CN108931280A - A kind of detection device and its detection method of lithium ion battery volume - Google Patents
A kind of detection device and its detection method of lithium ion battery volume Download PDFInfo
- Publication number
- CN108931280A CN108931280A CN201810633310.5A CN201810633310A CN108931280A CN 108931280 A CN108931280 A CN 108931280A CN 201810633310 A CN201810633310 A CN 201810633310A CN 108931280 A CN108931280 A CN 108931280A
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- gas
- storehouse
- gas storehouse
- lithium ion
- pipeline
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F17/00—Methods or apparatus for determining the capacity of containers or cavities, or the volume of solid bodies
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L11/00—Measuring steady or quasi-steady pressure of a fluid or a fluent solid material by means not provided for in group G01L7/00 or G01L9/00
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Secondary Cells (AREA)
Abstract
The present invention relates to the detection devices and its detection method of a kind of lithium ion battery volume, including gas storehouse A and gas storehouse B, the gas storehouse A is connected to vacuum pump, gas cylinder with gas storehouse B by the first pipeline, and pass through the second pipeline connection between gas storehouse A and gas storehouse B, it is provided with valve on first pipeline and the second pipeline, is equipped with accurate barometer and thermometer on the gas storehouse A and gas storehouse B.Compared to traditional immersion method, tested person ambient temperature conditions and liquid density variation condition do not influence the detection device and its detection method of lithium ion battery volume of the present invention, are not limited by battery sample specification, it is simpler convenient to test；The equation for ideal gases that the present invention utilizes is close with actual conditions within the scope of lower pressure, and test result and true value error are smaller, and test result is more acurrate.
Description
Technical field
The present invention relates to technical field of lithium ion, and in particular to a kind of detection device of lithium ion battery volume and its
Detection method.
Background technique
For lithium ion battery due to operating voltage height, specific energy density is big, has extended cycle life, environmentally friendly, has become
One of indispensable important electrochmical power source in the fields such as electronic digital, electric car, stored energy application, aerospace.However it is traditional
Lithium ion battery be typically all use carbonates electrolyte, these electrolyte components for the first time be melted into when can be in electrode material
Redox reaction occurs for surface, forms solid-state-dielectric film, while releasing the gaseous products such as hydrogen, methane；In addition, composition
The positive electrode of lithium ion battery is that metal oxide materials especially have tertiary cathode material compared with high-energy-density mostly,
It is easy during cycle charge-discharge so that electrolyte oxidation, which decomposes, produces gas, this production gas phenomenon is more obvious under hot conditions.Lithium
The gas of the generation of ion battery in use will lead to lithium ion battery volume expansion, thus to capacity, internal resistance, circulation
Etc. performances have an important influence on, therefore pass through body of the detection lithium ion battery before and after forming and capacity dividing, high temperature are shelved and recycled
Product variation can calculate the gas production of inside lithium ion cell and carry out Analysis of Failure Mechanism.
However regardless of the specification of lithium ion battery is aluminum plastic film Soft Roll, rectangular aluminum hull or round aluminum hull etc., when generation gas
Meeting after body expansion is difficult to detect its reality by traditional measurement method so that the irregular volume change of lithium ion battery generation
Volume.Common method is the apparent mass after measuring quality of lithium ion battery sample itself and being immersed in liquid, benefit
The volume of lithium ion battery sample can be calculated with Archimedes principle.The patent report of Publication No. CN 206488826U
A kind of device using drainage measurement soft bag lithium ionic cell volume, calculates lithium-ion electric also with Archimedes principle
The volume of pond sample.This method test device is complicated, very poor to the adaptability of test sample, and test result is easy by environment temperature
The influence of degree and liquid density variation.
Summary of the invention
The purpose of the present invention is to provide the detection device and its detection method of a kind of lithium ion battery volume, the electrical appliance kits
It is versatile, various fork truck vehicles can be applicable in.
To achieve the above object, the invention adopts the following technical scheme:
A kind of detection device of lithium ion battery volume, including gas storehouse A and gas storehouse B, the gas storehouse A and gas storehouse
B is connected to vacuum pump, gas cylinder by the first pipeline, and by the second pipeline connection between gas storehouse A and gas storehouse B, described
It is provided with valve on first pipeline and the second pipeline, is equipped with accurate barometer and temperature on the gas storehouse A and gas storehouse B
Meter.
As a further improvement of the above technical scheme:
The piston for excluding air in gas storehouse A and gas storehouse B is equipped on the gas storehouse A and gas storehouse B.
The gas storehouse B is equipped with door, which can make gas storehouse B form a confined space in the off state.
