Classifications

• • 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
  • H01M50/10—Primary casings; Jackets or wrappings
  • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
  • H01M50/105—Pouches or flexible bags
• • 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
  • H01M50/211—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for pouch cells
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/04—Construction or manufacture in general
  • H01M10/0481—Compression means other than compression means for stacks of electrodes and separators
• • 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
  • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
  • H01M10/482—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for several batteries or cells simultaneously or sequentially
• • 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
  • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
  • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/60—Heating or cooling; Temperature control
  • H01M10/61—Types of temperature control
  • H01M10/613—Cooling or keeping cold
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/60—Heating or cooling; Temperature control
  • H01M10/64—Heating or cooling; Temperature control characterised by the shape of the cells
  • H01M10/647—Prismatic or flat cells, e.g. pouch cells
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/60—Heating or cooling; Temperature control
  • H01M10/65—Means for temperature control structurally associated with the cells
  • H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/60—Heating or cooling; Temperature control
  • H01M10/65—Means for temperature control structurally associated with the cells
  • H01M10/655—Solid structures for heat exchange or heat conduction
  • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M10/00—Secondary cells; Manufacture thereof
  • H01M10/60—Heating or cooling; Temperature control
  • H01M10/65—Means for temperature control structurally associated with the cells
  • H01M10/655—Solid structures for heat exchange or heat conduction
  • H01M10/6554—Rods or plates
  • H01M10/6555—Rods or plates arranged between the cells
• • H—ELECTRICITY
  • H01—ELECTRIC ELEMENTS
  • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
  • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
  • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
  • H01M50/218—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material
  • H01M50/22—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the material of the casings or racks
  • H01M50/222—Inorganic material
  • H01M50/224—Metals
• • 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
  • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
  • H01M50/238—Flexibility or foldability
• • 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
  • H01M50/30—Arrangements for facilitating escape of gases
  • H01M50/317—Re-sealable arrangements
• • 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
  • H01M50/30—Arrangements for facilitating escape of gases
  • H01M50/394—Gas-pervious parts or elements
• • 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
  • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
  • H01M50/46—Separators, membranes or diaphragms characterised by their combination with electrodes
• • 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
  • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
  • H01M50/463—Separators, membranes or diaphragms characterised by their shape
  • H01M50/466—U-shaped, bag-shaped or folded
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
  • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
  • Y02E60/10—Energy storage using batteries
• • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
  • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
  • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
  • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
  • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Definitions

• Embodiments described herein relate to electrodes and electrochemical cell modules with stacks of electrochemical cells.
• Electrochemical cells can be packaged in module cases to achieve large voltages and/or capacities for a desired purpose.
• Modules can include multiple electrochemical cells, such that risk is minimized. In other words, the effects of one defective cell can be localized to that cell, such that the electroactive materials in the other cells are not contaminated.
• cell modules often include several additional components for proper functioning. The extra components can negatively affect volumetric capacity of the modules. Minimizing dead space in the cell modules can improve the volumetric capacity of the modules.
• an electrochemical cell module can include a first electrochemical cell.
• the first electrochemical cell includes an anode material disposed on an anode current collector, a cathode material disposed on a cathode current collector, a separator disposed between the anode material and the cathode material and extending beyond the anode material and the cathode material, and a pouch material encasing the first electrochemical cell.
• the pouch material extends beyond the separator.
• the electrochemical cell module further includes a second electrochemical cell and a module case housing the first electrochemical cell and the second electrochemical cell.
• the portion of the separator that extends beyond the outer edge of the anode material and the cathode material and the portion of the pouch material that extends beyond the outer edge of the separator are folded at an angle of about 80 degrees to about 110 degrees with respect to the anode material and the cathode material.
• the electrochemical cell module can include a heat sink disposed between the first electrochemical cell and the second electrochemical cell.
• the heat sink extends beyond the outer edge of the anode material and the outer edge of the cathode material, and wherein the heat sink is folded such that a portion of the heat sink contacts an interior surface of the module case.
• the electrochemical cell module can include a temperature sensor disposed between the first electrochemical cell and the second electrochemical cell.
• FIG. 1 is a block diagram of an electrochemical cell module, according to an embodiment.
• FIGS. 2A-2B are illustrations of an electrochemical cell, according to an embodiment.
• FIGS. 3A-3F are illustrations of an electrochemical cell module, according to an embodiment.
• FIGS. 4A-4B are illustrations of an electrochemical cell module, according to an embodiment.
• FIGS. 5A-5C are illustrations of an electrochemical cell module, according to an embodiment.
• FIG. 6 is an illustration of an electrochemical cell, according to an embodiment.
• FIGS. 7A-7E are illustrations of a method of forming an electrochemical cell module, according to an embodiment.
• FIGS. 8A-8E are illustrations of a method of forming an electrochemical cell module, according to an embodiment.
• FIGS. 9A-9E are illustrations of a method of forming an electrochemical cell module, according to an embodiment.
• FIGS. 10A-10C are illustrations of a method of forming an electrochemical cell module, according to an embodiment.
• Embodiments described herein relate to electrochemical cell modules and methods of producing the same.
• Unused space is a significant problem faced with large arrays of electrochemical cells.
• a cathode and an anode can be of different sizes, in order to properly maximize material utilization.
• a separator can be sized such that its length and width dimensions are greater than those of the anode and the cathode, such that the separator can be coupled directly to a pouch material to prevent cross contamination between the anode and the cathode.
• the pouch material can also have longer length and width dimensions than the separator to aid in containment of the electroactive material.
• a member is intended to mean a single member or a combination of members
• a material is intended to mean one or more materials, or a combination thereof.
• a portion of a support member that is described as being “substantially linear” is intended to convey that, although linearity of the portion is desirable, some non-linearity can occur in a “substantially linear” portion. Such non-linearity can result from manufacturing tolerances, or other practical considerations (such as, for example, the pressure or force applied to the support member).
• a geometric construction modified by the term “substantially” includes such geometric properties within a tolerance of plus or minus 5% of the stated geometric construction.
