SE2030079A1 - Fully Encapsulated Immersion Cooling for battery modules and systems - Google Patents

Abstract

[0047] The present invention discloses an immersion cooled battery module holder where the Immersion Coolant is cooled by a cooling plate and the immersion coolant is fully contained in the module container. Once the System Coolant is entering the cooling plate of the module which can be on the bottom or on the sides resulting the plate regulating the temperature of the Immersion Coolant. The module is a fully encapsulated solution containing cells, electronics, interconnects and immersion coolant.

Description

Fully Encapsulated Immersion Cooling for battery modules and systems PATENT APPLICATION TITLE: Fully Encapsulated Immersion Cooling for battery modules and systems BACKGROUND Field of the Invention: [OÜGH The present invention relates to battery cooling Structures, andparticularly to an lmmersion Coolant Which is encapsulated in theCell/Electronics compartment of the module securing the fire resistance ofthe module at all time and securing the lmmersion Coolant from contaminations in a tamper proof Way.

Description of the Related Art: [GÛÜZl (Üenyeiititirialiyg a systern tliat eircïnlates a iiqiiid retrigerttiit insidean electronic device and ceels elerneiits such as a CPU and a rriernery' en asuhstrate is lrneiyii. Htiiyerfer, since tliis tgøpe ef systern pairtialllly ceels asiieeitic elenierit, in the case et an electreiiie detfice in *avliieh a large iirirnlieret” iieat-geiieratiiig eienieiits are denselyf arraniged en a sulastrate, liqriidl eeeling and air eeelirig are performed te ceel the entire seahstrate, Sirniiarly, in an electric vehicle including an iiiteriiai ceinbiistienengine arid a battery' rievtfei* seenrce, a iieyyer' stipnly device in yrfnieli a largernnnhei" til hatteries are connected is iised a driving iieyyei* srairee. Apers/er* supply* tleviee used in a cenyeritierial electric yfeliiele lias a largeriuniher til battery rnedales erinrieeterl iii series and heused in a case. Thehattery' rnednle is teifrned hy eenneeting six unit cells :nade et* niclrel»liytlrtigert hatteries, iyhich are seeenrlary' hatteries, in a straight lirie in serieste terni a reda ln a *reliicle pevrfer sripplyf desfice, a large nninher' el" batteryrrnitlales are eenneeterl in series te increase the etitpiit yeltatge. 'llhis perifersripplyf rlesfiee is diScliargerl vrfith a large etirreiit When accelerating theanternehile and aeeeierated hy a rneter, arid is enarged with a large current“ey a regeiieratisfe hrake *when deeelerating er going rlervn a slepe. F er thisreaseri, a battery niednle heetinies quite high tennieratiire. Siriee the hatteryftleterierates in electrical perferniariee att high ternperatnres, it is fercetllyeeeled te a teniperattire leyrfer* than tlie set terriperature. ln a tarm/er supply apparatur, usirig a large rinrnber et" hatteryf niednles, it is iinpertarit te ceel each hatteryi rnotinie niiifoririijyf. This is tiecatise, if there is a teiripeiatnireditfterence hetweeii the hattersf inorhiies, the battery' ntotinie vvhoseteniperattire has heen increased is qttichiy cieteriorateii and the iife isshortened., As a ctioiing