(1) gas cylinder, vacuum pump and gas storehouse A and B that store object gas are connected by pipeline, wherein closed gas
Body storehouse A has movable piston, and closed gas storehouse B is openable to be put into battery sample, and two gas storehouses can be fully sealed simultaneously
Configured with microthermometer and pressure gauge, conveyed between two storehouses by pipeline valve folding control gas；
(2) mesuring battary sample is put into the B of gas storehouse, gas storehouse A and gas storehouse B is kept to be in air-tight state, closed
The pipeline valve held one's breath between body storehouse A and gas storehouse B opens gas bottle and first injects mesh into two closed gas storehouses A, B respectively
Then standard gas body opens vacuum pump and evacuates object gas, operate after draining air repeatedly, then passes through gas cylinder to gas storehouse
A, it is filled with object gas in B, and records the pressure and temperature numerical value of gas storehouse A and B at this time respectively；
(3) pipeline valve between gas storehouse A and gas storehouse B is opened, piston is pushed to press the gas in the A of gas storehouse completely
Enter into gas storehouse B, records the pressure and temperature value of gas storehouse B at this time；
(4) it is calculated by the following formula the volume to be measured of battery sample:
V0=V-PAPBTCV/(PCTATB-PBTATC)
Wherein, V0Indicate the volume to be measured of battery sample, V indicates the volume in gas storehouse, PA、PBRespectively indicate gas storehouse A and
Gas storehouse B is filled with pressure value when object gas, TA、TcRespectively indicate temperature when gas storehouse A and gas storehouse B is filled with object gas
Angle value, PCThe pressure value of recorded gas storehouse B, T after indicating in the gas indentation gas storehouse B in the A of gas storehouseCRespectively indicate gas
The temperature value of recorded gas storehouse B after in gas indentation gas storehouse B in the A of storehouse.
As a further improvement of the above technical scheme:
The object gas is hydrogen, nitrogen, oxygen, argon gas, any gas in helium or its mixing with arbitrary proportion
Close gas.
In the step, opening vacuum pump for object gas evacuation makes pressure 0.5-10kPa in gas storehouse, is filled with target
Pressure is 20-50kPa in gas storehouse A, B after gas.
The step, in, in test process between gas storehouse A and the temperature of gas storehouse B difference be no more than 2 DEG C, otherwise this
Secondary test result, which is considered as, unqualified need to retest.
As shown from the above technical solution, the detection device and its detection method phase of lithium ion battery volume of the present invention
Than traditional immersion method tested person ambient temperature conditions and liquid density variation condition do not influence, not by battery sample specification ruler
Very little limitation, it is simpler convenient to test；The equation for ideal gases that the present invention utilizes connects within the scope of lower pressure with actual conditions
Closely, test result and true value error are smaller, and test result is more acurrate.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention.
Specific embodiment
The present invention will be further described with reference to the accompanying drawing:
As shown in Figure 1, the detection device of the lithium ion battery volume of the present embodiment, including gas storehouse A and gas storehouse B, gas
Body storehouse A and gas storehouse B be connected tos with vacuum pump 2, gas cylinder 1 by the first pipeline, and pass through the between gas storehouse A and gas storehouse B
Two pipelines 9 are connected to, and are provided with valve on the first pipeline 5 and the second pipeline 9, are equipped with accurate gas on gas storehouse A and gas storehouse B
Pressure meter 3 and thermometer 4.Be equipped on gas storehouse A and gas storehouse B exclude in gas storehouse A and gas storehouse B the piston 7 of air and
Piston 8.Gas storehouse B is equipped with door, which can make gas storehouse B form a confined space in the off state.
The detection method of the detection device of the lithium ion battery volume of the present embodiment, comprising the following steps:
S1: being 0.5m by the gas cylinder for storing helium and vacuum pump and volume3Two gas storehouse A and B pass through pipeline
Connection, wherein closed gas storehouse A has movable piston, and closed gas storehouse B is openable to be put into battery sample, two gas storehouses
It can be fully sealed and be configured with microthermometer and pressure gauge, it is defeated to pass through pipeline valve folding control gas between two storehouses
It send；
S2: soft-package battery sample is put into the B of gas storehouse, and gas storehouse A, B is kept to be in air-tight state, closes gas storehouse
Pipeline valve between A and B opens gas bottle and first injects object gas into two closed gas storehouses A, B respectively, then opens
Vacuum pump is evacuated to 5kPa and is filled with helium into gas storehouse A, B three times hereinafter, operating repeatedly, records gas storehouse A and B at this time
Pressure and temperature numerical value PA、TAAnd PB、TB, the amount containing helium substance is denoted as n in gas storehouse A, BAAnd nB；
S3: opening pipeline valve in gas storehouse A, B, pushes piston that the gas in the A of gas storehouse is fully pressed into gas storehouse B
In, the pressure and temperature for recording gas storehouse B at this time is PC、TC, at this point, the amount containing helium substance is denoted as n in the B of gas storehouseA+
nB；
S4: it is calculated by the following formula the volume to be measured of battery sample:
According to equation for ideal gases it is found that
PAV=nARTA (1)
PB(V-V0)=nBRTB (2)
PC(V-V0)=nCRTC (3)
From above three equation solution:
V0=V-PAPBTCV/(PCTATB-PBTATC)
Wherein, V0Indicate the volume to be measured of battery sample, V indicates the volume in gas storehouse, PA、PBRespectively indicate gas storehouse A and
Gas storehouse B is filled with pressure value when object gas, TA、TcRespectively indicate temperature when gas storehouse A and gas storehouse B is filled with object gas
Angle value, PCThe pressure value of recorded gas storehouse B, T after indicating in the gas indentation gas storehouse B in the A of gas storehouseCRespectively indicate gas
The temperature value of recorded gas storehouse B after in gas indentation gas storehouse B in the A of storehouse；N indicates the amount of substance, and R indicates that perfect gas is normal
Number.
