A resolver
By introducing a toroidal core and piping system into the rotary transformer, the windings are cooled efficiently, solving the problem of insufficient cooling in traditional rotary transformers and improving the overall performance of electrical signal transmission and electric rotating machinery.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-21
- Publication Date
- 2026-07-14
AI Technical Summary
Traditional rotary transformers have insufficient cooling efficiency, which affects the efficiency of electrical signal transmission and the performance of electric rotating machines.
A rotary transformer is designed, comprising a fixed unit and a rotatable unit, both of which rotate around a rotation axis via an annular core and efficiently guide cooling fluid through a piping system to improve winding cooling and reduce the number of pipes to simplify the structure.
It improves the cooling efficiency of rotary transformers, enhances electrical signal transmission, and improves the performance and reliability of electric rotary machines.
Smart Images
Figure CN122397093A_ABST
Abstract
Description
Technical Field
[0001] Several aspects of the present invention relate to a rotary transformer for transmitting electrical signals to the rotor of an electrically rotating machine. Background Technology
[0002] Typically, an electric rotating machine includes a stator and a rotor rotatable about an axis of rotation relative to the stator. Typically, at least one of the rotor and stator may have one or more windings, one or more permanent magnets, or one or more other elements that interact with the stator or rotor. Some electric rotating machines are equipped with a fluid system for cooling one or more of the rotor and stator, because during operation of the electric rotating machine, one or more of the rotor and stator may be heated to a suitable level for cooling. Some electric rotating machines may be equipped with a rotary transformer to transmit electrical signals to the rotor of the electric rotating machine. Some rotary transformers may be equipped with a fluid system for cooling the rotary transformer. Summary of the Invention
[0003] The inventors of this invention have discovered drawbacks in conventional rotary transformers used to transmit electrical signals to the rotors of electrically rotating machines. For example, the cooling of some conventional rotary transformers is not efficient enough.
[0004] The purpose of this invention is to provide a solution that mitigates or solves the drawbacks and problems of traditional solutions.
[0005] The foregoing and further objectives are achieved through the subject matter of the independent claims. Other advantageous embodiments of the invention can be found in the dependent claims.
[0006] According to a first aspect of the invention, the above and other objectives are achieved by a rotary transformer for transmitting electrical signals to the rotor of an electrically rotating machine, wherein the rotary transformer comprises: Fixed unit, and A rotatable unit, which can rotate about a rotation axis relative to a fixed unit. The fixed unit includes a first core, which includes a first compartment for accommodating one or more main windings of the rotary transformer. The rotatable unit includes a second core, which includes a second compartment that houses one or more secondary windings of the rotary transformer. The first core is annular and configured to rotate around an axis of rotation. The second core is annular and configured to rotate around and about the axis of rotation. The first core and the second core are separated by a gap between them. The rotary transformer includes an inlet for cooling fluid to cool one or more of the stationary and rotating units. The rotary transformer includes an outlet for cooling fluid. One of the first core and the second core includes a first conduit for guiding cooling fluid into one of the first and second compartments, and The first pipe is connected to the inlet of the rotary transformer.
[0007] The advantages of the rotary transformer according to the first aspect are: improved cooling of the rotary transformer because cooling fluid is more efficiently guided to and / or from the first or second compartment and the windings therein via the first conduit. The advantages of the rotary transformer according to the first aspect are: improved cooling of one or more of the stationary and rotatable units of the rotary transformer because cooling fluid is more efficiently guided to and / or from the first or second compartment and the windings therein via the first conduit. The advantages of the rotary transformer according to the first aspect are: improved transmission of electrical signals to and / or from the rotor of the electric rotating machine, for example, due to improved cooling. The advantages of the rotary transformer according to the first aspect are: an improved rotary transformer is provided, for example, due to improved cooling. The advantages of the rotary transformer according to the first aspect are: the electric rotating machine is improved by providing an innovative rotary transformer, for example, due to improved cooling.
[0008] Electrical signals transmitted by a rotary transformer may include electrical energy, current, and / or electrical signals that include data or information.
[0009] According to an advantageous embodiment of the rotary transformer according to the first aspect, the first core includes a first conduit for guiding cooling fluid to the first compartment. This embodiment has the advantage of further improving the rotary transformer. It also has the advantage of further improving the cooling of the rotary transformer. Furthermore, it has the advantage of further improving the cooling of one or more of the stationary and rotatable units of the rotary transformer. However, in other embodiments, the second core may include a first conduit for guiding cooling fluid to the second compartment.
[0010] According to another advantageous embodiment of the rotary transformer according to the first aspect, a first conduit is configured to guide cooling fluid to a first compartment for cooling one or more of the first core and the main winding. This embodiment has the advantage of further improving the rotary transformer. This embodiment also has the advantage of further improving the cooling of the rotary transformer. This embodiment further improves the cooling of the stationary unit of the rotary transformer.
[0011] According to another advantageous embodiment of the rotary transformer based on the first aspect, a first conduit is connected to the outlet of the rotary transformer. The advantages of this embodiment are: further improvement of the rotary transformer; further improvement of the cooling of the rotary transformer; and further improvement of the cooling of one or more of the stationary and rotatable units of the rotary transformer.
[0012] According to another advantageous embodiment of the rotary transformer according to the first aspect, the first conduit is further configured to guide one or more electrical connections for one or more of the primary winding and secondary winding. The advantages of this embodiment are: further improvement of the rotary transformer; further improvement of the cooling of the rotary transformer; further improvement of the cooling of one or more of the stationary and rotatable units of the rotary transformer; and less complexity of the rotary transformer due to the need for fewer conduits.
[0013] According to another advantageous embodiment of the rotary transformer according to the first aspect, the rotary transformer includes one or more electrical connections for one or more of the primary winding and secondary winding, wherein at least one or more portions of the one or more electrical connections are positioned in a first conduit. The advantages of this embodiment are: further improvement of the rotary transformer; further improvement of the cooling of the rotary transformer; further improvement of the cooling of one or more of the stationary and rotatable units of the rotary transformer; and less complexity of the rotary transformer due to the need for fewer conduits. Furthermore, space is saved by using the first conduit for both the cooling fluid and the electrical connections.
[0014] According to an advantageous embodiment of the rotary transformer according to the first aspect, the first conduit has a first opening open toward one of the first and second compartments, wherein, in one of the first and second compartments, at the first opening of the first conduit, a first space is formed between one or more conductors of one or more of the primary and secondary windings, so that cooling fluid can enter from the first conduit through the first opening of the first conduit into one of the first and second compartments. The advantage of this embodiment is that it further improves the rotary transformer. The advantage of this embodiment is that it further improves the cooling of the rotary transformer. The advantage of this embodiment is that it further improves the cooling of one or more of the stationary and rotatable units of the rotary transformer.
[0015] According to another advantageous embodiment of the rotary transformer according to the first aspect, in one of the first and second compartments, one or more second spaces are formed between one or more conductors of one or more of the primary and secondary windings for guiding cooling fluid in one or more of the first and second compartments. The advantage of this embodiment is that it further improves the cooling of the rotary transformer. The advantage of this embodiment is that it further improves the cooling of one or more of the stationary and rotatable units of the rotary transformer.
