EP4595151A1 - Device for regulating the temperature of battery cells - Google Patents

Device for regulating the temperature of battery cells

Info

Publication number
EP4595151A1
EP4595151A1 EP23808659.9A EP23808659A EP4595151A1 EP 4595151 A1 EP4595151 A1 EP 4595151A1 EP 23808659 A EP23808659 A EP 23808659A EP 4595151 A1 EP4595151 A1 EP 4595151A1
Authority
EP
European Patent Office
Prior art keywords
battery cells
casing
cavity
heat transfer
transfer medium
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
Application number
EP23808659.9A
Other languages
German (de)
French (fr)
Inventor
Tomás NOVÁCEK
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
N-SOLUTIONS S.R.O.
Original Assignee
Qoolers SRO
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 Qoolers SRO filed Critical Qoolers SRO
Publication of EP4595151A1 publication Critical patent/EP4595151A1/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • 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
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • 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
    • 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
    • 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
    • H01M50/505—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising a single busbar
    • 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
    • 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
    • H01M50/50—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

Definitions

  • the invention relates to a device for storing and regulating the temperature of a number of battery cells using a heat transfer medium, which solves the problems associated with the fixing and sealing of the individual elements of the device and the uneven cooling of the battery cells.
  • Lithium battery cells and in particular battery modules (batteries) composed of them, are a widely used source of long-life energy.
  • a disadvantage of lithium batteries is their high sensitivity to temperature changes and especially overheating, which causes fluctuations in battery capacity and performance, excessive discharge or overcharging of battery cells, and can eventually lead to short circuit and destruction of the entire battery module.
  • the document DE1020141 12628 A1 describes a cooling battery module that comprises a frame and two sealing plates through which battery cells are threaded, wherein a cooling liquid flows between the sealing plates.
  • the distance between the sealing plates and their mutual cohesion is ensured by a number of pads, which are attached to the sealing plates and the frame by screwed, glued, or welded connections.
  • Said arrangement comprises a number of auxiliary connecting elements that unnecessarily take up space between the battery cells and must be fixed by a large number of connections.
  • the position of the sealing plates is not ensured over their entire surface, but only at points, resulting in uneven protection of the sealing plates from the pressure of the cooling liquid.
  • the document JP2012009388 A describes a casing of battery cells cooled indirectly by means of cooling frames that are inserted between each row of battery cells and comprise conduction of cooling liquids.
  • a number of cooling frames are connected to the support frame with screws. This spatial arrangement is inefficient, as the cooling frames take up a large part of the internal space of the casing that could be filled by additional battery cells.
  • the cooling efficiency is small because the cooling by the cooling liquid does not occur by direct contact with the battery cells for most of their surface area, and the direction of the flowing of the cooling liquid is rigidly determined by the conduction of the cooling medium through a narrow channel.
  • a disadvantage of the above solutions is that the position of the battery cells and sealing elements in the device is ensured only at points or with the use of a large number of connections and auxiliary elements, wherein when placed in the device cavity these connecting and auxiliary elements unnecessarily take up space potentially usable for other battery cells. If the sealing elements and battery cells are not stabilised properly, they are unevenly stressed by the pressure of the cooling medium, wherein untightness or other failures may occur in the affected regions.
  • Another disadvantage of the prior state of the art is the lack of use of the heat exchanger structure for the structure of the casing of the battery cells, or for their protection and thermal insulation. Furthermore, there is no solution that would solve the above shortcomings at the same time as making it easier to assemble such a heat exchanger structure with a casing function.
  • a device for regulating the temperature of battery cells of the present invention wherein the device comprises a casing, a cover, a cavity inside the casing, at least one inlet of a heat transfer medium into the cavity, and at least one outlet of the heat transfer medium from the cavity, wherein the battery cells are located in the cavity and surrounded by the heat transfer medium.
  • the casing comprises a first side of the casing and a second side of the casing and the cavity has a mouth adjacent to the first side of the casing enclosed by the cover
  • the device further comprises an elastic plate that comprises a number of openings corresponding to the number of battery cells inside the cavity, where each battery cell passes through one opening and the cross-section of the openings in the elastic plate is as large or smaller than the cross-section of the battery cells
  • the cover comprises electrical conductors connected to the battery cells and is adjacent to the first side of the elastic plate, wherein the second side of the elastic plate is in contact with the heat transfer medium.
  • the rigid connection of the elastic plate to the cover and the casing of the device eliminates possible displacements of the battery cells and the elastic plate due to the pressure of the heat transfer medium, since the position of the elastic plate and the battery cells in the openings of the elastic plate is held by the cover over most of the surface area of the elastic plate.
  • the cavity of the device is fully utilised to store the battery cells, which are rigidly fixed between the casing and the cover and connected to the electrical conductors on the cover.
  • the device is optimised to store and safely regulate the temperature of a maximum number of battery cells in the cavity, wherein no additional reinforcing or connecting elements need to be used.
  • the device of the invention makes optimal use of its structure to provide thermal insulation and protection of the battery cells from external influences, thus fulfilling the functions of a full-fledged casing.
  • the device of the invention can be easily constructed.
  • the device for regulating the temperature of battery cells preferably comprises electrical conductors adjacent to an elastic plate, wherein the electrical conductors are part of the cover and the cover is composed only of components necessary for safe connection of the contacts of the battery cells. Said arrangement allows the electrical contacts to function as elements for fixing the position of the elastic plate, protecting the elastic plate, and closing the casing without the need for another component.
