CN204506595U - Composite energy storage type drive system of electric automobile - Google Patents
Composite energy storage type drive system of electric automobile Download PDFInfo
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- CN204506595U CN204506595U CN201520216285.2U CN201520216285U CN204506595U CN 204506595 U CN204506595 U CN 204506595U CN 201520216285 U CN201520216285 U CN 201520216285U CN 204506595 U CN204506595 U CN 204506595U
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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
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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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
- Y02T10/72—Electric energy management in electromobility
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Abstract
Composite energy storage type drive system of electric automobile, relates to a kind of drive system of electric automobile.The utility model is in order to solve the low problem of existing drive system of electric automobile energy utilization efficiency.Composite energy storage system comprises two-way DC/DC changer, super capacitor and battery pack; The pwm signal that micro-control unit MCU exports connects convertor circuit by the first driving isolation circuit, the pwm signal that micro-control unit MCU exports also is connected with two-way DC/DC changer by the second driving isolation circuit, convertor circuit drives brshless DC motor, two-way DC/DC changer connects super capacitor, and battery pack connects convertor circuit and two-way DC/DC changer; Composite energy storage system connects convertor circuit provides propulsion source for brshless DC motor.The utility model improves the integral energy utilization ratio of drive system, improves the performance of electronlmobil.
Description
Technical field
The utility model relates to a kind of drive system of electric automobile, is specifically related to a kind of composite energy storage type drive system of electric automobile.
Background technology
In today that science and technology is maked rapid progress, electronlmobil becomes the product of current era progress, because it is green, environmental protection and more and more receive the concern of people.Drive system is one of most important system of electronlmobil, it determines the performance of electronlmobil to a great extent, such as: startup, acceleration capability, grade climbing performance, operating efficiency, safety performance etc., but the battery that uses of general electronlmobil can not frequently and the discharge and recharge of big current, so reduce the driveability of electronlmobil to a great extent, automobile driving system energy utilization efficiency is low.
Utility model content
Give hereinafter about brief overview of the present utility model, to provide about the basic comprehension in some of the present utility model.Should be appreciated that this general introduction is not summarize about exhaustive of the present utility model.It is not that intention determines key of the present utility model or pith, neither intended limitation scope of the present utility model.Its object is only provide some concept in simplified form, in this, as the preorder in greater detail discussed after a while.
Given this, the utility model provides a kind of composite energy storage type drive system of electric automobile, at least to solve the low problem of existing drive system of electric automobile energy utilization efficiency.It is core with convertor circuit that composite energy storage type drive system of electric automobile of the present utility model provides a kind of, and super capacitor and two-way DC/DC changer are auxiliary control circuit, realize effective utilization of drive system of electric automobile energy.
According to an aspect of the present utility model, provide a kind of composite energy storage type drive system of electric automobile, this drive system of electric automobile comprises micro-control unit MCU, the first driving isolation circuit, composite energy storage system, convertor circuit, brshless DC motor and the second driving isolation circuit, and composite energy storage system comprises two-way DC/DC changer, super capacitor and battery pack; The pwm signal that described micro-control unit MCU exports connects convertor circuit by the first driving isolation circuit, the pwm signal that micro-control unit MCU exports also is connected with two-way DC/DC changer by the second driving isolation circuit, described convertor circuit drives brshless DC motor, described two-way DC/DC changer connects super capacitor, and battery pack connects convertor circuit and two-way DC/DC changer.Composite energy storage system connects convertor circuit provides propulsion source for brshless DC motor.
Further: described convertor circuit is made up of three-phase inverter bridge circuit and three-phase Vienna rectifying circuit three-phase convertor circuit.Setting like this, by control can when brshless DC motor electric operation, convertor circuit is allowed to be operated in inverter mode, when brshless DC motor generator operation, it is allowed to be operated in rectification state, the diode rectifier circuit carried with original single bridge circuit is more efficient, and then the energy regenerating produced when being braked by brshless DC motor is fully to composite energy storage system, distributing motor-driven propulsion source by MCU by controlling two-way DC/DC changer again, reaching the object improving drive system energy utilization efficiency.
