SANDWICH-TYPE CONNECTION DEVICE FOR CONNECTING THE HOLLOW CONDUCTORS OF AN INTERNALLY COOLED ELECTRIC MACHINE AND ELECTRIC MACHINE COMPRISING A CONNECTION DEVICE OF THIS TYPE
The invention relates to a connection device (1) for electrically and hydraulically connecting electrical hollow conductors (17) of an internally cooled electric machine (23), comprising an electrically conductive connection part (2) with one or more hollow conductor connections (6), a side part (24) arranged on one side of the connection part (2), and a seal (5) arranged between the connection part (2) and the side part (24). According to the invention, at least two coolant channels (16) are integrated in the stack, via which a coolant can be fed into the hollow conductor (17) or coolant flowing out of the hollow conductors (17) can be collected.
The invention relates to a connection device (1) for electrically and hydraulically connecting a plurality of electrical hollow conductors (4) of an internally cooled electrical machine. The connection device (1) comprises a connection piece (2), by means of which the hollow conductors (4) can be electrically and hydraulically connected. The connection piece (2) has a plurality of connection points (14) for the attachment of ends of the electrical hollow conductors (4), a hollow interior (15), which is connected to the hollow conductors (4), and an electrical connection point (9) for connecting the hollow conductors (4) to an electric potential. According to the invention, an electrically insulating pipe (7) is also provided, which is connected to the connection piece (2) either directly or by means of an adapter element (6) and which is hydraulically connected to the hollow conductor or hollow conductors (4).
H02K 3/22 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors consisting of hollow conductors
H02K 5/22 - Auxiliary parts of casings not covered by groups , e.g. shaped to form connection boxes or terminal boxes
H02K 3/50 - Fastening of winding heads, equalising connectors, or connections thereto
3.
CONNECTION PLATE FOR ELECTRICALLY AND HYDRAULICALLY CONNECTING THE HOLLOW CONDUCTORS OF AN INTERNALLY COOLED ELECTRIC MACHINE AND ELECTRIC MACHINE COMPRISING A CONNECTION PLATE OF THIS TYPE
The invention relates to an electric machine (1) comprising a winding formed of hollow conductors (5), wherein the hollow conductors (5) each have open ends (12), via which a coolant can be fed into the hollow conductors (5) or can exit the hollow conductors (5). The electric machine (1) comprises a connection unit (3) for electrically and hydraulically connecting the hollow conductors (5) to a connection plate (6), in which multiple electrical conductor paths (11) are integrated, wherein the connection plate (6) has multiple through-openings (15) in which the ends (12) of the hollow conductors (5) are arranged.
H02K 3/22 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors consisting of hollow conductors
H02K 9/193 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling mediumArrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with means for preventing leakage of the cooling medium
H02K 3/50 - Fastening of winding heads, equalising connectors, or connections thereto
H02K 15/00 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
H02K 9/197 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil in which the rotor or stator space is fluid-tight, e.g. to provide for different cooling media for rotor and stator
12 - Land, air and water vehicles; parts of land vehicles
42 - Scientific, technological and industrial services, research and design
Goods & Services
Electrical engines; Electric driving motors for machines; Generators; Power generators for vehicles. Electric motors for motor cars; Motors, electric, for land vehicles. Development of engines; Engineering consultancy relating to manufacture.
The invention relates to an internally cooled electric machine comprising a rotor (4), a stator (5), and a winding (7) located in the rotor (4) or stator (5) for generating an electromagnetic field, wherein: the winding (7) comprises a plurality of electrical coils (21) which are formed from individual waveguides (10) such as pins or hairpins (2) which are inserted into the rotor (4) or stator (5). The waveguides comprise a continuous channel (12) through which a coolant can be passed. The winding (7) forms a winding head (8) at each of the end faces of the rotor (4) or stator (5). According to the invention, in the region of one of the winding heads (8), one end (20) of a first waveguide (10) and one end (20) of a second waveguide (10) are electrically and optionally also hydraulically connected to one another by means of a connecting piece (22), the connecting piece (22) being printed using a 3D printing process.
