CN104354693A - Over temperature protection method for ISG (Integrated Starter Generator) of hybrid electric vehicle - Google Patents
Over temperature protection method for ISG (Integrated Starter Generator) of hybrid electric vehicle Download PDFInfo
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- CN104354693A CN104354693A CN201410653351.2A CN201410653351A CN104354693A CN 104354693 A CN104354693 A CN 104354693A CN 201410653351 A CN201410653351 A CN 201410653351A CN 104354693 A CN104354693 A CN 104354693A
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- motor
- temperature
- current time
- running temperature
- running
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/08—Electric propulsion units
- B60W2510/087—Temperature
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/08—Electric propulsion units
- B60W2710/086—Power
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses an over temperature protection method for an ISG (Integrated Starter Generator) of a hybrid electric vehicle. When the ISG is about to achieve a temperature threshold value, the purpose of preventing the ISG from being burnt due to overhigh temperature is achieved by virtue of restricting the power of the ISG. By virtue of the motor, ISG over temperature protection is timely and effective, and charge and discharge performances of an entire-vehicle power battery are slightly influenced.
Description
Technical field
The invention belongs to electric system safety protection function field, be applicable to hybrid vehicle ISG motor overheat protector system.
Background technology
At present, the application of new forms of energy hybrid power system is increasingly extensive, motor is as the key components and parts of new forms of energy hybrid power system, must ensure the safety and reliability of machine operation, operationally, an electric energy part is converted into mechanical energy and exports motor, a part is converted into heat energy, heat is propagated in air or in other media by motor material, if the amount of heat that motor continuous firing produces accumulates to a certain degree, motor just has may by what burn.
The temperature of existing protection motor is unlikely to too high method and is: if after the temperature of motor reaches warning threshold values; the maximum output power of direct reduction motor is to the half of design maximum; if the temperature of motor still can not be controlled after reducing horsepower output; the temperature of motor is elevated to the highest permission operating temperature of motor; now think that serious heat dissipation problem appears in motor; then control motor to close, motor cuts out rear hybrid power system and also lost efficacy thereupon.In hybrid power system; the power that the output of motor short time is larger may be needed; now motor temperature rises thereupon; if temperature once exceed warning threshold values direct by the output power limit of motor to half; the fluctuation of adjustment is too large; make hybrid power system can not obtain lasting smooth-going power stage, easily over protection is caused to motor.
Summary of the invention
The object of the invention is to propose a kind of hybrid vehicle ISG motor excess temperature protection method, in order to improve motor overheat protector validity, promptness, car load power battery charging can not be affected simultaneously.
To achieve these goals, technical scheme provided by the invention is as follows:
A kind of hybrid vehicle ISG motor excess temperature protection method, said method comprising the steps of:
1, the running temperature of motor current time is obtained every a Preset Time;
2, the running temperature of more described current time and the size of preset alert threshold values;
When 3, judging that the running temperature of described current time is less than described preset alert threshold values, determine that the permission parameter of motor is the peak parameters of motor;
When 4, judging that the running temperature of described current time is more than or equal to described preset alert threshold values, the running temperature of more described current time and the size of the highest permission operating temperature of default motor;
5, judging that the running temperature of described current time is more than or equal to described preset alert threshold values and is less than presets when ensureing the highest permission operating temperature of the motor of battery performance, allow the default corresponding relation of parameter according to motor running temperature and motor, determine the permission parameter of the motor corresponding with the running temperature of described motor current time;
When 6, judging that the running temperature of described current time is more than or equal to the motor the highest permission operating temperature of described default guarantee battery performance and is less than the highest permission operating temperature of default motor, allow the default corresponding relation of parameter according to motor running temperature, battery status and motor, determine the permission parameter of the motor corresponding with the running temperature of described motor current time;
When 5, judging that the running temperature of described current time is more than or equal to the highest permission operating temperature of default motor, determine that the permission parameter of described motor is 0;
8, the operational factor controlling motor subsequent time is less than or equal to described permission parameter.
In described step 5, the default corresponding relation of motor running temperature and motor permission parameter is:
Set up in advance with motor running temperature for transverse axis, the permission parameter of motor is the curve of the longitudinal axis, and described curve comprises two sections of fixing curves of slope and straight line.Wherein the starting point of curve is the point corresponding with the preset alert threshold temperature of the peak parameters of motor and motor, described slope of a curve change point is preset the maximum permission parameter of motor ensureing battery performance, and the terminal of shown curve is the initial point that the parameter of electric machine is defined as 0.
