A portable energy storage device

Abstract

The present invention discloses a portable energy storage device The device consists of a series of power cells (102) securely held in position by cell holders (104) with extensions (106) and apertures (108), forming a power cell stack (112). A thermal conductive plate (114) facilitates the distribution and dissipation of thermal energy, while a thermal barrier (116) provides insulation against temperature fluctuations. Mechanical protection and structural integrity are ensured by end covers (120) with extensions (122) and apertures (124). An electronic control unit (130) manages and monitors the power cells, positioned on top of the stack and enclosed by a top cover (136). A bottom cover (152) houses a charging / discharging unit (146), and casing (156) provides additional protection and structural support. This invention overcomes the limitations of prior art by offering improved thermal management, enhanced structural integrity, and efficient power cell control.

Description

A PORTABLE ENERGY STORAGE DEVICEThe following specification particularly describes the invention and the manner in which it is to be performed: -TECHNICAL FIELD

[0001] Embodiments disclosed herein relate to electric vehicles, and more particularly to portable energy storage device for electric vehicles.BACKGROUND

[0002] Tn recent years, there has been a growing demand for advanced energy storage solutions, particularly in the field of electric vehicles (EVs). As EV technology continues to evolve, there is a constant drive to enhance the performance and efficiency of energy storage device packs. The prior art has seen significant advancements in energy storage device technology, but there are still several deficiencies that need to be addressed to meet the increasing expectations of consumers and regulators alike.

[0003] One major deficiency in the prior art is the need for a higher energy density pack. By developing an energy storage device with higher energy density, it would be possible to significantly increase the driving range of electric vehicles without increasing the overall size or weight of the pack.

[0004] Furthermore, there is a demand for an upgraded energy storage device that can fit within the same form factor as the previous generation pack. This requirement is essential to ensure compatibility with existing EV models and infrastructure without requiring significant modifications. An upgraded pack that maintains the same form factor would enable seamless integration into current electric vehicles, avoiding costly redesigns and retooling.

[0005] Additionally, the prior art lacks a lightweight energy storage device solution. Reducing the weight of the pack is crucial to enhance overall vehicle efficiency, as it directly impacts factors such as acceleration, handling, and energy consumption. By developing a lightweight energy storage device, electric vehiclescan achieve improved performance and greater energy efficiency, leading to extended range and reduced environmental impact.

[0006] Another deficiency in the prior art is the need for an energy storage device that offers a higher driving range. Increasing the range of electric vehicles is crucial to overcome the range anxiety often associated with EV adoption. The energy storage device capable of providing an extended range would significantly enhance the practicality and appeal of electric vehicles for consumers, making them a more viable alternative to traditional internal combustion engine vehicles.

[0007] Safety is another critical aspect that needs to be addressed. Despite significant advancements, concerns about energy storage device safety persist. A high level of safety is paramount to gain public trust and confidence in electric vehicles. An improved energy storage device design should incorporate robust safety features to prevent thermal runaway, minimize the risk of fire or explosion, and ensure safe operation even under extreme conditions.

[0008] Meeting stringent regulatory' requirements is yet another deficiency in the prior ait. Electric vehicles must comply with various safety and performance standards set by regulatory bodies worldwide. It is essential to develop an energy storage device that meets these stringent requirements to ensure the widespread adoption of electric vehicles and compliance with relevant regulations.

[0009] Lastly, the prior art lacks a robust and all-weather energy storage device solution. Electric vehicles must be capable of performing optimally in diverse weather conditions, including extreme temperatures, heavy rain, or snow. An energy storage device that can withstand harsh environments and operate reliably under all weather conditions is vital to ensure the year-round usability and durability of electric vehicles.

[0010] Addressing these deficiencies in the prior art is critical to driving the adoption of electric vehicles and advancing the field of energy storage.

[0011] There is, therefore, felt a need to develop energy storage devices with higher energy density, upgraded form factor, lightweight, extended range, high safety standards, compliance with regulatory requirements, and robust all-weather capabilities.

[0012] Hence, there is a need in the art for solutions which will overcome the above mentioned drawback(s), among others.OBJECTS

[0013] The principal object of embodiments herein is to disclose a portable energy storage device.

[0014] Another object of embodiments herein is to disclose a portable energy storage device having higher energy density and higher efficiency.

