CN106443483A - Pulse cycle life test method of nickel-metal hydride battery for electric automobile - Google Patents
Pulse cycle life test method of nickel-metal hydride battery for electric automobile Download PDFInfo
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- CN106443483A CN106443483A CN201610975942.0A CN201610975942A CN106443483A CN 106443483 A CN106443483 A CN 106443483A CN 201610975942 A CN201610975942 A CN 201610975942A CN 106443483 A CN106443483 A CN 106443483A
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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
Abstract
The invention discloses a pulse cycle life test method of a nickel-metal hydride battery for an electric automobile. The method includes the steps: 1 discharging residues in the battery; 2 testing capacity of the battery; 3 testing internal direct-current resistance; 4 discharging residues in the battery; 5 circularly charging; 6 circularly discharging; 7 circularly charging; 8 circularly discharging; 9 circulating the seventh step and the eighth step for 100 times; 10 discharging residues in the battery; 11 testing internal direct-current resistance; 12 discharging residues in the battery; 13 testing capacity of the battery; 14 testing internal direct-current resistance; 15 discharging residues in the battery to finish test. The pulse circulation life test method is reasonable in design, strict in conception, high in test result accuracy and suitable for popularization and application and effectively solves the problems that an existing electric automobile battery pulse circulation life test method is low in test result accuracy and efficiency and high in cost investment, cannot improve water electrolysis in electrolyte solution and the like.
Description
Technical field
The present invention relates to a kind of method of testing and in particular to be a kind of pulse cycle longevity of Ni-MH battery used for electric vehicle
Life method of testing.
Background technology
Electric automobile in actual motion, either climbing acceleration, down hill braking, emergency brake, or frequent start-stop, height
Warm environment such as runs at the complex working condition, all can produce pulse current and battery is impacted, rather than stable single constant-current charge or
Discharge condition.Therefore, it is necessary to pulse cycle life test is carried out to the Ni-MH battery of electric automobile, can to grasp it in time
Charging and discharging capabilities and the situation of service life.
However, existing method of testing is due to being difficult to truly simulate complex working condition in actual motion for the electric automobile, institute
To be based on theoretic method of testing mostly, put and have no much reference values in actual applications, it not only tests out
Theoretical life value is much larger than the actual life of battery, and error is larger, and existing method of testing completes a test week
The time that phase needs is very long, thus not only testing efficiency is low, and cost input is higher.
Additionally, in existing method of testing, the charging modes of battery are due to no bright to the electrolysis alleviating water in electrolyte
Aobvious improvement result, thus through being also easy to occur the problems such as battery rouses shell, available capacity reduces after the long or short cycle.
Therefore, it is necessary to improve to existing Ni-MH battery life testing method used for electric vehicle.
Content of the invention
It is an object of the invention to provide a kind of pulse cycle life testing method of Ni-MH battery used for electric vehicle, mainly
Solve existing battery for electric automobile life test mode have that test result precision is low, inefficiency, cost input high and
No improve the problem of moisture electrolysis etc. in electrolyte.
To achieve these goals, the technical solution used in the present invention is as follows：
A kind of pulse cycle life testing method of Ni-MH battery used for electric vehicle, comprises the following steps：
First, battery is carried out putting remnants
Shelving 1min, then under conditions of multiplying power is 1 times, carrying out constant-current discharge to monomer 1V, until being discharged, then
Shelve 10min again；
2nd, volume test is carried out to battery
(1) to constant-current charging of battery 3h under conditions of multiplying power is 0.3333 times, reach specified up to its total capacity
100%, protect restrictive condition：Voltage：1.65V, temperature：45℃；Then then at multiplying power be 0.05 times under conditions of permanent to battery
Current charge 2h, until its total capacity reaches specified 110%, protects restrictive condition：Voltage：1.65V, temperature：45℃；
(2) shelving 1h, then under conditions of multiplying power is 1 times, carrying out constant-current discharge to monomer 1V, until being discharged, then
Shelve 10min again；
3rd, DC internal resistance test
(1) to constant-current charging of battery 30min under conditions of multiplying power is 1 times, until its total capacity reaches specified 50%, protect
Shield restrictive condition：Voltage：1.65V, temperature：45℃；Then shelve 30min；
(2) to constant-current charging of battery 10s under conditions of multiplying power is 0.5 times, protect restrictive condition：Voltage：1.65V, temperature
Degree：45℃；Then shelve 10min；