  • the device for regulating the temperature of battery cells preferably comprises an inlet of the heat transfer medium and an outlet of the heat transfer medium that are located on opposite sides of the casing, which contributes to even flowing of the heat transfer medium through the entire cavity of the device and cooling of the battery cells.
  • the device may comprise multiple such pairs of inlets and outlets of the heat transfer medium.
  • the casing of the device for regulating the temperature of battery cells preferably comprises at least one integrated channel connecting the cavity to the inlet of the heat transfer medium or the outlet of the heat transfer medium.
  • the casing of the device for regulating the temperature of battery cells preferably comprises one integrated channel connected to the inlet of the heat transfer medium and one integrated channel connected to the outlet of the heat transfer medium.
  • one integrated channel serves as the inlet and the other as the outlet.
  • the casing of the device for regulating the temperature of battery cells preferably comprises integrated channels in its circumferential lateral walls at a level between the first and second sides of the casing, wherein the integrated channels comprise penetrations into the cavity.
  • the integrated channels with penetrations regulate the direction of the flowing of the heat transfer medium to multiple battery cells in different parts of the cavity and at the same time the whole device is evenly reinforced.
  • the elastic plate is sandwiched between the cover and the first side of the casing around its circumference, wherein the cover is in contact with the first side of the casing, the first side of the elastic plate, and the battery cells.
  • the bottom of the device cavity preferably comprises hitches adapted to the shape of the battery cells for locking the battery cells in place, the spacing or connection of the battery cells to the casing. Fixing the battery cells to the casing of the device using shape elements increases the cohesion of the battery cells with the casing and reduces the risk of battery cell loosening or other failures due to the pressure of the flowing liquid.
  • the bottom of the cavity further preferably comprises a reinforcing element passing through the cavity and a corresponding opening in the elastic plate for rigid connection of the bottom of the cavity to the cover.
  • the reinforcing element further increases the cohesion of the cover with the casing.
  • Fig. 1 shows a view of the device for regulating the temperature of battery cells of the invention
  • Fig. 2 shows a longitudinal section of the device for regulating the temperature of battery cells of the invention
  • Fig. 3 shows a lateral view of the device for regulating the temperature of battery cells of the invention
  • Fig. 4 shows a top view of the device for regulating the temperature of battery cells of the invention
  • Fig. 5 shows a vertical cross section of the device for regulating the temperature of battery cells of the invention.
  • One example of an embodiment is the device 1 for regulating the temperature of battery cells 2 shown in Fig. 1 to 5.
  • the device 1 for regulating the temperature of battery cells 2 comprises an external casing 3 in the shape of a flat cuboid (Fig. 1 ) and a cavity 4 inside the casing 3, in which a number of battery cells 2 surrounded by a heat transfer medium 7 are located.
  • the inlet 5 of the heat transfer medium into the cavity 4 and the outlet 6 of the heat transfer medium from the cavity 4 are located symmetrically on opposite sides of the casing 3 in the centre of the circumferential lateral walls (Fig. 2 to 4).
  • the inlet and outlet 5,6 of the heat transfer medium means the passage of the heat transfer medium 7 into the cavity 4 of the device with an elongated mouth for connecting hoses that supply or discharge the heat transfer medium 7, which in this case is a cooling liquid.
  • the casing 3 of the device and both the inlet and outlet 5,6 of the heat transfer medium are made of polymers or polymer-, carbon- , or Kevlar-based composites. At the location where the electronic unit of the battery system is stored, the thickness of the wall of the casing 3 is reduced such that the electronic unit of the battery system can be cooled more efficiently.
  • the electronic unit of the battery system is the BMS (Battery Management System, balancer).
  • the casing 3 of the device comprises a first side 8 of the casing and a second side 9 of the casing, wherein the cavity 4 has a mouth 10 on the first side 8 of the casing closed by a cover 1 1 .
  • the bottom of the cavity 4 is located.
  • the casing 3 comprises in its circumferential lateral walls two L-shaped integrated channels 17, wherein each integrated channel 17 is part of two adjoining lateral walls of the casing 3.
  • One integrated channel 17 connects the cavity 4 to the inlet 5 of the heat transfer medium, and the second integrated channel 17 connects the cavity 4 to the outlet 5 of the heat transfer medium.
  • the integrated channels 17 have a rectangular cross-section, wherein the height of the cross-section is equal to the height of the cavity 4 between the first and second sides 8,9 of the casing, and the width of the cross-section is approximately equal to the diameter of the opening of the inlet and outlet 5,6 of the heat transfer medium.
  • Each integrated channel 17 comprises penetrations 18 in its wall, which are oriented in the space of the cavity 4 between the battery cells 2.
  • Each integrated channel 17 in this embodiment comprises 10 penetrations 18 evenly spaced along the entire length of the integrated channel 17.
  • the integrated channel 15 connected to the inlet 5 of the heat transfer medium and the integrated channel 17 connected to the outlet 6 of the heat transfer medium are separated from each other.
  • the embodiment of the integrated channels 17 is shown in sections of the device 1 in Fig. 2 and 5.
  • the device 1 comprises a total of 100 vertically oriented cylindrical battery cells 2 that are arranged in 10 rows of 10 battery cells 2 in the cavity 4 as can be seen in Fig. 2.
  • the battery cells 2 directly abut the bottom of the cavity 4 adjacent to the second side 9 of the casing, wherein the bottom of the cavity 4 comprises hitches 19 adapted to the shape of the battery cells for locking the battery cells 2 in place.
  • the hitches 19 are thus adapted to a precise placement and fixation of the position of the battery cells 2 relative to the casing 3.
  • they are flat depressions at the bottom of the cavity 4 in the shape of a circle corresponding to the external shape of the battery cells 2, wherein the battery cells 2 are seated in these depressions and rigidly connected to the casing 3.
  • the battery cells 2 are arranged in close proximity to each other, but with a spacing allowing the flowing of the heat transfer medium 7 surrounding the battery cells 2.
  • the battery cells 2 comprise an electrical insulation at the location of contact with the heat transfer medium 7, and the two contacts (poles) of the battery cells 2 are located closer to the mouth 10 of the cavity on the first side 8 of the casing (on the top side of the battery cells 2).
  • An elastic plate 12 is seated on the casing 3 of the device and the number of battery cells 2 at the level of the mouth 10 of the cavity.
