DESC:FIELD OF INVENTION
[0001] The present disclosure relates to a field of charging of an electric vehicle battery and more particularly, the present disclosure relates to charging of a lithium-ion battery of an electric vehicle when connected to plurality of power sources.
BACKGROUND
[0002] This section is intended to introduce the reader to various aspects of art that may be related to various aspects of the present disclosure, which are described below. This disclosure is believed to be helpful in providing the reader with background information to facilitate a better understanding of the various aspects of the present disclosure. Accordingly, it should be understood that these statements are to be read in this light, and not just as admissions of prior art.
[0003] A solar charge controller is an electronic device used to regulate the charging of a battery bank from the solar panels. The charge controller regulates the current to the battery by using maximum power point technique (MPPT). The problem arises when the battery is being charged with multiple power sources. In that scenario, use of multiple controllers is an issue in an electric vehicle where there is little space to accommodate several hardware structures in the vehicle.
[0004] Further, charging a lithium-ion battery for an electric vehicle is not same as that of a lead acid battery. Since lithium battery are combustible, they cannot be charged with a power source of rated capacity more than that of the battery itself. This problem is not solved in the art. Also, the problem persists about power sharing when two or more than two power sources are being used to charge the lithium-ion battery.
SUMMARY
[0005] The disclosure provides technique(s) for solving the above-described problems i.e., to provide a power sharing technique, in particular, a system to share the power flow from plurality of power sources to the battery based on the selection by the inverter controller.
[0006] In one of the embodiments of the disclosure, a system is provided for charging a battery of an electric vehicle, comprising a plurality of power sources to supply power, an inverter controller connected to the plurality of power sources, a battery connected to the inverter controller, a solar charge controller installed inside the inverter controller, wherein the solar charge controller is operatively driven by the inverter controller to control flow of power from a solar source, wherein the inverter controller selects the flow of power from the one of the plurality of power sources towards the battery based on instantaneous availability.
[0007] These and other objectives and advantages of the present disclosure will become more apparent when reference is made to the following description.
BRIEF DESCRIPTION OF THE DRAWINGS
[0008] To further clarify advantages and features of the present disclosure, a more particular description of the disclosure will be rendered by reference to specific embodiments thereof, which is illustrated in the appended drawings. It is appreciated that these drawings depict only typical embodiments of the disclosure and are therefore not to be considered limiting of its scope. The disclosure will be described and explained with additional specificity and detail with the accompanying drawings in which:
[0009] Figure 1 illustrates a multiple source battery charging system, according to one or more embodiments of the present subject matter.
DETAILED DESCRIPTION OF THE DISCLOSURE
[0010] For the purpose of promoting an understanding of the principles of the disclosure, reference will now be made to the embodiment illustrated in the drawings and specific language will be used to describe the same. It will nevertheless be understood that no limitation of the scope of the disclosure is thereby intended, such alterations and further modifications in the illustrated system, and such further applications of the principles of the disclosure as illustrated therein being contemplated as would normally occur to one skilled in the art to which the disclosure relates.
[0011] It will be understood by those skilled in the art that the foregoing general description and the following detailed description are exemplary and explanatory of the disclosure and are not intended to be restrictive thereof. Throughout the patent specification, a convention employed is that in the appended drawings, like numerals denote like components.
[0012] Reference throughout this specification to “an embodiment”, “another embodiment”, “an implementation”, “another implementation” or similar language means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment of the present disclosure. Thus, appearances of the phrase “in an embodiment”, “in another embodiment”, “in one implementation”, “in another implementation”, and similar language throughout this specification may, but do not necessarily, all refer to the same embodiment.
[0013] The terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process or method that comprises a list of steps does not include only those steps but may include other steps not expressly listed or inherent to such process or method. Similarly, one or more devices or sub-systems or elements or structures proceeded by "comprises... a" does not, without more constraints, preclude the existence of other devices or other sub-systems or other elements or other structures or additional devices or additional sub-systems or additional elements or additional structures.
