Description:Technical Field of Invention
[0001] The present subject matter relates to an energy storage device, more specifically the thermal management system in the energy storage device.
Background 5
[0002] A vehicle with two or four wheels may be propelled by any of a number of propulsion means. The most common types of such propulsion means are an internal combustion engine, which generates power for propulsion by combusting a hydrocarbon-based fuel in a cylinder, which generates exhaust gases, which push down on a piston translating the combustion into forward motion. Such 10 vehicles usually have a fuel storage unit mounted securely on the vehicle itself. Another method is to have a rechargeable electric power storage unit onboard the vehicle, which powers one or more electric motors, which drive the wheel. The electric motors may be mounted on the wheel hub itself, or on an axle, or on the frame of the vehicle, and be connected to the wheel through a shaft, a chain or a 15 belt. An entirely electric vehicle will have one or more electrical energy storage devices, to power the one or more electric motors. Such energy storage devices must have a high charge density and a high charge capacity, in order to ensure maximum utilisation of the vehicle, and maximum available range for the user of the vehicle. Such energy storage devices are usually made with Lithium ion (Li-20 ion) cells, which have a very high charge density compared to other types of known cells (such as Lead Acid).
[0003] Historically, the application of electric powertrains in vehicles has been limited by the capacity of the existing energy storage devices to power the electric motor for extended periods of time. Li-ion cells are currently the most commonly 25 used energy storage device cells in the automotive and other industries due to their high charge capacity and density. Compared to other existing energy storage device cells, the Li-ion cell provides a higher range of operation for the vehicle due to its high charge capacity. Also, with the development of faster charging ports, the viability of electric vehicles are increasing. 30
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[0004] However, such energy storage devices comprising Li-ion cells generate a lot of heat when charging or discharging. Appropriate heat dissipation methods also have to be arranged around the energy storage device for the same. This heating can damage the cells, and generally affects the life and longevity of the cells in the energy storage device. In existing energy storage device packs, it is 5 usually very difficult to replace a single cell as the packaging of the cells is done by taking into consideration various factors, including but not limited to electrical connections, heat dissipation mechanisms, and external cooling mechanisms. Heating in a Li-ion cell can lead to a failure mode of the Li-ion energy storage device known as thermal runaway. Li-ion thermal runaway occurs when heat 10 generated by a cell exceeds the amount of heat being dissipated, which causes a chain reaction in the form of propagating thermal runaway in surrounding Li-ion cells and energy storage devices. In order to prevent any mishaps, energy storage device management systems are designed to resist charging when the temperature of the energy storage device is higher than a threshold limit. Also during operation 15 of a vehicle when a energy storage device is discharging, the energy storage device tends to heat up, and the energy storage device management systems are generally configured to restrict the power output of the energy storage device at that moment, to prevent further temperature rise.
[0005] Heating in the cells also affects the performance of the cells of the energy 20 storage device. In electric vehicles, the range of the vehicle generally depends upon the charge carrying capacity of the plurality of cells that are part of the energy storage device. The charge carrying capacity is affected by the repeated heating and cooling. Also as mentioned above, the charging time is lengthened because of the temperature of the energy storage device. This is further affected 25 by the ambient air temperature, as traditional cooling systems used in motor vehicles, such as a radiator and fan, cannot cool the energy storage device below the ambient temperature. Another aspect of the existing energy storage devices is that the heat withdrawal system within the energy storage device is primarily configured to draw heat from the terminals of the individual cells. However, the 30 heat from the cell body is not drawn out. The cells are usually placed in a cell
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holder, and further packaged with one or more phase changing materials (PCMs), which act as heat exchangers between the cell body and the cooling system. However, this system is not effective, especially for high usage and fast charging requirements in vehicles. The time taken to withdraw the heat is too long. The charging time of electric vehicles is affected primarily by the capacity of the 5 charger, and also the cooling system for the cells. In the present systems, it usually takes a long time to cool the cells first, and then the charging starts, because the protective measures in the energy storage devices prevent charging otherwise. Active cooling systems for energy storage devices are required for electric vehicles where a fast-charging system is installed, as faster cooling of the 10 cells will reduce the effective charging time of the energy storage vehicle. In places where the ambient temperature of the environment is usually high, cooling the cells below the threshold temperature becomes difficult, increasing the risk of a thermal runaway, and therefore affecting charging time.
