CN105774528A - Cooling device for hybrid electric vehicle and control method and system of cooling device - Google Patents
Cooling device for hybrid electric vehicle and control method and system of cooling device Download PDFInfo
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- CN105774528A CN105774528A CN201410805988.9A CN201410805988A CN105774528A CN 105774528 A CN105774528 A CN 105774528A CN 201410805988 A CN201410805988 A CN 201410805988A CN 105774528 A CN105774528 A CN 105774528A
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Abstract
The invention provides a cooling device for a hybrid electric vehicle and a control method and system of the cooling device. The cooling device comprises a first container used for storing cooling fluid, and a first flow guide loop used for cyclically conveying the cooling fluid in the first container to a motor, an inverter and an engine of the hybrid electric vehicle. The first flow guide loop comprises a first flow guide assembly connected with the engine in parallel and a second flow guide assembly connected with the first container in parallel. When the first flow guide assembly is in a first state, the cooling fluid in the first flow guide loop flows through the engine; when the first flow guide assembly is in a second state, the cooling fluid in the first flow guide loop does not flow through the engine; when the second flow guide assembly is in the first state, the cooling fluid in the first flow guide loop flows through the first container; and when the second flow guide assembly is in the second state, the cooling fluid in the first flow guide loop does not flow through the first container. Therefore, the technical problems that the starting performance of an engine in a hybrid electric vehicle in the prior art is poor and the exhausting performance of the hybrid electric vehicle in the prior art is poor are solved.
Description
Technical field
The present invention relates to hybrid vehicle technology field, particularly relate to the chiller of motor vehicle driven by mixed power and control method thereof and system.
Background technology
Current era, energy issue of world and environmental protection problem become the outstanding problem of restriction human social development, and in this context, new-energy automobile becomes the study hotspot of automobile industry, and wherein, hybrid vehicle is again the key areas of new-energy automobile research.Hybrid power, it is intended that according to real-world operation payload, heat power and electric power both power resources are carried out flexible modulation, to reach to improve a technology of energy conversion efficiency.
Motor vehicle driven by mixed power is by means of controlling technology, microprocessing, electronic technology and power source technology, cooperation by electromotor and two kinds of dynamical systems of motor, give full play to both advantages, machine driven system is replaced with electric drive system, directly regulate traction electric machine rotating speed, human computer conversation is realized by sensor and electronic control system, it had both omitted the change speed gear box in conventional fuel oil driver for vehicle, differential mechanism and Machinery Control System, reduce the mechanical wear in transmission, improve transmission efficiency, there is again the advantages such as failure rate is low, controllability are good.
Generally, the hybrid power system of the motor vehicle driven by mixed power of prior art includes electromotor, motor, accumulator, and is connected to the inverter between motor and accumulator, wherein, the quantity of motor can be one or two, and correspondingly, the quantity of inverter is one or two.The Main Function of the cooling system of motor vehicle driven by mixed power is exactly be dispersed in air to prevent the parts generation superheating phenomenons such as electromotor, motor, inverter by the heat of the parts such as electromotor, motor, inverter, thus preventing these parts from burning due to overheated causing.
But, in existing motor vehicle driven by mixed power, engine-cooling system and electromotor cooling system are independent from setting, and engine cold starting process cannot be avoided, and when engine cold starts, starting performance is poor, and discharge performance is also poor.
Summary of the invention
For this, the technical problem to be solved is in that in the motor vehicle driven by mixed power of prior art, and motor starting characteristic and discharge performance are poor.
For solving above-mentioned technical problem, the present invention by the following technical solutions:
A kind of chiller of motor vehicle driven by mixed power, including: for storing the first container of cooling fluid and for the described cooling fluid in described first container being circulated the first water conservancy diversion loop being delivered to the motor of described motor vehicle driven by mixed power, inverter, electromotor；Described first water conservancy diversion loop includes the first guiding subassembly being arranged in parallel with described electromotor and the second guiding subassembly being arranged in parallel with described first container, when described first guiding subassembly is placed in the first state, cooling fluid in described first water conservancy diversion loop flows through described electromotor and without flow through described first guiding subassembly, when being placed in the second state, then without flow through described electromotor and flow through described first guiding subassembly；When described second guiding subassembly is placed in the first state, the cooling fluid in described first water conservancy diversion loop flows through described first container and without flow through described second guiding subassembly, without flow through described first container and flow through described second guiding subassembly when being placed in the second state.
Preferably, described first guiding subassembly is placed in the second state and when the second guiding subassembly is placed in the first state, and described cooling fluid flows through described first container, motor, the first guiding subassembly, inverter by described first water conservancy diversion loop；Described first guiding subassembly is placed in the first state and when the second guiding subassembly is placed in the second state, and described cooling fluid flows through described second guiding subassembly, motor, electromotor, inverter by described first water conservancy diversion loop；When described first guiding subassembly, the second guiding subassembly are all placed in the first state, described cooling fluid flows through described first container, motor, electromotor, inverter by described first water conservancy diversion loop.
