EP3747065A1 - Module d'accumulateurs électriques et batterie comprenant plusieurs modules - Google Patents
Module d'accumulateurs électriques et batterie comprenant plusieurs modulesInfo
- Publication number
- EP3747065A1 EP3747065A1 EP19710023.3A EP19710023A EP3747065A1 EP 3747065 A1 EP3747065 A1 EP 3747065A1 EP 19710023 A EP19710023 A EP 19710023A EP 3747065 A1 EP3747065 A1 EP 3747065A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- accumulators
- flange
- openings
- chambers
- module
- Prior art date
- Legal status (The legal status 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 status listed.)
- Pending
Links
Classifications
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- 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
- H01M10/61—Types of temperature control
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
-
- 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
- H01M10/05—Accumulators with non-aqueous electrolyte
- H01M10/052—Li-accumulators
- H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
-
- 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
- H01M10/643—Cylindrical 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
- H01M10/64—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
- H01M10/656—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
- 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
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
-
- 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
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
-
- 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
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/521—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the material
- H01M50/522—Inorganic material
-
- 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
- H01M50/50—Current conducting connections for cells or batteries
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/514—Methods for interconnecting adjacent batteries or cells
- H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
-
- 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 generally relates to batteries of energy storage elements, also called accumulators, connected in series and / or in parallel.
- a battery includes one or more battery modules connected to each other.
- Each battery module comprises an assembly of electric accumulators connected together by electrical connection elements.
- the battery may include a thermal battery storage system that can cool or heat the electric accumulators to improve battery performance and life.
- thermal conditioning systems by air, water or brine, or by dielectric liquid.
- a disadvantage of a thermal air conditioning system is the poor cooling performance.
- a disadvantage of a thermal water conditioning system is that the water and the brine have a low dielectric strength. The coolant must then be physically separated from all electrical conductors in the battery. The structure of the battery can then be complex and the cooling performance may not be sufficient. In addition, in case of shock, a water leak within the battery can generate a current leak or a short circuit.
- a dielectric liquid thermal conditioning system has the advantage that the coolant can be directly in contact with the electrical conductors and the accumulators.
- US patent application 2017/0005384 describes a battery comprising a thermal conditioning system that can use a dielectric liquid.
- a disadvantage of the battery described in US patent application 2017/0005384 is that it has a complex structure.
- the method of manufacturing the battery may include gluing steps of the electric accumulators, which can make difficult disassembly operations and / or maintenance.
- an object of an embodiment is to overcome at least in part the disadvantages of the batteries described above.
- One embodiment is directed to a battery comprising a thermal conditioning system of the electric accumulators using a dielectric liquid.
- An embodiment is directed to a battery having a simple structure.
- An embodiment is directed to a method of assembling a battery that does not include a bonding step.
- One embodiment is directed to a battery adapted to lithium-ion accumulators.
- One embodiment relates to a battery for which disassembly and / or maintenance operations are simple.
- One embodiment provides a battery module comprising: accumulators, each accumulator having first and second ends and an intermediate portion connecting the first and second ends;
- a first flange comprising first through openings, the first ends of the accumulators being fixed without gluing in the first openings;
- each first plate being connected to the first ends of the accumulators of a first set of accumulators among first accumulator assemblies;
- a second flange comprising second through openings, the second ends of the accumulators being fixed without gluing in the second openings;
- each second plate being connected to the second ends of the accumulators of a second set of accumulators among second sets of accumulators;
- a housing containing the accumulators, the first and second flanges and the first and second plates and defining, with the first and second flanges, first, second and third chambers for containing a dielectric liquid, the first flange separating the first and second chambers; and the second flange separating the second and third chambers, the first flange comprising first passages for the dielectric liquid between the first and second chambers and the second flange comprising second passages for the dielectric liquid between the second and third chambers.
- each first plate comprises first holes, each first hole being opposite one of the first passages, and each second plate comprises second holes, each second hole being facing one another. screw of one of the second passages.
