CN105774528B - The cooling device and its control method and system of hybrid vehicle - Google Patents
The cooling device and its control method and system of hybrid vehicle Download PDFInfo
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- CN105774528B CN105774528B CN201410805988.9A CN201410805988A CN105774528B CN 105774528 B CN105774528 B CN 105774528B CN 201410805988 A CN201410805988 A CN 201410805988A CN 105774528 B CN105774528 B CN 105774528B
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Abstract
The present invention provides the cooling device and its control method and system of a kind of hybrid vehicle, wherein the cooling device is used to store the first container of cooling fluid and for by the first water conservancy diversion circuit of the cooling fluid circulation conveying in the first container to the motor of the hybrid vehicle, inverter, engine；First water conservancy diversion circuit includes the first guiding subassembly being arranged in parallel with the engine and the second guiding subassembly being arranged in parallel with the first container, when first guiding subassembly is placed in first state, cooling fluid in first water conservancy diversion circuit flows through the engine, when being placed in the second state, then without flow through the engine；When second guiding subassembly is placed in first state, the cooling fluid in first water conservancy diversion circuit flows through the first container, without flow through the first container when being placed in the second state.Thus the poor technical problem of motor starting characteristic and emission performance in prior art hybrid vehicle is solved.
Description
Technical field
The present invention relates to the cooling devices and its control of hybrid vehicle technology field more particularly to hybrid vehicle
Method and system.
Background technique
Current era, energy issue of world and environmental protection problem become the outstanding problem of limitation human social development,
In this context, new-energy automobile becomes the research hotspot of automobile industry, wherein hybrid vehicle is that new-energy automobile is ground again
The key areas studied carefully.Hybrid power, it is intended that by heat power and electric power both power resources according to real-world operation payload
Flexible modulation is carried out, to reach a technology for improving energy conversion efficiency.
Hybrid vehicle passes through engine by means of control technology, microprocessing, electronic technology and power source technology
With the cooperation of two kinds of dynamical systems of motor, the two advantage is given full play to, replaces machine driven system with electric drive system,
Traction electric machine revolving speed is directly adjusted, human-computer dialogue is realized by sensor and electronic control system, both omits conventional fuel oil car
Gearbox, differential mechanism and Machinery Control System in drive system reduce the mechanical wear in transmission, improve transmission efficiency,
Have many advantages, such as that failure rate is low, controllability is good again.
In general, the hybrid power system of the hybrid vehicle of the prior art includes engine, motor, battery, and
The inverter being connected between motor and battery, wherein the quantity of motor can be one or two, correspondingly, inversion
The quantity of device is one or two.The main function of the cooling system of hybrid vehicle is exactly by engine, motor, inverse
The heat for becoming the components such as device is dispersed into air to prevent the components such as engine, motor, inverter from superheating phenomenon occurs, thus
Prevent these components from causing to burn due to overheat.
But in existing hybrid vehicle, engine-cooling system and electromotor cooling system are to set independently of each other
It sets, engine cold starting process not can avoid, and starting performance is poor when engine cold starts, and emission performance is also poor.
Summary of the invention
For this purpose, technical problem to be solved by the present invention lies in the hybrid vehicle of the prior art, engine start
Performance and emission performance are poor.
In order to solve the above technical problems, the invention adopts the following technical scheme:
A kind of cooling device of hybrid vehicle, comprising: for storing the first container of cooling fluid and for inciting somebody to action
The cooling fluid circulation conveying in the first container is to the motor of the hybrid vehicle, inverter, engine
First water conservancy diversion circuit；First water conservancy diversion circuit include the first guiding subassembly being arranged in parallel with the engine and with it is described
The second guiding subassembly that the first container is arranged in parallel, when first guiding subassembly is placed in first state, first water conservancy diversion is returned
Cooling fluid in road flows through the engine and without flow through first guiding subassembly, when being placed in the second state, then without flow through
The engine and flow through first guiding subassembly；When second guiding subassembly is placed in first state, first water conservancy diversion
Cooling fluid in circuit flows through the first container and without flow through second guiding subassembly, when being placed in the second state without flow through
The first container and flow through second guiding subassembly.
Preferably, first guiding subassembly is placed in the second state and when the second guiding subassembly is placed in first state, described
Cooling fluid flows through the first container, motor, the first guiding subassembly, inverter by first water conservancy diversion circuit；Described
One guiding subassembly is placed in first state and when the second guiding subassembly is placed in the second state, and the cooling fluid is led by described first
It flows back to road and flows through second guiding subassembly, motor, engine, inverter；First guiding subassembly, the second guiding subassembly are all
When being placed in first state, the cooling fluid by first water conservancy diversion circuit flow through the first container, motor, engine,
Inverter.