• a “substantially linear” portion is a portion that defines an axis or center line that is within plus or minus 5% of being linear.
• the term “set” and “plurality” can refer to multiple features or a singular feature with multiple parts.
• the set of electrodes can be considered as one electrode with multiple portions, or the set of electrodes can be considered as multiple, distinct electrodes.
• the plurality of electrochemical cells can be considered as multiple, distinct electrochemical cells or as one electrochemical cell with multiple portions.
• a set of portions or a plurality of portions may include multiple portions that are either continuous or discontinuous from each other.
• a plurality of particles or a plurality of materials can also be fabricated from multiple items that are produced separately and are later joined together (e.g., via mixing, an adhesive, or any suitable method).
• solid refers to a material that is a mixture of liquid and solid phases, for example, such as a particle suspension, a slurry, a colloidal suspension, an emulsion, a gel, or a micelle.
• FIG. 1 is a block diagram of an electrochemical cell module 100, according to an embodiment.
• the electrochemical cell module 100 includes a first electrochemical cell 110a, a second electrochemical cell 110b (collectively referred to as electrochemical cells 110), and an external casing 160.
• the electrochemical cell module 100 can also include frames 120a, 120b (collectively referred to as frames 120), a heat sink 130, a degas area 140, and a pressure member 150.
• the electrochemical cells 110 can be the same or substantially similar to the electrochemical cells described in the ‘587 patent.
• Each of the electrochemical cells 110 can include an anode material disposed on an anode current collector, a cathode material disposed on a cathode current collector, and a separator disposed between the anode material and the cathode material.
• the separator can be large enough that a portion of the separator extends beyond an outer edge of the anode material and an outer edge of the cathode material.
• the electrochemical cells 110 can further include a pouch material at least partially encasing the anode material, the anode current collector, the cathode material, the cathode current collector, and the separator.
• the pouch material can contact the anode current collector, the cathode current collector, and/or the separator.
• the pouch material can be large enough that a portion of the pouch material extends beyond outer bounds of the separator.
• the pouch material and the separator can be folded relative to the anode material and the cathode material, rather than extending outward from the anode material and the cathode material.
• the electrochemical cell module 100 includes two electrochemical cells 110.
• the electrochemical cell module 100 can include 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, at least about 20, at least about 25, at least about 30, at least about 35, at least about 40, at least about 45, at least about 50, at least about 55, at least about 60, at least about 65, at least about 70, at least about 75, at least about 80, at least about 85, at least about 90, at least about 95, or at least about 100 electrochemical cells 110, inclusive of all values and ranges therebetween.
• the electrochemical cells 110 can be connected in parallel. In some embodiments, the electrochemical cells 110 can be connected in series.
• the electrochemical cells 110 can be connected both in series and in parallel. In some embodiments, one or more of the electrochemical cells 110 can include a single unit cell. In some embodiments, one or more of the electrochemical cells 110 can include a bi-cell.
• the stackable characteristics of the electrochemical cells 110 can allow for ease of production.
• the electrochemical cells 110 can be manufactured via pick- and-place assembly.
• the electrochemical cells 110 can be manufactured without winding or Z-folding to stack them together. Rather, the pick-and-place procedure can produce the electrochemical cells 110 side-by-side and the electrochemical cells 110 can be stacked upon each other after production is complete.
• the pick-and-place assembly can also facilitate extra quality control (QC) inspection.
• QC quality control
• a casting and assembly apparatus can produce electrochemical cells 110 via pick-and-place assembly, and the electrochemical cells 110 can be stacked in a first stack.
• the electrochemical cells 110 can be de-stacked and can individually go through extra QC inspection before assembly into a second stack in the electrochemical cell module 100. This extra QC inspection can ensure that each of the electrochemical cells 110 that are included in the electrochemical cell module 100 are of high quality.
• the electrochemical cells 110 can be examined via infrared (IR) inspection prior to assembling the electrochemical cells 110 into the second stack in the electrochemical cell module 100.
• IR infrared
• the frames 120 provide support members for the electrochemical cells 110.
• the frames 120 can be stacked upon one another.
• the frames can include holes for coupling members (e.g., bolts, screws) to pass through.
• the frames 120 can be composed of plastic, polypropylene (PP), polyethylene (PE), polyethylene terephthalate (PET), or any combination thereof.
• the frames 120 can be non-flammable and/or flame retardant.
• the heat sink 130 draws heat away from the electrochemical cells 110 and the active material therein.
• the heat sink 130 can include a metal sheet.
• the electrochemical cell module 100 can include multiple heat sinks 130.
• the heat sinks 130 can be placed between each pair of electrochemical cells 110.
• the heat sinks 130 can be placed intermittently between electrochemical cells 110.
• the heat sink 130 can be integrated into one or more of the frames 120.
• the heat sink 130 can contact the electrochemical cells 110, the frames 120, and/or the external casing 160.
• the heat sink 130 can be bent to contact the top and sides of the electrochemical cells 110 while also contacting the interior walls of the external casing 160.
• the heat sink 130 can include a hole for degassing.
• the degas area 140 can be formed from holes in various components in the electrochemical cell module 100, and the holes can be covered once the formation of the electrochemical cell module 100 is complete.
• the degas area 140 can be a region of space that is open to the outside environment during production of the electrochemical cell module 100 and sealed after production and degassing is complete. Examples of such implementations are further described in U.S. Patent Publication No. 2020/0411825 (“the ‘825 publication”), filed June 26, 2020 and entitled, “Dual Electrolyte Electrochemical Cells, Systems, and Methods of Manufacturing the Same,” the entire disclosure of which is hereby incorporated by reference.
• the pressure member 150 can exert a force upon the stack of electrochemical cells 110.
• the pressure member 150 can be fixedly coupled to one or more of the frames 120. As shown, the pressure member 150 is on top of the electrochemical cell 110b near the top of the electrochemical cell module 100. In some embodiments, the pressure member 150 can be located near the bottom of the electrochemical cell module 100. In some embodiments, the pressure member 150 can be located between the electrochemical cells 110. In some embodiments, the pressure member 150 can include a spring to exert force upon the electrochemical cells 110. In some embodiments, the pressure member 150 can include a bar (e.g., a metal bar).
