CN109649156A - A kind of electric automobile cooling system and its control method of automatic adjusument - Google Patents
A kind of electric automobile cooling system and its control method of automatic adjusument Download PDFInfo
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- CN109649156A CN109649156A CN201910001972.5A CN201910001972A CN109649156A CN 109649156 A CN109649156 A CN 109649156A CN 201910001972 A CN201910001972 A CN 201910001972A CN 109649156 A CN109649156 A CN 109649156A
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- 238000001816 cooling Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 76
- 238000004378 air conditioning Methods 0.000 claims abstract description 24
- 230000033228 biological regulation Effects 0.000 claims abstract description 16
- 230000002452 interceptive effect Effects 0.000 claims abstract description 9
- 230000002159 abnormal effect Effects 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 2
- 230000017525 heat dissipation Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K11/00—Arrangement in connection with cooling of propulsion units
- B60K11/02—Arrangement in connection with cooling of propulsion units with liquid cooling
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The present invention discloses the electric automobile cooling system and its control method of a kind of automatic adjusument, including man-machine interactive system, entire car controller, motor, electric machine controller, it is three-in-one in DC converter (DC/DC) and Vehicular charger, radiator, stepless time adjustment radiator fan, can self-adaptive temperature speed regulation water pump, cooling pipe, air-conditioning switch and air-conditioning duct pressure sensor, cooling pipe by can self-adaptive temperature adjust the speed water pump, it is three-in-one in DC/DC and Vehicular charger, electric machine controller, motor, radiator be sequentially connected in series；Can water pump, three-in-one DC/DC and the Vehicular charger of self-adaptive temperature speed regulation, electric machine controller, motor, entire car controller, man-machine interactive system communicated by vehicle CAN network；Three-in-one in system is made of DC converter (DC/DC), Vehicular charger, high-tension distribution box, can be integrated with water pump controller in the water pump of self-adaptive temperature speed regulation, be carried out rotational speed regulation according to the temperature information of operating mode and components.
Description
Technical field:
The present invention relates to a kind of electric automobile cooling system of automatic adjusument and its control methods, belong to automotive engineering
Field.
Background technique:
Pure electric automobile is during traveling, trickle charge, motor, electric machine controller, DC converter (DC/DC) and vehicle-mounted
Charger can all generate a large amount of heat, it is therefore desirable to which cooling system cools down for it.The type of cooling of current driving force cooling system
It is divided into natural cooling, air-cooled and water cooling, in traditional cooling scheme, motor and electric machine controller are all made of water cooling, DC/DC
Air-cooled or natural cooling is used with OBC.In scheme, water pump is the constant speed water pump without CAN communication function, when ON grades on automobile
When electric, water pump is with the work of maximum power constant speed.Cooling system and air-conditioning heat dissipation system share a radiator fan, be one grade or
Two grades of constant speed fans of person.
Problems and disadvantages of the existing technology, and the reason of occur:
This traditional cooling scheme control is simple, but has the disadvantage that:
1) DC/DC, Vehicular charger use natural cooling or air-cooled, and cooling effect is poor, meanwhile, DC/DC, vehicle-mounted
Charger, high-tension distribution box (PDU) be integrated into it is three-in-one after, original type of cooling is unable to satisfy cooling requirements.
2) automobile in motion, operating condition be it is complicated and changeable, radiating requirements can also change therewith.In bad working environments
Under, water pump can be run with maximum speed, but under the operating condition of low speed or low torque, motor and controller calorific value compared with
Small, radiating requirements are smaller, at this point, water pump is still run with maximum speed, cause energy dissipation, reduce automobile course continuation mileage.
3) water pump high-speed cruising always, reduces the service life.
4) cooling system can not upload the status information of cooling water pump, when encountering the abnormalities such as failure, vehicle and drive
The person of sailing can not be supervised.
5) radiator fan is controlled by cooling system and air-conditioning heat dissipation system simultaneously, is one grade or two grades of constant speed fans, shelves
The fixed and corresponding revolving speed in position is unadjustable, be easy to appear bottom gear and be unable to satisfy cooling requirements, and energy dissipation shows top gear again
As that can not adapt to the different operating conditions of different automobile types and vehicle of the same race, cause heat dissipation performance poor and energy dissipation.