Preferably, first guiding subassembly includes the first triple valve, the second triple valve and connection first triple valve
With the first diversion pipe of second triple valve, wherein the first end and second end of first triple valve is connected to described first
In water conservancy diversion circuit, the first end and second end of second triple valve is connected in first water conservancy diversion circuit, and the described 1st
The third end of port valve is connected to the third end of second triple valve by first diversion pipe, when the first guiding subassembly is in
When the first state, the first end of first triple valve is connected with second end, the first end of second triple valve and the
The conducting of two ends, cooling fluid flow through the engine by the first end and second end of first triple valve and flow through described the
The first end and second end of two triple valves；When the first guiding subassembly is in second state, the second end of the first triple valve
It is connected with third end, the second end of the second triple valve is connected with third end, and cooling fluid flows through the second of first triple valve
End, third end and third end and second end that second triple valve is flowed through by first diversion pipe；Second water conservancy diversion
Component includes the second water conservancy diversion of third triple valve, the 4th triple valve and connection the third triple valve and the 4th triple valve
Pipe, wherein the first end and second end of the third triple valve is connected in first water conservancy diversion circuit, the 4th triple valve
First end and second end be connected in first water conservancy diversion circuit, the third end of the third triple valve and the 4th threeway
The third end of valve is connected to by second diversion pipe, when the second guiding subassembly is in the first state, the described 3rd 3
The first end of port valve is connected with second end, and the first end of the 4th triple valve is connected with second end, described in cooling fluid process
The first end and second end of third triple valve flow through the first container and flow through the first end and second of the 4th triple valve
End；When the second guiding subassembly is in second state, the second end of third triple valve is connected with third end, the 4th triple valve
Second end be connected with third end, cooling fluid flows through the second end of the third triple valve, third end and by described second
Diversion pipe flows through third end and the second end of the 4th triple valve.
Preferably, between the engine and motor, second triple valve is located at described first triple valve
Between engine and the inverter, the third triple valve is between the first container and motor, the 4th threeway
Valve is between the inverter and the first container.
Preferably, first water conservancy diversion circuit further includes providing the fluid pump of cooling fluid circulation power.
Preferably, above-mentioned cooling device further includes second container for storing cooling fluid and for by cooling fluid
It is delivered to the second water conservancy diversion circuit of the engine.
The present invention also provides the control method of the cooling device of the hybrid vehicle described according to the above technical scheme,
It is characterized in that, comprising the following steps: whether the cooling fluid temperature that the engine is flowed through in judgement is lower than engine low temperature calibration
Value；When being lower than engine low temperature calibration value, make that first guiding subassembly is placed in first state and the second guiding subassembly is placed in
Second state.
Preferably, above-mentioned control method is further comprising the steps of: when being not less than engine low temperature calibration value, judgement is flowed through
Whether the cooling fluid temperature of the engine is higher than engine high-temperature calibration value, and the engine high-temperature calibration value is greater than described
Engine low temperature calibration value；When be not higher than engine high-temperature calibration value when, make first guiding subassembly be placed in the second state and
Second guiding subassembly is placed in first state.
Preferably, above-mentioned control method is further comprising the steps of: when being higher than engine high-temperature calibration value, judging engine
Whether work；When the engine operates, make that first guiding subassembly is placed in the second state and the second guiding subassembly is placed in first
State；When the engine is not in operation, the motor is flowed through in judgement and whether the cooling fluid temperature of inverter exceeds motor temperature
Limit value；When exceeding motor temperature limit value, make that first guiding subassembly is placed in the second state and the second guiding subassembly is placed in the
One state；When without departing from motor temperature limit value, first guiding subassembly, the second guiding subassembly is made to be all placed in first state.
The present invention also provides the control system of the cooling device of the hybrid vehicle described according to the above technical scheme, packets
Include: engine low temperature calibration value judgment module starts for judging whether the cooling fluid temperature for flowing through the engine is lower than
Machine low temperature calibration value；First control module makes first guiding subassembly be placed in first when being lower than engine low temperature calibration value
State and the second guiding subassembly is placed in the second state.
Preferably, above-mentioned control system further include: engine high-temperature calibration value judgment module, for when not less than engine
When low temperature calibration value, whether the cooling fluid temperature that the engine is flowed through in judgement is higher than engine high-temperature calibration value, the hair
Motivation High temperature calibration value is greater than the engine low temperature calibration value；Second control module, for when not higher than engine high-temperature mark
When definite value, make that first guiding subassembly is placed in the second state and the second guiding subassembly is placed in first state.
Preferably, above-mentioned control system further include: engine condition judgment module, for being demarcated when higher than engine high-temperature
When value, judge whether engine works；Third control module, for when the engine operates, setting first guiding subassembly
In the second state and the second guiding subassembly is placed in first state；Motor temperature limit value judgment module, for not working when engine
When, the motor is flowed through in judgement and whether the cooling fluid temperature of inverter exceeds motor temperature limit value；4th control module is used
In making when exceeding motor temperature limit value, first guiding subassembly is placed in the second state and the second guiding subassembly is placed in the first shape
State；5th control module is all placed in first guiding subassembly, the second guiding subassembly when without departing from motor temperature limit value
First state.
