Stator body with axial coolant channels

Abstract

The invention relates to a stator body for a stator of an electric machine, which comprises a base body with a plurality of stator plates, wherein the base body extends from a first outer end face to an opposite second outer end face. The base body comprises at least one first axial coolant channel, which runs in an axial direction through the base body, and at least one second axial coolant channel, which runs in an axial direction through the base body, wherein the second axial coolant channel has a higher radial distance from the central longitudinal axis of the stator body than the first axial coolant channel.

Description

[0001] Stator body with axial coolant channels

[0002] The invention relates to an electrical machine, such as a synchronous machine. In particular, the invention relates to the cooling of a stator of an electrical machine.

[0003] An at least partially electrically powered vehicle comprises an electric machine for driving the vehicle. The electric machine comprises a stator that encloses a rotor of the electric machine. Furthermore, the electric machine typically has a coolant circuit to cool the electric machine, in particular the electrical windings of the stator. The coolant can be guided in hollow coolant channels within the stator body. Furthermore, the coolant can be sprayed onto the winding head on an end face of the stator body using nozzles. This document addresses the technical problem of enabling particularly reliable cooling of the stator of an electric machine.

[0004] The problem is solved by the independent claim. Advantageous embodiments are described, among other things, in the dependent claims. It should be noted that additional features of a patent claim dependent on an independent patent claim can form a separate invention, independent of the combination of all features of the independent patent claim, without the features of the independent patent claim or only in combination with a subset of the features of the independent patent claim, which invention can be made the subject of an independent claim, a divisional application, or a subsequent application. This applies equally to technical teachings described in the description, which can form an invention independent of the features of the independent patent claims.

[0005] According to one aspect, a stator body for a stator of an electrical machine is described. The stator body comprises a base body with a plurality of flat (identically formed) stator laminations. The base body extends in the axial direction (along the central longitudinal axis of the stator body) from a first outer end face to an opposite second outer end face. The stator can have a winding head on each of the two outer end faces (of the stator body).

[0006] The base body comprises at least one first axial coolant channel and at least one second axial coolant channel, each of which extends in the axial direction through the base body. The base body can in particular have N first axial coolant channels and N second axial coolant channels, e.g. (at least or exactly) one first and second coolant channel per stator tooth of the stator body. The individual coolant channels can each be designed to carry coolant, in particular a liquid coolant (such as oil). The individual coolant channels can each be designed as a bore and / or as a recess (in the axial direction through the stator body).

[0007] The base body can comprise a first partial body and a second partial body, each with one or more first and one or more second axial coolant channels, wherein the first and second partial bodies are arranged one behind the other in the axial direction. The two partial bodies can each comprise a portion (e.g., half each) of the stator laminations of the base body. The two partial bodies can be identically designed.

[0008] The base body can comprise a stator component arranged between the first partial body and the second partial body, which is designed to conduct coolant from outside the stator body into the one or more first and second axial coolant channels of the first and second partial bodies. The stator component itself can be designed as a stator lamination or as a set of several stator laminations. A hollow distribution ring can be arranged in the stator component, via which the coolant (in particular a cooling liquid, such as oil) can be conducted to the individual axial coolant channels. This can ensure a central supply of coolant to the stator body in order to enable particularly reliable and efficient cooling.

[0009] The one or more, in particular the N, second axial coolant channels have a greater radial distance from the central longitudinal axis of the stator body than the one or more, in particular the N, first axial coolant channels. The one or more second axial coolant channels can be arranged relatively close (compared to the one or more first axial coolant channels) to the lateral surface of the base body or the stator body. The one or more second axial coolant channels can each be axial coolant channels close to the yoke. On the other hand, the one or more first axial coolant channels can be arranged relatively close (compared to the one or more second axial coolant channels) to the air gap to the rotor of the electric machine. The one or more first axial coolant channels can each be axial coolant channels close to the teeth.