(3) constant-current discharge 10s under conditions of multiplying power is 0.5 times, protects restrictive condition：Voltage：1V, then shelves
10min；
(4) to constant-current charging of battery 10s under conditions of multiplying power is 1 times, protect restrictive condition：Voltage：1.65V, temperature：
45℃；Then shelve 10min；
(5) constant-current discharge 10s under conditions of multiplying power is 1 times, protects restrictive condition：Voltage：1V, then shelves 10min；
(6) to constant-current charging of battery 10s under conditions of multiplying power is 2 times, protect restrictive condition：Voltage：1.65V, temperature：
45℃；Then shelve 10min；
(7) constant-current discharge 10s under conditions of multiplying power is 2 times, protects restrictive condition：Voltage：1V, then shelves 10min；
(8) to constant-current charging of battery 10s under conditions of multiplying power is 4 times, protect restrictive condition：Voltage：1.65V, temperature：
45℃；Then shelve 10min；
(9) constant-current discharge 10s under conditions of multiplying power is 4 times, protects restrictive condition：Voltage：1V, then shelves 10min；
4th, battery is carried out putting remnants
Carrying out constant-current discharge to monomer 1V under conditions of multiplying power is 1 times, until being discharged, then shelving 10min；
5th, cycle charging
(1) to constant-current charging of battery 10s under conditions of multiplying power is 3 times, protect restrictive condition：Voltage：1.65V, temperature：
45℃；Then shelve 6s；
(2) to constant-current charging of battery 30s under conditions of multiplying power is 3 times, protect restrictive condition：Voltage：1.65V, temperature：
45℃；Then shelve 18s；
(3) circulation step (1), (2) two ten four times；
(4) to constant-current charging of battery 5s under conditions of multiplying power is 3 times, protect restrictive condition：Voltage：1.65V, temperature：
45℃；Then shelve 23s；
6th, circulation electric discharge
(1) constant-current discharge 10s under conditions of multiplying power is 3 times, protects restrictive condition：Voltage：1.1V, then shelves 6s；
(2) constant-current discharge 30s under conditions of multiplying power is 3 times, protects restrictive condition：Voltage：1.1V, then shelves 18s；
(3) circulation step (1), (2) ten eight times, shelve 20s after circulation again；
7th, cycle charging
(1) to constant-current charging of battery 10s under conditions of multiplying power is 3 times, protect restrictive condition：Voltage：1.65V, temperature：
45℃；Then shelve 6s；
(2) to constant-current charging of battery 30s under conditions of multiplying power is 3 times, protect restrictive condition：Voltage：1.65V, temperature：
45℃；Then shelve 18s；
(3) circulation step (1), (2) ten eight times；
(4) to constant-current charging of battery 5s under conditions of multiplying power is 3 times, protect restrictive condition：Voltage：1.65V, temperature：
45℃；Shelve 17s；
8th, circulation electric discharge
(1) constant-current discharge 10s under conditions of multiplying power is 3 times, protects restrictive condition：Voltage：1.1V, then shelves 6s；
(2) constant-current discharge 30s under conditions of multiplying power is 3 times, protects restrictive condition：Voltage：1.1V, then shelves 18s；
(3) circulation step (1), (2) ten eight times, shelve 14s after circulation again；
9th, circulation step seven, 8 100 times；
Tenth, battery is carried out putting remnants
Shelving 10min, then under conditions of multiplying power is 1 times, carrying out constant-current discharge to monomer 1V, until being discharged, then
Shelve 10min again；
11, according to the mode of step 3 battery is carried out with DC internal resistance test, and according to step 4 mode to battery
Carry out putting remnants；
12, according to the mode of step 2, volume test is carried out to battery；
13, continue, according to the mode of step 3, battery is carried out with DC internal resistance test, and the mode pair according to step 4
Battery carries out putting remnants, completes to test.
Further, in all steps, in constant-current charge, all in inner pressure of battery, the protection for 0.3MPa limits bar to battery
Carry out under part.
Compared with prior art, the invention has the advantages that：
(1) present invention is reasonable in design, design is rigorous, test result high precision, and it is by rational parameter designing, and adopts
Intermittent pulse charging manner, thus electric automobile 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, when can make battery have more sufficient chemical reaction again
Between, alleviate and reduce the amount of precipitation of oxygen and hydrogen, prevent the reduction speed of battery available capacity, and then reduce side reaction pair
The infringement of battery, improves the acceptable ability to charging and discharging currents for the battery.The present invention compares assembling electric automobile to test electricity
For the mode of pond performance of operating condition, number of batteries that need not be huge and workload, and test period shorter (experiment shows, every 100
Secondary circulation only needs 2.74 days), thus it has been significantly reduced the input of man power and material's cost.
(2) present invention is when to constant-current charging of battery, all in protection temperature be 45 DEG C, pressure be the subsidiary conditions of 0.3MPa
Under carry out, so can smoothly make battery be filled with electric energy, and further ensure that the accuracy of test.
