WO2013037742A1 - Rechargeable battery - Google Patents

Rechargeable battery Download PDF

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Publication number
WO2013037742A1
WO2013037742A1 PCT/EP2012/067684 EP2012067684W WO2013037742A1 WO 2013037742 A1 WO2013037742 A1 WO 2013037742A1 EP 2012067684 W EP2012067684 W EP 2012067684W WO 2013037742 A1 WO2013037742 A1 WO 2013037742A1
Authority
WO
WIPO (PCT)
Prior art keywords
cooling channel
cooling
carrier
battery according
battery
Prior art date
Application number
PCT/EP2012/067684
Other languages
German (de)
French (fr)
Inventor
Harald Stuetz
Edward Yankoski
Mauro AIOLFI
Michael KÖRÖSI
Original Assignee
Avl List Gmbh
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 Avl List Gmbh filed Critical Avl List Gmbh
Publication of WO2013037742A1 publication Critical patent/WO2013037742A1/en

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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
    • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
    • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
    • H01M50/227—Organic material
    • 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
    • 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
    • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
    • H01M10/647—Prismatic or flat cells, e.g. pouch cells
    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6554—Rods or plates
    • H01M10/6555—Rods or plates arranged between the cells
    • 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
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
    • H01M10/6557—Solid parts with flow channel passages or pipes for heat exchange arranged between the cells
    • 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
    • H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
    • H01M10/6567—Liquids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/262—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with fastening means, e.g. locks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • 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

Definitions

  • the invention relates to a rechargeable battery having at least one battery module with at least one stack of preferably juxtaposed battery cells, having a at least one cooling channel having liquid cooling system, which is in thermal contact with at least one battery cell, wherein at least between two adjacent battery cells, a cooling channel carrier with at least one cooling channel is arranged and each cooling channel carrier consists of at least two closely connected parts, wherein in at least a first part of the cooling channel is formed.
  • EP 1 271 085 A2 describes a device for cooling a vehicle device, in particular a battery, wherein at least one coolant element through which cooling medium can flow is arranged between the battery cells.
  • the US 2009/032059 AI discloses a battery module with a plurality of arranged between individual battery cells plate-shaped heat exchangers, which are flowed through by a coolant in meandering coolant channels, wherein the coolant inlet and outlet of adjacent cooling elements are connected to each other via collecting channels.
  • the plate-shaped heat exchangers consist of two parts.
  • a second part of the cooling channel carrier is formed by a film.
  • the thickness of the film is chosen to be so thin, depending on the film material used, that there is good heat conduction to the adjacent battery cell.
  • the film is sealingly on the first part, wherein preferably the film is formed electrically insulating.
  • the cooling channel may be formed in a meandering manner in the cooling channel carrier between an inlet and an outlet.
  • the inlet and outlet of each cooling channel carrier is fluidly connected to an inlet collection channel and an outlet collection channel, respectively, which extend transversely to the plane of the cooling channel carrier over the entire length of the battery module.
  • the cooling channels of at least two cooling channel carriers are fluidly connected to each other through the inlet collecting channel and the outlet collecting channel.
  • a particularly effective cooling is achieved if the cooling channel of at least one cooling channel carrier has a plurality of trains arranged substantially parallel to each other, wherein the distance between at least two adjacent trains in the region of an upper half of the cooling channel carrier is less than in the region of a lower half of the cooling channel carrier.
  • each cooling channel carrier consist of at least two parts which are firmly connected to one another, wherein the cooling channel is formed in at least a first part.
  • the cooling channel can also be formed in both parts.
  • At least one cooling channel carrier can be formed by a cooling plate arranged between two battery cells.
  • the cooling channel carrier can be made of metal, for example stamped aluminum sheet, preferably at least a portion of the cooling channel carrier may consist of sheet metal, and wherein in at least a portion of the cooling channel carrier, preferably in both parts, a cooling channel may be formed by a Blechumformvorgang.
  • the cooling channel carrier made of plastic, preferably of plastic injection, consists, wherein preferably the cooling channel is formed in the plastic.
  • the thin, electrically insulating film may, for example, be applied by laser welding to the cell carriers, which separates the cooling medium from the cell housing. As a result, further sealing devices, such as sealing lips, can be dispensed with.
  • the two parts of the cooling channel carrier can be tightly connected by gluing, soldering or welding, preferably laser welding.
  • the inlet collecting channel and / or the outlet collecting channel is formed by at least two pipe parts which can be plugged into one another, wherein preferably each pipe part is preferably fixedly connected to a cooling channel carrier.
  • the battery cells and the cooling channel carrier are inserted into a cell carrier housing, wherein preferably the cell carrier housing consists of an upper part and a lower part.
  • a quick and effective assembly can be achieved if the upper and lower cell carrier housing and the cooling channel carrier are positively and non-positively connected to each other, wherein between two cooling channel carriers in each case at least one, preferably two battery cells are arranged.
  • the cell carrier which serves as a structural element for the battery module, thus also includes parts of the cooling system.
  • the cooling channels are formed by depressions in the cooling channel carrier and are arranged directly on the side walls of the battery cells.
  • cooling channel carrier has cooling channels on both sides of a main plane of the cooling channel carrier, wherein at least one connecting opening for the flow connection of the two cooling channels is preferably arranged in the carrier wall.
  • FIG. 1 shows an inventive battery module in a first embodiment in an oblique view.
  • FIG. 2 shows the battery module in a section along the line II-II in FIG. 1;
  • 4 shows the cooling channel carrier in a further oblique view
  • 5 shows the cooling channel carrier in a front view
  • Fig. 6 shows the cooling channel carrier in a section along the line VI - VI in
  • FIG. 7 shows a battery module according to the invention in a second embodiment in an oblique view.
  • Fig. 8 shows this battery module in a section along the line VIII-VIII in
  • FIG. 10 shows the battery module in a section according to the line X-X in FIG. 8;
  • FIG. 11 shows the battery module in a section analogous to FIG. 8 with the cooling channel carrier removed;
  • FIG. 12 shows a fastening device for two adjacent battery modules in a section in the battery cell plane
  • FIGS. 1 to FIG. 6 show a battery module 1 of a rechargeable battery for an electrically operated vehicle, the battery module 1 having a stack 1a of battery cells 2 arranged next to one another, which are arranged in a housing 3. Between each two adjacent battery cells 2, a cooling channel carrier 4 is arranged with molded cooling channels 5, wherein each cooling channel 5 meandering extends between an inlet 6 and an outlet 7 in the cooling channel carrier 4 and a plurality of trains 5a. The distance of the trains 5a is greater in a lower region 4 'of the cooling channel carrier 4 than in an upper region 4 ".
  • the battery module 1 may optionally also have a plurality of juxtaposed batches la of battery cells 2.
  • the battery cells 2 are arranged in a frame-shaped cell carrier 8
  • the cooling medium carrier 4 consists of a first part 4a with molded-in cooling channels 5 on both sides of a in a main plane ⁇ arranged carrier wall 16, and a second part 4b, which is formed by a film 9.
