CN111267619B - New energy automobile cooling fan control method - Google Patents

New energy automobile cooling fan control method Download PDF

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Publication number
CN111267619B
CN111267619B CN202010131754.6A CN202010131754A CN111267619B CN 111267619 B CN111267619 B CN 111267619B CN 202010131754 A CN202010131754 A CN 202010131754A CN 111267619 B CN111267619 B CN 111267619B
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CN
China
Prior art keywords
cooling fan
motor
condition
met
temperature
Prior art date
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Application number
CN202010131754.6A
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Chinese (zh)
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CN111267619A (en
Inventor
付晓宇
徐康
施龙
谢芳芳
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Baic Heavy Truck Co Ltd
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Baic Heavy Truck Co Ltd
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Priority to CN202010131754.6A priority Critical patent/CN111267619B/en
Publication of CN111267619A publication Critical patent/CN111267619A/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
    • B60L3/0023—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train
    • B60L3/0061—Detecting, eliminating, remedying or compensating for drive train abnormalities, e.g. failures within the drive train relating to electrical machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00357—Air-conditioning arrangements specially adapted for particular vehicles
    • B60H1/00385—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell
    • B60H1/00392—Air-conditioning arrangements specially adapted for particular vehicles for vehicles having an electrical drive, e.g. hybrid or fuel cell for electric vehicles having only electric drive means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/0065—Control members, e.g. levers or knobs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00735—Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00642—Control systems or circuits; Control members or indication devices for heating, cooling or ventilating devices
    • B60H1/00814—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation
    • B60H1/00821—Control systems or circuits characterised by their output, for controlling particular components of the heating, cooling or ventilating installation the components being ventilating, air admitting or air distributing devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
    • B60H2001/003—Component temperature regulation using an air flow
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
    • Y02T10/88—Optimized components or subsystems, e.g. lighting, actively controlled glasses

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Electric Propulsion And Braking For Vehicles (AREA)

Abstract

The invention provides a new energy automobile cooling fan control method. The whole vehicle controller judges whether the motor system has abnormal temperature rise according to the actual output power of the motor, the temperature of the motor controller and the temperature of the motor, so as to judge whether the cooling system works normally or not, and conduct fault reporting when abnormal, a complete cooling system control strategy is provided, effective fault prevention is achieved, accurate cooling system countermeasure is timely made, normal output of vehicle power is guaranteed, and the control of the cooling fan of the new energy vehicle has the advantages of accurate countermeasure, rapid response and high efficiency.

