CN107150570B - A kind of new-energy automobile heating control method - Google Patents
A kind of new-energy automobile heating control method Download PDFInfo
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- CN107150570B CN107150570B CN201710233479.7A CN201710233479A CN107150570B CN 107150570 B CN107150570 B CN 107150570B CN 201710233479 A CN201710233479 A CN 201710233479A CN 107150570 B CN107150570 B CN 107150570B
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- 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
- B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
- B60H1/03—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant and from a source other than the propulsion plant
- B60H1/034—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant and from a source other than the propulsion plant from the cooling liquid of the propulsion plant and from an electric heating device
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- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
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- Mechanical Engineering (AREA)
- Air-Conditioning For Vehicles (AREA)
Abstract
The present invention provides a kind of new-energy automobile heating control method, comprising: after the engine started, judges whether engine water temperature reaches the first temperature threshold, if not up to the first temperature threshold, controls water flow by water pump waterway circulating；If reaching the first temperature threshold, water flow is then controlled by engine waterway circulating, then further judge whether engine water temperature reaches second temperature threshold value, if reaching second temperature threshold value, then switch off the pump when crew module is without heating demand water route and engine water route, and water flow is controlled when crew module has heating demand simultaneously by water pump water route and engine waterway circulating.The present invention had both met crew module's heating demand, while guaranteeing that crew module's air outlet temperature is smooth, and ptc heater working time and power are reduced under certain operating conditions, and using electricity wisely improves mileage.
Description
Technical field
The present invention relates to technical field of new energy more particularly to a kind of new-energy automobile heating control methods.
Background technique
New energy vehicle heating system at present, by increasing positive temperature coefficient PTC(Positive Temperature
Coefficient) heater, by PTC heated cooling fluid, is recycled to warm air system and then promotion multiplies when engine does not work
Member cabin temperature；It waits when the engine operates, cuts off PTC, the heat generated by engine is recycled to heater cores.
In the above scheme, under low temperature when engine is just started to work, water temperature is lower, and crew module cannot quickly rise
Temperature；When engine operation is switched to not operation, water temperature drop is it is obvious that temperature fluctuation occurs in crew module.
Summary of the invention
Technical problem to be solved by the present invention lies in provide a kind of new-energy automobile heating control method, to guarantee to send out
There is not larger fluctuation in motivation water temperature, keeps crew module's air outlet temperature more smooth, improves crew module's comfort.
In order to solve the above technical problem, the present invention provides a kind of new-energy automobile heating control methods, comprising:
After the engine started, judge whether engine water temperature reaches the first temperature threshold, if not up to the first temperature
Threshold value then controls water flow by water pump waterway circulating；If reaching the first temperature threshold, controls water flow and followed by engine water route
Then ring further judges whether engine water temperature reaches second temperature threshold value, if reaching second temperature threshold value, in occupant
Switch off the pump water route and engine water route when cabin is without heating demand, and water flow is controlled when crew module has heating demand simultaneously by water
Pump road and engine waterway circulating；
The control water flow refers to the water flow of water pump successively through water pump, ratio triple valve, positive temperature in water pump waterway circulating
FACTOR P TC heater enters heater cores, and the control water flow refers to that the hot water of engine successively passes through by engine waterway circulating
Engine, ratio triple valve, positive temperature coefficient ptc heater enter heater cores.
Wherein, the control method further include: electronic control unit ECU is according to outside temperature, vehicle interior temperature, air-conditioning panel
Upper set temperature calculates air outlet target temperature, and obtains ptc heater operating temperature further according to the air outlet target temperature,
Then corresponding instruction control ptc heater work is sent in the operating temperature.
Wherein, the mode for calculating the air outlet target temperature is: to set temperature on air-conditioning panel and first constant
Product, the product of vehicle interior temperature and second constant, the product and the summation of the 4th constant of outside temperature collection value and three constant.
Wherein, described that ptc heater operating temperature is obtained according to the air outlet target temperature, specifically go out according to
The corresponding relationship chart of air port target temperature and ptc heater operating temperature obtains a certain air outlet target temperature by inquiry
Corresponding ptc heater operating temperature.