The invention relates to an electric machine (1) having a rotor (3), a stator (2) and several rigid winding pieces (5) formed as hollow conductors, which form various coils of a winding (4) of the electric machine (1) and are each part of a cooling circuit of the electric machine (1). According to the invention, the winding pieces (5) each have at least one lateral tap (34) in the region of their end sections (8), via which tap a coolant can be fed into the winding pieces (5) or removed from the winding pieces (5).
H02K 3/22 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors consisting of hollow conductors
H02K 3/24 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
H02K 9/193 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling mediumArrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with means for preventing leakage of the cooling medium
7.
Electric machine having multiple rigid winding pieces in the form of hollow conductors and hydraulic connection part and seal with opposing surfaces
The invention relates to an electric machine (1) having: a rotor (3); a stator (2); multiple winding pieces (5) which are in the form of hollow conductors, form different coils of a winding (4) of the electric machine (1) and are each part of a coolant circuit of the electric machine (1); and multiple external phase connections (L1-L3) which are electrically connected to the winding pieces (5). According to the invention, a hydraulic connection part (15) to which a number of the winding pieces (5) are hydraulically connected, and a seal (27) which has multiple passages (28), in each of which an end portion (8) of one of the winding pieces (5) is situated, are provided, the hydraulic connection part (15) and the seal (27) having opposing surfaces (29, 30) which rest against each other in order to ensure sealing of the individual connections of the winding pieces (5) to the hydraulic connection part (15).
H02K 3/24 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
H02K 3/22 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors consisting of hollow conductors
H02K 9/193 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling mediumArrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with means for preventing leakage of the cooling medium
8.
Winding piece and electric machine having such a winding piece
The invention relates to a winding piece (1), in particular in the shape of a hairpin, which is provided to be inserted into the grooves (7) of an electrical machine, comprising two limbs (2) and a curved transition region (3), which connects the two limbs (2) to each other. According to the invention, the limbs (2) each have a first portion (4) having a profile, which is adjusted to the cross-section of the groove (7), and an end portion (5), which has a round profile, wherein the winding piece (1) is formed as a hollow conductor, which has a penetrating channel (9), through which a coolant can be led.
H02K 3/12 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors arranged in slots
H02K 3/02 - Windings characterised by the conductor material
H02K 3/22 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors consisting of hollow conductors
H02K 3/24 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
H02K 3/28 - Layout of windings or of connections between windings
H02K 3/48 - Fastening of windings on the stator or rotor structure in slots
H02K 3/50 - Fastening of winding heads, equalising connectors, or connections thereto
9.
ELECTRIC MACHINE HAVING MULTIPLE RIGID WINDING PIECES IN THE FORM OF HOLLOW CONDUCTORS - HYDRAULIC CONNECTION CONCEPT II
The invention relates to an electric machine (1) having: a rotor (3); a stator (2); and multiple rigid winding pieces (5) which are in the form of hollow conductors, form different coils of a winding (4) of the electric machine (1) and are each part of a coolant circuit of the electric machine (1). According to the invention, the winding pieces (5) each have, in the region of their end portions (8), a lateral tap (34) via which a coolant can be fed into the winding pieces (5) or discharged from the winding pieces (5).
H02K 3/22 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors consisting of hollow conductors
H02K 9/00 - Arrangements for cooling or ventilating
H02K 9/193 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling mediumArrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with means for preventing leakage of the cooling medium
H02K 3/50 - Fastening of winding heads, equalising connectors, or connections thereto
10.
ELECTRIC MACHINE HAVING MULTIPLE RIGID WINDING PIECES IN THE FORM OF HOLLOW CONDUCTORS
The invention relates to an electric machine (1) having: a rotor (3); a stator (2); multiple winding pieces (5) which are in the form of hollow conductors, form different coils of a winding (4) of the electric machine (1) and are each part of a coolant circuit of the electric machine (1); and multiple external phase connections (L1 – L3) which are electrically connected to the winding pieces (5). According to the invention, a hydraulic connection part (15) to which a number of the winding pieces (5) are hydraulically connected, and a seal (27) which has multiple passages (28), in each of which an end portion (8) of one of the winding pieces (5) is situated, are provided, the hydraulic connection part (15) and the seal (27) having opposing surfaces (29, 30) which rest against each other in order to ensure sealing of the individual connections of the winding pieces (5) to the hydraulic connection part (15).