[0016] According to another advantageous embodiment of the rotary transformer according to the first aspect, one of the first core and the second core includes a second conduit for guiding cooling fluid away from one of the first and second compartments, wherein the second conduit is connected to the outlet of the rotary transformer. The advantage of this embodiment is that it further improves the cooling of the rotary transformer because the second conduit more efficiently guides the cooling fluid away from the first or second compartment and the windings therein. The advantage of this embodiment is that it further improves the cooling of one or more of the stationary and rotatable units of the rotary transformer because the second conduit more efficiently guides the cooling fluid away from the first or second compartment and the windings therein.
[0017] According to another advantageous embodiment of the rotary transformer according to the first aspect, the first core includes a second conduit for guiding cooling fluid away from the first compartment. This embodiment has the advantage of further improving the rotary transformer. It also has the advantage of further improving the cooling of the rotary transformer. Furthermore, it has the advantage of further improving the cooling of the stationary unit of the rotary transformer.
[0018] According to yet another advantageous embodiment of the rotary transformer according to the first aspect, the second conduit is further configured to guide one or more electrical connections for one or more of the primary and secondary windings. The advantages of this embodiment are: further improvement of the rotary transformer; further improvement of the cooling of the rotary transformer; further improvement of the cooling of one or more of the stationary and rotatable units of the rotary transformer; and less complexity of the rotary transformer due to the need for fewer conduits.
[0019] According to an advantageous embodiment of the rotary transformer based on the first aspect, the rotary transformer includes one or more electrical connections for one or more of the primary winding and secondary winding, wherein at least one or more portions of the one or more electrical connections are positioned in a second conduit. The advantages of this embodiment are: further improvement of the rotary transformer; further improvement of the cooling of the rotary transformer; further improvement of the cooling of one or more of the stationary and rotatable units of the rotary transformer; and less complexity of the rotary transformer due to the need for fewer conduits.
[0020] According to another advantageous embodiment of the rotary transformer according to the first aspect, the second conduit has a first opening toward one of the first and second compartments, wherein, in one of the first and second compartments, at the first opening of the second conduit, a third space is formed between one or more conductors of one or more of the primary and secondary windings, so that cooling fluid flows from one of the first and second compartments through the first opening of the second conduit to the second conduit. The advantages of this embodiment are: further improvement of the rotary transformer; further improvement of the cooling of the rotary transformer; and further improvement of the cooling of the stationary unit of the rotary transformer.
[0021] According to another advantageous embodiment of the rotary transformer according to the first aspect of the invention, the first compartment is annular. The second compartment is circular. The first conduit has a first opening that opens toward one of the first and second compartments. One of the fixed unit and the rotatable unit includes a curved partition positioned in one of the first and second compartments, and The curved baffle forms a curved channel with the wall of one of the first and second compartments to guide the cooling fluid from the first nozzle of the first pipe and to flow about the axis of rotation.
[0022] The advantages of this embodiment are: further improvement of the rotary transformer. The advantages of this embodiment are: further improvement of the cooling of the rotary transformer. The advantages of this embodiment are: further improvement of the cooling of the stationary unit of the rotary transformer. The advantages of this embodiment are: improved guidance of cooling fluid in the first or second compartment, and therefore improved cooling of one or more of the rotary transformer, stationary unit, rotating unit, main winding, and secondary winding.
[0023] According to another advantageous embodiment of the rotary transformer according to the first aspect, the curved channel includes two or more annular paths for cooling fluid. In this case, two or more annular paths extend around the axis of rotation. In this case, one of the two or more loop paths is radially located inside the other of the two or more loop paths, and The curved channel is configured to guide cooling fluid from one of two or more annular paths that is radially inside another of two or more annular paths to another of two or more annular paths that is radially outside another of two or more annular paths.
[0024] The advantages of this embodiment are: further improvement of the rotary transformer. The advantages of this embodiment are: further improvement of the cooling of the rotary transformer. The advantages of this embodiment are: further improvement of the cooling of the stationary unit of the rotary transformer. The advantages of this embodiment are: improved guidance of cooling fluid in the first or second compartment, and therefore improved cooling of one or more of the rotary transformer, stationary unit, rotating unit, main winding, and secondary winding.
[0025] According to yet another advantageous embodiment of the rotary transformer according to the first aspect, one of the two or more annular paths radially located inside another of the two or more annular paths includes a first nozzle of a first conduit. This embodiment has the advantage of further improving the rotary transformer. This embodiment also has the advantage of further improving the cooling of the rotary transformer. This embodiment further improves the cooling of the stationary unit of the rotary transformer. This embodiment also has the advantage of improving the guidance of cooling fluid in the first or second compartment, and thus improving the cooling of one or more of the rotary transformer, stationary unit, rotating unit, main winding, and secondary winding.
[0026] According to an advantageous embodiment of the rotary transformer based on the first aspect, the second conduit has a first opening that opens toward one of the first and second compartments. Wherein, the other of the two or more annular paths, located radially outside one of the two or more annular paths, includes the first nozzle of the second pipe, and The curved channel is configured to guide cooling fluid from the first nozzle of the first pipe to the first nozzle of the second pipe.
[0027] The advantages of this embodiment are: further improvement of the rotary transformer. The advantages of this embodiment are: further improvement of the cooling of the rotary transformer. The advantages of this embodiment are: further improvement of the cooling of the stationary unit of the rotary transformer. The advantages of this embodiment are: improved guidance of cooling fluid in the first or second compartment, and therefore improved cooling of one or more of the rotary transformer, stationary unit, rotating unit, main winding, and secondary winding.
[0028] According to another advantageous embodiment of the rotary transformer based on the first aspect, the curved channel includes a first end region and a second end region. The curved channel has an elongated extension that extends from a first end region to a second end region of the curved channel around a rotation axis. The first end region of the curved channel includes the first nozzle of the first pipe, and The curved channel is configured to guide cooling fluid from a first end region of the curved channel to a second end region of the curved channel.
[0029] The advantages of this embodiment are: further improvement of the rotary transformer. The advantages of this embodiment are: further improvement of the cooling of the rotary transformer. The advantages of this embodiment are: further improvement of the cooling of the stationary unit of the rotary transformer. The advantages of this embodiment are: improved guidance of cooling fluid in the first or second compartment, and therefore improved cooling of one or more of the rotary transformer, stationary unit, rotating unit, main winding, and secondary winding.
[0030] According to another advantageous embodiment of the rotary transformer according to the first aspect, the second end region of the curved channel includes the first nozzle of the second conduit. This embodiment has the advantage of further improving the rotary transformer. This embodiment also has the advantage of further improving the cooling of the rotary transformer. This embodiment further improves the cooling of the stationary unit of the rotary transformer. This embodiment also has the advantage of improving the guidance of cooling fluid in the first or second compartment, and thus improving the cooling of one or more of the rotary transformer, stationary unit, rotating unit, main winding, and secondary winding.
[0031] According to another advantageous embodiment of the rotary transformer according to the first aspect, one of the two or more annular paths radially located inside the other of the two or more annular paths includes a first end region of a curved channel. This embodiment has the advantage of further improving the rotary transformer. This embodiment also has the advantage of further improving the cooling of the rotary transformer. This embodiment further improves the cooling of the stationary unit of the rotary transformer. This embodiment also has the advantage of improving the guidance of cooling fluid in the first or second compartment, and thus improving the cooling of one or more of the rotary transformer, stationary unit, rotating unit, main winding, and secondary winding.
