CN105226989A - The power electronics integrated system of new-energy automobile and method of work thereof - Google Patents
The power electronics integrated system of new-energy automobile and method of work thereof Download PDFInfo
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Abstract
This application discloses a kind of power electronics integrated system of new-energy automobile, comprise a three-winding high-frequency isolation transformer and four two-way changing levels.The two ends of the first winding connect the interchange end of the second two-way changing level; The DC terminal of the second two-way changing level connects the DC terminal of the first two-way changing level; The interchange end of the first two-way changing level exchanges interface as car diplomacy stream interface with Che Nei simultaneously.The two ends of the second winding connect the interchange end of the 3rd two-way changing level; The DC terminal of the 3rd two-way changing level is as car inner high voltage DC interface.The two ends of the tertiary winding connect the interchange end of the 4th two-way changing level; The DC terminal of the 4th two-way changing level is as low-voltage direct interface in car.On-board high-voltage battery charger, low pressure are assisted DC converter by the application, vehicle-mounted Alternating Current Power Supply device carries out the integrated of electric component, thus saves volume, reduce cost.
Description
Technical field
The application relates to a kind of power electronic system (PowerElectronicSystem) of new-energy automobile.
Background technology
Refer to Fig. 1, this is a kind of power electronic system of existing new-energy automobile (pure electric automobile, hybrid vehicle etc.), assists DC converter, the cascade of vehicle-mounted Alternating Current Power Supply device forms primarily of on-board high-voltage battery charger, low pressure.
Described on-board high-voltage battery charger is used for outer for car AC power (being generally 220V or 110V) to be transformed to car inner high voltage direct current (such as 216V, 240V, 264V, 288V, 312V, 336V, 360V, 384V, 600V etc.), thus be the high-tension battery charging of new-energy automobile, and be car inner high voltage system power supply.Refer to Fig. 2, this is the system construction drawing of traditional on-board high-voltage battery charger.Take high-frequency isolation transformer as boundary, left side electric component mainly comprises: car diplomacy stream interface, filter, AC/DC conversion stage, DC/AC conversion stage.Right side electric component mainly comprises: AC/DC conversion stage, car inner high voltage DC interface.Transformation and electrical isolation are carried out by high-frequency isolation transformer in left side and right side.
Described low pressure assists DC converter to be used for car inner high voltage direct current (coming from the output of on-board high-voltage battery charger or the output of high-tension battery) to be transformed to low-voltage direct in car (being generally 24V or 12V), thus be A-battery charging, and be that in car, low-pressure system is powered.Refer to Fig. 3, this is the system construction drawing that traditional low pressure assists DC converter.Take high-frequency isolation transformer as boundary, left side electric component mainly comprises: car inner high voltage DC interface, DC/AC conversion stage.Right side electric component mainly comprises: low-voltage direct interface in AC/DC conversion stage, car.Transformation and electrical isolation are carried out by high-frequency isolation transformer in left side and right side.
Described vehicle-mounted Alternating Current Power Supply device is used for low-voltage direct in car (come from low pressure and assist the output of DC converter or the output of A-battery) to be transformed in car to exchange (being generally 220V or 110V), thus is various electric equipment charging such as such as mobile phone, notebook computer, photography and vedio recording equipment, electric tool etc.Refer to Fig. 4, this is the system construction drawing of traditional vehicle-mounted Alternating Current Power Supply device.Take high-frequency isolation transformer as boundary, left side electric component mainly comprises: low-voltage direct interface, DC/AC conversion stage in car.Right side electric component mainly comprises: exchange interface in AC/DC conversion stage, DC/AC conversion stage, filter, car.Transformation and electrical isolation are carried out by high-frequency isolation transformer in left side and right side.
The power electronic system of above-mentioned new-energy automobile has following shortcoming:
One, formed by three kinds of stand-alone products (on-board high-voltage battery charger, low pressure assist DC converter, vehicle-mounted Alternating Current Power Supply device) simple cascade, do not consider the correlation between three kinds of stand-alone products, a lot of electric component repeats arrange and cause waste.
Its two, during power converter, the interchange of experience turns direct current, direct current is delivered and flow through many, reduces the efficiency of conversion.Particularly when car load external AC power supply, the Alternating Current Power Supply in car needs to convert through many times just can obtain.
