WO2024114080A1 - 一种轴向磁场电机及其定子冷却结构和制作方法 - Google Patents
一种轴向磁场电机及其定子冷却结构和制作方法 Download PDFInfo
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- WO2024114080A1 WO2024114080A1 PCT/CN2023/121989 CN2023121989W WO2024114080A1 WO 2024114080 A1 WO2024114080 A1 WO 2024114080A1 CN 2023121989 W CN2023121989 W CN 2023121989W WO 2024114080 A1 WO2024114080 A1 WO 2024114080A1
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- WIPO (PCT)
- Prior art keywords
- flow channel
- branch
- yokeless
- iron core
- core
- Prior art date
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- 238000001816 cooling Methods 0.000 title claims abstract description 76
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 140
- 239000002184 metal Substances 0.000 claims abstract description 111
- 229910052751 metal Inorganic materials 0.000 claims abstract description 111
- 238000005192 partition Methods 0.000 claims abstract description 69
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 183
- 230000000149 penetrating effect Effects 0.000 claims description 10
- 230000000903 blocking effect Effects 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 6
- 239000003292 glue Substances 0.000 claims description 5
- 238000004382 potting Methods 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims description 4
- 239000002826 coolant Substances 0.000 description 31
- 229910000831 Steel Inorganic materials 0.000 description 15
- 239000010959 steel Substances 0.000 description 15
- 238000010586 diagram Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 13
- 238000004804 winding Methods 0.000 description 9
- 238000007789 sealing Methods 0.000 description 6
- 238000005266 casting Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 239000012809 cooling fluid Substances 0.000 description 4
- 229910000976 Electrical steel Inorganic materials 0.000 description 3
- 230000002411 adverse Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 230000001965 increasing effect Effects 0.000 description 3
- 239000000565 sealant Substances 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 101001121408 Homo sapiens L-amino-acid oxidase Proteins 0.000 description 1
- 101000827703 Homo sapiens Polyphosphoinositide phosphatase Proteins 0.000 description 1
- 102100026388 L-amino-acid oxidase Human genes 0.000 description 1
- 102100023591 Polyphosphoinositide phosphatase Human genes 0.000 description 1
- 101100012902 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) FIG2 gene Proteins 0.000 description 1
- 101100233916 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) KAR5 gene Proteins 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/20—Stationary parts of the magnetic circuit with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2793—Rotors axially facing stators
- H02K1/2795—Rotors axially facing stators the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2798—Rotors axially facing stators the rotor consisting of two or more circumferentially positioned magnets where both axial sides of the stator face a rotor
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K3/00—Details of windings
- H02K3/04—Windings characterised by the conductor shape, form or construction, e.g. with bar conductors
- H02K3/28—Layout of windings or of connections between windings
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/20—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K9/00—Arrangements for cooling or ventilating
- H02K9/19—Arrangements for cooling or ventilating for machines with closed casing and closed-circuit cooling using a liquid cooling medium, e.g. oil
Definitions
- the invention relates to the field of stator cooling, and in particular to an axial magnetic field motor with a yokeless iron core and a stator cooling structure and a manufacturing method thereof.
- Axial magnetic field motors also known as disc motors, have the advantages of small size, high torque density, high power density and high efficiency, and are widely used in electric vehicles, general industry and other fields.
- the motor includes a housing, a stator and a rotor, and the stator and the rotor are arranged inside the housing. During the operation of the motor, heat is generated inside the stator, and for reasons of safety and motor efficiency, the heat needs to be discharged.
- CN216056503U discloses a disc motor stator that is easy to dissipate heat.
- the stator uses cooling paths between the core windings and the radial inner and outer sides of the core windings.
- the cooling paths include an inner circulation channel, an outer circulation channel and a water cooling channel.
- the cooling fluid flows back and forth between the inner circulation and the outer circulation in turn through each water cooling channel.
- the heat generated by the core needs to be transferred to the cooling fluid through the coil, that is, the core is far away from the cooling path, resulting in poor heat dissipation inside the core.
- the cooling path occupies the circumferential space of the coil, reducing the occupancy rate of the winding in the slot.
- each coil is separated by a water cooling channel, which is not conducive to connecting the coils to form a winding.
- the cooling path includes an inner circulation channel, an outer circulation channel and a water cooling channel. It can be seen that the cooling path is complex and casting is difficult.
- the present invention provides an axial magnetic field motor and its stator cooling structure and manufacturing method, which directly wraps the iron core and does not occupy the circumferential space of the coil, improves the coil slot full rate, and reduces the molding difficulty to achieve manufacturability.
- the present invention provides an axial magnetic field motor stator cooling structure, including:
- stator housing comprising an upper metal plate, a middle partition plate and a lower metal plate spliced in the axial direction, the stator housing being provided with a plurality of core mounting holes arranged at intervals in the circumferential direction, each of the core mounting holes sequentially penetrating the upper metal plate, the middle partition plate and the lower metal plate;
- a plurality of yokeless iron cores wherein the yokeless iron cores are installed in the iron core installation holes and have two ends exposed on both sides of the stator housing;
- a plurality of coils wherein the coils are sleeved on the yokeless iron core, and coils are sleeved on both ends of the yokeless iron core exposed on both sides of the stator housing;
- An upper flow channel is provided on the surface where the upper metal plate and the middle partition are spliced, a lower flow channel is provided on the surface where the lower metal plate and the middle partition are spliced, and a middle hole connecting the upper flow channel and the lower flow channel is provided on the middle partition;
- the upper flow channel comprises an upper main flow channel and an upper branch flow channel
- the upper main flow channel is arranged to be connected to the upper branch flow channel at one end and connected to an external water channel at the other end
- the upper branch flow channel is arranged around the yokeless iron core and forms a flow channel gap on the inner side of the yokeless iron core;
- the lower flow channel includes a lower main flow channel and a lower branch flow channel, wherein one end of the lower main flow channel is connected to the lower branch flow channel and the other end is connected to an external water channel, and the lower branch flow channel is arranged around the yokeless iron core and forms a flow channel gap inside the yokeless iron core;
- the middle partition plate is provided with a middle hole, and the middle hole is connected with the upper branch flow channel and the lower branch flow channel on the flow channel notch side.
- the upper branch channel is connected to the lower branch channel through two middle holes at both ends of the channel notch, and the upper main channel is connected to the upper branch channel at the outside of the yokeless iron core; the lower main channel is connected to the lower branch channel at the outside of the yokeless iron core.
- the upper main flow channel includes a water inlet and a water inlet loop, and the water inlet loop surrounds the outer On the side, the water inlet is connected to the water inlet loop and the outer side wall of the upper metal plate, and the upper branch channel is connected to the water inlet loop;
- the lower main flow channel includes a water outlet and a water outlet loop, the water outlet loop surrounds the outer side of the yokeless iron core, the water outlet connects the water outlet loop and the outer side wall of the lower metal plate, and the lower branch flow channel connects the water outlet loop.
- the upper branch flow channel includes a water inlet branch, an upper branch on the outer ring of the core and an upper branch between the cores, the water inlet branch is connected between the water inlet loop and the upper branch on the outer ring of the core, the two ends of the upper branch on the outer ring of the core are respectively connected to the upper branch between the cores, the upper branch between the cores is arranged between two adjacent yokeless cores, and the flow channel gap is formed between the two upper branches between the cores on the inner side of the yokeless core;
- the lower branch channel includes a water outlet branch, a lower branch of the outer ring of the iron core and a lower branch between the iron cores.
- the water outlet branch is connected between the water outlet loop and the lower branch of the outer ring of the iron core. Both ends of the lower branch of the outer ring of the iron core are respectively connected to the lower branch between the iron cores.
- the lower branch between the iron cores is arranged between two adjacent yokeless iron cores, and the flow channel gap is formed between the two lower branches between the iron cores on the inner side of the yokeless iron core.
- it also includes:
- the upper flow channel includes a plurality of upper branch waterways extending in the radial direction, wherein the upper branch waterways are arranged between adjacent yokeless iron cores and have upper ports on the inner side of the yokeless iron cores, and two adjacent upper branch waterways are separated from each other on the inner side of the yokeless iron cores to form a blocking space;
- the lower flow channel includes a plurality of lower branch waterways extending in the radial direction, wherein the lower branch waterways are arranged between adjacent yokeless iron cores and have lower ports on the inner side of the yokeless iron cores, and two adjacent lower branch waterways are separated from each other on the inner side of the yokeless iron cores to form a blocking space;
- the middle partition plate is provided with a middle hole, and the middle hole is connected with the upper port of the upper branch water channel and the lower port of the lower branch water channel on the inner side of the yokeless iron core.
- a flow-breaking seam is provided on the barrier space.
- the upper flow channel further includes a water inlet and a water inlet loop, the water inlet loop surrounds the outer side of the yokeless iron core, the water inlet connects the water inlet loop and the outer side wall of the upper metal plate, and the upper branch water channel is connected to the water inlet loop;
- the lower flow channel also includes a water outlet and a water outlet loop, the water outlet loop surrounds the outside of the yokeless iron core, the water outlet connects the water outlet loop and the outer side wall of the lower metal plate, and the lower branch water channel is connected to the water outlet loop.
- the upper flow channel comprises an upper main flow channel, a first upper branch flow channel and a second upper branch flow channel, the upper main flow channel is connected to the first upper branch flow channel, the second upper branch flow channel is independently arranged, the first upper branch flow channel and the second upper branch flow channel are arranged around the yokeless iron core and form a flow channel gap on the inner side of the yokeless iron core;
- the lower flow channel includes a lower main flow channel, a first lower branch flow channel and a second lower branch flow channel, the lower main flow channel is connected to the first lower branch flow channel, the second lower branch flow channel is independently arranged, the first lower branch flow channel and the second lower branch flow channel are arranged around the yokeless iron core and form a flow channel gap inside the yokeless iron core;
- a middle hole is provided on the middle partition plate, and the middle holes are arranged on both sides of the flow channel notch, the first upper branch channel and the second lower branch channel are connected through the middle hole, the second upper branch channel and the first lower branch channel are connected through the middle hole, and the second upper branch channel and the second lower branch channel are connected through the middle hole.
- the second upper branch runners include a plurality of independent ones
- the first upper branch runners include a plurality of independent ones
- the first upper branch channel, the second lower branch channel, the second upper branch channel, and the first lower branch channel are connected in sequence.
- the first upper branch channel, the second lower branch channel, the second upper branch channel, and the first lower branch channel, which are sequentially connected are partially staggered and extended in the circumferential direction.
- the first upper branch flow channel comprises a first water inlet branch, a first core outer ring upper branch and a first inter-core upper branch
- the first water inlet branch is connected between the upper main flow channel and the first core outer ring upper branch
- the first core outer ring upper branch is connected to two first inter-core upper branches
- the first inter-core upper branch is arranged between two adjacent yokeless cores
- the second upper shunt channel includes a second core outer ring upper branch and a second core-to-core upper branch, the second core outer ring upper branch connects three second core-to-core upper branches, and the second core-to-core upper branches are arranged between two adjacent yokeless cores. Between the cores;
- the first lower flow channel includes a first water outlet branch, a first core outer ring lower branch and a first inter-core lower branch
- the first water outlet branch connects the lower main flow channel and the first core outer ring lower branch
- the first water outlet branch connects the center of the first core outer ring lower branch
- the first core outer ring lower branch connects four first inter-core lower branches
- the first inter-core lower branch is arranged between two adjacent yokeless cores
- the second lower branch channel includes a second core outer ring lower branch and a second inter-core lower branch, the second core outer ring lower branch connects two second inter-core lower branches, and the second inter-core lower branch is arranged between two adjacent yokeless cores.
- the number of the first water inlet branches and the number of the first water outlet branches are two respectively, and a center line connecting the two first water inlet branches is perpendicular to a center line connecting the two first water outlet branches.
- the upper main flow channel comprises a water inlet and a water inlet loop
- the water inlet loop surrounds the outer side of the yokeless iron core
- the water inlet connects the water inlet loop and the outer side wall of the upper metal plate
- the first upper branch flow channel is connected to the water inlet loop
- the lower main flow channel includes a water outlet and a water outlet loop, the water outlet loop surrounds the outer side of the yokeless iron core, the water outlet connects the water outlet loop and the outer side wall of the lower metal plate, and the first lower branch flow channel is connected to the water outlet loop.
- a flow interrupting seam is provided on the flow channel notch.
- the upper metal plate has an upper splicing portion and an upper accommodating portion opposite to each other, and an upper core mounting portion penetrating the upper splicing portion and the upper accommodating portion, and the upper flow channel is arranged on the upper splicing portion;
- the lower metal plate has a lower splicing portion and a lower accommodating portion opposite to each other, and a lower core mounting portion penetrating the lower splicing portion and the lower accommodating portion, and the lower flow channel is arranged on the lower splicing portion;
- a plurality of core middle mounting parts are arranged on the middle partition plate, so that after the middle partition plate is spliced between the upper splicing part and the lower splicing part, the core upper mounting part, the core middle mounting part and the core lower mounting part form core mounting holes correspondingly, and the two coils sleeved on the yokeless core are respectively arranged in the upper accommodating part and the lower accommodating part.
- the upper accommodating portion and the lower accommodating portion are both embedded grooves, and the embedded grooves are filled with potting glue.
- a plurality of slot wedges are respectively arranged on both axial sides of the yokeless iron core, each slot wedge is respectively inserted between two adjacent yokeless iron cores, and the coil is abutted between the slot wedge and the stator housing.