In described step 2, the process of the running temperature of more described current time and the size of preset alert threshold values is;
When judging that the running temperature of described current time is less than described preset alert threshold values, determine that the running state of motor is normal condition;
When judging that the running temperature of described current time is more than or equal to described preset alert threshold values, the running temperature of more described current time and the size of the highest permission operating temperature of default motor;
When judging that the running temperature of described current time is more than or equal to described preset alert threshold values and is less than the highest permission operating temperature of default motor, determine that the running state of motor is alarm condition;
When judging that the running temperature of described current time is more than or equal to described preset alert threshold values and is greater than the highest permission operating temperature of default motor, determine that the running state of motor is faulty condition.
In this method, the permission parameter of described motor comprises: output power of motor and Driving Torque.
Adopt above method, effect is:
(1) the present invention is when motor is about to reach threshold temperature; by limiting motor power; reach and prevent motor Yin Wendu too high and cause the object of burning, make motor overheat protector more in time, effectively, too much can not affect car load electrokinetic cell charge-discharge performance simultaneously.
(2) motor running temperature and motor allow the default corresponding relation curve of parameter to be obtained by the test data analyzer under harsh environment and operating mode, can in time, actv. limiting motor temperature continues rising.
(3) this motor excess temperature protection method also considers whether affect electrokinetic cell charge-discharge performance simultaneously; and consider in advance, because power of motor limits the problem causing battery to charge completely, to prevent major failure when working out the default corresponding relation curve of motor running temperature and motor permission parameter.
Accompanying drawing explanation
Fig. 1 is motor excess temperature protection method FB(flow block) of the present invention;
Fig. 2 is the corresponding relation figure that motor of the present invention allows parameter and running temperature.
Fig. 3 is the diagram of circuit of motor overheat protector determination running state of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention will be further described, and as shown in Figure 1, the motor temperature guard method that embodiment provides comprises:
1, the running temperature of motor current time is obtained every a Preset Time.
Here Preset Time pre-sets according to actual conditions; if need to carry out strict protection to the temperature of motor; then Preset Time is little as much as possible; when motor operationally; by the running state of motor and the impact of radiating condition; the temperature of motor is in the middle of real-time change, and the motor temperature guard method that the embodiment of the present application provides carries out follow-up adjustment control based on the running temperature of motor current time.
2. the running temperature of more described current time and the size of preset alert threshold values.
3., when judging that the running temperature of current time is less than preset alert threshold values, determine that the permission parameter of motor is the peak parameters of motor.
4. when judging that the running temperature of current time is more than or equal to preset alert threshold values, the running temperature of more described current time and the size of the highest permission operating temperature of default motor.
5. judging that the running temperature of described current time is more than or equal to described preset alert threshold values and is less than presets when ensureing the highest permission operating temperature of the motor of battery performance, allow the default corresponding relation of parameter according to motor running temperature and motor, determine the permission parameter of the motor corresponding with the running temperature of described motor current time;
6. when judging that the running temperature of described current time is more than or equal to the motor the highest permission operating temperature of described default guarantee battery performance and is less than the highest permission operating temperature of default motor, allow the default corresponding relation of parameter according to motor running temperature, battery status and motor, determine the permission parameter of the motor corresponding with the running temperature of described motor current time;
7., when judging that the running temperature of described current time is more than or equal to the highest permission operating temperature of default motor, determine that the permission parameter of described motor is 0;
8. the operational factor controlling motor subsequent time is less than or equal to described permission parameter.
Above-mentioned preset alert threshold values is the product that the highest permission operating temperature of motor deducts motor maximum temperature rise speed and peak power time length, and the highest permission operating temperature of motor here, motor maximum temperature rise speed and peak power time length calculate according to motor temperature-raising experiment all in advance.
Above-mentioned permission parameter is the maximum parameter under the running temperature of described current time, motor normally being run, the corresponding relation allowing parameter and running temperature is predefined, after the running temperature having acquired motor current time, according to the default corresponding relation allowing parameter and running temperature, calculate the permission parameter that motor runs when this running temperature, permission parameter here comprises horsepower output or the torque of motor.
Be unlikely to protect the running temperature of motor to raise or be unlikely to the too fast of rising, described motor running temperature and motor allow the default corresponding relation of parameter as shown in Figure 2:
Set up in advance with motor running temperature for transverse axis, the permission parameter of motor is the curve of the longitudinal axis, and described curve comprises parabola and straight line.
