# US 8,769,977 B2 · Heat exchanger arrangement > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,769,977 B2 - Document ID: US8769977B2 - Status: Granted - Kind: B2 - Application number: 13/392,033 - Filed: 2010-11-25 - Published: 2012-10-04 - Granted: 2014-07-08 - Earliest claimed: 2009-12-21 - Assignees: Webasto SE - Applicants: Markus Renner; Theresia Koppe - Inventors: Markus Renner; Theresia Koppe - Web page: https://patentgrep.com/patent/US8769977B2 ## CPC - B60H 1/00385: {for vehicles having an electrical drive, e.g. hybrid or fuel cell} - B60H 1/034: {from the cooling liquid of the propulsion plant and from an electric heating device} - B60L 1/003: {to auxiliary motors, e.g. for pumps, compressors} - B60L 1/02: to electric heating circuits - B60L 3/003: {relating to inverters} - B60L 3/0061: {relating to electrical machines} - B60L 50/52: characterised by DC-motors - B60L 58/26: by cooling - B60L 58/27: by heating - B60H 2001/00307: {Component temperature regulation using a liquid flow} - B60L 2240/34: Cabin temperature - B60L 2240/36: Temperature of vehicle components or parts - F01P 2060/08: Cabin heater - Y02T 10/70: Energy storage systems for electromobility, e.g. batteries - B60H: ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES - B60L: PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES (arrangements or mounting of electrical propulsion units or of plural diverse prime-movers for mutual or common propulsion in vehicles B60K1/00, B60K6/20; arrangements or mounting of electrical gearing in vehicles B60K17/12, B60K17/14; preventing wheel slip by reducing power in rail vehicles B61C15/08; dynamo-electric machines H02K; control or regulation of electric motors H02P); SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES (electric coupling devices combined with mechanical couplings of vehicles B60D1/64; electric heating for vehicles B60H1/00); ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL (control or regulation of electric motors H02P); MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES - F01P: COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES (arrangements in connection with cooling of propulsion units in vehicles B60K11/00; heat-transfer, heat-exchange or heat-storage materials C09K5/00; {cooling of gas-turbine engines F02C7/12}; heat exchange in general, radiators F28) - Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION ## Abstract A heat exchanger arrangement is made available for heating an area of a vehicle which is to be heated, having: a first heat exchanger element for transmitting waste heat from at least one vehicle electrical component to be cooled to air, and a second heat exchanger element for transmitting heat from at least one vehicle heating device to air. The first heat exchanger element and the second heat exchanger element are arranged in such a way that air (L) to be heated is successively applied to them. ## Claims ### Claim 1 A vehicle heating circuit, comprising: a first heat exchanger element for transmitting waste heat from at least one vehicle electrical component to be cooled to air, and a second heat exchanger element for transmitting heat from at least one vehicle heating device to air, wherein the first heat exchanger element and the second heat exchanger element are arranged in such a way that air to be heated is successively applied to them; wherein the first heat exchanger element is connected into a first liquid circuit in which the one or more electrical component to be cooled is arranged, wherein the second heat exchanger element is connected into a second liquid circuit in which the one or more vehicle heating device is arranged, and wherein the first liquid circuit and the second liquid circuit are connected to one another via connecting lines, and valves are provided with which the first liquid circuit and the second liquid circuit can be connected to one another and disconnected from one another. ### Claim 2 (depends on 1) The vehicle heating circuit as claimed in claim 1, wherein the first heat exchanger element and the second heat exchanger element are arranged in such a way that the air to be heated is firstly applied to the first heat exchanger element and then to the second heat exchanger element. ### Claim 3 (depends on 1) The vehicle heating circuit as claimed in claim 1, wherein the first heat exchanger element and the second heat exchanger element are each formed as liquid-to-air heat exchangers. ### Claim 4 (depends on 1) The vehicle heating circuit as claimed in claim 1, wherein the first heat exchanger element and the second heat exchanger element are thermally decoupled from one another. ### Claim 5 (depends on 1) The vehicle heating circuit as claimed in claim 1, wherein the first heat exchanger element and the second heat exchanger element are arranged in a common housing. ### Claim 6 (depends on 1) The vehicle heating circuit as claimed in claim 1, wherein the at least one electrical component to be cooled comprises a vehicle battery and/or an electric vehicle drive motor and/or at least one electronic component of the drive train of the vehicle. ### Claim 7 (depends on 1) The vehicle heating circuit as claimed in claim 1, wherein the at least one vehicle heating device comprises a fuel-operated vehicle heating apparatus. ### Claim 8 (depends on 1) The vehicle heating circuit as claimed in claim 1, wherein the at least one vehicle heating device comprises an electric resistance heater. ### Claim 9 (depends on 8) The vehicle heating circuit as claimed in claim 8, wherein the vehicle heating device is configured in such a way that when an electrical supply voltage is available only the electric resistance heater provides heat. ### Claim 10 (depends on 1) The vehicle heating circuit as claimed in claim 1, wherein the first liquid circuit and the second liquid circuit are connectable to one another in such a way that the electrical components can be heated with the vehicle heating device. ### Claim 11 (depends on 1) The vehicle heating circuit as claimed in claim 1, wherein a controller is provided with which the valves are connected and by which the valves can be actuated.