An electrical energy storage device charging and interchange station, and methods of operating the same

Abstract

An electrical energy storage device charging and interchange station, and methods of operating the same Embodiments herein disclose an electrical energy storage device charging and interchange station, and methods of operating the electrical energy storage device charging and interchange station. Embodiments herein disclose an electrical energy storage device charging and interchange station, wherein the electrical energy storage device charging and interchange station can accommodate batteries of varying sizes and capacities.

Description

An electrical energy storage device charging and interchange station, and methods of operating the sameCROSS-REFERENCE TO RELATED APPLICATIONThis application is based on and derives the benefit of Indian Provisional Application IN202441065022, the contents of which are incorporated herein by reference.TECHNICAL FIELD

[0001] Embodiments disclosed herein relate to electrical energy storage device charging and interchange stations, and more particularly to electrical energy storage device charging and interchange stations and methods of operating the sameBACKGROUND

[0002] In the present age, the shift from internal combustion (IC) vehicles to electric vehicles (EVs) is primarily fuelled by environmental concerns, advancements in an electrical energy storage device technology, government regulations, and growing consumer demand. These factors drive innovations and lead to the development of more practical and competitive EVs with longer ranges, faster charging times, and increased affordability. Overall, the changing landscape reflects a broader movement towards cleaner, more sustainable transportation options.

[0003] However, there are several challenges faced by EVs (such as charging an EV takes longer than refuelling a traditional vehicle), leading to inconvenience and range anxiety, particularly during long trips. Limited charging infrastructure coverage further complicates the electric vehicle adoption, hindering accessibility and exacerbating range anxiety. Additionally, frequent charging can accelerate energy storage device degradation, reducing lifespan and raising sustainability concerns. These challenges underscore the necessity for alternative solutions like electrical energy storage device interchange to enhance EV usability and adoption.

[0004] In the current landscape of electric vehicle energy solutions, there is a pressing need for a versatile and cost-effective electrical energy storage device charging and interchange station capable of accommodating multiple platforms, including heavy electric vehicles. The existing electrical energy storage device charging and interchange stations typically cater to vehicles with a single electrical energy storage device capacity, limiting their ability to serve a wide variety of vehicles with differing capacities. This limitation underscores the necessity formultiple systems equipped to handle various electrical energy storage device capacities, addressing the issue of accommodating diverse vehicle types.

[0005] Consequently, there is a demand for the development of electrical energy storage device charging and interchange stations that can overcome the shortcomings of conventional systems.

[0006] Hence, there is a need in the art for solutions which will overcome the above mentioned drawback(s), among others.OBJECTS

[0007] A principal object of embodiments herein is to disclose an electrical energy storage device charging and interchange station, and methods of operating the electrical energy storage device charging and interchange station.

[0008] Another object of embodiments herein is to disclose an electrical energy storage device charging and interchange station, wherein the electrical energy storage device charging and interchange station can accommodate batteries of varying sizes and capacities.

[0009] Yet another object of embodiments herein is to disclose an electrical energy storage device charging and interchange station that is capable of supporting multiple vehicle platforms, such as, but not limited to, light, medium, and heavy electric vehicles.

[0010] Still, another object of embodiments herein is to disclose an electrical energy storage device charging and interchange station that reduces the turnaround time for electric vehicle recharging through fast and seamless battery interchange operations.

[0011] Yet, another object of embodiments herein is to disclose an electrical energy storage device charging and interchange station designed to minimise energy storage device degradation by reducing dependency on high-rate charging cycles.

[0012] Still, another object of embodiments herein is to disclose a modular and scalable electrical energy storage device charging and interchange station architecture that can be easily adapted based on vehicle population density and / or regional energy demand.

[0013] Yet another object of embodiments herein is to disclose an intelligent control system for electrical energy storage device charging and interchange stations that ensures optimal charging, load balancing, and resource allocation.

[0014] Still, another object of embodiments herein is to disclose a system and method that enhances interoperability between the electrical energy storage device charging and interchange station and a wide range of electric vehicles from different Original Equipment Manufacturers (OEMs).

[0015] Yet, another object of embodiments herein is to disclose an energy -efficient and cost-effective electrical energy storage device charging and interchange station that seamlessly integrates with sources or grid-based power systems.

[0016] Still, another object of embodiments herein is to disclose a user-friendly interface and automated operation mechanism for electrical energy storage device charging and interchange stations to improve accessibility, ease-of-use, and reduce human intervention in charging and interchange operations.

[0017] These and other aspects of the embodiments herein will be better appreciated and understood when considered in conjunction with the following description and the accompanying drawings. It should be understood, however, that the following descriptions, while indicating at least one embodiment and numerous specific details thereof, are given by way of illustration and not of limitation. Many changes and modifications may be made within the scope of the embodiments herein without departing from the spirit thereof, and the embodiments herein include all such modifications.SUMMARY

[0018] An electrical energy storage device charging and interchange station includes a frame that defines a rack. At least one compartment is configured within the rack to accommodate a cassette containing one or more electrical energy storage devices. A thermal system is mounted on the operational top of the rack and is designed to regulate the temperature within the station. A charging unit converts and regulates electrical energy to charge the storage device(s) present in the racks. A rack supervising unit is operatively connected to the compartment, the thermal system, and the charging unit, and is configured to monitor and control the operations of the station. A power distribution unit manages the internal distribution of electrical energy, while a rack distribution unit, connected to the power distribution unit, supplies energy to the compartment and the cassette.

[0019] The frame defining the rack is supported by a pair of support structures positioned on either side of the frame. The compartment features rails for cassette movement, a receptacle for securing the cassette, and connectors for fluid and electrical interfaces. Thecompartment further includes a fluid connector for cooling and an electrical connector for power transfer. The rack is modularly designed to accommodate cassettes of different sizes and dimensions. The frame is enclosed with protective panels. Each compartment includes a pair of rails to facilitate the insertion and extraction of the cassette, and a receptacle that secures the cassette when fully inserted. The rails comprise a vertical section for engaging guide rollers and a horizontal section for supporting load rollers of the cassette.

[0020] The thermal system comprises air passage openings at the front and rear of the station to aid in air circulation and heat dissipation. The thermal system may include a complete Heating, Ventilation, and Air Conditioning (HVAC) setup with heater, compressor, condenser, and evaporator components.

[0021] The charging unit is mounted on a charge unit support system having a tray supported by a draw slide, which allows for maintenance access. The draw slide includes an outer member, an inner member that slides within it, several internal rollers mounted on the inner member, and at least one stopper positioned to restrict motion. The charging unit may be extended for maintenance by sliding out a tray mounted on the draw slide. This movement is restricted by one or more stoppers to ensure safe handling. The unit’s operational data is stored and can be accessed remotely. In the event of a power outage, the uninterruptible power supply ensures continuity by selecting an available cassette as a power source, based on pre-set instructions.