[0010] A stator body is thus described which enables particularly reliable cooling of the stator by using a combination of first and second axial coolant channels (which are arranged at different distances from the central longitudinal axis).

[0011] The individual stator laminations (of the stator body and / or the base body) can each have N stator teeth, which are arranged, in particular evenly distributed, around the central longitudinal axis of the stator body, with N>1, in particular N>4 or N>8 or N>16. Furthermore, the individual stator laminations can each have a stator yoke on which the N stator teeth are arranged, and from which the N stator teeth extend towards the central longitudinal axis of the stator body (and towards the air gap). The stator yoke can be delimited by the outer circumferential surface of the stator body. In particular, the outer circumferential surface of the stator body can be formed by the outer edge of the stator yoke of the plurality of stator laminations (of the stator body and / or the base body). On the inner side (towards the central longitudinal axis), the stator yoke can be delimited by the transition to the N stator teeth.

[0012] A stator slot can be arranged between each of two directly adjacent stator teeth. The stator windings can be arranged in the stator slots around the individual stator teeth.

[0013] The one or more, in particular the N, first axial coolant channels can run at least partially, in particular 40% or more, within one or more of the N stator teeth. In particular, a first axial coolant channel can be arranged in each of the N stator teeth (wherein the cross-sectional area of ​​the individual first axial coolant channels can each be arranged 40% or more within the respective stator tooth). The one or more first axial coolant channels can each have a rod-shaped cross-sectional area (perpendicular to the axial direction) with a length along the radial direction that is significantly (e.g. by a factor of 4 or more) greater than the width in the circumferential direction of the stator body. 40% or more of the length of the cross-sectional area of ​​the individual first axial coolant channels can each be arranged in a stator tooth.

[0014] On the other hand, the one or more, in particular the N, second axial coolant channels can run, in particular completely, within the stator yoke. In this case, the individual second axial coolant channels can each be arranged in radial alignment with a stator slot arranged between two stator teeth. The individual second axial coolant channels can each be arranged between different, directly adjacent, pairs of the N stator teeth (each in radial alignment with the respective stator slot). Thus, a second axial coolant channel can be provided in alignment with the individual stator slots. The individual second axial coolant channels can each have a circular cross-sectional area (perpendicular to the axial direction).Alternatively or additionally, the length (in radial direction) and the width (in circumferential direction) of the cross-sectional area of ​​the individual second axial coolant channels may be substantially equal.

[0015] The outer surface of the base body or the stator body can extend with a specific outer radius around the central longitudinal axis of the stator body. The one or more second axial coolant channels can each be arranged at a distance of 10% or less, in particular 5% or less, of the outer radius from the outer surface. On the other hand, the one or more first axial coolant channels can each be arranged at a distance of 15% or more, in particular 20% or more, of the outer radius from the outer surface. By arranging the first and second axial coolant channels in rings of different sizes (with different radii) around the central longitudinal axis of the stator body, particularly reliable cooling of the stator can be achieved.

[0016] The stator body can have a nozzle stator sheet on at least one end face (typically on both end faces), which comprises at least one nozzle arranged such that the nozzle can be supplied with coolant from the at least one first axial coolant channel of the base body (or is supplied during operation of the stator). The nozzle can be configured to direct a coolant jet onto the stator winding head arranged on the respective end face of the stator body. This allows for efficient and reliable cooling of the winding head.

[0017] The nozzle stator lamination can further comprise a bore for extending the second axial coolant channel of the base body. The nozzle stator lamination can have a bore for each of the second axial coolant channels. The coolant emerging from the individual second axial coolant channels can be used at the respective end face to cool the respective winding head of the stator.

