecting inside battery gas according to claim 6, is characterized in that, fixture (7) comprising:
First clamping plate (71), the first clamping plate (71) are provided with the opening that valve (6) is passed through;
Second clamping plate (72), relative with the first clamping plate (71) and together with the first clamping plate (71), battery (8) is clipped between the first clamping plate (71) and the second clamping plate (72), keep fixing when detecting battery (8) internal gas to make the profile of the housing (81) of battery (8).
8. the equipment for detecting inside battery gas according to claim 1, is characterized in that, housing (81) is duricrust housing (81).
9., for detecting a method for inside battery gas, adopting the equipment for detecting inside battery gas according to any one of claim 1-8, it is characterized in that, comprise step:
Vacuum extractor (3), air pressure measuring apparatus (5) and collector (4) are communicated with the gas host cavity (11) of gas accommodation apparatus (1);
Vacuumized by the gas host cavity (11) of vacuum extractor (3) to gas accommodation apparatus (1), disconnect being communicated with between vacuum extractor (3) and the gas host cavity (11) of gas accommodation apparatus (1) afterwards, maintain vacuum state with the gas host cavity (11) of the air pressure measuring apparatus (5) making to be interconnected, collector (4), gas accommodation apparatus (1);
The through hole (811) of the housing (81) of the battery (8) first making communication apparatus (2) and an aerogenesis stage complete by communication apparatus (2) is communicated with and then communication apparatus (2) is communicated with the gas host cavity (11) of gas accommodation apparatus (1), thus makes the inner gas of battery (8) diffuse to the gas host cavity (11) of gas accommodation apparatus (1);
By the pressure of the gas after stable in the gas host cavity (11) of air pressure measuring apparatus (5) measurement gas accommodation apparatus (1), pressure is now designated as P
1;
Make the amount that the volume increase of the cavity of collector (4) is determined, to determine and the volume change recording this cavity is Δ V, the pressure P of the gas of air pressure measuring apparatus (5) after to measure in the gas host cavity (11) of the gas accommodation apparatus (1) after the volume change Δ V of the cavity of collector (4) stable
2;
According to Boyle's law setting formulae discovery inside battery gas volume V under atmospheric pressure
0,
P
0V
0＝P
CV
C＝P
1(V
C+V
P)＝P
2(V
C+V
P+ΔV)
Wherein:
P
0-atmospheric pressure;
V
0the gas volume under atmospheric pressure that-battery (8) inside produces;
P
cthe gaseous tension that before the through hole (811) of the housing (81) of-battery (8) is communicated with the gas host cavity (11) of gas accommodation apparatus (1), battery (8) is inner;
V
cthe gas volume that before the through hole (811) of the housing (81) of-battery (8) is communicated with the gas host cavity (11) of gas accommodation apparatus (1), battery (8) is inner;
P
1after the through hole (811) of the housing (81) of-battery (8) is communicated with the gas host cavity (11) of gas accommodation apparatus (1), the gaseous tension after stable in the gas host cavity (11) of gas accommodation apparatus (1);
V
pafter the through hole (811) of the housing (81) of-battery (8) is communicated with the gas host cavity (11) of gas accommodation apparatus (1), except battery (8) part, collector (4), gas accommodation apparatus (1), communication apparatus (2) and air pressure measuring apparatus (5) hold the volume of gas together;
The volume change of the cavity of the collector (4) of Δ V-be communicated with the gas host cavity (11) of gas accommodation apparatus (1);
P
2after the gas host cavity (11) of-gas accommodation apparatus (1) is communicated with the cavity after the volume change Δ V of collector (4), the pressure of the gas after stable in the gas host cavity (11) of gas accommodation apparatus (1)
The profile of the housing (81) of battery (8) keeps fixing, i.e. V when detecting battery (8) internal gas
cremain unchanged in testing process, according to Boyle's law, will the P obtained be detected
1, P
2formula P is substituted into Δ V value
1(V
c+ V
p)=P
2(V
c+ V
p+ Δ V), calculate after battery (8) is communicated with the gas host cavity (11) of gas accommodation apparatus (1), the gas volume V that battery (8) is inner
cinterior gas volume V is contained in together with collector (4), gas accommodation apparatus (1), communication apparatus (2) and air pressure measuring apparatus (5)
psum (V
c+ V
p); By atmospheric value P
0, detect the P obtained
1value and the (V calculated
c+ V
p) value substitution formula P
0v
0=P
cv
c=P
1(V
c+ V
p), calculate battery (8) internal gas volume V under atmospheric pressure
0.
