CN107627881B - Charge-discharge and motor drive integrated device of electric automobile - Google Patents

Charge-discharge and motor drive integrated device of electric automobile Download PDF

Info

Publication number
CN107627881B
CN107627881B CN201710839409.6A CN201710839409A CN107627881B CN 107627881 B CN107627881 B CN 107627881B CN 201710839409 A CN201710839409 A CN 201710839409A CN 107627881 B CN107627881 B CN 107627881B
Authority
CN
China
Prior art keywords
switching tube
switch
converter
capacitor
common node
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201710839409.6A
Other languages
Chinese (zh)
Other versions
CN107627881A (en
Inventor
杨峰
宋永端
李�瑞
李玉良
石亚锋
王大松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Electronic Science and Technology of China
Original Assignee
University of Electronic Science and Technology of China
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by University of Electronic Science and Technology of China filed Critical University of Electronic Science and Technology of China
Priority to CN201710839409.6A priority Critical patent/CN107627881B/en
Publication of CN107627881A publication Critical patent/CN107627881A/en
Application granted granted Critical
Publication of CN107627881B publication Critical patent/CN107627881B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • 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
    • Y02T10/64—Electric machine technologies in electromobility
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries
    • 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
    • Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
    • 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
    • Y02T10/72—Electric energy management in electromobility
    • 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
    • Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02T90/10—Technologies relating to charging of electric vehicles
    • Y02T90/14—Plug-in electric vehicles

Abstract

The invention discloses charging and discharging and motor driving integrated equipment of an electric automobile, which comprises a three-phase bridge type bidirectional DC/AC converter, an isolated three-port DC/DC converter, a main controller, an integrated machine working mode switching device, a single-phase alternating current power supply input interface device and a single-phase alternating current output interface. The invention carries out topology reconstruction on a three-phase inverter for driving a motor in the electric automobile traction system, thereby utilizing a single-phase rectifier during charging or a single-phase inverter during externally supplying power to form an integrated hardware circuit structure. And then, the three-phase bridge type bidirectional DC/AC converter, the isolated three-port DC/DC converter, the relay switch and the corresponding driving module are controlled and converted in the main controller according to an integrated control method, so that the seamless switching between the charging and discharging and driving modes is realized, and the functions of recovering the braking energy, namely V2V/V2L, and charging the vehicle-mounted low-voltage storage battery are realized. The integrated equipment achieves the purposes of optimizing the volume, reducing the weight, saving the cost and improving the reliability.