- an insulating heat-conducting member is provided between the yokeless core and the coil;
- an insulating heat-conducting member is provided between the coil and the stator housing.
- the present invention also provides an axial magnetic field motor, which includes the axial magnetic field motor stator cooling structure of the above-mentioned embodiment, and the axial magnetic field motor also includes two rotors, and the two rotors are maintained at the axial sides of the yokeless iron core with air gaps.
- the present invention also provides a method for manufacturing a stator cooling structure of an axial magnetic field motor, comprising the following steps:
- stator housing the stator housing is provided with a plurality of core mounting holes arranged at circumferential intervals, the stator housing comprises an upper metal plate, a middle partition plate and a lower metal plate, the core mounting holes sequentially penetrate the upper metal plate, the middle partition plate and the lower metal plate, the upper metal plate has an upper splicing portion, the upper splicing portion is provided with an upper flow channel, the lower metal plate has a lower splicing portion, the lower splicing portion is provided with a lower flow channel, and the middle partition plate is provided with a plurality of intermediate holes;
- Coils are sleeved on both axial sides of the yokeless iron core, and the coils are maintained on both axial sides of the stator housing.
- the stator housing is maintained in the middle section of the yokeless core, and the two coils sleeved on the yokeless core are maintained on both axial sides of the stator housing, so that the upper flow channel and the lower flow channel arranged in the stator housing can simultaneously perform contact heat exchange with the yokeless core and the coils, effectively improving the cooling effect. Since the two coils sleeved on the yokeless core are maintained on both axial sides of the stator housing, so that the coils on the same side are connected and form windings, compared with the traditional coil arrangement between the core and the stator cooling structure, the increase in the circumferential space design and the defect of low winding occupancy rate in the slot are avoided.
- the stator housing is a split structure, so that the upper flow channel and the lower flow channel can be formed by processing, and then the upper metal plate, the middle partition plate and the lower metal plate can be spliced to achieve manufacturability and reduce casting difficulty. Furthermore, by setting the intermediate hole on the intermediate partition, the cooling medium can circulate between the upper flow channel and the lower flow channel, and the upper flow channel and the lower flow channel are arranged axially along the yokeless iron core, thereby increasing the heat exchange area, improving the fluidity, and thus enhancing the cooling performance.
- FIG1 is a schematic structural diagram of the stator cooling structure of the axial magnetic field motor according to the present invention.
- FIG2 is a front view of the stator housing of the present invention.
- Fig. 3 is a cross-sectional view along the A-A direction in Fig. 2;
- FIG4 is a schematic structural diagram of the middle partition of the present invention.
- FIG5 is a schematic structural diagram of a first embodiment of an upper metal plate according to the present invention.
- FIG6 is a schematic structural diagram of a first embodiment of the lower metal plate of the present invention.
- FIG7 is a schematic diagram of a first embodiment of the combination of the upper flow channel and the lower flow channel of the present invention.
- FIG8 is a schematic structural diagram of a second embodiment of the upper metal plate of the present invention.
- FIG9 is a schematic structural diagram of a second embodiment of the lower metal plate of the present invention.
- FIG10 is a schematic diagram of a second embodiment of the combination of the upper flow channel and the lower flow channel of the present invention.
- FIG11 is a schematic structural diagram of a third embodiment of the upper metal plate of the present invention.
- FIG12 is a schematic structural diagram of a third embodiment of the lower metal plate of the present invention.
- FIG13 is a schematic diagram of a third embodiment of the combination of the upper flow channel and the lower flow channel of the present invention.
- FIG14 is a schematic structural diagram of a third embodiment of the combination of the upper flow channel and the lower flow channel of the present invention.
- FIG15 is an exploded view of the axial magnetic field motor of the present invention.
- FIG16 is a cross-sectional view of the gap along the core mounting hole in the axial magnetic field motor of the present invention.
- FIG17 is a cross-sectional view along the center of the core mounting hole of the axial magnetic field motor of the present invention.
- FIG18 is a schematic structural diagram of another embodiment of the stator housing of the present invention.
- FIG. 19 is a schematic diagram of the eddy current path in the stator according to the present invention.
- the axial magnetic field motor stator cooling structure comprises:
- a stator housing 110 the stator housing 110 comprises an upper metal plate 111, a middle partition plate 112 and a lower metal plate 113 which are spliced in the axial direction, and the stator housing 110 is provided with a plurality of core mounting holes 110a which are arranged at intervals in the circumferential direction, and each of the core mounting holes sequentially penetrates the upper metal plate 111, the middle partition plate 112 and the lower metal plate 113;
- a plurality of yokeless iron cores 120 wherein the yokeless iron cores 120 are installed in the iron core installation hole 110a with both ends exposed at both sides of the stator housing 110;
- a plurality of coils 130 wherein the coils 130 are sleeved on the yokeless core 120 , and the coils 130 are sleeved on both ends of the yokeless core 120 exposed on both sides of the stator housing 110 ;
- An upper flow channel 111a is arranged on the surface where the upper metal plate 111 and the middle partition 112 are spliced
- a lower flow channel 113a is arranged on the surface where the lower metal plate 113 and the middle partition 112 are spliced
- a middle hole 112a connecting the upper flow channel 111a and the lower flow channel 113a is arranged on the middle partition 112.
- the stator housing 110 When the yokeless core 120 is inserted into the core mounting hole 110a, the stator housing 110 is maintained in the middle section of the yokeless core 120, and the two coils 130 sleeved on the yokeless core 120 are maintained on both axial sides of the stator housing 110, so that the upper flow channel 111a and the lower flow channel 113a arranged in the stator housing 110 can simultaneously perform contact heat exchange with the yokeless core 120 and the coils 130, effectively improving the cooling effect.
- stator housing 110 is a split structure, so that the upper flow channel 111a and the lower flow channel 113a can be easily processed, and then the upper metal plate 111, the middle partition 112 and the lower metal plate 113 can be spliced to achieve manufacturability and reduce casting difficulty.
- the cooling medium can circulate between the upper flow channel 111a and the lower flow channel 113a, and the upper flow channel 111a and the lower flow channel 113a are arranged along the axial direction of the yokeless iron core 120, increasing the heat exchange area, improving fluidity, and thus enhancing cooling performance.
- the upper metal plate 111 has a relative upper splicing portion 1112 and an upper accommodating portion 1111, and a plurality of upper core mounting portions 1113 penetrating the upper splicing portion 1112 and the upper accommodating portion 1111;
- the lower metal plate 113 has a relative lower splicing portion 1132 and a lower accommodating portion 1131, and a plurality of lower core mounting portions 1133 penetrating the lower splicing portion 1132 and the lower accommodating portion 1131;
- the middle partition plate 112 is provided with a plurality of middle core mounting portions 1123 and a plurality of middle holes 112a; the middle core mounting portions 1123 are spaced apart from the middle holes 112a.
- the middle partition 112 is spliced between the upper splicing part 1112 and the lower splicing part 1132, the upper core mounting part 1113, the middle core mounting part 1123 and the lower core mounting part 1133 form the core mounting hole 110a correspondingly, and the middle hole 112a is connected to the upper flow channel 111a and the lower flow channel 113a.
- the upper metal plate 111, the middle partition plate 112 and the lower metal plate 113 are generally in the form of sheets, so as to assemble and form the disc-shaped stator housing 110, that is, the axial dimension of the stator housing 100 is small, so as to reflect the characteristic of the small axial dimension of the axial magnetic field motor.
- the middle partition plate 112 is the thinnest and can be made of metal or non-metal material, and the outer contour of the stator housing 110 can be circular or square, etc., and a through hole is opened in the center of the stator housing 110 for setting the rotating shaft 300 and the bearing 400, refer to FIG. 15.
- the upper core mounting portion 1113, the middle core mounting portion 1123 and the lower core mounting portion 1133 have the same shape, which is trapezoidal, and form a trapezoidal core mounting hole 110a correspondingly to adapt to the installation of the trapezoidal yokeless core 120, referring to Figures 2 and 15, wherein the trapezoidal upper bottom of the core mounting hole 110a is set inward, and the trapezoidal lower bottom of the core mounting hole 110a is set outward.
- the upper metal plate 111 is provided with an upper flow channel opening groove 111a0
- the middle partition 112 covers the upper flow channel opening groove 111a0 to form the upper flow channel 111a
- the lower metal plate 113 is provided with a lower flow channel opening groove 113a0
- the middle partition 112 covers the lower flow channel opening groove 113a0 to form the lower flow channel 113a.
- the upper runner opening groove 111a0 is processed on the upper joint portion 1112 exposed to the outside of the upper metal plate 111
- the lower runner opening groove 113a0 is processed on the lower joint portion 1132 exposed to the outside of the lower metal plate 113
- the middle partition plate 112 is spliced between the upper metal plate 111 and the lower metal plate 113 to form the upper runner 111a and the lower runner 113a.
- the middle hole 112a is connected to the upper runner opening groove 111a0 and the lower runner opening groove 113a0 respectively and communicates with the upper runner opening groove 111a0 and the lower runner opening groove 113a0.
- the upper metal plate 111, the middle partition 112 and the lower metal plate 113 can also be formed by stamping to reduce the difficulty of casting, and at the same time facilitate the cleaning of the exposed upper flow channel opening groove 111a0 and the lower flow channel opening groove 113a0, which is equivalent to the traditional built-in water channel method. After the water channel is processed and formed, its inner wall is rough and cannot be cleaned, and it is easy to cause problems such as blockage.
- the middle partition plate 112 is sealed to the upper metal plate 111 and the lower metal plate 113 respectively, and the sealing connection includes setting a sealant, a sealing ring or welding.
- a sealant is provided between the middle partition plate 112 and the upper joint portion 1112 of the upper metal plate 111 to ensure the sealing between the two and prevent leakage of the cooling medium (including cooling water, cooling oil or cooling gas).
- the middle partition plate 112 is a flexible material plate, such as a rubber plate, etc.
- the upper metal plate 111 and the lower metal plate 113 are heat-conducting metal plates to enhance their support and heat exchange capabilities.
- the upper metal plate 111, the middle partition plate 112 and the lower metal plate 113 are arranged along the axial direction of the yokeless iron core 120, the upper accommodating portion 1111 is used to arrange the coil 130, the upper flow channel 111a arranged on the upper splicing portion 1112 can cool the coil 130 in the upper accommodating portion 1111, and similarly, the lower flow channel 113a arranged on the lower splicing portion 1132 cools the coil 130 in the lower accommodating portion 1131, and the upper flow channel 111a and the lower flow channel 113a can cool the yokeless iron core 120 at the same time, rationally utilizing the space and effectively ensuring the cooling capacity of the coil 130 and the yokeless iron core 120.
- the upper flow channel 111a and the lower flow channel 113a are separated by the middle partition 112 and are connected only through the middle hole 112a, so that the cooling medium can fully pass through the upper flow channel 111a and the lower flow channel 113a, thereby improving the cooling effect.
- the axial magnetic field motor stator cooling structure 100 further includes:
- a plurality of slot wedges 140 are respectively provided on both axial sides of the yokeless iron core 120 , each slot wedge 140 is respectively inserted between two adjacent yokeless iron cores 120 , and the coil 130 is abutted between the slot wedge 140 and the stator housing 110 .
- the circumferential sides of the yokeless iron core 120 are respectively arranged in the core slots 121, and the slot wedges 140 are respectively inserted into the core slots 121 of two adjacent yokeless iron cores 120 in the radial direction to fix the coil 130 between the slot wedges 140 and the stator housing 110.
- the upper accommodating portion 1111 and the lower accommodating portion 1131 are both embedded grooves, so that the coil 130 can be embedded in the upper accommodating portion 1111 and the lower accommodating portion 1131, and the coil 130 abuts between the bottom of the embedded groove and the slot wedge 140.
- the yokeless iron core 120 and the slot wedge 140 are respectively substantially flush with the axial side surfaces of the stator housing 110, and there is a gap between the coil 130 and the side wall of the embedded groove, which can be used to fill the potting glue, that is, the upper accommodating portion 1111 and the lower accommodating portion 1131 are filled with potting glue to fix the stator housing 110, the coil 130, the yokeless iron core 120, etc.
- connection part 131 of the coil 130 is located on the radially outer side thereof, and the connection part 131 is located in the gap between the coil 130 and the side wall of the embedded slot, and the connection between the coils 130 on the same side can be carried out in the gap.
- the coils 130 can be sleeved on each of the yokeless cores 120 one by one, and then the connection between the coils 130 can be carried out between the coils 130 and the side wall of the embedded slot, so that the coils 130 can be connected to form a winding.
- the coils 130 on the same side can be connected to form a whole through the connection part 131 first, and then connected to the yokeless core 120 together.
- an insulating heat-conducting member is provided between the yokeless core 120 and the coil 130.
- the insulating heat-conducting member can be a ceramic sheet or insulating paper, so as to ensure the insulation and heat conduction between the two, avoid eddy current loss, and affect the motor operation performance.
- the outer periphery of the yokeless core 120 can be wrapped with insulating paper, and then the coil 130 is arranged outside the insulating paper to achieve insulation between the yokeless core 120 and the coil 130.
- the two axial end faces of the yokeless core 120 are air gap faces, and the insulating paper should avoid being blocked.
- an insulating heat-conducting member may be provided between the coil 130 and the stator housing 110 .
- the insulating heat-conducting member is provided between the coil 130 and the bottom of the embedding groove to achieve insulation between the coil 130 and the stator housing 110 .
