Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
  • B60L50/00—Electric propulsion with power supplied within the vehicle
  • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
  • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
  • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
• • 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
  • 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
  • H01M10/643—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
  • H01M10/65—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
  • 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
• • 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
  • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
  • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
• • 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
  • H01M50/251—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for stationary devices, e.g. power plant buffering or backup power supplies
• • 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
  • H01M50/256—Carrying devices, e.g. belts
• • 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
  • H01M50/50—Current conducting connections for cells or batteries
  • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
• • 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
  • H01M50/514—Methods for interconnecting adjacent batteries or cells
  • H01M50/516—Methods for interconnecting adjacent batteries or cells by welding, soldering or brazing
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M2220/00—Batteries for particular applications
  • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
• • 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
• • 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
  • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
  • Y02T10/00—Road transport of goods or passengers
  • Y02T10/60—Other road transportation technologies with climate change mitigation effect
  • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

• the present invention relates to the field of battery systems for equipping mobile systems, such as vehicles or for stationary storage, more particularly of the type comprising an arrangement of several batteries forming a stack of staged batteries.
• a battery pack or "pack” of batteries is itself most often made up of a plurality of individual batteries connected to each other. These batteries can have various geometric shapes: prismatic, of the "pouch” type or even cylindrical. They are electrically connected according to the needs of the application, forming a combination of batteries in series and in parallel. To this end, it is necessary to be able to connect their polarities through a conductive element which can then for example be screwed or soldered to their terminals. For certain applications in which the current flowing through the batteries is weak, stacks of batteries that are not integral, simply in contact (as in a portable radio) can be found. But for most applications, when a high current and / or voltage is required, the batteries must be secured together through a conductive element. This is especially the case for applications in which the pack will be subjected to vibrations or acceleration, as is the case with a battery pack for vehicles.
• the most frequently used cylindrical batteries are of the 18650 type (diameter 18 mm, length 65 mm), but there is also the type 21700 for example (21 mm in diameter, 70 mm along).
• To assemble such cylindrical batteries it is necessary to begin by arranging them vertically one next to the other in an arrangement of rows and columns.
• rigid supports made of non-electrically conductive materials that look like a plate with holes to accommodate the batteries.
• Such a support can be placed below and another above the batteries, then proceed to their electrical connection, for example by welding a strip of nickel to the terminals of the batteries. Once the connection is made, this assembly is held mechanically and allows the supported batteries to be handled as a single assembly.
• An objective of the invention is to remedy the drawbacks of the battery arrangements described in the aforementioned documents and to propose an arrangement of batteries on several stages (at least two) making it possible to partially or totally overcome the need for connect the battery stages after superimposing them.
• a battery holder comprising a support plate in the thickness of which are formed at least two adjacent through holes, each hole being able to receive, one, the end comprising the terminal of a first battery and the other, the end comprising the terminal of a second battery, as well as a connection element coming into contact with the terminals of said batteries which it electrically connects, characterized in that said plate comprises two parts forming a movable assembly so as to pass from a deployed position in which the two parts are arranged side by side in the same plane to a folded position in which the two parts are located one above the other, the connection element connecting the terminals of the batteries in the deployed position and in the folded position.
• the invention provides a battery support allowing easy passage from the deployed position of the support which corresponds to the position in which the batteries are assembled with said support to a folded position of the support in which the batteries are located one in the extension of the other while being electrically connected, which forms a staged assembly of batteries.
• battery support is understood to mean an assembly forming a support for electric batteries and comprising a battery support plate, which has the role of maintaining them in position within the support, and an electrical connection element which has the role of electrically connecting the battery terminals between them.
• the support of the invention incorporates an electrical connection element from the start, therefore from the installation of the batteries, a connection which is made robust, for example by welding a conductive element to the terminals of the batteries thus ensuring their electrical connection.
• Such an electrical connection is therefore maintained when the support is folded, the conductive element folding with the support and thus ensuring the continuity of the connection when the batteries are stacked in stages. It can be two floors, but also more if necessary.
