CN103197254A - Testing device and testing method of battery performance in the process of moving of electric vehicle - Google Patents
Testing device and testing method of battery performance in the process of moving of electric vehicle Download PDFInfo
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- CN103197254A CN103197254A CN2013101050840A CN201310105084A CN103197254A CN 103197254 A CN103197254 A CN 103197254A CN 2013101050840 A CN2013101050840 A CN 2013101050840A CN 201310105084 A CN201310105084 A CN 201310105084A CN 103197254 A CN103197254 A CN 103197254A
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Abstract
The invention provides a testing device and a testing method of battery performance in the process of moving of an electric vehicle, and relates to the field of performance testing of electric vehicles. Current data, voltage data and speed data of the electric vehicle in the process of moving are collected by the testing device through sensors, the data collected by the sensors are received and analyzed by a master control circuit so that the actual performance of a battery in the process of moving of the electric vehicle is obtained, time of power supply for a current sensor and time of receiving the data of the current sensor by the master control circuit can be controlled by the master control circuit, the master control circuit is capable of receiving the data of the current sensor, and meanwhile reducing consumed electric quantity in the process of testing effectively. According to the testing method, only one discharging test to the battery is needed in the process of drive testing, other tests can be finished by accessing load to the battery to be tested in a test room, and therefore consumed manpower and material resources in the process of testing of the battery performance can be reduced.
Description
Technical field
The present invention relates to the electric vehicle performance field tests, battery performance test device and method of testing during particularly a kind of electric motor car travels.
Background technology
The operating mode more complicated that the electric motor car driving process comprises, starting is accelerated, stable travel, overtake other vehicles acceleration, upward slope, load-carrying, braking etc. under the different road conditions, the battery discharge current under the different operating modes is all different, and in continuous variation.Battery is after discharging repeatedly and charging, and capacity can descend gradually, then scraps when battery capacity drops to a certain degree.The capacity attenuation characteristic of battery and the operating position of battery are closely related, and heavy-current discharge can reduce the life-span of battery, and low discharging current then can be conducive to extend the life of a cell.The battery discharge characteristic test method of standard is taked constant-current discharge or the method for discharge stage by stage, can not truly reflect the actual operating position of battery of electric vehicle, has than mistake aspect the actual usability of prediction battery of electric vehicle.In LEV (battery-operated motor cycle, electric bicycle, electro-tricycle etc.) industry, the test result of the actual operating position of battery and producer differs bigger.Lead-acid battery with battery-operated motor cycle is example, and according to the battery testing standard, the cycle life of battery is more than 200 times, and on the motorcycle model that has, life-span less than 100 times.The standard cycle operating mode of vehicle performance test is the control target with the speed of a motor vehicle, and the corresponding relation of the speed of a motor vehicle and electric current is not direct.
Summary of the invention
One object of the present invention just provides a kind of electric motor car driving process battery performance test device, and it can realize the work of electric motor car driving process battery performance test, tests out the actual usability of battery.
This purpose of the present invention is to realize that by such technical scheme it includes current sensor, vehicle speed sensor and acquisition module; Acquisition module be used for to be gathered the voltage signal of mesuring battary, for current sensor provides working power, and the vehicle speed signal that collects of the current signal that collects of received current sensor and vehicle speed sensor.
Further, described device also includes the temperature sensor for the test environment temperature, and acquisition module receives the temperature data that temperature sensor collects.
Further, described acquisition module includes power supply, power circuit, the current sensor power supply, storer and governor circuit, power supply is respectively governor circuit by power circuit and the current sensor power supply provides working power, the current sensor power supply provides working power for current sensor, the data output end of governor circuit links to each other with storer, the instruction output end of governor circuit links to each other with the current sensor power supply, and governor circuit is the current signal of received current sensor collection respectively, the voltage signal of mesuring battary, the temperature signal that the vehicle speed signal that vehicle speed sensor is gathered and temperature sensor are gathered.
Another object of the present invention just provides a kind of electric motor car driving process battery performance test method, it can finish the work of electric motor car driving process battery performance test in testing laboratory, test out the actual usability of battery, save spent manpower and materials in the test process.