Description

Charge-discharge and motor drive integrated device of electric automobile
Technical Field
The invention relates to the field of electric automobiles, in particular to the fields of charging and discharging of power batteries and low-voltage storage batteries of electric automobiles and motor driving.
Background
With the rapid development of the automobile industry, the problems of gradual depletion of petroleum resources and environmental pollution become more serious, the demand for sustainable energy development becomes stronger, energy conservation and environmental protection become important subjects in the 21 st century, and the electric automobile technology also comes into play. The electric automobile realizes zero emission by replacing oil with electricity, has the characteristics of simple structure, high energy utilization efficiency, low noise and low use cost, and has become the development trend of the automobile industry all over the world. Because the integration of information and control is more conveniently realized by using the motor drive, and the innovation of the charge and discharge technology is related to the effective utilization of electric energy and the quality of user experience, the advanced motor drive and charge and discharge technology becomes the core content of the research of the electric automobile.
At present, a motor driver, a vehicle-mounted power battery charger and a low-voltage storage battery charger of a mass-produced electric automobile are usually designed into separate devices, so that the vehicle-mounted space is wasted, and the automobile cost is increased. Meanwhile, most of the functions of V2V (Vehicle to Vehicle) and V2L (Vehicle to Load) are not supported, and better convenience use experience cannot be provided for users. Therefore, the invention reuses the topological structure of the related power circuit on the basis of the traditional motor driver and the vehicle-mounted charger, improves the original separated motor driver, the vehicle-mounted charger and the low-voltage storage battery charger into an integrated machine which simultaneously supports the driving and charging and discharging functions, and designs the isolated three-port DC/DC converter into the integrated machine, thereby being beneficial to the conversion of multiple power supplies. The invention can reduce the number of key power devices in the original system, and achieve the purposes of optimizing the volume, reducing the weight, saving the cost and improving the reliability. And simultaneously, the function of V2V/V2L is additionally provided, so that the use convenience experience of a user is improved.
The patent of 'motor controller integrated with driving and charging and discharging functions' with application number 201310741241.7 discloses a motor controller integrated with driving and charging and discharging functions, wherein a power battery, a bidirectional DC/DC converter, a three-phase bridge type bidirectional DC/AC converter and a motor form a motor driving loop, and an alternating current power supply, the three-phase bridge type bidirectional DC/AC converter, the bidirectional DC/DC converter and the power battery form a charging loop. The device has the following defects:
1. the driving motor loop has a complex structure and high cost. The motor drive includes a DC/DC converter module, making the structure complicated. Meanwhile, as the motor drive needs larger power, the DC/DC converter module needs to have larger power output capability, and the corresponding cost can be increased;
2. there is no energy recovery at braking. Most of the existing electric automobiles have energy recovery during braking, so that the cruising mileage of the electric automobiles can be improved, and energy is saved, so that a controller without the energy recovery can limit the cruising capacity of the electric automobiles to a certain extent;
3. no interface device for outputting single-phase ac power is provided. The power supply cannot be carried out on other electric automobiles and some mobile electric appliances, and the functions of V2L and V2V cannot be provided;
4. the charging function of the vehicle-mounted low-voltage storage battery is not integrated. Electronic equipment such as an air conditioner and a sound box in the electric automobile is basically powered by the low-voltage storage battery, and the cost can be further reduced by integrating the charging function of the vehicle-mounted low-voltage storage battery.
Disclosure of Invention
The invention aims to design a novel electric vehicle charging and discharging and motor driving integrated device aiming at the defects of the existing electric vehicle driving and charging technology, and realizes the functions of motor driving, power battery charging and discharging, braking energy recovery, V2L/V2V output and vehicle-mounted low-voltage storage battery charging. Therefore, the manufacturing cost of the electric control and charging part of the electric automobile is reduced, and the running efficiency and the system reliability of the whole automobile are improved.
