CN114696557A - Water-cooled casing of axial flux permanent magnet motor and intelligent cooling control method - Google Patents
Water-cooled casing of axial flux permanent magnet motor and intelligent cooling control method Download PDFInfo
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- CN114696557A CN114696557A CN202210223489.3A CN202210223489A CN114696557A CN 114696557 A CN114696557 A CN 114696557A CN 202210223489 A CN202210223489 A CN 202210223489A CN 114696557 A CN114696557 A CN 114696557A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K16/00—Machines with more than one rotor or stator
- H02K16/04—Machines with one rotor and two stators
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- 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
- H02K1/16—Stator cores with slots for windings
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- 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
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- 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
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- 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
- H02K5/203—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium specially adapted for liquids, e.g. cooling jackets
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- 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
Abstract
The invention relates to a water-cooled casing of an axial flux permanent magnet motor and an intelligent cooling control method, wherein the water-cooled casing comprises an outer casing (101), an inner casing (102) and a main water channel cover plate (103); the inner shell (102) is arranged on the rear side of the outer shell (101), and the main water channel cover plate (103) is arranged on the front side of the outer shell (101); the inner side is the side close to the stator core, and the outer side is the side far away from the stator core; a main water channel is arranged on the outer machine shell (101), and an auxiliary water channel is arranged on the inner machine shell (102). The invention improves the heat dissipation of the permanent magnet, can select higher heat load and can reduce the volume of the motor; the requirement on water tightness is low, and the problem of leakage is not easy to occur; the main water channel and the auxiliary water channel are respectively controlled, and the heat management of the motor is more flexible.
Description
Technical Field
The invention relates to the technical field of motor cooling, in particular to a water-cooled shell of an axial flux permanent magnet motor and an intelligent cooling control method. The axial flux permanent magnet motor is particularly a double-stator single-rotor axial flux permanent magnet motor.
Background
With the popularization and spread of electric vehicles, the requirements on the performance and the volume of driving equipment of the electric vehicles are gradually improved. The axial flux permanent magnet motor has the characteristics of short axial length and long radial length, and has the potential of directly becoming a hub motor. Under the premise that the output power of the axial flux permanent magnet motor is not changed, the volume of the axial flux permanent magnet motor is further reduced, a higher heat load is required to be selected at the initial design stage of the motor, and therefore the temperature rise of the motor can be improved.
For a double-stator single-rotor axial magnetic flux permanent magnet motor, the water cooling structures are almost distributed on the two radial sides of the machine shell, the cooling effect on a stator core and a winding is good, and the cooling effect on a permanent magnet in the middle of the motor and a rotor support is general. The permanent magnet is the most sensitive part affected by temperature in the motor, and if the temperature rise exceeds the Curie temperature of the permanent magnet, the permanent magnet may lose magnetism, so that the safe and stable operation of the double-stator single-rotor axial magnetic flux permanent magnet motor is affected.
At present, the related patents relating to the casing of the water-cooled axial flux permanent magnet motor can be divided into the following categories:
1. the end cover is opened for cooling (refer to Chinese patent No. CN107591944A), and the water tightness is easy to be reduced due to the vibration of the motor in the actual use, so that the leakage of the cooling liquid occurs;
2. the width of the cooling water channel is increased on the outermost layer (refer to Chinese patent No. CN214205191U), so that the flow velocity of the cooling liquid on the outermost layer is reduced, and the cooling effect on the outermost layer is reduced;
3. the axial casing is cooled by adopting a series water channel mode (refer to Chinese patent No. CN105576919A), the pressure difference of an inlet and an outlet can be increased by adopting the series water channel mode, and the pressure difference of the inlet and the outlet is ensured to be in a proper range by widening the cross section of the water channel during design, so that the volume of the casing is increased.