- the axial magnetic field motor stator cooling structure of the second embodiment is different from that of the first embodiment in that, referring to FIGS. 4 to 6 , the upper flow channel 111a includes an upper main flow channel 111a1 and an upper branch flow channel 111a2, the upper main flow channel 111a1 is arranged to be connected to the upper branch flow channel 111a2 at one end and to be connected to an external water channel at the other end, the upper branch flow channel 111a2 is arranged around the yokeless core 120 and forms a flow channel notch 1110a on the inner side of the yokeless core 120;
- the lower flow channel 113a includes a lower main flow channel 113a1 and a lower branch flow channel 113a2.
- the lower main flow channel 113a1 is arranged to be connected to the lower branch flow channel 113a2 at one end and to be connected to an external water channel at the other end.
- the lower branch flow channel 113a2 is arranged around the yokeless core 120 and forms a flow channel gap 1110a on the inner side of the yokeless core 120.
- the middle hole 112a is connected to the upper branch flow channel 111a2 and the lower branch flow channel 113a2 on the flow channel notch 1110a side.
- the number of the upper branch channel 111a2 and the lower branch channel 113a2 are both multiple, the upper main channel 111a1 is connected to the external water channel, and the cooling medium introduced from the outside is introduced into the multiple upper branch channels 1111a, and then each upper branch channel 1111a introduces the cooling medium into the lower branch channel 113a2 through the middle hole 112a, and then the cooling medium flows into the lower main channel 113a1, and finally is discharged through the external water channel connected to the lower main channel 113a1.
- the upper flow channel 111a and the lower flow channel 113a are arranged at intervals along the axial direction of the yokeless iron core 120, and the upper branch channel 111a2 and the lower branch channel 113a2 are arranged around the yokeless iron core 120 respectively, so as to increase the heat exchange area and make the cooling medium evenly pass through the upper flow channel 111a and the lower flow channel 113a, thereby improving the cooling effect.
- the upper branch channel 111a2 is connected to the lower branch channel 113a2 through two middle holes 112a at both ends of the channel notch 1110a, and the upper main channel 111a1 is connected to the upper branch channel 111a2 at the outside of the yokeless iron core 120; the lower main channel 113a1 is connected to the lower branch channel 113a2 at the outside of the yokeless iron core 120.
- the upper main channel 111a1 is located on the radial outside of the yokeless iron core 120, and the lower main channel 113a1 is also located on the radial outside of the yokeless iron core 120.
- the upper branch channel 111a2 and the lower branch channel 113a2 are arranged at intervals, and the upper branch channel 111a2 and the lower branch channel 113a2 are respectively arranged around the yokeless iron core 120.
- the channel notch 1110a is located on the radial inside of the yokeless iron core 120, the heat exchange area between the upper branch channel 111a2 and the lower branch channel 113a2 and the yokeless iron core 120 is increased, thereby improving the cooling performance.
- the upper main flow channel 111a1 includes a water inlet 111a11 and a water inlet loop 111a12, the water inlet loop 111a12 surrounds the outer side of the yokeless core 120, the water inlet 111a11 connects the water inlet loop 111a12 and the outer side wall of the upper metal plate 111, and the upper branch flow channel 111a2 connects the water inlet loop 111a12;
- the lower main channel 113a1 includes a water outlet 113a11 and a water outlet loop 113a12.
- the water outlet loop 113a12 surrounds the outer side of the yokeless iron core 120.
- the water outlet 113a11 connects the water outlet loop 113a12 and the outer side wall of the lower metal plate 113.
- the lower branch channel 113a2 connects the water outlet loop 113a12.
- the water inlet 111a11 and the water outlet 113a11 are used to connect to external waterways, including connecting to external water pipes, etc.
- the water inlet 111a11 is used to introduce cooling medium
- the water outlet 113a11 is used to discharge cooling medium.
- the middle partition 112 is spliced between the upper metal plate 111 and the lower metal plate 113
- the water inlet 111a1 and the water outlet 113a1 are arranged opposite to each other, which is convenient for centralized external pipes and management.
- the water inlet loop 111a12 and the water outlet loop 113a12 are loops connected end to end in sequence.
- the upper branch flow channel 111a2 includes a water inlet branch 111a21, an upper branch 111a22 on the outer ring of the core, and an upper branch 111a23 between the cores.
- the water inlet branch 111a21 is connected between the water inlet loop 111a12 and the upper branch 111a22 on the outer ring of the core. Both ends of the upper branch 111a22 on the outer ring of the core are respectively connected to the upper branch 111a23 between the cores.
- the upper branch 111a23 between the cores is arranged between two adjacent yokeless cores 120, and the flow channel gap 1110a is formed between the two upper branches 111a23 between the cores on the inner side of the yokeless core 120.
- the lower branch flow channel 113a2 includes a water outlet branch 113a21, a lower branch 113a22 of the outer ring of the core and a lower branch 113a23 between the cores.
- the water outlet branch 113a21 is connected between the water outlet loop 113a12 and the lower branch 113a22 of the outer ring of the core. Both ends of the lower branch 113a22 of the outer ring of the core are respectively connected to the lower branch 113a23 between the cores.
- the lower branch 113a23 between the cores is arranged between two adjacent yokeless cores 120, and the flow channel gap 1110a is formed between the two lower branches 113a23 between the cores on the inner side of the yokeless core 120.
- each of the yokeless cores 120 can be surrounded by the flow channel and the cooling medium can pass through evenly.
- the flow channel gap 1110a is formed between two adjacent upper branches 111a23 between the cores, and located inside the yokeless core 120. As shown in Fig. 6, the flow channel gap 1110a is formed between two adjacent lower branches 113a23 between the cores, and located inside the yokeless core 120.
- the cooling medium is introduced through the water inlet 111a11, and then flows along the water inlet loop 111a12 and through a plurality of the water inlet branches 111a21 into the connected upper branch 111a22 of the outer ring of the core, and then the cooling medium in the upper branch 111a22 of the outer ring of the core flows into the two upper branches 111a23 between the cores connected thereto, and then flows into the corresponding lower branch 113a23 between the cores through the middle hole 112a, and the cooling medium in the lower branch 113a23 between the cores passes through the lower branch 113a22 of the outer ring of the core in turn until it flows into the water outlet loop 113a21, and is finally collected and discharged from the water outlet 113a11.
- Reasonable design of the cooling flow path not only increases the heat exchange area and improves the fluidity of the cooling medium, but also avoids the design limitations of the cooling path that cause some heat to not be discharged in time or cause a large temperature gradient, thereby causing adverse effects on the stator or failing to enable the motor to achieve satisfactory output capacity.
- the flow channel notch 1110a is provided with a flow interruption seam 1110a1, which penetrates the stator housing 110 in the axial direction and connects the core mounting hole 110a and the inner wall of the stator housing 110, and each core mounting hole 110a is connected to a corresponding flow interruption seam 1110a1, and the flow interruption seam 1110a1 extends radially to block the stator eddy current path 1001 where it is located, refer to FIG19 .
- each of the cores 120 generates a stator eddy current path 1001, and the stator eddy current path 1001 is composed of a plurality of elliptical loop paths arranged from the inside to the outside, and the flow interruption seam 1110a1 refers to a gap arranged radially and penetrating the stator housing 110 in the axial direction, and the gap blocks each elliptical loop path, thereby achieving the effect of reducing eddy current loss.
- a closed ring may be added to the inner wall of the stator housing 110 , and the closed ring may be a closed ring made of metal material, and an insulating member may be added between the stator housing 110 and the closed ring to ensure structural strength and achieve insulation effect.
- the axial magnetic field motor stator cooling structure of the third embodiment is different from that of the second embodiment in that, referring to FIGS. 8 to 10 , the upper flow channel 111a includes a plurality of upper branch waterways 111a3 extending in the radial direction, the upper branch waterways 111a3 are arranged between adjacent yokeless cores 120 and have upper ports 111a31 on the inner side of the yokeless core 120, and two adjacent upper branch waterways 111a3 are separated from each other on the inner side of the yokeless core 120 to form a blocking space 1110b;
- the lower flow channel 113a includes a plurality of lower branch waterways 113a3 extending in the radial direction, the lower branch waterways 113a3 are arranged between adjacent yokeless cores 120 and have lower ports 113a31 on the inner side of the yokeless core 120, and two adjacent lower branch waterways 113a3 are separated from each other on the inner side of the yokeless core 120 to form a blocking space 1110b;
- the middle partition plate 112 is provided with a middle hole 112 a , and the middle hole 112 a connects the upper port 111 a 31 of the upper branch water channel 111 a 3 and the lower port 113 a 31 of the lower branch water channel 113 a 3 on the inner side of the yokeless iron core 120 .
- the middle partition plate 112 When the middle partition plate 112 is spliced between the upper metal plate 111 and the lower metal plate 113, the upper branch water channel 111a3 and the lower branch water channel 113a3 correspond to each other.
- the blocking space 1110b By setting the blocking space 1110b, the corresponding upper branch water channel 111a3 and the lower branch water channel 113a3 are connected through the middle hole 112a.
- the upper port 111a31 and the lower port 113a31 are both located on the radial inner side of the yokeless iron core 120, ensuring the heat exchange area and improving the cooling performance.
- the upper flow channel 111a further includes a water inlet 111a11 and a water inlet loop 111a12, the water inlet loop 111a12 surrounds the outer side of the yokeless core 120, the water inlet 111a11 connects the water inlet loop 111a12 and the outer side wall of the upper metal plate 111, and the upper branch waterway 111a3 connects the water inlet loop 111a12;
- the lower flow channel 113a also includes a water outlet 113a11 and a water outlet loop 113a12.
- the water outlet loop 113a12 surrounds the outer side of the yokeless iron core 120.
- the water outlet 113a11 connects the water outlet loop 113a12 and the outer side wall of the lower metal plate 113.
- the lower branch water channel 113a3 is connected to the water outlet loop 113a12.
- the cooling medium is introduced through the water inlet 111a11, and then flows along the water inlet loop 111a12 and through the plurality of the upper branches 111a3 between the cores.
- the cooling medium in the upper branches 111a3 between the cores flows through the middle hole 112a into the lower branch 113a3 between the cores, and then flows into the water outlet loop 113a12, and finally The heat is collected and discharged from the water outlet 113a11.
- Reasonable design of the cooling flow path not only increases the heat exchange area and improves the fluidity of the cooling medium, but also avoids the design limitations of the cooling path that cause some heat to not be discharged in time or cause a large temperature gradient, thereby causing adverse effects on the stator or failing to enable the motor to achieve satisfactory output capacity.
- a flow interrupting slit 1110a1 may also be provided on the blocking space 1110b.
- the specific contents may refer to the flow interrupting slit 1110a1 of the second embodiment, which will not be described in detail here.
- the axial magnetic field motor stator cooling structure of the fourth embodiment is different from that of the second embodiment in that, with reference to FIGS. 11 to 14 , the upper flow channel 111a includes an upper main flow channel 111a1, a first upper branch flow channel 111a4 and a second upper branch flow channel 111a5, the upper main flow channel 111a1 is connected to the first upper branch flow channel 111a4, the second upper branch flow channel 111a5 is independently arranged, the first upper branch flow channel 111a4 and the second upper branch flow channel 111a5 are arranged around the yokeless core 120 and form a flow channel gap 1110a on the inner side of the yokeless core 120;
- the lower flow channel 113a includes a lower main flow channel 113a1, a first lower branch flow channel 113a4 and a second lower branch flow channel 113a5.
- the lower main flow channel 113a1 is connected to the first lower branch flow channel 113a4, and the second lower branch flow channel 113a5 is independently arranged.
- the first lower branch flow channel 113a4 and the second lower branch flow channel 113a5 are arranged around the yokeless core 120 and form a flow channel gap 1110a on the inner side of the yokeless core 120.
- the middle partition plate 112 is provided with a middle hole 112a, and the middle hole 112a is arranged on both sides of the flow channel gap 1110a, the first upper branch channel 111a4 and the second lower branch channel 113a5 are connected through the middle hole 112a, the second upper branch channel 111a5 and the first lower branch channel 113a4 are connected through the middle hole 112a, and the second upper branch channel 111a5 and the second lower branch channel 113a5 are connected through the middle hole 112a.
- the upper main channel 111a1 is used to guide the cooling medium to the first upper branch channel 111a4 connected to it, and then the first upper branch channel 111a4 guides the cooling medium to the second lower branch channel 113a5 through the middle hole 112a, the second lower branch channel 113a5 guides the cooling medium to the second upper branch channel 111a5 through the middle hole 112a, the second upper branch channel 111a5 guides the cooling medium to the first lower branch channel 113a4 through the middle hole 112a, and finally the cooling medium is discharged through the lower main channel 113a1.
- first upper runner 111a4, the second lower runner 113a5, the second upper runner 111a5, and the first lower runner 113a4 are connected in sequence. And when the middle partition 112 is spliced between the upper metal plate 111 and the lower metal plate 113, the first upper runner 111a4, the second lower runner 113a5, the second upper runner 111a5, and the first lower runner 113a4 that are connected in sequence are partially staggered and extended in the circumferential direction, ensuring that water channels are arranged around each of the yokeless iron cores 120 to ensure the cooling effect.
- the second upper flow channels 111a5 include multiple independent channels, and the first upper flow channels 111a4 include multiple independent channels.
- the second lower flow channels 113a5 include multiple independent channels, and the first lower flow channels 113a4 include multiple independent channels.