The above technical solution of the present invention has the following advantages over the prior art:
The cooling device and its control method and system of a kind of hybrid vehicle of the invention, due to the cooling device
Including the first container for storing cooling fluid and for by the cooling fluid circulation conveying in the first container
Extremely the first water conservancy diversion circuit of the motor of the hybrid vehicle, inverter, engine；First water conservancy diversion circuit includes and institute
State the first guiding subassembly that engine is arranged in parallel and the second guiding subassembly being arranged in parallel with the first container, described
When one guiding subassembly is placed in first state, the cooling fluid in first water conservancy diversion circuit flows through the engine and without flow through institute
The first guiding subassembly is stated, when being placed in the second state, then without flow through the engine and flows through first guiding subassembly；Described
When two guiding subassemblies are placed in first state, the cooling fluid in first water conservancy diversion circuit flow through the first container and without flow through
Second guiding subassembly without flow through the first container and flows through second guiding subassembly when being placed in the second state.In this way,
By the switching of the state of the first guiding subassembly, the second guiding subassembly, the cooling fluid in the first water conservancy diversion circuit can be made to be
Engine warm-up makes engine accelerate cooling, to improve motor starting characteristic and emission performance, and is promoted and is started
Machine reliability and durability.
Detailed description of the invention
In order to make the content of the present invention more clearly understood, it below according to specific embodiments of the present invention and combines
Attached drawing, the present invention is described in further detail, wherein
Fig. 1 is a kind of schematic diagram of the cooling device of hybrid vehicle of the embodiment of the present invention 1；
Fig. 2 a is a kind of schematic diagram 1 of the cooling device of hybrid vehicle of the embodiment of the present invention 2；
Fig. 2 b is a kind of schematic diagram 2 of the cooling device of hybrid vehicle of the embodiment of the present invention 2；
Fig. 2 c is a kind of schematic diagram 2 of the cooling device of hybrid vehicle of the embodiment of the present invention 2；
Fig. 2 d is a kind of schematic diagram 3 of the cooling device of hybrid vehicle of the embodiment of the present invention 2；
Fig. 3 is a kind of control method flow diagram of the cooling device of hybrid vehicle of the embodiment of the present invention 3；
Fig. 4 is a kind of structural schematic diagram of the control system of the cooling device of hybrid vehicle of the embodiment of the present invention 4.
Specific embodiment
Embodiment 1
Fig. 1 shows a kind of cooling device of hybrid vehicle of the embodiment of the present invention, the hybrid vehicle
Hybrid power system includes first motor 200, the first inverter 300, engine 400.The cooling device includes the first container
100, the first water conservancy diversion circuit 500.The first container 100 is used for for storing cooling fluid, the first water conservancy diversion circuit 500 by cooling fluid
It is delivered to first motor 200, the first inverter 300, engine 400.Wherein, the cooling fluid is usually cooling water, can also
Think other cooling liquid or gas.The first container 100 is usually the water tank for storing cooling water, or stores other coolings
The container of liquid or gas.
First water conservancy diversion circuit 500 includes the first guiding subassembly 510 being arranged in parallel with engine 400 and the first container 100
The second guiding subassembly 520 being arranged in parallel.When first guiding subassembly 510 is placed in first state, by the first water conservancy diversion circuit 500
Cooling fluid flow through engine 400 and without flow through first guiding subassembly 510, the first guiding subassembly 510 is placed in the second shape
When state, the first guiding subassembly 510 without flow through engine 400 and is flowed through by the cooling fluid in the first water conservancy diversion circuit 500.Second
When guiding subassembly 520 is placed in first state, the first container 100 and not is flowed through by the cooling fluid in the first water conservancy diversion circuit 500
Second guiding subassembly 520 is flowed through, when the second guiding subassembly 520 is placed in the second state, by the first water conservancy diversion circuit 500
Cooling fluid is without flow through the first container 100 and flows through the second guiding subassembly 520.
In this way, the switching of the state by the first guiding subassembly 510, the second guiding subassembly 520, can make the first water conservancy diversion
Cooling fluid in circuit 500 is engine warm-up or engine made to accelerate cooling, thus improve motor starting characteristic and
Emission performance, and promote engine reliability and durability.
Specifically, the first guiding subassembly 510 includes the first triple valve of the first triple valve 511, the second triple valve 512 and connection
511 and second triple valve 512 the first diversion pipe 513.Referring to Fig. 1 Fig. 2 a, the first end and second of the first triple valve 511
End is connected in the first water conservancy diversion circuit 500, and the first end and second end of the second triple valve 512 is connected to the first water conservancy diversion circuit 500
In, the third end of the first triple valve 511 is connected to the third end of the second triple valve 512 by the first diversion pipe 513.It leads when first
When stream component 510 is in first state, the first end of the first triple valve 511 is connected with second end, and the first of the second triple valve 512
End be connected with second end, and cooling fluid passes through the first end of the first triple valve 511 and second end flows through engine 400 and flows through the
The first end and second end of two triple valves 512.When the first guiding subassembly 510 is in the second state, the of the first triple valve 511
Two ends are connected with third end, and the second end of the second triple valve 512 is connected with third end, and cooling fluid flows through the first triple valve
511 second end, third end and third end and second end that the second triple valve 512 is flowed through by the first diversion pipe 513.
