# US 2019/0170053 A1 · Coolant Reservoir Tank > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2019/0170053 A1 - Document ID: US20190170053A1 - Status: Published application - Kind: A1 - Application number: 16/210,861 - Filed: 2018-12-05 - Published: 2019-06-06 - Earliest claimed: 2017-12-05 - Assignees: Illinois Tool Works Inc. - Applicants: Illinois Tool Works Inc. - Inventors: Dennis Matthew Mark; Joseph Kuhn; Louis Sigioltzakis; Serge Iafrate - Web page: https://patentgrep.com/patent/US20190170053A1 ## CPC - F01P 11/029: {Expansion reservoirs} - F01P 7/165: {characterised by systems with two or more loops} - F01P 2050/24: Hybrid vehicles - F01P 2050/30: Circuit boards - 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) ## Abstract A coolant reservoir tank includes a first compartment that is configured to receive and retain a first portion of a liquid coolant. The first compartment is configured to be in fluid communication with a first liquid cooling circuit. A second compartment is configured to receive and retain a second portion of the liquid coolant. The second compartment is configured to be in fluid communication with a second liquid cooling circuit. A dividing wall separates the first compartment from the second compartment. The coolant reservoir tank further includes a fill port. ## Claims ### Claim 1 A coolant reservoir tank, comprising: a fill port; a first compartment configured to receive and retain a first portion of a liquid coolant received through the fill port, wherein the first compartment is configured to be in fluid communication with a first liquid cooling circuit; a second compartment configured to receive and retain a second portion of the liquid coolant received through the fill port, wherein the second compartment is configured to be in fluid communication with a second liquid cooling circuit; and a dividing wall separating the first compartment from the second compartment. ### Claim 2 (depends on 1) The coolant reservoir tank of claim 1, further comprising a fill port including a passage in fluid communication with the first compartment and second compartment. ### Claim 3 (depends on 1) The coolant reservoir tank of claim 1, further comprising a receiving chamber in fluid communication with a fill channel, wherein the fill channel fluidly connects to both the first compartment and the second compartment. ### Claim 4 (depends on 3) The coolant reservoir tank of claim 3, wherein the receiving chamber includes a fill bay with a lower ledge disposed at a maximum design fluid level of the coolant reservoir tank. ### Claim 5 (depends on 1) The coolant reservoir tank of claim 1, wherein the dividing wall is insulated to reduce heat transfer between the first portion and the second portion of the liquid coolant. ### Claim 6 (depends on 1) The coolant reservoir tank of claim 1, further comprising a fluid-separating rib disposed underneath the fill port. ### Claim 7 (depends on 6) The coolant reservoir tank of claim 6, wherein the fluid-separating rib is integral with a cover. ### Claim 8 (depends on 6) The coolant reservoir tank of claim 6, wherein the fluid-separating rib includes a recess disposed therein to create a gap between the dividing wall and the fluid separating rib. ### Claim 9 (depends on 6) The coolant reservoir tank of claim 6, wherein the fluid-separating rib comprises: a central apex; a first receding side downwardly extending from the central apex; and a second receding side downwardly extending from the central apex. ### Claim 10 (depends on 1) The coolant reservoir tank of claim 1, further comprising a sump, wherein the sump comprises an internal barrier wall, and one or more openings that fluidly connect the sump to the first compartment and the second compartment. ### Claim 11 (depends on 1) The coolant reservoir tank of claim 1, wherein the dividing wall comprises an opening formed at a lower portion. ### Claim 12 (depends on 11) The coolant reservoir tank of claim 11, wherein a channeling wall defines a fluid passage that is in fluid communication with the opening. ### Claim 13 (depends on 1) The coolant reservoir tank of claim 1 further including a separating port positioned between the fill port and the dividing wall. ### Claim 14 (depends on 13) The coolant reservoir tank of claim 13, wherein the separating port is selectively configurable to be in fluid communication with either the first compartment, the second compartment, or both the first and second compartments. ### Claim 15 A coolant reservoir tank, comprising: a first compartment configured to receive and retain a first portion of a liquid coolant, wherein the first compartment is configured to be in fluid communication with a first liquid cooling circuit; a second compartment configured to receive and retain a second portion of the liquid coolant, wherein the second compartment is configured to be in fluid communication with a second liquid cooling circuit; a dividing wall separating the first compartment from the second compartment, which includes an opening formed at a lower portion thereof; a fill port; and a separating port positioned between the fill port and the dividing wall, which includes a first fluid opening to the first compartment and a second fluid opening to the second compartment. ### Claim 16 (depends on 15) The coolant reservoir tank of claim 15, wherein the separating port is selectively configurable to be in fluid communication with either the first compartment, the second compartment, or both the first and second compartments. ### Claim 17 (depends on 15) The coolant reservoir of claim 15 further including a channeling wall defining a fluid passage that is in fluid communication with the opening of the dividing wall. ### Claim 18 (depends on 15) The coolant reservoir of claim 15, wherein a fluid-separating rib is provided underneath the fill port. ### Claim 19 (depends on 15) The coolant reservoir tank of claim 15 further including a sump, wherein the sump comprises an internal barrier wall and one or more openings that fluidly connect the sump to the first compartment and the second compartment. ### Claim 20 A liquid cooling circuit system for a vehicle, the system comprising: a first circuit comprising one or more components, wherein one of the components is a battery; a second circuit comprising one or more components, wherein one of the components is an inverter system circuit; and a coolant reservoir tank for retaining and circulating liquid coolant in relation to the first circuit and the second circuit, the coolant reservoir tank comprising: a first compartment that is configured to receive and retain a first portion of a liquid coolant, wherein the first compartment is configured to be in fluid communication with the battery, a second compartment that is configured to receive and retain a second portion of the liquid coolant, wherein the second compartment is configured to be in fluid communication with the inverter system circuit, a dividing wall that separates the first compartment from the second compartment, and a fill port in fluid communication with the first compartment and the second compartment.