CN120019527A - Battery potting materials with improved metal adhesion - Google Patents

Battery potting materials with improved metal adhesion Download PDF

Info

Publication number
CN120019527A
CN120019527A CN202380064654.8A CN202380064654A CN120019527A CN 120019527 A CN120019527 A CN 120019527A CN 202380064654 A CN202380064654 A CN 202380064654A CN 120019527 A CN120019527 A CN 120019527A
Authority
CN
China
Prior art keywords
battery module
weight
reaction mixture
total weight
components
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202380064654.8A
Other languages
Chinese (zh)
Inventor
T·马修
K·M·利伯拉基
D·D·彼得斯
A·沃尔夫
M·班德尔
C·哈根
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
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 BASF SE filed Critical BASF SE
Publication of CN120019527A publication Critical patent/CN120019527A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • 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
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/08—Processes
    • C08G18/16—Catalysts
    • C08G18/18—Catalysts containing secondary or tertiary amines or salts thereof
    • C08G18/20—Heterocyclic amines; Salts thereof
    • C08G18/2045—Heterocyclic amines; Salts thereof containing condensed heterocyclic rings
    • C08G18/2063—Heterocyclic amines; Salts thereof containing condensed heterocyclic rings having two nitrogen atoms in the condensed ring system
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3203—Polyhydroxy compounds
    • C08G18/3206—Polyhydroxy compounds aliphatic
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3225—Polyamines
    • C08G18/3237—Polyamines aromatic
    • C08G18/324—Polyamines aromatic containing only one aromatic ring
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3271—Hydroxyamines
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/30—Low-molecular-weight compounds
    • C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
    • C08G18/3271—Hydroxyamines
    • C08G18/3278—Hydroxyamines containing at least three hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4804—Two or more polyethers of different physical or chemical nature
    • C08G18/4812—Mixtures of polyetherdiols with polyetherpolyols having at least three hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4804—Two or more polyethers of different physical or chemical nature
    • C08G18/4816—Two or more polyethers of different physical or chemical nature mixtures of two or more polyetherpolyols having at least three hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/4804—Two or more polyethers of different physical or chemical nature
    • C08G18/482—Mixtures of polyethers containing at least one polyether containing nitrogen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40—High-molecular-weight compounds
    • C08G18/48—Polyethers
    • C08G18/50—Polyethers having heteroatoms other than oxygen
    • C08G18/5021—Polyethers having heteroatoms other than oxygen having nitrogen
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6666—Compounds of group C08G18/48 or C08G18/52
    • C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
    • C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6666—Compounds of group C08G18/48 or C08G18/52
    • C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
    • C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
    • C08G18/6677—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203 having at least three hydroxy groups
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6666—Compounds of group C08G18/48 or C08G18/52
    • C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
    • C08G18/6681—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38
    • C08G18/6685—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3225 or polyamines of C08G18/38
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
    • C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
    • C08G18/6666—Compounds of group C08G18/48 or C08G18/52
    • C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
    • C08G18/6681—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38
    • C08G18/6688—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3271
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00—Polymeric products of isocyanates or isothiocyanates
    • C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
    • C08G18/72—Polyisocyanates or polyisothiocyanates
    • C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
    • C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
    • C08G18/7657—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings
    • C08G18/7664—Polyisocyanates or polyisothiocyanates cyclic aromatic containing two or more aromatic rings containing alkylene polyphenyl groups
    • 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
    • H01M50/24—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 adapted for protecting batteries from their environment, e.g. from corrosion
    • 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
    • H01M50/242—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 adapted for protecting batteries against vibrations, collision impact or swelling
    • 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
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H01M50/293—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs characterised by the 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
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/383—Flame arresting or ignition-preventing means
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
    • C08G2110/0041—Foam properties having specified density
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
    • C08G2110/0041—Foam properties having specified density
    • C08G2110/0058—≥50 and <150kg/m3
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
    • C08G2110/0041—Foam properties having specified density
    • C08G2110/0066—≥ 150kg/m3
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G2110/00—Foam properties
    • C08G2110/0083—Foam properties prepared using water as the sole blowing agent
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2200/00—Safety devices for primary or secondary 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
    • H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Sealing Battery Cases Or Jackets (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

The invention relates to a battery module, wherein an electrical unit is potted into a potting material and the potting material is obtained by mixing (a) one or more organic polyisocyanates, (b) one or more polymeric compounds having at least two isocyanate-reactive hydrogen atoms, (c) 0.5 to 15 wt.%, based on the total weight of components a) to f), of one or more chain extenders, (d) optionally one or more crosslinkers, (e) one or more aromatic diamine curing agents, (f) one or more catalysts, (g) 2 to 20 wt.%, based on the total weight of components a) to g), of one or more flame retardants, (H) at least one blowing agent and (i) optionally fillers and/or polyurethane additives to obtain a reaction mixture and curing the reaction mixture, the one or more chain extenders comprising an O-H-chain extender (c 1) and an aromatic diamine curing agent (c 2). The invention also relates to a method for producing a battery module, wherein the electrical units are potted in a potting material, and the potting material is obtained by inserting a reaction mixture according to the invention into the spaces between adjacent electrical units of a battery housing in which the electrical units are arranged and curing the reaction mixture.