[0015] Another object of embodiments herein is to disclose a portable energy storage device that is nimble yet robust.

[0016] Another object of embodiments herein is to disclose a portable energy storage device that has elevated safety standards.

[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.BRIEF DESCRIPTION OF FIGURES

[0018] 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:

[0019] FIG. 1 illustrates an isometric view of the portable energy storage device, according to embodiments as disclosed herein;

[0020] FIG. 2 illustrates an exploded view of the portable energy storage device, according to embodiments as disclosed herein;

[0021] FIG. 3 illustrates an isometric view of the cell stack of the portable energy storage device, according to embodiments as disclosed herein;

[0022] FIG. 4 illustrates an isometric view of the cell stack of the portable energy storage device, according to embodiments as disclosed herein;

[0023] FIG. 5 illustrates an exploded view of the cell stack of the portable energy storage device, according to embodiments as disclosed herein;

[0024] FIG. 6 illustrates an exploded view of the cell stack of the portable energy storage device, according to embodiments as disclosed herein;

[0025] FIG. 7 illustrates a sectional view of the cell stack of the portable energy storage device, according to embodiments as disclosed herein;

[0026] FIG. 8 illustrates an isometric view of the end cover of the portable energy storage device, according to embodiments as disclosed herein;

[0027] FIG. 9 illustrates an isometric view of the cell holder of the portable energy storage device, according to embodiments as disclosed herein;

[0028] FIG. 10 illustrates an isometric view of the Bottom safety separator of the portable energy storage device, according to embodiments as disclosed herein;

[0029] FIG. 11 illustrates an isometric view of the Bottom safety separator and bottom cover of the portable energy storage device, according to embodiments as disclosed herein;

[0030] FIG. 12 illustrates a sectional view of the Bottom safety separator and bottom cover of the portable energy storage device, according to embodiments as disclosed herein;

[0031] FIG. 13 illustrates an isometric view of the cell stack with top safety separator of the portable energy storage device, according to embodiments as disclosed herein;

[0032] FIG. 14 illustrates an isometric view of the cell stack with electronic control unit of the portable energy storage device, according to embodiments as disclosed herein;

[0033] FIG. 15 illustrates an isometric view of the top plate of the portable energy storage device, according to embodiments as disclosed herein; and

[0034] FIG. 16 illustrates an isometric view of the cell stack with the top plate of the portable energy storage device, according to embodiments as disclosed herein.DETAILED DESCRIPTION

[0035] 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 arc 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.

[0036] 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.

[0037] 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.

[0038] Embodiments herein may be described and illustrated in terms of blocks which 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 analog 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 other functions 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.

[0039] 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 componcnts / modulcs 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.

[0040] The accompanying drawings are used to help easily understand various technical features and it should be understood that the embodimentspresented 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 arc 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.

[0041] The embodiments herein achieve a portable energy storage device. Referring now to the drawings, and more particularly to FIGS. 1 through 16, where similar reference characters denote corresponding features consistently throughout the figures, there are shown embodiments.

[0042] As used in the present disclosure, the following terms are generally intended to have the meaning as set forth below, except to the extent that the context in which they are used indicates otherwise.Energy density: The energy density of an energy storage device refers to the amount of energy it can store per unit volume or weight.Power Cell: The power cell is the basic electrochemical unit that provides a source of electrical energy by direct conversion of chemical energy and consists of an assembly of electrodes, separators, electrolytes, containers, and terminals.Thermal runaway: Thermal runaway means a self-perpetuating and uncontrolled increase in temperature within a system. In the context of energy storage devices, such as batteries, thermal runaway typically occurs when an internal heat generation mechanism surpasses the system's ability to dissipate heat, leading to an escalating temperature rise.

