CN104590241A - Control system and method for hybrid vehicle - Google Patents
Control system and method for hybrid vehicle Download PDFInfo
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- CN104590241A CN104590241A CN201410708517.6A CN201410708517A CN104590241A CN 104590241 A CN104590241 A CN 104590241A CN 201410708517 A CN201410708517 A CN 201410708517A CN 104590241 A CN104590241 A CN 104590241A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W20/00—Control systems specially adapted for hybrid vehicles
- B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/24—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means
- B60W10/26—Conjoint control of vehicle sub-units of different type or different function including control of energy storage means for electrical energy, e.g. batteries or capacitors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/24—Energy storage means
- B60W2510/242—Energy storage means for electrical energy
- B60W2510/244—Charge state
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/24—Energy storage means
- B60W2510/242—Energy storage means for electrical energy
- B60W2510/246—Temperature
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/24—Energy storage means
- B60W2710/242—Energy storage means for electrical energy
- B60W2710/248—Current for loading or unloading
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses a control system and method for a hybrid vehicle. The system comprises a low voltage part, a high voltage part and a DC/DC converter. The low voltage part comprises an AC generator and a low-voltage battery which are electrically connected with each other, the AC generator is driven by an engine of the vehicle, and the engine is used for driving one shaft of the vehicle. The high voltage part comprises an electric drive device and a high-voltage battery which are electrically connected with each other, and the electric drive device is driven by the high-voltage battery and is used for driving the other shaft of the vehicle. The DC/DC converter is electrically connected with the AC generator, the low-voltage battery, the electric drive device and the high-voltage battery. When the charging level of the high-voltage battery is lower than a first threshold, the DC/DC converter transmits energy to the high-voltage battery from the AC generator and/or the low-voltage battery to be used for charging the high-voltage battery, and/or transmits the energy to the electric drive device to drive the other shaft.
Description
Technical field
The present invention relates generally to vehicle electric field, relates to a kind of control system for motor vehicle driven by mixed power and method particularly, relates more specifically to a kind of control system and method for the Energy Transfer for motor vehicle driven by mixed power.
Background technology
Usually, motor vehicle driven by mixed power has two independently running parts, i.e. combustion engine or compression engine running part and electric transmission part, and each running part is connected to axle, front axle or a rear axle of vehicle.Usually, driving engine part comprises high pressure integrated actuating electric generator (ISG) or tape starting electrical generator (BSG).ISG or BSG can provide extra energy to carry out propelled vehicles as motor, or provides electric energy as other parts that electrical generator is vehicle, also for starting combustion engine or compression engine.Electric transmission part comprises electromotive electric traction machine, dedicated transmission and mechanical interface, and electric transmission part carrys out propelled vehicles for driving another axle of vehicle.Electric transmission part also can have recovery (recuperation) function, and namely when the automobile decelerates, mechanical energy, as electrical generator, is converted to electric energy by electric transmission part, is high-tension battery charging.Usually, driving engine part is connected to (comprising ISG or BSG) front axle of vehicle, and electric transmission part is connected to rear axle.Similar, driving engine part (comprising ISG or BSG) also can be connected to the rear axle of vehicle, and electric transmission part is connected to front axle.
Driving engine part and electric transmission part can drive respective axle independently of each other, make the power system of vehicle can have following pattern: electric model, only electric transmission some work, this pattern only just activates when the charge level of high-tension battery is enough high; Hybrid mode, driving engine part and electric transmission part all work to drive automobile, and only have one of them running part to be engaged sometime; And a11wheel drive (AWD) pattern, engine section and electric transmission part work simultaneously, drive vehicle in a common direction (namely forward or backward).
Driven by power and AWD function, only have and just can use when the charge level of high-tension battery is enough high.And in AWD pattern, because the energy of high-tension battery in use constantly consumes, continuous print AWD is impossible.
Summary of the invention
In view of the above problems, propose the present invention, to provide a kind of control system for motor vehicle driven by mixed power and method, to overcome the problems referred to above or to solve the problem at least in part.
According to a first aspect of the present invention, provide a kind of control system for motor vehicle driven by mixed power, comprise: low-pressure section, comprise the alternating current generator and A-battery that are electrically connected to each other, described alternating current generator is by the engine drive of described vehicle, and described driving engine is for driving an axle of described vehicle; High-pressure section, comprises the electric transmission equipment and high-tension battery that are electrically connected to each other, and described electric transmission equipment is driven by described high-tension battery and for driving another axle of described vehicle; And DC-DC converter, be electrically connected with described alternating current generator, described A-battery, described electric transmission equipment and described high-tension battery respectively; Wherein, when the charge level of described high-tension battery is lower than first threshold, energy is transferred to described high-tension battery from described alternating current generator and/or described A-battery and thinks that described high-tension battery charges by described DC-DC converter, and/or is transferred to described electric transmission equipment to drive another axle described.
According to an embodiment of the present invention, wherein when the charge level of described high-tension battery be increased to be equal to or higher than described first threshold and lower than Second Threshold time, described DC-DC converter stops transmitting energy.
According to an embodiment of the present invention, wherein said low-pressure section also comprises low-voltage load, when the charge level of described high-tension battery be increased to be equal to or higher than described Second Threshold time, energy is transferred to described low-voltage load and/or described A-battery from described high-tension battery by described DC-DC converter.
According to an embodiment of the present invention, wherein said low-pressure section also comprises low-voltage load, and described alternating current generator and described A-battery are set to power to the low-voltage load of described vehicle.
According to an embodiment of the present invention, wherein said DC-DC converter is set to power to the low-voltage load of described vehicle.
According to an embodiment of the present invention, described system also comprises control unit for vehicle, be suitable for the charge level according to described high-tension battery, the temperature of described high-tension battery, the charge level of described A-battery, the running state of described alternating current generator, the state of described driving engine, ambient temperature, the speed of described vehicle, the accelerator pedal position of described vehicle, one or more in the brake pedal position of described vehicle, control the Energy Transfer of described DC-DC converter between described alternating current generator and/or described A-battery and described high-tension battery and/or described electric transmission equipment.
