WO2018055500A1 - Variable sized ribs in an energy storage device casing - Google Patents

Variable sized ribs in an energy storage device casing Download PDF

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Publication number
WO2018055500A1
WO2018055500A1 PCT/IB2017/055622 IB2017055622W WO2018055500A1 WO 2018055500 A1 WO2018055500 A1 WO 2018055500A1 IB 2017055622 W IB2017055622 W IB 2017055622W WO 2018055500 A1 WO2018055500 A1 WO 2018055500A1
Authority
WO
WIPO (PCT)
Prior art keywords
rib
casing
energy storage
storage device
battery
Prior art date
Application number
PCT/IB2017/055622
Other languages
French (fr)
Inventor
Arvind UNNIKRISHNAN
Aniruddh REDDY
Adhithya SRINIVASAN
Original Assignee
Ather Energy Pvt. Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ather Energy Pvt. Ltd. filed Critical Ather Energy Pvt. Ltd.
Publication of WO2018055500A1 publication Critical patent/WO2018055500A1/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/14—Arrangements or processes for adjusting or protecting hybrid or EDL capacitors
    • H01G11/18—Arrangements or processes for adjusting or protecting hybrid or EDL capacitors against thermal overloads, e.g. heating, cooling or ventilating
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
    • H01G11/78—Cases; Housings; Encapsulations; Mountings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/61—Types of temperature control
    • H01M10/613—Cooling or keeping cold
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

  • the present invention relates to a casing for an energy storage device and more particularly, to variable sized ribs integrated in the casing for maintaining proper thermals.
  • ribs are mounted/placed in the battery casing (for instance, the ribs are mounted at the bottom and protruding inside the battery casing), where the ribs increase heat transfer area and subsequently reduce the temperature.
  • uniform sized ribs is not effective in scenarios where heat generated inside the battery casing is not uniform and varies from steering side to the opposite side, since uniform sized ribs may be able to reduce the heat or temperature at one side but may not be able to reduce the heat temperature at other side where there is high temperature.
  • the casing may comprise of at least one electronic circuitry compartment [202], wherein the electronic circuitry compartment [202] is formed by the protrusion of the at least one second rib [104] that is subsequently extended across the two side walls of said casing.
  • at least one vertical channel [204] is formed from each of the at least one first rib [102] and the at least one second rib [104] (more specifically, through crest and trough portion of said rib), wherein said at least one vertical channel [204] is configured to accommodate a battery cell and/or various kind of electronic components.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

Embodiments of the present invention relate to a casing for an energy storage device, wherein the casing comprises at least one first rib [102] of first variable dimension and at least one second rib [104] of second variable dimension, wherein the at least one first rib [102] and the at least one second rib [104] extend from at least one wall of the casing to an opposite wall. Further, the at least one first rib [102] has at least one protruded section and the at least one second rib [104] has at least one slot section such that the at least one protruded section of the at least one first rib [102] is coupled to the at least one slot section of the at least one second rib [104].

