CN108254098A - The real-time detection method of electric vehicle motor controller interior environment temperature - Google Patents
The real-time detection method of electric vehicle motor controller interior environment temperature Download PDFInfo
- Publication number
- CN108254098A CN108254098A CN201611242205.6A CN201611242205A CN108254098A CN 108254098 A CN108254098 A CN 108254098A CN 201611242205 A CN201611242205 A CN 201611242205A CN 108254098 A CN108254098 A CN 108254098A
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- temperature
- electric machine
- machine controller
- real
- motor controller
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
- G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
- G01K7/24—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor in a specially-adapted circuit, e.g. bridge circuit
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K2205/00—Application of thermometers in motors, e.g. of a vehicle
Abstract
The invention discloses a kind of real-time detection method of electric vehicle motor controller interior environment temperature, this method detects electric machine controller interior circuit board and space temperature respectively using temperature sensor and temperature probe；Electric machine controller makes the temperature gap that motor operation both obtains when static operating mode, electric machine controller is run under declared working condition, when space temperature fluctuation is less than 1 DEG C, record the temperature gap of the two, so as to obtain temperature correction facotor, the real time temperature of temperature sensor detection using temperature correction facotor is corrected, the real time environment temperature inside electric machine controller is just obtained eventually by temperature sensor, realizes the real-time detection of environment temperature.This method detects electric machine controller interior environment temperature in real time, for electric machine controller fault diagnosis and control strategy optimization, avoiding occurring abnormal excess temperature inside electric machine controller, improving service life, it is ensured that safety, the normally travel of vehicle.
Description
Technical field
The present invention relates to a kind of real-time detection methods of electric vehicle motor controller interior environment temperature.
Background technology
The electric machine controller of general electric vehicle is all using the drive module with NTC thermistor, if drive module
In preferable cooler environment, the drive module temperature detected at this time by NTC thermistor is not equivalent to electric machine controller
Interior environment temperature, if occurring abnormal excess temperature inside electric machine controller, can influence in electric machine controller electronic component and
The service life of drive module may influence the normally travel of electric vehicle when serious, there are some potential safety problemss.And mesh
Front motor controller usually acquires motor temperature and drive module temperature for motor control and fault diagnosis, it is difficult to be controlled
The optimization of aspect, Fault Diagnosis Strategy is complicated, constrains the development of motor in electric automobile control technology.
Invention content
The technical problems to be solved by the invention are to provide a kind of reality of electric vehicle motor controller interior environment temperature
When detection method, this method detects electric machine controller interior environment temperature in real time, for examining electric machine controller failure
Disconnected and control strategy optimization avoids occurring abnormal excess temperature inside electric machine controller, improves service life, it is ensured that the safety of vehicle,
Normally travel.
In order to solve the above technical problems, the real-time detection method of electric vehicle motor controller interior environment temperature of the present invention
Include the following steps：
Step 1: disposing temperature sensor on electric machine controller internal circuit board, and pass through temperature sampling processing circuit reality
When collecting circuit board temperature data；
Step 2: four temperature probes are at least placed in motor controller casing inner space, it is real-time using temperature detection instrument
Acquire the temperature data of each temperature probe；
Step 3: at 25 DEG C of environment temperature, electric machine controller driving motor runs on stationary state, record temperature sensor inspection
The initial temperature T1 of survey records the initial temperature of each temperature probe and is averaged T2, obtains the difference DELTA T1 of T1 and T2；
Step 4: electric machine controller is run under declared working condition, when the temperature wave that temperature detection instrument was shown in 30 minutes
When moving less than 1 DEG C, show that motor controller casing internal temperature has been in stable state at this time, record temperature sensor detection
Temperature T3 records the temperature of each temperature probe detection and is averaged T4, obtains the difference DELTA T2 of T3 and T4；
Step 5: temperature correction facotor K is calculated,
Step 6: obtaining the real time environment temperature T inside electric machine controller and being：
Wherein：T5 is the temperature value detected in real time by temperature sensor.
Further, the temperature sensor is thermistor, and the temperature sampling processing circuit includes bridge modules and letter
Number amplification module, the thermistor are set on the bridge arm of the bridge modules, and the output terminal of the bridge modules connects the letter
The input terminal of number amplification module, the change in resistance signal conversion of thermistor is enlarged into voltage by the signal amplification module to be believed
Number.
Further, the temperature probe is respectively placed in surrounding and the centre of motor controller casing inner space.