[0006] Since the existing cooling systems are configured to withdraw heat from 15 the terminals of the cells, a heat gradient develops between the cell body and the terminals. Depending on the type and construction of the cells, the heat gradient can range anywhere between 0.5 degree Celcius to 15 degree Celcius. Even with active cooling systems, the heat dissipation from the body of the cells takes a long time. Further, the use of active cooling systems in vehicles is generally not 20 considered because such a cooling system generally consumes some power in order to function, which may reduce the range of the vehicle. This compromises the charging duration of the vehicle, therefore restricting the use of the vehicle beyond its range that the user may have started with. In view of the above, there is a need for a cooling system of an energy storage device for an electric vehicle 25 which allows fast charging with an active cooling system, without consuming too much power from the energy storage device and affecting the range of the vehicle.
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Summary of the Invention
[0007] This summary is illustrative only and is not intended to be in any way limiting. In addition to the illustrative aspects, embodiments, and features described below, further aspects, embodiments, and features will become apparent by reference to the drawings and the following detailed description. 5
[0008] In an aspect, an energy storage device is disclosed. The energy storage device comprises: a plurality of cells, the plurality of cells being arranged in one or more rows and one or more columns, each of the plurality of cells having two electrical terminals; one or more cooling plates, at least a first cooling plate of the one or more cooling plates being placed on a first row of electrical terminals of 10 the plurality of cells, and at least a second of the one or more cooling plates being placed on a second row of electrical terminals of the plurality of cells; and, one or more arms extending from the at least first cooling plate and the at least second cooling plate along a length of each of the plurality of cells.
[0010] In an embodiment, the one or more arms extend to a length less than half 15 the length of each of the cells.
[0011] In an embodiment, a thermally conductive dielectric coating is provided between each of the electrical terminals of the plurality of cells and the one or more cooling plates.
[0012] In an embodiment, one or more coolant veins are configured in the one or 20 more cooling plates for efficient heat transfer from the plurality of cells.
[0013] In an embodiment, a thermally conductive dielectric gap filler material is used to package the plurality of cells.
[0014] In an embodiment, one or more metallic interconnectors are configured to electrically connect the electrical terminals of the plurality of cells. 25
[0015] In an embodiment, the plurality of cells are placed in a cell holder, the cell holder is configured in two halves, each of the halves of the cell holder being configured to enable the one or more arms to be proximal to the each of the plurality of cells.
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[0016] In an embodiment, each of the halves of the cell holder being made of a thermally conductive dielectric material, wherein the thermally conductive dielectric material constituting at least a portion of epoxy.
[0017] In an embodiment, a liquid coolant is passed through the cooling veins, the liquid coolant entering the veins through an inlet port, and exiting the veins 5 through an outlet port.
[0018] In an embodiment, a heat dissipation mechanism and a coolant pump being attached between the inlet port and the outlet port, the coolant pump enabling a continuous flow of the liquid coolant through the one or more coolant veins, and wherein, the heat dissipation mechanism being one of a radiator with a 10 fan, a refrigerator, and a Peltier base.
[0019] In an embodiment, the one or more arms extending from the at least first cooling plate and the at least second cooling plate along a length of each of the plurality of cells form a single arm, one or more coolant veins are configured in the one or more cooling plates, and in the one or more arms for efficient heat 15 transfer from the plurality of cells.
[0020] In an embodiment, a thermally conductive dielectric coating is provided between each of the electrical terminals of the plurality of cells and the one or more cooling plates.