Summary of the invention:
The present invention is to provide a kind of electric car of automatic adjusument to solve the above-mentioned problems of the prior art
Cooling system and its control method.
The present invention adopts the following technical scheme: a kind of electric automobile cooling system of automatic adjusument, including human-computer interaction
System, entire car controller, motor, electric machine controller, it is three-in-one in DC converter (DC/DC) and Vehicular charger, heat dissipation
Device, stepless time adjustment radiator fan, can self-adaptive temperature speed regulation water pump, cooling pipe, air-conditioning switch and air-conditioning duct pressure
Sensor, the cooling pipe by can self-adaptive temperature adjust the speed water pump, it is three-in-one in DC/DC and Vehicular charger, motor
Controller, motor, radiator are sequentially connected in series；Can self-adaptive temperature speed regulation water pump, three-in-one DC/DC and Vehicular charger,
Electric machine controller, motor, entire car controller, man-machine interactive system are communicated by vehicle CAN network；It is three-in-one in system
It is made of, can be integrated in the water pump of self-adaptive temperature speed regulation DC converter (DC/DC), Vehicular charger, high-tension distribution box
There is water pump controller, rotational speed regulation is carried out according to the temperature information of operating mode and components；Air-conditioning duct pressure sensor
It is mounted in air-conditioning pressure piping, the corresponding relationship of pressure value and rotation speed of the fan is pre-stored in entire car controller, stepless time adjustment
Radiator fan is adjusted the speed by the pwm signal that entire car controller is sent.
The present invention also adopts the following technical scheme that a kind of control method of the electric automobile cooling system of automatic adjusument,
Process is as follows:
1) water pump reads the vehicle-state message that entire car controller issues by CAN network, judges vehicle operation mode；
2) when the operating mode of vehicle is in trickle charge mode, water pump is with minimum speed npmin operation, until automobile trickle charge
Terminate, water pump stops working；
3) when the operating mode of vehicle is in the mode of can travel, water pump reads DC/DC, motor, motor control by CAN network
Device real time temperature processed；
4) water pump calculates the maximum of T max and motor of DC/DC temperature TDC/DC and electric machine controller temperature TMCU
Temperature TEM；
5) gear a judgement is carried out according to Tmax:
1. temperature to be divided into P range from low to high, corresponding different stalls, number 1,2,3 ... successively sorts, by shelves
Position-thermometer is pre-stored among water pump；
2. judging temperature range locating for Tmax, gear a is obtained；
6) gear b judgement is carried out according to TEM:
1. temperature to be divided into P range from low to high, corresponding different stalls, number 1,2,3 ... successively sorts, by shelves
Position-thermometer is pre-stored among water pump；
2. judging temperature range locating for TEM, gear b is obtained；
7) take gear a, b maximum c max as water pump demand gear；
8) pump rotary speed is divided into P gear, the corresponding revolving speed of each gear, gear-revolution counter be pre-stored in water pump it
In；
9) demand gear cmax is compareed into gear-revolution counter, obtains water pump demand revolving speed, carry out revolving speed control；
10) during reading CAN message, if there is abnormal phenomenon is read, water pump is directly run with maximum speed；
11) working condition of water pump will be shown by man-machine interactive system.
Further, the control logic process of cooling system radiator fan is as follows:
1) entire car controller judges vehicle operation mode；
2) when the operating mode of vehicle is in trickle charge mode, radiator fan does not work；
3) when the operating mode of vehicle is in the mode of can travel, air-conditioner switch state is read, air-conditioning pressure piping pressure passes
Sensor signal；
4) when air-conditioning is opened, pressure value is divided into M range, corresponding different stalls d, number 1,2,3 ... from low to high
It successively sorts, when air-conditioning is closed, gear is 0, and gear-pressure gauge is pre-stored in entire car controller；
5) gear d judgement is carried out:
6) revolving speed of radiator fan is the function about gear d, water pump demand gear cmax, rotation speed of the fan-gear d- water
Relationship between demand pump gear is pre-stored in entire car controller in a tabular form；
7) entire car controller obtains radiating fan rotation speed by way of tabling look-up；
8) entire car controller sends pwm signal to radiator fan, adjusts radiating fan rotation speed.