The information disclosed in this background section is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the water-cooled casing of the axial flux permanent magnet motor and the intelligent cooling control method, so that the heat dissipation of a permanent magnet is improved, higher heat load can be selected, and the volume of the motor can be reduced; the requirement on water tightness is low, and the problem of leakage is not easy to occur; the main water channel and the auxiliary water channel are respectively controlled, and the heat management of the motor is more flexible.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
the water-cooled casing of the axial flux permanent magnet motor is characterized by comprising an outer casing 101, an inner casing 102 and a main water channel cover plate 103;
the inner casing 102 is arranged at the rear side of the outer casing 101, and the main waterway cover plate 103 is arranged at the front side of the outer casing 101;
the inner side refers to the side close to the stator core, and the outer side refers to the side far away from the stator core;
a main waterway is provided on the outer casing 101, and an auxiliary waterway is provided on the inner casing 102.
On the basis of the technical scheme, the outer casing 101 is cast by adopting a casting process, the whole outer casing 101 is in an oblate column shape and comprises an outer annular wall body 201 and an inner annular wall body 202, a middle partition plate 203 is arranged between the outer annular wall body 201 and the inner annular wall body 202, and a first through hole 204 is arranged in the middle of the middle partition plate 203;
the middle partition 203 divides the space between the outer annular wall body 201 and the inner annular wall body 202 into a front recessed area and a rear recessed area;
a main water channel groove 105 is arranged in the front side concave area, and a plurality of layers of snakelike reciprocating main water channels are formed in the main water channel groove 105 along the circumferential direction;
in the front side recessed area, a circle of main waterway cover plate assembly holes 110 are respectively arranged along the outer ring wall body 201 and the inner ring wall body 202;
the rear recessed area is used to accommodate the inner housing 102;
a first cylinder, a second cylinder, a third cylinder and a fourth cylinder which are arranged in a rectangular shape are arranged on the outer surface of the outer machine shell 101, a main water channel water inlet 106 is formed in a shaft hole of the first cylinder, a main water channel water outlet 107 is formed in a shaft hole of the second cylinder, an auxiliary water channel water inlet 108 is formed in a shaft hole of the third cylinder, and an auxiliary water channel water outlet 109 is formed in a shaft hole of the fourth cylinder;
a main water channel water inlet 106 is communicated with a notch at one end of the main water channel, and a main water channel water outlet 107 is communicated with a notch at the other end of the main water channel;
the outer surface of the outer housing 101 is provided with a first winding leading-out groove 104, the first winding leading-out groove 104 is two rectangular grooves arranged at a certain distance, and the first winding leading-out groove 104 is communicated with the rear side concave area.
On the basis of the technical scheme, the outer surface of the outer casing 101 is provided with a plurality of semi-cylinders 205, the semi-cylinders 205 are protruded along the width direction of the outer casing 101, and the outer casing assembling holes 111 are arranged along the axial direction of the semi-cylinders 205.
On the basis of the technical scheme, the main water channel cover plate 103 is of an annular plate-shaped structure, the inner diameter and the outer diameter of the main water channel cover plate 103 are matched with the outer ring wall body 201 and the inner ring wall body 202, and a second through hole matched with the main water channel cover plate assembling hole 110 is formed in the main water channel cover plate 103.
On the basis of the technical scheme, the inner casing 102 is of an annular structure, the thickness of the inner casing 102 is matched with the recess depth of the rear side recess area, the outer diameter of the inner casing 102 is matched with the diameter of the rear side recess area, and the inner diameter of the inner casing 102 is matched with the size of the stator core 3;
a second winding wire leading-out groove 214 is arranged on the inner housing 102, and the second winding wire leading-out groove 214 is matched with the first winding wire leading-out groove 104;
an auxiliary water channel is arranged on the outer surface of the inner shell 102, a water inlet 108 of the auxiliary water channel is communicated with a notch at one end of the auxiliary water channel, and a water outlet 109 of the auxiliary water channel is communicated with a notch at the other end of the auxiliary water channel.