Its three, vehicle-mounted Alternating Current Power Supply device is from low-pressure system power taking, therefore power is less.If power-on time is longer and low pressure assists DC converter to be not A-battery supplementary power in time, easily cause A-battery power shortage problem.
Summary of the invention
Technical problems to be solved in this application are to provide a kind of power electronics integrated system of new-energy automobile, on-board high-voltage battery charger, low pressure are assisted DC converter, vehicle-mounted Alternating Current Power Supply device three kinds of scripts independently product integrate, thus reduce the cost of new-energy automobile.For this reason, the application also will provide the method for work of the power electronics integrated system of described new-energy automobile.
For solving the problems of the technologies described above, the power electronics integrated system of the application's new-energy automobile comprises a three-winding high-frequency isolation transformer and four two-way changing levels; Described three-winding high-frequency isolation transformer has the first separate winding, the second winding, the tertiary winding; Mutually transformation and electrical isolation is carried out between described three windings; Each two-way changing level or carry out the conversion of AC-to DC, or carry out direct current to the conversion exchanged;
The two ends of described first winding connect the interchange end of the second two-way changing level; The DC terminal of the second two-way changing level connects the DC terminal of the first two-way changing level; The interchange end of the first two-way changing level exchanges interface as car diplomacy stream interface with Che Nei simultaneously;
The two ends of described second winding connect the interchange end of the 3rd two-way changing level; The DC terminal of the 3rd two-way changing level is as car inner high voltage DC interface;
The two ends of the described tertiary winding connect the interchange end of the 4th two-way changing level; The DC terminal of the 4th two-way changing level is as low-voltage direct interface in car.
The method of work of the power electronics integrated system of the application's new-energy automobile is:
When external AC power supply, described power electronics integrated system, using described AC power as the energy, exchanges any one or more outputs in interface in car inner high voltage DC interface, car in low-voltage direct interface, car;
When without external AC power supply, described power electronics integrated system, using the high-tension battery in car and/or A-battery as the energy, exchanges any one or more outputs in interface, car diplomacy stream interface in car inner high voltage DC interface, car in low-voltage direct interface, car.
Original three kinds of stand-alone products (on-board high-voltage battery charger, low pressure assist DC converter, vehicle-mounted Alternating Current Power Supply device) are carried out the integrated of electric component by the application, thus save volume, reduce cost.Also can carry out the integrated of mechanical part on this basis, thus reduce costs further.
Accompanying drawing explanation
Fig. 1 is the structural representation of the power electronic system of existing new-energy automobile;
Fig. 2 is the system configuration schematic diagram of existing on-board high-voltage battery charger;
Fig. 3 is the system configuration schematic diagram that existing low pressure assists DC converter;
Fig. 4 is the system configuration schematic diagram of existing vehicle-mounted Alternating Current Power Supply device;
Fig. 5 a, Fig. 5 b are the structural representation of two embodiments of the power electronics integrated system of the new-energy automobile of the application respectively;
Fig. 6 is a kind of circuit diagram of two-way changing level in the application;
Fig. 7 is a kind of circuit diagram of bidirectional filter in the application;
Fig. 8 is the output schematic diagram of power electronics integrated system described in the application when external AC power supply;
Fig. 9 is power electronics integrated system described in the application without external AC power supply and only by output schematic diagram during car inner high voltage powered battery;
Figure 10 is power electronics integrated system described in the application without external AC power supply and only by output schematic diagram when A-battery is powered in car;
Figure 11 is power electronics integrated system described in the application at the output schematic diagram without external AC power supply and when being powered by car inner high voltage battery and A-battery simultaneously.
Description of reference numerals in figure:
10 is three-winding high-frequency isolation transformer; 11 is the first winding; 12 is the second winding; 13 is the tertiary winding; 21 ~ 24 are two-way changing level; 30 is bidirectional filter.
Embodiment
Refer to Fig. 5 a, this is the embodiment one of the power electronics integrated system of the application's new-energy automobile.It comprises a three-winding high-frequency isolation transformer 10 and four two-way changing levels 21 ~ 24.Described three-winding high-frequency isolation transformer 10 has three independently windings, is the first winding 11, second winding 12, the tertiary winding 13 respectively.Three independent winding carry out transformation and electrical isolation mutually by same high-frequency isolation transformer 10.Each two-way changing level 21 ~ 24 all has to exchange holds and DC terminal, or carries out the conversion of AC-to DC, or carries out direct current to the conversion exchanged.
