CN104578281A - Electric car charging control method, as well as motor drive system and control circuit thereof - Google Patents
Electric car charging control method, as well as motor drive system and control circuit thereof Download PDFInfo
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- CN104578281A CN104578281A CN201410829589.6A CN201410829589A CN104578281A CN 104578281 A CN104578281 A CN 104578281A CN 201410829589 A CN201410829589 A CN 201410829589A CN 104578281 A CN104578281 A CN 104578281A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
- B60L15/20—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles for control of the vehicle or its driving motor to achieve a desired performance, e.g. speed, torque, programmed variation of speed
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L15/00—Methods, circuits, or devices for controlling the traction-motor speed of electrically-propelled vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/10—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles characterised by the energy transfer between the charging station and the vehicle
- B60L53/12—Inductive energy transfer
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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
- Y02T10/64—Electric machine technologies in electromobility
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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
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
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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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- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention discloses an electric car charging control method, as well as a motor drive system and a control circuit thereof. The method comprises steps as follows: the control circuit in the motor drive system receives a charging request, and the control circuit responds to the charging request under the condition that a motor drive request is not received and sends a charging signal to a drive circuit module in the motor drive system, so that a power module in the motor drive system is controlled to charge a power battery pack. Therefore, an electric car is charged safely and reliably under the premise that the hardware cost is not increased.
Description
Technical field
The present invention relates to charging electric vehicle technical field, more particularly, relate to charging electric vehicle control method, motor driven systems and control circuit thereof.
Background technology
Electric automobile, using chargeable power battery pack as power resources, drives wheels travel with alternating current machine, and have the good characteristics such as energy-saving and environmental protection, noise is little, energy source is wide, its prospect is extensively had an optimistic view of.
The charging technique of electric automobile is the focus of this area research, its charging system mainly comprises control circuit, drive circuit module and power model, wherein: power model is connected to control circuit by drive circuit module, for charging to power battery pack under the control of control circuit.
But, because the power model capacity in charging system is smaller, easily generate heat under long-time high-power applications, there is the hidden danger of power tube high temperature blast, and the power model cost of Large Copacity, high reliability be high; Therefore, how under the prerequisite not increasing hardware cost, realize the safe and reliable charging of electric automobile, become this area problem demanding prompt solution.
Summary of the invention
In view of this, the invention provides charging electric vehicle control method, motor driven systems and control circuit thereof, with under the prerequisite not increasing hardware cost, realize the safe and reliable charging of electric automobile.
A kind of charging electric vehicle control method, comprising:
Control circuit in motor driven systems receives charge request;
Described control circuit, when not receiving motor driving request, responds described charge request, sends charging signals, charge with the power model controlled in described motor driven systems to power battery pack to the drive circuit module in described motor driven systems.
Alternatively, described to the drive circuit module transmission charging signals in described motor driven systems, after power battery pack being charged with the power model controlled in described motor driven systems, also comprise: described control circuit, when receiving described motor driving request, stops continuing to send described charging signals to described drive circuit module.
Alternatively, the control circuit in described motor driven systems also comprises after receiving charge request: described control circuit, when receiving described motor driving request, stops sending motor drive signal to described drive circuit module.
Wherein, described charge request sends after being completed by the power model precharge of pre-charge controller in described motor driven systems.
Wherein, described motor driving request is Electrical key signal.
A control circuit in motor driven systems, comprising:
First input end mouth, for receiving charge request;
Second input port, for receiving motor driving request;
The output port be connected with the drive circuit module in described motor driven systems;
And the signal processor be connected with described output port with described first input end mouth, described second input port respectively, for when described second input port is invalid, once detect that described first input end mouth is effective, then respond described charge request, send charging signals to described drive circuit module, with the power model controlled in described motor driven systems, power battery pack is charged.
Alternatively, described signal processor is sending charging signals to described drive circuit module, to control described power model to after power battery pack charging, also for when detecting that described second input port is effective, stop sending described charging signals to described drive circuit module.