• the electrical connection which is made within the support of the invention can electrically connect the terminals of the two batteries in series when the connection element connects the negative terminal of a first battery with the negative terminal of the second battery or in parallel when the connection element interconnects the terminals having the same polarity of the two adjacent batteries.
• the upper face of the plate can extend in a plane P, said parts can be delimited by a median plane M passing between said orifices and which is perpendicular to the plane P, said two parts being able to be movable around a axis of rotation parallel to plane P and included in plane M. Said two parts can be separated by a foldable hinge made of the same material as the support plate.
• connection element can fold together with the other parts of the support when changing from the deployed position to the folded position.
• the plate may comprise on its upper face recesses arranged at the edge of said orifices and which form stops for the batteries.
• the plate may include means for locking the two parts in the folded position relative to each other.
• the plate may include a groove for receiving the connection element.
• the lateral edge of said plate can include at least one longitudinal axis groove perpendicular to the plane P.
• the plate may include at the ends of the assembly members with an adjacent support.
• Each plate part may comprise a series of at least two orifices, the orifices of a series of a part of the plate being arranged opposite the orifices of the series of the second part of the plate and the connection element may be a connection bus connecting the various orifices to one another.
• the object of the invention is also achieved with a battery pack comprising a battery holder according to the invention and at least two batteries connected by the connection element of the holder.
• the battery pack may include an even number of battery stages.
• Two battery packs can be interconnected by means of an electrically conductive strip disposed at the ends of the batteries opposite to those held by the support.
• the battery pack may include an odd number of battery stages. Two battery packs in the folded position can be connected to each other at the free ends using an electrically conductive member.
• the electrically conductive member may include a central part connected by joints to two end parts.
• the battery pack may include a cooling module in thermal contact with the batteries held by a support in the folded position.
• the invention makes it possible to easily integrate, during the deployment of the assembly already electrically connected and into the battery pack thus constituted, an efficient cooling technology based on heat conducting pipes inserted between the batteries without having to make any connections. additional electrics.
• the subject of the invention is also a method of assembling a stack of staged batteries characterized in that it comprises the following steps:
• At least two batteries are placed vertically next to each other by inserting the end comprising the terminal of a first battery and the end comprising the terminal of a second battery in a holder according to the invention;
• connection element is placed on the support plate by bringing it into contact with the terminals of said batteries;
• connection element is carried out on the terminals of said batteries
• FIG. 1a illustrates a perspective view of a block comprising two batteries mounted in a support of the invention in the deployed position and FIG. 1b the same block where the batteries are stepped, the support being in the folded position;
• FIG. 2 is an exploded perspective view of the support of the invention in an alternative embodiment
• FIG. 3a is a perspective view of a battery pack using the support of FIG. 2 and FIG. 3b illustrates the block of FIG. 3a with the batteries stepped, the support being in the folded position;
• FIG. 4 is an exploded perspective view of another variant embodiment of the invention.
• FIG. 5 is a perspective view of a stacked battery pack according to yet another variant of the invention in which already folded battery packs are electrically connected to each other;
• FIG. 6a and 6b schematically illustrate how one can connect two battery packs according to a variant of the invention
• FIG. 7 is a schematic view of a battery pack in folded mode of the variant illustrated in Figure 6b;
• FIG. 8 is a schematic view illustrating an example of connection of several battery packs of FIG. 7;
• FIG. 9 is a schematic view of a preferred embodiment of the battery pack of Figure 8 incorporating heat pipes;
• FIG. 10 is a schematic view of another alternative embodiment of the invention.
• FIGS. 11 and 12 are schematic views of certain details of the construction of the block of FIG. 10;
• FIG. 13 is a preferred embodiment of the block of Figure 10 illustrated here in the folded position
• FIG. 14 illustrates a detail of the attachment of the heat collector to the heat tube used in a battery pack
• FIGS 15a and 15b are perspective views of a battery pack using two supports of Figure 2, the block being shown in the mounting position and respectively in the stepped position of the batteries.
