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SE546633C2 - Stator for Electric Propulsion Machine, Electric Propulsion Machine, and Vehicle - Google Patents

Stator for Electric Propulsion Machine, Electric Propulsion Machine, and Vehicle

Info

Publication number
SE546633C2
SE546633C2 SE2350658A SE2350658A SE546633C2 SE 546633 C2 SE546633 C2 SE 546633C2 SE 2350658 A SE2350658 A SE 2350658A SE 2350658 A SE2350658 A SE 2350658A SE 546633 C2 SE546633 C2 SE 546633C2
Authority
SE
Sweden
Prior art keywords
stator
electric propulsion
coolant
propulsion machine
cooling unit
Prior art date
Application number
SE2350658A
Other languages
Swedish (sv)
Other versions
SE2350658A1 (en
Inventor
Christian Ness
Original Assignee
Scania Cv Ab
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Scania Cv Ab filed Critical Scania Cv Ab
Priority to SE2350658A priority Critical patent/SE546633C2/en
Priority to PCT/SE2024/050509 priority patent/WO2024248703A1/en
Priority to CN202480030992.4A priority patent/CN121128068A/en
Publication of SE2350658A1 publication Critical patent/SE2350658A1/en
Publication of SE546633C2 publication Critical patent/SE546633C2/en

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K1/00—Details of the magnetic circuit
    • H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
    • H02K1/12—Stationary parts of the magnetic circuit
    • H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K16/00—Machines with more than one rotor or stator
    • H02K16/04—Machines with one rotor and two stators
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K5/00—Casings; Enclosures; Supports
    • H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
    • H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
    • H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/10—Arrangements for cooling or ventilating by gaseous cooling medium flowing in closed circuit, a part of which is external to the machine casing
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

A stator (5) for an electric propulsion machine (4) is disclosed, wherein the stator (5) is configured to induce a torque to a rotor (8) of the electric propulsion machine (4) to rotate the rotor (8) around a rotation axis (Ax). The stator (5) comprises a first stator core portion (1), a second stator core portion (2), and a cooling unit (3) positioned between the first and second stator core portions (1, 2) as seen along the rotation axis (Ax). The cooling unit (3) forms a coolant path (P) extending along more than 40% of a circumference of the stator (5). The present disclosure further relates to an electric propulsion machine (4) and a vehicle (20) comprising an electric propulsion machine (4).

Claims (7)

