CN107589376A - The deep pressure battery performance test device in the full sea of simulation and method - Google Patents
The deep pressure battery performance test device in the full sea of simulation and method Download PDFInfo
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- CN107589376A CN107589376A CN201710678845.XA CN201710678845A CN107589376A CN 107589376 A CN107589376 A CN 107589376A CN 201710678845 A CN201710678845 A CN 201710678845A CN 107589376 A CN107589376 A CN 107589376A
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Abstract
The deep pressure battery performance test device in the full sea of one kind simulation and method, including：Cast iron pressure vessel, pressing mechanism and Soft Roll ferric phosphate lithium cell, dielectric and the sensing mechanism to be measured being arranged inside cast iron pressure vessel.Cast iron pressure vessel includes：Pressurized tank with pressure gauge and relief valve, wherein：Circuit plug receptacle, pressure gauge and pressure pipeline plug receptacle are provided with the top of pressure-resistant 140Mpa cast iron pressure vessel.The present invention can simulate the complete deep environment in sea under 100MPa pressure and low temperature, and the ferric phosphate lithium cell maximum of less stable can be pressurized to 100MPa, test the situation of change of benthoscope cell electrical parameters with depth.
Description
Technical field
The present invention relates to a kind of technology in battery testing field, is specifically under a kind of complete deep 100Mpa pressure in sea of simulation
Soft Roll ferric phosphate lithium cell performance testing device and method.
Background technology
During in order to improve bathyscaph continuation of the journey, current development trend is no longer Li-ion batteries piles to be placed on heavy resistance to pressure-volume
In device, and Li-ion batteries piles are arranged in lighter oil-filled type pressure compensation case.This has resulted in battery pack building ring
Temperature, the pressure in border can change with submerged depth occurs acute variation, has stronger influence to cell electrical characteristic.Battery electricity
Gas characteristic research provides foundation and necessary condition to establish battery management system, to ensure the security of bathyscaph and economy tool
It is significant.The basic blank of the current research both domestic and external to battery test apparatus under abyssal environment and method of testing, phosphoric acid
Dependence test of the lithium iron battery under a myriametre depth of water environment was also never carried out.
The content of the invention
The present invention proposes a kind of deep pressure battery performance test device in the full sea of simulation and method, can simulate 100MPa pressures
The complete deep environment in sea under power and low temperature, and the ferric phosphate lithium cell maximum of less stable can be pressurized to 100MPa, test
The situation of change of benthoscope cell electrical parameters with depth.
The present invention is achieved by the following technical solutions：
The present invention relates to one kind to simulate battery performance test device under the complete deep pressure in sea, including：Cast iron pressure vessel, pressurization
Mechanism and Soft Roll ferric phosphate lithium cell, dielectric and the sensing mechanism to be measured being arranged inside cast iron pressure vessel.
Described cast iron pressure vessel includes：Pressurized tank with pressure gauge and relief valve, wherein：Pressure-resistant 140Mpa casting
Circuit plug receptacle, pressure gauge and pressure pipeline plug receptacle are provided with the top of iron pressure vessel.
Described pressing mechanism includes：Manual pressurization pump, pressure duct, pipeline plug receptacle, wherein：Manual pressurization pump enters
One step ins and outs：Pressure capacity for compression bar piston type force (forcing) pump and is provided with relief valve up to 140MPa force (forcing) pump.
Described sensing mechanism includes：Thermodynamics detector and electrical detectors, wherein：Thermodynamics detector is arranged at casting
Iron pressure vessel outer wall is simultaneously connected with test module and exports thermodynamics detection information, the both ends of electrical detectors respectively with it is to be measured
Soft Roll ferric phosphate lithium cell is connected with test module and output voltage current analog signal.
Described thermodynamics detector includes some thermocouples and the accessory channel being attached thereto respectively, wherein：Auxiliary is logical
Road gathers the voltage analog signal from thermocouple both ends and analog signal is changed into data signal.
Described electrical detectors include：It is arranged inside cast iron pressure vessel and is connected respectively with both positive and negative polarity to be measured
Electrode and outside the cast iron pressure vessel and the battery testing platform that is connected with electrode, wherein：Battery testing platform passes through
Electrode gathers the voltage and current analog signal of battery.