  • the elastic plate 12 comprises a number of openings 13 corresponding to the number of battery cells 2, wherein the arrangement of the openings 13 in the elastic plate 12 is analogous to the arrangement of the hitches 19 at the bottom of the cavity 4 of the device and each battery cell 2 passes through one opening 13 of the elastic plate.
  • the elastic plate 12 is made of a flexible elastomeric material possibly reinforced with textile fibres, wherein to ensure compression and tightness of the elastic plate 12 around the battery cells 2, the diameter of the openings 13 in the elastic plate 12 is smaller than the external diameter of the battery cells 2.
  • the cover 1 1 is seated, wherein the first side 15 of the elastic plate is adjacent to the cover 1 1 and the second side 16 of the elastic plate is in contact with the heat transfer medium 7 that fills the space of the cavity 4 around the battery cells 2.
  • the elastic plate 12 is also partially adjacent with its second side 16 to the first side 8 of the casing, wherein it is sandwiched along its circumference between the first side 8 of the casing and the cover 1 1 .
  • the sandwiching of the elastic plate 12 between the cover 12 and the first side 8 of the casing is located on the walls of the integrated channels 17, as can be seen in Fig. 5.
  • the rigid connection of the cover 1 1 to the casing 3 is provided by a pressed, screwed, glued, or welded connection, wherein the surface connection of the cover 1 1 to both the elastic plate 12 and the casing 3 helps to maintain the pressure on the elastic plate 12, its position, and its sealing ability.
  • the cover 1 1 adjacent to the first side 15 of the elastic plate is, in the first exemplary embodiment, composed of 3 rigidly connected pieces comprising a carrier 20 and further two electrically conductive and mutually separated (insulated) switchboards 21 to which the electrical conductors 14 are connected.
  • the carrier 20 is made of a non-conductive material (polymer) in the form of a plate that is adjacent to the first side 15 of the elastic plate, the battery cells 2, and, along its circumference, also to the casing 3.
  • two switchboards 21 with electrical conductors 14 are adjacent to the carrier 20, wherein the carrier 20 isolates these switchboards 21 from direct contact with the battery cells 2.
  • Both switchboards 21 with electrical conductors 14 are electrically conductive metallic shaped elements (see Fig.
  • one switchboard 21 comprises electrical conductors 14 connected to the positive poles of the battery cells 2 and the other switchboard 21 comprises electrical conductors 14 connected to the negative poles of the battery cells 2, wherein one of the poles (contacts) is located in the centre of the battery cell 2 and the other of the poles is located on the edge of the battery cell 2.
  • the connections of the electrical conductors 14 to the contacts of the battery cells 2 are made, e.g., by point welding, soldering, or mechanical connection, wherein the electrical conductor 14 is connected to at least one contact of the battery cell 2 by a fuse wire that serves as a fuse in case of a short circuit of the battery cell 2.
  • the electrical conductors 14 connecting the switchboard 21 to the contacts of the electrical cells 2 are routed through the cutouts in the carrier 20 of the cover (seen in the section in Fig. 5), wherein a secondary function of the metallic switchboards 21 is to reinforce the entire cover 1 1 .
  • All rigid connections of the elements of the device 1, e.g., the connection of the battery cells 2 to the hitches 19 on the bottom of the cavity 4, or of the cover 1 1 to the casing 3 of the device, are made as pressed, screwed, glued, welded, shape, or mechanical connections.
  • the casing 3 of the device may be made of other composite materials and reinforced with metallic inserts or ribs. Alternatively, it can be made of metals or their alloys and subsequently provided with insulation.
  • the casing 3 can be of any shape, e.g., a cuboid, a prism, or a cylinder.
  • the device 1 may comprise both an inlet and an outlet 5,6 of the heat transfer medium on one (the same) side of the casing 3, including the first side 8 of the casing.
  • it may comprise two inlets 5 of the heat transfer medium and two outlets 6 of the heat transfer medium, wherein one inlet 5 of the heat transfer medium and one outlet 6 of the heat transfer medium are located on each of the two opposite sides of the device 1.
  • the outlet 6 of the heat transfer medium may be designed only as an outlet opening or outlet chamber without connection to the integrated channel 17.
  • Parameters of the integrated channels 17 such as the diameter of the integrated channel 17, the number of penetrations 18, or the size of the penetrations 18 can be adapted in terms of the direction, velocity, and pressure of the heat transfer medium 7 during the flowing through the device T
  • the inlet and outlet 5,6 of the heat transfer medium, or more generally the casing 3 of the device, may comprise a temperature or pressure sensor or a bleed valve.
  • the cover 1 1 may comprise only 2 electrically insulated switchboards 21 without the carrier 20, wherein the switchboards 21 directly abut the casing 3 and the first side 15 of the elastic plate and the electrical insulation of both switchboards 21 is provided by the shaping of the elastic plate 12.
  • the electrical conductors 14 may also be a direct part of the metallic moulding of the switchboard 1 1 as protrusions of this moulding, which are connected at points to the poles of the battery cells 2.
  • An alternative embodiment of the hitches 19 on the bottom of the cavity 4 may comprise, in addition to the shaped depressions, grooves or, conversely, projections which project above the level of the bottom of the cavity 4 and between which the battery cells 2 are rigidly seated.
  • the bottom of the cavity 4 may comprise one or more reinforcing elements passing through the cavity 4 and corresponding openings in the elastic plate 12 for rigidly connecting the bottom of the cavity 4 to the cover 1 1 .
  • This reinforcing element may also replace 1 or more battery cells 2, in particular at locations where it is desirable to increase the cohesion of the cover 1 1 with the casing 3.
  • the cavity 4 of the device may also comprise a mouth 10 on the second side 9 of the casing.
  • the casing 3 of the device comprises only the circumferential lateral walls and the device 1 comprises two elastic plates 12 and two covers 1 1 , wherein one elastic plate 12 is adjacent to the casing 3 and the battery cells 2 from the first side 8 of the casing and the second elastic plate 12 is adjacent to the casing 3 and the battery cells 2 from the second side 9 of the casing.
  • the cover 1 1 is then adjacent to each of the elastic plates 12, wherein the electrical conductors 14 may be located on only one of the two covers 1 1 or on both covers 1 1 depending on the orientation of the contacts of the battery cells 2.
  • the battery cells 2 and the heat transfer medium 7 surrounding the battery cells 2 are sandwiched between the two elastic plates 12 and the covers 11 .
  • the above described device can further be used for entire systems of units for regulating the temperature of battery cells.

