DESC:TECHNICAL FIELD
[0001] The present subject matter described herein generally relates to an energy storage device.
BACKGROUND
[0002] The energy storage device industry in continually expanding to meet the increasing energy needs of the portable equipment, transportation and communication markets. Conventionally, lead acid energy storage devices were the first choice of the manufacturers, but with passage of time and the development in the technology, the manufacturers now have the option of replacing the lead acid energy storage device with high energy density devices e.g. a Lithium-ion energy storage device.
[0003] Lithium-ion energy storage devices or lithium-ion batteries, have captured a substantial share, not only of the secondary consumer energy storage device market but, a major share of OEM hybrid energy storage device, vehicle, and electric vehicle applications as well. Lithium-ion energy storage devices provide high-energy density and high specific energy, as well as long cycle life. For example, Lithium -ion energy storage devices can deliver greater than 1,000 cycles at 80% depth of discharge.

BRIEF DESCRIPTION OF THE DRAWINGS
[0004] The detailed description is described with reference to an energy storage device for a vehicle along with the accompanying figures. The same numbers are used throughout the drawings to reference like features and components.
[0005] Fig. 1 illustrates an exploded view of an energy storing device, in accordance with an embodiment of the present invention.
[0001] Fig. 2 illustrates an inner side view of a right casing of an energy storing device, in accordance with an embodiment of the present invention.
[0002] Fig. 3 illustrate a side view of an energy storing device, in accordance with an embodiment of the present invention.
[0003] Fig. 4 illustrates another side view of an energy storing device, in accordance with an embodiment of the present invention.
DETAILED DESCRIPTION
[0004] Usually, energy storage devices use various configurations of potable battery packs. A battery pack is a configuration of a set of any number of identical or non-identical battery cells. A battery pack usually consists of hundreds of battery cells connected in series and parallel, including battery packs made up of several battery modules, with each battery module containing multiple battery cells in series, parallel, or series-parallel configuration. A well-designed battery pack should have the following features: 1) the battery cells are reasonably well balanced with means for regular cell balancing, and 2) the battery pack should be effectively cooled/heated so that the battery pack does not encounter uncontrolled temperature variations.
[0005] A battery pack, in addition to the individual cells or batteries, also includes the interconnectors that connect the leads of the battery cells. Such interconnectors can be made out of wires, fashioned into a wiring harness, or made out of metallic plates. The metallic planar interconnectors are also sometimes referred to as busbars. Additionally, battery packs are also connected to some form of a battery management system which monitors the health of the battery pack. It is vital to ensure that the cells in the battery pack charge and discharge uniformly, and do not heat too much. Known methods of cooling a battery pack with enhanving cooling surfaces or providing forced external cooling medium often are undesirable with ever growing need for a compact battery pack which can be squeezed into a compact layout of a product and still be thermally efficient and light weight. Heating is the nemesis of battery packs and thus there exists a challenge to provide a thermally efficient battery pack within compact layout and having low weight
[0006] Therefore, an objective of the present subject matter is to provide a compact and thermally efficient battery pack which can ensure faster cooling of the battery pack and minimize risks associated with heating of the battery packs.
[0007] In pursuance of the stated objective the battery modules as per known art are housed together within a battery cover. These battery modules are electrically interconnected within the battery cover.
[0008] In conventional battery covers a large number of battery modules are housed together in a battery box and internally wired with interconnection cables. This is because the complexity in the wiring can result in a wrong connection, leading to short circuit and explosion of the battery. Also, after a period of time, the connecting terminals of a complicated wiring has a higher chance of getting rotated from its axis and getting loosened, thus leading to continuous failure of battery terminals.
[0009] Some other known arts address the problem of pasting of cables, such as sensing cables with the battery module, by introducing wire fixing ribs within the battery cover to guide the cables. This is because the pasting of the cables with the battery modules makes the battery module aesthetically poor. Also, the cost for pasting the cables in the module increases the overall manufacturing cost of the battery.