Alternatively, described signal processor, also in the effective situation of described second input port, once detect that described first input end mouth is effective, then stops sending motor drive signal to described drive circuit module.
A kind of motor driven systems, comprises the control circuit of the electric energy output end connecting power battery pack respectively, power model and drive circuit module, and wherein, described power model connects external communication motor, in addition:
Described power model is also connected with the electric energy output end of external power source and the electrical energy inputs of described power battery pack;
Described control circuit, when not receiving motor driving request, once receive charge request, then responds described charge request, sends charging signals, charge to control described power model to described power battery pack to described drive circuit module.
Alternatively, described motor driven systems also comprises: pre-charge controller;
Wherein, described pre-charge controller is connected with described control circuit, for after described power model precharge completes, sends described charge request to described control circuit.
As can be seen from above-mentioned technical scheme, the motor driven systems of electric automobile is multiplexed with charging system and uses by the present invention, because the power model in described motor driven systems has larger power capacity, be enough to meet the demand of described charging system to high-capacity power module, and the security performance of described motor driven systems all have passed through the strict test of national authentication office, therefore, the present invention, under the prerequisite not increasing hardware cost, improves the security reliability of charging system for electric automobile.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only embodiments of the invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to the accompanying drawing provided.
Fig. 1 is a kind of charging electric vehicle control method flow chart disclosed in the embodiment of the present invention;
Fig. 2 is a kind of charging system for electric automobile structural representation disclosed in prior art;
Fig. 3 is a kind of electric automobile motor drive system structural representation disclosed in prior art;
Fig. 4 is the embodiment of the present invention another charging electric vehicle control method flow chart disclosed;
Fig. 5 is the embodiment of the present invention another charging electric vehicle control method flow chart disclosed;
Control circuit structural representation in Fig. 6 a kind of motor driven systems disclosed in the embodiment of the present invention;
Fig. 7 is a kind of motor driven systems structural representation disclosed in the embodiment of the present invention;
Fig. 8 is the embodiment of the present invention another motor driven systems structural representation disclosed.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention (wherein, direction of arrow index signal in Fig. 2, Fig. 3, Fig. 7, Fig. 8 flows to), technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
See Fig. 1, the embodiment of the invention discloses a kind of charging electric vehicle control method, with under the prerequisite not increasing hardware cost, realize the safe and reliable charging of electric automobile, comprising:
Step 101: the control circuit in motor driven systems receives charge request;
Step 102: described control circuit is not when receiving motor driving request, respond described charge request, send charging signals to the drive circuit module in described motor driven systems, with the power model controlled in described motor driven systems, power battery pack is charged.
The motor driven systems of electric automobile is multiplexed with charging system and uses by the present embodiment, because the power model in described motor driven systems has larger power capacity, be enough to meet the demand of described charging system to high-capacity power module, and the security performance of described motor driven systems all have passed through the strict test of national authentication office, therefore, the present embodiment, under the prerequisite not increasing hardware cost, improves the security reliability of charging system for electric automobile.
In order to clearly describe the technical scheme described in the present embodiment, be described in detail below.
First, see Fig. 2, known existing charging system for electric automobile comprises control circuit 201, drive circuit module 202 and power model 203 and other additional devices, wherein: control circuit 201, drive circuit module 202 and power model 203 are powered by external power source 204; Power model 203 connects the electrical energy inputs of power battery pack 205, and by drive circuit module 202 access control circuit 201, for powering to power battery pack 205 under the control of control circuit 201; Described additional device comprises isolating transformer 206, rectifying tube 207, the output inductor 208 between the electrical energy inputs being connected to power model 203 and power battery pack 205 and exports commutation capacitor 209; In addition, when external power source 204 is the alternating current of 220V/50Hz, described additional device also comprises the input rectifying module 210 be connected between external power source 204 and power model 203.
