Lamination stack for electric machine, in particular of motor vehicle, electric machine and motor vehicle

Abstract

The invention relates to a laminated core (1) for an electric machine, comprising at least three laminated core parts (2, 3, 4, 5) arranged one behind the other in an axial direction (9), namely: a first laminated core part (2), which has at least two first temperature control channels (16, 17) through which a temperature control medium can flow in order to control the temperature of the laminated core (1); and a second laminated part (3) which axially adjoins the first axial end face (A1) of the first laminated part (2) and which has at least one second temperature control channel (19), the second temperature control channel is at least fluidically connected to the two first temperature control channels (16, 17) and thus can be flowed through by a temperature control medium at least from the two first temperature control channels (16, 17) and has a first flow cross-section through which a temperature control medium can flow.

Description

Technical Field

[0001] The invention relates to a laminated core for an electric machine, in particular an electric machine of a motor vehicle. The invention also relates to an electric machine for a motor vehicle, which has at least one such laminated core. Furthermore, the invention relates to a motor vehicle. Background Art

[0002] EP 2 933 901 B1 discloses a method for automatically manufacturing a stator winding of a rotating electric machine. In addition, DE 10 2008 064 495 B3 discloses an electric machine. An electric machine is known from EP 3 324 517 A1. In addition, US 2021 / 0347245 A1 discloses a cooling system for an electric motor. Summary of the invention

[0003] The object of the present invention is to provide a laminated core for an electric machine, in particular an electric machine of a motor vehicle, an electric machine for a motor vehicle having at least one such laminated core, and a motor vehicle, which allow particularly advantageous temperature control, ie cooling and / or heating, of the laminated core to be achieved in a particularly simple manner.

[0004] This object is achieved according to the invention by a laminated core having the features of claim 1, by an electric machine having the features of claim 8 and by a motor vehicle having the features of claim 10. Advantageous embodiments of the invention are the subject matter of the dependent claims.

[0005] The first aspect of the present invention relates to a laminated core for an electric motor, in particular a motor vehicle. This means, for example, that the motor vehicle (also referred to as a vehicle, preferably configured as a car, in particular a sedan) has an electric motor in its fully manufactured state and can be electrically driven, in particular purely electrically driven, by means of the electric motor. The electric motor has a laminated core. The laminated core has at least three laminated core components that are arranged one after the other and therefore in sequence in the axial direction of the laminated core and therefore in the axial direction of the motor. In the installation position of the laminated core, the axial direction of the laminated core coincides with the axial direction of the motor. In particular, the motor has a stator and a rotor, which can be driven by means of the stator and can therefore rotate relative to the stator around the motor rotation axis. The axial direction of the motor and therefore the axial direction of the laminated core coincide with the motor rotation axis. The laminated core occupies its installation position in the fully manufactured state of the motor having the laminated core.

[0006] The first lamination stack component in the lamination stack component has at least two, especially more than two first temperature control channels, which can be preferably liquid temperature control medium, especially in the axial direction of the lamination stack, so as to temperature control, that is, cool and / or heat the lamination stack. The lamination stack can be cooled by a temperature control medium, which can be a component of the motor, for example, oil. In particular, the heat transfer from the lamination stack to the temperature control medium is carried out. This is especially done when the temperature control medium has a lower temperature than the lamination stack. In this case, the temperature control medium is used as a coolant, especially as a cooling liquid, in order to cool the lamination stack. In addition, it can be considered that the temperature control medium is used to heat the lamination stack. In this case, heat is transferred from the temperature control medium to the lamination stack, which is especially done when the temperature control medium has a higher temperature than the lamination stack. The temperature control medium is especially oil. In particular, the corresponding first temperature control channel can be flowed through by the temperature control medium along the corresponding first flow direction, and it is preferably provided that the first flow direction extends in the axial direction of the lamination stack and therefore in the axial direction of the motor, and therefore parallel to the axial direction of the lamination stack.