Preferably, described first guiding subassembly includes the first three-way valve, first mozzle of the second three-way valve and described first three-way valve of connection and described second three-way valve, first end of wherein said first three-way valve and the second end are connected in described first water conservancy diversion loop, first end of described second three-way valve and the second end are connected in described first water conservancy diversion loop, 3rd end of described first three-way valve is connected by described first mozzle with the 3rd end of described second three-way valve, when the first guiding subassembly is in described first state, first end of described first three-way valve and the conducting of the second end, first end of described second three-way valve and the conducting of the second end, cooling fluid flows through described electromotor through the first end and second end of described first three-way valve and flows through the first end and second end of described second three-way valve；When the first guiding subassembly is in described second state, second end of the first three-way valve and the conducting of the 3rd end, second end of the second three-way valve and the conducting of the 3rd end, cooling fluid is flow through the second end of described first three-way valve, the 3rd end and is flow through the 3rd end and second end of described second three-way valve by described first mozzle；Described second guiding subassembly includes the 3rd three-way valve, second mozzle of the 4th three-way valve and described 3rd three-way valve of connection and described 4th three-way valve, first end of wherein said 3rd three-way valve and the second end are connected in described first water conservancy diversion loop, first end of described 4th three-way valve and the second end are connected in described first water conservancy diversion loop, described 3rd end of the 3rd three-way valve is connected by described second mozzle with the 3rd end of described 4th three-way valve, when the second guiding subassembly is in described first state, first end of described 3rd three-way valve and the conducting of the second end, first end of described 4th three-way valve and the conducting of the second end, cooling fluid flows through described first container through the first end and second end of described 3rd three-way valve and flows through the first end and second end of described 4th three-way valve；When the second guiding subassembly is in described second state, second end of the 3rd three-way valve and the conducting of the 3rd end, second end of the 4th three-way valve and the conducting of the 3rd end, cooling fluid is flow through the second end of described 3rd three-way valve, the 3rd end and is flow through the 3rd end and second end of described 4th three-way valve by described second mozzle.
Preferably, described first three-way valve is between described electromotor and motor, described second three-way valve is between described electromotor and described inverter, and described 3rd three-way valve is between described first container and motor, and described 4th three-way valve is between described inverter and the first container.
Preferably, described first water conservancy diversion loop also includes providing the fluid pump cooling down fluid circulation power.
Preferably, above-mentioned chiller also includes the second container for storing cooling fluid and for cooling fluid is delivered to the second water conservancy diversion loop of described electromotor.
The present invention also provides for the control method of the chiller of the motor vehicle driven by mixed power according to technique scheme, it is characterised in that comprise the following steps: judge that whether the cooling fluid temperature (F.T.) flowing through described electromotor is lower than engine low temperature calibration value；When lower than engine low temperature calibration value, make described first guiding subassembly be placed in the first state and the second guiding subassembly is placed in the second state.
Preferably, above-mentioned control method is further comprising the steps of: when being not less than engine low temperature calibration value, judging that whether the cooling fluid temperature (F.T.) flowing through described electromotor is higher than engine high-temperature calibration value, described engine high-temperature calibration value is more than described engine low temperature calibration value；When not higher than engine high-temperature calibration value, make described first guiding subassembly be placed in the second state and the second guiding subassembly is placed in the first state.
Preferably, above-mentioned control method is further comprising the steps of: when higher than engine high-temperature calibration value, it is judged that whether electromotor works；When the engine operates, make described first guiding subassembly be placed in the second state and the second guiding subassembly is placed in the first state；When the engine is not in operation, it is judged that whether flow through the cooling fluid temperature (F.T.) of described motor and inverter beyond motor temperature limit value；When beyond motor temperature limit value, make described first guiding subassembly be placed in the second state and the second guiding subassembly is placed in the first state；When without departing from motor temperature limit value, described first guiding subassembly, the second guiding subassembly is made to be all placed in the first state.
The present invention also provides for the control system of the chiller of the motor vehicle driven by mixed power according to technique scheme, including: engine low temperature calibration value judge module, for judging that whether the cooling fluid temperature (F.T.) flowing through described electromotor is lower than engine low temperature calibration value；First controls module, when lower than engine low temperature calibration value, makes described first guiding subassembly be placed in the first state and the second guiding subassembly is placed in the second state.
Preferably, above-mentioned control system also includes: engine high-temperature calibration value judge module, for when being not less than engine low temperature calibration value, judging that whether the cooling fluid temperature (F.T.) flowing through described electromotor is higher than engine high-temperature calibration value, described engine high-temperature calibration value is more than described engine low temperature calibration value；Second controls module, for, when not higher than engine high-temperature calibration value, making described first guiding subassembly be placed in the second state and the second guiding subassembly is placed in the first state.