On the basis of the technical scheme, the auxiliary water channels are divided into an auxiliary axial Z water channel and an auxiliary radial Z water channel;
the auxiliary axial Z-channel groove 112 forms an auxiliary channel in a serpentine reciprocating manner along the axial direction;
the auxiliary radial Z-waterway groove 113 is formed to reciprocate in a serpentine shape in a circumferential direction.
An axial flux permanent magnet motor is characterized by comprising a front side machine shell 1 and a rear side machine shell 2, wherein the front side machine shell 1 and the rear side machine shell 2 are the same and adopt the water-cooled machine shell structure;
the axial flux permanent magnet motor adopts a double-stator single-rotor structure, and matched temperature sensors 7 are arranged in the double stators.
On the basis of the technical scheme, the method specifically comprises the following steps:
a stator core 3 provided with a temperature sensor 7, in the slot of which a stator winding 4 is wound;
the number of the stator cores 3 is two, one stator core is arranged in the front side machine shell 1 and is bonded with the inner machine shell 102 in the front side machine shell 1, and the other stator core is arranged in the rear side machine shell 2 and is bonded with the inner machine shell 102 in the rear side machine shell 2;
both ends of the winding wire of the stator core 3 are respectively led out from a first wire lead-out slot 104;
a rotor 5 with permanent magnets 6 is arranged between the two stator cores 3.
The intelligent cooling control method of the axial flux permanent magnet motor is characterized in that the axial flux permanent magnet motor is the double-stator single-rotor motor;
the water flow rates of the main water channel and the auxiliary water channel are adjusted according to signals fed back by the temperature sensor 7, and the water flow rates of the main water channel and the auxiliary water channel are respectively adjusted.
On the basis of the technical scheme, the regulation of the water flow of the main water channel comprises the following steps:
the water flow of the main water channel is input by a temperature signal, and a water flow control signal of the main water channel is output after the temperature-water flow control and hysteresis comparison links of the main water channel;
the water flow control signal of the main water channel and the actually measured signal of the main water channel flow meter are differentiated to control the opening amplitude of the main water channel throttle valve, so that the flow of the main water channel is regulated;
the regulation of the water flow rate of the auxiliary flume comprises:
the water flow of the auxiliary water channel is input by a temperature signal, and a water flow control signal of the auxiliary water channel is output after the temperature-water flow control and hysteresis comparison links of the auxiliary water channel;
the water flow control signal of the auxiliary water channel and the actually measured signal of the auxiliary water channel flowmeter are differentiated to control the opening amplitude of the auxiliary water channel throttle valve, so that the flow of the auxiliary water channel is adjusted;
and carrying out difference on the sum of the main water channel and auxiliary water channel water flow control signals and the sum of the actual measurement flow meters of the main water channel and the auxiliary water channel to obtain the output requirement of the cooling water pump, and correspondingly controlling the total flow.
The water-cooled casing of the axial flux permanent magnet motor and the intelligent cooling control method have the following beneficial effects:
1. the heat dissipation of the permanent magnet of the double-stator single-rotor axial flux permanent magnet motor is improved, so that a higher heat load can be selected at the initial design stage of the motor, and the volume of the axial flux permanent magnet motor is further reduced on the premise of maintaining the output power of the axial flux permanent magnet motor unchanged.
2. The water passage is maintained inside the water-cooled casing as the end cover, and the requirement for water tightness is low, and the problem of leakage of cooling liquid is not easy to occur.
3. The main water channel and the auxiliary water channel are respectively controlled, so that the heat management of the motor is more flexible, and the energy can be saved under the condition of light load of the axial flux permanent magnet motor.
