CN103197254B - 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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- CN103197254B CN103197254B CN201310105084.0A CN201310105084A CN103197254B CN 103197254 B CN103197254 B CN 103197254B CN 201310105084 A CN201310105084 A CN 201310105084A CN 103197254 B CN103197254 B CN 103197254B
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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 electric vehicle performance field tests, particularly battery performance test device and method of testing in a kind of electric motor car traveling.
Background technology
The operating mode more complicated that electric motor car driving process comprises, starting is accelerated, the stable traveling under different road conditions, overtake other vehicles acceleration, upward slope, load-carrying, braking etc., and the battery discharge current under different operating mode is all different, and in continuous change.Battery is after repeatedly discharging and charging, and capacity can decline gradually, then scraps when battery capacity drops to a certain degree.The capacity fade characteristics of battery is closely related with the service condition of battery, and heavy-current discharge can reduce the life-span of battery, and low discharging current then can be conducive to extending the life of a cell.The battery discharge characteristic method of testing of standard, the method taked constant-current discharge or discharge stage by stage, truly can not reflect the actual service condition of battery of electric vehicle, in the actual usability of prediction battery of electric vehicle, have comparatively big error.In LEV (battery-operated motor cycle, electric bicycle, electro-tricycle etc.) industry, the test result difference of the actual service condition of battery and producer is larger.For the lead-acid battery of battery-operated motor cycle, according to battery testing standard, the cycle life of battery is more than 200 times, and in the motorcycle model had, the life-span is less than 100 times.The standard cycle operating mode of vehicle performance test take the speed of a motor vehicle as control objectives, 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 is just to provide 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 object of the present invention is realized by such technical scheme, and it includes current sensor, vehicle speed sensor and acquisition module; Acquisition module for gathering the voltage signal of mesuring battary, for current sensor provides working power, and the vehicle speed signal that the current signal that collects of received current sensor and vehicle speed sensor collect.
Further, described device also includes the temperature sensor for test environment temperature, and acquisition module receives the temperature data that temperature sensor collects.
Further, described acquisition module includes power supply, power circuit, current sensor power supply, storer and governor circuit, power supply is respectively governor circuit by power circuit and current sensor power supply provides working power, current sensor power supply provides working power for current sensor, the data output end of governor circuit is connected with storer, the instruction output end of governor circuit is connected with current sensor power supply, the current signal that governor circuit difference received current sensor gathers, the voltage signal of mesuring battary, the vehicle speed signal that vehicle speed sensor gathers and the temperature signal that temperature sensor gathers.
Another object of the present invention is just to provide a kind of electric motor car driving process battery performance test method, it can complete the work of electric motor car driving process battery performance test in testing laboratory, test out the actual usability of battery, save manpower and materials spent in test process.
This object of the present invention is realized 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) mesuring battary being full of electricity is arranged in electric motor car, drive electric motor car and travel electric discharge on road surface, governor circuit controls current sensor power supply for current sensor provides working current, make the curent change data in current sensor collection electric motor car driving process, vehicle speed sensor gathers the speed of a motor vehicle delta data in electric motor car driving process, governor circuit received current delta data and speed of a motor vehicle delta data, generate curent change curve and speed of a motor vehicle change curve, the environment temperature in record driving process;
2) electronic load is connected after mesuring battary described in step 1) being full of electricity, electronic load is connected with host computer, the electric discharge change curve that host computer makes mesuring battary by control electronic load is consistent with the curent change curve recorded in step 1), circulation discharge test is carried out to mesuring battary, until battery undervoltage, in discharge process, computing machine reads the current signal that collects of electronic load box and voltage signal by connection, record curent change curve and the voltage change curve of whole discharge process, in test process, keep the mean value of the environment temperature in temperature residing for battery and step 1) close,
3) according to step 1) and step 2) the middle curent change curve gathered, integration is carried out to electric current, obtain total discharge capacity of mesuring battary, integration is carried out to the speed of a motor vehicle change curve in step 1), obtain the electric motor car distance travelled number in step 1) test process, again according to total discharge capacity amount of battery, calculate the total kilometrage number that electric motor car travels.