Preferably, above-mentioned control system also includes: engine condition judge module, for when higher than engine high-temperature calibration value, it is judged that whether electromotor works；3rd controls module, for when the engine operates, making described first guiding subassembly be placed in the second state and the second guiding subassembly is placed in the first state；Motor temperature limit value judge module, for when the engine is not in operation, it is judged that whether flows through the cooling fluid temperature (F.T.) of described motor and inverter beyond motor temperature limit value；4th controls module, for, when beyond motor temperature limit value, making described first guiding subassembly be placed in the second state and the second guiding subassembly is placed in the first state；5th controls module, when without departing from motor temperature limit value, makes described first guiding subassembly, the second guiding subassembly be all placed in the first state.
The technique scheme of the present invention has the advantage that compared to existing technology
The chiller of a kind of motor vehicle driven by mixed power of the present invention and control method thereof and system, owing to described chiller includes the first container for storing cooling fluid and for the described cooling fluid in described first container circulates the first water conservancy diversion loop being delivered to the motor of described motor vehicle driven by mixed power, inverter, electromotor；Described first water conservancy diversion loop includes the first guiding subassembly being arranged in parallel with described electromotor and the second guiding subassembly being arranged in parallel with described first container, when described first guiding subassembly is placed in the first state, cooling fluid in described first water conservancy diversion loop flows through described electromotor and without flow through described first guiding subassembly, when being placed in the second state, then without flow through described electromotor and flow through described first guiding subassembly；When described second guiding subassembly is placed in the first state, the cooling fluid in described first water conservancy diversion loop flows through described first container and without flow through described second guiding subassembly, without flow through described first container and flow through described second guiding subassembly when being placed in the second state.So, switching by the first guiding subassembly, the state of the second guiding subassembly, so that the cooling fluid in the first water conservancy diversion loop is engine warm-up or makes electromotor accelerate cooling, thus improving motor starting characteristic and discharge performance, and engine reliability and durability can be promoted.
Accompanying drawing explanation
In order to make present disclosure be more likely to be clearly understood, below according to specific embodiments of the invention and in conjunction with accompanying drawing, the present invention is further detailed explanation, wherein
Fig. 1 is the schematic diagram of the chiller of a kind of motor vehicle driven by mixed power of the embodiment of the present invention 1；
Fig. 2 a is the schematic diagram 1 of the chiller of a kind of motor vehicle driven by mixed power of the embodiment of the present invention 2；
Fig. 2 b is the schematic diagram 2 of the chiller of a kind of motor vehicle driven by mixed power of the embodiment of the present invention 2；
Fig. 2 c is the schematic diagram 2 of the chiller of a kind of motor vehicle driven by mixed power of the embodiment of the present invention 2；
Fig. 2 d is the schematic diagram 3 of the chiller of a kind of motor vehicle driven by mixed power of the embodiment of the present invention 2；
Fig. 3 is the control method schematic flow sheet of the chiller of a kind of motor vehicle driven by mixed power of the embodiment of the present invention 3；
Fig. 4 is the structural representation of the control system of the chiller of a kind of motor vehicle driven by mixed power of the embodiment of the present invention 4.
Detailed description of the invention
Embodiment 1
Fig. 1 illustrates the chiller of a kind of motor vehicle driven by mixed power of the embodiment of the present invention, and the hybrid power system of described motor vehicle driven by mixed power includes first motor the 200, first inverter 300, electromotor 400.Described chiller includes first container the 100, first water conservancy diversion loop 500.First container 100 is used for storing cooling fluid, and the first water conservancy diversion loop 500 for being delivered to first motor the 200, first inverter 300, electromotor 400 by cooling fluid.Wherein, described cooling fluid is generally cooling water, it is also possible to for other cooling liquid or gas.First container 100 is generally the water tank of storage cooling water, it is also possible to for storing the container of other cooling liquid or gas.
The second guiding subassembly 520 that first water conservancy diversion loop 500 includes the first guiding subassembly 510 of being arranged in parallel with electromotor 400 and the first container 100 is arranged in parallel.When first guiding subassembly 510 is placed in the first state, electromotor 400 is flow through and without flow through described first guiding subassembly 510 by the cooling fluid in the first water conservancy diversion loop 500, when first guiding subassembly 510 is placed in the second state, without flow through electromotor 400 and flow through the first guiding subassembly 510 by the cooling fluid in the first water conservancy diversion loop 500.When second guiding subassembly 520 is placed in the first state, the first container 100 is flow through and without flow through described second guiding subassembly 520 by the cooling fluid in the first water conservancy diversion loop 500, when second guiding subassembly 520 is placed in the second state, without flow through the first container 100 and flow through the second guiding subassembly 520 by the cooling fluid in the first water conservancy diversion loop 500.
So, switching by the state of first guiding subassembly the 510, second guiding subassembly 520, can so that the cooling fluid in the first water conservancy diversion loop 500 be engine warm-up or makes electromotor accelerate cooling, thus improving motor starting characteristic and discharge performance, and promote engine reliability and durability.