- first upper branch channels 111a4 which are respectively connected to the two ends of the upper main channel 111a1, and there are four second lower branch channels 113a5.
- Each of the first upper branch channels 111a4 corresponds to two second lower branch channels 113a5, so that the two sides of the first upper branch channel 111a4 are connected to the second upper branch channel 111a5 through a second lower branch channel 113a5.
- the first upper branch flow channel 111a4 includes a first water inlet branch 111a41, a first core outer ring upper branch 111a42 and a first inter-core upper branch 111a43, the first water inlet branch 111a41 connects the upper main flow channel 111a1 and the first core outer ring upper branch 111a42, the first core outer ring upper branch 111a42 connects two first inter-core upper branches 111a43, and the first inter-core upper branch 111a43 is disposed between two adjacent unyoke cores 120;
- the second upper branch channel 111a5 includes a second core outer ring upper branch 111a52 and a second inter-core upper branch 111a53, the second core outer ring upper branch 111a52 connects three second inter-core upper branches 111a53, and the second inter-core upper branch 111a53 is arranged between two adjacent yokeless cores 120;
- the first lower flow channel 113a4 includes a first water outlet branch 113a41, a first core outer ring lower branch 113a42 and a first inter-core lower branch 113a43, wherein the first water outlet branch 113a41 connects the lower main flow channel 113a1 and the first core outer ring lower branch 113a42, the first water outlet branch 113a41 connects the center of the first core outer ring lower branch 113a42, the first core outer ring lower branch 113a42 connects four first inter-core lower branches 113a43, and the first inter-core lower branch 113a43 is arranged between two adjacent yokeless cores 120;
- the second lower branch channel 113a5 includes a second core outer ring lower branch 113a52 and a second inter-core lower branch 113a53, wherein the second core outer ring lower branch 113a52 connects two second inter-core lower branches 113a53, and the second inter-core lower branch 113a53 is arranged between two adjacent yokeless cores 120.
- the upper main flow channel 111a1 includes a water inlet 111a11 and a water inlet loop 111a12, the water inlet loop 111a12 surrounds the outer side of the yokeless core 120, the water inlet 111a11 connects the water inlet loop 111a12 and the outer side wall of the upper metal plate 111, and the first upper branch flow channel 111a4 connects the water inlet loop 111a12;
- the lower main channel 113a1 includes a water outlet 113a11 and a water outlet loop 113a12.
- the water outlet loop 113a12 surrounds the outer side of the yokeless iron core 120.
- the water outlet 113a11 connects the water outlet loop 113a12 and the outer side wall of the lower metal plate 113.
- the first lower branch channel 113a4 is connected to the water outlet loop 113a12.
- the water inlet loop 111a12 and the water outlet loop 113a12 are semi-circular loops, and the curvature thereof is approximately 90°.
- the water inlet loop 111a12 and the water outlet loop 113a12 are staggered in the circumferential direction, wherein the water outlet loop 113a12 deviates 90° relative to the water inlet loop 111a12, so that the center line connecting the two first water inlet branches 111a41 is perpendicular to the center line connecting the two first water outlet branches 113a41.
- the cooling medium introduced by the first water inlet branch 111a41 is divided into two paths, and the path angle of each path on the stator housing 110 is 90°, which can make the cooling medium pass evenly and improve the cooling effect.
- the cooling medium is introduced through the water inlet 111a11, then flows along the water inlet loop 111a12 and through the two first water inlet branches 111a41 into the first upper branch channel 111a4 connected thereto, and then the first upper branch channel 111a4 leads the cooling medium to the second lower branch channel 113a5 through the middle hole 112a, and the second lower branch channel 113a5 leads the cooling medium to the second upper branch channel 111a5 through the middle hole 112a, and the second upper branch channel 111a5 leads the cooling medium to the first lower branch channel 113a4 through the middle hole 112a, and finally the cooling medium is discharged through the lower main channel 113a1.
- Reasonable design of the cooling channel path not only increases the heat exchange area and improves the fluidity of the cooling medium, but also avoids the design limitations of the cooling path that cause some heat to not be discharged in time or cause a large temperature gradient, thereby causing adverse effects on the stator or failing to enable the motor to achieve satisfactory output capacity.
- the axial magnetic field motor includes an axial magnetic field motor stator cooling structure 100 of any one of the first to fourth embodiments, and the axial magnetic field motor also includes two rotors 200, and the two rotors 200 are maintained on both axial sides of the yokeless iron core 120 with an air gap.
- the beneficial effects of the axial magnetic field motor refer to the axial magnetic field motor stator cooling structure 100 of the above embodiment.
- the axial magnetic field motor also includes a rotating shaft 300 and at least one bearing 400.
- the rotating shaft 300 passes through the center of the stator housing 110.
- the bearing 400 is arranged between the rotating shaft 300 and the stator housing 110.
- the rotor 200 is fixed on the rotating shaft 300, and the rotor 200 and the stator 100 are maintained with an air gap.
- the rotor 200 includes a rotor disk 210 and a plurality of magnetic steels 220.
- the plurality of magnetic steels 220 are arranged on the rotor disk 210 at circumferential intervals, and the magnetic steels 220 are maintained in an air gap with the yokeless core 120.
- the magnetic steels 220 When the magnetic steels 220 are arranged on the rotor disk 210, the magnetic steels 220 slightly protrude from the surface of the rotor disk 210 to cooperate with the core 130 in an air gap.
- the rotor 200 further includes a plurality of pressure plates 230.
- a pressure plate 230 is disposed between two adjacent magnetic steels 220.
- the pressure plate 230 is fixed to the magnetic steel receiving groove by fasteners and is adapted to the circumferential side surface of the magnetic steel 220 by an inclined surface.
- the magnetic steel 220 is matched to perform axial and circumferential positioning.
- the magnetic steel 220 is formed by stacking a plurality of silicon steel sheets in a radial direction, and a cut-off surface is formed between two adjacent silicon steel sheets.
- the cut-off surface can block the eddy current path of the magnetic steel, thereby achieving the effect of suppressing eddy current loss.