• the external casing 160 houses the other components of the electrochemical cell module 110.
• the external casing 160 includes positive and negative terminals.
• the external casing 160 can be composed of a metal.
• a metal casing can be beneficial for the electrochemical cells 110 if they are connected in parallel.
• the external casing 160 can include an aluminum base at the positive terminal.
• the external casing 160 can include nickel, a nickel plate, iron, and/or copper at the negative terminal.
• a jumper tab can be used to connect the terminals.
• the external casing 160 can include plastic on its exterior surfaces with metal on its interior surfaces.
• weld tabs of the first and last electrochemical cells in the series can be welded or mechanically connected to the inside of the external casing.
• FIGS. 2A-2B show an electrochemical cell 210, according to an embodiment.
• FIG. 2A shows a cross-sectional view of the electrochemical cell 210
• FIG. 2B shows an overhead view of the electrochemical cell 210.
• the electrochemical cell 210 can be integrated into an electrochemical cell module, such as the electrochemical cell module 100, as described above with reference to FIG. 1.
• the electrochemical cell 210 includes an anode material 211 disposed on an anode current collector 212, a cathode material 213 disposed on a cathode current collector 214, with a separator 215 disposed between the anode material 211 and the cathode material 213.
• the anode current collector 212 includes an anode tab 216 and the cathode current collector 214 includes a cathode tab 217.
• a pouch material 218 is disposed around the outside of the anode current collector 212 and the cathode current collector 214 to form a pouch.
• the anode tab 216 and the cathode tab 217 can extend to a region exterior to the pouch material 218.
• the anode tab 216 and/or the cathode tab 217 can be coupled to an anode tab and/or a cathode tab of one or more adjacent electrochemical cells in an electrochemical cell module.
• the electrochemical cell 210 can be the same or substantially similar to the electrochemical cells described in the ‘587 patent.
• the pouch material 218 is of sufficient size, such that the pouch material 218 extends beyond an outer edge of the separator 215.
• the pouch material 218 has a length greater than a length of the separator 215 and a width greater than a width of the separator 215.
• the length of the pouch material 218 can be greater than the length of the separator 215 by about 100 pm, about 200 pm, about 300 pm, about 400 pm, about 500 pm, about 600 pm, about 700 pm, about 800 pm, about 900 pm, about 1 mm, about
• the width of the pouch material 218 can be greater than the width of the separator 215 by about 100 pm, about 200 pm, about 300 pm, about 400 pm, about 500 pm, about 600 pm, about 700 pm, about 800 pm, about 900 pm, about 1 mm, about 1.5 mm, about 2 mm, about 2.5 mm, about 3 mm, about 3.5 mm, about 4 mm, about 4.5 mm, about 5 mm, about 5.5 mm, about 6 mm, about 6.5 mm, about
• the pouch material 218 includes vent holes 219.
• the vent holes 219 allow for degassing from the electrochemical cell 210 during production and initial cycling of the electrochemical cell 210.
• the vent holes 219 can be formed from laminating a portion of the outer edges of the pouch material 218 and leaving one or more portions of the outer edges of the material 218 unlaminated.
• the vent holes 219 can remain open during operation of the electrochemical cell 210.
• the electrochemical cell 210 can be disposed in an external casing (e.g., the external casing 160 as described above with reference to FIG. 1).
• FIGS. 3A-3F show an electrochemical cell module 300, according to an embodiment.
• the electrochemical cell module 300 includes electrochemical cells 310a, 310b, 310c, 310d, 310e (collectively referred to as electrochemical cells 310), heat sinks 330a, 330b, 330c, 330d, 330e (collectively referred to as heat sinks 330), a pressure member 350, an external casing 360, and temperature sensors 370a, 370b, 370c, 370d, 370e (collectively referred to as temperature sensors 370).
• FIG. 3A shows a side view of the electrochemical cell module 300
• FIG. 3B shows a detailed view of a section B of the electrochemical cell 310c
• FIG. 3C shows a tab coupling scheme of an electrochemical cell 310
• FIG. 3D shows a front view of the electrochemical cell module 300
• FIG. 3E shows a back view of the electrochemical cell module 300
• FIG. 3F shows an external view of the external casing 360 of the electrochemical cell module 300.
• the electrochemical cells 310, the heat sinks 330, the pressure member 350, and the external casing 360 can be the same or substantially similar to the electrochemical cells 110, the heat sink 130, the pressure member 150, and the external casing 360, as described above with reference to FIG. 1.
• certain aspects of the electrochemical cells 310, the heat sinks 330, the pressure member 350, and the external casing 360 are not described in greater detail herein.
• the electrochemical cells 310 include an anode material 311 disposed on an anode current collector 312, a cathode material 313 disposed on a cathode current collector 314, with a separator 315 disposed between the anode material 311 and the cathode material 313.
• the anode current collector 312 includes an anode tab 316 and the cathode current collector 314 includes a cathode tab 317.
• the electrochemical cells 310 also include a pouch material 318 disposed around the outside of the anode current collector 312 and the cathode current collector 314 to form a pouch.
• the separator 315, the cathode tab 317, and the pouch material 318 are folded at an angle with respect to the anode material 311 and the cathode material 313.
• the anode tab 316 can be folded at an angle with respect to the anode material 311 and the cathode material 313.
• the separator 315, the cathode tab 317, and the pouch material 318 form an angle of approximately 90 degrees with respect to the lengthwise or widthwise dimension of the anode material 311 and the cathode material 313.
• the separator 315, the anode tab 316, the cathode tab 317, and/or the pouch material 318 can form an angle of about 80 degrees, about 85 degrees, about 90 degrees, about 95 degrees, about 100 degrees, about 105 degrees, about 110 degrees, about 115 degrees, about 120 degrees, about 125 degrees, or about 130 degrees with respect to the lengthwise or widthwise dimension of the anode material 311 and the cathode material 313, inclusive of all values and ranges therebetween.