[0043] Embodiments herein disclose a portable energy storage device for an electric vehicle. The portable energy storage device comprises a plurality of power cells, a plurality of cell holders, a plurality of thermal conductive plates, a plurality of thermal barriers, a plurality of end covers, an electronic control unit, a top cover, a bottom cover and a plurality of casings. The plurality of power cells are electrically connected in series. The plurality of cell holders are provided with openings to securely hold the corresponding power cell in position. The cell holdersare provided with a plurality of extensions having apertures. The extensions are projecting outward at operational corners of the cell holder. The cell holders are stacked parallel to each other to form a power cell stack. The power cell stack is secured using primary fasteners passing through the apertures. Each thermal conductive plate is interposed between the contiguous power cells on the obverse side. The thermal conductive plate is designed to facilitate the distribution and dissipation of thermal energy generated during operation. Each thermal barrier is interposed between the contiguous power cells on the reverse side and along the operational top portion of the power cell stack. The thermal barrier is configured to provide insulation against fluctuations in temperature. Each end cover is provided with a plurality of extension having aperture. The extensions having aperture are complimentary to the extensions having aperture of the cell holder. The end covers are placed on the operational front side and back side of the power cell stack. The end covers ensure mechanical protection and structural integrity of the power cell stack. The electronic control unit is placed on operational top of the power cell stack and electrically connected to the plurality of power cell. The electronic control unit is configured to manage and monitor the plurality of power cell. The top cover is positioned on operational top position of the power cell stack. The top cover encloses the electronic control unit. The bottom cover is located at the operational bottom of the power cell stack. The bottom plate has a charging / discharging unit. The charging / discharge unit is electrically connected to power cells via electronic control unit for charging and discharging power from the power cell. The plurality of casing covers the operational side portions of the power cell stack. The casing provides additional protection and structural support for the overall durability and longevity of the energy storage device.

[0044] In an embodiment, the portable energy storage device consists of a top plate. The top plate is placed on the top of the electronic control unit and provides mechanical protection to the electronic control unit.

[0045] In an embodiment, the portable energy storage device consists of a thermal runaway barrier placed on operational top of the thermal barrier. Thethermal runaway barrier provides insulation against the rapid and uncontrollable rise in temperature.

[0046] In an embodiment, the thermal barrier is further interposed between the operational sides of the power cell stack and the inner face of the casing.

[0047] In an embodiment, the portable energy storage device consists of a top safety separator and an electrical safety separator. The top safety separator and the electrical safety separ ator separated by a thermal barrier interposed in between them. The top safety separator and the electrical safety separator are positioned at the operational top portion of the power cell stack below the electronic control unit.

[0048] In an embodiment the top cover consists of a handle. The handle provides convenience of transportation. The top cover also consists of an electronic display unit for displaying parameters of the energy storage device.

[0049] In an embodiment the bottom cover consists of a clamping unit. The clamping unit provides secure placement of the energy storage device within a holder.

[0050] In an embodiment the portable storage device consists of a bottom plate removably affixed to the bottom cover. The bottom plate provides additional protection to the bottom portion of the pack and enhances aesthetics and safety.

[0051] In an embodiment the portable energy storage device consists of a bottom safety separator. The bottom safety separator is placed at operational bottom of the power cell stack above the bottom cover. The bottom safety separator provides physical barrier between the power cell stack and bottom cover.

[0052] In an embodiment the portable storage device consists of a plurality of dampers adhered to the outer portion of the end covers and top portion of the power cell stack. The dampers provide protection against external impact loads.

[0053] In an embodiment the portable energy storage device consists of a plurality of secondary fasteners. The secondary fasteners fasten the top cover, the casing and the bottom cover to provide structural integrity of the energy storage device.

[0054] In an embodiment the portable energy storage device consists of plurality of sensors, the sensors are selected from the group consisting of thermal sensor, pressure sensor, proximity sensor and the like.

[0055] In an embodiment, the end cover is selected from group of materials consisting of ceramics, metal and materials having flame-retardant properties for enhanced safety.

[0056] In an embodiment, thickness of the heat carrier plate is in the range of 0.15 mm to 0.25mm. further material for the heat carrier plate is selected from the group consisting of copper, aluminium, steel and material with high thermal conductivity.

[0057] In an embodiment, thickness of the thermal barrier plate is in the range of 1.3 mm to 1.5 mm. Further material for the thermal barrier plate is selected from the group consisting of glass wool, mineral wool, polyurethane foam, mica, ceramic silicone rubber and fiberglass cloth.

[0058] In an embodiment material for the casing is selected from the group consisting of metals, ceramic and alloys.

