CN108549031A - A kind of power battery cycle endurance test rack - Google Patents
A kind of power battery cycle endurance test rack Download PDFInfo
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- CN108549031A CN108549031A CN201810251046.9A CN201810251046A CN108549031A CN 108549031 A CN108549031 A CN 108549031A CN 201810251046 A CN201810251046 A CN 201810251046A CN 108549031 A CN108549031 A CN 108549031A
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- power battery
- power
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- housing
- test
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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]
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Abstract
Present invention is disclosed a kind of power battery cycle endurance test racks, multigroup battery modules are provided in housing of power cell, it is each battery modules charge and discharge that charging/discharging apparatus, which connects power battery charge and discharge electrical interface, air inlet is offered on housing of power cell side wall during power battery cycle endurance test by the battery modules to be cooled down of maximum temperature point, it is equipped with the fan of the air blast into air inlet by the housing of power cell, air outlet is offered above the housing of power cell.The advantage of the invention is that the test-bed accelerates the cooling of battery pack system during experiment, the time used in power battery cycling durable bench test can be greatly reduced, the process of its normal charge and discharge is not interfered with simultaneously, on the basis of original simulation power battery cycling life test process, accelerate test speed, the test period is shortened, company cost is greatly saved.
Description
Technical field
The present invention relates to auto parts and components to test field, and in particular to a kind of that power battery cycling durable can be accelerated cooled
The test-bed of journey.
Background technology
The new-energy automobile of continued support with country to new-energy automobile, China obtains quick development.Power
Major impetus source of the battery as new-energy automobile, is the key components of electric vehicle, and the number of cycling durable is determined
The service life of electric vehicle is determined.
Currently, the test of power battery cycling durable is mainly carried out on rack, to charge and discharge during engine bench test
Temperature has certain requirement, and charge and discharge could be started by generally requiring that power battery is stood to 30 DEG C or less, and power battery exists
During charge and discharge, temperature can increase again, so power battery must stand a period of time after charging complete, wait for that temperature drops
It can start to discharge after to assigned temperature, a period of time, after temperature is down to assigned temperature, ability are also stood after the completion of electric discharge
It starts to charge up, this results in one cycle test to waste the plenty of time because of cooling so that entire cycle endurance test
Period lengthens significantly, and company needs test-bed to run about one to two year to test the cycle life of a power battery
Time not only increases company cost, more extends the project development period.
Currently used cycle endurance test method has following two：
Method one：
1. under room temperature condition (25 DEG C ± 2 DEG C), constant-voltage charge is turned to filling using 1C constant-current charges to end of charge voltage
Electric current stops charging when being down to 0.05C；
2. standing to battery pack system maximum temperature and being down to 30 DEG C hereinafter, as battery pack system maximum temperature is less than 30 DEG C
It then should at least stand 0.5h；
3. being discharged to final discharging voltage with 1C；
4. standing to battery pack system maximum temperature and being down to 30 DEG C hereinafter, as battery pack system maximum temperature is less than 30 DEG C
It then should at least stand 0.5h；
5. repeating step 1. 2. 3. 4. until testing end condition, off-test as defined in reaching.
Method two：
1. under room temperature condition (25 DEG C ± 2 DEG C), constant-voltage charge is turned to filling using 1C constant-current charges to end of charge voltage
Electric current stops charging when being down to 0.05C；
2. standing 1h；
3. being discharged to final discharging voltage with 1C；
4. standing 1h；
5. repeating step 1. 2. 3. 4. until battery pack system maximum temperature reaches system and allows maximum temperature point, standing is extremely
Battery pack system maximum temperature is down to 30 DEG C or less；
6. repeating 1. 2. 3. 4. 5. until testing end condition, off-test as defined in reaching.
In both the above method, shelves temperature-fall period and any measure for accelerating cooling, Temperature fall is not taken to need a large amount of
Time, from the point of view of previous test result, for the battery pack system of no design heat management system, when a charge and discharge cool down
Between be up to more than ten hour, it is also longer than the time that practical charge and discharge occupy, the cycle endurance test of a set of battery pack have 2/3 when
Between be etc. temperature, it is clear that test efficiency is very low.
Invention content
The technical problem to be solved by the present invention is to realize a kind of shortening project development period, the reliable and stable power of experiment
Circulating battery endurance test rack.
To achieve the goals above, the technical solution adopted by the present invention is：A kind of power battery cycle endurance test rack,
Multigroup battery modules are provided in housing of power cell, it is each electricity that charging/discharging apparatus, which connects power battery charge and discharge electrical interface,
Pond module charge and discharge, the power battery during power battery cycle endurance test by the battery modules to be cooled down of maximum temperature point
Air inlet is offered in housing sidewall, and the fan of the air blast into air inlet, the power electric are equipped with by the housing of power cell
Air outlet is offered above the shell of pond.