• the separator 315, the anode tab 316, the cathode tab 317, and/or the pouch material 318 can be attached to the inner walls of the external casing 360 (e.g., via an adhesive).
• the separator 315, the cathode tab 317, and the pouch material 318 are folded to minimize a distance between the external casing 360 and a leading edge of the anode material 311 and/or the cathode material 313. Minimizing this distance can minimize the amount of unused space in the electrochemical cell module 300.
• the distance between the external casing 360 and the leading edge of the anode material 311 and/or the cathode material 313 can be less than about 2 mm, less than about 1.9 mm, less than about 1.8 mm, less than about 1.7 mm, less than about 1.6 mm, less than about 1.5 mm, less than about 1.4 mm, less than about 1.3 mm, less than about 1.2 mm, less than about 1.1 mm, less than about 1 mm, less than about 900 pm, less than about 800 pm, less than about 700 pm, less than about 600 pm, less than about 500 pm, less than about 400 pm, less than about 300 pm, less than about 200 pm, less than about 100 pm, less than about 90 pm, less than about 80 pm, less than about 70 pm, less than about 60 pm, less than about 50 pm, less than about 40 pm, less than about 30 pm, less than about 20 pm, or less than about 10 pm, inclusive of all values and ranges therebetween.
• FIG. 3C shows a scheme coupling the electrochemical cell 310 to the external casing 360 via the anode tab 316 and the cathode tab 317.
• the cathode tab 317 is oriented, such that it folds upward with respect to the electrochemical cell 310
• the anode tab 316 is oriented, such that it folds downward with respect to the electrochemical cell 310.
• the anode tab 316 extends out of the electrochemical cell 310 in an opposite direction, compared to the cathode tab 317.
• This arrangement can correspond to cells connected in series.
• the cathode tab 317 can extend out of the electrochemical cell 310 in the same direction as the anode tab 316. This arrangement can correspond to cells connected in parallel.
• the external casing 360 includes a negative terminal 362, a positive terminal 364, and a communication device 365.
• the negative terminal 362 is electrically coupled to one or more anode tabs 316.
• the anode tabs 316 can be coupled to a metal plate, and the metal plate can be coupled to the negative terminal 362.
• the anode tabs 316 can be coupled directly to the inner wall of the external casing 360.
• the coupling of the anode tabs 316 to the metal plate and/or the inner wall of the external casing 360 can be via welding.
• the negative terminal 362 can be connected to ajumpertab.
• the positive terminal 364 is electrically coupled to one or more cathode tabs 317.
• the cathode tabs 317 can be coupled to a metal plate and the metal plate can be coupled to the positive terminal 364.
• the cathode tabs 317 can be coupled directly to the inner wall of the external casing 360.
• the coupling of the cathode tabs 317 to the metal plate and/or the inner wall of the external casing 360 can be via welding.
• the positive terminal 364 can be connected to a jumper tab.
• the communication device 365 communicates information about the electrochemical cell module 300.
• the communication device 365 can communicate to a user interface (e.g., a computer, a laptop computer, a desktop computer, a tablet, a mobile phone, or any other suitable device or combinations thereof).
• the communication device 365 can communicate information about the state of charge of the electrochemical cells 310, temperature information from the temperature sensors 370, pressure information from inside the external case 360, and/or any other desired information.
• the communication device 365 can include a battery management system (BMS).
• the BMS can include a printed circuit board (PCB).
• the temperature sensors 370 and/or the electrochemical cells 310 can be electrically coupled to the PCB.
• FIG. 3D shows a front view of the electrochemical cell module 300 with the cathode tabs 317a, 317c and the anode tabs 316b, 316d visible.
• FIG. 3E shows a back view of the electrochemical cell module 300 with the anode tabs 316a, 316c and the cathode tabs 317b, 317d visible.
• the electrochemical cells 310 are arranged in series, as the anode tab 316 of a first electrochemical cell 310 is coupled to a cathode tab 317 of a second electrochemical cell 310.
• FIG. 3F shows an exterior view of the external case 360 of the electrochemical cell module 300.
• the external case 360 includes a degassing aperture 366. Gases evolved during formation of the electrochemical cell module 300 can flow out of the external case 360 via the degassing aperture 366.
• a portion of the heat sink 330 can be opened (e.g., pierced) to vent gas from the degas area in the electrochemical cells 310.
• the degassing aperture 366 can be covered and sealed.
• the external casing 360 can be wrapped with a pouch or additional casing with a hermetic seal to insulate the electrochemical cell module 360.
• the external casing 360 can be wrapped by an aluminum pouch.
• the external casing 360 can be wrapped by an aluminum casing.
• the electrochemical cell module 300 can include one or more heating elements (not shown).
• the heating elements can include heating strips.
• the heating elements can be disposed between the electrochemical cells 310 (e.g., between the electrochemical cell 310a and the electrochemical cell 310b). The heating elements can aid in maintaining an elevated operating temperature.
• the heating elements can be beneficial for cell designs intended to operate at higher temperatures (e.g., at least about 25 °C, at least about 30 °C, at least about 35 °C, at least about 40 °C, at least about 45 °C, or at least about 50 °C).
• the heating elements can elevate the operating temperature to at least about -15 °C, at least about -10 °C, at least about -5 °C, at least about 0 °C, at least about 5 °C, at least about 10 °C, at least about 15 °C, or at least about 25 °C.
• the heating elements can be integrated into the heat sinks 330.
• the heat sinks 330 can be used to transfer heat into the electrochemical cell module 300 and to draw heat away from the electrochemical cells 310 in the electrochemical cell module 300 as desired.
• FIGS. 4A-4B show an electrochemical cell module 400, according to an embodiment.
• FIG. 4A shows a front view of the electrochemical cell module 400 while FIG. 4B shows a back view of the electrochemical cell module 400.