Description

VARIABLE SIZED RIBS IN AN ENERGY STORAGE DEVICE CASING
FIELD OF INVENTION
The present invention relates to a casing for an energy storage device and more particularly, to variable sized ribs integrated in the casing for maintaining proper thermals.
BACKGROUND OF INVENTION
The following description of related art is intended to provide background information pertaining to the field of the invention. This section may include certain aspects of the art that may be related to various aspects of the present invention. However, it should be appreciated that this section be used only to enhance the understanding of the reader with respect to the present invention, and not as admissions of prior art.
An energy storage device, be it a lead acid battery, a nickel metal hydride battery, a lithium ion battery or a capacitor, has a wide range of applications such as in the mobile industry, automobile industry, home appliances, etc. However, besides the variety of applications of the energy storage device, there are many limitations associated with them, inter alia, heating problem in the battery that not only damages the battery but also reduces the life and working efficiency of the battery. Additionally, when the cells in the battery are not chemically uniform, the heating and cooling time and rate thereof, of each individual cell in the battery varies with respect to each other, leading to disparity in the temperatures in the battery casing as well as reduced battery life. Another reason for the disparity in the temperatures may be due to faulty mounting structures since they play a vital role in controlling the heating of the battery. This may hamper the device's life and performance. Also, in another scenario, heat may accumulate inside the casing due to heating of various battery components, thereby leading to deterioration of the cell/ battery capacity/casing.
Considering the high caloric value exhibited by the batteries, it is required to enhance the cooling performance of the batteries. Therefore, there exist several known thermal management techniques/solutions to overcome the above-mentioned limitations. In one such technique, ribs are mounted/placed in the battery casing (for instance, the ribs are mounted at the bottom and protruding inside the battery casing), where the ribs increase heat transfer area and subsequently reduce the temperature. However, such technique of using uniform sized ribs is not effective in scenarios where heat generated inside the battery casing is not uniform and varies from steering side to the opposite side, since uniform sized ribs may be able to reduce the heat or temperature at one side but may not be able to reduce the heat temperature at other side where there is high temperature.
In another known thermal management technique, the battery casing comprises rib-like projections for supporting the cell elements and enabling circulation of electrolytic fluid/ thermally conducting fluid through the cell element from the bottom of the casing. However, this technique is not efficient and causes a number of problems including reduced operational life of the battery, electrical shorting, etc.
In view of the above and other limitations inherent in the existing solutions/techniques for reducing heat accumulation and temperature inside the casing, there exists a need of a battery casing with variable sized ribs with improved characteristics such as improved strength, heat resistance and reduced temperature.
SUMMARY OF INVENTION
This section is provided to introduce certain objects and aspects of the disclosed methods and systems in a simplified form that are further described below in the detailed description. This summary is not intended to identify the key features or the scope of the claimed subject matter.
In view of the above shortcomings of the existing systems, as discussed in the background section, it is apparent that there exists a need to provide a casing for an energy storage device with variable sized ribs. Another object of the present invention is to mount the variable sized ribs in the battery casing in an efficient and effective manner. Yet another object of the present invention is to increase the battery efficiency by optimising the temperature of the battery casing.
In view of the abovementioned objects, the embodiments of the present invention aim at providing an efficient and well-assembled casing for an energy storage device, the casing comprising: at least one first rib of first variable dimension, wherein the at least one first rib extends from at least one wall of the casing to an opposite wall, and the at least one first rib has at least one protruded section; at least one second rib of second variable dimension, wherein the at least one second rib extends from the at least one wall of the casing to the opposite wall, the at least one second rib has at least one slot section. The at least one protruded section of the at least one first rib is coupled to the at least one slot section of the at least one second rib. The casing also comprises a plurality of cells supported by the at least one first rib and the at least one second rib.
BRIEF DESCRIPTION OF THE DRAWINGS
The accompanying drawings, which are incorporated herein, and constitute a part of this invention, illustrate exemplary embodiments of the disclosed methods and systems in which like reference numerals refer to the same parts throughout the different drawings. Some drawings may indicate the components using block diagrams and may not represent the internal circuitry of each component. It will be appreciated by those skilled in the art that incorporation of such drawings includes the electrical components or circuitry commonly used to implement such components.
FIG.l illustrates a perspective view of ribs to be placed together in a casing in accordance with exemplary embodiments of the present invention.
FIG. 2 depicts a perspective view of an electronic circuitry compartment, being protruded on the ribs, in accordance with exemplary embodiments of the present invention.
It may be evident to skilled artisans that mechanical components in the figures are only illustrative, for simplicity and clarity, and have not necessarily been drawn to scale. For example, the dimensions of some of the mechanical components in the figures may be exaggerated relative to other components to help to improve understanding of embodiments of the present invention. DETAILED DESCRIPTION
In the following description, for the purposes of explanation, various specific details are set forth in order to provide a thorough understanding of embodiments of the present invention. It will be apparent, however, that embodiments of the present invention may be practiced without these specific details. Several features described hereafter can each be used independently of one another or with any combination of other features. An individual feature may not address any of the problems discussed above or might address only one of the problems discussed above. Some of the problems discussed above might not be fully addressed by any of the features described herein. Example embodiments of the present invention are described below, as illustrated in various drawings in which like reference numerals refer to the same parts throughout the different drawings.
The present invention relates to a casing for an energy storage device. The casing comprises at least one first rib of first variable dimension and at least one second rib of second variable dimension, wherein the at least one first rib is coupled to the at least one second rib. The casing also comprises a plurality of cells supported by the at least one first rib and the at least one second rib and said cells placed on at least one cell spacer; at least one cooling fan; and a thermal conducting fluid present in an inner portion of the casing and that allows the heat to be transferred to the casing walls. The at least one first rib and the at least one second rib may be configured to be fitted/housed inside a vehicle.
As used herein, an 'energy storage device' refers to an apparatus/device/unit for storing energy, particularly, electric energy. The energy storage device may include, but not limited to, a lead acid battery, a nickel metal hydride battery, a lithium ion battery, a capacitor and any such device as may be obvious to person skilled in the art.
As used herein, a 'casing' is configured to support/house the energy storage device. The application of the casing of the energy storage device may include, but not limited to, a vehicle, a control system, a charging unit, a motor and any computing device such as mobile, laptop, pager, etc. Further, the casing may be circular in shape or may be having at least three side walls. As used herein, the 'vehicle' may be any vehicle having at least two wheels. Also, the vehicle may include, but not limited to, an electric vehicle, a hybrid vehicle, a conventional vehicle, an alternative fuel vehicle and any such vehicle as may be obvious to person skilled in the art.
As used herein, the 'first variable dimension' and 'second variable dimension' may comprise one of an angular dimension, spherical dimension, height, length, width and thickness. Further, the first variable dimension and the second variable dimension are based on a heat gradient and a cell thermal.
As illustrated in FIG. 1, the at least one first rib [102] extends from at least one wall of the casing to an opposite wall of the casing, wherein the at least one first rib [102] is of the first variable dimension. Also, the height of the at least one first rib [102] at a front end of the casing is less than the height of the first rib [102] at a rear end of the casing. Further, the first rib [102] has at least one protruded section. Similarly, the at least one second rib [104] extends from the at least one wall of the casing to the opposite wall of the casing, wherein the at least one second rib [104] is of the second variable dimension. Further, the second rib [104] has at least one slot section. The first rib [102] and the second rib [104] are coupled to one another such that the at protruded section of the first rib [102] is coupled to the slot section of the second rib [104].
In an embodiment, the at least one first rib is fixed to the at least one second rib of the casing through at least one rib groove i.e. in the form of a long, narrow cut or depression. In an embodiment, the at least one first rib [102] and the at least one second rib [104] may be spatially arranged in the casing.
Therefore, the present invention encompasses the battery casing for efficiently mounting/configuring the at least one first rib [102] and the at least one second rib [104] to optimize the effect of heat dissipated by the battery thereby optimizing thermal properties of said battery casing.
The invention also encompasses an energy storage device casing comprising four side walls, wherein the wall facing the steering of the vehicle is termed as the steering side wall. The length of the at least one first rib [102] and the at least one second rib [104] substantially increases from the steering side wall of the casing to the opposite side wall, wherein said increase is based on the cooling efficiency of the energy storage device.
The invention also encompasses an energy storage device casing comprising four side walls, wherein the walls adjacent to the steering side wall are termed as rail side walls. The length of the at least one first rib [102] and the at least one second rib [104] substantially increases from the rail side walls to a centre of the casing.
Further, the present invention encompasses that the at least one first rib [102] or the at least one second rib [104] has non-linear structure and further comprise of varied structures including, but not limiting to, a wavy structure, a zigzag structure and any such non-linear structure as may be obvious to a person skilled in the art. The non-linear structured ribs increases the surface area for the heat transfer and therefore, increases the efficiency of the ribs.
In an exemplary embodiment and as illustrated in FIG.2, the casing may comprise of at least one electronic circuitry compartment [202], wherein the electronic circuitry compartment [202] is formed by the protrusion of the at least one second rib [104] that is subsequently extended across the two side walls of said casing. Further, at least one vertical channel [204] is formed from each of the at least one first rib [102] and the at least one second rib [104] (more specifically, through crest and trough portion of said rib), wherein said at least one vertical channel [204] is configured to accommodate a battery cell and/or various kind of electronic components.
A person skilled in the art may be cognizant of the fact that the fabrication/mounting/positioning of the ribs in the battery casing may vary to maintain thermal properties in an efficient manner. The battery casing is thus, provided to optimize the thermal properties with the help of the first ribs and second ribs of variable/constant size.
Although the present invention has been described in considerable detail with reference to certain preferred embodiments and examples thereof, other embodiments and equivalents are possible. Even though numerous characteristics and advantages of the present invention have been set forth in the foregoing description, together with functional and procedural details, the disclosure is illustrative only, and changes may be made in detail, within the principles of the invention to the full extent indicated by the broad general meaning of the terms. Thus, various modifications of the presently disclosed system without deviating from the intended scope and spirit of the present invention are possible and are included in the scope of the present invention.