[0059] The following terms and corresponding reference numerals have been referred to herein:Portable energy storage device -100Power cells - 102Cell holder - 104Extension - 106Aperture - 108Opening - 110Power Cell stack - 1 12Thermal conductive plate - 114Thermal barrier - 1 16Thermal runaw ay barrier - 118End cover - 120Extension - 122Aperture - 124Primary fasteners - 126Top safety separator - 128Electronic control unit - 130Electrical safety separator - 132Top plate - 134Top cover - 136Handle - 138Electronic display unit - 140Bottom safety separator - 142Bottom cover - 144Charging / discharging unit - 146Clamping unit - 148Secondary fasteners - 150Bottom plate - 152Dampers - 154Plurality of casing - 156

[0060] The portable energy storage device (100) is designed for use in electric vehicles. The portable energy device (100) consists of a plurality of power cells (102) that are electrically connected in series. Typically, the power cells are selected from pouch cells.

[0061] Pouch cells have an anode and a cathode made of chemically active materials that undergo electrochemical reactions during charging and discharging. The electrodes are typically made of thin metal foils, such as aluminium for the cathode and copper for the anode. A separator is placed between the anode and cathode to prevent short circuits. The separator is typically a thin, porous material that allows for the movement of ions while preventing direct contact between the electrodes. Pouch cells use a liquid or gel electrolyte, which is a conductive substance that allows the flow of ions between the electrodes. The electrolyte facilitates the transfer of charged particles during the electrochemical reactions, enabling the storage and release of electrical energy. Pouch cells have distinctive flat, flexible pouch-like packaging. The pouch is usually made of a thin, flexible,and heat-sealable material, such as aluminium-laminated polymer films. These films provide a lightweight and compact structure for the cell.

[0062] To securely hold the power cells (102) in position, the energy storage device includes a stack of cell holders (104). The cell holders (104) have openings (110) designed to accommodate the power cells (102) and extensions (106) with apertures (108) that project outward at the operational comers as shown in Figure 9. The cell holders (104) are stacked parallel to each other to form a power cell stack (112) as shown in Figure 6. The cell stack (112) is secured using primary fasteners (126) passing through the apertures (108) as shown in Figure 14. Further the cell holders (104) arc provided with snap lock for snap locking on to the adjacent cell holder (104). The cell holder (104) is manufactured using flame retardant plastics.

[0063] To facilitate the distribution and dissipation of thermal energy generated during operation, a thermal conductive plate (114) is interposed between the contiguous power cells (102) on the obverse side of the stack as shown in Figures 5-7. This thermal conductive plate (114) is designed to efficiently manage the heat generated by the cells (102), ensuring proper temperature regulation and dissipation. The thickness of the thermal conductive plate (114) in the device (100) is typically maintained within the range of 0.15 mm to 0.25 mm. Furthermore, the material for the thermal conductive plate (114) is selected from a group consisting of copper, aluminum, stainless steel, or other materials with high thermal conductivity thereby ensuring effective heat distribution and dissipation within the device (100).

[0064] On the reverse side and along the operational top portion of the power cell stack (1 12), a thermal barrier (1 16) is interposed between the contiguous power cells as shown in figures 5-7. The thermal barrier (116) provides insulation against fluctuations in temperature, helping to maintain stable operating conditions for the power cells (102). The material thickness of the thermal barrier (116) is typically in the range of 1.3 mm to 1.5 mm. In an embodiment, the thermal barrier (116) is provided as a plate. A material for the thermal barrier (116) is one of glass wool, mineral wool, polyurethane foam, mica, ceramic silicone rubber, fiberglasscloth or a combination thereof. The aforementioned materials for thermal barrier (116) provide excellent insulation properties, maintaining stable temperature conditions and minimizing thermal energy loss. Furthermore, the thermal barrier (116) is positioned between the operational sides of the power cell stack (112) and the inner face of the casing (156). The aforementioned arrangement ensures efficient insulation and helps maintain stable temperature conditions within the device (100), protecting the power cells (102) and improving overall thermal management.

[0065] The energy storage device (100) includes a plurality of end covers (120) that provide mechanical protection and structural integrity to the power cell stack (1 12) as shown on Figure 5 and Figure 8. The end covers (120) have extensions (122) with apertures (124) as shown in Figure 8. The extensions (122) with apertures (124) are complementary to the extensions (106) of the cell holders (104). The end covers (120) are placed on the operational front and back sides of the power cell stack (112), ensuring the overall mechanical stability and protection of the device, the end cover (120) can be selected from a group consisting of ceramics, metal, and materials with flame-retardant properties thereby enhancing safety and durability, offering resistance to high temperatures and providing protection against potential fire hazards.