• the electrochemical cell module 400 includes electrochemical cells 410a, 410b, 410c, 410d, 410e (collectively referred to as electrochemical cells 410), heat sinks 430a, 430b, 430c, 43 Od, 43 Oe (collectively referred to as heat sinks 430), a pressure member 450, and an external case 460.
• the electrochemical cells 410 include anode tabs 416a, 416b, 416c, 416d, (collectively referred to as anode tabs 416) and cathode tabs 417a, 417b, 417c, 417d (collectively referred to as cathode tabs 417).
• the external case 460 includes a negative terminal 462, a positive terminal 464, and a communication device 465.
• the electrochemical cells 410, anode tabs 416, the cathode tabs 417, the heat sinks 430, the pressure member 450, the external case 460, the negative terminal 462, the positive terminal 464, and the communication device 465 can be the same or substantially similar to the electrochemical cells 310, anode tabs 316, the cathode tabs 317, the heat sinks 330, the pressure member 350, the external case 360, the negative terminal 362, the positive terminal 364, and the communication device 365, as described above with reference to FIGS. 3A-3F.
• electrochemical cells 410 anode tabs 416, the cathode tabs 417, the heat sinks 430, the pressure member 450, the external case 460, the negative terminal 462, the positive terminal 464, and the communication device 465 are not described in greater detail herein.
• the electrochemical cells 410 are connected in parallel.
• each of the anode tabs 416 are electrically coupled to one another while each of the cathode tabs 417 are electrically coupled to one another.
• FIGS. 5A-5C show an electrochemical cell module 500, according to an embodiment.
• the electrochemical cell module 500 includes electrochemical cells 510a, 510b, 510c, 510d, 510e (collectively referred to as electrochemical cells 510), frames 520a, 520b, 520c, 520d, 520e (collectively referred to as frames 520), heat sinks 530a, 530b, 530c, 530d, 530e (collectively referred as heat sinks 530), a pressure member 550, an external casing 560, and temperature sensors 570a, 570b, 570c, 570d, 570e (collectively referred to as temperature sensors 570).
• the electrochemical cells 510 each include an anode material 511 , an anode current collector 512, a cathode material 513, a cathode current collector
• the external casing 560 includes a negative terminal 562, a positive terminal 564, and a communication device 565.
• the electrochemical cells 310 can be the same or substantially similar to the electrochemical cells 310, the anode material 311, the anode current collector 312, the cathode material 313, the cathode current collector 314, the separator 315, the anode tab 316, the cathode tab 317, the pouch material 318, the heat sinks 330, the pressure member 350, the external casing 360, the negative terminal 362, the positive terminal 364, the communication device 365, and the temperature sensors 370, as described above with reference to FIGS.
• electrochemical cells 510 the anode material 511, the anode current collector 512, the cathode material 513, the cathode current collector 514, the separator 515, the anode tab, the cathode tab 517, the pouch material 518, the heat sinks 530, the pressure member 550, the external casing 560, the negative terminal 562, the positive terminal 564, the communication device 565, and the temperature sensors 570 are not described in greater detail herein.
• the separator 515, the cathode tab 517, and the pouch material 518 are folded at an angle with respect to the anode material 511 and the cathode material 513.
• the anode tab can be folded at an angle with respect to the anode material 511 and the cathode material 513.
• the separator 515, the cathode tab 517, and the pouch material 518 form an angle of approximately 90 degrees with respect to the lengthwise or widthwise dimension of the anode material 511 and the cathode material 513.
• the separator 515, the anode tab 516, the cathode tab 517, and/or the pouch material 518 can form an angle of about 80 degrees, about 85 degrees, about 90 degrees, about 95 degrees, about 100 degrees, about 105 degrees, about 110 degrees, about 115 degrees, about 120 degrees, about 125 degrees, or about 130 degrees with respect to the lengthwise or widthwise dimension of the anode material 511 and the cathode material 513, inclusive of all values and ranges therebetween.
• the separator 515, the cathode tab 517, and the pouch material 518 are folded to minimize a distance between an inner surface of the frame 520 and a leading edge of the anode material 511 and/or the cathode material 513. Minimizing this distance can minimize the amount of unused space in the electrochemical cell module 500.
• the distance between the frame 520 and the leading edge of the anode material 511 and/or the cathode material 513 can be less than about 2 mm, less than about 1.9 mm, less than about 1.8 mm, less than about 1.7 mm, less than about 1.6 mm, less than about 1.5 mm, less than about 1.4 mm, less than about 1.3 mm, less than about 1.2 mm, less than about 1.1 mm, less than about 1 mm, less than about 900 pm, less than about 800 pm, less than about 700 pm, less than about 600 pm, less than about 500 pm, less than about 400 pm, less than about 300 pm, less than about 200 pm, less than about 100 pm, less than about 90 pm, less than about 80 pm, less than about 70 pm, less than about 60 pm, less than about 50 pm, less than about 40 pm, less than about 30 pm, less than about 20 pm, or less than about 10 pm, inclusive of all values and ranges therebetween.
• the cathode tab 517 can be welded to the frame 520. In some embodiments, the anode tab can be welded to the frame 520. In some embodiments, the frame 520 can be welded to the inner wall of the external casing 560.
• a bottom surface 518a of the portion of the pouch material 518 that extends beyond the anode material 511 and the cathode material 513 contacts the frame 520.
• the bottom surface of the portion of the pouch material 518 that extends beyond the anode material 511 and the cathode material 513 can contact an inner wall of the external casing 560.
• a top surface 518b of the portion of the pouch material 518 that extends beyond the anode material 511 and the cathode material 513 can contact the frame 520.
• the top surface of the portion of the pouch material 518 that extends beyond the anode material 511 and the cathode material 513 can contact the external casing 560.
• a bottom surface 518a of the cathode tab 517 contacts the frame 520.
• a top surface 518b of the cathode tab 517 can contact the frame 520.
• the bottom surface of the cathode tab 517 can contact the inner wall of the external casing 560.
• the top surface of the cathode tab 517 can contact the inner wall of the external casing 560.
