CN109532405A - A kind of electric automobile whole heat management system and its control method - Google Patents
A kind of electric automobile whole heat management system and its control method Download PDFInfo
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- CN109532405A CN109532405A CN201910051883.1A CN201910051883A CN109532405A CN 109532405 A CN109532405 A CN 109532405A CN 201910051883 A CN201910051883 A CN 201910051883A CN 109532405 A CN109532405 A CN 109532405A
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- valve
- water pump
- battery
- battery pack
- radiator
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Classifications
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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
- B60H1/00357—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
- B60H1/00271—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit
- B60H1/00278—HVAC devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit for the battery
-
- 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
- B60H1/14—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant otherwise than from cooling liquid of the plant, e.g. heat from the grease oil, the brakes, the transmission unit
- B60H1/143—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant otherwise than from cooling liquid of the plant, e.g. heat from the grease oil, the brakes, the transmission unit the heat being derived from cooling an electric component, e.g. electric motors, electric circuits, fuel cells or batteries
-
- 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
- B60H2001/00307—Component temperature regulation using a liquid flow
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- 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
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Abstract
The invention discloses a kind of electric automobile whole heat management systems, including motor-radiator loop, PTC heating circuit, battery pack circuit and air conditioner loop；Heat transmitting and heat exchange are realized by valve, plate heat exchanger between each circuit, to meet under different operating conditions, the cooling requirement of each component heating.Valve is used only in heat management circuit of the present invention realizes the intercommunication of electric motor loop, cell circuit, the circuit PTC.The present invention discloses a kind of electric automobile whole heat management system control methods, using battery actual work temperature TBWith battery standard work temperature0Difference DELTA T1And motor exit water temperature TMWith battery actual work temperature TBDifference DELTA T2As identification parameter, suitable circuit pattern is determined using fuzzy control method.This control method is realized according to vehicle actual conditions, is switched heat management circuit pattern in real time, is utmostly saved battery power consumption.
Description
Technical field
The invention belongs to electric automobile whole thermal management technology fields, and in particular to a kind of electric automobile whole heat management system
System.
Background technique
The appearance of electric car effectively alleviates energy crisis and environmental pollution, the feature of electric automobile energy saving environmental protection,
Also the trend of future automobile development is become.Battery pack in electric car as its dynamical system core component to automobile
Performance, course continuation mileage and vehicle security etc. all play decisive role.And the extremes of temperature of battery pack can all influence
Its working performance, therefore to meet normal work of the electric car under different operating conditions, it is necessary to carry out vehicle heat management.
Current existing electric automobile whole heat management circuit includes motor cooling circuit, air conditioning coolant loop mostly
And battery pack circuit.But heat exchange is less (CN105501071A) between different circuit, and each component of automobile cannot be made full use of to produce
Raw heat causes a large amount of energy dissipation；Or can realize heat exchange between circuit, but structure is complex, number of components is more
(CN108099544A).On the control strategy used by electric car heat management loop switch, it is mostly used single threshold value conduct
Judgment criteria realizes the switching (CN201610070580) of heat management circuit pattern, and single accurate threshold value is excessively absolute, no
Adapt to battery charging and discharging operating condition complicated and changeable, it is also possible to will cause the frequent transitions between two kinds of operating conditions, damage component life.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of energy consumptions to reduce, control is reliable, the operation is stable electronic vapour
Each heat management circuit of existing automobile is integrated into the thermal management system of whole that can mutually conduct heat by vehicle heat management system, thus
Battery power consumption is effectively reduced.
To achieve the above object, the technical solution adopted by the present invention are as follows: a kind of electric automobile whole heat management system, including
Motor-radiator loop, PTC heating circuit, battery pack circuit and air conditioner loop；By valve, board-like between each circuit
Heat exchanger realizes heat transmitting and heat exchange, to meet under different operating conditions, the cooling requirement of each component heating.