[0018] A nozzle stator sheet can have a plurality of nozzles, which are arranged, in particular evenly distributed, around the longitudinal axis of the stator body. This allows particularly reliable cooling of the stator winding heads. The nozzle stator sheet can, for example, have (exactly) N nozzles, which are fed, in particular in a one-to-one relationship, with coolant from the corresponding N first axial coolant channels. Alternatively, the nozzle stator sheet can have (exactly) N / 2 nozzles, each fed with coolant from two of the N first axial coolant channels. Thus, exactly one nozzle can be provided for each pair of first axial coolant channels.

[0019] The stator body can have (on both end faces) a supply stator sheet, which is arranged between the respective outer end face of the base body and the respective nozzle stator sheet, and which has a connecting line between the at least one first axial coolant channel of the base body and the nozzle of the nozzle stator sheet. The connecting line can be formed as a recess within the supply stator sheet. A supply stator sheet can also be arranged correspondingly on the other outer end face of the base body.

[0020] This allows a supply stator lamination to be arranged directly on an outer face of the base body, followed axially by a nozzle stator lamination. This ensures reliable coolant flow through the stator body.

[0021] The base body can have two first axial coolant channels arranged in or on two different (directly adjacent) stator teeth of the base body or the stator body. A connecting line of a supply stator lamination can be configured to connect the two first axial coolant channels to the same nozzle of a nozzle stator lamination, so that the nozzle of the nozzle stator lamination can be supplied with coolant from both first axial coolant channels (and is supplied during stator operation). This allows for a particularly reliable coolant flow through the stator body and a particularly reliable formation of a coolant jet for cooling a winding head of the stator.

[0022] The individual supply stator laminations can each include a bore for extending the second axial coolant channel of the base body. In particular, a bore can be provided for each second axial coolant channel. This allows for reliable coolant guidance through the stator body.

[0023] The stator body can be formed on the second outer end face of the base body in a corresponding, in particular identical, manner as on the first outer end face of the base body. Consequently, embodiments relating to the first end face of the stator body or the base body can be applied correspondingly to the second end face of the stator body or the base body.

[0024] The individual stator laminations (for the base body, the one or more nozzle stator laminations, and / or the one or more supply line stator laminations) of the stator body can be structurally identical (apart from one or more recesses for the first and second axial coolant channels, for the nozzles, or for the connecting lines). In particular, the individual stator laminations can each have a stator yoke (with a uniform outer diameter) and N stator teeth each. Furthermore, the individual stator laminations can each have a uniform thickness (in the axial direction), e.g., a thickness between 1 mm and 5 mm. This enables particularly cost-efficient production of the stator body.

[0025] According to a further aspect, a stator for an electrical machine is described. The stator comprises a stator body which is designed as described in this document. The stator can further have a first winding head arranged on the first end face of the stator body and / or a second winding head arranged on the second end face of the stator body. The nozzles of the stator body (in particular the nozzles of the one or more nozzle stator laminations) and / or the second axial coolant channels can each be designed to cause coolant jets with coolant onto the respective winding head in order to effect efficient, reliable and targeted cooling of the respective winding head.

[0026] According to a further aspect, an electrical machine, in particular a synchronous machine, with a rotor and with a stator is described, wherein the stator is designed as described in this document.

[0027] The electric machine can be designed to conduct coolant, starting from an outer surface of the stator body of the stator, into one or more first and second axial coolant channels of the stator body of the stator, in particular at a location arranged centrally in the axial direction between the two partial bodies of the stator body. The electric machine can further be configured to collect coolant from the one or more first and second axial coolant channels, which was used to cool a winding head of the stator, on at least one end face of the stator body of the stator. This coolant can be fed back into the one or more first and second axial coolant channels.

[0028] A coolant circuit can thus be provided for efficient and reliable cooling of the stator windings and / or the winding heads of the stator.

[0029] According to a further aspect, a (road) motor vehicle (in particular a passenger car or a truck or a bus or a motorcycle) is described which comprises the electrical machine described in this document.