  • the open channels formed in the first part 4a cooling channels 5 are covered by the electrically insulating film 9, wherein the film 9, for example, by laser welding to the first part 4a the cooling channel carrier 4 fixed and d is connected.
  • the film 9 separates the Cooling medium from the battery cells 2. This can be dispensed with further sealing medium.
  • the welding areas are designated by reference numeral 10.
  • In the cooling channel carrier 4 connecting openings 11 are provided on each side to allow a coolant transfer.
  • the cooling channels 5 are formed on both sides of the cooling channel carrier 4 and covered on both sides by a respective film 9.
  • the stack 1a of cell carriers 8 with battery cells 2 is held together by a clamping band 15.
  • each cooling channel 5 communicates with an inlet collecting channel 12, the outlet 7 with an outlet collecting channel 13 in connection.
  • Entry and exit collection channels 12, 13 are formed in the cell carriers 8 transversely to the main plane ⁇ of the cooling channel carrier 4.
  • the inlet and outlet collecting channels 12, 13 can be arranged in the region of a median plane between the two stacks la of the battery module 1 and interconnect the cooling channels 5 of all the cooling channel carriers 4.
  • the thin film 9 has the advantage that virtually no additional space requirement is required and that nevertheless the battery cell case 3 is separated from the coolant (especially electrically). With the arrangement described can be found with a minimum number of components Aus Siemens. The number of battery cells 2 within a battery module 1 can be easily adapted to the respective requirements.
  • a standard vehicle coolant for example glycol / water
  • the laser-welded blockages 10 a, 10 b, 10 c of the welding regions 10 prevent bypass flows of the coolant within the flow volume of a cooling channel carrier 4.
  • the film 9 may consist of a thermally conductive, but electrically insulating plastic. As an alternative to laser welding, the film 9 can also be applied by means of heating element welding or radiation welding.
  • the weld also has the advantage that the tolerances of the cell sidewalls can be more inaccurate without causing coolant leakage.
  • the cell carriers 8 can be embodied as identical parts, whereby the number of cells within a battery module 1 can be easily scaled. Through the connection opening 11 between arranged on different sides of the cooling channel carrier 4 cooling channels 5, the wall thickness can be reduced.
  • the outer sides of the frames 8a of the cell carriers 8 form the thermally insulating outer wall of the battery module 1.
  • FIGS. 7 to 13 show a second embodiment of a battery module 101 designed according to the invention with a housing 103 in which at least one stack 101 a of battery cells 102 are arranged.
  • the battery cells 102 are inserted into a cell carrier housing 108, which cell carrier housing 108 has a lower housing part 103a.
  • the stack 101a is closed at the top by an upper housing part 103b and a housing cover 116.
  • the battery cells 102 may each be arranged in pairs in the stack 101a. Between two battery cells 102 and between adjacent pairs of battery cells 102, a cooling channel carrier 104 is arranged in each case, which cooling channel carrier 104 is formed by a cooling plate 109 in the present embodiment.
  • the cooling plate 109 is formed in two parts and has a first part 104a and a second part 104b, wherein the two parts 104a, 104b made of metal, in particular aluminum sheet, in which cooling channels 105 are formed.
  • the cooling channels 105 have a meander-like shape, wherein the trains 105a in the lower region 104 'of the cooling plate 109 are spaced from each other further than in the upper portion 104 "of the cooling plate 109.
  • the cooling channels 105 extend within the cooling plate 109 between an inlet 106 and An outlet 107.
  • the cooling channels 105 can be formed by molding, casting, deep-drawing or the like in at least one of the two parts 104a, 104b of the cooling plate 109 and manufactured cheaply .
  • the two parts 104a, 104b can be welded, glued or soldered together.
  • Transverse to the cooling plates 109 extend in the region of the median plane ß inlet and outlet collection channels 112, 113, which are flow-connected to the inlets 106 and the outlets 107 of the cooling channels 105.
  • the inlet and outlet collecting channels 112, 113 are each formed by plug-in tube segments 112a, 113a on both sides of the main plane ⁇ , which are arranged transversely to the cooling plate 109 and firmly connected thereto. By plugging together the tube segments 112a, 113a of all the cooling plates 109, the battery module 101 thus forms transversely penetrating inlet and outlet collection channels 112, 113.
  • cooling plates 109 are respectively disposed between the outer battery cells 102 and the side pressure plates 117.
  • inlet ports 112b and outlet ports 113b formed by end-side tube segments 112a, 113a are arranged.
  • a sealing element 121 can be arranged in each case.
  • the coolant flows from the inlet port 112b coming through the inlet collecting channel 112 and passes via inlets 106 of the cooling plates 109 in the cooling channels 105. After flowing through the cooling channels 105 between the battery cells 102, the coolant exits through outlets 107 from the cooling channels 105 and is via outlet collection channels 113 returned to the cooling circuit.
  • the lower housing part 103 a and the upper housing part 103 b, and the cooling plates 109 are held by clamping screws 118 and compressed by the side clamping cover 117.
  • the lower housing part 103a and the upper housing part are positively connected to the cooling plates 109 via the clamping screws 118.
  • at least one tension band can be used analogously to FIG. 1.
  • Lower and upper housing parts 103a, 103b, as well as the outer edges 109a of the cooling plates 109 form the lateral outer surface of the battery module 101.
  • two battery modules 101 can be fastened together to a substrate via fastening screws 119 and hold-down 120.
  • the coolant can be used both for cooling and for heating the battery module 1, 101.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Secondary Cells (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The invention relates to a rechargeable battery, comprising at least one battery module (1, 101) having at least one stack (1a; 101a) of battery cells (2, 102) preferably arranged next to one another, a liquid cooling system having at least one cooling channel (5, 105) that is in thermal contact with at least one battery cell (2, 102), wherein a cooling-channel carrier (4, 104) having at least one cooling channel (5, 105) is arranged at least between two adjacent battery cells (2, 102) and each cooling-channel carrier (4, 104) comprises at least two parts (4a, 4b; 104a; 104b) that are tightly connected to each other, wherein the cooling channel (5, 105) is formed into at least a first part (4a, 104a). In order to enable reliable cooling of the battery module in a manner that is as simple to produce as possible, according to the invention a second part (4b) of the cooling-channel carrier (4) is formed by a film (9).

Description

Wiederaufladbare Batterie  Rechargeable battery
Die Erfindung betrifft eine wiederaufladbare Batterie mit zumindest einem Batteriemodul mit zumindest einem Stapel von vorzugsweise nebeneinander angeordneten Batteriezellen, mit einem zumindest einen Kühlkanal aufweisenden Flüssigkeitskühlsystem, welcher mit zumindest einer Batteriezelle in thermischen Kontakt steht, wobei zumindest zwischen zwei benachbarten Batteriezellen ein Kühlkanalträger mit zumindest einem Kühlkanal angeordnet ist und jeder Kühlkanalträger aus zumindest zwei miteinander dicht verbundenen Teilen besteht, wobei in zumindest einen ersten Teil der Kühlkanal eingeformt ist. The invention relates to a rechargeable battery having at least one battery module with at least one stack of preferably juxtaposed battery cells, having a at least one cooling channel having liquid cooling system, which is in thermal contact with at least one battery cell, wherein at least between two adjacent battery cells, a cooling channel carrier with at least one cooling channel is arranged and each cooling channel carrier consists of at least two closely connected parts, wherein in at least a first part of the cooling channel is formed.