Landscapes

  • 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)

Abstract

The object of the invention is a device (1 ) for regulating the temperature of battery cells (2) comprising a casing (3), a cover (11), a cavity (4) inside the casing (3), at least one inlet (5) of a heat transfer medium into the cavity (4) and at least one outlet (6) of the heat transfer medium from the cavity (4), wherein at least 3 battery cells (2) are located in the cavity (4) and surrounded by the heat transfer medium (7), wherein the casing (3) comprises a first side (8) of the casing and a second side (9) of the casing and the cavity (4) has a mouth (10) adjacent to the first side (8) of the casing closed by the cover (11). The device further comprises an elastic plate (12), wherein the elastic plate (12) comprises a number of openings (13) corresponding to the number of battery cells (2) inside the cavity (4), where each battery cell (2) passes through one opening (13) and the cross-section of the openings (13) in the elastic plate (12) is as large as or smaller than the cross-section of the battery cells (2), wherein the cover (11) comprises electrical conductors (14) connected to the battery cells (2) and is adjacent to the first side (15) of the elastic plate, wherein the second side (16) of the elastic plate is in contact with the heat transfer medium (7).

Description

Device for regulating the temperature of battery cells
Technical Field
The invention relates to a device for storing and regulating the temperature of a number of battery cells using a heat transfer medium, which solves the problems associated with the fixing and sealing of the individual elements of the device and the uneven cooling of the battery cells.
Background of the Invention
Lithium battery cells, and in particular battery modules (batteries) composed of them, are a widely used source of long-life energy. A disadvantage of lithium batteries is their high sensitivity to temperature changes and especially overheating, which causes fluctuations in battery capacity and performance, excessive discharge or overcharging of battery cells, and can eventually lead to short circuit and destruction of the entire battery module.
In the current state of the art, units for storing battery cells that are cooled by the flowing of a cooling medium are known. In the document EP3363061 B1 is described a device comprising two sealing grids strung on battery cells, wherein a cooling liquid flows between the sealing grids and a circumferential frame. A disadvantage of this solution is the lack of protection of the sealing grids and battery cells from movement due to the pressure of the cooling liquid, wherein the position of the battery cells is not otherwise fixed.
The document DE1020141 12628 A1 describes a cooling battery module that comprises a frame and two sealing plates through which battery cells are threaded, wherein a cooling liquid flows between the sealing plates. The distance between the sealing plates and their mutual cohesion is ensured by a number of pads, which are attached to the sealing plates and the frame by screwed, glued, or welded connections. Said arrangement comprises a number of auxiliary connecting elements that unnecessarily take up space between the battery cells and must be fixed by a large number of connections. In addition, the position of the sealing plates is not ensured over their entire surface, but only at points, resulting in uneven protection of the sealing plates from the pressure of the cooling liquid.
The document JP2012009388 A describes a casing of battery cells cooled indirectly by means of cooling frames that are inserted between each row of battery cells and comprise conduction of cooling liquids. A number of cooling frames are connected to the support frame with screws. This spatial arrangement is inefficient, as the cooling frames take up a large part of the internal space of the casing that could be filled by additional battery cells. The cooling efficiency is small because the cooling by the cooling liquid does not occur by direct contact with the battery cells for most of their surface area, and the direction of the flowing of the cooling liquid is rigidly determined by the conduction of the cooling medium through a narrow channel.
A disadvantage of the above solutions is that the position of the battery cells and sealing elements in the device is ensured only at points or with the use of a large number of connections and auxiliary elements, wherein when placed in the device cavity these connecting and auxiliary elements unnecessarily take up space potentially usable for other battery cells. If the sealing elements and battery cells are not stabilised properly, they are unevenly stressed by the pressure of the cooling medium, wherein untightness or other failures may occur in the affected regions. Another disadvantage of the prior state of the art is the lack of use of the heat exchanger structure for the structure of the casing of the battery cells, or for their protection and thermal insulation. Furthermore, there is no solution that would solve the above shortcomings at the same time as making it easier to assemble such a heat exchanger structure with a casing function. of the Invention
The above shortcomings are to some extent eliminated by a device for regulating the temperature of battery cells of the present invention, wherein the device comprises a casing, a cover, a cavity inside the casing, at least one inlet of a heat transfer medium into the cavity, and at least one outlet of the heat transfer medium from the cavity, wherein the battery cells are located in the cavity and surrounded by the heat transfer medium. The casing comprises a first side of the casing and a second side of the casing and the cavity has a mouth adjacent to the first side of the casing enclosed by the cover, wherein the device further comprises an elastic plate that comprises a number of openings corresponding to the number of battery cells inside the cavity, where each battery cell passes through one opening and the cross-section of the openings in the elastic plate is as large or smaller than the cross-section of the battery cells, wherein the cover comprises electrical conductors connected to the battery cells and is adjacent to the first side of the elastic plate, wherein the second side of the elastic plate is in contact with the heat transfer medium.