(3) utilize the test result of the present invention, can inside battery structure to be modeled and divides in conjunction with emulation technology
Analysis, thus optimizing battery formula, technique and electrode material, and then can gradually improve and meet electric automobile to Ni-MH battery
The requirement of power source performance.
Specific embodiment
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 invention provides a kind of pulse cycle life testing method being applied to Ni-MH battery used for electric vehicle, it is main
Employ battery and repeatedly put remnants and the mode of intermittent pulse discharge and recharge, simulated battery runs on actual condition in electric automobile
Under the premise of, frequent starting, acceleration, brake, the charge and discharge process stopping, then testing out the life-span of its pulse cycle.The present invention's
Testing procedure can be shown in following table：
Remarks：
(1) when the 87th step volume test result is less than setting, stop loop test.
(2) method of testing SOC of the present invention circulates between 20%～80%.
Above-mentioned work step 29～60, completes 100 used time 65.76h.
According to the test mode described in above table, you can complete the survey to the electric automobile Ni-MH battery pulse cycle life-span
Examination.
The present invention changes loop test by DC internal resistance several times before and after contrast, in conjunction with emulation technology, can be to battery
Internal structure is modeled and analyzes, thus optimizing battery formula, technique and electrode material, and then can gradually improve and meet
The requirement of the power source performance to Ni-MH battery for the electric automobile.Charging and discharging currents of the present invention are big, and single time is short, that is, with the shape of pulse
Formula is simulating real vehicle operating mode, thus improving the real effectiveness of life test data and battery is fitted to the impact of positive negative impulse current
Should be able to power.And pulse discharge and recharge, 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 especially suitable for for the pulse to Ni-MH battery used for electric vehicle
Cycle life is tested.
According to above-described embodiment, the present invention just can be realized well.What deserves to be explained is, based on said system structure and side
On the premise of method design, for solving same technical problem, though make in the present invention again some have no substantial change or
Polishing, the essence of its technical scheme being adopted, still as the present invention, all should be included in protection scope of the present invention
Within.
Claims (2)
1. a kind of pulse cycle life testing method of electric automobile Ni-MH battery is it is characterised in that comprise the following steps：
First, battery is carried out putting remnants
Shelve 1min, then under conditions of multiplying power is 1 times, carrying out constant-current discharge to monomer 1V, until being discharged, then putting again
Put 10min；
2nd, volume test is carried out to battery
（1）To constant-current charging of battery 3h under conditions of multiplying power is 0.3333 times, until its total capacity reaches specified 100%, protection
Restrictive condition：Voltage：1.65V, temperature：45℃；Then then at multiplying power be 0.05 times under conditions of to constant-current charging of battery 2h, directly
Reach specified 110% to its total capacity, protect restrictive condition：Voltage：1.65V, temperature：45℃；
（2）Shelve 1h, then under conditions of multiplying power is 1 times, carrying out constant-current discharge to monomer 1V, until being discharged, then putting again
Put 10min；
3rd, DC internal resistance test
（1）To constant-current charging of battery 30min under conditions of multiplying power is 1 times, until its total capacity reaches specified 50%, protection limit
Condition processed：Voltage：1.65V, temperature：45℃；Then shelve 30min；
（2）To constant-current charging of battery 10s under conditions of multiplying power is 0.5 times, protect restrictive condition：Voltage：1.65V, temperature：45
℃；Then shelve 10min；
（3）Constant-current discharge 10s under conditions of multiplying power is 0.5 times, protects restrictive condition：Voltage：1V, then shelves 10min；
（4）To constant-current charging of battery 10s under conditions of multiplying power is 1 times, protect restrictive condition：Voltage：1.65V, temperature：45
℃；Then shelve 10min；
（5）Constant-current discharge 10s under conditions of multiplying power is 1 times, protects restrictive condition：Voltage：1V, then shelves 10min；
（6）To constant-current charging of battery 10s under conditions of multiplying power is 2 times, protect restrictive condition：Voltage：1.65V, temperature：45
℃；Then shelve 10min；
（7）Constant-current discharge 10s under conditions of multiplying power is 2 times, protects restrictive condition：Voltage：1V, then shelves 10min；
（8）To constant-current charging of battery 10s under conditions of multiplying power is 4 times, protect restrictive condition：Voltage：1.65V, temperature：45
℃；Then shelve 10min；
（9）Constant-current discharge 10s under conditions of multiplying power is 4 times, protects restrictive condition：Voltage：1V, then shelves 10min；