Die DE 10 2008 061 755 AI beschreibt eine Halte- und Kühlungsvorrichtung für zumindest eine Energiespeichereinheit, wobei die Halte- und Kühlungsvorrichtung eine Mehrzahl von daran stoffschlüssig befestigten Kühlblechen aufweist. Die stoffschlüssige Verbindung ist dabei durch Verlöten oder Verschweißen der Kühlungsgrundplatte mit den Kühlblechen hergestellt, so dass eine metallische Verbindung zwischen der Kühlungsgrundplatte und den Kühlblechen ausgebildet ist. Zur Kühlung der Kühlungsgrundplatte sind angelötete oder innenliegende Kühlrohre vorgesehen. Problematisch ist dabei die zuverlässige thermische An- bindung der Wärmeableitbleche an die Kühlplatte. DE 10 2008 061 755 AI describes a holding and cooling device for at least one energy storage unit, wherein the holding and cooling device has a plurality of materially secured thereto cooling plates. The cohesive connection is made by soldering or welding the cooling base plate to the cooling plates, so that a metallic connection between the cooling base plate and the cooling plates is formed. To cool the cooling base plate soldered or internal cooling tubes are provided. The problem here is the reliable thermal connection of the heat dissipation plates to the cooling plate.
Die EP 1 271 085 A2 beschreibt eine Vorrichtung zum Kühlen einer Fahrzeugeinrichtung, insbesondere einer Batterie, wobei zumindest ein mit Kühlmittel durchströmbares Kühlelement zwischen den Batteriezellen angeordnet ist. EP 1 271 085 A2 describes a device for cooling a vehicle device, in particular a battery, wherein at least one coolant element through which cooling medium can flow is arranged between the battery cells.
Die US 2009/032059 AI offenbart ein Batteriemodul mit mehreren zwischen einzelnen Batteriezellen angeordneten plattenförmigen Wärmetauschern, die von einem Kühlmittel in mäanderförmig angeordneten Kühlmittelkanälen durchströmt werden, wobei die Kühlmittelein- und auslässe benachbarter Kühlelemente über Sammelkanäle miteinander verbunden sind. Die plattenförmigen Wärmetauschern bestehen aus zwei Teilen . The US 2009/032059 AI discloses a battery module with a plurality of arranged between individual battery cells plate-shaped heat exchangers, which are flowed through by a coolant in meandering coolant channels, wherein the coolant inlet and outlet of adjacent cooling elements are connected to each other via collecting channels. The plate-shaped heat exchangers consist of two parts.
Aus der US 6,296,968 Bl ist eine in einem Kunststoffbehälter angeordnete Batterie bekannt, wobei der Behälter aus mehreren Kammern aufgebaut ist und jeweils mehrere Elektroden in einer Kammer angeordnet sind . An den Außenseiten der Kammern sind durch flanschartige Kühlkanäle gebildete Kühlelemente angebracht, die beim Zusammenbau der Kammern abgedichtet und verschweißt werden. Die Kühlkanäle werden von einem Kühlmittel durchströmt, wobei das Kühlmittel über Sammelkanäle zu- und abgeführt wird . Aufgabe der Erfindung ist es, eine bestmögliche thermische Konditionierung der Batteriezellen zu ermöglichen. From US 6,296,968 Bl arranged in a plastic container battery is known, wherein the container is constructed of a plurality of chambers and in each case a plurality of electrodes are arranged in a chamber. On the outer sides of the chambers formed by flange-like cooling channels cooling elements are mounted, which are sealed and welded during assembly of the chambers. The cooling channels are flowed through by a coolant, wherein the coolant is supplied and discharged via collecting channels. The object of the invention is to enable the best possible thermal conditioning of the battery cells.
Erfindungsgemäß wird dies dadurch erreicht, dass ein zweiter Teil des Kühlkanalträgers durch eine Folie gebildet ist. According to the invention this is achieved in that a second part of the cooling channel carrier is formed by a film.
Um eine gute Kühlung zu erreichen, wird die Dicke der Folie - in Abhängigkeit des eingesetzten Folienmaterials - so dünn gewählt, dass eine gute Wärmeleitung zur angrenzenden Batteriezelle besteht. Die Folie liegt dabei dichtend auf dem ersten Teil auf, wobei vorzugsweise die Folie elektrisch isolierend ausgebildet ist. In order to achieve good cooling, the thickness of the film is chosen to be so thin, depending on the film material used, that there is good heat conduction to the adjacent battery cell. The film is sealingly on the first part, wherein preferably the film is formed electrically insulating.
Der Kühlkanal kann mäanderartig in den Kühlkanalträger zwischen einem Eintritt und einem Austritt eingeformt sein. Der Einlass und Auslass jedes Kühlkanalträgers ist mit einem Einlasssammelkanal bzw. einem Auslasssammelkanal strö- mungsverbunden, welcher sich quer zur Ebene des Kühlkanalträgers über die gesamte Länge des Batteriemoduls erstreckt. Die Kühlkanäle von zumindest zwei Kühlkanalträgern sind durch den Einlasssammelkanal und den Auslasssammelkanal miteinander strömungsverbunden. The cooling channel may be formed in a meandering manner in the cooling channel carrier between an inlet and an outlet. The inlet and outlet of each cooling channel carrier is fluidly connected to an inlet collection channel and an outlet collection channel, respectively, which extend transversely to the plane of the cooling channel carrier over the entire length of the battery module. The cooling channels of at least two cooling channel carriers are fluidly connected to each other through the inlet collecting channel and the outlet collecting channel.
Eine besonders effektive Kühlung wird erreicht, wenn der Kühlkanal zumindest eines Kühlkanalträgers mehrere im Wesentlichen parallel zueinander angeordnete Züge aufweist, wobei der Abstand zumindest zweier benachbarter Züge im Bereich einer oberen Hälfte des Kühlkanalträgers geringer ist als im Bereich einer unteren Hälfte des Kühlkanalträgers. A particularly effective cooling is achieved if the cooling channel of at least one cooling channel carrier has a plurality of trains arranged substantially parallel to each other, wherein the distance between at least two adjacent trains in the region of an upper half of the cooling channel carrier is less than in the region of a lower half of the cooling channel carrier.
Um eine einfache Fertigung zu ermöglichen, ist es vorteilhaft, jeder Kühlkanalträger aus zumindest zwei miteinander fest verbundenen Teilen besteht, wobei in zumindest einen ersten Teil der Kühlkanal eingeformt ist. Der Kühlkanal kann aber auch in beiden Teilen eingeformt sein. In order to enable simple production, it is advantageous for each cooling channel carrier to consist of at least two parts which are firmly connected to one another, wherein the cooling channel is formed in at least a first part. The cooling channel can also be formed in both parts.