[0022] The charging unit placement system comprises a tray supported by a draw slide. This slide includes outer and inner members, internal rollers, and stoppers. Supporting arms may include external rollers. The stoppers prevent overextension of the tray. The tray may be made from steel, aluminium, or composite materials.

[0023] The rack supervising unit also monitors input from sensors, generates control signals for the thermal and charging systems, and stores or transmits data to cloud storage for remote monitoring. The station is capable of housing multiple adjacent racks with varied cassette configurations. Cassette insertion and extraction can be manual or automated.

[0024] The station also comprises an uninterruptible power supply that provides backup power during outages and may utilize one of the cassettes as a temporary power source.

[0025] The method of operation includes detecting cassette insertion, initiating charging, supplying power via the power and rack distribution units, converting and regulating this power through the charging unit, and managing thermal conditions using the thermalsystem. These processes are monitored and controlled by the rack supervising unit. The method may also include modular rack configuration for cassettes of varying dimensions. When inserted, the cassette is secured in place using a receptacle that engages with an arrester mechanism.

[0026] The method for inserting a cassette into the rack involves aligning it with the compartment, guiding it along the vertical and horizontal rail sections, securing it in position with the receptacle, and establishing fluid and electrical connections. The method for removing the cassette from the rack involves disengaging the locking mechanism.

[0027] Operating the tray assembly involves extending the inner and outer slide members sequentially until the stoppers engage, allowing full access for maintenance. Retraction follows the reverse sequence, with reconnection of necessary interfaces. The system may also include vibration-damping features to minimize mechanical disturbances during operation.BRIEF DESCRIPTION OF FIGURES

[0028] Embodiments herein are illustrated in the accompanying drawings, throughout which like reference letters indicate corresponding parts in the various figures. The embodiments herein will be better understood from the following description with reference to the following illustratory drawings. Embodiments herein are illustrated by way of examples in the accompanying drawings, and in which:

[0029] FIG. 1 illustrates an isometric view of an electrical energy storage device charging and interchange station, according to embodiments as disclosed herein;

[0030] FIG. 2 illustrates an isometric view of the electrical energy storage device charging and interchange station, according to embodiments as disclosed herein;

[0031] FIG. 3 illustrates a front view of the electrical energy storage device charging and interchange station, according to embodiments as disclosed herein;

[0032] FIG. 4 illustrates a rear view of the electrical energy storage device charging and interchange station, according to embodiments as disclosed herein;

[0033] FIG. 5 illustrates a left-side view of the electrical energy storage device charging and interchange station, according to embodiments as disclosed herein;

[0034] FIG. 6 illustrates an isometric view of a compartment of the electrical energy storage device charging and interchange station, according to embodiments as disclosed herein;

[0035] FIG. 7 illustrates an isometric view of the electrical energy storage device charging and interchange station, depicting a charging unit, according to embodiments as disclosed herein;

[0036] FIG. 8 illustrates an isometric view of the charging unit of the electrical energy storage device charging and interchange station, according to embodiments as disclosed herein;

[0037] FIG. 9 illustrates a front view of the charging of the electrical energy storage device charging and interchange station, according to embodiments as disclosed herein;

[0038] FIG. 10 illustrates a flow chart depicting the working of the electrical energy storage device charging and interchange station, according to embodiments as disclosed herein;

[0039] FIG. 11 illustrates a flow chart depicting the working of the comportment in the electrical energy storage device charging and interchange station, according to embodiments as disclosed herein; and

[0040] FIG. 12 illustrates a flow chart depicting the working of charging unit placement system in the electrical energy storage device charging and interchange station, according to embodiments as disclosed herein.DETAILED DESCRIPTION

[0041] The embodiments herein and the various features and advantageous details thereof are explained more fully with reference to the non-limiting embodiments that are illustrated in the accompanying drawings and detailed in the following description. Descriptions of well-known components and processing techniques are omitted so as to not unnecessarily obscure the embodiments herein. The examples used herein are intended merely to facilitate an understanding of ways in which the embodiments herein may be practiced and to further enable those of skill in the art to practice the embodiments herein. Accordingly, the examples should not be construed as limiting the scope of the embodiments herein.

[0042] For the purposes of interpreting this specification, the definitions (as defined herein) will apply and whenever appropriate the terms used in singular will also include the plural and vice versa. It is to be understood that the terminology used herein is for the purposes of describing particular embodiments only and is not intended to be limiting. The terms “comprising”, “having” and “including” are to be construed as open-ended terms unless otherwise noted.

[0043] The words / phrases "exemplary", “example”, “illustration”, “in an instance”, “and the like”, “and so on”, “etc.”, “etcetera”, “e.g.,” , “i.e.,” are merely used herein to mean "serving as an example, instance, or illustration." Any embodiment or implementation of the present subject matter described herein using the words / phrases "exemplary", “example”, “illustration”, “in an instance”, “and the like”, “and so on”, “etc.”, “etcetera”, “e.g.,” , “i.e.,” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0044] Embodiments herein may be described and illustrated in terms of blocks that carry out a described function or functions. These blocks, which may be referred to herein as managers, units, modules, hardware components or the like, are physically implemented by analogue and / or digital circuits such as logic gates, integrated circuits, microprocessors, microcontrollers, memory circuits, passive electronic components, active electronic components, optical components, hardwired circuits and the like, and may optionally be driven by a firmware. The circuits may, for example, be embodied in one or more semiconductor chips, or on substrate supports such as printed circuit boards and the like. The circuits constituting a block may be implemented by dedicated hardware, or by a processor (e.g., one or more programmed microprocessors and associated circuitry), or by a combination of dedicated hardware to perform some functions of the block and a processor to perform otherfunctions of the block. Each block of the embodiments may be physically separated into two or more interacting and discrete blocks without departing from the scope of the disclosure. Likewise, the blocks of the embodiments may be physically combined into more complex blocks without departing from the scope of the disclosure.

[0045] It should be noted that elements in the drawings are illustrated for the purposes of this description and ease of understanding and may not have necessarily been drawn to scale. For example, the flowcharts / sequence diagrams illustrate the method in terms of the steps required for understanding of aspects of the embodiments as disclosed herein. Furthermore, in terms of the construction of the device, one or more components of the device may have been represented in the drawings by conventional symbols, and the drawings may show only those specific details that are pertinent to understanding the present embodiments so as not to obscure the drawings with details that will be readily apparent to those of ordinary skill in the art having the benefit of the description herein. Furthermore, in terms of the system, one or more components / modules which comprise the system may have been represented in the drawings by conventional symbols, and the drawings may show only those specific details that are pertinent to understanding the present embodiments so as not to obscure the drawings with details that will be readily apparent to those of ordinary skill in the art having the benefit of the description herein.