• Figure la illustrates a battery support 10 made in the form of a plate in the thickness of which are formed two through holes 2a, 2b adjacent.
• the plate is for example made by molding or injection of a plastic material of the type styrenic polymer such as ABS (acrylonitrile butadiene styrene) which is an electrically insulating and flame retardant material.
• ABS acrylonitrile butadiene styrene
• the two cylindrical batteries 12 which are held vertically in place by the support 10, each battery 12 being inserted with one of its ends into each orifice 2a, 2b of the support 10, the longitudinal axis of each battery 12 being perpendicular to the plane P of the plate (fig. 2).
• the support 10 also comprises a connection element 4 which is a metal sheet, for example made of nickel or copper and comes into contact with the electrical terminals of the batteries 12, the contact preferably being made by soldering the metal sheet to the terminals of the batteries.
• a connection element 4 which is a metal sheet, for example made of nickel or copper and comes into contact with the electrical terminals of the batteries 12, the contact preferably being made by soldering the metal sheet to the terminals of the batteries.
• the connection element 4 is a metal sheet having an L-shape, the large side of the L forming a transverse tab 5 connecting the terminals of the batteries to one another and the small side forming a tab. 7 projecting outside the support 10 making it possible to take a voltage, for example.
• the batteries are arranged within the support so that the two terminals 14a and 14b have the same polarity, connected in parallel by the connection element 4.
• Figure 2 illustrates a support 10 according to an alternative embodiment of the invention, the support being produced in the form of a plate, as in the previous example, but having a larger surface area than that of the previous example, thus making it possible to receive eight through-holes 2a, 2b, 4a, 4b, 6a, 6b, 8a, 8b which are made in its thickness.
• the first quarter of the surface of the support 10 comprising the orifices 2a and 2b is identical to that of the support 10 of FIG.
• the orifices 2a to 8b of circular section have a constant diameter in the thickness of the plate and of a dimension allowing to receive the end 14 of a battery with a sliding play.
• Each of the orifices 2a to 8b comprises recesses 17 on its periphery, four in number for each orifice, recesses which extend in the plane P of the support 10 and form axial stops for the batteries 12.
• the recesses 17 of four orifices neighbors 2a, 2b, 4a, 4b form an island 18 projecting slightly vertically with respect to the front wall of each orifice, which thus makes it possible to form with the latter and with a neighboring island 18 a groove 19 for receiving an element electrically conductive to establish a connection, for example a transverse tab 5.
• the half of an island 18 is present between two neighboring orifices, for example 2a, 4a, which makes it possible to form a groove 19 with the front wall of the orifices 2a, 4a and thus to maintain in position an electrically conductive element to establish a connection between the batteries, for example a longitudinal tab 9 of the connection element 40.
• connection element 40 which is a metal sheet of generally rectangular shape, with a thickness of less than 1mm made of nickel or copper and in which are cut three windows 11 rectangular in shape.
• the connection element 40 thus produced has two longitudinal tabs 9 parallel to each other and connected by four transverse tabs 5, a tab 7 also being provided at one end of the connection element 40 to make a voltage tap.
• the islands 18 of the support 10 pass through the windows 11 of the connection element and allow it to be held in place and in the correct position, so that the connection element 40 can be welded quickly to the battery terminals 12. .
• said support plate 10 is made in two parts 10a, 10b delimited by a median plane M passing between said orifices 2a, 2b, equidistant from the centers thereof and which is perpendicular to the plane P of the plate, and the two parts 10a, 10b form a movable assembly so as to move from a deployed position (fig. La) in which the two parts 10a, 10b are arranged side by side in the same plane at a folded position (fig. 1b) in which the two parts 10a, 10b are located one above the other.
• the parts 10a, 10b are movable around an axis of rotation 16 parallel to the plane P and included in the plane M.
• the axis of rotation 16 is materialized by the middle part of a hinge 13 flexible preferably part of the support 10, being made of the same material as the plate of the support 10. This material of the support 10 is also expected to be able to present a junction or hinge in its middle, between the parts 10a, 10b such that the part can be folded back on itself without breaking.