- the first flange comprises lugs projecting into the first chamber, the first holes being traversed by said lugs.
- the first flange comprises third openings, distinct from the first openings, for the passage of the cooling liquid between the first and second chambers and the second flange comprises fourth openings, distinct from the second openings, for the passage of the coolant between the second and third chambers.
- each first plate and each second plate comprises a stack of at least first and second electrically conductive layers made of different materials, the first layer being in mechanical contact with at least two of the accumulators and the second layer being open vis-à-vis said at least two accumulators.
- the housing comprises first and second side panels and a tubular central part interposed between the first and second side panels and each first and second side panel comprises an inward facing face of the module, a through conduit opening at each end out of the module and an orifice communicating with the pipe and opening on said face, the orifice of the first side panel opening into the first chamber and the orifice of the second side panel opening into the second chamber.
- An embodiment also provides a battery comprising a stack of several modules as defined above.
- the battery comprises a system for compressing the modules of the stack.
- each first and second side panel comprises at least a fifth through opening, the fifth through openings of the modules of the stack being in the extension of each other, the compression system comprising at least one rod through the fifth openings of the modules.
- An embodiment also provides a method of manufacturing a battery module comprising the steps of:
- each accumulator having first and second ends and an intermediate portion connecting the first and second ends, on a first flange comprising first through openings, the first ends of the accumulators being fixed without gluing in the first openings;
- each first connecting plate being connected to the first ends of the accumulators of a first set of accumulators among first accumulator assemblies;
- each second lead plate being connected to the second ends of the accumulators of a second accumulator set of second accumulator assemblies;
- the accumulators, the first and second flanges and the first and second plates in a housing defining, with the first and second flanges, first, second and third chambers for containing a dielectric liquid, the first flange separating the first and second chambers; and the second flange separating the second and third chambers, the first flange comprising first passages for the dielectric liquid between the first and second chambers, the second flange comprising second passages for the dielectric liquid between the second and third chambers.
- Figures 1 to 3 are respectively a perspective view, a sectional view and an exploded perspective view, partial and schematic, of an embodiment of an electric storage module
- Figure 4 is a perspective view, partial and schematic, of a portion of the electric storage module shown in Figure 1;
- Figures 5 and 6 are respectively a perspective view and an exploded perspective view, partial and schematic, of an embodiment of a battery
- Figure 7 is a perspective view, partial and schematic, of another embodiment of an electric storage module
- Figures 8 and 9 are respectively a perspective view and a top view, partial and schematic, of a flange of the module shown in Figure 7;
- Figure 10 is a partial sectional and schematic sectional view of another embodiment of an electric storage module.
- Figures 1 to 3 are respectively a perspective view, a sectional view and an exploded perspective view of an embodiment of an electric storage module 10 and Figure 4 is a perspective view of a portion of of module 10 shown in Figure 1.
- Figure 2 comprises two sectional views in two different half-planes parallel to the plane Oxz.
- the module 10 comprises a housing 12 formed by a central piece 14 and two side panels 16A and 16B, Figure 4 showing the side panel 16B.
- the central piece 14 has a generally tubular shape extending in the Ox direction and preferably has a substantially constant cross section in the Ox direction.
- the central piece 14 may be made of aluminum, for example by extrusion.
- the central piece 14 is closed at two opposite ends by the side panels 16A, 16B.
- the same number followed by the suffix A is used to refer to the element of the side panel 16A and followed by the suffix B to designate the element of the side panel 16B.
- the side panels 16A, 16B can be fixed to the central piece 14 by screws 18.
- the housing 12 is inscribed in a rectangular parallelepiped whose dimension in the Ox direction is between 200 mm and 400 mm, for example about 300 mm, whose dimension in the direction Oy is between 140 mm and 250 mm, for example about 200 mm, and whose dimension in the direction Oz is between 70 mm and 110 mm, for example about 90 mm .
- the central piece 14 may comprise protuberances, not shown in FIG. 3, extending in the direction Ox and projecting into the internal volume of the central piece 14.
