Description:A BATTERY PACK
TECHNICAL FIELD
[0001] The present subject matter generally relates to a battery pack. More particularly, but not exclusively to a cold plate assembly disposed in a battery 5 pack for vehicles.
BACKGROUND
[0002] A battery pack includes a plurality of battery cells interconnected to each other. The battery pack achieves desired voltage by connecting several battery cells in series, such that each battery cell adds its voltage potential to 10 derive the total terminal voltage. Similarly, the battery pack achieves desired current by connecting several battery cells in parallel. The use of battery packs as an energy source is becoming prevalent in all parts of the world because of the advantages offered by stored electrical energy when compared to especially energy generated via fossil fuel powered internal combustion 15 engines. Thus, battery packs are being used to power a variety of electrical and electronic devices including for power intensive applications like powering automobiles, work machines and power tools.
[0003] The battery pack is the energy source of an electric vehicle which provides the required electrical energy to propel the vehicle and power its 20 auxiliary components. During charging and discharging cycles of the battery pack, it releases a significant amount of heat which causes the battery cells of the battery pack to heat up. Higher temperatures are detrimental to the health of the battery cells as battery cell heating leads to faster capacity degradation and is likely to cause thermal runaway. Capacity degradation of the battery 25 cells reduces performance and longevity of the battery pack. Thermal runaway of the battery cells further poses a huge safety risk as it could lead to fire and explosion of the battery pack. Ideally the battery cells need to be maintained between 25 degrees Celsius and 45 degrees Celsius for optimum performance, longevity, and safety, regardless of ambient thermal conditions. 30 To ensure safe operation of battery cells and optimum battery life, it is
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important to maintain uniform temperature across battery cells and optimum thermal condition in the battery pack overall.
[0004] Furthermore, the number of charge-discharge cycles of a battery pack is dependent on the ambient temperature conditions a battery cell is kept in over its lifetime. With an increase in the temperature of the battery cell, the 5 overall resistance of the circuit increases, thereby leading to loss of energy as heat which increases the ambient temperature, creating an endless loop. This may lead to the condition of thermal runaway i.e., the rapid process of the battery cell generating more heat than it can dissipate. Thermal runaway is an undesirable, unsafe event that may trigger in the neighbouring battery cells 10 inside a battery pack leading to an explosive event called thermal runaway propagation. Moreover, the probability of irreversible by-reactions occurring inside the battery cell also increases, thereby leading to a loss of energy capacity and an increase in resistance. Moreover, high battery cell temperature also poses a challenge in implementing fast charging as high 15 charge rates generate high amounts of heat.
[0005] Generally, larger capacity battery packs generate more heat and employs cooling means to maintain its temperature below the upper threshold limit. Conventional cooling systems employ regular conduction-convection cooling to dissipate heat generated inside the battery pack to a surrounding 20 environment. The current heat dissipation solution is a Phase Change Material (PCM) which changes is state from solid to liquid at a certain phase transition temperature. Phase Change Material (PCM) is employed to absorb heat generated and dissipate this heat gradually to the surrounding environment. During phase transition of the PCM, it is able to absorb excess heat in the 25 form of latent heat of fusion, thus acting as a heat sink and preventing the temperature of the battery cells from increasing steeply. However, the phase transition happens within a very narrow temperature range, i.e., 48°C-52°C. Outside of this range, the PCM is not desirable as a heat sink, since the PCM only plays its role during its phase transition. Therefore, there is no cooling 30 mechanism employed for temperature ranges below 48°C and above 52°C. Since the phase change is only a function of temperature, the cooling effect
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is not tuneable and thus the conventional cooling systems cannot be used as a preventive measure against temperature rise, for example, in response to increased ambient temperature or initiation of fast charging. This is to say that the phase change will occur only when the cells have reached a certain temperature and thus the property cannot be utilised to prevent the cells from 5 achieving that temperature.
[0006] Conventional cooling means are not very effective in cooling the battery pack since cooling efficiency decreases with increase in temperature of the battery pack. In case of PCM, once all of the PCM is melted due to absorption of heat, phase change stops and heat absorption drastically drops. 10 These effects lead to very high battery temperature due to reduced cooling efficiency as the temperature of the battery pack progressively increases.
[0007] Additionally, an additional and a more effective cooling mechanism must be employed while also ensuring that the weight of the battery pack does not increase drastically. Thus, there is a need in the art for a battery pack 15 having a compact and efficient cooling system, which addresses at least the aforementioned problems and limitations.