[0032] According to another advantageous embodiment of the rotary transformer according to the first aspect, the second end region of one of the two or more annular paths, radially located outside one of the two or more annular paths, includes a curved channel. This embodiment has the advantage of further improving the rotary transformer. It also has the advantage of further improving the cooling of the rotary transformer. Furthermore, it has the advantage of further improving the cooling of the stationary unit of the rotary transformer. Finally, it has the advantage of improving the guidance of cooling fluid in the first or second compartment, and thus improving the cooling of one or more of the rotary transformer, stationary unit, rotating unit, main winding, and secondary winding.
[0033] According to an advantageous embodiment of the rotary transformer according to the first aspect, one of the stationary unit and the rotatable unit includes a cover covering one of the first and second compartments, wherein one or more of the main winding and the secondary winding are enclosed by the cover and one of the first core and the second core. The advantages of this embodiment are: further improvement of the rotary transformer; further improvement of the cooling of the rotary transformer; further improvement of the cooling of the stationary unit of the rotary transformer; and improved guidance of cooling fluid in the first or second compartment, and thus improved cooling of one or more of the rotary transformer, the stationary unit, the rotatable unit, the main winding, and the secondary winding.
[0034] According to another advantageous embodiment of the rotary transformer based on the first aspect, a bent partition is attached to the cover. The advantages of this embodiment are: further improvement of the rotary transformer; further improvement of the cooling of the rotary transformer; and ease of assembly of the rotary transformer.
[0035] According to another advantageous embodiment of the rotary transformer based on the first aspect, the curved partition is integrally formed with the cover. The advantages of this embodiment are: further improvement of the rotary transformer; further improvement of the cooling of the rotary transformer; and ease of manufacture and assembly of the rotary transformer.
[0036] According to another advantageous embodiment of the rotary transformer according to the first aspect, one or more of the cover and the curved partition are made of a material comprising a polymer or a polymer composite material or composed of a polymer or a polymer composite material. The advantages of this embodiment are: further improvement of the rotary transformer; further improvement of the cooling of the rotary transformer; and ease of manufacture and assembly of the rotary transformer.
[0037] According to another advantageous embodiment of the rotary transformer according to the first aspect, the first compartment is open in the direction toward the second core, while the second compartment is open in the direction toward the first core.
[0038] According to an advantageous embodiment of the rotary transformer according to the first aspect, the first core has a first side facing the second core. The first core has a second side facing away from the second core. Specifically, on the first side of the first core, the first core includes a first compartment. The second core has a first side facing the first core. The second core has a second side facing away from the first core, and Specifically, on the first side of the second core, the second core includes a second compartment.
[0039] According to another advantageous embodiment of the rotary transformer based on the first aspect, the first conduit has a first spout opening toward one of the first and second compartments, wherein the first conduit has a second spout on a second side of one of the first and second cores. The advantage of this embodiment is that it further improves the rotary transformer's cooling.
[0040] According to another advantageous embodiment of the rotary transformer based on the first aspect, the second conduit has a first spout opening toward one of the first and second compartments, wherein the second conduit has a second spout on a second side of one of the first and second cores. The advantage of this embodiment is that it further improves the rotary transformer's cooling.
[0041] According to another advantageous embodiment of the first aspect of the invention, the rotary transformer includes a housing that accommodates a fixed unit and a rotatable unit. This embodiment has the advantage of further improving the rotary transformer. It also has the advantage of further improving the cooling of the rotary transformer. Furthermore, it has the advantage of further guiding the cooling fluid, thus improving the cooling of the rotary transformer.
[0042] According to another advantageous embodiment of the rotary transformer according to the first aspect, the rotary transformer includes a cooling fluid system for cooling one or more of the stationary unit and the rotatable unit, wherein the cooling fluid system includes one or more of the following: • First compartment; • Second compartment; • Entrance; • exit; • First pipeline; • Second pipeline; • First space; • Second space; • The third space; • Curved channels; • Two or more loop paths; and • Outer casing.
[0043] According to an advantageous embodiment of the rotary transformer based on the first aspect, one or more of the first core and the second core are made of a ferromagnetic or ferrimagnetic material. The advantage of this embodiment is that it further improves the rotary transformer.
[0044] According to another advantageous embodiment of the rotary transformer based on the first aspect, the outer radius of the second core is equal to the outer radius of the first core. The advantage of this embodiment is that it further improves the rotary transformer's cooling.
[0045] According to another advantageous embodiment of the rotary transformer based on the first aspect, the inner radius of the second core is equal to the inner radius of the first core. The advantage of this embodiment is that it further improves the rotary transformer's cooling.
[0046] According to a second aspect of the invention, the above and other objectives are achieved by an electro-rotating machine comprising: stator, The rotor, which is capable of rotating about a rotation axis relative to the stator, and A rotary transformer according to any embodiment disclosed above or herein.
[0047] The advantages of the electric rotating machine according to the second aspect and its embodiments correspond to the advantages of the rotary transformer according to the first aspect and its embodiments described above or below.
[0048] According to a third aspect of the invention, the above and other objectives are achieved by a vehicle comprising one or more of the following groups: • A rotary transformer according to any embodiment disclosed above or herein; and • An electric rotating machine according to any of the embodiments disclosed above or below.
[0049] The advantages of the vehicle according to the third aspect and its embodiments correspond to the advantages of the rotary transformer described above or below according to the first aspect and its embodiments.
[0050] The vehicle can be a wheeled vehicle, that is, a vehicle with wheels. A vehicle can be, for example, a bus, tractor unit, heavy vehicle, truck, or car. A tractor unit and / or truck can be, or can be configured to, tow or pull a trailer. However, other types of vehicles are also possible. The vehicle can be referred to as a motor vehicle. The vehicle can be an electric vehicle (EV), such as a hybrid vehicle or a hybrid electric vehicle (HEV) or a battery electric vehicle (BEV). Thus, hybrid electric vehicles (HEVs) and battery electric vehicles (BEVs) are versions or examples of electric vehicles (EVs). An EV may include one or more electrically rotating machines or electric motors. The vehicle may include an internal combustion engine. In some embodiments, the vehicle may include only an internal combustion engine for vehicle propulsion.
[0051] The vehicle may include a powertrain system. The powertrain system may be configured according to any of the embodiments disclosed above or below. The vehicle's powertrain system may include one or more of the following groups: internal combustion engine, battery cell pack, battery assembly, and battery pack.
[0052] The features and embodiments described above in the rotary transformer, the electric rotating machine, and the vehicle can be combined in various possible ways to provide further advantageous embodiments.