The purpose of the invention is realized by the following technical scheme: the utility model provides a charge-discharge and motor drive integrated device of electric automobile, the device includes: the system comprises a three-phase bridge type bidirectional DC/AC converter, an isolated three-port DC/DC converter, a main controller, a single-phase alternating current power supply input interface, a single-phase alternating current output interface, a vehicle-mounted low-voltage storage battery, a power battery pack, a first relay switch, a second relay switch, a third relay switch and a motor; the power battery pack, the first relay switch, the three-phase bridge type bidirectional DC/AC converter and the motor are sequentially connected to form a motor driving loop; the single-phase alternating-current power supply input interface, the three-phase bridge type bidirectional DC/AC converter, the isolated three-port DC/DC converter, the second relay switch and the power battery pack are sequentially connected to form a battery charging loop; the motor, the three-phase bridge type bidirectional DC/AC converter, the isolated three-port DC/DC converter, the second relay switch and the power battery pack are sequentially connected to form a braking energy recovery loop; the power battery pack, the first relay switch, the three-phase bridge type bidirectional DC/AC converter and the single-phase alternating current output interface are sequentially connected to form an electric energy output loop; the power battery pack, the second relay switch, the isolated three-port DC/DC converter, the third relay switch and the vehicle-mounted low-voltage storage battery are sequentially connected to form a power battery to charge the vehicle-mounted low-voltage storage battery; during parking charging, when the power battery is fully charged, the vehicle-mounted low-voltage storage battery can be charged by electric energy provided by the single-phase alternating-current power supply input interface, namely the single-phase alternating-current power supply input interface, the three-phase bridge type bidirectional DC/AC converter, the isolated three-port DC/DC converter, the third relay switch and the vehicle-mounted low-voltage storage battery are sequentially connected to form a loop for charging the vehicle-mounted low-voltage storage battery by an external power supply.
The circuit structure of the charging, discharging and motor driving integrated device of the electric automobile comprises a charging interface, an output interface, a three-phase motor, a bidirectional DC/AC converter circuit, an isolated three-port DC/DC converter, a power battery pack and a vehicle-mounted low-voltage storage battery; the bidirectional DC/AC converter circuit comprises first to sixth switching tubes, wherein the first switching tube (T1) is connected with the second switching tube (T2) in series, the third switching tube (T3) is connected with the fourth switching tube (T4) in series, the fifth switching tube (T5) is connected with the sixth switching tube (T6) in series, the three series branches are connected in parallel, the first switching tube, the third switching tube and the fifth switching tube share a parallel node, and the second switching tube, the fourth switching tube and the sixth switching tube share a parallel node;
a single electrode of the three-phase motor is respectively connected with a common node of the first switching tube and the second switching tube, a common node of the third switching tube and the fourth switching tube, and a common node of the fifth switching tube and the sixth switching tube, and a ninth switch (K9) and a tenth switch (K10) are arranged in front of the two electrodes; one electrode of the output interface is connected with the common node of the fifth switching tube and the sixth switching tube through an inductor L3, and the other electrode of the output interface is connected with the common node of the third switching tube and the fourth switching tube;
the isolated three-port DC/DC converter includes: the device comprises a preposed conversion circuit, a power battery pack conversion circuit and a vehicle-mounted low-voltage storage battery conversion circuit;
wherein the pre-conversion circuit comprises: a capacitor C1, seventh to tenth switching tubes, third to fourth switches and a winding a; the seventh switch tube and the eighth switch tube are connected in series, the ninth switch tube and the tenth switch tube are connected in series, the two series branches are connected with a capacitor C1 in parallel, the seventh switch tube, the ninth switch tube and the capacitor C1 share a parallel node, and the eighth switch tube, the tenth switch tube and the capacitor C1 share a parallel node; the common node of the first switching tube and the common node of the third switching tube in the bidirectional DC/AC converter circuit are connected with the common node of the seventh switching tube and the ninth switching tube in the pre-conversion circuit, and the common node of the second switching tube and the fourth switching tube in the bidirectional DC/AC converter circuit is connected with the common node of the eighth switching tube and the tenth switching tube in the pre-conversion circuit; two ends of the winding a are respectively connected with a common node of the seventh switching tube and the eighth switching tube and a common node of the ninth switching tube and the tenth switching tube through a third switch (K3) and a fourth switch (K4);