Described dielectric is preferably insulating oil.
The present invention relates to the method for testing pressure of said apparatus, comprise the following steps：
Step 1) builds battery performance test device under the complete deep pressure in sea of simulation：After battery pole ear and electrode are connected,
It will be sealed with PUR at lug；With milliohmmeter measure traverse line resistance；Battery is vented before applied voltage test is carried out.
Step 2) is filled while carrying out staged pressurization to cast iron pressure vessel to Soft Roll ferric phosphate lithium cell to be measured
Discharge test.
To be measured Soft Roll ferric phosphate lithium cell of the step 3) in the state of simulation deep sea pressure is kept to being pressurizeed through staged
Electric test is carried out, is specifically included：
3.1) 1.5h is stood after battery is full of, carries out HPPC tests every 10%SOC, while take between SOC points most
Voltage is stood afterwards calculates OCV-SOC curves.
3.2) 1.5h is stood after battery is full of, carries out DST working condition measurements.
3.3) 1.5h is stood after battery is full of, carries out maximum capacity and discharge-rate test.
3.4) slowly pressure release to normal pressure and detects battery outward appearance.
Technique effect
The present invention first it has been proposed that a kind of system, safe, the effective complete deep battery pressure method in sea and experiment
Device, experimental method reference can be provided for bathyscaph cell system design personnel；Formula normal pressure can only be surveyed with existing measuring technology
Lower cell electrical characteristic is compared, and the present invention can be used for changing rule of the research cell electrical characteristic with pressure；Demonstrate Soft Roll phosphorus
Sour lithium iron battery possesses the ability of the normal work under ten thousand metres depth of water environment.
Brief description of the drawings
Fig. 1 is present system schematic diagram；
In figure：1 host computer, 2 battery testing platforms, 3 accessory channels, 4 thermocouples, 5 potted circuit plug receptacles, 6 pressure gauges,
7 pressurized canister, 8 valves, 9 pressure pipeline interfaces, 10 circuit plugs, 11 insulating oils, 12 battery pole ears, 13 bolts, 14 Soft Roll phosphoric acid
Lithium iron battery, 15 relief valves, 16 Manual pressurization pumps.
Embodiment
The present embodiment experimental facilities uses electrokinetic cell equipment, milliohmmeter, 100MPa pressure tests bucket, manual pressure
Pump；Test object is 3AH lithium iron phosphate flexible package batteries；Test temperature is 20 DEG C and 3 DEG C；Test pressure is 0.1MPa-100Mpa.
Present apparatus structure is as shown in Figure 1：Cast iron pressure vessel 7 passes through valve 8, pressure pipeline interface 9 with pressing mechanism 16
It is connected with pressure duct.Test battery pole ear 12 and pass through the circuit plug 10 at the top of bolt 13 and cast iron pressure vessel and sealing
Socket 5 is connected, and plug 10 is connected by wire with battery testing platform 2.Thermocouple 4 is arranged in cast iron Surface Pressure Vessel,
It is connected with accessory channel 3.Battery testing platform, communication is realized with host computer by connecting accessory channel.
The present embodiment comprises the following steps：
Step 1. builds battery performance test device under the complete deep pressure in sea of simulation：After battery pole ear and electrode are connected,
It will be sealed with PUR at lug；With milliohmmeter measure traverse line resistance；Battery is vented before applied voltage test is carried out.
Step 2. battery staged is pressurizeed：
2.1) insulating oil will be filled in cast iron pressure vessel.
2.2) pressure gauge number is observed with Manual pressurization pump to provide that insulating oil is pressed into cast iron pressure vessel by compression rate
Value, after pressure reaches the dwell pressure of setting, stand the stipulated time.Then the test of charge and discharge in short-term is being done to battery, and it is quiet again
Put the stipulated time.
2.3) it steps be repeated alternatively until that pressure reaches 100MPa.
2.4) battery extends time of repose after being pressurized to 100MPa, and the test of charge and discharge in short-term is then done to battery, then for a long time
Stand, record cell voltage change.