[0053] Further advantageous embodiments of the rotary transformer, electric rotating machine, and vehicle according to the invention, as well as further advantages of the embodiments of the invention, will become apparent from the detailed description of the embodiments. Attached Figure Description
[0054] The embodiments of the present invention will now be described in more detail with reference to the accompanying drawings, wherein similar parts are referred to by similar reference numerals. Figure 1 It is a schematic circuit diagram illustrating various aspects of embodiments of a rotary transformer according to a first aspect of the invention and an electric rotary machine according to a second aspect of the invention. Figure 2 This is a schematic cross-sectional side view of an embodiment of a rotary transformer according to the first aspect of the present invention; Figure 3 This is a schematic cross-sectional side view of another embodiment of a rotary transformer according to the first aspect of the present invention; Figure 4 The schematic illustration shows a cross-sectional view of an alternative structure of a fixed unit and a rotatable unit according to an embodiment of a rotary transformer based on a first aspect of the present invention. Figure 5 This is a schematic cross-sectional perspective view of a fixed unit and a rotatable unit according to an embodiment of a rotary transformer according to a first aspect of the present invention; Figure 6A This is a schematic perspective view of an embodiment of a first core or a second core of a rotary transformer according to a first aspect of the present invention; Figure 6B yes Figure 6A A schematic side view of the first or second core; Figure 6C yes Figure 6A A schematic bottom view of the first or second core; Figure 7 This is a schematic cross-sectional view of an embodiment of a rotary transformer according to the first aspect of the present invention; Figure 8 This is a schematic bottom view of an embodiment of the fixing unit of a rotary transformer according to a first aspect of the present invention; Figure 9A This is a schematic cross-sectional bottom view of one or more main windings or auxiliary windings of an embodiment of a rotary transformer according to the first aspect of the present invention; Figure 9B It is a schematic cross-sectional bottom view of one or more main or auxiliary windings of a conventional rotary transformer based on conventional technology; Figure 10 This is a schematic cross-sectional bottom view of an embodiment of a fixing unit of a rotary transformer according to a first aspect of the present invention, the rotary transformer comprising... Figure 9A One or more main windings; Figure 11 This is a schematic end view of an embodiment of an electric rotating machine according to a second aspect of the present invention; Figure 12 Schematic diagram Figure 11 The cross-section of the electric rotating machine taken along DD; Figure 13 This is a schematic diagram illustrating an embodiment of a fluid system for cooling one or more of the rotor and stator of an electric rotating machine according to a second aspect of the invention; and Figure 14This is a schematic side view of an embodiment of the vehicle according to a third aspect. Detailed Implementation
[0055] Figure 1 A schematic circuit diagram is shown, illustrating a general aspect of an embodiment of a rotary transformer 100a-100b for transmitting electrical signals to the rotor 810 of an electric rotary machine 800 according to a first aspect of the invention. The electrical signals transmitted by the rotary transformers 100a-100b may include electrical energy, current, and / or electrical signals including data or information. The circuit diagram also illustrates a general aspect of an embodiment of an electric rotary machine 800 according to a second aspect of the invention. The stator 806 of the electric rotary machine 800 may be supplied with electrical energy from a battery device 906 via a first power converter 702. The first power converter 702 is configured to convert direct current (DC) from the battery device 906 to alternating current (AC) to supply to the stator 806 of the electric rotary machine 800, and / or is configured to convert AC from the stator 806 of the electric rotary machine 800 to DC to supply to the battery device 906. In some embodiments, the first power converter 702 may be referred to as an inverter. The resolvers 100a-100b can be connected, or more specifically electrically connected, to the battery unit 906 via a second power converter 704, which may be referred to as a rotor current controller and / or an inverter. The resolvers 100a-100b can also be connected, or more specifically electrically connected, to the rotor 810 of the electrically rotating machine 800 via a third power converter 706, which may be referred to as a rotating rectifier. The second power converter 704 can be configured to convert direct current (DC) from the battery unit 906 to alternating current (AC) to supply to the resolvers 100a-100b, and / or can be configured to convert AC from the resolvers 100a-100b to DC to supply to the battery unit 906. The third power converter 706 may be configured to convert AC power from the resolvers 100a-100b to DC power, and / or may be configured to convert DC power from the rotor 810 of the electric rotating machine 800 to AC power to supply power to the rotor 810 of the electric rotating machine 800. In some embodiments, the resolvers 100a-100b may be further configured to transmit electrical signals from the rotor 810 of the electric rotating machine 800. Figure 1 As shown, the rotary transformers 100a-100b can be connected to or connected to the AC side of the second power converter 704 and the third power converter 706.
[0056] Reference Figure 2The illustration schematically depicts several aspects of an embodiment of a rotary transformer 100a for transmitting electrical signals to the rotor 810 of an electrically rotating machine 800 according to a first aspect of the invention. The rotary transformer 100a may also be referred to as a rotary, rotating, or rotatable transformer. The rotary transformer 100a includes a fixed unit 102 and a rotatable unit 104. The rotatable unit 104 is rotatable about a rotation axis 105 relative to the fixed unit 102. In some embodiments, the fixed unit 102 may be referred to as a fixed portion or a stator portion. In some embodiments, the rotatable unit 104 may be referred to as a rotatable portion or a rotor portion.
[0057] Reference Figure 2 , Figure 5 , Figures 6A-6C , Figure 7 and Figure 8 The fixed unit 102 includes a first core 106a. The first core 106a includes or forms a first compartment 130, which accommodates one or more main windings 108 of the rotary transformer 100a. The rotatable unit 104 includes a second core 110a. The second core 110a includes or forms a second compartment 118, which accommodates one or more secondary windings 112 of the rotary transformer 100a. The first core 106a is annular and configured to rotate around a rotation axis 105. It may be defined that the first core 106a is annular. The second core 110a is annular and configured to rotate around and about the rotation axis 105. It may be defined that the second core 110a is annular. In some embodiments, it may be defined that the fixed unit 102 includes one or more main windings 108 of the rotary transformer 100a. In some embodiments, the rotatable unit 104 may be defined as including one or more secondary windings 112 of the rotary transformer 100a.
[0058] Reference Figure 2 and Figure 7 The first core 106a and the second core 110a form or have a gap 140, such as an air gap, between them. In some embodiments, the first core 106a and the second core 110a may be spaced apart to form a gap 140, such as an air gap, between them. In some embodiments, the fixing unit 102 and the rotatable unit 104 may be spaced apart to form a gap 140, such as an air gap, between the fixing unit 102 and the rotatable unit 104.
[0059] In some embodiments, it may be defined that the rotatable unit 104 can be directly or indirectly attached to the rotor 810 of the electric rotating machine 800 (see [link]). Figure 12 ). Reference Figure 2 and Figures 5-7In some embodiments, the first core portion 106a may include, or be referred to as, a first core half or a first half of a cup-shaped core. In some embodiments, the second core portion 110a may include, or be referred to as a second core half or a second half of a cup-shaped core.
[0060] Reference Figure 2 , Figures 6A-6C and Figure 7 In some embodiments, the second core 110a may be defined as having a first side 114 facing the first core 106a, and the second core 110a may have one or more second sides 116 facing away from the first core 106a. In some embodiments, at the first side 114 of the second core 110a, the second core 110a may include or form a compartment 118 for accommodating one or more secondary windings 112.
[0061] Reference Figure 2 , Figures 6A-6C and Figure 7 In some embodiments, the first core 106a may be defined as having a first side 132 facing the second core 110a, and the first core 106a may have one or more second sides 134 facing away from the second core 110a. In some embodiments, at the first side 132 of the first core 106a, the first core 106a may include or form a compartment 130 for accommodating one or more main windings 108.