Since the real-time detection method of electric vehicle motor controller interior environment temperature of the present invention employs above-mentioned technical proposal,
I.e. this method detects electric machine controller interior circuit board and space temperature respectively using temperature sensor and temperature probe；Motor controls
Device makes the temperature gap that motor operation both obtains when static operating mode, and electric machine controller is run under declared working condition, space temperature
When degree fluctuation is less than 1 DEG C, the temperature gap of the two is recorded, so as to obtain temperature correction facotor, to temperature sensor detection
Real time temperature is corrected using temperature correction facotor, is just obtained eventually by temperature sensor real-time inside electric machine controller
Environment temperature realizes the real-time detection of environment temperature.This method detects electric machine controller interior environment temperature in real time, uses
In to electric machine controller fault diagnosis and control strategy optimization, avoid occurring abnormal excess temperature inside electric machine controller, improve and use
Service life, it is ensured that safety, the normally travel of vehicle.
Description of the drawings
The present invention is described in further detail with embodiment below in conjunction with the accompanying drawings：
Fig. 1 is temperature sampling processing circuit schematic diagram in this method.
Specific embodiment
The real-time detection method of electric vehicle motor controller interior environment temperature of the present invention includes the following steps：
Step 1: disposing temperature sensor on electric machine controller internal circuit board, and pass through temperature sampling processing circuit reality
When collecting circuit board temperature data；
Step 2: four temperature probes are at least placed in motor controller casing inner space, it is real-time using temperature detection instrument
Acquire the temperature data of each temperature probe；
Step 3: at 25 DEG C of environment temperature, electric machine controller driving motor runs on stationary state, record temperature sensor inspection
The initial temperature T1 of survey records the initial temperature of each temperature probe and is averaged T2, obtains the difference DELTA T1 of T1 and T2；It is average
Value T2 is the sum of initial temperature value of each temperature probe detection divided by temperature probe quantity；
Step 4: electric machine controller is run under declared working condition, when the temperature wave that temperature detection instrument was shown in 30 minutes
When moving less than 1 DEG C, show that motor controller casing internal temperature has been in stable state at this time, record temperature sensor detection
Temperature T3 records the temperature of each temperature probe detection and is averaged T4, obtains the difference DELTA T2 of T3 and T4；Average value T4 is is somebody's turn to do
The sum of temperature value of each temperature probe detection divided by temperature probe quantity under operating mode；
Step 5: temperature correction facotor K is calculated,
Step 6: obtaining the real time environment temperature T inside electric machine controller and being：
Wherein：T5 is the temperature value detected in real time by temperature sensor.
The testing result can make up the error of processing circuit and temperature sampling error, realize electric machine controller internal environment
The real-time detection of temperature.
As shown in Figure 1, it is preferred that the temperature sensor is thermistor 3, and the temperature sampling processing circuit includes electricity
Bridge module 1 and signal amplification module 2, the thermistor 3 be set on the bridge modules 1 bridge arm, the bridge modules 1 it is defeated
Outlet connects the input terminal of the signal amplification module 2, and the signal amplification module 2 is by the change in resistance signal of thermistor 3
Conversion is enlarged into voltage signal Vout.
As shown in Figure 1, setting R5=R6, R7=R8, then the formula of voltage signal Vout is：
The voltage signal directly corresponds to the change in resistance of thermistor, so as to obtain the real-time temperature values of circuit board.
Preferably, the temperature probe is respectively placed in surrounding and the centre of motor controller casing inner space.Pass through
Temperature probe carries out motor controller casing inner space multiple spot detection and is averaged, to ensure enclosure interior space temperature
The accuracy of detection.
This method acquires the actual temperature in electric machine controller interior circuit board and space by temperature element first, in motor control
When increase temperature sensor detects electric machine controller interior environment temperature in real time inside device processed, this testing result is inevitable
Can be there are error, which can be eliminated by this method, under specific operation, by acquiring electric machine controller circuit plate
Temperature and motor controller casing space temperature obtain the correction coefficient of temperature, according to the correction coefficient to being examined by temperature sensor
The temperature value of survey is corrected, and the environment temperature inside electric machine controller is just obtained eventually by temperature sensor；Temperature sensing
The signal of device can be used temperature sampling processing circuit and acquire and handle.Electric machine controller interior environment temperature can be to electric machine controller
Fault diagnosis and control strategy optimization provide beneficial help, such as when initial motor temperature and drive module temperature occur, drive
When dynamic device interior environment temperature differs larger, available for diagnosing the specific source of trouble；And when only initial motor temperature and driving
During module temperature, then complicated strategy is needed to be judged, so as to simplify Fault Diagnosis Strategy, Optimal Control Strategy avoids
Electric machine controller over-heat inside improves service life, it is ensured that safe driving.