According to an embodiment of the present invention, described system also comprises control unit for vehicle, be suitable for: that detects in the brake pedal position of the charge level of described high-tension battery, the temperature of described high-tension battery, the charge level of described A-battery, the running state of described alternating current generator, the state of described driving engine, ambient temperature, the speed of described vehicle, the accelerator pedal position of described vehicle, described vehicle is multiple, to obtain multiple testing result respectively; The weight of pre-defined each testing result; And according to described each testing result and respective weight, control the Energy Transfer of described DC-DC converter between described alternating current generator and/or described A-battery and described high-tension battery and/or described electric transmission equipment.
According to a second aspect of the invention, provide a kind of control method for motor vehicle driven by mixed power, described vehicle comprises control system, described control system comprises: low-pressure section, comprise the alternating current generator and A-battery that are electrically connected to each other, described alternating current generator is by the engine drive of described vehicle, and described driving engine is for driving an axle of described vehicle; High-pressure section, comprises the electric transmission equipment and high-tension battery that are electrically connected to each other, and described electric transmission equipment is driven by described high-tension battery and for driving another axle of described vehicle; And DC-DC converter, be electrically connected with described alternating current generator, described A-battery, described electric transmission equipment and described high-tension battery respectively; Described method comprises: the charge level detecting described high-tension battery; And when the charge level of described high-tension battery is lower than first threshold, control described DC-DC converter energy is transferred to described high-tension battery from described alternating current generator and/or described A-battery thinks that described high-tension battery charges, and/or be transferred to described electric transmission equipment to drive another axle described.
According to an embodiment of the present invention, the described method charge level also comprised when described high-tension battery be increased to be equal to or higher than described first threshold and lower than Second Threshold time, control described DC-DC converter and stop transmitting energy.
According to an embodiment of the present invention, wherein said low-pressure section also comprises low-voltage load, when the described method charge level also comprised when described high-tension battery is increased to and is equal to or higher than described Second Threshold, control described DC-DC converter and energy is transferred to described low-voltage load and/or described A-battery from described high-tension battery.
According to an embodiment of the present invention, wherein said low-pressure section also comprises low-voltage load, and described method also comprises the described alternating current generator of control and described A-battery is powered to the low-voltage load of described vehicle.
According to an embodiment of the present invention, described method also comprise control described DC-DC converter power to the low-voltage load of described vehicle.
According to an embodiment of the present invention, described method also comprises: that detects in the brake pedal position of the charge level of described high-tension battery, the temperature of described high-tension battery, the charge level of described A-battery, the running state of described alternating current generator, the state of described driving engine, ambient temperature, the speed of described vehicle, the accelerator pedal position of described vehicle, described vehicle is one or more, to obtain testing result; And according to described testing result, control the Energy Transfer of described DC-DC converter between described alternating current generator and/or described A-battery and described high-tension battery and/or described electric transmission equipment.
According to an embodiment of the present invention, described method also comprises: that detects in the brake pedal position of the charge level of described high-tension battery, the temperature of described high-tension battery, the charge level of described A-battery, the running state of described alternating current generator, the state of described driving engine, ambient temperature, the speed of described vehicle, the accelerator pedal position of described vehicle, described vehicle is multiple, to obtain multiple testing result respectively; The weight of pre-defined each testing result; And according to described each testing result and respective weight, control the Energy Transfer of described DC-DC converter between described alternating current generator and/or described A-battery and described high-tension battery and/or described electric transmission equipment.
In a word, the control system of the motor vehicle driven by mixed power that embodiments of the present invention provide and method, by the Energy Transfer of DC-DC converter, charge for high-tension battery and/or provide continuous print Power supply for electric transmission part, improve the availability of electric transmission equipment; Do not need ISG or BSG, simplify the structure of control system, reduce the manufacturing cost of vehicle, and alleviate the weight of vehicle; By the decompression mode of DC-DC converter, be that low-voltage load and/or A-battery are powered by high-tension battery, reduce the consumption of fuel oil; And optimize the enabling and forbidding of various patterns of DC-DC converter, element can be protected and raise the efficiency, thus reducing fuel consumption.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technological means of the present invention can be better understood, and can be implemented according to the content of specification sheets, and can become apparent, below especially exemplified by the specific embodiment of the present invention to allow above and other objects of the present invention, feature and advantage.
Accompanying drawing explanation
By reading hereafter detailed description of the preferred embodiment, various other advantage and benefit will become cheer and bright for those of ordinary skill in the art.Accompanying drawing only for illustrating the object of preferred implementation, and does not think limitation of the present invention.And in whole accompanying drawing, represent identical parts by identical reference symbol.In the accompanying drawings:
Fig. 1 be according to an embodiment of the present invention in for the schematic diagram of the control system 100 of motor vehicle driven by mixed power;
Fig. 2 is the schematic diagram of middle according to an embodiment of the present invention DC-DC converter 130 Three models;
Fig. 3 is the diagram of circuit of the control method 200 for motor vehicle driven by mixed power according to an embodiment of the present invention; And
Fig. 4 is the diagram of circuit of the control method 200 for motor vehicle driven by mixed power according to another embodiment of the present invention.
Detailed description of the invention
Below with reference to accompanying drawings illustrative embodiments of the present disclosure is described in more detail.Although show illustrative embodiments of the present disclosure in accompanying drawing, however should be appreciated that can realize the disclosure in a variety of manners and not should limit by the embodiment of setting forth here.On the contrary, provide these embodiments to be in order to more thoroughly the disclosure can be understood, and complete for the scope of the present disclosure can be conveyed to those skilled in the art.But achieve the present invention although should be appreciated that those skilled in the art can dream up clearly not describe in this manual or record and be included in the various structures in spirit of the present invention, principle and scope.The all examples quoted from this specification sheets and conditional language are all for the object illustrated and instruct, principle prior art contributed to help reader understanding contriver and concept, and should be understood to be not limited to these the specifically example of citation and conditions.In addition, in order to be illustrated more clearly in, the detailed description for known devices, circuit and method is eliminated, not obscure description of the invention.Should be understood that unless stated otherwise, the feature in each embodiment described herein can combine mutually.
The quantity of each parts cited by it will be understood by those skilled in the art that in exemplary embodiment of the present invention is only for illustrative purposes, and not should be understood to limitation of the present invention.In the present invention, each parts can have other quantity, and do not depart from scope of the present invention.