Wherein, the two ends of the first winding 11 connect the interchange end of the second two-way changing level 22.The DC terminal of the second two-way changing level 22 connects the DC terminal of the first two-way changing level 21.The interchange end of the first two-way changing level 21 exchanges interface as car diplomacy stream interface with Che Nei simultaneously.
Wherein, the two ends of the second winding 12 connect the interchange end of the 3rd two-way changing level 23.The DC terminal of the 3rd two-way changing level 23 is as car inner high voltage DC interface.
Wherein, the two ends of the tertiary winding 13 connect the interchange end of the 4th two-way changing level 24.The DC terminal of the 4th two-way changing level 24 is as low-voltage direct interface in car.
Refer to Fig. 5 b, this is the embodiment two of the power electronics integrated system of the application's new-energy automobile.Embodiment two increase only a bidirectional filter 30 on the basis of embodiment one.The interchange end of the first two-way changing level 21 connects one end of bidirectional filter 30.The other end of bidirectional filter 30 exchanges interface as car diplomacy stream interface with Che Nei simultaneously.Bidirectional filter 30 had both been used for preventing the high order harmonic component of the external electrical network of car diplomacy stream interface from entering the first two-way changing level 21, was used for again preventing the HF switch harmonic wave of the first two-way changing level 21 from entering the external electrical network of car diplomacy stream interface and affecting the power consumption equipment exchanging interface in car.
In above two embodiments, described two-way changing level 21 ~ 24 is electric power (Power) conversion stages, and its concrete hardware topology can be selected flexibly according to demand.Refer to Fig. 6, this is a kind of implementation of two-way changing level.DC terminal is connected to the two ends of DC capacitor Cdc, and the first MOS transistor M1 and the second MOS transistor M2 is connected in parallel on the two ends of DC capacitor Cdc after connecting, and the 3rd MOS transistor M3 and the 4th MOS transistor M4 is also connected in parallel on the two ends of DC capacitor Cdc after connecting.Draw respectively as exchanging end between first MOS transistor M1 and the second MOS transistor M2, between the 3rd MOS transistor M3 and the 4th MOS transistor M4.It should be noted that, described MOS transistor also can adopt other electronic power switch pipes such as IGBT to substitute.
In embodiment two, a kind of implementation of described bidirectional filter 30 as shown in Figure 7.Its one end connects high pressure ground by the first electric capacity C1, and the other end connects high pressure ground by the second electric capacity C2, is connected to inductance L between two ends.New-energy automobile has car inner high voltage system and Che Nei low-pressure system, and car inner high voltage system has high pressure ground, and in car, low-pressure system has low pressure ground.High pressure ground and low pressure ground can not altogether, and usual low pressure ground connects body shell, and high pressure ground is floating ground.
The power electronics integrated system of the application's new-energy automobile has carried out the reuse plan of a large amount of electric component:
One, from Fig. 2 ~ Fig. 4, existing on-board high-voltage battery charger, low pressure assist DC converter, vehicle-mounted Alternating Current Power Supply device all comprises a doublewound high-frequency isolation transformer.Because operating frequency can design closely, therefore can consider multiplexing.The application just have employed a three-winding high-frequency isolation transformer and instead of three doublewound high-frequency isolation transformer.
Its two, from Fig. 2, Fig. 3, right side electric component and the low pressure of existing on-board high-voltage battery charger assist the right side electric component of DC converter very similar.From Fig. 2, Fig. 4, the left side electric component of existing on-board high-voltage battery charger is very similar to the right side electric component of vehicle-mounted Alternating Current Power Supply device.From Fig. 3, Fig. 4, existing low pressure assists the right side electric component of DC converter very similar to the left side electric component of vehicle-mounted Alternating Current Power Supply device.These similar electric components have all been carried out reuse plan by the application, save volume, reduce cost.
The method of work of the power electronics integrated system of the application's new-energy automobile is divided into external AC power supply, without external AC power supply two kinds of situations.When external AC power supply, the car diplomacy stream interface of described power electronics integrated system connects described AC power and in this, as the energy, can exchange any one or more outputs of these three interfaces of interface in car inner high voltage DC interface, car in low-voltage direct interface, car.When without external AC power supply, described power electronics integrated system can using the high-tension battery in car and/or A-battery as the energy, exchange in low-voltage direct interface, car in car inner high voltage DC interface, car interface, these four interfaces of car diplomacy stream interface any one or more export.