The rigid connection of the elastic plate to the cover and the casing of the device eliminates possible displacements of the battery cells and the elastic plate due to the pressure of the heat transfer medium, since the position of the elastic plate and the battery cells in the openings of the elastic plate is held by the cover over most of the surface area of the elastic plate. The cavity of the device is fully utilised to store the battery cells, which are rigidly fixed between the casing and the cover and connected to the electrical conductors on the cover. The device is optimised to store and safely regulate the temperature of a maximum number of battery cells in the cavity, wherein no additional reinforcing or connecting elements need to be used. At the same time, the device of the invention makes optimal use of its structure to provide thermal insulation and protection of the battery cells from external influences, thus fulfilling the functions of a full-fledged casing. Moreover, the device of the invention can be easily constructed.
The device for regulating the temperature of battery cells preferably comprises electrical conductors adjacent to an elastic plate, wherein the electrical conductors are part of the cover and the cover is composed only of components necessary for safe connection of the contacts of the battery cells. Said arrangement allows the electrical contacts to function as elements for fixing the position of the elastic plate, protecting the elastic plate, and closing the casing without the need for another component.
The device for regulating the temperature of battery cells preferably comprises an inlet of the heat transfer medium and an outlet of the heat transfer medium that are located on opposite sides of the casing, which contributes to even flowing of the heat transfer medium through the entire cavity of the device and cooling of the battery cells. The device may comprise multiple such pairs of inlets and outlets of the heat transfer medium.
The casing of the device for regulating the temperature of battery cells preferably comprises at least one integrated channel connecting the cavity to the inlet of the heat transfer medium or the outlet of the heat transfer medium. An advantage of the integrated channel in the device cavity is the directing of the flow of the heat transfer medium in the selected direction, wherein the secondary function of the integrated channel is the function of reinforcement, which would otherwise have to be performed by additional elements in the device cavity, e.g., reinforcing ribs, which unnecessarily take up space in the cavity.
The casing of the device for regulating the temperature of battery cells preferably comprises one integrated channel connected to the inlet of the heat transfer medium and one integrated channel connected to the outlet of the heat transfer medium. In the case of an embodiment of the casing with two integrated channels, regulation of the flowing of the heat transfer medium at the inlet and outlet is achieved, as one integrated channel serves as the inlet and the other as the outlet.
The casing of the device for regulating the temperature of battery cells preferably comprises integrated channels in its circumferential lateral walls at a level between the first and second sides of the casing, wherein the integrated channels comprise penetrations into the cavity. The integrated channels with penetrations regulate the direction of the flowing of the heat transfer medium to multiple battery cells in different parts of the cavity and at the same time the whole device is evenly reinforced.
In a preferred embodiment, the elastic plate is sandwiched between the cover and the first side of the casing around its circumference, wherein the cover is in contact with the first side of the casing, the first side of the elastic plate, and the battery cells. By sandwiching the elastic plate between the casing and the cover around its entire circumference, implementation of point connections between the cover, elastic plate, and casing is eliminated.
The bottom of the device cavity preferably comprises hitches adapted to the shape of the battery cells for locking the battery cells in place, the spacing or connection of the battery cells to the casing. Fixing the battery cells to the casing of the device using shape elements increases the cohesion of the battery cells with the casing and reduces the risk of battery cell loosening or other failures due to the pressure of the flowing liquid.
The bottom of the cavity further preferably comprises a reinforcing element passing through the cavity and a corresponding opening in the elastic plate for rigid connection of the bottom of the cavity to the cover. The reinforcing element further increases the cohesion of the cover with the casing.
Clarification of the Drawings
A summary of the invention is further clarified by example embodiments thereof, which are described using the accompanying drawings, in which:
Fig. 1 shows a view of the device for regulating the temperature of battery cells of the invention,
Fig. 2 shows a longitudinal section of the device for regulating the temperature of battery cells of the invention,
Fig. 3 shows a lateral view of the device for regulating the temperature of battery cells of the invention,
Fig. 4 shows a top view of the device for regulating the temperature of battery cells of the invention,
Fig. 5 shows a vertical cross section of the device for regulating the temperature of battery cells of the invention. Exemplary Embodiments of the Invention
The invention will be further clarified by example embodiments with reference to the respective drawings. One example of an embodiment is the device 1 for regulating the temperature of battery cells 2 shown in Fig. 1 to 5.