Wherein, the water flow that controls when crew module has heating demand is simultaneously by water pump water route and engine waterway circulating,
Specifically ECU sends control instruction driving ratio triple valve and opens engine water route and water pump water route, by adjusting ratio threeway
The aperture of valve controls the flow proportional in engine water route and water pump water route, and the water of hot engine water and water pump flows through ratio three
Port valve enters ptc heater and heater cores after mixing.
Wherein, whether crew module has heating demand is specifically whether to be lower than heating temperature threshold value according to target air outlet temperature
Judge, if target air outlet temperature is lower than heating temperature threshold value, judges that crew module does not have heating demand, if target goes out
Draught temperature is greater than or equal to heating temperature threshold value, then judges that crew module has heating demand.
Wherein, the control method further include: when engine is switched to off position by working, ECU sends control
Order-driven ratio triple valve opens water pump water route, is controlled by adjusting aperture and the electronic water pump for engine of ratio triple valve
The flow proportional in engine water route and water pump water route processed, make water flow gradually by by engine water route cyclic switching to by water pump water route
Circulation.
Wherein, the control method further include: when engine is switched to working condition by not working, ECU sends control
Order-driven ratio triple valve opens water pump water route, controls engine water route and water pump by adjusting the aperture of ratio triple valve
The flow proportional in water route makes water flow gradually by being switched to by water pump waterway circulating by engine waterway circulating.
Wherein, first temperature threshold is 50 DEG C, and the second temperature threshold value is 90 DEG C.
The beneficial effect of the embodiment of the present invention is: the present invention had both met crew module's heating demand, while guaranteeing occupant
Cabin air outlet temperature is smooth, and ptc heater working time and power are reduced under certain operating conditions, and using electricity wisely improves mileage.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the connection relationship diagram of new-energy automobile heating system in the embodiment of the present invention.
Fig. 2 is a kind of flow diagram of new-energy automobile heating control method of the embodiment of the present invention.
Fig. 3 is the correspondence diagram of air outlet target temperature and ptc heater operating temperature in the embodiment of the present invention.
Specific embodiment
The explanation of following embodiment be with reference to attached drawing, can be to the specific embodiment implemented to the example present invention.
Fig. 1 is the connection relationship diagram of new-energy automobile heating system in the embodiment of the present invention, wherein ratio triple valve
It connect, the connection of the heater cores of ptc heater and Heating,Ventilating and Air Conditioning, water pump and starts with engine, ptc heater and water pump respectively
Machine is also connect with the heater cores of Heating,Ventilating and Air Conditioning respectively, forms two kinds of water flow circuits: (1) water pump water route: water pump --- ratio three
Port valve --- ptc heater --- heater cores；(2) engine water route: engine --- ratio triple valve --- PTC heating
Device --- heater cores --- engine.
Referring again to shown in Fig. 2, the embodiment of the present invention provides a kind of new-energy automobile heating control method, comprising:
After the engine started, judge whether engine water temperature reaches the first temperature threshold, if not up to the first temperature
Threshold value then controls water flow by water pump waterway circulating；If reaching the first temperature threshold, controls water flow and followed by engine water route
Ring, while further judging whether engine water temperature reaches second temperature threshold value, if reaching second temperature threshold value, in occupant
Switch off the pump water route and engine water route when cabin is without heating demand, and water flow is controlled when crew module has heating demand simultaneously by water
Pump road and engine waterway circulating；
The control water flow refers to that the water flow of water pump is successively heated through water pump, ratio triple valve, PTC in water pump waterway circulating
Device enters heater cores, and the control water flow refers to the hot water of engine successively through engine, ratio in engine waterway circulating
Triple valve, ptc heater enter heater cores.