Further: described composite energy storage type drive system of electric automobile also comprises auxiliary functional circuit, described auxiliary functional circuit comprises control button, power supply module and display instrument, described control button is connected micro-control unit MCU with power supply module, and described micro-control unit MCU carries out the display of correlation parameter by display instrument.Control button can provide startup, accelerates, slows down, cruise or speed-slackening signal, after inputing to micro-control unit MCU process, through the first driving isolation circuit, pwm signal is exported to convertor circuit, allow brshless DC motor by instruction operation, power supply module is that micro-control unit MCU powers, the state of the real-time display driving system of display instrument.
Further: described composite energy storage type drive system of electric automobile also comprises temperature sensing circuit, the first driving isolation circuit connects micro-control unit MCU by temperature sensing circuit.
Further: described composite energy storage type drive system of electric automobile also comprises voltage detecting circuit, and super capacitor is connected voltage detecting circuit with battery pack, described voltage detecting circuit connects micro-control unit MCU.
Further: described composite energy storage type drive system of electric automobile also comprises current detection circuit, brshless DC motor connects micro-control unit MCU by current detection circuit.
Further: described composite energy storage type drive system of electric automobile also comprises speed detect circuit, brshless DC motor connects micro-control unit MCU by speed detect circuit.
The temperature detected, voltage signal, current signal and tach signal are passed to micro-control unit MCU process by temperature sensing circuit, voltage detecting circuit, current detection circuit and speed detect circuit.
The effect that the composite energy storage type drive system of electric automobile that the utility model proposes reaches is: composite energy storage type drive system of electric automobile of the present utility model, based on battery pack and super capacitor, jointly for brshless DC motor provides power supply, and by convertor circuit realize motor powered run time and running under braking time AC-DC conversion, the recovery of energy during effective increase regenerative brake, and then improve the integral energy utilization ratio of drive system, improve the performance of electronlmobil.
Accompanying drawing explanation
Fig. 1 is the functional block diagram of the composite energy storage type drive system of electric automobile according to embodiment of the present utility model;
Fig. 2 is the convertor circuit schematic diagram of embodiment;
Fig. 3 is the hall signal isolation shaping circuit figure of embodiment;
Fig. 4 is the overtemperature and overcurrent protective circuit figure of embodiment;
In figure: 1-micro-control unit MCU; 2-temperature sensing circuit; 3-first driving isolation circuit; 4-convertor circuit; 5-brshless DC motor; 6-speed detect circuit; 7-current detection circuit; 8-second driving isolation circuit; The two-way DC/DC changer of 9-; 10-super capacitor; 11-battery pack; 12-voltage detecting circuit; 13-control button; 14-power supply module; 15-display instrument.
Detailed description of the invention
To be described one exemplary embodiment of the present utility model by reference to the accompanying drawings hereinafter.For clarity and conciseness, all features of actual embodiment are not described in the description.But, should understand, must make a lot specific to the decision of embodiment in the process of any this practical embodiments of exploitation, to realize the objectives of developer, such as, meet those limiting conditions relevant to system and business, and these limiting conditions may change to some extent along with the difference of embodiment.In addition, although will also be appreciated that developmental work is likely very complicated and time-consuming, concerning the those skilled in the art having benefited from the utility model disclosure, this developmental work is only routine task.
At this, also it should be noted is that, in order to avoid the utility model fuzzy because of unnecessary details, illustrate only in the accompanying drawings with according to the closely-related apparatus structure of scheme of the present utility model and/or treatment step, and eliminate other details little with the utility model relation.
As shown in Figure 1, embodiment of the present utility model provides composite energy storage type drive system of electric automobile and comprises micro-control unit MCU1, temperature sensing circuit 2, first driving isolation circuit 3, composite energy storage system, convertor circuit 4, brshless DC motor 5, speed detect circuit 6, current detection circuit 7, second driving isolation circuit 8, voltage detecting circuit 12 and auxiliary functional circuit, and composite energy storage system comprises two-way DC/DC changer 9, super capacitor 10 and battery pack 11; Auxiliary functional circuit comprises control button 13, power supply module 14 and display instrument 15; The pwm signal that described micro-control unit MCU1 exports connects convertor circuit 4 by the first driving isolation circuit 3, the pwm signal that micro-control unit MCU1 exports also is connected with two-way DC/DC changer 9 by the second driving isolation circuit 8, described convertor circuit 4 drives brshless DC motor 5, described two-way DC/DC changer 9 connects super capacitor 10, and battery pack 11 connects convertor circuit 4 and two-way DC/DC changer 9; Convertor circuit 4 is made up of three-phase inverter bridge circuit and three-phase Vienna rectifying circuit three-phase convertor circuit; Described control button 13 is connected micro-control unit MCU1 with power supply module 14, and described micro-control unit MCU1 carries out the display of correlation parameter by display instrument 15; First driving isolation circuit 3 connects micro-control unit MCU by temperature sensing circuit 2; Super capacitor 10 is connected voltage detecting circuit 12 with battery pack 11, and described voltage detecting circuit 12 connects micro-control unit MCU; Brshless DC motor 5 is connected micro-control unit MCU by current detection circuit 7 with speed detect circuit 6.