The device 1 for regulating the temperature of battery cells 2 comprises an external casing 3 in the shape of a flat cuboid (Fig. 1 ) and a cavity 4 inside the casing 3, in which a number of battery cells 2 surrounded by a heat transfer medium 7 are located. The inlet 5 of the heat transfer medium into the cavity 4 and the outlet 6 of the heat transfer medium from the cavity 4 are located symmetrically on opposite sides of the casing 3 in the centre of the circumferential lateral walls (Fig. 2 to 4). The inlet and outlet 5,6 of the heat transfer medium means the passage of the heat transfer medium 7 into the cavity 4 of the device with an elongated mouth for connecting hoses that supply or discharge the heat transfer medium 7, which in this case is a cooling liquid. The casing 3 of the device and both the inlet and outlet 5,6 of the heat transfer medium are made of polymers or polymer-, carbon- , or Kevlar-based composites. At the location where the electronic unit of the battery system is stored, the thickness of the wall of the casing 3 is reduced such that the electronic unit of the battery system can be cooled more efficiently. The electronic unit of the battery system is the BMS (Battery Management System, balancer).
The casing 3 of the device comprises a first side 8 of the casing and a second side 9 of the casing, wherein the cavity 4 has a mouth 10 on the first side 8 of the casing closed by a cover 1 1 . On the opposite side from the mouth 10 of the cavity, that is, closer to the second side 9 of the casing, in this exemplary embodiment, the bottom of the cavity 4 is located. The casing 3 comprises in its circumferential lateral walls two L-shaped integrated channels 17, wherein each integrated channel 17 is part of two adjoining lateral walls of the casing 3. One integrated channel 17 connects the cavity 4 to the inlet 5 of the heat transfer medium, and the second integrated channel 17 connects the cavity 4 to the outlet 5 of the heat transfer medium. The integrated channels 17 have a rectangular cross-section, wherein the height of the cross-section is equal to the height of the cavity 4 between the first and second sides 8,9 of the casing, and the width of the cross-section is approximately equal to the diameter of the opening of the inlet and outlet 5,6 of the heat transfer medium. Each integrated channel 17 comprises penetrations 18 in its wall, which are oriented in the space of the cavity 4 between the battery cells 2. Each integrated channel 17 in this embodiment comprises 10 penetrations 18 evenly spaced along the entire length of the integrated channel 17. The integrated channel 15 connected to the inlet 5 of the heat transfer medium and the integrated channel 17 connected to the outlet 6 of the heat transfer medium are separated from each other. The embodiment of the integrated channels 17 is shown in sections of the device 1 in Fig. 2 and 5.
In the first exemplary embodiment, the device 1 comprises a total of 100 vertically oriented cylindrical battery cells 2 that are arranged in 10 rows of 10 battery cells 2 in the cavity 4 as can be seen in Fig. 2. The battery cells 2 directly abut the bottom of the cavity 4 adjacent to the second side 9 of the casing, wherein the bottom of the cavity 4 comprises hitches 19 adapted to the shape of the battery cells for locking the battery cells 2 in place. The hitches 19 are thus adapted to a precise placement and fixation of the position of the battery cells 2 relative to the casing 3. In the first exemplary embodiment, they are flat depressions at the bottom of the cavity 4 in the shape of a circle corresponding to the external shape of the battery cells 2, wherein the battery cells 2 are seated in these depressions and rigidly connected to the casing 3. The battery cells 2 are arranged in close proximity to each other, but with a spacing allowing the flowing of the heat transfer medium 7 surrounding the battery cells 2. The battery cells 2 comprise an electrical insulation at the location of contact with the heat transfer medium 7, and the two contacts (poles) of the battery cells 2 are located closer to the mouth 10 of the cavity on the first side 8 of the casing (on the top side of the battery cells 2).
An elastic plate 12 is seated on the casing 3 of the device and the number of battery cells 2 at the level of the mouth 10 of the cavity. The elastic plate 12 comprises a number of openings 13 corresponding to the number of battery cells 2, wherein the arrangement of the openings 13 in the elastic plate 12 is analogous to the arrangement of the hitches 19 at the bottom of the cavity 4 of the device and each battery cell 2 passes through one opening 13 of the elastic plate. The elastic plate 12 is made of a flexible elastomeric material possibly reinforced with textile fibres, wherein to ensure compression and tightness of the elastic plate 12 around the battery cells 2, the diameter of the openings 13 in the elastic plate 12 is smaller than the external diameter of the battery cells 2.
Directly on the elastic plate 12 the cover 1 1 is seated, wherein the first side 15 of the elastic plate is adjacent to the cover 1 1 and the second side 16 of the elastic plate is in contact with the heat transfer medium 7 that fills the space of the cavity 4 around the battery cells 2. The elastic plate 12 is also partially adjacent with its second side 16 to the first side 8 of the casing, wherein it is sandwiched along its circumference between the first side 8 of the casing and the cover 1 1 . The sandwiching of the elastic plate 12 between the cover 12 and the first side 8 of the casing is located on the walls of the integrated channels 17, as can be seen in Fig. 5. The rigid connection of the cover 1 1 to the casing 3 is provided by a pressed, screwed, glued, or welded connection, wherein the surface connection of the cover 1 1 to both the elastic plate 12 and the casing 3 helps to maintain the pressure on the elastic plate 12, its position, and its sealing ability.