The air outlet is equipped with the exhaust fan for extracting hot wind out out of housing of power cell.
Temperature sensor is equipped in the housing of power cell, the temperature sensor output temperature signal is upper to BMS
Machine, the BMS host computers output control signals to exhaust fan and fan.
The exhaust fan is powered by 12V constant voltage dc sources by waveform generator.
Gap location of the air outlet between battery modules to be cooled down battery modules adjacent thereto.
The air outlet and air inlet are equipped with blocking piece, and the blocking piece is equipped with handle.
Test method based on the power battery cycle endurance test rack：
Step 1 first with blocking piece blocks air outlet and air inlet；
Step 2 carries out charging operations using charging/discharging apparatus to power battery, and setting time is stood after the completion of to be charged；
Step 3 opens blocking piece, and driving fan and exhaust fan work and reach set temperature to temperature in power battery, later
Stand setting time；
Step 4 carries out discharge operation using charging/discharging apparatus to power battery；
Circulation step 1-4 is until reach off-test condition, off-test.
It is in power battery temperature-fall period, according to the temperature in power battery using fan and exhaust fan in the step 3
The power supply PWM duty cycle for adjusting exhaust fan reduces the air draft speed of exhaust fan with the reduction of temperature in power battery.
A method of building the power battery cycle endurance test rack：
Step 1 connects power battery and charge and discharge test equipment, carries out the charge and discharge test of setting number；
Step 2 finds out the corresponding module number of maximum temperature point, and is defined as battery modules to be cooled down；
Step 3 opens up air inlet in the housing of power cell side walls of battery modules to be cooled down, battery modules to be cooled down with
Between its some adjacent battery modules air outlet is opened up at the top of the housing of power cell of gap location；
Step 4 arranges fan in air inlet, and exhaust fan is arranged at air outlet；
Step 5 is arranged blocking piece for air outlet and air inlet, and handle is arranged on blocking piece.
The step 2 is schemed by control cell module PACK, the position where determining battery modules to be cooled down in power battery
It sets.
The advantage of the invention is that the test-bed accelerates the cooling of battery pack system during experiment, can greatly reduce
Time used in power battery cycling durable bench test, while the process of its normal charge and discharge is not interfered with, it is dynamic in original simulation
On the basis of power battery cycle life experiment process, accelerate test speed, shorten the test period, be greatly saved company at
This.
Description of the drawings
The content of every width attached drawing expression in description of the invention and the label in figure are briefly described below：
Fig. 1 is power battery cycle endurance test rack schematic diagram；
Fig. 2 is former rack and maximum temperature contrast schematic diagram after rack charge and discharge after improvement；
Fig. 3 is former rack and temperature fall time contrast schematic diagram after rack charge and discharge after improvement；
Label in above-mentioned figure is：1, power battery；2, battery modules；3, charging/discharging apparatus；4, air outlet；5, it enters the wind
Mouthful；6, exhaust fan；7, fan.
Specific implementation mode
Rack build process is as follows：
Power battery 1 and charge and discharge test equipment are connected, 5 cycles, analysis 5 are carried out by cycle endurance test operating mode
A cyclic test data are found out the corresponding battery modules 2 of maximum temperature point and are numbered, for ease of being hereinafter described, this maximum temperature point
Corresponding battery modules 2 are named as battery modules 2 to be cooled down, and control cell module 2PACK figures determine battery modules 2 to be cooled down
Position in 1 group of power battery.
It is big according to position with hole making drill 2 position of battery modules to be cooled down corresponding to 1 housing side of power battery
Small at least to open a hole, which is air inlet 5, battery modules 2 to be cooled down and next module right over 1 shell of power battery
Junction open a hole.
With 12V constant voltage dc sources to centrifugation cooling blower and waveform generator power supply, by centrifugation cooling blower and waveform
Generator is connected and is debugged, and adjusts wind speed by adjusting the PWM wave duty ratio of waveform generator, duty ratio is turned up wind speed and is become
Greatly, duty ratio is turned down, and wind speed reduces.The air inlet 5 for centrifuging cooling blower is directed at the trepanning right over battery pack system, commonly
Domestic fan 7 is directed at the trepanning of battery pack system side.
By on the corresponding battery pack housing of tapping, it is stained with handle with common glue, conveniently loads onto and removes, be placed in rack
It is other.
Rack is built into completion by above 4 step.