[0046] The accompanying drawings are used to help easily understand various technical features and it should be understood that the embodiments presented herein are not limited by the accompanying drawings. As such, the present disclosure should be construed to extend to any modifications, equivalents, and substitutes in addition to those which are particularly set out in the accompanying drawings and the corresponding description. Usage of words such as first, second, third etc., to describe components / elements / steps is for the purposes of this description and should not be construed as sequential ordering / placement / occurrence unless specified otherwise.

[0047] The embodiments herein achieve electrical energy storage device charging and interchange stations and methods of operating the same that enable rapid and efficient interchange of electrical energy storage devices, support varying form factors and capacities of such devices, and provide compatibility across a wide range of electric vehicle platforms, including those developed by different original equipment manufacturers (OEMs). The embodiments further facilitate reduction in vehicle downtime, enhanced energy management, improved system scalability, and mitigation of range anxiety through infrastructure versatilityand intelligent operational control. Referring now to the drawings, and more particularly to FIGS. 1 through 12, where similar reference characters denote corresponding features consistently throughout the figures, there are shown embodiments.

[0048] The following terms / components / systems and corresponding reference numerals have been referred to herein:100 - Charging and interchange station110 - Frame112 - Rack114 - Support Structure120 - Panel130 - Thermal System132 - Air Passage opening140 - Compartment142 - Fluid connector144 - Electrical connector146 - Rail148 - Receptacle150 - Uninterruptible Power Supply (UPS)160 - Power Distribution Unit (PDU)165 - Charging unit placement system170 - Charging unit171 - Fluid connector172 - Electrical connector173 - Tray174 - Draw slide175 - Outer Member176 - Inner Member177 - Internal Rollers178 - Primary Stopper179 - Secondary Stopper180 - Supporting Arm182 - External Rollers190 - Rack Supervising Unit (RSU)192 - Rack Distribution unit (RDU)\200 - Cassette

[0049] FIGs. 1-5 illustrates different views of an electrical energy storage device charging and interchange station 100. The station 100 comprises a frame 110 that forms the structural foundation of the electrical energy storage device charging and interchange station 100. The frame 110 defines a plurality of racks 112 configured to accommodate multiple compartments 140. In an embodiment, a plurality of racks are configured adjacent to each other. Each compartment is configured to accommodate a cassette 200 having multiple electrical energy storage devices. The rack 112 is supported by a pair of support structures 114 positioned on either side of the rack 112. A panel 120 is provided external to the frame 110, wherein the panel can form a cover that encloses the frame from external elements and acts as a protective shield.

[0050] The cassettes 200 are removable units designed to house and protect individual electrical energy storage devices. Each cassette 200 is engineered to fit securely within a compartment 140 of the rack 112. The cassettes 200 may incorporate various features such as thermal management systems, safety mechanisms, and data communication interfaces to ensure optimal performance and safety of the electrical energy storage devices. Alternative designs for the cassettes 200 may include different form factors, materials, or integrated charging circuitry to enhance versatility and efficiency.

[0051] The station 100 also incorporates a thermal system 130, an Uninterruptible Power Supply (UPS) 150, a Power Distribution Unit (PDU) 160, a charging unit 170, a Rack Supervising Unit (RSU) 190, and a Rack Distribution Unit (RDU) 192. These components work together to facilitate the charging and interchange of electrical energy storage devices.

[0052] The frame 110 forms the structural foundation of the electrical energy storage device charging and interchange station 100. The frame 110 is configured using a plurality of longitudinal and horizontal bars fastened together to create a robust and stable structure. The frame 110 can withstand and distribute the weight of multiple cassettes 200 and associated components while providing easy access for maintenance and operation. In alternative embodiments, the frame 110 may be manufactured using different materials such as steel, aluminium, metal alloys, reinforced polymers or composite materials, depending on the specific requirements of strength, weight, and corrosion resistance while maintaining structural integrity. In alternative embodiments, the frame 110 may incorporate modular design elements, allowing for easy expansion or reconfiguration of the station as needed.

[0053] The rack 112 is designed to include multiple compartments 140. Each compartment 140 within the rack 112 is designed to securely house one or more individual cassettes 200 containing electrical energy storage devices. In alternative embodiments, by varying the frame arrangement, the rack 112 can be configured to be modular in nature, allowing for flexibility in the number and size of compartments to accommodate different types and sizes of electrical energy storage devices. This modularity enables the station 100 to adapt to evolving energy storage technologies and varying vehicle requirements.

[0054] In an embodiment herein, the rack 112 can be provided with a collapsible door (not shown) at the front face covering the compartment 140. The door serves as a protective barrier against external elements such as dust, debris, moisture, and other contaminants from entering the compartment 140. The collapsible door allows for easy access to the compartments (when needed), while providing a compact solution when closed. In an embodiment herein, the collapsible door can be an automated door. In an embodiment herein, the collapsible door can be made of transparent materials that allow for visual inspection without opening the door.

[0055] In an embodiment herein, the rack 112 is configured to be modular. The rack 112 can be configured to be flexible to increase or decrease the number of compartments 140 as required. Further, the rack 112 can also be modularly configured to accommodate cassettes of different sizes and dimensions. Furthermore, multiple racks can also be arranged adjacent with different cassette configurations.

[0056] The support structures 114 are positioned on either side of the rack 112 to provide additional strength and stability to the entire assembly. The support structures 114 are engineered to distribute the weight of the fully loaded rack 112 evenly, preventing deformationor structural failure. The support structures 114 may be fabricated from high-strength materials and can incorporate reinforcement features such as, but not limited to, gussets or cross-bracing for enhanced structural integrity. Alternative designs may include adjustable support structures (not shown) to allow for levelling on uneven surfaces or to accommodate different rack configurations. In alternative embodiments, the support structures 114 could incorporate shock-absorbing materials to mitigate vibrations and protect the electrical energy storage devices from mechanical and environmental stress.

[0057] The panel 120 serves as a protective shield for the frame 110 and internal components of the station 100. It is designed to prevent the ingress of dust, debris, moisture, and other contaminants that could compromise the integrity of the electrical energy storage device charging and interchange station 100. The panel 120 can be fabricated from various materials such as metal, polycarbonate, or other suitable materials that offer durability and weather resistance. In additional embodiments, the panel 120 may incorporate ventilation features, access doors, or removable sections to facilitate maintenance and inspection of internal components.