- Some elements of the module 10 are symmetrical with respect to a plane of symmetry parallel to the plane Oxy.
- the same number is used as reference followed by the suffix C to designate the element situated on one side of the plane of symmetry and followed by the suffix D to designate the element located on the other side of the plane of symmetry.
- the module 10 contains in the housing 12:
- connection plates 24C resting on the upper flange 22C and electrically connecting the accumulators 20 and lower connection plates 24D resting on the lower flange 22D and electrically connecting the accumulators 20.
- the module 10 may comprise from 2 to 500 accumulators 20.
- each accumulator 20 comprises first and second ends 26C, 26D and an intermediate portion 28 extending between the two ends 26C, 26D.
- the accumulators 20 have, for example, a generally cylindrical shape, in particular with a circular base, or a prismatic shape with an Oz axis.
- the accumulators 20 are, for example, lithium-ion accumulators, in particular lithium-ion accumulators of the lithium iron phosphate accumulator type, or LFP accumulator, nickel-manganese cobalt lithium-ion accumulators, or NMC accumulators, lithium-ion accumulators.
- each accumulator 20 further comprises first and second electrical terminals 30C, 30D.
- the first terminal 30C is preferably located on the first end 26C and the second terminal 30D is preferably located on the second end 26D.
- each flange 22C, 22D in the Ox direction is substantially equal to the dimension of the central part 14 in the Ox direction.
- the dimension of each flange 22C, 22D in the direction Oy is substantially equal to the maximum dimension in the direction Oy of the internal volume of the central part 14.
- Each flange 22C, 22D may comprise grooves, not shown in the figures, in which the flanges 22C, 22D may be made of any electrically insulating material and having a good mechanical strength such as for example polyoxymethylene (POM), polyamide (PA, in particular PA66), polyetheretherketone (PEEK) but also wood-based materials.
- POM polyoxymethylene
- PA polyamide
- PEEK polyetheretherketone
- Each flange 22C, 22D comprises through openings 32C, 32D, visible in FIG. 2, in which are housed the ends 26C, 26D of the accumulators 20. More specifically, for each accumulator 20, the end 26C of the accumulator 20 is housed in one of the openings 32C of the upper flange 22C and the end 26D of the accumulator 20 is housed in one of the openings 32D of the lower flange 22D. According to one embodiment, the openings 32D are oriented in the direction Oz and have a shape complementary to that of the ends 26C, 26D of the accumulators 20.
- the positive terminal of the accumulator 20 may be located at the upper flange 22C or 22D lower flange.
- the accumulators 20 may be arranged in staggered rows.
- the distance between the axes of two adjacent accumulators may be between 18.5 mm and 22 mm, for example about 20 mm.
- the minimum distance between two adjacent accumulators 20 may be between 0.5 mm and 4 mm, for example about 2 mm.
- each accumulator 20 is tightly mounted in the associated openings 32C, 32D.
- the upper flange 22C delimits an upper chamber 34C with the central part 14 of the housing 12.
- the lower flange 22D delimits a lower chamber 34D with the central part 14.
- the flanges 22C, 22D delimit between them an intermediate chamber 36.
- the chambers 34C, 34D and 36 are visible in FIG.
- connection plate 24C, 24D connects the positive or negative terminals of a first set of accumulators 20 with the negative or positive terminals of a second set of accumulators 20.
- the set of accumulators 20 and connection plates 24C , 24D form an electrical circuit in which the accumulators 20 are connected in series and / or in parallel between first and second access nodes, each access node corresponding to one of the connection plates 24C or 24D.
- the orientations of the accumulators 20 and the arrangement and dimensions of the connection plates 24C, 24D make it possible to obtain the desired serial / parallel connection of the accumulators 20.
- the number of accumulators 20 connected to each connection plate 24C, 24D varies from 2 to 500 accumulators 20.
- each connection plate 24C, 24D is connected to the positive terminal from 1 to 500 accumulators 20 and to the negative terminal from 1 to 500 accumulators 20.