Zumindest ein Kühlkanalträger kann durch eine zwischen zwei Batteriezellen angeordnete Kühlplatte gebildet sein. Der Kühlkanalträger kann dabei aus Metall, beispielsweise aus gestanztem Aluminiumblech bestehen, wobei vorzugsweise zumindest ein Teil des Kühlkanalträgers aus Blech bestehen kann, und wobei in zumindest einen Teil des Kühlkanalträgers, vorzugsweise in beide Teile, ein Kühlkanal durch einen Blechumformvorgang eingeformt sein kann. At least one cooling channel carrier can be formed by a cooling plate arranged between two battery cells. The cooling channel carrier can be made of metal, for example stamped aluminum sheet, preferably at least a portion of the cooling channel carrier may consist of sheet metal, and wherein in at least a portion of the cooling channel carrier, preferably in both parts, a cooling channel may be formed by a Blechumformvorgang.
Alternativ dazu ist es auch möglich, dass zumindest ein Teil des Kühlkanalträgers aus Kunststoff, vorzugsweise aus Kunststoff-Spritzguss, besteht, wobei vorzugsweise der Kühlkanal in den Kunststoff eingeformt ist. Die dünne, elektrisch isolierende Folie kann zum Beispiel durch Laserschweißen auf die Zellträger aufgetragen sein, welche das Kühlmedium vom Zellgehäuse trennt. Dadurch können weitere Abdichteinrichtungen, wie zum Beispiel Dichtlippen, entfallen. Alternatively, it is also possible that at least a part of the cooling channel carrier made of plastic, preferably of plastic injection, consists, wherein preferably the cooling channel is formed in the plastic. The thin, electrically insulating film may, for example, be applied by laser welding to the cell carriers, which separates the cooling medium from the cell housing. As a result, further sealing devices, such as sealing lips, can be dispensed with.
Die beiden Teile des Kühlkanalträgers können durch Kleben, Löten oder Schweißen, vorzugsweise Laserschweißen, dicht verbunden sein. The two parts of the cooling channel carrier can be tightly connected by gluing, soldering or welding, preferably laser welding.
In weiterer Ausführung der Erfindung kann vorgesehen sein, dass der Einlass- sammelkanal und/oder der Auslasssammelkanal durch jeweils zumindest zwei ineinander steckbare Rohrteile gebildet ist, wobei vorzugsweise jeder Rohrteil mit einem Kühlkanalträger vorzugsweise fest verbunden ist. In a further embodiment of the invention it can be provided that the inlet collecting channel and / or the outlet collecting channel is formed by at least two pipe parts which can be plugged into one another, wherein preferably each pipe part is preferably fixedly connected to a cooling channel carrier.
Vorzugsweise ist vorgesehen, dass die Batteriezellen und die Kühlkanalträger in ein Zellträgergehäuse eingesetzt sind, wobei vorzugsweise das Zellträgergehäuse aus einem Oberteil und einem Unterteil besteht. It is preferably provided that the battery cells and the cooling channel carrier are inserted into a cell carrier housing, wherein preferably the cell carrier housing consists of an upper part and a lower part.
Ein rascher und effektiver Zusammenbau lässt sich erreichen, wenn das obere und das untere Zellträgergehäuse und die Kühlkanalträger formschlüssig und kraftschlüssig miteinander verbunden sind, wobei zwischen zwei Kühlkanalträgern jeweils zumindest eine, vorzugsweise zwei Batteriezellen angeordnet sind . A quick and effective assembly can be achieved if the upper and lower cell carrier housing and the cooling channel carrier are positively and non-positively connected to each other, wherein between two cooling channel carriers in each case at least one, preferably two battery cells are arranged.
Der Zellträger, welcher als Strukturelement für das Batteriemodul dient, beinhaltet somit auch Teile des Kühlsystems. Die Kühlkanäle sind durch Vertiefungen im Kühlkanalträger gebildet und sind direkt an den Seitenwänden der Batteriezellen angeordnet. The cell carrier, which serves as a structural element for the battery module, thus also includes parts of the cooling system. The cooling channels are formed by depressions in the cooling channel carrier and are arranged directly on the side walls of the battery cells.
Eine besonders gute Konditionierung der Batteriezellen ergibt sich, wenn der Kühlkanalträger beidseits einer Hauptebene des Kühlkanalträgers Kühlkanäle aufweist, wobei vorzugsweise in der Trägerwand zumindest eine Verbindungsöffnung zur Strömungsverbindung der beiden Kühlkanäle angeordnet ist. A particularly good conditioning of the battery cells is obtained when the cooling channel carrier has cooling channels on both sides of a main plane of the cooling channel carrier, wherein at least one connecting opening for the flow connection of the two cooling channels is preferably arranged in the carrier wall.
Die Erfindung wird im Folgenden anhand der Figuren näher erläutert. Es zeigen : The invention will be explained in more detail below with reference to FIGS. Show it :
Fig. 1 ein erfindungsgemäßes Batteriemodul in einer ersten Ausführungsvariante in einer Schrägansicht; 1 shows an inventive battery module in a first embodiment in an oblique view.
Fig. 2 das Batteriemodul in einem Schnitt gemäß der Linie II-II in Fig . 1; 2 shows the battery module in a section along the line II-II in FIG. 1;
Fig. 3 einen Kühlkanalträger dieses Batteriemoduls in einer Schrägansicht; 3 shows a cooling channel carrier of this battery module in an oblique view;
Fig. 4 den Kühlkanalträger in einer weiteren Schrägansicht; Fig. 5 den Kühlkanalträger in einer Vorderansicht; 4 shows the cooling channel carrier in a further oblique view; 5 shows the cooling channel carrier in a front view;
Fig. 6 den Kühlkanalträger in einem Schnitt gemäß der Linie VI - VI in Fig. 6 shows the cooling channel carrier in a section along the line VI - VI in
Fig . 5;  Fig. 5;
Fig. 7 einen erfindungsgemäßen Batteriemodul in einer zweiten Ausführungsvariante in einer Schrägansicht; 7 shows a battery module according to the invention in a second embodiment in an oblique view.
Fig. 8 diesen Batteriemodul in einem Schnitt gemäß der Linie VIII-VIII in Fig. 8 shows this battery module in a section along the line VIII-VIII in
Fig . 7;  Fig. 7;
Fig. 9 einen Kühlkanalträger dieses Batteriemoduls in einer Schrägansicht; 9 shows a cooling channel carrier of this battery module in an oblique view;
Fig. 10 den Batteriemodul in einem Schnitt gemäß der Linie X-X in Fig. 8; FIG. 10 shows the battery module in a section according to the line X-X in FIG. 8; FIG.
Fig. 11 den Batteriemodul in einem Schnitt analog zu Fig. 8 mit entferntem Kühlkanalträger; 11 shows the battery module in a section analogous to FIG. 8 with the cooling channel carrier removed;
Fig. 12 eine Befestigungseinrichtung für zwei benachbarte Batteriemodule in einem Schnitt in der Batteriezellenebene; und FIG. 12 shows a fastening device for two adjacent battery modules in a section in the battery cell plane; FIG. and
Fig. 13 diese Befestigungseinrichtung in einer Schrägansicht. Fig. 13, this fastening device in an oblique view.