The weak point of existing charging system for electric automobile is: the power output of power model 203 is generally at about 2.5kW ~ 10kW, and power model 203 carries out the even more for up to 5h of big current work, this is larger to the capacity requirement of power model 203; Take rated power as the power model 203 of 2.5kW be example, its capacity at least should be 3kW, otherwise high-power applications for a long time, and power model 203 easily generates heat, by may the situation of power tube high temperature blast in emergent power module 203.In other words, want the security reliability improving charging system for electric automobile, guaranteed output module 203 will have enough large power capacity, but power model 203 cost of Large Copacity, high reliability is very high, this considerably increases production cost and the selling price of electric automobile, be unfavorable for the universal of electric automobile.
For avoiding the problem occurring that above-mentioned charging system for electric automobile brings, the motor driven systems of electric automobile is multiplexed with charging system and uses by the present embodiment.See Fig. 3, known existing electric automobile motor drive system comprises control circuit 301, drive circuit module 302 and power model 303, wherein: control circuit 301, drive circuit module 302 and power model 303 are powered by power battery pack 304; Power model 303 connects the electrical energy inputs of alternating current machine 305, and by drive circuit module 302 access control circuit 301, operates for driving alternating current machine 305 under the control of control circuit 301.The advantage of existing electric automobile motor drive system is just: motor driven systems is electric automobile " brain ", and the capacity of power model 303 is generally at more than 30kW; And the security performance of described motor driven systems all have passed through the strict test of national authentication office, and security reliability is high.
Based on this, in multiplexing process, only charging control logic need be write the control circuit in motor driven systems, and (described additional device comprises the switching device for break-make charging circuit and motor driver circuit to add simple additional device, and run power battery pack charging process necessary isolating transformer, rectifying tube, output inductor and output commutation capacitor etc.), the integrated of motor driven systems and charging system can be realized.The control logic of the control circuit in the motor driven systems after improvement is mainly: described control circuit is when only receiving motor driving request, send motor drive signal to the drive circuit module in motor driven systems, drive alternating current machine running with the power model controlled in motor driven systems; And described control circuit is not when receiving motor driving request, once receive charge request, then can send charging signals to described drive circuit module, to control described power model, power battery pack is charged, the latter is that described control circuit is to the response condition of described charge request and response action, the control circuit after also namely improving and the obvious difference part of existing control circuit.
Wherein, motor driven systems after described improvement runs the process of power battery pack charging, be specially: the control circuit in motor driven systems provides charging signals to the drive circuit module in motor driven systems, described drive circuit module is by controlling the break-make of the power tube in the power model in motor driven systems, and the electric energy controlling described power model exports; The alternating current that described power model exports, after isolating transformer, rectifying tube, output inductor and the process of output commutation capacitor, converts direct current to and is supplied to power battery pack and charges; Meanwhile, described control circuit obtains various signal (comprising the feedback signal of described power model and described power battery pack), realizes the closed-loop control of charging process.
Wherein, motor driven systems after described improvement runs motor-driven process, be specially: described control circuit provides motor drive signal to described drive circuit module, described drive circuit module controls described power model by the break-make controlling power tube in described power model and drives alternating current machine running; Simultaneously, described control circuit obtains various signal (progress signal, backing signal, brake signal, throttle signal, Electrical key signal, and the feedback signal such as motor speed, cell voltage, current of electric, system temperature), realize the closed-loop control that motor drives process.
Above-mentioned power battery pack charging process and motor drive process to run simultaneously, namely, under synchronization, described control circuit only performs charging control logic and charging circuit conducting, or only actuating motor drived control logic and the conducting of motor driver circuit of described control circuit, to avoid electric automobile dysfunction.