Since the first guiding subassembly 510 includes the first triple valve 511 of the first triple valve 511, the second triple valve 512 and connection
With the first diversion pipe 513 of the second triple valve 512, it is not only simple in structure in this way, facilitates construction, and make the first guiding subassembly
The 510 stability height switched between the first state and the second state.
Second guiding subassembly 520 includes third triple valve 521, the 4th triple valve 522 and connection third triple valve 521 and the
Second diversion pipe 523 of four triple valves 522.Similarly, referring to combine Fig. 1 Fig. 2 a, the first end of third triple valve 521 and
Second end is connected in the first water conservancy diversion circuit 500, and the first end and second end of the 4th triple valve 522 is connected to the first water conservancy diversion circuit
In 500, the third end of third triple valve 521 is connected to the third end of the 4th triple valve 522 by the second diversion pipe 523.When
When two guiding subassemblies 520 are in first state, the first end of third triple valve 521 is connected with second end, the 4th triple valve 522
First end is connected with second end, and cooling fluid flows through the first container 100 simultaneously by the first end and second end of third triple valve 521
Flow through the first end and second end of the 4th triple valve 522.When the second guiding subassembly 520 is in the second state, third triple valve
521 second end is connected with third end, and the second end of the 4th triple valve 522 is connected with third end, and cooling fluid flows through the three or three
The second end of port valve 521, third end and third end and second end that the 4th triple valve 522 is flowed through by the second diversion pipe 523.
Since the second guiding subassembly 520 includes third triple valve 521, the 4th triple valve 522 and connection third triple valve 521
With the second diversion pipe 523 of third triple valve 522, it is not only simple in structure in this way, facilitates construction, and make the second guiding subassembly
The 520 stability height switched between the first state and the second state.
Preferably, between engine 400 and first motor 200, the second triple valve 512 is located at the first triple valve 511
Between engine 400 and the first inverter 300, third triple valve position 521 is between the first container 100 and first motor 200, and
Four triple valves 522 are between the first inverter 300 and the first container 100.
The position of the first triple valve 511, the second triple valve 512, third triple valve 521, the 4th triple valve 522 is designed in this way
It sets, gives full play to the heat transference efficiency of cooling fluid, further increase cooling effect.
Preferably, the first water conservancy diversion circuit 500 further includes providing the fluid pump 530 of cooling fluid circulation power.
Circulation can be carried out in the first water conservancy diversion circuit 500 for cooling fluid in this way and power is provided, improve the work of cooling device
Make efficiency, and then further increases the cooling fluid in the first water conservancy diversion circuit 500 and be engine warm-up or accelerate engine
The efficiency of cooling.
Preferably, the cooling device further includes second container 600, the second water conservancy diversion circuit 700, and second container 600 is used for
Cooling fluid is stored, the second water conservancy diversion circuit 700 is used to cooling fluid being delivered to engine 400.Wherein, 600 He of second container
Second water conservancy diversion circuit 700 can be set outside engine 400, can also be disposed inside engine 400.
In this way, cooling can be provided separately for engine 400 in the setting of second container 600, the second water conservancy diversion circuit 700, make
400 cooling effect of engine is more preferable, further promotes engine reliability and durability.
Embodiment 2
Fig. 2 a shows the cooling device of another hybrid vehicle of the embodiment of the present invention, and described in embodiment 1
Cooling device the difference is that, the hybrid power system of the hybrid vehicle further includes that the second motor 210, second is inverse
Become device 310.First water conservancy diversion circuit 500 is used to cooling fluid being delivered to first motor 200, the first inverter 300, the second motor
210, the second inverter 310, engine 400.Wherein, the first triple valve 511 is between engine 400 and first motor 200,
Second triple valve 512 is located between engine 400 and the first inverter 300, third triple valve position 521 in the first container 100 with
Between second motor 210, the 4th triple valve 522 is between the second inverter 310 and the first container 100.
As shown in Figure 2 b, the first guiding subassembly 510 is placed in the second state, the second end of the first triple valve 511 and third end
Conducting, the second end of the second triple valve 512 is connected with third end, cooling fluid flow through the second end of the first triple valve 511, the
Three ends and third end and the second end that the second triple valve 512 is flowed through by the first diversion pipe 513；And the second guiding subassembly 520
It is placed in first state, the first end of third triple valve 521 is connected with second end, the first end and second end of the 4th triple valve 522
Conducting, cooling fluid flow through the first container 100 and flow through the 4th triple valve by the first end and second end of third triple valve 521
522 first end and second end.In this way, cooling fluid flows through the first container 100, the second motor by the first water conservancy diversion circuit 500
210, first motor 200, the first inverter 300, the second inverter 310 and without flow through the second guiding subassembly 520.
It, in this way can be with as a result, from Fig. 2 b as can be seen that the cooling circuit on right side and the cooling circuit in left side are mutually indepedent
Guarantee the cooling effect of each cooling circuit.