The object gas of the present embodiment can for hydrogen, nitrogen, oxygen, argon gas, any gas in helium or its with any
The mixed gas of ratio.
Using the detection device and detection method in of the present invention, flatulence after we shelve 60 DEG C of high temperature 7 days
NMC811/ graphite cell carries out volume test, and battery specifications include 50Ah soft-package battery, 30Ah aluminum hull rectangular cell and 20Ah
Aluminum shell column battery, test result is as follows table 1:
Table 1
As it can be seen from table 1 50Ah soft-package battery, 30Ah aluminum hull rectangular cell and 20Ah aluminum shell column battery high temperature are put
Volume after setting expansion is respectively 452,372 and 233 milliliters, and method can easily measure different size electricity in the present invention
Volume change after the expansion of pond sample, and test result is not related to liquid substance, not tested person environment temperature and fluid density
Variation influences.In addition, The Ideal-Gas Equation and real gas behavior are very close under the conditions of low voltage experiment, therefore this hair
Bright middle method calculated result consistency and accuracy are higher.
Embodiment described above only describe the preferred embodiments of the invention, not to model of the invention
It encloses and is defined, without departing from the spirit of the design of the present invention, those of ordinary skill in the art are to technical side of the invention
The various changes and improvements that case is made should all be fallen into the protection scope that claims of the present invention determines.
Claims (7)
1. a kind of detection device of lithium ion battery volume, it is characterised in that: including gas storehouse A and gas storehouse B, the gas storehouse
A is connected to vacuum pump, gas cylinder with gas storehouse B by the first pipeline, and passes through the second pipeline between gas storehouse A and gas storehouse B
It is connected to, is provided with valve on first pipeline and the second pipeline, is equipped with accurate gas on the gas storehouse A and gas storehouse B
Pressure meter and thermometer.
2. the detection device of lithium ion battery volume according to claim 1, it is characterised in that: the gas storehouse A and gas
The piston for excluding air in gas storehouse A and gas storehouse B is equipped on the B of body storehouse.
3. the detection device of lithium ion battery volume according to claim 1, it is characterised in that: set on the gas storehouse B
There is door, which can make gas storehouse B form a confined space in the off state.
4. a kind of detection method of the detection device of lithium ion battery volume, which comprises the following steps:
(1) gas cylinder, vacuum pump and gas storehouse A and B that store object gas are connected by pipeline, wherein closed gas storehouse A
With movable piston, closed gas storehouse B is openable to be put into battery sample, and two gas storehouses can be fully sealed and be configured with
Microthermometer and pressure gauge are conveyed by pipeline valve folding control gas between two storehouses；
(2) mesuring battary sample is put into the B of gas storehouse, gas storehouse A and gas storehouse B is kept to be in air-tight state, close gas
Pipeline valve between body storehouse A and gas storehouse B opens gas bottle and first injects target gas into two closed gas storehouses A, B respectively
Then body opens vacuum pump and evacuates object gas, operate after draining air repeatedly, then passes through gas cylinder to gas storehouse A, B
In be filled with object gas, and record the pressure and temperature numerical value of gas storehouse A and B at this time respectively；
(3) pipeline valve between gas storehouse A and gas storehouse B is opened, piston is pushed to be fully pressed into the gas in the A of gas storehouse
In the B of gas storehouse, the pressure and temperature value of gas storehouse B at this time is recorded；
(4) it is calculated by the following formula the volume to be measured of battery sample:
V0=V-PAPBTCV/(PCTATB-PBTATC)
Wherein, V0Indicate the volume to be measured of battery sample, V indicates the volume in gas storehouse, PA、PBRespectively indicate gas storehouse A and gas
Storehouse B is filled with pressure value when object gas, TA、TcTemperature value when gas storehouse A and gas storehouse B is filled with object gas is respectively indicated,
PCThe pressure value of recorded gas storehouse B, T after indicating in the gas indentation gas storehouse B in the A of gas storehouseCIt respectively indicates in the A of gas storehouse
Gas indentation gas storehouse B in after recorded gas storehouse B temperature value.