[00010] Other known arts disclose a battery module where the battery connection is done by bolt fastening. The connections tend to become flexible over a period of time, because of the vehicle vibrations and the jolts and jerks produced by the vehicle, in vehicle running condition. Thereby, there is always a risk of short circuits, and open circuits. In counter such problem, some inner cell box battery modules are arranged closely, the flow of air caused by the cooling of is difficult, the battery temperature rises quickly under a large current discharge condition, which not only affects the quality of the battery, but also increases instability, potential safety hazard of the battery box.
[00011] However, none of the known arts disclose about overcoming the problems related to compact and safe housing of the battery modules which are robust and frugal against known problems.
[00012] In another known art, plurality of covers is provided to the battery module wherein the base of the battery module is covered with a separate cover. The cover has a gasket which prevents leakage from flowing out of the casing. However, such battery covers do not meet the desired Ingress protection code ratings, neither such casing ensures proper cooling of the hotspots. A hotspot area often occurs in a top region where voltage sensing points are located.
[00013] Thereby, the subject matter aids in providing an improved energy storage device which aids in enhancing the heat dissipation while overcoming all problems cited earlier and other problems of known arts. Thereby the present subject matter increases the performance and the durability of the vehicle.
[00014] Hence, there is a need of addressing the above circumstances and problems of the known arts.
[00015] The present subject matter has been devised in view of the above circumstances as well as solving other problems of the known art.
[00016] The present subject matter discloses an energy storing device comprising one or more battery module for storage of energy and a battery casing for covering said one or more battery module. The battery casing includes: a left casing. The left casing covers said one or more battery modules from a left side of said one or more battery module. A right casing covers said one or more battery modules from a right side of said one or more battery module and a top casing covers said one or more battery modules from a top side of said one or more battery module. The left casing and said right casing include a plurality of fins being disposed on an inward surface of said left casing and said right casing respectively wherein said inward surface faces towards said one or more battery module.
[00017] In another embodiment, said plurality of fins being disposed on a top portion of said inward surface of said left casing and said right casing respectively.
[00018] In another embodiment, said left casing includes a first inward protruding portion. The first inward protruding portion being integrated with said inward surface of said left casing.
[00019] In another embodiment, the right casing includes a first inward protruding portion being integrated with said inward surface of said right casing.
[00020] In another embodiment, the first inward protruding portion and said second inward protruding portion being configured to join each other for forming a base. The base covers said one or more battery module.
[00021] In another embodiment, the one or more battery module includes one or more voltage sensing points in vicinity of said plurality of fins.
[00022] In another embodiment, said left casing and said right casing being joined with each other through a plurality of mounting portions.
[00023] In another embodiment, the left casing and said right casing includes a plurality of outward fins disposed on an outward surface of said left casing and said right casing respectively.
[00024] Exemplary embodiments detailing features regarding the aforesaid and other advantages of the present subject matter will be described hereunder with reference to the accompanying drawings. Various aspects of different embodiments of the present invention will become discernible from the following description set out hereunder. Rather, the following description provides a convenient illustration for implementing exemplary embodiments of the invention. 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 subject matter, as well as specific examples thereof, are intended to encompass equivalents thereof. Further, it is to be noted that terms “upper”, “down”, “right”, “left”, “front”, “forward”, “rearward”, “downward”, “upward”, “top”, “bottom”, “exterior”, “interior” and like terms are used herein based on the illustrated state or in a standing state of the two wheeled vehicles with a driver riding thereon. Furthermore, arrows wherever provided in the top right corner of figure(s) in the drawings depicts direction with respect to the vehicle, wherein an arrow F denotes front direction, an arrow R indicates rear direction, an arrow Up denotes upward direction, an arrow Dw denotes downward direction, an arrow RH denotes right side, and an arrow LH denotes left side. Also, it is to be understood that the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting.