- Two plates 24C or 24D adjacent are spaced a distance which depends in particular on the voltage supplied by the module 10, for example preferably at least two millimeters for a voltage provided by the module 60 V and preferably from minus 6 mm for a voltage supplied by the 400 V module.
- Each flange 22C, 22D comprises additional through openings 38C, 38D oriented in the direction Oz.
- each additional through opening 38C, 38D is cylindrical, of axis Oz, with a circular base.
- the diameter of each additional through opening 38C, 38D is between 0.5 mm and 5 mm.
- the connecting plates 24C, 24D comprise through holes 39C, 39D which extend the additional openings 38C, 38D.
- the intermediate chamber 36 communicates with the upper chamber 34C only through the holes 38C and 39C and the intermediate chamber 36 communicates with the lower chamber 34D only through the openings 38D and 39D.
- each through hole 39C, 39D is cylindrical, axis Oz, circular base.
- the diameter of each through hole 39C, 39D may be substantially equal to that of the additional through openings 38C, 38D.
- the connection plates 24C, 24D can be cut in the same plate.
- each panel 16A, 16B has at least partly symmetrical structures, especially with regard to the circulation of the cooling liquid.
- each panel 16A, 16B is inscribed in a rectangular parallelepiped and comprises two opposite main faces 40A, 40B, 41A, 41B and edges connecting the main faces, including an upper edge 42A, 42B and a lower edge 43A , 43B, opposite to the upper edge 42A, 42B.
- the main face 4OA is oriented towards the interior of the module 10.
- the side panels 16A, 16B can be made of any type of material having sufficient mechanical strength (resistance to an internal pressure of the module and the oil collectors of 10 ⁇ Pa (1 bar) for example and compatible with the dielectric fluid used (for example POM, PA66 or PEEK) .
- a use of an electrically conductive material is possible if a particular precaution is taken for electrically isolating the electrical power paths of the side panels.
- each side panel 16A, 16B comprises a through conduit 44A, 44B, for example a cylindrical pipe with a circular base, which extends in the direction Oz and opens on the upper edge 42A, 42B and on the edge lower 43A, 43B.
- the pipe 44A, 44B communicates with a Elongated orifice 45A, 45B which opens on the face 40A, 40B towards the inside of the housing 12.
- the elongate shape of the orifice 45A, 45B makes it possible to obtain a more homogeneous distribution of the cooling liquid in the chambers 34C, 34D.
- the elongate orifice 45A, 45B may be replaced by a point orifice.
- each panel 16A, 16B comprises a tip 52A, 52B which extends the pipe 44A, 44B at the end located on the lower edge side 43A, 43B.
- the end pieces 52A, 52B are not present and are replaced by O-rings.
- each side panel 16A, 16B comprises a flange 46A, 46B which extends on the face 40A, 40B towards the inside of the module 10 and which fits into the central part 14.
- Each side panel 16A, 16B comprises a gasket, not shown in FIG. 2, on the face 40A, 40B, only the gasket 48B being visible in FIG. 4.
- the flanges 46A, 46B and the seals 48B ensure a sealed connection between the side panels 16A, 16B and the central piece 14.
- a dielectric coolant is intended to circulate in the module 10.
- the dielectric cooling liquid may be chosen from the group comprising a synthetic oil and a poly-alpha-olefin oil, a natural or synthetic ester, a mineral oil electric transformer or other fluid with a dielectric strength to isolate cells between them under any circumstances of use of the system.
- the dielectric cooling liquid is chosen from the group comprising perfluorohexane, perfluoromethylcyclohexane and perfluoro-1,3 dimethylcyclohexane, perfluorodecalin, perfluoromethyldecalin, trichlorofluoromethane, trichlorotrifluoroethane, methanol and ethanol.
- the coolant enters module 10 through line 44A (arrow A).
- the coolant then divides into a part which continues its way in the pipe 44A (arrow B) until it leaves the module 10 (arrow C) and a part which enters the upper chamber 34C through the elongate orifice 45A ( arrow D).