Description

Battery potting material with improved metal adhesion
The invention relates to a battery module, wherein an electrical unit is potted into a potting material and the potting material is obtained by mixing (a) one or more organic polyisocyanates, (b) one or more polymeric compounds having at least two isocyanate-reactive hydrogen atoms, (c) 0.5 to 15 wt.%, based on the total weight of components a) to f), of one or more chain extenders, (d) optionally one or more crosslinkers, (e) one or more catalysts, (f) 2 to 20 wt.%, based on the total weight of components a) to f), of one or more flame retardants, (g) at least one blowing agent and (H) optionally fillers and/or polyurethane additives to give a reaction mixture and curing the reaction mixture, the one or more chain extenders comprising an O-H-chain extender (c 1) and an aromatic diamine hardener (c 2). The invention also relates to a method for producing a battery module, wherein the electrical cells are potted in a potting material, and the potting material is obtained by inserting a reaction mixture according to the invention into the spaces between adjacent electrical cells of a battery housing in which the electrical cells are arranged and curing the reaction mixture.
There is a very rapid transition from internal combustion engines to electric vehicles in the automotive industry. The design of the battery can be very different and is typically based on three types of battery cells, prismatic, pouch or cylindrical cells. In particular for the cell-to-group design of cylindrical cells, but not limited thereto, there are foams described in the literature that fill the cavities between cells. The primary purpose of the foam is to insulate against heat to prevent chain reaction and cell immobilization in the event of thermal runaway. Furthermore, the task of the foam is to mechanically stabilize the battery by stiffening the battery and minimizing vibrations.
Polyurethane-based potting foams are disclosed, for example, in US 2012/0003508. This document discloses an energy storage device comprising a foam, which may be a polyurethane foam containing phosphate esters as flame retardants [0043]. The foam is described as electrically insulating and exhibits a thermal conductivity between 0.02W/mK and 1.0W/mK. The function of the foam is to resist the propagation of fire to the other generators of the battery by covering the side walls of the container of each generator with such foam. US2012/0003508 provides no further details regarding the foam or its mechanical properties.
EP 3753056 discloses a battery module comprising a polyurethane based potting compound which reacts with foam having a density of less than 0.5g/cm 3 and contains a liquid flame retardant and additives such as chain extenders. The electrical cells embedded in the foam are described as cylinders. After complete curing, the potting compound may have a degree of elasticity, thereby dampening the impact or vibration imparted to the battery module. The packaging of the battery cells ensures a suitable level of protection, such as a suitable amount of structural stability and/or a suitable amount of flame retardancy, to help reduce the likelihood of uncontrolled fires from the battery module.
WO2020/044744 solves the shrinkage problem of foams containing flame retardants. This shrinkage can lead to cell deformation and formation of gaps at the cells. The formation of this gap reduces the fire spread properties. To prevent shrinkage, WO2020/044744 teaches the application of 20 to 150 parts by weight of polyol (based on 100 parts by weight of flame retardant) and 25 to 75% by weight of flame retardant (based on the total mass of the potting material). The polyol contains 70 to 100 parts by weight of a polyol having a molecular weight of 2000 or more and preferably a polyol having a molecular weight of 200 or less.
CN109053993 discloses a protective material for power cells using water as a blowing agent. In example 1, a polyol component comprising polyol, catalyst, water and butanediol was mixed with an isocyanate component comprising MDI using a mixing ratio of 100:20. CN109053993 does not disclose the addition of flame retardants.
CN109251303 discloses a flame-retardant heat-insulating material based on water-blown polyurethane for power cells. The polyol and polyisocyanate components are mixed in a mixing ratio of 100:20 to 100:60.
CN111607351 discloses a potting material for battery modules, which potting material comprises an organic polyisocyanate, a polyether polyol, a chain extender, a flame retardant and a catalyst. CN111607351 does not disclose the addition of blowing agents and thus polyurethane.
It is known to exhibit very weak adhesion properties on metals, in particular on steel. The housing of the battery cell is often composed ofAnd (5) preparing a base material.Is electroplated nickel diffusion annealed steel. Thus, the first and second substrates are bonded together,The surface is often the surface to which the battery potting foam must adhere. The problem to be solved is to improve the adhesion of polyurethane foam to such surfaces to ensure a better fixation of the foam to the unit and to prevent gap formation. This increases the safety and life of the entire battery.
The object of the present invention is to improve the adhesion of polyurethane foams to metal surfaces, in particular to steel or steelThe adhesion of the surface and thus the lifetime and safety of the whole battery are increased. It is another object of the present invention to reduce the amount of flame retardant in the potting material while maintaining fire spread resistance properties and to provide foams having excellent properties in terms of adhesion to cells, vibration damping and impact adsorption.
The object of the invention has been solved by a battery module in which the electrical unit is potted into a potting material and the potting material is obtained by mixing (a) one or more organic polyisocyanates, (b) one or more polymeric compounds having at least two isocyanate-reactive hydrogen atoms, (c) 0.5 to 15% by weight, based on the total weight of components a) to f), of one or more chain extenders, (d) optionally one or more crosslinking agents, (e) one or more catalysts, (f) 2 to 20% by weight, based on the total weight of components a) to f), of one or more flame retardants, (g) at least one blowing agent and (H) optionally fillers and/or polyurethane additives to give a reaction mixture and curing the reaction mixture, the one or more chain extenders comprising an O-H-chain extender (c 1) and an aromatic diamine curing agent (c 2). The invention also relates to a method for producing a battery module, wherein the electrical cells are potted in a potting material, and the potting material is obtained by inserting a reaction mixture according to the invention into the spaces between adjacent electrical cells of a battery housing in which the electrical cells are arranged and curing the reaction mixture.
The battery module according to the present invention comprises several electrical units. In a preferred method, the cells are cylindrical in shape. In a preferred embodiment, the outer surface of the unit is metal, preferably steel and particularly preferably-Steel. Such battery modules may be applied to a range of mobile devices and are particularly suitable for electric vehicles such as electric automobiles. The cells of the battery module according to the present invention are positioned in a potting material, and the potting material is polyurethane foam. Such polyurethane foam is obtained by the process according to the invention. The foam potting compound preferably has a flame retardancy of at least V2 grade as measured by the UL 94 plastic flammability test. The battery cells are preferably surrounded by a battery case. The battery case may be configured to provide protection from moisture, heat, cold, or any other potential factor that may cause damage to the electrical unit. In a preferred embodiment, the shell includes a bottom, a top, and a wall extending between the bottom and the top. The bottom may be the positive terminal of the electrical unit or may be the negative terminal of the electrical unit, depending on the desired orientation. The bottom of the electrical unit is positioned in the potting compound. The potting compound occupies a portion of the interior volume of the battery case and extends a substantially equal distance from the bottom toward the top of the battery case at various points along the wall. Typically, the top of the potting compound is lower than the top of the electrical unit. Alternatively, the top of the electrical unit may be lower than the top of the potting compound. The battery module may be used to power a number of applications such as, but not limited to, household appliances, outdoor electrical equipment, or vehicles such as automobiles or boats.
The size of the gap between adjacent electrical units and/or battery housings may be selected based on several variables, including, but not limited to, the size and/or weight of each electrical unit, the operating temperature of each electrical unit, the size of each electrical unit, and the intended use of the battery module. In some examples, the size of the space between adjacent electrical units may be from greater than 0mm, about 0.25mm, about 0.50mm, about 0.75mm to about 1.0mm, about 1.5mm, or about 2.0mm, or a length between any pair of the foregoing values.
The hardness of the polyurethane foam as the potting material of the battery module is preferably 40shore a to 60shore d. Therefore, damage to the battery caused by stress at the time of curing the resin can be reduced, and external impact received by the battery pack can be appropriately absorbed. In addition, the potting material imparts structural rigidity and stability to the overall battery module.