The invention has the following beneficial effects:
1) water pump that cooling system uses has CAN communication function and self-adaptive temperature speed-regulating function, without additional control
Device and temperature sensor save hardware cost, while being conducive to different automobile types and using, and improve system versatility, hardware and software platform.
2) information such as revolving speed, working condition can be sent CAN network by CAN network by water pump, be convenient for vehicle and driving
Member's supervision.
3) cooling system of the present invention can carry out water pump turn according to automobile different working modes, different driving cycles
Velocity modulation section reduces pump Energy consumption, improves course continuation mileage；
4) cooling system of the present invention avoids water pump high-speed cruising always, extends water pump service life.
5) radiator fan of cooling system can carry out revolving speed tune according to automobile different working modes, different driving cycles
Section reduces fan energy, improves course continuation mileage, extends fan service life.
Detailed description of the invention:
Fig. 1 is the schematic diagram of the electric automobile cooling system of automatic adjusument of the present invention.
Fig. 2 is the control method schematic diagram of the electric automobile cooling system of automatic adjusument of the present invention.
Specific embodiment:
The present invention will be further described below with reference to the drawings.
The electric automobile cooling system of automatic adjusument of the present invention include man-machine interactive system, entire car controller, electricity it is mechanical, electrical
Machine controller, it is three-in-one in DC converter (DC/DC) and Vehicular charger, radiator, stepless time adjustment radiator fan, can from
Water pump, air-conditioning switch and the air-conditioning duct pressure sensor of adaptive temperature speed regulation.Wherein, cooling pipe can self-adaptive temperature
The water pump of speed regulation, it is three-in-one in DC/DC and Vehicular charger, electric machine controller, motor, radiator be sequentially connected in series；It can be adaptive
Water pump, three-in-one DC/DC and Vehicular charger, the electric machine controller, motor, entire car controller, man-machine friendship for answering temperature to adjust the speed
Mutual system is communicated by vehicle CAN network.Three-in-one in system is by DC converter (DC/DC), Vehicular charger
(OBC), high-tension distribution box forms, wherein DC converter (DC/DC), Vehicular charger need water-cooling；It is feasible in system
Sailing mode is vehicle Star grades of state；Water pump in system can carry out CAN communication with this judge automobile be driving mode or
Trickle charge mode, at the same can also by CAN network read electric machine controller, motor, it is three-in-one in DC/DC and Vehicular charger
Real time temperature, also, water pump controller is integrated in water pump, can according to the temperature information of operating mode and components into
Row rotational speed regulation；In system, A/C pressure sensor is mounted in air-conditioning pressure piping, and pressure value is corresponding with rotation speed of the fan
Relationship is pre-stored in entire car controller.In system, radiator fan can be adjusted by the pwm signal that entire car controller is sent
Speed.
The control method of the electric automobile cooling system of automatic adjusument of the present invention, process are as follows:
1) water pump reads the vehicle-state message that entire car controller issues by CAN network, judges vehicle operation mode；
2) when the operating mode of vehicle is in trickle charge mode, water pump is with minimum speed npmin operation, until automobile trickle charge
Terminate, water pump stops working；
3) when the operating mode of vehicle is in the mode of can travel, water pump reads DC/DC, motor, motor control by CAN network
Device real time temperature processed；
4) water pump calculates the maximum of T max and motor of DC/DC temperature TDC/DC and electric machine controller temperature TMCU
Temperature TEM；
5) gear a judgement is carried out according to Tmax:
1. temperature to be divided into P range from low to high, corresponding different stalls, number 1,2,3 ... successively sorts, by shelves
Position-thermometer is pre-stored among water pump；
2. judging temperature range locating for Tmax, gear a is obtained.
6) gear b judgement is carried out according to TEM:
1. temperature to be divided into P range from low to high, corresponding different stalls, number 1,2,3 ... successively sorts, by shelves
Position-thermometer is pre-stored among water pump；
2. judging temperature range locating for TEM, gear b is obtained.