If 2.5) internal short-circuit does not occur for battery, electrical characteristics test is carried out, if going wrong, is taken out after pressure release
Battery is checked.
Step 3.HPPC is tested：
3.1) since 100%SOC, following test is carried out every 10%SOC：
The 10s 1. 2C discharges, stands 40s.
The 10s 2. 0.5C charges, stands 10s.
3. 0.5C is discharged to next SOC points, 1h30min is stood.
4. repeat step 1-3 totally 9 times, record voltage, the current value of each sampling instant.
3.2) 1min is stood, is vented battery with 0.1C electric currents.
Step 4.DST operating modes：
Since 100%SOC, terminate to test after carrying out several DST circulations according to following sequence of currents：
Step 5. maximum capacity and multiplying power test：
Circulation discharge test is proceeded by from 100%SOC, is specially：
1. according to constant current 1C, battery is full of by 3.65V constant pressures to electric current less than 0.01C, stands 1min.
The 1min 2. 1.5C discharges, stands 10s, repeats the step to blanking voltage, otherwise into step 3..
The 1min 3. 1C discharges, stands 10s, repeats the step to blanking voltage, otherwise into step 4..
The 1min 4. 0.5C discharges, stands 10s, repeats the step to blanking voltage, otherwise into step 5..
The 1min 5. 0.2C discharges, stands 10s, repeats the step to blanking voltage, otherwise into step 6..
The 1min 6. 0.1C discharges, stands 10s, repeats the step to blanking voltage, otherwise into step 7..
The 1min 7. 0.05C discharges, stands 10s, repeats the step to blanking voltage, otherwise into step 8..
The 5min 8. 0.02C discharges, stands 30s, repeats the step and battery is vented to blanking voltage.
Above-mentioned specific implementation can by those skilled in the art on the premise of without departing substantially from the principle of the invention and objective with difference
Mode local directed complete set is carried out to it, protection scope of the present invention is defined by claims and not by above-mentioned specific implementation institute
Limit, each implementation in the range of it is by the constraint of the present invention.
Claims (7)
1. battery performance test device under the complete deep pressure in sea of one kind simulation, it is characterised in that including：Cast iron pressure vessel, pressurization
Mechanism and Soft Roll ferric phosphate lithium cell, dielectric and the sensing mechanism to be measured being arranged inside cast iron pressure vessel；
Described cast iron pressure vessel includes：Pressurized tank with pressure gauge and relief valve, wherein：Pressure-resistant 140Mpa cast iron pressure
Circuit plug receptacle, pressure gauge and pressure pipeline plug receptacle are provided with the top of force container.
2. device according to claim 1, it is characterized in that, described pressing mechanism includes：Manual pressurization pump, high-voltage tube
Road, pipeline plug receptacle, wherein：Pressure capacity for compression bar piston type force (forcing) pump and is provided with relief valve up to 140Mpa force (forcing) pump.
3. device according to claim 1, it is characterized in that, described sensing mechanism includes：Thermodynamics detector and electricity
Detector, wherein：Thermodynamics detector is arranged at cast iron pressure vessel outer wall and is connected with test module and exports thermodynamics and examines
Measurement information, the both ends of electrical detectors are connected respectively with Soft Roll ferric phosphate lithium cell to be measured and test module and output voltage electric current
Analog signal.
4. device according to claim 1, it is characterized in that, described thermodynamics detector includes some thermocouples and difference
The accessory channel being attached thereto, wherein：Accessory channel gathers the voltage analog signal from thermocouple both ends and by analog signal
Change into data signal.
5. device according to claim 1, it is characterized in that, described electrical detectors include：It is arranged at cast iron pressure appearance
The electrode that is connected respectively inside device and with both positive and negative polarity to be measured and positioned at cast iron pressure vessel outside and the electricity being connected with electrode
Pond test platform, wherein：Battery testing platform gathers the voltage and current analog signal of battery by electrode.
6. device according to claim 1, it is characterized in that, described dielectric is insulating oil.