- the magnetic steel 220 is trapezoidal, and the number thereof is consistent with the number of the yokeless iron core 120.
- the upper bottom of the trapezoid of the magnetic steel 220 is arranged inward, and the lower bottom of the trapezoid of the magnetic steel 220 is arranged outward. That is, the width of the plurality of silicon steel sheets 221 constituting the magnetic steel 220 increases from the inside to the outside in the radial direction.
- the number of the stator 100 is one
- the number of the rotor 200 is two
- the two rotors 200 are held at both axial sides of the stator 100 with air gaps to form an axial magnetic field motor with a single stator and two rotors.
- an axial magnetic field motor with a single stator and a single rotor, or a double stator and a single rotor can be obtained according to the different numbers.
- the manufacturing method of the axial magnetic field motor stator cooling structure is used to manufacture the axial magnetic field motor stator cooling structure 100 of any one of the first to third embodiments, and the method comprises the following steps:
- a stator housing 110 is provided, wherein the stator housing 110 is provided with a plurality of core mounting holes 110a spaced apart in the circumferential direction, the stator housing 110 comprises an upper metal plate 111, a middle partition plate 112 and a lower metal plate 113, the core mounting holes 110a sequentially penetrate the upper metal plate 111, the middle partition plate 112 and the lower metal plate 113, the upper metal plate 111 has an upper splicing portion 1112, an upper flow channel 111a is provided on the upper splicing portion 1112, the lower metal plate 113 has a lower splicing portion 1132, a lower flow channel 113a is provided on the lower splicing portion 1132, and a plurality of intermediate holes 112a are provided on the middle partition plate 112;
- the coils 130 are sleeved on both axial sides of the yokeless core 120 , and the coils 130 are maintained on both axial sides of the stator housing 110 .
- the shapes of the upper flow channel 111a and the lower flow channel 113a refer to the first to third embodiments and are not described here.
- the stator housing 110 is a split structure, so that the upper flow channel 111a and the lower flow channel 113a can be formed by processing, and then the upper metal plate 111, the middle partition 112 and the lower metal plate 113 can be spliced to achieve manufacturability and reduce casting difficulty. At the same time, it is convenient to clean the upper flow channel 111a exposed on the upper splicing part 1112 and the lower flow channel 113a exposed on the lower splicing part 1132.
- step b the middle partition plate 112 is sealed and connected between the upper metal plate 111 and the lower metal plate 113 to increase the sealing performance.
- the sealing connection includes setting a sealant, a sealing ring or welding.
- the upper metal plate 111 is penetrated by an upper core mounting portion 1113
- the lower metal plate 113 is penetrated by an lower core mounting portion 1133
- the middle partition is penetrated by an iron core middle mounting portion 1123. Furthermore, in step b, the upper core mounting portion 1113, the iron core middle mounting portion 1123 and the iron core lower mounting portion 1133 form an iron core mounting hole 110a correspondingly.
- step d the method further comprises:
- a slot wedge 140 is inserted between two adjacent yokeless cores 120 , so that the coil 130 abuts between the slot wedge 140 and the stator housing 110 .
- the upper metal plate 111 is provided with an upper accommodating portion 1111
- the lower metal plate 113 is provided with a lower accommodating portion 1131.
- the upper accommodating portion 1111 and the lower accommodating portion 1131 in which the coil 130 is embedded are filled with potting glue to fix the stator housing 110, the coil 130, the yokeless iron core 120, etc.
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Abstract
本发明提供了一种轴向磁场电机定子及其冷却结构和制造方法,冷却结构包括定子机壳,定子机壳包括沿轴向拼接的上金属板、中间隔板和下金属板,定子机壳上设置有若干个周向间隔设置的铁芯安装孔,每个铁芯安装孔依次贯穿上金属板、中间隔板和下金属板;无轭铁芯安装在铁芯安装孔内并使两端暴露在定子机壳两侧;线圈套设在无轭铁芯上,无轭铁芯暴露在定子机壳两侧的两端上均套设有线圈;上金属板与中间隔板拼接的面上设置有上流道,下金属板与中间隔板拼接的面上设置有下流道,中间隔板上设置有连通上流道和下流道的中间孔;不占用线圈圆周空间,提高线圈槽满率,同时降低成型难度,实现可制造性。
Description
本发明涉及定子冷却领域,尤其涉及一种无轭铁芯的轴向磁场电机及其定子冷却结构和制作方法。
轴向磁场电机又称盘式电机,具有体积小、高转矩密度、高功率密度和高效率等优点,被广泛应用于电动汽车、通用工业等领域。电机包括机壳、定子和转子,定子和转子布置于机壳内部。电机在运行过程中,定子内部会产生热量,出于安全以及电机工作效率的原因,需要排出热量。
目前是利用冷却流体通过定子,来排出热量,但由于空间及绝缘的问题,一些非绝缘冷却流体只能通过设计好的冷却路径通过定子,例如CN216056503U公开的一种易于散热的盘式电机定子,其利用在铁芯绕组之间,以及铁芯绕组的径向内外侧设置冷却路径,冷却路径包括内环流通道、外环流通道和水冷通道,冷却流体通过各水冷通道依次的在内环流通和外环流通之间来回流动,虽然能够实现冷却效果,但存在以下缺陷:
第一,铁芯产生的热量需要通过线圈传递给冷却流体,即铁芯距离冷却路径较远,使得铁芯内部散热不良。第二,冷却路径占用线圈圆周空间,降低了槽内绕组的占用率。第三,每个线圈被水冷通道隔开,不利于线圈连接形成绕组。第四,冷却路径包括内环流通道、外环流通道和水冷通道,可见冷却路径复杂,铸造难度较大。
发明内容
为了解决上述问题,本发明提供了一种直接包裹铁芯,且不占用线圈圆周空间,提高线圈槽满率的轴向磁场电机及其定子冷却结构和制作方法,同时降低成型难度,实现可制造性。依据本发明的一个目的,本发明提供了一种轴向磁场电机定子冷却结构,包括:
一定子机壳,所述定子机壳包括沿轴向拼接的上金属板、中间隔板和下金属板,所述定子机壳上设置有若干个周向间隔设置的铁芯安装孔,每个所述铁芯安装孔依次贯穿所述上金属板、所述中间隔板和所述下金属板;
若干个无轭铁芯,所述无轭铁芯安装在所述铁芯安装孔内并使两端暴露在所述定子机壳两侧;
若干个线圈,所述线圈套设在所述无轭铁芯上,所述无轭铁芯暴露在所述定子机壳两侧的两端上均套设有线圈;
所述上金属板与所述中间隔板拼接的面上设置有上流道,所述下金属板与所述中间隔板拼接的面上设置有下流道,所述中间隔板上设置有连通所述上流道和所述下流道的中间孔;
优选地,所述上流道包括上主流道和上分流道,所述上主流道布置成一端与上分流道相连通,另一端与外界水道连通,所述上分流道环绕所述无轭铁芯布置并在所述无轭铁芯内侧形成流道缺口;
所述下流道包括下主流道和下分流道,所述下主流道布置成一端与下分流道相连通,另一端与外界水道连通,所述下分流道环绕所述无轭铁芯布置并在所述无轭铁芯内侧形成流道缺口;
所述中间隔板上设置有中间孔,所述中间孔在所述流道缺口侧连通所述上分流道和所述下分流道。
优选地,所述上分流道在所述流道缺口的两端分别通过两个中间孔与所述下分流道连通,所述上主流道与所述上分流道在所述无轭铁芯外侧处连通;所述下主流道与所述下分流道,在所述无轭铁芯外侧处连通。
优选地,所述上主流道包括进水口和进水环路,所述进水环路围绕在所述无轭铁芯的外
侧,所述进水口连接所述进水环路和所述上金属板的外侧壁,所述上分流道连接进水环路;
所述下主流道包括出水口和出水环路,所述出水环路围绕在所述无轭铁芯的外侧,所述出水口连接所述出水环路和下金属板的外侧壁,所述下分流道连接出水环路。
优选地,所述上分流道包括进水支路、铁芯外圈上支路和铁芯间上支路,所述进水支路连接于所述进水环路和所述铁芯外圈上支路之间,所述铁芯外圈上支路的两端分别连接所述铁芯间上支路,所述铁芯间上支路设置于相邻的两个所述无轭铁芯之间,并在所述无轭铁芯内侧的两个所述铁芯间上支路之间形成所述流道缺口;
所述下分流道包括出水支路、铁芯外圈下支路和铁芯间下支路,所述出水支路连接于所述出水环路和所述铁芯外圈下支路之间,所述铁芯外圈下支路两端分别连接所述铁芯间下支路,所述铁芯间下支路设置于相邻的两个所述无轭铁芯之间,并在所述无轭铁芯内侧的两个所述铁芯间下支路之间形成所述流道缺口。
优选地,还包括:
所述上流道包括若干个沿径向延伸的上支水路,所述上支水路布置在相邻无轭铁芯之间并在无轭铁芯内侧留有上端口,相邻两条上支水路在无轭铁芯内侧彼此分离形成阻隔空间;
所述下流道包括若干个沿径向延伸的下支水路,所述下支水路布置在相邻无轭铁芯之间并在无轭铁芯内侧留有下端口,相邻两条下支水路在无轭铁芯内侧彼此分离形成阻隔空间;
所述中间隔板上设置有中间孔,所述中间孔在无轭铁芯内侧连通所述上支水路的上端口和所述下支水路的下端口。
优选地,所述阻隔空间上设置有断流缝。
优选地,所述上流道还包括进水口和进水环路,所述进水环路围绕在所述无轭铁芯的外侧,所述进水口连接所述进水环路和所述上金属板的外侧壁,所述上支水路连接进水环路;
所述下流道还包括出水口和出水环路,所述出水环路围绕在所述无轭铁芯的外侧,所述出水口连接所述出水环路和下金属板的外侧壁,所述下支水路连接出水环路。
优选地,所述上流道包括上主流道、第一上分流道和第二上分流道,所述上主流道与第一上分流道连通,所述第二上分流道独立设置,所述第一上分流道和第二上分流道环绕所述无轭铁芯布置并在所述无轭铁芯内侧形成流道缺口;
所述下流道包括下主流道、第一下分流道和第二下分流道,所述下主流道与第一下分流道连通,所述第二下分流道独立设置,所述第一下分流道和第二下分流道环绕所述无轭铁芯布置并在所述无轭铁芯内侧形成流道缺口;
所述中间隔板上设置有中间孔,所述中间孔布置在所述流道缺口两侧,所述第一上分流道和第二下分流道通过中间孔连通,所述第二上分流道和第一下分流道通过中间孔连通,所述第二上分流道和第二下分流道通过中间孔连通。
优选地,所述第二上分流道包括彼此独立的多个,所述第一上分流道包括彼此独立的多个。
优选地,所述第一上分流道、所述第二下分流道、所述第二上分流道、所述第一下分流道依次连通。
优选地,依次相连通的所述第一上分流道、所述第二下分流道、所述第二上分流道、所述第一下分流道在周向方向上依次部分错开并延伸。
优选地,所述第一上分流道包括第一进水支路、第一铁芯外圈上支路和第一铁芯间上支路,所述第一进水支路连接所述上主流道和所述第一铁芯外圈上支路之间,所述第一铁芯外圈上支路连接两个所述第一铁芯间上支路,第一铁芯间上支路设置于相邻的两个所述无轭铁芯之间;
所述第二上分流道包括第二铁芯外圈上支路和第二铁芯间上支路,所述第二铁芯外圈上支路连接三个所述第二铁芯间上支路,所述第二铁芯间上支路设置于相邻的两个所述无轭铁