[0062] See Figure 6C and Figure 8 In some embodiments, the compartment 118 of the second core 110a may be annular. In some embodiments, the compartment 130 of the first core 106a may be annular.
[0063] Reference Figures 2 to 8 One or more of the first core 106a and the second core 110a may be made of a ferromagnetic or ferrimagnetic material, such as any of the ferromagnetic or ferrimagnetic materials mentioned above. However, other materials are also possible. In some embodiments, one or more of the first core 106a and the second core 110a may be made of a material comprising or composed of a ferromagnetic metal or a ferromagnetic metal alloy, such as any of the ferromagnetic metals or ferromagnetic metal alloys described above. However, other materials are also possible.
[0064] Reference Figure 6A In some embodiments, the outer radius r1 of the second core 110a can be equal to the outer radius r1 of the first core 106a. In some embodiments, the inner radius r2 of the second core 110a can be equal to the inner radius r2 of the first core 106a. Although Figures 6A-6CThe illustration shows that the first core 106a and the second core 110a have generally the same shape, but it should be understood that, in some embodiments, the shape of the first core 106a may be different from the shape of the second core 110a.
[0065] Reference Figure 3 The diagram schematically illustrates another embodiment of a rotary transformer 100b for transmitting electrical signals to the rotor 810 of an electrically rotating machine 800 according to a first aspect of the invention. The fixing unit 102 of the rotary transformer 100b can be described as being positioned between the rotatable unit 104 and the rotation axis 105. The fixing unit 102 of the rotary transformer 100b can also be described as being positioned inside the rotatable unit 104. In some embodiments, the first core 106b of the fixing unit 102 can be described as being positioned between the second core 110b of the rotatable unit 104 and the rotation axis 105. The first core 106b of the fixing unit 102 can also be described as being positioned inside the second core 110b of the rotatable unit 104. Figure 3 The rotary transformer 100b can be described as being located inside the rotor shaft 840 of the rotor 810 of the electric rotary machine 800. Figure 2 The rotary transformer 100a in the electric rotary machine 800 can be described as being located outside the rotor shaft 840 of the rotor 810 of the electric rotary machine 800.
[0066] Reference Figure 5 Figures a), b), c), d), e), and f) illustrate schematic cross-sectional views of alternative structures for a fixed unit 102 (and / or a first core 106a) and a rotatable unit 104 (and / or a second core 110a) according to an embodiment of a rotary transformer based on a first aspect of the invention. Each of the fixed unit 102 and the rotatable unit 104 may have windings and / or copper regions 108, 112, 113. Some embodiments may be provided with one or more polymer layers / coatings 115 or polymer composite material layers / coatings 115. For other embodiments, the cores of the fixed unit 102 and the rotatable unit 104 in each of Figures a), b), c), d), e), and f) may be interchangeable.
[0067] Reference Figure 7 The rotary transformer 100a includes an inlet 142 for cooling fluid to cool one or more of the stationary unit 102 and the rotatable unit 104. The cooling fluid may include one or more of the group consisting of liquids, gases, and gas mixtures. The liquid may include oil or oil mixtures or be composed of oil or oil mixtures. Therefore, the cooling fluid may be oil or oil mixtures. The rotary transformer 100a includes an outlet 144 for the cooling fluid.
[0068] Reference Figure 6A , Figure 6C and Figure 7 One of the first core 106a and the second core 110a, core 106a, includes a first conduit 146 for guiding cooling fluid flow to one of the first compartments 130 and 118. The first conduit 146 is connected (e.g., fluid-connected) to an inlet 142 of the rotary transformer 100a. In some embodiments, the first conduit 146 may be in the form of a through-hole or cavity (e.g., a longitudinal cavity), formed by one of the first cores 106a and 110a.
[0069] Reference Figure 6A , Figure 6C and Figure 7 In some embodiments, the first core 106a may include a first conduit 146 for directing cooling fluid flow to the first compartment 130. However, in other embodiments, the second core 110a may include a first conduit 146 for directing cooling fluid flow to the second compartment 118. In some embodiments, the first conduit 146 may be configured to direct cooling fluid flow to the first compartment 130 for cooling one or more of the first core 106a and the main winding 108. However, in other embodiments, the first conduit 146 may be configured to direct cooling fluid flow to the second compartment 118 for cooling one or more of the second core 110a and the secondary winding 108.
[0070] Reference Figure 7 In an alternative embodiment, the first conduit 146 may also be connected to the outlet 144 of the rotary transformer 100a.
[0071] Reference Figures 7 to 10 In some embodiments, the first conduit 146 may be configured to guide or lay out one or more electrical connections 148 for one or more of the primary winding 108 and the secondary winding 112 (see [link to documentation]). Figure 10 Electrical connection 148 may include conductors, cables, wires, and / or winding ends. In some embodiments, the rotary transformer 100a may be defined as including one or more electrical connections 148 for one or more of the primary winding 108 and the secondary winding 112, and at least one or more portions of the one or more electrical connections 148 are positioned in the first conduit 146.
[0072] Reference Figures 6C to 10For some embodiments, the first conduit 146 may be defined as having a first opening 154 that opens toward one of the first compartments 130 and 118. In one of the compartments 130 of the first and second compartments 118, at the first opening 154 of the first conduit 146, a first space 156 may be formed between one or more conductors 160, 162 of one or more of the primary winding 108 and the secondary winding 112 (see [link to relevant documentation]). Figure 9A and Figure 10 This allows cooling fluid to enter from the first conduit 146 via the first nozzle 154 of the first conduit 146 into one of the first compartment 130 and the second compartment 118 (and / or provides an inlet path for cooling fluid to enter from the first conduit 146 via the first nozzle 154 of the first conduit 146 into one of the first compartment 130 and the second compartment 118).
[0073] Reference Figure 9A and Figure 10 In some embodiments, one or more second spaces 158 may be formed between one or more conductors 160, 162 of one or more of the main winding 108 and the secondary winding 112 in one or more of the first compartment 130 and the second compartment 118 for guiding cooling fluid in one or more of the first compartment 130 and the second compartment 118.
[0074] Reference Figure 6A , Figure 6C and Figure 7 In some embodiments, one of the first core 106a and the second core 110a may include a second conduit 150 for guiding cooling fluid away from one of the first compartments 130 and 118. The second conduit 150 is connected to the outlet 144 of the rotary transformer 100a.
[0075] Reference Figure 6A , Figure 6C and Figure 7 In some embodiments, the first core 106a may include a second conduit 150 for guiding cooling fluid away from the first compartment 130. However, in other embodiments, the second core 110a may include a second conduit 150 for guiding cooling fluid away from the second compartment 118. In some embodiments, the first conduit 146 and the second conduit 150 may be located on opposite sides of the first core 106a (e.g., on diametrically opposite sides) or on opposite sides of the second core 110a (e.g., on diametrically opposite sides). Thus, the first conduit 146 may be located away from the second conduit 150. In some embodiments, the second conduit 150 may be adjacent to or near the first conduit 146.