• a bottom surface 518a of the anode tab 516 contacts the frame 520.
• a top surface 518b of the anode tab 516 can contact the frame 520. In some embodiments, the bottom surface of the anode tab 516 can contact the inner wall of the external casing 560. In some embodiments, the top surface of the anode tab 516 can contact the inner wall of the external casing 560.
• the pouch material 518 folds in a first direction on a first side of the electrochemical cell module 500 and a second direction on a second side of the electrochemical cell module 500, the second side opposite the first side.
• the pouch material 518 on the first side can form an angle with the pouch material 518 on the second side of at least about 150 degrees, at least about 155 degrees, at least about 160 degrees, at least about 165 degrees, at least about 170 degrees, at least about 175 degrees, at least about 180 degrees, at least about 185 degrees, at least about 190 degrees, at least about 195 degrees, at least about 200 degrees, or at least about 205 degrees.
• the pouch material 518 on the first side can form an angle with the pouch material 518 on the second side of no more than about 210 degrees, no more than about 205 degrees, no more than about 200 degrees, no more than about 195 degrees, no more than about 190 degrees, no more than about 185 degrees, no more than about 180 degrees, no more than about 175 degrees, no more than about 170 degrees, no more than about 165 degrees, no more than about 160 degrees, or no more than about 155 degrees. Combinations of the above-referenced angles are also possible (e.g., at least about 150 degrees and no more than about 210 degrees or at least about 160 degrees and no more than about 200 degrees), inclusive of all values and ranges therebetween.
• the pouch material 518 on the first side can form an angle with the pouch material 518 on the second side of about 150 degrees, about 155 degrees, about 160 degrees, about 165 degrees, about 170 degrees, about 175 degrees, about 180 degrees, about 185 degrees, about 190 degrees, about 195 degrees, about 200 degrees, about 205 degrees, or about 210 degrees.
• FIG. 5C shows detail of one of the frames 520.
• the frame 520 includes coupling pegs 521, attachment holes 522, tab passages 523, and a vent hole 524.
• multiple frames 520 can be stacked on top of one another.
• the coupling pegs 521 can aid in coupling one of the frames 520 to another.
• the coupling pegs 521 from a first frame can fit into a cavity on the underside of the coupling pegs 521 from a second frame.
• the attachment holes 522 can allow for the heat sinks 530 and/or the pressure plate 550 to couple to the frames 520 (e.g., via bolts or screws).
• the tab passages 523 are thinned portions of the frame 520, through which tabs (e.g., anode tabs 516 and/or cathode tabs 517) can pass to connect to adjacent cells.
• the tab passages 523 can include insulation material if the frame 520 is metallic.
• the vent hole 524 allows for degassing during production of the electrochemical cell module 500. After production of the electrochemical cell module 500 is complete, the vent hole 524 can be filled (e.g., by a metal).
• the frame can be constructed such that the vent hole 524 aligns or approximately aligns with one or more vent holes in the pouch material of the electrochemical cells 510.
• the vent holes in the pouch material of the electrochemical cells 510 can be the same or substantially similar to the vent holes 219, as described above with reference to FIGS. 2A-2B.
• FIG. 6 is an illustration of an electrochemical cell 610, according to an embodiment.
• the electrochemical cell 610 includes an anode material 611, an anode current collector 612, a cathode material 613, a cathode current collector 614, a separator 615, an anode tab (not shown), a cathode tab 617, and a pouch material 618.
• the electrochemical cell 610 contacts a framing member 620 and a heat sink, and the electrochemical cell 610 the framing member 620, and the heat sink 630 are housed inside an external casing 660.
• the anode material 611, the anode current collector 612, the cathode material 613, the cathode current collector 614, the separator 615, the anode tab, the cathode tab 617, the pouch material 618, the heat sink 630, and the external casing 660 can be the same or substantially similar to the anode material 511, the anode current collector 512, the cathode material 513, the cathode current collector 514, the separator 515, the anode tab, the cathode tab 517, the pouch material 518, the external casing 560, and the as described above with reference to FIGS. 5A-5C.
• anode material 611 the anode current collector 612, the cathode material 613, the cathode current collector 614, the separator 615, the anode tab, the cathode tab 617, the pouch material 618, the heat sink 630, and the external casing 660 are not described in greater detail herein.
• the cathode tab 617 extends through the framing member 620 via a tab passage 623 and contacts the inner wall of the external casing 660.
• the tab passage 623 can be the same or substantially similar to the tab passage 523, as described above with reference to FIGS. 5A-5C.
• the cathode tab 617 can be welded to the inner wall of the external casing 660.
• the cathode tab 617 can be welded to a metal bar (not shown) electrically coupled to a positive terminal (not shown).
• the anode tab can extend through the framing member 620 via a tab passage 623 and contacts the inner wall of the external casing 660.
• the anode tab can be welded to a metal bar (not shown) electrically coupled to a positive terminal.
• FIGS. 7A-7E are illustrations of a method of forming an electrochemical cell module 700, according to an embodiment.
• FIG. 7A shows an auxiliary view of a bottom casing 760a.
• FIG. 7B shows a stack of electrochemical cells 710 with pouch material 718 extending from the electrochemical cells 710.
• the electrochemical cells 710 are shown above the bottom casing 760a and lowered into the bottom casing 760a.
• FIG. 7C shows the stack of electrochemical cells 710 resting in the bottom casing 760a, such that the walls of the bottom casing 760a cause the pouch material 718 to fold upward.
• a top casing 760b is shown above the bottom casing 760a and the electrochemical cells 710.
• the top casing 760b is lowered onto the bottom casing 760a, such that the top casing 760b and the bottom casing 760a fit together. As shown, the top casing 760b is smaller than the bottom casing 760a, such that the top casing 760b fits inside the bottom casing 760a and causes further folds in the pouch material. In some embodiments, the top casing 760b can be larger than the bottom casing 760a, such that the top casing 760b fits around the outside of the bottom casing 760a.
• FIG. 7E shows the fully formed electrochemical cell module 700.