Preferably, as shown in Figure 2 c, the first guiding subassembly 510 is placed in first state, the first end of the first triple valve 511 with
Second end conducting, the first end of the second triple valve 512 are connected with second end, and cooling fluid passes through the first of the first triple valve 511
End flows through engine 400 and flows through the first end and second end of the second triple valve 512 with second end；And the second guiding subassembly
520 are placed in the second state, and the second end of third triple valve 521 is connected with third end, the second end and third of the 4th triple valve 522
End conducting, cooling fluid flow through the second end of third triple valve 521, third end and flow through the four or three by the second diversion pipe 523
The third end of port valve 522 and second end.In this way, cooling fluid flows through the second motor 210, first by the first water conservancy diversion circuit 500
Motor 200, engine 400, the first inverter 300, the second inverter 310.
As a result, when 400 temperature of engine is too low, such as when winter operation vehicle, the second motor 210, first motor 200
It is run prior to engine 400, the temperature of the cooling fluid in the first water conservancy diversion circuit 500 is higher than cold in the second water conservancy diversion circuit 700
But fluid temperature (F.T.).The temperature that can use the cooling fluid in the first water conservancy diversion circuit 500 is that engine 400 carries out warming-up.In order to
Guarantee warming-up effect, the cooling fluid in the first water conservancy diversion circuit 500 is without flow through the first container 100.Similarly, second container 600
It can be set outside engine 400, can also be disposed inside engine 400 with the second water conservancy diversion circuit 700.
Preferably, as shown in Figure 2 d, the first guiding subassembly 510 is placed in first state, the first end of the first triple valve 511 with
Second end conducting, the first end of the second triple valve 512 are connected with second end, and cooling fluid passes through the first of the first triple valve 511
End flows through engine 400 and flows through the first end and second end of the second triple valve 512 with second end；And the second guiding subassembly
520 are placed in first state, and the first end of third triple valve 521 is connected with second end, the first end and second of the 4th triple valve 522
End conducting, cooling fluid flow through the first container 100 and flow through the 4th threeway by the first end and second end of third triple valve 521
The first end and second end of valve 522.In this way, cooling fluid flows through the 100, second electricity of the first container by the first water conservancy diversion circuit 500
Machine 210, first motor 200, engine 400, the first inverter 300,310 cooling fluid of the second inverter are led by described first
It flows back to road and flows through the first container, motor, engine, inverter and without flow through the first guiding subassembly 510, the second guiding subassembly
520。
When being slowed down or shut down after vehicle long-time heavy-duty service as a result, engine 400 stops working, heat
Load is higher.It is 400 fast cooling of engine by the cooling fluid in the first water conservancy diversion circuit 500, to alleviate engine 400
Components aging promotes the reliability and durability of engine 400.
Embodiment 3
Fig. 3 shows a kind of control method of the cooling device of hybrid vehicle according to above-described embodiment, packet
Include following steps:
Whether step S1, the cooling fluid temperature that the engine is flowed through in judgement are lower than engine low temperature calibration value.Sentence
Whether the cooling fluid temperature of engine 400 of stopping is lower than engine low temperature calibration value, when being lower than the engine low temperature mark
When definite value, step S2 is executed, when being not less than engine low temperature calibration value, executes step S3.When the cooling fluid temperature of engine
When degree is lower than engine low temperature calibration value, motor starting characteristic and emission performance are poor, and engine low temperature calibration value usually may be used
To be set between 5 to 15 DEG C, 10 DEG C or so are preferably provided in, those skilled in the art can be according to real engine state
To determine engine low temperature calibration value.
Step S2, makes that first guiding subassembly is placed in first state and the second guiding subassembly is placed in the second state.Even if
First guiding subassembly 510 is placed in first state, and the second guiding subassembly 520 is made to be placed in the second state.Work as engine as a result,
When 400 temperature are too low, such as when winter operation vehicle, the second motor 210, first motor 200 are run prior to engine 400, can
Warming-up is carried out by engine 400 of the temperature using the cooling fluid in the first water conservancy diversion circuit 500.In order to guarantee warming-up effect,
Cooling fluid in first water conservancy diversion circuit 500 is without flow through the first container 100.
Whether step S3, the cooling fluid temperature that the engine is flowed through in judgement are higher than engine high-temperature calibration value.Work as
When flowing through the cooling fluid temperature of engine 400 not less than engine high-temperature calibration value, the cooling stream of engine 400 is flowed through in judgement
Whether temperature is higher than the engine high-temperature calibration value, when being not higher than the engine high-temperature calibration value, executes step S4.
When the cooling fluid temperature of engine is higher than engine high-temperature calibration value, engine natural cooling process is longer, and engine is high
Temperature scale definite value usually may be set between 95 to 105 DEG C, be preferably provided in 100 DEG C or so, and those skilled in the art can be with
Engine high-temperature calibration value is determined according to real engine state.
Step S4, make that first guiding subassembly is placed in the second state and the second guiding subassembly is placed in first state.Even if
First guiding subassembly 510 is placed in the second state, and the second guiding subassembly 520 is made to be placed in first state, thus works as first motor
200, when the temperature is excessively high, the first water conservancy diversion circuit 500 is led with second for the second motor 210, the first inverter 310, the second inverter 320
It is mutually indepedent to flow back to road 700 so that the cooling fluid in the first water conservancy diversion circuit 500 be individually for first motor 200, the second motor 210,
First inverter 310, the cooling of the second inverter 320, to enhance cooling effect.