• connection element 4 folds at the same time as the other parts of the support during the passage from the deployed position to the folded position.
• the connection element 4 is preferably a flexible sheet, having the same bending capacity (because subject to the same imposed displacement) as the hinge of the support plate 10 and thus following the folding movement of the support 10 between the two positions, while ensuring the connection in the deployed position and in the folded position.
• the support 10 also has locking means in the folded position of the two parts relative to each other, for example hooks 3a which protrude vertically from the part 10a of the support plate and cooperate with retaining holes 3b of complementary shape made in part 10b of the support plate 10.
• the support 10 has on the lateral edge, in particular on the longitudinal sides thereof, several grooves 25 of generally semi-cylindrical shape and of longitudinal axis perpendicular to the plane P.
• the grooves 25 are made in the wall of the support 10 which separates two orifices, for example 2b and 4b, 2a and 4a respectively.
• the grooves 25 are used for cooling the batteries, for example by installing cooling tubes in the grooves 25, as will be explained later.
• the plate of the support 10 also comprises assembly members 27 with the plate of an adjacent support 10, which allows an assembly of staged batteries in the form of a modular construction, from a support 10 of the invention.
• the method of assembling a stack of batteries 1 of Figures la and lb comprises the following steps:
• At least two batteries 12 are placed vertically next to each other by inserting the end comprising the positive terminal of a first battery 12 and the end comprising the negative terminal of a second battery 12 into the orifices 2a, 2b of the support 10; - There is an electrically conductive connection element 4 on the support plate 10 by bringing it into contact with the terminals of said batteries;
• connection element 4 is carried out on the terminals of the batteries 12, which weld may be of the resistive type or by external heat input using a laser beam, and in the latter case, additional pressure must ensure contact before welding; - Said support 10 is folded so as to superimpose the two parts 10a, 10b of the support 10 together with the connection element 4 to obtain the battery pack 1 in stages.
• Figures la and lb illustrate the connection mode for the smallest possible entity with two batteries 12 in series.
• these two batteries 12 are first arranged vertically next to each other with the opposite polarity of each battery on the same horizontal plane.
• the two batteries 12 are capped by the plate of the support 10 which holds them in place and are electrically connected by the connection element 4.
• the two parts 10a and 10b of the support 10 are pivoted with respect to one another.
• Another around the axis 16 of the hinge 13 the flexibility of the metal sheet of the connection element 4 allowing movement, one can turn one battery on top of the other to obtain a battery pack arrangement 1 on two floors, as seen in figure lb. Thanks to the hooks 3a and the corresponding receiving holes 3b forming a counter-shape, the new position of the arrangement of the stacked battery pack is locked.
• FIG. 3a and 3b illustrate another variant of the invention in which the battery pack 1 has a more complex architecture.
• this is a configuration comprising 8 batteries in which two arrangements of 4 batteries, themselves connected in parallel, are placed in series.
• the example described here puts in series two rows of four batteries connected in parallel with one another with an eight-hole support plate, but it is of course possible to envisage a plate of sixteen holes for example, of generally square shape and provided with an axis folding in the middle, allowing two rows of eight batteries connected in parallel to be placed in series.
• FIG. 4 illustrates another variant embodiment of the invention showing an assembly 100 produced by a combination of a stacked battery pack assembly 1 of the invention with cooling modules 30.
• the cooling modules 30 each include a heat pipe whose operation is based on the principle of the evacuation of calories by heat tubes 32 equipped with thermal collectors 34 made of a thermally conductive material (for example aluminum) partially enveloping the cylindrical batteries 12 with which they are in contact.
• the heat tubes 32 contain a fluid which vaporizes at the contact of the collectors 34 under the effect of the heat of the battery emitted during its operation. The vapor fills the tube and condenses where the temperature is lower than the condensing temperature. The condensate then falls by gravity into the bottom of the tube, at the level of the batteries 12.
