WO2019190385A1 - Module de batterie - Google Patents

Module de batterie Download PDF

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Publication number
WO2019190385A1
WO2019190385A1 PCT/SE2019/050276 SE2019050276W WO2019190385A1 WO 2019190385 A1 WO2019190385 A1 WO 2019190385A1 SE 2019050276 W SE2019050276 W SE 2019050276W WO 2019190385 A1 WO2019190385 A1 WO 2019190385A1
Authority
WO
WIPO (PCT)
Prior art keywords
row
battery
battery cells
plates
battery module
Prior art date
Application number
PCT/SE2019/050276
Other languages
English (en)
Inventor
Magnus Torell
Original Assignee
Alelion Energy Systems Ab
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 Alelion Energy Systems Ab filed Critical Alelion Energy Systems Ab
Priority to EP19775495.5A priority Critical patent/EP3776690A4/fr
Publication of WO2019190385A1 publication Critical patent/WO2019190385A1/fr

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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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • 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
    • 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
    • B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
    • B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • 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
    • B60L2200/00—Type of vehicles
    • B60L2200/40—Working vehicles
    • B60L2200/42—Fork lift trucks
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/425—Structural combination with electronic components, e.g. electronic circuits integrated to the outside of the casing
    • H01M2010/4271—Battery management systems including electronic circuits, e.g. control of current or voltage to keep battery in healthy state, cell balancing
    • 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
    • H01M50/271—Lids or covers for the racks or secondary casings
    • H01M50/273—Lids or covers for the racks or secondary casings characterised by the material
    • H01M50/278—Organic material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
    • H01M50/509—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the type of connection, e.g. mixed connections
    • H01M50/51—Connection only in series
    • 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