Step S5 judges whether engine works when being higher than engine high-temperature calibration value.Judging engine 400 is
No work executes step S6 when engine 400 works, and when engine 400 does not work, executes step S7.
Step S6, make that first guiding subassembly is placed in the second state and the second guiding subassembly is placed in first state.It is synchronous
Rapid S4.
Step S7, the motor is flowed through in judgement and whether the cooling fluid temperature of inverter exceeds motor temperature limit value.When
When beyond motor temperature limit value, step S8 is executed, when without departing from motor temperature limit value, executes step S9.When flowing through the electricity
When the cooling fluid temperature of machine and inverter is higher than motor temperature limit value, electric system thermic load is excessive, there are operation risk, this
Even if when flow through engine cooling fluid temperature be higher than engine high-temperature calibration value, engine is not cooled down still, purpose
It is preferential guarantee electromotor cooling system cooling effect, electric system temperature is made to reduce or be unlikely to heat up too fast.Motor temperature limit
Value usually may be set between 85 to 95 DEG C, be preferably provided in 90 DEG C or so, those skilled in the art can be according to reality
Engine condition determines motor temperature limit value.
Step S8, make that first guiding subassembly is placed in the second state and the second guiding subassembly is placed in first state.It is synchronous
Rapid S4, S6.
Step S9, first guiding subassembly, the second guiding subassembly is made to be all placed in first state.Even if the first guiding subassembly
510 are placed in first state, and the second guiding subassembly 520 is made to be placed in first state.As a result, when vehicle long-time heavy-duty service
After when being slowed down or being shut down, engine 400 stops working, and thermic load is higher.At this time using cold in the first water conservancy diversion circuit 500
But temperature of the temperature of fluid lower than the cooling fluid in the second water conservancy diversion circuit 700.Pass through the cooling in the first water conservancy diversion circuit 500
Fluid is 400 fast cooling of engine, to alleviate the components aging of engine 400, promotes the reliability of engine 400 and resistance to
Long property.
Embodiment 4:
Fig. 4 shows a kind of control system of the cooling device of hybrid vehicle according to above-described embodiment, packet
Include engine low temperature calibration value judgment module 10, the first control module 20.
Engine low temperature calibration value judgment module 10 is for judging whether the cooling fluid temperature for flowing through the engine is low
It is corresponding with the step S1 in embodiment 4 in engine low temperature calibration value.
First control module 20 makes first guiding subassembly be placed in first state when being lower than engine low temperature calibration value
And second guiding subassembly be placed in the second state, it is corresponding with the step S2 in embodiment 4.
When the cooling fluid temperature of engine is lower than engine low temperature calibration value, motor starting characteristic and emission performance
Poor, engine low temperature calibration value usually may be set between 5 to 15 DEG C, be preferably provided in 10 DEG C or so, this field skill
Art personnel can determine engine low temperature calibration value according to real engine state.
Preferably, the control system further includes engine high-temperature calibration value judgment module 30, the second control module 40.
Engine high-temperature calibration value judgment module 30 is used for when being not less than engine low temperature calibration value, and judgement is flowed through described
Whether the cooling fluid temperature of engine is higher than engine high-temperature calibration value, and the engine high-temperature calibration value is greater than described start
Machine low temperature calibration value, it is corresponding with the step S3 in embodiment 4.
Second control module 40 makes first guiding subassembly be placed in the second shape when being not higher than engine high-temperature calibration value
State and the second guiding subassembly is placed in first state, it is corresponding with the step S4 in embodiment 4.
When the cooling fluid temperature of engine is higher than engine high-temperature calibration value, engine natural cooling process is longer,
Engine high-temperature calibration value usually may be set between 95 to 105 DEG C, be preferably provided in 100 DEG C or so, art technology
Personnel can determine engine high-temperature calibration value according to real engine state.
Preferably, the control system further includes engine condition judgment module 50, third control module 60, motor temperature
Limit value judgment module 70, the 4th control module 80, the 5th control module 90.
Engine condition judgment module 50 is used to judge whether engine works when being higher than engine high-temperature calibration value.
It is corresponding with the step S5 in embodiment 3.
Third control module 60 is for when the engine operates, making first guiding subassembly be placed in the second state and second
Guiding subassembly is placed in first state.It is corresponding with the step S6 in embodiment 3.
For motor temperature limit value judgment module 70 for when the engine is not in operation, the motor and inverter are flowed through in judgement
Whether cooling fluid temperature exceeds motor temperature limit value.It is corresponding with the step S7 in embodiment 3.
4th control module 80 is used to make first guiding subassembly be placed in the second state when exceeding motor temperature limit value
And second guiding subassembly be placed in first state.It is corresponding with the step S8 in embodiment 3.
