# US 2026/0074615 A1 · Filter of direct-current power supply, and electric drive controller and vehicle > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2026/0074615 A1 - Document ID: US20260074615A1 - Status: Published application - Kind: A1 - Application number: 19/392,301 - Filed: 2025-11-18 - Published: 2026-03-12 - Earliest claimed: 2023-06-14 - Assignees: Zhejiang ZEEKR Intelligent Technology Co., Ltd.; Viridi E-Mobility Technology (Ningbo) Co., Ltd.; Zhejiang Geely Holding Group Co., Ltd. - Applicants: Zhejiang ZEEKR Intelligent Technology Co., Ltd.; Viridi E-Mobility Technology (Ningbo) Co., Ltd.; Zhejiang Geely Holding Group Co., Ltd. - Inventors: Mingfu LI; Xunjin XU; Changluo LI; Yaqi NIU - Web page: https://patentgrep.com/patent/US20260074615A1 ## CPC - H02M 3/003: {Constructional details, e.g. physical layout, assembly, wiring or busbar connections} - H02M 1/0009: {Devices or circuits for detecting current in a converter} - H02M 1/0064: {Magnetic structures combining different functions, e.g. storage, filtering or transformation} - H02M 1/12: Arrangements for reducing harmonics from AC input or output - H02M 1/123: {Suppression of common mode voltage or current} - H02M 1/126: {using passive filters} - H02M 1/14: Arrangements for reducing ripples from DC input or output - H02M 1/44: Circuits or arrangements for compensating for electromagnetic interference in converters or inverters - H02M 3/156: with automatic control of output voltage or current, e.g. switching regulators - H02M 7/003: {Constructional details, e.g. physical layout, assembly, wiring or busbar connections} - H03H 1/0007: {of radio frequency interference filters} - H03H 7/427: {Common-mode filters (H02J3/01 and H02M1/126 takes precedence)} - 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) - H03H: IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS (waveguides, resonators, lines or other devices of the waveguide type H01P) ## Abstract Disclosed in the present application are a filter of a direct-current power source, and an electric drive controller and a vehicle. The filter of a direct-current power source comprises a base, a power source charging copper bar, a power source positive copper bar, a power source negative copper bar and at least three stages of filtering assemblies. The power source charging copper bar, the power source positive copper bar, the power source negative copper bar, and the at least three stages of filtering assemblies are all assembled on the base, and the at least three stages of filtering assemblies are electrically connected to the power source charging copper bar, the power source positive copper bar and the power source negative copper bar, respectively. ## Claims ### Claim 1 A filter of a direct-current power supply, comprising: a base; a power charging copper bar, assembled to the base; a power positive copper bar, assembled to the base; a power negative copper bar, assembled to the base; and at least three stages of filter components, wherein the at least three stages of filter components are assembled to the base and are electrically connected to the power charging copper bar, the power positive copper bar, and the power negative copper bar, respectively. ### Claim 2 (depends on 1) The filter of the direct-current power supply according to claim 1, wherein the base extends along a first direction and a second direction that are located in a same horizontal plane and intersect with each other; the power charging copper bar comprises a power charging copper bar input terminal and a power charging copper bar output terminal; the power positive copper bar comprises a power positive copper bar input terminal and a power positive copper bar output terminal; the power negative copper bar comprises a power negative copper bar input terminal and a power negative copper bar output terminal; the power charging copper bar input terminal, the power positive copper bar input terminal, and the power negative copper bar input terminal extend side by side along the first direction; and the power charging copper bar output terminal, the power positive copper bar output terminal, and the power negative copper bar output terminal extend side by side along the second direction. ### Claim 3 (depends on 2) The filter of the direct-current power supply according to claim 2, wherein the power charging copper bar input terminal, the power positive copper bar input terminal, and the power negative copper bar input terminal have height differences relative to the horizontal plane, respectively, and the height differences are different; the power charging copper bar output terminal, the power positive copper bar output terminal, and the power negative copper bar output terminal have height differences relative to the horizontal plane, and the height differences are different; and the power charging copper bar input terminal and the power charging copper bar output terminal have different height differences relative to the horizontal plane, the power positive copper bar input terminal and the power positive copper bar output terminal have different height differences relative to the horizontal plane, and the power negative copper bar input terminal and the power negative copper bar output terminal have different height differences relative to the horizontal plane. ### Claim 4 (depends on 2) The filter of the direct-current power supply according to claim 2, wherein the power positive copper bar is disposed closer to an outer edge of the base relative to the power negative copper bar and the power charging copper bar. ### Claim 5 (depends on 2) The filter of the direct-current power supply according to claim 2, wherein the power charging copper bar is disposed closer to an inner middle region of the base relative to the power positive copper bar and the power negative copper bar. ### Claim 6 (depends on 2) The filter of the direct-current power supply according to claim 2, wherein the at least three stages of filter components comprise a first-stage filter component, a second-stage filter component, and a third-stage filter component that are respectively sleeved on the power charging copper bar, the power positive copper bar, and the power negative copper bar, and are respectively connected to the power charging copper bar, the power