In this manual, the function of each unit can realize by using specialized hardware or the hardware performing process that can combine with suitable software.Such hardware or specialized hardware can comprise special IC (ASIC), various other circuit, various treaters etc.When being realized by treater, this function can be provided by single application specific processor, single share processor or multiple independently treater (wherein some may be shared).In addition, treater should not be understood to specially to refer to can the hardware of executive software, but impliedly can comprise and be not limited to digital signal processor (DSP) hardware, be used for the read-only memory (ROM) (ROM) of storing software, random access memory (RAM) and non-volatile memory apparatus.
Embodiment one
According to a first aspect of the invention, a kind of control system 100 for motor vehicle driven by mixed power is provided.Fig. 1 shows a non-limiting and exemplary embodiment of control system 100 of the present invention.To should be appreciated that in Fig. 1 that the annexation of represented each unit is only example, those skilled in the art can adopt other annexation completely, as long as each unit also can realize function of the present invention under such annexation.
As shown in Figure 1, control system 100 comprises: low-pressure section 110, high-pressure section 120 and DC-DC converter 130.
Low-pressure section 110 comprises the alternating current generator 111 and A-battery 112 that are electrically connected to each other, and described alternating current generator 111 is driven by the driving engine 113 of described vehicle, and described driving engine 113 is for driving an axle of described vehicle.The present invention uses alternating current generator 111, instead of the traditional integrated actuating electric generator (ISG) or the tape starting electrical generator (BSG) that need electrical connection is all installed at vehicle two ends, simplify the structure of control system, reduce the manufacturing cost of vehicle, and alleviate the weight of vehicle.Wherein, described driving engine 113 can be combustion engine, compression engine, or the driving engine of other types.
High-pressure section 120 comprises the electric transmission equipment 121 and high-tension battery 122 that are electrically connected to each other, and described electric transmission equipment 121 is driven by described high-tension battery 122 and for driving another axle of described vehicle.Alternatively, when the vehicle is decelerating, mechanical energy can be converted to electric energy by electric transmission equipment 121, for high-tension battery 122 charges.Alternatively, high-pressure section 120 can comprise miscellaneous part, such as the high-voltage load such as heating or fridge equipment.
DC-DC converter 130 is electrically connected with described alternating current generator 111, described A-battery 112, described electric transmission equipment 121 and described high-tension battery 122 respectively.
Alternatively, driving engine 113 is for driving the front axle of described vehicle, and electric transmission equipment 121 is for driving the rear axle of described vehicle.Alternatively, driving engine 113 is for driving the rear axle of described vehicle, and electric transmission equipment 121 is for driving the front axle of described vehicle.
Alternatively, the hybrid electric vehicle according to exemplary embodiment of the present invention can only be driven by electric transmission equipment 121, and now this vehicle is in electric model.Alternatively, according to exemplary embodiment of the present invention, hybrid electric vehicle can both be driven by described driving engine 113, was also driven by electric transmission equipment 121, and usually only have a driving among driving engine 113 and electric transmission equipment 121 sometime, now this vehicle is in hybrid mode.Alternatively, according to exemplary embodiment of the present invention, hybrid electric vehicle can be driven by described driving engine 113 and electric transmission equipment 121 simultaneously simultaneously, and now this vehicle is in a11wheel drive pattern.
When the charge level of described high-tension battery 122 is lower than first threshold V1, energy is transferred to described high-tension battery 122 from described alternating current generator 113 and/or described A-battery 112 and thinks that described high-tension battery 122 charges by described DC-DC converter 130, and/or is transferred to described electric transmission equipment 121 to drive another axle described.Alternatively, first threshold V1 can be the charge level minimum value that high-tension battery 122 can drive electric transmission equipment 121, when the charge level of high-tension battery 122 is lower than first threshold V1, electric transmission equipment 121 only cannot obtain the energy being enough to drive vehicle from high-tension battery 122; Now, energy is transferred to described high-tension battery 122 from described alternating current generator 113 and/or described A-battery 112 and thinks that described high-tension battery 122 charges by described DC-DC converter 130, and/or is transferred to described electric transmission equipment 121 to drive another axle described.Now, DC-DC converter 130 is in boost mode, as shown in Figure 2.This mode, by the boost mode of DC-DC converter, by the Energy Transfer of low-pressure section to high-pressure section, can be charged for high-tension battery 122 and/or provides continuous print Power supply for electric transmission part, improve the availability of electric transmission equipment; And, by using DC-DC converter transmitting energy, and do not need ISG or BSG, and ISG or BSG is mounted to the parts required for engine drive driving it, reduce manufacture, packing cost, alleviate weight.
Alternatively, the energy that described DC-DC converter 130 transmits can only from alternating current generator 113, only from A-battery 112, or from both alternating current generator 113 and A-battery 112.Alternatively, to high-tension battery 122, Energy Transfer can be thought that high-tension battery 122 charges by described DC-DC converter 130, then drive electric transmission equipment 121 by high-tension battery 122, then drives another axle of vehicle by electric transmission equipment 121; Alternatively, energy can be directly transferred to electric transmission equipment 121 by described DC-DC converter 130, to drive another axle of vehicle; Alternatively, part energy can be transferred to high-tension battery 122 and think that high-tension battery 122 charges by described DC-DC converter 130, and by another part Energy Transfer to electric transmission equipment 121 to drive another axle of vehicle.
According to an illustrative embodiment of the invention, when the charge level of described high-tension battery 122 be increased to be equal to or higher than described first threshold V1 and lower than Second Threshold V2 time, described DC-DC converter 130 stops transmitting energy.Alternatively, Second Threshold V2 can be the minimum value of the charge level that high-tension battery 122 can be powered to low-voltage load and/or the A-battery 112 of electric transmission equipment 121 and vehicle simultaneously.When the charge level of high-tension battery 122 is enough to drive electric transmission equipment 121 to be driven another axle of vehicle by electric transmission equipment 121, and when not reaching the level that can simultaneously power to low-voltage load and/or the A-battery 112 of electric transmission equipment 121 and vehicle, namely the charge level of high-tension battery 122 be equal to or higher than first threshold V1 and lower than Second Threshold V2 time, DC-DC converter 130 stops transmitting energy, is in idle pulley.
Further, according to an illustrative embodiment of the invention, described low-pressure section also comprises low-voltage load 114, when DC-DC converter 130 is in boost mode or idle pulley, described alternating current generator 111 and described A-battery 112 are set to power to the low-voltage load 114 of described vehicle.