Drawings
The invention has the following drawings:
the drawings are included to provide a better understanding of the invention and are not to be construed as unduly limiting the invention. Wherein:
FIG. 1 is a schematic view of the housing of the present invention with an auxiliary axial Z channel;
FIG. 2 is a schematic structural diagram of the outer housing of the present invention;
FIG. 3 is a schematic view of the construction of the inner housing with an auxiliary axial Z channel of the present invention;
FIG. 4 is a schematic view of the housing of the present invention with an auxiliary radial Z channel;
FIG. 5 is a schematic view of the construction of the inner housing with an auxiliary radial Z channel of the present invention;
FIG. 6 is a schematic structural diagram of a double-stator single-rotor axial flux permanent magnet motor according to the present invention;
FIG. 7 is a schematic view of the main channel water flow control of the present invention;
FIG. 8 is a schematic view of the auxiliary channel water flow control of the present invention;
FIG. 9 is a control logic diagram of the intelligent cooling control method of the present invention;
fig. 10 is a topological structure diagram of the intelligent cooling control method of the present invention.
Detailed Description
Embodiments of the present invention are explained in detail below with reference to the accompanying drawings. In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1-6, the present invention provides a water-cooled casing of an axial flux permanent magnet motor, which comprises an outer casing 101, an inner casing 102 and a main water channel cover plate 103;
as shown in fig. 1, the inner housing 102 is disposed at a rear side (also referred to as an inner side) of the outer housing 101, and the main waterway cover 103 is disposed at a front side (also referred to as an outer side) of the outer housing 101; the inner side is the side close to the stator core, and the outer side is the side far away from the stator core;
a main waterway is provided on the outer casing 101, and an auxiliary waterway is provided on the inner casing 102.
On the basis of the above technical solution, as shown in fig. 2, the outer casing 101 is cast by a casting process, the outer casing 101 is in an overall shape of an oblate column, and includes an outer annular wall 201 and an inner annular wall 202, a middle partition 203 is arranged between the outer annular wall 201 and the inner annular wall 202, and a first through hole 204 is arranged in the middle of the middle partition 203;
the middle partition 203 divides the space between the outer annular wall body 201 and the inner annular wall body 202 into a front recessed area and a rear recessed area;
a main water channel groove 105 is arranged in the front side concave area, and a plurality of layers of snakelike reciprocating main water channels are formed in the main water channel groove 105 along the circumferential direction;
in the front side recessed area, a circle of main waterway cover plate assembly holes 110 are respectively arranged along the outer ring wall body 201 and the inner ring wall body 202;
the rear recessed area is used for accommodating the inner housing 102;
a first cylinder, a second cylinder, a third cylinder and a fourth cylinder which are arranged in a rectangular shape are arranged on the outer surface of the outer machine shell 101, a main water channel water inlet 106 is formed in a shaft hole of the first cylinder, a main water channel water outlet 107 is formed in a shaft hole of the second cylinder, an auxiliary water channel water inlet 108 is formed in a shaft hole of the third cylinder, and an auxiliary water channel water outlet 109 is formed in a shaft hole of the fourth cylinder;
a main water channel water inlet 106 is communicated with a notch at one end of the main water channel, and a main water channel water outlet 107 is communicated with a notch at the other end of the main water channel;
the outer surface of the outer housing 101 is provided with a first winding leading-out groove 104, the first winding leading-out groove 104 is two rectangular grooves arranged at a certain distance, and the first winding leading-out groove 104 is communicated with the rear side concave area.
On the basis of the technical scheme, the outer surface of the outer casing 101 is provided with a plurality of semi-cylinders 205, the semi-cylinders 205 are protruded along the width direction of the outer casing 101, and outer casing assembling holes 111 are formed along the axial direction of the semi-cylinders 205; in the embodiment shown in fig. 1, 8 semi-cylinders 205 are equally spaced.
On the basis of the above technical solution, as shown in fig. 1 and 4, the main waterway cover plate 103 is in an annular plate-shaped structure, the inner diameter and the outer diameter of the main waterway cover plate 103 are adapted to the outer annular wall body 201 and the inner annular wall body 202, and the main waterway cover plate 103 is provided with a second through hole adapted to the main waterway cover plate assembly hole 110.
The second through hole of the main water channel cover plate 103 is matched with the main water channel cover plate assembling hole 110, and is used for detachably assembling the main water channel cover plate 103 in the front side recessed area and ensuring the closure of the main water channel.