[0030] It should be noted that the devices and systems described in this document can be used both alone and in combination with other devices and systems described in this document. Furthermore, any aspects of the devices and systems described in this document can be combined in a variety of ways. In particular, the features of the claims can be combined in a variety of ways. Furthermore, features listed in parentheses are to be understood as optional features.

[0031] The invention will be described in more detail below using exemplary embodiments.

[0032] Figure la shows an exemplary electrical machine;

[0033] Figure 1b shows an exemplary winding head on an end face of a stator;

[0034] Figure 2 is an isometric view of an exemplary multi-part stator body; Figure 3a is an isometric view of an exemplary multi-part stator body with near-slot (first) and near-yoke (second) coolant channels; and Figure 3b is an exemplary flow of coolant through a stator body.

[0035] As stated at the outset, this document deals with increasing the cooling reliability of a stator of an electrical machine. In this context, Fig. 1a shows an exemplary electrical machine 100 in a view perpendicular to the shaft 101 of the electrical machine 100. The shaft 101 of the electrical machine 100 can correspond to the longitudinal axis of the stator 110 and / or the rotational axis of the rotor 120 of the electrical machine 100. The shaft 101 runs along the z-axis of the illustrated Cartesian coordinate system.

[0036] The electric machine 100 comprises a stator 110 with a plurality of stator windings 111 arranged at different angular positions around the rotational axis of the rotor 120 and configured to generate an electromagnetic rotating field. The stator 110 is surrounded by a housing 135 of the electric machine 100. The individual stator windings 111 can each be arranged in a stator slot between two directly adjacent stator teeth 113 of the stator 110. An air gap 102 is arranged between the stator 110 and the rotor 120. The electric machine 100 further comprises the rotor 120, which is driven by the rotating field generated by the stator 110. The rotor 120 is fixedly connected to the shaft 101 driven by the electric machine 100 (which is connected to the rotor axis of the rotor 120 or corresponds to the rotor axis of the rotor 120). The rotor 120 includes a rotor body 122.

[0037] The rotor 120 of an electrical machine 100 can have a laminated iron core (e.g., composed of mutually insulated laminations) as the rotor body 122. Similarly, the stator body of the stator 110 can also be composed of individual (mutually electrically insulated) stator laminations (e.g., iron laminations).

[0038] The stator 110 extends along the rotational axis of the rotor 120 or along the longitudinal axis of the stator 110 from a first end face to an opposite second end face. The stator 110 has different magnetic stator teeth 113, which are arranged at different angular positions (evenly distributed) around the rotational axis of the rotor 120. A coil (i.e., one or more turns or windings 111) can be arranged around each of the stator teeth 113, by which a magnetic field is generated. The individual stator teeth 113 can thus form magnetic poles of the stator 110. The turns or windings 111 each form a winding head on the end faces of the stator 110.

[0039] Between each two directly adjacent stator teeth 113 of the stator 110, a stator groove is formed in which the windings 111 are arranged. A stator slot extends along the longitudinal axis (i.e., along the z-axis) from the first end face to the opposite second end face of the stator 110. The windings 111 arranged in a stator slot can be electrically insulated from the (electrically conductive) stator body by means of slot insulation. Fig. 1b illustrates the winding overhang 115 formed by the stator windings 111 at an end face 117 of the stator 110. The winding overhang 115 is typically cooled with a (liquid) coolant 130 (e.g., oil). The coolant 130 can, for example, be sprayed onto the winding overhang 115 using one or more nozzles (not shown).In the stator 110 described in this document, the coolant 130 for cooling the winding head 115 can be efficiently obtained from coolant channels of the stator body 118 of the stator 110.

[0040] Fig. 2 shows an exemplary multi-part stator body 118 of a stator 110. The stator body 118 comprises a first partial body 201 and a second partial body 202, which are arranged one behind the other along the longitudinal axis of the stator body 118. The partial bodies 201, 202 can each be composed of a plurality of (identically formed) stator laminations, e.g., each of 50 or more, or 100 or more stator laminations. Furthermore, the two partial bodies 201, 202 can be structurally identical, so that the two partial bodies 201, 202 each form one half of the base body 201, 202 of the stator body 118.