- the coolant then enters the intermediate chamber 36 through openings 38C and holes 39C.
- the coolant then circulates in the intermediate chamber 36 in contact with the accumulators 20 (arrows E).
- the coolant preferably circulates in the direction Oz.
- the coolant then enters the lower chamber 34D through openings 38D and holes 39D.
- the coolant passes through line 44B through the elongated hole 45B (arrow F).
- the coolant from the elongate orifice 45B mixes with the coolant flowing in the line 44B (arrow G) and leaves the module 10 (arrow G).
- the flow of the coolant in contact with the accumulators 20 provides optimum cooling performance.
- the dimensions and the distribution of the openings 38C, 38D are chosen so that the flow of the coolant is substantially homogeneous in the intermediate chamber 36.
- Each side panel 16A, 16B further comprises at least two through openings 54A, 54B, for example having a cylindrical shape with a circular base, which extend in the direction Oz. As described in more detail below, the openings 54A, 54B are used for attaching multiple modules 10 to each other.
- the side panel 16A further comprises two electrical terminals 56, 58 located, for example, on the large face 41A of the side panel 16A.
- the electrical terminal 56 is electrically connected to the connection plate 24C or 24D corresponding to the first access node of the electric circuit formed by the accumulators 20, by an electrical conductor not visible in the figures, and the electrical terminal 56 is electrically connected to the connection plate 24C or 24D corresponding to the second access node of the electric circuit formed by the accumulators 20, by electrical conductors not visible in the figures.
- the module 10 may further comprise sensors, not shown, adapted to measure different signals during operation of the module 10.
- the sensors may comprise at least one temperature sensor for measuring the temperature in the vicinity of the accumulators 20
- the module 10 comprises a plurality of temperature sensors.
- the sensors may comprise sensors for the voltages at the terminals of the accumulators 20.
- the module 10 may further comprise at least one heating element used to heat the accumulators 20.
- the module 10 may comprise a printed circuit, for example a flexible printed circuit, not shown, on which the sensors and / or the heating elements are provided.
- the flexible printed circuit then comprises electrically conducting tracks, for example copper, on a support film and electronic components or electronic circuits are attached to the conductive tracks.
- the flexible printed circuit may comprise an RFID (Radio-frequency identification) tag.
- the flexible printed circuit board can be connected to accumulators 20 of the battery.
- the printed circuit may be connected to a processing module located outside or inside the module 10 for example by electrical conductors, in particular a flexible sheet, passing through the side panel 16B through an opening visible in FIGS. 4.
- each connection plate 24C, 24D comprises a stack of at least a first electrically conductive layer 60C, 60D and a second electrically conductive layer.
- the first layer 60C, 60D is in mechanical contact with the accumulators 20.
- the second layer 62C, 62D comprises openings 64C, 64D located opposite the accumulators 20.
- the first layer 60C, 60D is made of a material selected from the group consisting of nickel-plated steel, nickel, nickel-plated copper and any material allowing easy soldering on the accumulators.
- the thickness of the first layer 60C, 60D is between
- the second layer 62C, 62D is made of a material chosen from the group comprising copper, aluminum, beryllium copper and any material with good electrical conductivity.
- the thickness of the second layer 62C, 62D is between 0.2 mm and 2 mm.
- the electrical conductivity properties of the connection plate 24C, 24D are essentially provided by the second layer 62C, 62D while the material constituting the first layer 60C, 60D is chosen in particular to obtain a good quality electrical connection with the accumulators 20, in particular to facilitate the welding of the first layer 60C, 60D with the accumulators 20.
- An embodiment of a method of manufacturing a module 10 comprises the following steps:
- connection plate 24C setting up each connection plate 24C on the upper flange 22C, fixing each connection plate 24C to the accumulators, for example by electric welding, placing each connection plate 24D on the lower flange 22C and fixing each connection plate 24C to the accumulators 20, for example by electric welding;
- the electric circuit formed by the accumulators 20 can easily be modified by changing the arrangement and the dimensions of the connection plates 24C, 24D and / or by changing the orientation of the accumulators 20 without modifying the housing 12 or the flanges 22C, 22D.