[0021] In an embodiment, a thermally conductive dielectric gap filler material is 20 used to package the plurality of cells.
[0022] In an embodiment, one or more metallic interconnectors are configured to electrically connect the electrical terminals of the plurality of cells.
[0023] In an embodiment, the plurality of cells being placed in a cell holder, the one or more arms being integrally formed within the cell holder. 25
[0024] In an embodiment, the cell holder being configured in two halves.
[0025] In an embodiment, a liquid coolant is passed through the cooling veins, the liquid coolant entering the veins through an inlet port, and exiting the veins through an outlet port.
[0026] In an embodiment, a heat dissipation mechanism and a coolant pump 30 being attached between the inlet port and the outlet port, the coolant pump
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enabling a continuous flow of the liquid coolant through the one or more coolant veins, and wherein, the heat dissipation mechanism being one of a radiator with a fan, a refrigerator, and a Peltier base.
[0027] In an embodiment, the energy storage device is placed in an external casing, the external casing comprising a top cover, two side covers, and a bottom 5 cover, wherein one or more coolant flowing veins are configured through the external casing.
Brief Description of Drawings
[0028] Reference will be made to embodiments of the invention, examples of 10 which may be illustrated in accompanying figures. These figures are intended to be illustrative, not limiting. Although the invention is generally described in context of these embodiments, it should be understood that it is not intended to limit the scope of the invention to these particular embodiments.
[0029] Figure 1 exemplarily illustrates an energy storage device with inlet and 15 outlet ports for coolant as per a first embodiment of the present invention.
[0030] Figure 2 exemplarily illustrates an energy storage device with inlet and outlet ports for coolant as per a second embodiment of the present invention.
[0031] Figure 3 exemplarily illustrates the energy storage device when a top cover of the energy storage device has been removed. 20
[0032] Figure 4 exemplarily illustrates a cross section of the energy storage device along the line A-A as shown in Figure 3 according to the first embodiment of the energy storage device.
[0033] Figure 5 exemplarily illustrates a cross section of the energy storage device along the line A-A as shown in Figure 3 according to the second 25 embodiment of the energy storage device.
[0034] Figure 6 exemplarily illustrates a zoomed in view of the cross section of the energy storage device as shown in figure 4 according to the first embodiment of the energy storage device.
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[0035] Figure 7 exemplarily illustrates a zoomed in view of the cross section of the energy storage device as shown in figure 4 according to a variation of the first embodiment of the energy storage device.
[0036] Figure 8 exemplarily illustrates a zoomed in view of the cross section of the energy storage device as shown in figure 5 according to the second 5 embodiment of the energy storage device.
[0037] Figure 9 exemplarily illustrates a cross sectional view of the energy storage cells in the energy storage device as shown in figure 5 according to the second embodiment of the energy storage device.
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Detailed Description
[0038] Various features and embodiments of the present invention here will be discernible from the following description thereof, set out hereunder.
