Description:TECHNICAL FIELD
The present disclosure relates, in general, to control of operation of integral, all in one section of battery charging. In particular, the present disclosure relates to a means to operate a battery charging in single combined section that execute all required functions essential for intelligent battery charging.
BACKGROUND
Background description includes information that may be useful in understanding the present invention. It is not an admission that any of the information provided herein is prior art or relevant to the presently claimed invention, or that any publication specifically or implicitly referenced is prior art.
Most of the Electronic Battery-operated hand-held Product or Personal care product is available with DC Charging port and supplied with external charger. This external charger is as important as the product and need to carry along with product. In few cases there is chance of interchanging this charger with other charger and will fail to deliver the performance safety and reliability and there is chance of exploding of battery in the product also because non alignment between battery and charger.
Our invention successfully eliminates these drawbacks and offers a novel solution for inbuilt battery charging. Most common method of inbuilt battery charging scheme to use an integrated IC solution. Some of the obvious shortcomings of this method is the requirement for separate IC biasing circuitry. The reliability of IC behavior is also dependent on the tolerances of biasing components, which degrades over time. Since IC is Active semiconductor need refreshing continuous current. IC based solutions are also prone to failure during destruction and lightning surge strikes on utility/grid. Apart from these ICs come with limited rating options and are rarely available for other power solutions. Additionally, some solutions are very expensive and have large form factors.
It is thus imperative to integrate all process in common stage. Our invention provides an intelligent and inexpensive circuit to integrate all functions together to achieve the inbuilt smart charging in all battery-operated products.
OBJECTS OF THE DISCLOSURE
A general object of the present disclosure is to provide a system for a CC-CV battery charging that can be integral part of battery-operated hand-held products or other product having physical size restriction.
Another object of the present disclosure is to provide a system that can operate reliably across a wide range of voltages.
Another object of the present disclosure is to provide a system that has a long operating life.
Another object of the present disclosure is to provide a system that is very economical to implement.
SUMMARY
The present disclosure relates, in general, to control of operation of battery charging. In particular, the present disclosure relates to a means to implement smart CC-CV battery charging in very small form factor.
In an aspect, the present disclosure provides a system to reduce size of battery charger. FIG. 1 illustrates a representation of a first means to battery charging the system 100 includes: 102 Grid/ Utility Protection Circuitry, 103 Safety and Inrush current Protection Circuitry,104 AC-DC Rectification Circuitry, 105 Low voltage conversion Circuitry,106 Battery Charging CC -CV with cut-off Circuitry, and monitored and controlled by 107 Temperature compensation with cut-off Circuitry.
In an embodiment, the system includes FIG. 4 illustrates a representation 400 of invented battery charging: -A first 401AC input, 402 non -polarized capacitors (C1) connected in series with junction of 404 anode of general-purpose rectifier diode (D1) and 405 cathode of transient voltage Zener (ZD1). Another second AC input 403 fusible inrush limiter resistor (R1) connected in series with junction of 406 anode of general-purpose rectifier diode (D2) and 407 cathode of transient voltage Zener (ZD2). Battery charging positive port is taken from junction of 404 cathode of D1 and 406 cathodes of D2. Battery charging negative port is taken from junction of 405 anode of ZD1 and 407 anodes of ZD2 408 Ripple filtering electrolytic capacitor (C2) coupled in parallel across and near the final charging 409 DC output port.
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 DRAWINGS
The accompanying drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a parts of this specification. The drawings illustrate exemplary embodiments of the present invention and, together with the description, serve to explain the principles of the present disclosure.
FIG. 1 illustrates a representation of a conventional means to charge the battery.
DETAILED DESCRIPTIONS
The following is a detailed description of embodiments of the disclosure depicted in the accompanying drawings. The embodiments are in such detail as to clearly communicate the disclosure. However, the amount of detail offered 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.
Battery and charger should always compatible, as the charger has developed based battery configuration and chemistry used. In general reliability of battery chargers are very poor compared with respective product because it needs to sustain destructive stress available on common utility grid. Hence battery charger has lower life cycle and product may need spare charger. In few products with external charger has labeled with battery details and chemistry used but due to size constraint only electrical specification are available for the user to visualize that leads uncertainty and may product will not operate as it has to be with original charger (supplied along with product) and always be safety threat of battery exploding Hence all battery-operated product should have detailed performance and safety related specification labeled in the product for user to identify appropriate charger. Alternatively, charger should be inbuilt in product with matching input utility connector/ plug.
One way to size to make inbuilt by using specific IC which will incorporate several blocks in very small space. FIG. 2 illustrates a representation of an IC based battery charging as this charger need to sustain very common grid that is shared by other various power rating equipment’s and inductive load and sometime lightning surge. These stress influence reliability of IC standard integration and packaging. As field survey reveals electronic IC operates directly with electrical-utility very poor MTBF compared to discrete electronic component.
FIG. 2 illustrates a representation of a first means to battery charging. The setup 200 makes use of an integrated IC 204 connected in series between an input 201 and an output 206 of the battery. A disadvantage of such a setup 200 is the requirement of a separate IC biasing circuit. Further, the reliability of IC behavior is dependent on tolerances of biasing components, which degrade over time. Additionally, IC components are prone to damage and failure during warranty period of the product.