[0007] In particular, the first lamination stack component is composed of a plurality of lamination parts, in particular single laminations, which are constructed separately and connected to each other, and these single laminations can be arranged successively in the axial direction of the lamination stack. The first lamination stack component has a first axial end face. The second lamination stack component in this lamination stack component is adjacent to the first axial end face of the first lamination stack component in the axial direction, that is, in the axial direction of the lamination stack and therefore in the axial direction of the motor. The second lamination stack component has a second axial end face, which is away from, and therefore faces away from, the first end face of the first lamination stack component in the axial direction of the lamination stack and therefore in the axial direction of the motor. The third lamination stack component is adjacent to the second end face of the second lamination stack component in the axial direction, that is, in the axial direction of the lamination stack and therefore in the axial direction of the motor. The second lamination stack component has at least one, in particular more than one, second temperature control channel, which is fluidly connected to at least the two first temperature control channels of the first lamination stack component and can be flowed through by a temperature control medium at least from the two first temperature control channels. This means that the temperature control medium, in particular, first flows through the first temperature control channel and flows out of the first temperature control channel and flows into the second temperature control channel common to the first temperature control channel and can therefore flow through the second temperature control channel. In particular, the temperature control medium can flow through the second temperature control channel in the axial direction of the laminated stack. This means that, for example, the temperature control medium can flow through the second temperature control channel in the second flow direction, preferably the second flow direction extends in the axial direction of the laminated stack, and therefore parallel to the axial direction of the laminated stack. Since the second temperature control channel is fluidly connected to the first temperature control channel, it can be said that the first temperature control channel merges into or merges into the second temperature control channel, so that the second laminated stack component causes the channel to merge or merge. When the channels merge, the first temperature control channel merges into the second temperature control channel. Since the second temperature control channel extends in the second laminated stack component, the channel merge is integrated into the second laminated stack component and is therefore an integrated channel merge. For example, the second laminated stack component is composed of a plurality of second laminated parts, in particular second individual laminates, which are separately constructed and connected to each other, and the second individual laminates can be arranged one after another in the axial direction of the laminated stack. Alternatively or additionally, for example, the third laminated core part can be composed of a plurality of third laminated core parts, in particular individual laminates, which are constructed separately and connected to each other, and which can be arranged one after the other in the axial direction of the laminated core. If the axial direction or "axial direction" is mentioned below, this is to be understood as the axial direction of the laminated core and thus the axial direction of the electric machine, unless otherwise specified.

[0008] The second temperature control channel has a first flow cross section through which a temperature control medium can flow, and in particular through which the temperature control medium can flow along or in a second flow direction.

[0009] The third laminated core component axially adjacent to the second end face of the second laminated core component has a third temperature control channel which is fluidly connected to the second temperature control channel and can be flowed through by a temperature control medium from the second temperature control channel, and the third temperature control channel has a second flow cross section which is smaller than the first flow cross section. In particular, the temperature control medium can flow through the third temperature control channel in the axial direction of the laminated core. In other words, for example, the temperature control medium can flow through the third temperature control channel in the third flow direction, and the third flow direction preferably extends in the axial direction of the laminated core, and therefore parallel to the axial direction of the laminated core. In particular, it is provided that for each second temperature control channel of the second laminated core component, a third temperature control channel, in particular exactly one matching temperature control channel, of the third laminated core component is provided, and the second temperature control channel is fluidly connected to the matching third temperature control channel, so that the second temperature control channel and the third temperature control channel can be flowed through by a temperature control medium, in particular by the same temperature control medium. In this case, the third temperature control channel has a second flow cross section which is smaller than the first flow cross section, so that a narrowing of the flow cross section or a reduction of the flow cross section is formed or caused by the third temperature control channel or by the third laminated core component. This achieves jet formation, within the scope of which jet formation, a jet stream, also referred to as a jet, is formed by the temperature-control medium flowing through the third temperature-control channel, by means of the third temperature-control channel or by means of the third flow cross section, and the jet stream is ejected, for example, from the laminated core as a whole or can be ejected into the environment of the laminated core, especially during the operation of the motor. It can be seen that the second temperature-control channel converges, thus merges with the first temperature-control channel and thus converges, thus merges, the temperature-control medium flowing through the first temperature-control channel and, for example, configured as oil, and the third temperature-control channel forms the mentioned jet stream from the temperature-control medium flowing through the second temperature-control channel and the third temperature-control channel, and the jet stream is ejected from the laminated core into the environment of the laminated core through the third temperature-control channel. For example, the jet stream ejected from the laminated core is ejected onto a local area of ​​at least one winding of the motor carried by the laminated core. In particular, the local area can be a winding head of the winding, and the winding head of the winding can be wetted with the temperature-control medium particularly advantageously by ejecting the jet stream onto the winding head. Therefore, the winding head can be particularly advantageously temperature-controlled. Overall, the laminated core allows particularly advantageous conduction of the temperature control medium and advantageous provision of the spray jet, so that additional components for conducting the temperature control medium and for forming the spray jet can be avoided. The laminated core and the motor can thus be manufactured or assembled particularly simply and thus save time and costs.