Claims
1. A stator (5) for an electric propulsion machine (4), wherein the stator (5) is configured to induce a torque to a rotor (8) of the electric propulsion machine (4) to rotate the rotor (8) around a rotation axis (Ax), 5 wherein the stator (5) comprises: - a first stator core portion (1), - a second stator core portion (2), and - a cooling unit (3) positioned between the first and second stator core portions (1, 2) as seen along the rotation axis (Ax), 10 wherein the cooling unit (3) forms a coolant path (P extending along more than 40% of a circumference of the stator (5).
2. The stator (5) according to c|aim 1, wherein the coolant path (P) encloses the rotation axis (Ax). 20
3. The stator (5) according to c|aim 1 or 2, wherein the cooling unit (3) is clamped between the first and second stator core portions (1, 2).
4. The stator (5) according to any one of the preceding claims, wherein each of the first and second stator core portions (1, 2) and the cooling unit (3) comprises a number of stator 25 slots (1 ', 2', 3”), and wherein the stator (5) comprises a number of wire windings (6) arranged in the stator slots (1 ', 2', 3”), and wherein the coolant path (P) comprises a number of sections (P') located between stator slots (3') of the cooling unit (3).
5. The stator (5) according to any one of the preceding claims, wherein the stator (5) 30 comprises a stator housing (7) accommodating at least part of the first and second stator core portions (1, 2), and wherein the stator housing (7) comprises a coolant inlet (11) and a coolant outlet (12) each fluidly connected to the coolant path (P).
6. The stator (5) according to c|aim 5, wherein the coolant inlet (11) and the coolant outlet 35 (12) are arranged on opposite sides of the rotation axis (Ax).
7. The stator (5) according to c|aim 5 or 6, wherein the stator (5) comprises a radial gap (G) between the stator housing (7) and each of the first and second stator core portions (1,2), wherein the radial gap (G) forms a coolant volume (V) enclosing at least part of each of the first and second stator core portions (1, 2), and wherein the coolant path (P) is fluidly connected to the coolant inlet (11) and the coolant outlet (12) respectively via the coolant volume (V). The stator (5) according to claim 7, wherein the cooling unit (3) comprises a number of open faces (f1, f2, f3) together facing the coolant volume (V) along more than 40% of the circumference of the cooling unit (3). An electric propulsion machine (4) comprising a rotor (8) and a stator (5) according to any one of the preceding claims, wherein the stator (5) is configured to induce a torque to the rotor (8) to rotate the rotor (8) around a rotation axis (Ax). A vehicle (20) comprising an electric propulsion machine (4) according to claim 9, wherein the electric propulsion machine (4) is configured to provide motive power to the vehicle (20). The vehicle (20) according to claim 10, wherein the vehicle (20) is a heavy road vehicle, such as a truck or a bus.
SE2350658A 2023-05-30 2023-05-30 Stator for Electric Propulsion Machine, Electric Propulsion Machine, and Vehicle SE546633C2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
SE2350658A SE546633C2 (en) 2023-05-30 2023-05-30 Stator for Electric Propulsion Machine, Electric Propulsion Machine, and Vehicle
PCT/SE2024/050509 WO2024248703A1 (en) 2023-05-30 2024-05-24 Stator for electric propulsion machine, electric propulsion machine, and vehicle
CN202480030992.4A CN121128068A (en) 2023-05-30 2024-05-24 Stator for electric propulsion engines, electric propulsion engines, and vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE2350658A SE546633C2 (en) 2023-05-30 2023-05-30 Stator for Electric Propulsion Machine, Electric Propulsion Machine, and Vehicle

Publications (2)

Publication Number Publication Date
SE2350658A1 SE2350658A1 (en) 2024-12-01
SE546633C2 true SE546633C2 (en) 2025-01-07

Family

ID=91376142

Family Applications (1)

Application Number Title Priority Date Filing Date
SE2350658A SE546633C2 (en) 2023-05-30 2023-05-30 Stator for Electric Propulsion Machine, Electric Propulsion Machine, and Vehicle

Country Status (3)

Country Link
CN (1) CN121128068A (en)
SE (1) SE546633C2 (en)
WO (1) WO2024248703A1 (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20190110676A (en) * 2018-03-21 2019-10-01 엘지전자 주식회사 Stator structure for motor having refrigerant passage
EP3644480A1 (en) * 2017-06-19 2020-04-29 LG Electronics Inc. -1- Electric motor including oil spraying part
US20220399766A1 (en) * 2021-06-10 2022-12-15 Volvo Car Corporation Stator cooling assembly for electric machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10903701B2 (en) * 2016-08-17 2021-01-26 Atieva, Inc. Motor cooling system utilizing axial cooling channels
US11535097B2 (en) * 2020-05-11 2022-12-27 Atieva, Inc. Motor cooling system utilizing axial coolant channels
DE102021211919A1 (en) * 2021-10-22 2023-04-27 Zf Friedrichshafen Ag Stator for an electric machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3644480A1 (en) * 2017-06-19 2020-04-29 LG Electronics Inc. -1- Electric motor including oil spraying part
KR20190110676A (en) * 2018-03-21 2019-10-01 엘지전자 주식회사 Stator structure for motor having refrigerant passage
US20220399766A1 (en) * 2021-06-10 2022-12-15 Volvo Car Corporation Stator cooling assembly for electric machine

Also Published As

Publication number Publication date
SE2350658A1 (en) 2024-12-01
WO2024248703A1 (en) 2024-12-05
CN121128068A (en) 2025-12-12

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