The potting material is obtained by mixing (a) one or more organic polyisocyanates, (b) one or more polymeric compounds having at least two isocyanate-reactive hydrogen atoms, (c) 0.5 to 15% by weight, based on the total weight of components a) to f), of one or more chain extenders, (d) optionally one or more crosslinkers, (e) one or more catalysts, (f) 2 to 20% by weight, based on the total weight of components a) to f), of one or more flame retardants, (g) at least one blowing agent and (H) optionally fillers and/or polyurethane additives to give a reaction mixture and curing the reaction mixture, the one or more chain extenders comprising an O-H-chain extender (c 1) and an aromatic diamine hardener (c 2). The reaction mixture may flow through the gaps between adjacent electrical units and settle at a level around the electrical units and in the gaps or spaces defined between the electrical units. For example, the reaction mixture may be poured into a battery case in which the electrical units are arranged. The liquid reaction mixture has sufficient fluidity prior to curing to allow the liquid potting composition to flow through the space defined by the gaps between adjacent electrical cells and/or between the electrical cells and the battery case and settle at a substantial level before its viscosity increases significantly as a result of the hardening process.
In a preferred embodiment, the potting material according to the invention has a density of 20g/dm 3 to 800g/dm 3, more preferably 50g/dm 3 to 600g/dm 3, even more preferably 100g/dm 3 to 500g/dm 3 and particularly preferably 100g/dm 3 to 300g/dm 3.
The polyisocyanate component (a) used to produce the polyurethane of the present invention according to the present invention comprises any polyisocyanate known to be used to produce polyurethanes. These polyisocyanates include aliphatic, cycloaliphatic and aromatic difunctional or polyfunctional isocyanates known from the prior art, and also any desired mixtures thereof. Examples are diphenylmethane 2,2' -diisocyanate, 2,4' -diisocyanate and 4,4' -diisocyanate, mixtures of monomeric diphenylmethane diisocyanate with diphenylmethane diisocyanate homologues having a relatively large ring number (polymeric MDI), isophorone diisocyanate (IPDI) and oligomers thereof, toluene 2, 4-and 2, 6-diisocyanate (TDI) and mixtures of these, tetramethylene diisocyanate and oligomers thereof, hexamethylene Diisocyanate (HDI) and oligomers thereof, naphthylene Diisocyanate (NDI) and mixtures thereof.
Toluene 2, 4-diisocyanate and/or 2, 6-diisocyanate (TDI) or mixtures thereof, monomeric diphenylmethane diisocyanate and/or diphenylmethane diisocyanate homologues (polymeric MDI) and mixtures thereof are preferably used. Other possible isocyanates are described by way of example in "polyurethane handbook (Polyurethanes Handbook)", karl-hanzel press (CARL HANSER VERLAG), 2 nd edition 1994, chapters 3.2 and 3.3.2.
In a particularly preferred embodiment, the polyisocyanate (a) comprises at least one isocyanate selected from the group consisting of monomeric MDI, polymeric MDI, MDI-based prepolymers or a mixture of at least two of these. At least 80% by weight, preferably at least 90% by weight and more preferably 100% by weight of isocyanate (a) consists of monomeric MDI, polymeric MDI, MDI-based prepolymers or a mixture of at least two of these.
The polyisocyanate component (a) used may be used in the form of a polyisocyanate prepolymer. These polyisocyanate prepolymers can be obtained by reacting an excess of the above-mentioned polyisocyanate (component (a-1)) with a polymeric compound (b) having a group reactive with isocyanate (component (a-2)) and/or with a chain extender (C) (component (a-3)) at a temperature of, for example, 30 ℃ to 100 ℃, preferably about 80 ℃.
Polymeric compounds (a-2) having groups reactive toward isocyanates are known to the person skilled in the art and are described by way of example in "polyurethane handbook", karl-Hanzel Press, 2 nd edition 1994, chapter 3.1, it being possible, for example, to use the polymeric compounds described under (b) having groups reactive toward isocyanates as polymeric compounds (a-2) having groups reactive toward isocyanates.
In a preferred embodiment, the content of monomeric MDI and polymeric MDI in component (a) is at least 35 wt%, more preferably 40 to 70 wt%, more preferably 41 wt% bis60 wt%, and particularly preferably 42 to 48 wt%, based on the total weight of components (a) to (f). According to the invention, the amounts of monomeric and polymeric MDI in component (a) include monomeric and polymeric MDI (a-1) used to produce the polyisocyanate prepolymers, whether it is present as a separate molecule or as a reaction product with polymeric compound (a-2).
As polymeric compound (b) having groups reactive towards isocyanates, any known compound having at least two hydrogen atoms reactive towards isocyanates may be used, such as those having a functionality of from 2 to 8 and a number average molar mass of from 400g/mol to 15 g/mol, for example compounds selected from polyether polyols, polyols based on fatty acids, polyols based on polybutadiene, polyester polyols and mixtures thereof may be used.
For example, polyether alcohols are produced from epoxides, for example propylene oxide and/or ethylene oxide, or from tetrahydrofuran with starter compounds having from 1 to 8, preferably from 2 to 6, reactive hydrogen atoms combined, or starter molecule mixtures having from 1.5 to 8, preferably from 2 to 6, reactive hydrogen atoms combined, which exhibit hydrogen activity, in the presence of catalysts. As starter molecules, use may be made, for example, of aliphatic alcohols, phenols, amines, carboxylic acids, water or compounds based on natural substances, such as sucrose, sorbitol or mannitol. If a mixture of starting molecules having different functionalities is used, partial functionalities can be obtained. The effect on functionality, for example by side reactions, is not considered in the nominal functionality. Examples of suitable catalysts are basic catalysts or double metal cyanide catalysts, as described by way of example in PCT/EP2005/010124, EP 90444 or WO 05/090440.
The polyesterols are produced by way of example from aliphatic or aromatic dicarboxylic acids and polyols, polythioether polyols, polyesteramides, hydroxylated polyacetals and/or hydroxylated aliphatic polycarbonates, preferably in the presence of esterification catalysts. Other possible polyols are mentioned by way of example in "handbook of Polyurethanes", volume 7, polyurethane [ Polyurethanes ] ", karl-hanzel press, 2 nd edition 1993, chapter 3.1.
In addition to the polyetherols and/or polyesterols described, other materials which can be used are filled polyols as polymer polyols, such as polymer polyetherols or polymer polyesterols. These compounds preferably comprise dispersed particles made of thermoplastics, for example, dispersed particles composed of olefinic monomers such as acrylonitrile, styrene, (meth) acrylate, (meth) acrylic acid and/or acrylamide. These polyols containing fillers are known and commercially available. The production processes of these are described by way of example in DE 111 394, US 3 304 273, US 3 383 351, US 3 523 093, DE 1152 536, DE 1152 537, WO 2008/055952 and WO 2009/128279.
In a particularly preferred embodiment of the invention, component (b) comprises a polyether alcohol, and more preferably does not comprise a polyester alcohol.
Preferably, the polymeric compound (b) having groups reactive towards isocyanates comprises at least one polyether alcohol (b 1) having a functionality of from 2 to 4 and a hydroxyl number of from 20mg KOH/g to 60mg KOH/g. The polyether alcohols (b 1) contain preferably more than 50%, more preferably more than 70%, even more preferably more than 80% and particularly preferably more than 90% of primary hydroxyl groups, based on the total number of hydroxyl groups in the polyether (b 1).
If a polymer polyol is used, the polymer polyol is applied in an amount of preferably 1 to 30 wt%, more preferably 2 to 20 wt%, even more preferably 3 to 15 wt% and most preferably 4 to 10wt%, each based on the total weight of components (a) to (f).
The chain extender (c) used here may be a compound having a molar mass of less than 400g/mol, preferably less than 300g/mol, more preferably from 62g/mol to 250g/mol, which compound has two groups reactive towards isocyanates, for example OH-, SH-or NH 2 -groups. According to the invention, the chain extender (c) is used in an amount of from 0.5 to 15% by weight, preferably from 2 to 15% by weight, more preferably from 3 to 15% by weight and particularly preferably from 5 to 12% by weight, each based on the total weight of components a) to (f).
As the chain extender (c), a chain extender known in polyurethane production can be used. The chain extender (c) comprises a compound (c 1) having two OH groups (hereinafter referred to as OH-chain extender) and an aromatic diamine (c 2) (hereinafter referred to as aromatic diamine curing agent). In a preferred embodiment, the OH-chain extender (c 1) may be selected from the group consisting of monoethylene glycol, diethylene glycol, 1, 2-propanediol, 1, 3-propanediol, 1, 4-butanediol, 1, 3-butanediol, 1, 5-pentanediol, 1, 6-hexanediol, neopentyl glycol, tetraethylene glycol, dipropylene glycol, cyclohexane diol or mixtures thereof. In a more preferred embodiment, the OH-chain extender is selected from the group consisting of monoethylene glycol, diethylene glycol, dipropylene glycol, 1, 2-propanediol, 1, 3-propanediol, 1, 4-butanediol, 1, 6-hexanediol or mixtures thereof. Other possible low molecular weight chain extenders are mentioned by way of example in "polyurethane handbook", karl-Hanzel Press, 2 nd edition 1994, chapters 3.2 and 3.3.2.