structure for cooiing a iarge ntiniher of hattersfrnodnies to a sitnifotrrn teiriperatnre, a structure for eooiiiig *oatteiy rnodtiies tvith a. iiqriiti has heen tietfeioperí, There are rnnititaie insveritioris that have heen nroposed in prior artregarding atisfaiieeinients in siniiiztr tieiti. For instance, a. Spanish patentILSoiÅÉBTS on Barttery grottan tvith oooiiiig systern is issneci to Goïeciitšinerggy' Co istti, 'ifhe patent is on a groiip tifhzttteries (ititlï) iiaving a eooiiiigsjystern, ooiriprisirig: a pittraiity of battery units connected in series or inparaiiei aridi arranged in a tiiane to sitnpijv' porter; a niitrztiity of therrnoeoittiiehars (itšš) eacii hasfing a ntnnher of sicie vvaiis (1925) anti trvo enas (itšfli),irieateri in a rniririie tsositiriri hettteeri the hztttery' itriits (i Gi) and sithstaritiaiiyin contact tvith the battery nnits (iOi f; hy the sirie Waits (iOZS) to eonrinctiieat titit of the battery' itnits (mi) to hoth enats (192 1); ariri a housing (itšfš)for containing the hatteify iinits (mi) and the tiierrnocotipie hars (iQ-Q) aint tocrinrittct heat front the eriris (1921) ot" the tiierrriocottnie hars (H32) to theotrtsirie oi' the sheii at ieast one enti ot" the tiierinaiiyconrioctitfe trott (192) is corinecteti to the iitiitsing (tili) :and heconies aninternai support strnctnie of the iionsing (iOÉt/i; oharacterizeci in that thetiierniai coririttcttii* har (N32) is fixed to the iioasirig (E03) hy scretvs (itšfši)screvverii into a screw hoie (N22) of the therniai conrinctor har (itššf) and theiieat of the therntai ciiririitctrir har (iÛZ) eari he corirhtcteti to the (iittsirie of the honsiiig (163) hy ineans of the screws :which the thetrnocoiictuetitve inet iiiade of a tiieniioeondueting iiiateriat, nietat oi' aiiofy., Another patent 'tt/TO i on Battery pack iiaviiig a noyeieooting stiuettite is issuett to French .and Korean iiiventots. "the presentiiiveiitioii tetates to a hattery pack cotnptising a reehatgeahte/ctisehatgeahiehatteiy oett ot tinit mottutes Cunit setts). The hattety paeh eontpifises: ahattety' module group including one ot iiiote battery' iiioetutes in yvhieh saidunit eetts are spztcett apart ticoin each other hy' a spaeiiig for ttoty ot” ateitigetaiit antt einhecttieá *afithiii a patch case in the ytfictthtvise ttiifeetioii(ttaiistfetse ctiteetion) of the hztttetyf packa sttch that the unit ceiis standutiright; tefrigeraiit intet ttnits formed sequeiitiaityf in the space hetweeii aitttyet sutttace titt the pack case and hattety tnotitttes; a tettigetatit outtet unitthtinett in the space hetta/een an tippei' suiftaee of the patch case and theivatteiy tnodute group; an eteettieat cotttponeiit iticatett at one side surface ofthe battery iiiottute group and inountect in an iiitetiiat spaee fotinett hy theteftigetatit outtet ttnit; and a tettigetattt tioty ettannet tiaviiig a sttuetuie inthat the teti'igei'ant iiitrotiticect through a tefrigeraiit intet pott passes thtougiieaeh unit ceit to eottt the unit eetis, atui a pottioii of the rettigetaiit tiassetttittotigti the tinit eetis ttotvs in a sfottex ttovtf to coot the eiectticat eornpoiient atui is disehzttged ttuottgti a tettigetatit outtet ptttt.