Specifically, the first guiding subassembly 510 includes first three-way valve the 511, second three-way valve 512 and connects the first mozzle 513 of the first three-way valve 511 and the second three-way valve 512.Referring to Fig. 1 or Fig. 2 a, first end of the first three-way valve 511 and the second end are connected in the first water conservancy diversion loop 500, first end of the second three-way valve 512 and the second end are connected in the first water conservancy diversion loop 500, and the 3rd end of the first three-way valve 511 and the 3rd end of the second three-way valve 512 are connected by the first mozzle 513.When the first guiding subassembly 510 is in the first state, first end of the first three-way valve 511 and the conducting of the second end, first end of the second three-way valve 512 and the conducting of the second end, cooling fluid flows through electromotor 400 through the first end and second end of the first three-way valve 511 and flows through the first end and second end of the second three-way valve 512.When the first guiding subassembly 510 is in the second state, second end of the first three-way valve 511 and the conducting of the 3rd end, second end of the second three-way valve 512 and the conducting of the 3rd end, cooling fluid flows through institute's the second end of the first three-way valve 511, the 3rd end and passes through the first mozzle 513 and flow through the 3rd end and second end of the second three-way valve 512.
Owing to the first guiding subassembly 510 includes first three-way valve the 511, second three-way valve 512 and connects the first mozzle 513 of the first three-way valve 511 and the second three-way valve 512, so it is not only simple in structure, convenient construction, and make the stability that the first guiding subassembly 510 switches between described first state and the second state high.
Second guiding subassembly 520 includes the 3rd three-way valve the 521, the 4th three-way valve 522 and connects the second mozzle 523 of the 3rd three-way valve 521 and the 4th three-way valve 522.Similarly, referring in conjunction with Fig. 1 or Fig. 2 a, first end of the 3rd three-way valve 521 and the second end are connected in the first water conservancy diversion loop 500, first end of the 4th three-way valve 522 and the second end are connected in the first water conservancy diversion loop 500, and the 3rd end of the 3rd three-way valve 521 and the 3rd end of the 4th three-way valve 522 are connected by the second mozzle 523.When the second guiding subassembly 520 is in the first state, first end of the 3rd three-way valve 521 and the conducting of the second end, first end of the 4th three-way valve 522 and the conducting of the second end, cooling fluid flows through the first container 100 through the first end and second end of the 3rd three-way valve 521 and flows through the first end and second end of the 4th three-way valve 522.When the second guiding subassembly 520 is in the second state, second end of the 3rd three-way valve 521 and the conducting of the 3rd end, second end of the 4th three-way valve 522 and the conducting of the 3rd end, cooling fluid is flowed through the second end of the 3rd three-way valve 521, the 3rd end and is flow through the 3rd end and second end of the 4th three-way valve 522 by the second mozzle 523.
Owing to the second guiding subassembly 520 includes the 3rd three-way valve the 521, the 4th three-way valve 522 and connects the second mozzle 523 of the 3rd three-way valve 521 and the 3rd three-way valve 522, so it is not only simple in structure, convenient construction, and make the stability that the second guiding subassembly 520 switches between described first state and the second state high.
Preferably, first three-way valve 511 is between electromotor 400 and the first motor 200, second three-way valve 512 is between electromotor 400 and the first inverter 300,3rd three-way valve position 521 is between the first container 100 and the first motor 200, and the 4th three-way valve 522 is between the first inverter 300 and the first container 100.
So design the position of first three-way valve the 511, second three-way valve the 512, the 3rd three-way valve the 521, the 4th three-way valve 522, give full play to the heat transference efficiency of cooling fluid, improve cooling effect further.
Preferably, the first water conservancy diversion loop 500 also includes providing the fluid pump 530 cooling down fluid circulation power.
So can be circulated offer power for cooling fluid in the first water conservancy diversion loop 500, improve the work efficiency of chiller, and then the fluid that cools down improved further in the first water conservancy diversion loop 500 is engine warm-up or makes electromotor accelerate the efficiency of cooling.
Preferably, described chiller also includes second container the 600, second water conservancy diversion loop 700, and second container 600 is used for storing cooling fluid, and the second water conservancy diversion loop 700 is for being delivered to electromotor 400 by cooling fluid.Wherein, second container 600 and the second water conservancy diversion loop 700 can be arranged on electromotor 400 outside, it is also possible to be disposed at electromotor 400 internal.
So, arranging of second container the 600, second water conservancy diversion loop 700 can individually provide cooling for electromotor 400, makes electromotor 400 cooling-down effect better, promotes engine reliability and durability further.
Embodiment 2
Fig. 2 a illustrates the chiller of another motor vehicle driven by mixed power of the embodiment of the present invention, is different in that with the chiller described in embodiment 1, and the hybrid power system of described motor vehicle driven by mixed power also includes second motor the 210, second inverter 310.First water conservancy diversion loop 500 for being delivered to first motor the 200, first inverter the 300, second motor the 210, second inverter 310, electromotor 400 by cooling fluid.Wherein, first three-way valve 511 is between electromotor 400 and the first motor 200, second three-way valve 512 is between electromotor 400 and the first inverter 300,3rd three-way valve position 521 is between the first container 100 and the second motor 210, and the 4th three-way valve 522 is between the second inverter 310 and the first container 100.