The aromatic diamine curing agent (c 2) is selected from chain extenders based on radical aromatic amines, such as aromatic diamines, such as diethyltoluenediamine (DETDA). In a preferred embodiment, only OH-chain extenders (c 1) and aromatic diamine curing agents (c 2) are used as chain extenders (c). A preferred example of an aromatic diamine curing agent is DETDA. If used, the aromatic diamine curing agent (c 2) is applied in an amount of preferably 0.5 to 4 wt%, preferably 1 to 3wt%, each based on the total weight of compounds (a) to (f), provided that the total amount of chain extender (c) does not exceed 15 wt%, preferably 12 wt%, each based on the total weight of compounds (a) -compound (f)). In a preferred embodiment, the ratio of OH-chain extender (c 1) to aromatic diamine hardener (c 2) is between 200:1 and 1:1, preferably between 100:1 and 2:1 and particularly preferably between 50:1 and 3:1.
In addition to the chain extender (c), a crosslinking agent (d) may be added to the mixture. As chain extender, the crosslinking agent used in the present invention is a compound having a molar mass of less than 400g/mol, preferably less than 300g/mol and more preferably from 60g/mol to 250g/mol, which compound has at least three groups reactive towards isocyanates. Examples of crosslinking agents are glycerol, trimethylolpropane, pentaerythritol and triethanolamine. Other possible low molecular weight crosslinkers are mentioned by way of example in "polyurethane handbook", karl-Hanzel Press, 2 nd edition 1994, chapter 3.2 and 3.3.2.
In a preferred embodiment of the invention, at least one crosslinking agent (d) is added to the mixture according to the invention in addition to the at least one chain extender (c). In a preferred embodiment, the mixture comprises from 1 to 8% by weight, more preferably from 2 to 5% by weight, based on the total weight of components a) to (f), of at least one crosslinking agent.
The catalyst (e) greatly accelerates the reaction of the polyol (b) and optionally the chain extender (c) and the crosslinking agent (d), and also the chemical blowing agent (e) with the polyisocyanate (a). As catalyst (e), any catalyst known in the art of polyurethane catalysts may be used. These catalysts include basic amine catalysts and metal-based catalysts. In a preferred embodiment, the catalyst comprises an incorporable amine catalyst. In a further preferred embodiment, the catalyst comprises a delayed action catalyst. Delayed action catalysts are well known in the art and provide long open time of the reaction mixture at room temperature and rapid cure at elevated temperatures.
The amine catalysts which can be incorporated have at least one, preferably from 1 to 8 and particularly preferably from 1 to 2, groups which are reactive toward isocyanates, for example primary amine groups, secondary amine groups, hydroxyl groups, amide groups, or urea groups, preferably primary amine groups, secondary amine groups or hydroxyl groups. The amine catalysts which can be incorporated are mainly used for producing low-emission polyurethanes, in particular for automotive interior parts. These catalysts are known and are described by way of example in EP 1888664. These include compounds which preferably contain one or more tertiary amino groups in addition to the groups reactive towards isocyanates. Preferably, at least one tertiary amino group of the incorporable catalyst carries at least two aliphatic hydrocarbon moieties, preferably each moiety having from 1 to 10 carbon atoms, particularly preferably each moiety having from 1 to 6 carbon atoms. It is particularly preferred that the tertiary amino group carries two moieties independently selected from methyl and ethyl moieties and carries another organic moiety. Examples of incorporatable catalysts which may be used are bis-dimethylaminopropyl urea, bis (N, N-dimethylaminoethoxyethyl) carbamate, dimethylaminopropyl urea, N, N, N-trimethyl-N-hydroxyethyl bis (aminopropyl ether), N, N, N-trimethyl-N-hydroxyethyl bis (aminoethyl ether), diethylethanolamine, bis (N, N-dimethyl-3-aminopropyl) amine, dimethylaminopropylamine, 3-dimethylaminopropyl-N, N-dimethylpropane-1, 3-diamine, dimethyl-2- (2-amino-ethoxyethanol) and (1, 3-bis (dimethylamino) propan-2-ol), N, N-bis (3-dimethylaminopropyl) -N-isopropanolamine, bis (dimethylaminopropyl) -2-hydroxyethyl amine, N, N, N-trimethyl-N- (3-aminopropyl) -bis (amino-ethyl ether), 3-dimethylaminoisopropyl diisopropanolamine and mixtures thereof.
Examples of delayed action catalysts are carboxylates used in conventional basic amine catalysts. The carboxylate salt of the basic amine catalyst is obtained here, for example, by mixing the amine catalyst with a carboxylic acid, optionally in the presence of an alcohol such as ethylene glycol. If an alcohol is defined as belonging to the chain extender (c) or the crosslinking agent (d), the amounts of crosslinking agent and chain extender are taken into account when calculating the amounts in the reaction mixture.
Basic amine catalysts suitable for the production of delayed action catalysts are described by way of example in polyurethane handbook, karl-hanzel press, 2 nd edition 1994, chapter 3.4.1. Examples of these include amidines such as 2, 3-dimethyl-3, 4,5, 6-tetrahydropyrimidine, tertiary amines such as triethylamine, tributylamine, dimethylbenzylamine, N-methylmorpholine, N-ethylmorpholine, N-cyclohexylmorpholine, N, N, N ', N' -tetramethylethylenediamine, N, N, N ', N' -tetramethylbutanediamine, pentamethyldiethylenetriamine, tetramethyldiaminoethyl ether, bis (dimethylaminopropyl) urea, N, N-bis (3-dimethylaminopropyl) -N-isopropanolamine, dimethylpiperazine, 1, 2-dimethylimidazole, 1-azabicyclo [3.3.0] octane and preferably 1, 4-diazabicyclo [2.2.2] octane, and alkanolamine compounds such as triethanolamine, triisopropanolamine, N-methyldiethanolamine and N-ethyldiethanolamine, N, N-bis (3-dimethylaminopropyl) -N-isopropanolamine and dimethylethanolamine. In particular, basic amine catalysts having at least one, preferably exactly one, isocyanate-reactive group are used here, examples being N, N-bis (3-dimethylaminopropyl) -N-isopropanolamine. The catalysts may be used individually or in the form of mixtures.
The carboxylic acids used are preferably those having a molar mass of less than 300 g/mol. It is particularly preferred here to use saturated and unsaturated aliphatic monocarboxylic acids having 1 to 18 carbon atoms, such as formic acid, acetic acid, cyanoacetic acid or 2-ethylhexanoic acid, aromatic carboxylic acids, aliphatic, saturated and unsaturated dicarboxylic acids having 2 to 16 carbon atoms, or tricarboxylic acids, or mixtures thereof. Derivatives of the above carboxylic acids may also be used. Other preferred carboxylic acids used are dicarboxylic acids of the general formula HOOC- (CH 2)n -COOH, where n is an integer from 2 to 14.
The ratio of acid to amine catalyst is here chosen in such a way that the number of equivalents of acid groups of the carboxylic acid contained is from 0.5 to 1.5, preferably from 0.7 to 1.3, particularly preferably from 0.90 to 1.10, in particular from 0.95 to 1.05, equivalents based on 1 equivalent of amine of the amine catalyst.
Examples of the concentration at which the carboxylate of the amine catalyst (c) can be used are 0.001 to 10% by weight, preferably 0.05 to 5% by weight and particularly preferably 0.05 to 2% by weight, based on the weight of components (b) to (f).
Conventional non-incorporable amine catalysts may include amidines such as 2, 3-dimethyl-3, 4,5, 6-tetrahydropyrimidine, tertiary amines such as triethylamine, tributylamine, dimethylbenzylamine, N-methyl-, N-ethyl-and N-cyclohexylmorpholine, N, N, N ', N' -tetramethylethylenediamine, N, N, N ', N' -tetramethylbutanediamine, N, N ', N' -tetramethylhexamethylenediamine, pentamethyldiethylenetriamine, tetramethyldiaminoethyl ether, bis (dimethylaminopropyl) urea, dimethylpiperazine, 1, 2-dimethylimidazole, 1-azabicyclo [3.3.0] octane and preferably 1, 4-diazabicyclo [2.2.2] octane, and alkanolamine compounds such as triethanolamine, triisopropanolamine, N-methyl-and N-ethyldiethanolamine and dimethylethanolamine.
Suitable metal-based catalysts include organometallic compounds, preferably organotin compounds, such as tin (II) salts of organic carboxylic acids, for example tin (II) acetate, tin (II) octoate, tin (II) ethylhexanoate and tin (II) laurate, and dialkyltin (IV) salts of organic carboxylic acids, for example dibutyltin diacetate, dibutyltin dilaurate, dibutyltin maleate and dioctyltin diacetate, and bismuth carboxylates, such as bismuth (III) neodecanoate, bismuth 2-ethylhexanoate and bismuth octoate, or mixtures thereof. The organometallic compounds may be used alone or preferably in combination with strongly basic amines. In a particularly preferred embodiment, the catalyst (e) used comprises or consists of a delayed action catalyst and a particularly preferably incorporable delayed action catalyst.
If catalysts (e) are used, these can be used as catalysts or in combination as catalysts, respectively, by way of example, in concentrations of from 0.001% to 5% by weight, in particular from 0.05% to 2% by weight, based on the weight of component (b).