芯之间;
所述第一下分流道包括第一出水支路、第一铁芯外圈下支路和第一铁芯间下支路,所述第一出水支路连接所述下主流道和所述第一铁芯外圈下支路,所述第一出水支路连接所述第一铁芯外圈下支路中心,所述第一铁芯外圈下支路连接四个所述第一铁芯间下支路,所述第一铁芯间下支路设置于相邻的两个所述无轭铁芯之间;
所述第二下分流道包括第二铁芯外圈下支路和第二铁芯间下支路,所述第二铁芯外圈下支路连接两个所述第二铁芯间下支路,所述第二铁芯间下支路设置于相邻的两个所述无轭铁芯之间。
优选地,所述第一进水支路和所述第一出水支路的数量分别为两个,并且两个所述第一进水支路的中心连线与两个所述第一出水支路的中心连线相垂直。
优选地,所述上主流道包括进水口和进水环路,所述进水环路围绕在所述无轭铁芯的外侧,所述进水口连接所述进水环路和所述上金属板的外侧壁,所述第一上分流道连接进水环路;
所述下主流道包括出水口和出水环路,所述出水环路围绕在所述无轭铁芯的外侧,所述出水口连接所述出水环路和下金属板的外侧壁,所述第一下分流道连接出水环路。
优选地,所述流道缺口上设置有断流缝。
优选地,所述上金属板具有相对的上拼接部和上容置部,以及贯穿所述上拼接部和所述上容置部的铁芯上安装部,所述上流道设置于所述上拼接部上;
所述下金属板具有相对的下拼接部和下容置部,以及贯穿所述下拼接部和所述下容置部的铁芯下安装部,所述下流道设置于所述下拼接部上;
所述中间隔板上设置有若干个所述铁芯中安装部,以在所述中间隔板拼接于所述上拼接部和所述下拼接部之间后,所述铁芯上安装部、所述铁芯中安装部和所述铁芯下安装部对应形成铁芯安装孔,以及套设在所述无轭铁芯上的两个所述线圈,分别设置在所述上容置部和所述下容置部内。
优选地,所述上容置部和所述下容置部均为嵌槽,所述嵌槽内填充有灌封胶。
优选地,其特征在于,还包括:
若干个槽楔,所述无轭铁芯的轴向两侧分别设置有所述槽楔,每一所述槽楔分别插接于相邻的两个所述无轭铁芯之间,所述线圈抵接于所述槽楔和所述定子机壳之间。
优选地,所述无轭铁芯与所述线圈之间设置有绝缘导热件;
和/或,所述线圈与所述定子机壳之间设置有绝缘导热件。
依据本发明的另一个目的,本发明还提供了一种轴向磁场电机,所述轴向磁场电机包括上述实施例的轴向磁场电机定子冷却结构,所述轴向磁场电机还包括两转子,两所述转子气隙地保持于所述无轭铁芯的轴向两侧。
依据本发明的另一个目的,本发明还提供了一种轴向磁场电机定子冷却结构的制造方法,包括以下步骤:
a、提供一定子机壳,所述定子机壳上设置有若干个周向间隔设置的铁芯安装孔,所述定子机壳包括上金属板、中间隔板和下金属板,所述铁芯安装孔依次贯穿所述上金属板、中间隔板和所述下金属板,所述上金属板具有上拼接部,所述上拼接部上设置有上流道,所述下金属板具有下拼接部,所述下拼接部上设置有下流道,所述中间隔板上设置有若干个中间孔;
b、将所述中间隔板拼接于所述上拼接部和所述下拼接部之间,以使所述中间孔连通所述上流道和所述下流道;
c、在所述铁芯安装孔内***无轭铁芯;
d、在所述无轭铁芯的轴向两侧套设线圈,并使所述线圈保持于所述定子机壳的轴向两侧。
与现有技术相比,本技术方案具有以下优点:
所述定子机壳保持于所述无轭铁芯的中段,而套设于所述无轭铁芯的两个所述线圈保持在所述定子机壳的轴向两侧,这样能够使设置在所述定子机壳内的所述上流道和所述下流道,同时与所述无轭铁芯和所述线圈进行接触换热,有效提升冷却效果。由于套设于所述无轭铁芯的两个所述线圈保持在所述定子机壳的轴向两侧,以便于同一侧的所述线圈连接并形成绕组,相对于传统线圈布置于铁芯和定子冷却结构之间来说,避免圆周空间设计增大,以及避免槽内绕组占用率低的缺陷问题。所述定子机壳为分体结构,以便于加工形成所述上流道和所述下流道,之后将所述上金属板、所述中间隔板和所述下金属板拼接即可,实现可制造性,降低铸造难度。并且通过在所述中间隔板上设置所述中间孔,能够使所述冷却介质在所述上流道和所述下流道之间循环,并且所述上流道和所述下流道沿所述无轭铁芯轴向排列,增加换热面积,提升流动性,进而增强冷却性能。
图1为本发明所述轴向磁场电机定子冷却结构的结构示意图;
图2为本发明所述定子机壳的主视图;
图3为图2中沿A-A向剖视图;
图4为本发明所述中间隔板的结构示意图;
图5为本发明所述上金属板第一实施例的结构示意图;
图6为本发明所述下金属板第一实施例的结构示意图;
图7为本发明所述上流道和所述下流道组合的第一实施例原理图;
图8为本发明所述上金属板第二实施例的结构示意图;
图9为本发明所述下金属板第二实施例的结构示意图;
图10为本发明所述上流道和所述下流道组合的第二实施例原理图;
图11为本发明所述上金属板第三实施例的结构示意图;
图12为本发明所述下金属板第三实施例的结构示意图;
图13为本发明所述上流道和所述下流道组合的第三实施例原理图;
图14为本发明所述上流道和所述下流道组合的第三实施例结构示意图;
图15为本发明所述轴向磁场电机的分解图;
图16为本发明所述轴向磁场电机中沿铁芯安装孔间隙的剖面图;
图17为本发明所述轴向磁场电机中沿铁芯安装孔中心的剖面图;
图18为本发明所述定子机壳另一实施例的结构示意图;
图19为本发明所述定子中涡流路径的示意图。
以下描述用于揭露本发明以使本领域技术人员能够实现本发明。以下描述中的优选实施例只作为举例,本领域技术人员可以想到其他显而易见的变型。在以下描述中界定的本发明的基本原理可以应用于其他实施方案、变形方案、改进方案、等同方案以及没有背离本发明的精神和范围的其他技术方案。
第一实施例
如图1至图3所示,所述轴向磁场电机定子冷却结构,包括:
一定子机壳110,所述定子机壳110包括沿轴向拼接的上金属板111、中间隔板112和下金属板113,所述定子机壳110上设置有若干个周向间隔设置的铁芯安装孔110a,每个所述铁芯安装孔依次贯穿所述上金属板111、所述中间隔板112和所述下金属板113;
若干个无轭铁芯120,所述无轭铁芯120安装在所述铁芯安装孔110a内并使两端暴露在所述定子机壳110两侧;
若干个线圈130,所述线圈130套设在所述无轭铁芯120上,所述无轭铁芯120暴露在所述定子机壳110两侧的两端上均套设有线圈130;
所述上金属板111与所述中间隔板112拼接的面上设置有上流道111a,所述下金属板113与所述中间隔板112拼接的面上设置有下流道113a,所述中间隔板112上设置有连通所述上流道111a和所述下流道113a的中间孔112a。
当所述无轭铁芯120插设于所述铁芯安装孔110a内时,所述定子机壳110保持于所述无轭铁芯120的中段,而套设于所述无轭铁芯120的两个所述线圈130保持在所述定子机壳110的轴向两侧,这样能够使设置在所述定子机壳110内的所述上流道111a和所述下流道113a,同时与所述无轭铁芯120和所述线圈130进行接触换热,有效提升冷却效果。另外由于套设于所述无轭铁芯120的两个所述线圈130保持在所述定子机壳110的轴向两侧,以便于同一侧的所述线圈130连接并形成绕组,相对于传统线圈布置于铁芯和定子冷却结构之间来说,避免圆周空间设计增大,以及避免槽内绕组占用率低的缺陷问题。此外所述定子机壳110为分体结构,以便于加工形成所述上流道111a和所述下流道113a,之后将所述上金属板111、所述中间隔板112和所述下金属板113拼接即可,实现可制造性,降低铸造难度。并且通过在所述中间隔板112上设置所述中间孔112a,能够使所述冷却介质在所述上流道111a和所述下流道113a之间循环,并且所述上流道111a和所述下流道113a沿所述无轭铁芯120轴向排列,增加换热面积,提升流动性,进而增强冷却性能。
如图2至图6、图8、图9、图11、图12和图15所示,所述上金属板111具有相对的上拼接部1112和上容置部1111,以及贯穿所述上拼接部1112和所述上容置部1111的若干个铁芯上安装部1113,所述下金属板113具有相对的下拼接部1132和下容置部1131,以及贯穿所述下拼接部1132和所述下容置部1131的若干个铁芯下安装部1133,所述中间隔板112上设置有若干个所述铁芯中安装部1123和若干个中间孔112a,所述铁芯中安装部1123与所述中间孔112a间隔设置。以在所述中间隔板112拼接于所述上拼接部1112和所述下拼接部1132之间后,所述铁芯上安装部1113、所述铁芯中安装部1123和所述铁芯下安装部1133对应形成铁芯安装孔110a,并且所述中间孔112a连通于所述上流道111a和所述下流道113a。
具体地,所述上金属板111、所述中间隔板112和所述下金属板113大致呈片状,以组装形成盘状的所述定子机壳110,即所述定子机壳100的轴向尺寸小,以体现轴向磁场电机轴向尺寸小的特性。所述中间隔板112最薄,可采用金属或非金属材质,而其中所述定子机壳110的外轮廓可呈圆形或方形等,并且所述定子机壳110的中心开设通孔,用于设置转轴300和轴承400,参考图15。另外所述铁芯上安装部1113、所述铁芯中安装部1123和所述铁芯下安装部1133的形状一致,均呈梯形,并对应形成梯形的所述铁芯安装孔110a,以适配安装呈梯形的所述无轭铁芯120,参考图2和图15,其中所述铁芯安装孔110a的梯形上底朝内设置,所述铁芯安装孔110a的梯形下底朝外设置。
更具体地,所述上金属板111上设置有上流道开口槽111a0,所述中间隔板112盖住所述上流道开口槽111a0形成所述上流道111a,所述下金属板113上设置有下流道开口槽113a0,所述中间隔板112盖住所述下流道开口槽113a0形成所述下流道113a。
通过在所述上金属板111暴露在外的所述上拼接部1112加工所述上流道开口槽111a0,以及在所述下金属板113暴露在外的所述下拼接部1132加工所述下流道开口槽113a0,之后将所述中间隔板112拼接于所述上金属板111和所述下金属板113之间即可,以形成所述上流道111a和所述下流道113a。而所述中间孔112a分别与所述上流道开口槽111a0、所述下流道开口槽113a0相接并连通所述上流道开口槽111a0和下流道开口槽113a0。另外所述上金属板111、所述中间隔板112和所述下金属板113还可通过冲压成型,降低铸造难度,同时便于所述暴露的上流道开口槽111a0和下流道开口槽113a0所述进行清洁,相当于传统内置水道的方式来说,水道加工形成后,其内壁粗糙而无法进行清洁,容易发生堵塞等问题。
参考图3,所述中间隔板112分别与所述上金属板111和所述下金属板113之间密封连接,密封连接包括设置密封胶、密封圈或焊接。以所述上金属板111和所述中间隔板112为
例,所述中间隔板112和所述上金属板111的所述上拼接部1112之间设置有密封胶,保证两者之间的密封性,避免冷却介质(包括冷却水、冷却油或冷却气体)泄漏。
所述中间隔板112为柔性材料板,例如橡胶板等,所述上金属板111和所述下金属板113为导热金属板,提升其支撑和换热能力。
参考图1,所述上金属板111、所述中间隔板112和所述下金属板113沿所述无轭铁芯120的轴向排列设置,所述上容置部1111用于布置所述线圈130,所述上拼接部1112上设置的所述上流道111a能够对所述上容置部1111内的所述线圈130冷却,同样地,所述下拼接部1132上设置的所述下流道113a对所述下容置部1131内的所述线圈130进行冷却,而所述上流道111a和所述下流道113a能同时对所述无轭铁芯120进行冷却,合理利用空间,有效保证对所述线圈130和所述无轭铁芯120的冷却能力。
需要说明的是,所述上流道111a和所述下流道113a通过所述中间隔板112隔开,仅通过所述中间孔112a连通,能够使冷却介质充分通过所述上流道111a和所述下流道113a,提升冷却效果。
如图1和图15所示,所述轴向磁场电机定子冷却结构100还包括:
若干个槽楔140,所述无轭铁芯120的轴向两侧分别设置有所述槽楔140,每一所述槽楔140分别插接于相邻的两个所述无轭铁芯120之间,所述线圈130抵接于所述槽楔140和所述定子机壳110之间。
具体地,所述无轭铁芯120的周向两侧分别设置于铁芯插槽121,所述槽楔140沿径向分别插接于相邻两所述无轭铁芯120的铁芯插槽121内,以将所述线圈130固定于所述槽楔140和所述定子机壳110之间。
参考图1和图3,所述上容置部1111和所述下容置部1131均为嵌槽,以使所述线圈130能够内嵌于所述上容置部1111和所述下容置部1131内,并且所述线圈130抵接于所述嵌槽底部和所述槽楔140之间。其中所述无轭铁芯120、所述槽楔140分别与所述定子机壳110的轴向侧面大致齐平,而所述线圈130与所述嵌槽的侧壁之间存在间隙,可用于填充灌封胶,即所述上容置部1111和所述下容置部1131内填充有灌封胶,以使所述定子机壳110、所述线圈130、所述无轭铁芯120等固定。
另外所述线圈130的接线部131位于其径向外侧,并且所述接线部131位于所述线圈130与所述嵌槽的侧壁之间的间隙内,可在所述间隙内进行同侧所述线圈130间的接线。具体地,可逐一在各个所述无轭铁芯120上套设线圈130,然后在所述线圈130与所述嵌槽侧壁之间进行所述线圈130之间的接线,这样能够便于线圈130连接形成绕组。当然同一侧的线圈130可先通过所述接线部131连接形成整体,再一同下线至所述无轭铁芯120上。
如图1所示,所述无轭铁芯120与所述线圈130之间设置有绝缘导热件,所述绝缘导热件可以为陶瓷片或绝缘纸,这样能够保证两者之间的绝缘导热,避免涡流损耗,而影响电机运行性能。具体地,可现在所述无轭铁芯120的外周包裹绝缘纸,然后在所述绝缘纸外套设所述线圈130,以实现所述无轭铁芯120与所述线圈130之间的绝缘。需要说明的是,所述无轭铁芯120的轴向两端面为气隙面,所述绝缘纸应该避免遮挡。
并且所述线圈130与所述定子机壳110之间也可设置有绝缘导热件,所述绝缘导热件设置在所述线圈130和所述嵌槽底部之间,以实现所述线圈130和所述定子机壳110之间的绝缘。
第二实施例
第二实施例的轴向磁场电机定子冷却结构与第一实施例的不同在于,参考图4至图6,所述上流道111a包括上主流道111a1和上分流道111a2,所述上主流道111a1布置成一端与上分流道111a2相连通,另一端与外界水道连通,所述上分流道111a2环绕所述无轭铁芯120布置并在所述无轭铁芯120内侧形成流道缺口1110a;
所述下流道113a包括下主流道113a1和下分流道113a2,所述下主流道113a1布置成一端与下分流道113a2相连通,另一端与外界水道连通,所述下分流道113a2环绕所述无轭铁芯120布置并在所述无轭铁芯120内侧形成流道缺口1110a;
所述中间孔112a在所述流道缺口1110a侧连通所述上分流道111a2和所述下分流道113a2。
所述上分流道111a2和所述下分流道113a2的数量均为多个,所述上主流道111a1连通外界水道,并将外界引入的冷却介质引入至多个所述上分流道1111a,然后各所述上分流道1111a分别通过所述中间孔112a将冷却介质引入至所述下分流道113a2,随后冷却介质流入至所述下主流道113a1,最后通过所述下主流道113a1连接的外接水道排出。其中所述上流道111a和所述下流道113a沿所述无轭铁芯120轴向间隔设置,并且所述上分流道111a2和所述下分流道113a2分别环绕所述无轭铁芯120布置,增加换热面积,并且使冷却介质均匀的通过所述上流道111a和所述下流道113a,进而提升冷却效果。
如图4和图6所示,所述上分流道111a2在所述流道缺口1110a的两端分别通过两个中间孔112a与所述下分流道113a2连通,所述上主流道111a1与所述上分流道111a2在所述无轭铁芯120外侧处连通;所述下主流道113a1与所述下分流道113a2,在所述无轭铁芯120外侧处连通。
其中所述上主流道111a1位于所述无轭铁芯120的径向外侧,所述下主流道113a1也位于所述无轭铁芯120的径向外侧,所述上分流道111a2和所述下分流道113a2间隔设置,并且所述上分流道111a2和所述下分流道113a2分别环绕所述无轭铁芯120布置,另外由于所述流道缺口1110a位于所述无轭铁芯120的径向内侧,增加了所述上分流道111a2和所述下分流道113a2分别与所述无轭铁芯120的换热面积,进而提升冷却性能。