Batttery pack hzttving a nevei eeeiiiiig structure 2,4e9,e40iLä2 issued te LG Cheni Ltd. Tiie patent ciiseieses a *battery pack iiaving apiuraiittf efhattery' eeiis er unit inetiuies Cunit eeiisfli, vwhieh ean he ehargeriand disehargeci, rrietinteri in a paeh case, wherein tiie unit eeiis staeked ina tiireetien (a tiireetieii) in ttfhieh the rtnit eeiis are sequentiatiiy' staeiretí inparaiiei te a greittnti in a state in Vvhieh a spaeirig distance fer eeeiarit fiera' isprei/itieci hetvveen the respective unit eeiis te eenstittite a hattertf iiiedttie,tvve er inere *battery rnetitties are arranged in a iierizeritai tiireetieri (an Xdirection) en the piane vaitii respect te a eeeiaiit iiitreriiitïtien ciireetien intifiiieh a eeeiant is intretititeed tiireugh a eeeiant iniet pert in a state in *whieiiïtittivtf ef tiie eeeiant bettveeii the batttery metiuies is restraiiieri te etuistitiite ahatteryi iiieciuie greut), the paeh ease is pretfitiee tvith a tiiew space Ca eeeiaritititretiuetieri part) exteridiitig tireni tite eeeiarit iniet pert te the batteryinetiuie grepp anti anether tietv space (fa eeeiaiit tiiseharge past) extenchngtireni the battery nitnitii es greiip te a eeeiarit tiutiet pert, ariti a etniittrit ttievtfchannel defined betvveeri the eeeiant intreduetien part anti the eeeiantriiseiiarge part is eenfigureti te iiave a structure in ttfiiieii the eeeiant,intretitieeti thretigii the eeeiant intreriuetien part, eeeis the hatterfy ineduies*white passing tiirrrugii tiie specific battery' iiietitiies in a xfertieai tiireetitiri (aY tiireetieii) en the piane :find is diseharged tiireugh the eeeiant chseharge part. [ÛÜÜÉÉE .another patent en (Ieeiing syxsteiii and inethetí et' eieetiniiieapparatns hearing tiatent 2,Gi3,i8725iifä ainis to tateviete a eeeiing sjystetntwhieii eftieientiy' eeeis an entire eieettnnie .apptttartits iising a iiqtiidrefrigeraiit arni easiijy retises waste heat of the eieetteriie aptiarattis. Thestihitinii is :tn eieetteiiie appzttattis i inehities nitiitipie iieating eieiiients 3 ena stihstrate 2. A sytsteni ii eeeiing tiie eieetrniiie apparattis i iiieitiiies: apaeitage meinhei* 5 eneinsiiig the entire sithsttttte 2 iiieinding the eienients fi;a entitainei' iI/É in wvhieii a iiqtiid t'eti'igei'ant C is aeetnntiiated; a heider 16heidiiiig the paekatge iiieinhet 5 in the enntaiiier 12 ttfitii the paeitage tneiiihei*5 iiinnerseti in the liquid refrigeraiit; and a reftigeraiit eireniatinii ineeiiaiiisnittiitniiig retrigertiiit tinvv E' in the eentainet iZ. The retiigetant eiteaitittienmechanism ineiitcies a teftigetaiit eiteiiiatieii passage for taking ent thereiatit/eiy high teinperattire iietiiti rettigetant ftiini att iititiet P4 of tiieeontariiiet i2 and itetnitniiig; the reiatitfeiy' inta' temperature iiqnid retrigeraiitte an iriiet 13 ef the container H2. ßtti eieetrie getietattit, getietatitig eieetrienerver tisiiig the liquid reftigeraiit taken ent finn: the eniitainer i2, is preiøitietí van the iefrigerant eireniatitin pztssagei [GÜÛSE ittiintiier Petter supply* det/fine for tfehieie hearing patent2,G()n,33t956,1t priivities a simnie stntetnre and reiiahiy' iatetveiits iiqnitiieahage anti eftieientiy enats a large ninnher nfhattery inothiies to a irniternitenipetattire. A neifvet siipnhv' tieviee for a tveiiieie iias a afzttettight strncttireand a case i tihed *with a eneiant 3 tiierein, arna is tiispnseá in tiie case i sethat a heitier ease 4 is tiiteetåy ei" tiitectiy attaeheti te the eiieiatit 3. ßttid a pinraiinf nthattery niedtries 2 that are eontaeteá and coated, aiid a jet iiezzie that is distaosed at the hottom of the case l and injects air' irito the eoolant 3in the form tiïfhiihbles. 'iliis poxvei* supply ciexfice jets air into the eoolztnt 3ytfith tiie jet riozzle S, iiloats the jetted htihifiles irito the coolant 3, cools the cooiant 3, sind uses the cooled coolant 3 to recharge the hatteryf. (Zool riovtfii.