• the bottom casing 760a and/or the top casing 760b can be rigid and non-flexible. In some embodiments, the bottom casing 760a and/or the top casing 760b can be composed of high-density polyethylene (HDPE), polypropylene (PP), or any other suitable casing material.
• HDPE high-density polyethylene
• PP polypropylene
• the bottom casing 760a and/or the top casing 760b can have a thickness of at least about 100 pm, at least about 200 pm, at least about 300 pm, at least about 400 pm, at least about 500 pm, at least about 600 pm, at least about 700 pm, at least about 800 pm, at least about 900 pm, at least about 1 mm, at least about 1.5 mm, at least about 2 mm, at least about 2.5 mm, at least about 3 mm, at least about 3.5 mm, at least about 4 mm, or at least about 4.5 mm.
• the bottom casing 760a and/or the top casing 760b can have a thickness of no more than about 5 mm, no more than about 4.5 mm, no more than about 4 mm, no more than about 3.5 mm, no more than about 3 mm, no more than about 2.5 mm, no more than about 2 mm, no more than about 1.5 mm, no more than about 1 mm, no more than about 900 pm, no more than about 800 pm, no more than about 700 pm, no more than about 600 pm, no more than about 500 pm, no more than about 400 pm, no more than about 300 pm, or no more than about 200 pm.
• the bottom casing 760a and/or the top casing 760b can have a thickness of about 100 pm, about 200 pm, about 300 pm, about 400 pm, about 500 pm, about 600 pm, about 700 pm, about 800 pm, about 900 pm, about 1 mm, about 1.5 mm, about 2 mm, about 2.5 mm, about 3 mm, about 3.5 mm, about 4 mm, about 4.5 mm, or about 5 mm.
• FIGS. 8A-8E are illustrations of a method of forming an electrochemical cell module 800, according to an embodiment.
• FIG. 8A shows a plan view of a bottom casing sheet 860a. As shown, the bottom casing sheet 860a includes perforation lines 861 for folding.
• FIG. 8B shows a stack of electrochemical cells 810 with pouch material 818 extending from the electrochemical cells. The bottom casing sheet 860a is placed below the electrochemical cells 810, while a top casing sheet 860b is placed above the electrochemical cells 810. The bottom casing sheet 860a and the top casing sheet 860b are moved toward the stack of electrochemical cells 810.
• the bottom casing sheet 860a and the top casing sheet 860b can be moved toward the stack of electrochemical cells 810 at the same time. In some embodiments, the bottom casing sheet 860a and the top casing sheet 860b can be moved toward the stack of electrochemical cells 810 at different times.
• FIG. 8C shows the bottom casing sheet 860a folded (i. e. , along the perforation lines 861), such that the bottom casing sheet 860a causes the pouch material 818 to fold.
• the top casing sheet 860b is folded over, such that the top casing sheet 860b contacts the bottom casing sheet 860a and contains the electrochemical cells 810.
• FIG. 8C shows the bottom casing sheet 860a folded (i. e. , along the perforation lines 861), such that the bottom casing sheet 860a causes the pouch material 818 to fold.
• FIG. 8D the top casing sheet 860b is folded over, such that the top casing sheet 860b contacts the bottom casing sheet 860a
• the bottom casing sheet 860a and the top casing sheet 860b are bonded together in bonding regions 865 to form the electrochemical cell module 800.
• the bottom casing sheet 860a and the top casing sheet 860b can be bonded together via tape, adhesive, ultrasonic welding, or any other suitable bonding method, or combinations thereof.
• the bottom casing sheet 860a and/or the top casing sheet 860b can be composed of a flexible material.
• the bottom casing sheet 860a and/or the top casing sheet 860b can be composed of polyethylene terephthalate (PET) or any other suitable flexible material.
• the bottom casing sheet 860a and/or the top casing sheet 860b can have a thickness of at least about 50 pm, at least about 100 pm, at least about 150 pm, at least about 200 pm, at least about 250 pm, at least about 300 pm, at least about 350 pm, at least about 400 pm, at least about 450 pm, at least about 500 pm, at least about 550 pm, at least about 600 pm, at least about 650 pm, at least about 700 pm, at least about 750 pm, at least about 800 pm, at least about 850 pm, at least about 900 pm, or at least about 950 pm.
• the bottom casing sheet 860a and/or the top casing sheet 860b can have a thickness of no more than about 1 mm, no more than about 950 pm, no more than about 900 pm, no more than about 850 pm, no more than about 800 pm, no more than about 750 pm, no more than about 700 pm, no more than about 650 pm, no more than about 600 pm, no more than about 550 pm, no more than about 500 pm, no more than about 450 pm, no more than about 400 pm, no more than about 350 pm, no more than about 300 pm, no more than about 250 pm, no more than about 200 pm, no more than about 150 pm, or no more than about 100 pm.
• the bottom casing sheet 860a and/or the top casing sheet 860b can have a thickness of about 50 pm, about 100 pm, about 150 pm, about 200 pm, about 250 pm, about 300 pm, about 350 pm, about 400 pm, about 450 pm, about 500 pm, about 550 pm, about 600 pm, about 650 pm, about 700 pm, about 750 pm, about 800 pm, about 850 pm, about 900 pm, about 950 pm, or about 1 mm.
• FIGS. 9A-9E are illustrations of a method of forming an electrochemical cell module 900, according to an embodiment.
• the electrochemical cell module 900 includes a plurality of electrochemical cells 910, pouch material 918 extending from the electrochemical cells 910.
• the electrochemical cells 910 and the pouch material 918 can be the same or substantially similar to the electrochemical cells 810 and the pouch material 818, as described above with reference to FIGS. 8A-8E.
• certain aspects of the electrochemical cells 910 and the pouch material 918 are not described in greater detail herein.
• FIG. 9 A shows a single electrochemical cell 910 with the pouch material 918 extending from the electrochemical cell 910.
• FIG. 9B shows an edge of the pouch material 918 partially folded, such that a first portion of the pouch material 918 forms an angle with a second portion of the pouch material.