[0066] An electronic control unit [ECU] (130) is placed on the operational top of the power cell stack (112). The electronic control unit (130) is electrically connected to the plurality of power cells (102) and sensors (not shown). This electronic control unit (130) is responsible for managing and monitoring the power cells (102), ensuring their optimal performance and safety.

[0067] The ECU (130) monitors the voltage, current, and temperature of individual cells within the energy storage device (100). The ECU (130) continuously measures and tracks the cell parameters using sensors to ensure proper functioning and identify any abnormalities or potential issues. The ECU (130) uses algorithms and mathematical models to estimate the state of charge (SOC) of the energy storage device. SOC estimation helps determine the available energy in the energy storage device and provides accurate information about the remainingenergy storage device capacity. State of Health (SOH) Monitoring: The ECU (130) evaluates the state of health of the energy storage device (100) by analyzing various factors such as capacity fade, internal resistance, and aging effects. Monitoring SOH helps assess the overall health and performance degradation of the energy storage device (100) over time. The ECU (130) ensures that the voltage levels of individual cells in the energy storage device (100) are balanced. The ECU (130) can activate balancing circuits or techniques to equalize the charge levels of cells, optimizing the overall pack performance and extending the energy storage device (100) pack's lifespan. The ECU (130) implements safeguards to prevent overcharging or over-discharging of the energy storage device (100). The ECU (130) monitors the voltage levels and triggers appropriate actions to protect the power cells from potentially damaging conditions. The ECU (130) monitors the temperature of the energy storage device (100) using temperature sensor and implements thermal management strategies to maintain safe operating conditions. The ECU (130) may activate cooling or heating systems, control ventilation, or adjust charging rates to manage temperature variations within acceptable limits. The ECU (130) continuously monitors the energy storage device (100) for faults, malfunctions, or abnormal behaviour. The ECU (130) uses diagnostic algorithms and techniques to detect and identify any issues. Fault detection allows for timely intervention and preventive actions to ensure the safe and reliable operation of the energy storage device. The ECU (130) includes communication interfaces to interact with external systems, such as the vehicle's main control unit or external diagnostic tools. The interfaces enable data exchange, control commands, and system integration, facilitating seamless operation and integration within the overall system. The ECU (130) records important data and events related to energy storage device performance, charging / discharging history, faults, and diagnostic information. The ECU (130), is further configured to generate reports or provide data logs for analysis, maintenance, and performance optimization. The ECU incorporates safety features to ensure the energy storage device's safe operation. This may include short circuit protection, over-temperature protection, over-current protection, and other safety measures to mitigate potential risks and hazards.

[0068] The energy storage device (100) is provided with a top cover (136). The top cover (136) is positioned on the operational top of the power cell stack (112). The top cover (136) encloses the electronic control unit (130) and provides additional protection and structural support to the device (100), ensuring the integrity of the internal components.

[0069] At the operational bottom of the power cell stack (1 12). The bottom cover (152) houses a charging / discharging unit (146). The charging / discharging unit (146) is electrically connected to the power cells (102) through the electronic control unit (130) and allows for the controlled charging and discharging of power from the power cells (102).

[0070] To provide additional protection and structural support, a plurality of casings (156) are provided. The casing (156) covers the operational side portions of the power cell stack (1 12) as shown in Figure 2. The casing material (156) can be selected from a group consisting of metals, ceramics, and alloys. The aforementioned materials for casing (156) offer robustness, durability, and protection against external impacts, ensuring the longevity and structural integrity of the portable energy storage device (100).

[0071] The portable energy storage device (100) includes a top plate (134) positioned on top of the electronic control unit (130). The top plate (134) serves the purpose of providing mechanical protection to the electronic control unit (130), safeguarding it from potential physical impacts and ensuring its overall integrity.

[0072] In addition, the portable energy storage device (100) incorporates a thermal runaway barrier (118) located on the operational top of the thermal barrier (116). The thermal runaway barrier (118) acts as insulation, preventing rapid and uncontrollable rises in temperature that could potentially compromise the safety and functionality of the device (100).