[0039] Figure 1 exemplarily illustrates an energy storage device 100 with inlet ports 104a, 104b and outlet ports 105a, 105b for a coolant as per an embodiment 15 of the present invention. Reference axes X, Y, Z are also shown in the present figure. An outer casing of the energy storage device 100 is primarily visible in the present figure. The outer casing of the energy storage device consists of a top cover 101, a side cover 102, and a bottom cover 103. The side cover 102 may be composed of two or more parts, and may comprise a first side cover and a second 20 side cover. A plurality of energy storage cells are arranged within the outer casing in rows and columns, which are further electrically connected using one or more metallic interconnectors, in a plurality of series and parallel connections. The energy storage cells according to the present embodiment may be lithium-ion cells, which have a tendency to generate heat when charging or discharging. If the 25 heat generated by the plurality of cells are not dissipated efficiently and quickly, the lithium-ion cells have a tendency to go into thermal runaway, wherein a malfunction is caused in cells due to excess heat. For increasing the efficiency of electric vehicles, it is necessary that the turnaround time of vehicles when being charged is minimized to the maximum extent possible. Generally, most of the 30
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charging time of the vehicle is spent on waiting on the energy storage device to cool down so that it is safe to charge the cells. Usually, this means that some form of cooling mechanism is required for faster cooling of the energy storage cells. Further, it can be seen in the figure 1 that the various cover members of the outer casing of the energy storage device have fin like structures for additional radiating 5 effect, helping in the cooling of the cells. The inlet ports 104a, 104b and the outlet ports 105a, 105b are configured to be connected to one or more cooling mechanisms. The inlet ports 104a, 104b and the outlet ports 105a, 105b are emanating from the energy storage device 100 along the X axis, on one or more side panels (along the Y-Z plane). As per an embodiment of the present invention, 10 the cooling mechanism is an active cooling mechanism comprising a flow pump for the coolant, and a cooling means. The coolant flows out of the outlet ports 105a, 105b into one or more coolant veins that carry the liquid coolant into the flow pump and the cooling means, and back into the inlet ports 104a, 104b. The flow pump maintains a flow pressure in the liquid coolant throughout the coolant 15 veins. The cooling means on the other hand is configured to cool down the liquid coolant which is coming out of the outlet ports 105a, 105b. The cooling means may comprise a radiation means or a refrigeration means. A radiator can only lower the temperature of the coolant to the ambient temperature of the atmosphere. In situations where the ambient temperature of the atmosphere is 20 itself high, the cooling may not be effective enough with a radiator-based system. In such cases, the charging time of the energy storage device therefore is not reduced significantly as fast cooling is necessary for fast charging of the energy storage cells in the energy storage device. The energy storage device management system is configured to monitor the temperature of each of the energy storage 25 cells within, and control the flow of current through the cells which are running at a significantly hotter temperature in order to prevent thermal runaway. The cells generate heat when charging or discharging, and either operation while the cells are already hot can cause failure in the individual cells. The energy storage device management system is usually stored within the region of the energy storage 30 device 100 covered by the top cover 101. Therefore, according to a preferred
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embodiment of the present invention, the cooling means may comprise one or more refrigeration systems, wherein the temperature of the coolant flowing through the channel is reduced below the ambient temperature of the atmosphere. As per an embodiment of the present invention, the cooling means may be one of a Peltier cooling system and a refrigeration system. As per this embodiment, 5 coolant veins emanate from each of the inlet ports 104a, 104b and each of the outlet ports 105a, 105b into the energy storage device 100.
[0040] Figure 2 exemplarily illustrates an energy storage device with inlet ports and outlet ports for coolant as per another embodiment of the present invention. Reference axes X, Y, Z are also shown in the present figure. The present 10 embodiment as shown in the figure 2 involves a similar structure of the energy storage device 100. As per this embodiment of the present invention, the energy storage device comprises an inlet ports 104c and an outlet ports 105c for the coolant. In this embodiment, the energy storage device 100 shall have one inlet port 104c and one outlet port 105c each. The structure of the energy storage 15 device 100 is the same as the previous embodiment. However, the inlet port 104c and the outlet port 105c are arranged along the Z axis, whereas in the previous embodiment, the inlet ports 104a, 104b, and the outlet ports 105a, 105b were aligned along the X axis, emerging from the side panels on one or more sides.
[0041] Figure 3 exemplarily illustrates the energy storage device 100 when the 20 top cover 101 of the energy storage device 100 has been removed. The top cover 101 accommodates the energy storage device management system of the energy storage device 100. Generally, one or more electronic and electrical control systems are disposed in the space created by the top cover 101. These electronic and electrical control systems are configured to regulate the charging and 25 discharging of the individual energy storage cells, so that the heating of the energy storage cells can be avoided by regulating the rate of charging and discharging. Further, these electronic and electrical control systems are also responsible for cell balancing, and maintaining the overall health of the energy storage device 100. Additionally, the top cover 101 supports the mounting of the various electrical 30 and electronic connectors which connect the energy storage device 100 with the
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various electrical loads of the vehicle, and the various other electronic controllers in the vehicle. In the figure 3, it is shown that an inlet port, and an outlet port are configured on the one or more parts of the side cover 102. A reference axis A-A is shown passing through the inlet port and the outlet port. In some subsequent figures, the cross section of the energy storage device with respect to the axis A-A 5 as shown here.
