CN85202866U

CN85202866U - Electric driving system for electrically driven vehicles

Info

Publication number: CN85202866U
Application number: CN 85202866
Authority: CN
Inventors: 钱止庵; 钱致疆
Original assignee: Jilin University of Technology
Current assignee: Jilin University of Technology
Priority date: 1985-07-12
Filing date: 1985-07-12
Publication date: 1986-10-15

Abstract

The utility model discloses a power-driven system used for an electric vehicle. Compared with the traditional battery driven system, a prime motor, a power generator and an amperite; due to the function of the amperite, the prime motor is caused to work in the optimum condition; therefore, the optimal energy consumption, the noise and the pollution discharge index can be obtained; the power of the adopted prime motor is smaller than half power of the prime motor of the same-type general automobile, however, the identical dynamic characteristic can be obtained; compared with the traditional battery driven system, the driving range of the power-driven system used for an electric vehicle can be improved by ten times.

Description

Electric driving system for electrically driven vehicles

The invention belongs to the vehicle power class.

The engine installation of general battery-driven car is made up of battery pack, controller and electrical motor.But this device is because its specific energy is lower, has therefore just influenced the continual mileage of electronlmobil greatly.Simultaneously, when battery charge, vehicle just can not travel, because charging duration is longer, the degree of utilization that this has influenced electronlmobil again greatly the present invention is directed to above-mentioned shortcoming, proposed a kind of new electric powerplant that is used for elec. vehicle, its structure as shown in Figure 1.Among the figure, (1) is that electrical motor is in order to powered vehicle; (2) be controller, in order to the mode of operation at control motor; (3) be storage battery, storage battery is in the float type mode of operation among the present invention; (4) be current limiter, its effect is that the variation of electric current that the electrical generator (5) that is driven by primary mover (6) is exported is limited in a designer and gives in the very narrow scope of stipulating earlier, the mouth of the input end sending and receiving motor of this current limiter, the mouth of this current limiter is in parallel with the a/s polarity of storage battery to be the electrical motor power supply by controller jointly.When electrical generator can not satisfy the needs of electrical motor by the current value that current limiter provided, then supply by storage battery, otherwise, if having unnecessary, then can be to storage battery power supply.

Main points of the present invention are can make primary mover be in best mode of operation and select only primary mover for use, this is because the outgoing current of electrical generator is constant substantially as previously mentioned, this output torque that also is equivalent to primary mover is constant substantially, therefore just can select best operation point to allow primary mover work in this state always.In addition, as everyone knows, vehicle for routine, its employed average power only is 30～40% of the engine rated power of being joined, therefore, the primary mover most of the time is in part load condition, this causes energy consumption bigger owing to oil consumption under the part load is very high on the one hand, also caused very big waste owing to can not give full play to the power potentiality of primary mover on the other hand, in the present invention then can be according to actual conditions according to the only primary mover of average use power selection, general its power is not more than 50% of conventional vehicles of the same type, is equipped with suitable battery pack again, then can reach the technical index with conventional vehicles of the same type.

Current limiter can have multiple pattern, and the present invention recommends to use following three kinds of schemes to cooperate dissimilar vehicles.

Scheme 1 as shown in Figure 2, the ac input end series connection back of cond (7) and rectifier (9) is as the input end of current limiter, the dc output end of rectifier is in parallel with battery pack as the mouth of current limiter, the primary mover that be suitable for this moment is the following compact internal combustion engine of power 1.5KW, electrical generator is what match with power of IC engine, 36 volts of following interchange single phase generators of output voltage, the capacity of cond and rectifier can calculate by required electric current, the terminal voltage of battery pack preferably is not more than 12 volts, its maximum supply current is not less than 2 times of current limiter institute current limit, and capacity is not limit.This programme is applicable to the micro-miniature vehicle, and its advantage is that the current limliting original paper is simple and reliable, and cost is low, volume is little, in light weight.

Scheme 2 as shown in Figure 3, after the elementary series connection of cond (7) and voltage transformer (8) as the input end of current limiter, the ac input end of the secondary and rectifier (9) of voltage transformer (8) is connected, and the dc output end of rectifier (9) is in parallel with storage battery as the mouth of current limiter.The primary mover that this programme is suitable for is the compact internal combustion engine of 1.5～5KW, electrical generator exchanges single phase generator for the output voltage that matches with power of IC engine below 220 volts, the terminal voltage of battery pack is not more than 36 volts, its maximum supply current is not less than 2 times of current limiter outgoing current, and capacity is not limit.This programme is applicable to mid-get car, and its advantage is that different taps can obtain different voltages to cooperate different battery pack terminal voltages according to voltage transformer.

Scheme 3 as shown in Figure 4, current limiter is by centrifugal controller (10), silicon controlled rectifier (11), the resistance-type thyristor gating circuit is (by potential device (13), (12), (17), resistance (14), diode (15), stabilivolt (16) constitutes) form, the size of output current value when regulator potentiometer (12) can be adjusted at standard duty, potential device (13) by centrifugal controller (10) automatic compensation so that primary mover be operated in the very little range of speed of variation, also available other form of thyristor gating circuit, but all should there be the tach signal of primary mover to control the silicon control outgoing current as inverse feedback, what this figure selected for use is half-wave rectifying circuit, also can make full-wave rectifying circuit.

This programme is specially adapted to the city with roadlice and city motor bus, also can be used for the vehicle of other type, and its advantage is that volume is little, in light weight, running is stable, but working service requires to have higher technical merit.

The primary mover that matches with scheme 3 is the combustion engine of power in 3～100KW scope.Electrical generator can be with the alternating current generator that matches with original machine power, single-phase and three-phase all can, if select three-phase generator for use, then can adopt 3 covers current limiter as shown in the figure, the output voltage of electrical generator should be below 380 volts, the battery pack terminal voltage that is in parallel with it should be below 110 volts, and capacity is not limit.

In addition, the current limiter of scheme 3 also can add a cover control circuit by large power triode to be made, and electrical generator at this moment with matching can be selected dynamo generator for use, and its output voltage should be below 110 volts.

The invention has the advantages that and adopt the vehicle of this cover engine installation to come than increasing continual mileage greatly with existing elec. vehicle, with the micro-miniature car is example, generally this type of middle-grade running distance of eletric vehicles is all below 100 kilometers, as long as and adopt vehicle of the present invention to have 5 liters of fuel that continual mileage is reached more than 500 kilometers, this is difficult to reach at conventional elec. vehicle.In addition, behind employing the present invention, also much smaller to the capacity requirement of storage battery, this just makes elec. vehicle that bigger transport capacity is arranged.

Claims

1, a kind of electric propulsion system that is used on the elec. vehicle is made up of an electrical motor [1], controller [2], storage battery [3].It is characterized in that having a current limiter [4] and an electrical generator [5] that is driven by primary mover [6].

2, according to the described electric propulsion system of claim 1, it is characterized in that the input end connecting generator (5) of said current limiter (4), the mouth of current limiter is in parallel with storage battery (3).

3, according to claim 1 or 2 described electric propulsion systemes, it is characterized in that said current limiter is made up of a cond (7) and a rectifier (9), also can form, so that satisfy the requirement of the different voltages of output by between cond and rectifier, adding a voltage transformer (8).

4,, it is characterized in that said current limiter (4) is made up of centrifugal controller (10), silicon controlled rectifier (11) and potential device (12), (13), (17), electricity group (14), diode (15), stabilivolt (16) according to claim 1 or 2 described power power drive systems.