Further, the concrete steps of described battery capacity characteristic test are as follows:
A) mesuring battary being full of electricity is arranged in electric motor car, drive electric motor car and travel electric discharge on road surface, governor circuit controls current sensor power supply for current sensor provides working current, make the curent change data in current sensor collection electric motor car driving process, voltage sensor gathers the cell voltage delta data in electric motor car driving process, governor circuit received current delta data and cell voltage delta data, generate curent change curve and cell voltage change curve, the environment temperature in record driving process;
B) by steps A) described in mesuring battary be full of electricity after connect electronic load, host computer makes the electric discharge change curve of mesuring battary and steps A by controlling electronic load) in the curent change curve that records consistent, cycle charging discharge test is carried out to mesuring battary, until battery be again full of electricity after discharge capacity drop to preset value, computing machine reads the current signal that collects of electronic load box and voltage signal by connection, record curent change curve and the voltage change curve of whole discharge process, in test process, keep the environment temperature in temperature residing for battery and step 1) close,
C) according to steps A) and step B) in the curent change curve of each electric discharge of mesuring battary and voltage change curve calculate the discharge capacity that battery discharges at every turn, then the discharge capacity of at every turn discharging according to mesuring battary and mesuring battary charging times draw discharge capacity-charging times change curve.
Further, before governor circuit gathers current sensor data, first controlling current sensor power supply is that current sensor is powered, and while governor circuit collection current sensor data complete, controls current sensor power outage.
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 testing at different temperature, obtain the impact of temperature on mileages of continuation and battery capacity characteristic.
Owing to have employed technique scheme, the present invention has following advantage:
Device of the present invention gathers the current data of electric motor car driving process, voltage data and vehicle speed data by sensor, governor circuit receives the data that also analyte sensors collects, draw the actual performance of battery in electric motor car driving process, governor circuit may be controlled to the time of time that current sensor powers and self received current sensing data, while receiving current sensor data, can also effectively reduce the electricity consumed in test process; The method of the invention only need complete the discharge test of one-shot battery when drive test, mesuring battary all can be accessed load and just can complete by all the other test jobs in testing laboratory, reduces man power and material spent in 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 will be apparent to those skilled in the art to investigating hereafter, or can be instructed from the practice of the present invention.Target of the present invention and other advantages can be realized by instructions below and claims and be obtained.
Accompanying drawing explanation
Accompanying drawing of the present invention is described as follows.
Fig. 1 is the structural representation of device of the present invention;
Fig. 2 is the schematic diagram of governor circuit and current sensor collection signal;
Fig. 3 is the test philosophy block diagram after the method for the invention connects load.
Embodiment
Below in conjunction with drawings and Examples, the invention will be further described.
Electric motor car driving process battery performance test device includes current sensor, vehicle speed sensor and acquisition module; Acquisition module for gathering the voltage signal of mesuring battary, for current sensor provides working power, and the vehicle speed signal that the current signal that collects of received current sensor and vehicle speed sensor collect.
Device also includes the temperature sensor for test environment temperature, and acquisition module receives the temperature data that temperature sensor collects.
Acquisition module includes power supply, power circuit, current sensor power supply, storer and governor circuit, power supply is respectively governor circuit by power circuit and current sensor power supply provides working power, current sensor power supply provides working power for current sensor, the data output end of governor circuit is connected with storer, the instruction output end of governor circuit is connected with current sensor power supply, the current signal that governor circuit difference received current sensor gathers, the voltage signal of mesuring battary, the vehicle speed signal that vehicle speed sensor gathers and the temperature signal that temperature sensor gathers.