Description

New energy automobile cooling fan control method
Technical Field
The invention belongs to the technical field of new energy automobiles, and particularly relates to a new energy automobile cooling fan control method.
Background
Along with the continuous improvement of intelligent requirements of vehicles, consumers have not only the function of analyzing faults, but also the function of finding faults in advance, so that the occurrence rate of the faults is reduced to the minimum, and the safety coefficient of vehicle driving is improved. This requires that a reliable strategy must be taken to ensure proper operation of the vehicle powertrain, and efficient control and fault identification of the cooling system is one of the key factors affecting proper output of vehicle power. The existing new energy automobiles lack a complete cooling system control strategy, so that the part of cooling system monitoring cannot effectively foresee faults, corresponding cooling system control measures cannot be timely made, and normal output of vehicle power cannot be guaranteed.
Disclosure of Invention
In order to solve the technical problems, the invention provides a new energy automobile cooling fan control method.
The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview and is intended to neither identify key/critical elements nor delineate the scope of such embodiments. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is presented later.
The invention adopts the following technical scheme:
in some alternative embodiments, a new energy automobile cooling fan control method is provided, including:
after the cooling fan starts to run, the whole vehicle controller judges whether the cooling fan stopping condition is met;
if the cooling fan stopping condition is met, the whole vehicle controller controls the cooling fan relay to be disconnected, and the cooling fan stops working, otherwise, the whole vehicle controller judges whether a fault reporting condition is met, if the fault reporting condition is met, the fault information of the cooling system is reported, the output power of the vehicle power system is limited, and otherwise, the step of judging whether the cooling fan stopping condition is met is returned;
the condition of meeting the fault declaration refers to that one of two conditions that the temperature of a motor controller is higher than 87 ℃ and the temperature of the motor is higher than 165 ℃ is met while the condition that the actual power of a continuous 2-second motor is lower than or equal to the rated power of the motor is met.
In some alternative embodiments, the satisfaction of the cooling fan stop condition refers to the satisfaction of three conditions, namely, the invalidity of the air conditioner AC request, the motor controller temperature being less than 65 ℃ and the motor temperature being less than 75 ℃, simultaneously.
In some alternative embodiments, the method further comprises before: the whole vehicle controller judges whether the vehicle is in a driving mode or not; if the vehicle is in the driving mode, judging whether the working condition of the cooling fan is met; if the working conditions of the cooling fan are met, the whole vehicle controller controls the cooling fan relay to be closed, and the cooling fan starts to run.
In some alternative embodiments, the condition for satisfying the operation of the cooling fan means that the vehicle currently satisfies at least one of three conditions, that is, that the air conditioner AC request is valid, that the motor controller temperature is greater than 65 ℃, and that the motor temperature is greater than 75 ℃.
The invention has the beneficial effects that: the whole vehicle controller judges whether the motor system has abnormal temperature rise according to the actual output power of the motor, the temperature of the motor controller and the temperature of the motor, so as to judge whether the cooling system works normally or not, and conduct fault reporting when abnormal, a complete cooling system control strategy is provided, effective fault prevention is achieved, accurate cooling system countermeasure is timely made, normal output of vehicle power is guaranteed, and the control of the cooling fan of the new energy vehicle has the advantages of accurate countermeasure, rapid response and high efficiency.
Drawings
FIG. 1 is a schematic flow chart of a new energy automobile cooling fan control method of the invention;
FIG. 2 is a schematic diagram of a cooling fan management system.
Detailed Description
The following description and the drawings sufficiently illustrate specific embodiments of the invention to enable those skilled in the art to practice them. Other embodiments may involve structural, logical, electrical, process, and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in, or substituted for, those of others.
As shown in fig. 1 and 2, in some illustrative embodiments, a new energy vehicle cooling fan control method is provided, including:
101: the vehicle controller judges whether the vehicle is in a driving mode, if the judgment result is that the vehicle is in the driving mode, the step 102 is carried out, otherwise, the step 101 is returned. The driving mode refers to a driving permission state, and can be stationary or in driving. The whole vehicle controller detects that each part does not report three-level faults, and when the whole vehicle is in a Ready state, the vehicle can be confirmed to be in a driving mode.
102: the vehicle controller judges whether the cooling fan working condition is met, if so, the step 103 is carried out, otherwise, the step 102 is returned.
Wherein, the condition of meeting the cooling fan operation refers to at least one condition of the vehicle meeting the condition that the air conditioner AC request is effective, the temperature of the motor controller is more than 65 ℃, and the temperature of the motor is more than 75 ℃.
The air conditioner AC request refers to an AC key of an air conditioner control panel, and 12V electricity is supplied to the whole vehicle controller when the AC key is pressed, and control information of the air conditioner is contained.
103: and the whole vehicle controller controls the cooling fan relay to be closed, and the cooling fan starts to run.
104: after the cooling fan starts to run, the vehicle controller judges whether the cooling fan stopping condition is met, if the judging result is that the cooling fan stopping condition is met, step 105 is performed, and otherwise step 106 is performed.
Wherein, the condition of meeting the cooling fan stop refers to simultaneously meeting three conditions of invalid air conditioner AC request, motor controller temperature less than 65 ℃ and motor temperature less than 75 ℃.
105: and the whole vehicle controller controls the cooling fan relay to be disconnected, and the cooling fan stops working.
106: the vehicle controller judges whether the fault reporting condition is met, if yes, the step 107 is performed, otherwise, the step 104 is returned.
The condition of meeting fault declaration refers to that when the actual power of the motor is less than or equal to the rated power of the motor for 2 seconds continuously, one of two conditions that the temperature of a motor controller is more than 87 ℃ and the temperature of the motor is more than 165 ℃ is met.
107: and reporting cooling system fault information, namely sending a message to the CAN bus, wherein a vehicle instrument CAN display the cooling system fault information and limit the output power of a vehicle power system. Limiting the output power of a vehicle power system means that the output power is reduced when the vehicle has a cooling fault, firstly, the acceleration is reduced to ensure the safety of the vehicle, and secondly, the components are prevented from being burnt out.
The invention uses the whole vehicle controller, the cooling fan, the motor controller and the motor, the whole vehicle controller sends the fan working control signal to close the cooling fan relay so that the fan can operate according to the control signal; the whole vehicle controller judges whether the motor system has abnormal temperature rise according to the actual output power fed back by the motor system through the CAN bus, the temperature of the motor controller and the temperature of the motor, thereby judging whether the cooling system works normally. The complete cooling system control strategy is provided, and faults are effectively prevented, so that accurate cooling system countermeasures are timely made, normal output of vehicle power is guaranteed, and the control of the cooling fan of the new energy automobile has the advantages of accurate countermeasures, rapid response and high efficiency.
Those of skill would further appreciate that the various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both. To clearly illustrate this interchangeability of hardware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