[0042] Figure 4 is an exemplary illustration of the cross section of the energy storage device along the axis A-A as shown in Figure 3 according to the first embodiment of the energy storage device. the Figure 4 primarily shows the one or more energy storage cells 106 of the energy storage device 100, and the 10 configuration of the cooling veins around the energy storge cells 106. The energy storage cells are typically lithium ion cells, which have a higher charge storing capacity than other materials. Each cell of the one or more energy storge cells 106 has two electrical terminals, a positive terminal and a negative terminal. The terminals of each cell is generally made with nickel. One or more electrical 15 interconnectors 108 are used to connect the one or more energy storage cells in series and parallel connections, to get the desired current and voltage output ratings of the energy storage device 100 as a whole. The terminals of each of the cells of the one or more energy storage cells 106 are usually welded to the one or more interconnectors 108. The figure 4 represents the energy storage device 100 20 as per another embodiment of the present invention. A high amount of current flows through the terminals and the interconnectors at any moment of time, due to either charging, or discharging of the cells. This generates heat within the energy storage device, which is required to be dissipated as efficiently as possible. This heat generated by the charging and discharging of the lithium ion cells can cause a 25 failure in the energy storage device known as thermal runaway. Many cooling methods have been adopted in the known art in order to dissipate the heat in the most efficient way possible. Most energy storage devices 100 rely on transferring the heat out of the battery pack through phase changing materials, or other electrically insulating materials which are good conductors of heat. A 30 fundamentally recognised more efficient way of cooling the one or more cells 106
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would be to utilize liquid cooling, since a liquid can draw heat from all available surfaces of each of the cells. It is however a question of design as to which parts of the energy storage device may be cooled using a static or a flowing liquid. One method is immersion cooling, which uses a dielectric liquid to immerse the entire assembly, and cool the liquid using external means, which may include radiators. 5 However, immersion cooling requires additional system complexities. Especially when being used in a two wheeled vehicle, there are additional risks such as vibrations from the road and the vehicle resulting in leaks, packaging issues, and possible damage due to heat or fire. Generally, with an active cooling system, the size of the energy storage device will be large and unsuitable for a two wheeled 10 vehicle. As per the present embodiment, a dielectric coating 110 is used between the electrical interconnectors 108 and cooling vein 104, which is connected to the inlet ports 104d, 104e and the outlet ports 105d, 105e. For brevity, the cooling veins are being referred to with the reference numeral 104, while the inlet ports are being referred with the numerals 104a, 104b, 104c, 104d, 104e. the cooling 15 veins 104 are attached to a one or more extending arms 107, that extend to a predetermined length of each of the energy storage cells 106. This is configured on both sides of the energy storage cells 106. Therefore, arms 107 extend along the energy storage cells 106 to a predetermined length on both sides of the terminals of the energy storage cell 106. As per the present embodiment, the 20 coolant only flows through the cooling veins 104. As per another embodiment, the coolant flow into the extending arms 107. This is highlighted by the detail B, which is further shown in figure 7.
[0043] Figure 5 exemplarily illustrates a cross section of the energy storage device along the line A-A as shown in Figure 3 according to the second 25 embodiment of the energy storage device. figure 5 provides another embodiment of the energy storage device 100 from the one shown in figure 4. In the present embodiment, the extending arms 107 on both sides of the terminals of the energy storage cell 106 are configured to be connected to each other. In an embodiment, the connected arms allow for better flow of heat from the body of the energy 30 storage cells 106 to the coolant veins 104, depending on the thermal gradient of
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the cooling veins 104 on either side. In another embodiment, the connected extending arms 107 are configured to form a channel for the coolant between the two sides of the cooling veins 104. This is highlighted by the detail C, which is further shown in figure 8.