As flame retardants (f), it is generally possible to use all flame retardants known from the prior art. Suitable flame retardants are, for example, bromates, brominated ethers or brominated alcohols such as dibromoneopentyl alcohol, tribromoneopentyl alcohol and 2- (2-hydroxyethoxy) ethyl 2-hydroxypropyl 3,4,5, 6-tetrabromophthalate (PHT-4-diol TM), and chlorinated phosphates such as tris (2-chloroethyl) phosphate, tris (2-chloroisopropyl) phosphate (TCPP), tris (1, 3-dichloropropyl) phosphate, tricresyl phosphate, 10-tris (2, 3-dibromopropyl) phosphate, tetrakis (2-chloroethyl) ethylene diphosphate, dimethylmethane phosphonate, diethanolamine methylphosphonate diethyl ester and the halogenated flame retardant polyols commercially available. As other phosphates or phosphonates, diethyl ethane phosphonate (DEEP), resorcinol bis (diphenyl phosphate) (RDP), triethyl phosphate (TEP), dimethylpropyl phosphate (DMPP), diphenyl cresyl phosphate (DPK) may be used as liquid flame retardant. In a preferred embodiment, the flame retardant comprises at least one group reactive towards isocyanate such as hydroxyl groups (-OH) and/or a molecular weight of at least 350 g/mol.
In addition to the flame retardants already mentioned, inorganic or organic flame retardants such as red phosphorus, additives containing red phosphorus, aluminum oxide hydrate, antimony trioxide, arsenic oxide, ammonium polyphosphate and calcium sulfate, or cyanuric acid derivatives such as melamine, or mixtures of at least two of these flame retardants such as ammonium polyphosphate and melamine, and optionally corn or ammonium polyphosphate, melamine can be used as flame retardant (f) according to the invention.
In a preferred embodiment of the present invention, the flame retardant (f) comprises at least one flame retardant which is liquid at room temperature. Particularly preferred are RDP, TCPP, TEP, DEEP, DMPP, DPK, PHT diol TM, brominated ethers and tribromoneopentyl alcohol, especially TCPP, TEP and PHT4 diol TM and especially TCPP as liquid flame retardants. In a particularly preferred embodiment, the flame retardant (c) comprises a phosphorus-containing flame retardant and the content of phosphorus is preferably from 0.1 to 3% by weight, more preferably from 0.1 to 1% by weight and particularly preferably from 0.1 to 0.5% by weight, based on the total weight of components (a) to (f). In a preferred embodiment, the flame retardant comprises a mixture of liquid flame retardant and solid flame retardant.
According to the invention, the proportion of flame retardant (f) is from 2 to 20% by weight, preferably from 3 to 18% by weight, particularly preferably from 4 to 16% by weight, and even more preferably from 4 to 10% by weight, and particularly preferably 4% by weight bis 8% by weight, based on the total weight of components (a) to (f).
As blowing agent (g), any blowing agent known in the polyurethane art can be used. These may include chemical and/or physical blowing agents. These blowing agents are described by way of example in the handbook of polyurethanes, karl-Hanzel Press, 2 nd edition 1994, chapter 3.4.5. The term chemical blowing agent is intended herein to mean a compound which forms gaseous products by reaction with isocyanates. Examples of such blowing agents are water and carboxylic acids. The term physical blowing agent means a compound that dissolves or emulsifies in the starting materials for the polyurethane production reaction and evaporates under the polyurethane forming conditions. These are by way of example hydrocarbons, halogenated hydrocarbons, hydrogen halide olefins and other compounds, examples being perfluorinated alkanes such as perfluorohexane, chlorofluorocarbons and ethers, esters, ketones, acetals and/or liquid carbon dioxide. Any desired amount of blowing agent may be used herein. The amount of blowing agent is preferably such that the density of the polyurethane foam obtained is from 10g/L to 850g/L, in particular from 20g/L to 800g/L, and especially from 25g/L to 500g/L. It is particularly preferred to use an aqueous blowing agent, more preferably blowing agent (g) is composed of water.
Fillers and/or polyurethane additives (h) may also be used. Any filler and additive known for producing polyurethanes can be used. Mention may be made, by way of example, of surface-active substances, foam stabilizers, cell regulators, exfoliants, inorganic and organic fillers, dyes, pigments, hydrolysis stabilizers, fungistatic substances and bacteriostatic substances. These substances are known and are described by way of example in "polyurethane handbook", karl-hanzel press, 2 nd edition 1994, chapter 3.4.4 and chapters 3.4.6 to 3.4.11.
The amounts of polyisocyanate (a), the one or more polymers (b) having at least two isocyanate-reactive hydrogen atoms, the one or more chain extenders (c), the one or more crosslinkers (d), the one or more catalysts (e), the one or more flame retardants (f), the at least one blowing agent (g) and the filler and/or polyurethane additive (h), if present, are generally such that the equivalent ratio of NCO groups of the polyisocyanate (a) to the total number of reactive hydrogen atoms of components (b) to (h) is preferably from 0.75 to 1.5:1, more preferably from 0.80 to 1.2:1, and particularly preferably from 0.85 to 1.10. The 1:1 ratio corresponds here to an isocyanate index of 100.
In order to produce a battery module according to the invention, the reaction mixture according to the invention can flow through the gaps between adjacent electrical units and settle at a level around the electrical units and in the gaps or spaces defined between the electrical units. For example, the potting composition may be poured into a battery case where the electrical units are arranged. The liquid potting composition has sufficient fluidity prior to curing to allow the liquid potting composition to flow through the space defined by the gaps between adjacent electrical units and/or between the electrical units and the battery case. The liquid reaction mixture is sufficiently fluid to settle at a substantial level prior to curing to form the potting material.
In a preferred embodiment, the electrical unit is cleaned, for example by plasma treatment, before being contacted with the reaction mixture according to the invention.
The potting material according to the invention shows very good adhesion to metal such as steel surfaces and in particular to Hilumin. This reduces the formation of undesirable gaps between the unit and the potting material, thereby improving flame retardancy, vibration damping and shock absorption. This allows for the addition of smaller amounts of flame retardant while maintaining flame retardant properties. On the other hand, smaller amounts of flame retardant improve the mechanical properties of the potting material. In addition, the electrical units are thermally insulated from each other and the potting material according to the invention provides high impact absorbing properties and high vibration damping. In addition, the potting material imparts structural rigidity and stability to the overall battery module. Furthermore, the heat generated during the production of the foam according to the invention is low in order to protect the individual battery cells from excessive thermal stresses during the manufacturing process.
The present invention will be described below with reference to examples.
Examples:
Raw materials:
polyol 1 polyether alcohol having a number average molecular weight of 2000G/mol, a functionality of 2 and an OH# of 55mgKOH/G
Polyol 2 polyether triol having a number average molecular weight of 700g/mol, a functionality of 3 and an OH# of 239mgKOH/g based on glycerol and propylene oxide;
Polyol 3A TMP-and propylene oxide-based polyether alcohol having a functionality of 3 and an OH# of 860mgKOH/g
Polyol 4-polyether alcohol based on ethylenediamine and propylene oxide with a functionality of 4 and an OH# of 753mgKOH/g
Crosslinking agent 1 glycerin, 99.7% purity
Crosslinking agent 2 triethanolamine 85% triethanolamine and 15% monoethanolamine
Additive 1: 200 fumed silica from win-win (Evonik)
Additive 2: purchased from sigma aldrich' SigmaAldrich) zinc stearate
Additive 3, titanium dioxide, pigment and nucleating agent
Additive 4: DC5160: from Dow Chemicals (Dow Chemicals) foam cell surfactant)
Additive 5:2,2, 4-trimethyl-1, 3-pentanediol diisobutyrate
Catalyst 1 Lupragen N201, amine catalyst from Basf (BASF)
Chain extender 1 monoethylene glycol
Chain extender 2 diethylene glycol
Chain extender 3:1, 4-butanediol
Chain extender 4 Diethyltoluenediamine (from Yabao Co (Abermale))100)
Chain extender 5 dipropylene glycol
Flame Retardant (FR): TCPP, tris (2-chloroisopropyl) phosphate, flame retardant from ICL;
Water tap water
Isocyanate polymeric MDI having an average functionality of 2.7 and an NCO value of 31,5
Polyurethane foams were prepared according to the formulations given in tables 1 and 2 and tested for adhesion according to the following test procedure:
determination of the adhesion of foam systems to steel surfaces
Preparation of the sample:
the materials used are as follows:
0.5mm to 2mm thick metal specimens 25X 100mm cleaned with isopropanol
Foaming container with a diameter of 103mm and a height of 10mm
Support with a diameter of 103mm and a height of 10mm
-Separating weights of dimensions width x height x length 60 x 20 x 150mm and weighing 1300g, wrapped with teflon foil
Weights of dimensions width x height x length 40 x 20 x 150mm and weight 870g
Separator plate with dimensions width x height x length 30 x 0.5 x 40mm
Retractor
Adhesive arrangement of foam system and metal sample
To test the adhesion of the foam system to the metal surface, the metal coupon was completely wetted on one side with the foaming foam system from below on the intended surface. In the test setup, as shown in fig. 1 and 2, the foaming container was placed on a flat surface with the opening facing upwards and a separation weight was placed from the edge of the foaming container to the center. The metal coupon is placed on a support with a spacer and locked with a weight. The free ends of the metal samples were positioned to have an overlap length of 3.0cm above the foaming vessel.
Sample generation
