CN106443483B - A kind of pulse cycle life testing method of nickel-metal hydride battery for electric vehicle - Google Patents
A kind of pulse cycle life testing method of nickel-metal hydride battery for electric vehicle Download PDFInfo
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- CN106443483B CN106443483B CN201610975942.0A CN201610975942A CN106443483B CN 106443483 B CN106443483 B CN 106443483B CN 201610975942 A CN201610975942 A CN 201610975942A CN 106443483 B CN106443483 B CN 106443483B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/36—Arrangements for testing, measuring or monitoring the electrical condition of accumulators or electric batteries, e.g. capacity or state of charge [SoC]
- G01R31/392—Determining battery ageing or deterioration, e.g. state of health
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Abstract
The invention discloses a kind of pulse cycle life testing methods of nickel-metal hydride battery for electric vehicle, comprising: one, carry out putting remnants to battery；Two, volume test is carried out to battery；Three, DC internal resistance is tested；Four, battery is carried out putting remnants；Five, cycle charging；Six, circulation electric discharge；Seven, cycle charging；Eight, circulation electric discharge；Nine, circulation step seven, 8 100 times；Ten, battery is carried out putting remnants；11, DC internal resistance is tested；12, battery is carried out putting remnants；13, volume test is carried out to battery；14, DC internal resistance is tested；15, battery is carried out putting remnants, completes test.The present invention has rational design, design is rigorous, test result precision is high, efficiently solve the problems, such as existing batteries of electric automobile pulse cycle life test test mode there are test result precision that low, inefficiency, cost input are high and without improving moisture electrolysis etc. in electrolyte, thus it is suitable for popularization and application.
Description
Technical field
The present invention relates to a kind of test methods, and in particular to be a kind of nickel-metal hydride battery for electric vehicle the pulse cycle longevity
Order test method.
Background technique
Electric car in actual operation, either climbing acceleration, down hill braking, emergency brake or frequent start-stop, height
The complex working conditions such as warm environment operation can all generate pulse current and impact to battery, rather than stable single constant-current charge or
Discharge condition.Therefore, it is necessary to the nickel-metal hydride battery to electric car carries out pulse cycle life test, it can to grasp it in time
The case where charging and discharging capabilities and service life.
However, existing test method is due to being difficult to the complex working condition of real simulation electric car in actual operation, institute
To be to put based on theoretic test method and have no much reference values in practical applications, not only test out mostly
Theoretical life value is much larger than the actual life of battery, and error is larger, and existing test method completes a test week
The time that phase needs is very long, thus not only testing efficiency is low, and cost input is higher.
In addition, the charging modes of battery are since the electrolysis to water in alleviation electrolyte is without bright in existing test method
Aobvious improvement result, thus it is also easy to the problems such as battery drum shell, available capacity reduction occur after the long or short period.
Therefore, it is necessary to be improved to existing nickel-metal hydride battery life testing method for electric vehicle.
Summary of the invention
The purpose of the present invention is to provide a kind of pulse cycle life testing methods of nickel-metal hydride battery for electric vehicle, mainly
Solve existing battery for electric automobile life test mode there are test result precision low, inefficiency, cost input it is high and
Without the problem for improving moisture electrolysis etc. in electrolyte.
To achieve the goals above, The technical solution adopted by the invention is as follows:
A kind of pulse cycle life testing method of nickel-metal hydride battery for electric vehicle, comprising the following steps:
One, battery is carried out putting remnants
1min is shelved, constant-current discharge is carried out under conditions of being then 1 times in multiplying power to monomer 1V, until being discharged, then
10min is shelved again；
Two, volume test is carried out to battery
(1) to constant-current charging of battery 3h under conditions of being 0.3333 times in multiplying power, until its total capacity reaches specified
100%, protect restrictive condition: voltage: 1.65V, temperature: 45 DEG C；Then then at multiplying power be 0.05 times under conditions of to battery perseverance
Current charge 2h protects restrictive condition: voltage: 1.65V, temperature: 45 DEG C until its total capacity reaches specified 110%；
(2) 1h is shelved, constant-current discharge is carried out under conditions of being then 1 times in multiplying power to monomer 1V, until being discharged, then
10min is shelved again；
Three, DC internal resistance is tested
(1) it to constant-current charging of battery 30min under conditions of being 1 times in multiplying power, until its total capacity reaches specified 50%, protects
Protect restrictive condition: voltage: 1.65V, temperature: 45 DEG C；Then 30min is shelved；
(2) to constant-current charging of battery 10s under conditions of being 0.5 times in multiplying power, restrictive condition: voltage: 1.65V, temperature are protected