On the basis of the above technical solution, as shown in fig. 3, the inner casing 102 is in a circular ring structure, the thickness of the inner casing 102 is adapted to the recess depth of the rear-side recess area, the outer diameter of the inner casing 102 is adapted to the diameter of the rear-side recess area, and the inner diameter of the inner casing 102 is adapted to the size of the stator core 3;
a second winding wire leading-out groove 214 is arranged on the inner housing 102, and the second winding wire leading-out groove 214 is matched with the first winding wire leading-out groove 104; namely: the second winding wire leading-out slot 214 is also two rectangular slots arranged at a certain distance;
an auxiliary water channel is formed on the outer surface of the inner casing 102, a water inlet 108 of the auxiliary water channel is communicated with a notch at one end of the auxiliary water channel, and a water outlet 109 of the auxiliary water channel is communicated with a notch at the other end of the auxiliary water channel.
On the basis of the technical scheme, the auxiliary water channels are divided into an auxiliary axial Z water channel and an auxiliary radial Z water channel;
as shown in fig. 3, the auxiliary axial Z-channel groove 112 forms an auxiliary channel by serpentine reciprocation in the axial direction;
as shown in fig. 5, the auxiliary radial Z-waterway groove 113 is formed to reciprocate in a serpentine shape in a circumferential direction.
The assembly process of the water-cooled casing of the axial flux permanent magnet motor comprises the following steps:
placing the inner case 102 in the rear recessed area of the outer case 101, aligning the second winding lead-out groove 214 with the first winding lead-out groove 104, and fitting the two (the inner case 102 and the outer case 101) by welding or bonding;
the second through holes of the main waterway cover plate 103 are aligned with the mounting holes 110 of the main waterway cover plate and screwed in for fixation.
The assembled outer casing 101, inner casing 102 and main water channel cover plate 103 form a front casing 1 or a rear casing 2, and the auxiliary water channels in the front casing 1 and the rear casing 2 all adopt the same auxiliary water channel structure, namely, all adopt auxiliary axial Z water channels or all adopt auxiliary radial Z water channels.
As shown in fig. 6, the present invention provides an axial flux permanent magnet motor, which includes a front casing 1 and a rear casing 2 of the aforementioned structure, wherein the axial flux permanent magnet motor adopts a double-stator single-rotor structure, and a temperature sensor 7 is provided in each of the double stators, and the axial flux permanent magnet motor specifically includes:
a stator core 3 provided with a temperature sensor 7, in the slot of which a stator winding 4 is wound;
the number of the stator cores 3 is two, one stator core is arranged in the front side machine shell 1 and is bonded with the inner machine shell 102 in the front side machine shell 1, and the other stator core is arranged in the rear side machine shell 2 and is bonded with the inner machine shell 102 in the rear side machine shell 2;
both ends of the winding wire of the stator core 3 are respectively led out from a first wire lead-out slot 104;
a rotor 5 with permanent magnets 6 is arranged between the two stator cores 3.
As shown in fig. 7, 8, 9 and 10, the present invention provides an intelligent cooling control method for an axial flux permanent magnet motor, where the axial flux permanent magnet motor is a double-stator single-rotor motor with the above structure, the water flow rates of the main water channel and the auxiliary water channel are adjusted according to the signal fed back by the temperature sensor 7, and the water flow rates of the main water channel and the auxiliary water channel are respectively adjusted.