Motor-the radiator loop includes the radiator 101 being sequentially connected in series, driving motor 102, DC-DC
(103), charger 104, electric machine controller 105, the first water pump 106, the first triple valve 107, the first four-way valve the 108, the 2nd 3
Port valve 109；Radiator 101, driving motor 102, DC-DC (103), charger 104, electric machine controller 105, the first water pump 106
It is sequentially connected in series；First triple valve 107, which is mounted between radiator 101 and driving motor 102, is equipped with the first triple valve the 107, the 1st
107 entrance of port valve is connected with driving motor 102, and 107 one outlet of the first triple valve is connected with radiator 101, the first triple valve
Directly it is connected with the first four-way valve 108 after 107 another outlet bypass radiator 101；Four interfaces of the first four-way valve 108
Successively it is connected with the second triple valve 109, radiator 101, the first water pump 106 and water return pipeline；Second triple valve, 109 entrance
Connect with the first four-way valve 108, two outlet respectively in PTC heating circuit heater cores 202 and battery pack circuit in
Third water pump 302 connects；
The PTC heating circuit includes Coolant PTC201, the second water pump 203, heater cores 202, third triple valve
204, third shut-off valve 205, air blower 206；Coolant PTC201, the second water pump 203, heater cores 202 are sequentially connected in series；The
Three triple valves 204 are mounted between the second water pump 203 and heater cores 202,204 entrance of third triple valve and 203 phase of the second water pump
Even, 204 liang of third triple valve outlets are connected with the third water pump 302 in heater cores 202 and battery pack circuit respectively；The
Three shut-off valves 205 are mounted between Coolant PTC201 and motor-radiator loop water return pipeline；
The battery pack circuit includes the battery pack 301 being sequentially connected in series, third water pump 302, the second shut-off valve 303, board-like
Heat exchanger 305, and the 4th shut-off valve 304 being mounted between motor-radiator loop water return pipeline and battery pack 301；
The air conditioner loop includes compressor 401, condenser 402, the first shut-off valve 405, heating power expansion valve 404, evaporation
Device 403, electric expansion valve 406；Contracting machine 401, condenser 402, the first shut-off valve 405, heating power expansion valve 404, evaporator 403 according to
Secondary series connection；406 both ends of electric expansion valve are connect respectively in 401 entrance of 405 entrance of the first shut-off valve and compressor, while by the plate
Formula heat exchanger 305 is gone here and there in the branch.
Present invention simultaneously provides a kind of control method of electric automobile whole heat management system, electric car heat management circuits
Pattern switching control strategy uses fuzzy control, comprising the following steps:
Whether automobile connect S1, electric car BMS system detection with external charging machine at this time, if being connected with external charging machine
It connects, then enters step S2, judge whether battery capacity is 100%；If not being connected with external charging machine, S4 is entered step,
Whether electricity is too low at this time for judgement；
S2, electric car BMS system judge whether battery capacity is 100%, if electricity is 100%, directly return；If
Electricity is not 100%, then signal is reached thermal management controller, enters step S3 and judges heat management circuit mould when battery charging
Formula；
S3 respectively obtains battery actual work temperature T according to respective temperature sensorB, battery standard work temperature0With
And motor exit water temperature TM, with battery actual work temperature TBWith battery standard work temperature0Difference DELTA T1, motor exit water temperature
TMWith battery actual work temperature TBDifference DELTA T2, and corresponding corresponding membership function, foundation cell heat demand inference rule,
And circuit institute calorific requirement Q at this time, identification battery heat management circuit pattern corresponding when charging are obtained by gravity model appoach ambiguity solution；
S4, judges whether battery capacity is greater than the minimum discharge electricity amount 20% of battery, if battery capacity is less than minimum electric discharge electricity
Amount, then show that battery is unable to regular picture at this time, directly returns；If battery capacity is greater than minimum discharge electricity amount, signal is passed
To thermal management controller, enters step S5 and judge heat management circuit pattern when battery discharge；
S5, according at this time with battery actual work temperature TBWith battery standard work temperature0Difference DELTA T1, motor goes out saliva
Warm TMWith battery actual work temperature TBDifference DELTA T2, and corresponding corresponding membership function, it is advised according to the reasoning of cell heat demand
Then, and by gravity model appoach ambiguity solution circuit institute calorific requirement Q at this time is obtained, identifies heat management circuit mould corresponding when battery discharge
Formula.
The fuzzy control of the heat management circuit pattern switching, according to battery actual work temperature TBIt works with battery standard
Temperature T0Difference DELTA T1And motor exit water temperature TMWith battery actual work temperature TBDifference DELTA T2As identification parameter, by Δ
T1、ΔT2It is divided into 5 fuzzy sets by size:<<0 (NB),<0 (NS), ≈ 0 (Z0),>0 (PS),>>0 (PB), is established corresponding respectively
Membership function, t in function1To t14It is constant, need to be specifically determined according to different battery packs and operating condition:
Using battery pack institute calorific requirement q as output quantity, it is divided into 5 fuzzy sets: big heating (LH), small heating (SH), heat
(EQ), small heat dissipation (SC), big heat dissipation (LC) are balanced, subordinating degree function is similar in above-mentioned formula.And based on having there is experience, estimation is electric
Demand of the pond group under different charge and discharge operating conditions to heat establishes respective battery heat demand inference rule library.Pass through gravity model appoach
Ambiguity solution determines the heat demand of battery pack at this time, and the gravity model appoach is to take membership function curve and the surrounded area of abscissa
Output valve of the center of gravity as fuzzy reasoning, gravity model appoach formula is as follows:
According to output valve obtained by above-mentioned ambiguity solution, each valve on-off is controlled, heat management when realizing electric car charge and discharge
The switching of circuit pattern.