[0073] The portable energy storage device (100) features a top safety separator (128) and an electrical safety separator (132). The top safety separator (128) and the electrical safety separator (132) are separated by the thermal barrier (116) and positioned at the operational top portion of the power cell stack (112), just below the electronic control unit (130). The thermal barrier (116) providesinsulation and separation between the two separators, enhancing safety and preventing potential issues related to electrical or thermal interactions.

[0074] The top cover (136) of the energy storage device (100) incorporates a handle (138) for convenient transportation. Additionally, the top cover (136) includes an electronic display unit (140) that provides users with information regarding various parameters of the energy storage device (100), such as energy storage device status, charging levels and other relevant data.

[0075] For secure placement within a holder or mounting system, the bottom cover (152) of the energy storage device consists of a clamping unit (148). The clamping unit (148) ensures that the energy storage device (100) remains securely in place, minimizing movement or displacement during operation or transportation.

[0076] To provide additional protection and enhance aesthetics and safety, the portable storage device (100) includes a bottom plate (144) that can be removably affixed to the bottom cover (152). The bottom plate serves as an extra layer of protection for the bottom portion of the cell stack (102), adding to the overall durability and visual appeal of the device.

[0077] At the operational bottom of the power cell stack (112), above the bottom cover (152), a bottom safety separator (142) is placed. The bottom safety separator (142) acts as a physical barrier between the power cell stack (112) and the bottom cover (152), further enhancing safety and preventing potential short circuits or damage.

[0078] To protect against external impact loads, the portable storage device (100) incorporates a plurality of dampers (154). The dampers (154) arc adhered to the outer portion of the end covers ( 120) and the top portion of the power cell stack (112). The dampers (154) are configured to absorb and mitigate the effects of external impacts, reducing the risk of damage to the device (100).

[0079] Structural integrity is ensured through the use of a plurality of secondary fasteners (150). The fasteners () 150 are designed to securely fasten the top cover (136), the casing (156), and the bottom cover (152) together, providing robust structural integrity for the energy storage device (100).

[0080] The portable energy storage device (100) also include various sensors, such as thermal sensors, pressure sensors, proximity sensors, or other similar types. These sensors enable the monitoring of critical parameters, allowing for efficient control, optimization, and safety management of the energy storage device (100).

[0081] The embodiments in the present disclosure described herein above have several technical advantages including, but not limited to, the realization of a portable energy storage device that:- provides a higher energy density, allowing for increased energy storage capacity within the same form factor as the previous generation;- is weight efficient and compact;- provides significantly higher range compared to its predecessor;- incorporates advanced safety mechanisms;- meets stringent regulatory standards and requirements, ensuring full compliance with safety, performance, and environmental regulations; and- provides robust and all-weather performance.

[0082] 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.

[0083] 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, ft 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 bepracticed with modification within the scope of the embodiments as described herein.

Claims

STATEMENT OF CLAIMSWe claim:

1. A portable energy storage device (100) for an electric vehicle comprising: a plurality of power cells (102) electrically connected in series; a plurality of cell holders (104), each cell holder (104) defining an opening (110) for securely holding the power cell (102) in position, a plurality of extensions (106) having an aperture (108) projecting outward at corresponding operational comers, wherein the cell holders (104) are stacked parallel to each other to form a power cell stack (112) and secured using primary fasteners (126) passing through the apertures (108); a thermal conductive plate (1 14) interposed between the contiguous power cells (102) on the obverse side, said thermal conductive plate (114) designed to facilitate distribution and dissipation of thermal energy generated during operation; a thermal barrier (116) interposed between the contiguous power cells (102) on a reverse side and along an operational top portion of the power cell stack (112), wherein said thermal barrier (116) is configured to provide insulation against fluctuations in temperature; a plurality of end covers (120) provided with a plurality of extensions (122) having corresponding apertures (124) complimentary to the plurality of extensions (106) having aperture (108) of the cell holder (104), the end covers (120) placed on an operational front side and a back side of the power cell stack (112), thereby ensuring mechanical protection and structural integrity; an electronic control unit (130) placed on the operational top of the power cell stack (112) and electrically connected to the plurality of power cells (102), the electronic control unit (130) configured to manage and monitor the plurality of power cells (102); a top cover (136) adapted to be positioned on the operational top position of the power cell stack (112) and adapted to enclose the electronic control unit (130); a bottom cover (152) located at an operational bottom of the power cell stack (112);a bottom plate (144) having a charging / discharging unit (146) electrically connected to the power cells (112) through the electronic control unit (130) for charging and discharging power from the power cell (102); and a plurality of casings (156) covering the operational side portions of the power cell stack (112) and configured to provide additional protection and structural support for the energy storage device (100).