[0044] Figure 6 exemplarily illustrates a zoomed in view of the cross section of 5 the energy storage device as shown in figure 4 according to the first embodiment of the energy storage device 100. According to this embodiment, the cooling plate has extending arms 107. The cooling plate supports cooling veins 104 that carry the coolant through them, and into the active cooling mechanism fitted with the energy storage device 100. The interconnectors 108 are so placed as to enable 10 them to electrically connect the various terminals of the energy storage cells 106 on each side. A dielectric layer 110 is placed between the interconnectors 108 and the cooling plates with extending arms 107. The arms 107 only extend upto a predetermined length of the energy storage cell 106. A further potting material 109 is provided between the energy storage cells 106 and the interconnectors 108, 15 which holds the cells 106 and the extending arms 107 in place. Additionally, the potting material 109, which may be of silicone, acrylic, epoxy, polyurethane or any other suitable material, conducts heat from the body of the energy storage cells 106 to the extending arms 107, as per this embodiment of the present invention. 20
[0045] Figure 7 exemplarily illustrates a zoomed in view of the cross section of the energy storage device 100 as shown in figure 4 according to a variation of the first embodiment of the energy storage device 100. As mentioned above, according to this embodiment, the extending arm 107 is configured to have a channel for the coolant, to improve the heat dissipation. Figure 8 exemplarily 25 illustrates a zoomed in view of the cross section of the energy storage device 100 as shown in figure 5 according to the second embodiment of the energy storage device. as per this embodiment, the extending arms 107 from either side of the energy storage cells 106 are connected to each other, and configured so that a coolant channel is created therein the connected extending arms 107. 30
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[0046] Figure 9 exemplarily illustrates a cross sectional view of the energy storage cells 106 in the energy storage device 100 as shown in figure 5 according to the second embodiment of the energy storage device. As mentioned above, according to this embodiment, the extending arm 107 is configured to have a channel for the coolant, to improve the heat dissipation. 5
[0047] The cooling system in the present invention is easily configurable with an active cooling system, such that the system will consume less than 5 percent of the charge of the energy storage cells 106 for running the cooling system. This is enabled by the one or more arms 107 from the first cooling plate and the second cooling plate, which withdraws more heat from the body of each of the individual 10 energy storage cells 106 than it is possible with just a conventional cooling plate. The energy storage device 100 is suitable for use in a two wheeled vehicle, or any kind of vehicle, without any risk of leakage or spillage of liquid coolant during normal operations due to the packaging of the coolant channels within the energy storage device 100 as given in any of the embodiments of the present invention 15 described in this application. Further, the extending arms 107 enable improved heat dissipation from the energy storage cells, in any of the embodiments described in this application.
[0048] In light of the above-mentioned advantages and the technical advancements provided by the disclosed method and system, the claimed steps as 20 discussed above are not routine, conventional, or well understood in the art, as the claimed steps enable the above-mentioned solutions to the existing problems in conventional technologies. Further, the claimed steps clearly bring an improvement in the functioning of the system itself as the claimed steps provide a technical solution to a technical problem. 25 , Claims:We claim:
1. An energy storage device (100), the energy storage device (100) comprising:
a plurality of cells (106), the plurality of cells (106) being arranged in one or more rows and one or more columns, each of the plurality of cells (106) having two electrical terminals; 5
one or more cooling plates, at least a first cooling plate of the one or more cooling plates being placed on a first row of electrical terminals of the plurality of cells, and at least a second cooling plate of the one or more cooling plates being placed on a second row of electrical terminals of the plurality of cells (106); 10
one or more arms (107) extending from the at least first cooling plate and the at least second cooling plate along a length of each of the plurality of cells (106).