[0058] Referring to FIGs. 2 to 5, the thermal system 130 is shown to be mounted on the operational top of the rack 112. The thermal system 130 is positioned on the operational top of the rack 112 and is responsible for regulating the temperature within the electrical energy storage device charging and interchange station 100. It is designed to maintain the internal environment within the optimal operational range for the electrical energy storage devices. The thermal system 130 incorporates one or more air passage openings 132 at the operational front and rear of the station 100, allowing for efficient air circulation and heat dissipation. The positioning of these openings can be customised based on specific requirements, potentially including side vents or adjustable louvres for optimised airflow control. Additional embodiments may incorporate filtration systems within these openings to prevent dust and debris from entering the station.

[0059] In the present embodiment, the thermal system 130 is provided with a Heating, Ventilation, and Air Conditioning (HVAC) system comprising a heater, a compressor, a condenser, and an evaporator (not shown). In an alternate embodiment, the thermal system 130 may include various cooling technologies such as forced air cooling, liquid cooling, or thermoelectric cooling to maintain optimal operating temperatures for the electrical energy storage devices in the racks 112.

[0060] The thermal unit 130 is functionally coupled to the RSU 190 and is configured to receive instructions from the RSU 190 to regulate the temperature within the station 100 based on the inputs from the thermal sensors placed within the station 100 (not shown).

[0061] The compartment 140 is designed to accommodate a cassette containing electrical energy storage devices. Each compartment is equipped with a pair of rails and a receptacle for secure placement of the cassette. The compartment design can be modular, allowing for adjustments to accommodate different cassette sizes or configurations. The compartment 140 can include smart sensors within each compartment to monitor individual cassette conditions. The compartment 140 can include Radio Frequency Identification (RFID) technology for automated cassette identification and tracking.

[0062] The uninterruptible power supply (UPS) 150 is provided to ensure the continuous operation of the station 100 during power interruptions. During operations of the electrical energy storage device charging and interchange station 100, power disconnections to the electronic components of the station 100 can result in the loss of important functions such as, but not limited to, data collection, backup, sensor monitoring, and thermal monitoring. The UPS 150 provides backup power to essential electronic components, maintaining critical functions such as, but not limited to, data collection, sensor monitoring, and thermal regulation. In alternative embodiments, the UPS 150 could be integrated with renewable energy sources, such as, but not limited to, solar panels or wind turbines, to enhance the station's energy independence and sustainability. In addition to traditional battery -based UPS systems, the UPS 150 can use supercapacitors and / or flywheel energy storage for faster response times and longer operational lifespans.

[0063] In an embodiment herein, any one of the cassettes 200 present in the station 100 can be selected based on pre-configured instructions to serve as a UPS and supply electrical energy to the electrical components of the electrical energy storage device charging and interchange station 100 in case of power interruptions.

[0064] In another embodiment herein, any one of the cassettes 200 present in the station 100 can be selected based on pre-configured instructions to supply electrical energy to another cassette for charging.

[0065] The power distribution unit (PDU) 160 manages the distribution of electrical energy within the station 100. It receives power from the grid and efficiently allocates it to various components, including the rack distribution unit (RDU) 192 and other electricalsystems. The PDU 160 may incorporate smart power management features to optimise energy consumption and reduce operational costs. Advanced versions of the PDU 160 could include features such as power quality monitoring, fault detection, and remote management capabilities.

[0066] The RDU 192 works in conjunction with the PDU 160 to supply the necessary electrical energy to each compartment 140 and cassette 200. The RDU 192 may incorporate intelligent load balancing algorithms to optimise charging efficiency across multiple cassettes 200 simultaneously.

[0067] In an alternative embodiment, the PDU 160 and the RDU 192 can be integrated into a single unit for a single rack system, while they may remain separate units in a multiple rack system.

[0068] The charging unit 170 is responsible for converting and regulating the electrical energy supplied to the electrical energy storage devices within the cassettes 200. The charging unit 170 includes rectifiers and charge control circuits to ensure safe and efficient charging. The charging unit 170 may comprise modular components to allow for easy upgrades as charging technologies advance.

[0069] As shown in FIGs. 4-5, each rack 112 is provided with the RSU 190 to monitor the rack parameters and provide inputs based on the predetermined instructions. The RSU 190 is functionally coupled to the thermal system 130, the UPS 150, the PDU 160, the RDU 192, the charging unit 170, and a plurality of sensors. The RSU 190 monitors the inputs from the thermal sensors provided in the electrical energy storage device charging and interchange station 100. Based on the inputs from the thermal sensors, the RSU 190 generates an output signal that is sent to the thermal system 130 for temperature regulation. Further, the RSU 190 is functionally connected to the electrical sensors (not shown) in the rack 112, wherein the electrical sensors monitor the electrical energy storage devices in the rack. Based on the input from the electrical sensors, the RSU 190 decides whether to charge the electrical energy storage device or not. The charging may vary depending on the amount of charge required by the electrical energy storage device, the electrical energy storage device temperature, the duration of charge, and other parameters. Based on the requirement, the RSU 190 generates and transfers the output signal to the RDU 192 to supply electrical energy to the specific electrical energy storage device. In an embodiment herein, the RSU 190 also receives data from the sensors and other components of the electrical energy storage device charging and interchange station 100and stores the received data in a memory storage unit (now shown). Further, the stored data is transferred to the cloud data storage for the operator’s access and monitoring. The RSU 190 can include machine learning algorithms for predictive maintenance or optimisation of charging cycles based on historical data and usage patterns.

[0070] The rear view of the electrical energy storage device charging and interchange station 100 showcases the interconnection between the components (as disclosed herein). The thermal system 130 maintains optimal operating conditions in the electrical energy storage device charging and interchange station 100, while the UPS 150 ensures uninterrupted operation of the electrical energy storage device charging and interchange station 100. The PDU 160 and the RDU 192 work together to distribute power effectively, with the charging unit 170 facilitating the actual charging process. The RSU 190 oversees and coordinates the functions of all these components, ensuring smooth and efficient operation of the entire system.

[0071] Referring to FIGs. 3 to 5, the compartments 140 feature one or more fluid connectors 142 and one or more electrical connectors 144 at the operational rear end of the compartments 140, facilitating the transfer of cooling fluid and electrical energy to the cassettes 200, respectively. The fluid connector 142 and the electrical connector 144 are designed to engage with corresponding connectors on the cassette 200 when fully inserted. The fluid connector enables the circulation of cooling fluid to regulate the temperature of the electrical energy storage device during charging. The electrical connector supplies the required electrical energy to the electrical energy storage device for storage and utilisation. The compartment can include quick-connect fittings for faster cassette exchanges. The compartment can include selfsealing connectors to prevent fluid leakage, on a cassette being removed.