Refer to Fig. 8, this be new-energy automobile when the occasion such as charging station, garage is charged by external AC power supply, the method for work of power electronics integrated system, specifically comprises:
---as only exported in car inner high voltage DC interface, then adopt scheme one.Scheme one is that control first winding 11 and the second winding 12 work simultaneously, external AC power supply energy acquired by car diplomacy stream interface is filtered out high order harmonic component (bidirectional filter 30 also can omit) by bidirectional filter 30, the first two-way changing level 21 carry out exchanging turn direct current, the second two-way changing level 22 carries out that direct current delivers stream, the second winding 12 carries out interchange turn direct current to the electromagnetic induction of the first winding 11, the 3rd two-way changing level 23, finally export in car inner high voltage DC interface.The car inner high voltage direct current exported for charging to the high-tension battery in car, and meets the need for electricity of car inner high voltage system.
---as only exported by low-voltage direct interface in car, then adopt scheme two.Scheme two is that control first winding 11 works with the tertiary winding 13 simultaneously, the energy of external AC power supply acquired by car diplomacy stream interface is filtered out high order harmonic component (bidirectional filter 30 also can omit) by bidirectional filter 30, the first two-way changing level 21 carry out exchanging turn direct current, the second two-way changing level 22 carries out that direct current delivers stream, the tertiary winding 13 carries out interchange and turns direct current the electromagnetic induction of the first winding 11, the 4th two-way changing level 24, finally low-voltage direct interface output in car.The low-voltage direct exported for charging to the A-battery in car, and meets the need for electricity of low-pressure system in car.
---export as interface only need be exchanged in car, then adopt scheme three.Scheme three directly draws electricity from car diplomacy stream interface to export in car and exchange interface.Exchange in the car exported for being the charging such as mobile phone, notebook computer in car.Common car diplomacy stream interface is 220V or 110V, then exchange the alternating current that interface exports identical voltage in car.Comparison diagram 1 and Fig. 8 can find, the application exchanges interface in car diplomacy stream interface to car again through any transformation of electrical energy, thus need not drastically increase conversion efficiency, and in car, the power output of Alternating Current Power Supply is unrestricted.In car, exchange the electric equipment that interface carries out charging just is designed to from commercial power charged originally, and therefore its charger has electrical isolation, and the application is therefore direct to draw electricity from car diplomacy stream interface exchange interface to car, and there is no need to do electrical isolation again.
---export as any number of of interface need be exchanged in low-voltage direct interface, car in car inner high voltage DC interface, car simultaneously, so described scheme one, scheme two, scheme three are superposed as required.
Preferably, when in car inner high voltage DC interface, car, low-voltage direct interface exports simultaneously, the low-voltage direct exported is high-tension battery servicing unit (such as high-tension battery cooling fan, battery management system low-tension supply etc.) etc. power supply, thus ensure that the high voltage direct current that exports is safety and the efficiency of high-tension battery charging process.
Refer to Fig. 9, this be new-energy automobile there is no external AC power supply and only using the high-tension battery in car as the energy time, the method for work of power electronics integrated system, specifically comprises:
---as only exported in car inner high voltage DC interface, then adopt scheme four.Scheme four directly exports from high-tension battery to car inner high voltage DC interface.
---as only exported (being such as that vehicle travels, the operating modes such as vehicle intersection wait) by low-voltage direct interface in car, then adopt scheme five.Scheme five is that control second winding 12 works with the tertiary winding 13 simultaneously, high-tension battery energy is undertaken by the 3rd two-way changing level 23 direct current delivers stream, the tertiary winding 13 carries out interchange turn direct current to the electromagnetic induction of the second winding 12, the 4th two-way changing level 24, finally in car, low-voltage direct interface exports.
---export as only interface need be exchanged at car diplomacy stream interface with Che Nei, then adopt scheme six.Scheme six is that control first winding 11 and the second winding 12 work simultaneously, by high-tension battery energy by the 3rd two-way changing level 23 carry out direct current deliver stream, the first winding 11 electromagnetic induction of the second winding 12, the second two-way changing level 22 exchanged turn direct current, the first two-way changing level 21 carries out the high order harmonic component (bidirectional filter 30 also can omit) that direct current delivers stream, the HF switch of bidirectional filter 30 filtering first two-way changing level 21 produces, and finally exchanges interface output at car diplomacy stream interface with Che Nei.Now, car diplomacy stream interface exports and is generally used for occasions such as charging to other new-energy automobile using new-energy automobile as portable power source and/or power to external communication power consumption equipment.
---export as any number of of interface need be exchanged in low-voltage direct interface, car diplomacy stream interface, car in car inner high voltage DC interface, car simultaneously, so described scheme four, scheme five, scheme six are superposed as required.
Refer to Figure 10, this be new-energy automobile there is no external AC power supply and only using the A-battery in car as the energy time, the method for work of power electronics integrated system, specifically comprises:
---as only exported by low-voltage direct interface in car, then adopt scheme seven.Scheme seven directly exports from A-battery to low-voltage direct interface in car.
---as only exported in Che Neigao DC interface (being such as the startup power-assisted scheme of hybrid vehicle at Cold Winter ato unit), then adopt scheme eight.Scheme eight is that control second winding 12 works with the tertiary winding 13 simultaneously, A-battery energy is undertaken by the 4th two-way changing level 24 direct current delivers stream, the electromagnetic induction of the second winding 12 pairs of tertiary windings 13, the 3rd two-way changing level 23 are carried out interchange and turned direct current, finally export in car inner high voltage DC interface.The car inner high voltage direct current exported produces extra voltage compensation, such as, can help power drive system ato unit.
---export as only interface need be exchanged at car diplomacy stream interface with Che Nei, then adopt scheme nine.Scheme nine is that control first winding 11 works with the tertiary winding 13 simultaneously, by the 4th two-way changing level 24, A-battery energy is undertaken that direct current delivers stream, the electromagnetic induction of the first winding 11 pairs of tertiary windings 13, the second two-way changing level 22 exchange turn direct current, the first two-way changing level 21 carries out the high order harmonic component (bidirectional filter 30 also can omit) that direct current delivers stream, the HF switch of bidirectional filter 30 filtering first two-way changing level 21 produces, and finally exchanges interface output at car diplomacy stream interface with Che Nei.Now, car diplomacy stream interface exports to be generally used for and the occasion such as to power with ato unit and/or to external communication power consumption equipment to other new-energy automobile pump electricity using new-energy automobile as portable power source.
---export as any number of of interface need be exchanged in low-voltage direct interface, car diplomacy stream interface, car in car inner high voltage DC interface, car simultaneously, so described scheme seven, scheme eight, scheme nine are superposed as required.
Refer to Figure 11, this be new-energy automobile there is no external AC power supply and simultaneously using the high-tension battery in car and A-battery as the energy time, the method for work of power electronics integrated system, specifically comprises:
---as only exported by low-voltage direct interface in car, then adopt scheme seven and/or scheme five.
---as only exported in car inner high voltage DC interface, then adopt scheme four and/or scheme eight.
---export as only interface need be exchanged at car diplomacy stream interface with Che Nei, then adopt scheme six and/or scheme nine.
---export as any number of of interface need be exchanged in low-voltage direct interface, car diplomacy stream interface, car in car inner high voltage DC interface, car simultaneously, so above-mentioned each scheme is superposed as required.
Usually, when vehicle external AC power supply, external AC power supply is adopted to power.Otherwise when vehicle travels, because low-pressure system in car needs constantly to mend electricity, therefore suggestion only adopts high-tension battery to power; When vehicle does not travel, A-battery can be adopted to power or adopt high-tension battery and A-battery to power simultaneously.
Because car diplomacy stream interface is interconnective with exchanging interface in car, or export simultaneously, or while do not export.Preferably can exchanging interface in car diplomacy stream interface, car and safety switch is set, closing output to avoid high voltage output to human injury for not using during this interface.
Complex chart 8 ~ Figure 11 is known, and the power electronics integrated system described in the application can realize the function of original three kinds of stand-alone products (on-board high-voltage battery charger, low pressure assist DC converter, vehicle-mounted Alternating Current Power Supply device) completely and control more flexible.Due to the multiplexing electric component with incorporating these three kinds script stand-alone products, add three kinds of products integrated after can multiplexing mechanical part such as such as machinery cooling, mechanical cover, high-voltage connector, high-voltage wiring harness, low-voltage signal interface etc., therefore cost is further reduced, there is good using value.
These are only the preferred embodiment of the application, and be not used in restriction the application.For a person skilled in the art, the application can have various modifications and variations.Within all spirit in the application and principle, any amendment done, equivalent replacement, improvement etc., within the protection range that all should be included in the application.
Claims (10)
1. a power electronics integrated system for new-energy automobile, is characterized in that, comprises a three-winding high-frequency isolation transformer and four two-way changing levels; Described three-winding high-frequency isolation transformer has the first separate winding, the second winding, the tertiary winding; Mutually transformation and electrical isolation is carried out between described three windings; Each two-way changing level or carry out the conversion of AC-to DC, or carry out direct current to the conversion exchanged;
The two ends of described first winding connect the interchange end of the second two-way changing level; The DC terminal of the second two-way changing level connects the DC terminal of the first two-way changing level; The interchange end of the first two-way changing level exchanges interface as car diplomacy stream interface with Che Nei simultaneously;
The two ends of described second winding connect the interchange end of the 3rd two-way changing level; The DC terminal of the 3rd two-way changing level is as car inner high voltage DC interface;
The two ends of the described tertiary winding connect the interchange end of the 4th two-way changing level; The DC terminal of the 4th two-way changing level is as low-voltage direct interface in car.
2. the power electronics integrated system of new-energy automobile according to claim 1, is characterized in that, also comprises a bidirectional filter; The interchange end of described first two-way changing level connects one end of bidirectional filter, and the other end of bidirectional filter exchanges interface as car diplomacy stream interface with Che Nei simultaneously.
3. the power electronics integrated system of new-energy automobile according to claim 1, is characterized in that, described two-way changing level comprises DC terminal and exchanges end; DC terminal is connected to the two ends of DC capacitor, and the first MOS transistor and the second MOS transistor are connected in parallel on the two ends of DC capacitor after connecting, and the 3rd MOS transistor and the 4th MOS transistor are also connected in parallel on the two ends of DC capacitor after connecting; Draw respectively between first MOS transistor and the second MOS transistor, between the 3rd MOS transistor and the 4th MOS transistor as exchanging end;
Or MOS transistor replaces with IGBT device.
4. the power electronics integrated system of new-energy automobile according to claim 2, is characterized in that, one end of described bidirectional filter connects high pressure ground by the first electric capacity, and the other end connects high pressure ground by the second electric capacity, is connected to inductance between two ends.
5. a method of work for the power electronics integrated system of new-energy automobile, is characterized in that,
When external AC power supply, described power electronics integrated system, using described AC power as the energy, exchanges any one or more outputs in interface in car inner high voltage DC interface, car in low-voltage direct interface, car;
When without external AC power supply, described power electronics integrated system, using the high-tension battery in car and/or A-battery as the energy, exchanges any one or more outputs in interface, car diplomacy stream interface in car inner high voltage DC interface, car in low-voltage direct interface, car.
6. the method for work of the power electronics integrated system of new-energy automobile according to claim 5, is characterized in that, when external AC power supply, as only exported in car inner high voltage DC interface, then adopts scheme one; Scheme one is that control first winding and the second winding work simultaneously, external AC power supply energy is undertaken exchanging by the first two-way changing level turn direct current, the second two-way changing level carries out that direct current delivers stream, the second winding carries out interchange turn direct current to the electromagnetic induction of the first winding, the 3rd two-way changing level, finally export in car inner high voltage DC interface;
When external AC power supply, as only exported by low-voltage direct interface in car, then adopt scheme two; Scheme two is that control first winding and the tertiary winding work simultaneously, the energy of external AC power supply is undertaken exchanging by the first two-way changing level turn direct current, the second two-way changing level carries out that direct current delivers stream, the tertiary winding carries out interchange turn direct current to the electromagnetic induction of the first winding, the 4th two-way changing level, finally in car, low-voltage direct interface exports;
When external AC power supply, export as interface only need be exchanged in car, then adopt scheme three; Scheme three directly draws electricity from car diplomacy stream interface to export in car and exchange interface;
When external AC power supply, export as any number of of interface need be exchanged in low-voltage direct interface, car in car inner high voltage DC interface, car simultaneously, so described scheme one, scheme two, scheme three are superposed.
7. the method for work of the power electronics integrated system of new-energy automobile according to claim 5, is characterized in that,
When without external AC power supply and only using the high-tension battery in car as the energy, as only exported in car inner high voltage DC interface, then adopt scheme four; Scheme four directly exports from high-tension battery to car inner high voltage DC interface;
When without external AC power supply and only using the high-tension battery in car as the energy, as only exported by low-voltage direct interface in car, then adopt scheme five; Scheme five is that control second winding and the tertiary winding work simultaneously, high-tension battery energy is undertaken by the 3rd two-way changing level direct current delivers stream, the tertiary winding carries out interchange turn direct current to the electromagnetic induction of the second winding, the 4th two-way changing level, finally in car, low-voltage direct interface exports;
When without external AC power supply and only using the high-tension battery in car as the energy, export as only interface need be exchanged at car diplomacy stream interface with Che Nei, then adopt scheme six; Scheme six is that control first winding and the second winding work simultaneously, high-tension battery energy is carried out direct current by the 3rd two-way changing level deliver stream, the first winding and the electromagnetic induction of the second winding, the second two-way changing level carried out to interchange turns direct current, the first two-way changing level is carried out direct current and delivered stream, finally exchanges interface output at car diplomacy stream interface with Che Nei;
When without external AC power supply and only using the high-tension battery in car as the energy, export as any number of of interface need be exchanged in low-voltage direct interface, car diplomacy stream interface, car in car inner high voltage DC interface, car simultaneously, so described scheme four, scheme five, scheme six are superposed.
8. the method for work of the power electronics integrated system of new-energy automobile according to claim 5, it is characterized in that: when without external AC power supply and only using the A-battery in car as the energy, as only exported by low-voltage direct interface in car, then adopt scheme seven; Scheme seven directly exports from A-battery to low-voltage direct interface in car;
When without external AC power supply and only using the A-battery in car as the energy, as only exported in Che Neigao DC interface, then adopt scheme eight; Scheme eight is that control second winding and the tertiary winding work simultaneously, A-battery energy is undertaken by the 4th two-way changing level direct current delivers stream, the second winding carries out interchange turn direct current to the electromagnetic induction of the tertiary winding, the 3rd two-way changing level, finally export in car inner high voltage DC interface;
When without external AC power supply and only using the A-battery in car as the energy, export as only interface need be exchanged at car diplomacy stream interface with Che Nei, then adopt scheme nine; Scheme nine is that control first winding and the tertiary winding work simultaneously, A-battery energy is carried out direct current by the 4th two-way changing level deliver stream, the first winding and the electromagnetic induction of the tertiary winding, the second two-way changing level carried out to interchange turns direct current, the first two-way changing level is carried out direct current and delivered stream, finally exchanges interface output at car diplomacy stream interface with Che Nei;
When without external AC power supply and only using the A-battery in car as the energy, export as any number of of interface need be exchanged in low-voltage direct interface, car diplomacy stream interface, car in car inner high voltage DC interface, car simultaneously, so described scheme seven, scheme eight, scheme nine are superposed.
9. the method for work of the power electronics integrated system of the new-energy automobile according to claim 7 or 8, it is characterized in that: when without external AC power supply and simultaneously using the high-tension battery in car and A-battery as the energy, as only exported by low-voltage direct interface in car, then adopt scheme seven and/or scheme five;
When without external AC power supply and simultaneously using the high-tension battery in car and A-battery as the energy, as only exported in car inner high voltage DC interface, then employing scheme four and/or scheme eight;
When without external AC power supply and simultaneously using the high-tension battery in car and A-battery as the energy, export as only exchanged interface at car diplomacy stream interface with Che Nei, then employing scheme six and/or scheme nine;
When without external AC power supply and simultaneously using the high-tension battery in car and A-battery as the energy, export, so by above-mentioned each scheme superposition as any number of of interface need be exchanged in low-voltage direct interface, car diplomacy stream interface, car in car inner high voltage DC interface, car simultaneously.
10. the method for work of the power electronics integrated system of new-energy automobile according to claim 5, is characterized in that: when without external AC power supply, then only adopts high-tension battery to power when vehicle travels; When vehicle does not travel, only adopt A-battery to power or adopt high-tension battery and A-battery to power simultaneously.
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| CN201410299039.8A Pending CN105226989A (en) | 2014-06-27 | 2014-06-27 | The power electronics integrated system of new-energy automobile and method of work thereof |
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| CN110014977A (en) * | 2017-08-15 | 2019-07-16 | 比亚迪股份有限公司 | The on-board charging system and its control method of vehicle and vehicle |
| CN107901774A (en) * | 2017-10-31 | 2018-04-13 | 北京新能源汽车股份有限公司 | A kind of charge/discharge control method of vehicle, device, system and automobile |
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