The foam system was freshly prepared in a beaker by providing the polyol component and adding the isocyanate component, then mixing with a Vollrath stirrer at 1920rpm for 10 seconds. 23g of fresh foam system were then poured into the foaming vessel. The foaming vessel with the fresh foam system was provided with a separation weight and a metal test piece was placed at a position above the foaming vessel with an overlap length of 30mm with the foaming vessel. The fresh foam system began to rise and wet the metal coupon completely from below. Excess foam system is raised to the side of the metal coupon without wetting the metal coupon from above. After curing of the foaming system, the separation weights were removed and the composite of foaming vessel, foaming system and adhered metal specimen was stored in a climate at 20 ℃ and 50% relative humidity for 2 days and then tested in a tensile test.
Tensile test of foam systems and Metal specimens
A tensile test was performed according to fig. 3. The foamed container, foam system and composite material with attached metal coupon were clamped vertically into the tractor.
The metal coupon was then sheared from the foam system at an angle of 180℃with a pre-applied force of 1N and a 20mm/min draw rate. The force generated is detected by a load cell. The maximum force of the tensile test was recorded and the average of three replicates was calculated for evaluation.
Cup type foam test arrangement
Cup foam testing of the mixed polyol and isocyanate components was performed at ambient temperature. The polyol component is homogenized prior to use. A total of 260g of polyol and isocyanate mixture were added to a 1290ml-PP cup in the order of polyol followed by isocyanate component. The stopwatch was started and the composition was mixed at 1920rpm for 10 seconds. The reaction mixture was poured into a foaming beaker having a volume of 860 ml. After 10 minutes, the foam raised outside the beaker was cut with a knife without removing the upper part. After another 10 minutes, the upper portion of the cup foam was removed to see if the foam core turned brown.
TABLE 1
Formulation C1 is a polyurethane foam (comparable to EP3753056B1 sample 1) disclosed in the prior art literature and useful for packaging electrical units. Measured according to the described test methodAdhesion on the substrate showed a low value of 73N. Formulation C2 contained 1% by weight of chain extender in the polyol component. This directly results inThe adhesion on was increased as indicated by the value of 91N. For the case of higher amounts of chain extender in the polyol component (formulations C3, C4 and C5)), the adhesion test resulted in even higher values and all were almost twice as high as the C1 value. Example C5 contains a mixture of two chain extenders, even for this case, the adhesion test results are much higher when compared to the results of C1. Thus, formulations containing at least one chain extender are shown to have a specific pairImproved adhesion of the substrate, which is desirable for potting the electrical unit.
C6 has the same polyol and isocyanate components as C4. The difference between C6 and C4 is an index. The index of C4 is 90.5 and the index of C6 is 100.5. This means a higher isocyanate content. Both examples show that the chain extender improves inThe effect of adhesion on the substrate is effective for both indexes below and above 100, since the adhesion test of C4 and C6 yields values that are more than twice those of C1.
This was also confirmed by formulations C7 and C8 using different chain extenders. The polyol component of C7 contains 10 parts of chain extender. C7 was prepared at an index of 90.5 and the corresponding adhesion results were more than three times that of C1. By using the same polyol component but increasing the index (as in the case of example C8), the values obtained by the adhesion test are still at a very high level.
TABLE 2
C9 is an example with 5 parts aromatic diamine as chain extender. With this formulation, it was observed that the viscosity increased too rapidly after mixing it with the isocyanate component, and it was not possible to perform an adhesion test with this formulation. By reducing the amount of diamine and combining it with the OH-terminated chain extender (E1), this test can be performed and very high adhesion values of more than three times the adhesion value from example C1 are measured. E1 shows that the combination of OH-terminated chain extenders with small amounts (< 5 parts) of aromatic diamines improves the performance at Hi-Adhesion on the substrate.
In E2 and C10, higher amounts of chain extender are applied. Whereas in E2 with a chain extender concentration of 11.4 parts by weight based on components a) to (f) a suitable foam with a white core is still obtained, for C10 with a chain extender concentration of 17.2 parts by weight based on components a) to (f) a brown core is shown indicating a high center temperature of the foam, thus indicating a high temperature during foam formation. Temperature measurements within the foam showed that after 5 minutes of reaction time, the core temperature in E2 was about 20 ℃ lower compared to the foam according to C10. Such high temperatures may damage the electrical unit during potting.
Claim (modification according to treaty 19)
1. A battery module wherein an electrical unit is potted into a potting material and the potting material is prepared by mixing the following components:
a) One or more organic polyisocyanates, such as a mixture of organic polyisocyanates,
B) One or more polymeric compounds having at least two isocyanate-reactive hydrogen atoms
C) 0.5 to 15% by weight of a chain extender, based on the total weight of components a) to f),
The chain extender comprises an O-H-chain extender (c 1) and an aromatic diamine curing agent (c 2),
D) Optionally one or more crosslinking agents
E) One or more of the catalysts are selected from the group consisting of,
F) From 2 to 20% by weight, based on the total weight of components a) to f), of one or more flame retardants,
G) At least one blowing agent and
H) Optionally fillers and/or polyurethane additives
To obtain a reaction mixture and curing the reaction mixture.
2. The battery module of claim 1, wherein the one or more polymeric compounds (b) having at least two isocyanate-reactive hydrogen atoms comprises a polyether alcohol (b 1) having a functionality of 2 to 4 and a hydroxyl number of 20 to 60mg KOH/g.
3. The battery module of claim 2, wherein the polyether alcohol (b 1) comprises at least 80% primary hydroxyl groups.
4. A battery module according to any one of claims 1 to 3, wherein the organic polyisocyanate (a) comprises at least one isocyanate selected from the group consisting of monomeric MDI, polymeric MDI, MDI-based prepolymers or a mixture of at least two of these.
5. The battery module of any one of claims 1-4, wherein the isocyanate index is 80 to 120.
6. The battery module of any one of claims 1 to 5, wherein the monomeric MDI and polymeric MDI in component (a) comprise at least 35 weight percent of the monomeric and polymeric MDI (a-1) used to produce the polyisocyanate prepolymer, based on the total weight of component (a) to component (f).
7. The battery module of any one of claims 1 to 6, wherein the OH-chain extender (c 1) is selected from the group consisting of monoethylene glycol, diethylene glycol, dipropylene glycol, 1, 2-propanediol, 1, 3-propanediol, 1, 4-butanediol, 1, 6-hexanediol, or mixtures thereof.
8. The battery module of any one of claims 1 to 7, comprising 0.5 wt% to 4 wt% of at least one aromatic diamine curing agent (c 2).
9. The battery module of claim 8, wherein the mass ratio between the OH-chain extender (c 1) and the aromatic diamine hardener (c 2) is between 200:1 and 1:1.
10. The battery module of any one of claims 1-9, wherein the flame retardant comprises a liquid flame retardant.
11. The battery module according to any one of claims 1 to 10, wherein the flame retardant comprises a phosphorus-based flame retardant and the content of phosphorus is 0.1 to 1wt% based on the total weight of the components (a) to (f),
12. The battery module of any one of claims 1-11, wherein the foaming agent comprises water.
13. The battery module of any one of claims 1-12, wherein the potting material has a density between 50g/dm 3 and 600g/dm 3.
14. The battery module of any one of claims 1-13, wherein component b) comprises a polymer polyol.
15. The battery module of any one of claims 1-14, wherein the content of the at least one polymer polyol is between 2 and 30wt% based on the total weight of compounds (a) to (f).
16. The battery module of any one of claims 1-15, wherein component (e) comprises a delayed action catalyst.
17. A method for producing a battery module, the method comprising the steps of:
Providing a battery case having the electric cells arranged in a defined space between adjacent electric cells,
Obtaining a reaction mixture obtained by mixing the following components
A) One or more organic polyisocyanates, such as a mixture of organic polyisocyanates,
B) One or more polymeric compounds having at least two isocyanate-reactive hydrogen atoms
C) 0.5 to 15 wt.%, based on the total weight of components (a) to (f), of a chain extender comprising an O-H-chain extender (c 1) and an aromatic diamine hardener (c 2)
D) Optionally one or more crosslinking agents
E) One or more of the catalysts are selected from the group consisting of,
F) From 2 to 20% by weight, based on the total weight of components a) to f), of one or more flame retardants,
G) At least one blowing agent and
H) Optionally fillers and/or polyurethane additives
And
Inserting the reaction mixture into the space between the adjacent electrical units and allowing the reaction mixture to cure.