[0072] In an embodiment herein, the fluid connector 142 and the electrical connector 144 can be separate units.

[0073] In an embodiment herein, the fluid connector 142 and the electrical connector 144 can be an integrated unit, which can result in space savings within the cassette 200 and the electrical energy storage device charging and interchange station 100.

[0074] FIG. 6 depicts the sectional front of compartment 140. Each compartment 140 is configured to accommodate a cassette 200 in each compartment 140. Each compartment is provided with a pair of rails 146 and a receptacle 148 designed to facilitate smooth insertion and secure placement of the cassette within the compartment of the rack. The rails 146 are configured with a dual-section design, comprising a vertical section and a horizontal section.This configuration allows for precise engagement with the guide rollers and load rollers provided on the external lower surface of the cassette. The vertical section of the rails 146 is specifically engineered to interact with the guide rollers, ensuring proper alignment and preventing lateral movement of the cassette during insertion. The horizontal section of the rails 146 is designed to support the load rollers, effectively distributing the weight of the cassette and minimising friction during the insertion and extraction process. The dual-section design of the rails 146 contributes significantly to the ease of operation and reduces wear on both the cassette and the compartment components.

[0075] The receptacle 148 is positioned at the operational front of the compartment 140 and is configured to accommodate an arrester provided on the cassette 200. The primary function of the receptacle 148 is to secure the cassette 200 in its fully inserted position within the compartment 140, preventing unintended movement or displacement during charging operations or external vibrations. The receptacle 148 features a depression or cavity that is precisely shaped to receive the engaging portion of the arrester mechanism on the cassette. This depression ensures a snug fit and positive locking action when the cassette is fully inserted. The design of the receptacle 148 allows for easy engagement and disengagement of the arrester, facilitating quick and efficient cassette interchange when required. During the removal of the cassette 200 from the compartment 140, the arrester on the cassette needs to be operated either manually in case of a Manual battery handling system (MBHS) or automatically in case of an Automatic battery handling system (ABHS) to disengage the receptacle 148.

[0076] The Battery Handling System (BHS) refers to the equipment and processes used for the safe, efficient, and organized management, storage, transport, loading / unloading, and maintenance of battery packs / cassettes, particularly in charging and interchange stations.

[0077] Manual Battery Handling System (MBHS) relies on human intervention with basic mechanical aids such as Manual trolleys, manually operated stackers, hoists, or carts

[0078] Automatic Battery Handling System (ABHS) employs automation and robotics such as Automated guided vehicles (AGVs) or robotic arms for minimal human involvement.

[0079] In alternative embodiments, the rail system can be further enhanced to accommodate various cassette sizes and configurations. For instance, the rails 146 could be mounted on actuators, which enable the width of the compartment to be adjusted, allowing the compartment to adapt to different cassette dimensions. Additionally, the rails 146 could be equipped with low-friction coatings or roller bearings to further reduce insertion and extractionforces. The receptacle 148 can also comprise a spring-loaded mechanism (not shown) to provide a more positive engagement with the arrester and to compensate for any wear over time.

[0080] The rail system can comprise one or more positioning sensors (not shown), which can be integrated along the rails 146 to detect the position and proper alignment of the cassette during insertion. The positioning sensors could provide feedback to the RSU 190 to ensure correct placement before initiating charging operations. Furthermore, the receptacle 148 can be equipped with an electronic locking mechanism (not shown) that interfaces with the RSU 190, allowing for remote-controlled locking and unlocking of the cassette for enhanced security and automated operations.

[0081] In an embodiment herein, the cassette 200 can be inserted into the compartment 140 or extracted from the compartment 140 manually using a manual battery handling system (MBHS) (such as, but not limited to, a stacker) (not shown). In an embodiment herein, the cassette 200 can be inserted into the compartment 140 or extracted from the compartment 140 automatically by an automatic battery handling system (ABHS) (not shown).

[0082] In an embodiment herein, dampers (such as, but not limited to, bump pads, and so on) (not shown) are provided internal to the compartment to prevent metal -to-metal contact of the cassette to the internal structure of an electrical energy storage device charging and interchange station 100.

[0083] Referring to FIGs. 7-9, the charging unit 170 is located at the operational rear end of the rack 112. The charging unit 170 comprises multiple rectifiers and a charge control circuit (not shown). The charging unit 170 can convert AC power from the grid to DC power suitable for charging the electrical energy storage devices. In an embodiment herein, each compartment 140 may be provided with a dedicated charging unit (not shown) for supplying electrical energy to the electrical energy storage device placed within the cassette 200 during charging. The charging unit 170 can have bidirectional charging capabilities, allowing the station to participate in vehicle-to-grid (V2G) energy systems.

[0084] The charging unit 170 comprises the electrical connector 172 and the fluid connector 171, enabling simultaneous energy transfer and thermal management during the charging process. This dual -connector interface enhances the safety and performance of the charging operation by regulating the temperature of the electrical energy storage devices, while the energy storage devices are being charged.

[0085] The fluid connector 171 enables the circulation of cooling fluid to regulate the temperature of the charging unit 170. The electrical connector 172 enables receiving electrical energy from RDU 192 through the charge control circuit and transfer the received energy to the electrical energy storage device(s) in the cassette 200.

[0086] FIG. 7 depicts the charging unit 170 mounted on the charging unit placement system 165, located at the operational end of rack 112. The charging unit placement system 165 includes a tray 173 for placement of the charging unit 170. The tray 173 is supported by a draw slide 174 on either side of the longitudinal edges of the tray 173, which in turn is supported on a plurality of supporting arms 180 of the rack 112, allowing for easy access and maintenance of the charging unit 170 (as shown in FIG. 8). The tray 173 serves as a platform for mounting the charging unit 170. The tray 173 can provide a stable and secure base for the charging unit while allowing for easy sliding in and out of the rack structure. The tray 173 can be fabricated from durable materials (such as, but not limited to, steel, aluminium, composite materials, and so on) to withstand the weight of the charging unit and resist corrosion.

[0087] The plurality of supporting arms 180 is provided at the operational rear end of the rack 112, wherein the plurality of supporting arms 180 are configured to accommodate a draw slide 174. The draw slide 174 facilitates the movement of the tray 173 and, consequently, the charging unit 170. The supporting arm 180 is equipped with a plurality of external rollers 182 placed internally to the supporting arm 180 and configured to support the draw slide 174 from sliding in and out of the supporting arm 180. The external rollers 182 work in conjunction with the internal rollers 177 to create a low-friction system for extending and retracting the charging unit. In an embodiment herein, linear bearings or other low-friction sliding mechanisms (may be used in place of the external rollers) to achieve smoother operation and increased load-bearing capacity. In an embodiment herein, the supporting arms 180 are constructed from robust materials capable of withstanding the weight and dynamic loads associated with the charging unit and its movement. In an embodiment herein, the supporting arms 180 may incorporate vibration-damping features, such as, but not limited to, damping pads, elastic devices (such as, but not limited to, springs, and so on), and so on. In an embodiment herein, the supporting arms 180 may incorporate adjustable mounting points to accommodate different rack configurations.