Degree: 45 DEG C；Then 10min is shelved；
(3) constant-current discharge 10s under conditions of being 0.5 times in multiplying power, protect restrictive condition: voltage: then 1V is shelved
10min；
(4) to constant-current charging of battery 10s under conditions of being 1 times in multiplying power, restrictive condition: voltage: 1.65V is protected, temperature:
45℃；Then 10min is shelved；
(5) constant-current discharge 10s under conditions of being 1 times in multiplying power, protect restrictive condition: voltage: then 1V shelves 10min；
(6) to constant-current charging of battery 10s under conditions of being 2 times in multiplying power, restrictive condition: voltage: 1.65V is protected, temperature:
45℃；Then 10min is shelved；
(7) constant-current discharge 10s under conditions of being 2 times in multiplying power, protect restrictive condition: voltage: then 1V shelves 10min；
(8) to constant-current charging of battery 10s under conditions of being 4 times in multiplying power, restrictive condition: voltage: 1.65V is protected, temperature:
45℃；Then 10min is shelved；
(9) constant-current discharge 10s under conditions of being 4 times in multiplying power, protect restrictive condition: voltage: then 1V shelves 10min；
Four, battery is carried out putting remnants
Constant-current discharge, which is carried out, under conditions of being 1 times in multiplying power then shelves 10min until being discharged to monomer 1V；
Five, cycle charging
(1) to constant-current charging of battery 10s under conditions of being 3 times in multiplying power, restrictive condition: voltage: 1.65V is protected, temperature:
45℃；Then 6s is shelved；
(2) to constant-current charging of battery 30s under conditions of being 3 times in multiplying power, restrictive condition: voltage: 1.65V is protected, temperature:
45℃；Then 18s is shelved；
(3) circulation step (1), (2) two ten four times；
(4) to constant-current charging of battery 5s under conditions of being 3 times in multiplying power, restrictive condition: voltage: 1.65V is protected, temperature:
45℃；Then 23s is shelved；
Six, circulation electric discharge
(1) constant-current discharge 10s under conditions of being 3 times in multiplying power, protect restrictive condition: voltage: then 1.1V shelves 6s；
(2) constant-current discharge 30s under conditions of being 3 times in multiplying power, protect restrictive condition: voltage: then 1.1V shelves 18s；
(3) circulation step (1), (2) ten eight times, shelve 20s again after circulation；
Seven, cycle charging
(1) to constant-current charging of battery 10s under conditions of being 3 times in multiplying power, restrictive condition: voltage: 1.65V is protected, temperature:
45℃；Then 6s is shelved；
(2) to constant-current charging of battery 30s under conditions of being 3 times in multiplying power, restrictive condition: voltage: 1.65V is protected, temperature:
45℃；Then 18s is shelved；
(3) circulation step (1), (2) ten eight times；
(4) to constant-current charging of battery 5s under conditions of being 3 times in multiplying power, restrictive condition: voltage: 1.65V is protected, temperature:
45℃；Shelve 17s；
Eight, circulation electric discharge
(1) constant-current discharge 10s under conditions of being 3 times in multiplying power, protect restrictive condition: voltage: then 1.1V shelves 6s；
(2) constant-current discharge 30s under conditions of being 3 times in multiplying power, protect restrictive condition: voltage: then 1.1V shelves 18s；
(3) circulation step (1), (2) ten eight times, shelve 14s again after circulation；
Nine, circulation step seven, 8 100 times；
Ten, battery is carried out putting remnants
10min is shelved, constant-current discharge is carried out under conditions of being then 1 times in multiplying power to monomer 1V, until being discharged, then
10min is shelved again；
11, DC internal resistance test is carried out to battery in the way of step 3, and to battery in the way of step 4
It carries out putting remnants；
12, volume test is carried out to battery in the way of step 2；
13, continue to carry out DC internal resistance test to battery in the way of step 3, and in the way of step 4 pair
Battery carries out putting remnants, completes test.
Further, in all steps, battery limits item in the protection that inner pressure of battery is 0.3MPa in constant-current charge
It is carried out under part.
Compared with prior art, the invention has the following advantages:
(1) the present invention has rational design, design is rigorous, test result precision is high, by reasonable parameter designing, and uses
Intermittent pulse charging manner, so that electric car can be simulated in actual condition (frequent starting, acceleration, brake, stopping
Deng) under, the use state of the frequent switching of feedback charging and pulsed discharge, and when battery can be made to have more sufficient chemical reaction
Between, alleviate and reduce the amount of precipitation of oxygen and hydrogen, prevents the reduction rate of battery available capacity, and then reduce side reaction pair
The damage of battery improves battery to the acceptable ability of charging and discharging currents.The present invention tests electricity compared to assembling electric car
For the mode of pond performance of operating condition, without huge number of batteries and workload, and test period is shorter that (experiment shows every 100
Secondary circulation only needs 2.74 days), thus it has been significantly reduced the investment of cost of human and material resources.