Die Fig. 1 bis Fig . 6 zeigen einen Batteriemodul 1 einer wiederaufladbaren Batterie für ein elektrische betriebenes Fahrzeug, wobei das Batteriemodul 1 einen Stapel la von nebeneinander angeordneten Batteriezellen 2 aufweist, welche in einem Gehäuse 3 angeordnet sind. Zwischen zwei benachbarten Batteriezellen 2 ist jeweils ein Kühlkanalträger 4 mit eingeformten Kühlkanälen 5 angeordnet, wobei sich jeder Kühlkanal 5 zwischen einem Eintritt 6 und einem Austritt 7 im Kühlkanalträger 4 mäanderartig erstreckt und mehrere Züge 5a, aufweist. Der Abstand der Züge 5a ist in einem unteren Bereich 4' des Kühlkanalträgers 4 größer als in einem oberen Bereich 4". Das Batteriemodul 1 kann gegebenenfalls auch mehrere nebeneinander angeordneten Stapel la von Batteriezellen 2 aufweisen. Die Batteriezellen 2 sind in einem rahmenförmigen Zellträger 8 zur Aufnahme von einer oder zwei Batteriezellen 2 angeordnet, wobei der aus Kunststoff bestehende, beispielsweise als Kunststoffspritzgussteil ausgeführte Zellträger 8 in diesem Beispiel auch den Kühlkanalträger 4 ausbildet. Der Kühlkanalträger 4 besteht dabei aus einem ersten Teil 4a mit eingeformten Kühlkanälen 5 beidseits einer in einer Hauptebene ε angeordneten Trägerwand 16, und einem zweiten Teil 4b, welcher durch eine Folie 9 gebildet ist. Die offen in den ersten Teil 4a eingeformten Kühlkanäle 5 werden durch die elektrisch isolierende Folie 9 abgedeckt, wobei die Folie 9 zum Beispiel durch Laserschweißen mit dem ersten Teil 4a des Kühlkanalträger 4 fest und dichtend verbunden ist. Die Folie 9 trennt das Kühlmedium von den Batteriezellen 2. Dadurch kann auf weitere Abdichtungs- mittel verzichtet werden. Die Schweißbereiche sind mit Bezugszeichen 10 bezeichnet. Im Kühlkanalträger 4 sind auf jeder Seite Verbindungsöffnungen 11 vorgesehen, um einen Kühlmittelübertritt zu ermöglichen. Die Kühlkanäle 5 sind an beiden Seiten des Kühlkanalträgers 4 eingeformt und an beiden Seiten durch jeweils eine Folie 9 abgedeckt. FIGS. 1 to FIG. 6 show a battery module 1 of a rechargeable battery for an electrically operated vehicle, the battery module 1 having a stack 1a of battery cells 2 arranged next to one another, which are arranged in a housing 3. Between each two adjacent battery cells 2, a cooling channel carrier 4 is arranged with molded cooling channels 5, wherein each cooling channel 5 meandering extends between an inlet 6 and an outlet 7 in the cooling channel carrier 4 and a plurality of trains 5a. The distance of the trains 5a is greater in a lower region 4 'of the cooling channel carrier 4 than in an upper region 4 ". The battery module 1 may optionally also have a plurality of juxtaposed batches la of battery cells 2. The battery cells 2 are arranged in a frame-shaped cell carrier 8 In this example, the cooling medium carrier 4 consists of a first part 4a with molded-in cooling channels 5 on both sides of a in a main plane ε arranged carrier wall 16, and a second part 4b, which is formed by a film 9. The open channels formed in the first part 4a cooling channels 5 are covered by the electrically insulating film 9, wherein the film 9, for example, by laser welding to the first part 4a the cooling channel carrier 4 fixed and d is connected. The film 9 separates the Cooling medium from the battery cells 2. This can be dispensed with further sealing medium. The welding areas are designated by reference numeral 10. In the cooling channel carrier 4 connecting openings 11 are provided on each side to allow a coolant transfer. The cooling channels 5 are formed on both sides of the cooling channel carrier 4 and covered on both sides by a respective film 9.
Der Stapel la an Zellträgern 8 mit Batteriezellen 2 wird durch ein Spannband 15 zusammengehalten. The stack 1a of cell carriers 8 with battery cells 2 is held together by a clamping band 15.
Der Eintritt 6 jedes Kühlkanals 5 steht mit einem Einlasssammelkanal 12, der Austritt 7 mit einem Austrittssammelkanal 13 in Verbindung . Eintritts- und Aus- trittssammelkanäle 12, 13 sind in die Zellträger 8 quer zur Hauptebene ε des Kühlkanalträgers 4 eingeformt. Bei mehreren nebeneinander angeordneten Stapeln la können die Eintritts- und Austrittssammelkanäle 12, 13 im Bereich einer Mittelebene zwischen den beiden Stapeln la des Batteriemoduls 1 angeordnet sein und die Kühlkanäle 5 aller Kühlkanalträger 4 miteinander verbinden. The inlet 6 of each cooling channel 5 communicates with an inlet collecting channel 12, the outlet 7 with an outlet collecting channel 13 in connection. Entry and exit collection channels 12, 13 are formed in the cell carriers 8 transversely to the main plane ε of the cooling channel carrier 4. In the case of a plurality of juxtaposed stacks 1a, the inlet and outlet collecting channels 12, 13 can be arranged in the region of a median plane between the two stacks la of the battery module 1 and interconnect the cooling channels 5 of all the cooling channel carriers 4.
Die dünne Folie 9 hat den Vorteilt, dass praktisch kein zusätzlicher Bauraumbedarf erforderlich ist und dass trotzdem das Batteriezellgehäuse 3 vom Kühlmittel (vor allem elektrisch) getrennt ist. Mit der beschriebenen Anordnung kann mit einer minimalen Anzahl an Komponenten das Auslangen gefunden werden. Die Anzahl an Batteriezellen 2 innerhalb eines Batteriemoduls 1 kann in einfacher Weise an die jeweiligen Anforderungen angepasst werden. The thin film 9 has the advantage that virtually no additional space requirement is required and that nevertheless the battery cell case 3 is separated from the coolant (especially electrically). With the arrangement described can be found with a minimum number of components Auslangen. The number of battery cells 2 within a battery module 1 can be easily adapted to the respective requirements.
Da das Zellgehäuse 3 nicht elektrisch spannungsfrei sein muss, kann aufgrund der elektrischen Trennung ein Standard-Fahrzeugkühlmittel (zum Beispiel Gly- kol/Wasser) verwendet werden. Die lasergeschweißten Blockaden 10a, 10b, 10c der Schweißbereiche 10 verhindern Bypass-Strömungen des Kühlmittels innerhalb des Strömungsvolumens eines Kühlkanalträgers 4. Since the cell housing 3 does not have to be electrically voltage-free, a standard vehicle coolant (for example glycol / water) can be used due to the electrical separation. The laser-welded blockages 10 a, 10 b, 10 c of the welding regions 10 prevent bypass flows of the coolant within the flow volume of a cooling channel carrier 4.
