CN103411795A - Gas gathering device for condition simulation - Google Patents
Gas gathering device for condition simulation Download PDFInfo
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- CN103411795A CN103411795A CN2013103501144A CN201310350114A CN103411795A CN 103411795 A CN103411795 A CN 103411795A CN 2013103501144 A CN2013103501144 A CN 2013103501144A CN 201310350114 A CN201310350114 A CN 201310350114A CN 103411795 A CN103411795 A CN 103411795A
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Abstract
The application discloses a gas gathering device for condition simulation. The device comprises a housing, a first electrode leading part and a second electrode leading part. The housing is enclosed into an enclosed space, and provided with an opening for putting the lithium ion battery into the housing; and a gas vent is arranged on one side surface closing to the bottom end of the housing. The first electrode leading part and the second electrode leading part are respectively arranged at one side surface of the housing, and extend from the inside of the housing to the outside, so as to electrically connect the lithium ion battery with extraneous equipment. According to the gas gathering device provided by the application, a sample lithium ion battery is placed in an enclosed space to reduce influence from the extraneous environment, thereby acquiring battery emission gas at a certain concentration; meanwhile, the first electrode leading part and the second electrode leading part led out from the housing can conveniently simulate various conditions, thereby facilitating test on gas emission state of the sample lithium ion battery in different conditions.
Description
Technical field
The application relates to the lithium ion battery detection field, particularly relates to a kind of gas collector for the lithium ion battery Work condition analogue.
Background technology
The safety standard of current battery pay close attention to more battery normal using, under foreseeable misuse and abuse condition, can realize not on fire, do not explode, and in the safe design of battery, releasing of gas is used as when inner pressure of battery rises rapidly preventing a kind of means of battery explosion.The electrolyte solvent used due to lithium battery is organic solvent basically, as acetonitrile, gamma-butyrolacton, dimethyl sulfoxide, dimethyl sulfite, 1,2-dimethoxy-ethane, dioxolanes, methyl formate, nitromethane, tetrahydrofuran etc., and these organic solvents have strong volatile, inflammability.The battery system of power, electric vehicles that energy is larger, when a large amount of gas tools of releasing when the battery short time were flammable, for electric vehicle, its consequence was serious.
In the domestic and international safety detection standard of existing battery for electric vehicle, only have ANSI/UL2580-2011 and SAE J2464-2009 to pay close attention to the release flammability issues of gas of battery system, its method is by the mode of some electric spark, to assess the potential combustibility of emission gases near exhausr port.But the scheme that ANSI/UL2580-2011 and SAE J2464-2009 propose is had relatively high expectations to security protection, if when the inflammable gas concentration of releasing in process of the test is larger, easily cause secondary accident.
Assessment to gas flammability, international, the standard of domestic existing maturation, as combustible gas explosion limit assay method in the GB/T12474-2008 air, GB19521.3-2004 inflammable gas dangerous cargo Tests on Hazardous Properties safety standard, ISO 10156:2010Gases and gas mixtures--Determination of fire potential and oxidizing ability for the selection of cylinder valve outlets(gas and gaseous mixture gas cylinder valve port are selected the mensuration by potential burning potentiality and oxidability), use the special testing instrument of gas flammability judgement, by flowmeter, control gas to be measured is mixed with air, the electricity consumption spark ignition, to determine whether gas to be measured is inflammable, and flammability limit.
To measure gas to be measured with the special testing instrument of gas flammability judgement, the collection of gas of releasing in the time of at first will realizing the battery abuse, but still not have at present especially for overcharging, put, the gas collector of the process of the test such as short circuit.
Summary of the invention
The application's purpose is to provide a kind of device that is used in particular for the battery diaphragm corona treatment of architecture advances.
To achieve these goals, the application has adopted following technical scheme:
The application discloses a kind of gas collector for the lithium ion battery Work condition analogue, and this gas collector comprises housing, the first electrode lead-out part spare and the second electrode lead-out part spare; Housing surrounds the space of sealing, on housing, has opening, and this opening is for lithium ion battery is put into to enclosure interior, and one of them side of housing is provided with vent port in the position near bottom; The first electrode lead-out part spare and the second electrode lead-out part spare are arranged at respectively one of them side of housing, the first electrode lead-out part spare and the second electrode lead-out part spare stretch out to the housing extension from the inside of housing, and two electrode lead-out part spares are electrically connected to extraneous equipment for the lithium ion battery that will be positioned in housing.During use, adopt wire that the both positive and negative polarity of battery is received respectively to two electrode lead-out part spares and get final product, two electrode lead-out part spares are connection device again.It should be noted that, opening on housing is to put into housing for the ease of the lithium ion battery by be detected, therefore, the particular location of this opening is not done concrete restriction in this application, in a kind of implementation of the application, this opening is arranged on the side of bottom of housing, and opening part is provided with closing door, after lithium ion battery to be detected is put into to housing, close this closing door, can realize that lithium ion battery detects under the environment of relative closure.