[0076] Reference Figure 9A and Figure 10 In some embodiments, the second conduit 150 may be configured to guide or lay out one or more electrical connections 152 for one or more of the primary winding 108 and the secondary winding 112 (see [link to documentation]). Figure 10 For some embodiments, the rotary transformer 100a may be defined as including one or more electrical connections 152 for one or more of the primary winding 108 and the secondary winding 112, and at least one or more portions of the one or more electrical connections 152 are positioned in the second conduit 150.
[0077] See Figures 6C to 10 In some embodiments, the second conduit 150 may be defined as having a first opening 164 that opens toward one of the first compartment 130 and the second compartment 118. In one of the compartments 130 of the first compartment 130 and the second compartment 118, at the first opening 164 of the second conduit 150, a third space 166 may be formed between one or more conductors 160, 162 of one or more of the primary winding 108 and the secondary winding 112 (see [link to documentation]). Figure 9A and Figure 10 This allows cooling fluid to flow from one of the first compartment 130 and the second compartment 118 through a first nozzle 164 to the second conduit 150 (and / or provides an outlet path for allowing cooling fluid to flow from one of the first compartment 130 and the second compartment 118 through a first nozzle 164 to the second conduit 150).
[0078] Reference Figure 6A , Figure 6C and Figure 7 In some embodiments, when the first conduit 146 has a first spout 154 opening toward one of the first compartments 130 and 118, the first conduit 146 may have a second spout 192 at a second side 134, 116 of one of the cores 106a in the first core 106a and 110a. In some embodiments, when the second conduit 150 has a first spout 164 opening toward one of the first compartments 130 and 118, the second conduit 150 may have a second spout 194 at a second side 134, 116 of one of the cores 106a in the first core 106a and 110a.
[0079] Reference Figure 6C , Figure 8 , Figure 9A and Figure 10In some embodiments, the first compartment 130 may be annular, and the second compartment 118 may be annular. It may be defined that the first conduit 146 has a first opening 154 that opens toward one of the first compartment 130 and the second compartment 118. See also... Figure 8 and Figure 10 One of the fixed unit 102 and the rotatable unit 104, unit 102, may include a curved partition 168 (or guide or wall) positioned in one of the first compartments 130 and the second compartment 118. The curved partition 168 and the walls 172, 174 of one of the first compartments 130 and the second compartment 118 may form a curved channel 176 for guiding cooling fluid from the first nozzle 154 of the first conduit 146 and flowing about the axis of rotation 105.
[0080] Reference Figure 8 and Figure 10 In some embodiments, the curved channel 176 may include two or more annular paths 178, 180 for cooling fluid. In some embodiments, the walls 172, 174 of the curved baffle 168 and one of the first compartment 130 and the second compartment 118 may be defined to form two or more annular paths 178, 180 of the curved channel 176. The two or more annular paths 178, 180 extend about the axis of rotation 105. One of the two or more annular paths 178, 180 is radially located inside the other annular path 180. The curved channel 176 may be configured, for example, to guide cooling fluid from one of two or more annular paths 178, 180 to another annular path 180 when the rotatable unit 104 rotates, wherein one annular path 178 is radially inside another annular path 180, and the other annular path 180 is radially outside of one 178. In some embodiments, the curved channel 176 may be described or defined as a semi-spiral channel.
[0081] Reference Figure 8 and Figure 10 In some embodiments, one of the two or more annular paths 178, 180 is radially located inside the other annular path 180, and may include a first nozzle 154 of the first conduit 146.
[0082] Reference Figure 7 , Figure 8 , Figure 9A and Figure 10In some embodiments, the second conduit 150 may be defined as having a first spout 164, 118 opening toward one of the first 130 and the second compartment 118. In some embodiments, another annular path 180 of two or more annular paths 178, 180 is radially located outside one of the annular paths 178 and may include the first spout 164 of the second conduit 150. The curved channel 176 may be configured, for example, to guide cooling fluid from the first spout 154 of the first conduit 146 to the first spout 164 of the second conduit 150 when the rotatable unit 104 rotates.
[0083] Reference Figure 8 In some embodiments, the curved channel 176 may be defined as having a first end region 182 and a second end region 184. The curved channel 176 may also be defined as having an elongated extension extending about a rotation axis 105 from the first end region 182 to the second end region 184. The first end region 182 of the curved channel 176 may include a first nozzle 154 of a first conduit 146. The curved channel 176 may be configured, for example, to guide cooling fluid from the first end region 182 to the second end region 184 of the curved channel 176 when the rotatable unit 104 rotates. In some embodiments, the second end region 184 of the curved channel 176 may include a first nozzle 164 of a second conduit 150. In some embodiments, one of two or more annular paths 178, 180 radially located inside another annular path 180 may include the first end region 182 of the curved channel 176. In some embodiments, another of the two or more annular paths 178, 180, located radially outside one of the annular paths 178, may include a second end region 184 of a curved channel 176. Figure 8 The diagram illustrates two annular paths 178 and 180. However, in other embodiments, the curved channel 176 may include three or more annular paths for cooling fluid.
[0084] Reference Figure 7 In some embodiments, the rotary transformer 100a may include a housing 196 that houses the fixed unit 102 and the rotatable unit 104.
[0085] Reference Figure 7In some embodiments, the rotary transformer 100a may include a cooling fluid system 224 for cooling one or more of the stationary unit 102 and the rotatable unit 104. The cooling fluid system 224 may include one or more of the following: • First compartment 130; • Second compartment 118; • Entrance 142; • Exports: 144; • Pipeline 146; • Second pipe 150; • First Space 156; • Second Space 158; • Third Space 166; • Curved channel 176; • Two or more loop paths 178, 180; and • Casing 196.
[0086] It should be understood that, in some embodiments, the cooling fluid system 224 may include additional equipment, features, and / or devices. Another embodiment of the cooling fluid system 824 is described below. Figure 12 and Figure 13 Publicly available. The two cooling fluid systems 224 and 824 can be combined with each other.
[0087] Reference Figure 7 In some embodiments, one of the fixed unit 102 and the rotatable unit 104, unit 102, may include a cover 186 covering one of the first compartment 130 and the second compartment 118. One or more windings of the main winding 108 and the secondary winding 112 may be enclosed by the cover 186 and one of the first core 106a and the second core 110a. In some embodiments, a curved partition 168 may be attached to the cover 186.
[0088] Reference Figure 7 In some embodiments, the curved partition 168 may be integrally formed with the cover 186. However, in other embodiments, the curved partition 168 may be attached to the cover 186 by other attachment methods. The integral formation of the curved partition 168 with the cover 186 implies or means that the curved partition 168 and the cover 186 are formed as a single piece and / or formed from a single piece. For example, a single piece of material may be formed, for example, by molding or casting, into the cover 186 and the curved partition 168 integrally formed with the cover 186. In other words, the integral formation of the curved partition 168 with the cover 186 implies or means that the curved partition 168 and the cover 186 are made from a single piece.
[0089] Reference Figure 7 In some embodiments, one or more of the cover 186 and the curved partition 168 may be made of a material comprising a polymer or a polymer composite or a material composed of a polymer or a polymer composite. In some embodiments, the first compartment 130 may open toward the second core 110a, while the second compartment 118 may open toward the first core 106a.