  • This invention relates to a battery module comprising a plurality of prismatic battery cells having two opposite main sides and being arranged side by side in a row with the main sides facing each other.
  • the invention also relates to a method of manufacturing such a battery module.
  • a power source in the form of a rechargeable electric energy storage device comprising a plurality of battery cells, often referred to as a battery module or simply battery.
  • a battery module or simply battery.
  • Several battery modules may be connected together so as to form what is often referred to as a battery pack.
  • a battery module often includes a number of prismatic battery cells arranged in a row or stack and a box or an arrangement of plates used to hold the cells in place.
  • Electronic components for controlling the cells such as a battery management system (BMS) are often included in the battery module or pack. Examples of battery modules/packs are disclosed in US2012/0115004 and US2010/0073005.
  • An object of this invention is to provide a battery module and a method of production that exhibit improved simplicity and flexibility compared to conventional modules and methods. This object is achieved by the module and method defined by the technical features contained in the independent claims.
  • the dependent claims contain advantageous embodiments, further developments and variants of the invention.
  • the invention concerns a battery module comprising a plurality of prismatic battery cells having two opposite main sides, wherein the battery cells are arranged side by side in a row with the main sides facing each other, wherein the row of battery cells has a lower side, an upper side, first and second opposite long sides and first and second opposite short sides, and wherein each short side is located at an outwardly facing main side of an outer battery cell positioned at an end of the row of battery cells.
  • the invention is characterized in that the battery cells are connected to each other by means of an adhesive material arranged between adjacent main sides of the battery cells.
  • a further advantage is the extreme flexibility.
  • the adhesive material is preferably a tape or sheet of material with adhesive on both sides (such as double-stick tape), which typically does not require time for setting/hardening, but various adhesives may be used.
  • This disclosure focuses in general on battery cells having a capacity in the approximate range 20-60 Ah and an outer (casing) size of around 20-30 mm (thickness), 140-160 mm (width) and 90-100 mm (height).
  • Battery modules and battery packs made up of such cells are typically well adapted for powering electric propulsion and operation of vehicles, such as electric forklifts, trucks and cars, as well as for powering stationary devices, such as industrial machinery.
  • main sides of the battery cell means the two opposite larger and typically substantially flat sides of the individual prismatic cell (casing).
  • the row of battery cells thus forms a sort of layered structure.
  • the battery module comprises an arrangement of supporting plates configured to hold the battery cells together, wherein the arrangement of supporting plates comprises first and second end plates positioned at the short sides of the row of battery cells.
  • Supporting plates are often advantageous for holding the cells more firmly in place and for pressing the cells together to avoid swelling over time. Supporting plates can also protect the cells from impacts.
  • the supporting plates are made of (stainless) steel and have a thickness of 1-3 mm.
  • Thickness and height of cells (or of casings of cells) of similar type and capacity may differ between different suppliers but the width is more often standardized. It therefore makes sense to prefabricate end plates that has a width adapted to a certain standard (or to prefabricate a variety of end plates adapted to different width standards).
  • the end plates are preferably configured to fit to cells of at least slightly different height.
  • At least one of the first and second end plates is connected to the main side of the corresponding outer battery cell by means of an adhesive material.
  • both the first and the second end plates are connected to the main side of the corresponding outer battery cell by means of an adhesive material.
  • the cells and the two end plates can thus simply be lined up in a row on a table and be pressed together (after having arranged adhesive material between adjacent cells and end plates).
  • the arrangement of supporting plates comprises first and second side plates extending between the first and second end plates along opposite long sides of the row of battery cells, wherein each of the first and second side plates is connected to both the first and the second end plate.
  • the four supporting plates i.e. the two end plates and the two side plates, thus form a supporting structure that surrounds the row of battery cells. Since the cells are connected to each other and to the end plates via the adhesive material all parts are hold together also in the vertical direction. No base plate or similar component arranged under the cells is needed for this purpose, which reduces the number of components required in the battery module. Further, there is no particular restriction in height of the cells since supporting plates are arranged only on the sides of the row of battery cells, not on top. This increases the flexibility of the production of the module.
  • the battery cells and the end plates are pressed together firmly in the longitudinal direction of the module/row of cells before connecting the side plates to the end plates. Besides that this holds the cells and the entire module together in a better way, it prevents the cells from swelling over time.
  • the cells may be slightly compressed before connecting the plates. In some applications, typically where each cell is provided with a plastic covering, it is suitable to press together the module so that each cell is compressed around 0.05 mm before connecting the plates. The compression/pressing together of the row of end plates and cells can be carried out by a simple pressing machine.
  • first and second side plates are welded to the first and second end plates. This can be made in an efficient manner and it provides for a robust joint. Moreover, there is no need to provide the plates with any screw holes or similar additional details for connection, and there is no risk of having to spend time on fitting such additional connection details during assembling of the module (e.g. aligning of screw holes in different plates).