7) take gear a, b maximum c max as water pump demand gear；
8) pump rotary speed is divided into P gear, the corresponding revolving speed of each gear, gear-revolution counter be pre-stored in water pump it
In；
9) demand gear cmax is compareed into gear-revolution counter, obtains water pump demand revolving speed, carry out revolving speed control.
10) during reading CAN message, if there is abnormal phenomenon is read, water pump is directly run with maximum speed；
11) working condition of water pump will be shown by man-machine interactive system.
The control logic of cooling system radiator fan is as shown in Fig. 2, its process is as follows:
1) entire car controller judges vehicle operation mode；
2) when the operating mode of vehicle is in trickle charge mode, radiator fan does not work；
3) when the operating mode of vehicle is in the mode of can travel, air-conditioner switch state is read, air-conditioning pressure piping pressure passes
Sensor signal；
4) when air-conditioning is opened, pressure value is divided into M range, corresponding different stalls d, number 1,2,3 ... from low to high
It successively sorts, when air-conditioning is closed, gear is 0, and gear-pressure gauge is pre-stored in entire car controller；
5) gear d judgement is carried out:
6) revolving speed of radiator fan is the function about gear d, water pump demand gear cmax, rotation speed of the fan-gear d- water
Relationship between demand pump gear is pre-stored in entire car controller in a tabular form；
7) entire car controller obtains radiating fan rotation speed by way of tabling look-up；
8) entire car controller sends pwm signal to radiator fan, adjusts radiating fan rotation speed.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
It for member, can also make several improvements without departing from the principle of the present invention, these improvement also should be regarded as of the invention
Protection scope.
Claims (3)
1. a kind of electric automobile cooling system of automatic adjusument, it is characterised in that: including man-machine interactive system, full-vehicle control
Device, motor, electric machine controller, it is three-in-one in DC converter (DC/DC) and Vehicular charger, radiator, stepless time adjustment dissipate
Hot-air fan, can self-adaptive temperature speed regulation water pump, cooling pipe, air-conditioning switch and air-conditioning duct pressure sensor, it is described cold
But pipeline by can self-adaptive temperature speed regulation water pump, it is three-in-one in DC/DC and Vehicular charger, electric machine controller, motor, dissipate
Hot device is sequentially connected in series；Can self-adaptive temperature speed regulation water pump, three-in-one DC/DC and Vehicular charger, electric machine controller, electricity
Machine, entire car controller, man-machine interactive system are communicated by vehicle CAN network；Three-in-one in system is by DC converting
Device (DC/DC), Vehicular charger, high-tension distribution box composition can be integrated with water pump controller in the water pump of self-adaptive temperature speed regulation,
Rotational speed regulation is carried out according to the temperature information of operating mode and components；Air-conditioning duct pressure sensor is mounted on air-conditioning high pressure
In pipeline, the corresponding relationship of pressure value and rotation speed of the fan is pre-stored in entire car controller, and stepless time adjustment radiator fan passes through whole
The pwm signal that vehicle controller is sent is adjusted the speed.
2. a kind of control method of the electric automobile cooling system of automatic adjusument, it is characterised in that: process is as follows:
1) water pump reads the vehicle-state message that entire car controller issues by CAN network, judges vehicle operation mode；
2) when the operating mode of vehicle is in trickle charge mode, water pump is with minimum speed npmin operation, until automobile trickle charge knot
Beam, water pump stop working；
3) when the operating mode of vehicle is in the mode of can travel, water pump reads DC/DC, motor, electric machine controller by CAN network
Real time temperature；
4) water pump calculates the maximum of T max and motor temperature of DC/DC temperature TDC/DC and electric machine controller temperature TMCU
TEM；
5) gear a judgement is carried out according to Tmax:
1. temperature to be divided into P range from low to high, corresponding different stalls, number 1,2,3 ... successively sorts, by gear-temperature
Degree table is pre-stored among water pump；
2. judging temperature range locating for Tmax, gear a is obtained；
6) gear b judgement is carried out according to TEM:
1. temperature to be divided into P range from low to high, corresponding different stalls, number 1,2,3 ... successively sorts, by gear-temperature
Degree table is pre-stored among water pump；
2. judging temperature range locating for TEM, gear b is obtained；
7) take gear a, b maximum c max as water pump demand gear；
8) pump rotary speed is divided into P gear, the corresponding revolving speed of each gear, gear-revolution counter is pre-stored among water pump；
9) demand gear cmax is compareed into gear-revolution counter, obtains water pump demand revolving speed, carry out revolving speed control；
10) during reading CAN message, if there is abnormal phenomenon is read, water pump is directly run with maximum speed；
11) working condition of water pump will be shown by man-machine interactive system.