Further, according to an illustrative embodiment of the invention, described low-pressure section also comprises low-voltage load 114, when the charge level of described high-tension battery 122 be increased to be equal to or higher than described Second Threshold V2 time, energy is transferred to described low-voltage load 114 and/or described A-battery 112 from described high-tension battery 122 by described DC-DC converter 130.Alternatively, Second Threshold V2 can be the minimum value of the charge level that high-tension battery 122 can be powered to low-voltage load 114 and/or the A-battery 112 of electric transmission equipment 121 and vehicle simultaneously.When the charge level of high-tension battery 122 reaches the level that can power to low-voltage load 114 and/or the A-battery 112 of electric transmission equipment 121 and vehicle simultaneously, namely, when the charge level of high-tension battery 122 is higher than Second Threshold V2, energy is transferred to described low-voltage load 114 and/or described A-battery 112 from described high-tension battery 122 by DC-DC converter 130.Now, DC-DC converter 130 is in decompression mode.Alternatively, vehicle can be in electric model, hybrid mode or a11wheel drive pattern.
According to an illustrative embodiment of the invention, when DC-DC converter 130 is in decompression mode, described DC-DC converter 130 is set to power to the low-voltage load 114 of described vehicle.Alternatively, alternating current generator 111 is in free time or off-position.When DC-DC converter 130 is in decompression mode, energy is transferred to described low-voltage load 114 and/or described A-battery 112 from described high-tension battery 122 by DC-DC converter 130, for low-voltage load 114 and/or described A-battery 112 are powered; And as mentioned above, the energy of high-tension battery comes from the electric energy that changes mechanical energy becomes by electric transmission equipment 121 when the vehicle is decelerating, therefore, low-voltage load 114 and/or A-battery 112 are not obtain energy from the alternating current generator driven by driving engine, reduce the loss of driving engine, thus reduce fuel oil consumption.
According to an illustrative embodiment of the invention, when DC-DC converter 130 is in boost mode, described vehicle can be in electric model, namely driving engine is set to not drive a described axle of described vehicle and described electric transmission equipment is set to drive another axle described of described vehicle, to advance described vehicle; When DC-DC converter 130 is in boost mode, described vehicle also can be in a11wheel drive pattern, namely driving engine is set to drive a described axle of described vehicle and described electric transmission equipment is set to drive another axle described of described vehicle, to advance described vehicle.
According to an illustrative embodiment of the invention, when the charge level of described high-tension battery 122 be increased to be equal to or higher than described first threshold V1 and lower than Second Threshold V2 time, described DC-DC converter 130 stops transmitting energy and is in idle pulley.Now, the charge level of high-tension battery 122 is enough to drive electric transmission equipment 121 to be driven another axle of vehicle by electric transmission equipment 121, and do not reach can simultaneously to the level that low-voltage load and/or the A-battery 112 of electric transmission equipment 121 and vehicle are powered.In this case, described vehicle can be in electric model, namely driving engine is set to not drive a described axle of described vehicle and described electric transmission equipment is set to drive another axle described of described vehicle, described vehicle also can be in a11wheel drive pattern, namely driving engine is set to drive a described axle of described vehicle and described electric transmission equipment is set to drive another axle described of described vehicle, to advance described vehicle.
According to an illustrative embodiment of the invention, when the charge level of described high-tension battery 122 be increased to be equal to or higher than described Second Threshold V2 time, energy is transferred to described low-voltage load 114 and/or described A-battery 112 from described high-tension battery 122 by described DC-DC converter 130, and DC-DC converter 130 is in decompression mode.In this case, described vehicle can be in electric model, namely driving engine is set to not drive a described axle of described vehicle and described electric transmission equipment is set to drive another axle described of described vehicle, described vehicle also can be in a11wheel drive pattern, namely driving engine is set to drive a described axle of described vehicle and described electric transmission equipment is set to drive another axle described of described vehicle, to advance described vehicle.。
According to an illustrative embodiment of the invention, control system 100 also comprises control unit for vehicle (EMS), be suitable for the charge level according to described high-tension battery 122, the temperature of described high-tension battery 122, the charge level of described A-battery 112, the running state of described alternating current generator 111, the state of described driving engine 113, ambient temperature, the speed of described vehicle, the accelerator pedal position of described vehicle, one or more in the brake pedal position of described vehicle, control the Energy Transfer of described DC-DC converter 130 between described alternating current generator 111 and/or described A-battery 112 and described high-tension battery 122 and/or described electric transmission equipment 121.Alternatively, control unit for vehicle is suitable for the Energy Transfer controlling described DC-DC converter 130 according to the charge level of described high-tension battery 122, such as when the charge level of high-tension battery 122 is lower than first threshold, as 55%, DC-DC converter 130 can be controlled and be in boost mode; When the charge level of high-tension battery is higher than Second Threshold, as 65%, DC-DC converter 130 can be controlled and be in decompression mode.Alternatively, control unit for vehicle is suitable for the Energy Transfer controlling described DC-DC converter 130 according to the charge level of described A-battery 112, charge level such as when A-battery 112 is too low, controls the boost mode of forbidding DC-DC converter 130.Alternatively, control unit for vehicle is suitable for the Energy Transfer controlling described DC-DC converter 130 according to the running state of described alternating current generator 111, such as when alternating current generator 111 break down, generating capacity is poor, efficiency is lower time, control forbidding DC-DC converter 130 boost mode.Alternatively, control unit for vehicle be suitable for environmentally temperature to control the Energy Transfer of described DC-DC converter 130, such as at a lower temperature, the energy that high-tension battery 122 can be supplied to electric transmission equipment 121 is limited, then environmentally temperature controls the Energy Transfer of described DC-DC converter 130.Alternatively, control unit for vehicle is suitable for the Energy Transfer controlling described DC-DC converter 130 according to the accelerator pedal position of described vehicle, such as, between deceleration period, forbid boost mode.Alternatively, control unit for vehicle is suitable for according to the one or more Energy Transfers controlling described DC-DC converter 130 in above-mentioned factor, such as according to the position of the brake pedal of the charge level of high-tension battery 122, car speed and vehicle, such as, if the charge level of high-tension battery is lower, even if car retardation, so DC-DC converter 130 must keep boost mode.This method can optimize enabling and forbidding of the various patterns of DC-DC converter 130, can protect element and raise the efficiency, thus reduces fuel consumption.