Further, the application's gas collector also comprises the temperature sensor that is positioned over the surface temperature of lithium ion battery in housing for induction.
In a kind of implementation of the application, the line of induction of temperature sensor stretches into enclosure interior, and during use, the line of induction sticks on the surface of lithium ion battery, thereby realizes the monitoring of lithium ion surface temperature.
Further, in order to ensure safety, at the top of housing, safety valve is installed.
Further, for the ease of controlling the gas purging by the lithium ion battery generation of enclosure interior, on vent port, be provided with the gas discharge valve.
In addition, for the ease of gathering, the application's gas collector, also configured gas sampling bag, and gas sampling bag is communicated with vent port by flexible pipe, by the switch of control gas discharge valve, by the gas discharging of lithium ion battery generation in gas sampling bag.
Owing to adopting above technical scheme, the application's beneficial effect is:
The application's gas collector, be placed in confined space by the sample lithium ion battery, can reduce the impact of external environment, obtains certain density battery Exhaust Gas; Simultaneously, can to various operating modes, simulate easily from the first electrode lead-out part spare and the second electrode lead-out part spare of housing, drawing, thereby facilitate the gas of specimen lithium ion battery under different working conditions to discharge situation.
In addition, in the application's preferred version, the gas discharge valve is placed in the device bottom, and the characteristics of utilizing Exhaust Gas to flow downward can be shifted original air in device the top of shell space onto, thereby obtain the Exhaust Gas of higher concentration; Utilize the line of induction of temperature sensor can monitor in real time the temperature of sample lithium ion battery surface, the situation that test is carried out according to the temperature variation analysis monitoring.And safety valve is equipped with at the top of housing, has explosion prevention function; The application's gas collector, its shell material is tough and tensile, at sample, occurs after the situation such as on fire, blast still reusable.
The accompanying drawing explanation
Fig. 1 is for the structural representation of the gas collector of lithium ion battery Work condition analogue in the application's embodiment;
In figure, 1 is housing, and 2 is temperature sensor, and 3 is the gas discharge valve, and 4 is that 5 is the first electrode lead-out part spare for the lithium ion battery of test, and 6 is the second electrode lead-out part spare, and 7 is safety valve.
Embodiment
The application provides a kind of gas collector of being convenient to different operating modes is carried out simulated experiment, the sample lithium ion battery is placed in to the housing of relative closure, not only avoided the impact of external environment on test, and, the destruction that the event such as on fire, blast that has also reduced may to occur in the testing process causes.And, in the position of the close bottom of housing, being provided with vent port, the convenient gas collection that the sample lithium ion battery is produced gets up.
Below by specific embodiment, also by reference to the accompanying drawings the application is described in further detail.Following examples only are further described the application, should not be construed as the restriction to the application.
Embodiment 1
The gas collector for the lithium ion battery Work condition analogue of this example, as shown in Figure 1, comprise housing 1, the first electrode lead-out part spare 5, the second electrode lead-out part spare 6 and temperature sensor 2; Housing 1 surrounds the space of sealing, and housing 1 is provided with opening, and safety valve 7 is equipped with at the top of housing 1, and the position near bottom on one of them side of housing 1 is provided with vent port, and gas discharge valve 3 is housed on vent port; The first electrode lead-out part spare 5 and the second electrode lead-out part spare 6 are arranged at respectively one of them side of described housing 1, the first electrode lead-out part spare 5 and the second electrode lead-out part spare 6 stretch out to the housing extension from the inside of housing, are electrically connected to extraneous equipment for the sample lithium ion battery 4 that will be positioned in housing; The line of induction of temperature sensor 2 stretches into the inside of housing 1, be used to connecting sample lithium ion battery 4.
This routine gas collector is realized its gas collection function in the following way:
(A) preparatory stage: sample lithium ion battery 4 is lain against in housing 1, the positive and negative electrode of lithium ion battery is connected with the second electrode lead-out part spare 6 with the first electrode lead-out part spare 5 with wire respectively, the line of induction of temperature sensor 2 is pasted on to the surface of sample lithium ion battery 4, simultaneously, close gas discharge valve 3, the sealing of device closing lid;
(B) experimental stage: utilize the first electrode lead-out part spare 5 and the second electrode lead-out part spare 6 to stretch out the outer part of housing and be connected different equipment or element, carry out the simulation of different operating modes, comprise short-circuit test, overcharge test, over-discharge test etc.The temperature variation on sample lithium ion battery 4 surfaces of detecting by temperature sensor 2 in test, monitor the situation that test is carried out;
(C) gas is derived the stage: with the flexible pipe of a suitable bore, gas sampling bag is communicated with the gas discharge valve 3 on vent port, open gas discharge valve 3, in use device, sample lithium ion battery 4 produces the normal pressure that gas produces, and Exhaust Gas is imported in gas sampling bag easily.