Specifically, when engine just starts, engine water temperature is lower, by the first temperature threshold of setting as control
The foundation of water circulation, during engine water temperature rises to first temperature threshold, electronic control unit ECU sends control and refers to
It enabling driving ratio triple valve cut off engine water route, is connected to water pump circuit, the water of water pump flows through ratio triple valve by water pump, into
Enter ptc heater, by entering heater cores after ptc heater fast lifting water temperature, meets crew module's heating demand, this circuit is such as
In Fig. 1 shown in dotted arrow frame 1.ECU calculates air outlet according to set temperature on outside temperature, vehicle interior temperature, air-conditioning panel
Target temperature, and ptc heater operating temperature is obtained, corresponding instruction control ptc heater work is then sent in the work
Temperature, the water of heating pump, fast lifting crew module's temperature.In the present embodiment, the first temperature threshold is set as 50 DEG C.
If engine operation for a period of time after, engine water temperature be higher than the first temperature threshold, ECU send control instruction make
It obtains ratio triple valve and opens engine water route, switch off the pump circuit, and the hot water of engine is heated through ratio triple valve into PTC
Device, heater cores meet crew module's heating demand, this circuit is as shown in figure 1 shown in dotted arrow frame 2.Similarly, ECU root at this time
Air outlet target temperature is calculated according to set temperature on outside temperature, vehicle interior temperature, air-conditioning panel, and obtains ptc heater work
Make temperature, driving ptc heater work can gradually reduce PTC in the operating temperature, and due to introducing hot engine water
Heater power meets crew module's heating demand while achieving the purpose that using electricity wisely.
Engine water temperature will continue to increase with engine continuous work, therefore need to further determine whether to reach the second temperature
It is excessively high to avoid engine water temperature to spend threshold value.If not up to second temperature threshold value, control water flow is continued to by engine water
Whether road circulation has heating demand to be respectively controlled if the present embodiment if having reached second temperature threshold value according to crew module,
Specifically, whether heating temperature threshold value is lower than according to target air outlet temperature to determine whether there is heating demand, if target goes out
Draught temperature is lower than heating temperature threshold value (such as summer), then shows that crew module does not have heating demand；, whereas if target outlet air
Mouth temperature is greater than or equal to heating temperature threshold value, then shows that crew module has heating demand.
When crew module is without heating demand, ECU sends control instruction and ratio triple valve is made to close engine water route, closes water
Road is pumped, water flow does not recycle, while water air pump inoperative；If crew module has heating demand, ECU sends control instruction and makes ratio
Triple valve opens engine water route, opens water pump water route, and the hot water of engine and the water of water pump flow through ratio triple valve, enters
Ptc heater meets crew module's heating demand, i.e. water flow simultaneously by entering heater cores after ptc heater fast lifting water temperature
By circuit cycle shown in dotted arrow frame 1,2 in Fig. 1.ECU can calculate a suitable outlet air according to crew module's heating demand
Mouth target temperature, driving ratio triple valve are opened in suitable aperture, and the flow proportional in engine water route and water pump water route is controlled,
Meet crew module's heating demand while control flows through the water temperature of ptc heater in reasonable temperature range.In the present embodiment, second
Temperature threshold is set as 90 DEG C.
As previously mentioned, engine operation for a period of time after, engine water temperature will be above the first temperature threshold, and ECU sends control
Instruction ratio triple valve processed opens engine water route, and switch off the pump circuit, if engine is not worked by working to be switched at this time
State, engine water temperature will gradually decline, and to keep heater cores to enter the steady of water water temperature, ECU is according to crew module's heating demand
A suitable air outlet target temperature is calculated, and obtains ptc heater targeted operating temperature, steps up ptc heater
Operating power make up, and ratio triple valve is driven to open in suitable aperture, opens water pump water route, pass through and adjust ratio three
The aperture of port valve and electronic water pump for engine control the flow proportional in engine water route and water pump water route, meet crew module and adopt
Warm demand, is made water flow circuits gradually steadily be switched to water pump water route by engine water route, avoids being caused due to water temperature larger fluctuation
Air outlet temperature fluctuation.
In addition, engine does not work under electric-only mode, water flow is cooled down at this time in water pump waterway circulating, when battery electricity
Amount is insufficient, and after engine start, ECU sends control instruction and ratio triple valve is made to open water pump water route, by adjusting ratio three
The aperture of port valve controls the flow proportional in engine water route and water pump water route, is switched to water flow circuits steadily by water pump water route
By engine water route, avoid causing air outlet temperature to fluctuate due to water temperature larger fluctuation.