According to an illustrative embodiment of the invention, system 100 also comprises control unit for vehicle, be suitable for: that detects in the brake pedal position of the charge level of described high-tension battery, the temperature of described high-tension battery, the charge level of described A-battery, the running state of described alternating current generator, the state of described driving engine, ambient temperature, the speed of described vehicle, the accelerator pedal position of described vehicle, described vehicle is multiple, to obtain multiple testing result respectively; The weight of pre-defined each testing result; And according to described each testing result and respective weight, control the Energy Transfer of described DC-DC converter between described alternating current generator and/or described A-battery and described high-tension battery and/or described electric transmission equipment.
Alternatively, if need the charge level paying the utmost attention to A-battery 112, when the charge level of A-battery 112 is too low, even if when the charge level of high-tension battery is lower than first threshold, control unit for vehicle still controls the boost mode forbidding DC-DC converter 130, then can be realized in the following manner by control unit for vehicle: detect the charge level of described high-tension battery and the charge level of described A-battery, to obtain two testing results; Being 0 by the weight definition of the testing result of high-tension battery charge level, is 1 by the weight definition of the testing result of A-battery charge level; And according to described each testing result and respective weight, namely only according to result of a measurement and its weight 1 of A-battery charge level, control the boost mode forbidding DC-DC converter 130.
Alternatively, as previously mentioned, when the automobile decelerates, mechanical energy, as electrical generator, is converted to electric energy by electric transmission part, is high-tension battery charging.If need when slowing down, make alternating current generator and/or A-battery also be high-tension battery charging simultaneously, then can be realized in the following manner by control unit for vehicle: the position detecting the brake pedal of the charge level of high-tension battery 122, car speed and vehicle, to obtain three testing results; The weight of these three testing results pre-defined, such as, is defined as 0.8,0.1 and 0.1 respectively by the position of the brake pedal of the charge level of high-tension battery 122, car speed and vehicle; And according to the weight of these three testing results and respective weight, pay the utmost attention to the charge level of high-tension battery 122, if the charge level of high-tension battery is lower, even if car retardation, so DC-DC converter 130 must keep boost mode, and the energy transmission efficiency of DC-DC converter 130 is determined by the weight of these three testing results and respective weight.This method can optimize enabling and forbidding of the various patterns of DC-DC converter 130, can protect element and raise the efficiency, thus reduces fuel consumption.
In a word, the control system 100 of the motor vehicle driven by mixed power that embodiments of the present invention provide, by the Energy Transfer of DC-DC converter, charge for high-tension battery 122 and/or provide continuous print Power supply for electric transmission part, improve the availability of electric transmission equipment; Do not need ISG or BSG, simplify the structure of control system, reduce the manufacturing cost of vehicle, and alleviate the weight of vehicle; By the decompression mode of DC-DC converter, be that low-voltage load and/or A-battery are powered by high-tension battery, reduce the consumption of fuel oil; And optimize the enabling and forbidding of various patterns of DC-DC converter, element can be protected and raise the efficiency, thus reducing fuel consumption.
Embodiment two
According to a second aspect of the invention, corresponding to as described in embodiment 1 according to the control system 100 for motor vehicle driven by mixed power of the present invention, provide a kind of control method 200 for motor vehicle driven by mixed power.
As shown in Figure 1, described vehicle comprises control system, and described control system 100 comprises: low-pressure section 110, high-pressure section 120 and DC-DC converter 130.
Low-pressure section 110 comprises the alternating current generator 111 and A-battery 112 that are electrically connected to each other, and described alternating current generator 111 is driven by the driving engine 113 of described vehicle, and described driving engine 113 is for driving an axle of described vehicle.The present invention uses alternating current generator 111, instead of the traditional integrated actuating electric generator (ISG) or the tape starting electrical generator (BSG) that need electrical connection is all installed at vehicle two ends, simplify the structure of control system, reduce the manufacturing cost of vehicle, and alleviate the weight of vehicle.Alternatively, low-pressure section 110 can comprise miscellaneous part, such as low-voltage load 114.
High-pressure section 120 comprises the electric transmission equipment 121 and high-tension battery 122 that are electrically connected to each other, and described electric transmission equipment 121 is driven by described high-tension battery 122 and for driving another axle of described vehicle.Alternatively, when the vehicle is decelerating, mechanical energy can be converted to electric energy by electric transmission equipment 121, for high-tension battery 122 charges.Alternatively, high-pressure section 120 can comprise miscellaneous part, such as the high-voltage load such as heating or fridge equipment.
DC-DC converter 130 is electrically connected with described alternating current generator 111, described A-battery 112, described electric transmission equipment 121 and described high-tension battery 122 respectively.
Alternatively, driving engine 113 is for driving the front axle of described vehicle, and electric transmission equipment 121 is for driving the rear axle of described vehicle.Alternatively, driving engine 113 is for driving the rear axle of described vehicle, and electric transmission equipment 121 is for driving the front axle of described vehicle.
Alternatively, the hybrid electric vehicle according to exemplary embodiment of the present invention can only be driven by electric transmission equipment 121, and now this vehicle is in electric model.Alternatively, according to exemplary embodiment of the present invention, hybrid electric vehicle can both be driven by described driving engine 113, was also driven by electric transmission equipment 121, and usually only have a driving among driving engine 113 and electric transmission equipment 121 sometime, now this vehicle is in hybrid mode.Alternatively, according to exemplary embodiment of the present invention, hybrid electric vehicle can be driven by described driving engine 113 and electric transmission equipment 121 simultaneously simultaneously, and now this vehicle is in a11wheel drive pattern.