[0088] The draw slide 174 comprises an outer member 175 and an inner member 176. The outer member 175 is configured to accommodate the inner member 176 such that the inner member 176 can slide in and out of the outer member 175. The inner member 176 is equippedwith a plurality of internal rollers 177 mounted on the outer surface of the inner member 176 such that the internal rollers 177 roll on the horizontal inner surface of the outer member 175.

[0089] The draw slide 174 is further provided with a primary stopper 178 and a secondary stopper 179. The primary stopper 178 is provided on the internal surface of the inner member 176. The primary stopper 178 is configured to restrict the movement of the inner member 176 from over-insertion and over-drawing within the outer member 175. The secondary stopper 179 is provided on the outer surface of the outer member 175. The secondary stopper 179 is configured to restrict the movement of the outer member 175 from over-insertion and over-drawing with the supporting arm 180. This safety feature prevents accidental separation of the draw slide components and ensures that the charging unit remains securely attached to the rack structure. The draw slide 174 can incorporate adjustable stoppers. The draw slide 174 can incorporate electromagnetic locking mechanisms for added flexibility and security.

[0090] The assembly process for the charging unit placement system 165 involves attaching the tray 173 to the inner member 176 of the draw slide 174. The draw slide assembly is inserted into the supporting arms 180, with the external rollers 182 providing guidance and support. The outer member 175 of the draw slide is then secured to the supporting arms, ensuring that the secondary stopper 179 is properly positioned to limit the extension range. The entire assembly is installed into the rack structure of the electrical energy storage device charging and interchange station. Finally, the charging unit 170 is securely mounted onto the tray 173.

[0091] Referring to FIG. 10, the operation of the charging process involving the cassette 200 and the station 100 follows a structured sequence of actions 1000. In step 1001, the cassette 200 containing an electrical energy storage device is inserted into an available compartment 140 within the rack 112 by the mechanical or automated battery handling system (MBHS / ABHS) (not shown). In step 1002, following insertion of the cassette into the compartment 140, the station 100 detects the presence of the newly inserted cassette 200 and initiates the charging process. In step 1003, the PDU 160 and the RDU 192 then work in coordination to supply the appropriate electrical energy to the charging unit 170. In step 1004, the charging unit 170 converts and regulates the supplied electrical energy to charge the electrical energy storage device within the cassette 200. In step 1005, the thermal system 130 continuously monitors and regulates the temperature within the station 100 throughout the charging process, to ensure optimal charging conditions. In step 1006, the uninterruptiblepower supply (UPS) 150 provides backup power in case of grid interruptions, to ensure uninterrupted operation of critical systems. In step 1007, the station 100 enables removal of the fully charged cassette 200 and its replacement with another once the charging is complete, thereby allowing for continuous operation. The various actions in method 1000 may be performed in the order presented, in a different order or simultaneously. Further, in some embodiments, some actions listed in FIG. 10 may be omitted.

[0092] FIG. 11 illustrates a method 2000 of docking and undocking the cassette within the compartment. The method involves a precise sequence of guided movements. In step 2001, the operation begins with aligning the cassette with the compartment opening, ensuring that the guide rollers are correctly positioned to engage with the vertical section of the rails 146. In step 2002, the cassette insertion is initiated once the cassette is aligned with the rails 146, allowing the guide rollers to make contact with the vertical section of the rails 146, thereby establishing proper alignment for further movement. In step 2003, the load rollers engage with the horizontal section of the rails 146 as insertion continues, taking on the weight of the cassette and enabling smooth and stable motion. In step 2004, the cassette slides along the rails 146 until it reaches the fully inserted position within the compartment. In step 2005, the arrester mechanism integrated into the cassette automatically engages with the receptacle 148 upon reaching this final position, to secure cassettes placement. In step 2006, the receptacle 148 holds the cassette firmly in place, preventing any unintended movement during the charging process. In step 2007, the arrester mechanism is disengaged (either manually or automatically) from the receptacle 148 for cassette removal. In step 2008, the cassette is smoothly extracted along the rails 146, guided by both the vertical and horizontal sections, until the cassette is completely removed from the compartment . The various actions in method 2000 may be performed in the order presented, in a different order or simultaneously. Further, in some embodiments, some actions listed in FIG. 11 may be omitted.

[0093] FIG. 12 illustrates a method 3000 of extension and retraction of the charging unit placement system 165 for accessing the charging unit 170. The method involves a controlled and sequential mechanism designed for ease of maintenance and operational safety. In step 3001, an operator initiates the extension of the tray 173 when maintenance or inspection of the charging unit 170 is required. In step 3002, the inner member 176 slides out of the outer member 175, supported by internal rollers 177, until the primary stopper 178 engages, restricting further movement. In step 3003, the outer member 175 slides out from the supporting structure, guided by external rollers 182, until the secondary stopper 179 is engaged, if furtherextension is needed. In step 3004, the charging unit 170 becomes fully accessible for maintenance or replacement operations at full extension,. In step 3005, the process is reversed in a controlled manner; i.e., first retracting the outer member 175, followed by the inner member 176 once the required tasks are completed,. In step 3006, the sequence concludes with the re-engagement of the fluid connector 171 and electrical connector 172, thereby restoring full functionality to the charging unit 170. The various actions in method 3000 may be performed in the order presented, in a different order or simultaneously. Further, in some embodiments, some actions listed in FIG. 12 may be omitted.

[0094] Alternative embodiments of the charging unit and tray assembly may incorporate additional features such as, but not limited to, integrated cable management systems, quick-disconnect connectors for rapid charging unit replacement, or advanced cooling systems to optimise thermal management. The modular design of this assembly allows for easy upgrades and modifications to accommodate future advancements in charging technology or changes in electrical energy storage device specifications.

[0095] Unlike advanced and automated electrical energy storage device interchange technologies, which often suffer from high initial costs, technical dependencies, and a lack of adaptability, an electrical energy storage device charging and interchange station as disclosed herein offers a more straightforward and flexible approach. By addressing the need for accommodating multiple electrical energy storage device capacities, electrical energy storage device charging and interchange stations as disclosed herein can enhance the efficiency and accessibility of EV charging infrastructure, facilitating broader EV adoption and contributing to a more sustainable transportation ecosystem.

