# US 2025/0158481 A1 · Electric assembly and vehicle having same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2025/0158481 A1 - Document ID: US20250158481A1 - Status: Published application - Kind: A1 - Application number: 19/025,999 - Filed: 2025-01-16 - Published: 2025-05-15 - Earliest claimed: 2022-08-18 - Assignees: BYD Company Limited - Applicants: BYD Company Limited - Inventors: Axi QI; Fengchuan YU; Xingchun ZHANG - Web page: https://patentgrep.com/patent/US20250158481A1 ## CPC - H02K 5/225: {Terminal boxes or connection arrangements (specially adapted for submersible motors H02K5/132)} - B60K 1/00: Arrangement or mounting of electrical propulsion units (B60K7/00 takes precedence; arrangement or mounting of plural diverse prime-movers for mutual or common propulsion B60K6/00) - B60R 1/00: Optical viewing arrangements; Real-time viewing arrangements for drivers or passengers using optical image capturing systems, e.g. cameras or video systems specially adapted for use in or on vehicles - B60R 11/02: for radio sets, television sets, telephones, or the like; Arrangement of controls thereof - B60R 16/02: electric {constitutive elements} - B60R 16/0215: {Protecting, fastening and routing means therefor} - B60R 16/033: characterised by the use of electrical cells or batteries (for propulsion puposes B60K1/04; supplying batteries to, or removing batteries from, vehicles B60S5/06; testing of charge state G01R31/36) - H02K 5/10: with arrangements for protection from ingress, e.g. water or fingers - H02K 5/203: {specially adapted for liquids, e.g. cooling jackets} - H02K 5/22: Auxiliary parts of casings not covered by groups H02K5/06-H02K5/20, e.g. shaped to form connection boxes or terminal boxes - H02K 11/00: Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection (casings, enclosures or supports H02K5/00) - H02K 11/215: Magnetic effect devices, e.g. Hall-effect or magneto-resistive elements - H02K 11/30: Structural association with control circuits or drive circuits - H02K 11/33: Drive circuits, e.g. power electronics (H02K11/38 takes precedence) - H05K 7/20927: {Liquid coolant without phase change} - H02K: DYNAMO-ELECTRIC MACHINES (dynamo-electric relays H01H53/00; conversion of DC or AC input power into surge output power {H03K3/53}) - B60K: ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES - B60R: VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR - H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS ## Abstract An electric assembly includes a box body, an electric control module, and a motor. The electric control module is disposed in the box. The motor is disposed on the box. The motor includes: a casing, a N wire connection assembly, an end cover, and three phase windings. A first end of the N wire connection assembly is configured to connect to a battery pack. The end cover is disposed at one end of the casing and configured to close the casing, and includes an opening that allows a part of the N wire connection assembly to pass through. The three phase windings are disposed in the casing. First ends of the three phase windings are connected with the electric control module, and second ends of the three phase windings are connected with a junction and connected with a second end of the N wire connection assembly. ## Claims ### Claim 1 An electric assembly, comprising: a box; an electric control module disposed in the box; and a motor disposed on the box, wherein the motor comprises: a casing; an N wire connection assembly, a first end of the N wire connection assembly configured to connect to a battery pack; an end cover, wherein the end cover is disposed at one end of the casing, configured to close the casing, and comprises an opening that allows a part of the N wire connection assembly to pass through; and three phase windings disposed in the casing, wherein first ends of the three phase windings are connected with the electric control module, and second ends of the three phase windings are connected with a junction and connected with a second end of the N wire connection assembly. ### Claim 2 (depends on 1) The electric assembly according to claim 1, wherein the N wire connection assembly comprises: an N wire, wherein a first end of the N wire is connected with the second ends of the three phase windings; an N wire adapter, wherein a first end of the N wire adapter is connected with a second end of the N wire, and a second end of the N wire adapter passes through the opening; and an N wire terminal, wherein a first end of the N wire terminal is connected with a second end of the N wire, and a second end of the N wire terminal is connected with an N wire bar of the electric control module. ### Claim 3 (depends on 2) The electric assembly according to claim 2, further comprising a Hall device disposed on the N wire bar, wherein the Hall device is connected with the electric control module through a signal wire. ### Claim 4 (depends on 1) The electric assembly according to claim 1, further comprising: a contactor, wherein a first end of the contactor is configured to connect to the battery pack, and a second end of the contactor is configured to connect to the N wire connection assembly. ### Claim 5 (depends on 2) The electric assembly according to claim 2, further comprising: an N wire nose, wherein the N wire adapter passes through the opening and is connected with the N wire nose, and the N wire nose is configured to connect to the battery pack through a lead wire. ### Claim 6 (depends on 5) The electric assembly according to claim 5, wherein the motor further comprises an N wire base mounted to the end cover, the N wire adapter comprises a first connector, and the first connector is inserted into the N wire base. ### Claim 7 (depends on 6) The electric assembly according to claim 6, wherein the N wire nose comprises a second connector connected