[0008] Further limitations and disadvantages of conventional and traditional approaches will become apparent to one of skill in the art, through comparison of described systems with some aspects of the present disclosure, 20 as set forth in the remainder of the present application and with reference to the drawings.
SUMMARY OF THE INVENTION
[0009] According to embodiments illustrated herein, the present invention 25 provides a battery pack with a cold plate assembly.
[00010] The present invention provides a battery pack comprising a plurality of cells. At least a portion of each of the plurality of cells is covered with an encapsulant. A cold plate assembly disposed in contact with the encapsulant. The cold plate assembly comprises a first plate, and a second plate. At least 30 one of the first plate and the second plate comprises a plurality of passages
Classification: Internal
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which are configured to enable flow of a coolant therein using a pump to regulate temperature of the battery pack.
[00011] It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the invention, as claimed. 5
BRIEF DESCRIPTION OF THE DRAWINGS [00012] The details are described with reference to an embodiment of a battery pack along with the accompanying diagrams. The same numbers are used throughout the drawings to reference similar features and components. 10 [00013] Figure 1 exemplarily illustrates an exploded top view of a battery pack in accordance with an embodiment of the present disclosure. [00014] Figure 2 exemplarily illustrates an exploded bottom view of a battery pack in accordance with an embodiment of the present disclosure.
[00015] Figure 3 exemplarily illustrates a perspective view of a cold plate 15 assembly and battery cells in a battery pack in accordance with an embodiment of the present disclosure.
[00016] Figure 4 exemplarily illustrates a perspective view of an assembled battery pack in accordance with an embodiment of the present disclosure.
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DETAILED DESCRIPTION
[00017] Exemplary embodiments are described with reference to the accompanying drawings. Wherever convenient, the same reference numbers are used throughout the drawings to refer to the same or like parts. While examples and features of disclosed principles are described herein, 25 modifications, adaptations, and other implementations are possible without departing from the spirit and scope of the disclosed embodiments. It is intended that the following detailed description be considered as exemplary only, with the true scope and spirit being indicated by the following claims.
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[00018] An objective of the present subject matter is to provide a battery pack having a compact and efficient cooling system, providing a better heat dissipation solution. The present invention provides better control over the cooling and temperature range within which the battery pack is to be maintained. Such a cooling system is provided using a cold plate assembly, 5 another objective of the present subject matter is to provide a safe contact between a plurality of cells present in the battery pack and cold plate assembly, thereby reducing the risk of short circuiting. Another objective of the present subject matter is to ensure that the cold plate assembly is electrically insulated from the plurality of cells using an encapsulant. Another 10 objective of the present subject matter is to eliminate the need for a cell holder by using the encapsulant to hold the plurality of cells in place securely. Another objective of the present subject matter is to provide a battery pack with an encapsulant to ensure effective electrical insulation and thermal conduction from the plurality of cells in the battery pack to the cold plate 15 assembly. [00019] Another objective of the present subject matter is to provide a light-weight cold plate assembly by reducing the number of parts and ensuring ease of assembly of the battery pack along with the cold plate assembly.
[00020] As per an aspect of the present subject matter, the present invention 20 provides a battery pack comprising a plurality of cells. At least a portion of each of the plurality of cells is covered with an encapsulant. A cold plate assembly disposed in contact with the encapsulant. The cold plate assembly comprises a first plate, and a second plate. At least one of the first plate and the second plate comprises a plurality of passages which are configured to 25 enable flow of a coolant therein using a pump to regulate temperature of the battery pack. The encapsulant ensure that the plurality of cells are not directly in contact with the cold plate assembly to eliminate the risk of short circuiting. As per an embodiment, the encapsulant covers at least a portion of the plurality of cells to enable heat dissipation from the plurality of cells from a 30 larger surface area as well as at least one terminal of the plurality of cells. The
Classification: Internal
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pump enables effective flow of the coolant in the cold plate assembly and actively regulates the temperature of the battery pack.
[00021] As per an aspect of the present subject matter, each of the first plate and the second plate comprises the plurality of passages having conforming profiles with each other. Such conforming profiles form an enlarged plurality 5 of passages for accommodating higher volume of coolant. A higher volume of coolant flowing through the cold plate assembly further increases the effectiveness of the cold plate assembly, since a larger amount of coolant is enabled to dissipate more heat.
