# US 6,724,985 B2 · Hot-water heating apparatus for electric vehicle and hybrid vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 6,724,985 B2 - Document ID: US6724985B2 - Status: Granted - Kind: B2 - Application number: 10/214,215 - Filed: 2002-08-07 - Published: 2003-02-13 - Granted: 2004-04-20 - Earliest claimed: 2001-08-08 - Assignees: Denso Corporation; Corona Corporation - Inventors: Ken Matsunaga; Yuji Takeo; Kenichi Hasegawa; Susumu Kazama; Yoshihiko Adachi - Web page: https://patentgrep.com/patent/US6724985B2 ## CPC - B60H 1/2221: {arrangements of electric heaters for heating an intermediate liquid (B60H1/034 takes precedence)} - F24H 1/162: {using electrical energy supply} - B60H: ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES - F24H: FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL (steam generation F22) ## Abstract A hot water heating apparatus for an electric vehicle and a hybrid vehicle has a compact heat source apparatus not requiring a wide space for setting. A communication pipe, in which water as a heat medium flows, and an electric heater are embedded in a heat conductor metal in proximity in a row arrangement to form a flat-shaped heat conductor. A heat source apparatus is constructed by stacking multiple flat-shaped heat conductors while the communication pipes are connected to each other in series. Further, the communication pipe and the electric heater are embedded in the heat conductor metal in proximity in a row arrangement, and the communication pipes are connected in series. Therefore, water flowing in the communication pipes is rapidly heated, and heating efficiency is extremely high. ## Claims ### Claim 1 A hot-water heating apparatus for an electric vehicle and a hybrid vehicle, comprising a heat source apparatus having a plurality of stacked, flat heat conductors, each flat heat conductor including: a communication pipe in which water flows as a heat medium; an electric heater; and a heat conductor metal in which the communication pipe and the electric heater are embedded proximate to each other in a row arrangement direction, and the communication pipes are connected in series; wherein: each of the communication pipes and the electric heaters is formed in a U-shape; and the electric heater is disposed inside a loon formed by the communication pipe in each heat conductor metal; and the flat heat conductors are stacked in a direction perpendicular to the row arrangement direction of the communication pipe and the electric heater. ### Claim 2 (depends on 1) The hot-water heating apparatus according to claim 1, wherein neighboring heat conductors define a heat insulation clearance therebetween. ### Claim 3 (depends on 1) The hot-water heating apparatus according to claim 1, wherein each heat conductor includes a superheating prevention device. ### Claim 4 (depends on 2) The hot-water heating apparatus according to claim 2, wherein each heat conductor includes a superheating prevention device. ### Claim 5 (depends on 1) The hot-water heating apparatus according to claim 1, wherein each flat heat conductor further comprising: a first end piece and a second end piece; and a flat connector portion connecting the first end piece and the second end piece. ### Claim 6 (depends on 5) The hot-water heating apparatus of claim 5, wherein the first end piece and the second end piece each define two holes, a first hole of each end piece for containing the electric heater and the second hole of each piece for containing the communication pipe. ### Claim 7 (depends on 6) The hot-water heating apparatus of claim 6, wherein the flat heat conductors are arranged adjacent to each other. ### Claim 8 (depends on 7) The hot-water heating apparatus of claim 7, wherein first ends of adjacent flat heat conductors define a first heat insulation clearance. ### Claim 9 (depends on 8) The hot-water heating apparatus of claim 8, wherein second ends of the adjacent flat heat conductors define a second heat insulation clearance. ### Claim 10 (depends on 5) The hot-water heating apparatus of claim 5, further comprising a projection portion located between the flat connector portions of adjacent flat heat conductors. ### Claim 11 (depends on 1) The hot-water heating apparatus according to claim 1, wherein a hot water outlet of one communication pipe is connected to a hot water inlet of another communication pipe of an adjacent flat heat conductor by a connection pipe. ### Claim 12 A hot-water heating apparatus for an electric vehicle and a hybrid vehicle, comprising a heat source apparatus having a plurality of stacked, flat heat conductors, each flat heat conductor including: a communication pipe in which water flows as a heat medium; an electric heater; and a heat conductor metal in which the communication pipe and the electric heater are embedded proximate to each other in a row arrangement direction, and the communication pipes are connected in series wherein neighboring heat conductors define a heat insulation clearance therebetween. ### Claim 13 (depends on 12) The hot-water heating apparatus according to claim 12, wherein each heat conductor includes a superheating prevention device.