CN101944761B - Integrated-type charging and motor control system - Google Patents
Integrated-type charging and motor control system Download PDFInfo
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- CN101944761B CN101944761B CN 201010210740 CN201010210740A CN101944761B CN 101944761 B CN101944761 B CN 101944761B CN 201010210740 CN201010210740 CN 201010210740 CN 201010210740 A CN201010210740 A CN 201010210740A CN 101944761 B CN101944761 B CN 101944761B
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Abstract
The invention relates to an integrated-type charging and motor control system with a charging function, comprising a power control module (4) which is formed by sequentially connecting a power battery pack (1), a motor controller (2) and a power motor winding (3), wherein the motor controller (2) is used for converting the DC electric energy of the power battery pack (1) into energy needed by the power motor winding (3); and a power supply module (5) connected with the power control module (4) is used for converting the AC of a power grid (6) into DC when connecting with the external power grid (6), transmitting the DC to the power motor winding (3) and charging the power battery pack (1) under the control of the motor controller (2). The invention reduces the resource waste, simultaneously is beneficial to the arrangement and the optimization of an integral vehicle, also lightens the load of a vehicle body and enhances the utility ratio of kinetic energy.
Description
Technical field
The present invention relates to the motor control assembly of a kind of plug-in hybrid-power automobile or pure electric vehicle, especially a kind of integrated form charging and electric machine control system that has charge function simultaneously.
Background technology
Orthodox car is low to degree of dependence height, the utilization ratio of petroleum-based energy.15% the fuel oil energy of only having an appointment in orthodox car is used effectively, and all the other major parts are lost.And estimate that according to explored world oil total storage capacity global petroleum resources only can use about 60 to 100 years for human.China's automobile annual production at present surpasses 1,300 ten thousand, and automobile is possessed total amount above 7,000 ten thousand.The growth at full speed of automobile volume of production and marketing directly causes continuing to increase of the external dependency degree of China's oil.The crude oil in China total amount consumed was 3.70 hundred million tons in 2008, and the external interdependency of oil reaches 48.7%.And in Copenhagen the United Nations climate change Great Council on the-18th 7 days in December, 2009 of holding recently, the serious promise of China reaches the 45%-50% in 2005 years to the CO2 emissions of the year two thousand twenty China.As seen, improve vehicle fuel oil utilization ratio, to reduce or eliminate auto industry be the urgent task of the countries concerned's economic security and energy security to the dependence of petroleum resources.Electric motor car possesses and does not rely on fossil fuel, and energy sources is extensive, and pollutant effulent is few in the use, and advantage that can balance electricity paddy is the direction that develops at present and in the future.
Electric motor car (EV) is divided into two kinds of pure electric automobile (BEV) and hybrid vehicles (HEV); Be subjected to the influence of electrokinetic cell capacity, there is the short problem of continual mileage in pure electric automobile, though battery technology in continuous progress, can not match in excellence or beauty with the fuel vehicle of routine aspect continual mileage and the energy supplement eventually.HEV can be divided into according to degree of mixing classification: littlely mix, in mix, mixed plug-in hybrid car (Plug-in HEV) entirely, possess that pure electricity travels, idle stop, electricity is auxiliary and function such as energy recuperation, the purpose of zero discharge in the time of can realizing low speed, energy-saving and emission-reduction and synergy when quickening; Especially Plug-in HEV possesses the external charge function, can satisfy the requirement that general people travelled in a day after being full of electricity, the volt hybrid vehicle of AM General company exploitation for example, pure electric distance travelled can reach the 64 kilometers requirements that can satisfy the above one day travelling radius of American 80%, can utilize the electric energy charging more than needed of electric paddy at night, therefore be the direction of current and Future Development; Can imagine that people's travel mode should be defined as excursion dependence BEV in the future, long-distance travel relies on Plug-in HEV.
BEV still is that Plug-in HEV faces the charging problem, can be divided into interchange quick charge and direct current quick charge at present on the quick charge mode, the direct current quick charge is to utilize the ground charging device that the alternating current of AC network is converted into the process that is fit to the needed voltage and current of power battery of electric vehicle group; AC charging is to give the power supply of vehicle-mounted charge machine with the alternating current of electrical network through connector and charging jack, is converted into the process of the needed voltage and current of battery pack then through the vehicle-mounted charge machine.