[00022] As per an aspect of the present subject matter, the battery pack 10 further comprises a cooling system which decreases the temperature of the coolant and further provides the cooled coolant to the pump. The cooling system performs active cooling of the coolant and circulates the coolant back to the cold plate assembly. An active cooling mechanism performed by the cooling system as per this embodiment enhances the efficacy of the cooling 15 mechanism. As per an embodiment, the cooling system may comprise one or more radiators, fans, coolers, or other cooling methods known in the art.
[00023] As per another aspect of the present subject matter, the encapsulant is thermally conductive and electrically insulating. The encapsulant further conducts heat from the plurality of cells to the cold plate assembly. In an 20 embodiment, the encapsulant is an epoxy material. The encapsulant ensures that a direct contact is not established between the plurality of cells and the cold plate assembly. The encapsulant also ensures that more heat is absorbed from a larger surface area of the plurality of cells, thereby conducting more heat from the plurality of cells to the cold plate assembly. 25
[00024] As per another aspect of the present subject matter, at least the portion of the plurality of cells being covered is within a range of 20% to 30% of a height of the plurality of cells. The height of the plurality of cells being covered by the encapsulant is measured suitably to ensure that there is no significant increase in the weight of battery pack while also covering a larger 30 surface area of the plurality of cells. The encapsulant is configured to hold
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the plurality of cells securely, thereby eliminating the need for a cell holder. The encapsulant acts as a cell holder, wherein the encapsulant covers the plurality of cells individually from all direction firmly and securely. The encapsulant also ensures that the plurality of cells are electrically insulated from their surroundings, further decreasing the risks short circuiting or other 5 hazards.
[00025] As per an aspect of the present subject matter, the plurality of cells are disposed adjacent to the first plate. The encapsulant is sandwiched between the plurality of cells and the first plate to enable dissipation of heat from the plurality of cells through the encapsulant to the first plate of the cold 10 plate assembly. The encapsulant being a good conductor of heat, efficiently absorbs heat from the plurality of cells. The encapsulant is in contact with the first plate of the cold plate assembly, and the absorbed heat is dissipated to the first plate through the encapsulant. The coolant, which is flowing between the first plate and the second plate, further dissipates the heat. The coolant is 15 then cooled and pumped back in the passages of at least the first plate and the second plate to further cool and dissipate heat.
[00026] As per an aspect of the present subject matter, the first plate and the second plate are connected together by brazing. In an embodiment, the first plate and the second plate are connected using vacuum brazing. In another 20 embodiment, the first plate and the second plate are connected using other joining methods known in the art.
[00027] As per an aspect of the present subject matter, the battery pack comprises a battery box. The battery box comprises of a plurality of side walls, a top cover, and a bottom cover. The first plate, and the second plate 25 are configured to act as the bottom cover or the top cover of the battery pack. This embodiment provides a compact and light-weight cooling mechanism, and decreases the number of parts being used to employ such a cold plate assembly. In an embodiment, the cold plate assembly is disposed on both terminals of the plurality of cells. The cold plate assembly may be assembled 30 to accommodate the cold plate assembly wherein the first plate acts as the top
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cover of the battery box. The cold plate assembly may be assembled to accommodate the cold plate assembly wherein the second plate acts as the bottom cover of the battery box.
[00028] As per an aspect of the present subject matter, the second plate comprises of one or more inlets and one or more outlets. The pump is 5 configured to pump the coolant ingress using the one or more inlets and pump the coolant egress using the one or more outlets to the cooling system. The pump allows for active cooling of the coolant and create an active flow of the coolant into the cold plate assembly.
[00029] As per an aspect of the present subject matter, the pump is 10 communicatively coupled with a battery management system (BMS) of the battery pack. The BMS is configured to regulate a flow rate of the coolant via the pump based on a charging rate of the battery pack, a discharging rate of the battery pack, and an ambient temperature surrounding the battery pack. Therefore, such an embodiment provides an efficient cooling mechanism 15 wherein if there is higher temperature, the flow rate is increased or decreased proportionately. The flow rate will be controlled by BMS by controlling the power supplied to the pump.
[00030] Therefore, such an embodiment will enable faster charging and ensuring that the temperature of the plurality of cells does not increase beyond 20 a threshold temperature. Charging rates of the battery pack can be increased by 70% to 120% if the temperatures of the plurality of cells are regulated to stay under 40℃. Similarly, a high ambient temperature is considered to be above the threshold temperature wherein the plurality of cells function efficiently. In conventional battery packs, a limit of 40℃ to 45℃ is 25 permissible while charging the battery pack. Therefore, a charging of discharging rate above 1C is considered to be a fast charging rate. Similarly, a high ambient temperature is considered to be above 40℃. The BMS is configured to regulate a flow rate of the coolant via the pump based on a detection of these parameters of the battery pack. 30
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[00031] The present invention provides a battery pack with a cold plate assembly that requires fewer additional parts and also eliminates the risk of short circuiting.