Heat management circuit pattern specifically includes when the electric car charge and discharge: pole low temperature charging mode, low temperature charging mould
Formula, room temperature charge mode, higher temperatures charge mode, high-temperature charging mode；It is extremely low temperature discharge mode, low temperature discharge mode, lower
Warm discharge mode, room temperature discharge mode, high temperature discharge mode.Each heat management circuit pattern expression cools down at this time when the charge and discharge
Liquid stream to and achievable function.
The pole low temperature charging mode, battery pack temperature is too low at this time to charge normal, PTC heating circuit and battery pack
Circuit connection heats battery pack by Coolant PTC, guarantees that battery can charge normal.Simultaneously in motor-radiator loop
Middle bypass radiator makes DC-DC, charger accumulation of heat, rises very rapidly up to normal working temperature.
The low temperature charging mode, motor-radiator loop and battery pack circuit connection, utilize DC-DC, charger at this time
Waste heat is battery pack heating, and radiator does not work, and battery pack is kept to remain at suitable temperature, improves charge efficiency.
The room temperature charge mode at this time in motor-radiator loop, is radiated using radiator to DC-DC, charger.
The self-loopa of battery pack circuit.
The higher temperatures charge mode, motor-radiator loop and battery pack circuit connection at this time, radiator, DC-DC,
Charger, battery pack series connection, while each component cooling is given using radiator, guarantee that battery pack charges in suitable temperature.
The high-temperature charging mode, at this time in motor-radiator loop, using radiator be DC-DC, charger radiates.
Air conditioner loop and battery pack circuit are battery heat dissipation using air-conditioning by plate heat exchanger progress heat exchange.
The extremely low temperature discharge mode utilizes Coolant PTC heated cooling fluid at this time, is separately flowed into and multiplied by triple valve
Member cabin and battery pack heat up for it.Radiator is bypassed in motor-radiator loop simultaneously, motor temperature is made to rise to conjunction as early as possible
Thermophilic degree.
It is described compared with low temperature discharge mode, motor-radiator loop and battery pack circuit in series, motor waste heat can pass through at this time
Triple valve shunts, and hot coolant liquid separately flows into crew module and battery pack heats for it.
The room temperature discharge mode at this time in motor-radiator loop, is radiated using radiator to DC-DC, charger.
The self-loopa of battery pack circuit, crew module is without heating refrigeration.
The higher temperatures discharge mode at this time connects motor-radiator loop, battery pack circuit in series, and utilization is same
Radiator is that driving motor and battery pack are cooling, and the two temperature is kept to be maintained at suitable operating temperature.At this time crew module still without
Refrigeration need to be heated.
The high temperature discharge mode at this time in motor-radiator loop, is radiated using radiator to driving motor, but dissipate
Hot device has been unable to satisfy battery pack cooling requirements.Therefore air conditioner loop and battery pack circuit are exchanged heat by plate heat exchanger, are taken away
Battery pack heat, to keep battery pack to maintain desired operating temperatures.
The beneficial effects of the present invention are:
1, valve is used only in heat management circuit of the present invention realizes the intercommunication of electric motor loop, cell circuit, the circuit PTC.
An only Coolant PTC and a radiator for different circuit use, simplify to a certain extent loop structure, reduce at
This；
2, radiator can be bypassed in heat management circuit of the present invention, avoids unnecessary motor radiating, can makes full use of
Motor waste heat is battery pack, crew module's heating, reduces battery power consumption, increases automobile continual mileage；
3, using battery actual work temperature TBWith battery standard work temperature0Difference DELTA T1And motor exit water temperature
TMWith battery actual work temperature TBDifference DELTA T2As identification parameter, suitable circuit pattern is determined using fuzzy control method.
This control method is realized according to vehicle actual conditions, switches heat management circuit pattern in real time, utmostly saves battery energy
Consumption.
Detailed description of the invention
Fig. 1 is electric automobile whole heat management system
Fig. 2 is Δ T1(TB-T0) membership function
Fig. 3 is Δ T2(TM-TB) membership function
Fig. 4 is cell heat demand q membership function
Fig. 5 is the flow chart of heat management mode decision program
Fig. 6 is pole low temperature charging mode loop diagram
Fig. 7 is low temperature charging mode loop diagram
Fig. 8 is room temperature charge mode loop diagram
Fig. 9 is higher temperatures charge mode loop diagram
Figure 10 is high-temperature charging mode loop figure
Figure 11 is extremely low temperature discharge mode loop diagram
Figure 12 is compared with low temperature discharge mode loop diagram
Figure 13 is room temperature discharge mode loop diagram
Figure 14 is higher temperatures discharge mode loop diagram
Figure 15 is high temperature discharge mode loop figure
Specific embodiment
Thermal management system of electric automobile described in the invention has different circulation loops in different charge and discharge operating conditions.