This routine gas collector has following features:
(A) this example is placed in confined space by the sample lithium ion battery, can reduce the impact of external environment, obtains certain density battery Exhaust Gas;
(B) the sample lithium ion battery is under different working conditions, and all Exhaust Gas likely, after sample is placed in device, utilize the outer end of electrode lead-out part spare can carry out easily various operating mode settings;
(C) the gas discharge valve is placed in the device bottom, and the characteristics of utilizing Exhaust Gas to flow downward can be shifted original air in device the top of device space onto, thereby obtain the Exhaust Gas of higher concentration;
(D) utilize the temperature sense line of temperature sensor can monitor in real time the Test condition of sample lithium ion battery;
(E) safety valve is equipped with on device top, has explosion prevention function;
(F) the device material is tough and tensile, at sample, occurs after the situation such as on fire, blast still reusable.
Above content is the further description of the application being done in conjunction with concrete embodiment, can not assert that the application's concrete enforcement is confined to these explanations.For the application person of an ordinary skill in the technical field, under the prerequisite that does not break away from the application's design, can also make some simple deduction or replace, all should be considered as belonging to the application's protection domain.
Claims (6)
1. the gas collector for the lithium ion battery Work condition analogue, is characterized in that: comprise housing (1), the first electrode lead-out part spare (5) and the second electrode lead-out part spare (6);
Described housing (1) surrounds the space of sealing, and housing (1) is provided with opening, and described opening is for lithium ion battery is put into to enclosure interior, and one of them side of housing is provided with vent port in the position near bottom;
Described the first electrode lead-out part spare (5) and the second electrode lead-out part spare (6) are arranged at respectively one of them side of described housing (1), the first electrode lead-out part spare (5) and the second electrode lead-out part spare (6) stretch out to the housing extension from the inside of housing, are electrically connected to extraneous equipment for the lithium ion battery that will be positioned in housing.
2. gas collector according to claim 1, is characterized in that: also comprise the temperature sensor (2) that is positioned over the surface temperature of lithium ion battery in housing for induction.
3. gas collector according to claim 2, it is characterized in that: the line of induction of described temperature sensor (2) stretches into enclosure interior, and during use, the described line of induction is pasted on the surface that is positioned over the lithium ion battery in housing.
4. gas collector according to claim 1, it is characterized in that: the top of described housing (1) is equipped with safety valve (7).
5. according to the described gas collector of claim 1 any one, it is characterized in that: on described vent port, be provided with gas discharge valve (3).
6. according to the described gas collector of claim 1-5 any one, it is characterized in that: also comprise gas sampling bag, described gas sampling bag is communicated with described vent port by flexible pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310350114.4A CN103411795B (en) | 2013-08-12 | 2013-08-12 | A kind of gas collector for lithium ion battery Work condition analogue |
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| CN201310350114.4A CN103411795B (en) | 2013-08-12 | 2013-08-12 | A kind of gas collector for lithium ion battery Work condition analogue |
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| CN103411795A true CN103411795A (en) | 2013-11-27 |
| CN103411795B CN103411795B (en) | 2016-02-24 |
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Cited By (5)
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| CN105259298A (en) * | 2015-10-21 | 2016-01-20 | 中国电力科学研究院 | Lithium ion battery combustion detection method |
| CN105372294A (en) * | 2015-10-21 | 2016-03-02 | 中国电力科学研究院 | Lithium ion battery exposure detection method |
| TWI638478B (en) * | 2017-06-16 | 2018-10-11 | 有量科技股份有限公司 | Degassing method for lithium battery cell |
| CN111295586A (en) * | 2018-06-07 | 2020-06-16 | 株式会社Lg化学 | Chamber and system for real-time analysis of gas generated in secondary battery |
| CN113009350A (en) * | 2021-02-24 | 2021-06-22 | 清华大学 | Method for analyzing influence of gas inside battery on thermal runaway and gas sampling device inside battery |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105259298A (en) * | 2015-10-21 | 2016-01-20 | 中国电力科学研究院 | Lithium ion battery combustion detection method |
| CN105372294A (en) * | 2015-10-21 | 2016-03-02 | 中国电力科学研究院 | Lithium ion battery exposure detection method |
| TWI638478B (en) * | 2017-06-16 | 2018-10-11 | 有量科技股份有限公司 | Degassing method for lithium battery cell |
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| CN111295586A (en) * | 2018-06-07 | 2020-06-16 | 株式会社Lg化学 | Chamber and system for real-time analysis of gas generated in secondary battery |
| CN111295586B (en) * | 2018-06-07 | 2022-05-10 | 株式会社Lg化学 | Chamber and system for real-time analysis of gas generated in secondary battery |
| US11650255B2 (en) | 2018-06-07 | 2023-05-16 | Lg Energy Solution, Ltd. | Chamber and system for real-time analysis of gas generated inside secondary battery |
| CN113009350A (en) * | 2021-02-24 | 2021-06-22 | 清华大学 | Method for analyzing influence of gas inside battery on thermal runaway and gas sampling device inside battery |
| CN113009350B (en) * | 2021-02-24 | 2022-02-11 | 清华大学 | Method for analyzing influence of gas inside battery on thermal runaway and gas sampling device |
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| CN103411795B (en) | 2016-02-24 |
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