Claims (17)

1. A battery module wherein an electrical unit is potted into a potting material and the potting material is prepared by mixing the following components:
a) One or more organic polyisocyanates, such as a mixture of organic polyisocyanates,
B) One or more polymeric compounds having at least two isocyanate-reactive hydrogen atoms
C) 0.5 to 15% by weight, based on the total weight of components a) to f), of one or more chain extenders comprising an O-H-chain extender (c 1) and an aromatic diamine hardener (c 2),
D) Optionally one or more crosslinking agents
E) One or more of the catalysts are selected from the group consisting of,
F) From 2 to 20% by weight, based on the total weight of components a) to f), of one or more flame retardants,
G) At least one blowing agent and
H) Optionally fillers and/or polyurethane additives
To obtain a reaction mixture and curing the reaction mixture.
2. The battery module of claim 1, wherein the one or more polymeric compounds (b) having at least two isocyanate-reactive hydrogen atoms comprises a polyether alcohol (b 1) having a functionality of 2 to 4 and a hydroxyl number of 20 to 60mg KOH/g.
3. The battery module of claim 2, wherein the polyether alcohol (b 1) comprises at least 80% primary hydroxyl groups.
4. A battery module according to any one of claims 1 to 3, wherein the organic polyisocyanate (a) comprises at least one isocyanate selected from the group consisting of monomeric MDI, polymeric MDI, MDI-based prepolymers or a mixture of at least two of these.
5. The battery module of any one of claims 1-4, wherein the isocyanate index is 80 to 120.
6. The battery module of any one of claims 1 to 5, wherein the monomeric MDI and polymeric MDI in component (a) comprise at least 35 weight percent of the monomeric and polymeric MDI (a-1) used to produce the polyisocyanate prepolymer, based on the total weight of component (a) to component (f).
7. The battery module of any one of claims 1 to 6, wherein the OH-chain extender (c 1) is selected from the group consisting of monoethylene glycol, diethylene glycol, dipropylene glycol, 1, 2-propanediol, 1, 3-propanediol, 1, 4-butanediol, 1, 6-hexanediol, or mixtures thereof.
8. The battery module of any one of claims 1 to 7, comprising 0.5 wt% to 4 wt% of at least one aromatic diamine curing agent (c 2).
9. The battery module of claim 8, wherein the mass ratio between the OH-chain extender (c 1) and the aromatic diamine hardener (c 2) is between 200:1 and 1:1.
10. The battery module of any one of claims 1-9, wherein the flame retardant comprises a liquid flame retardant.
11. The battery module according to any one of claims 1 to 10, wherein the flame retardant comprises a phosphorus-based flame retardant and the content of phosphorus is 0.1 to 1wt% based on the total weight of the components (a) to (f),
12. The battery module of any one of claims 1-11, wherein the foaming agent comprises water.
13. The battery module of any one of claims 1-12, wherein the potting material has a density between 50g/dm 3 and 600g/dm 3.
14. The battery module of any one of claims 1-13, wherein component b) comprises a polymer polyol.
15. The battery module of any one of claims 1-14, wherein the content of the at least one polymer polyol is between 2 and 30wt% based on the total weight of compounds (a) to (f).
16. The battery module of any one of claims 1-15, wherein component (e) comprises a delayed action catalyst.
17. A method for producing a battery module, the method comprising the steps of:
Providing a battery case having the electric cells arranged in a defined space between adjacent electric cells,
Obtaining a reaction mixture obtained by mixing the following components
A) One or more organic polyisocyanates, such as a mixture of organic polyisocyanates,
B) One or more polymeric compounds having at least two isocyanate-reactive hydrogen atoms
C) 0.5 to 15 wt.%, based on the total weight of components (a) to (f), of one or more chain extenders comprising an O-H-chain extender (c 1) and an aromatic diamine hardener (c 2)
D) Optionally one or more crosslinking agents
E) One or more of the catalysts are selected from the group consisting of,
F) From 2 to 20% by weight, based on the total weight of components a) to f), of one or more flame retardants,
G) At least one blowing agent and
H) Optionally fillers and/or polyurethane additives
And
Inserting the reaction mixture into the space between the adjacent electrical units and allowing the reaction mixture to cure.
CN202380064654.8A 2022-09-09 2023-09-07 Battery potting materials with improved metal adhesion Pending CN120019527A (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US202263375071P 2022-09-09 2022-09-09
EP22194738 2022-09-09
EP22194738.5 2022-09-09
US63/375,071 2022-09-09
PCT/EP2023/074553 WO2024052451A1 (en) 2022-09-09 2023-09-07 Battery potting material with improved adhesion to metal