  • each end plate is provided with first and second side flanges extending at least partly between the upper and lower sides of the row of battery cells at each side of the end plate, wherein each side flange projects away from the row of battery cells substantially in parallel with the long sides thereof, and wherein the side plates are welded to said side flanges.
  • the side plates are in this case preferably somewhat longer than the length of the row of battery cells so as to at least partly overlap with the side flanges.
  • side flanges provide suitable surfaces for welding (it is difficult to weld an edge of the side plate to an edge of the end plate) they allow the use of side plates that are flat and that are not provided with any flanges, holes, or other details.
  • each of the first and second side plates has a uniform cross-section along its direction of extension between the end plates.
  • this cross-section has the shape of a narrow rectangle, i.e. the side plate can be formed from a simple sheet of stainless steel (or other suitable material) that has a suitable width (i.e. a suitable height when mounted onto the battery module).
  • a suitable width i.e. a suitable height when mounted onto the battery module.
  • the first and second side plates is connected to the long sides of the row of battery cells by means of an adhesive material. Welding of the side plates to the end plates is simplified if the side plates are kept in place by the adhesive material.
  • each end plate has a lower flange extending at least partly between the long sides at the lower side of the row of battery cells, wherein the lower flange projects away from the row of battery cells.
  • a lower flange can act as a support for end plate and it can in addition be used for stacking modules on top of each other (see below).
  • each end plate has an upper flange extending at least partly between the long sides at the upper side of the row of battery cells, wherein the upper flange comprises an upper surface located at a first minimum distance above an upper surface of the row of battery cells.
  • the upper flange can be used for stacking modules on top of each other (see below). The purpose of the first minimum distance is provide a space between two modules arranged onto each other, a space suitable for arrangement of e.g. electronic components used as a battery management system (BMS) for its corresponding module.
  • BMS battery management system
  • the lower and upper flanges are positioned in relation to each other so that a first battery module can be placed on top of a second similar battery module by placing the lower flange of the first battery module onto the upper surface of the upper flange of the second battery module.
  • Two or more battery modules may be electrically connected so as to form a battery pack. Stacking of modules is advantageous for providing a compact battery pack.
  • each battery cell comprises first and second terminals connected to corresponding electrodes inside the battery cell, wherein the terminals are positioned in first and second rows on the upper side of the row of battery cells.
  • the first and second rows of terminals are laterally spaced so as to form a central zone between the rows of terminals on the upper side of the row of battery cells.
  • a first conducting plate is arranged to electrically connect at least two adjacent terminals in the first row of terminals and wherein a second conducting plate is arranged to electrically connect at least two adjacent terminals in the second row of terminals.
  • each conducting plate preferably extends along the entire row of the corresponding terminals and is also connected to all terminals in the row. Accordingly, only two conducting plates are needed for a battery module where the cells are connected in parallel.
  • every other terminal in each row of terminals is preferably of the same type (i.e. plus pole or minus pole).
  • the first conduction plate may in such a case be connected to the plus pole of a first cell and the minus pole of an adjacent second cell, where these two poles form part of the first row of terminals.
  • the second conduction plate may be connected to the plus pole of the second cell and the minus pole of an adjacent third cell (arranged on the opposite side of the second cell in relation to the first cell), where these two poles form part of the second row of terminals. Accordingly, more than two conducting plates are needed for a battery module where the cells are connected in series (at least if the module comprises more than two battery cells).
  • the conducting plates are welded to the corresponding terminals. This is an efficient manufacturing step and it provides for a good electrical connection.
  • the conducting plates can have a uniform cross-section along its direction of extension so that selected lengths can be cut off from a much longer original plate depending on what lengths are required for the particular type of module to be assembled.
  • each conducting plate has an upper surface located at a certain second minimum distance above an upper surface of the row of battery cells.
  • the portion of each conducting plate provided with the upper surface is located in association with the corresponding row of terminals at an outer part of the central zone.
  • These upper surfaces can be used as support surfaces for e.g. a PCB and a space at the central zone can be used for accommodating electronic components.
  • the first minimum distance i.e. the distance between the upper surface of the row of battery cells and the upper surfaces of the upper flanges of the end plates
  • the second minimum distance i.e. the distance between the upper surface of the row of battery cells and the upper surfaces of the conducting plates.
  • the battery module comprises a printed circuit board (PCB) provided with electronic components for monitoring and/or controlling the battery module and wherein the PCB is arranged onto the upper surfaces of the first and second conducting plates.
  • the battery module is preferably arranged in such a way that the second minimum distance plus the thickness of the PCB is less (with some margin) than the first minimum distance so that also the PCB can fit in below a battery module placed on top the module the PCB is arranged onto.
  • the PCB is connected to the first and second conducting plates by means of electrically conducting fastening members connected to the portion of each conducting plate provided with the upper surface.
  • the fastening members are metal screws that are fastened into screw holes in the conducting plates.
  • the upper portion of the conducting plates provides room for the threaded part of a screw. This is an efficient way of fastening the PCB.