2. The portable energy storage device (100) as claimed in claim 1, wherein the portable energy storage device (100) comprises of a top plate (134) placed on top of the electronic control unit (130) and configured to provide mechanical protection to the electronic control unit (130).

3. The portable energy storage device (100) as claimed in claim 1 , wherein the portable energy storage device (100) consists of a thermal runaway barrier (118) placed on operational top of the thermal barrier (1 16) and configured to provide insulation against rapid and uncontrollable rise in temperature.

4. The portable energy storage device (100) as claimed in claim 1, wherein the thermal barrier (116) is further interposed between the operational sides of the power cell stack (112) and an inner face of the casing (156).

5. The portable energy storage device (100) as claimed in claim 1, wherein the portable energy storage device (100) consists of a top safety separator (128) and an electrical safety separator (132), separated by a thermal barrier (116) interposed therebetween and positioned at the operational top portion of the power cell stack (112) below the electronic control unit (130).

6. The portable energy storage device (100) as claimed in claim 1, wherein the top cover (136) includes a handle (138) for convenience of transportation and an electronic display unit (140) for displaying parameters of the energy storage device (100).

7. The portable energy storage device (100) as claimed in claim 1 , wherein the bottom cover (152) consists of a clamping unit (148) configured for secure placement of the energy storage device (100) within a holder.

8. The portable energy storage device (100) as claimed in claim 1, wherein the portable storage device includes a bottom plate (144) removably affixed to thebottom cover (152) and configured to provide additional protection to the bottom portion of the pack and enhances aesthetics and safety.

9. The portable energy storage device (100) as claimed in claim 1, wherein the portable energy storage device (100) consists of a bottom safety separator (142) placed at operational bottom of the power cell stack (112) above the bottom cover (152), the bottom safety separator configured to provide physical barrier between the power cell stack (112) and bottom cover (152).

10. The portable energy storage device (100) as claimed in claim 1, wherein the portable storage device includes a plurality of dampers (154) adhered to outer portion of the end covers (120) and top portion of the power cell stack (112), the dampers (154) configured to provide protection against external impact loads.

11. The portable energy storage device (100) as claimed in claim 1, wherein the portable energy storage device consists of a plurality of secondary fasteners (150) configured to fasten the top cover (136), the casing (156) and the bottom cover (152) to provide structural integrity to the energy storage device (100).

12. The portable energy storage device (100) as claimed in claim 1, wherein the portable energy storage device (100) includes a plurality of sensors, wherein the sensors are selected from a group comprising of thermal sensor, pressure sensor, proximity sensor and the like.

13. The portable energy storage device (100) as claimed in claim 1, wherein the end cover (120) is selected from a group of materials consisting of ceramics, metal and materials having flame-retardant properties for enhanced safety.

14. The portable energy storage device (100) as claimed in claim 1, wherein a thickness of the thermal conductive plate (114) is in a range of 0.15 mm to 0.25mm.

15. The portable energy storage device (100) as claimed in claim 1 , wherein material for the thermal conductive plate (114) is selected from a group consisting of copper, aluminium, stainless steel, and material with high thermal conductivity.

16. The portable energy storage device (100) as claimed in claim 1, wherein thickness of the thermal barrier (116) plate is in a range of 1.3 mm to 1.5 mm.

17. The portable energy storage device (100) as claimed in claim 1, wherein material for the thermal barrier (116) plate is selected from a group consisting ofglass wool, mineral wool, polyurethane foam, mica, ceramic silicone rubber and fiberglass cloth.

18. The portable energy storage device (100) as claimed in claim 1, wherein material for the casing (156) is selected from a group consisting of metals, ceramic and alloys.

Images