- the module 10 can thus easily be modified to adapt to different applications.
- the mechanical links between the flanges 22C, 22D and the central part 14 of the housing 12, between the flanges 22C, 22D and the accumulators 20 and between the connection plates 24C, 24D and the accumulators 20 ensure the rigidity of the assembly and the maintaining the accumulators 12.
- FIGS. 5 and 6 are respectively a perspective view and an exploded perspective view of an embodiment of a battery 70.
- the battery 70 comprises a stack 72 of nine modules 10 arranged so that, with the exception of side panels 16A, 16B of the module located at one end of the stack 72, the tip 52A of each side panel 16A enters the line 44A of the side panel 16A next of the stack 72 and the tip 52B of each side panel 16B enters the pipe 44B of the side panel 16B following the stack 72.
- the through openings 54A of the side panels 16A are then located in the extension of each other and the through openings 54B of the side panels 16A are then located in the extension of each other.
- the modules 10 are attached to each other by rods 74 which extend into the through openings 54A, 54B.
- Nuts 76 and washers 78 provided at the ends of the rods 74 allow the modules 10 to be compressed.
- each endpiece 52A, 52B forms, with the conduit 44A, 44B in which it enters, a tight connection to the coolant.
- the battery 70 may comprise end plates 80, 81 located at each end of the stack 72 and fixed to the stack 72 via the rods 74.
- the end plates 80, 81 may allow to fix the battery 70 to a support, not shown.
- Each end plate 80, 81 comprises a tubular element 82, 83 whose opening passes through the end plate 80, 81 from one side to the other.
- the tubular element 82 of the end plate 80 is located in line with the pipe 44A of the adjoining side panel 16A while the end plate 80 completely closes the pipe 44B of the adjoining side panel 16B.
- the tubular element 83 of the end plate 81 is located in the extension of the pipe 44B of the side panel 16B adjoining, the tip 52B can penetrate the tubular element 82B, while the end plate 81 completely mouth the pipe 44A of the side panel 16A adjoining.
- the battery 70 comprises electrical connectors 84, visible in FIG. 5, electrically connecting the modules 10 to each other and situated outside the modules 10.
- the modules 10 are connected in series, that is to say that, for each module 10 except the two modules located at the ends of the stack 72, a first connector 84 connects the electrical terminal 56 to the electrical terminal 58 of the one of the two adjacent modules 10 and a second connector 84 connects the electrical terminal 58 to the electrical terminal 56 of the other of the two adjacent modules 10.
- Two electrical connectors 86 are connected to electrical terminals 56, 58 of the modules 10 at the ends of the stack 72 not connected to another module 10.
- a fuse 87 may be provided on one of the connectors 86.
- the battery 70 may comprise, in addition to the end plates 80, 81, or instead of one and / or the other of the end plates 80, 81, at least one additional element, which may be fixed to the stack 72 by the rods 74, such as a hydraulic pump adapted to drive the coolant in the modules 10, a heat exchanger in particular for cooling the cooling liquid or an electrical connection block.
- the circulation of the coolant in the modules 10 is implemented by a pump, not shown, which injects the cooling liquid through the tubular element 82.
- the cooling liquid then supplies each module 10 via the communicating conduits 44A.
- the coolant is recovered in the lines 44B and is evacuated by the tubular element 83.
- each module 10 comprises sensors
- all the sensors of the modules can be connected to a processing module.
- the processing module may correspond to a dedicated circuit or may comprise a processor, for example a microprocessor or a microcontroller, adapted to execute instructions of a computer program stored in a memory.
- the processor module may act as a battery monitoring system adapted, for example, to monitor the accumulator voltages to remain within an allowable operating range, to monitor the charge level of the accumulators and possibly to balance the loads, regulate the charging current in the recharge periods, regulate the discharge current, etc.