with the first connector. ### Claim 8 (depends on 7) The electric assembly according to claim 7, wherein the motor further comprises an N wire mounting and dismounting cover, a side of the N wire base facing away from the end cover comprises a mounting and dismounting port, the N wire mounting and dismounting cover is mounted to the N wire base and is configured to cover the mounting and dismounting port, and the mounting and dismounting port is configured to mount and dismount at least one of the first connector and the second connector. ### Claim 9 (depends on 8) The electric assembly according to claim 8, wherein the motor further comprises: a first sealing ring surrounding the opening and disposed between the N wire base and the end cover; and a second sealing ring surrounding the mounting and dismounting port and disposed between the N wire base and the N wire mounting and dismounting cover. ### Claim 10 (depends on 2) The electric assembly according to claim 2, further comprising a three-phase wire connection assembly, wherein the three-phase wire connection assembly comprises: a three-phase wire connected with a corresponding one of the three phase windings; and a three-phase wire terminal connected with the electric control module, wherein the three-phase wire terminal and the N wire terminal are integrally formed. ### Claim 11 (depends on 10) The electric assembly according to claim 10, wherein a peripheral surface of one end of the casing close to the end cover comprises a motor terminal slot, the three-phase wire terminal passes through the motor terminal slot and is mounted to the casing, a first end of the three-phase wire terminal connected with the motor passes through the motor terminal slot and enters a cavity formed by the end cover and the casing, and a second end of the three-phase wire terminal connected with the electric control module protrudes from the motor terminal slot. ### Claim 12 (depends on 11) The electric assembly according to claim 11, further comprising: a third sealing ring surrounding the motor terminal slot and located between the three-phase wire terminal and the end cover. ### Claim 13 (depends on 1) The electric assembly according to claim 1, further comprising: a water channel cover plate, wherein the water channel cover plate comprises a first water channel, the box comprises a second water channel and a third water channel, and the water channel cover plate is connected with the box and covers the second water channel and the third water channel. ### Claim 14 (depends on 13) The electric assembly according to claim 13, further comprising: a power module disposed on the box, a water inlet pipe configured to be in communication with the second water channel; and a water outlet pipe configured to be in communication with the third water channel, wherein the first water channel is in communication with the second water channel and the third water channel, a cooling liquid in the second water channel is configured to flow into the first water channel to dissipate heat for the electric control module, and a cooling liquid in the first water channel is configured to flow into the third water channel to dissipate heat for the power module. ### Claim 15 (depends on 14) The electric assembly according to claim 14, wherein the third water channel comprises: a transition section in communication with the first water channel; and an annular section surrounding the power module and configured to dissipate heat for the power module. ### Claim 16 (depends on 15) The electric assembly according to claim 15, wherein a first end of the annular section is connected with a first end of the transition section, and a second end of the annular section comprises a water outlet hole, wherein a depth of the annular section is greater than a depth of the second water channel and a depth of the transition section. ### Claim 17 A vehicle, comprising an electric assembly, wherein the electric assembly comprises: a box; an electric control module disposed in the box; and a motor disposed on the box, wherein the motor comprises: a casing; a N wire connection assembly, a first end of the N wire connection assembly configured to connect to a battery pack; an end cover, wherein the end cover is disposed at one end of the casing, configured to close the casing, and comprises an opening that allows a part of the N wire connection assembly to pass through; and three phase windings disposed in the casing, wherein first ends of the three phase windings are connected with the electric control module, and second ends of the three phase windings are connected with a junction and connected with a second end of the N wire connection assembly. ### Claim 18 (depends on 17) The vehicle according to claim 17, wherein the N wire connection assembly comprises: a N wire, wherein a first end of the N wire is connected with the second ends of the three phase windings; a N wire adapter, wherein a first end of the N wire adapter is connected with a second end of the N wire, and a second end of the N wire adapter passes through the opening; and a N wire terminal, wherein a first end of the N wire terminal is connected with a second end of the N wire, and a second end of the N wire terminal is connected with a N wire bar of the electric control module. ### Claim 19 (depends on 18) The vehicle according to claim 18, wherein the electric assembly further comprises a Hall device disposed on the N wire bar, wherein the Hall device is connected with the electric control module through a signal wire. ### Claim 20 (depends on 17) The vehicle according to claim 17, wherein the electric assembly further comprises a contactor, wherein a first end of the contactor is configured to connect to the battery pack, and a second end of the contactor is configured to connect to the N wire connection assembly.