On the basis of the above technical solution, as shown in fig. 7, the adjustment of the water flow rate of the main water channel includes:
the water flow of the main water channel is input by a temperature signal, and a water flow control signal of the main water channel is output after the temperature-water flow control and hysteresis comparison links of the main water channel;
the water flow control signal of the main water channel and the actually measured signal of the main water channel flow meter are differentiated to control the opening amplitude of the main water channel throttle valve, so that the flow of the main water channel is regulated;
as shown in fig. 8, the regulation of the flow rate of the auxiliary flume includes:
the water flow of the auxiliary water channel is input by a temperature signal, and a water flow control signal of the auxiliary water channel is output after the temperature-water flow control and hysteresis comparison links of the auxiliary water channel;
the water flow control signal of the auxiliary water channel and the actually measured signal of the auxiliary water channel flowmeter are differentiated to control the opening amplitude of the auxiliary water channel throttle valve, so that the flow of the auxiliary water channel is adjusted;
and carrying out difference on the sum of the main water channel and auxiliary water channel water flow control signals and the sum of the actual measurement flow meters of the main water channel and the auxiliary water channel to obtain the output requirement of the cooling water pump, and correspondingly controlling the total flow.
A specific control logic diagram can be seen in fig. 9, and a specific topology structure diagram can be seen in fig. 10.
The above description is only a specific embodiment of the present invention, but the protection of the present invention is not limited thereto, and any modification without substantial change made by those skilled in the art without changing the principle should also be considered as the protection scope of the present invention.
Those not described in detail in this specification are within the skill of the art.
Claims (10)
1. The water-cooled casing of the axial flux permanent magnet motor is characterized by comprising an outer casing (101), an inner casing (102) and a main water channel cover plate (103);
the inner shell (102) is arranged on the rear side of the outer shell (101), and the main water channel cover plate (103) is arranged on the front side of the outer shell (101);
the inner side is the side close to the stator core, and the outer side is the side far away from the stator core;
a main water channel is arranged on the outer machine shell (101), and an auxiliary water channel is arranged on the inner machine shell (102).
2. The water-cooled casing according to claim 1, wherein the outer casing (101) is cast by a casting process, the outer casing (101) is in an overall shape of an oblate cylinder and comprises an outer ring wall body (201) and an inner ring wall body (202), a middle partition plate (203) is arranged between the outer ring wall body (201) and the inner ring wall body (202), and a first through hole (204) is centrally arranged on the middle partition plate (203);
the middle partition plate (203) divides the space between the outer ring wall body (201) and the inner ring wall body (202) into a front side recessed area and a rear side recessed area;
a main water channel groove (105) is arranged in the front side concave area, and a plurality of layers of snake-shaped reciprocating main water channels are formed in the main water channel groove (105) along the circumferential direction;
in the front side recessed area, a circle of main water channel cover plate assembly holes (110) are respectively formed along the outer ring wall body (201) and the inner ring wall body (202);
the rear recessed area is used for accommodating an inner shell (102);
the outer surface of the outer machine shell (101) is provided with a first cylinder, a second cylinder, a third cylinder and a fourth cylinder which are arranged in a rectangular shape, a main water channel water inlet (106) is formed in a shaft hole of the first cylinder, a main water channel water outlet (107) is formed in a shaft hole of the second cylinder, an auxiliary water channel water inlet (108) is formed in a shaft hole of the third cylinder, and an auxiliary water channel water outlet (109) is formed in a shaft hole of the fourth cylinder;
a water inlet (106) of the main water channel is communicated with a notch at one end of the main water channel, and a water outlet (107) of the main water channel is communicated with a notch at the other end of the main water channel;
the outer surface of the outer shell (101) is provided with a first winding leading-out groove (104), the first winding leading-out groove (104) is two rectangular grooves which are arranged at a certain distance, and the first winding leading-out groove (104) is communicated with a rear side concave area.
3. The water-cooled casing according to claim 2, wherein the outer surface of the outer casing (101) is provided with a plurality of semi-cylinders (205), the semi-cylinders (205) are protruded along the width direction of the outer casing (101), and outer casing assembling holes (111) are provided along the axial direction of the semi-cylinders (205).
4. The water-cooled casing according to claim 2, wherein the main waterway cover plate (103) is of an annular plate structure, the inner and outer diameters of the main waterway cover plate (103) are adapted to the outer ring wall body (201) and the inner ring wall body (202), and the main waterway cover plate (103) is provided with a second through hole adapted to the main waterway cover plate mounting hole (110).
