FIELD OF INVENTION
This invention relates to a battery equalizer with inbuilt automatic battery plugging device. More particularly, the present invention provides an intelligent battery equalizer with inbuilt automatic plugging device which works as per the status of the charge of the individual battery.
BACKGROUND & PRIOR ART OF THE INVENTION
Presently, almost all the devices are electrically powered. The power is supplied by one or more portable power sources, such as a battery. Certain devices may use atleast two batteries connected in parallel or series. Often the two or multiple batteries are connected with more than one load, which may draw power from one battery individually or both/ multiple batteries simultaneously.
As electronic devices have become more and more popular, compact, and advanced, they have to rely heavily on batteries for power. Although many electronic devices employ some form of battery-switching device to ensure power is drawn from one battery having the highest voltage in an array of batteries, such switching devices typically require one boost converter for each battery.
Reference may be made to the following prior arts:
Publication No. CN2626772 relates to a DC power supply device, in particular to a car redundant DC power supply device, which comprises a car chassis, two storage batteries therein in automatic connection with a converting circuit board respectively controlled by a battery cell, an electric power switch and a battery cell working indicator light. When the voltage of one storage battery is lower than the minimum rated voltage value of equipment being supplied with

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power, shift to another storage battery for power supply and the battery cell with low voltage is charged by the automobile electric generator, so as to realize load redundant DC power supply in circulation. The utility model has advantages of reliable and stable power supply and prolonged service life of electronic equipment.
US Patent No. 5764032 is related to the multiple battery switchover circuits for selective interconnecting any one of multiple batteries to a load or a charger while maintaining isolation with other batteries of the system. The present invention maintains the required isolation and interconnection capabilities using only three MOSFETs per battery instead of the four required by the prior art.
US Publication No. 2003167415 is directed to an electric apparatus such as a notebook PC (notebook personal computer) and in particular to an electric apparatus to which a charge-discharge battery can be connected. The apparatus stops discharge of a first battery, which is a "sub-battery", and starts discharge of a second battery, which is a main battery, when the temperature of cells of the sub-battery becomes high due to discharge of the sub-battery. That is, an electronic apparatus to which the present invention is applied comprises a first battery for supplying electric power to a main body by discharging after charging thereof; a second battery being comprised of another unit different from the first battery and supplying electric power to the main body; a controller for stopping supply of electric power by the first battery to switch to supply of electric power to said main body by said second battery when said electric power is supplied to said main body under the condition that a temperature of said first battery exceeds a predetermined temperature.

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US Patent No. 7,852,046 and 7,598,711 disclose an apparatus for switching from a first power supply to a second power supply. Such an apparatus may determine which of the first and second power supplies has a greater voltage, and may power a device from the power supply having the greater voltage or charge. A single boost converter may be used regardless of which power supply is providing power.
Publication No. WO2009128081 is related to the circuitry adapted for optimizing battery performance which is connectable to the battery comprising a plurality of battery cells. The circuitry is adapted for interconnecting the battery cells with each other. The circuitry is further adapted for connecting the battery to a charging device and a load.
US Patent No. 7,388,349 is directed to a network controlled multiple battery system. A main battery having a main positive output and a main negative output is also provided, together with an at least one auxiliary battery having an at least one auxiliary positive output and an at least one auxiliary negative output. A main electrical circuit having an at least one switching device is provided with at least two operating positions.
Publication No. WO2011060096 discloses method for operating a battery system having multiple battery packs. The method includes decoupling the output of a discharged battery pack from the vehicle load, reducing the voltage between an output of a charged battery pack and the vehicle load prior to coupling the output of the charged battery pack to the vehicle load.