[0014] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The system and examples provided herein are illustrative only and not intended to be limiting.
[0015] The terms “a” and “an” herein do not denote a limitation of quantity, but rather denote the presence of at least one of the referenced items.
[0016] In an exemplary embodiment of the present disclosure, a system (100) is provided to govern power distribution from diverse power sources (101, 102, 103) to a battery (104), facilitated by an inverter controller (105). The inverter controller (105) is intricately coupled to said power sources (101, 102, 103), enabling precise control of power allocation to the battery (104) through the selective designation of a specific source from the available plurality.
[0017] In practical terms, consider an electric vehicle navigating through a plurality of environmental conditions. For example, on a sunny day, the solar power source (101) becomes a prime contributor. The inverter controller (105), intricately coupled to the solar array, intelligently recognizes the abundance of sunlight and selectively designates the solar source (101) to channel energy to the battery (104). The system optimally harnesses the available solar energy, ensuring efficient charging and reducing reliance on other power sources during daylight hours.
[0018] Now, imagine the electric vehicle encountering a region with less sunlight, such as an region with tall buildings casting shadows. In this scenario, the inverter controller (105) swiftly adapts. It discerns the diminished effectiveness of the solar source (101) and seamlessly shifts the designation to the AC mains (103) as the primary power source. This dynamic responsiveness allows the vehicle to consistently receive power, ensuring an uninterrupted and steady charge for the battery (104).
[0019] In a different setting, for example, during a remote off-road travel where access to charging infrastructure is limited, the robust generator (102) may be used. The inverter controller (105), attuned to the battery's (104) needs, recognizes the drop in voltage as the vehicle traverses challenging terrain. It then selectively designates the generator (102) to kick in, supplying the necessary power to bring the battery back to optimal levels. This intelligent selection ensures the vehicle's autonomy in diverse environments, showcasing the adaptability inherent in the disclosed system.
[0020] The integration of a solar charge controller (106) within the inverter controller (105) further exemplifies the system's ingenuity. Suppose the electric vehicle is parked under a partially shaded area, with intermittent exposure to sunlight. The solar charge controller (106), seamlessly embedded within the inverter controller (105), monitors the solar input and adjusts the charging process accordingly. It optimizes the utilization of available sunlight, effectively managing the interplay between the solar source (101) and the battery (104) without the need for additional controllers.
[0021] In a scenario where energy demand is high, perhaps due to intensive acceleration or uphill driving, the inverter controller (105) may intelligently engage multiple power sources simultaneously. For instance, it may designate both the generator (102) and the AC mains (103) to collaborate in meeting the increased power requirements. This cooperation ensures that the battery (104) receives a robust supply of energy, maintaining optimal performance during demanding driving conditions.
[0022] In summary, the exemplary embodiment of the disclosed system is not a static, one-size-fits-all solution. Instead, it dynamically navigates through diverse scenarios, intelligently designating specific power sources (101, 102, 103) based on real-time conditions. This adaptability ensures efficient and tailored power distribution to the battery (104), making the electric vehicle a versatile and resilient entity in the face of varying environmental and operational challenges.
[0023] At predetermined intervals, such as every 0.1 milliseconds, the inverter controller (105) systematically assesses the availability of power from the assorted power sources (101, 102, 103). In instances where the battery (104) requires charging, the inverter controller (105) judiciously selects a singular power source from the plurality (101, 102, 103), guided by an instantaneous availability criterion. Notably, the controller (105) ensures compatibility by confirming that the voltage supply from the chosen source is commensurate with or surpasses the rated voltage of the battery (104). Following this selection process, the inverter controller (105) actuates an electronic relay (107) into an open mode, thereby enabling the unimpeded flow of power from the selected source to the battery (104).
[0024] Consider a scenario where an electric vehicle equipped with the disclosed system (100) is in operation. At regular intervals, precisely every 0.1 milliseconds, the inverter controller (105) diligently determines the availability of energy from a diverse array of sources, namely the solar array (101), generator (102), and AC mains (103).