positive copper bar, and the power negative copper bar. ### Claim 7 (depends on 6) The filter of the direct-current power supply according to claim 6, wherein the first-stage filter component is disposed closer to the power charging copper bar input terminal, the power positive copper bar input terminal, and the power negative copper bar input terminal relative to the second-stage filter component and the third-stage filter component. ### Claim 8 (depends on 6) The filter of the direct-current power supply according to claim 6, wherein the first-stage filter component is arranged to extend along the first direction; and the second-stage filter component and the third-stage filter component are arranged to be distributed at intervals along the second direction. ### Claim 9 (depends on 6) The filter of the direct-current power supply according to claim 6, wherein the first-stage filter component is integrally formed as an annular structure, and the power charging copper bar input terminal, the power positive copper bar input terminal, and the power negative copper bar input terminal are all disposed through the first-stage filter component and extend from the first-stage filter component to outside of the base. ### Claim 10 (depends on 6) The filter of the direct-current power supply according to claim 6, wherein the second-stage filter component is a split structure and comprises an upper part of the second-stage filter component and a lower part of the second-stage filter component; and the upper part of the second-stage filter component and the lower part of the second-stage filter component are vertically engaged by inserting, to be assembled above and below the power charging copper bar, the power positive copper bar, and the power negative copper bar. ### Claim 11 (depends on 6) The filter of the direct-current power supply according to claim 6, wherein the third-stage filter component is a split structure and comprises an upper part of the third-stage filter component and a lower part of the third-stage filter component; and the upper part of the third-stage filter component and the lower part of the third-stage filter component are vertically engaged by inserting, to be assembled above and below the power charging copper bar, the power positive copper bar, and the power negative copper bar. ### Claim 12 (depends on 6) The filter of the direct-current power supply according to claim 6, wherein the first-stage filter component comprises an amorphous magnetic ring; the second-stage filter component comprises a ferrite magnetic ring; and the third-stage filter component comprises a ferrite magnetic ring. ### Claim 13 (depends on 1) The filter of the direct-current power supply according to claim 1, wherein the filter further comprises: a printed circuit board, covering a top of the base, wherein differential-mode components, common-mode components, and direct-current support capacitor components are disposed on a surface of the printed circuit board facing the base; and electrical connectors, respectively disposed on sides of the power charging copper bar, the power positive copper bar, and the power negative copper bar facing the printed circuit board, extending upward from tops of the power charging copper bar, the power positive copper bar, and the power negative copper bar, and electrically connected to the differential-mode components, the common-mode components, and the direct-current support capacitor components of the printed circuit board through vertical insertion. ### Claim 14 (depends on 13) The filter of the direct-current power supply according to claim 13, wherein the filter further comprises: a grounding copper bar; and one end of each of the differential-mode components, the common-mode components, and the direct-current support capacitor components is connected to the grounding copper bar, and the grounding copper bar is connected to a ground terminal. ### Claim 15 (depends on 13) The filter of the direct-current power supply according to claim 13, wherein each of the differential-mode components comprises at least one differential-mode capacitor; and each of the at least one differential-mode capacitor is connected between two of the power charging copper bar, the power positive copper bar, and the power negative copper bar. ### Claim 16 (depends on 13) The filter of the direct-current power supply according to claim 13, wherein each of the common-mode components comprises at least two common-mode capacitors; and each of the common mode capacitors is connected between a ground terminal and one of the power positive copper bar, the power negative copper bar, and the power charging copper bar. ### Claim 17 (depends on 13) The filter of the direct-current power supply according to claim 13, wherein the filter further comprises a current sensor disposed on the power positive copper bar. ### Claim 18 (depends on 13) The filter of the direct-current power supply according to claim 13, wherein the direct-current power supply comprises a direct-current boost power supply; the power positive copper bar is a positive copper busbar; and the power negative copper bar is a negative copper busbar. ### Claim 19 An electric drive controller, comprising a filter of a direct-current power supply, comprising: a base; a power charging copper bar, assembled to the base; a power positive copper bar, assembled to the base; a power negative copper bar, assembled to the base; and at least three stages of filter components, wherein the at least three stages of filter components are assembled to the base and are electrically connected to the power charging copper bar, the power positive copper bar, and the power negative copper bar, respectively. ### Claim 20 A vehicle, comprising an electric drive controller, wherein the electric drive controller comprises a filter of a direct-current power supply, comprising: a base; a power charging copper bar, assembled to the base; a power positive copper bar, assembled to the base; a power negative copper bar, assembled to the base; and at least three stages of filter components, wherein the at least three stages of filter components are assembled to the base and are electrically connected to the power charging copper bar, the power positive copper bar, and the power negative copper bar, respectively.