[0041] The stator body 118 can have one or more hollow coolant channels 205 in the stator yoke and / or in the individual stator teeth 113, each extending in the axial direction, i.e., in the longitudinal direction. Coolant 130 can be conducted through the individual axial coolant channels 205 to cool the stator windings 111.

[0042] A central stator component 203, in particular a central stator lamination or lamination stack, can be arranged between the two partial bodies 201, 202, which rests against the central end faces 216 of the two partial bodies 201, 202. The central stator component 203 can have a stator yoke and stator teeth 113. Furthermore, the central stator component 203 can be configured to conduct coolant 130 from outside the stator body 118 into the axial coolant channels 205 of the two partial bodies 201, 202.

[0043] As initially stated, this document deals with the reliable cooling of the stator 110. The stator body 118 shown in Fig. 2 has an end face stator lamination 210 on each of the outer end faces 116 of the partial bodies 201, 202. In particular, a first end face stator lamination 210 is arranged on the outer end face 116 of the first partial body 201, and a second end face stator lamination 210 is arranged on the outer end face 116 of the second partial body 202. The individual end face (or nozzle) stator laminations 210 can each have nozzles 212 that are supplied with coolant 130 from the individual axial coolant channels 205. The nozzles 212 can be arranged evenly distributed around the central longitudinal axis of the stator 110. The individual nozzles 212 can each cause a coolant jet to be directed onto the winding head 115 of the stator 110.

[0044] During operation of the electrical machine, heat can be generated at the windings 111 of the stator 110, i.e., in the immediate vicinity of the individual stator teeth 113. The heat generated in the windings 111 can be referred to as copper loss (since the windings 111 are typically made of copper). Furthermore, due to the time-varying magnetic field in the stator 110, heat can be generated in the individual stator laminations themselves. These heat losses can be referred to as iron losses (since the stator laminations typically contain iron). The iron losses arise primarily in the area of ​​the stator yoke.

[0045] The stator body 118 shown in Fig. 3a comprises a plurality of first axial coolant channels 205 arranged in or on the individual stator teeth 113 and configured to dissipate heat resulting from copper losses. Furthermore, the stator body 118 shown in Fig. 3a comprises a plurality of second axial coolant channels 315 arranged within the stator yoke and configured to dissipate heat resulting from iron losses.

[0046] The first axial coolant channels 205 are spaced a shorter radial distance from the central longitudinal axis of the stator body 118 than the second axial coolant channels 315. The individual first axial coolant channels 205 can each be arranged (optionally completely) within a stator tooth 113 or at least extend into a stator tooth 113. The individual second axial coolant channels 315 can be arranged in the immediate vicinity of the outer circumferential surface of the stator body 118. Furthermore, the individual second axial coolant channels 315 can each be arranged radially aligned with a stator groove (between two stator teeth 113). Such an arrangement of the axial coolant channels 205, 315 can achieve particularly reliable cooling of the stator 110.

[0047] The stator body 118 shown in Fig. 3a has a supply stator sheet 311 on each of the outer end faces 116 of the two partial bodies 201, 202, wherein the supply stator sheet 311 has connecting lines 305, each of which is designed to conduct coolant 130 from one or more, in particular from two, first axial coolant channels 205 to a respective nozzle 212 of the directly adjacent nozzle stator sheet 310. Between two stator slots, ie in each case in a stator tooth 113, a respective first axial coolant channel 205 can run in the longitudinal direction through a partial body 201, 202. A connecting line 305 can guide the coolant 130 from two directly adjacent first axial coolant channels 205 to (exactly) one nozzle 212 each, wherein the nozzle 212 is arranged in the stator yoke between two stator teeth 113.