[00032] In view of the above, the claimed limitations as discussed above are not routine, conventional, or well understood in the art, as the claimed 5 limitations enable the above solutions to the existing problems in conventional technologies.
[00033] The present subject matter is described using a battery pack with a cold plate assembly which is used in a vehicle, whereas the claimed subject matter can be used in any other type of application employing above-10 mentioned battery pack, with required changes and without deviating from the scope of invention. Further, it is intended that the disclosure and examples given herein be considered as exemplary only.
[00034] The terms “an embodiment”, “embodiment”, “embodiments”, “the embodiment”, “the embodiments”, “one or more embodiments”, “some 15 embodiments”, and “one embodiment” mean “one or more (but not all) embodiments of the invention(s)” unless expressly specified otherwise. The terms “including”, “comprising”, “having” and variations thereof mean “including but not limited to”, unless expressly specified otherwise. The terms “a”, “an” and “the” mean “one or more”, unless expressly specified 20 otherwise.
[00035] The embodiments of the present invention will now be described in detail with reference to a battery pack with the accompanying drawings. However, the present invention is not limited to the present embodiments. The present subject matter is further described with reference to 25 accompanying figures. It should be noted that the description and figures merely illustrate principles of the present subject matter. Various arrangements may be devised that, although not explicitly described or shown herein, encompass the principles of the present subject matter. Moreover, all statements herein reciting principles, aspects, and examples of the present 30
Classification: Internal
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subject matter, as well as specific examples thereof, are intended to encompass equivalents thereof. [00036] Figure 1 exemplarily illustrates an exploded top view of a battery pack in accordance with an embodiment of the present disclosure. Figure 2 exemplarily illustrates an exploded bottom view of a battery pack in 5 accordance with an embodiment of the present disclosure. Figure 1 and figure 2 are explained together for brevity. A battery box (116) protects plurality of cells (108) from outside environment and prevents it from getting damaged. The encapsulant (110) covers at least a portion of the plurality of cells (108). At least the encapsulant (110) or a cell holder (106) is used to hold the 10 plurality of cells (108) still in its required position, during the operation of the vehicle (not shown) and also to maintain the required cell arrangement and cell spacing. The plurality of cells (108) provides the electric energy to drive a vehicle (not shown). A one or more interconnectors (not shown) are used to make electrical connection between the plurality of cells (108). In the present 15 embodiment, the battery box (116) includes a top cover (116a), a plurality of side walls (116b), and a bottom cover (116c). The plurality of side walls (116b) supports the one or more sides of the battery pack. The top cover (116a) covers the battery pack from a top portion. The bottom cover (116c) provides a support to the battery pack. A battery management system (BMS) 20 (104) is disposed adjacent to the top cover (116a). A cold plate assembly comprising a first plate (112a), a second plate (112b). At least one of the first plate (112a) and the second plate (112b) comprises a plurality of passages (114) which are configured to enable flow of a coolant therein using a pump (204) to regulate temperature of the battery pack (100). In an embodiment, 25 each of the first plate (112a) and the second plate (112b) comprises the plurality of passages (114) having conforming profiles with each other to form enlarged plurality of passages (114) for accommodating higher volume of coolant, such a higher volume of coolant flowing through the cold plate assembly further increases the effectiveness of the cold plate assembly, since 30 a larger amount of coolant is enabled to dissipate more heat. The encapsulant (110) ensures that the plurality of cells (108) are not directly in contact with
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the cold plate assembly to eliminate the risk of short circuiting. The encapsulant (110) covers at least a portion of the plurality of cells (108) to enable heat dissipation from the plurality of cells (108) from a larger surface area as well as at least one terminal of the plurality of cells (108). As shown in the figure, the encapsulant (110) covers a bottom portion of the plurality of 5 cells (108), a height of 20% of the plurality of cells (108). The encapsulant (110) is moulded to have notches for the plurality of cells (108) and surrounds and securely hold the plurality of cells (108) in place. The plurality of cells (108) are disposed adjacent to the first plate (112a). The encapsulant (110) is sandwiched between the plurality of cells (108) and the first plate (112a) to 10 enable dissipation of heat from the plurality of cells (108) through the encapsulant (110) to the first plate (112a) of the cold plate assembly. The encapsulant (110) is a thermally conductive and electrically insulating material, and configured to conduct heat from the plurality of cells (108) to the cold plate assembly. The top cover (116a) is connected to the plurality of 15 side walls (116b) using plurality of mounting members (102b, 102a, 102c).