Publications (1)

Publication Number Publication Date
CN120019527A true CN120019527A (en) 2025-05-16

Family

ID=88016462

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202380064654.8A Pending CN120019527A (en) 2022-09-09 2023-09-07 Battery potting materials with improved metal adhesion

Country Status (6)

Country Link
EP (1) EP4584841A1 (en)
JP (1) JP2025530833A (en)
KR (1) KR20250067862A (en)
CN (1) CN120019527A (en)
MX (1) MX2025002748A (en)
WO (1) WO2024052451A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20250076576A (en) * 2022-09-22 2025-05-29 바스프 에스이 Method for manufacturing battery products and battery products manufactured thereby
EP4636000A1 (en) 2024-04-16 2025-10-22 Covestro Deutschland AG Encapsulation material made from a polyurethane foam composition
WO2025202124A1 (en) 2024-03-26 2025-10-02 Covestro Deutschland Ag Encapsulation material made from a polyurethane foam composition
WO2025233647A1 (en) * 2024-05-08 2025-11-13 Sika Technology Ag Battery box comprising a foamed polisocyanurate material

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE111394C (en)
GB1022434A (en) 1961-11-28 1966-03-16 Union Carbide Corp Improvements in and relating to polymers
US3304273A (en) 1963-02-06 1967-02-14 Stamberger Paul Method of preparing polyurethanes from liquid, stable, reactive, filmforming polymer/polyol mixtures formed by polymerizing an ethylenically unsaturated monomer in a polyol
US3523093A (en) 1961-11-28 1970-08-04 Paul Stamberger Method of producing polyurethanes by reacting polyisocyanate with a preformed polymer resulting from polymerization of ethylenically unsaturated monomers
DE1152536B (en) 1962-03-30 1963-08-08 Bayer Ag Process for the production of foams containing urethane groups
DE1152537B (en) 1962-06-02 1963-08-08 Bayer Ag Process for the production of homogeneous plastics containing urethane groups
AU551979B2 (en) 1982-03-31 1986-05-15 Shell Internationale Research Maatschappij B.V. Epoxy polymerisation catalysts
DE102004013408A1 (en) 2004-03-18 2005-10-06 Basf Ag Polyether alcohols and process for the preparation of polyether alcohols for polyurethane synthesis
DE102005024144A1 (en) 2005-05-23 2006-11-30 Basf Ag Process for the production of viscoelastic flexible polyurethane foams
ES2410555T3 (en) 2006-11-09 2013-07-02 Basf Se Process for the production of polyol dispersions
JP5269466B2 (en) 2008-04-15 2013-08-21 株式会社スピルリナ研究所 Composition for ingestion
FR2962261B1 (en) 2010-07-02 2013-08-02 Saft Groupe Sa BATTERY OF ELECTROCHEMICAL GENERATORS COMPRISING FOAM AS FILLING MATERIAL BETWEEN GENERATORS
CA3151709C (en) 2018-02-16 2023-10-10 H.B. Fuller Company Electric cell potting compound and method of making
CN109251303A (en) 2018-08-08 2019-01-22 浙江清优材料科技有限公司 A kind of electrical core of power battery flame resistant heat insulation material
CN109053993A (en) 2018-08-08 2018-12-21 浙江清优材料科技有限公司 A kind of electrical core of power battery protective materials
JP6755631B2 (en) 2018-08-30 2020-09-16 第一工業製薬株式会社 Two-component curable resin composition for battery potting
CN111607351A (en) 2020-06-01 2020-09-01 北京高盟新材料股份有限公司 Heat-conducting polyurethane pouring sealant for new energy vehicle battery and preparation method thereof

Also Published As

Publication number Publication date
KR20250067862A (en) 2025-05-15
WO2024052451A1 (en) 2024-03-14
EP4584841A1 (en) 2025-07-16
JP2025530833A (en) 2025-09-17
MX2025002748A (en) 2025-04-02

Similar Documents

Publication Publication Date Title
CN120019527A (en) Battery potting materials with improved metal adhesion
EP2922921B1 (en) Isocyanate-based polymer foam having improved flame retardant properties
KR20110139273A (en) Process for producing rigid polyurethane foam
KR101850508B1 (en) New non-emissive amine composition for improved system shelf life stability
JP2019502809A (en) Reactive flame retardant for polyurethane foam and polyisocyanurate foam
US20220315757A1 (en) Low tvoc flame-retardant polyurethane spray foam system
KR20140026487A (en) Process for producing rigid polyurethane foams
CN104583287B (en) The polyurethane polyureas acid amides rigid foam of plastically deformable
US20140073712A1 (en) Polyurethanes comprising halogen compounds
EP4591380A2 (en) Method for producing battery article, and battery article produced therefrom
JPH0711126A (en) Hydrophobic rigid polyurethane
US20200173359A1 (en) Flame retardant insulation for internal combustion engines
KR20140026488A (en) Process for producing rigid polyurethane foams
DE4001044C2 (en) Process for the preparation of flexible viscoelastic polyurethane foams having an improved sound absorption capacity and polyether-polyol-polyester-polyol mixtures which can be used for this purpose
KR20200091451A (en) Method for producing continuous foam rigid foam comprising urethane groups and isocyanurate groups
US9562131B2 (en) Thermoformable rigid polyurethane-polyamide foam
CN104619737B (en) Polyurethane containing halogen compounds
JP7710078B2 (en) Sound absorbing cover and sound source parts
CN114174370A (en) Composition for producing polyurethane foam
WO2025170771A1 (en) Flame resistant polyurethane pottant compositions
JP2025164469A (en) Polyurethane foam, sound-absorbing materials, and sound-absorbing structures
KR101803063B1 (en) Tertiary amine polyols, tertiary amine catalyst comprising same and manufacturing method thereof
WO2025165663A1 (en) Foam formulations
JP2026504595A (en) Stabilizer for polyurethane foam materials containing recycled polyols
EP4081566A1 (en) Polyurethane resin composition and polyurethane resin molded product

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination