JPS586002A - practical electric car - Google Patents

Abstract

PURPOSE:To reduce the power consumption of a practical electric vehicle by utilizing the coasting force of a motor by opening or closing a switch provided between a battery and the motor. CONSTITUTION:When a switch 2 is closed, the total voltage of a battery 1 is applied to a DC motor 3, and an electric vehicle will start. When the speed reaches the prescribed value, the switch 2 is opened, allowing the motor to rotate by a coasting force. When the speed is further decelerated, a brake is applied, on the contrary when the speed is accelerated, the switch 2 is closed.

Description

[Detailed Description of the Invention] Ever since electric cars were created, even today, all electric cars have a controller between the battery and the motor.
It is like driving by performing speed conversion. There are various theories and structures for this controller, but all of them have a large voltage drop in that part, which wastes power and deteriorates the performance of electric vehicles, which is the biggest cause of slowing down the development of electric vehicles. It becomes. The present invention is an improvement on this.

In the figure, 1 is a battery, 2 is a switch, 4 is a controller, and 3 is a motor.

According to the conventional system, as shown in Fig. 1, 40 controllers switch the voltage into several stages, or insert several resistances to adjust the voltage and convert the speed of the vehicle. As a result, the electric circuit from the battery to the motor becomes longer and there are more contacts, and the large current when the train starts causes a large voltage drop at the electrical wire contacts, etc., and the voltage applied to the motor decreases, causing the motor to rotate. Not only will the performance of the car deteriorate as the power decreases, but the limited amount of power stored in the battery will become even smaller as the excess power is used up, making it difficult for the electric car to continue charging. By increasing the distance, electric cars are dealing a decisive blow. However, according to the present invention shown in FIG. 2, since there is no controller, when the switch is turned on when starting the train, the full voltage of the battery is applied to the double-wound DC motor, and the train starts powerfully and accelerates quickly. If the speed is too fast, immediately turn off the switch and the motor will rotate by inertia, and if you want to reduce the speed further, press the switch pedal firmly.
The motor brake is applied, and if you press harder, it will stop, so you can change the speed at will by operating the switch, and
If the switch is turned off and the motor is running by coasting, or if the speed is increased, when the switch is turned on, the current from the battery will be smaller as the motor is coasting, thus increasing the battery capacity and reducing power consumption. This is achieved by making effective use of the discharge characteristics of lead batteries, and this increases the charging distance by measuring power consumption in actual vehicles. This is clear from the results.

As is clear from the above explanation, the present invention not only reduces manufacturing costs by removing the controller, but also simplifies the power circuit of the electric car and allows the battery to be made smaller, making the electric car lighter as a whole. This can greatly reduce production costs.

In addition, operating costs are also reduced due to reduced power consumption, so
There is a great deal that can be done to increase the value of electric cars and contribute to their development.

[Brief explanation of drawings]

Figure 1 is a wiring diagram from the battery to the motor of electric cars currently in use. FIG. 2 is a wiring diagram from the battery to the motor of the electric vehicle according to the present invention. 1 is a battery, a 2-piece start switch, a 3-piece motor, and a 4-piece controller. Patent applicant Takashi Konfuji

Claims (1)

[Claims] A practical electric vehicle for urban use that is equipped with a switch between the battery and the motor, which opens and closes the circuit and utilizes the inertia of the motor to operate the vehicle.