(2) present invention when to constant-current charging of battery, in protection temperature be 45 DEG C, the subsidiary conditions that pressure is 0.3MPa
Lower progress so can smoothly make battery be filled with electric energy, and further ensure the accuracy of test.
(3) test result of the invention is utilized, inside battery structure can be modeled and be divided in conjunction with emulation technology
Analysis, to optimize battery formula, technique and electrode material, and then can gradually improve and meet electric car to nickel-metal hydride battery
The requirement of power source performance.
Specific embodiment
Below with reference to embodiment, the invention will be further described, and embodiments of the present invention include but is not limited to following reality
Apply example.
Embodiment
The present invention provides a kind of pulse cycle life testing methods suitable for nickel-metal hydride battery for electric vehicle, main
In such a way that battery repeatedly puts remaining and intermittent pulse charge and discharge, simulated battery runs on actual condition in electric car
Under the premise of, frequent starting, acceleration, brake, stopping charge and discharge process, then test out the service life of its pulse cycle.Of the invention
Testing procedure can be as shown in following table:
Remarks:
(1) when the 87th step volume test result is lower than specified value, stop loop test.
(2) test method SOC of the present invention is recycled between 20%~80%.
Above-mentioned work step 29~60 completes 100 used time 65.76h.
According to test mode described in above table, the survey to the electric car nickel-metal hydride battery pulse cycle service life can be completed
Examination.
The present invention changes loop test by the DC internal resistance of comparison front and back several times can be to battery in conjunction with emulation technology
Internal structure is modeled and is analyzed, to optimize battery formula, technique and electrode material, and then gradually can be improved and be met
Requirement of the electric car to the power source performance of nickel-metal hydride battery.Charging and discharging currents of the present invention are big, and single time is short, i.e., with the shape of pulse
Formula simulates real vehicle operating condition, thus improve life test data real effectiveness and battery it is suitable to the impact of positive negative impulse current
It should be able to power.And pulse charge and discharge, battery reduces battery drum shell because gassing situation weakens, available capacity reduces the series such as fast
Problem greatly improves the safety of battery.Therefore, the present invention is very suitable to for the pulse to nickel-metal hydride battery for electric vehicle
Cycle life is tested.
According to above-described embodiment, the present invention can be realized well.It is worth noting that being based on above system structure and side
Under the premise of method designs, to solve same technical problem, even if made in the present invention again it is some have no substantive changes or
Polishing, the essence of used technical solution should all be included in protection scope of the present invention still as the present invention
Within.
Claims (2)
1. a kind of pulse cycle life testing method of nickel-metal hydride battery for electric vehicle, which comprises the following steps:
One, battery is carried out putting remnants
1min is shelved, constant-current discharge is carried out under conditions of being then 1 times in multiplying power and is then put again to monomer 1V until being discharged
Set 10min；
Two, volume test is carried out to battery
(1) it to constant-current charging of battery 3h under conditions of being 0.3333 times in multiplying power, until its total capacity reaches specified 100%, protects
Protect restrictive condition: voltage: 1.65V, temperature: 45 DEG C；Then then at multiplying power be 0.05 times under conditions of to constant-current charging of battery 2h,
Until its total capacity reaches specified 110%, restrictive condition: voltage: 1.65V, temperature: 45 DEG C is protected；
(2) 1h is shelved, constant-current discharge is carried out under conditions of being then 1 times in multiplying power and is then put again to monomer 1V until being discharged
Set 10min；
Three, DC internal resistance is tested
(1) to constant-current charging of battery 30min under conditions of being 1 times in multiplying power, until its total capacity reaches specified 50%, protection limit
Condition processed: voltage: 1.65V, temperature: 45 DEG C；Then 30min is shelved；
(2) to constant-current charging of battery 10s under conditions of being 0.5 times in multiplying power, restrictive condition: voltage: 1.65V, temperature: 45 is protected
℃；Then 10min is shelved；
(3) constant-current discharge 10s under conditions of being 0.5 times in multiplying power, protect restrictive condition: voltage: then 1V shelves 10min；
(4) to constant-current charging of battery 10s under conditions of being 1 times in multiplying power, restrictive condition: voltage: 1.65V, temperature: 45 is protected
℃；Then 10min is shelved；