There are multiple solutions that have been presented in prior art inregarding cooling systems for complex structures. However, the utility ofthese systems has not been seen in advance form and for the above discussed needs. . . id="p-10" id="p-10"

[0010] The current invention proposes a unique design Which features astandalone Way of supporting, collating, handling, facilitating the complexstructures temperature maintenance. This revolutionary approach marks amajor step toward the goal of creating System Coolant, that never enters thecell/electronics compartment providing a large flexibility in System Coolantsolutions. The battery module solution is encapsulating the battery cells andthe electronics in a shield Immersion Cooled/Heated container. Furthermore,the Immersion Coolant is always Within the module and never circulates outof the module. The external container is made out of thermal insulating plastics. [001 H one of the pirexfious irweritittris arad paftents, taken either sin gly or in eornbination, is seen to describe the instant iiivention as clainied.. Hence, the inväntar of :ha prasfssnt invention pfoposes to resoivf: 211161 sívnzmoïant fssxästaïïittfizcíïniczai difíïcuítiss tø eíialïina/te tha avfänwismeiatioiaefii shortcoxniiags oífprioï Eífï.

BRIEF DESCRIPTION OF THE DRAWINGS The aeeempanyingg tigtttes, vwhete íike reference ntnnetais fettet teidentical et futtetienaiiy' sitniiar eietnetits tiirettghont the separate views,tegethet" with the (ietztiíeti ciesetiptititi beievtf, :ite ineotpntateti in and tfotmpart of the staeeiiietttion, anti serve to futthet' iiitttsttate etttibedititents ofceneepts that inehttíe the eietittieti intfetitititt, and explain vatiotts ptineipies anti atiftfatntages efthese eintsoditttents.

[GOIZÅ-i Fitfi. 109 a tfiexv ef the battery' stntetttte. , 209 is an inside Vietv ofthe intfetitiøti. sitotvs att extaiotieti tfiew' titt" the itn/etttiott. [ÄGÜQTE HG. 4% is a, tfietv ofthe center. . 509 a viextf ef the iteitiet. [99291 FÉG. 605) is a, viettf ot' the outer hoxt , 706 is a tfiettf ot the top and hottortt part, . 809 is et *vievw etniiptete et: systemt EGOÉÉI] Shihed attisens ttfiïi ztppreciete that eteiiiertts ih the tigures ereittitstretett for siiiiplieity' and eízttity' aiid have iiot iteeessarity heeii di*atvii toseztie. For example, the àittiertsiohs ot sortie of the eiemertts in the tigufesrnzty tue exaggeretett rehttitøe to other eíernents to ttetp to itnpirotfe trhtterstartdirtg ot" emhotíitnertts of the present intfehtioii.

"Ptie appztratus :thai rnettitid eotttpttrierits hette heen retaresetitett tft/hereappropriate hy eoriverttiortet syfmhots in the dravvirtgs, stiotflfing ohty thosestäeeitie (ieteiis tittat :tre pertittent to tthdertetatttíitig the eitihottihtertts of thepresent intfetitioti so as not to ohscure the chsctostire ttfittt detaits that vvih herezttíiigv' :tpparetit to those of ordirtztry' skitit in tiie art hat/ing the heriefit ofttie description tiereih.

DETAILED DESCRIPTION Detailed descriptions of the preferred embodiment are providedherein. It is to be understood, however, that the present invention may beembodied in various forms. Therefore, specific details disclosed herein arenot to be interpreted as limiting, but rather as a basis for the claims and as arepresentative basis for teaching one skilled in the art to employ the present invention in virtually any appropriately detailed system, structure or manner. [ÄGÜ35] The terminology used herein is for the purpose of describingparticular embodiments only and is not intended to be limiting of theinvention. As used herein, the term "and/or" includes any and allcombinations of one or more of the associated listed items. As used herein,the singular forms "a," "an," and "the" are intended to include the pluralforms as well as the singular forms, unless the context clearly indicatesotherwise. It will be further understood that the terms "comprises" and/or"comprising," when used in this specification, specify the presence of statedfeatures, steps, operations, elements, and/or components, but do not precludethe presence or addition of one or more other features, steps, operations, elements, components, and/or groups thereof. 36. 36. id="p-36" id="p-36"

[0036] The present invention is directed toward development of ImmersionCoolant which is encapsulated in the Cell/Electronics compartment of themodule securing the fire resistance of the module at all time and securing the Immersion Coolant from contaminations in a tamper proof way. 37. 37. id="p-37" id="p-37"