The rack put up is as shown in Figure 1, be provided with multigroup battery modules 2, charging/discharging apparatus 3 in 1 shell of power battery
1 charge and discharge electrical interface of power battery is connected for 2 charge and discharge of each battery modules, during 1 cycle endurance test of power battery
Air inlet 5,1 shell of power battery are offered in 1 housing sidewall of power battery on 2 side of battery modules to be cooled down of maximum temperature point
Side is equipped with the fan 7 of the air blast into air inlet 5, and air outlet 4 is offered above 1 shell of power battery, and air outlet 4 is equipped with from power
The exhaust fan 6 of extraction hot wind in 1 shell of battery.
It is equipped with temperature sensor in 1 shell of power battery, temperature sensor output temperature signal to BMS host computers, on BMS
Position machine outputs control signals to exhaust fan 6 and fan 7, and exhaust fan 6 is powered by 12V constant voltage dc sources by waveform generator.
Air outlet 4 and air inlet 5 are equipped with blocking piece, and blocking piece is equipped with handle.
Test method based on 1 cycle endurance test rack of above-mentioned power battery：
Step 1 first with the shell for the tapping for having filled handle is blocked up the trepanning on battery pack housing；
Step 2 charges to battery pack system with charging/discharging apparatus 3, and 10mi n are stood after charging complete；
Step 3, after battery pack system relatively stablize after, by battery housing hole open, give 7 He of normal domestic use fan
Cooling blower power supply is centrifuged, normal domestic use fan 7 is made to blow battery pack system, centrifugation cooling blower takes out battery pack system
Wind, while adjusting suitable PWM duty cycle, accelerates the cooling rate of battery pack system, in temperature-fall period, passes through BMS host computers
The temperature for observing each monomer in battery pack system in real time, PWM duty cycle is adjusted according to temperature difference size in due course；
Step 4, when temperature be down to than it is specified can charge and discharge electro-temperature it is high once when, out-of-blast and exhausting, and trepanning is blocked up
Firmly, wait be naturally cooling to it is specified can charge and discharge electro-temperature when, start to discharge.After the completion of electric discharge, 10min is stood, after repetition charges electricity
Temperature-fall period；
It is recycled with this, until reaching off-test condition, off-test.
Former rack is beated with the maximum temperature after the completion of rack charge and discharge of the present invention within the scope of 1 DEG C as can be seen from Figure 2, is arranged
Except the influence of temperature sensor precision and ambient temperature, it is believed that be consistent substantially, namely in temperature-fall period using the present invention
The cooling device increased will not have an impact charge and discharge process.
As can be seen from Figure 3 after bench improvement, the temperature fall time after charging is down to 2.3h or so by 6h or so, the drop after electric discharge
The warm time is down to 3.5h or so by 8.5h, and one recycles the temperature fall time that can save 8.7h, by a set of battery pack cycling durable
1000 calculations, can save 8700h about years, the shortening of test period, the reduction of experimentation cost, it can be seen that.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way
Limitation, as long as the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress is used, or without changing
Other occasions are directly applied to by the design of the present invention and technical solution, within protection scope of the present invention.
Claims (10)
1. a kind of power battery cycle endurance test rack, multigroup battery modules are provided in housing of power cell, charge and discharge are set
Standby connection power battery charge and discharge electrical interface is each battery modules charge and discharge, it is characterised in that：Power battery cycling durable
Air inlet is offered on housing of power cell side wall during experiment by the battery modules to be cooled down of maximum temperature point, it is described dynamic
It is equipped with the fan of the air blast into air inlet by power battery case, air outlet is offered above the housing of power cell.
2. power battery cycle endurance test rack according to claim 1, it is characterised in that：The air outlet be equipped with from
The exhaust fan of extraction hot wind in housing of power cell.
3. power battery cycle endurance test rack according to claim 2, it is characterised in that：The housing of power cell
It is interior to be equipped with temperature sensor, the temperature sensor output temperature signal to BMS host computers, the BMS host computers output control
Signal is to exhaust fan and fan.
4. power battery cycle endurance test rack according to claim 3, it is characterised in that：The exhaust fan is by 12V
Constant voltage dc source is powered by waveform generator.
5. power battery cycle endurance test rack according to claim 1,2,3 or 4, it is characterised in that：The outlet air
Gap location of the mouth between battery modules to be cooled down battery modules adjacent thereto.
6. power battery cycle endurance test rack according to claim 5, it is characterised in that：The air outlet and air inlet
Mouth is equipped with blocking piece, and the blocking piece is equipped with handle.
7. the test method based on power battery cycle endurance test rack described in claim 1-6, it is characterised in that：
Step 1 first with blocking piece blocks air outlet and air inlet；
Step 2 carries out charging operations using charging/discharging apparatus to power battery, and setting time is stood after the completion of to be charged；
Step 3 opens blocking piece, and driving fan and exhaust fan work and reach set temperature to temperature in power battery, stand later
Setting time；
Step 4 carries out discharge operation using charging/discharging apparatus to power battery；
Circulation step 1-4 is until reach off-test condition, off-test.