the power battery pack converting circuit comprises: eleventh to fourteenth switch tubes, a capacitor C2, fifth to sixth switches, and a winding b, wherein the eleventh and twelfth switch tubes are connected in series, the thirteenth and fourteenth switch tubes are connected in series, and the two series branches are connected in parallel with a capacitor C2, the eleventh and thirteenth switch tubes and the capacitor C2 share a parallel node, and the twelfth and fourteenth switch tubes and the capacitor C2 share a parallel node; two ends of the winding b are respectively connected with the common node of the eleventh switching tube and the common node of the thirteenth switching tube and the fourteenth switching tube through a fifth switch (K5) and a sixth switch (K6); a common node of the capacitor C2 and the eleventh switching tube is connected with a common node of the capacitor C1 and the first switching tube through a switch K1, and a common node of the capacitor C2 and the twelfth switching tube is connected with a common node of the capacitor C1 and the second switching tube through a switch K2;
two poles of the power battery pack are connected with a capacitor C2 in parallel;
the vehicle-mounted low-voltage storage battery conversion circuit comprises: fifteenth to eighteenth switching tubes, a capacitor C3, seventh to eighth switches and a winding C, wherein the fifteenth and sixteenth switching tubes are connected in series, the seventeenth and eighteenth switching tubes are connected in series, the two series branches are connected in parallel with a capacitor C3, the fifteenth and seventeenth switching tubes and the capacitor C3 share a parallel node, and the sixteenth and eighteenth switching tubes and the capacitor C3 share a parallel node; two ends of the winding c are respectively connected with the common node of the fifteenth switching tube and the common node of the seventeenth switching tube and the eighteenth switching tube through a seventh switch (K7) and an eighth switch (K8);
the two poles of the vehicle-mounted low-voltage storage battery are connected with a capacitor C3 in parallel;
and a winding a in the preposed conversion circuit is respectively coupled and connected with a winding b in the power battery pack conversion circuit and a winding c in the vehicle-mounted low-voltage storage battery conversion circuit.
The invention is characterized in that: and carrying out topology reconstruction on a three-phase inverter for driving a motor in the traction system, so that an integrated hardware circuit structure is formed by utilizing a single-phase rectifier during charging or a single-phase inverter during external power supply. And the main controller carries out control conversion on the three-phase bridge type bidirectional DC/AC converter, the isolated three-port DC/DC converter, the relay switch and the corresponding driving module according to an integrated control method, so that seamless switching of charging, discharging and driving modes is realized. The 220V loop is provided for directly charging the vehicle-mounted low-voltage storage battery, so that the effective energy of the power battery can be improved, and the discharge frequency of the power battery can be reduced. The brake energy recovery and the V2V/V2L function are realized, and the working efficiency and the practicability of the whole vehicle system are improved.
Drawings
FIG. 1 is a constitutional structural view of the present invention.
Fig. 2 is an overall circuit topology of the present invention.
Fig. 3 is a topology diagram of a motor driving circuit in the present invention.
Fig. 4 is a circuit topology diagram of a single-phase charging mode in the present invention.
FIG. 5 is a braking energy recovery circuit topology of the present invention.
Fig. 6 is a circuit topology diagram of the invention when the power battery is used for charging the vehicle-mounted low-voltage storage battery.
Fig. 7 is a circuit topology diagram of the invention when an external power source charges the vehicle-mounted low-voltage battery.
FIG. 8 is a topological diagram of the discharge circuit of V2L/V2V in the present invention.
Detailed Description
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It is to be noted that identical components appear in different figures, which are assigned the same reference numerals.
The bidirectional DC/AC converter adopts an FS820R08A6P2B IPM module for a three-phase converter, and the corresponding drive and BOOSTER adopt 1EDI2002AS and 1EBN1001AE chips; the isolated three-port DC/DC converter adopts an IPP65R150CFDA IGBT, and a 2ED020I12FA chip is adopted for corresponding driving; the main controller adopts an AURIX TC277 chip, can detect voltage, current and temperature parameters after expansion, and responds to the input of an accelerator pedal and the input of braking force.