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Publication No. JP2007124745 pertains a power management system, which Ccin effectively solve the over discharge of a battery, by breaking the current flowing from the battery to a load, in a state that a generator is stopping such as the time of stoppage of a vehicle, etc., and a vehicle.
US Publication No. 20100055546 relates to a multiple battery system for supplying electrical energy to an electrical system having a battery housing with a positive terminal and a negative terminal, wherein the positive terminal and the negative terminal being coupleable to the electrical system. A main battery having a main positive output and a main negative output, the main negative output being electrically connected to the negative terminal is provided. An at least one auxiliary battery is also provided having at least one auxiliary positive output and at least one auxiliary negative output. When the switching device is in the first position, the main battery supplies electrical energy to the electrical system, when the switching device is in the second position the at least one auxiliary battery supplies electrical energy to the electrical system, and wherein the main battery and the at least one auxiliary battery never supply electrical energy to the electrical system simultaneously.
US Publication No. 20050285445 is directed to a method and system for managing a battery system for a vehicle utilizes a hierarchy to disconnect electrical loads from the battery system. One embodiment of the method includes receiving an input signal representative of a condition of one of the components of one of the systems provided in a vehicle. The method also includes comparing the input signal with at least one parameter to determine whether the condition indicates that at least one of the plurality of electrical loads should be disconnected

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from the battery. The method also includes disconnecting at least one of the plurality of electrical loads from the at least one battery according to a predetermined hierarchy if the input signal when compared to the parameter indicates that at least one of the plurality of electrical loads should be disconnected from the at least one battery.
Publication No. EP1914139 relates to a power supply device for a vehicle includes a battery (Bl) which serves as a first power storage device, a battery (B2) which serves as a second power storage device, a vehicle load, a selection switch (RYO) which selects one of the first and second power storage devices and connects the selected power storage device to the vehicle load, and a control device (60) which, when a current flowdng through the selection switch (RYO) is larger than a prescribed value, controls the vehicle load so that the current flowdng through the selection svdtch (RYO) is made smaller than the prescribed value, and switches the selection switch. Preferably, when the control device (60) switches the selection switch (RYO), the control device controls inverters (20, 30) to achieve a balance between electric power generated in a first motor generator (MG2) and electric power consumed in a second motor generator (MGl).
Reference may be made to an article entitled "How do I design a device to automatically switch to the backup battery" by Electrical Engineering, Aug 13, 2010. The article talks about switching to use the next battery when the "in use" battery is completely dead. It keeps track of precisely how much total energy could be extracted from each particular battery, recently it was fully drained which is used (perhaps modified using Peukert's law) to give extremely accurate estimates of future run-time

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Therefore if user desires to run auxiliary load in the secondary storage bank along with the main load, a system is required which can connect the auxiliary load to the highest charge battery as per the requirement and equalize the multiple batteries. Thus conventionsilly no system exists which equalizes the batteries and plugs the highest charged battery to the auxiliary load.
Thus in view of the above prior art, the present invention provides an automatic plugging device inbuilt into the battery equalizer which after detecting the status of the batteries, plugs the battery with highest level of charge, to the auxiliary load.
OBJECTS OF THE INVENTION
Primary object of the present invention is to provide a battery equalizer with inbuilt automatic battery plugging device.
Another object of the present invention is to provide a battery equalizer with inbuilt automatic battery plugging device for automatic plugging of the battery to an auxiliary load.
Yet another object of the present invention is to provide a battery equalizer with inbuilt automatic battery plugging device for automatic plugging of the battery to an auxiliary load as per the state of the charge of the battery.
Still another object of the present invention is to provide a battery equalizer with inbuilt automatic battery plugging device suitable for automobile application.