The raw data collected can store in memory by acquisition module, again raw data is imported in computer and carry out analyzing and processing, acquisition module also can carry out processing raw data, obtain battery performance test result, then store in memory together with the raw data that test result and sensor are collected.Governor circuit is also provided with operation-interface, and tester can arrange the frequency of operation of current sensor power supply and the frequency reception signal of governor circuit by test interface.
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) mesuring battary being full of electricity is arranged in electric motor car, drive electric motor car and travel electric discharge on road surface, governor circuit controls current sensor power supply for current sensor provides working current, make the curent change data in current sensor collection electric motor car driving process, vehicle speed sensor gathers the speed of a motor vehicle delta data in electric motor car driving process, governor circuit received current delta data and speed of a motor vehicle delta data, generate curent change curve and speed of a motor vehicle change curve, the environment temperature in record driving process;
2) electronic load is connected after mesuring battary described in step 1) being full of electricity, electronic load is connected with host computer, the electric discharge change curve that host computer makes mesuring battary by control electronic load is consistent with the curent change curve recorded in step 1), circulation discharge test is carried out to mesuring battary, until battery undervoltage, in discharge process, computing machine reads the current signal that collects of electronic load box and voltage signal by connection, record curent change curve and the voltage change curve of whole discharge process, in test process, keep the mean value of the environment temperature in temperature residing for battery and step 1) close,
3) according to step 1) and step 2) the middle curent change curve gathered, integration is carried out to electric current, obtain total discharge capacity of mesuring battary, integration is carried out to the speed of a motor vehicle change curve in step 1), obtain the electric motor car distance travelled number in step 1) test process, again according to total discharge capacity amount of battery, calculate the total kilometrage number that electric motor car travels.
The concrete steps of battery capacity characteristic test are as follows:
A) mesuring battary being full of electricity is arranged in electric motor car, drive electric motor car and travel electric discharge on road surface, governor circuit controls current sensor power supply for current sensor provides working current, make the curent change data in current sensor collection electric motor car driving process, voltage sensor gathers the cell voltage delta data in electric motor car driving process, governor circuit received current delta data and cell voltage delta data, generate curent change curve and cell voltage change curve, the environment temperature in record driving process;
B) by steps A) described in mesuring battary be full of electricity after connect electronic load, host computer makes the electric discharge change curve of mesuring battary and steps A by controlling electronic load) in the curent change curve that records consistent, cycle charging discharge test is carried out to mesuring battary, until battery be again full of electricity after discharge capacity drop to preset value, computing machine reads the current signal that collects of electronic load box and voltage signal by connection, record curent change curve and the voltage change curve of whole discharge process, in test process, keep the environment temperature in temperature residing for battery and step 1) close,
C) according to steps A) and step B) in the curent change curve of each electric discharge of mesuring battary and voltage change curve calculate the discharge capacity that battery discharges at every turn, then the discharge capacity of at every turn discharging according to mesuring battary and mesuring battary charging times draw discharge capacity-charging times change curve.The gross energy of electric discharge, unit is volt-ampere hour, i.e. V.A.H, and energy is the integration of power, and power is the product of voltage and current;
Before main governor circuit gathers current sensor data, first controlling current sensor power supply is that current sensor is powered, and while governor circuit collection current sensor data complete, controls current sensor power outage.Data are received for the previous period at governor circuit, as 10ms, control current sensor power work, current sensor power supply is that current sensor is powered, stablize to make sensor output signal, then governor circuit received current signal, controls current sensor power outage after finishing receiving immediately, to reduce power consumption.Such as: the frequency reception signal of governor circuit is 10Hz, namely 100ms receives once, and so current sensor is actual only has the 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 testing at different temperature, obtain the impact of temperature on mileages of continuation and battery capacity characteristic.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, although with reference to preferred embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that, can modify to technical scheme of the present invention or equivalent replacement, and not departing from aim and the scope of the technical program, it all should be encompassed in the middle of right of the present invention.