  • the PCB can be fed with electric power as well as receive cell information, such as voltage, via the electrically conducting fastening members.
  • a metal screw or other connector is also useful for conducting heat away from the PCB.
  • the upper surface of the conducting plates can be arranged in different ways.
  • One way is to use a thin conducting plate with an even thickness and provide it with a certain shape, such as a U-shaped flange where the U is upside down and where the horizontal part of the U forms the upper surface.
  • Another way is to use a thick plate so that the entire upper side forms the “upper surface”.
  • a further way is to vary the thickness of the plate so that it is thinner where it is intended to be connected to the terminals (a thinner plate is easier to weld to the terminals) and thicker at the portion forming the “upper surface”.
  • a conducting plate with greater thickness at the PCB improves the electrical conductivity and enhances the conduction of heat away from the PCB.
  • the conducting plates may be made of aluminium and have a thickness at the terminals of around 1-1.5 mm. The thickness may be further reduced locally at the terminals.
  • Such an aluminium conducting plate may be provided with e.g. a U-shape and have thickness of around 2 mm in the shaped part.
  • At least one of the electronic components is surface-mounted onto the PCB, wherein the PCB is oriented so that the side of the PCB provided with the surface-mounted electronic component is facing downwards towards the upper side of the row of battery cells. This way the electronic component is well protected against impacts etc. and it also allows for efficient use of the space between the row of terminals at the central zone.
  • each battery cell comprises a casing substantially having the shape of a flat rectangular hexahedron.
  • a casing does of course not need to be a perfect rectangular hexahedron, typically the edges and corners are somewhat rounded and the two main sides do not necessarily have to be entirely flat.
  • the invention also concerns a method of manufacturing a battery module comprising a plurality of prismatic battery cells having two opposite main sides, wherein the battery cells are arranged side by side in a row with the main sides facing each other, wherein the row of battery cells has a lower side, an upper side, first and second opposite long sides and first and second opposite short sides, and wherein each short side is located at an outwardly facing main side of an outer battery cell positioned at an end of the row of battery cells.
  • the method comprises the step of: connecting the battery cells to each other by arranging an adhesive material between adjacent main sides of the battery cells and pressing the battery cells together.
  • the method comprises the step of: connecting first and second end plates at the short sides of the row of battery cells by arranging an adhesive material between each end plate and the main side of the corresponding outer battery cell and pressing the end plates in place.
  • the method comprises the step of: arranging first and second side plates so as to extend between the first and second end plates along opposite long sides of the row of battery cells and connecting each of the first and second side plates to both the first and the second end plate, preferably by welding.
  • the method comprises the step of: connecting, by means of an adhesive material, the first and second side plates to the corresponding long side of the row of battery cells before connecting the side plates to the end plates.
  • the method comprises the step of: pressing together, and preferably slightly compressing, the row of battery cells and the first and second end plates in a longitudinal direction of the row of battery cells before connecting the side plates to the end plates.
  • the method comprises the step of: connecting by means of welding a first conducting plate to at least two adjacent terminals in a first row of terminals and connecting by means of welding a second conducting plate to at least two adjacent terminals in a second row of terminals, wherein each battery cell comprises first and second terminals connected to corresponding electrodes inside the battery cell, and wherein the terminals are positioned in the first and second rows on the upper side of the row of battery cells.
  • the method comprises the step of: connecting a printed circuit board (PCB) provided with electronic components for monitoring and/or controlling the battery module to upper surfaces of the first and second conducting plates.
  • PCB printed circuit board
  • the method comprises the step of: connecting the PCB to the first and second conducting plates by means of electrically conducting fastening members that are introduced into holes in the conducting plates.
  • the step of connecting the PCB to the first and second conducting plates is carried out before the step of welding the conducting plates to the corresponding terminals.
  • Figure 1 shows, in a perspective view, a first embodiment of a battery module according to the invention.
  • Figure 2 shows, in an exploded view, the embodiment of figure 1.
  • Figure 3 shows a cross-section of the embodiment of figure 1 across a longitudinal direction of the module.
  • Figure 4 shows a side view of a short side of the embodiment of figure 1.
  • Figure 5 shows a side view of a long side of the embodiment of figure 1.
  • Figure 6 shows, in a perspective view, a second embodiment of a battery module according to the invention.
  • Figure 7 shows a plurality of battery modules according to figure 1 arranged together in a battery pack.
  • Figures 1-5 show a first embodiment of a battery module 1 comprising seven prismatic battery cells 2-8 each of which having the general shape of a flat rectangular hexahedron with two main sides facing in opposite directions (downwards-left and upwards-right in figures 1 and 2; left and right in figure 5).
  • the battery cells 2-8 are arranged side by side in a row with the main sides facing each other.
  • the row of battery cells has a lower side 9, an upper side 10, first and second opposite long sides 11 , 12 and first and second opposite short sides 13, 14 (see figures 3-5).
  • Each short side 13, 14 is located at an outwardly facing main side of an outer battery cell 2, 8 positioned at an end of the row of battery cells 2-8.
  • the battery cells 2-8 are connected to each other by means of an adhesive material in the form of a sheet 15 provided with adhesive on both sides.