[0096] Embodiments herein disclose an electrical energy storage device charging and interchange station that is efficient, reliable, and adaptable.

[0097] Embodiments herein disclose an electrical energy storage device charging and interchange station that is modular, easy to operate, and maintain.

[0098] Embodiments herein disclose an electrical energy storage device charging and interchange station that has a low cost of investment.

[0099] The embodiments described above have several technical advantages, including but not limited to, the realisation of an electrical energy storage device charging and interchange station,- that accommodates electrical energy storage devices of varying sizes, capacities, and configurations, thereby enabling compatibility with a broader range of electric vehicle types;- that facilitates faster turnaround times through automated interchange mechanisms, thereby reducing vehicle downtime and improving user convenience;- that supports interoperability with electric vehicles from multiple original equipment manufacturers (OEMs), eliminating the need for proprietary interfaces;- that employs intelligent control systems to manage charging cycles, load balancing, and operational scheduling for enhanced energy efficiency;- that integrates modular architecture, allowing for scalable deployment based on location-specific demand and future expansion.- that reduces dependency on high-rate fast charging, thereby minimising electrical energy storage device degradation and enhancing lifecycle performance;- that provides seamless switching between charging and interchange operations based on vehicle requirements and station load;- that is capable of interfacing with renewable energy sources or smart grid systems for optimised power consumption and environmental sustainability;- that includes real-time diagnostics and monitoring systems for operational transparency, predictive maintenance, and safety assurance; and- that incorporates user-friendly interfaces and automated workflows to ensure ease of operation with minimal human intervention.

[0100] The embodiments disclosed herein can be implemented through at least one software program running on at least one hardware device and performing network management functions to control the network elements. The elements include blocks which can be at least one of a hardware device, or a combination of hardware device and software module.

[0101] The embodiments disclosed herein describe a dock for an electric vehicle that provides secure mounting of electrical energy storage devices. Therefore, it is understood that the scope of the protection is extended to such a program and in addition to a computer readable means having a message therein, such computer readable storage means contain program codemeans for implementation of one or more steps of the method, when the program runs on a server or mobile device or any suitable programmable device. The method is implemented in at least one embodiment through or together with a software program written in e.g., Very high speed integrated circuit Hardware Description Language (VHDL) another programming language, or implemented by one or more VHDL or several software modules being executed on at least one hardware device. The hardware device can be any kind of portable device that can be programmed. The device may also include means which could be e.g., hardware means like e.g., an ASIC, or a combination of hardware and software means, e.g., an ASIC and an FPGA, or at least one microprocessor and at least one memory with software modules located therein. The method embodiments described herein could be implemented partly in hardware and partly in software. Alternatively, the invention may be implemented on different hardware devices, e.g., using a plurality of CPUs.

[0102] The foregoing description of the specific embodiments will so fully reveal the general nature of the embodiments herein that others can, by applying current knowledge, readily modify and / or adapt for various applications such specific embodiments without departing from the generic concept, and, therefore, such adaptations and modifications should and are intended to be comprehended within the meaning and range of equivalents of the disclosed embodiments. It is to be understood that the phraseology or terminology employed herein is for the purpose of description and not of limitation. Therefore, while the embodiments herein have been described in terms of embodiments and examples, those skilled in the art will recognize that the embodiments and examples disclosed herein can be practised with modification within the scope of the embodiments as described herein.

Claims

STATEMENT OF CLAIMSWe claim:

1. An electrical energy storage device charging and interchange station (100), comprising: a frame (110) defining a rack (112); at least one compartment (140) configured within the rack (140) to accommodate a cassette (200); a thermal system (130) mounted on the operational top of the rack (112) and configured to regulate temperature within the station (100); a charging unit (170) configured to convert and regulate electrical energy for charging the electrical energy storage devices; a rack supervising unit (190) operatively connected to the at least one compartment, the thermal system (130) and the charging unit (170), wherein the rack supervising unit (190) is configured to monitor and control operations of the station (100); a power distribution unit (160) configured to manage the distribution of electrical energy within the station (100); and a rack distribution unit (192) operatively connected to the power distribution unit (160) and configured to supply electrical energy to the at least one compartment (140) and the cassette (200).

2. The electrical energy storage device charging and interchange station (100) as claimed in claim 1, wherein the frame (110) defining the rack (112) is supported by a pair of support structures (114) positioned on either side of the rack (112).

3. The electrical energy storage device charging and interchange station (100) as claimed in claim 1, wherein the at least one compartment (140) comprises: a pair of rails (146) configured to facilitate insertion and extraction of the cassette (200); and a receptacle (148) configured to secure the cassette (200) in a fully inserted position.

4. The electrical energy storage device charging and interchange station (100) as claimed in claim 3, wherein the pair of rails (146) comprises: a vertical section configured to interact with guide rollers of the cassette (200); anda horizontal section configured to support load rollers of the cassette (200).

5. The electrical energy storage device charging and interchange station (100) as claimed in claim 1, wherein the thermal system (130) comprises at least one air passage opening (132) at an operational front and rear of the station (100) to facilitate air circulation and heat dissipation.

6. The electrical energy storage device charging and interchange station (100) as claimed in claim 1, wherein the charging unit (170) is mounted on a charging unit placement system (165) having a tray (173) supported by a draw slide (174) to facilitate maintenance access.

7. The electrical energy storage device charging and interchange station (100) as claimed in claim 6, wherein the draw slide (174) comprises: an outer member (175); an inner member (176) configured to slide within the outer member (175); a plurality of internal rollers (177) mounted on an outer surface of the inner member (176); a primary stopper (178) provided on an internal surface of the inner member (176); and a secondary stopper (179) provided on an outer surface of the outer member (175).

8. The electrical energy storage device charging and interchange station (100) as claimed in claim 1, wherein the system further comprises an uninterruptible power supply (150) configured to provide backup power during power interruptions.

9. The electrical energy storage device charging and interchange station (100) as claimed in claim 1, wherein the uninterruptible power supply (150) is configured to select one of the cassettes (200) present in the station (100) to serve as a power source during power interruptions.

10. The electrical energy storage device charging and interchange station (100) as claimed in claim 1, wherein the at least one compartment (140) further comprises: a fluid connector (142) configured to transfer cooling fluid to the cassette (200); and an electrical connector (144) configured to transfer electrical energy to the cassette (200).

11. The electrical energy storage device charging and interchange station (100) as claimed in claim 1, wherein the rack (112) is modularly configured to accommodate cassettes (200) of different sizes and dimensions.