Die Folie 9 kann aus einem thermisch leitendem, aber elektrisch isolierendem Kunststoff bestehen. Alternativ zum Laserschweißen kann die Folie 9 auch mittels Heizelementschweißens oder Strahlungsschweißens aufgebracht werden. The film 9 may consist of a thermally conductive, but electrically insulating plastic. As an alternative to laser welding, the film 9 can also be applied by means of heating element welding or radiation welding.
Die Verschweißung hat weiters den Vorteil, dass die Toleranzen der Zellseitenwände ungenauer sein können, ohne Kühlmittelleckagen zu verursachen. The weld also has the advantage that the tolerances of the cell sidewalls can be more inaccurate without causing coolant leakage.
Eine zusätzliche Sicherheit gegenüber Leckagen kann erreicht werden, wenn die äußerste Schweißnaht doppelt gelegt wird . Additional safety against leaks can be achieved if the outermost weld is doubled.
Die Zellträger 8 können als Gleichteile ausgeführt sein, wodurch die Zellanzahl innerhalb eines Batteriemoduls 1 leicht skaliert werden kann. Durch die Verbindungsöffnung 11 zwischen an verschiedenen Seiten des Kühlkanalträgers 4 angeordneten Kühlkanälen 5 kann die Wandstärke reduziert werden. The cell carriers 8 can be embodied as identical parts, whereby the number of cells within a battery module 1 can be easily scaled. Through the connection opening 11 between arranged on different sides of the cooling channel carrier 4 cooling channels 5, the wall thickness can be reduced.
Die Außenseiten der Rahmen 8a der Zellträger 8 bilden die thermisch isolierende Außenwand des Batteriemoduls 1. The outer sides of the frames 8a of the cell carriers 8 form the thermally insulating outer wall of the battery module 1.
Die Fig . 7 bis Fig. 13 zeigen eine zweite Ausführungsform eines erfindungsgemäß gestalteten Batteriemoduls 101 mit einem Gehäuse 103, in welchem zumindest ein Stapel 101a von Batteriezellen 102 angeordnet sind. Die Batteriezellen 102 sind in ein Zellträgergehäuse 108 eingesetzt, welches Zellträgergehäuse 108 einen unteren Gehäuseteil 103a aufweist. Der Stapel 101a wird nach oben durch einen oberen Gehäuseteil 103b, sowie einen Gehäusedeckel 116 abgeschlossen. Die Batteriezellen 102 können jeweils paarweise im Stapel 101a angeordnet sein. Zwischen zwei Batteriezellen 102 bzw. zwischen benachbarten Paaren von Batteriezellen 102 ist jeweils ein Kühlkanalträger 104 angeordnet, welcher Kühlkanalträger 104 im vorliegenden Ausführungsbeispiel durch eine Kühlplatte 109 gebildet ist. Die Kühlplatte 109 ist zweiteilig ausgebildet und weist einen ersten Teil 104a und einen zweiten Teil 104b auf, wobei die beiden Teile 104a, 104b aus Metall, insbesondere aus Aluminiumblech bestehen, in welches Kühlkanäle 105 eingeformt sind. Die Kühlkanäle 105 weisen eine mäanderartige Form auf, wobei die Züge 105a im unteren Bereich 104' der Kühlplatte 109 voneinander weiter beabstandet sind, als im oberen Bereich 104" der Kühlplatte 109. Die Kühlkanäle 105 erstrecken sich innerhalb der Kühlplatte 109 zwischen einem Eintritt 106 und einem Austritt 107. Die Kühlkanäle 105 können durch Stanzen, Gießen, Tiefziehen oder dergleichen in zumindest einen der beiden Teile 104a, 104b der Kühlplatte 109 eingeformt und günstig hergestellt werden. Die beiden Teile 104a, 104b können geschweißt, verklebt oder miteinander verlötet sein. The Fig. FIGS. 7 to 13 show a second embodiment of a battery module 101 designed according to the invention with a housing 103 in which at least one stack 101 a of battery cells 102 are arranged. The battery cells 102 are inserted into a cell carrier housing 108, which cell carrier housing 108 has a lower housing part 103a. The stack 101a is closed at the top by an upper housing part 103b and a housing cover 116. The battery cells 102 may each be arranged in pairs in the stack 101a. Between two battery cells 102 and between adjacent pairs of battery cells 102, a cooling channel carrier 104 is arranged in each case, which cooling channel carrier 104 is formed by a cooling plate 109 in the present embodiment. The cooling plate 109 is formed in two parts and has a first part 104a and a second part 104b, wherein the two parts 104a, 104b made of metal, in particular aluminum sheet, in which cooling channels 105 are formed. The cooling channels 105 have a meander-like shape, wherein the trains 105a in the lower region 104 'of the cooling plate 109 are spaced from each other further than in the upper portion 104 "of the cooling plate 109. The cooling channels 105 extend within the cooling plate 109 between an inlet 106 and An outlet 107. The cooling channels 105 can be formed by molding, casting, deep-drawing or the like in at least one of the two parts 104a, 104b of the cooling plate 109 and manufactured cheaply .The two parts 104a, 104b can be welded, glued or soldered together.
Quer zu den Kühlplatten 109 erstrecken sich im Bereich der Mittelebene ß Eintritts- und Austrittssammelkanäle 112, 113, welche mit den Eintritten 106 bzw. den Austritten 107 der Kühlkanäle 105 strömungsverbunden sind . Die Eintrittsund Austrittssammelkanäle 112, 113 werden jeweils durch ineinander steckbare Rohrsegmente 112a, 113a beidseits der Hauptebene ε gebildet, welche quer zur Kühlplatte 109 angeordnet und fest mit dieser verbunden sind. Durch Zusammenstecken der Rohrsegmente 112a, 113a aller Kühlplatten 109 entstehen somit das Batteriemodul 101 quer durchsetzende Eintritts- und Austrittssammelkanäle 112, 113. Transverse to the cooling plates 109 extend in the region of the median plane ß inlet and outlet collection channels 112, 113, which are flow-connected to the inlets 106 and the outlets 107 of the cooling channels 105. The inlet and outlet collecting channels 112, 113 are each formed by plug-in tube segments 112a, 113a on both sides of the main plane ε, which are arranged transversely to the cooling plate 109 and firmly connected thereto. By plugging together the tube segments 112a, 113a of all the cooling plates 109, the battery module 101 thus forms transversely penetrating inlet and outlet collection channels 112, 113.
Weiters sind Kühlplatten 109 jeweils zwischen den äußeren Batteriezellen 102 und den seitlichen Druckplatten 117 angeordnet. In zumindest einer äußeren Druckplatte 117 sind durch endseitige Rohrsegmente 112a, 113a gebildete Eintrittsstutzen 112b und Austrittsstutzen 113b angeordnet. Zwischen zwei zusammengesteckten Rohrteilen 112a, 113a kann jeweils ein Dichtelement 121 angeordnet sein. Further, cooling plates 109 are respectively disposed between the outer battery cells 102 and the side pressure plates 117. In at least one outer pressure plate 117, inlet ports 112b and outlet ports 113b formed by end-side tube segments 112a, 113a are arranged. Between two assembled tube parts 112a, 113a, a sealing element 121 can be arranged in each case.