Composition graphs 1 and Fig. 2, the composite energy storage type drive system of electric automobile of present embodiment adopts micro-control unit MCU as control center, is that main body designs with convertor circuit.When control button provides and drives command signal, micro-control unit MCU can export the IGBT break-make that corresponding pwm signal controls the inverter circuit in convertor circuit, drive brshless DC motor smooth operation, battery pack now in composite energy storage system is powered together with super capacitor, start for electronlmobil or accelerate to provide enough power, when control button provides speed-slackening signal, micro-control unit MCU understands the IGBT break-make that output pwm signal controls the rectifying circuit in convertor circuit equally, with guarantee more effective recovery motor braking produce energy, such composite energy storage system will export and reclaim the energy of motor driven systems fully, improve the efficiency of drive system, improve the tractive performance of electronlmobil.
In addition, according to a kind of implementation, as depicted in figs. 1 and 2: the signal such as control button can provide startup, accelerates, slows down, cruises, braking, after inputing to micro-control unit MCU process, through the first driving isolation circuit, six road pwm signals are exported to the grid of VT1 to VT6 in inverter circuit, allow brshless DC motor by instruction operation, composite energy storage system provides direct supply for convertor circuit, electric capacity C2, C3 and resistance R3 are filter circuit, make DC bus-bar voltage steady, spine reduces, direct current (DC) better quality.Contactless switch J1 and resistance R1, R2 form the soft start unit of power power circuit together with C1.For the unexpected power-off of anti-locking system and the power switch pipe that causes leads directly to, closed type contactless switch J2 and resistance R4 forms power-off protecting circuit, and during system cut-off, J2 closes, and resistance R4 is introduced discharge loop, plays a protective role.
In addition, according to a kind of implementation, as shown in figures 1 and 3: the drive system of general motor is all by rotating speed, current double closed-loop forms, in the present embodiment, the current value of system power ring is obtained by the Hall current sensor in current detection circuit, through A/D chip conversion after by digital transfer to micro-control unit MCU, the hall position sensor that the Rotating speed measring of speed ring is distributed by three location intervals 120 ° detects, hall signal is after high speed photo coupling device 6N137 isolates, again through six High voltage output phase inverter 74LS06 shapings, improve the anti-interference resistance of system, and by signal transmission to microcontroller list MCU, the current position of rotor is calculated by it, and calculate rotating speed size.
In addition, according to a kind of implementation, as shown in Figure 1 and Figure 4: the temperature sensing circuit in the present embodiment has excess temperature, overcurrent protection function, by the temperature of temperature switch detection power switching valve IGBT, once temperature exceedes setting value, temperature switch closes, export high level signal to micro-control unit MCU, micro-control unit MCU will quit work by control-driven system, treat that temperature return is normal, system still can be run according to control button, if during system overcurrent, current signal I becomes after voltage signal through electric resistance changing, compare with the setting value of potential device LM339, once exceed the setting value of electric current, this high level signal can be passed to MCU equally, enter overcurrent protection state, treat that electric current recovers normal, system roll-back.
In addition, according to a kind of implementation, as depicted in figs. 1 and 2: the system in the present embodiment has regenerative braking capability.After control button provides braking instruction, electric power generation runs, now system is in energy recovery state, the alternating current of feedback is carried out rectification through Vienna rectifying circuit by motor, because it has low switch stress, power factor is high, and Harmonics of Input is lower, reliability is high, makes rectification more efficient like this.When each interval of Vienna rectifying circuit works, can be equivalent to the highest positive Boost boost chopper formed with mesophase spherule, the cascade of the negative Boost of mesophase spherule and minimum phase composition, this kind of mode of operation is actually carries out copped wave to line voltage.