Claims (3)
1. a kind of real-time detection method of electric vehicle motor controller interior environment temperature, it is characterised in that this method is included such as
Lower step：
Step 1: disposing temperature sensor on electric machine controller internal circuit board, and pass through temperature sampling processing circuit reality
When collecting circuit board temperature data；
Step 2: four temperature probes are at least placed in motor controller casing inner space, it is real-time using temperature detection instrument
Acquire the temperature data of each temperature probe；
Step 3: at 25 DEG C of environment temperature, electric machine controller driving motor runs on stationary state, record temperature sensor inspection
The initial temperature T1 of survey records the initial temperature of each temperature probe and is averaged T2, obtains the difference DELTA T1 of T1 and T2；
Step 4: electric machine controller is run under declared working condition, when the temperature wave that temperature detection instrument was shown in 30 minutes
When moving less than 1 DEG C, show that motor controller casing internal temperature has been in stable state at this time, record temperature sensor detection
Temperature T3 records the temperature of each temperature probe detection and is averaged T4, obtains the difference DELTA T2 of T3 and T4；
Step 5: temperature correction facotor K is calculated,
Step 6: obtaining the real time environment temperature T inside electric machine controller and being：
Wherein：T5 is the temperature value detected in real time by temperature sensor.
2. the real-time detection method of electric vehicle motor controller interior environment temperature according to claim 1, feature
It is：The temperature sensor is thermistor, and the temperature sampling processing circuit includes bridge modules and signal amplification module,
The thermistor is set on the bridge arm of the bridge modules, and the output terminal of the bridge modules connects the signal amplification module
The change in resistance signal conversion of thermistor is enlarged into voltage signal by input terminal, the signal amplification module.
3. the real-time detection method of electric vehicle motor controller interior environment temperature according to claim 1 or 2, special
Sign is：The temperature probe is respectively placed in surrounding and the centre of motor controller casing inner space.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611242205.6A CN108254098A (en) | 2016-12-29 | 2016-12-29 | The real-time detection method of electric vehicle motor controller interior environment temperature |
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| CN201611242205.6A CN108254098A (en) | 2016-12-29 | 2016-12-29 | The real-time detection method of electric vehicle motor controller interior environment temperature |
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| CN108254098A true CN108254098A (en) | 2018-07-06 |
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| CN201611242205.6A Withdrawn CN108254098A (en) | 2016-12-29 | 2016-12-29 | The real-time detection method of electric vehicle motor controller interior environment temperature |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109302120A (en) * | 2018-09-28 | 2019-02-01 | 上汽通用五菱汽车股份有限公司 | A kind of Control of Electric Vehicles method, electric car and computer readable storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156000A (en) * | 2011-03-17 | 2011-08-17 | 北京经纬恒润科技有限公司 | Electric motor, electric motor winding temperature detection method and device as well as electric motor winding thermal protection method and device |
| CN104067118A (en) * | 2014-06-27 | 2014-09-24 | 深圳华盛昌机械实业有限公司 | Value compensation method and device of temperature sensor, and air quality detector |
| CN104990643A (en) * | 2015-06-29 | 2015-10-21 | 山东超越数控电子有限公司 | Terminal ambient temperature testing method based on double temperature sensors |
-
2016
- 2016-12-29 CN CN201611242205.6A patent/CN108254098A/en not_active Withdrawn
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102156000A (en) * | 2011-03-17 | 2011-08-17 | 北京经纬恒润科技有限公司 | Electric motor, electric motor winding temperature detection method and device as well as electric motor winding thermal protection method and device |
| CN104067118A (en) * | 2014-06-27 | 2014-09-24 | 深圳华盛昌机械实业有限公司 | Value compensation method and device of temperature sensor, and air quality detector |
| CN104990643A (en) * | 2015-06-29 | 2015-10-21 | 山东超越数控电子有限公司 | Terminal ambient temperature testing method based on double temperature sensors |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109302120A (en) * | 2018-09-28 | 2019-02-01 | 上汽通用五菱汽车股份有限公司 | A kind of Control of Electric Vehicles method, electric car and computer readable storage medium |
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Application publication date: 20180706 |