Preferably, described motor driving request adopts existing Electrical key signal, and when key is got to " ON ", described Electrical key signal starts to send, and when key is got to " OFF ", described Electrical key signal stops sending; Described charge request sends after being completed by the power model precharge of pre-charge controller in described motor driven systems.Consider that the input of described power model is generally configured with voltage stabilizing bulky capacitor, if there is no small area analysis precharge, then, when it is directly connected with external power source, there will be impulse current, lose the useful life of part, therefore need to design precharge loop; And the effect of described pre-charge controller is just, when safe charging environment being detected, first controlling described precharge loop to described power model precharge, after precharge completes, just starting charge request to the control circuit in motor driven systems.
Comprehensive foregoing description can be found out, hardware cost due to described auxiliary circuit is far smaller than existing charging system, and the motor driven systems of electric automobile is enough for charging system provides safe and reliable hardware supports, therefore, the present embodiment is under the prerequisite not increasing hardware cost, achieve the safe and reliable charging of electric automobile, solve prior art Problems existing.In addition, the present embodiment also reduces the overall volume of electric automobile motor internal drive system and charging system, and when the capacity requirement of charging system is larger, this small volume effect is more obvious.
See Fig. 4, the embodiment of the invention discloses another charging electric vehicle control method, with under the prerequisite not increasing hardware cost, realize the safe and reliable charging of electric automobile, comprising:
Step 401: the control circuit in motor driven systems receives charge request;
Step 402: described control circuit is not when receiving motor driving request, respond described charge request, send charging signals to the drive circuit module in described motor driven systems, with the power model controlled in described motor driven systems, power battery pack is charged;
Step 403: described control circuit, when receiving described motor driving request, stops continuing to send described charging signals to described drive circuit module.
In the process that described power model charges to described power battery pack, described control circuit can continue to send described charging signals, to realize the closed-loop control of charging process; And power battery pack is uncharged complete before, once motor driving request be detected, then need to interrupt described power battery pack charging process (namely stopping continuing to send described charging signals to described drive circuit module) immediately, to avoid described motor driven systems when running charge mode, starter motor drive pattern again, and then occur that two cover patterns are run simultaneously and make the phenomenon of electric automobile dysfunction.
See Fig. 5, the embodiment of the invention discloses another charging electric vehicle control method, with under the prerequisite not increasing hardware cost, realize the safe and reliable charging of electric automobile, comprising:
Step 501: the control circuit in motor driven systems receives charge request;
Step 502: whether described control circuit has received motor driving request; Described control circuit, when not receiving described motor driving request, enters step 503, when receiving described motor driving request, enters step 505;
Step 503: described control circuit responds described charge request, sends charging signals to the drive circuit module in described motor driven systems, charges with the power model controlled in described motor driven systems to power battery pack;
Step 504: described control circuit, when receiving described motor driving request, stops continuing to send described charging signals to described drive circuit module.
Step 505: stop sending motor drive signal to described drive circuit module.
Drive at described power model in the process of alternating current machine running, described control circuit can continue to send described motor drive signal, to realize the closed-loop control that alternating current machine drives process; And drive in the process still run of process at alternating current machine, once charge request be detected, then need to interrupt described alternating current machine immediately and drive process (namely stopping continuing to send motor drive signal to described drive circuit module), to avoid described motor driven systems when running motor drive mode, start charge mode again, and then occur that two cover patterns are run simultaneously and make the phenomenon of electric automobile dysfunction.
See Fig. 6, the embodiment of the invention also discloses the control circuit in a kind of motor driven systems, with under the prerequisite not increasing hardware cost, realize the safe and reliable charging of electric automobile, comprising:
First input end mouth 601, for receiving charge request;
Second input port 602, for receiving motor driving request;
The output port 603 be connected with the drive circuit module in described motor driven systems;
And the signal processor 604 be connected with output port 603 with first input end mouth 601, second input port 602 respectively, for when the second input port 602 is invalid, once detect that first input end mouth 601 is effective, then respond described charge request, send charging signals to described drive circuit module, with the power model controlled in described motor driven systems, power battery pack is charged.