In the Vehicular charging process, vehicle and charging system are connected, make locking vehicle in the charging process, the action of travelling that vehicle is produced do not expect in charging process; And for the versatility that guarantees charging device need be set up communication (generally finishing by the CAN bus) between DC charging equipment and vehicle, and the communication between unified charger and the different car load manufacturing enterprise, just need the open relevant communications protocol of relevant unit, this implements is the comparison difficulty; AC charging mode by the vehicle-mounted charge equipment charge does not then need, as long as establish a mechanically controlled switch (control guiding) on the charging jack, so versatility is stronger; And DC charging equipment need manage concentratedly in charging station, if as the facility that resembles gas station and so in the planning of the inside, city, can't satisfy the requirement of the so high charging frequency of electric motor car, and the electric power facility investment is huge; Therefore DC charging equipment only is suitable for the electric bus that possesses route and electrically-charging equipment; And as the passenger car of walking-replacing tool, should adopt interchange to fill the mode that combines with the family trickle charge soon, exchanging to fill soon and possess take up room little, investment and advantage easy to implement, can build in the roadside, public places such as parking lot, supermarket, is the most feasible scheme.
In the AC charging mode, the general common charging socket charging that in electric motor car, is provided with independent charger dependence charging pile and family, traditional charger comprises that rectification circuit, full-bridge conversion module, transformer, secondary rectification module and a power battery pack connect to form in turn, become direct current from the alternating current of electrical network after through a rectification circuit, be transformed to alternating current through the full-bridge conversion module then, boost, after the rectification of secondary rectification module, the direct current that obtains flowed to power battery pack realize charging through transformer.Yet employing technique scheme, charger need take installing space as independent car load parts, and need to consider the charger heat radiation, EMC, problems such as NVH, secondly, with regard to the charger of present 3KW, need about 4000 yuan cost, and the input current of vehicle-mounted charge machine is according to home-use 220V at present, the 16A design, charging interval was greater than 6 hours, if the standard of employing three-phase 380V, the jack design charger of 32A, the rated power of charger can be designed into 18KW, 20 minutes 30-40 kilometers that can travel charge, can reach the requirement of quick charge, but the volume of charger, weight and cost all can increase considerably, and inevitably occur heat radiation simultaneously, EMC, problems such as NVH.
Existing drive system of electric motor vehicle is by power battery pack, electric machine controller and power motor winding are formed, electric machine controller is converted into the required square wave of motor (dc brushless motor) with the direct current energy of power battery pack, sinusoidal wave (permanent-magnet synchronous, AC induction motor), motor outputting power powered vehicle is travelled, and the AC energy that produces in the motor power regeneration processes can be converted into the charging of direct current realization to power battery pack, and possesses perfect heat radiation, EMC, the NVH solution, and general electric machine controller capacity is all more than 20KVA, if have intimate two complete equipments (charger and motor control module) on same the car simultaneously, obviously have the waste on the resource.
Summary of the invention
For solving the deficiencies in the prior art, the invention provides a kind ofly based on motor and controller, integrate, make it when having the two function concurrently motor and controller and charger, can effectively solve the integrated form charging and the electric machine control system of charger heat radiation, EMC, NVH problem.
For achieving the above object, integrated form charging of the present invention and electric machine control system, comprise by power battery pack, the power train control module that electric machine controller and power motor winding are linked in sequence and form, described electric machine controller is converted into the required energy of power motor winding with the direct current energy of power battery pack, travel with powered vehicle, and by control realization discharging and recharging to power battery pack to voltage and current, this system also comprises the supply module that links to each other with power train control module, this supply module is when connecting external electrical network, the alternating current of electrical network is converted into after direct current flows to the power motor winding, under the control of electric machine controller, power battery pack is charged.
Concrete, above-mentioned supply module is rectifier (as a VU036-16N08 three-phase silicon bridge comparatively commonly used at present etc.).
In addition, the further improvement as aforesaid way is in series with inductance L between motor windings and rectifier.