The cover 1 1 adjacent to the first side 15 of the elastic plate is, in the first exemplary embodiment, composed of 3 rigidly connected pieces comprising a carrier 20 and further two electrically conductive and mutually separated (insulated) switchboards 21 to which the electrical conductors 14 are connected. The carrier 20 is made of a non-conductive material (polymer) in the form of a plate that is adjacent to the first side 15 of the elastic plate, the battery cells 2, and, along its circumference, also to the casing 3. On the opposite side from the elastic plate 12, two switchboards 21 with electrical conductors 14 are adjacent to the carrier 20, wherein the carrier 20 isolates these switchboards 21 from direct contact with the battery cells 2. Both switchboards 21 with electrical conductors 14 are electrically conductive metallic shaped elements (see Fig. 4), wherein one switchboard 21 comprises electrical conductors 14 connected to the positive poles of the battery cells 2 and the other switchboard 21 comprises electrical conductors 14 connected to the negative poles of the battery cells 2, wherein one of the poles (contacts) is located in the centre of the battery cell 2 and the other of the poles is located on the edge of the battery cell 2. The connections of the electrical conductors 14 to the contacts of the battery cells 2 are made, e.g., by point welding, soldering, or mechanical connection, wherein the electrical conductor 14 is connected to at least one contact of the battery cell 2 by a fuse wire that serves as a fuse in case of a short circuit of the battery cell 2. The electrical conductors 14 connecting the switchboard 21 to the contacts of the electrical cells 2 are routed through the cutouts in the carrier 20 of the cover (seen in the section in Fig. 5), wherein a secondary function of the metallic switchboards 21 is to reinforce the entire cover 1 1 .
All rigid connections of the elements of the device 1, e.g., the connection of the battery cells 2 to the hitches 19 on the bottom of the cavity 4, or of the cover 1 1 to the casing 3 of the device, are made as pressed, screwed, glued, welded, shape, or mechanical connections.
In an alternative embodiment, the casing 3 of the device may be made of other composite materials and reinforced with metallic inserts or ribs. Alternatively, it can be made of metals or their alloys and subsequently provided with insulation. The casing 3 can be of any shape, e.g., a cuboid, a prism, or a cylinder.
In an alternative embodiment, the device 1 may comprise both an inlet and an outlet 5,6 of the heat transfer medium on one (the same) side of the casing 3, including the first side 8 of the casing. In another embodiment, it may comprise two inlets 5 of the heat transfer medium and two outlets 6 of the heat transfer medium, wherein one inlet 5 of the heat transfer medium and one outlet 6 of the heat transfer medium are located on each of the two opposite sides of the device 1. The outlet 6 of the heat transfer medium may be designed only as an outlet opening or outlet chamber without connection to the integrated channel 17. Parameters of the integrated channels 17 such as the diameter of the integrated channel 17, the number of penetrations 18, or the size of the penetrations 18 can be adapted in terms of the direction, velocity, and pressure of the heat transfer medium 7 during the flowing through the device T The inlet and outlet 5,6 of the heat transfer medium, or more generally the casing 3 of the device, may comprise a temperature or pressure sensor or a bleed valve.
In an alternative embodiment of the cover 1 1 , the cover 1 1 may comprise only 2 electrically insulated switchboards 21 without the carrier 20, wherein the switchboards 21 directly abut the casing 3 and the first side 15 of the elastic plate and the electrical insulation of both switchboards 21 is provided by the shaping of the elastic plate 12. The electrical conductors 14 may also be a direct part of the metallic moulding of the switchboard 1 1 as protrusions of this moulding, which are connected at points to the poles of the battery cells 2.
An alternative embodiment of the hitches 19 on the bottom of the cavity 4 may comprise, in addition to the shaped depressions, grooves or, conversely, projections which project above the level of the bottom of the cavity 4 and between which the battery cells 2 are rigidly seated.
In an alternative embodiment, the bottom of the cavity 4 may comprise one or more reinforcing elements passing through the cavity 4 and corresponding openings in the elastic plate 12 for rigidly connecting the bottom of the cavity 4 to the cover 1 1 . This reinforcing element may also replace 1 or more battery cells 2, in particular at locations where it is desirable to increase the cohesion of the cover 1 1 with the casing 3.
In another embodiment of the device 1 of the present invention, the cavity 4 of the device may also comprise a mouth 10 on the second side 9 of the casing. Thus, in this embodiment, the casing 3 of the device comprises only the circumferential lateral walls and the device 1 comprises two elastic plates 12 and two covers 1 1 , wherein one elastic plate 12 is adjacent to the casing 3 and the battery cells 2 from the first side 8 of the casing and the second elastic plate 12 is adjacent to the casing 3 and the battery cells 2 from the second side 9 of the casing. The cover 1 1 is then adjacent to each of the elastic plates 12, wherein the electrical conductors 14 may be located on only one of the two covers 1 1 or on both covers 1 1 depending on the orientation of the contacts of the battery cells 2. In this embodiment, the battery cells 2 and the heat transfer medium 7 surrounding the battery cells 2 are sandwiched between the two elastic plates 12 and the covers 11 . Industrial Applicability
The above described device can further be used for entire systems of units for regulating the temperature of battery cells.
List of Reference Numerals
1 - device
2 - battery cell
3 - casing
4 - cavity
5 - inlet of the heat transfer medium
6 - outlet of the heat transfer medium
7 - heat transfer medium
8 - first side of the casing
9 - second side of the casing
10 - mouth of the cavity
11 - cover
12 - elastic plate
13 - opening
14 - electrical conductor
15 - first side of the elastic plate
16 - second side of the elastic plate
17 - integrated channel
18 - penetration
19 - shape element
20 - carrier
21 - switchboard

