# US 12,225,687 B2 · Cooling capacity distribution unit and liquid cooling system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,225,687 B2 - Document ID: US12225687B2 - Status: Granted - Kind: B2 - Application number: 17/969,201 - Filed: 2022-10-19 - Published: 2023-03-16 - Granted: 2025-02-11 - Earliest claimed: 2020-04-21 - Assignees: Huawei Digital Power Technologies Co., Ltd. - Applicants: Huawei Digital Power Technologies Co., Ltd. - Inventors: Yuan Liu; Dangen Nie; Peiguo Liu - Web page: https://patentgrep.com/patent/US12225687B2 ## CPC - H05K 7/20272: {Accessories for moving fluid, for expanding fluid, for connecting fluid conduits, for distributing fluid, for removing gas or for preventing leakage, e.g. pumps, tanks or manifolds} - H05K 7/20263: {Heat dissipaters releasing heat from coolant} - H05K 7/20763: {Liquid cooling without phase change} - H02M 5/42: by static converters - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS - H02M: APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF (transformers H01F; dynamo-electric converters H02K47/00; controlling transformers, reactors or choke coils, control or regulation of electric motors, generators or dynamo-electric converters H02P) ## Abstract A cooling capacity distribution unit includes a liquid-cooled circulating pump disposed in a cabinet, and a frequency converter that supplies power to the liquid-cooled circulating pump. The frequency converter includes an AC-DC module and a DC-AC module. The AC-DC module is configured to be connected to mains, and the DC-AC module is connected to the liquid-cooled circulating pump. The cooling capacity distribution unit further includes a power supply unit, where the power supply unit includes a backup battery disposed in the cabinet, and a DC-DC module connected to the backup battery. The DC-DC module is connected to the DC-AC module and is configured to supply power to the liquid-cooled circulating pump. ## Claims ### Claim 1 A cooling capacity distribution system comprising: a cabinet; a liquid-cooled circulating pump disposed in the cabinet; a frequency converter comprising: an alternating current (AC)-direct current (DC) system configured to connect to a mains; and a DC-AC system connected to the liquid-cooled circulating pump and configured to supply power to the liquid-cooled circulating pump; and a power supply unit connected to the DC-AC system, configured to supply backup power to the liquid-cooled circulating pump, and comprising: a backup battery disposed in the cabinet; and a DC-DC system connected to the backup battery. ### Claim 2 (depends on 1) The cooling capacity distribution system of claim 1, wherein the frequency converter further comprises a housing, and wherein the housing comprises a battery bridge arm interface. ### Claim 3 (depends on 2) The cooling capacity distribution system of claim 2, wherein the DC-DC system is disposed in the frequency converter and further connected to the backup battery via the battery bridge arm interface. ### Claim 4 (depends on 3) The cooling capacity distribution system of claim 3, further comprising a controller connected to the frequency converter. ### Claim 5 (depends on 4) The cooling capacity distribution system of claim 4, wherein the controller is configured to control operation of the liquid-cooled circulating pump. ### Claim 6 (depends on 5) The cooling capacity distribution system of claim 5, wherein the frequency converter is positioned above the power supply unit within the cabinet, and wherein the controller is positioned above the frequency converter within the cabinet. ### Claim 7 (depends on 6) The cooling capacity distribution system of claim 6, further comprising a pipe layer connected to the liquid-cooled circulating pump. ### Claim 8 (depends on 7) The cooling capacity distribution system of claim 7, wherein the pipe layer is disposed between the backup battery and the liquid-cooled circulating pump. ### Claim 9 (depends on 1) The cooling capacity distribution system of claim 1, further comprising a shock absorber. ### Claim 10 (depends on 9) The cooling capacity distribution system of claim 9, wherein the liquid-cooled circulating pump is connected to the cabinet via the shock absorber. ### Claim 11 (depends on 1) The cooling capacity distribution system of claim 1, wherein the liquid-cooled circulating pump is a vertical pump. ### Claim 12 (depends on 1) The cooling capacity distribution system of claim 1, wherein the liquid-cooled circulating pump is a horizontal pump. ### Claim 13 A liquid cooling system comprising: a refrigeration system; and a cooling capacity distribution system connected to the refrigeration system and comprising: a cabinet; a liquid-cooled circulating pump disposed in the cabinet; a frequency converter comprising: an alternating current (AC)-direct current (DC) system configured to connect to a mains; and a DC-AC system connected to the liquid-cooled circulating pump and configured to supply power to the liquid-cooled circulating pump; and a power supply unit connected to the DC-AC system, configured to supply backup power to the liquid-cooled circulating pump, and comprising: a backup battery disposed in the cabinet; and a DC-DC system connected to the backup battery. ### Claim 14 (depends on 13) The liquid cooling system of claim 13, wherein the refrigeration system comprises: a cooling tower; and a plate heat exchanger connected to the cooling tower. ### Claim 15 (depends on 14) The liquid cooling system of claim 14, wherein the plate heat exchanger is connected to the cooling capacity distribution system. ### Claim 16 (depends on 15) The liquid cooling system of claim 15, wherein the refrigeration system further comprises a constant pressure water replenishment device. ### Claim 17 (depends on 16) The liquid cooling system of claim 16, wherein the constant pressure water replenishment device is configured to replenish water and pressure to the cooling capacity distribution system. ### Claim 18 (depends on 17) The liquid cooling system of claim 17, wherein the constant pressure water replenishment device comprises: a water replenishment tank; and a surge tank connected to the water replenishment tank. ### Claim 19 (depends on 18) The liquid cooling system of claim 18, wherein the water replenishment tank is connected to the cooling capacity distribution system. ### Claim 20 (depends on 13) The liquid cooling system of claim 13, wherein the cooling capacity distribution system further comprises a shock absorber, and wherein the liquid-cooled circulating pump is connected to the cabinet via the shock absorber.