It should be noted that in the present embodiment, ECU according to set temperature on outside temperature, vehicle interior temperature, air-conditioning panel come
Air outlet target temperature is calculated, specifically as follows:
Target air outlet temperature TAO=Kset × user's set temperature+Kr × vehicle interior temperature+Kam × outside temperature
Collection value+C
Wherein first constant Kset, second constant Kr, three constant Kam, the 4th constant C are constant, are marked by test
Determine and obtain, and is relatively independent.
It is corresponding with ptc heater operating temperature further according to air outlet target temperature after calculating air outlet target temperature
Relationship, inquiry obtain ptc heater operating temperature.As shown in figure 3, being looked on chart shown in Fig. 3 by calculated TAO value
It askes and obtains corresponding PTC operating temperature.For example, finding out correspondence on chart shown in Fig. 3 when calculated TAO value is T3
PTC operating temperature be 40 DEG C；If calculated TAO value continues to increase, but PTC operating temperature can still maintain 40 DEG C, directly
When being increased to T4 to TAO value, show that PTC operating temperature will be changed to 55 DEG C from 40 DEG C on chart shown in Fig. 3, to obtain new
PTC operating temperature.Similarly, during TAO value drops to T3 from T4, target water temperature will first maintain 55 DEG C, until
40 DEG C just are changed to from 55 DEG C when TAO value becomes T3.It is determined by experiment, TAO value and PTC to each temperature change point
Operating temperature is not one-to-one relationship, and hysteresis has an impact to tabling look-up, and becomes larger or becomes smaller according to TAO value, determines PTC work temperature
The situation of change of degree.
By above description it is found that bring beneficial effect of the present invention is, the present invention had both met crew module's heating and had needed
It asks, while guaranteeing that crew module's air outlet temperature is smooth, ptc heater working time and power are reduced under certain operating conditions, save
Electricity consumption improves mileage.
The above disclosure is only the preferred embodiments of the present invention, cannot limit the right model of the present invention with this certainly
It encloses, therefore equivalent changes made in accordance with the claims of the present invention, is still within the scope of the present invention.
Claims (7)
1. a kind of new-energy automobile heating control method, comprising:
After the engine started, judge whether engine water temperature reaches the first temperature threshold, if not up to the first temperature threshold,
Water flow is then controlled by water pump waterway circulating；If reaching the first temperature threshold, water flow is controlled by engine waterway circulating, then
Further judge whether engine water temperature reaches second temperature threshold value, if reaching second temperature threshold value, in crew module without adopting
Switch off the pump water route and engine water route when warm demand, and water flow is controlled when crew module has heating demand simultaneously by water pump water route
With engine waterway circulating；
The control water flow refers to the water flow of water pump successively through water pump, ratio triple valve, positive temperature coefficient in water pump waterway circulating
Ptc heater enters heater cores, and the control water flow refers to the hot water of engine successively through starting by engine waterway circulating
Machine, ratio triple valve, positive temperature coefficient ptc heater enter heater cores；
Electronic control unit ECU calculates air outlet target temperature according to set temperature on outside temperature, vehicle interior temperature, air-conditioning panel
Degree, and ptc heater operating temperature is obtained further according to the air outlet target temperature, then send corresponding instruction control PTC
Heater works in the operating temperature, wherein the mode for calculating the air outlet target temperature is: warm to setting on air-conditioning panel
The product of degree and the product of first constant, the product of vehicle interior temperature and second constant, outside temperature collection value and three constant with
And the 4th constant summation.
2. control method according to claim 1, which is characterized in that described to be obtained according to the air outlet target temperature
Ptc heater operating temperature, specifically according to the corresponding relationship of the air outlet target temperature and ptc heater operating temperature
Table obtains the corresponding ptc heater operating temperature of a certain air outlet target temperature by inquiry.