如图5和图6所示,所述上主流道111a1包括进水口111a11和进水环路111a12,所述进水环路111a12围绕在所述无轭铁芯120的外侧,所述进水口111a11连接所述进水环路111a12和所述上金属板111的外侧壁,所述上分流道111a2连接进水环路111a12;
所述下主流道113a1包括出水口113a11和出水环路113a12,所述出水环路113a12围绕在所述无轭铁芯120的外侧,所述出水口113a11连接所述出水环路113a12和下金属板113的外侧壁,所述下分流道113a2连接出水环路113a12。
所述进水口111a11和所述出水口113a11用于连通外界水道,包括连接外接水管等以连通外界水道。所述进水口111a11用于引入冷却介质,所述出水口113a11用于排出冷却介质,作为优选地,当所述中间隔板112拼接于所述上金属板111和所述下金属板113之间后,所述进水口111a1和所述出水口113a1正对设置,便于集中外接管路和管理。所述进水环路111a12和所述出水环路113a12为依次首尾连接的环路。
继续参考图5和图6,所述上分流道111a2包括进水支路111a21、铁芯外圈上支路111a22和铁芯间上支路111a23,所述进水支路111a21连接于所述进水环路111a12和所述铁芯外圈上支路111a22之间,所述铁芯外圈上支路111a22的两端分别连接所述铁芯间上支路111a23,所述铁芯间上支路111a23设置于相邻的两个所述无轭铁芯120之间,并在所述无轭铁芯120内侧的两个所述铁芯间上支路111a23之间形成所述流道缺口1110a;
所述下分流道113a2包括出水支路113a21、铁芯外圈下支路113a22和铁芯间下支路113a23,所述出水支路113a21连接于所述出水环路113a12和所述铁芯外圈下支路113a22之间,所述铁芯外圈下支路113a22两端分别连接所述铁芯间下支路113a23,所述铁芯间下支路113a23设置于相邻的两个所述无轭铁芯120之间,并在所述无轭铁芯120内侧的两个所述铁芯间下支路113a23之间形成所述流道缺口1110a。
所述上分流道111a2和所述下分流道113a2的数量为多个,当所述中间隔板112拼接于所述上金属板111和所述下金属板113之间后,所述上分流道111a2和所述下分流道113a2
间隔设置,保证各所述无轭铁芯120都能被流道环绕布置,并且使冷却介质均匀通过。
如图5所示,位于所述无轭铁芯120内侧,且在相邻的两个所述铁芯间上支路111a23之间形成所述流道缺口1110a。如图6所述,位于所述无轭铁芯120内侧,且在相邻的两个所述铁芯间下支路113a23之间形成所述流道缺口1110a。
如图4至图7所示,冷却介质通过所述进水口111a11引入,然后沿着所述进水环路111a12,并通过若干个所述进水支路111a21流入至其连接的所述铁芯外圈上支路111a22,然后铁芯外圈上支路111a22内的冷却介质流入至其连接的两所述铁芯间上支路111a23,随后通过所述中间孔112a流入至其对应的所述铁芯间下支路113a23,所述铁芯间下支路113a23内的冷却介质依次通过所述铁芯外圈下支路113a22,直至流入至所述出水环路113a21内,最后汇总并从所述出水口113a11排出,合理设计冷却流道路径,不仅增加换热面积,提升冷却介质的流动性,避免冷却路径的设计限制导致部分热量不能被及时排出或导致温度梯度较大,进而造成对定子产生不利影响或不能使电机达到满意的输出能力。
如图18所示,所述流道缺口1110a上设置有断流缝1110a1,所述断流缝1110a1沿轴向贯穿所述定子机壳110,且连通所述铁芯安装孔110a和定子机壳110的内侧壁,并且每个所述铁芯安装孔110a分别对应连通一所述断流缝1110a1,所述断流缝1110a1沿径向延伸,以阻断其所在的定子涡流路径1001,参考图19。进一步说明,每个所述铁芯120分别产生定子涡流路径1001,所述定子涡流路径1001由内至外排列的多个椭圆形回路路径组成,所述断流缝1110a1指的是沿径向设置,且沿轴向贯穿所述定子机壳110的缝隙,而该缝隙阻断各椭圆形回路路径,进而达到降低涡流损耗的效果。另外还可在所述定子机壳110的内侧壁增设封闭环,封闭环可为金属材质的封闭环,并且所述定子机壳110和所述封闭环之间可增设绝缘件,保证结构强度,同时实现绝缘效果。
第三实施例
第三实施例的轴向磁场电机定子冷却结构与第二实施例的不同在于,参考图8至图10,所述上流道111a包括若干个沿径向延伸的上支水路111a3,所述上支水路111a3布置在相邻无轭铁芯120之间并在无轭铁芯120内侧留有上端口111a31,相邻两条上支水路111a3在无轭铁芯120内侧彼此分离形成阻隔空间1110b;
所述下流道113a包括若干个沿径向延伸的下支水路113a3,所述下支水路113a3布置在相邻无轭铁芯120之间并在无轭铁芯120内侧留有下端口113a31,相邻两条下支水路113a3在无轭铁芯120内侧彼此分离形成阻隔空间1110b;
所述中间隔板112上设置有中间孔112a,所述中间孔112a在无轭铁芯120内侧连通所述上支水路111a3的上端口111a31和所述下支水路113a3的下端口113a31。
当所述中间隔板112拼接于所述上金属板111和所述下金属板113之间后,所述上支水路111a3和所述下支水路113a3一一对应。通过设置所述阻隔空间1110b,以使相对应的所述上支水路111a3和所述下支水路113a3通过所述中间孔112a连通。其中所述上端口111a31和所述下端口113a31均位于所述无轭铁芯120的径向内侧,保证换热面积,提升冷却性能。
参考图8和图9,所述上流道111a还包括进水口111a11和进水环路111a12,所述进水环路111a12围绕在所述无轭铁芯120的外侧,所述进水口111a11连接所述进水环路111a12和所述上金属板111的外侧壁,所述上支水路111a3连接进水环路111a12;
所述下流道113a还包括出水口113a11和出水环路113a12,所述出水环路113a12围绕在所述无轭铁芯120的外侧,所述出水口113a11连接所述出水环路113a12和下金属板113的外侧壁,所述下支水路113a3连接出水环路113a12。
如图8至图10所示,冷却介质通过所述进水口111a11引入,然后沿着所述进水环路111a12,并通过若干个所述铁芯间上支路111a3,所述铁芯间上支路111a3内的冷却介质通过所述中间孔112a流入至所述铁芯间下支路113a3,然后流入至所述出水环路113a12内,最后
汇总并从所述出水口113a11排出,合理设计冷却流道路径,不仅增加换热面积,提升冷却介质的流动性,避免冷却路径的设计限制导致部分热量不能被及时排出或导致温度梯度较大,进而造成对定子产生不利影响或不能使电机达到满意的输出能力。
为降低涡流损耗,可同样在所述阻隔空间1110b上设置有断流缝1110a1。具体内容可参考第二实施例的断流缝1110a1,在此不作赘述。
第四实施例
第四实施例的轴向磁场电机定子冷却结构与第二实施例的不同在于,参考图11至图14,所述上流道,111a包括上主流道111a1、第一上分流道111a4和第二上分流道111a5,所述上主流道111a1与第一上分流道111a4连通,所述第二上分流道111a5独立设置,所述第一上分流道111a4和第二上分流道111a5环绕所述无轭铁芯120布置并在所述无轭铁芯120内侧形成流道缺口1110a;
所述下流道113a包括下主流道113a1、第一下分流道113a4和第二下分流道113a5,所述下主流道113a1与第一下分流道113a4连通,所述第二下分流道113a5独立设置,所述第一下分流道113a4和第二下分流道113a5环绕所述无轭铁芯120布置并在所述无轭铁芯120内侧形成流道缺口1110a;
所述中间隔板112上设置有中间孔112a,所述中间孔112a布置在所述流道缺口1110a两侧,所述第一上分流道111a4和第二下分流道113a5通过中间孔112a连通,所述第二上分流道111a5和第一下分流道113a4通过中间孔112a连通,所述第二上分流道111a5和第二下分流道113a5通过中间孔112a连通。
所述上主流道111a1用于引流冷却介质至其连通的所述第一上分流道111a4,然后所述第一上分流道111a4通过所述中间孔112a将冷却介质引至所述第二下分流道113a5,所述第二下分流道113a5通过所述中间孔112a将冷却介质引至所述第二上分流道111a5,所述第二上分流道111a5通过所述中间孔112a将冷却介质引至第一下分流道113a4,最后通过所述下主流道113a1将冷却介质排出。
可见,所述第一上分流道111a4、所述第二下分流道113a5、所述第二上分流道111a5、所述第一下分流道113a4依次连通。并且当所述中间隔板112拼接于所述上金属板111和所述下金属板113之间后,依次相连通的所述第一上分流道111a4、所述第二下分流道113a5、所述第二上分流道111a5、所述第一下分流道113a4在周向方向上依次部分错开并延伸,保证各所述无轭铁芯120周围均布置水道,保证冷却效果。
参考图11和图12,所述第二上分流道111a5包括彼此独立的多个,所述第一上分流道111a4包括彼此独立的多个。同理所述第二下分流道113a5包括彼此独立的多个,所述第一下分流道113a4包括彼此独立的多个。
具体地,所述第一上分流道111a4的数量为两个,且分别连接于所述上主流道111a1的两端,所述第二下分流道113a5的数量为四个,每个所述第一上分流道111a4分别对应两个所述第二下分流道113a5,以使所述第一上分流道111a4两侧分别通过一所述第二下分流道113a5连通所述第二上分流道111a5。
继续参考图11和图12,所述第一上分流道111a4包括第一进水支路111a41、第一铁芯外圈上支路111a42和第一铁芯间上支路111a43,所述第一进水支路111a41连接所述上主流道111a1和所述第一铁芯外圈上支路111a42之间,所述第一铁芯外圈上支路111a42连接两个所述第一铁芯间上支路111a43,第一铁芯间上支路111a43设置于相邻的两个所述无轭铁芯120之间;
所述第二上分流道111a5包括第二铁芯外圈上支路111a52和第二铁芯间上支路111a53,所述第二铁芯外圈上支路111a52连接三个所述第二铁芯间上支路111a53,所述第二铁芯间上支路111a53设置于相邻的两个所述无轭铁芯120之间;
所述第一下分流道113a4包括第一出水支路113a41、第一铁芯外圈下支路113a42和第一铁芯间下支路113a43,所述第一出水支路113a41连接所述下主流道113a1和所述第一铁芯外圈下支路113a42,所述第一出水支路113a41连接所述第一铁芯外圈下支路113a42中心,所述第一铁芯外圈下支路113a42连接四个所述第一铁芯间下支路113a43,所述第一铁芯间下支路113a43设置于相邻的两个所述无轭铁芯120之间;
所述第二下分流道113a5包括第二铁芯外圈下支路113a52和第二铁芯间下支路113a53,所述第二铁芯外圈下支路113a52连接两个所述第二铁芯间下支路113a53,所述第二铁芯间下支路113a53设置于相邻的两个所述无轭铁芯120之间。
所述上主流道111a1包括进水口111a11和进水环路111a12,所述进水环路111a12围绕在所述无轭铁芯120的外侧,所述进水口111a11连接所述进水环路111a12和所述上金属板111的外侧壁,所述第一上分流道111a4连接进水环路111a12;
所述下主流道113a1包括出水口113a11和出水环路113a12,所述出水环路113a12围绕在所述无轭铁芯120的外侧,所述出水口113a11连接所述出水环路113a12和下金属板113的外侧壁,所述第一下分流道113a4连接出水环路113a12。
所述进水环路111a12和所述出水环路113a12为半环形的环路,其弧度大致为90°。所述进水环路111a12和所述出水环路113a12沿周向错开设置,其中所述出水环路113a12相对所述进水环路111a12偏离90°,以使两个所述第一进水支路111a41的中心连线与两个所述第一出水支路113a41的中心连线相垂直。这样所述第一进水支路111a41引入的冷却介质分为两路径,并且每个路径在所述定子机壳110上的路径角度为90°,能够使冷却介质均匀的通过,提升冷却效果。
如图11至图14所示,冷却介质通过所述进水口111a11引入,然后沿着所述进水环路111a12,并通过两个所述第一进水支路111a41流入至其连接的所述第一上分流道111a4,然后所述第一上分流道111a4通过所述中间孔112a将冷却介质引至所述第二下分流道113a5,所述第二下分流道113a5通过所述中间孔112a将冷却介质引至所述第二上分流道111a5,所述第二上分流道111a5通过所述中间孔112a将冷却介质引至第一下分流道113a4,最后通过所述下主流道113a1将冷却介质排出,合理设计冷却流道路径,不仅增加换热面积,提升冷却介质的流动性,避免冷却路径的设计限制导致部分热量不能被及时排出或导致温度梯度较大,进而造成对定子产生不利影响或不能使电机达到满意的输出能力。
第五实施例
如图15至图17所示,所述轴向磁场电机,所述轴向磁场电机包括第一至第四任一实施例的轴向磁场电机定子冷却结构100,所述轴向磁场电机还包括两转子200,两所述转子200气隙地保持于所述无轭铁芯120的轴向两侧。
由于所述轴向磁场电机采用了上述实施例的轴向磁场电机定子冷却结构100,因此所述轴向磁场电机的有益效果参考上述实施例的所述轴向磁场电机定子冷却结构100。
继续参考图12和图17,所述轴向磁场电机还包括一转轴300和至少一轴承400,所述转轴300穿设于所述定子机壳110的中心,所述转轴300和所述定子机壳110之间设置有所述轴承400,所述转子200固定于所述转轴300上,且所述转子200与所述定子100气隙地保持。
如图15所示,所述转子200包括一转子盘210和若干个磁钢220,若干个所述磁钢220呈圆周间隔设置于所述转子盘210上,所述磁钢220与所述无轭铁芯120气隙地保持。当所述磁钢220设置于所述转子盘210上后,所述磁钢220略微突出于所述转子盘210表面,以与所述铁芯130气隙配合。
所述转子200还包括若干个压板230,相邻的两个所述磁钢220之间设置有一压板230,所述压板230通过紧固件固定在所述磁钢容置槽,并利用斜面与所述磁钢220的周向侧面适
配,以对所述磁钢220进行轴向和周向定位。
所述磁钢220由若干个硅钢片沿径向堆叠而成,相邻的两个所述硅钢片之间形成断流面,所述断流面能够阻断所述磁钢涡流路径,达到抑制涡流损耗的效果。
所述磁钢220呈梯形,其数量与无轭铁芯120的数量相一致,并且所述磁钢220的梯形上底朝内设置,所述磁钢220的梯形下底朝外设置。即组成所述磁钢220的若干个所述硅钢片221,其宽度沿径向从内至外增大。
如图15所示,所述定子100的数量为一个,所述转子200的数量为两个,两个所述转子200气隙地保持于所述定子100的轴向两侧,以形成单定子双转子的轴向磁场电机。当然可根据数量不同,得到单定子单转子,或者双定子单转子等轴向磁场电机。
第六实施例
如图1至图3所示,所述轴向磁场电机定子冷却结构的制造方法,用于制造第一至第三任一实施例的轴向磁场电机定子冷却结构100,所述方法包括以下步骤:
a、提供一定子机壳110,所述定子机壳110上设置有若干个周向间隔设置的铁芯安装孔110a,所述定子机壳110包括上金属板111、中间隔板112和下金属板113,所述铁芯安装孔110a依次贯穿所述上金属板111、中间隔板112和所述下金属板113,所述上金属板111具有上拼接部1112,所述上拼接部1112上设置有上流道111a,所述下金属板113具有下拼接部1132,所述下拼接部1132上设置有下流道113a,所述中间隔板112上设置有若干个中间孔112a;
b、将所述中间隔板112拼接于所述上拼接部1112和所述下拼接部1132之间,以使所述中间孔112a连通所述上流道111a和所述下流道113a;
c、在所述铁芯安装孔110内***无轭铁芯120;
d、在所述无轭铁芯120的轴向两侧套设线圈130,并使所述线圈130保持于所述定子机壳110的轴向两侧。