The present disclosure relates, in general, to control of operation of battery chargers in open loop gravity control mode. In particular, the present disclosure relates to a means to incorporate along with battery inside of main product enclosure.
FIG. 3 illustrates a 300 exemplary representation of a system for reducing space required for battery charging, in accordance with an embodiment of the present disclosure. All in one section 302 replaces 102,103,104,105,106 and 107 and even it replaces 202,203,204 and 205.This is very non obvious to achieve using standard technique. The system 300 has very high level of integration required to achieve 302. In 302 requires to identify the electrical and electronic less expensive components for this goal. In 302 all member has to play high level of multitasking to meet the all in one- one man army concept. In 302 association of all member are again very critical
In the system 400, all the components are discrete passive parts connected together enable to work in open loop gravity control. Hence this system will 401 will always track the energy demands at 409.
The system 400 will meet 302 concept and it subdivided in two section electrical and electronic. All electrical function is assigned to 402 and 403 where as electronic functions are assigned to 404,405,406,407 and 408.
Electrical section is connected to 401 utility grid and are aligned with all needs where as electronic section connected to 409 will meet all their requirements.
In the electrical section, the current and voltage rating of the 402 first non-polarized capacitor is selected based on current at input 401 and load at output 409. The use of a 402 enables the system 400 to be used in very wide and high voltage applications. The 402 first non-polarized capacitor is operated only for AC input; this always protect by restricting entry of all unwanted energy and potential. This part 402 has inherited default nature of effective series resistance and effective series capacitor along with main feature of capacitance are enhancing 400 system reliability. This 402 belongs to electrical domain and has excellent comparability with utility grid, has very good response on input compensation. Hence 402 plays roles for utility grid protection, prevents bidirectional electrical conducted and radiated interference and bidirectional product safety. There is another 403-component used in the system 400 play role for inrush current limiting and ensure user and product safety. In System 400 they are associated such a way that their association or integration exponentially increase universal safety, product reliability, etc.
This combination of 402 and 403 also plays roles of very important functional requirements of charging current setting, limiting and charging cut-off.
In electronic section of system 400 has does thermal controlled battery management system of open loop gravity-controlled DC-DC step-down conversion followed by AC-DC rectification. The member 404 405 406 and 407 plays multi roles of AC-DC conversion, simultaneously DC-DC step down compatible alignment with 409, CC-CV function and thermal fold back of 400 complete system.
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.
ADVANTAGES OF THE DISCLOSURE
The present disclosure provides an All-in-one smart CC-CV battery charging systems with few discrete passive components within the product having physical size constraints.
The present disclosure provides a system that can operate reliably across a wide ranges of grid utility input voltages.
The present disclosure provides a system that has a long operating life.
The present disclosure provides a system that is economical to implement.
, Claims:We Claim:
1. A system to all-in-one smart CC-CV battery charging at challenging physical space, the system (300, 400) comprising:
an input (301, 401) configured to receive an input current;
an output (303, 409) coupled to a load comprising one or more battery, the output (303, 409) configured to supply an output current to the all type of battery or equivalent load;
A first 401AC input, 402 non -polarized capacitor (C1) connected in series with junction of 404 anode of general-purpose rectifier diode (D1) and 405 cathode of transient voltage Zener (ZD1). Another second AC input 403 fusible inrush limiter resistor (R1) connected in series with junction of 406 anode of general-purpose rectifier diode (D2) and 407 cathode of transient voltage Zener (ZD2). Battery charging positive port is taken from junction of 404 cathode of D1 and 406 cathodes of D2. Battery charging negative port is taken from junction of 405 anode of ZD1 and 407 anodes of ZD2 408 Ripple filtering electrolytic capacitor (C2) coupled in parallel across and near the final charging 409 DC output port.
2. The system as claimed in claim 1, wherein the system comprises:
a first non-polarized capacitor (C1) (402) coupled in series between the input (401) and anode of general-purpose diode D1(404),
a first non-polarized capacitor (C1) (402) coupled in series between the input (401) and cathode of transient voltage Zener diode ZD1(405),
a first inrush current limiter fusible resistor (R1) (403) coupled in series between the input (401) and anode of general-purpose diode D2(406),
a first inrush current limiter fusible resistor (R1) (403) coupled in series between the input (401) and cathode of transient voltage Zener diode ZD2(407),
A cathode of general-purpose diode D1 (404) connected in seines with, cathode of general-purpose diode D2 (406), positive of filter capacitor C2(408) and Bat +(409)
An anode of transient voltage Zener diode ZD1 (405) connected in seines with, anode of transient voltage Zener diode ZD2 (407), negative of filter capacitor C2(408) and Bat (409)
3. The system as claimed in claim 1, wherein the system comprises electrical and electronic functions to enable open loop gravity control CC-CV battery charging functions.
4. The system as claimed in claim 1, wherein the system comprises electrical section function by 402 and 403.
5. The system as claimed in claim 1, wherein the system comprises electronic section function by 404,405,406,407 and 408.
6. The system as claimed in claim 1, wherein the system comprises 402 and 403 is very compatible with 401 and 402.
7. The system as claimed in claim 1, wherein the system comprises 404,405,406,408 and 403 is very compatible with 409.