As shown in Figure 2 b, first guiding subassembly 510 is placed in the second state, second end of the first three-way valve 511 and the conducting of the 3rd end, second end of the second three-way valve 512 and the conducting of the 3rd end, cooling fluid flows through institute's the second end of the first three-way valve 511, the 3rd end and passes through the first mozzle 513 and flow through the 3rd end and second end of the second three-way valve 512；And the second guiding subassembly 520 is placed in the first state, first end of the 3rd three-way valve 521 and the conducting of the second end, first end of the 4th three-way valve 522 and the conducting of the second end, cooling fluid flows through the first container 100 through the first end and second end of the 3rd three-way valve 521 and flows through the first end and second end of the 4th three-way valve 522.So, cooling fluid flows through first container the 100, second motor the 210, first motor the 200, first inverter the 300, second inverter 310 and without flow through the second guiding subassembly 520 by the first water conservancy diversion loop 500.
Thus, it can be seen that the cooling circuit on right side is separate with the cooling circuit in left side from Fig. 2 b, so can ensure that the cooling effect of each cooling circuit.
Preferably, as shown in Figure 2 c, first guiding subassembly 510 is placed in the first state, first end of the first three-way valve 511 and the conducting of the second end, first end of the second three-way valve 512 and the conducting of the second end, cooling fluid flows through electromotor 400 through the first end and second end of the first three-way valve 511 and flows through the first end and second end of the second three-way valve 512；And the second guiding subassembly 520 is placed in the second state, second end of the 3rd three-way valve 521 and the conducting of the 3rd end, second end of the 4th three-way valve 522 and the conducting of the 3rd end, cooling fluid is flowed through the second end of the 3rd three-way valve 521, the 3rd end and is flow through the 3rd end and second end of the 4th three-way valve 522 by the second mozzle 523.So, cooling fluid flows through second motor the 210, first motor 200, electromotor the 400, first inverter the 300, second inverter 310 by the first water conservancy diversion loop 500.
Thus, when electromotor 400 temperature is too low, for instance during winter operation vehicle, second motor the 210, first motor 200 runs prior to electromotor 400, and the temperature of the cooling fluid in the first water conservancy diversion loop 500 is higher than the cooling fluid temperature (F.T.) in the second water conservancy diversion loop 700.The temperature that can utilize the cooling fluid in the first water conservancy diversion loop 500 carries out warming-up for electromotor 400.In order to ensure warming-up effect, the cooling fluid in the first water conservancy diversion loop 500 is without flow through the first container 100.Similarly, second container 600 and the second water conservancy diversion loop 700 can be arranged on electromotor 400 outside, it is also possible to be disposed at electromotor 400 internal.
Preferably, as shown in Figure 2 d, first guiding subassembly 510 is placed in the first state, first end of the first three-way valve 511 and the conducting of the second end, first end of the second three-way valve 512 and the conducting of the second end, cooling fluid flows through electromotor 400 through the first end and second end of the first three-way valve 511 and flows through the first end and second end of the second three-way valve 512；And the second guiding subassembly 520 is placed in the first state, first end of the 3rd three-way valve 521 and the conducting of the second end, first end of the 4th three-way valve 522 and the conducting of the second end, cooling fluid flows through the first container 100 through the first end and second end of the 3rd three-way valve 521 and flows through the first end and second end of the 4th three-way valve 522.So, cooling fluid flows through first container the 100, second motor the 210, first motor 200 by the first water conservancy diversion loop 500, electromotor the 400, first inverter the 300, second inverter 310 cools down fluid and flows through described first container, motor, electromotor, inverter and without flow through first guiding subassembly the 510, second guiding subassembly 520 by described first water conservancy diversion loop.
Thus, when carrying out slowing down or shutting down after the long-time heavy-duty service of vehicle, electromotor 400 quits work, and thermic load is higher.Being electromotor 400 fast cooling by the cooling fluid in the first water conservancy diversion loop 500, the parts to alleviate electromotor 400 are aging, promote reliability and the durability of electromotor 400.
Embodiment 3
Fig. 3 illustrates the control method of the chiller of a kind of motor vehicle driven by mixed power according to above-described embodiment, comprises the following steps:
Step S1, it is judged that whether flow through the cooling fluid temperature (F.T.) of described electromotor lower than engine low temperature calibration value.Namely judge that whether the cooling fluid temperature (F.T.) flowing through electromotor 400 is lower than engine low temperature calibration value, when lower than described engine low temperature calibration value, perform step S2, when being not less than engine low temperature calibration value, perform step S3.When the cooling fluid temperature (F.T.) of electromotor is lower than engine low temperature calibration value, motor starting characteristic and discharge performance are poor, engine low temperature calibration value generally may be set between 5 to 15 DEG C, being preferably provided in about 10 DEG C, those skilled in the art can determine engine low temperature calibration value according to real engine state.
Step S2, makes described first guiding subassembly be placed in the first state and the second guiding subassembly is placed in the second state.Even if the first guiding subassembly 510 is placed in the first state, and makes the second guiding subassembly 520 be placed in the second state.Thus, when electromotor 400 temperature is too low, for instance during winter operation vehicle, second motor the 210, first motor 200 runs prior to electromotor 400, it is possible to use the temperature of the cooling fluid in the first water conservancy diversion loop 500 is that electromotor 400 carries out warming-up.In order to ensure warming-up effect, the cooling fluid in the first water conservancy diversion loop 500 is without flow through the first container 100.