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Another object of the present invention is to provide a battery equalizer with inbuilt automatic battery plugging device which increases the battery life.
Yet another object of the present invention is to provide a battery equalizer with inbuilt automatic battery plugging device for automatic plugging of the battery to an auxiliary load so as to use different voltage configuration for various applications.
SUMMARY OF THE INVENTION;
The present invention provides a device inbuilt in the battery equalizer for automatic plugging which works as per the status of the charge of the individual battery. The device, after detecting the status of the batteries, plugs the battery with highest level of charge, to the auxiliary load. The equalizer with automatic plugging comprises a controller along with a switching circuit and sensors which senses the battery charge status.
In an embodiment according to the present invention, the secondary storage sources is such as but not limited to the battery, cell, DC source or any other such kind.
In another embodiment according to the present invention, the power backup system is such as but not limited to the UPS, inverter, charger or any other such kind.
In still another embodiment according to the present invention, the charger is such as but not limited to the grid, solar, dynamo or any other such kind.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS;
FYirther objects and advantages of this invention will be more apparent from the ensuing description when read in conjunction with the accompanying drawings and wherein:
Figure 1 shows: exemplary embodiment of first mode configuration of battery equalizer with inbuilt automatic battery plugging device according to the present invention.
Figure 2 shows: exemplary embodiment of second mode configuration of battery equalizer with inbuilt automatic battery plugging device according to the present invention.
DETAILED DESCRIPTION OF THE INVENTION WITH REFERENCE TO THE ACCOMPANYING DRAWINGS;
The present invention discloses a battery equalizer with inbuilt device for automatic plugging of the battery which after detecting the status of the individual battery plugs the battery with highest level of charge, to the auxiliary load.
Now, reference may be made to figure 1 which shows the block diagram in first mode configuration according to the present invention. The system comprises a secondary storage bank 1 connected with the power backup system with charger and DC- AC converter 2 which gives power backup to the main load 3. The bank 1 is connected to the equalizer with automatic plugging 4 which equalizes/ plugs the battery as per the requirement. The secondary storage bank 1 such as but not limited to the battery, DC source for running load is suitable for one of the battery, cell, DC source. The auxiliary load 5 is at the output of the equalizer with automatic

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plugging 4. The equalizer with automatic plugging 4 comprises a controller for controlling equalization of charge and plugging of secondary storage device 1 to run auxiliary load 5. This device is overload and short circuit protected by current limiting protection.
The rectifier charger 6 as shown in figure 2 is connected to the storage bank and is separate from the main equipment 2 (application like automotive vehicle or DC-AC converter or Lighting device with driver etc) which supplies power to the main load 3 (as per application need).
Thus the invention provides the different voltage configuration to be used with different application. The device after detecting the status of the individual secondary source 1, connects the auxiliary load 5 to the source which has highest level of charge. Thus, the secondary storage bank 1 connected in series or parallel-series is applied with the other/ auxiliary load 5.
User can connect auxiliary device through this equalizer such as but not limited to the light, music or video system with these batteries. If one battery of the battery bank is discharged whole battery bank needs to get balanced by plugging the auxiliary device on another battery and simultaneous equalization with uses/charging effectively.
It is to be understood that the above-described embodiments are illustrative of only a few of the many possible specific embodiments, which can represent applications of the principles of the invention. However numerous and varied other arrangements can be readily devised in accordance with these principles by those skilled in the art without departing from the spirit and scope of the invention.

WE CLAIM
1. A battery equalizer with inbuilt device for automatic plugging comprises a secondary storage bank connected with the power backup system with charger and DC- AC converter for power backup to the main load and equalizer with automatic plugging equalizes/ plugs the battery to the main/ auxiliary load as per the requirement wherein said auxiliary load is at the output of the equalizer with automatic plugging.
2. The battery equalizer with inbuilt device for automatic plugging as claimed in claim 1, wherein said equalizer determines which battery has a higher initial voltage and/or state of charger to draw power from that battery.
3. The battery equalizer with inbuilt device for automatic plugging as claimed in any of the preceding claims, wherein said secondary storage sources are such as but not limited to the battery, cell, DC source or any other such kind.
4. The battery equalizer with inbuilt device for automatic plugging as claimed in any of the preceding claims, wherein the power backup system is such as but not limited to the UPS, inverter, charger or any other such kind.
5. The battery equalizer with inbuilt device for automatic plugging as claimed in any of the preceding claims, wherein the charger is such as but not limited to the grid, solar, dynamo or any other such kind.
5. The battery equalizer with inbuilt device for automatic plugging as claimed in any of the preceding claims, wherein the equalizer with automatic plugging comprises a controller for controlling equalization of charge and plugging of the secondary storage device to run auxiliary load.
7. The battery equalizer with inbuilt device for automatic plugging as claimed in any of the preceding claims, comprising of a rectifier charger connected to the storage bank, which supplies power to the main load.

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8. The battery equalizer with inbuilt device for automatic plugging substantially as herein described with reference to the accompanying drawings.
Dated 30'^ day of March, 2012
(SOMA RANI MISHRA) OF L.S. DAVAR 85 CO., APPLICANT'S ATTORNEY