# US 12,005,797 B2 · Thermal management system for an electric vehicle supply equipment (EVSE) that includes a dual-sided heatsink > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,005,797 B2 - Document ID: US12005797B2 - Status: Granted - Kind: B2 - Application number: 18/455,959 - Filed: 2023-08-25 - Published: 2024-02-29 - Granted: 2024-06-11 - Earliest claimed: 2022-08-25 - Assignees: Chargepoint, Inc. - Applicants: ChargePoint, Inc. - Inventors: Jacob Heth; Jaana Behm; William Rich; Kevin Fetterman; Aaron Dayton Little; Stephen Eric Sidle; Pasquale Romano - Web page: https://patentgrep.com/patent/US12005797B2 ## CPC - B60L 53/30: Constructional details of charging stations - B60L 53/302: Cooling of charging equipment - B60L 53/31: Charging columns specially adapted for electric 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 ## Abstract An electric vehicle supply equipment (EVSE) includes a thermal management system that includes a dual-sided heatsink that includes a first side that faces internal ambient air of the EVSE and a second side that faces external ambient air. A first fan circulates the internal ambient air of the EVSE across the first side to reject heat from the internal ambient air into the first side. A first airflow guide guides the internal ambient air across the first side of the dual-sided heatsink. A second fan draws external ambient air that flows across the second side to reject heat from the second side out of the thermal management system. A second airflow guide guides the external ambient air across the second side. An airflow seal prevents the external ambient air and the internal ambient air from mixing. ## Claims ### Claim 1 An electric vehicle supply equipment (EVSE) that includes a thermal management system, comprising: a dual-sided heatsink, including: a first side that faces internal ambient air of the EVSE, wherein the internal ambient air of the EVSE is heated by electronic components of the EVSE, and wherein no electronic components of the EVSE are directly connected to the dual-sided heatsink, and a second side that faces external ambient air; a first fan that circulates the internal ambient air of the EVSE across a length of the first side of the dual-sided heatsink to reject heat from the internal ambient air into the first side of the dual-sided heatsink that in turn conducts to the second side of the dual-sided heatsink; a first airflow guide that guides the internal ambient air across the length of the first side of the dual-sided heatsink; a second fan that draws external ambient air that flows across a length of the second side of the dual-sided heatsink to reject heat from the second side of the dual-sided heatsink out of the thermal management system, wherein heat from the second side of the dual-sided heatsink conducts to the external ambient air; a second airflow guide that guides external ambient air across the length of the second side of the dual-sided heatsink; and an airflow seal that prevents the external ambient air and the internal ambient air from mixing. ### Claim 2 (depends on 1) The EVSE of claim 1, wherein the first side and the second side of the dual-sided heatsink have a finned structure. ### Claim 3 (depends on 1) The EVSE of claim 1, wherein the first fan is an axial fan. ### Claim 4 (depends on 1) The EVSE of claim 1, wherein the second fan is a centrifugal fan. ### Claim 5 (depends on 1) The EVSE of claim 1, wherein the first fan is located proximate to a bottom third of the first side of the dual-sided heatsink, and wherein the second fan is located proximate to a bottom third of the second side of the dual-sided heatsink. ### Claim 6 (depends on 1) The EVSE of claim 1, wherein the second side of the dual-sided heatsink has a plurality of fin structures in a grid. ### Claim 7 (depends on 1) The EVSE of claim 1, further comprising: a top cover that has a hole mesh pattern that allows the external ambient air to escape out the top cover and prevents debris larger than holes of the mesh pattern to enter the second side of the dual-sided heatsink. ### Claim 8 (depends on 1) The EVSE of claim 1, wherein the airflow seal is a compressible material. ### Claim 9 (depends on 1) The EVSE of claim 1, wherein the first airflow guide is an internal backplate to which the first fan is mounted. ### Claim 10 (depends on 1) The EVSE of claim 1, wherein the second airflow guide is a cover that covers the first side of the dual-sided heatsink. ### Claim 11 A method for a thermal management system for an electric vehicle supply equipment (EVSE), the method comprising: circulating, by a first fan, internal ambient air of the EVSE across a length of an internal facing side of a dual-sided heatsink of the thermal management system to reject heat from the internal ambient air into the internal facing side of the dual-sided heatsink that in turn conducts to an external facing side of the dual-sided heatsink; drawing, by a second fan, external ambient air and causing the external ambient air to flow across a length of the external facing side of the dual-sided heatsink to reject heat from the external facing side of the dual-sided heatsink out of the thermal management system, wherein heat from the external facing side of the dual-sided heatsink conducts to the external ambient air; wherein an airflow seal prevents the external ambient air and the internal ambient air to mix; and wherein no electronic components of the EVSE are directly connected to the dual-sided heatsink. ### Claim 12 (depends on 11) The method of claim 11, wherein the internal facing side and the external facing side of the dual-sided heatsink have a finned structure. ### Claim 13 (depends on 11) The method of claim 11, wherein the first fan is an axial fan. ### Claim 14 (depends on 11) The method of claim 11, wherein the second fan is a centrifugal fan. ### Claim 15 (depends on 11) The method of claim 11, wherein the first fan is located proximate to a bottom third of the internal facing side of the dual-sided heatsink, and wherein the second fan is located proximate to a bottom third of the external facing side of the dual-sided heatsink. ### Claim 16 (depends on 11) The method of claim 11, wherein the external facing side of the dual-sided heatsink has a plurality of fin structures in a grid. ### Claim 17 (depends on 11) The method of claim 11, wherein the airflow seal is a compressible material. ### Claim 18 (depends on 11) The method of claim 11, wherein the heat from the dual-sided heatsink is rejected out of the thermal management system through a top cover that has a mesh pattern that allows external ambient air to escape and prevents debris from entering the external facing side of the dual-sided heatsink that are larger than holes of the mesh pattern. ### Claim 19 (depends on 11) The method of claim 11, wherein the first fan is mounted to an internal backplate that also guides the internal ambient air across the length of the internal facing side of the dual-sided heatsink. ### Claim 20 (depends on 11) The method of claim 11, wherein the second fan is a cover that covers the external facing side of the dual-sided heatsink and guides the external ambient air across the length of the external facing side of the dual-sided heatsink.