Das Kühlmittel strömt vom Eintrittsstutzen 112b kommend durch den Eintritts- sammelkanal 112 und gelangt über Eintritte 106 der Kühlplatten 109 in die Kühlkanäle 105. Nach Durchströmen der Kühlkanäle 105 zwischen den Batteriezellen 102 tritt das Kühlmittel durch Austritte 107 aus den Kühlkanälen 105 aus und wird über Austrittssammelkanäle 113 dem Kühlkreislauf rückgeführt. The coolant flows from the inlet port 112b coming through the inlet collecting channel 112 and passes via inlets 106 of the cooling plates 109 in the cooling channels 105. After flowing through the cooling channels 105 between the battery cells 102, the coolant exits through outlets 107 from the cooling channels 105 and is via outlet collection channels 113 returned to the cooling circuit.
Der untere Gehäuseteil 103a und der obere Gehäuseteil 103b, sowie die Kühlplatten 109 werden durch Spannschrauben 118 gehalten und durch die seitlichen Spanndeckel 117 zusammengepresst. Der untere Gehäuseteil 103a und der obere Gehäuseteil sind dabei formschlüssig mit den Kühlplatten 109 über die Spannschrauben 118 verbunden. Zusätzlich kann gegebenenfalls zumindest ein Spannband analog zu Fig. 1 eingesetzt werden. The lower housing part 103 a and the upper housing part 103 b, and the cooling plates 109 are held by clamping screws 118 and compressed by the side clamping cover 117. The lower housing part 103a and the upper housing part are positively connected to the cooling plates 109 via the clamping screws 118. In addition, optionally at least one tension band can be used analogously to FIG. 1.
Unterer und oberer Gehäuseteil 103a, 103b, sowie die äußeren Ränder 109a der Kühlplatten 109 bilden dabei die seitliche Außenfläche des Batteriemoduls 101. Wie in den Fig. 12 und Fig . 13 gezeigt ist, können zwei Batteriemodule 101 über Befestigungsschrauben 119 und Niederhalter 120 gemeinsam an einem Untergrund befestigt werden. Lower and upper housing parts 103a, 103b, as well as the outer edges 109a of the cooling plates 109 form the lateral outer surface of the battery module 101. As shown in FIGS. 12 and FIG. 13, two battery modules 101 can be fastened together to a substrate via fastening screws 119 and hold-down 120.
Das Kühlmittel kann sowohl zum Kühlen als auch zum Aufheizen des Batteriemoduls 1, 101 verwendet werden. The coolant can be used both for cooling and for heating the battery module 1, 101.

Claims

P A T E N T A N S P R Ü C H E PATENT APPLICATIONS
1. Wiederaufladbare Batterie mit zumindest einem Batteriemodul (1, 101) mit zumindest einem Stapel (la; 101a) von vorzugsweise nebeneinander angeordneten Batteriezellen (2, 102), mit einem zumindest einen Kühlkanal (5, 105) aufweisenden Flüssigkeitskühlsystem, welcher mit zumindest einer Batteriezelle (2, 102) in thermischen Kontakt steht, wobei zumindest zwischen zwei benachbarten Batteriezellen (2, 102) ein Kühlkanalträger (4, 104) mit zumindest einem Kühlkanal (5, 105) angeordnet ist und jeder Kühlkanalträger (4, 104) aus zumindest zwei miteinander dicht verbundenen Teilen (4a, 4b; 104a; 104b) besteht, wobei in zumindest einen ersten Teil (4a, 104a) der Kühlkanal (5, 105) eingeformt ist, dadurch gekennzeichnet, dass ein zweiter Teil (4b) des Kühlkanalträgers (4) durch eine Folie (9) gebildet ist. A rechargeable battery having at least one battery module (1, 101) with at least one stack (1a, 101a) of preferably adjacent battery cells (2, 102), with a liquid cooling system having at least one cooling channel (5, 105) and having at least one Battery cell (2, 102) is in thermal contact, wherein at least between two adjacent battery cells (2, 102) a cooling channel carrier (4, 104) with at least one cooling channel (5, 105) is arranged and each cooling channel carrier (4, 104) of at least two closely connected parts (4a, 4b, 104a, 104b), wherein in at least a first part (4a, 104a) of the cooling channel (5, 105) is formed, characterized in that a second part (4b) of the cooling channel carrier ( 4) is formed by a film (9).
2. Batterie nach Anspruch 1, dadurch gekennzeichnet, dass der Kühlkanal (5) mäanderartig in den Kühlkanalträger (4, 104) zwischen einem Eintritt (6, 106) und einem Austritt (7, 107) eingeformt ist. 2. Battery according to claim 1, characterized in that the cooling channel (5) in a meandering manner in the cooling channel carrier (4, 104) between an inlet (6, 106) and an outlet (7, 107) is formed.
3. Batterie nach Anspruch 2, dadurch gekennzeichnet, dass der Eintritt (6, 106) mit einem quer zum Kühlkanalträger (4, 104) angeordneten Eintrittsammeikanal (12, 112) und der Austritt (7, 107) mit einem quer zum Kühlkanalträger (4, 104) angeordneten Austrittssammelkanal (13, 113) strömungsverbunden ist, wobei die Kühlkanäle (5, 105) von zumindest zwei Kühlkanalträgern (4, 104) durch den Einlasssammelkanal (12, 112) und den Auslasssammelkanal (13, 113) miteinander strömungsverbunden sind. 3. Battery according to claim 2, characterized in that the inlet (6, 106) with a transversely to the cooling channel carrier (4, 104) arranged Eintrittsammeikanal (12, 112) and the outlet (7, 107) with a transverse to the cooling channel carrier (4 , 104), wherein the cooling channels (5, 105) of at least two cooling channel carriers (4, 104) through the inlet collecting channel (12, 112) and the outlet collecting channel (13, 113) are fluidly connected to each other.
4. Batterie nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Kühlkanal (5, 105) in beiden Teilen angeordnet ist. 4. Battery according to one of claims 1 to 3, characterized in that the cooling channel (5, 105) is arranged in two parts.
5. Batterie nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Kühlkanal (5, 105) nur im ersten Teil eingeformt ist und der zweite Teil (4b) flach, vorzugsweise eben, ausgebildet ist. 5. Battery according to one of claims 1 to 3, characterized in that the cooling channel (5, 105) is formed only in the first part and the second part (4b) flat, preferably flat, is formed.
6. Batterie nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass der Kühlkanal (5, 105) zumindest eines Kühlkanalträgers (4, 104) mehrere im Wesentlichen parallel zueinander angeordnete Züge (5a, 105a) aufweist, wobei der Abstand zumindest zweier benachbarter Züge (5a, 105a) im Bereich (4", 104") einer oberen Hälfte des Kühlkanalträgers (4, 104) geringer ist als im Bereich (4', 104") einer unteren Hälfte des Kühlkanalträgers (4, 104). 6. Battery according to one of claims 1 to 5, characterized in that the cooling channel (5, 105) at least one cooling channel carrier (4, 104) has a plurality of substantially mutually parallel trains (5a, 105a), wherein the distance of at least two adjacent Trains (5a, 105a) in the region (4 ", 104") of an upper half of the cooling channel carrier (4, 104) is lower than in the region (4 ', 104 ") of a lower half of the cooling channel carrier (4, 104).