- An embodiment of a method of manufacturing the battery 70 comprises the following steps: manufacture of the modules 10 constituting the battery 70 as previously described;
- At least two batteries 70 having the structure shown in FIG. 5, possibly with a different number of modules 10, may be connected in series and / or in parallel depending on the intended application.
- the number of accumulators 20 connected in series of the battery can vary from four, in particular for a battery 70 providing a voltage of the order of 12 V, to more than one hundred, in particular for a battery providing a voltage greater than 700 V or 1000 V.
- the battery 70 is, for example, intended to be used for powering a laptop or a cordless screwdriver, for example with four accumulators in series, a bicycle electric assistance, an electric car or another electric vehicle.
- FIG. 7 is a perspective view, partial and schematic, of another embodiment of a module 90 of electric accumulators, the housing 12 is not shown.
- the module 90 comprises all the elements of the module 10.
- Each flange 22C, 22D further comprises lugs 92C, 92D oriented towards the connection plates 24C, 24D.
- Some lugs 92C, 92D extend through the holes 39C, 39D of the connecting plates 24C, 24D.
- the lugs 92C, 92D make it possible to facilitate the positioning of the connection plates 24C, 24D, especially before they are fixed to the accumulators 20.
- the additional through openings 38C, 38D can pass through the flanges 22C, 22D substantially in the center of the lugs 92C , 92D.
- FIGs 8 and 9 are respectively a perspective view and a top view, partial and schematic, of the upper flange 22C of the module 90 shown in Figure 7.
- each lug 92C has, in plan view, a cross section inscribed in an equilateral triangle.
- each lug 92C overhangs at least one of the through openings 32C, 32D. The pins 92C thus act as stops in the direction Oz when placing the accumulators 20 on the pans 22C, 22D.
- FIG. 10 is a sectional view, partial and schematic, of another embodiment of the flange 22C of the electric storage accumulator module 20, the flange 22D possibly having an identical structure.
- the cutting plane is parallel to the Oxy plane.
- the flange 22C does not include additional openings 38C.
- each opening 32C does not form a tight connection with the accumulator 20 that it receives.
- Each opening 32C comprises protuberances 94C in contact with the accumulator 20 and delimiting with the accumulator 20 passages 96C.
- the passages 96C play the same role as the additional openings 38C, 38D.
- the accumulator 20 is mounted tightly in the opening 32C and is held by the protuberances 94C.
- the compression of the modules 10 is carried out via the rods 74, it is clear that any compression system of the modules 10 can be used.
- the rods 74 may be replaced by a flange which clamps the modules against each other, or a strap which surrounds the stack 72 of modules 10.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1850671A FR3077431B1 (fr) | 2018-01-29 | 2018-01-29 | Module d'accumulateurs electriques et batterie comprenant plusieurs modules |
PCT/FR2019/050168 WO2019145652A1 (fr) | 2018-01-29 | 2019-01-25 | Module d'accumulateurs électriques et batterie comprenant plusieurs modules |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3747065A1 true EP3747065A1 (fr) | 2020-12-09 |
Family
ID=62683282
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19710023.3A Pending EP3747065A1 (fr) | 2018-01-29 | 2019-01-25 | Module d'accumulateurs électriques et batterie comprenant plusieurs modules |