This purpose of the present invention is to realize by such technical scheme, and battery performance test includes mileages of continuation test and battery capacity characteristic test.
Further, the concrete steps of described mileages of continuation test are as follows:
1) will be full of electric mesuring battary is arranged in the electric motor car, drive the electric motor car discharge of travelling on the road surface, governor circuit control current sensor power supply provides working current for current sensor, make the electric current delta data in the current sensor collection electric motor car driving process, vehicle speed sensor is gathered the speed of a motor vehicle delta data in the electric motor car driving process, governor circuit received current delta data and speed of a motor vehicle delta data, generate electric current change curve and speed of a motor vehicle change curve, the environment temperature in the record driving process;
2) after being full of electricity, mesuring battary described in the step 1) connects electronic load, electronic load is connected with host computer, the electric current change curve that records in the discharge change curve that host computer makes mesuring battary by the control electronic load and the step 1) is consistent, to the mesuring battary discharge test that circulates, under-voltage up to battery, in discharge process, computing machine reads current signal and the voltage signal that electronic load box collects by connection, record electric current change curve and the change in voltage curve of whole discharge process, in the test process, keep the mean value of the environment temperature in battery temperature of living in and the step 1) to approach;
3) according to step 1) and step 2) the middle electric current change curve of gathering, electric current is carried out integration, obtain total discharge capacity of mesuring battary, speed of a motor vehicle change curve in the step 1) is carried out integration, obtain the electric motor car distance travelled number in the step 1) test process, according to total discharge capacity amount of battery, calculate the total kilometrage number that electric motor car travels again.
Further, the concrete steps of described battery capacity characteristic test are as follows:
A) will be full of electric mesuring battary is arranged in the electric motor car, drive the electric motor car discharge of travelling on the road surface, governor circuit control current sensor power supply provides working current for current sensor, make the electric current delta data in the current sensor collection electric motor car driving process, voltage sensor is gathered the cell voltage delta data in the electric motor car driving process, governor circuit received current delta data and cell voltage delta data, generate electric current change curve and cell voltage change curve, the environment temperature in the record driving process;
B) with steps A) described in mesuring battary connect electronic load after being full of electricity, host computer makes the discharge change curve and steps A of mesuring battary by the control electronic load) in the electric current change curve that records consistent, mesuring battary is carried out the cycle charging discharge test, discharge capacity after battery is full of electricity again drops to preset value, computing machine reads current signal and the voltage signal that electronic load box collects by connection, record electric current change curve and the change in voltage curve of whole discharge process, in the test process, keep the environment temperature in battery temperature of living in and the step 1) to approach;
C) according to steps A) and step B) in the electric current change curve of each discharge and the change in voltage opisometer of mesuring battary calculate the discharge capacity of the each discharge of battery, draw discharge capacity-charging times change curve according to discharge capacity and the mesuring battary charging times of the each discharge of mesuring battary again.
Further, governor circuit is gathered before the current sensor data, and control current sensor power supply is the current sensor power supply earlier, and when governor circuit collection current sensor data were finished, control current sensor power supply was stopped power supply.
Further, the environment temperature of temperature sensor collecting test in mileages of continuation and battery capacity characteristic test process, and be sent to governor circuit, generate the variation of ambient temperature curve map of battery capacity characteristic test process, by under different temperature, testing, obtain temperature to the influence of mileages of continuation and battery capacity characteristic.
Owing to adopted technique scheme, the present invention to have following advantage:
Device of the present invention is gathered current data, voltage data and the vehicle speed data of electric motor car driving process by sensor, the data that governor circuit receives and analyte sensors collects, draw the actual performance of battery in the electric motor car driving process, governor circuit may be controlled to the time of current sensor supplying time and self received current sensing data, when receiving the current sensor data, can also effectively reduce the electric weight that consumes in the test process; The method of the invention only needs to finish the discharge test of one-shot battery when drive test, all the other test jobs all can insert load with mesuring battary and just can finish in testing laboratory, reduced spent man power and material in the battery performance test process.