[0090] Reference Figures 11 to 13 An embodiment of an electric rotary machine 800 according to a second aspect of the present invention is schematically illustrated. The electric rotary machine 800 can be used, for example, for propelling a vehicle 900 (see, for example, see...). Figure 14 The electric motor 804 of an electric vehicle (EV) functions or plays a role and / or serves, for example, as a means of powering one or more battery devices 906 (see Figure 14 The generator 804, which charges one or more battery packs, is in operation or functioning.
[0091] Reference Figure 12 The electric rotating machine 800 includes a stator 806 and a rotor 810 rotatable about a rotation axis 812 relative to the stator 806. The electric rotating machine 800 includes a rotary transformer 100a according to any embodiment disclosed above or below. The stator 806 may include one or more stator windings 808. It may be defined that the stator 806 is spaced apart from the rotor 810 to form a gap 814, such as an annular gap 814, between the stator 806 and the rotor 810. The rotor 810 may include one or more rotor windings (…). Figure 12 (Not shown in the image). However, in alternative embodiments, the electric rotary machine 800 can be configured to operate according to other electrical operating schemes for the electric rotary machine. For example, in alternative embodiments, the rotor may include one or more permanent magnets. Thus, the electric rotary machine may be a permanent magnet (PM) machine. Various conventional electric rotary machines and various conventional electrical operating schemes for conventional electric rotary machines are known to those skilled in the art, and therefore will not be discussed in further detail herein.
[0092] Reference Figure 12 The electric rotating machine 800 may include a rotor compartment 816 that houses a rotor 810. The electric rotating machine 800 may include a housing 818 that houses a stator 806 and a rotor 810. The housing 818 may define or form the rotor compartment 816. In some embodiments, the electric rotating machine 800 includes one or more end cap units 820, 822 that are immovable relative to the stator 806. For example, the rotor 810 may be connected or attached to one or more end cap units 820, 822 via one or more bearings 823.
[0093] Reference Figure 12And as described above, the electric rotating machine 800 includes a rotary transformer 100a according to any embodiment disclosed above or below. The rotating unit 104 of the rotary transformer 100a is positioned between the fixed unit 102 and... Figure 12 Between the right-side end cap unit 820. The fixing unit 102 of the rotary transformer 100a is positioned between the rotatable unit 104 and... Figure 12 Between the end cap unit 822 on the left side. However, it should be understood that different embodiments of the rotary transformer can be used... Figure 12 Several other methods, besides those shown, are applied to the electric rotary machine 800 in other locations.
[0094] Reference Figure 13 In some embodiments, the electric rotating machine 800 may include a cooling fluid system 824 for cooling one or more of the rotor 810 and stator 806. In some embodiments, the rotary transformer 100a may include or be equipped with a cooling fluid system 824 for cooling one or more of the stationary unit 102 and rotatable unit 104 of the rotary transformer 100a. As described above, the cooling fluid of the cooling fluid system 824 may include one or more of the following groups or constitute one or more of the following groups: liquid, gas, and gas mixture. The liquid may include oil or an oil mixture or constitute oil or an oil mixture. Therefore, the cooling fluid of the cooling fluid system 824 may be oil or an oil mixture. The cooling fluid system 824 may be configured to cool one or more of the rotor 810, stator 806, stationary unit 102, and rotatable unit 104.
[0095] Reference Figure 12 In some embodiments, the cooling fluid system 824 may include one or more channels 826 for, for example, guiding cooling fluid flow to and from the stator 806 and / or rotor 810. The housing 818 may include or form one or more channels 826. The cooling fluid system 824 may include an inlet 828 for a cooling fluid inlet and an outlet 830 for a cooling fluid outlet. The inlet 828 and outlet 830 may be the inlet 828 and outlet 830 of the housing 818. The inlet 828 may be an inlet 828 for allowing cooling fluid to enter one or more channels 826. The outlet 830 may be an outlet 830 for allowing cooling fluid to flow out of one or more channels 826.
[0096] Reference Figure 13The cooling fluid system 824 may include one or more pipes 832 or conduits for, for example, directing cooling fluid flow to and from one or more channels 826 and / or the housing 818 of the electric rotating machine 800. The cooling fluid system 824 may include a cooling fluid collection and supply device 834, such as a fluid collection tray or container or a fluid collection tank. In some embodiments, the fluid collection and supply device 834 may be in fluid communication with one or more channels 826 via a heat exchanger 836.
[0097] Reference Figure 14 The illustration schematically depicts an embodiment of a vehicle 900 according to a third aspect of the present invention. The vehicle 900 includes one or more of the following: rotary transformers 100a-100b according to any embodiment disclosed above or below; and an electric rotary machine 800 according to any embodiment disclosed above or below. The one or more electric rotary machines 800 may include one or more electric motors 802 and / or one or more generators 802. For example, the one or more electric rotary machines 800 may be configured for propulsion of the vehicle 900. For example, the one or more electric rotary machines 800 may be configured for charging one or more battery devices 906 and / or one or more battery packs 910 of the vehicle 900. However, the electric rotary machine 800 may also be used for other applications.
[0098] Reference Figure 14 Vehicle 900 is illustrated as a tractor unit. However, in other embodiments, vehicle 900 may be, for example, a bus, truck, heavy truck, or car. Other types of vehicles are also possible. Vehicle 900 may be an electric vehicle (EV), such as a hybrid vehicle or hybrid electric vehicle (HEV), or a battery electric vehicle (BEV).
[0099] Reference Figure 14 Vehicle 900 can be a wheeled vehicle, that is, a vehicle 900 with wheels 902. Figure 14 In the image, only the left-hand wheel 902 of vehicle 900 is visible. It should be understood that vehicle 900 may have a more... Figure 14The vehicle 900 may have fewer or more wheels. The vehicle 900 may include a powertrain 904, which may be configured, for example, for use in an EV, HEV, or BEV. The vehicle 900 may be configured to house or carry one or more battery units 906, or may include one or more battery units 906 comprising two or more battery cells 908. The vehicle 900 may be configured to house or carry one or more battery packs 910, or may include one or more battery packs 910 comprising two or more battery cells 908, which may be referred to as modules, and / or comprising two or more battery units 906. For example, the battery units 906 and / or battery packs 910 may be attachable to a chassis 912 of the vehicle 900. It should be understood that the vehicle 900 may include other units, components (such as electrical and / or mechanical components), an internal combustion engine 914, and other devices required for the vehicle 900 (such as an EV, HEV, or BEV).
[0100] Reference Figure 14 It may be defined that: the powertrain 904 and / or one or more electric rotating machines 800 are configured to propel or drive the vehicle 900. It may be defined that: the powertrain 904 includes a battery device 906 and / or a battery pack 910. One or more electric rotating machines 800 may be located in conjunction with... Figure 14 At different locations shown (e.g., at the location connected to the internal combustion engine 914), it can act as a generator, for example.
[0101] Reference Figure 14 Vehicle 900 may include vehicle electrical system 916. Vehicle electrical system 916 may be defined as being configured for direct current (DC). Vehicle electrical system 916 may be defined as a vehicle high-voltage system 916. Vehicle high-voltage system 916 may be defined as being configured for high voltages, such as voltages higher than 60 V, for example, higher than 400 V, or higher than 450 V, such as higher than 650 V. For example, vehicle high-voltage system 916 may be configured for voltages up to 1500 V and / or higher than 1500 V. Power or current (e.g., DC) of vehicle electrical system 916 may be transmitted at high voltages, for example, at one or more of the aforementioned voltage levels. Vehicle electrical system 916 may be configured to transmit power or current at high voltages, for example, at one or more of the aforementioned voltage levels. Vehicle electrical system 916 may be configured to transmit DC power.