5. The water-cooled machine shell according to claim 2, characterized in that the inner machine shell (102) is of a circular ring structure, the thickness of the inner machine shell (102) is adapted to the depth of the recess of the rear side recess area, the outer diameter of the inner machine shell (102) is adapted to the diameter of the rear side recess area, and the inner diameter of the inner machine shell (102) is adapted to the size of the stator core (3);
a second winding lead-out groove (214) is arranged on the inner shell (102), and the second winding lead-out groove (214) is matched with the first winding lead-out groove (104);
an auxiliary water channel is arranged on the outer surface of the inner machine shell (102), a water inlet (108) of the auxiliary water channel is communicated with a notch at one end of the auxiliary water channel, and a water outlet (109) of the auxiliary water channel is communicated with a notch at the other end of the auxiliary water channel.
6. The water-cooled cabinet according to claim 5, wherein the auxiliary water channels are divided into two types, auxiliary axial Z water channels and auxiliary radial Z water channels;
the auxiliary axial Z-shaped water channel groove (112) reciprocates in a snake shape along the axial direction to form an auxiliary water channel;
the auxiliary radial Z-shaped water channel groove (113) is in snake-shaped reciprocating along the circumferential direction to form an auxiliary water channel.
7. An axial flux permanent magnet motor, characterized by comprising a front side casing (1) and a rear side casing (2), wherein the front side casing (1) and the rear side casing (2) are the same and both adopt the water-cooled casing structure of any one of claims 1 to 6;
the axial flux permanent magnet motor adopts a double-stator single-rotor structure, and matched temperature sensors (7) are arranged in the double stators.
8. The axial flux permanent magnet machine of claim 7, specifically comprising:
a stator core (3) provided with a matched temperature sensor (7), and a stator winding (4) is wound in a slot of the stator core;
the number of the stator cores (3) is two, one stator core is arranged in the front side machine shell (1) and is bonded with the inner machine shell (102) in the front side machine shell (1), and the other stator core is arranged in the rear side machine shell (2) and is bonded with the inner machine shell (102) in the rear side machine shell (2);
two ends of a winding wire of the stator core (3) are respectively led out from a first winding wire leading-out groove (104);
a rotor (5) with a permanent magnet (6) is arranged between the two stator cores (3).
9. An intelligent cooling control method for an axial flux permanent magnet motor, characterized in that the axial flux permanent magnet motor is a double-stator single-rotor motor according to any one of claims 7 to 8;
the water flow rates of the main water channel and the auxiliary water channel are adjusted according to signals fed back by the temperature sensor (7), and the water flow rates of the main water channel and the auxiliary water channel are respectively adjusted.
10. The intelligent cooling control method of claim 9, wherein the adjustment of the flow rate of water in the main water channel comprises:
the water flow of the main water channel is input by a temperature signal, and a water flow control signal of the main water channel is output after the temperature-water flow control and hysteresis comparison links of the main water channel;
the water flow control signal of the main water channel and the actually measured signal of the main water channel flow meter are differentiated to control the opening amplitude of the main water channel throttle valve, so that the flow of the main water channel is regulated;
the regulation of the water flow rate of the auxiliary flume comprises:
the water flow of the auxiliary water channel is input by a temperature signal, and a water flow control signal of the auxiliary water channel is output after the temperature-water flow control and hysteresis comparison links of the auxiliary water channel;
the water flow control signal of the auxiliary water channel and the actually measured signal of the auxiliary water channel flowmeter are differentiated to control the opening amplitude of the auxiliary water channel throttle valve, so that the flow of the auxiliary water channel is adjusted;
and carrying out difference on the sum of the main water channel and auxiliary water channel water flow control signals and the sum of the actual measurement flow meters of the main water channel and the auxiliary water channel to obtain the output requirement of the cooling water pump, and correspondingly controlling the total flow.
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