In addition, according to a kind of implementation, as shown in Figure 2: for avoiding occurring electric current " confusion " flow field problem when inversion and rectification, closing by micro-control unit MCU control contactor J3 and J4, ensure the independence of inversion and rectification two kinds of circuit, like this when regenerative brake, by the break-make of control VT7, VT8, VT9 power switch pipe, by the energy storage of feedback to composite energy storage system.
In addition, according to a kind of implementation, as Fig. 1 and shown: the two-way DC/DC changer of composite energy storage system is a bridge between battery pack and super capacitor, the terminal voltage of battery pack and super capacitor is detected by voltage detecting circuit, whereby, micro-control unit MCU can according to the rated voltage of both magnitudes of voltage and brshless DC motor, determine that controlling two-way DC/DC changer is boosting or step-down, that energy list is reclaimed to battery pack, or single recovery, to super capacitor, is still reclaimed simultaneously.
In addition, according to a kind of implementation, as shown in Figure 1: two-way DC/DC changer is also fast by switching speed, the insulated gate bipolar transistor IGBT that the little and saturation pressure of driving power reduces is formed, have Buck and Boost two kinds of patterns, the pwm signal exported by MCU is controlled through driving isolation circuit.The composite energy storage system of such composition can the energy of actv. reclaiming feedback braking, and start at electronlmobil, accelerate and climbing time sufficient electric energy is provided, make drive system Effec-tive Function.
Finally, according to a kind of implementation, as shown in Figure 1: the display instrument connecting micro-control unit MCU, the various parameter collected can be shown in real time, as voltage, electric current etc., and the every terms of information of energy display driving system, as travelled distance, rotating speed etc., facilitate effector to observe, with this, control button is operated.
Known by describing above, the above-mentioned composite energy storage type drive system of electric automobile according to embodiment of the present utility model, based on battery pack and super capacitor, jointly for brshless DC motor provides power supply, and by convertor circuit realize motor powered run time and running under braking time AC-DC conversion, the recovery of energy during effective increase regenerative brake, and then the integral energy utilization ratio improving drive system, improve the performance of electronlmobil.
Claims (7)
1. composite energy storage type drive system of electric automobile, comprise micro-control unit MCU (1), the first driving isolation circuit (3), composite energy storage system, convertor circuit (4), brshless DC motor (5) and the second driving isolation circuit (8), it is characterized in that: composite energy storage system comprises two-way DC/DC changer (9), super capacitor (10) and battery pack (11); The pwm signal that described micro-control unit MCU (1) exports connects convertor circuit (4) by the first driving isolation circuit (3), the pwm signal that micro-control unit MCU (1) exports also is connected with two-way DC/DC changer (9) by the second driving isolation circuit (8), described convertor circuit (4) drives brshless DC motor (5), described two-way DC/DC changer (9) connects super capacitor (10), and battery pack (11) connects convertor circuit (4) and two-way DC/DC changer (9).
2. composite energy storage type drive system of electric automobile according to claim 1, is characterized in that: described convertor circuit (4) is made up of three-phase inverter bridge circuit and three-phase Vienna rectifying circuit three-phase convertor circuit.
3. composite energy storage type drive system of electric automobile according to claim 1 and 2, it is characterized in that: described composite energy storage type drive system of electric automobile also comprises auxiliary functional circuit, described auxiliary functional circuit comprises control button (13), power supply module (14) and display instrument (15), described control button (13) is connected micro-control unit MCU (1) with power supply module (14), and described micro-control unit MCU (1) carries out the display of correlation parameter by display instrument (15).
4. composite energy storage type drive system of electric automobile according to claim 3, it is characterized in that: described composite energy storage type drive system of electric automobile also comprises temperature sensing circuit (2), the first driving isolation circuit (3) connects micro-control unit MCU by temperature sensing circuit (2).
5. composite energy storage type drive system of electric automobile according to claim 3, it is characterized in that: described composite energy storage type drive system of electric automobile also comprises voltage detecting circuit (12), super capacitor (10) is connected voltage detecting circuit (12) with battery pack (11), and described voltage detecting circuit (12) connects micro-control unit MCU.
6. composite energy storage type drive system of electric automobile according to claim 3, it is characterized in that: described composite energy storage type drive system of electric automobile also comprises current detection circuit (7), brshless DC motor (5) connects micro-control unit MCU by current detection circuit (7).