[0102] Reference Figure 14The vehicle electrical system 916 may be electrically connected to or be accessible to one or more battery devices 906 and / or one or more battery packs 910. It may be defined that the battery devices 906 and / or battery packs 910 are configured for high voltage, such as for one or more of the aforementioned voltage levels. The vehicle electrical system 916 may be configured to electrically connect the battery devices 906 and / or battery packs 910 to the powertrain 904 of the vehicle 900. The vehicle electrical system 916 may be configured to electrically connect the battery devices 906 and / or battery packs 910 to one or more electric rotating machines 800 of the vehicle 900. It may be defined that the vehicle electrical system 916 is configured to transmit electrical power or current, for example, between one or more electric rotating machines 800 (and / or powertrain 904) and the battery devices 906 and / or battery packs 910.
[0103] It should be understood that embodiments of the rotary transformers 100a-100b and the electric rotating machine 800 can be applied to configurations, structures, or devices different from the vehicle 900, for example, for charging batteries not located in the vehicle, or for wind turbine generators (WTGs) including generators, etc. When one item in this disclosure is disclosed as being connected to another item, it generally implies that the two items are fluidly connected, electrically connected, and / or mechanically connected to each other.
[0104] This invention is not limited to the embodiments described above. Rather, this invention relates to and covers all different embodiments falling within the scope of the independent claims.
Claims
1. A rotary transformer (100a-100b) for transmitting electrical signals to the rotor (802) of an electrically rotating machine (800), wherein, The rotary transformers (100a-100b) include: Fixed unit (102), and A rotatable unit (104) is provided, which is capable of rotating about a rotation axis (105) relative to the fixed unit (102). The fixing unit (102) includes a first core (106a-106b), and the first core (106a-106b) includes a first compartment (130) that accommodates one or more main windings (108) of the rotary transformer (100a-100b). The rotatable unit (104) includes a second core (110a-110b), and the second core (110a-110b) includes a second compartment (118) that accommodates one or more secondary windings (112) of the rotary transformer (100a-100b). The first core (106a-106b) is annular and configured to surround the rotation axis (105). The second core portion (110a-110b) is annular and configured to rotate around and about the rotation axis (105). The first core (106a-106b) and the second core (110a-110b) form a gap (140) between each other. The rotary transformers (100a-100b) include an inlet (142) for cooling fluid to cool one or more of the stationary unit (102) and the rotatable unit (104). The rotary transformers (100a-100b) include an outlet (144) for the cooling fluid. One of the first core (106a-106b) and the second core (110a-110b) includes a first conduit (146) for guiding the cooling fluid to one of the first compartment (130) and the second compartment (118), and The first pipe (146) is connected to the inlet (142) of the rotary transformer (100a-100b).
2. The rotary transformer (100a-100b) according to claim 1, wherein, The first core (106a-106b) includes the first conduit (146) for guiding the cooling fluid to the first compartment (130).
3. The rotary transformer (100a-100b) according to claim 2, wherein, The first conduit (146) is configured to direct the cooling fluid to the first compartment (130) for cooling one or more of the first core (106a-106b) and the main winding (108).
4. The rotary transformer (100a-100b) according to any one of claims 1 to 3, wherein, The first conduit (146) is connected to the outlet (144) of the rotary transformer (100a-100b).
5. The rotary transformer (100a-100b) according to any one of claims 1 to 4, wherein, The first conduit (146) is also configured to guide an electrical connection (148) for one or more of the main winding (108) and the secondary winding (112).
6. The rotary transformer (100a-100b) according to any one of claims 1 to 5, wherein, The rotary transformer (100a-100b) includes one or more electrical connections (148) for one or more of the main winding (108) and the auxiliary winding (112), and At least one or more portions of the one or more electrical connectors (148) are located in the first conduit (146).
7. The rotary transformer (100a-100b) according to any one of claims 1 to 6, wherein, One of the first core (106a-106b) and the second core (110a-110b) includes a second conduit (150) for guiding the cooling fluid away from one of the first compartment (130) and the second compartment (118), and The second pipe (150) is connected to the outlet (144) of the rotary transformer (100a-100b).
8. The rotary transformer (100a-100b) according to any one of claims 1 to 7, wherein, The first compartment (130) is annular. The second compartment (118) is annular. The first conduit (146) has a first spout (154) that opens toward one of the first compartment and the second compartment. One of the fixed unit (102) and the rotatable unit (104) includes a curved partition (168) positioned in one of the first compartment (130) and the second compartment (118), and The curved baffle (168) forms a curved channel (176) with the wall (172, 174) of one of the first compartment (130) and the second compartment (118), the curved channel (176) for guiding the cooling fluid from the first nozzle (154) of the first pipe (146) and flowing about the axis of rotation (105).
9. The rotary transformer (100a-100b) according to claim 8, wherein, The curved channel (176) includes two or more annular paths (178, 180) for the cooling fluid. The two or more annular paths (178, 180) extend around the rotation axis (105). Wherein, one of the two or more loop paths (178, 180) is radially located inside the other loop path (180) of the two or more loop paths (178, 180), and The curved channel (176) is configured to guide the cooling fluid from one of the two or more annular paths (178, 180) that is radially inside another annular path (180) of the two or more annular paths (178, 180) to another annular path (180) that is radially outside another annular path (178, 180) of the two or more annular paths (178, 180).
10. The rotary transformer (100a-100b) according to any one of claims 1 to 9, wherein, One of the fixed unit (102) and the rotatable unit (104) includes a cover (186) covering one of the first compartment (130) and the second compartment (118), and One or more of the main winding (108) and the secondary winding (112) are enclosed by the cover (186) and one of the first core (106a-106b) and the second core (110a-110b).
11. The rotary transformer (100a-100b) according to claim 10, wherein, The curved partition (168) is attached to the cover (186).
12. The rotary transformer (100a-100b) according to claim 10 or 11, wherein, One or more of the cover (186) and the curved partition (168) are made of a material comprising a polymer or a polymer composite or a material composed of a polymer or a polymer composite.
13. The rotary transformer (100a-100b) according to any one of claims 1 to 12, wherein, The rotary transformers (100a-100b) include a cooling fluid system (200) for cooling one or more of the stationary unit (102) and the rotatable unit (104), and The cooling fluid system (200) includes one or more of the following groups: • First compartment (130); • Second compartment (118); • The inlet (142); • The outlet (144); • The first conduit (146); • The second conduit (150); • First Space (156); • Second Space (158); • Third Space (166); • The curved channel (176). • The two or more loop paths (178, 180); and • Outer shell (196).
14. An electric rotating machine (800), comprising: stator(), A rotor () capable of rotating relative to the stator () about a rotation axis (). The rotary transformer (100a-100b) according to any one of claims 1 to 13.
15. A vehicle (900) comprising one or more of the following groups: The rotary transformer (100a-100b) according to any one of claims 1 to 13; and The electric rotary machine (800) according to claim 14.