Fig. 3 is the diagram of circuit of the control system 200 for motor vehicle driven by mixed power according to an embodiment of the present invention.Described method 200 comprises step S201: the charge level detecting described high-tension battery; And step S203: when the charge level of described high-tension battery 122 is lower than first threshold V1, control described DC-DC converter 130 energy is transferred to described high-tension battery 122 from described alternating current generator 113 and/or described A-battery 112 thinks that described high-tension battery 122 charges, and/or be transferred to described electric transmission equipment 121 to drive another axle described.Alternatively, first threshold V1 can be the charge level minimum value that high-tension battery 122 can drive electric transmission equipment 121, when the charge level of high-tension battery 122 is lower than first threshold V1, electric transmission equipment 121 only cannot obtain the energy being enough to drive vehicle from high-tension battery 122; Now, control described DC-DC converter 130 energy is transferred to described high-tension battery 122 from described alternating current generator 113 and/or described A-battery 112 thinks that described high-tension battery 122 charges, and/or be transferred to described electric transmission equipment 121 to drive another axle described.Now, DC-DC converter 130 is in boost mode, as shown in Figure 2.This mode, by the boost mode of DC-DC converter, by the Energy Transfer of low-pressure section to high-pressure section, can be charged for high-tension battery 122 and/or provides continuous print Power supply for electric transmission part, improve the availability of electric transmission equipment; And, by using DC-DC converter transmitting energy, and do not need ISG or BSG, and ISG or BSG is mounted to the parts required for engine drive driving it, reduce manufacture, packing cost, alleviate weight.
Alternatively, the energy that described DC-DC converter 130 transmits can only from alternating current generator 113, only from A-battery 112, or from both alternating current generator 113 and A-battery 112.Alternatively, to high-tension battery 122, Energy Transfer can be thought that high-tension battery 122 charges by described DC-DC converter 130, then drive electric transmission equipment 121 by high-tension battery 122, then drives another axle of vehicle by electric transmission equipment 121; Alternatively, energy can be directly transferred to electric transmission equipment 121 by described DC-DC converter 130, to drive another axle of vehicle; Alternatively, part energy can be transferred to high-tension battery 122 and think that high-tension battery 122 charges by described DC-DC converter 130, and by another part Energy Transfer to electric transmission equipment 121 to drive another axle of vehicle.
According to an illustrative embodiment of the invention, as shown in Figure 4, described method 200 also comprises step S205: when the charge level of described high-tension battery 122 be increased to be equal to or higher than described first threshold V1 and lower than Second Threshold V2 time, control described DC-DC converter 130 and stop transmitting energy.Alternatively, Second Threshold V2 can be the minimum value of the charge level that high-tension battery 122 can be powered to low-voltage load and/or the A-battery 112 of electric transmission equipment 121 and vehicle simultaneously.When the charge level of high-tension battery 122 is enough to drive electric transmission equipment 121 to be driven another axle of vehicle by electric transmission equipment 121, and when not reaching the level that can simultaneously power to low-voltage load and/or the A-battery 112 of electric transmission equipment 121 and vehicle, namely the charge level of high-tension battery 122 be equal to or higher than first threshold V1 and lower than Second Threshold V2 time, control DC-DC converter 130 and stop transmitting energy, be in idle pulley.
According to an illustrative embodiment of the invention, described low-pressure section also comprises low-voltage load 114, described method 200 also comprises: when DC-DC converter 130 is in boost mode or idle pulley, controls described alternating current generator 111 and described A-battery 112 is powered to the low-voltage load 114 of described vehicle.
According to an illustrative embodiment of the invention, as described in Figure 4, described low-pressure section also comprises low-voltage load 114, described method 200 also comprises step S207: when the charge level of described high-tension battery 122 be increased to be equal to or higher than described Second Threshold V2 time, control described DC-DC converter 130 and energy be transferred to described low-voltage load 114 and/or described A-battery 112 from described high-tension battery 122.Alternatively, Second Threshold V2 can be the minimum value of the charge level that high-tension battery 122 can be powered to low-voltage load 114 and/or the A-battery 112 of electric transmission equipment 121 and vehicle simultaneously.When the charge level of high-tension battery 122 reaches the level that can power to low-voltage load 114 and/or the A-battery 112 of electric transmission equipment 121 and vehicle simultaneously, namely, when the charge level of high-tension battery 122 is higher than Second Threshold V2, controls DC-DC converter 130 and energy is transferred to described low-voltage load 114 and/or described A-battery 112 from described high-tension battery 122.Now, DC-DC converter 130 is in decompression mode.Alternatively, vehicle can be in electric model, hybrid mode or a11wheel drive pattern.
According to an illustrative embodiment of the invention, as shown in Figure 4, described method 200 also comprises step S209: when DC-DC converter 130 is in decompression mode, controls described DC-DC converter 130 and is set to power to the low-voltage load 114 of described vehicle.Alternatively, alternating current generator 111 is in free time or off-position.When DC-DC converter 130 is in decompression mode, control DC-DC converter 130 and energy is transferred to described low-voltage load 114 and/or described A-battery 112 from described high-tension battery 122, for low-voltage load 114 and/or described A-battery 112 are powered; And as mentioned above, the energy of high-tension battery comes from the electric energy that changes mechanical energy becomes by electric transmission equipment 121 when the vehicle is decelerating, therefore, low-voltage load 114 and/or A-battery 112 are not obtain energy from the alternating current generator driven by driving engine, reduce the loss of driving engine, thus reduce fuel oil consumption.
According to an illustrative embodiment of the invention, described method 200 also comprises: when DC-DC converter 130 is in boost mode, control described vehicle and be in electric model, namely the described axle that driving engine does not drive described vehicle is controlled, and control another axle described of vehicle described in described electric transmission device drives, to advance described vehicle.Alternatively, described method 200 also comprises: when DC-DC converter 130 is in boost mode, control described vehicle and be in a11wheel drive pattern, namely control a described axle of vehicle described in engine drive and control another axle described of vehicle described in described electric transmission device drives, to advance described vehicle.
According to an illustrative embodiment of the invention, described method 200 also comprises: when the charge level of described high-tension battery 122 be increased to be equal to or higher than described first threshold V1 and lower than Second Threshold V2 time, control described DC-DC converter 130 and stop transmitting energy and be in idle pulley.Now, the charge level of high-tension battery 122 is enough to drive electric transmission equipment 121 to be driven another axle of vehicle by electric transmission equipment 121, and do not reach can simultaneously to the level that low-voltage load and/or the A-battery 112 of electric transmission equipment 121 and vehicle are powered.In this case, method 200 can control described vehicle and be in electric model, namely controls driving engine and does not drive a described axle of described vehicle and control another axle described of vehicle described in described electric transmission device drives; Alternatively, method 200 also can comprise: control described vehicle and be also in a11wheel drive pattern, namely controls a described axle of vehicle described in engine drive and controls another axle described of vehicle described in described electric transmission device drives, to advance described vehicle.