H02K 3/22 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors consisting of hollow conductors
H02K 3/38 - Windings characterised by the shape, form or construction of the insulation around winding heads, equalising connectors, or connections thereto
H02K 3/50 - Fastening of winding heads, equalising connectors, or connections thereto
H02K 9/00 - Arrangements for cooling or ventilating
H02K 9/193 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling mediumArrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with means for preventing leakage of the cooling medium
H02K 15/00 - Processes or apparatus specially adapted for manufacturing, assembling, maintaining or repairing of dynamo-electric machines
H02K 15/12 - Impregnating, moulding insulation, heating or drying of windings, stators, rotors or machines
11.
WINDING PIECE AND ELECTRIC MACHINE HAVING SUCH A WINDING PIECE
The invention relates to a winding piece (1), in particular in the form of a hairpin, which is provided to be inserted into the grooves (7) of an electric machine, comprising two limbs (2) and a curved transition region (3), which connects the two limbs (2) to one another. According to the invention, the limbs (2) each have a first section (4) having a profile that is adjusted to the cross section of the groove (7), and an end section (5), which has a round profile, wherein the winding piece (1) is designed as a waveguide, which has a continuous channel (9) through which a coolant can be led.
A connecting piece for connecting a hollow electric conductor and a coolant line includes a fluid-tight housing (1) having a hollow inner space; a hollow conductor opening (2) in the housing (1); a coolant line opening (3) in the housing (1); and an electrically insulating separating element (4). The inner space hydraulically connects the hollow conductor opening (2) and the coolant line opening (3). The housing (1) includes a coolant line-side housing part (5) and a hollow conductor-side housing part (6). The separating element (4) is arranged between the coolant line-side housing part (5) and the hollow conductor-side housing part (6), and has a coolant channel (7). The separating element (4) is formed as a ball.
F16L 25/02 - Construction or details of pipe joints not provided for in, or of interest apart from, groups specially adapted for electrically insulating the two pipe ends of the joint from each other
F16L 39/00 - Joints or fittings for double-walled or multi-channel pipes or pipe assemblies
F16L 41/03 - Branch units, e.g. made in one piece, welded, riveted comprising junction pieces for four or more pipe members
H02K 3/22 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors consisting of hollow conductors
H02K 9/19 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
13.
ELECTROMAGNETIC ACTUATING DEVICE, SOLENOID VALVE AND PUMP
The invention relates to an electromagnetic actuating device (1), comprising a drive unit (28) with an electric coil (13) for generating a magnetic field and an armature (10), which is activated by the magnetic field generated by the coil (13), a chamber (27, 52) through which a fluid flows, and an actuating element (29), which can control or regulate the fluid flowing through the chamber (27, 52) and which is driven by the drive unit (28). According to the invention, the coil (13) is produced from a hollow conductor and a coolant line (15) is provided, which is connected to the coil and through which part of the fluid flowing through the chamber (27, 52) can be fed to the coil (13), in order to cool same.
The invention relates to a method for connecting two hollow wires (1a, 1b), each having a hollow interior chamber (5). According to the invention, an auxiliary element (3, 6) is first inserted into the interior chamber (5) of at least one of the hollow wires (1a, 1b), and then the hollow wires (1a, 1b) are connected to each other. The invention further relates to an arrangement consisting of at least two hollow wires connected to each other.
B21F 15/08 - Connecting wire to wire or other metallic material or objectsConnecting parts by means of wire wire with wire with additional connecting elements or material making use of soldering or welding
H01R 4/60 - Connections between or with tubular conductors
An electrical hollow conductor (1) in the shape of a tubular body (2) having a hollow interior (3) for continuously winding an electromagnetic coil, wherein the body (2) comprises an electrically conductive material, has an outside diameter and an inside diameter, wherein a ratio of the outside diameter to the inside diameter is in a range of 1.25:1 to 4:1, and is coated with an electrically insulating layer (4) on an outer casing surface of the body (2) and wherein the interior (3) is configured so that it hydraulically or pneumatically connects a first open end of the body (2) and a second open end of the body (2).