[0010] In particular, the third temperature control channel opens into a fourth axial end face of the third laminated core part, which faces away in the axial direction of the laminated core and thus faces away from the first and second axial end faces.

[0011] In order to achieve particularly advantageous temperature control, it is preferably provided that the respective temperature control channel is formed along its respective circumference, in particular completely around and directly by the respective laminated core component. The respective circumference of the respective temperature control channel extends around the respective flow direction, along which the temperature control medium can flow or flow through the respective temperature control channel.

[0012] The second laminated core part adjoins the first laminated core part in a connecting direction extending in the axial direction of the laminated core, and the third laminated core part adjoins the second laminated core part in said connecting direction. It is preferably provided that, viewed in said connecting direction, the third laminated core part is the last laminated core part of the laminated core, which ends the laminated core, thereby enabling particularly advantageous jet formation and thus temperature control.

[0013] The first laminated core element has a third axial end face which faces away in the axial direction, thus faces away from the first axial end face, the second axial end face and the fourth axial end face.

[0014] In order to be able to supply the temperature control channels with a temperature control medium particularly simply and therefore cost-effectively and thus to achieve particularly advantageous temperature control, it is provided in one embodiment of the invention that the laminated core has a fourth laminated core part adjoining the third axial end face of the first laminated core part in the axial direction of the laminated core, and thus in the axial direction of the laminated core, and the fourth laminated core part has a fourth temperature control channel fluidically connected to one of the first temperature control channels and a fifth temperature control channel fluidically connected to another of the first temperature control channels. The fourth temperature control channel and the fifth temperature control channel each have an inlet extending in the radial direction or obliquely to the radial direction of the laminated core and thus to the radial direction of the electric machine, through which a preferably liquid temperature control medium can be introduced into the fourth temperature control channel and the fifth temperature control channel from outside the laminated core in the radial direction or in a direction extending obliquely to the radial direction of the laminated core and thus to the radial direction of the electric machine. If "radial" or "radial direction" is mentioned, this is to be understood, unless otherwise stated, as the radial direction of the laminated core and thus to the electric machine, which extends perpendicularly to the axial direction of the laminated core and thus to the electric machine. This embodiment allows a particularly simple and advantageous introduction of the temperature control medium into the fourth temperature control channel and the fifth temperature control channel and via these temperature control channels into the other temperature control channels of the laminated core. The above and below descriptions of the corresponding first temperature control channel, second temperature control channel and third temperature control channel can also be transferred to the fourth temperature control channel and the fifth temperature control channel without any problems, and vice versa.

[0015] Another embodiment is characterized in that the individual lamination stack components are manufactured individually and independently of one another and are arranged close to one another in the axial direction of the lamination stack and are thus assembled together. This allows a particularly simple and cost-effective structure of the lamination stack to be achieved, thereby enabling particularly effective and efficient cooling to be achieved in a simple and cost-effective manner.

[0016] For example, the fourth laminated core component is formed or assembled from a plurality of fourth laminated parts, in particular individual laminates, which are constructed separately and connected to each other, and these individual laminates are arranged one after another in the axial direction, for example. It is conceivable that the corresponding laminated part is constructed in one piece and is therefore formed from a single piece. In other words, it is preferably provided that the corresponding laminated part is not assembled from a plurality of parts that are constructed separately and connected to each other, but preferably the corresponding laminated part is formed from a single piece, and is therefore formed from a single block or is constructed as a single block.

