BATTERY CHARGER TO PREVENT DRAINAGE OF BATTERY

TECHNICAL FIELD

[0001] The present disclosure, in general, relates to battery charger, and, more particularly, to a battery charger for batteries provided in lift equipment, vehicle, and household having Resistor- Capacitor (RC) filter to avoid ripple factor.
BACKGROUND
[0002] Background description includes information that may be useful in understanding the present disclosure. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed subject matter, or that any publication specifically or implicitly referenced is prior art.
[0003] Batteries are provided to supply power in the absence of main supply. Further, the batteries are provided at various places, such as lift equipment, vehicle, and household. The batteries are charged by a charger that convert the AC power into DC power where DC power is stored in the battery.
[0004] For example, lift equipment is provided to lift and place the material, specifically, steel sheets, billets from one place to another with electric magnets. The electric magnets get supply from the alternator and auxiliary battery. The auxiliary battery supplies power in the absence of main supply. Therefore, it is required that auxiliary batter should remain charged all the time. The auxiliary battery is charged by a charger that receives power from the alternator and convert the AC power into DC power. Further, the alternator provides power when the lift equipment is working. During shut down or non-working condition of the lift equipment, there is no charging activity is happening between the alternator and battery. The charger or battery charger has a resistor-capacitor filter (R2, R5) to filter the incoming current to provide clean supply to battery. The RC filter avoid ripple in the battery input and increases battery life and efficiency. Further, the RC filter provides pure DC power into the battery.
[0005] Technical problem: Conventionally, the RC filter always remain in contact with battery. The RC filter has resistance that consumes power from the battery. Therefore, when the lift equipment or vehicle is not working means alternator is not supplying power to the battery charger, the RC filter continuously consumes power from the battery and ultimately drain-out the complete battery in few hours.
[0006] In a case where the battery is completely drain-out and the lift equipment requires auxiliary power supply from the auxiliary battery, the electric magnets will not work and drops the steel sheets or billets. Sudden fall of the hold material causes a serious accident at work site.
[0007] Further, drainage of battery in the absence of input power supply itself is a major technical issue. The present technical problem exists in all batteries having their application in vehicle and houses.
[0008] Accordingly, it will be apparent to the skilled artisan that there exists a need in the state of the art in the art to avoid drainage of battery in the absence of power supply.

OBJECTS OF THE DISCLOSURE
[0009] Some of the objects of the present disclosure, which at least one embodiment herein satisfy, are listed hereinbelow.
[0010] It is a general object of the present disclosure to provide an improved battery charger for avoiding drainage of battery during non-working condition.
[0011] It is an object of the present disclosure to provide a battery charger that provides mechanism for connection between input supply and battery during charging only.
[0012] These and other objects and advantages will become more apparent when reference is made to the following description and accompanying drawings.
SUMMARY
[0013] This summary is provided to introduce concepts related to a battery charger to avoid drainage of battery in idle conditions. The concepts are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.
[0014] In an embodiment, the present disclosure relates to a battery charger for preventing drainage of battery during idle condition or non-working condition. The battery charger is connected with AC supply unit, such as alternator at one end and with the battery at other end. The battery charger converts the AC input into DC output for storage in the battery. The battery charger includes a Resistor-capacitor (RC) filter to avoid ripple in the output of the battery charger and a contactor (M). The contactor (M) has normally-open contacts (N/O) and provided in between input terminals (L1, L2) and output terminals (TB2+, TB2-) of the battery charger. The contactor (M) receives power from at the input terminal (L1, L2) to energize coil of the contractor (M), wherein the energized coil of the contractor (M) closes the normally-open contacts (N/O) to make a connection between the output terminal (TB2+, TB2-) of the battery charger and the battery.
[0015] In an aspect, the contactor (M) is energized by supply of the AC input.
[0016] In an aspect, the normally-open contacts (N/O) remain closed when the contactor (M) is energized by continuous supply of the AC input.
[0017] Various objects, features, aspects, and advantages of the inventive subject matter will become more apparent from the following detailed description of preferred embodiments, along with the accompanying drawing figures in which like numerals represent like components.

BRIEF DESCRIPTION OF THE DRAWINGS
[0018] The illustrated embodiments of the subject matter will be best understood by reference to the drawings, wherein like parts are designated by like numerals throughout. The following description is intended only by way of example, and simply illustrates certain selected embodiments of devices, systems, and methods that are consistent with the subject matter as claimed herein, wherein:
[0019] FIG. 1 illustrates a circuit diagram of a battery charger, in accordance with an embodiment of the present disclosure.