2. The energy storage device (100) as claimed in claim 1, wherein the one or more arms (107) extend to a length less than half the length of each of the 15 plurality of cells (106).
3. The energy storage device (100) as claimed in claim 1, wherein a thermally conductive dielectric coating (110) is provided between each of the electrical terminals of the plurality of cells (106) and the one or more cooling plates.
4. The energy storage device (100) as claimed in claim 1, wherein one or more 20 coolant veins are configured in the one or more cooling plates for efficient heat transfer from the plurality of cells (106).
5. The energy storage device (100) as claimed in claim 1, wherein a thermally conductive dielectric gap filler material is used to package the plurality of cells (106). 25
6. The energy storage device (100) as claimed in claim 1, wherein one or more metallic interconnectors (108) are configured to electrically connect the electrical terminals of the plurality of cells (106).
7. The energy storage device (100) as claimed in claim 1, wherein the plurality of cells (106) being placed in a cell holder, the cell holder being configured in 30
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two halves, each of the halves of the cell holder being configured to enable the one or more arms to be proximal to the each of the plurality of cells (106).
8. The energy storage device (100) as claimed in claim 7, wherein each of the halves of the cell holder being made of a thermally conductive dielectric material, wherein the thermally conductive dielectric material constituting at 5 least a portion of epoxy.
9. The energy storage device (100) as claimed in claim 4, wherein a liquid coolant is passed through the cooling veins (104), the liquid coolant entering the veins through an inlet port (104a, 104b, 104c, 104d, 104e), and exiting the veins through an outlet port (105a, 105b, 105c, 105d, 105e). 10
10. The energy storage device (100) as claimed in claim 9, wherein a heat dissipation mechanism and a coolant pump being attached between the inlet port (104a, 104b, 104c, 104d, 104e) and the outlet port (105a, 105b, 105c, 105d, 105e), the coolant pump enabling a continuous flow of the liquid coolant through the one or more coolant veins (104), and wherein, the heat 15 dissipation mechanism being one of a radiator with a fan, a refrigerator, and a Peltier base.
11. The energy storage device (100) as claimed in claim 1, wherein the one or more arms (107) extending from the at least first cooling plate and the at least second cooling plate along a length of each of the plurality of cells (106) form 20 a single arm, one or more coolant veins (104) are configured in the one or more cooling plates, and in the one or more arms (107) for efficient heat transfer from the plurality of cells (106).
12. The energy storage device (100) as claimed in claim 11, wherein a thermally conductive dielectric coating (110) is provided between each of the electrical 25 terminals of the plurality of cells (106) and the one or more cooling plates.
13. The energy storage device (100) as claimed in claim 11, wherein a thermally conductive dielectric gap filler material is used to package the plurality of cells (106).
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14.The energy storage device (100) as claimed in claim 11, wherein one or moremetallic interconnectors are configured to electrically connect the electricalterminals of the plurality of cells (106).
15.The energy storage device (100) as claimed in claim 11, wherein the pluralityof cells (106) being placed in a cell holder, the one or more arms (107) being5 integrally formed within the cell holder.
16.The energy storage device (100) as claimed in claim 15, wherein the cellholder being configured in two halves.
17.The energy storage device (100) as claimed in claim 15, wherein a liquidcoolant is passed through the cooling veins (104), the liquid coolant entering10 the veins (104) through an inlet port (104a, 104b, 104c, 104d, 104e), andexiting the veins through an outlet port (105a, 105b, 105c, 105d, 105e).
18.The energy storage device (100) as claimed in claim 17, wherein a heatdissipation mechanism and a coolant pump being attached between the inletport (104a, 104b, 104c, 104d, 104e) and the outlet port (105a, 105b, 105c,15 105d, 105e), the coolant pump enabling a continuous flow of the liquidcoolant through the one or more coolant veins (104), and wherein, the heatdissipation mechanism being one of a radiator with a fan, a refrigerator, and aPeltier base.20
Dated this 11th day of August, 2023