Claims

We claim
1. A casing for an energy storage device, the casing comprising:
- at least one first rib [102] of first variable dimension, wherein the at least one first rib [102] extend from at least one wall of the casing to an opposite wall, and the at least one first rib [102] has at least one protruded section;
- at least one second rib [104] of second variable dimension, wherein the at least one second rib [104] extend from the at least one wall of the casing to the opposite wall, the at least one second rib [104] has at least one slot section, and the at least one protruded section of the at least one first rib [102] is coupled to the at least one slot section of the at least one second rib [104]; and
- a plurality of cells supported by the at least one first rib [102] and the at least one second rib [104].
2. The casing as claimed in claim 1, wherein at least one of the at least one first rib [102] and the at least one second rib [104] has a non-linear structure.
3. The casing as claimed in claim 1, wherein the first variable dimension and second variable dimension comprise one of an angular dimension, a spherical dimension, a height, a length, a width and a thickness.
4. The casing as claimed in claim 1 and claim 4, wherein the height of the at least one first rib
[102] at a front end of the casing is less than the height of the at least one first rib [102] at a rear end of the casing.
5. The casing as claimed in claim 1, wherein the first variable dimension and the second variable dimension are based on a heat gradient and a cell thermal.
PCT/IB2017/055622 2016-09-20 2017-09-18 Variable sized ribs in an energy storage device casing WO2018055500A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IN201641032018 2016-09-20
IN201641032018 2016-09-20

Publications (1)

Publication Number Publication Date
WO2018055500A1 true WO2018055500A1 (en) 2018-03-29

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PCT/IB2017/055622 WO2018055500A1 (en) 2016-09-20 2017-09-18 Variable sized ribs in an energy storage device casing

Country Status (1)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6376126B1 (en) * 1999-10-13 2002-04-23 Johnson Controls Technology Company Composite battery container with integral flexible ribs
US9059446B2 (en) * 2010-11-05 2015-06-16 Samsung Sdi Co., Ltd. Battery module

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6376126B1 (en) * 1999-10-13 2002-04-23 Johnson Controls Technology Company Composite battery container with integral flexible ribs
US9059446B2 (en) * 2010-11-05 2015-06-16 Samsung Sdi Co., Ltd. Battery module

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