4th, battery is carried out putting remnants
Carrying out constant-current discharge to monomer 1V under conditions of multiplying power is 1 times, until being discharged, then shelving 10min；
5th, cycle charging
（1）To constant-current charging of battery 10s under conditions of multiplying power is 3 times, protect restrictive condition：Voltage：1.65V, temperature：45
℃；Then shelve 6s；
（2）To constant-current charging of battery 30s under conditions of multiplying power is 3 times, protect restrictive condition：Voltage：1.65V, temperature：45
℃；Then shelve 18s；
（3）Circulation step（1）、（2）24 times；
（4）To constant-current charging of battery 5s under conditions of multiplying power is 3 times, protect restrictive condition：Voltage：1.65V, temperature：45℃；
Then shelve 23s；
6th, circulation electric discharge
（1）Constant-current discharge 10s under conditions of multiplying power is 3 times, protects restrictive condition：Voltage：1.1V, then shelves 6s；
（2）Constant-current discharge 30s under conditions of multiplying power is 3 times, protects restrictive condition：Voltage：1.1V, then shelves 18s；
（3）Circulation step（1）、（2）18 times, after circulation, shelve 20s again；
7th, cycle charging
（1）To constant-current charging of battery 10s under conditions of multiplying power is 3 times, protect restrictive condition：Voltage：1.65V, temperature：45
℃；Then shelve 6s；
（2）To constant-current charging of battery 30s under conditions of multiplying power is 3 times, protect restrictive condition：Voltage：1.65V, temperature：45
℃；Then shelve 18s；
（3）Circulation step（1）、（2）18 times；
（4）To constant-current charging of battery 5s under conditions of multiplying power is 3 times, protect restrictive condition：Voltage：1.65V, temperature：45℃；
Shelve 17s；
8th, circulation electric discharge
（1）Constant-current discharge 10s under conditions of multiplying power is 3 times, protects restrictive condition：Voltage：1.1V, then shelves 6s；
（2）Constant-current discharge 30s under conditions of multiplying power is 3 times, protects restrictive condition：Voltage：1.1V, then shelves 18s；
（3）Circulation step（1）、（2）18 times, after circulation, shelve 14s again；
9th, circulation step seven, 8 100 times；
Tenth, battery is carried out putting remnants
Shelve 10min, then under conditions of multiplying power is 1 times, carrying out constant-current discharge to monomer 1V, until being discharged, then putting again
Put 10min；
11, according to the mode of step 3, battery is carried out with DC internal resistance test, and according to the mode of step 4, battery is carried out
Put remnants；
12, according to the mode of step 2, volume test is carried out to battery；
13, continue according to the mode of step 3 battery to be carried out with DC internal resistance test, and according to step 4 mode to battery
Carry out putting remnants, complete to test.
2. the pulse cycle life testing method of a kind of Ni-MH battery used for electric vehicle according to claim 1, its feature
It is, in all steps, battery, in constant-current charge, is all carried out under the protection restrictive condition for 0.3MPa for the inner pressure of battery.
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| CN107300650A (en) * | 2017-06-28 | 2017-10-27 | 工业和信息化部电子第五研究所华东分所 | A kind of intermittent life pilot 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 |
| CN109856559A (en) * | 2019-02-28 | 2019-06-07 | 武汉理工大学 | A kind of prediction technique of lithium battery cycle life |
| 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 |
| CN111722134A (en) * | 2019-03-18 | 2020-09-29 | 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 |
| CN112305439A (en) * | 2019-07-31 | 2021-02-02 | 比亚迪股份有限公司 | Battery life testing method and device and readable storage medium |
| CN112462186A (en) * | 2020-11-18 | 2021-03-09 | 上海稊米汽车科技有限公司 | Test method for cycle life of super capacitor |
| CN114325192A (en) * | 2021-12-30 | 2022-04-12 | 重庆长安新能源汽车科技有限公司 | Pulse heating durability test method for electric drive system |
| RU2813345C1 (en) * | 2022-11-16 | 2024-02-12 | Публичное акционерное общество энергетики и электрификации "Сахалинэнерго" (ПАО "Сахалинэнерго") | Method for checking characteristics of rechargeable batteries and device for its implementation |
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| 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 |
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| CN111722134A (en) * | 2019-03-18 | 2020-09-29 | 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 |
| 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 |
| CN112305439A (en) * | 2019-07-31 | 2021-02-02 | 比亚迪股份有限公司 | Battery life testing method and device and readable storage medium |
| CN112462186A (en) * | 2020-11-18 | 2021-03-09 | 上海稊米汽车科技有限公司 | Test method for cycle life of super capacitor |
| 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 |
| CN114325192A (en) * | 2021-12-30 | 2022-04-12 | 重庆长安新能源汽车科技有限公司 | Pulse heating durability test method for electric drive system |
| 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 |
| RU2813345C1 (en) * | 2022-11-16 | 2024-02-12 | Публичное акционерное общество энергетики и электрификации "Сахалинэнерго" (ПАО "Сахалинэнерго") | Method for checking characteristics of rechargeable batteries and device for its implementation |
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