• FIG. 9C shows the first portion of the pouch material 918 folded over and bonded to the second portion of the pouch material via an adhesive 925.
• FIG. 9D shows a detailed view of box D, as marked in FIG. 9C. As shown, the first portion of the pouch material 918 is folded over and bonded to the second portion of the pouch material 918 via the adhesive 925. In some embodiments, the pouch material 918 can be folded without the adhesive 925.
• FIG. 9E shows multiple electrochemical cells 910 stacked to form the electrochemical cell module 900.
• the stiffness of the folded pouch material 918 can aid in maintaining the alignment of the electrochemical cells 910 when placed inside a casing (not shown).
• the stack of electrochemical cells 910 can be placed in a casing all at once.
• the electrochemical cells 910 can be placed in a casing one by one.
• FIGS. 10A-10C are illustrations of a method of forming an electrochemical cell module 1000, according to an embodiment.
• the electrochemical cell module 1000 includes electrochemical cells 1010 with pouch material 1018.
• the electrochemical cells 1010 and the pouch material 1018 can be the same or substantially similar to the electrochemical cells 918 and the pouch material 918, as described above with reference to FIGS. 9A-9E. Thus, certain aspects of the electrochemical cells 1010 and the pouch material 1018 are not described in greater detail herein.
• FIG. 10A shows a stack of electrochemical cells 1010 with side panels 1067 on either side of the stack of electrochemical cells 1010.
• FIG. 10B shows the edges of the pouch material 1018 in a flattened state upon contact with the side panels 1067.
• FIG. 10C shows the stack of electrochemical cells 1010 encased by the side panels 1067, top panel 1068a, and bottom panel 1068b. As shown, the side panels 1067 contact the edges of the pouch material 1018 and flatten them to reduce the amount of empty space inside the electrochemical cell module 1000. As shown, the side panels 1067 have a curved shape.
• the curved shape of the side panels 1067 helps to corral the edges of the pouch material 1018 near the vertical center of the stack of electrochemical cells 1010 so that the edges of the pouch material 1018 are collected in a common area and do not bend in random directions.
• the side panels 1067 can have a sharp V-shape to corral the edges of the pouch material 1018 together.
• the edges of the pouch material 1018 can be brought together prior to contact with the side panels 1067. In some embodiments, the edges of the pouch material 1018 can be brought together via the use of a removable tool that pushes the edges of the pouch material 1018 close to the vertical center of the stack of electrochemical cells 1010. This can aid in ensuring the edges of the pouch material 1018 are in an intended location when the side panels 1067 are installed.
• FIG. 10C shows the top panel 1068a and the bottom panel 1068b being secured to the side panels 1067.
• the top panel 1068a and the bottom panel 1068b can be secured to the side panels 1067 via a tape and/or an adhesive.
• the top panel 1068a and the bottom panel 1068b can aid in keeping the side panels 1067 secured to the stack of electrochemical cells 1010.
• an adhesive (not shown) can be used to secure the side panels 1067 to the edges of the pouch material 1018 without including the top panel 1068a or the bottom panel 1068b.
• the stack of electrochemical cells 1010 and the side panels 1067 can be placed in a casing (not shown) to form the electrochemical cell module 1000.
• the side panels 1067 can be incorporated into the casing.
• Various concepts may be embodied as one or more methods, of which at least one example has been provided.
• the acts performed as part of the method may be ordered in any suitable way. Accordingly, embodiments may be constructed in which acts are performed in an order different than illustrated, which may include performing some acts simultaneously, even though shown as sequential acts in illustrative embodiments.
• features may not necessarily be limited to a particular order of execution, but rather, any number of threads, processes, services, servers, and/or the like that may execute serially, asynchronously, concurrently, in parallel, simultaneously, synchronously, and/or the like in a manner consistent with the disclosure. As such, some of these features may be mutually contradictory, in that they cannot be simultaneously present in a single embodiment. Similarly, some features are applicable to one aspect of the innovations, and inapplicable to others.
• the disclosure may include other innovations not presently described. Applicant reserves all rights in such innovations, including the right to embodiment such innovations, file additional applications, continuations, continuations-in-part, divisionals, and/or the like thereof. As such, it should be understood that advantages, embodiments, examples, functional, features, logical, operational, organizational, structural, topological, and/or other aspects of the disclosure are not to be considered limitations on the disclosure as defined by the embodiments or limitations on equivalents to the embodiments.
• the terms “about” or “approximately” when preceding a numerical value indicates the value plus or minus a range of 10%.
• a range of values is provided, it is understood that each intervening value, to the tenth of the unit of the lower limit unless the context clearly dictates otherwise, between the upper and lower limit of that range and any other stated or intervening value in that stated range is encompassed within the disclosure. That the upper and lower limits of these smaller ranges can independently be included in the smaller ranges is also encompassed within the disclosure, subject to any specifically excluded limit in the stated range. Where the stated range includes one or both of the limits, ranges excluding either or both of those included limits are also included in the disclosure.
• a reference to “A and/or B”, when used in conjunction with open-ended language such as “comprising” can refer, in one embodiment, to A only (optionally including elements other than B); in another embodiment, to B only (optionally including elements other than A); in yet another embodiment, to both A and B (optionally including other elements); etc.
• the phrase “at least one,” in reference to a list of one or more elements, should be understood to mean at least one element selected from any one or more of the elements in the list of elements, but not necessarily including at least one of each and every element specifically listed within the list of elements and not excluding any combinations of elements in the list of elements.
• This definition also allows that elements may optionally be present other than the elements specifically identified within the list of elements to which the phrase “at least one” refers, whether related or unrelated to those elements specifically identified.
• “at least one of A and B” can refer, in one embodiment, to at least one, optionally including more than one, A, with no B present (and optionally including elements other than B); in another embodiment, to at least one, optionally including more than one, B, with no A present (and optionally including elements other than A); in yet another embodiment, to at least one, optionally including more than one, A, and at least one, optionally including more than one, B (and optionally including other elements); etc.

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• 2022
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