7. a kind of method for testing pressure according to any of the above-described claim described device, it is characterised in that comprise the following steps：
Step 1) builds battery performance test device under the complete deep pressure in sea of simulation：After battery pole ear and electrode are connected, with heat
Melten gel will seal at lug；With milliohmmeter measure traverse line resistance；Battery is vented before applied voltage test is carried out；
Discharge and recharge is carried out to Soft Roll ferric phosphate lithium cell to be measured while step 2) carries out staged pressurization to cast iron pressure vessel
Test；
Step 3) is carried out in the state of simulation deep sea pressure is kept to the Soft Roll ferric phosphate lithium cell to be measured to be pressurizeed through staged
Electric test, specifically include：
3.1) 1.5h is stood after battery is full of, HPPC tests are carried out every 10%SOC, while is taken last quiet between SOC points
Put voltage and calculate OCV-SOC curves；
3.2) 1.5h is stood after battery is full of, carries out DST working condition measurements；
3.3) 1.5h is stood after battery is full of, carries out maximum capacity and discharge-rate test；
3.4) slowly pressure release to normal pressure and detects battery outward appearance.
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| CN107389464A (en) * | 2017-08-25 | 2017-11-24 | 北京新能源汽车股份有限公司 | Battery bag immersion water test equipment |
| CN108489816A (en) * | 2018-03-16 | 2018-09-04 | 恺信国际检测认证有限公司 | A kind of depth of water compression testing device and application method |
| CN108593010A (en) * | 2018-06-28 | 2018-09-28 | 中国电子科技集团公司第二十二研究所 | Cell Experimentation An tooling |
| CN109581230A (en) * | 2018-11-27 | 2019-04-05 | 上海理工大学 | Soft-package battery outer surface constant pressure that compressed gas is adjustable pre-tightens test device and method |
| CN110260926A (en) * | 2019-07-16 | 2019-09-20 | 中国船舶科学研究中心（中国船舶重工集团公司第七0二研究所） | Deep sea manned submersible energy resource supply intelligent monitoring and protection system |
| CN111025152A (en) * | 2019-11-27 | 2020-04-17 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Method for testing voltage withstanding performance of lithium ion battery |
| CN111077451A (en) * | 2019-11-27 | 2020-04-28 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Lithium ion battery voltage withstanding test method |
| CN111090052A (en) * | 2019-11-27 | 2020-05-01 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Method for detecting burrs of pole group of reserve lithium battery |
| CN111112148A (en) * | 2019-11-27 | 2020-05-08 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Batch voltage-withstanding screening method for lithium ion batteries |
| CN112414654A (en) * | 2019-08-22 | 2021-02-26 | 天津大学青岛海洋技术研究院 | Test device for simulating deep sea constant pressure state |
| CN113253021A (en) * | 2021-04-30 | 2021-08-13 | 西安交通大学 | Battery testing device and method for simulating ocean low temperature and water flow |
| CN113917339A (en) * | 2021-09-14 | 2022-01-11 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | In-situ nondestructive testing method for internal health characteristics of large-depth pressure-resistant lithium battery |
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| CN112414654A (en) * | 2019-08-22 | 2021-02-26 | 天津大学青岛海洋技术研究院 | Test device for simulating deep sea constant pressure state |
| CN111090052A (en) * | 2019-11-27 | 2020-05-01 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Method for detecting burrs of pole group of reserve lithium battery |
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| CN111077451A (en) * | 2019-11-27 | 2020-04-28 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Lithium ion battery voltage withstanding test method |
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| CN111112148B (en) * | 2019-11-27 | 2022-02-18 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Batch voltage-withstanding screening method for lithium ion batteries |
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| CN111077451B (en) * | 2019-11-27 | 2022-05-13 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Lithium ion battery voltage withstanding test method |
| CN113253021A (en) * | 2021-04-30 | 2021-08-13 | 西安交通大学 | Battery testing device and method for simulating ocean low temperature and water flow |
| CN113253021B (en) * | 2021-04-30 | 2022-06-07 | 西安交通大学 | Battery testing device and method for simulating ocean low temperature and water flow |
| CN113917339A (en) * | 2021-09-14 | 2022-01-11 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | In-situ nondestructive testing method for internal health characteristics of large-depth pressure-resistant lithium battery |
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