DETAILED DESCRIPTION
[0020] The detailed description of various exemplary embodiments of the disclosure is described herein with reference to the accompanying drawings. It should be noted that the embodiments are described herein in such details as to clearly communicate the disclosure. However, the amount of details provided herein is not intended to limit the anticipated variations of embodiments; on the contrary, the intention is to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the present disclosure as defined by the appended claims.
[0021] It is also to be understood that various arrangements may be devised that, although not explicitly described or shown herein, embody the principles of the present disclosure. Moreover, all statements herein reciting principles, aspects, and embodiments of the present disclosure, as well as specific examples, are intended to encompass equivalents thereof.
[0022] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms “a”, “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises”, “comprising”, “includes” and/or “including,” when used herein, specify the presence of stated features, integers, steps, operations, elements and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components and/or groups thereof.
[0023] It should also be noted that in some alternative implementations, the functions/acts noted may occur out of the order noted in the figures. For example, two figures shown in succession may, in fact, be executed concurrently or may sometimes be executed in the reverse order, depending upon the functionality/acts involved.
[0024] Unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which example embodiments belong. It will be further understood that terms, e.g., those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.
[0025] Figure 1 illustrate circuit diagram of the battery charger to avoid or prevent drainage of battery in idle condition or non-working condition. The Resistor-Capacitor (RC) filter (R2, R5,) provided in the battery charger to filter the input voltage and provide pure Direct Current (DC) without ripple to the battery coupled to output terminals (TB2+, TB2-) of the battery charger. Further, configuration of inductance, transformer, capacitance and registers are well known to a person skilled in the art. Therefore, to avoid ambiguity and to clearly illustrate the present subject matter, the description describe only those features and components where modification and inventive concept is provided. Further, construction of the battery charger is conventional apart from present inventive modification in the circuit. During idle condition or non-working condition, the RC filter always remain in contact with the battery and consumes power of the battery due to resistance and drain-out the complete battery in few hours.
[0026] Therefore, the technical objective of the present subject matter is to disconnect the RC filter with the battery during non-working or idle condition when the battery charger is not supplying or charging the battery.
[0027] Fig. 1 illustrate circuit of the battery charger having a contactor (M) that is coupled with input terminals (L1, L2) and output terminals (TB2+, TB2-) of the of the battery charger. The output terminals (TB2+, TB2-) of the of the battery charger are connected with the battery to supply filter or pure DC for storage. The Contactor (M) has normally-open (N/O) contacts at the output terminals (TB2+, TB2-) of the of the battery charger. The contactor (M) receives AC power at the input terminal (L1, L2) to energize coil of the contractor (M). Further, the energized coil of the contractor (M) closes the normally-open contacts (N/O) to make a connection between the output terminal (TB2+, TB2-) of the battery charger and the battery.
[0028] Case 1: Working condition.
[0029] When the battery charger is receiving AC input, the contactor (M) receives AC input from the input terminals (L1, L2) and energize coil of the contactor (M). Upon energization, the coil of the contactor (M) closes the normally open (N/O) contacts provided at the output terminal end to make a connection between the output terminals (TB2+, TB2-) and the battery. Once the connection is setup, the battery charger can charge the battery with filtered DC output.
[0030] Case 2: Idle condition or non-working condition
[0031] When the battery charger is idle means not receiving AC input from the power source, such as alternator or AC mains, the coil of the contactor (M) does not get energized and the normally open (N/O) contacts remains opened. Therefore, no connection is setup in between the output terminals (TB2+, TB2-) of the battery charger and the battery. Accordingly, the battery remains isolated from the battery charger and resultantly from the RC filter. If there is no connection between RC filter and the battery, there would be no drainage of power from the battery.
[0032] In an aspect, the contactor (M) can be replaced by a relay.
[0033] In an aspect, construction of the contactor (M) is well known. The contactor is electromagnetic device having coil, spring and electromagnet.
[0034] In an aspect, the contactor (M) has normally opened (N/O) contacts that become closed upon energization by AC supply.
[0035] Accordingly, the present subject matter provides isolation between the battery and the battery charger in idle condition through a contactor to avoid or prevent drainage of battery.
[0036] While the foregoing describes various embodiments of the invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof. The scope of the invention is determined by the claims that follow. The invention is not limited to the described embodiments, versions or examples, which are included to enable a person having ordinary skill in the art to make and use the invention when combined with information and knowledge available to the person having ordinary skill in the art.

We claim:

1. A battery charger for converting Alternating Current (AC) input into Direct Current (DC) output for storage in a battery, the battery charger comprising:
a Resistor-capacitor (RC) filter; and
a contactor (M) having normally-open contacts (N/O) is coupled with input terminals (L1, L2) and output terminals (TB2+, TB2-) of the battery charger, the contactor (M) receives power from at the input terminal (L1, L2) to energize coil of the contractor (M), wherein the energized coil of the contractor (M) closes the normally-open contacts (N/O) provided at output terminal end to make a connection between the output terminals (TB2+, TB2-) of the battery charger and the battery.

2. The battery charger as claimed in claim 1, wherein the contactor (M) is energized by supply of the AC input.
3. The battery charger as claimed in claim 1, wherein the normally-open contacts (N/O) remain closed when the contactor (M) is energized by continuous supply of the AC input.