FIELD OF THE INVENTION

This invention relates to a system and apparatus for discharging of batteries. In particular, the present invention is directed to discharging of batteries when it is installed in an electric vehicle. Still particularly, the present invention is related to control the discharge rate of batteries and supply the power to drive motor to enhance the mileage of Electric vehicles.

BACKGROUND OF THE INVENTION

Presently, most of the automotive vehicles are built with combustion engines and runs with fossil fuels or gases. Electric vehicles which are driven by electrical energy using batteries are considered as alternate solution for replacing the fuel/gas driven cars. Automotive vehicles powered by combustion engines also include alternator and battery. In modern cars, many electrical and electronic loads are present and remain energized by alternator and/or battery. Alternator remains mechanically coupled to the engine and generate electrical energy for powering the electrical/electronic systems connected to it in the vehicle and also charge the battery. The battery is used for starting the engine and to power the electrical system when the alternator is not generating the power or alternator power generation is not sufficient for the electrical / electronic loads. Alternator is used for charging the battery also.

Electric vehicles so-called "zero emission" vehicles are becoming more popular for a variety of reasons. Such vehicles have no emissions of noxious gasses. Electric vehicles which are powered by batteries may present a number of problems or other difficulties to be overcome. In the electric automobile or a hybrid cars, at least one high-voltage battery is mounted, which is a drive source for running the engine, and a battery charger for charging the battery provided. The batteries provided in the cars are has to be charged for certain time period using external power supply.

Another major disadvantage of battery-powered vehicles is, the time required to recharge the batteries. With lithium-ion battery technology, a fully charged EV can travel a distance comparable to an internal combustion engine vehicle with a full tank of fuel or gas, but it still needs to be placed on a recharger at the end of that time. A drained EV will be out of service for several hours before it's fully recharged.

Many patents has disclosed the method of charing the electric vehicles. For example, the U.S. Pat. No. 5,202,617 teaches a fundamental charging station for electric vehicles. There, the electric vehicle battery may be charged either under control of an on-board controller, or the charging operation may be manually controlled. The patent requires a power connector and associated power cable for connecting to the vehicle.

The most obvious advantage of EV is that they do not produce the pollution associated with internal combustion engines. However, they still have environmental costs which is disadvantageous. The electricity used to recharge EV batteries is generated by burning fossil fuels or any other non-renewable energy resources which is a major reason for pollution.

Therefore there must be solution required to avoid the usage of external electricity for charging the batteries. The regeneration of Also, the battery backup so called "Mileage" should be optimized at least with the Combustion engine vehicles. The present invention overcomes the disadvantages present in the existing system and introduces a simple and innovative technology for charging the batteries and running the EV for longer time.

OBJECT OF THE INVENTION

It is thus the basic object of the present invention is to develop a system and method for discharging the batteries provided in electric vehicles.

Another object of the invention is to provide a method and system for the batteries to balance the Depth of discharge to increase the running time of electric vehicles.

Another object of the present invention is to supply the current delivered from the batteries intermittently to the drive motor.

The foregoing and other object, features, aspects, and advantages of the present invention will become more apparent from the following detailed description of the present invention when taken in conjunction with the accompanying drawings.

SUMMARY OF THE INVENTION

Main aspect of the present invention is to develop a system and apparatus for discharging the batteries and supply the power to the drive motor of the electric vehicles.

According to the main aspect of the present invention, an apparatus for discharging the batteries and supply power to the drive motor of electric vehicle comprises; A set of batteries a discharge control device, an Inverter, a transformer, a control unit and a driving means; wherein said discharge control device consists at least one connecting means and timer unit to supply the power alternatively.

A pair of "Primary" batteries and a set of "Auxiliary" batteries are provided the electric vehicle. The batteries may be for example, Lithium-ion, nickel cadmium, nickel metal hydride, lead acid or long chain batteries. The output power from the timer unit is 24V DC current and it is supplied to the Inverter. The Inverter can be made up with a capacity of 1.0 to 6 KVA to produce 220 volt AC current from the 24 V DC power and transfer the current to the transformer. The transformer converts the 220 volt AC current to 48 volt AC and again convert it into 48 volt DC current with specific sign waves and supply to the control unit. The control unit converts the 48 V DC current to 230 watts AC current and supply to the drive motor.

BRIEF DESCRIPTION OF THE DRAWINGS

The above and other aspects, features, and advantages of certain exemplary embodiments of the present invention will be more apparent from the following description taken in conjunction with the accompanying drawings in which:

Fig -1 depicts a representative example of an electrically powered vehicle in accordance with the existing art.
Fig - 2 depicts a system and apparatus to control and supply power to the drive motor in accordance with the present invention
Fig - 3 of the drawings illustrates the schematic diagram of the discharge control unit in accordance with the present invention.

Persons skilled in the art will appreciate that elements in the figures are illustrated for simplicity and clarity and may have not been drawn to scale. For example, the dimensions of some of the elements in the figure may be exaggerated relative to other elements to help to improve understanding of various exemplary embodiments of the present disclosure. Throughout the drawings, it should be noted that like reference numbers are used to depict the same or similar elements, features, and structures.