Step S3, it is judged that whether flow through the cooling fluid temperature (F.T.) of described electromotor higher than engine high-temperature calibration value.Namely when the cooling fluid temperature (F.T.) flowing through electromotor 400 is not less than engine high-temperature calibration value, it is judged that whether flow through the cooling fluid temperature (F.T.) of electromotor 400 higher than described engine high-temperature calibration value, when not higher than described engine high-temperature calibration value, perform step S4.When the cooling fluid temperature (F.T.) of electromotor is higher than engine high-temperature calibration value, electromotor natural cooling process is longer, engine high-temperature calibration value generally may be set between 95 to 105 DEG C, being preferably provided in about 100 DEG C, those skilled in the art can determine engine high-temperature calibration value according to real engine state.
Step S4, described first guiding subassembly is made to be placed in the second state and the second guiding subassembly is placed in the first state.Even if the first guiding subassembly 510 is placed in the second state, and make the second guiding subassembly 520 be placed in the first state, thus when first motor the 200, second motor the 210, first inverter the 310, second inverter 320 temperature is too high, first water conservancy diversion loop 500 and the second water conservancy diversion loop 700 are separate, the cooling fluid making the first water conservancy diversion loop 500 is individually for first motor the 200, second motor the 210, first inverter the 310, second inverter 320 and lowers the temperature, to strengthen cooling effect.
Step S5, when higher than engine high-temperature calibration value, it is judged that whether electromotor works.Namely judge whether electromotor 400 works, when electromotor 400 works, perform step S6, when electromotor 400 does not work, perform step S7.
Step S6, described first guiding subassembly is made to be placed in the second state and the second guiding subassembly is placed in the first state.With step S4.
Whether step S7, judgement flow through the cooling fluid temperature (F.T.) of described motor and inverter beyond motor temperature limit value.When beyond motor temperature limit value, perform step S8, when without departing from motor temperature limit value, perform step S9.When the cooling fluid temperature (F.T.) flowing through described motor and inverter is higher than motor temperature limit value, electric system thermic load is excessive, there is operation risk, even if now flowing through the cooling fluid temperature (F.T.) of electromotor higher than engine high-temperature calibration value, still electromotor is not cooled down, purpose be preferentially guarantee electromotor cooling system cooling effect, make electric system temperature reduce or be unlikely to heat up too fast.Motor temperature limit value generally may be set between 85 to 95 DEG C, it is preferable that is arranged on about 90 DEG C, and those skilled in the art can determine motor temperature limit value according to real engine state.
Step S8, described first guiding subassembly is made to be placed in the second state and the second guiding subassembly is placed in the first state.With step S4, S6.
Step S9, described first guiding subassembly, the second guiding subassembly is made to be all placed in the first state.Even if the first guiding subassembly 510 is placed in the first state, and makes the second guiding subassembly 520 be placed in the first state.Thus, when carrying out slowing down or shutting down after the long-time heavy-duty service of vehicle, electromotor 400 quits work, and thermic load is higher.Now utilize the temperature cooling down fluid in the first water conservancy diversion loop 500 temperature lower than the cooling fluid in the second water conservancy diversion loop 700.Being electromotor 400 fast cooling by the cooling fluid in the first water conservancy diversion loop 500, the parts to alleviate electromotor 400 are aging, promote reliability and the durability of electromotor 400.
Embodiment 4:
Fig. 4 illustrates the control system of the chiller of a kind of motor vehicle driven by mixed power according to above-described embodiment, controls module 20 including engine low temperature calibration value judge module 10, first.
Engine low temperature calibration value judge module 10 is for judging that whether the cooling fluid temperature (F.T.) flowing through described electromotor is lower than engine low temperature calibration value, corresponding with the step S1 in embodiment 4.
First controls module 20 when lower than engine low temperature calibration value, makes described first guiding subassembly be placed in the first state and the second guiding subassembly is placed in the second state, corresponding with the step S2 in embodiment 4.
When the cooling fluid temperature (F.T.) of electromotor is lower than engine low temperature calibration value, motor starting characteristic and discharge performance are poor, engine low temperature calibration value generally may be set between 5 to 15 DEG C, being preferably provided in about 10 DEG C, those skilled in the art can determine engine low temperature calibration value according to real engine state.
Preferably, described control system also includes engine high-temperature calibration value judge module the 30, second control module 40.
Engine high-temperature calibration value judge module 30 is for when being not less than engine low temperature calibration value, judge that whether the cooling fluid temperature (F.T.) flowing through described electromotor is higher than engine high-temperature calibration value, described engine high-temperature calibration value is more than described engine low temperature calibration value, corresponding with the step S3 in embodiment 4.