[0017] In another particularly advantageous embodiment of the present invention, it is provided that the first laminated core component has a plurality of teeth that are arranged successively in the circumferential direction of the laminated core extending around the axial direction of the laminated core and are used to carry the above-mentioned winding. In particular, the winding has a first length region, and the winding is held on the teeth over this first length region. The second length region of the winding protrudes from the laminated core, for example, in the axial direction of the laminated core and forms, for example, the above-mentioned winding head. In particular, if the laminated core is a component of the stator of an electric motor, the teeth are also referred to as stator teeth. It is further provided that the first laminated core component has a plurality of slots that are arranged successively in the circumferential direction of the laminated core extending around the axial direction of the laminated core and are arranged between the teeth for the winding to pass through. In other words, for example, in the fully manufactured state of the electric motor, the winding, in particular the first length region, passes through the slots in the axial direction.

[0018] The first temperature control channel of the first laminated core component is a plurality of channels or also simply channels. In order to achieve particularly effective and efficient temperature control, in another embodiment of the invention, one of the teeth is assigned a first channel of the channels, and this tooth at least partially overlaps the assigned first channel outwardly in the radial direction of the laminated core and thus in the radial direction of the electric machine. This tooth can be particularly advantageously temperature controlled. The above and below descriptions of this tooth can also be transferred to the other teeth without any problems, and vice versa.

[0019] Furthermore, it is preferably provided that one of the slots is assigned a second channel, and that this slot at least partially overlaps the assigned second channel outwardly in the radial direction of the laminated core. This allows the slot and thus the first length region of the winding arranged in this slot to be temperature-controlled effectively and efficiently. The above and below descriptions of this slot can also be transferred without any problems to the other slots and vice versa.

[0020] Another embodiment is characterized in that the first channel has a flow cross section which is elongated when viewed in the radial direction and through which the temperature control medium can flow. In other words, the first channel is preferably configured as a slit, whose elongated extension or elongated extension direction extends in the radial direction of the laminated core. This allows a particularly advantageous temperature control of the tooth.

[0021] In order to be able to particularly advantageously temperature-control the slot, in another embodiment of the present invention, it is provided that the second channel has a flow cross section which extends elongated as viewed in the circumferential direction of the laminated core and through which the temperature-control medium can flow. In other words, it is preferably provided that the second channel is a slit whose elongated extension or extension direction extends in the circumferential direction of the laminated core. As a result, the slot can be particularly effectively and efficiently temperature-controlled.

[0022] Preferably, it is provided that the first flow cross section and / or the second flow cross section are configured to be circular, so that a jet can be formed particularly advantageously. The grooves and teeth of the first lamination stack component form a groove image or are a component of the groove image, which is also provided in the second lamination stack component, the third lamination stack component and / or the fourth lamination stack component, for example. Therefore, the previous and subsequent descriptions of the grooves and teeth of the first lamination stack component can be transferred to the second lamination stack component, the third lamination stack component and the fourth lamination stack component without any problem. Here, for example, the description of the first channel of the first lamination stack component can also be transferred to the fourth temperature control channel, which is connected to the first channel fluid, for example. In addition, for example, the previous description of the second channel can be transferred to the fifth temperature control channel, which is connected to the second channel fluid, for example. Thus, a particularly advantageous guidance of the temperature control medium and a subsequent particularly advantageous temperature control can be achieved.

[0023] A second aspect of the invention relates to an electric machine for a motor vehicle, comprising at least one laminated core according to the first aspect of the invention. Advantages and advantageous embodiments of the first aspect of the invention may be regarded as advantages and advantageous embodiments of the second aspect of the invention and vice versa.

[0024] In a particularly advantageous embodiment of the second aspect of the invention, it is provided that the electric machine has a stator and a rotor, and the laminated core is a stator laminated core, thus a stator laminated core. This allows particularly advantageous temperature control of the electric machine to be achieved.