Other advantages of the present invention, target and feature will be set forth to a certain extent in the following description, and to a certain extent, based on being apparent to those skilled in the art to investigating hereinafter, perhaps can obtain instruction from the practice of the present invention.Target of the present invention and other advantages can realize and obtain by following instructions and claims.
Description of drawings
Description of drawings of the present invention is as follows.
Fig. 1 is the structural representation of device of the present invention;
Fig. 2 is the schematic diagram that governor circuit and current sensor are gathered signal;
Fig. 3 connects test philosophy block diagram after the load for the method for the invention.
Embodiment
The invention will be further described below in conjunction with drawings and Examples.
Electric motor car driving process battery performance test device includes current sensor, vehicle speed sensor and acquisition module; Acquisition module be used for to be gathered the voltage signal of mesuring battary, for current sensor provides working power, and the vehicle speed signal that collects of the current signal that collects of received current sensor and vehicle speed sensor.
Device also includes the temperature sensor for the test environment temperature, and acquisition module receives the temperature data that temperature sensor collects.
Acquisition module includes power supply, power circuit, the current sensor power supply, storer and governor circuit, power supply is respectively governor circuit by power circuit and the current sensor power supply provides working power, the current sensor power supply provides working power for current sensor, the data output end of governor circuit links to each other with storer, the instruction output end of governor circuit links to each other with the current sensor power supply, and governor circuit is the current signal of received current sensor collection respectively, the voltage signal of mesuring battary, the temperature signal that the vehicle speed signal that vehicle speed sensor is gathered and temperature sensor are gathered.
Acquisition module can be stored in the raw data that collects in the storer, again raw data is imported and carry out analyzing and processing in the computer, acquisition module also can carry out raw data is handled, obtain the battery performance test result, the raw data that test result and sensor are collected is stored in the storer together again.Governor circuit also is provided with operation-interface, and the tester can test interface arrange the frequency of operation of current sensor power supply and the frequency reception signal of governor circuit.
Electric motor car driving process battery performance test method includes mileages of continuation test and battery capacity characteristic test.
The concrete steps of mileages of continuation test are as follows:
1) will be full of electric mesuring battary is arranged in the electric motor car, drive the electric motor car discharge of travelling on the road surface, governor circuit control current sensor power supply provides working current for current sensor, make the electric current delta data in the current sensor collection electric motor car driving process, vehicle speed sensor is gathered the speed of a motor vehicle delta data in the electric motor car driving process, governor circuit received current delta data and speed of a motor vehicle delta data, generate electric current change curve and speed of a motor vehicle change curve, the environment temperature in the record driving process;
2) after being full of electricity, mesuring battary described in the step 1) connects electronic load, electronic load is connected with host computer, the electric current change curve that records in the discharge change curve that host computer makes mesuring battary by the control electronic load and the step 1) is consistent, to the mesuring battary discharge test that circulates, under-voltage up to battery, in discharge process, computing machine reads current signal and the voltage signal that electronic load box collects by connection, record electric current change curve and the change in voltage curve of whole discharge process, in the test process, keep the mean value of the environment temperature in battery temperature of living in and the step 1) to approach;
3) according to step 1) and step 2) the middle electric current change curve of gathering, electric current is carried out integration, obtain total discharge capacity of mesuring battary, speed of a motor vehicle change curve in the step 1) is carried out integration, obtain the electric motor car distance travelled number in the step 1) test process, according to total discharge capacity amount of battery, calculate the total kilometrage number that electric motor car travels again.