Second controls module 40 when not higher than engine high-temperature calibration value, makes described first guiding subassembly be placed in the second state and the second guiding subassembly is placed in the first state, corresponding with the step S4 in embodiment 4.
When the cooling fluid temperature (F.T.) of electromotor is higher than engine high-temperature calibration value, electromotor natural cooling process is longer, engine high-temperature calibration value generally may be set between 95 to 105 DEG C, being preferably provided in about 100 DEG C, those skilled in the art can determine engine high-temperature calibration value according to real engine state.
Preferably, described control system also includes engine condition judge module the 50, the 3rd control module 60, motor temperature limit value judge module the 70, the 4th controls module the 80, the 5th and controls module 90.
Engine condition judge module 50 is for when higher than engine high-temperature calibration value, it is judged that whether electromotor works.Corresponding with the step S5 in embodiment 3.
3rd controls module 60 for when the engine operates, making described first guiding subassembly be placed in the second state and the second guiding subassembly is placed in the first state.Corresponding with the step S6 in embodiment 3.
Motor temperature limit value judge module 70 is for when the engine is not in operation, it is judged that whether flow through the cooling fluid temperature (F.T.) of described motor and inverter beyond motor temperature limit value.Corresponding with the step S7 in embodiment 3.
4th controls module 80 for, when beyond motor temperature limit value, making described first guiding subassembly be placed in the second state and the second guiding subassembly is placed in the first state.Corresponding with the step S8 in embodiment 3.
5th controls module 90 for, when without departing from motor temperature limit value, making described first guiding subassembly, the second guiding subassembly be all placed in the first state.Corresponding with the step S9 in embodiment 3.When the cooling fluid temperature (F.T.) flowing through described motor and inverter is higher than motor temperature limit value, electric system thermic load is excessive, there is operation risk, even if now flowing through the cooling fluid temperature (F.T.) of electromotor higher than engine high-temperature calibration value, still electromotor is not cooled down, purpose be preferentially guarantee electromotor cooling system cooling effect, make electric system temperature reduce or be unlikely to heat up too fast.Motor temperature limit value generally may be set between 85 to 95 DEG C, it is preferable that is arranged on about 90 DEG C, and those skilled in the art can determine motor temperature limit value according to real engine state.
Obviously, above-described embodiment is only for clearly demonstrating example, and is not the restriction to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here without also cannot all of embodiment be given exhaustive.And the apparent change thus extended out or variation are still among the protection domain of the invention.
Claims (12)
1. the chiller of a motor vehicle driven by mixed power, it is characterized in that, including: for storing the first container of cooling fluid and for the described cooling fluid in described first container being circulated the first water conservancy diversion loop being delivered to the motor of described motor vehicle driven by mixed power, inverter, electromotor；
Described first water conservancy diversion loop includes the first guiding subassembly being arranged in parallel with described electromotor and the second guiding subassembly being arranged in parallel with described first container, when described first guiding subassembly is placed in the first state, cooling fluid in described first water conservancy diversion loop flows through described electromotor and without flow through described first guiding subassembly, when being placed in the second state, then without flow through described electromotor and flow through described first guiding subassembly；When described second guiding subassembly is placed in the first state, the cooling fluid in described first water conservancy diversion loop flows through described first container and without flow through described second guiding subassembly, without flow through described first container and flow through described second guiding subassembly when being placed in the second state.
2. the chiller of motor vehicle driven by mixed power according to claim 1, it is characterised in that:
Described first guiding subassembly is placed in the second state and when the second guiding subassembly is placed in the first state, and described cooling fluid flows through described first container, motor, the first guiding subassembly, inverter by described first water conservancy diversion loop；
Described first guiding subassembly is placed in the first state and when the second guiding subassembly is placed in the second state, and described cooling fluid flows through described second guiding subassembly, motor, electromotor, inverter by described first water conservancy diversion loop；
When described first guiding subassembly, the second guiding subassembly are all placed in the first state, described cooling fluid flows through described first container, motor, electromotor, inverter by described first water conservancy diversion loop.
null3. the chiller of motor vehicle driven by mixed power according to claim 2，It is characterized in that，Described first guiding subassembly includes the first three-way valve、First mozzle of the second three-way valve and described first three-way valve of connection and described second three-way valve，First end of wherein said first three-way valve and the second end are connected in described first water conservancy diversion loop，First end of described second three-way valve and the second end are connected in described first water conservancy diversion loop，3rd end of described first three-way valve is connected by described first mozzle with the 3rd end of described second three-way valve，When the first guiding subassembly is in described first state，First end of described first three-way valve and the conducting of the second end，First end of described second three-way valve and the conducting of the second end，Cooling fluid flows through described electromotor through the first end and second end of described first three-way valve and flows through the first end and second end of described second three-way valve；When the first guiding subassembly is in described second state, second end of the first three-way valve and the conducting of the 3rd end, second end of the second three-way valve and the conducting of the 3rd end, cooling fluid is flow through the second end of described first three-way valve, the 3rd end and is flow through the 3rd end and second end of described second three-way valve by described first mozzle；
Described second guiding subassembly includes the 3rd three-way valve, second mozzle of the 4th three-way valve and described 3rd three-way valve of connection and described 4th three-way valve, first end of wherein said 3rd three-way valve and the second end are connected in described first water conservancy diversion loop, first end of described 4th three-way valve and the second end are connected in described first water conservancy diversion loop, described 3rd end of the 3rd three-way valve is connected by described second mozzle with the 3rd end of described 4th three-way valve, when the second guiding subassembly is in described first state, first end of described 3rd three-way valve and the conducting of the second end, first end of described 4th three-way valve and the conducting of the second end, cooling fluid flows through described first container through the first end and second end of described 3rd three-way valve and flows through the first end and second end of described 4th three-way valve；When the second guiding subassembly is in described second state, second end of the 3rd three-way valve and the conducting of the 3rd end, second end of the 4th three-way valve and the conducting of the 3rd end, cooling fluid is flow through the second end of described 3rd three-way valve, the 3rd end and is flow through the 3rd end and second end of described 4th three-way valve by described second mozzle.