[0025] The third aspect of the present invention relates to a motor vehicle, preferably configured as a car, in particular a sedan, which comprises at least one electric machine according to the second aspect of the present invention and can be driven electrically, in particular purely electrically, by means of the electric machine. The advantages and advantageous embodiments of the first and second aspects of the present invention can be regarded as advantages and advantageous embodiments of the third aspect of the present invention and vice versa. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Further details of the present invention are obtained from the following description of preferred embodiments together with the accompanying drawings. The accompanying drawings are as follows:

[0027] Figure 1 A schematic and perspective exploded view of a laminated core for an electric machine of a motor vehicle is shown;

[0028] Figure 2A schematic perspective view partially showing a lamination stack;

[0029] Figure 3 Another schematic perspective view partially showing a lamination stack;

[0030] Figure 4 Another schematic perspective view showing a portion of a lamination stack; and

[0031] Figure 5 A further schematic perspective view shows a section of a laminated core. DETAILED DESCRIPTION

[0032] In the figures, identical or functionally identical elements are provided with the same reference symbols.

[0033] Figure 1 A laminated core 1 for an electric motor of a motor vehicle (also referred to as a vehicle) is shown in a schematic and perspective exploded view. This means that the motor vehicle has an electric motor in its fully manufactured state and can be driven electrically, in particular purely electrically, by means of the electric motor. The electric motor has a stator and a rotor, which can be driven by means of the stator and can thus rotate relative to the stator about the motor rotation axis. Through its rotor, the electric motor can provide a drive torque to drive the motor vehicle. Thus, the motor vehicle is, for example, a hybrid vehicle or an electric vehicle, in particular a battery electric vehicle (BEV). Preferably, the electric motor is a high-voltage component, whose voltage, in particular the electrical operating voltage or the rated voltage is preferably greater than 50 volts, in particular greater than 60 volts and very preferably several hundred volts.

[0034] The laminated core 1 is preferably a component of the stator and is therefore a stator laminated core. The laminated core 1 has (at this moment exactly) seven laminated core components, namely a first laminated core component 2, a second laminated core component 3, a third laminated core component 4, a fourth laminated core component 5, a fifth laminated core component 6, a sixth laminated core component 7 and a seventh laminated core component 8. The laminated core components 2 and 6 are preferably identical and therefore have the same structure. The laminated core components 3 and 7 are preferably identical and therefore have the same structure. In addition, it is preferably provided that the laminated core components 4 and 8 are identical and therefore have the same structure. It can be seen that the laminated core components 2, 3, 4, 5, 6, 7 and 8 are arranged successively and therefore in sequence in the axial direction of the laminated core 1 and therefore in the axial direction of the motor, and the axial direction of the motor coincides with the axial direction of the laminated core 1 and with the motor rotation axis. The axial direction of the laminated core 1 and therefore the axial direction of the motor is indicated by a double-headed arrow 9. It can be seen that in the axial direction of the laminated core 1, the laminated core parts 4 and 8 are the last laminated core parts of the laminated core 1. It can also be seen that the laminated core part 2 is arranged in the axial direction between the laminated core parts 3 and 5 and the laminated core part 3 is arranged in the axial direction between the laminated core parts 2 and 4. The laminated core part 5 is arranged in the axial direction between the laminated core parts 2 and 6, the laminated core part 6 is arranged in the axial direction between the laminated core parts 5 and 7, and the laminated core part 7 is arranged in the axial direction between the laminated core parts 6 and 8. In particular, the laminated core part 5 is arranged in the axial direction of the laminated core 1 exactly in the center of the laminated core 1, so that the laminated core part 5 is also referred to as a center part.

[0035] from Figure 1 Taking the example of the laminated core component 4, it can be clearly seen that the respective laminated core components 2, 3, 4, 5, 6, 7, 8 have a plurality of teeth 10 (also called stator teeth) which are arranged one after another in the circumferential direction around the laminated core 1 and a plurality of slots 11 (also called stator slots) which are arranged one after another in the circumferential direction of the laminated core 1 and are arranged between the teeth 10. The circumferential direction of the laminated core 1 is indicated by a double-headed arrow 12 and extends around the axial direction of the laminated core 1. In the fully manufactured state of the electric machine, at least one winding (also called stator winding) of the electric machine is held on the laminated core 1, in particular in such a way that the winding is held on the laminated core 1 over a first length region of the winding. The first length region extends, for example, in the axial direction of the laminated core 1 and passes through the slots 11. The respective second length region of the winding protrudes from the laminated core 1 and thus from the last laminated core components 4 and 8 in the axial direction of the laminated core 1, whereby the second length region forms at least one winding head of the at least one winding. In the axial direction of the laminated core 1, the winding head protruding from the last laminated core part 4 viewed in the axial direction is Figure 3 and is marked there with reference numeral 13. In addition, Figure 1, it can be seen that the laminated core component 3 adjoins the laminated core component 2 in a first connecting direction extending in the axial direction and indicated by the arrow 14, and the laminated core component 4 adjoins the laminated core component 3 in the first connecting direction, and the laminated core component 2 adjoins the laminated core component 5 in the first connecting direction. The laminated core component 5 adjoins the laminated core component 2 in a second connecting direction extending in the axial direction, opposite to the first connecting direction and indicated by the arrow 15, and the laminated core component 6 adjoins the laminated core component 5 in the second connecting direction, and the laminated core component 7 adjoins the laminated core component 6 in the second connecting direction, and the laminated core component 8 adjoins the laminated core component 7 in the second connecting direction.