[00037] Figure 3 exemplarily illustrates a perspective view of a cold plate assembly and battery cells in a battery pack in accordance with an embodiment of the present disclosure. The first plate (112a) and the second plate (112b) are connected together by brazing. In an embodiment, the first 20 plate (112a) and the second plate (112b) are connected by vacuum brazing. The second plate (112b) comprises of one or more inlets (118a) and one or more outlets (118b). The pump (204) is connected to the cooling system and the one or more inlets (118a). The pump (204) is configured to pump the coolant ingress using the one or more inlets (118a) and pump (204) the 25 coolant egress using the one or more outlets (118b) to the cooling system (202). The pump (204) enables effective flow of the coolant in the cold plate assembly and actively regulates the temperature of the battery pack (100). The pump (204) enables the coolant to flow through the cooling system (202), the cooling system (202) is configured to decrease the temperature of the 30 coolant and further provide the cooled coolant to the pump (204). The pump (204) is communicatively coupled with the battery management system
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(BMS) (104) of the battery pack (100). The BMS (104) is configured to regulate a flow rate of the coolant via the pump (204) based on a charging rate of the battery pack (100), a discharging rate of the battery pack (100), and an ambient temperature surrounding the battery pack (100). Therefore, such an embodiment provides an efficient cooling mechanism wherein if 5 there is higher temperature, the flow rate is increased or decreased proportionately. The flow rate will be controlled by BMS (104) by controlling the power supplied to the pump (204).
[00038] Figure 4 exemplarily illustrates a perspective view of an assembled battery pack in accordance with an embodiment of the present disclosure. The 10 top cover (116a) is connected to the plurality of side walls (116b) using plurality of mounting members (102b, 102a, 102c). The mounting members (102a, 102b, 102c) may be any connecting and mounting means known in the art. A first mounting member (102a) is used to connect the top cover (116a) to the plurality of side walls (116b) through the second mounting member 15 (102b) and the third mounting member (102c).
[00039] A person with ordinary skills in the art will appreciate that the systems, modules, and sub-modules have been illustrated and explained to serve as examples and should not be considered limiting in any manner. It will be further appreciated that the variants of the above disclosed system 20 elements, modules, and other features and functions, or alternatives thereof, may be combined to create other different systems or applications. [00040] The present claimed invention solves the technical problem to provide a battery pack having a compact and efficient cooling system, providing a better heat dissipation solution. The present invention provides 25 better control over the cooling and temperature range within which the battery pack is to be maintained. Such a cooling system is provided using a cold plate assembly, and provides a safe contact between a plurality of cells present in the battery pack and cold plate assembly, thereby reducing the risk of short circuiting. The present claimed invention ensures that the cold plate assembly 30 is electrically insulated from the plurality of cells using an encapsulant. The
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present claimed invention eliminates the need for a cell holder by using the encapsulant to hold the plurality of cells in place securely. The present claimed invention provides a battery pack with an encapsulant to ensure effective electrical insulation and thermal conduction from the plurality of cells in the battery pack to the cold plate assembly. 5 [00041] The present claimed invention provides a light-weight cold plate assembly by reducing the number of parts and ensuring ease of assembly of the battery pack along with the cold plate assembly.
[00042] The present invention increases the efficacy of the battery pack by regulating the temperature in its range of maximum efficiency, thereby 10 increasing the performance of a vehicle. The present invention also aims to increase the mileage of the vehicle, since a better cooled battery pack requires less maintenance and increases the life span of the battery pack, thereby providing customers ease and relief from frequent maintenance of the vehicle.
[00043] In light of the above mentioned advantages and the technical 15 advancements provided by the disclosed method and system, the claimed steps as discussed above are not routine, conventional, or well understood in the art, as the claimed steps enable the following solutions to the existing problems in conventional technologies. Further, the claimed steps clearly bring an improvement in the functioning of the configuration itself as the 20 claimed steps provide a technical solution to a technical problem.