Claims (4)

1. The new energy automobile cooling fan control method is characterized by comprising the following steps:
after the cooling fan starts to run, the whole vehicle controller judges whether the cooling fan stopping condition is met;
if the cooling fan stopping condition is met, the whole vehicle controller controls the cooling fan relay to be disconnected, and the cooling fan stops working, otherwise, the whole vehicle controller judges whether a fault reporting condition is met, if the fault reporting condition is met, the fault information of the cooling system is reported, the output power of the vehicle power system is limited, and otherwise, the step of judging whether the cooling fan stopping condition is met is returned;
the condition of meeting the fault declaration refers to that one of two conditions that the temperature of a motor controller is higher than 87 ℃ and the temperature of the motor is higher than 165 ℃ is met while the condition that the actual power of a continuous 2-second motor is lower than or equal to the rated power of the motor is met.
2. The method according to claim 1, wherein the satisfaction of the cooling fan stop condition is simultaneous satisfaction of three conditions of an air conditioner AC request being invalid, a motor controller temperature being less than 65 ℃, and a motor temperature being less than 75 ℃.
3. The new energy automobile cooling fan control method according to claim 2, characterized in that the method further comprises before:
the whole vehicle controller judges whether the vehicle is in a driving mode or not;
if the vehicle is in the driving mode, judging whether the working condition of the cooling fan is met;
if the working conditions of the cooling fan are met, the whole vehicle controller controls the cooling fan relay to be closed, and the cooling fan starts to run.
4. The method according to claim 3, wherein the condition for satisfying the operation of the cooling fan is at least one condition among three conditions that the vehicle currently satisfies the AC request for the air conditioner to be effective, the temperature of the motor controller to be greater than 65 ℃, and the temperature of the motor to be greater than 75 ℃.
CN202010131754.6A 2020-02-29 2020-02-29 New energy automobile cooling fan control method Active CN111267619B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010131754.6A CN111267619B (en) 2020-02-29 2020-02-29 New energy automobile cooling fan control method

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Application Number Priority Date Filing Date Title
CN202010131754.6A CN111267619B (en) 2020-02-29 2020-02-29 New energy automobile cooling fan control method

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CN111267619B true CN111267619B (en) 2023-07-25

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115373440B (en) * 2022-10-24 2023-03-24 武汉亿纬储能有限公司 Temperature control method for battery energy distribution unit

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002343449A (en) * 2001-05-16 2002-11-29 Nissan Motor Co Ltd Failure determination device for cooling device
CN107433881A (en) * 2016-11-23 2017-12-05 北京新能源汽车股份有限公司 A kind of control method and device of vehicular electric machine cooling system failure
CN107471989A (en) * 2016-12-23 2017-12-15 宝沃汽车（中国）有限公司 Method for controlling cooling system, cooling system and vehicle
CN107472026A (en) * 2016-10-28 2017-12-15 宝沃汽车（中国）有限公司 Fault handling method, system and the vehicle of electromotor cooling system
CN109398093A (en) * 2018-12-07 2019-03-01 安徽华菱汽车有限公司 A kind of control method of electronic radiator fan, system, device and pure electric vehicle

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4290461B2 (en) * 2003-04-03 2009-07-08 株式会社日立製作所 Cooling system and cooling control method for electric device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002343449A (en) * 2001-05-16 2002-11-29 Nissan Motor Co Ltd Failure determination device for cooling device
CN107472026A (en) * 2016-10-28 2017-12-15 宝沃汽车（中国）有限公司 Fault handling method, system and the vehicle of electromotor cooling system
CN107433881A (en) * 2016-11-23 2017-12-05 北京新能源汽车股份有限公司 A kind of control method and device of vehicular electric machine cooling system failure
CN107471989A (en) * 2016-12-23 2017-12-15 宝沃汽车（中国）有限公司 Method for controlling cooling system, cooling system and vehicle
CN109398093A (en) * 2018-12-07 2019-03-01 安徽华菱汽车有限公司 A kind of control method of electronic radiator fan, system, device and pure electric vehicle

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Address after: 213000 No. 18, Shaoshan Road, high tech Zone, Xinbei District, Changzhou City, Jiangsu Province

Applicant after: BAIC heavy truck Co.,Ltd.

Address before: No.18, Shaoshan Road, high tech Zone, Xinbei District, Changzhou City, Jiangsu Province 2133133

Applicant before: BAIC (CHANGZHOU) AUTOMOBILE Co.,Ltd.

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