[0036] Depend on Figure 2 It can be seen that the corresponding laminated core components 2, 6 have a plurality of first temperature control channels 16 and 17, wherein the first temperature control channels 16 are also referred to as first channels and the first temperature control channels 17 are also referred to as second channels. The temperature control channels 16 and 17 can be flowed through by a preferably liquid temperature control medium in order to temperature control the laminated core 1, i.e., cool and / or heat it.

[0037] The lamination stack component 2 has a first axial end face A1, and the lamination stack component 3 adjoins the axial end face A1 in the axial direction of the lamination stack 1. The lamination stack component 3 has a second axial end face A2, and the lamination stack component 4 adjoins the axial end face A2 in the axial direction, that is, in the axial direction of the lamination stack 1. Figure 2 In the figure, arrow 18 shows the corresponding flow of the temperature control medium through the temperature control channels 16 and 17. It can be seen that the laminated core component 3 has second temperature control channels 19 and 20. The temperature control channel 19 is also called the third channel, and the temperature control channel 20 is also called the fourth channel. Figure 2 It can be seen that each temperature control channel 19 is fluidly connected to at least two, in particular at least or exactly three, of the first temperature control channels 16 and 17 of the first laminated core component 2, in the present case such that each temperature control channel 19 is fluidly connected to at least or exactly two of the temperature control channels 17 and to at least or exactly one of the temperature control channels 16. As a result, two temperature control channels 17 and one temperature control channel 16 merge, i.e. converge into one, in particular exactly one, of the temperature control channels 19, so that the laminated core component 3 causes a channel convergence or channel convergence. It can also be seen that, for example, a respective temperature control channel 20 is fluidly connected to one, in particular exactly one, of the temperature control channels 16.

[0038] The respective temperature control channel 16 , 17 has a respective first flow cross section through which a temperature control medium can flow.

[0039] The laminated core component 4 has third temperature control channels 21 and 22, each temperature control channel 21 being fluidically connected to one of the temperature control channels 19 and each temperature control channel 22 being fluidically connected to one of the temperature control channels 20. The respective temperature control channels 20, 21 have respective second flow cross sections, which are smaller than the respective first flow cross sections. As a result, the laminated core component 4 causes a narrowing or tapering of the cross section. As a result, a temperature control medium can flow through the temperature control channels 16, 17, 19, 20, 21 and 22, wherein a corresponding jet (also referred to as a jet for short) is formed by the temperature control medium flowing through the temperature control channels 21 and 22 by means of the temperature control channels 21 and 22, and the jet is ejected as a whole from the laminated core 1 via the temperature control channels 21 and 22 and is thereby ejected into the environment 23 of the laminated core 1. In Figure 2 , arrows 24 indicate jets which flow out of temperature control channels 21 and 22 and are thereby ejected into environment 23. It can be seen that the respective second flow cross section of the respective temperature control channel 21, 22 is designed to be circular, whereby the respective jets are particularly advantageously formed.

[0040] exist Figure 3 The jet is particularly schematically shown in FIG. 2 and is denoted by reference numeral 25. Figure 3 It can be seen that the jet 25 is sprayed onto the winding head 13, which is thereby wetted with the temperature control medium forming the jet 25. The temperature of the winding head 13 is thereby effectively and efficiently controlled.