The concrete steps of battery capacity characteristic test are as follows:
A) will be full of electric mesuring battary is arranged in the electric motor car, drive the electric motor car discharge of travelling on the road surface, governor circuit control current sensor power supply provides working current for current sensor, make the electric current delta data in the current sensor collection electric motor car driving process, voltage sensor is gathered the cell voltage delta data in the electric motor car driving process, governor circuit received current delta data and cell voltage delta data, generate electric current change curve and cell voltage change curve, the environment temperature in the record driving process;
B) with steps A) described in mesuring battary connect electronic load after being full of electricity, host computer makes the discharge change curve and steps A of mesuring battary by the control electronic load) in the electric current change curve that records consistent, mesuring battary is carried out the cycle charging discharge test, discharge capacity after battery is full of electricity again drops to preset value, computing machine reads current signal and the voltage signal that electronic load box collects by connection, record electric current change curve and the change in voltage curve of whole discharge process, in the test process, keep the environment temperature in battery temperature of living in and the step 1) to approach;
C) according to steps A) and step B) in the electric current change curve of each discharge and the change in voltage opisometer of mesuring battary calculate the discharge capacity of the each discharge of battery, draw discharge capacity-charging times change curve according to discharge capacity and the mesuring battary charging times of the each discharge of mesuring battary again.The gross energy of discharge, unit is volt-ampere hour, i.e. V.A.H, energy is the integration of power, power is the product of voltage and current;
Main governor circuit is gathered before the current sensor data, and control current sensor power supply is the current sensor power supply earlier, and when governor circuit collection current sensor data were finished, control current sensor power supply was stopped power supply.Receive data for the previous period at governor circuit, as 10ms, control current sensor power work, the current sensor power supply is the current sensor power supply, so that sensor output signal is stable, governor circuit received current signal is controlled the current sensor power supply immediately and is stopped power supply after finishing receiving then, to reduce power consumption.For example: the frequency reception signal of governor circuit is 10Hz, and namely 100ms receives once, and current sensor is actual so has only time of 10% to be in power supply state, as shown in Figure 2.
The environment temperature of temperature sensor collecting test in mileages of continuation and battery capacity characteristic test process, and be sent to governor circuit, generate the variation of ambient temperature curve map of battery capacity characteristic test process, by under different temperature, testing, obtain temperature to the influence of mileages of continuation and battery capacity characteristic.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement technical scheme of the present invention, and not breaking away from aim and the scope of the technical program, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (8)
1. electric motor car driving process battery performance test device, it is characterized in that: described device includes current sensor, vehicle speed sensor and acquisition module; Acquisition module be used for to be gathered the voltage signal of mesuring battary, for current sensor provides working power, and the vehicle speed signal that collects of the current signal that collects of received current sensor and vehicle speed sensor.
2. electric motor car driving process battery performance test device as claimed in claim 1, it is characterized in that: described device also includes the temperature sensor for the test environment temperature, and acquisition module receives the temperature data that temperature sensor collects.
3. electric motor car driving process battery performance test device as claimed in claim 2, it is characterized in that: described acquisition module includes power supply, power circuit, the current sensor power supply, storer and governor circuit, power supply is respectively governor circuit by power circuit and the current sensor power supply provides working power, the current sensor power supply provides working power for current sensor, the data output end of governor circuit links to each other with storer, the instruction output end of governor circuit links to each other with the current sensor power supply, and governor circuit is the current signal of received current sensor collection respectively, the voltage signal of mesuring battary, the temperature signal that the vehicle speed signal that vehicle speed sensor is gathered and temperature sensor are gathered.
4. utilize the method for carrying out battery performance test as electric motor car driving process battery performance test device as described in any one of the claim 1-3, it is characterized in that: described battery performance test includes mileages of continuation test and battery capacity characteristic test.