[0025] In a dynamic urban environment, the vehicle encounters intermittent stops and starts, causing fluctuations in the battery's (104) charge level. When the inverter controller (105) detects the need for charging during one of its systematic assessments, it engages in a decision-making process. Drawing upon an instantaneous availability criterion, the controller (105) scans the power sources (101, 102, 103) with discernment. For instance, if the vehicle is momentarily stationary under a clear sky, the inverter controller (105) might opt for the solar source (101) as the singular power source. This intelligent selection ensures that the vehicle capitalizes on the available sunlight to replenish the battery (104) efficiently.
[0026] Furthermore, the inverter controller's (105) confirms the compatibility of the chosen source with the battery's requirements. For instance, if the vehicle transitions from a well-lit area to a shaded zone, and the solar source (101) is no longer optimal, the controller (105) swiftly shifts its allegiance to the AC mains (103). Before allowing the unimpeded flow of power, the controller (105) ensures that the voltage supply from the chosen source aligns with or surpasses the rated voltage of the battery (104). This validation safeguards the battery (104) from potential issues related to undercharging or overcharging, contributing to its longevity and overall health.
[0027] Following this thorough selection and validation process, the inverter controller (105) performs the activation of an electronic relay (107) into an open mode. For example, if the AC mains (103) is designated as the optimal power source, the electronic relay (107) opens the pathway for the seamless transfer of power to the battery (104).
[0028] In a tangible scenario where the electric vehicle encounters a fluctuating energy landscape, such as transitioning from an urban setting with access to charging stations (AC mains) to a remote area without charging infrastructure, the inverter controller (105) ensures a seamless transition. It dynamically navigates through the available power sources (101, 102, 103), adapting to the changing environment and operational requirements to guarantee an optimal charge for the battery (104).
[0029] In essence, the selection, validation, and activation process performed by the inverter controller (105) exemplify the sophistication of the disclosed system (100). This adaptability ensures that the electric vehicle is not just a consumer of power but an intelligent entity that optimizes its charging process based on real-time conditions, ultimately contributing to a more efficient and resilient electric vehicle power.
[0030] Additionally, the present disclosure envisions the integration of a solar charge controller (106) seamlessly within the inverter controller (105). This strategic integration obviates the necessity for multiple controllers to regulate power flow from the sources (101, 102, 103) to the battery (104) within an electric vehicle. This consolidated approach not only simplifies the architectural framework of the system but also enhances spatial efficiency within the electric vehicle, thereby contributing to a reduction in vehicle weight.
[0031] In accordance with an inventive aspect disclosed herein, a solar charge controller (106) is seamlessly incorporated within the inverter controller (105). This integration obviates the requirement for a multiplicity of discrete controllers tasked with regulating power flow from diverse sources (101, 102, 103) to the battery (104) within an electric vehicle. This integrated approach not only simplifies the architectural complexity of the system but also enhances spatial efficiency within the electric vehicle, thereby effectuating a palpable reduction in vehicular weight.
[0032] Embodiments of the integrated system may be envisaged where the solar charge controller (106) is integrated seamlessly within the inverter controller (105), forming a unified and streamlined architecture. This integration is characterized not merely by a physical juxtaposition but by a functional amalgamation, wherein the inverter controller (105) assumes authority over the intricacies of solar charging regulation.
[0033] In conventional electric vehicle power systems, disparate units such as the inverter controller (105) and the solar charge controller (106) demand individual spatial allocations within the vehicular structure. In the disclosed integration, however, the solar charge controller (106) seamlessly converges with the inverter controller (105), eliminating the need for separate physical footprints. This integrated functionality, governed by the inverter controller (105), ensures a harmonized and simplified approach to power management.