  • the sheet 15 is arranged between adjacent main sides of the battery cells 2-8, see figure 2. (Two of the battery cells 6, 7 have been removed in figure 2 to clearly show the adhesive sheets 15.)
  • the battery module 1 further comprises an arrangement of supporting plates configured to hold the battery cells 2-8 together.
  • the arrangement of supporting plates comprises first and second end plates 16, 17 positioned at the short sides 13, 14 of the row of battery cells and first and second side plates 18, 19 extending between the first and second end plates 16, 17 along opposite long sides 11 , 12 of the row of battery cells.
  • the first and second end plates 16, 17 is connected to the main side of the corresponding outer battery cell 2, 8 by means of a similar adhesive material 15 as used for connecting the battery cells 15.
  • Each of the first and second side plates 18, 19 is connected to both the first and the second end plate 16, 17 by means of welding to first and second side flanges 20-23 extending between the upper and lower sides 9, 10 of the row of battery cells at each side of the end plates 16, 17.
  • Each side flange 20-23 projects away from the row of battery cells substantially in parallel with the long sides 11 , 12 thereof.
  • Each of the first and second side plates 18, 19 forms a flat metal sheet and has a uniform cross-section along its direction of extension between the end plates 16, 17.
  • the first and second side plates 18, 19 are connected to the long sides 11 , 12 of the row of battery cells by means of an adhesive material of the same type as mentioned above..
  • Each end plate 16, 17 has a lower flange 24, 25 (see figure 5) that extends between the long sides 11 , 12 at the lower side 9 of the row of battery cells and that projects away from the row of battery cells.
  • Each end plate 16, 17 is further provided with an upper flange 26, 27 (in this example there are two upper flanges on each end plate 16, 17) extending at least partly between the long sides 11 , 12 at the upper side 10 of the row of battery cells.
  • Each upper flange 26, 27 comprises an upper surface 26a, 27a, located at a first minimum distance above an upper surface of the row of battery cells.
  • the lower and upper flanges 24-27 are positioned in relation to each other so that a first battery module can be placed on top of a second similar battery module by placing the lower flange 24, 25 of the first battery module onto the upper surface 26a, 27a of the upper flange 26, 27 of the second battery module.
  • FIG 7 shows a partly assembled battery pack 70 where a first battery module 71 is placed on top of a second battery module 72. Further battery modules 73 and 74 are mechanically and electrically connected to each other and to modules 71 and 72 by means of various bars and screws 75.
  • the battery pack 70 is not complete.
  • each battery cell 2-8 comprises first and second terminals 31 , 32 positioned in first and second rows on the upper side 10 of the row of battery cells.
  • the terminals 31 , 32 are connected to corresponding electrodes (not shown) inside the battery cell 2-8.
  • the terminals 31 , 32 are connected to corresponding electrodes (not shown) inside the battery cell 2-8.
  • the terminals 31 , 32 are connected to corresponding electrodes (not shown) inside the battery cell 2-8.
  • the first and second rows of terminals 31 , 32 are laterally spaced so as to form a central zone 33 between the rows of terminals on the upper side 10 of the row of battery cells.
  • a first conducting plate 34 is arranged to electrically connect, in this example, all terminals 31 in the first row of terminals and a second conducting plate 35 is arranged to electrically connect, in this example, all terminals 32 in the second row of terminals.
  • the battery cells 2-8 are thus connected in parallel.
  • the conducting plates 34, 35 are welded to the corresponding terminals 31 ,
  • each conducting plate 34, 35 is provided with a flange 36 having the shape of a U (turned upside down) at an inside of the row of terminals.
  • the horizontal part of the U forms an upper surface 37 (see also figures 1 -2) located at a certain second minimum distance above an upper surface of the row of battery cells.
  • the upper surface 37 is located in association with the corresponding row of terminals at an outer part of the central zone 33.
  • the first minimum distance is larger than the second minimum distance so that two similar battery modules can be placed on top of each other but still provide some space vertically between the battery cells of the two rows of battery cells. This is indicated in figure 3.
  • the battery module 1 further comprises a printed circuit board (PCB) 38 provided with electronic components (not shown) for monitoring and/or controlling the battery module 1.
  • the PCB 38 is arranged onto the upper surfaces 37 of the first and second conducting plates 34, 35 by means of electrically conducting screws 39 that are fastened into screw holes 40 (see figure 2) arranged in the upper surfaces 37 of the conducting plates 34, 35.
  • Electronic components that are surface-mounted onto the PCB 38 are provided onto a side of the PCB that is facing downwards towards the upper side 10 of the row of battery cells.
  • the conducting plates 34, 35 has an outer flange 41 used for connection to other battery modules.
  • a connection 42 for/to the PCB 38 is arranged at the end plates 16, 17 on the upper side 10 of the row of battery cells.
  • a second embodiment 100 of the battery module is shown in figure 6.
  • a difference compared to what is shown in figure 1 -5 is that the battery cells 102-108 in figure 6 are connected in series. Every second battery cell is turned 180° horizontally in relation to adjacent cells so the terminals in one row of terminals is minus pole, plus pole, minus pole, plus pole, etc. A consequence is that all terminals in one row cannot be connected to the same conducting plate. Instead a number of shorter conducting plates 134a- 134d, 135a-135d are used to connect adjacent terminals (except plates 134a and 135d that connect only to one terminal).
  • the general structure of the battery module 100 is the same as the battery module 1 described above; for instance the conducting plates 134, 135 has the same cross section as the plates 34, 35 described above, the end plate 16 and the side plate 19 have the same structure and are arranged in the same way, also the PCB 38 is similar and connected in a similar way, the use of adhesive material is the same, etc..
  • Manufacturing of the battery module 1 preferably comprises the following steps:
  • the same principal can be used for manufacturing of the battery module 100 shown in figure 6.