The specific embodiment of invention is described in detail with reference to the accompanying drawing.
Referring to Fig. 1, example goes out a kind of electric automobile whole heat management system of the present invention, including four circuits,
Respectively motor-radiator loop, PTC heating circuit, battery pack circuit and air conditioner loop.Pass through valve between each circuit
Door, heat exchanger realize heat transmitting and heat exchange.
Wherein motor-radiator loop includes: radiator 101, driving motor 102, DC-DC (103), charger 104, electricity
Machine controller 105, the first water pump 106, are sequentially connected in series.Install the first triple valve additional between radiator 101 and driving motor 102
107, entrance is connected with driving motor 102；Outlet is connected with radiator 101, then is connected to the first four-way valve 108；Another outlet
Radiator 101 is bypassed, is directly connected with the first four-way valve 108.Four interfaces of the first four-way valve 108 successively with the second threeway
Valve 109, radiator 101, the first water pump 106 and water return pipeline are connected.Second triple valve, 109 entrance and the first four-way valve
108 connections, two outlets are connect with heater cores 202, third water pump 302 respectively.Pass through the first four-way in motor-radiator loop
Valve 108 realize circuit self-loopa or with other circuit heat exchanges；By 107 traffic organising radiator of the first triple valve bypass with
It is no；By the second triple valve 109 crew module or battery pack will be imported from motor-radiator loop liquid cooled heat.
Wherein PTC heating circuit includes: Coolant PTC201, the second water pump 203, heater cores 202, the company of being sequentially connected in series
It connects.Install third triple valve 204 additional between the second water pump 203 and heater cores 202, entrance is connected with the second water pump 203, and two go out
Mouth is connected with heater cores 202 and third water pump 302 respectively.Third shut-off valve 205 is installed at Coolant PTC201 and returns
Between water lines.Liquid cooled heat in PTC heating circuit can flow through heater cores 202 through third triple valve 204, and pass through air blast
Hot blow is entered crew module by machine 206；It may also flow into battery pack circuit, heated for battery pack.
Wherein battery pack circuit includes: battery pack 301, third water pump 302, the second shut-off valve 303, plate heat exchanger 305,
It is sequentially connected in series.4th shut-off valve 304 is installed between water return pipeline and battery pack 301.
Battery pack circuit passes through 303 on-off of the second shut-off valve and controls coolant liquid self-loopa or hot with other circuits in circuit
Exchange.
Wherein air conditioner loop includes: compressor 401, condenser 402, the first shut-off valve 405, heating power expansion valve 404, evaporation
Device 403, is sequentially connected in series.406 both ends of electric expansion valve are connect respectively in 401 entrance of 405 entrance of the first shut-off valve and compressor,
Simultaneously by the string of plate heat exchanger 305 in the branch.Air conditioner loop and battery pack circuit pass through plate heat exchanger 305 and carry out hot friendship
It changes, realizes that battery pack is cooling.Crew module's cooling is realized by evaporator 403.
Wherein motor-radiator loop and PTC heating circuit pass through the first four-way valve 108, the second triple valve 109, third
Shut-off valve 205 realizes hot transmitting.Motor-radiator loop and battery pack circuit pass through the first four-way valve 108, the second triple valve
109, the 4th shut-off valve 304 realizes hot transmitting.PTC heating circuit and battery pack circuit are ended by third triple valve 204, third
Valve 205, the 4th shut-off valve 304 realize hot transmitting.
As an example for implementing the above heat management circuit pattern switching fuzzy control strategy, battery actual work temperature
TBWith battery standard work temperature0Difference DELTA T1And motor exit water temperature TMWith battery actual work temperature TBDifference DELTA T2,
ΔT1、ΔT2It is divided into 5 fuzzy sets by size:<<0 (NB),<0 (NS), ≈ 0 (Z0),>0 (PS),>>0 (PB).Phase is established respectively
The membership function answered, t in function1To t14It is constant, need to be specifically determined according to different battery packs and operating condition:
Corresponding membership function expression formula is as follows in the present embodiment, and image difference is as shown in Figure 2,3.
Cell heat demand is also classified into 5 fuzzy sets: big heating (LH), small heating (SH), heat balance (EQ), small heat dissipation
(SC), heat dissipation (LC) greatly.In the present embodiment, corresponding membership function expression formula is as follows, and image is as shown in Figure 4.