8. test method according to claim 7, it is characterised in that：In the step 3, it is using fan and exhaust fan
In power battery temperature-fall period, the power supply PWM duty cycle of exhaust fan is adjusted according to the temperature in power battery, in power battery
The reduction of temperature reduces the air draft speed of exhaust fan.
9. a kind of method for building the power battery cycle endurance test rack as described in claim 1-6, it is characterised in that：
Step 1 connects power battery and charge and discharge test equipment, carries out the charge and discharge test of setting number；
Step 2 finds out the corresponding module number of maximum temperature point, and is defined as battery modules to be cooled down；
Step 3 opens up air inlet in the housing of power cell side walls of battery modules to be cooled down, in battery modules to be cooled down and its phase
Between some adjacent battery modules air outlet is opened up at the top of the housing of power cell of gap location；
Step 4 arranges fan in air inlet, and exhaust fan is arranged at air outlet；
Step 5 is arranged blocking piece for air outlet and air inlet, and handle is arranged on blocking piece.
10. the building method of power battery cycle endurance test rack according to claim 9, it is characterised in that：The step
Rapid 2 are schemed by control cell module PACK, the position where determining battery modules to be cooled down in power battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810251046.9A CN108549031A (en) | 2018-03-26 | 2018-03-26 | A kind of power battery cycle endurance test rack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810251046.9A CN108549031A (en) | 2018-03-26 | 2018-03-26 | A kind of power battery cycle endurance test rack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108549031A true CN108549031A (en) | 2018-09-18 |
Family
ID=63517086
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810251046.9A Pending CN108549031A (en) | 2018-03-26 | 2018-03-26 | A kind of power battery cycle endurance test rack |
Country Status (1)
| Country | Link |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101789518A (en) * | 2010-03-23 | 2010-07-28 | 上海中科深江电动车辆有限公司 | Heat exchange structure of power battery box |
| JP2011089938A (en) * | 2009-10-23 | 2011-05-06 | Panasonic Electric Works Co Ltd | Power supply system |
| CN102139646A (en) * | 2011-02-18 | 2011-08-03 | 奇瑞汽车股份有限公司 | Power battery thermal management system and control method thereof |
| CN102288920A (en) * | 2011-05-11 | 2011-12-21 | 重庆长安汽车股份有限公司 | Heat damage testing rack for nickel-hydrogen power battery |
| CN202282635U (en) * | 2011-11-11 | 2012-06-20 | 湖南丰日电源电气股份有限公司 | Multi-loop pulse charging and discharging machine with good heat dissipation |
| CN103887459A (en) * | 2014-03-28 | 2014-06-25 | 安徽江淮汽车股份有限公司 | Power battery system and electric automobile comprising same |
| CN105372291A (en) * | 2015-12-06 | 2016-03-02 | 北京工业大学 | System for testing thermal performance of vehicle power battery |
| CN107422271A (en) * | 2017-06-28 | 2017-12-01 | 中航锂电（江苏）有限公司 | A kind of lithium ion battery self discharge method of testing |
-
2018
- 2018-03-26 CN CN201810251046.9A patent/CN108549031A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011089938A (en) * | 2009-10-23 | 2011-05-06 | Panasonic Electric Works Co Ltd | Power supply system |
| CN101789518A (en) * | 2010-03-23 | 2010-07-28 | 上海中科深江电动车辆有限公司 | Heat exchange structure of power battery box |
| CN102139646A (en) * | 2011-02-18 | 2011-08-03 | 奇瑞汽车股份有限公司 | Power battery thermal management system and control method thereof |
| CN102288920A (en) * | 2011-05-11 | 2011-12-21 | 重庆长安汽车股份有限公司 | Heat damage testing rack for nickel-hydrogen power battery |
| CN202282635U (en) * | 2011-11-11 | 2012-06-20 | 湖南丰日电源电气股份有限公司 | Multi-loop pulse charging and discharging machine with good heat dissipation |
| CN103887459A (en) * | 2014-03-28 | 2014-06-25 | 安徽江淮汽车股份有限公司 | Power battery system and electric automobile comprising same |
| CN105372291A (en) * | 2015-12-06 | 2016-03-02 | 北京工业大学 | System for testing thermal performance of vehicle power battery |
| CN107422271A (en) * | 2017-06-28 | 2017-12-01 | 中航锂电（江苏）有限公司 | A kind of lithium ion battery self discharge method of testing |
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| PB01 | Publication | ||
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Application publication date: 20180918 |