According to an illustrative embodiment of the invention, method 200 also can comprise: when the charge level of described high-tension battery 122 be increased to be equal to or higher than described Second Threshold V2 time, control described DC-DC converter 130 and energy is transferred to described low-voltage load 114 and/or described A-battery 112 from described high-tension battery 122, and DC-DC converter 130 is in decompression mode.In this case, method 200 can control described vehicle can be in electric model, namely controls driving engine and does not drive a described axle of described vehicle and control another axle described of vehicle described in described electric transmission device drives; Alternatively, method 200 also can comprise: control described vehicle and be in a11wheel drive pattern, namely controls a described axle of vehicle described in engine drive and controls another axle described of vehicle described in described electric transmission device drives, to advance described vehicle.
According to an illustrative embodiment of the invention, described method 200 also comprises: that detects in the brake pedal position of the charge level of described high-tension battery 122, the temperature of described high-tension battery 122, the charge level of described A-battery 112, the running state of described alternating current generator 111, the state of described driving engine 113, ambient temperature, the speed of described vehicle, the accelerator pedal position of described vehicle, described vehicle is one or more, to obtain testing result; And control the Energy Transfer of described DC-DC converter 130 between described alternating current generator 111 and/or described A-battery 112 and described high-tension battery 122 and/or described electric transmission equipment 121 according to described testing result, as shown in Figure 4.Alternatively, described method 200 comprises the Energy Transfer controlling described DC-DC converter 130 according to the charge level of described high-tension battery 122, such as when the charge level of high-tension battery 122 is lower than first threshold, as 55%, DC-DC converter 130 can be controlled and be in boost mode; When the charge level of high-tension battery is higher than Second Threshold, as 65%, DC-DC converter 130 can be controlled and be in decompression mode.Alternatively, method 200 comprises: the Energy Transfer controlling described DC-DC converter 130 according to the running state of described alternating current generator 111, such as when alternating current generator 111 break down, generating capacity is poor, efficiency is lower time, control forbidding DC-DC converter 130 boost mode.Alternatively, method 200 comprises: environmentally temperature is to control the Energy Transfer of described DC-DC converter 130, such as at a lower temperature, the energy that high-tension battery 122 can be supplied to electric transmission equipment 121 is limited, then environmentally temperature controls the Energy Transfer of described DC-DC converter 130.Alternatively, method 200 comprises: the Energy Transfer controlling described DC-DC converter 130 according to the accelerator pedal position of described vehicle, such as, between deceleration period, forbid boost mode.
According to an illustrative embodiment of the invention, described method 200 also comprises: that detects in the brake pedal position of the charge level of described high-tension battery, the temperature of described high-tension battery, the charge level of described A-battery, the running state of described alternating current generator, the state of described driving engine, ambient temperature, the speed of described vehicle, the accelerator pedal position of described vehicle, described vehicle is multiple, to obtain multiple testing result respectively; The weight of pre-defined each testing result; And according to described each testing result and respective weight, control the Energy Transfer of described DC-DC converter between described alternating current generator and/or described A-battery and described high-tension battery and/or described electric transmission equipment, as shown in Figure 4.
Alternatively, if need the charge level paying the utmost attention to A-battery 112, when the charge level of A-battery 112 is too low, even if when the charge level of high-tension battery is lower than first threshold, still the boost mode of forbidding DC-DC converter 130 is controlled, following embodiment then by method 200 realizes: detect the charge level of described high-tension battery and the charge level of described A-battery, to obtain two testing results; Being 0 by the weight definition of the testing result of high-tension battery charge level, is 1 by the weight definition of the testing result of A-battery charge level; And according to described each testing result and respective weight, namely only according to result of a measurement and its weight 1 of A-battery charge level, control the boost mode forbidding DC-DC converter 130.
Alternatively, as previously mentioned, when the automobile decelerates, mechanical energy, as electrical generator, is converted to electric energy by electric transmission part, is high-tension battery charging.If need when slowing down, make alternating current generator and/or A-battery also be high-tension battery charging simultaneously, following embodiment then by method 200 realizes: the position detecting the brake pedal of the charge level of high-tension battery 122, car speed and vehicle, to obtain three testing results; The weight of these three testing results pre-defined, such as, is defined as 0.8,0.1 and 0.1 respectively by the position of the brake pedal of the charge level of high-tension battery 122, car speed and vehicle; And according to the weight of these three testing results and respective weight, pay the utmost attention to the charge level of high-tension battery 122, if the charge level of high-tension battery is lower, even if car retardation, so DC-DC converter 130 must keep boost mode, and the energy transmission efficiency of DC-DC converter 130 is determined by the weight of these three testing results and respective weight.This method can optimize enabling and forbidding of the various patterns of DC-DC converter 130, can protect element and raise the efficiency, thus reduces fuel consumption.
In a word, the control method 200 of the motor vehicle driven by mixed power that embodiments of the present invention provide, by the Energy Transfer of DC-DC converter, charge for high-tension battery 122 and/or provide continuous print Power supply for electric transmission part, improve the availability of electric transmission equipment; Do not need ISG or BSG, simplify the structure of control system, reduce the manufacturing cost of vehicle, and alleviate the weight of vehicle; By the decompression mode of DC-DC converter, be that low-voltage load and/or A-battery are powered by high-tension battery, reduce the consumption of fuel oil; And optimize the enabling and forbidding of various patterns of DC-DC converter, element can be protected and raise the efficiency, thus reducing fuel consumption.
In this manual, a large amount of details is described.But, should be appreciated that embodiments of the present invention can be implemented when not having these details.In some embodiments, be not shown specifically known method, structure and technology, not make reader obscure the understanding of the principle to this specification sheets.
It will be understood by those skilled in the art that and can the module in the device in each embodiment adaptively be changed, and they are arranged in one or more devices different from this embodiment.Except the situation that feature or process are mutually repelled, any combination can be adopted, to method any disclosed in this specification sheets in steps or all modules of any device combine.Unless expressly stated otherwise, each feature disclosed in this specification sheets can by providing identical, equivalent or similar object alternative features replaces.