(5) constant-current discharge 10s under conditions of being 1 times in multiplying power, protect restrictive condition: voltage: then 1V shelves 10min；
(6) to constant-current charging of battery 10s under conditions of being 2 times in multiplying power, restrictive condition: voltage: 1.65V, temperature: 45 is protected
℃；Then 10min is shelved；
(7) constant-current discharge 10s under conditions of being 2 times in multiplying power, protect restrictive condition: voltage: then 1V shelves 10min；
(8) to constant-current charging of battery 10s under conditions of being 4 times in multiplying power, restrictive condition: voltage: 1.65V, temperature: 45 is protected
℃；Then 10min is shelved；
(9) constant-current discharge 10s under conditions of being 4 times in multiplying power, protect restrictive condition: voltage: then 1V shelves 10min；
Four, battery is carried out putting remnants
Constant-current discharge, which is carried out, under conditions of being 1 times in multiplying power then shelves 10min until being discharged to monomer 1V；
Five, cycle charging
(1) to constant-current charging of battery 10s under conditions of being 3 times in multiplying power, restrictive condition: voltage: 1.65V, temperature: 45 is protected
℃；Then 6s is shelved；
(2) to constant-current charging of battery 30s under conditions of being 3 times in multiplying power, restrictive condition: voltage: 1.65V, temperature: 45 is protected
℃；Then 18s is shelved；
(3) circulation step (1) and (2) two ten four times；
(4) to constant-current charging of battery 5s under conditions of being 3 times in multiplying power, restrictive condition: voltage: 1.65V, temperature: 45 DEG C is protected；
Then 23s is shelved；
Six, circulation electric discharge
(1) constant-current discharge 10s under conditions of being 3 times in multiplying power, protect restrictive condition: voltage: then 1.1V shelves 6s；
(2) constant-current discharge 30s under conditions of being 3 times in multiplying power, protect restrictive condition: voltage: then 1.1V shelves 18s；
(3) circulation step (1) and (2) ten eight times, shelve 20s again after circulation；
Seven, cycle charging
(1) to constant-current charging of battery 10s under conditions of being 3 times in multiplying power, restrictive condition: voltage: 1.65V, temperature: 45 is protected
℃；Then 6s is shelved；
(2) to constant-current charging of battery 30s under conditions of being 3 times in multiplying power, restrictive condition: voltage: 1.65V, temperature: 45 is protected
℃；Then 18s is shelved；
(3) circulation step (1) and (2) ten eight times；
(4) to constant-current charging of battery 5s under conditions of being 3 times in multiplying power, restrictive condition: voltage: 1.65V, temperature: 45 DEG C is protected；
Shelve 17s；
Eight, circulation electric discharge
(1) constant-current discharge 10s under conditions of being 3 times in multiplying power, protect restrictive condition: voltage: then 1.1V shelves 6s；
(2) constant-current discharge 30s under conditions of being 3 times in multiplying power, protect restrictive condition: voltage: then 1.1V shelves 18s；
(3) circulation step (1) and (2) ten eight times, shelve 14s again after circulation；
Nine, circulation step seven and 8 100 times；
Ten, battery is carried out putting remnants
10min is shelved, constant-current discharge is carried out under conditions of being then 1 times in multiplying power and is then put again to monomer 1V until being discharged
Set 10min；
11, DC internal resistance test is carried out to battery in the way of step 3, and battery is carried out in the way of step 4
Put remnants；
12, volume test is carried out to battery in the way of step 2；
13, continue to carry out DC internal resistance test to battery in the way of step 3, and to battery in the way of step 4
It carries out putting remnants, completes test.
2. a kind of pulse cycle life testing method of nickel-metal hydride battery for electric vehicle according to claim 1, feature
It is, in all steps, battery is carried out in the case where inner pressure of battery is the protection restrictive condition of 0.3MPa in constant-current charge.
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| CN107300650B (en) * | 2017-06-28 | 2020-12-25 | 工业和信息化部电子第五研究所华东分所 | Intermittent life test system and method |
| CN109342966A (en) * | 2018-09-26 | 2019-02-15 | 深圳市朗能电池有限公司 | Remaining battery life determination method, device, computer equipment and storage medium |
| CN109991557A (en) * | 2018-11-30 | 2019-07-09 | 常州车之翼动力科技有限公司 | Dynamic lithium battery cycle life detection method |
| CN109856559B (en) * | 2019-02-28 | 2021-10-22 | 武汉理工大学 | Lithium battery cycle life prediction method |
| CN111722134B (en) * | 2019-03-18 | 2021-08-24 | Oppo广东移动通信有限公司 | Method and device for measuring direct current impedance of battery, charging system and terminal equipment |
| CN112305439B (en) * | 2019-07-31 | 2022-01-07 | 比亚迪股份有限公司 | Battery life testing method and device and readable storage medium |
| CN112462186B (en) * | 2020-11-18 | 2022-09-20 | 上海稊米汽车科技有限公司 | Test method for cycle life of super capacitor |
| CN114325192B (en) * | 2021-12-30 | 2023-08-15 | 深蓝汽车科技有限公司 | Pulse heating endurance test method for electric drive system |
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