H02K 3/22 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors consisting of hollow conductors
H02K 3/24 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors with channels or ducts for cooling medium between the conductors
H01B 7/42 - Insulated conductors or cables characterised by their form with arrangements for heat dissipation or conduction
H02K 9/193 - Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with provision for replenishing the cooling mediumArrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil with means for preventing leakage of the cooling medium
H02K 3/04 - Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
The present invention relates to a connecting piece for connecting an electric hollow conductor and a coolant line, comprising: a fluid-tight housing (1) having a hollow inner space; a hollow conductor opening (2) in the housing (1) for receiving the electric hollow conductor; a coolant line opening (3) in the housing (1) for receiving the coolant line; and an electrically insulating separating element (4), wherein: the inner space, the hollow conductor opening (2) and the coolant line opening (3) are designed so as to be hydraulically connected; the housing (1) has a housing part (5) on the coolant line side and a housing part (6) on the hollow conductor side, the latter being separatable from the housing part (5) on the coolant line side; and wherein the separating element (4) is arranged between the housing part (5) on the coolant line side and the housing part (6) on the hollow conductor side, the housing part (5) on the coolant line side and the housing part (6) on the hollow conductor side being designed to be separate from one another, and has a coolant channel (7), the coolant channel (7) providing at least a part of the inner space. In order to provide a connecting piece of the aforementioned type, which can be produced in a simple and error-tolerant manner, the present invention proposes that the separating element (4) is designed as a sphere.
The invention relates to an electric machine component (14) comprising at least one winding (U, V, W) for generating a magnetic field, the winding having at least one hollow conductor (3) with a casing (4) and an inner cavity (25), through which a coolant can be passed and said winding (U, V, W) having two ends (U1, U2,...,W1, W2), at which an electric supply voltage (L1, L2, L3, 0) is connected. According to the invention, the hollow conductors (3) are designed as round tubes and have an outer diameter ranging from 1.0 mm to 4 mm, the ends (U1, U2,...,W1, W2) of the winding (U, V, W) can act as a coolant inlet or coolant outlet, and said ends (U1, U2,..., W1, W2) of the winding (U, V, W) are connected to a connection piece (6) that comprises a coolant inflow (8) and/or a coolant outflow (9), multiple hollow conductor connections (7) for connecting hollow conductors (3), a distribution channel, via which the coolant is fed into at least one hollow conductor (3), and/or a collection channel into which the coolant emerging from at least one hollow conductor (3) flows and is conducted to the coolant outflow (9) of the connection piece (6).
This invention relates to an electrical hollow conductor in the shape of a tubular body having a hollow interior for continuously winding an electromagnetic coil, wherein the body comprises an electrically conductive material, has an outside diameter and an inside diameter, and is coated with an electrically insulating layer on an outer casing surface of the body and wherein the interior is configured so that it hydraulically or pneumatically connects a first open end of the body and a second open end of the body. In order to specify an electrical hollow conductor that can be used for small and mid-sized electromagnetic machines, this invention proposes that a ratio of the outside diameter to the inside diameter is in a range of 1.25:1 to 4:1. This invention further relates to a use of the electrical hollow conductor, a connecting piece for the electrical hollow conductor, and an electromagnetic machine that has the electrical hollow conductor.
The invention relates to an electrical hollow conductor (1) in the shape of a tubular body (2) having a hollow interior (3), for continuously winding an electromagnetic coil, wherein the body (2) comprises an electrically conductive material, has an outside diameter and an inside diameter, and is coated with an electrically insulating layer (4) on an outer lateral surface of the body (2) and wherein the interior (3) is designed in such a way that the interior hydraulically or pneumatically connects a first opening of the body (2) and a second open end of the body (2). According to the invention, in order to specify an electrical hollow conductor (1) that can be used for small and medium electromagnetic machines, a ratio of the outside diameter to the inside diameter is in a range of 1.25:1 to 4:1. The invention further relates to a use of the electrical hollow conductor (1), a connecting piece for the electrical hollow conductor (1), and an electromagnetic machine that has the electrical hollow conductor (1).