[00044] A description of an embodiment with several components in communication with another does not imply that all such components are required, On the contrary, a variety of optional components are described to illustrate the wide variety of possible embodiments of the invention. 25
[00045] Finally, the language used in the specification has been principally selected for readability and instructional purposes, and it may not have been selected to delineate or circumscribe the inventive subject matter and is therefore intended that the scope of the invention be limited not by this detailed description, but rather by any claims that issue on an application 30 based here on. Accordingly, the embodiments of the present invention are
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intended to be illustrative, but not limiting, of the scope of the invention, which is set forth in the following claims.
[00046] While various aspects and embodiments have been disclosed herein, other aspects and embodiments will be apparent to those skilled in the art. The various aspects and embodiments disclosed herein are for purposes of 5 illustration and are not intended to be limiting, with the true scope and spirit being indicated by the following claims.
[00047] While the present disclosure has been described with reference to certain embodiments, it will be understood by those skilled in the art that various changes may be made, and equivalents may be substituted without 10 departing from the scope of the present disclosure. In addition, many modifications may be made to adapt a particular situation or material to the teachings of the present disclosure without departing from its scope. Therefore, it is intended that the present disclosure not be limited to the particular embodiment disclosed, but that the present disclosure will include 15 all embodiments falling within the scope of the appended claims.
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Reference Numerals:
100 – battery pack
102a – first mounting member
102b – second mounting member
102c – third mounting member 5
104 – battery management system (BMS)
106 – cell holder
108 – plurality of cells
110 – encapsulant
112a – first plate 10
112b – second plate
114 – plurality of passages
116 – battery box
116a – top cover
116b – plurality of side walls 15
116c – bottom cover
118a – one or more inlets
118b – one or more outlets
202 – pump
204 – cooling system 20 , Claims:CLAIMS
I/We Claim:
1. A battery pack (100) comprising:
a plurality of cells (108), wherein at least a portion of each of 5 the plurality of cells (108) being configured to be covered with an encapsulant (110);
a cold plate assembly disposed in contact with the encapsulant (110), wherein the cold plate assembly comprises:
a first plate (112a), and a second plate (112b), wherein 10 at least one of the first plate (112a) and the second plate (112b) comprises a plurality of passages (114), and wherein the plurality of passages (114) is configured for flow of a coolant therein using a pump (204) to regulate temperature of the battery pack (100). 15
2. The battery pack (100) as claimed in claim 1, wherein each of the first plate (112a) and the second plate (112b) comprises the plurality of passages (114) having conforming profiles with each other to form enlarged plurality of passages (114) for accommodating higher 20 volume of coolant.
3. The battery pack (100) as claimed in claim 1, further comprises a cooling system (202) configured to decrease the temperature of the coolant and further provide the cooled coolant to the pump (204). 25
4. The battery pack (100) as claimed in claim 1, wherein the encapsulant (110) being thermally conductive and electrically insulating, and configured to conduct heat from the plurality of cells (108) to the cold plate assembly, wherein the encapsulant (110) being an epoxy 30 material.
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5. The battery pack (100) as claimed in claim 1, wherein at least the portion of the plurality of cells (108) being covered being within a range of 20% to 30% of a height of the plurality of cells (108).
6. The battery pack (100) as claimed in claim 1, wherein the plurality of 5 cells (108) being disposed adjacent to the first plate (112a), wherein the encapsulant (110) being sandwiched between the plurality of cells (108) and the first plate (112a) to enable dissipation of heat from the plurality of cells (108) through the encapsulant (110) to the first plate (112a) of the cold plate assembly. 10
7. The battery pack (100) as claimed in claim 1, wherein the first plate (112a) and the second plate (112b) being connected together by brazing.
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8. The battery pack (100) as claimed in claim 1 comprising of a battery box (116), wherein the battery box (116) comprising of a plurality of side walls (116b), a top cover (116a), and a bottom cover (116c), wherein the first plate (112a), and the second plate (112b) being configured to act as the bottom cover (116c) or the top cover (116a) 20 of the battery pack (100).
9. The battery pack (100) as claimed in claim 1, wherein the second plate (112b) comprising one or more inlets (118a) and one or more outlets (118b), the pump (204) being configured to pump the coolant ingress 25 using the one or more inlets (118a) and pump (204) the coolant egress using the one or more outlets (118b) to the cooling system (202).
10. The battery pack (100) as claimed in claim 1, wherein the pump (204) being communicatively coupled with a battery management system 30 (BMS) (104) of the battery pack (100), wherein the BMS (104) being configured to regulate a flow rate of the coolant via the pump (204) based on a charging rate of the battery pack (100), a discharging rate
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of the battery pack (100), and an ambient temperature surrounding the battery pack (100).
Dated this 26th day of July 2023.