[0037] In the power supply devices described in these publications, a batteryis disposed in a case filled with a cooling liquid, and the battery is immersedin the cooling liquid for cooling. The power supply device having thisstructure can cool a large number of batteries to a uniform temperature.However, the power supply device having this structure has a drawback thatthe structure is complicated, and the manufacturing cost is high. This isbecause, in order to cool the cooling liquid filling the case, it is taken out andcirculated and forcedly cooled outside the case. In particular, an apparatusthat takes out and circulates the cooling liquid outside the case corrodes andcauses a failure if the cooling liquid leaks. Therefore, it is necessary to circulate in a structure that does not leak the liquid. 38. 38. id="p-38" id="p-38"

[0038] As per preferred embodiment of the invention, the proposedassembly presents a uniquely designed system where the Thermal insulatingModule Container Outer Wall (1) encloses Battery Cell Holder (2), aCylindrical Battery(3), Thermal insulating Module Container Top Lid (4),Thermal insulating Module Container Bottom Lid (5) and Cooling Plate (6).

The battery and electronics compartment as per its further embodiments isfilled with immersion coolant. The cells are immersed for temperature regulation and fire protection. 39. 39. id="p-39" id="p-39"

[0039] The System Coolant liquid regulates the temperature of the coolingplate. The System Coolant is entering and exiting through the nozzles of the cooling plate (The cooling plate can have different sizes and forms.). (6) 40. 40. id="p-40" id="p-40"

[0040] The system provides an exemplary approach with its sophisticatedsystem where the System Coolant enters the cooling plate of the modulewhich can be on the bottom or on the sides. The plate is then regulating thetemperature of the Immersion Coolant. The immersion Coolant is thenregulating the temperature of the cells. The module is a fully encapsulated solution containing cells, electronics, interconnects and immersion coolant. 41. 41. id="p-41" id="p-41"

[0041] The method and system as per its preferred embodiments poses muchsafer environment where cells are always immerged in Immersion Coolanteven if the system cooling circuit is broken in for example a car accident.This allows the cell to be protected from unintended absence of coolant.Furthermore, the Immersion Coolant is also Fire resistant keeping the cellssafe within the strong structure of the module. The System Coolant isindependent from the Immersion Coolant, so the user can use their own existing system. [0042l While a specific embodiment has been shown and described, manyvariations are possible. With time, additional features may be employed. Theparticular shape or configuration of the platform or the interior configuration may be changed to suit the system or equipment with which it is used.

Having described the invention in detail, those skilled in the art willappreciate that modifications may be made to the invention withoutdeparting from its spirit. Therefore, it is not intended that the scope of theinvention be limited to the specific embodiment illustrated and described.Rather, it is intended that the scope of this invention be determined by the appended claims and their equivalents.

The Abstract of the Disclosure is provided to allow the reader toquickly ascertain the nature of the technical disclosure. It is submitted withthe understanding that it will not be used to interpret or limit the scope ormeaning of the claims. In addition, in the foregoing Detailed Description, itcan be seen that various features are grouped together in variousembodiments for the purpose of streamlining the disclosure. This method ofdisclosure is not to be interpreted as reflecting an intention that the claimedembodiments require more features than are expressly recited in each claim.Rather, as the following claims reflect, inventive subject matter lies in lessthan all features of a single disclosed embodiment. Thus, the followingclaims are hereby incorporated into the Detailed Description, with each claim standing on its own as a separately claimed subject matter.

Claims (1)

1. Claim i: A system immersion Coolant which is encapsulated in theCell/Electronics compartment of the module securing the fire resistance of the module at all time and securing the immersion Coolant comprising - Thermal insulating Module Container Outer Wall (1); - Battery Cell Holder (2); - Cylindrical Battery (3), - Thermal insulating Module Container Top Lid (4); - Thermal insulating Module Container Bottom Lid (5) and - Cooling Plate (6). Claim ll: An immersion cooled battery module holder 'where the lmmersion Coolant is eooled by a Cooling plate and the imrnersion Coolant remains in the module container.The lmmersion Coolant remains in the module even if the System Cooling circuit is broken,