3. control method according to claim 1, which is characterized in that described to control water flow when crew module has heating demand
Water pump water route and engine waterway circulating are pressed simultaneously, and specifically ECU sends control instruction driving ratio triple valve and opens engine
Water route and water pump water route control the flow proportional in engine water route and water pump water route by adjusting the aperture of ratio triple valve,
The water of hot engine water and water pump flows through ratio triple valve, and ptc heater and heater cores are entered after mixing.
4. control method according to claim 1, which is characterized in that it is specifically according to mesh that whether crew module, which has heating demand,
Mark whether draught temperature is lower than heating temperature threshold value to judge, if target air outlet temperature is lower than heating temperature threshold value,
Judge that crew module does not have heating demand, if target air outlet temperature is greater than or equal to heating temperature threshold value, judges crew module
There is heating demand.
5. control method according to claim 1, which is characterized in that further include: when engine is switched to not work by working
When making state, ECU send control instruction driving ratio triple valve open water pump water route, by adjust ratio triple valve aperture with
And electronic water pump for engine controls the flow proportional in engine water route and water pump water route, makes water flow gradually by by engine water route
Cyclic switching is to by water pump waterway circulating.
6. control method according to claim 1, which is characterized in that further include: when engine is switched to work by not working
When making state, ECU send control instruction driving ratio triple valve open water pump water route, by adjust ratio triple valve aperture come
The flow proportional for controlling engine water route and water pump water route, makes water flow gradually by being switched to by water pump waterway circulating by engine water
Road circulation.
7. control method according to claim 1-6, which is characterized in that first temperature threshold is 50 DEG C,
The second temperature threshold value is 90 DEG C.
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| CN201710233479.7A CN107150570B (en) | 2017-04-11 | 2017-04-11 | A kind of new-energy automobile heating control method |
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| CN201710233479.7A CN107150570B (en) | 2017-04-11 | 2017-04-11 | A kind of new-energy automobile heating control method |
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| CN107150570B true CN107150570B (en) | 2019-06-21 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111412099B (en) * | 2019-01-08 | 2021-04-02 | 广州汽车集团股份有限公司 | Method and system for quickly warming automobile |
| CN112406450A (en) * | 2019-08-23 | 2021-02-26 | 上海汽车集团股份有限公司 | Heat recovery system of new energy vehicle and control method thereof |
| CN110588287A (en) * | 2019-08-29 | 2019-12-20 | 上海爱斯达克汽车空调系统有限公司 | Double-layer flow heating core system with waste heat recovery function and working method thereof |
| CN112993443A (en) * | 2019-12-16 | 2021-06-18 | 北京宝沃汽车股份有限公司 | Control method, medium, and device for electric vehicle |
| CN111497555B (en) * | 2020-04-24 | 2022-05-17 | 重庆长安汽车股份有限公司 | Heating method for automobile air conditioner |
| CN113997756B (en) * | 2020-07-28 | 2024-01-23 | 威马智慧出行科技（上海）有限公司 | Control method, controller and system of multi-heat-source heating system of electric automobile and automobile |
| CN112177754B (en) * | 2020-09-29 | 2022-05-03 | 东风汽车集团有限公司 | Control method, system and storage medium for warm air water circulation of fuel automobile |
| CN116291842B (en) * | 2023-02-17 | 2024-04-12 | 重庆长安汽车股份有限公司 | Cooling system for hybrid electric vehicle type and vehicle |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE10014011C1 (en) * | 2000-03-22 | 2001-03-22 | Webasto Thermosysteme Gmbh | Heating system for automobile passenger compartment uses heat provided by engine coolant circuit with independent electric heating of engine coolant |
| JP5316819B2 (en) * | 2010-12-13 | 2013-10-16 | 三菱自動車工業株式会社 | Vehicle heating system |
| CN102529642B (en) * | 2012-01-09 | 2015-07-01 | 重庆长安汽车股份有限公司 | Control method of air-conditioner heating system for extended range electric vehicle |
| CN105196834A (en) * | 2015-10-29 | 2015-12-30 | 北京新能源汽车股份有限公司 | Engine system for hybrid vehicle and hybrid vehicle |
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