, and based on having there is experience, estimate demand of the battery pack under different charge and discharge operating conditions to heat, establishes respective battery
Heat demand inference rule library determines the heat demand of battery pack at this time, the gravity model appoach is to take person in servitude by gravity model appoach ambiguity solution
Output valve of the center of gravity of membership fuction curve and the surrounded area of abscissa as fuzzy reasoning, gravity model appoach formula are as follows:
According to output valve obtained by above-mentioned ambiguity solution, each valve on-off is controlled, heat management when realizing electric car charge and discharge
The switching of circuit pattern.
Cell heat demand inference rule is as shown in table 1 under different charge and discharge operating conditions, the control journey of this control strategy example
Program flow diagram is as shown in figure 5, the program is in time read and is performed repeatedly at predetermined intervals, to meet electric car heat pipe
The demand that reason circuit pattern switches in real time.
1 fuzzy inference rule of table
Specific procedure is described as follows:
In S1, whether automobile connect electric car BMS system detection with external charging machine at this time.If with external charging machine
It is connected, then judges whether battery capacity is 100% at this time；If not being connected with external charging machine, judge that electricity is at this time
It is no too low.
In S2, electric car BMS system judges whether battery capacity is 100%.If electricity is 100%, directly return
It returns；If electricity is not 100%, signal is reached into thermal management controller, heat management circuit mould when judging battery charging into S3
Formula.
In S3, according to respective temperature sensor, battery actual work temperature T is respectively obtainedB, battery standard operating temperature
T0And motor exit water temperature TM.Calculate battery actual work temperature TBWith battery standard work temperature0Difference DELTA T1Go out with motor
Mouth water temperature TMWith battery actual work temperature TBDifference DELTA T2, and corresponding corresponding membership function.According to the reasoning of cell heat demand
Rule, and circuit institute calorific requirement Q at this time is obtained by gravity model appoach ambiguity solution, heat management circuit pattern when corresponding to corresponding charging.
It is at this time pole low temperature charging mode, circulation loop please refers to Fig. 6: the first 106 → motor of water pump as Q < -0.6
105 → charger of controller, 104 → DC-DC (103) → 102 → the first triple valve of driving motor, 107 → the first four-way valve 108 →
First water pump 106；The 301 → the 4th 205 → Coolant of shut-off valve 304 → third shut-off valve of 302 → battery pack of third water pump
Water pump 203 → third, the 204 → third of triple valve of PTC201 → second water pump 302.
Be at this time low temperature charging mode as -0.6 < Q < -0.2, circulation loop please refer to the Fig. 7: the first water pump 106 →
105 → charger of electric machine controller, 104 → DC-DC (103) → 102 → the first triple valve of driving motor, 107 → the first four-way valve
108 → the second 301 → the first four-way valve of triple valve 109 → third water pump, 302 → battery pack, 108 → the first water pump 106.
It is at this time room temperature charge mode as -0.2 < Q < 0.2, circulation loop please refers to Fig. 8: the first 106 → electricity of water pump
105 → charger of machine controller, 104 → DC-DC (103) → driving motor, 102 → the first 107 → radiator of triple valve 101 → the
One four-way valve, 108 → the first water pump 106；302 → battery pack of third water pump, 301 → the second 303 → third of shut-off valve water pump 302.
Be at this time higher temperatures charge mode as 0.2 < Q < 0.6, circulation loop please refer to the Fig. 9: the first water pump 106 →
105 → charger of electric machine controller, 104 → DC-DC (103) → driving motor, 102 → the first 107 → radiator of triple valve 101 →
First four-way valve, 108 → the second triple valve 109 → third water pump, 302 → battery pack, 301 → the 4th shut-off valve, 304 → the first four-way
108 → the first water pump 106 of valve.
It is at this time high-temperature charging mode as 0.6 < Q, circulation loop please refers to Figure 10: the first water pump 106 → motor control
105 → charger of device processed, 104 → DC-DC (103) → driving motor, 102 → the first 107 → radiator of triple valve the 101 → the 1st
108 → the first water pump 106 of port valve；301 → plate heat exchanger of third 302 → battery pack of water pump, 305 → the second shut-off valve 303 → the
Three water pumps 302；305 → compressor of compressor 401 → condenser, 402 → electric expansion valve, 406 → plate heat exchanger 401.
In S4, judge whether battery capacity is greater than the minimum discharge electricity amount 20% of battery.If battery capacity is less than minimum put
Power consumption then shows that battery is unable to regular picture at this time, directly returns；It, will letter if battery capacity is greater than minimum discharge electricity amount
Number thermal management controller is reached, heat management circuit pattern when judging battery discharge into S5.
It is corresponding when using fuzzy control identification battery discharge according to Δ T1, Δ T2 at this time similarly in S3 in S5
Heat management circuit pattern.Heat management circuit pattern is one kind of example when the electric discharge.It can be closed simultaneously according to interior actual temperature
Close in existing circuit pattern refrigeration and heat-production functions in crew module, or additionally open air-conditioning system, Coolant PTC is refrigeration in cabin
Heating.