所述上流道111a和所述下流道113a的形状参考第一至第三实施例,在此不作赘述。所述定子机壳110为分体结构,以便于加工形成所述上流道111a和所述下流道113a,之后将所述上金属板111、所述中间隔板112和所述下金属板113拼接即可,实现可制造性,降低铸造难度。同时便于所述暴露在所述上拼接部1112上的上流道111a,以及暴露在所述下拼接部1132上的下流道113a的进行清洁。
在所述步骤b中,将所述中间隔板112密封连接于所述上金属板111和所述下金属板113之间,以增加密封性。密封连接包括设置密封胶、密封圈或焊接。
所述上金属板111上贯穿设置有铁芯上安装部1113,所述下金属板113上贯穿设置有铁芯下安装部1133,所述中间隔板贯穿设置有铁芯中安装部1123,进而在所述步骤b中,所述铁芯上安装部1113、所述铁芯中安装部1123和所述铁芯下安装部1133对应形成铁芯安装孔110a。
在所述步骤d之后,所述方法还包括:
在相邻的两个所述无轭铁芯120之间插接槽楔140,以使所述线圈130抵接于所述槽楔140和所述定子机壳110之间。
所述上金属板111上设置有上容置部1111,所述下金属板113上设置有下容置部1131,在内嵌所述线圈130的上容置部1111和所述下容置部1131内填充灌封胶,以使所述定子机壳110、所述线圈130、所述无轭铁芯120等固定。
以上所述的实施例仅用于说明本发明的技术思想及特点,其目的在于使本领域内的技术人员能够了解本发明的内容并据以实施,不能仅以本实施例来限定本发明的专利采用范围,即凡依本发明所揭示的精神所作的同等变化或修饰,仍落在本发明的专利范围内。
Claims (22)
- 一种轴向磁场电机定子冷却结构(100),其特征在于,包括:一定子机壳(110),所述定子机壳(110)包括沿轴向拼接的上金属板(111)、中间隔板(112)和下金属板(113),所述定子机壳(110)上设置有若干个周向间隔设置的铁芯安装孔(110a),每个所述铁芯安装孔依次贯穿所述上金属板(111)、所述中间隔板(112)和所述下金属板(113);若干个无轭铁芯(120),所述无轭铁芯(120)安装在所述铁芯安装孔(110a)内并使两端暴露在所述定子机壳(110)两侧;若干个线圈(130),所述线圈(130)套设在所述无轭铁芯(120)上,所述无轭铁芯(120)暴露在所述定子机壳(110)两侧的两端上均套设有线圈(130);所述上金属板(111)与所述中间隔板(112)拼接的面上设置有上流道(111a),所述下金属板(113)与所述中间隔板(112)拼接的面上设置有下流道(113a),所述中间隔板(112)上设置有连通所述上流道(111a)和所述下流道(113a)的中间孔(112a)。
- 如权利要求1所述的轴向磁场电机定子冷却结构(100),其特征在于,所述上流道(111a)包括上主流道(111a1)和上分流道(111a2),所述上主流道(111a1)布置成一端与上分流道(111a2)相连通,另一端与外界水道连通,所述上分流道(111a2)环绕所述无轭铁芯(120)布置并在所述无轭铁芯(120)内侧形成流道缺口(1110a);所述下流道(113a)包括下主流道(113a1)和下分流道(113a2),所述下主流道(113a1)布置成一端与下分流道(113a2)相连通,另一端与外界水道连通,所述下分流道(113a2)环绕所述无轭铁芯(120)布置并在所述无轭铁芯(120)内侧形成流道缺口(1110a);所述中间隔板(112)上设置有中间孔(112a),所述中间孔(112a)在所述流道缺口(1110a)侧连通所述上分流道(111a2)和所述下分流道(113a2)。
- 如权利要求2所述的轴向磁场电机定子冷却结构(100),其特征在于,所述上分流道(111a2)在所述流道缺口(1110a)的两端分别通过两个中间孔(112a)与所述下分流道(113a2)连通,所述上主流道(111a1)与所述上分流道(111a2)在所述无轭铁芯(120)外侧处连通;所述下主流道(113a1)与所述下分流道(113a2),在所述无轭铁芯(120)外侧处连通。
- 如权利要求2所述的轴向磁场电机定子冷却结构(100),其特征在于,所述上主流道(111a1)包括进水口(111a11)和进水环路(111a12),所述进水环路(111a12)围绕在所述无轭铁芯(120)的外侧,所述进水口(111a11)连接所述进水环路(111a12)和所述上金属板(111)的外侧壁,所述上分流道(111a2)连接进水环路(111a12);所述下主流道(113a1)包括出水口(113a11)和出水环路(113a12),所述出水环路(113a12)围绕在所述无轭铁芯(120)的外侧,所述出水口(113a11)连接所述出水环路(113a12)和下金属板(113)的外侧壁,所述下分流道(113a2)连接出水环路(113a12)。
- 如权利要求4所述的轴向磁场电机定子冷却结构(100),其特征在于,所述上分流道(111a2)包括进水支路(111a21)、铁芯外圈上支路(111a22)和铁芯间上支路(111a23),所述进水支路(111a21)连接于所述进水环路(111a12)和所述铁芯外圈上支路(111a22)之间,所述铁芯外圈上支路(111a22)的两端分别连接所述铁芯间上支路(111a23),所述铁芯间上支路(111a23)设置于相邻的两个所述无轭铁芯(120)之间,并在所述无轭铁芯(120)内侧的两个所述铁芯间上支路(111a23)之间形成所述流道缺口(1110a);所述下分流道(113a2)包括出水支路(113a21)、铁芯外圈下支路(113a22)和铁芯间下支路(113a23),所述出水支路(113a21)连接于所述出水环路(113a12)和所述铁芯外圈下支路(113a22)之间,所述铁芯外圈下支路(113a22)两端分别连接所述铁芯间下支路(113a23),所述铁芯间下支路(113a23)设置于相邻的两个所述无轭铁芯(120)之间,并在所述无轭铁芯(120)内侧的两个所述铁芯间下支路(113a23)之间形成所述流道缺口(1110a)。
- 如权利要求1所述的轴向磁场电机定子冷却结构(100),其特征在于,还包括:所述上流道(111a)包括若干个沿径向延伸的上支水路(111a3),所述上支水路(111a3)布置在相邻无轭铁芯(120)之间并在无轭铁芯(120)内侧留有上端口(111a31),相邻两条上支水路(111a3)在无轭铁芯(120)内侧彼此分离形成阻隔空间(1110b);所述下流道(113a)包括若干个沿径向延伸的下支水路(113a3),所述下支水路(113a3)布置在相邻无轭铁芯(120)之间并在无轭铁芯(120)内侧留有下端口(113a31),相邻两条下支水路(113a3)在无轭铁芯(120)内侧彼此分离形成阻隔空间(1110b);所述中间隔板(112)上设置有中间孔(112a),所述中间孔(112a)在无轭铁芯(120)内侧连通所述上支水路(111a3)的上端口(111a31)和所述下支水路(113a3)的下端口(113a31)。
- 如权利要求6所述的轴向磁场电机定子冷却结构(100),其特征在于,所述阻隔空间(1110b)上设置有断流缝(1110a1)。
- 如权利要求6所述的轴向磁场电机定子冷却结构(100),其特征在于,所述上流道(111a)还包括进水口(111a11)和进水环路(111a12),所述进水环路(111a12)围绕在所述无轭铁芯(120)的外侧,所述进水口(111a11)连接所述进水环路(111a12)和所述上金属板(111)的外侧壁,所述上支水路(111a3)连接进水环路(111a12);所述下流道(113a)还包括出水口(113a11)和出水环路(113a12),所述出水环路(113a12)围绕在所述无轭铁芯(120)的外侧,所述出水口(113a11)连接所述出水环路(113a12)和下金属板(113)的外侧壁,所述下支水路(113a3)连接出水环路(113a12)。
- 如权利要求1所述的轴向磁场电机定子冷却结构(100),其特征在于,所述上流道(111a)包括上主流道(111a1)、第一上分流道(111a4)和第二上分流道(111a5),所述上主流道(111a1)与第一上分流道(111a4)连通,所述第二上分流道(111a5)独立设置,所述第一上分流道(111a4)和第二上分流道(111a5)环绕所述无轭铁芯(120)布置并在所述无轭铁芯(120)内侧形成流道缺口(1110a);所述下流道(113a)包括下主流道(113a1)、第一下分流道(113a4)和第二下分流道(113a5),所述下主流道(113a1)与第一下分流道(113a4)连通,所述第二下分流道(113a5)独立设置,所述第一下分流道(113a4)和第二下分流道(113a5)环绕所述无轭铁芯(120)布置并在所述无轭铁芯(120)内侧形成流道缺口(1110a);所述中间隔板(112)上设置有中间孔(112a),所述中间孔(112a)布置在所述流道缺口(1110a)两侧,所述第一上分流道(111a4)和第二下分流道(113a5)通过中间孔(112a)连通,所述第二上分流道(111a5)和第一下分流道(113a4)通过中间孔(112a)连通,所述第二上分流道(111a5)和第二下分流道(113a5)通过中间孔(112a)连通。
- 如权利要求9所述的轴向磁场电机定子冷却结构(100),其特征在于,所述第二上分流道(111a5)包括彼此独立的多个,所述第一上分流道(111a4)包括彼此独立的多个。
- 如权利要求9所述的轴向磁场电机定子冷却结构(100),其特征在于,所述第一上分流道(111a4)、所述第二下分流道(113a5)、所述第二上分流道(111a5)、所述第一下分流道(113a4)依次连通。
- 如权利要求11所述的轴向磁场电机定子冷却结构(100),其特征在于,依次相连通的所述第一上分流道(111a4)、所述第二下分流道(113a5)、所述第二上分流道(111a5)、所述第一下分流道(113a4)在周向方向上依次部分错开并延伸。
- 如权利要求9所述的轴向磁场电机定子冷却结构(100),其特征在于,所述第一上分流道(111a4)包括第一进水支路(111a41)、第一铁芯外圈上支路(111a42)和第一铁芯间上支路(111a43),所述第一进水支路(111a41)连接所述上主流道(111a1)和所述第一铁芯外圈上支路(111a42)之间,所述第一铁芯外圈上支路(111a42)连接两个所述第一铁芯间上支路(111a43),第一铁芯间上支路(111a43)设置于相邻的两个所述无轭铁芯 (120)之间;所述第二上分流道(111a5)包括第二铁芯外圈上支路(111a52)和第二铁芯间上支路(111a53),所述第二铁芯外圈上支路(111a52)连接三个所述第二铁芯间上支路(111a53),所述第二铁芯间上支路(111a53)设置于相邻的两个所述无轭铁芯(120)之间;所述第一下分流道(113a4)包括第一出水支路(113a41)、第一铁芯外圈下支路(113a42)和第一铁芯间下支路(113a43),所述第一出水支路(113a41)连接所述下主流道(113a1)和所述第一铁芯外圈下支路(113a42),所述第一出水支路(113a41)连接所述第一铁芯外圈下支路(113a42)中心,所述第一铁芯外圈下支路(113a42)连接四个所述第一铁芯间下支路(113a43),所述第一铁芯间下支路(113a43)设置于相邻的两个所述无轭铁芯(120)之间;所述第二下分流道(113a5)包括第二铁芯外圈下支路(113a52)和第二铁芯间下支路(113a53),所述第二铁芯外圈下支路(113a52)连接两个所述第二铁芯间下支路(113a53),所述第二铁芯间下支路(113a53)设置于相邻的两个所述无轭铁芯(120)之间。
- 如权利要求13所述的轴向磁场电机定子冷却结构(100),其特征在于,所述第一进水支路(111a41)和所述第一出水支路(113a41)的数量分别为两个,并且两个所述第一进水支路(111a41)的中心连线与两个所述第一出水支路(113a41)的中心连线相垂直。
- 如权利要求9所述的轴向磁场电机定子冷却结构(100),其特征在于,所述上主流道(111a1)包括进水口(111a11)和进水环路(111a12),所述进水环路(111a12)围绕在所述无轭铁芯(120)的外侧,所述进水口(111a11)连接所述进水环路(111a12)和所述上金属板(111)的外侧壁,所述第一上分流道(111a4)连接进水环路(111a12);所述下主流道(113a1)包括出水口(113a11)和出水环路(113a12),所述出水环路(113a12)围绕在所述无轭铁芯(120)的外侧,所述出水口(113a11)连接所述出水环路(113a12)和下金属板(113)的外侧壁,所述第一下分流道(113a4)连接出水环路(113a12)。
- 如权利要求2或9所述的轴向磁场电机定子冷却结构(100),其特征在于,所述流道缺口(1110a)上设置有断流缝(1110a1)。
- 如权利要求1、2、6或9任一项所述的轴向磁场电机定子冷却结构(100),其特征在于,所述上金属板(111)具有相对的上拼接部(1112)和上容置部(1111),以及贯穿所述上拼接部(1112)和所述上容置部(1111)的铁芯上安装部(1113),所述上流道(111a)设置于所述上拼接部(1112)上;所述下金属板(113)具有相对的下拼接部(1132)和下容置部(1131),以及贯穿所述下拼接部(1132)和所述下容置部(1131)的铁芯下安装部(1133),所述下流道(113a)设置于所述下拼接部(1132)上;所述中间隔板(112)上设置有若干个所述铁芯中安装部(1123),以在所述中间隔板(112)拼接于所述上拼接部(1112)和所述下拼接部(1132)之间后,所述铁芯上安装部(1113)、所述铁芯中安装部(1123)和所述铁芯下安装部(1133)对应形成铁芯安装孔(110a),以及套设在所述无轭铁芯(120)上的两个所述线圈(130),分别设置在所述上容置部(1111)和所述下容置部(1131)内。
- 如权利要求17所述的轴向磁场电机定子冷却结构(100),其特征在于,所述上容置部(1111)和所述下容置部(1131)均为嵌槽,所述嵌槽内填充有灌封胶。
- 如权利要求1、2、6或9任一项所述的轴向磁场电机定子冷却结构(100),其特征在于,还包括:若干个槽楔(140),所述无轭铁芯(120)的轴向两侧分别设置有所述槽楔(140),每一所述槽楔(140)分别插接于相邻的两个所述无轭铁芯(120)之间,所述线圈(130)抵接于所述槽楔(140)和所述定子机壳(110)之间。
- 如权利要求1、2、6或9任一项所述的轴向磁场电机定子冷却结构(100),其特征在 于,所述无轭铁芯(120)与所述线圈(130)之间设置有绝缘导热件;和/或,所述线圈(130)与所述定子机壳(110)之间设置有绝缘导热件。
- 一种轴向磁场电机,其特征在于,包括如权利要求1至20任一项所述的轴向磁场电机定子冷却结构(100),所述轴向磁场电机还包括两转子(200),两所述转子(200)气隙地保持于所述无轭铁芯(120)的轴向两侧。
- 一种轴向磁场电机定子冷却结构的制造方法,其特征在于,包括以下步骤:a、提供一定子机壳(110),所述定子机壳(110)上设置有若干个周向间隔设置的铁芯安装孔(110a),所述定子机壳(110)包括上金属板(111)、中间隔板(112)和下金属板(113),所述铁芯安装孔(110a)依次贯穿所述上金属板(111)、中间隔板(112)和所述下金属板(113),所述上金属板(111)具有上拼接部(1112),所述上拼接部(1112)上设置有上流道(111a),所述下金属板(113)具有下拼接部(1132),所述下拼接部(1132)上设置有下流道(113a),所述中间隔板(112)上设置有若干个中间孔(112a);b、将所述中间隔板(112)拼接于所述上拼接部(1112)和所述下拼接部(1132)之间,以使所述中间孔(112a)连通所述上流道(111a)和所述下流道(113a);c、在所述铁芯安装孔(110)内***无轭铁芯(120);d、在所述无轭铁芯(120)的轴向两侧套设线圈(130),并使所述线圈(130)保持于所述定子机壳(110)的轴向两侧。
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