[0041] The laminated core element 4 has a fourth axial end face A4 which faces away from the end faces A1 and A2 in the axial direction. Figure 2 It can be seen that the temperature control channels 21 and 22 open into or toward the environment 23 at the axial end face A4 , so that the spray jet 25 emerges in its entirety from the laminated core 1 at the fourth axial end face A4 .

[0042] Depend on Figure 2 It can be seen that the temperature control channels 16 and 17 fluidically connected to the temperature control channel 19 are spaced apart from each other, in particular in the circumferential direction of the laminated core 1. As a result, a flow deflection occurs, within the scope of which the temperature control medium is deflected on its path from the temperature control channels 16 and 17 fluidically connected to the temperature control channel 19 to and into the temperature control channel 19. This flow deflection occurs during a channel merging, within the scope of which two temperature control channels 17 and one temperature control channel 16 merge or combine, thus converging into the temperature control channel 19.

[0043] The first laminated core part 2 has a third axial end face A3 which faces away from the axial end faces A1 and A2 and the axial end face A4 in the axial direction. The fourth laminated core part 5 adjoins the third axial end face A3 of the first laminated core part 2 in the second connecting direction and thus in the axial direction of the laminated core 1.

[0044] For example, it is provided that the laminated core part 5 has, in particular, exactly one fourth temperature control channel 26 for each temperature control channel 16 of the laminated core part 2 and, in particular, exactly one fifth temperature control channel 27 for each temperature control channel 17 of the laminated core part 2. The respective temperature control channel 26 is fluidically connected to the respective temperature control channel 16, and the respective temperature control channel 27 is fluidically connected to the respective temperature control channel 17. Thus, a temperature control medium can be supplied to the temperature control channel 16 via the temperature control channel 26, and a temperature control medium can be supplied to the temperature control channel 17 via the temperature control channel 27. The respective temperature control channels 26, 27 have respective inlets, which extend in the radial direction of the laminated core 1 or obliquely to the radial direction of the laminated core 1. The radial direction of the laminated core 1 is indicated by a double-headed arrow 28. The feature “the corresponding inlet extends in the radial direction of the laminated core 1, which extends in the radial direction of the electric machine” can be understood to mean that the temperature control medium can pass through the corresponding inlet from outside the laminated core 1 and therefore from the environment 23 in the radial direction of the laminated core 1 or in a direction extending obliquely to the radial direction of the laminated core 1 and thus be introduced into the corresponding temperature control channels 26, 27, so that the temperature control medium can be supplied to the temperature control channels of the laminated core 2, 3, 4, 6, 7 and 8 through the central component (laminated core component 5). In other words, the temperature control medium can be introduced into the central component in the radial direction or in a direction extending obliquely to the radial direction and distributed to the temperature control channels of the other laminated core components 2, 3, 4, 6, 7 and 8 through the central component.

[0045] The temperature control channels 21 and 22 of the laminated core component 4 can also be Figure 4 In addition, Figure 4 The teeth 10 and the grooves 11 arranged between the teeth 10 can be seen particularly clearly in FIG. The jet 25 is also Figure 5 Shown in.

[0046] As from Figure 2 and 4 As can be seen in the figure, the corresponding temperature control channel 16 has a flow cross section that extends elongated in the radial direction of the laminated core 1 and through which a temperature control medium can flow, and the corresponding tooth 10 overlaps the flow cross section at least partially outwardly in the radial direction. As a result, the tooth 10 can be particularly well temperature controlled. The corresponding temperature control channel 17 has a corresponding flow cross section that extends elongated in the circumferential direction of the laminated core 1 and through which a temperature control medium can flow, and the corresponding slot 11 overlaps the flow cross section at least partially outwardly in the radial direction of the laminated core 1. As a result, the slot 11 and the first length region of the winding extending in the slot can be particularly advantageously temperature controlled.