[0048] A supply line stator sheet 311 can thus be arranged directly on the outer end face 116 of a partial body 201, 202, and a nozzle stator sheet 310 can be arranged directly on the supply line stator sheet 311. The end face 117 of the stator body 118 can be formed by the nozzle stator sheet 310.

[0049] The supply stator sheet 311 and the nozzle stator sheet 310 can each have bores for the second axial coolant channels 315, wherein the individual bores are each axially aligned with the corresponding second axial coolant channels 315. The second axial coolant channels 315 can thus be extended to the end face 117 of the stator body 118. The coolant 130 from the second axial coolant channels 315 can be used to cool the winding head 115 at the end face 117 of the stator body 118.

[0050] Fig. 3b illustrates the flow of coolant 130 through the stator body 118. In particular, Fig. 3b shows that coolant 130 can be introduced into a distribution ring 321 of the central stator component 203 via an inlet 320. The coolant 130 is supplied to the first and second axial coolant channels 205, 315 of the first partial body 201 and the second partial body 202 via the distribution ring 321. At the outer end faces 116 of the two partial bodies 201, 202, the coolant 130 of the first axial coolant channels 205 is supplied to the individual nozzles 212 in the nozzle stator laminations 310 via the connecting lines 305 of the supply stator laminations 311. The individual nozzles 212 each produce a jet of coolant 130 for cooling the winding overhangs 115. Furthermore, each of the second axial coolant channels 315 causes a jet of coolant 130 to be directed onto the respective end face 117 of the stator body 118.

[0051] This describes efficient heat dissipation of the heat losses occurring in an oil-cooled stator 110. As explained above, the heat losses are caused by copper losses (in the windings 111) and iron losses (in the stator laminations). The stator body 118 described in this document has separate coolant channels 205, 315 for both the copper and iron losses. The coolant channels 205, which are arranged diametrically relatively far inward, primarily serve the purpose of dissipating the copper losses. The coolant channels 315, which are arranged diametrically relatively far outward (in the yoke area), are primarily focused on dissipating the iron losses. Both sets of coolant channels 205, 315 are supplied from a common stator coolant circuit, wherein the distribution and / or forwarding of the coolant 130 into the various channels 305, 315 takes place via centrally arranged distribution stator sheets (of the central stator component 203).To efficiently utilize the coolant 130 at the stator ends 117 to cool the winding heads 115, distribution and spray plates 311, 310 are arranged at the stator ends 117. The spray or nozzle stator plates 310, 311 serve to optimally form the hydraulic jet (spray formation) to provide the winding head cooling.

[0052] The measures described in this document ensure particularly reliable heat dissipation from the stator 110 of an electrical machine 100 in order to prevent premature degradation and / or thermal overload of the electrical machine 100.

[0053] The present invention is not limited to the embodiments shown. In particular, it should be noted that the description and figures are intended only to illustrate the principle of the proposed devices and systems by way of example.