It is at this time extremely low temperature discharge mode as Q < -0.6, circulation loop please refers to Figure 11: the first 106 → electricity of water pump
105 → charger of machine controller, 104 → DC-DC (103) → driving motor, 102 → the first 107 → radiator of triple valve 101 → the
One four-way valve, 108 → the first water pump 106；Second 202 → Coolant of water pump 203 → third, 204 → heater cores of triple valve
The water pump of PTC201 → second 203；Second 302 → battery pack of water pump 203 → third triple valve 204 → third water pump the 301 → the 4th
Shut-off valve 304 → third, 205 → Coolant of shut-off valve PTC201 → second water pump 203.
As -0.6 < Q < -0.2, at this time for compared with low temperature discharge mode, circulation loop please refers to the Figure 12: the first water pump 106
105 → charger of → electric machine controller, 104 → DC-DC (103) → 102 → the first triple valve of driving motor, 107 → the first four-way
108 → the second 301 → the 4th shut-off valve of triple valve 109 → third water pump, 302 → battery pack of valve, 304 → the first four-way valve 108 →
First water pump 106；First water pump 106 → electric machine controller, 105 → charger, 104 → DC-DC (103) → driving motor 102 →
First triple valve, 107 → the first four-way valve, 108 → the second triple valve 109 → heater cores, 202 → third shut-off valve 205 → the first
108 → the first water pump 106 of four-way valve.
Be at this time room temperature discharge mode as -0.2 < Q < 0.2, circulation loop please refer to the Figure 13: the first water pump 106 →
105 → charger of electric machine controller, 104 → DC-DC (103) → driving motor, 102 → the first 107 → radiator of triple valve 101 →
First four-way valve, 108 → the first water pump 106；302 → battery pack of third water pump, 301 → the second shut-off valve 303 → third water pump
302。
Be at this time higher temperatures discharge mode as 0.2 < Q < 0.6, circulation loop please refer to the Figure 14: the first water pump 106 →
105 → charger of electric machine controller, 104 → DC-DC (103) → driving motor, 102 → the first 107 → radiator of triple valve 101 →
First four-way valve, 108 → the second triple valve 109 → third water pump, 302 → battery pack, 301 → the 4th shut-off valve, 304 → the first four-way
108 → the first water pump 106 of valve.
It is at this time high-temperature charging mode as 0.6 < Q, circulation loop please refers to Figure 15: the first water pump 106 → motor control
105 → charger of device processed, 104 → DC-DC (103) → driving motor, 102 → the first 107 → radiator of triple valve the 101 → the 1st
108 → the first water pump 106 of port valve；301 → plate heat exchanger of third 302 → battery pack of water pump, 305 → the second shut-off valve 303 → the
Three water pumps 302；305 → compressor of compressor 401 → condenser, 402 → electric expansion valve, 406 → plate heat exchanger 401；Compression
401 → condenser of machine, 402 → the first 403 → compressor of shut-off valve 405 → heating power expansion valve, 404 → evaporator 401.
It above are only and preferred embodiments of the present invention are illustrated, above-mentioned technical characteristic can form multiple hairs in any combination
Bright example scheme.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way
Limitation, if use the improvement for the various unsubstantialities that conception and technical scheme of the invention carry out, or it is not improved will
Conception and technical scheme of the invention directly apply to other occasions, within the scope of the present invention.
Claims (5)
1. a kind of electric automobile whole heat management system, which is characterized in that including motor-radiator loop, PTC heating circuit,
Battery pack circuit and air conditioner loop；
Motor-the radiator loop includes the radiator (101) being sequentially connected in series, driving motor (102), DC-DC
(103), charger (104), electric machine controller (105), the first water pump (106), the first triple valve (107), the first four-way valve
(108), the second triple valve (109)；Radiator (101), driving motor (102), DC-DC (103), charger (104), motor control
Device (105) processed, the first water pump (106) are sequentially connected in series；First triple valve (107) is mounted on radiator (101) and driving motor
(102) the first triple valve (107) are equipped between, the first triple valve (107) entrance is connected with driving motor (102), the first triple valve
(107) one outlet is connected with radiator (101), another outlet bypass radiator (101) of the first triple valve (107) is direct afterwards
It is connected with the first four-way valve (108)；Four interfaces of the first four-way valve (108) successively with the second triple valve (109), radiator
(101), the first water pump (106) and water return pipeline are connected；Second triple valve (109) entrance and the first four-way valve (108) are even
It connects, two outlets connect with the heater cores (202) in PTC heating circuit and the third water pump (302) in battery pack circuit respectively
It connects；
The PTC heating circuit includes Coolant PTC (201), the second water pump (203), heater cores (202), third threeway
Valve (204), third shut-off valve (205), air blower (206)；Coolant PTC (201), the second water pump (203), heater cores
(202) it is sequentially connected in series；Third triple valve (204) is mounted between the second water pump (203) and heater cores (202), third triple valve
(204) entrance is connected with the second water pump (203), third triple valve (204) two outlet respectively with heater cores (202) and battery
Third water pump (302) in group circuit is connected；Third shut-off valve (205) is mounted on Coolant PTC (201) and motor-dissipates
Between the water return pipeline in hot device circuit；
The battery pack circuit includes the battery pack (301) being sequentially connected in series, third water pump (302), the second shut-off valve (303), plate
Formula heat exchanger (305), and the 4th cut-off being mounted between motor-radiator loop water return pipeline and battery pack (301)
Valve (304)；
The air conditioner loop include compressor (401), condenser (402), the first shut-off valve (405), heating power expansion valve (404),
Evaporator (403), electric expansion valve (406)；Compressor (401), condenser (402), the first shut-off valve (405), thermal expansion
Valve (404), evaporator (403) are sequentially connected in series；Electric expansion valve (406) both ends connect respectively in the first shut-off valve (405) entrance and
Compressor (401) entrance, while the plate heat exchanger (305) being serially connected in the branch.
