The series connection type hybrid power system circuit
Technical field
The utility model relates to a kind of hybrid power circuit, especially relates to a kind of series connection type hybrid power system circuit with certain fault-resistant ability.
Background technology
The fuel-economy performance height of hybrid vehicle, and rideability is superior, the driving engine of hybrid vehicle will use fuel oil, and in starting, when quickening, since the auxiliary of electro-motor arranged, thus oil consumption can be reduced, briefly, compare with onesize automobile exactly, fuel cost is lower.And the electro-motor of auxiliary engine can produce powerful power in the moment that starts, and therefore, the car owner can enjoy more powerful starting, acceleration, can also realize the fuel economy of higher level simultaneously.
Development along with the hybrid power technology, the vehicle operating reliability is proposed more and more higher requirement, especially after major failure takes place certain part of hybrid power system, need utilize the other parts function as far as possible to realize for the effective control under the hybrid power system limping pattern.
It is the patent documentation of CN1966303A that State Intellectual Property Office of the People's Republic of China discloses publication number on 05 23rd, 2007, and title is a kind of tandem structure hybrid power system.It mainly comprises electrical generator subsystem G and the rectifying device R that forms the generating link, the drive motor inverter subsystem C of composition motor-driven link and alternating-current motor/AC motor subsystem M, storage battery, output shaft, it is characterized in that it is the three phase alternator of A (A 〉=2) that electrical generator subsystem G adopts the parallel branch number, rectifying device R adopts three phase rectifier in parallel loop or the multiple branch circuit commutating circuit with the electrical generator coupling; Motor subsystem M employing parallel branch number is the three phase alternating current motor of A (A 〉=2) in the motor-driven link, and drive motor inverter subsystem C adopts three-phase inverter in parallel or the many leg inverters that is complementary with alternating-current motor/AC motor.The weak point of this scheme is that automobile must cast anchor when the storage battery et out of order, can not keep and advance.
Summary of the invention
The utility model mainly is to solve the technical matters that automobile can not be advanced after the existing in prior technology storage battery et out of order, and the series connection type hybrid power system circuit that automobile still can move under a kind of situation that electric current can not be provided to electrical motor at storage battery is provided.
The utility model is mainly solved by following technical proposals at above-mentioned technical matters: a kind of series connection type hybrid power system circuit, comprise power generating system, high voltage power battery pack, drive motor controller and drive motor, power generating system is connected with the high voltage power battery pack, the high voltage power battery pack is connected with drive motor controller, drive motor controller is connected with drive motor, and power generating system also is connected with drive motor controller.The high voltage power battery pack is when et out of order or fault level are not low, and series connection type hybrid power system works under the normal operation mode, provides energy by the high voltage power battery pack to drive motor controller, makes drive motor provide power for car load; When major failure appears in the high voltage power battery pack, the controlled limping pattern that enters of series connection type hybrid power system this moment, the vehicle control unit controls power generating system works in the miniwatt generating state, owing to have path between drive motor controller and the power generating system, drive motor utilizes electric energy that power generating system the sends segment distance that still can powered vehicle travels, to realize the purpose of vehicle limp-home.
As preferably, be in series with total positive relay on the positive pole of high voltage power battery pack, be in series with total negative relay on the negative pole.Total positive relay and total negative relay are not in closure state in the high voltage power battery pack when et out of order or fault level are low, make the high voltage power battery pack provide energy for drive motor controller; When major failure appearred in the high voltage power battery pack, total positive relay and total negative relay disconnected, and vehicle enters the limping pattern.
As preferably, power generating system comprises engine system and ISG electric system, and engine system is connected with the ISG electric system, and the ISG electric system is connected with high voltage power battery pack, drive motor controller.ISG(Integrated Starter and Generator), automobile start generating all-in-one.The ISG electric system is that electric energy sends the high voltage power battery pack to the power conversion of engine system during normal the operation, and the ISG electric system directly offers drive motor controller with electric energy under the limping pattern.
As preferably, drive motor controller comprises electric capacity of voltage regulation and inverter, and inverter is connected with high voltage power battery pack, power generating system, is in series with electric capacity of voltage regulation between two input ends of inverter.Inverter is used for direct current (DC) is converted into three plase alternating current, offers drive motor.Electric capacity of voltage regulation carries out voltage stabilizing to the voltage on the drive motor controller bus, guarantees the inverter normal operation.
The beneficial effect that the utility model brings is, can allow Series Hybrid-Power Vehicle continuous firing still under the situation of high-tension battery group et out of order, do not cast anchor, and is convenient to the user car is left to maintenance point, saves the time that waits for rescue car.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model;
Among the figure: 1, power generating system, 2, the high voltage power battery pack, 3, drive motor controller, 4, drive motor, 11, engine system, 12, the ISG electric system, 21, total positive relay, 22, total negative relay, 31, electric capacity of voltage regulation, 32, inverter.
The specific embodiment
Below by embodiment, and in conjunction with the accompanying drawings, the technical solution of the utility model is described in further detail.
Embodiment: a kind of series connection type hybrid power system circuit of present embodiment as shown in Figure 1, comprises power generating system 1, high voltage power battery pack 2, drive motor controller 3 and drive motor 4.Power generating system 1 comprises engine system 11 and the power of engine system 11 is converted into the ISG electric system 12 of electric energy.The mouth of ISG electric system 12 is connected with positive pole, the negative pole of high voltage power battery pack 2.Be serially connected with total positive relay 21 on the positive pole of high voltage power battery pack 2, be serially connected with total negative relay 22 on the negative pole.Total positive relay 21 and total negative relay 22 are subjected to vehicle control unit controls, are closure state under the normal circumstances.Total positive relay 21 and total relay 22 of bearing disconnect when 2 appearance of high voltage power battery pack can not provide electric power than major break down.Drive motor controller 3 comprises electric capacity of voltage regulation 31 and inverter 32, and the input end of inverter 32 links to each other with the mouth of ISG electric system 12 and the positive and negative electrode of high voltage power battery pack 2, and the mouth of inverter 32 links to each other with drive motor 4.Be serially connected with electric capacity of voltage regulation 31 between two input ends of inverter 32.
Specific embodiment described herein only is that the utility model spirit is made casehistory.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment, but can't depart from spirit of the present utility model or surmount the defined scope of appended claims.
Although this paper has used terms such as power generating system, high voltage power battery pack, drive motor morely, do not get rid of the possibility of using other term.Using these terms only is in order to describe and explain essence of the present utility model more easily; They are construed to any additional restriction all is contrary with the utility model spirit.