10. the method for detecting inside battery gas according to claim 9, is characterized in that, also comprise step:
The composition of battery (8) internal gas is analyzed: utilize collector (4) to be sampled by the gas in the cavity of collector (4), the gas inject gas chromatograph of sampling is carried out gas composition analysis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106289396A (en) * | 2016-08-12 | 2017-01-04 | 合肥国轩高科动力能源有限公司 | A kind of detection analytical equipment measuring inside battery total gas production and aerogenic composition |
| CN107490764A (en) * | 2016-06-13 | 2017-12-19 | 宁德时代新能源科技股份有限公司 | Method for detecting internal pressure of battery and method for detecting volume of battery |
| CN108802276A (en) * | 2017-05-03 | 2018-11-13 | 宁德时代新能源科技股份有限公司 | Gas production test system for battery cell |
| CN109596982A (en) * | 2017-09-28 | 2019-04-09 | 宁德时代新能源科技股份有限公司 | battery detection structure |
| CN109935919A (en) * | 2017-12-19 | 2019-06-25 | 中国科学院物理研究所 | A kind of gas collecting device for battery |
| CN112213406A (en) * | 2019-11-21 | 2021-01-12 | 蜂巢能源科技有限公司 | Method and system for measuring amount of gas in battery cell |
| CN113390981A (en) * | 2021-05-24 | 2021-09-14 | 超威电源集团有限公司 | Storage battery gassing test equipment and method |
| CN113655152A (en) * | 2021-09-09 | 2021-11-16 | 南京工业大学 | Battery gas production analysis system |
| CN114544270A (en) * | 2021-08-10 | 2022-05-27 | 万向一二三股份公司 | Sampling device and quantitative analysis method for gas in soft package lithium ion battery |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004039587A (en) * | 2002-07-08 | 2004-02-05 | Matsushita Electric Ind Co Ltd | Manufacturing method of lithium ion secondary cell |
| CN101281984A (en) * | 2008-05-23 | 2008-10-08 | 天津力神电池股份有限公司 | Method and apparatus for detecting inner pressure of lithium ion battery |
| CN201188018Y (en) * | 2008-04-11 | 2009-01-28 | 宁波伊司达锂电池有限公司 | Aerogenesis collection and detection apparatus within lithium ion battery |
| CN101598641A (en) * | 2009-07-30 | 2009-12-09 | 天津力神电池股份有限公司 | A kind of collection and detection device of gas generated in lithium ion battery |
| CN202583139U (en) * | 2012-03-06 | 2012-12-05 | 宁德新能源科技有限公司 | Gas-collecting device for gas inside cylindrical steel shell lithium ion battery |
-
2014
- 2014-09-23 CN CN201410490437.8A patent/CN105510174B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004039587A (en) * | 2002-07-08 | 2004-02-05 | Matsushita Electric Ind Co Ltd | Manufacturing method of lithium ion secondary cell |
| CN201188018Y (en) * | 2008-04-11 | 2009-01-28 | 宁波伊司达锂电池有限公司 | Aerogenesis collection and detection apparatus within lithium ion battery |
| CN101281984A (en) * | 2008-05-23 | 2008-10-08 | 天津力神电池股份有限公司 | Method and apparatus for detecting inner pressure of lithium ion battery |
| CN101598641A (en) * | 2009-07-30 | 2009-12-09 | 天津力神电池股份有限公司 | A kind of collection and detection device of gas generated in lithium ion battery |
| CN202583139U (en) * | 2012-03-06 | 2012-12-05 | 宁德新能源科技有限公司 | Gas-collecting device for gas inside cylindrical steel shell lithium ion battery |
Non-Patent Citations (1)
| Title |
|---|
| 刘秀喜等: "《高纯气体的性质、制造和应用》", 30 June 1997, 电子工业出版社 * |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107490764A (en) * | 2016-06-13 | 2017-12-19 | 宁德时代新能源科技股份有限公司 | Method for detecting internal pressure of battery and method for detecting volume of battery |
| CN107490764B (en) * | 2016-06-13 | 2019-07-30 | 宁德时代新能源科技股份有限公司 | Method for detecting internal pressure of battery and method for detecting volume of battery |
| CN106289396A (en) * | 2016-08-12 | 2017-01-04 | 合肥国轩高科动力能源有限公司 | A kind of detection analytical equipment measuring inside battery total gas production and aerogenic composition |
| CN108802276A (en) * | 2017-05-03 | 2018-11-13 | 宁德时代新能源科技股份有限公司 | Gas production test system for battery cell |
| CN109596982A (en) * | 2017-09-28 | 2019-04-09 | 宁德时代新能源科技股份有限公司 | battery detection structure |
| CN109935919B (en) * | 2017-12-19 | 2022-05-17 | 中国科学院物理研究所 | Gas collecting device for battery |
| CN109935919A (en) * | 2017-12-19 | 2019-06-25 | 中国科学院物理研究所 | A kind of gas collecting device for battery |
| CN112213406A (en) * | 2019-11-21 | 2021-01-12 | 蜂巢能源科技有限公司 | Method and system for measuring amount of gas in battery cell |
| CN113390981A (en) * | 2021-05-24 | 2021-09-14 | 超威电源集团有限公司 | Storage battery gassing test equipment and method |
| CN114544270A (en) * | 2021-08-10 | 2022-05-27 | 万向一二三股份公司 | Sampling device and quantitative analysis method for gas in soft package lithium ion battery |
| CN114544270B (en) * | 2021-08-10 | 2024-04-30 | 万向一二三股份公司 | Sampling device and quantitative analysis method for gas in soft-package lithium ion battery |
| CN113655152A (en) * | 2021-09-09 | 2021-11-16 | 南京工业大学 | Battery gas production analysis system |
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