Claims

1. A device (1 ) for regulating the temperature of battery cells (2) comprising a casing (3), a cover (11 ), a cavity (4) inside the casing (3), at least one inlet (5) of a heat transfer medium into the cavity (4), and at least one outlet (6) of the heat transfer medium from the cavity (4), wherein at least 3 battery cells (2) are located in the cavity (4) and surrounded by the heat transfer medium (7), wherein the casing (3) comprises a first side (8) of the casing and a second side (9) of the casing and the cavity (4) has a mouth (10) on the first side (8) of the casing closed by the cover (1 1 ), characterised in that it further comprises an elastic plate (12), wherein the elastic plate (12) comprises a number of openings (13) corresponding to the number of battery cells (2) inside the cavity (4), where each battery cell (2) passes through one opening (13) and the cross-section of the openings (13) in the elastic plate (12) is as large or smaller than the cross-section of the battery cells (2), wherein the cover (1 1 ) comprises electrical conductors (14) connected to the battery cells (2) and is adjacent to the first side (15) of the elastic plate, wherein the second side (16) of the elastic plate is in contact with the heat transfer medium (7).
2. The device (1 ) for regulating the temperature of battery cells (2) of claim 1 , characterised in that the electrical conductors (14) are adjacent to the elastic plate (12).
3. The device (1 ) for regulating the temperature of battery cells (2) of claims 1 to 2, characterised in that it comprises the inlet (5) of the heat transfer medium and the outlet (6) of the heat transfer medium, which are located on opposite sides of the casing (3).
4. The device (1 ) for regulating the temperature of battery cells (2) of claims 1 to 3, characterised in that the casing (3) comprises at least one integrated channel (17) connecting the cavity (4) to the inlet (5) of the heat transfer medium or the outlet (6) of the heat transfer medium.
5. The device (1 ) for regulating the temperature of battery cells (2) of claim 4, characterised in that the casing (3) comprises one integrated channel (17) connected to the inlet (5) of the heat transfer medium and one integrated channel (17) connected to the outlet (6) of the heat transfer medium. The device (1 ) for regulating the temperature of battery cells (2) of claim 5, characterised in that the casing (3) comprises integrated channels (17) in its circumferential lateral walls at a level between the first and second sides (8,9) of the casing, wherein the integrated channels (15) comprise penetrations (18) into the cavity (4). The device (1 ) for regulating the temperature of battery cells (2) of claims 1 to 6, characterised in that the elastic plate (12) is at least partially deformed along its circumference between the cover (1 1 ) and the first side (8) of the casing. The device (1 ) for regulating the temperature of battery cells (2) of claims 1 to 7, characterised in that the bottom of the cavity (4) comprises hitches (19) adapted to the shape of the battery cell (2) for locking the battery cells (2) in place. The device (1 ) for regulating the temperature of battery cells (2) of claims 1 to 8, characterised in that the bottom of the cavity (4) comprises a reinforcing element passing through the cavity (4) and a corresponding opening in the elastic plate (12) for rigidly connecting the bottom of the cavity (4) to the cover (1 1 ).
EP23808659.9A 2022-09-29 2023-09-26 Device for regulating the temperature of battery cells Pending EP4595151A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CZ2022-413A CZ2022413A3 (en) 2022-09-29 2022-09-29 Device for regulating the temperature of battery cells
PCT/CZ2023/050061 WO2024067894A1 (en) 2022-09-29 2023-09-26 Device for regulating the temperature of battery cells

Publications (1)

Publication Number Publication Date
EP4595151A1 true EP4595151A1 (en) 2025-08-06

Family

ID=88839241

Family Applications (1)

Application Number Title Priority Date Filing Date
EP23808659.9A Pending EP4595151A1 (en) 2022-09-29 2023-09-26 Device for regulating the temperature of battery cells

Country Status (4)

Country Link
EP (1) EP4595151A1 (en)
CN (1) CN120303813A (en)
CZ (1) CZ2022413A3 (en)
WO (1) WO2024067894A1 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110293986A1 (en) * 2009-11-25 2011-12-01 Katsumi Kozu Battery module
KR102711971B1 (en) * 2018-10-08 2024-10-02 삼성에스디아이 주식회사 Battery pack
WO2021222743A1 (en) * 2020-04-30 2021-11-04 Electric Era Technologies Inc. Battery module

Also Published As

Publication number Publication date
CZ2022413A3 (en) 2024-04-10
CN120303813A (en) 2025-07-11
WO2024067894A1 (en) 2024-04-04

Similar Documents

Publication Publication Date Title
EP4007042B1 (en) Upper part cooling-type battery pack
US11355800B2 (en) Battery pack
KR102437552B1 (en) Mechanical and Thermal Systems for Modular Batteries with Power Electronics Components
US20220278389A1 (en) Battery pack incorporating battery module and rigid beam and adopting reverse assembling
US8173294B2 (en) High voltage modular battery with electrically-insulated cell module and interconnector peripheries
EP3182483B1 (en) Battery pack
KR101854717B1 (en) Battery module including a cooling plate and manufacturing method the same cooling plate
US10587020B2 (en) Battery pack and encapsulated interconnection for a battery pack
EP3506383B1 (en) Battery module
KR20190131415A (en) Battery Pack comprising a Frame Profile with Integral Coolant Circuit Elements
EP3309858B1 (en) Battery module carrier, battery system and use of a modified h-beam as battery module carrier
EP2595213B1 (en) Pack case having a novel structure
KR101806417B1 (en) Unit Cell Pack Of Energy Storage System
US10068714B2 (en) Energy storage module comprising a plurality of energy storage assemblies
EP3528313B1 (en) Vehicular battery pack
CN110021789A (en) Switchable battery module and battery and vehicle including the battery module
JP6338905B2 (en) Battery system
US10177354B2 (en) Energy storage device having improved thermal performance
EP4595151A1 (en) Device for regulating the temperature of battery cells
EP3514004B1 (en) Battery module and battery pack including same
US12418063B2 (en) Heated battery module
WO2025237524A1 (en) Battery module with heat exchanger housing for immersion cooling
CN121688317A (en) Battery modules, trays, cell brackets and batteries
KR20260053699A (en) Battery device
KR20250137386A (en) End plate for batery frame and battery module and battery pack having the same

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20250425

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: N-SOLUTIONS S.R.O.