5. electric motor car driving process battery performance test method as claimed in claim 4 is characterized in that, the concrete steps of described mileages of continuation test are as follows:
1) will be full of electric mesuring battary is arranged in the electric motor car, drive the electric motor car discharge of travelling on the road surface, governor circuit control current sensor power supply provides working current for current sensor, make the electric current delta data in the current sensor collection electric motor car driving process, vehicle speed sensor is gathered the speed of a motor vehicle delta data in the electric motor car driving process, governor circuit received current delta data and speed of a motor vehicle delta data, generate electric current change curve and speed of a motor vehicle change curve, the environment temperature in the record driving process;
2) after being full of electricity, mesuring battary described in the step 1) connects electronic load, electronic load is connected with host computer, the electric current change curve that records in the discharge change curve that host computer makes mesuring battary by the control electronic load and the step 1) is consistent, to the mesuring battary discharge test that circulates, under-voltage up to battery, in discharge process, computing machine reads current signal and the voltage signal that electronic load box collects by connection, record electric current change curve and the change in voltage curve of whole discharge process, in the test process, keep the mean value of the environment temperature in battery temperature of living in and the step 1) to approach;
3) according to step 1) and step 2) the middle electric current change curve of gathering, electric current is carried out integration, obtain total discharge capacity of mesuring battary, speed of a motor vehicle change curve in the step 1) is carried out integration, obtain the electric motor car distance travelled number in the step 1) test process, according to total discharge capacity amount of battery, calculate the total kilometrage number that electric motor car travels again.
6. electric motor car driving process battery performance test method as claimed in claim 4 is characterized in that the concrete steps of described battery capacity characteristic test are as follows:
A) will be full of electric mesuring battary is arranged in the electric motor car, drive the electric motor car discharge of travelling on the road surface, governor circuit control current sensor power supply provides working current for current sensor, make the electric current delta data in the current sensor collection electric motor car driving process, voltage sensor is gathered the cell voltage delta data in the electric motor car driving process, governor circuit received current delta data and cell voltage delta data, generate electric current change curve and cell voltage change curve, the environment temperature in the record driving process;
B) with steps A) described in mesuring battary connect electronic load after being full of electricity, host computer makes the discharge change curve and steps A of mesuring battary by the control electronic load) in the electric current change curve that records consistent, mesuring battary is carried out the cycle charging discharge test, discharge capacity after battery is full of electricity again drops to preset value, computing machine reads current signal and the voltage signal that electronic load box collects by connection, record electric current change curve and the change in voltage curve of whole discharge process, in the test process, keep the environment temperature in battery temperature of living in and the step 1) to approach;
C) according to steps A) and step B) in the electric current change curve of each discharge and the change in voltage opisometer of mesuring battary calculate the discharge capacity of the each discharge of battery, draw discharge capacity-charging times change curve according to discharge capacity and the mesuring battary charging times of the each discharge of mesuring battary again.
7. as claim 5 or 6 described electric motor car driving process battery performance test methods, it is characterized in that: governor circuit is gathered before the current sensor data, control current sensor power supply is the current sensor power supply earlier, when governor circuit collection current sensor data were finished, control current sensor power supply was stopped power supply.
8. as claim 5 or 6 described electric motor car driving process battery performance test methods, it is characterized in that: the environment temperature of temperature sensor collecting test in mileages of continuation and battery capacity characteristic test process, and be sent to governor circuit, generate the variation of ambient temperature curve map of battery capacity characteristic test process, by under different temperature, testing, obtain temperature to the influence of mileages of continuation and battery capacity characteristic.
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| CN107515123A (en) * | 2017-09-30 | 2017-12-26 | 南京越博动力系统股份有限公司 | A kind of pure electric automobile road test energy consumption measurement system and its analysis method |
| CN109324296A (en) * | 2018-09-28 | 2019-02-12 | 上汽通用五菱汽车股份有限公司 | The battery performance test method and system of electric car |
| CN111907635A (en) * | 2020-06-30 | 2020-11-10 | 摩拜(北京)信息技术有限公司 | Electric bicycle |
| CN113296011A (en) * | 2021-04-15 | 2021-08-24 | 汇智道晟(舟山)科技有限公司 | Circuit conducted signal active detection analysis system |
| CN113514259A (en) * | 2021-07-23 | 2021-10-19 | 无锡市产品质量监督检验院 | Method and equipment for testing continuous mileage of electric bicycle |
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| CN111907635A (en) * | 2020-06-30 | 2020-11-10 | 摩拜(北京)信息技术有限公司 | Electric bicycle |
| CN113296011A (en) * | 2021-04-15 | 2021-08-24 | 汇智道晟(舟山)科技有限公司 | Circuit conducted signal active detection analysis system |
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| CN103197254B (en) | 2015-05-13 |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150513 |