Described curve is two sections of curves that slope is fixed respectively; Wherein, the starting point of described curve is the point corresponding with the preset alert threshold temperature of the peak parameters of motor and motor, described slope of a curve change point is preset the maximum permission parameter of motor ensureing battery performance, and the terminal of shown curve is the initial point that the parameter of electric machine is defined as 0.
Described slope of a curve change point is limited the train spacing point that power and performance maintain, before this point, power of motor declines fast is that continuation in order to limiting motor temperature is risen, after this point, power of motor declines, and to slow down be charging performance in order to maintain battery, and battery status and motor running temperature are depended in the setting of this point.
The operational factor of described control motor subsequent time is less than or equal to permission parameter, is be achieved by the following scheme: according to power limit P
limitwith motor speed n, in Power Limitation module, pass through T
q limits=P
limit× 9550/n calculates motor output torque limits value T
q limits.Motor is according to torque instruction T
q needswith torque limit value T
q limits, the size of both judgements, if T
q needs> T
q limits, then according to T
q limitsperform, if T
q needs< T
q limits, then still according to T
q needsperform, export to reach torque-limiting, prevent temperature from continuing the object risen.
Fig. 3 is the schematic flow sheet of the determination running state that embodiment provides, and can comprise the following steps:
The running temperature of more described current time and the size of preset alert threshold values;
When judging that the running temperature of described current time is less than described preset alert threshold values, determine that the running state of motor is normal condition;
When judging that the running temperature of described current time is more than or equal to described preset alert threshold values, the running temperature of more described current time and the size of the highest permission operating temperature of default motor;
When judging that the running temperature of described current time is more than or equal to described preset alert threshold values and is less than the highest permission operating temperature of default motor, determine that the running state of motor is alarm condition;
When judging that the running temperature of described current time is more than or equal to described preset alert threshold values and is greater than the highest permission operating temperature of default motor, determine that the running state of motor is faulty condition.
Running state is divided into according to the running temperature of motor current time: normal condition, alarm condition and faulty condition.
Claims (5)
1. a hybrid vehicle ISG motor excess temperature protection method, described method comprises the steps:
(1) running temperature of motor current time is obtained every a Preset Time;
(2) running temperature of more described current time and the size of preset alert threshold values;
(3), when judging that the running temperature of described current time is less than described preset alert threshold values, determine that the permission parameter of motor is the peak parameters of motor;
(4) when judging that the running temperature of described current time is more than or equal to described preset alert threshold values, the running temperature of more described current time and the size of the highest permission operating temperature of default motor;
(5) judging that the running temperature of described current time is more than or equal to described preset alert threshold values and is less than presets when ensureing the highest permission operating temperature of the motor of battery performance, allow the default corresponding relation of parameter according to motor running temperature and motor, determine the permission parameter of the motor corresponding with the running temperature of described motor current time;
(6) when judging that the running temperature of described current time is more than or equal to the motor the highest permission operating temperature of described default guarantee battery performance and is less than the highest permission operating temperature of default motor, allow the default corresponding relation of parameter according to motor running temperature, battery status and motor, determine the permission parameter of the motor corresponding with the running temperature of described motor current time;
(7), when judging that the running temperature of described current time is more than or equal to the highest permission operating temperature of default motor, determine that the permission parameter of described motor is 0;
(8) operational factor controlling motor subsequent time is less than or equal to described permission parameter.
2. hybrid vehicle ISG motor excess temperature protection method according to claim 1, the default corresponding relation of described motor running temperature and motor permission parameter is:
Set up in advance with motor running temperature for transverse axis, the permission parameter of motor is the curve of the longitudinal axis, and described curve comprises two sections of fixing curves of slope and straight line; The starting point of described curve is the point corresponding with the preset alert threshold temperature of the peak parameters of motor and motor, described slope of a curve change point is preset the maximum permission parameter of motor ensureing battery performance, and the terminal of shown curve is the initial point that the parameter of electric machine is defined as 0.
3. hybrid vehicle ISG motor excess temperature protection method according to claim 1, the running temperature of more described current time and the size of preset alert threshold values comprise;
When judging that the running temperature of described current time is less than described preset alert threshold values, determine that the running state of motor is normal condition;
When judging that the running temperature of described current time is more than or equal to described preset alert threshold values, the running temperature of more described current time and the size of the highest permission operating temperature of default motor;
When judging that the running temperature of described current time is more than or equal to described preset alert threshold values and is less than the highest permission operating temperature of default motor, determine that the running state of motor is alarm condition;
When judging that the running temperature of described current time is more than or equal to described preset alert threshold values and is greater than the highest permission operating temperature of default motor, determine that the running state of motor is faulty condition.