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  • Engineering & Computer Science (AREA)
  • Sustainable Energy (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

L'invention concerne un module de batterie (1, 100) comprenant une pluralité de cellules de batterie prismatiques (2-8) ayant deux côtés principaux opposés, les cellules de batterie (2-8) étant disposées côte à côte dans une rangée avec les côtés principaux se faisant face, la rangée de cellules de batterie ayant un côté inférieur (9), un côté supérieur (10), des premier et second côtés longs opposés (11, 12) et des premier et second côtés courts opposés (13, 14), et chaque côté court (13, 14) étant situé au niveau d'un côté principal faisant face vers l'extérieur d'une cellule de batterie externe (2, 8) positionnée à une extrémité de la rangée de cellules de batterie (2-8). L'invention est caractérisée en ce que les éléments de batterie (2-8) sont reliés les uns aux autres au moyen d'un matériau adhésif (15) disposé entre des côtés principaux adjacents des éléments de batterie (2-8). L'invention concerne en outre un procédé de fabrication d'un module de batterie du type ci-dessus.
PCT/SE2019/050276 2018-03-29 2019-03-27 Module de batterie WO2019190385A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19775495.5A EP3776690A4 (fr) 2018-03-29 2019-03-27 Module de batterie

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE1850361 2018-03-29
SE1850361-5 2018-03-29