Alternatively, signal processor 604 is sending charging signals to described drive circuit module, to control described power model to after power battery pack charging, also for when detecting that the second input port 602 effectively, stop continuing to send described charging signals to described drive circuit module.
Alternatively, signal processor 604, also in the effective situation of the second input port 602, once detect that first input end mouth 601 is effective, then stops sending motor drive signal to described drive circuit module.
See Fig. 7, the embodiment of the invention also discloses a kind of motor driven systems, comprising:
Connect the control circuit 701 of the electric energy output end of power battery pack 700, power model 702 and drive circuit module 703 respectively, wherein power model 702 connects external communication motor 704; In addition for described motor driven systems is multiplexed with charge control system, also should arrange:
Power model 702 is also connected with the electric energy output end of external power source 705 and the electrical energy inputs of power battery pack 700;
Control circuit 701, when not receiving motor driving request, once receive charge request, then responds described charge request, sends charging signals to drive circuit module 703, charges to control power model 702 pairs of power battery pack 700.
Alternatively, control circuit 701 is sending charging signals to drive circuit module 703, after controlling power model 702 pairs of power battery pack 700 chargings, also for when described motor driving request being detected, stop continuing to send described charging signals to drive circuit module 703.
Alternatively, control circuit 701, also for when receiving described motor driving request, once described charge request be detected, then stops sending motor drive signal to drive circuit module 703.
According to the above-mentioned functions of control circuit 701, known for making existing motor driven systems multiplexingly to use as charging system, must also need in described existing motor driven systems to introduce some simple additional devices, as: be connected to the first gate-controlled switch 706 between the electrical energy inputs of power battery pack 700 and power model 702, isolating transformer 707, rectifying tube 708, output inductor 709 and export commutation capacitor 710; Be connected to the second gate-controlled switch 711 between the electric energy output end of power battery pack 700 and power model 702; Be connected to the 3rd gate-controlled switch 712 between alternating current machine 704 and power model 702; Be connected to the 4th gate-controlled switch 713 between external power source 705 and power model 702; Wherein, the control end of the first gate-controlled switch 706, second gate-controlled switch 711, the 3rd gate-controlled switch 712 and the 4th gate-controlled switch 713 all accesses controlable electric current 701 (this annexation is not shown).Certainly, when external power source 705 is the alternating current of 220V/50Hz, described additional device also comprises the input rectifying module 714 be connected between external power source 705 and power model 702.
Below, the operation principle of motor driven systems shown in Fig. 7 is described in detail:
When described motor driven systems needs to run motor drive mode, control circuit 701 controls the first gate-controlled switch 706 and the 4th gate-controlled switch 713 disconnects, control the second gate-controlled switch 711 and the 3rd gate-controlled switch 712 closes, and starter motor drived control logic, thus realize closed-loop control alternating current machine 704 being driven to process;
When described motor driven systems needs to run charge mode, control circuit 701 controls the first gate-controlled switch 706 and the 4th gate-controlled switch 713 closes, control the second gate-controlled switch 711 and the 3rd gate-controlled switch 712 disconnects, and start charging control logic, thus realize the closed-loop control to power battery pack 700 charging process;
Above-mentioned two kinds of closed loop control process coexist in the motor driven systems of electric automobile but asynchronously run, and under the prerequisite not increasing hardware cost, achieve the safe and reliable charging of electric automobile.
Alternatively, see Fig. 8, described motor driven systems also comprises: pre-charge controller 715;
Wherein, pre-charge controller 715 is connected with control circuit 701, for after power model 702 precharge completes, sends described charge request to control circuit 701.
According to the above-mentioned functions of pre-charge controller 715, known for realizing precharge, must also need in described motor driven systems to introduce corresponding additional device, as: the precharge branch being connected in parallel on the 4th gate-controlled switch 716 two ends, comprises the pre-charge resistance R and the 5th gate-controlled switch 716 that are in series.