[00025] Fig 1 of the present invention illustrates an exploded view of an energy storing device (100), in accordance with a preferred embodiment of the present invention. The energy storing device (100) comprising: one or more battery module (103) for storage of energy. A battery casing (101, 102, 104 – shown in Fig 3) covers the one or more battery module (103) from both lateral sides and from the top and the bottom side of the one or more battery module (103). The battery casing (101, 102, 104) includes a left casing (101), a right casing (102) and a top casing (not shown). The left casing (101) covers said one or more battery modules (103) from a left side of the one or more battery module (103). Similarly, the right casing (102) covers the one or more battery modules (103) from a right side of the one or more battery module (103). The left casing (101) and the right casing (102) provide a lateral covering to the one or more battery module (103). The left casing (101) and the right casing (102) prevent entry of any dust particles or solid pebbles from directly hitting the one or more battery module (103) from left, right or bottom of the one or more battery module (103). Also, the left casing (101) and the right casing (102) prevent entry of liquid to come in contact with the one or more battery module from left, right or bottom of the one or more battery module (103). For protection from the bottom side of the one or more battery module (103), the left casing (101) and the right casing (102) are provided a first inward protruding portion (101A) and a second inward protruding portion (102A- shown in Fig. 2) respectively. The first inward protruding portion (101A) is integrated with an inward surface (107) of the left casing (101). Similarly, on the right side of the one or more battery module (103) a second inward protruding portion (102A - shown in Fig. 2) is provided which is integrated to the inner surface (107) of the right casing (102). The first inward protruding portion (101A) and the second inward protruding portion (102A) are provided on a lowermost portion of the left casing (101) and the right casing (102) respectively. The first inward protruding portion (101A) and the second inward protruding portion (102A) are abuttingly connected with each other to enclose the casing (101, 102) and for covering the base of one or more battery module (103). As per an aspect of the present invention, the provision of first inward protruding portion (101A) and the second inward protruding portion (102A) form a base for covering the base portion of the one or more battery module (103) thereby eliminating the requirement of a dedicated lower casing. Also, due to elimination of requirement for a lower casing, there is no need to provide a horizontal gasket for integrating any lower casing. The left casing (101) and the right casing (102) are integrated by a liquid or a semi-liquid seal.
[00026] In another embodiment, a vertical gasket is provided between the left casing (101) and the right casing (102). Also, the left casing (101) and the right casing (102) are connected to each other through plurality of mounting portions (110). The left casing (101) and the right casing (102) are fastened with each other through plurality of fastening means being inserted in the plurality of mounting portions (110).
[00027] In an embodiment, the one or more battery module (103) includes a plurality of interconnectors (109) and a plurality of voltage sensing points (108). The plurality of interconnectors (109) are used to make electrical connection between the one or more cells by means of the plurality of voltage sensing points (108). The one or more cells are welded to the interconnector (109) to form the one or more battery module (103). In such a configuration, the plurality of voltage sensing points (108) are disposed on top-most portion of the one or more battery module (103). While the one or more battery module (103) is in an electrical operation, the voltage sensing points (108) produce heat in the top most region of the one or more battery module (103). Due to heat, the top most region of the one or more battery module (103) becomes a hotspot and the top most region of the one or more battery module (103) is susceptible to over-heating related problems. Therefore, to resolve issues excessive heat containment in the top most region of the one or more battery module (103), the present invention provides plurality of fins (105) on the inner surface (107) of the left casing (101) and the right casing (102) respectively. The plurality of fins (105) enables augmented air cooling of the top most region of the one or more battery module (103).
[00028] In an embodiment, the plurality of fins (105) being vertical in shape and each of the fin of the plurality of fins (105) being equidistant from an adjacent fin of the plurality of fins (105). As a result, the left casing (101) and the right casing (102) act as a heat sink for the one or more battery module (103).
[00029] In another embodiment, the left casing (101) and the right casing (102) are provided with plurality of outward fins (106) on an outer face of the left casing (101) and the right casing (102) respectively.
[00030] Fig. 2 illustrates an inner side view of a right casing (102) of the energy storing device (100), in accordance with an embodiment of the present invention. As per the illustrated embodiment, the right casing (102) includes an inner surface (107) and the second inward protruding portion (102A). The inner surface (107) faces towards the one or more battery module (103) from the right side of the one or more battery module (103). In the bottommost portion of the right casing (102), the second inward protruding portion (102A) is provided which corresponds to the bottommost portion of the one or more battery module (103).