Publications (1)

Publication Number Publication Date
WO2019190385A1 true WO2019190385A1 (fr) 2019-10-03

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EP (1) EP3776690A4 (fr)
WO (1) WO2019190385A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021204349A1 (de) 2020-06-01 2021-12-02 Mitsubishi Heavy Industries, Ltd. Zentrifugalkompressor und Zentrifugalkompressor-Spiralgehäuse

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WO2007105889A1 (fr) * 2006-03-13 2007-09-20 Lg Chem, Ltd. Module de batterie de moyenne ou grande dimension utilisant un élément amortisseur de choc
US20110117419A1 (en) * 2009-11-19 2011-05-19 Hyun-Ye Lee Battery pack
WO2012044065A2 (fr) * 2010-09-29 2012-04-05 주식회사 명신이엔지 Bloc de batteries et ensemble bloc de batteries équipé dudit bloc
US20130101881A1 (en) * 2011-10-19 2013-04-25 GM Global Technology Operations LLC Wave fin battery module
WO2014028184A1 (fr) * 2012-08-13 2014-02-20 Dow Kokam Llc Support pour montage de cellules de batterie sur une carte de circuit imprimé
WO2014203342A1 (fr) * 2013-06-19 2014-12-24 日立オートモティブシステムズ株式会社 Module de batterie
WO2015196046A1 (fr) * 2014-06-20 2015-12-23 Robert Bosch Gmbh Support de piles avec fixation de cellules
US20160093849A1 (en) * 2014-09-30 2016-03-31 Johnson Controls Technology Company Battery module compressed cell assembly
US20160268564A1 (en) * 2015-03-11 2016-09-15 Samsung Sdi Co., Ltd. Battery module

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JP5868676B2 (ja) * 2011-11-30 2016-02-24 三洋電機株式会社 電源装置及びこれを備える車両並びに蓄電装置
JP6198061B2 (ja) * 2013-10-28 2017-09-20 株式会社オートネットワーク技術研究所 配線モジュール
KR102308635B1 (ko) * 2015-04-17 2021-10-05 삼성에스디아이 주식회사 배터리 모듈

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WO2007105889A1 (fr) * 2006-03-13 2007-09-20 Lg Chem, Ltd. Module de batterie de moyenne ou grande dimension utilisant un élément amortisseur de choc
US20110117419A1 (en) * 2009-11-19 2011-05-19 Hyun-Ye Lee Battery pack
WO2012044065A2 (fr) * 2010-09-29 2012-04-05 주식회사 명신이엔지 Bloc de batteries et ensemble bloc de batteries équipé dudit bloc
US20130101881A1 (en) * 2011-10-19 2013-04-25 GM Global Technology Operations LLC Wave fin battery module
WO2014028184A1 (fr) * 2012-08-13 2014-02-20 Dow Kokam Llc Support pour montage de cellules de batterie sur une carte de circuit imprimé
WO2014203342A1 (fr) * 2013-06-19 2014-12-24 日立オートモティブシステムズ株式会社 Module de batterie
WO2015196046A1 (fr) * 2014-06-20 2015-12-23 Robert Bosch Gmbh Support de piles avec fixation de cellules
US20160093849A1 (en) * 2014-09-30 2016-03-31 Johnson Controls Technology Company Battery module compressed cell assembly
US20160268564A1 (en) * 2015-03-11 2016-09-15 Samsung Sdi Co., Ltd. Battery module

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021204349A1 (de) 2020-06-01 2021-12-02 Mitsubishi Heavy Industries, Ltd. Zentrifugalkompressor und Zentrifugalkompressor-Spiralgehäuse

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EP3776690A4 (fr) 2021-12-29

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