DETAILED DESCRIPTION OF THE DRAWINGS

The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of exemplary embodiments of the invention as defined by the claims and their equivalents. It includes various specific details to assist in that understanding but these are to be regarded as merely exemplary. The terms and words used in the following description are not limited to the bibliographical meanings, but, are merely used by the inventor to enable a clear and consistent understanding of the invention. Accordingly, it should be apparent to those skilled in the art that the following description of exemplary embodiments of the present invention are provided for illustration purpose only and not for the purpose of limiting the invention as defined by the appended claims and their equivalents.

Figure 1 of the drawings illustrates the schematic diagram illustrated as a representative example of an electrically powered vehicle known in the existing art. A set of batteries (11) are provided in the electric vehicle and connected with each other either in serial or parallel way. The batteries (11) may be for example Lithium-ion, nickel cadmium, nickel metal hydride, lead acid or long chain batteries. The range of the batteries are normally between 6 Volts (V) and 12 Volts. Said batteries (11) are connected with a control unit (13) through connecting means (12). A drive motor (14) is mounted in the vehicle to drive the back or front wheels of the vehicle. Said motor (14) may be for example, a 6 KW induction motor which runs with the aid of electrical power from battery (11). Said Induction motor (14) is coupled with the control unit (13). The control unit (13) receives the current from the set of batteries (11) for example 48 V DC current and converts it to 230 V AC or any other specific requirement by the drive motor (14).

Fig - 2 of the drawings illustrates the schematic diagram illustrating a system (2) including charge/discharge control device in accordance with the present invention. A pair of "Primary" batteries (21) and a set of "Auxiliary" batteries (22) are provided the electric vehicle. The batteries (21, 22) may be for example, Lithium-ion, nickel cadmium, nickel metal hydride, lead acid or long chain batteries. The range of the batteries are 12 Votts. Said batteries (21, 22) are connected with a discharge control unit (24) through connecting means (23). Said control device (24) is connected with Inverter (25). The inverter (25) is coupled with the transformer (26) and said transformer is connected with a control unit (27). Said control unit is coupled with a drive motor (28).

The primary and secondary batteries are connected with the control device (24) to supply the required voltage for example 24 to 48V. The control device (24) supplies the required DC power for example 24V to the Inverter (25) and said Inverter converts the 24V DC power into 220 Volt AC current. The Inverter (25) can be made up with a capacity of 1.0 to 6 KVA. According to the main embodiment of the present invention, the inverter (25) produce 220 volt AC current from the 24 V DC power and transfer the current to the transformer (26). The transformer (26) converts the 220 volt AC current to 48 volt AC and again convert it into 48 volt DC current with specific sign waves and supply to the control unit (27). The control unit (27) converts the 48 V DC current to 230 watts AC current and supply to the drive motor (28).

Figure 3 of the drawings illustrates the schematic diagram of the discharge control device (24) in accordance with the present invention. The wires from the Primary batteries (21) are connected with the connecting means (31) and the wires from the secondary (22) batteries are connected with the connecting means (32) which are provided in the control device (24). The control device also consists a timer unit (33) and output from connecting means (31, 32) are connected with the timer unit (33). The output power from the timer unit (33) is 24 V DC current and it is supplied to the Inverter (25). The Timer unit (33) takes the power supply either from Primary or secondary batteries in a predetermined time interval and supplies to the Inverter. The inverter (25) converts the 24 V DC current into 230 watt AC power and supply to the transformer (26). The transformer converts the 230 watt AC current to DC and step-up to 48 V DC power.

The control unit (27) converts the 48 V DC current into 230 V AC current and supply the power to the Drive motor (28).

The present invention helps to run the Electric vehicle with minimum number of batteries and advantageously increase the running time at least two times than existing. Using the high capacity batteries, the mileage can be increased up to 4 times than existing.

In view of the present disclosure which describes preferred and best modes for providing clearer rollers for textile machines, modifications and variations would present themselves to those skilled in the art without departing from the scope and spirit of this invention. Any modifications and variations coming within the meaning and range of equivalency are considered within the scope.

I CLAIM:

An apparatus for discharging the batteries and supply power to the drive motor of electric vehicle comprises; A set of batteries (21, 22), a discharge control device (24), an Inverter (25), a transformer (26), a control unit (27) and a driving means (28); wherein said discharge control device (24) consists at least one connecting means (31,32) and timer unit (33) to supply the power alternatively.

The apparatus as claimed in claim 1, wherein a pair of "Primary" batteries (21) and a set of "Auxiliary" batteries (22) are provided the electric vehicle.

The apparatus as claimed in claim 1, wherein the batteries (21, 22) may be for example, Lithium-ion, nickel cadmium, nickel metal hydride, lead acid or long chain batteries.

The apparatus as claimed in claim 1, wherein the output power from the timer unit (33) is 24V DC current and it is supplied to the Inverter (25).

The apparatus as claimed in claim 1, wherein the Inverter (25) can be made up with a capacity of 1.0 to 6 KVA to produce 220 volt AC current from the 24 V DC power and transfer the current to the transformer (26).

The apparatus as claimed in claim 1, wherein the transformer (26) converts the 220 volt AC current to 48 volt AC and again convert it into 48 volt DC current with specific sign waves and supply to the control unit (27).

The apparatus as claimed in claim 1, wherein the control unit (27) converts the 48 V DC current to 230 watts AC current and supply to the drive motor (28).