4. hybrid vehicle ISG motor excess temperature protection method according to claim 1, the operational factor of described control motor subsequent time is less than or equal to permission parameter, is be achieved by the following scheme: according to power limit P
limitwith motor speed n, in Power Limitation module, pass through T
q limits=P
limit× 9550/n calculates motor output torque limits value T
q limits, motor is according to torque instruction T
q needswith torque limit value T
q limits, the size of both judgements, if T
q needs> T
q limits, then according to T
q limitsperform, if T
q needs< T
q limits, then still according to T
q needsperform, export to reach torque-limiting, prevent temperature from continuing the object risen.
5. hybrid vehicle ISG motor excess temperature protection method according to claim 1, the permission parameter of described motor comprises: output power of motor and Driving Torque.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410653351.2A CN104354693B (en) | 2014-11-17 | 2014-11-17 | Over temperature protection method for ISG (Integrated Starter Generator) of hybrid electric vehicle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410653351.2A CN104354693B (en) | 2014-11-17 | 2014-11-17 | Over temperature protection method for ISG (Integrated Starter Generator) of hybrid electric vehicle |
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|---|---|
| CN104354693A true CN104354693A (en) | 2015-02-18 |
| CN104354693B CN104354693B (en) | 2017-02-01 |
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| CN201410653351.2A Active CN104354693B (en) | 2014-11-17 | 2014-11-17 | Over temperature protection method for ISG (Integrated Starter Generator) of hybrid electric vehicle |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207569A (en) * | 2015-10-26 | 2015-12-30 | 重庆长安汽车股份有限公司 | Over-temperature protection method and device for motor of electric vehicle and electric vehicle |
| CN108068796A (en) * | 2016-11-09 | 2018-05-25 | 现代自动车株式会社 | System and method for controlling a drive motor of a vehicle |
| CN109808672A (en) * | 2017-11-22 | 2019-05-28 | 上海汽车集团股份有限公司 | A kind of mixing dynamical vehicle torsional moment control method and device |
| CN112092630A (en) * | 2020-09-23 | 2020-12-18 | 北京车和家信息技术有限公司 | Motor over-temperature protection method and device, driving system and vehicle |
| CN112166395A (en) * | 2019-07-30 | 2021-01-01 | 深圳市大疆创新科技有限公司 | Holder control method, holder and computer readable storage medium |
| CN112758076A (en) * | 2019-10-21 | 2021-05-07 | 北汽福田汽车股份有限公司 | Vehicle and power control method and device thereof |
| CN113665371A (en) * | 2021-09-14 | 2021-11-19 | 上汽通用五菱汽车股份有限公司 | Electric drive system over-temperature protection method, vehicle and readable storage medium |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207569A (en) * | 2015-10-26 | 2015-12-30 | 重庆长安汽车股份有限公司 | Over-temperature protection method and device for motor of electric vehicle and electric vehicle |
| CN105207569B (en) * | 2015-10-26 | 2018-01-30 | 重庆长安汽车股份有限公司 | Motor excess temperature protection method, device and the electric car of a kind of electric car |
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| CN112166395A (en) * | 2019-07-30 | 2021-01-01 | 深圳市大疆创新科技有限公司 | Holder control method, holder and computer readable storage medium |
| CN112758076A (en) * | 2019-10-21 | 2021-05-07 | 北汽福田汽车股份有限公司 | Vehicle and power control method and device thereof |
| CN112758076B (en) * | 2019-10-21 | 2022-05-24 | 北汽福田汽车股份有限公司 | Vehicle and power control method and device thereof |
| CN112092630A (en) * | 2020-09-23 | 2020-12-18 | 北京车和家信息技术有限公司 | Motor over-temperature protection method and device, driving system and vehicle |
| CN113665371A (en) * | 2021-09-14 | 2021-11-19 | 上汽通用五菱汽车股份有限公司 | Electric drive system over-temperature protection method, vehicle and readable storage medium |
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Effective date of registration: 20200102 Address after: 400023, No. 260, Jianxin East Road, Jiangbei District, Chongqing Patentee after: Chongqing Chang'an Automobile Co., Ltd. Address before: 400023, No. 260, Jianxin East Road, Jiangbei District, Chongqing Co-patentee before: Chongqing Chang'an New Energy Automobile Co., Ltd. Patentee before: Chongqing Chang'an Automobile Co., Ltd. |
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