Country Status (6)
Country | Link |
---|---|
US (1) | US20210098836A1 (fr) |
EP (1) | EP3747065A1 (fr) |
JP (1) | JP2021511641A (fr) |
CN (1) | CN111656561A (fr) |
FR (1) | FR3077431B1 (fr) |
WO (1) | WO2019145652A1 (fr) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2022012704A1 (fr) * | 2020-07-15 | 2022-01-20 | Scio Technology Gmbh | Module de stockage d'énergie permettant de stocker de l'énergie électrique |
SE545205C2 (en) * | 2021-05-06 | 2023-05-16 | Apr Tech Ab | A liquid cooled module with a restricting member |
TWI802079B (zh) * | 2021-11-15 | 2023-05-11 | 達宇電能科技股份有限公司 | 以低壓注塑的連接件及具有該連接件之可卸式電池組 |
DE102021131506A1 (de) | 2021-12-01 | 2023-06-01 | Bayerische Motoren Werke Aktiengesellschaft | Batteriepaket und Kraftfahrzeug mit einem solchen |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10223782B4 (de) * | 2002-05-29 | 2005-08-25 | Daimlerchrysler Ag | Batterie mit wenigstens einer elektrochemischen Speicherzelle und einer Kühleinrichtung und Verwendung einer Batterie |
US8535842B2 (en) * | 2005-04-22 | 2013-09-17 | GM Global Technology Operations LLC | Combustion-thawed fuel cell |
US20070009787A1 (en) * | 2005-05-12 | 2007-01-11 | Straubel Jeffrey B | Method and apparatus for mounting, cooling, connecting and protecting batteries |
JP2007165200A (ja) * | 2005-12-15 | 2007-06-28 | Toyota Motor Corp | 電池パック |
KR101091211B1 (ko) * | 2008-02-28 | 2011-12-07 | 주식회사 엘지화학 | 전기자동차용 제트 타입 배터리팩 |
FR2939969B1 (fr) * | 2008-12-16 | 2010-12-10 | Saft Groupe Sa | Systeme de maintien d'accumulateurs electrochimiques |
JP5456371B2 (ja) * | 2009-05-28 | 2014-03-26 | 三洋電機株式会社 | 車両用のバッテリシステム及びこのバッテリシステムを搭載する車両 |
JP5516166B2 (ja) * | 2010-07-13 | 2014-06-11 | 日産自動車株式会社 | 車両用電源装置 |
FR2963485B1 (fr) * | 2010-07-29 | 2013-03-22 | Commissariat Energie Atomique | Batterie d'accumulateurs a conception et montage facilites |
KR101338258B1 (ko) * | 2010-11-17 | 2013-12-06 | 주식회사 엘지화학 | 냉매의 분배 균일성이 향상된 전지팩 |
JP2015172997A (ja) * | 2012-07-13 | 2015-10-01 | 三洋電機株式会社 | バッテリシステム及びバッテリシステムを備える車両並びに蓄電装置 |
DE102012111970A1 (de) * | 2012-12-07 | 2014-06-12 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Batterieanordnung und Verfahren zum Kühlen einer Batterie |
DE102012111969A1 (de) * | 2012-12-07 | 2014-06-12 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Batterieanordnung für den Einsatz in einem Kraftfahrzeug |
DE102014206646A1 (de) * | 2014-04-07 | 2015-10-08 | Robert Bosch Gmbh | Energiespeichereinheit, insbesondere Batteriemodul, und Energiespeichersystem mit einer Mehrzahl von Energiespeichereinheiten |
US11108100B2 (en) * | 2015-06-30 | 2021-08-31 | Faraday & Future Inc. | Battery module for vehicle energy-storage systems |
US10784545B2 (en) * | 2016-03-25 | 2020-09-22 | Xing Power Inc. | Submerged cell modular battery system |
-
2018
- 2018-01-29 FR FR1850671A patent/FR3077431B1/fr active Active
-
2019
- 2019-01-25 US US15/733,426 patent/US20210098836A1/en active Pending
- 2019-01-25 CN CN201980010732.XA patent/CN111656561A/zh active Pending
- 2019-01-25 JP JP2020541358A patent/JP2021511641A/ja active Pending
- 2019-01-25 WO PCT/FR2019/050168 patent/WO2019145652A1/fr unknown
- 2019-01-25 EP EP19710023.3A patent/EP3747065A1/fr active Pending
Also Published As
Publication number | Publication date |
---|---|
FR3077431A1 (fr) | 2019-08-02 |
FR3077431B1 (fr) | 2020-07-31 |
JP2021511641A (ja) | 2021-05-06 |
CN111656561A (zh) | 2020-09-11 |
WO2019145652A1 (fr) | 2019-08-01 |
US20210098836A1 (en) | 2021-04-01 |
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