Claims

Claims 1) Stator body (118) for a stator (110) of an electrical machine (100); wherein - the stator body (118) comprises a base body (201, 202) with a plurality of stator laminations; - the base body (201, 202) extends in the axial direction from a first outer end face (116) to an opposite second outer end face (116); - the base body (201, 202) has at least one first axial coolant channel (205) which extends in the axial direction through the base body (201, 202); - the base body (201, 202) has at least one second axial coolant channel (315) which extends in the axial direction through the base body (201, 202); and - the second axial coolant channel (315) has a greater radial distance from a central longitudinal axis of the stator body (118) than the first axial coolant channel (205). 2) Stator body (118) according to claim 1, wherein - the individual stator laminations each have N stator teeth (113) which are arranged, in particular evenly distributed, around the central longitudinal axis of the stator body (118), with N>1, in particular N>4 or N>8 or N>16; - the individual stator laminations each have a stator yoke on which the N stator teeth (113) are arranged and extend from the stator yoke to the central longitudinal axis of the stator body (118); - the first axial coolant channel (205) extends at least partially, in particular 40% or more, within one of the N stator teeth (113); and - the second axial coolant channel (315) runs, in particular completely, within the stator yoke. 3) Stator body (118) according to claim 2, wherein the second axial coolant channel (315) is arranged in radial alignment with a stator groove arranged between two stator teeth (113). 4) Stator body (118) according to one of claims 2 to 3, wherein - the base body (201, 202) has N first axial coolant channels (205) for the corresponding N stator teeth (113); and / or - the base body (201, 202) has N second axial coolant channels (315); wherein the individual second axial coolant channels (315) are each arranged in particular between different, directly adjacent, pairs of the N stator teeth (113). 5) Stator body (118) according to one of the preceding claims, wherein - the base body (201, 202) has an outer surface which extends with a certain outer radius around the central longitudinal axis of the stator body (118); - the second axial coolant channel (315) is arranged at a distance of 10% or less, in particular 5% or less, of the outer radius from the outer surface; and - the first axial coolant channel (205) is arranged at a distance of 15% or more, in particular 20% or more, of the outer radius from the outer surface. 6) Stator body (118) according to one of the preceding claims, wherein - the stator body (118) has on at least one end face (117) a nozzle stator sheet (310) comprising at least one nozzle (212) arranged such that the nozzle (212) can be supplied with coolant (130) from the at least one first axial coolant channel (205) of the base body (201, 202); and - the nozzle stator sheet (310) comprises a bore for extending the second axial coolant channel (315) of the base body (201, 202). 7) Stator body (118) according to claim 6, wherein - the stator body (118) has a supply line stator sheet (311) which is arranged between an outer end face (116) of the base body (201, 202) and the nozzle stator sheet (310), and which has a connecting line (305) between the first axial coolant channel (205) of the base body (201, 202) and the nozzle (212) of the nozzle stator sheet (310); - the connecting line (305) is designed in particular as a recess within the supply line stator sheet (311); and - the supply stator sheet (311) comprises a bore for extending the second axial coolant channel (315) of the base body (201, 202). 8) Stator body (118) according to claim 7, wherein - the base body (201, 202) has two first axial coolant channels (205) arranged in two different stator teeth (113) of the base body (201, 202); and - the connecting line (305) of the supply line stator sheet (311) is designed to connect the two first axial coolant channels (205) with the same nozzle (212) of the nozzle stator sheet (310), so that the nozzle (212) of the nozzle stator sheet (310) is fed with coolant (130) from the two first axial coolant channels (205) can be. 9) Stator body (118) according to one of the preceding claims, wherein - the base body (201, 202) comprises a first partial body (201) and a second partial body (202), each with one or more first axial coolant channels (205) and one or more second axial coolant channels (315), wherein the first partial body (201) and the second partial body (202) are arranged one behind the other in the axial direction; and - the base body (201, 202) comprises a stator component (203) arranged between the first partial body (201) and the second partial body (202), which is designed to guide coolant (130) from outside the stator body (118) into the one or more first and second axial coolant channels (205, 315) of the first and second partial bodies (201, 202). 10) Stator (110) for an electrical machine (100), wherein the stator (110) comprises a stator body (118) formed according to one of the preceding claims. 11) An electric machine (100) comprising a rotor (120) and a stator (110) configured according to claim 10; wherein the electric machine (100) is configured - to guide coolant (130), starting from an outer surface of the stator body (118) of the stator (110), into one or more first and second axial coolant channels (205, 315) of the stator body (118) of the stator (110), in particular at a location (320) arranged centrally in the axial direction between two partial bodies (201, 202) of the stator body (118); and - on at least one end face (117) of the stator body (118) of the stator (110) coolant (130) from the one or more first and second axial coolant channels (205, 315) which was used to cool a winding head (115) of the stator (110).

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