5. the detection method of the detection device of lithium ion battery volume according to claim 4, it is characterised in that: the mesh
Standard gas body be hydrogen, nitrogen, oxygen, argon gas, any gas in helium or its with the mixed gas of arbitrary proportion.
6. the detection method of the detection device of lithium ion battery volume according to claim 4, it is characterised in that: the step
Suddenly in (2), opening vacuum pump for object gas evacuation makes pressure 0.5-10kPa in gas storehouse, is filled with gas after object gas
Pressure is 20-50kPa in storehouse A, B.
7. the detection method of the detection device of lithium ion battery volume according to claim 4, it is characterised in that: the step
Suddenly (2), in (3), difference is no more than 2 DEG C between gas storehouse A and the temperature of gas storehouse B in test process, otherwise this test knot
Fruit, which is considered as, unqualified need to retest.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201810633310.5A CN108931280A (en) | 2018-06-19 | 2018-06-19 | A kind of detection device and its detection method of lithium ion battery volume |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810633310.5A CN108931280A (en) | 2018-06-19 | 2018-06-19 | A kind of detection device and its detection method of lithium ion battery volume |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610886A (en) * | 2020-12-04 | 2021-04-06 | 沈阳航天新光集团有限公司 | Storage tank volume measuring trolley and using method |
| CN114221046A (en) * | 2021-11-16 | 2022-03-22 | 天津力神电池股份有限公司 | Method for testing residual space volume in hard-shell lithium ion battery |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5920814A (en) * | 1982-07-28 | 1984-02-02 | Shimadzu Corp | Method and apparatus for measuring volume |
| CN101685031A (en) * | 2008-09-24 | 2010-03-31 | 上海比亚迪有限公司 | Method for measuring lithium battery interior gas amount |
| CN102156020A (en) * | 2011-03-28 | 2011-08-17 | 同济大学 | Method and device of fuel cell system for estimating hydrogen residual pressure of hydrogen bottle |
| CN102297818A (en) * | 2010-06-28 | 2011-12-28 | 中国石油化工股份有限公司 | System and method for measuring true density of powder sample in absence of water and oxygen |
| CN106769689A (en) * | 2017-01-05 | 2017-05-31 | 西安交通大学 | The measurement apparatus and method of gas diffusion coefficient in a liquid under a kind of variable volume constant pressure |
| CN206488826U (en) * | 2017-02-07 | 2017-09-12 | 万向一二三股份公司 | A kind of soft-package battery volume measurement device |
-
2018
- 2018-06-19 CN CN201810633310.5A patent/CN108931280A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5920814A (en) * | 1982-07-28 | 1984-02-02 | Shimadzu Corp | Method and apparatus for measuring volume |
| CN101685031A (en) * | 2008-09-24 | 2010-03-31 | 上海比亚迪有限公司 | Method for measuring lithium battery interior gas amount |
| CN102297818A (en) * | 2010-06-28 | 2011-12-28 | 中国石油化工股份有限公司 | System and method for measuring true density of powder sample in absence of water and oxygen |
| CN102156020A (en) * | 2011-03-28 | 2011-08-17 | 同济大学 | Method and device of fuel cell system for estimating hydrogen residual pressure of hydrogen bottle |
| CN106769689A (en) * | 2017-01-05 | 2017-05-31 | 西安交通大学 | The measurement apparatus and method of gas diffusion coefficient in a liquid under a kind of variable volume constant pressure |
| CN206488826U (en) * | 2017-02-07 | 2017-09-12 | 万向一二三股份公司 | A kind of soft-package battery volume measurement device |
Non-Patent Citations (1)
| Title |
|---|
| 傅强军等: "《"3+2"高考必读物理》", 31 August 1995, 武汉出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112610886A (en) * | 2020-12-04 | 2021-04-06 | 沈阳航天新光集团有限公司 | Storage tank volume measuring trolley and using method |
| CN114221046A (en) * | 2021-11-16 | 2022-03-22 | 天津力神电池股份有限公司 | Method for testing residual space volume in hard-shell lithium ion battery |
| CN114221046B (en) * | 2021-11-16 | 2023-08-25 | 天津力神电池股份有限公司 | Method for testing residual space volume in hard shell lithium ion battery |
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Application publication date: 20181204 |