7. Batterie nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass zumindest ein Kühlkanalträger (104) durch eine zwischen zwei Batteriezellen (102) angeordnete Kühlplatte (109) gebildet ist. 7. Battery according to one of claims 1 to 6, characterized in that at least one cooling channel carrier (104) by a between two battery cells (102) arranged cooling plate (109) is formed.
8. Batterie nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass der Kühlkanalträger (104) zumindest teilweise aus Metall, vorzugsweise aus Aluminium, besteht. 8. Battery according to one of claims 1 to 7, characterized in that the cooling channel carrier (104) at least partially made of metal, preferably of aluminum.
9. Batterie nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass zumindest ein Teil (104a, 104b) des Kühlkanalträgers (104) aus Blech besteht, wobei in zumindest einen Teil (104a; 104b) des Kühlkanalträgers (104), vorzugsweise in beide Teile (104a, 104b), ein Kühlkanal (105) durch einen Blechumformvorgang eingeformt ist. 9. Battery according to one of claims 1 to 8, characterized in that at least part (104a, 104b) of the cooling channel carrier (104) consists of sheet metal, wherein in at least a part (104a, 104b) of the cooling channel carrier (104), preferably in both parts (104a, 104b), a cooling channel (105) is formed by a Blechumformvorgang.
10. Batterie nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass zumindest ein Kühlkanalträger (4) durch einen zumindest eine Batteriezelle (2) aufnehmenden Zellträger (8) gebildet ist, wobei vorzugsweise der Zellträger (8) einen Rahmen (8a) zur Aufnahme der Batteriezelle (2) aufweist. 10. Battery according to one of claims 1 to 9, characterized in that at least one cooling channel carrier (4) by at least one battery cell (2) receiving cell carrier (8) is formed, wherein preferably the cell carrier (8) has a frame (8a) for Receiving the battery cell (2).
11. Batterie nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass zumindest ein Teil (4a) des Kühlkanalträgers (4) aus Kunststoff, vorzugsweise aus Kunststoff-Spritzguss, besteht, wobei vorzugsweise der Kühlkanal (5) in den Kunststoff eingeformt ist. 11. Battery according to one of claims 1 to 10, characterized in that at least a part (4a) of the cooling channel carrier (4) made of plastic, preferably of plastic injection, consists, wherein preferably the cooling channel (5) is formed in the plastic.
12. Batterie nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass die Folie (9) elektrisch isolierend ausgebildet ist. 12. Battery according to one of claims 1 to 11, characterized in that the film (9) is designed to be electrically insulating.
13. Batterie nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass die Folie (9) flüssigkeitsdicht ausgebildet ist. 13. Battery according to one of claims 1 to 12, characterized in that the film (9) is formed liquid-tight.
14. Batterie nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, dass die Folie - zumindest teilweise - aus Kunststoff besteht. 14. Battery according to one of claims 1 to 13, characterized in that the film - at least partially - consists of plastic.
15. Batterie nach einem der Ansprüche 1 bis 14, dadurch gekennzeichnet, dass die Folie - zumindest teilweise - aus Metall besteht. 15. Battery according to one of claims 1 to 14, characterized in that the film - at least partially - consists of metal.
16. Batterie nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, dass die beiden Teile (4a, 4b; 104a, 104b) des Kühlkanalträgers (4, 104) fest miteinander verbunden, vorzugsweise durch Kleben, Löten oder Schweißen, besonders vorzugsweise Laserschweißen, dicht verbunden sind. 16. Battery according to one of claims 1 to 15, characterized in that the two parts (4a, 4b, 104a, 104b) of the cooling channel carrier (4, 104) fixedly connected to each other, preferably by gluing, soldering or welding, particularly preferably laser welding, are tightly connected.
17. Batterie nach einem der Ansprüche 1 bis 16, dadurch gekennzeichnet, dass der Eintrittssammelkanal (12, 112) und/oder der Austrittssammelkanal (13, 113) durch jeweils mehrere ineinander steckbare Rohrsegmente (112a, 113a) gebildet ist, wobei vorzugsweise zumindest ein Rohrsegment (112a, 113a) mit einem Kühlkanalträger (104) fest verbunden ist. 17. Battery according to one of claims 1 to 16, characterized in that the inlet collecting channel (12, 112) and / or the outlet collecting channel (13, 113) is formed in each case by a plurality of plug-in tube segments (112a, 113a), wherein preferably at least one tube segment (112a, 113a) with a cooling channel carrier (104) is firmly connected.
18. Batterie nach einem der Ansprüche 1 bis 17, dadurch gekennzeichnet, dass die Batteriezellen (102) und die Kühlkanalträger (104) in ein Zellträgergehäuse (108) eingesetzt sind, wobei vorzugsweise das Zellträgergehäuse (108) einen unteren Gehäuseteil (103a) und einen oberen Gehäuseteil (103b) aufweist. 18. Battery according to one of claims 1 to 17, characterized in that the battery cells (102) and the cooling channel carrier (104) are inserted into a cell carrier housing (108), wherein preferably the cell carrier housing (108) has a lower housing part (103 a) and a has upper housing part (103b).
19. Batterie nach Anspruch 18, dadurch gekennzeichnet, dass der obere und der untere Gehäuseteil (103a, 103b) und die Kühlkanalträger (104) formschlüssig und kraftschlüssig miteinander verbunden sind, wobei zwischen zwei Kühlkanalträgern (104) jeweils zumindest eine, vorzugsweise zwei Batteriezellen (102) angeordnet sind. 19. Battery according to claim 18, characterized in that the upper and the lower housing part (103a, 103b) and the cooling channel carrier (104) are positively and non-positively connected, wherein between two cooling channel carriers (104) each have at least one, preferably two battery cells ( 102) are arranged.
20. Batterie nach einem der Ansprüche 1 bis 19, dadurch gekennzeichnet, dass der Kühlkanalträger (4; 104) beidseits einer Hauptebene (ε) des Kühlkanalträgers (4; 104) Kühlkanäle (5; 105) aufweist, wobei vorzugsweise in der Trägerwand (16) zumindest eine Verbindungsöffnung (11) zur Strömungsverbindung der beiden Kühlkanäle (5) angeordnet ist. 20. Battery according to one of claims 1 to 19, characterized in that the cooling channel carrier (4; 104) on both sides of a main plane (ε) of the cooling channel carrier (4; 104) cooling channels (5; 105), wherein preferably in the support wall (16 ) is arranged at least one connection opening (11) for the flow connection of the two cooling channels (5).
PCT/EP2012/067684 2011-09-12 2012-09-11 Rechargeable battery WO2013037742A1 (en)

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