• the heat exchanged comes from the latent heat associated with the phase changes. Obtaining a cooler location on the tube may be due to the surrounding environment (e.g. atmospheric air) or that of a heat dissipating element (e.g. fins not shown in the drawings) on the top of the tube 32.
• the heat tubes 32 are preferably arranged vertically in order to take full advantage of the effect of gravity.
• each stacked battery pack 1 uses eight batteries 12, the cooling battery pack assembly therefore comprises two stacked battery packs 1 each having 8 batteries and a cooling module 30 having a tube. heat 32 of greater length than that of the two battery stages, collectors 34 being provided at each stage.
• the heat pipes can be replaced by simple tubes made of a thermally conductive material and inside which circulates a forced air flow, for example an upstream air flow the suction of the compressor of a fuel cell coupled with battery packs of the invention.
• the tubes are connected to a cooling circuit of the type comprising a pump and a coolant reservoir.
• This variant illustrating the electrical connections of the two battery packs 1 is shown in Figure 5 with the cooling module omitted for clarity.
• the electrically conductive strip 50 is a metal sheet comprising longitudinal and transverse tabs making it possible to electrically connect the terminals of the eight batteries to one another.
• staged battery packs having an even (greater than or equal to two) or odd (greater than or equal to 3) number of stages.
• FIG. 6a schematically shows a battery pack 1 at the step of assembling the batteries 12 in the support 10, before the folding of the movable parts thereof.
• FIG. 9 illustrates an improved assembly comprising modules cooling units 30 inserted between the different unit battery blocks 200.
• FIG. 13 illustrates a set of staged battery blocks comprising two blocks each having four battery stages closing off on cooling modules 30.
• the heat pipes 32 of the cooling module 30 are introduced by separating the stepped blocks connected to the base by the electrically conductive member 70.
• the electrically conductive members maintain good thermal contact between the heat tubes and the batteries of the assembly.
• the performance of the cooling (in the case where all of the staged battery packs include cooling modules with heat pipes) will of course depend on its design but also on the ability of the assembly to guarantee good thermal contact between the individual coils and the heat collectors attached to the heat pipes.
• FIG. 15a illustrates an assembly 700 comprising three stages in position deployed and FIG. 15b the assembly 700 after folding of the movable parts of the supports 10. Cooling modules 30 can, of course, be inserted between the different rows of stepped batteries as previously described.
• the invention also makes it possible to produce, in a very simple manner, a pack comprising several staged battery packs, the general shape of which is not a simple parallelepiped. This finds its applications for example in the automotive field where a battery pack has a given thickness over a certain area (under the feet of the passengers) but where it has two or three floors elsewhere (under the seats of the passengers).
• the invention makes it possible to offer in an elegant and robust manner a pack which would have for example a block of three floors adjacent to a block of one floor or a block of two floors adjacent to a block of one floor extending by another one-story block which is adjacent to another two-story block.
• connection by a fuse element can be provided between each battery and the connection element of the support in order to be able to isolate a defective battery in a battery pack of the invention.
• a connection by a fuse element can be provided between each battery and the connection element of the support in order to be able to isolate a defective battery in a battery pack of the invention.

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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)
• Aviation & Aerospace Engineering (AREA)
• Life Sciences & Earth Sciences (AREA)
• Sustainable Development (AREA)
• Sustainable Energy (AREA)
• Power Engineering (AREA)
• Transportation (AREA)
• Mechanical Engineering (AREA)
• Connection Of Batteries Or Terminals (AREA)
• Battery Mounting, Suspending (AREA)

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• 2019
  • 2019-07-18 FR FR1908139A patent/FR3098999B1/fr not_active Expired - Fee Related
• 2020
  • 2020-07-16 US US17/627,978 patent/US20220278406A1/en not_active Abandoned
  • 2020-07-16 WO PCT/FR2020/051284 patent/WO2021009467A1/fr not_active Ceased
  • 2020-07-16 CN CN202080048133.XA patent/CN114051672B/zh active Active
  • 2020-07-16 EP EP20753986.7A patent/EP4000123A1/de not_active Withdrawn

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