The present invention will be described instead of limit the invention to it should be noted that above-mentioned embodiment, and those skilled in the art are not when departing from the scope of claims, can design various alternate embodiments.In detail in the claims, the sequence of feature does not also mean that any particular order of feature, and especially, in claim to a method each step order and do not mean that these steps must perform according to this order.On the contrary, these steps can perform with any order suitably.In detail in the claims, any reference marker being positioned at bracket should be understood as limitations on claims.Term " comprises " or " comprising " is not got rid of existence and do not arrange module in the claims or step.The term "a" or "an" be positioned at before module or step is not got rid of and be there is multiple such module or step.The use of term " first ", " second " and " the 3rd " etc. does not represent any order, can be title by these terminological interpretations.
Claims (14)
1., for a control system for motor vehicle driven by mixed power, comprising:
Low-pressure section, comprises the alternating current generator and A-battery that are electrically connected to each other, and described alternating current generator is by the engine drive of described vehicle, and described driving engine is for driving an axle of described vehicle;
High-pressure section, comprises the electric transmission equipment and high-tension battery that are electrically connected to each other, and described electric transmission equipment is driven by described high-tension battery and for driving another axle of described vehicle; And
DC-DC converter, is electrically connected with described alternating current generator, described A-battery, described electric transmission equipment and described high-tension battery respectively;
Wherein, when the charge level of described high-tension battery is lower than first threshold, energy is transferred to described high-tension battery from described alternating current generator and/or described A-battery and thinks that described high-tension battery charges by described DC-DC converter, and/or is transferred to described electric transmission equipment to drive another axle described.
2. the system as claimed in claim 1, wherein when the charge level of described high-tension battery be increased to be equal to or higher than described first threshold and lower than Second Threshold time, described DC-DC converter stops transmitting energy.
3. system as claimed in claim 2, wherein said low-pressure section also comprises low-voltage load, when the charge level of described high-tension battery be increased to be equal to or higher than described Second Threshold time, energy is transferred to described low-voltage load and/or described A-battery from described high-tension battery by described DC-DC converter.
4. system as claimed in claim 1 or 2, wherein said low-pressure section also comprises low-voltage load, and described alternating current generator and described A-battery are set to power to the low-voltage load of described vehicle.
5. system as claimed in claim 3, wherein said DC-DC converter is set to power to the low-voltage load of described vehicle.
6. the system according to any one of claim 1-3, also comprise control unit for vehicle, be suitable for the charge level according to described high-tension battery, the temperature of described high-tension battery, the charge level of described A-battery, the running state of described alternating current generator, the state of described driving engine, ambient temperature, the speed of described vehicle, the accelerator pedal position of described vehicle, one or more in the brake pedal position of described vehicle, control the Energy Transfer of described DC-DC converter between described alternating current generator and/or described A-battery and described high-tension battery and/or described electric transmission equipment.
7. the system according to any one of claim 1-3, also comprises control unit for vehicle, is suitable for:
That detects in the brake pedal position of the charge level of described high-tension battery, the temperature of described high-tension battery, the charge level of described A-battery, the running state of described alternating current generator, the state of described driving engine, ambient temperature, the speed of described vehicle, the accelerator pedal position of described vehicle, described vehicle is multiple, to obtain multiple testing result respectively;
The weight of pre-defined each testing result; And
According to described each testing result and respective weight, control the Energy Transfer of described DC-DC converter between described alternating current generator and/or described A-battery and described high-tension battery and/or described electric transmission equipment.
8. for a control method for motor vehicle driven by mixed power, described vehicle comprises control system, and described control system comprises:
Low-pressure section, comprises the alternating current generator and A-battery that are electrically connected to each other, and described alternating current generator is by the engine drive of described vehicle, and described driving engine is for driving an axle of described vehicle;
High-pressure section, comprises the electric transmission equipment and high-tension battery that are electrically connected to each other, and described electric transmission equipment is driven by described high-tension battery and for driving another axle of described vehicle; And
DC-DC converter, is electrically connected with described alternating current generator, described A-battery, described electric transmission equipment and described high-tension battery respectively;
Described method comprises:
Detect the charge level of described high-tension battery; And
When the charge level of described high-tension battery is lower than first threshold, control described DC-DC converter energy is transferred to described high-tension battery from described alternating current generator and/or described A-battery thinks that described high-tension battery charges, and/or be transferred to described electric transmission equipment to drive another axle described.
9. method as claimed in claim 8, the charge level also comprised when described high-tension battery be increased to be equal to or higher than described first threshold and lower than Second Threshold time, control described DC-DC converter and stop transmitting energy.
10. method as claimed in claim 9, wherein said low-pressure section also comprises low-voltage load, when the described method charge level also comprised when described high-tension battery is increased to and is equal to or higher than described Second Threshold, control described DC-DC converter and energy is transferred to described low-voltage load and/or described A-battery from described high-tension battery.
11. methods as claimed in claim 8 or 9, wherein said low-pressure section also comprises low-voltage load, and described method also comprises the described alternating current generator of control and described A-battery is powered to the low-voltage load of described vehicle.
12. methods as claimed in claim 10, also comprise the described DC-DC converter of control and power to the low-voltage load of described vehicle.
13. methods according to any one of claim 8-10, also comprise:
That detects in the brake pedal position of the charge level of described high-tension battery, the temperature of described high-tension battery, the charge level of described A-battery, the running state of described alternating current generator, the state of described driving engine, ambient temperature, the speed of described vehicle, the accelerator pedal position of described vehicle, described vehicle is one or more, to obtain testing result; And
According to described testing result, control the Energy Transfer of described DC-DC converter between described alternating current generator and/or described A-battery and described high-tension battery and/or described electric transmission equipment.
14. methods according to any one of claim 8-10, also comprise:
That detects in the brake pedal position of the charge level of described high-tension battery, the temperature of described high-tension battery, the charge level of described A-battery, the running state of described alternating current generator, the state of described driving engine, ambient temperature, the speed of described vehicle, the accelerator pedal position of described vehicle, described vehicle is multiple, to obtain multiple testing result respectively;
The weight of pre-defined each testing result; And
According to described each testing result and respective weight, control the Energy Transfer of described DC-DC converter between described alternating current generator and/or described A-battery and described high-tension battery and/or described electric transmission equipment.
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