JPS586045A - Vehicle charger - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] When charging a lead-acid battery electric vehicle, it is necessary to adjust the charging current due to changes in the charging time, the amount of discharge, and the final charging voltage depending on the age of use. The required charging current is obtained by adjusting the voltage. Furthermore, since it requires rapid replenishment charging, it is more difficult to charge than ordinary batteries.
Because the current flows through the battery, a large transformer is used, making the entire charger large and heavy. Therefore, it is impossible to carry this charger in a car. Therefore, a separate charging station is set up and a charger is installed. This is the same in all countries around the world. Therefore, in order to use lead-acid battery electric cars effectively and safely, it is necessary to build a replenishment charging station in the city, but since dozens of large LJS type chargers are installed at the charging station, the area is also large. , the construction cost would be too high and it would be impossible to realize it. The biggest drawback of lead-acid battery electric cars is that the range per charge is short, and to compensate for this drawback, VC
The only option is to set up many charging stations throughout the city, but this is not possible due to the large size of the chargers, making the development of lead-acid battery electric vehicles extremely difficult. The present invention is an improvement on this.

In the figure, 1 is a battery group as a power source, 2 is its anode terminal, 3 is its cathode terminal, 4 is a rectifier, 5 is a series resistor, a charging plug attached to a 6-wheel vehicle, and 7 is a charge/discharge switch. , 8
is a changeover switch for short-circuiting 5, and 9 is a circuit wire.

For example, an electric car with 100 ampere-hour batteries that is charged from a Holt AC power supply has 36 batteries and 72 volts. That is, the open circuit voltage between 2 and 3 is 72 volts. 100 volt AC mains power supply [When plug 6 is inserted, switch 8 is turned on, and charge/discharge switch 7 is set to the charging side, the battery voltage will rise to around Z15 per battery, so the voltage of 2 and 3 will be approximately 77 volts. If you add the voltage of 18 ports required for rectifying the fluid, it becomes 95 volts, and the difference from the 100 volts of the power source is about 5 volts, which allows high current constant voltage charging depending on the discharge state of the battery, and it can be attached to a car. By looking at the amount of charge indicated by the capacitance meter, and pulling out plug 6 at the required amount of charge, the required amount of charge can be achieved with the current curve shown in FIG. In addition, if you want to fully charge at night, you can turn off the switch 8, insert the resistor 5 in the garage, and perform quasi-constant voltage charging, and the current shown in the curve in Figure 2 will fully charge the battery. I can do it.

Now, if you want to perform quick replenishment charging during the day, turn on switch 8, short circuit 5, and insert plug 6.
When a battery is partially discharged, a large current of about 300 amperes flows through the battery for 5 minutes to charge the battery to about 30%, and for 15 minutes to charge the battery by approximately 30%.

Since this device does not have a charging reservoir regulator or a transformer, only a fluid regulator, the overall volume is small, it is lightweight, and it can be easily installed in a car. Therefore 10
Since it can be charged anywhere as long as there is a 0V (or 200 volt) power source, the battery installed in the car can be small, which reduces manufacturing costs, reduces operating costs, and allows you to use it with peace of mind without worrying about it stopping mid-way. This technology eliminates the drawbacks of lead-acid battery electric vehicles and increases their overall value.In addition, construction costs are extremely low because all you need to do to charge the battery is to wire it from the power company and install an outlet. It can be installed in any suitable place on the stand. As a result, this device will expand the uses of electric cars and contribute to their development.
It has various effects.

[Brief explanation of drawings]

FIG. 1 is an electric circuit connection diagram of the present invention. FIG. 2 is a charging current curve diagram for complete charging at night. □ FIG. 3 is a charging current curve diagram for quick charging during the day. 1 is a power source battery, 2 is an anode terminal, 3 is a cathode terminal, 4 is a rectifier, 5 is a series resistor, 6 is a charging plug,
7 is a charge/discharge changeover switch, 8 is a switch for short-circuiting 5, and 9 is a circuit wire. Patent applicant Takashi Konfuji

Claims (1)

[Claims] In a lead-battery electric vehicle, the number of batteries used as a power source is 36 or 72, and the number of batteries is 1o. An in-vehicle charging device that converts a volt AC power source or a 200 volt AC power source into DC through only a rectifier, and performs high-current rapid charging without using a regulator.