5th control module 90 is used for when without departing from motor temperature limit value, makes first guiding subassembly, the second water conservancy diversion
Component is all placed in first state.It is corresponding with the step S9 in embodiment 3.When the cooling fluid temperature for flowing through the motor and inverter
When degree is higher than motor temperature limit value, electric system thermic load is excessive, and there are operation risks, even if flowing through the cooling of engine at this time
Fluid temperature (F.T.) is higher than engine high-temperature calibration value, does not cool down to engine still, it is therefore an objective to preferentially ensure electromotor cooling system
Cooling effect makes electric system temperature reduce or be unlikely to heat up too fast.Motor temperature limit value usually may be set in 85 to 95
Between DEG C, 90 DEG C or so are preferably provided in, those skilled in the art can determine motor temperature according to real engine state
Spend limit value.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
It changes still within the protection scope of the invention.
Claims (9)
1. a kind of cooling device of hybrid vehicle characterized by comprising for store the first container of cooling fluid with
And for by the cooling fluid circulation conveying in the first container to the motor of the hybrid vehicle, inverter,
First water conservancy diversion circuit of engine；
First water conservancy diversion circuit include the first guiding subassembly being arranged in parallel with the engine and with the first container
The second guiding subassembly being arranged in parallel, it is cold in first water conservancy diversion circuit when first guiding subassembly is placed in first state
But fluid flows through the engine and without flow through first guiding subassembly, when being placed in the second state, then starts without flow through described
Machine and flow through first guiding subassembly；When second guiding subassembly is placed in first state, in first water conservancy diversion circuit
Cooling fluid flows through the first container and without flow through second guiding subassembly, without flow through described first when being placed in the second state
Container and flow through second guiding subassembly；
First guiding subassembly is placed in the second state and when the second guiding subassembly is placed in first state, and the cooling fluid passes through
Flow through the first container, motor, the first guiding subassembly, inverter in first water conservancy diversion circuit；
First guiding subassembly is placed in first state and when the second guiding subassembly is placed in the second state, and the cooling fluid passes through
Flow through second guiding subassembly, motor, engine, inverter in first water conservancy diversion circuit；
When first guiding subassembly, the second guiding subassembly are all placed in first state, the cooling fluid is led by described first
It flows back to road and flows through the first container, motor, engine, inverter；
It further include second container for storing cooling fluid and for cooling fluid to be delivered to the second of the engine
Water conservancy diversion circuit；
First guiding subassembly includes the first triple valve, the second triple valve；Second guiding subassembly include third triple valve,
4th triple valve；For first triple valve between the engine and motor, second triple valve is located at described start
Between machine and the inverter, the third triple valve is between the first container and motor, the 4th triple valve position
Between the inverter and the first container.
2. the cooling device of hybrid vehicle according to claim 1, which is characterized in that the first guiding subassembly packet
The first diversion pipe of the first triple valve, the second triple valve and connection first triple valve and second triple valve is included, wherein
The first end and second end of first triple valve is connected in first water conservancy diversion circuit, the first end of second triple valve
It is connected in first water conservancy diversion circuit with second end, the third at the third end of first triple valve and second triple valve
End is connected to by first diversion pipe, when the first guiding subassembly is in the first state, the of first triple valve
One end is connected with second end, and the first end of second triple valve is connected with second end, and cooling fluid passes through first threeway
The first end and second end of valve flow through the engine and flow through the first end and second end of second triple valve；It leads when first
When be in second state, the second end of the first triple valve is connected stream component with third end, the second end of the second triple valve and
The conducting of third end, cooling fluid flow through the second end of first triple valve, third end and are flowed through by first diversion pipe
The third end of second triple valve and second end；
Second guiding subassembly includes third triple valve, the 4th triple valve and the connection third triple valve and the described 4th 3
Second diversion pipe of port valve, wherein the first end and second end of the third triple valve is connected in first water conservancy diversion circuit,
The first end and second end of 4th triple valve is connected in first water conservancy diversion circuit, the third end of the third triple valve
It is connected to the third end of the 4th triple valve by second diversion pipe, when the second guiding subassembly is in the first state
When, the first end of the third triple valve is connected with second end, and the first end of the 4th triple valve is connected with second end, cooling
Fluid flows through the first container and flows through the 4th triple valve by the first end and second end of the third triple valve
First end and second end；When the second guiding subassembly is in second state, second end and the third end of third triple valve are led
Logical, the second end of the 4th triple valve is connected with third end, and cooling fluid flows through the second end of the third triple valve, third end simultaneously
Third end and the second end of the 4th triple valve are flowed through by second diversion pipe.
3. the cooling device of hybrid vehicle according to claim 1, which is characterized in that first water conservancy diversion circuit is also
Including providing the fluid pump of cooling fluid circulation power.
4. a kind of control method of the cooling device of the described in any item hybrid vehicles of claim 1-3, which is characterized in that
The following steps are included:
Whether the cooling fluid temperature that the engine is flowed through in judgement is lower than engine low temperature calibration value；
When being lower than engine low temperature calibration value, make that first guiding subassembly is placed in first state and the second guiding subassembly is placed in
Second state.