Claims (3)
1. an electric motor car driving process battery performance test method, is characterized in that: described battery performance test includes mileages of continuation test and battery capacity characteristic test;
The concrete steps of described mileages of continuation test are as follows:
1) mesuring battary being full of electricity is arranged in electric motor car, drive electric motor car and travel electric discharge on road surface, governor circuit controls current sensor power supply for current sensor provides working current, make the curent change data in current sensor collection electric motor car driving process, vehicle speed sensor gathers the speed of a motor vehicle delta data in electric motor car driving process, governor circuit received current delta data and speed of a motor vehicle delta data, generate curent change curve and speed of a motor vehicle change curve, the environment temperature in record driving process;
2) by step 1) described in mesuring battary be full of electricity after connect electronic load, electronic load is connected with host computer, host computer makes the electric discharge change curve of mesuring battary and step 1 by controlling electronic load) in the curent change curve that records consistent, circulation discharge test is carried out to mesuring battary, until battery undervoltage, in discharge process, computing machine reads the current signal that collects of electronic load box and voltage signal by connection, record curent change curve and the voltage change curve of whole discharge process, in test process, keep temperature and step 1 residing for battery) in the mean value of environment temperature close,
3) according to step 1) and step 2) the middle curent change curve gathered, integration is carried out to electric current, obtain total discharge capacity of mesuring battary, to step 1) in speed of a motor vehicle change curve carry out integration, obtain step 1) electric motor car distance travelled number in test process, again according to total discharge capacity amount of battery, calculate the total kilometrage number that electric motor car travels;
The concrete steps of described battery capacity characteristic test are as follows:
A) mesuring battary being full of electricity is arranged in electric motor car, drive electric motor car and travel electric discharge on road surface, governor circuit controls current sensor power supply for current sensor provides working current, make the curent change data in current sensor collection electric motor car driving process, voltage sensor gathers the cell voltage delta data in electric motor car driving process, governor circuit received current delta data and cell voltage delta data, generate curent change curve and cell voltage change curve, the environment temperature in record driving process;
B) by steps A) described in mesuring battary be full of electricity after connect electronic load, host computer makes the electric discharge change curve of mesuring battary and steps A by controlling electronic load) in the curent change curve that records consistent, cycle charging discharge test is carried out to mesuring battary, until battery be again full of electricity after discharge capacity drop to preset value, computing machine reads the current signal that collects of electronic load box and voltage signal by connection, record curent change curve and the voltage change curve of whole discharge process, in test process, keep temperature and step 1 residing for battery) in environment temperature close,
C) according to steps A) and step B) in the curent change curve of each electric discharge of mesuring battary and voltage change curve calculate the discharge capacity that battery discharges at every turn, then the discharge capacity of at every turn discharging according to mesuring battary and mesuring battary charging times draw discharge capacity-charging times change curve.
2. electric motor car driving process battery performance test method as claimed in claim 1, it is characterized in that: before governor circuit gathers current sensor data, first controlling current sensor power supply is that current sensor is powered, while governor circuit collection current sensor data complete, control current sensor power outage.
3. electric motor car driving process battery performance test method as claimed in claim 1, 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 testing at different temperature, obtain the impact of temperature on mileages of continuation and battery capacity characteristic.
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| CN106324514B (en) * | 2016-08-23 | 2018-12-28 | 重庆长安铃木汽车有限公司 | Vehicular battery method for testing performance and its system |
| 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 |
| CN113296011B (en) * | 2021-04-15 | 2022-08-26 | 汇智道晟(舟山)科技有限公司 | Circuit conducted signal active detection analysis system |
| CN113514259B (en) * | 2021-07-23 | 2024-03-19 | 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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| CN201237634Y (en) * | 2008-08-08 | 2009-05-13 | 严承彬 | Fast capacity checking apparatus for electric car accumulator |
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