[00031] Fig. 3 illustrate a side view of the energy storing device (100), in accordance with an embodiment of the present invention. As per the illustrated embodiment, the energy storing device (100) is provided with a top casing (104) for covering the top most portion of the one or more battery module (103). The top casing (104) prevents entry of any foreign material such as dust, pebbles or any liquid or semi-liquid to come in contact with the top most portion of the one or more battery module (103) from an upper side of the one or more battery module (103).
[00032] In an embodiment, the top casing (104) act as an additional heat sink for the energy storing device (100). In another embodiment, the top casing (104) is additionally provided a fan which provides additional cooling of the top most region of the one or more battery module (103).
[00033] Also, the provision of the left casing (101), the right casing (102) and the top casing (104) ensures a compact packaging of the one or more battery module (103).
[00034] Fig. 4 illustrate another side view of the energy storing device (100), in accordance with an embodiment of the present invention. As per the illustrated embodiment, the top casing (104) is removed.
[00035] In an embodiment, the casing (101, 102, 104) is made from a heat resistant material. In another embodiment, the casing (101, 102, 104) being made from a sheet metal instead of a plastic material. The advantage of such configuration is that, the sheet metal withstand fire for a brief period of time in contrast to the plastic material. As a result, in case of accident if the one or more battery module (103) catches fire, the casing (101, 102, 104) would withstand fire for a brief period of time.
[00036] Many modifications and variations of the present subject matter are possible in the light of above disclosure. Therefore, within the scope of claims of the present subject matter, the present disclosure may be practiced other than as specifically described.

LIST OF REFERENCE NUMERAL
100: Energy Storing Device
101: Left Casing
101A: First Inward Protruding Portion
102: Right Casing
102A: Second Inward Protruding Portion
103: One or More Battery Module
104: Top Casing
105: Plurality of Fins
106: Plurality of Outward Fins
107: Inner Surface
108: Plurality of Voltage Sensing Points
109: Plurality of Interconnectors

,CLAIMS:We Claim:
1. An energy storing device (100) comprising:
one or more battery module (103) for storage of energy;
a battery casing for covering said one or more battery module (103);
wherein, said battery casing includes:
a left casing (101), said left casing (101) covering said one or more battery modules (103) from a left side of said one or more battery module;
a right casing (102), said right casing (102) covering said one or more battery modules (103) from a right side of said one or more battery module; and
a top casing (104), said top casing (104) covering said one or more battery modules (103) from a top side of said one or more battery module;
wherein, said left casing (101) and said right casing (102) includes a plurality of fins (105) being disposed on an inward surface (107) of said left casing (101) and said right casing (102) respectively; and wherein said inward surface (107) facing towards said one or more battery module (103).
2. The energy storing device (100) as claimed in claim 1, wherein said plurality of fins (105) being disposed on a top portion of said inward surface (107) of said left casing (101) and said right casing (102) respectively.
3. The energy storing device (100) as claimed in claim 1, wherein said left casing (101) includes a first inward protruding portion (101A), said first inward protruding portion (101A) being integrated with said inward surface of said left casing (101).
4. The energy storing device (100) as claimed in claim 1, wherein said right casing (102) includes a first inward protruding portion (102A), said second inward protruding portion (102A) being integrated with said inward surface of said right casing (102).
5. The energy storing device (100) as claimed in claim 3 and 4, wherein said first inward protruding portion (101A) and said second inward protruding portion (102A) being configured to join each other for forming a base, said base being capable of covering for said one or more battery module (103).
6. The energy storing device (100) as claimed in claim 1, wherein said one or more battery module (103) include one or more voltage sensing points (108) disposed in vicinity of said plurality of fins (105).
7. The energy storing device (100) as claimed in claim 1, wherein said left casing (101) and said right casing (102) being joined with each other through a plurality of mounting portions (110), said plurality of mounting portion (110) being provided on inner surface (107) of each of said left casing (101) and said right casing (102).
8. The energy storing device (100) as claimed in claim 1, wherein said left casing (101) and said right casing (102) includes a plurality of outward projecting fins (106) disposed on an outward surface of said left casing (101) and said right casing (102) respectively.