7. composite energy storage type drive system of electric automobile according to claim 3, it is characterized in that: described composite energy storage type drive system of electric automobile also comprises speed detect circuit (6), brshless DC motor (5) connects micro-control unit MCU by speed detect circuit (6).
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| CN201520216285.2U CN204506595U (en) | 2015-04-10 | 2015-04-10 | Composite energy storage type drive system of electric automobile |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106143168A (en) * | 2016-07-19 | 2016-11-23 | 西安交通大学 | The multi-channel parallel of a kind of electric automobile interlocks output type mixed energy storage system and method |
| CN106253677A (en) * | 2016-08-22 | 2016-12-21 | 广东华中科技大学工业技术研究院 | A kind of non-current-sharing parallel connection direct converting means and multiobjective optimization control method |
| CN106347139A (en) * | 2016-11-10 | 2017-01-25 | 哈尔滨理工大学 | Composite power supply regeneration braking device applied to pure electric vehicles |
| CN106364341A (en) * | 2016-08-26 | 2017-02-01 | 西安交通大学 | Multi-mode switching composite power supply topological structure of electric vehicle and control method |
| CN106740153A (en) * | 2016-12-29 | 2017-05-31 | 西安电子科技大学 | A kind of intelligent power power-supply system for pure electric vehicle |
| CN106981480A (en) * | 2017-05-27 | 2017-07-25 | 富士电机（中国）有限公司 | IGBT module, dynamical system and hybrid vehicle |
| CN107351710A (en) * | 2017-07-17 | 2017-11-17 | 西安迅湃快速充电技术有限公司 | The determination method of capacitance group minimum capacitance in a kind of bidirectional DC/DC electricity electric mixed dynamic system of discharge and recharge and the system |
| CN108749598A (en) * | 2016-11-01 | 2018-11-06 | 大连民族大学 | Electronic racing car hybrid power power-supply management system |
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| CN106143168B (en) * | 2016-07-19 | 2019-03-01 | 西安交通大学 | A kind of multi-channel parallel of electric car interlocks output type mixed energy storage system and method |
| CN106143168A (en) * | 2016-07-19 | 2016-11-23 | 西安交通大学 | The multi-channel parallel of a kind of electric automobile interlocks output type mixed energy storage system and method |
| CN106253677B (en) * | 2016-08-22 | 2018-11-09 | 广东华中科技大学工业技术研究院 | A kind of non-stream parallel connection direct converting means and multiobjective optimization control method |
| CN106253677A (en) * | 2016-08-22 | 2016-12-21 | 广东华中科技大学工业技术研究院 | A kind of non-current-sharing parallel connection direct converting means and multiobjective optimization control method |
| CN106364341B (en) * | 2016-08-26 | 2018-12-07 | 西安交通大学 | A kind of the multi-mode switching composite power source topological structure and control method of electric car |
| CN106364341A (en) * | 2016-08-26 | 2017-02-01 | 西安交通大学 | Multi-mode switching composite power supply topological structure of electric vehicle and control method |
| CN108749598A (en) * | 2016-11-01 | 2018-11-06 | 大连民族大学 | Electronic racing car hybrid power power-supply management system |
| CN106347139A (en) * | 2016-11-10 | 2017-01-25 | 哈尔滨理工大学 | Composite power supply regeneration braking device applied to pure electric vehicles |
| CN106740153A (en) * | 2016-12-29 | 2017-05-31 | 西安电子科技大学 | A kind of intelligent power power-supply system for pure electric vehicle |
| CN106740153B (en) * | 2016-12-29 | 2019-05-21 | 西安电子科技大学 | A kind of intelligent power power-supply system for pure electric vehicle |
| CN106981480A (en) * | 2017-05-27 | 2017-07-25 | 富士电机（中国）有限公司 | IGBT module, dynamical system and hybrid vehicle |
| CN106981480B (en) * | 2017-05-27 | 2023-10-27 | 富士电机（中国）有限公司 | IGBT module, power system and hybrid electric vehicle |
| CN107351710A (en) * | 2017-07-17 | 2017-11-17 | 西安迅湃快速充电技术有限公司 | The determination method of capacitance group minimum capacitance in a kind of bidirectional DC/DC electricity electric mixed dynamic system of discharge and recharge and the system |
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Granted publication date: 20150729 Termination date: 20160410 |