CN104210331A - Cooling system for hybrid car - Google Patents

Cooling system for hybrid car Download PDF

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Publication number
CN104210331A
CN104210331A CN201410379930.2A CN201410379930A CN104210331A CN 104210331 A CN104210331 A CN 104210331A CN 201410379930 A CN201410379930 A CN 201410379930A CN 104210331 A CN104210331 A CN 104210331A
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CN
China
Prior art keywords
cooling
fan
temperature
management
hybrid vehicle
Prior art date
Application number
CN201410379930.2A
Other languages
Chinese (zh)
Inventor
张广俊
唐宏柯
Original Assignee
天津市松正电动汽车技术股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Application filed by 天津市松正电动汽车技术股份有限公司 filed Critical 天津市松正电动汽车技术股份有限公司
Priority to CN201410379930.2A priority Critical patent/CN104210331A/en
Publication of CN104210331A publication Critical patent/CN104210331A/en

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Abstract

The invention discloses a cooling system for a hybrid car. Each cooling device is provided with a group of fans for heat radiation, each system is provided with a temperature collection device for monitoring the temperature on each point and transmitting the temperature to a cooling management system, and a purpose of closed-loop control is achieved through proportional regulation and integral regulation.

Description

A kind of hybrid vehicle cooling system
Technical field
The present invention relates to a kind of cooling system for vehicle, be specifically related to a kind of hybrid vehicle cooling system.
Technical background
The cooling object of existing hybrid vehicle cooling system generally comprises driving engine, electrical motor, electric machine controller, air-conditioning compressor etc., driving engine and electrical motor provide power for vehicle, motor controller controls motor rotation, said apparatus all can produce a large amount of heats in operational process, particularly on hybrid-power bus, due to the problem that vehicle body is heavy, passenger capacity is many, make the power of the devices such as driving engine, electrical motor, controller of hybrid-power bus very large, the heat of generation is also just more; In hot summer, the period of service of air-conditioning is very long and power is very high, and this just causes the use of air-conditioning compressor also can produce a lot of heats, if can not in time heat be dissipated, can affect normal operation, when serious, even can burn.
Traditional radiating mode is that the moving fan of engine direct tape splicing comes to dispel the heat to vehicle cooling device, rotation speed of the fan will be along with the rising of the output speed of driving engine and is risen, declines and decline like this, thus, too low or the too high situation of temperature that just there will be driving engine, affect the operating temperature of driving engine, reduce engine operation efficiency; And the driving engine of motor vehicle driven by mixed power is not always in running order, this will cause driving separately fan cooling to be not enough to meet radiating requirements by driving engine.
For overcoming the above problems, the present invention adopts a kind of new hybrid vehicle cooling system, for each cooling mechanism, place respectively one group of fan for giving heat radiation, and at each device place, leave temperature collecting device and monitor each point temperature and send cooling management system to, reach the object of closed loop control.
Summary of the invention
The present invention is for the heat dissipation problem that solves each electro-heat equipment of hybrid electric vehicle, at each cooling mechanism place of hybrid power, place respectively one group of fan for to each system radiating, and at each system place, leave temperature collecting device and monitor each point temperature and send cooling management system to, reach the object of closed loop control.
For achieving the above object, technical scheme of the present invention is:
A kind of hybrid vehicle cooling system, comprise cooling mechanism, fan electromotor, fan, described fan electromotor is connected with described fan, described fan is placed near described cooling mechanism, also comprise cooling management system, temperature collecting device, described fan electromotor is connected with described cooling management system, and described temperature collecting device is connected with described cooling mechanism, and is connected with cooling management system.
Described cooling system is controlled step:
(1) gather Current Temperatures T0;
(2) compare T0 and capping temperature value T1, if T0>T1 starts fan; Otherwise, stop fan;
(3) start after fan, gather t temperature T t and next moment temperature T t+ Δ t constantly;
(4) compare Tt and Tt+ Δ t, if Tt+ Δ t>Tt chooses first group of PI adjustment factor and regulates temperature; Otherwise, choose second group of PI adjustment factor and regulate temperature;
(5) compare Tt+ Δ t and set lower-limit temperature value T2, if Tt+ Δ t<T2 stops fan; Otherwise, return to (3) step and continue collecting temperature.
Described fan electromotor is DC brushless motor.
Described fan, fan electromotor are same model.
Compare existing hybrid power cooling system, the present invention has remarkable advantage and beneficial effect, is embodied as:
1, use cooling system of the present invention, realize closed loop control, effectively control engine operating temperature, improves engine operation efficiency;
2, use cooling system of the present invention, adopt brushless motor, improve the radiating efficiency of fan.
Accompanying drawing explanation
Fig. 1 is hybrid vehicle cooling system structure schematic diagram of the present invention;
Fig. 2 is hybrid vehicle cooling system workflow diagram of the present invention.
The specific embodiment
Specific embodiment of the invention method is as follows:
For traditional cooling system for vehicle, mainly by driven by engine fan, dispelled the heat, so just make fan always in running order, in the situation that not needing heat radiation, fan can not quit work yet, caused the waste of ability, and the rotating speed of fan also can not increase or reduce according to temperature, this will cause driving engine not in optimum working temperature, thereby has reduced engine operation efficiency; And for motor vehicle driven by mixed power, driving engine is not necessarily always in running order, so can not meet the demand of vehicle heat radiation completely by driven by engine fan work.Hybrid vehicle cooling system provided by the invention, cooling mechanism for motor vehicle driven by mixed power has designed a set of cooling system and control method thereof, motor vehicle driven by mixed power cooling mechanism comprises driving engine, motor, electric machine controller, air-conditioning compressors etc. need the device of heat radiation, at above-mentioned each device place, fan is set, for all fans, use the unified control of cooling management system, and monitor everywhere temperature feedback to cooling management system with temperature collecting device, with this, reach real-time actv. and control unlatching and the shutoff of respectively organizing fan, accelerate and slow down, realize closed loop control.
Below in conjunction with accompanying drawing, illustrate hybrid vehicle cooling system of the present invention:
As shown in Figure 1, hybrid vehicle cooling system of the present invention comprises cooling management system, fan electromotor, fan, cooling mechanism, temperature collecting device etc.Described cooling management system is connected with described fan electromotor, described fan is connected with described fan electromotor, described fan is placed near the device place of the needs heat radiations such as described cooling mechanism, in order to give each device radiation, described temperature collecting device is connected with described cooling mechanism, for each unit temp of Real-Time Monitoring, described temperature collecting device is connected with described cooling management system, the temperature that described temperature collecting device gathers monitoring sends to described cooling management system, cooling management system adoption rate regulates and integral adjustment is realized each cooling mechanism temperature of closed loop control.
Described cooling mechanism comprises engine water tank, engine intercooler, motor and controller, air-conditioning compressor etc., described fan electromotor adopts DC brushless motor, there is higher work efficiency, described motor comprises drive motor, electrical generator, described electric machine controller comprises drive motor controller, engine controller, and described temperature collecting device is temperature sensor etc. can gather and transmit the device of temperature.
For series parallel hybrid power vehicle, when starting or low speed driving, driving engine does not start, and by drive motor, drives vehicle operating; During high speed, engine direct drives, and motor does not provide driving power; When climbing or acceleration, by driving engine and motor, jointly drive vehicle; When sliding or braking, by electrical generator by recover kinetic energy to power supply.
Below in conjunction with Fig. 2, illustrate the working process of this cooling system, Fig. 2 is the workflow diagram of cooling system of the present invention, be placed in driving engine, motor, controller, each unit temp data of the temperature collecting device Real-time Collection at the cooling mechanism places such as air-conditioning compressor also transfer data to cooling management system, when temperature surpasses the upper limit T1 of set temperature, start fan, with an initial speed, rotate, then at t, constantly gather now cooling mechanism temperature value Tt, and gather next temperature value Tt+ Δ t constantly, compare Tt+ Δ t and Tt, if Tt+ Δ t>Tt, be that temperature is in ascent stage, choosing first group of proportional control coefficient and integral adjustment coefficient comes fast speed to promote rotation speed of the fan, to reach the effect of dispelling the heat to cooling mechanism fast, if Tt+ Δ t≤Tt, temperature, in the decline stage, is now chosen second group of proportional control coefficient and integral adjustment coefficient and is carried out reduction rotation speed of the fan slowly, and the temperature feedback that constantly detects cooling mechanism is to cooling management system, when temperature is during lower than lower limit T2, stopping fan rotation, otherwise continue to gather a certain moment temperature of cooling mechanism and next temperature constantly, and repeat appeal process, with this, reach the effect of closed loop control.Above-mentioned first group of proportional control coefficient and integral adjustment coefficient are greater than second group of proportional control coefficient and integral adjustment coefficient, can guarantee that like this cooling mechanism temperature fan when rising can raise rapidly to reduce unit temp, and slowly reduce rotation speed of the fan in the cooling mechanism temperature decline stage, prevent that rotating speed from reducing suddenly the rise of cooling mechanism temperature.By cooling management system, fan electromotor, fan, temperature collecting device, form a closed loop like this, actv. is controlled temperature everywhere in real time, when can not need somewhere again heat radiation, do not reduce this place's fan motor rotational speed or stop this place's fan motor runs, save the energy.This closed cycle cooling system can guarantee that the temperature of each cooling mechanism maintains a stable value, and this has just guaranteed that the operating temperature of driving engine continues, at best state, to have improved the work efficiency of driving engine; And described fan electromotor is DC brushless motor, has greatly improved motor working efficiency.
The fan, the fan electromotor that the present invention is directed to cooling system of hybrid vehicle development are same model, convenient installation, and for follow-up maintenance brought convenient.
For being one exemplary embodiment of the present invention; should be understood to is a certain demonstrative example wherein in the protection domain of claims of the present invention; there is the directiveness effect that those skilled in the art is realized to corresponding technical scheme, but not limitation of the invention.

Claims (4)

1. a hybrid vehicle cooling system, comprises cooling mechanism, fan electromotor, fan, and described fan electromotor is connected with described fan, and described fan is placed near described cooling mechanism; It is characterized in that: also comprise cooling management system, temperature collecting device, described fan electromotor is connected with described cooling management system, and described temperature collecting device is connected with described cooling mechanism, and is connected with cooling management system.
2. hybrid vehicle cooling system according to claim 1, is characterized in that: described cooling system is controlled step and is:
(1) gather Current Temperatures T0;
(2) compare T0 and capping temperature value T1, if T0>T1 starts fan; Otherwise, stop fan;
(3) start after fan, gather t temperature T t and next moment temperature T t+ Δ t constantly;
(4) compare Tt and Tt+ Δ t, if Tt+ Δ t>Tt chooses first group of PI adjustment factor and regulates temperature; Otherwise, choose second group of PI adjustment factor and regulate temperature;
(5) compare Tt+ Δ t and set lower-limit temperature value T2, if Tt+ Δ t<T2 stops fan; Otherwise, return to (3) step and continue collecting temperature.
3. hybrid vehicle cooling system according to claim 1, is characterized in that: described fan electromotor is DC brushless motor.
4. hybrid vehicle cooling system according to claim 1, is characterized in that: described fan, fan electromotor are same model.
CN201410379930.2A 2014-08-04 2014-08-04 Cooling system for hybrid car CN104210331A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410379930.2A CN104210331A (en) 2014-08-04 2014-08-04 Cooling system for hybrid car

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201410379930.2A CN104210331A (en) 2014-08-04 2014-08-04 Cooling system for hybrid car

Publications (1)

Publication Number Publication Date
CN104210331A true CN104210331A (en) 2014-12-17

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CN201410379930.2A CN104210331A (en) 2014-08-04 2014-08-04 Cooling system for hybrid car

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100245693B1 (en) * 1996-11-29 2000-04-01 정몽규 Apparatus and method for cooling battery of electric vehicle
CN101216042A (en) * 2008-01-04 2008-07-09 广东大华仁盛科技有限公司 Cooling fan control device and method
CN101549637A (en) * 2009-05-12 2009-10-07 奇瑞汽车股份有限公司 Electric automobile cooling system and control method thereof
KR20100074393A (en) * 2008-12-24 2010-07-02 두산인프라코어 주식회사 Engine room cooling system using an electric fan
CN101811434A (en) * 2010-03-30 2010-08-25 广州大华德盛科技有限公司 Coach thermal management system and control method of fan set thereof
CN101825110A (en) * 2010-04-29 2010-09-08 烟台汽车工程职业学院 Method for controlling rotating speed of engine cooling fan
CN101879859A (en) * 2010-06-11 2010-11-10 奇瑞汽车股份有限公司 Electric vehicle cooling system and control method thereof
CN204109741U (en) * 2014-08-04 2015-01-21 天津市松正电动汽车技术股份有限公司 A kind of hybrid vehicle cooling system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100245693B1 (en) * 1996-11-29 2000-04-01 정몽규 Apparatus and method for cooling battery of electric vehicle
CN101216042A (en) * 2008-01-04 2008-07-09 广东大华仁盛科技有限公司 Cooling fan control device and method
KR20100074393A (en) * 2008-12-24 2010-07-02 두산인프라코어 주식회사 Engine room cooling system using an electric fan
CN101549637A (en) * 2009-05-12 2009-10-07 奇瑞汽车股份有限公司 Electric automobile cooling system and control method thereof
CN101811434A (en) * 2010-03-30 2010-08-25 广州大华德盛科技有限公司 Coach thermal management system and control method of fan set thereof
CN101825110A (en) * 2010-04-29 2010-09-08 烟台汽车工程职业学院 Method for controlling rotating speed of engine cooling fan
CN101879859A (en) * 2010-06-11 2010-11-10 奇瑞汽车股份有限公司 Electric vehicle cooling system and control method thereof
CN204109741U (en) * 2014-08-04 2015-01-21 天津市松正电动汽车技术股份有限公司 A kind of hybrid vehicle cooling system

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Application publication date: 20141217