Above-mentioned line voltage is a kind of in single-phase voltage (220V) or the three-phase voltage (380V).
Adopted technique scheme, because on the basis of prior motor and controller, set up supply module, when this supply module is connected with external electrical network, realized charge function to power battery pack, make motor and controller and charger integrated design, when reducing the wasting of resources, help the layout and the optimization of car load, alleviated the heavy burden of vehicle body simultaneously, improved the utilization ratio of kinetic energy, and integrated form of the present invention charging and electric machine control system possessed the effect of existing motor and controller, the heat radiation that has promptly effectively solved charger, EMC, problems such as NVH; Owing to adopted the rectification and the motor windings of motor and controller, its load capacity is much larger than the power supply capacity of power-supply system, adopt three phase rectifier can improve the charging current of system greatly, rectifier diode power grade to rectification circuit is less demanding, and can satisfy the requirement that single-phase trickle charge of family and three-phase dash soon simultaneously, under the enough big situation of battery capacity, can realize 20 minutes vehicle ' 20-40 of quick charge kilometer.
Description of drawings
Below in conjunction with the drawings and the specific embodiments the present invention is done further to describe in detail:
Fig. 1 is prior motor and controller circuitry schematic diagram;
Fig. 2 is the circuit theory diagrams of first kind of execution mode of the present invention;
Fig. 3 is the circuit theory diagrams of Fig. 2 motor windings charging process;
Fig. 4 is the circuit theory diagrams of Fig. 2 battery charging process;
Fig. 5 is the circuit theory diagrams of second kind of execution mode of the present invention;
Fig. 6 is a current path schematic diagram shown in Figure 3;
Fig. 7 is a current path schematic diagram shown in Figure 4.
Embodiment
By prior motor shown in Figure 1 and controller circuitry schematic diagram as can be known, existing drive system of electric motor vehicle is connected to form in turn by power battery pack 1, electric machine controller 2, power motor winding 3, electric machine controller is converted into required square wave of motor (dc brushless motor) or sine wave (permagnetic synchronous motor, AC induction motor) with the direct current of power battery pack, and the AC energy that produces in the motor power regeneration processes can be converted into direct current be power battery pack charging.
Embodiment one
By as can be known shown in Figure 2, integrated form charging of the present invention and electric machine control system, comprise the power train control module 4 that is linked in sequence and forms by power battery pack 1, electric machine controller 2 and power motor winding 3, electric machine controller 2 is converted into the required energy of power motor winding 3 with the direct current energy of power battery pack 1, and conducting that can be by switch in the IGBT module with turn-off control and realize the control that charges and discharge voltage and current power battery pack 1; Supply module 5 links to each other with power molding piece 4, and at this moment, supply module 5 is a rectifier 7, and rectifier 7 links to each other with external electrical network 6.Electrical network 6 can adopt single-phase 220V power supply or three-phase 380V power supply.
When electrical network adopts single-phase 220V power supply, U
d=0.9 * U
2=0.9 * 220=198V
When electrical network adopts three-phase 380V power supply: U
d=1.17 * U
2=1.17 * 220=257.4V
In the following formula, U
dBe the output voltage behind rectifier, U
2Be line voltage.
When rectifier 7 does not link to each other with external electrical network 6, promptly not to power battery pack charging, when vehicle is in motoring condition, the direct current energy of power battery pack 1 flows to electric machine controller 2, IGBT module controls K1, K2, K3, K4, K5, replacing of K6 through electric machine controller 2 are changed, the direct current of input is converted to power motor winding 3 needed square waves (dc brushless motor) or sine wave (permagnetic synchronous motor, AC induction motor), owing to when rectifier 7 does not link to each other with external electrical network 6, do not participate in work so be in off-state.
By as can be known shown in Figure 3, arrow schematically illustrates path of current among the figure, connects electrical network 6 this moment, and motor windings is in charging process, and IGBT module controls K2, K4 open, and K1, K3, K5, K6 disconnect, and current path as shown in Figure 6.
This moment, motor windings produced back-emf, U
L=U
dGesture, direction and current opposite in direction.