12. The electrical energy storage device charging and interchange station (100) as claimed in claim 1, wherein the frame (110) is externally enclosed by a plurality of panels (120).

13. The electrical energy storage device charging and interchange station (100) as claimed in claim 1, wherein the thermal system (130) comprises a heating, ventilation, and air conditioning (HVAC) system.

14. The electrical energy storage device charging and interchange station (100) as claimed in claim 1, wherein the rack supervising unit (190) is further configured to: monitor inputs from thermal sensors and electrical sensors within the station (100); generate output signals to control the thermal system (130) and the charging unit (170) based on the monitored inputs; and store and transfer operational data to a cloud storage for remote access and monitoring.

15. The electrical energy storage device charging and interchange station (100) as claimed in claim 1, wherein the station (100) is configured to accommodate multiple racks (112) arranged adjacently with different cassette configurations.

16. The electrical energy storage device charging and interchange station (100) as claimed in claim 1, wherein the cassette (200) is configured to be inserted into or extracted from the compartment (140) using one of a manual battery handling system (MBHS) and an automatic battery handling system (ABHS).

17. An electrical energy storage device charging and interchange method, comprising: detecting insertion of a cassette (200) containing an electrical energy storage device into a compartment (140) of an electrical energy storage device charging and interchange station (100); initiating a charging process for the inserted electrical energy storage device; supplying electrical energy to a charging unit (170) via a power distribution unit (160) and a rack distribution unit (192);converting and regulating the supplied electrical energy by the charging unit (170) to charge the electrical energy storage device; monitoring and regulating temperature within the station (100) using a thermal system (130); and controlling the charging process and temperature regulation using a rack supervising unit (190).

18. The method as claimed in claim 17, wherein the method further comprises modularly configuring a rack (112) to accommodate cassettes (200) of different sizes and dimensions.

19. The electrical energy storage device charging and interchange method as claimed in claim 17, wherein the method further comprises: securing the cassette (200) in a fully inserted position within the compartment (140) using a receptacle (148) configured to engage with an arrester mechanism of the cassette (200).

20. The electrical energy storage device charging and interchange method as claimed in claim 17, wherein the method further comprises: extending a charging unit (170) mounted on a tray (173) supported by a draw slide (174) of a charging unit placement system (165) for maintenance access.

21. The method as claimed in claim 17, wherein the method further comprises storing and transferring operational data to cloud storage for remote access and monitoring.

22. The method as claimed in claim 17, wherein the method further comprises providing backup power to critical systems of the station (100) using an uninterruptible power supply (150) during grid interruptions.

23. The method as claimed in claim 22, wherein the method further comprises selecting a cassette (200) present in the rack (112) to serve as an uninterruptible power supply based on pre-configured instructions during power interruptions.

24. A compartment (140) in an electrical energy storage device charging and interchange station (100), comprising: a pair of rails (146) configured to facilitate insertion and extraction of a cassette (200) containing multiple electrical energy storage devices, wherein the pair of rails (146) comprises:a vertical section configured to interact with guide rollers of the cassette (200); and a horizontal section configured to support load rollers of the cassette (200); a receptacle (148) configured to secure the cassette (200) in a fully inserted position; a fluid connector (142) configured to transfer cooling fluid to the cassette (200); and an electrical connector (144) configured to transfer electrical energy to the cassette (200).

25. The compartment (140) as claimed in claim 24, wherein the vertical section and the horizontal section of the rails (146) are configured to form a dual-section design for proper alignment and weight distribution of the cassette (200).

26. The compartment (140) as claimed in claim 24, wherein the receptacle (148) comprises a depression or cavity shaped to receive an engaging portion of the arrester mechanism on the cassette (200).

27. The compartment (140) as claimed in claim 24, wherein the compartment further comprises an integrated electrical and fluid connector configured to save space within the cassette (200) and the station (100).

28. A method for inserting a cassette (200) into a compartment (140) of an electrical energy storage device charging and interchange station (100), comprising: aligning the cassette (200) with an opening of the compartment (140); initiating insertion of the cassette (200), wherein guide rollers of the cassette (200) engage with a vertical section of rails (146) in the compartment (140); continuing insertion of the cassette (200), wherein load rollers of the cassette (200) engage with a horizontal section of the rails (146); sliding the cassette (200) along the rails (146) until the cassette (200) reaches a fully inserted position within the compartment (140); engaging an arrester mechanism of the cassette (200) with a receptacle (148) in the compartment (140) to secure the cassette (200) in the fully inserted position; andconnecting the cassette (200) to a fluid connector (142) and an electrical connector (144) in the compartment (140).

29. The method as claimed in claim 28, further comprising disengaging the arrester mechanism from the receptacle (148) for removal of the cassette (200) from the compartment (140).

30. The method as claimed in claim 28, further comprising adjusting the compartment (140) configuration to accommodate cassettes (200) of varying sizes and capacities.

31. A charging unit placement system (165) in an electrical energy storage device charging and interchange station (100), comprising: a tray (173) configured to support a charging unit (170); a draw slide (174) configured to support the tray (173), wherein the draw slide (174) comprises: an outer member (175); an inner member (176) configured to slide within the outer member (175); a plurality of internal rollers (177) mounted on an outer surface of the inner member (176); a primary stopper (178) provided on an internal surface of the inner member (176); and a secondary stopper (179) provided on an outer surface of the outer member (175); and a plurality of supporting arms (180) configured to accommodate the draw slide (174).

32. The charging unit placement system (165) as claimed in claim 31, wherein the plurality of supporting arms (180) comprises external rollers (182) configured to support the draw slide (174).

33. The charging unit placement system (165) as claimed in claim 31, wherein the primary stopper (178) and the secondary stopper (179) are configured to restrict movement of the inner member (176) and the outer member (175), respectively.

34. The charging unit placement system (165) as claimed in claim 31, wherein the tray (173) is fabricated from one of steel, aluminium, and composite materials.

35. A method for operating a tray assembly in an electrical energy storage device charging and interchange station (100), comprising: initiating extension of a tray assembly supporting a charging unit (170); sliding an inner member (176) of a draw slide (174) out of an outer member (175) until a primary stopper (178) engages; extending the outer member (175) from a supporting structure until a secondary stopper (179) engages; providing full access to the charging unit (170) for maintenance or replacement operations; retracting the outer member (175) and the inner member (176) in a reverse sequence; and re-engaging fluid and electrical connectors to restore functionality to the charging unit (170).

36. The method as claimed in claim 35, wherein the tray assembly extension process is initiated for maintenance or inspection of the charging unit (170).

37. The method as claimed in claim 35, further comprising incorporating vibration-damping features in the supporting arms (180) to reduce mechanical disturbances during tray assembly operation.

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