2. a kind of control method of electric automobile whole heat management system as described in claim 1, which is characterized in that including with
Lower step:
Whether automobile connect S1, electric car BMS system detection with external charging machine at this time, if being connected with external charging machine,
S2 is then entered step, judges whether battery capacity is 100%；If not being connected with external charging machine, S4 is entered step, is judged
Whether electricity is too low at this time；
S2, electric car BMS system judge whether battery capacity is 100%, if electricity is 100%, directly return；If electricity
It is not 100%, then signal is reached into thermal management controller, enters step S3 and judge heat management circuit pattern when battery charging；
S3 respectively obtains battery actual work temperature T according to respective temperature sensorB, battery standard work temperature0And electricity
Machine exit water temperature TM, with battery actual work temperature TBWith battery standard work temperature0Difference DELTA T1, motor exit water temperature TMWith
Battery actual work temperature TBDifference DELTA T2, and corresponding corresponding membership function, according to cell heat demand inference rule, and press
Gravity model appoach ambiguity solution obtains circuit institute calorific requirement Q at this time, identification battery heat management circuit pattern corresponding when charging；
S4, judges whether battery capacity is greater than the minimum discharge electricity amount 20% of battery, if battery capacity is less than minimum discharge electricity amount,
Show that battery is unable to regular picture at this time, directly returns；If battery capacity is greater than minimum discharge electricity amount, signal is reached into heat pipe
Controller is managed, S5 is entered step and judges heat management circuit pattern when battery discharge；
S5, according at this time with battery actual work temperature TBWith battery standard work temperature0Difference DELTA T1, motor exit water temperature TM
With battery actual work temperature TBDifference DELTA T2, and corresponding corresponding membership function, according to cell heat demand inference rule, and
Circuit institute calorific requirement Q at this time is obtained by gravity model appoach ambiguity solution, identifies heat management circuit pattern corresponding when battery discharge.
3. a kind of control method of electric automobile whole heat management system as claimed in claim 2, which is characterized in that the Δ
T1、ΔT2It is divided into 5 fuzzy sets by size:<<0 (NB),<0 (NS), ≈ 0 (Z0),>0 (PS),>>0 (PB), is established corresponding respectively
Membership function, t in function1To t14It is constant, is specifically determined according to different battery packs and operating condition:
Using battery pack institute calorific requirement q as output quantity, it is divided into 5 fuzzy sets: big heating (LH), small heating (SH), heat balance
(EQ), small heat dissipation (SC), big heat dissipation (LC), and estimate demand of the battery pack under different charge and discharge operating conditions to heat, establish phase
Cell heat demand inference rule library is answered, by gravity model appoach ambiguity solution, determines the heat demand of battery pack at this time, the gravity model appoach
It is the output valve for taking the center of gravity of membership function curve and the surrounded area of abscissa as fuzzy reasoning, gravity model appoach formula is as follows:
Cell heat demand inference rule is as follows: under different charge and discharge operating conditions
。
4. a kind of control method of electric automobile whole heat management system as claimed in claim 2, which is characterized in that the step
Heat management circuit pattern when rapid S3 identification charging:
It is pole low temperature charging mode, circulation loop as Q < -0.6 are as follows: the first water pump (106) → electric machine controller (105) →
Charger (104) → DC-DC (103) → driving motor (102) → first triple valve (107) → first four-way valve (108) → the
One water pump (106)；Third water pump (302) → battery pack (301) → the 4th shut-off valve (304) → third shut-off valve (205) →
Coolant PTC (201) → second water pump (203) → third triple valve (204) → third water pump (302)；
It is low temperature charging mode, circulation loop are as follows: the first water pump (106) → electric machine controller as -0.6 < Q < -0.2
(105) → charger (104) → DC-DC (103) → driving motor (102) → first triple valve (107) → first four-way valve