4. the chiller of motor vehicle driven by mixed power according to claim 3, it is characterized in that, described first three-way valve is between described electromotor and motor, described second three-way valve is between described electromotor and described inverter, described 3rd three-way valve is between described first container and motor, and described 4th three-way valve is between described inverter and the first container.
5. the chiller of motor vehicle driven by mixed power according to claim 1, it is characterised in that described first water conservancy diversion loop also includes the fluid pump providing cooling fluid circulation power.
6. the chiller of the motor vehicle driven by mixed power according to any one of claim 1-5, it is characterised in that also include the second container for storing cooling fluid and for cooling fluid being delivered to the second water conservancy diversion loop of described electromotor.
7. the control method of the chiller of the motor vehicle driven by mixed power described in an any one of claim 1-6, it is characterised in that comprise the following steps:
Judge that whether the cooling fluid temperature (F.T.) flowing through described electromotor is lower than engine low temperature calibration value；
When lower than engine low temperature calibration value, make described first guiding subassembly be placed in the first state and the second guiding subassembly is placed in the second state.
8. the control method of the chiller of motor vehicle driven by mixed power according to claim 7, it is characterised in that further comprising the steps of:
When being not less than engine low temperature calibration value, it is judged that whether flowing through the cooling fluid temperature (F.T.) of described electromotor higher than engine high-temperature calibration value, described engine high-temperature calibration value is more than described engine low temperature calibration value；
When not higher than engine high-temperature calibration value, make described first guiding subassembly be placed in the second state and the second guiding subassembly is placed in the first state.
9. the control method of the chiller of motor vehicle driven by mixed power according to claim 8, it is characterised in that further comprising the steps of:
When higher than engine high-temperature calibration value, it is judged that whether electromotor works；
When the engine operates, make described first guiding subassembly be placed in the second state and the second guiding subassembly is placed in the first state；
When the engine is not in operation, it is judged that whether flow through the cooling fluid temperature (F.T.) of described motor and inverter beyond motor temperature limit value；
When beyond motor temperature limit value, make described first guiding subassembly be placed in the second state and the second guiding subassembly is placed in the first state；
When without departing from motor temperature limit value, described first guiding subassembly, the second guiding subassembly is made to be all placed in the first state.
10. the control system of the chiller of the motor vehicle driven by mixed power described in an any one of claim 1-6, it is characterised in that including:
Engine low temperature calibration value judge module, for judging that whether the cooling fluid temperature (F.T.) flowing through described electromotor is lower than engine low temperature calibration value；
First controls module, when lower than engine low temperature calibration value, makes described first guiding subassembly be placed in the first state and the second guiding subassembly is placed in the second state.
11. the control system of the chiller of motor vehicle driven by mixed power according to claim 10, it is characterised in that also include:
Engine high-temperature calibration value judge module, for when being not less than engine low temperature calibration value, it is judged that whether flowing through the cooling fluid temperature (F.T.) of described electromotor higher than engine high-temperature calibration value, described engine high-temperature calibration value is more than described engine low temperature calibration value；
Second controls module, for, when not higher than engine high-temperature calibration value, making described first guiding subassembly be placed in the second state and the second guiding subassembly is placed in the first state.
12. the control system of the chiller of motor vehicle driven by mixed power according to claim 11, it is characterised in that also include:
Engine condition judge module, for when higher than engine high-temperature calibration value, it is judged that whether electromotor works；
3rd controls module, for when the engine operates, making described first guiding subassembly be placed in the second state and the second guiding subassembly is placed in the first state；
Motor temperature limit value judge module, for when the engine is not in operation, it is judged that whether flows through the cooling fluid temperature (F.T.) of described motor and inverter beyond motor temperature limit value；
4th controls module, for, when beyond motor temperature limit value, making described first guiding subassembly be placed in the second state and the second guiding subassembly is placed in the first state；
5th controls module, when without departing from motor temperature limit value, makes described first guiding subassembly, the second guiding subassembly be all placed in the first state.
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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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| 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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| 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 |
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| CN105774528B (en) | 2018-12-11 |
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