5. the control method of the cooling device of hybrid vehicle according to claim 4, which is characterized in that further include with
Lower step:
When being not less than engine low temperature calibration value, whether the cooling fluid temperature that the engine is flowed through in judgement is higher than engine
High temperature calibration value, the engine high-temperature calibration value are greater than the engine low temperature calibration value；
When being not higher than engine high-temperature calibration value, make that first guiding subassembly is placed in the second state and the second guiding subassembly is set
In first state.
6. the control method of the cooling device of hybrid vehicle according to claim 5, which is characterized in that further include with
Lower step:
When being higher than engine high-temperature calibration value, judge whether engine works；
When the engine operates, make that first guiding subassembly is placed in the second state and the second guiding subassembly is placed in first state；
When the engine is not in operation, the motor is flowed through in judgement and whether the cooling fluid temperature of inverter exceeds motor temperature limit
Value；
When exceeding motor temperature limit value, make that first guiding subassembly is placed in the second state and the second guiding subassembly is placed in first
State；
When without departing from motor temperature limit value, first guiding subassembly, the second guiding subassembly is made to be all placed in first state.
7. a kind of control system of the cooling device of the described in any item hybrid vehicles of claim 1-3, which is characterized in that
Include:
Engine low temperature calibration value judgment module starts for judging whether the cooling fluid temperature for flowing through the engine is lower than
Machine low temperature calibration value；
First control module makes first guiding subassembly be placed in first state and the when being lower than engine low temperature calibration value
Two guiding subassemblies are placed in the second state.
8. the control system of the cooling device of hybrid vehicle according to claim 7, which is characterized in that further include:
Engine high-temperature calibration value judgment module, for when being not less than engine low temperature calibration value, described start to be flowed through in judgement
Whether the cooling fluid temperature of machine is higher than engine high-temperature calibration value, and it is low that the engine high-temperature calibration value is greater than the engine
Temperature scale definite value；
Second control module, for making first guiding subassembly be placed in the second shape when being not higher than engine high-temperature calibration value
State and the second guiding subassembly is placed in first state.
9. the control system of the cooling device of hybrid vehicle according to claim 8, which is characterized in that further include:
Engine condition judgment module, for judging whether engine works when being higher than engine high-temperature calibration value；
Third control module, for when the engine operates, first guiding subassembly being made to be placed in the second state and the second water conservancy diversion
Component is placed in first state；
Motor temperature limit value judgment module, for when the engine is not in operation, the cooling of the motor and inverter to be flowed through in judgement
Whether fluid temperature (F.T.) exceeds motor temperature limit value；
4th control module, for making first guiding subassembly be placed in the second state and the when exceeding motor temperature limit value
Two guiding subassemblies are placed in first state；
5th control module is all placed in first guiding subassembly, the second guiding subassembly when without departing from motor temperature limit value
First state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410805988.9A CN105774528B (en) | 2014-12-19 | 2014-12-19 | The cooling device and its control method and system of hybrid vehicle |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410805988.9A CN105774528B (en) | 2014-12-19 | 2014-12-19 | The cooling device and its control method and system of hybrid vehicle |
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| Publication Number | Publication Date |
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| CN105774528A CN105774528A (en) | 2016-07-20 |
| CN105774528B true CN105774528B (en) | 2018-12-11 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107298018A (en) * | 2017-07-12 | 2017-10-27 | 南京越博动力系统股份有限公司 | The cooling means and its cooling system of a kind of double-motor power system used for electric vehicle |
| CN109421514A (en) * | 2017-09-01 | 2019-03-05 | 比亚迪股份有限公司 | The cooling system and hybrid vehicle of hybrid vehicle |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5291960A (en) * | 1992-11-30 | 1994-03-08 | Ford Motor Company | Hybrid electric vehicle regenerative braking energy recovery system |
| CN201554541U (en) * | 2009-09-29 | 2010-08-18 | 北汽福田汽车股份有限公司 | Engine cooling system and automobile employing same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07253020A (en) * | 1994-03-15 | 1995-10-03 | Mitsubishi Motors Corp | Engine cooling device for hybrid vehicle |
| JP3292080B2 (en) * | 1997-02-25 | 2002-06-17 | 日産自動車株式会社 | Hybrid electric vehicle cooling system |
| JP2005147028A (en) * | 2003-11-18 | 2005-06-09 | Nissan Motor Co Ltd | Cooling device and method of hybrid car |
| US20100218916A1 (en) * | 2009-02-27 | 2010-09-02 | Ford Global Technolgies, Llc | Plug-in hybrid electric vehicle secondary cooling system |
| JP5769106B2 (en) * | 2011-03-16 | 2015-08-26 | アイシン精機株式会社 | Engine cooling circuit |
| DE102011052754B4 (en) * | 2011-08-16 | 2015-05-21 | Avl Software And Functions Gmbh | Drive unit with two coupled cooling circuits and method |
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2014
- 2014-12-19 CN CN201410805988.9A patent/CN105774528B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5291960A (en) * | 1992-11-30 | 1994-03-08 | Ford Motor Company | Hybrid electric vehicle regenerative braking energy recovery system |
| CN201554541U (en) * | 2009-09-29 | 2010-08-18 | 北汽福田汽车股份有限公司 | Engine cooling system and automobile employing same |
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