[0047] Reference numerals list

[0048] 1 lamination group

[0049] 2. First lamination stack component

[0050] 3. Second lamination stack component

[0051] 4Third lamination stack component

[0052] 5 Fourth lamination stack component

[0053] 6-Lamination Pack Components

[0054] 7 lamination pack components

[0055] 8 lamination components

[0056] 9 double arrows

[0057] 10 teeth

[0058] 11 slots

[0059] 12 Double-pointing arrow

[0060] 13 Winding head

[0061] 14 Arrow

[0062] 15 Arrow

[0063] 16 Temperature control channels

[0064] 17 Temperature control channel

[0065] 18 Arrow

[0066] 19 Temperature control channel

[0067] 20 Temperature control channels

[0068] 21 Temperature control channel

[0069] 22 Temperature control channels

[0070] 23 Environment

[0071] 24 Arrow

[0072] 25 Jet Stream

[0073] 26 Temperature control channels

[0074] 27 Temperature Control Channel

[0075] 28 double direction arrow

[0076] A1 First axial end face

[0077] A2 Second axial end face

[0078] A3 Third axial end face

[0079] A4 Fourth axial end face

Claims

1. A laminated core (1) for an electric machine, comprising at least three laminated core parts (2, 3, 4, 5) arranged one behind the other in an axial direction (9), namely: - a first laminated core component (2), the first laminated core component having at least two first temperature control channels (16, 17), through which a temperature control medium can flow in order to control the temperature of the laminated core (1); - a second lamination component (3) axially adjacent to the first axial end face (A1) of the first lamination component (2), the second lamination component having at least one second temperature control channel (19), the second temperature control channel being fluidically connected to at least the two first temperature control channels (16, 17) and thus capable of being traversed by a temperature control medium at least from the two first temperature control channels (16, 17) and having a first flow cross section through which the temperature control medium can flow; and - a third lamination stack component (4), which is axially adjacent to a second axial end face (A2) of the second lamination stack component (3) and faces away from the first end face (A1) in the axial direction (9), and which has a third temperature control channel (20) which is fluidically connected to the second temperature control channel (19) and can therefore be circulated by a temperature control medium from the second temperature control channel (19), and which has a second flow cross section which is smaller than the first flow cross section.

2. The lamination stack (1) according to claim 1, characterized in that A fourth laminated core component (5) is provided, which is axially adjacent to a third axial end face (A3) of the first laminated core component (2) and faces away from the first end face (A1) and the second end face (A2) in the axial direction (9), the fourth laminated core component having a fourth temperature control channel (26) fluidically connected to one of the first temperature control channels (16, 17) and a fifth temperature control channel (27) fluidically connected to the other of the first temperature control channels (16, 17), the fourth temperature control channel (26) and the fifth temperature control channel (27) each having an inlet extending in a radial direction (28) or obliquely to the radial direction (28), through which a temperature control medium can be introduced from outside the laminated core (1) into the fourth temperature control channel (26) and the fifth temperature control channel (27) in a radial direction (28) or in a direction extending obliquely to the radial direction (28).

3. The lamination stack (1) according to claim 1 or 2, characterized in that: The laminated core components (2, 3, 4, 5) are manufactured individually and independently of one another and are arranged adjacent to one another in the axial direction (9).

4. The laminated core (1) according to any one of the preceding claims, characterized in that The first laminated core component (2) has a plurality of teeth (10) arranged successively in the circumferential direction (12) of the laminated core (1) for carrying at least one winding and a plurality of slots (11) arranged successively in the circumferential direction (12) of the laminated core (1) and arranged between the teeth (10) for passing the winding.

5. The lamination stack (1) according to claim 4, characterized in that The first temperature adjustment channels (16, 17) are multiple channels, wherein: - one of the teeth (10) is assigned a first of the channels and outwardly at least partially overlaps the assigned first channel in a radial direction (28); and One of the grooves (11) is assigned a second channel and at least partially overlaps the assigned second channel outwardly in a radial direction (28).

6. The lamination stack (1) according to claim 5, characterized in that The first channel has a flow cross section which, viewed in the radial direction (28), extends elongated and through which a temperature control medium can flow.

7. The lamination stack (1) according to claim 5 or 6, characterized in that: The second channel has a flow cross section which extends elongated when viewed in the circumferential direction (12) of the laminated core (1) and through which a temperature control medium can flow.

8. An electric machine for a motor vehicle, comprising at least one laminated core (1) according to any one of the preceding claims.

9. The motor according to claim 8, characterized in that The electric machine comprises a stator and a rotor, and the laminated core (1) is a laminated core of the stator.

10. Motor vehicle comprising at least one electric machine according to claim 9.

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