[0034] Operational scenarios of the integrated system may be envisioned during the traversal of an electric vehicle through varying environmental conditions. In instances of abundant sunlight, the inverter controller (105), now overseeing solar charge regulation, adeptly directs the flow of solar power to the battery (104) without the need for distinct solar charge control entities. Conversely, when solar input diminishes, the inverter controller (105) seamlessly adapts its strategy to leverage alternative power sources, such as the generator (102) or AC mains (103), all within the ambit of a unified operational framework.
[0035] The advantages of this integrated approach extend to weight considerations, a critical aspect in electric vehicle design. Traditional architectures, marked by the presence of numerous controllers, contribute incrementally to the overall weight of the vehicle. In contrast, the integration of functions within the inverter controller (105) mitigates this cumulative weight effect, resulting in a discernible reduction in vehicular mass. This weight optimization positively influences energy efficiency and overall vehicular performance.
[0036] In summation, the integration of the solar charge controller (106) within the inverter controller (105) signifies an inventive leap in electric vehicle power management. This consolidated approach, characterized by its efficiency, simplicity, and weight-conscious design, heralds a transformative era in the evolution of electric vehicle architectures, promising streamlined operations, enhanced spatial efficiency, and ultimately, a lighter and more efficient electric vehicle.
[0037] In conclusion, the disclosed embodiment ensures a methodical and optimized power transfer from a plurality of sources (101, 102, 103) to the battery (104), embodying a refined yet spatially efficient solution for the management of electric vehicle power. This innovation is marked by the integration of a solar charge controller (106) within the inverter controller (105), thereby streamlining the architecture and enhancing the overall efficiency of the electric vehicle power system.
[0038] In an embodiment of the present disclosure, an enhanced user interface feature is introduced, allowing users to actively engage with and monitor the power sources utilized for charging the battery (104) within an electric vehicle equipped with the disclosed system (100). This user interface provides real-time visibility into the dynamic interplay of power sources (101, 102, 103) and empowers users to exercise control over the charging process by selecting or prioritizing specific power sources.
[0039] A user-friendly display, integrated into the vehicle's dashboard or control panel, presents a graphical representation of the available power sources in conjunction with their current utilization status. Visual indicators, such as icons or color-coded elements, provide users with an intuitive snapshot of the active power sources at any given moment. For instance, icons representing solar (101), generator (102), and AC mains (103) may illuminate or change color based on their activation status.
[0040] In scenarios where the vehicle is stationary or under specific user preferences, the user interface allows direct interaction with the power source selection process. Users can manually select a preferred power source through tactile controls or a touchscreen interface. For example, a user might prioritize solar charging (101) during daylight hours or opt for the generator (102) when driving in remote areas where access to other power sources is limited.
[0041] Furthermore, the user interface incorporates feedback mechanisms, providing users with information on the charging status, rate of charge, and the estimated time until the battery reaches full capacity. This transparency enables users to make informed decisions based on their energy needs, travel plans, and environmental considerations.
[0042] To exemplify this embodiment, envision a scenario where an electric vehicle user parks the vehicle in an open area with ample sunlight. Through the user interface, the driver observes that the solar power source (101) is actively charging the battery (104). Delving into the interface, the user might decide to manually prioritize solar charging (101) to capitalize on the available sunlight and reduce reliance on other power sources.
[0043] Conversely, in instances where the vehicle enters an urban environment with limited sunlight, the user interface communicates a seamless transition to alternative power sources, such as the AC mains (103). The user, recognizing the reduced efficacy of solar charging, might choose to manually switch the power source preference to the AC mains (103) for optimal charging efficiency.
[0044] In this embodiment, the user interface serves not only as an informative tool but as an interactive platform, enabling users to actively participate in the charging process. This user-centric approach aligns with the principles of user empowerment and customization, enhancing the overall electric vehicle experience.
[0045] In an alternative embodiment, the disclosed charging system (100) for an electric vehicle battery (104) exhibits a heightened level of adaptability and intelligence. The system comprises a diverse array of power sources (101, 102, 103) designed to furnish electrical power, with a battery unit (104) electrically linked to an inverter controller (105). This inverter controller (105) is intricately interlinked with the plurality of power sources (101, 102, 103), introducing a dynamic selection and regulation mechanism that considers both instantaneous availability and prioritization criteria.