(108) → second triple valve (109) → third water pump (302) → battery pack (301) → first four-way valve (108) → first water pump
(106)；
It is room temperature charge mode, circulation loop are as follows: the first water pump (106) → electric machine controller (105) as -0.2 < Q < 0.2
→ charger (104) → DC-DC (103) → driving motor (102) → first triple valve (107) → radiator (101) → first
Four-way valve (108) → first water pump (106)；Third water pump (302) → battery pack (301) → second shut-off valve (303) → third
Water pump (302)；
It is higher temperatures charge mode, circulation loop are as follows: the first water pump (106) → electric machine controller as 0.2 < Q < 0.6
(105) → charger (104) → DC-DC (103) → driving motor (102) → first triple valve (107) → radiator (101) →
First four-way valve (108) → second triple valve (109) → third water pump (302) → battery pack (301) → the 4th shut-off valve (304)
→ the first four-way valve (108) → first water pump (106)；
It is high-temperature charging mode as 0.6 < Q, circulation loop are as follows: the first water pump (106) → electric machine controller (105) → fills
Motor (104) → DC-DC (103) → driving motor (102) → first triple valve (107) → radiator (101) → first four-way
Valve (108) → first water pump (106)；Third water pump (302) → battery pack (301) → plate heat exchanger (305) → second cut-off
Valve (303) → third water pump (302)；Compressor (401) → condenser (402) → electric expansion valve (406) → plate heat exchanger
(305) → compressor (401).
5. a kind of control method of electric automobile whole heat management system as claimed in claim 2, which is characterized in that the step
Heat management circuit pattern when rapid S5 identification electric discharge:
It is extremely low temperature discharge mode, circulation loop as Q < -0.6 are as follows: the first water pump (106) → electric machine controller (105) →
Charger (104) → DC-DC (103) → driving motor (102) → first triple valve (107) → radiator (101) → the one or four
Port valve (108) → first water pump (106)；Second water pump (203) → third triple valve (204) → heater cores (202) →
Coolant PTC (201) → second water pump (203)；Second water pump (203) → third triple valve (204) → third water pump (302)
→ battery pack (301) → the 4th shut-off valve (304) → third shut-off valve (205) → Coolant PTC (201) → second water pump
(203)；
As -0.6 < Q < -0.2, for compared with low temperature discharge mode, circulation loop are as follows: the first water pump (106) → electric machine controller
(105) → charger (104) → DC-DC (103) → driving motor (102) → first triple valve (107) → first four-way valve
(108) → second triple valve (109) → third water pump (302) → battery pack (301) → the 4th shut-off valve (304) → first four-way
Valve (108) → first water pump (106)；First water pump (106) → electric machine controller (105) → charger (104) → DC-DC
(103) → driving motor (102) → first triple valve (107) → first four-way valve (108) → second triple valve (109) → warm wind
Core (202) → third shut-off valve (205) → first four-way valve (108) → first water pump (106)；
It is room temperature discharge mode, circulation loop are as follows: the first water pump (106) → electric machine controller (105) as -0.2 < Q < 0.2
→ charger (104) → DC-DC (103) → driving motor (102) → first triple valve (107) → radiator (101) → first
Four-way valve (108) → first water pump (106)；Third water pump (302) → battery pack (301) → second shut-off valve (303) → third
Water pump (302)；
It is higher temperatures discharge mode, circulation loop are as follows: the first water pump (106) → electric machine controller as 0.2 < Q < 0.6
(105) → charger (104) → DC-DC (103) → driving motor (102) → first triple valve (107) → radiator (101) →
First four-way valve (108) → second triple valve (109) → third water pump (302) → battery pack (301) → the 4th shut-off valve (304)
→ the first four-way valve (108) → first water pump (106)；
It is high-temperature charging mode as 0.6 < Q, circulation loop are as follows: the first water pump (106) → electric machine controller (105) → fills
Motor (104) → DC-DC (103) → driving motor (102) → first triple valve (107) → radiator (101) → first four-way
Valve (108) → first water pump (106)；Third water pump (302) → battery pack (301) → plate heat exchanger (305) → second cut-off
Valve (303) → third water pump (302)；Compressor (401) → condenser (402) → electric expansion valve (406) → plate heat exchanger
(305) → compressor (401)；Compressor (401) → condenser (402) → first shut-off valve (405) → heating power expansion valve (404)
→ evaporator (403) → compressor (401).
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