The control logic of pre-charge controller 715 is mainly: pre-charge controller 715 is when safe charging environment being detected, control the 5th gate-controlled switch 716 closed (annexation between pre-charge controller 715 and the 5th gate-controlled switch 716 is not shown), now external power source 705 take small area analysis as power model 702 precharge, after precharge completes, pre-charge controller 715 controls the 5th gate-controlled switch 716 again and disconnects, and send charge request to control circuit 701, thus external power source 705 is powered to power model 702 with big current.
In sum, the motor driven systems of electric automobile is multiplexed with charging system and uses by the present invention, because the power model in described motor driven systems has larger power capacity, be enough to meet the demand of described charging system to high-capacity power module, and the security performance of described motor driven systems all have passed through the strict test of national authentication office, therefore, the present invention, under the prerequisite not increasing hardware cost, improves the security reliability of charging system for electric automobile.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For motor driven systems disclosed in embodiment and control circuit thereof, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a charging electric vehicle control method, is characterized in that, comprising:
Control circuit in motor driven systems receives charge request;
Described control circuit, when not receiving motor driving request, responds described charge request, sends charging signals, charge with the power model controlled in described motor driven systems to power battery pack to the drive circuit module in described motor driven systems.
2. charge control method according to claim 1, is characterized in that, described to the drive circuit module transmission charging signals in described motor driven systems, after charging, also comprises with the power model controlled in described motor driven systems to power battery pack:
Described control circuit, when receiving described motor driving request, stops continuing to send described charging signals to described drive circuit module.
3. charge control method according to claim 1 and 2, is characterized in that, the control circuit in described motor driven systems also comprises after receiving charge request:
Described control circuit, when receiving described motor driving request, stops sending motor drive signal to described drive circuit module.
4. charge control method according to claim 1, is characterized in that, sends after described charge request is completed by the power model precharge of pre-charge controller in described motor driven systems.
5. charge control method according to claim 1, is characterized in that, described motor driving request is Electrical key signal.
6. the control circuit in motor driven systems, is characterized in that, comprising:
First input end mouth, for receiving charge request;
Second input port, for receiving motor driving request;
The output port be connected with the drive circuit module in described motor driven systems;
And the signal processor be connected with described output port with described first input end mouth, described second input port respectively, for when described second input port is invalid, once detect that described first input end mouth is effective, then respond described charge request, send charging signals to described drive circuit module, with the power model controlled in described motor driven systems, power battery pack is charged.
7. control circuit according to claim 6, it is characterized in that, described signal processor is sending charging signals to described drive circuit module, to control described power model to after power battery pack charging, also for when detecting that described second input port is effective, stop sending described charging signals to described drive circuit module.
8. the control circuit according to claim 6 or 7, it is characterized in that, described signal processor, also in the effective situation of described second input port, once detect that described first input end mouth is effective, then stops sending motor drive signal to described drive circuit module.
9. a motor driven systems, comprises the control circuit of the electric energy output end connecting power battery pack respectively, power model and drive circuit module, and wherein, described power model connects external communication motor, it is characterized in that:
Described power model is also connected with the electric energy output end of external power source and the electrical energy inputs of described power battery pack;
Described control circuit, when not receiving motor driving request, once receive charge request, then responds described charge request, sends charging signals, charge to control described power model to described power battery pack to described drive circuit module.
10. motor driven systems according to claim 9, is characterized in that, also comprises: pre-charge controller;
Wherein, described pre-charge controller is connected with described control circuit, for after described power model precharge completes, sends described charge request to described control circuit.
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Address after: 545007 Liuzhou Hexi Road, the Guangxi Zhuang Autonomous Region, No. 18 Applicant after: Guangxi company limited of automobile group Applicant after: Liuzhou Wuling Automobile Industry Co., Ltd. Address before: 545007 Liuzhou Hexi Road, the Guangxi Zhuang Autonomous Region, No. 18 Applicant before: Liuzhou Wuling Motors Co., Ltd. Applicant before: Liuzhou Wuling Automobile Industry Co., Ltd. |
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