[0046] Consider a scenario where the electric vehicle is exposed to varying environmental conditions. In this embodiment, the inverter controller (105) not only dynamically assesses real-time availability but also adheres to predefined prioritization criteria. For instance, during daylight hours with ample sunlight, the system may prioritize solar charging (101) due to its renewable and environmentally friendly attributes. Conversely, in scenarios where solar input diminishes, the prioritization criteria might shift to the generator (102) or AC mains (103), ensuring an optimized and adaptive charging strategy.
[0047] In another alternative embodiment, the charging system (100) may integrate user-defined preferences into the decision-making process. The inverter controller (105) could allow users to set preferences based on factors such as energy source preferences, cost considerations, or even environmental impact. This user-centric approach empowers individuals to tailor the charging system to their specific needs and values, enhancing the overall user experience.
[0048] Furthermore, an additional embodiment may involve the implementation of machine learning algorithms within the inverter controller (105). Through continuous data analysis and pattern recognition, the system can adapt its prioritization criteria over time, optimizing power source selection based on historical usage patterns, environmental conditions, and user behavior. This embodiment exemplifies a forward-thinking approach, leveraging machine learning to enhance the system's intelligence and efficiency.
[0049] In summary, the disclosed charging system presents alternative embodiments that extend beyond the dynamic selection of power sources based on real-time availability. These embodiments introduce features such as user-defined preferences and machine learning integration, demonstrating a versatile and adaptive approach to electric vehicle battery charging that aligns with user needs and advances in technology.
[0050] Benefits, other advantages, and solutions to problems have been described above with regard to specific embodiment. However, the benefits, advantages, solutions to problems, and any component(s) that may cause any benefit, advantage, or solution to occur or become more pronounced are not to be construed as a critical, required, or essential feature or component of any or all the claims.
[0051] While specific language has been used to describe the disclosure, any limitations arising on account of the same are not intended. As would be apparent to a person in the art, various working modifications may be made to the system in order to implement the inventive concept as taught herein. ,CLAIMS:WE CLAIM:
1. A system (100) for charging a battery (104), comprising:
a plurality of power sources (101, 102, 103) to supply power;
a battery (104) connected to the inverter controller (105); and
an inverter controller (105) connected to the plurality of power sources (101, 102, 103), wherein the inverter controller (105) selects the flow of power from the one of the plurality of power sources (101, 102, 103) towards the battery (104) based on instantaneous availability.

2. The system (100) as claimed in claim 1, wherein the plurality of power sources (101, 102, 103) comprises one or more of: solar, generator, and AC mains.

3. The system (100) as claimed in claim 2, wherein the inverter controller (105) selects the generator (102) from the plurality of power sources (101, 102, 103) to charge the battery, when voltage in the battery drops down to half of the rated voltage.
4. The system (100) as claimed in claim 1, wherein the system further comprises an electronic relay (107) configured to allow the flow of power from plurality of sources (101, 102, 103) towards the battery (104).
5. The system (100) as claimed in claim 1, wherein the inverter controller (105) is further configured to check the voltage supply of the selected power source to be equivalent to at least the rated voltage of the battery.
6. The system (100) as claimed in claim 1, further comprising a solar charge controller (106) installed inside the inverter controller (105), wherein the solar charge controller (106) is operatively driven by the inverter controller (105) to control flow of power from a solar source (101).
7. A charging system (100) for a battery (104) in an electric vehicle, comprising:
a plurality of power sources (101, 102, 103) configured to supply electrical power;
a battery unit (104) electrically connected to an inverter controller (105); and
an inverter controller (105) interlinked with the plurality of power sources (101, 102, 103), wherein the inverter controller (105) dynamically selects and regulates the power flow from one of the plurality of power sources (101, 102, 103) to the battery unit (104) based on instantaneous availability and prioritization criteria.