3. the control method of the electric automobile cooling system of automatic adjusument as claimed in claim 2, it is characterised in that:
The control logic process of cooling system radiator fan is as follows:
1) entire car controller judges vehicle operation mode；
2) when the operating mode of vehicle is in trickle charge mode, radiator fan does not work；
3) when the operating mode of vehicle is in the mode of can travel, air-conditioner switch state, air-conditioning pressure piping pressure sensor are read
Signal；
4) when air-conditioning is opened, pressure value is divided into M range from low to high, corresponding different stalls d, number 1,2,3 ... is successively
Sequence, when air-conditioning is closed, gear is 0, and gear-pressure gauge is pre-stored in entire car controller；
5) gear d judgement is carried out:
6) revolving speed of radiator fan is the function about gear d, water pump demand gear cmax, and rotation speed of the fan-gear d- water pump needs
The relationship between gear is asked to be pre-stored in entire car controller in a tabular form；
7) entire car controller obtains radiating fan rotation speed by way of tabling look-up；
8) entire car controller sends pwm signal to radiator fan, adjusts radiating fan rotation speed.
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| CN201910001972.5A CN109649156B (en) | 2019-01-02 | 2019-01-02 | Self-adaptive adjustment electric automobile cooling system and control method thereof |
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|---|---|---|---|
| CN201910001972.5A CN109649156B (en) | 2019-01-02 | 2019-01-02 | Self-adaptive adjustment electric automobile cooling system and control method thereof |
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| CN109649156B CN109649156B (en) | 2022-02-18 |
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ID=66118744
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| CN111497597A (en) * | 2020-04-29 | 2020-08-07 | 徐州徐工挖掘机械有限公司 | Heat dissipation system of pure electric excavator and control method |
| CN112283114A (en) * | 2020-11-30 | 2021-01-29 | 南京恒天领锐汽车有限公司 | Cooling system and method for air compressor |
| CN112498091A (en) * | 2020-12-09 | 2021-03-16 | 庆铃汽车（集团）有限公司 | Pure electric vehicle control method, terminal, medium and vehicle based on NEDC working condition |
| CN112549904A (en) * | 2020-12-23 | 2021-03-26 | 摩登汽车(盐城)有限公司 | Method and system for controlling rotating speed of condensing fan of electric automobile |
| CN112895959A (en) * | 2019-12-04 | 2021-06-04 | 观致汽车有限公司 | Direct current charging control system and control method for electric vehicle |
| CN114274763A (en) * | 2020-09-27 | 2022-04-05 | 北京新能源汽车股份有限公司 | Method and device for controlling environment in vehicle |
| CN114576148A (en) * | 2020-11-30 | 2022-06-03 | 华为技术有限公司 | Liquid cooling system, control method and control device applied to liquid cooling system and vehicle |
| CN115226371A (en) * | 2022-06-09 | 2022-10-21 | 广东省智能网联汽车创新中心有限公司 | Cooling method and system of domain controller |
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| CN112549904A (en) * | 2020-12-23 | 2021-03-26 | 摩登汽车(盐城)有限公司 | Method and system for controlling rotating speed of condensing fan of electric automobile |
| CN115226371A (en) * | 2022-06-09 | 2022-10-21 | 广东省智能网联汽车创新中心有限公司 | Cooling method and system of domain controller |
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| CN109649156B (en) | 2022-02-18 |
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Denomination of invention: An Adaptive Regulating Cooling System for Electric Vehicles and Its Control Method Granted publication date: 20220218 Pledgee: China Construction Bank Corporation Nanjing Lishui sub branch Pledgor: NANJING GOLDEN DRAGON BUS Co.,Ltd. Registration number: Y2024980017170 |