By as can be known shown in Figure 4, arrow schematically illustrates path of current among the figure, and connect electrical network 6 this moment, and in the battery charging process, IGBT module controls K2, K4 disconnect shown in the figure, and K1, K3 open, and current path as shown in Figure 7 at this moment.
Owing to the afterflow effect of inductance, motor windings produces the induced voltage identical with the sense of current when K1 and K3 disconnection, the charging voltage of battery: Ub=Ud+UL,
Wherein Ud belongs to constant, and UL is a variable
L is the inductance of motor, and ω is the angular speed of electrode;
Just the IGBT module controls switching frequency with controller is relevant with charging interval of motor windings, that is to say by control U
LRealize the adjusting of battery charging voltage.
Embodiment two
By as can be known shown in Figure 5, present embodiment and embodiment one difference are to be in series with inductance L 8 between motor windings 3 and rectifier 7.
Adopt technique scheme, be because different vehicles adopts different design of electrical motor schemes, so the induction reactance of motor windings is also inequality, therefore, series connection one inductance L 8 to be increasing its induced electromotive force between motor windings U and Z+, thereby improves the efficient and the voltage characteristic of system.
The operation principle of present embodiment is identical with embodiment one.In addition, when the charging system voltage request was low, switch that also can be by electric machine controller K5, K6 and inductance worked independently and realize, are specially:
The charging of power motor winding:
Electric current is from rectifier Z+ → inductance 8 → K6 → Z-
The power battery pack charging:
Electric current is from rectifier Z+ → inductance 8 → K5 → Ub+ → Ub-→ Z-
Obviously, those skilled in the art can carry out various changes and distortion and not break away from the spirit and scope of the present invention integrated form of the present invention charging and electric machine control system, like this, if of the present invention these revise and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and is out of shape interior.
Claims (2)
1. an integrated form charges and electric machine control system, comprise the power train control module (4) that is linked in sequence and forms by power battery pack (1), electric machine controller (2) and power motor winding (3), described electric machine controller (2) is converted into the required energy of power motor winding (3) with the direct current energy of power battery pack (1), travels with powered vehicle; And the direct current that supply module (5) can be produced is by control realization the discharging and recharging power battery pack (1) of electric machine controller (2) to voltage and current, it is characterized in that: supply module (5) is when connecting external electrical network (6), the alternating current of electrical network (6) is converted into after direct current flows to power motor winding (3), to power battery pack (1) charging, described supply module (5) is a rectifier under the control of electric machine controller (2); Between motor windings (3) and rectifier (7), be in series with inductance L (8).
2. integrated form according to claim 1 charging and electric machine control system is characterized in that: described electrical network (6) power supply is a kind of in single-phase or the three-phase.
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| CN 201010210740 CN101944761B (en) | 2010-06-28 | 2010-06-28 | Integrated-type charging and motor control system |
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| CN 201010210740 CN101944761B (en) | 2010-06-28 | 2010-06-28 | Integrated-type charging and motor control system |
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| CN101944761A CN101944761A (en) | 2011-01-12 |
| CN101944761B true CN101944761B (en) | 2013-07-31 |
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| KR101273736B1 (en) * | 2011-03-18 | 2013-06-12 | 엘에스산전 주식회사 | Inverter-charger conversed device for electric vehicles and method for controlling thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2614396Y (en) * | 2003-05-13 | 2004-05-05 | 蒋贞荣 | Three-phase UPS made up of frequency-converter and accumulator |
| CN1696037A (en) * | 2000-02-28 | 2005-11-16 | 三菱电机株式会社 | Elevator Control |
| CN1911705A (en) * | 2005-08-08 | 2007-02-14 | 丰田自动车株式会社 | Power supply device for vehicle and method of controlling the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1696037A (en) * | 2000-02-28 | 2005-11-16 | 三菱电机株式会社 | Elevator Control |
| CN2614396Y (en) * | 2003-05-13 | 2004-05-05 | 蒋贞荣 | Three-phase UPS made up of frequency-converter and accumulator |
| CN1911705A (en) * | 2005-08-08 | 2007-02-14 | 丰田自动车株式会社 | Power supply device for vehicle and method of controlling the same |
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