# US 12,183,937 B2 · Motor vehicle battery module, motor vehicle having an electric drive motor and a battery module, and method for producing a motor vehicle battery module and a motor vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,183,937 B2 - Document ID: US12183937B2 - Status: Granted - Kind: B2 - Application number: 16/342,010 - Filed: 2017-10-25 - Published: 2019-08-15 - Granted: 2024-12-31 - Earliest claimed: 2016-11-04 - Assignees: Pfinder KG - Applicants: Fredy Doll Beteiligungs-GmbH - Inventors: Fredy Doll - Web page: https://patentgrep.com/patent/US12183937B2 ## CPC - H01M 50/24: adapted for protecting batteries from their environment, e.g. from corrosion (thermal insulation H01M10/658) - B60K 1/04: of the electric storage means for propulsion - H01M 50/121: Organic material - H01M 50/124: having a layered structure - H01M 50/133: Thickness - H01M 50/209: adapted for prismatic or rectangular cells (H01M50/216 takes precedence) - H01M 50/227: Organic material - H01M 50/231: having a layered structure - H01M 50/233: characterised by physical properties of casings or racks, e.g. dimensions - H01M 50/249: specially adapted for aircraft or vehicles, e.g. cars or trains (constructional details of batteries specially adapted for electric vehicles B60L50/64) - H01M 50/278: Organic material - H01M 50/282: having a layered structure - H01M 2220/20: Batteries in motive systems, e.g. vehicle, ship, plane - Y02E 60/10: Energy storage using batteries - H01M: PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION ## Abstract Motor vehicle battery modules having an energy content of at least 5 kWh for use as energy storage for electric cars. Such a battery module includes multiple individual batteries, each of which has at least one housing and at least one galvanic cell disposed within the housing. The battery module further includes a joining device, by which the individual batteries are assembled to form a battery module that can be handled as a whole. The battery module has, on its outside, a spray-applied protective layer that includes a wax and surrounds at least sections of the battery module. ## Claims ### Claim 1 A motor vehicle battery module comprising: multiple individual batteries, each of which has at least one housing and at least one galvanic cell disposed within the housing; a joining device, by which the individual batteries are assembled to form a battery module that can be handled as a whole; the battery module has, on an outside thereof, a spray-applied protective layer having a thickness between 5 μm and 50 μm that comprises a wax and surrounds at least sections of the battery module; wherein the wax is incorporated into a matrix of a binder; and the motor vehicle battery module having an energy content of at least 5 kWh. ### Claim 2 (depends on 1) The motor vehicle battery module as claimed in claim 1, wherein: the joining device comprises an outer housing that completely surrounds the individual batteries, and the protective layer is applied to the outside surface of the outer housing and at least predominantly covers the outside surface. ### Claim 3 (depends on 1) The motor vehicle battery module as claimed in claim 1, wherein: the joining device only partly surrounds the individual batteries, such that outer faces of the at least one housing of the individual batteries simultaneously form an outer face of the battery module, and the protective layer covers at least the outer faces of the at least one housing of a multitude of the individual batteries. ### Claim 4 (depends on 1) The motor vehicle battery module as claimed in claim 1, wherein: the protective layer comprises a spray material, wherein the spray material includes, as wax, a paraffin wax having a solidification point in the range from 30 to 95° C. ### Claim 5 (depends on 4) The motor vehicle battery module as claimed in claim 4, wherein: the spray material comprises a mineral oil as a carrier component. ### Claim 6 (depends on 4) The motor vehicle battery module as claimed in claim 4, wherein: the spray material is free of solvents that have to be removed in solidification of layer-forming components. ### Claim 7 (depends on 4) The motor vehicle battery module as claimed in claim 4, wherein: the spray material has a shear viscosity at 23° C. (determinable to DIN 53019-1/DIN EN ISO 3215) in the range from 80 to 240 mPas. ### Claim 8 (depends on 1) The motor vehicle battery module as claimed in claim 1, wherein: the protective layer comprises a spray material, wherein the spray material includes, as a further layer-forming component, a binder that forms, after solidification, a matrix incorporating the wax. ### Claim 9 (depends on 8) The motor vehicle battery module as claimed in claim 8, wherein: the binder is a binder crosslinkable by oxidation and/or by radiation. ### Claim 10 (depends on 1) The motor vehicle battery module claimed in claim 1, wherein: the protective layer comprises a spray material designed to form a solidified protective layer having an elongation at yield of at least 4%; and/or an average layer thickness is between 5 μm and 0.5 mm; and/or the spray material comprises a layer-forming component in which the layer-forming component is dissolved or dispersed; and/or the spray material comprises reservoirs containing fire-smothering or fire-inhibiting contents that are embedded into the protective layer; and/or the spray material is electrically nonconductive and/or designed to form an electrically insulating protective layer. ### Claim 11 (depends on 1) A motor vehicle comprising an electric drive motor and at least one of the motor vehicle battery module as claimed in claim 1. ### Claim 12 (depends on 11) The motor vehicle as claimed in claim 11, further including: a body comprising a support structure to accommodate the at least one of the motor vehicle battery module, wherein the body is provided, in a region of the support structure, with a protective layer that coats surfaces of the support structure. ### Claim 13 (depends on 11) The motor vehicle as claimed in claim 11, wherein: the at least one of the motor vehicle battery module comprises a multitude of battery modules, the multitude of battery modules being present in a support structure, and the multitude of battery modules are collectively covered by at least one further spray-applied protective layer and/or the multitude of battery modules are covered by a common lid on an outside of which a further spray-applied protective layer has been provided.