The circuit structure of the charging, discharging and motor driving integrated device of the electric automobile comprises a charging interface, an output interface, a three-phase motor, a bidirectional DC/AC converter circuit, an isolated three-port DC/DC converter, a power battery pack and a vehicle-mounted low-voltage storage battery; the bidirectional DC/AC converter circuit comprises first to sixth switching tubes, wherein the first switching tube T1 is connected with the second switching tube T2 in series, the third switching tube T3 is connected with the fourth switching tube T4 in series, the fifth switching tube T5 is connected with the sixth switching tube T6 in series, the three series-connected branches are connected in parallel, the first switching tube, the third switching tube and the fifth switching tube share a parallel node, and the second switching tube, the fourth switching tube and the sixth switching tube share a parallel node;
a single electrode of the three-phase motor is respectively connected with a common node of the first switching tube and the second switching tube, a common node of the third switching tube and the fourth switching tube, a common node of the fifth switching tube and the sixth switching tube, and a ninth switch K9 and a tenth switch K10 are arranged in front of the two electrodes; one electrode of the output interface is connected with the common node of the fifth switching tube and the sixth switching tube through an inductor L3, and the other electrode of the output interface is connected with the common node of the third switching tube and the fourth switching tube;
the isolated three-port DC/DC converter includes: the device comprises a preposed conversion circuit, a power battery pack conversion circuit and a vehicle-mounted low-voltage storage battery conversion circuit;
wherein the pre-conversion circuit comprises: a capacitor C1, seventh to tenth switching tubes, third to fourth switches and a winding a; the seventh switch tube and the eighth switch tube are connected in series, the ninth switch tube and the tenth switch tube are connected in series, the two series branches are connected with a capacitor C1 in parallel, the seventh switch tube, the ninth switch tube and the capacitor C1 share a parallel node, and the eighth switch tube, the tenth switch tube and the capacitor C1 share a parallel node; the common node of the first switching tube and the common node of the third switching tube in the bidirectional DC/AC converter circuit are connected with the common node of the seventh switching tube and the ninth switching tube in the pre-conversion circuit, and the common node of the second switching tube and the fourth switching tube in the bidirectional DC/AC converter circuit is connected with the common node of the eighth switching tube and the tenth switching tube in the pre-conversion circuit; two ends of the winding a are respectively connected with a common node of the seventh switching tube and the eighth switching tube and a common node of the ninth switching tube and the tenth switching tube through a third switch K3 and a fourth switch K4;
the power battery pack converting circuit comprises: eleventh to fourteenth switch tubes, a capacitor C2, fifth to sixth switches, and a winding b, wherein the eleventh and twelfth switch tubes are connected in series, the thirteenth and fourteenth switch tubes are connected in series, and the two series branches are connected in parallel with a capacitor C2, the eleventh and thirteenth switch tubes and the capacitor C2 share a parallel node, and the twelfth and fourteenth switch tubes and the capacitor C2 share a parallel node; two ends of the winding b are respectively connected with the common node of the eleventh switching tube and the common node of the thirteenth switching tube and the common node of the fourteenth switching tube through a fifth switch K5 and a sixth switch K6; a common node of the capacitor C2 and the eleventh switching tube is connected with a common node of the capacitor C1 and the first switching tube through a switch K1, and a common node of the capacitor C2 and the twelfth switching tube is connected with a common node of the capacitor C1 and the second switching tube through a switch K2;
two poles of the power battery pack are connected with a capacitor C2 in parallel;
the vehicle-mounted low-voltage storage battery conversion circuit comprises: fifteenth to eighteenth switching tubes, a capacitor C3, seventh to eighth switches and a winding C, wherein the fifteenth and sixteenth switching tubes are connected in series, the seventeenth and eighteenth switching tubes are connected in series, the two series branches are connected in parallel with a capacitor C3, the fifteenth and seventeenth switching tubes and the capacitor C3 share a parallel node, and the sixteenth and eighteenth switching tubes and the capacitor C3 share a parallel node; two ends of the winding c are respectively connected with the common node of the fifteenth switching tube and the common node of the seventeenth switching tube and the eighteenth switching tube through a seventh switch K7 and an eighth switch K8;
the two poles of the vehicle-mounted low-voltage storage battery are connected with a capacitor C3 in parallel;
and a winding a in the preposed conversion circuit is respectively coupled and connected with a winding b in the power battery pack conversion circuit and a winding c in the vehicle-mounted low-voltage storage battery conversion circuit.

Claims (1)

1. The utility model provides a charge-discharge and motor drive integrated device of electric automobile, the device includes: the system comprises a three-phase bridge type bidirectional DC/AC converter, an isolated three-port DC/DC converter, a main controller, an all-in-one machine working mode switching device, a single-phase alternating current power supply input interface, a single-phase alternating current output interface, a vehicle-mounted low-voltage storage battery, a power battery pack, a first relay switch, a second relay switch, a third relay switch and a motor; the power battery pack, the first relay switch, the three-phase bridge type bidirectional DC/AC converter and the motor are sequentially connected to form a motor driving loop; the single-phase alternating-current power supply input interface, the three-phase bridge type bidirectional DC/AC converter, the isolated three-port DC/DC converter, the second relay switch and the power battery pack are sequentially connected to form a battery charging loop; the motor, the three-phase bridge type bidirectional DC/AC converter, the isolated three-port DC/DC converter, the second relay switch and the power battery pack are sequentially connected to form a braking energy recovery loop; the power battery pack, the first relay switch, the three-phase bridge type bidirectional DC/AC converter and the single-phase alternating current output interface are sequentially connected to form an electric energy output loop; the power battery pack, the second relay switch, the isolated three-port DC/DC converter, the third relay switch and the vehicle-mounted low-voltage storage battery are sequentially connected to form a power battery to charge the vehicle-mounted low-voltage storage battery; during parking charging, when the power battery is fully charged, the vehicle-mounted low-voltage storage battery can be charged by electric energy provided by the single-phase alternating-current power supply input interface, namely the single-phase alternating-current power supply input interface, the three-phase bridge type bidirectional DC/AC converter, the isolated three-port DC/DC converter, the third relay switch and the vehicle-mounted low-voltage storage battery are sequentially connected to form a loop for charging the vehicle-mounted low-voltage storage battery by an external power supply;
a circuit that is used for electric automobile's charge-discharge and motor drive integrated device, this circuit structure includes: the system comprises a charging interface, an output interface, a three-phase motor, a bidirectional DC/AC converter circuit, an isolated three-port DC/DC converter, a power battery pack and a vehicle-mounted low-voltage storage battery; the bidirectional DC/AC converter circuit comprises first to sixth switching tubes, wherein the first switching tube (T1) is connected with the second switching tube (T2) in series, the third switching tube (T3) is connected with the fourth switching tube (T4) in series, the fifth switching tube (T5) is connected with the sixth switching tube (T6) in series, the three series branches are connected in parallel, the first switching tube, the third switching tube and the fifth switching tube share a parallel node, and the second switching tube, the fourth switching tube and the sixth switching tube share a parallel node;
a single electrode of the three-phase motor is respectively connected with a common node of the first switching tube and the second switching tube, a common node of the third switching tube and the fourth switching tube, and a common node of the fifth switching tube and the sixth switching tube, and a ninth switch (K9) and a tenth switch (K10) are arranged in front of the two electrodes; one electrode of the output interface is connected with the common node of the fifth switching tube and the sixth switching tube through an inductor L3, and the other electrode of the output interface is connected with the common node of the third switching tube and the fourth switching tube;
the isolated three-port DC/DC converter includes: the device comprises a preposed conversion circuit, a power battery pack conversion circuit and a vehicle-mounted low-voltage storage battery conversion circuit;
wherein the pre-conversion circuit comprises: a capacitor C1, seventh to tenth switching tubes, third to fourth switches and a winding a; the seventh switch tube and the eighth switch tube are connected in series, the ninth switch tube and the tenth switch tube are connected in series, the two series branches are connected with a capacitor C1 in parallel, the seventh switch tube, the ninth switch tube and the capacitor C1 share a parallel node, and the eighth switch tube, the tenth switch tube and the capacitor C1 share a parallel node; the common node of the first switching tube and the common node of the third switching tube in the bidirectional DC/AC converter circuit are connected with the common node of the seventh switching tube and the ninth switching tube in the pre-conversion circuit, and the common node of the second switching tube and the fourth switching tube in the bidirectional DC/AC converter circuit is connected with the common node of the eighth switching tube and the tenth switching tube in the pre-conversion circuit; two ends of the winding a are respectively connected with a common node of the seventh switching tube and the eighth switching tube and a common node of the ninth switching tube and the tenth switching tube through a third switch (K3) and a fourth switch (K4);
the power battery pack converting circuit comprises: eleventh to fourteenth switch tubes, a capacitor C2, fifth to sixth switches, and a winding b, wherein the eleventh and twelfth switch tubes are connected in series, the thirteenth and fourteenth switch tubes are connected in series, and the two series branches are connected in parallel with a capacitor C2, the eleventh and thirteenth switch tubes and the capacitor C2 share a parallel node, and the twelfth and fourteenth switch tubes and the capacitor C2 share a parallel node; two ends of the winding b are respectively connected with the common node of the eleventh switching tube and the common node of the thirteenth switching tube and the fourteenth switching tube through a fifth switch (K5) and a sixth switch (K6); a common node of the capacitor C2 and the eleventh switching tube is connected with a common node of the capacitor C1 and the first switching tube through a switch K1, and a common node of the capacitor C2 and the twelfth switching tube is connected with a common node of the capacitor C1 and the second switching tube through a switch K2;
two poles of the power battery pack are connected with a capacitor C2 in parallel;
the vehicle-mounted low-voltage storage battery conversion circuit comprises: fifteenth to eighteenth switching tubes, a capacitor C3, seventh to eighth switches and a winding C, wherein the fifteenth and sixteenth switching tubes are connected in series, the seventeenth and eighteenth switching tubes are connected in series, the two series branches are connected in parallel with a capacitor C3, the fifteenth and seventeenth switching tubes and the capacitor C3 share a parallel node, and the sixteenth and eighteenth switching tubes and the capacitor C3 share a parallel node; two ends of the winding c are respectively connected with the common node of the fifteenth switching tube and the common node of the seventeenth switching tube and the eighteenth switching tube through a seventh switch (K7) and an eighth switch (K8);
the two poles of the vehicle-mounted low-voltage storage battery are connected with a capacitor C3 in parallel;
and a winding a in the preposed conversion circuit is respectively coupled and connected with a winding b in the power battery pack conversion circuit and a winding c in the vehicle-mounted low-voltage storage battery conversion circuit.
CN201710839409.6A 2017-09-18 2017-09-18 Charge-discharge and motor drive integrated device of electric automobile Active CN107627881B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710839409.6A CN107627881B (en) 2017-09-18 2017-09-18 Charge-discharge and motor drive integrated device of electric automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710839409.6A CN107627881B (en) 2017-09-18 2017-09-18 Charge-discharge and motor drive integrated device of electric automobile

Publications (2)

Publication Number Publication Date
CN107627881A CN107627881A (en) 2018-01-26
CN107627881B true CN107627881B (en) 2020-11-17

Family

ID=61101791

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710839409.6A Active CN107627881B (en) 2017-09-18 2017-09-18 Charge-discharge and motor drive integrated device of electric automobile

Country Status (1)

Country Link
CN (1) CN107627881B (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108638897A (en) * 2018-06-11 2018-10-12 浙江吉利汽车研究院有限公司 Electric energy control system, automotive control system and automobile
CN110661441B (en) * 2018-06-28 2021-10-22 比亚迪汽车工业有限公司 Electric automobile and motor controller for electric automobile
JP6811219B2 (en) * 2018-09-13 2021-01-13 矢崎総業株式会社 Vehicle power supply
CN109193852A (en) * 2018-10-12 2019-01-11 苏州唯控汽车科技有限公司 Electromobile modularization inverter high pressure turns low pressure transformation charging circuit
CN111231669B (en) * 2018-11-09 2022-06-14 比亚迪股份有限公司 Vehicle-mounted charger, power supply system of electric vehicle and electric vehicle
CN110271423A (en) * 2019-04-03 2019-09-24 苏州阿福机器人有限公司 The series-parallel brake energy recovery circuit and recovery method of electric vehicle
CN112224052B (en) * 2019-06-30 2022-03-18 比亚迪股份有限公司 Energy conversion device, power system and vehicle
CN112224064B (en) * 2019-06-30 2022-03-18 比亚迪股份有限公司 Energy conversion device, power system and vehicle
CN112224053B (en) * 2019-06-30 2022-04-15 比亚迪股份有限公司 Energy conversion device, power system and vehicle
CN112224050B (en) * 2019-06-30 2022-04-15 比亚迪股份有限公司 Energy conversion device, power system and vehicle
CN112224055B (en) * 2019-06-30 2022-03-18 比亚迪股份有限公司 Energy conversion device, power system and vehicle
CN112389230B (en) * 2019-08-15 2022-11-11 比亚迪股份有限公司 Energy conversion device and vehicle
CN112440815B (en) * 2019-08-30 2022-06-28 北京新能源汽车股份有限公司 High-voltage controller, high-voltage controller system and electric automobile
CN111433075B (en) * 2019-09-05 2023-05-09 香港应用科技研究院有限公司 Intelligent power supply center
US11407322B2 (en) * 2019-09-05 2022-08-09 Hong Kong Applied Science and Technology Research Institute Company, Limited Smart power hub
CN110562058B (en) * 2019-09-11 2022-08-19 华为数字能源技术有限公司 Charging and discharging circuit, system and electric automobile
CN210839365U (en) * 2019-10-25 2020-06-23 苏州宝时得电动工具有限公司 Inverter with multiple input interfaces
CN112744085B (en) * 2019-10-31 2022-07-15 比亚迪股份有限公司 Electric automobile and integrated controller and integrated control system thereof
CN111452643B (en) * 2020-03-30 2023-01-31 上海电气集团股份有限公司 Vehicle-mounted charger, vehicle-mounted DC/DC integrated circuit and electric vehicle
CN111525827B (en) * 2020-04-16 2022-12-13 深圳市鹏源电子有限公司 Energy routing system
CN111806267B (en) * 2020-07-27 2022-09-06 哈尔滨工业大学 Electric automobile traction-bidirectional charging system based on quadruple staggered parallel DC/DC
CN111873830B (en) * 2020-09-11 2022-10-25 北京理工大学 Distributed dual-motor driving and vehicle-mounted charging integrated system for electric automobile and charging control method thereof
CN112350641A (en) * 2020-10-31 2021-02-09 中车大连电力牵引研发中心有限公司 Urban rail vehicle multiphase traction system and urban rail vehicle thereof
CN112550064A (en) * 2020-11-12 2021-03-26 华为技术有限公司 DC/DC converter, heating method of power battery pack and electric vehicle
CN113659824B (en) * 2021-07-27 2023-09-12 深圳威迈斯新能源股份有限公司 Control method of three-port energy transmission circuit and energy transmission equipment
CN115230507B (en) * 2022-09-21 2023-02-03 浙大城市学院 Multiplex topology structure capable of simultaneously realizing double-winding motor control and OBC charging

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4432928B2 (en) * 2006-04-04 2010-03-17 トヨタ自動車株式会社 Vehicle support system
CN102570560B (en) * 2012-01-18 2014-07-09 华北电力大学（保定） Charging-discharging system for V2G bilateral power conversion electric automobile and control method thereof
JP2015107022A (en) * 2013-12-02 2015-06-08 トヨタ自動車株式会社 Charging/discharging control device of vehicle
KR102178378B1 (en) * 2015-12-29 2020-11-13 한국전자기술연구원 Integrated power conversion device
CN106936184A (en) * 2017-03-14 2017-07-07 深圳威迈斯电源有限公司 A kind of integrated circuit of Vehicular charger and DCDC

Also Published As

Publication number Publication date
CN107627881A (en) 2018-01-26

Similar Documents

Publication Publication Date Title
CN107627881B (en) Charge-discharge and motor drive integrated device of electric automobile
CN103072492B (en) Active control type hybrid power system for pure electric bus and control method of active control type hybrid power system
CN103171452A (en) Dual-power supply management system and dual-power supply management method for electric vehicle
CN1970359A (en) Power system of charged type hybrid power electric automobile
CN104002692A (en) Composite power system of electric vehicle DC-DC converter and control method
CN103085676B (en) Power generating system of extended-range electric vehicle
CN108437827A (en) A kind of pure electric vehicle dynamical system
CN202634360U (en) Hybrid power control system based on synchronous rectification Buck-Boost bidirectional DC/DC converter
CN100386221C (en) Construction method for electric car flying wheel battery auxiliary power system
Sam et al. Bidirectional integrated on-board chargers for electric vehicles—a review
CN102891522B (en) Dual-energy-storage device with vehicle-mounted charging function
CN204674395U (en) Based on the dual energy source electric car energy management system of predictive control
CN201845828U (en) Fuel cell stroke lengthening unit system
CN101624021B (en) Management method of 12V storage battery working system of pure electric vehicle
CN201985600U (en) Traction frequency converter circuit with charging function in electric vehicle
CN103078372A (en) Method for charging electric automobile in multi-battery pack mode
CN210852070U (en) Braking energy feedback device based on double energy sources for vehicle-mounted electric automobile
CN208424249U (en) A kind of power of motor converting means
CN103683457B (en) Hybrid power public transport super capacitor and lithium battery parallel circuit
CN110614922A (en) Double-energy-source-based braking energy feedback device for vehicle-mounted electric vehicle and control method
CN101531142A (en) Regenerative charging device of electric bicycle
CN202374030U (en) Solar DC-DC converter for vehicle
CN203312879U (en) Mixed-type vehicular charging circuit structure for electric vehicle
CN202260579U (en) Charging device for a hybrid power vehicle
CN112208388A (en) Power conversion system integrating motor drive and battery charging and discharging

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant