CN112087092B - Partitioned permanent magnet motor water cooling structure - Google Patents

Partitioned permanent magnet motor water cooling structure Download PDF

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Publication number
CN112087092B
CN112087092B CN202010945415.1A CN202010945415A CN112087092B CN 112087092 B CN112087092 B CN 112087092B CN 202010945415 A CN202010945415 A CN 202010945415A CN 112087092 B CN112087092 B CN 112087092B
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station
cooling branch
cooling
flow
flow channel
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CN112087092A (en
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王福杰
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Shandong Depuda Electric Motor Co ltd
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Shandong Depuda Electric Motor Co ltd
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Priority to CN202210562429.4A priority patent/CN114865849A/en
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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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/08—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks
    • F16K11/085—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only taps or cocks with cylindrical plug
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/64—Electric machine technologies in electromobility

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

The invention relates to a partition type permanent magnet motor water cooling structure, which comprises: a helical cooling pipeline arranged in the shell, wherein the cooling pipeline is positioned at the periphery of the rotor; the cooling pipeline comprises a plurality of cooling branches connected in parallel, the cooling branches are sequentially arranged along the axial direction of the shell, and two ends of each cooling branch are respectively collected through the first flow channel and the second flow channel. The first flow channel is provided with a rotatable liquid distributing valve, the liquid distributing valve comprises a liquid distributing cylinder positioned in the first flow channel and a circular truncated cone positioned outside the first flow channel, and the liquid distributing valve is connected with the first flow channel in a sealing manner; the lateral wall of the liquid separation barrel is provided with a plurality of penetrating liquid separation ports, and when different liquid separation ports are rotated to coincide with the flow holes, the first flow channel is communicated with the cooling branch corresponding to the flow holes. It can carry out the cooling thermoregulation of local region to the motor to realize balanced cooling and simple structure, convenient operation.

Description

Partitioned permanent magnet motor water cooling structure
Technical Field
The invention relates to the technical field of motors, in particular to a partitioned permanent magnet motor water cooling structure.
Background
The permanent magnet motor provides excitation by the permanent magnet, so that the motor has a simpler structure, the processing and assembly cost is reduced, a collecting ring and an electric brush which are easy to cause problems are omitted, and the running reliability of the motor is improved; and because excitation current is not needed, excitation loss is avoided, and the efficiency and the power density of the motor are improved.
The permanent magnet motor is composed of a stator, a rotor, an end cover and the like. The stator is basically the same as a common induction motor, and a lamination structure is adopted to reduce iron loss during the operation of the motor. The rotor can be made into solid or laminated by lamination. The armature winding can adopt a concentrated whole-pitch winding, and can also adopt a distributed short-pitch winding and an unconventional winding.
Some permanent-magnet machine that have now can produce a large amount of heats in the use, and a large amount of heats can reduce the life-span and the work efficiency of motor, and current motor generally is through fixing the fin of a certain quantity on the motor outer wall to dispel the heat to the motor.
In the use of the motor, the motor is generally in a relatively closed environment, air in the environment is relatively not circulated, and heat generated by the heat radiating fins on the outer wall of the motor is not timely dissipated, so that the motor is damaged.
In order to solve the above problems, in the prior art, a flow channel is formed in a motor housing, and a motor is cooled by using cooling water. Above-mentioned runner only can carry out the integral cooling to the motor, can't carry out solitary cooling to the subregion of difference, because the motor operation, the calorific capacity in different regions is different, so can lead to the temperature difference of the different regions of motor great, some regional temperature is lower, and some regional temperature is higher, can't realize balanced cooling.
Disclosure of Invention
In order to solve the technical problems in the background art, the invention provides a partitioned permanent magnet motor water cooling structure which can cool and regulate the temperature of a local area of a motor, so that balanced cooling is realized, the structure is simple, and the operation is convenient.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a partition type permanent magnet motor water cooling structure comprises:
a helical cooling pipeline arranged in the shell, wherein the cooling pipeline is positioned at the periphery of the rotor;
the cooling pipeline comprises a plurality of cooling branches connected in parallel, the cooling branches are sequentially arranged along the axial direction of the shell, and two ends of each cooling branch are respectively collected through the first flow channel and the second flow channel.
Furthermore, the cooling pipeline comprises a first cooling branch, a second cooling branch and a third cooling branch which are sequentially arranged along the axial direction of the shell, the second cooling branch is located in the middle of the shell, and the first cooling branch and the third cooling branch are located on the front side and the rear side of the second cooling branch.
Further, the first flow channel is respectively communicated with the first cooling branch, the second cooling branch and the third cooling branch through flow holes;
the first flow channel is provided with a rotatable liquid distribution valve, the liquid distribution valve comprises a liquid distribution cylinder positioned in the first flow channel and a circular truncated cone positioned outside the first flow channel, and the liquid distribution valve is connected with the first flow channel in a sealing manner;
the side wall of the liquid separation barrel is provided with a plurality of penetrating liquid separation ports, and when different liquid separation ports are rotated to be overlapped with the flow holes, the first flow channel is communicated with the cooling branch corresponding to the flow holes.
Furthermore, the periphery of the circular truncated cone is provided with worm teeth, a rotatable worm is arranged in the shell, and the worm is in meshing transmission with the circular truncated cone.
Further, the liquid separation cylinder is divided into 8 stations;
when the O station is superposed with the flow hole, all cooling branches are closed;
when the station A is superposed with the flow hole, only the first cooling branch is completely communicated with the first flow passage;
when the station B is superposed with the flow hole, the first cooling branch and the second cooling branch are completely communicated with the first flow passage;
when the station C is superposed with the flow hole, only the second cooling branch is completely communicated with the first flow passage;
when the station D is superposed with the flow hole, the second cooling branch and the third cooling branch are completely communicated with the first flow channel;
when the station E is superposed with the flow hole, only the third cooling branch is completely communicated with the first flow passage;
when the station F is superposed with the flow hole, the first cooling branch and the third cooling branch are completely communicated with the first flow passage;
when the G station is coincident with the flow holes, all cooling branches are fully communicated with the first flow passage.
Further, the liquid separation cylinder is divided into 10 stations;
when the O station is superposed with the flow hole, all cooling branches are closed;
when the station A is superposed with the flow hole, only the first cooling branch is completely communicated with the first flow channel, and the opening degree of the first cooling branch is gradually increased in the process that the station O is switched to the station A;
when the station B coincides with the flow hole, the first cooling branch and the second cooling branch are completely communicated with the first flow channel, the opening degree of the first cooling branch is kept to be maximum and the opening degree of the second cooling branch is gradually increased in the process that the station A is transferred to the station B;
when the station C is superposed with the flow hole, only the second cooling branch is completely communicated with the first flow channel, and in the process that the station B is switched to the station C, the opening degree of the first cooling branch is gradually reduced, and the opening degree of the second cooling branch is kept to be maximum;
when the station D coincides with the flow hole, the second cooling branch and the third cooling branch are completely communicated with the first flow channel, the opening degree of the second cooling branch is kept to be maximum in the process that the station C is transferred to the station D, and the opening degree of the third cooling branch is gradually increased;
when the station E is superposed with the flow hole, only the third cooling branch is completely communicated with the first flow channel, and in the process that the station D is switched to the station E, the opening degree of the third cooling branch is kept to be maximum, and the opening degree of the second cooling branch is gradually reduced;
when the station F is superposed with the flow holes, all cooling branches are closed, and the opening degree of the third cooling branch is gradually reduced in the process that the station E is transferred to the station F;
when the station G coincides with the flow hole, the first cooling branch and the third cooling branch are completely communicated with the first flow channel, and the opening degrees of the first cooling branch and the third cooling branch are gradually increased in the process that the station F is transferred to the station G;
when the station G is shifted to the station H, the opening degrees of the first cooling branch and the third cooling branch are kept to be the largest, and the opening degree of the second cooling branch is gradually increased;
when the station I coincides with the flow hole, only the second cooling branch is completely communicated with the first flow channel, and in the process that the station H is transferred to the station I, the opening degrees of the first cooling branch and the third cooling branch are gradually reduced, and the opening degree of the second cooling branch is kept to be the maximum; and in the process of transferring the station I to the station O, the opening degree of the second cooling branch is gradually reduced.
A valve, comprising:
the liquid separation valve is rotatably arranged on the first flow channel, a plurality of flow holes are formed in the side wall of the first flow channel, the liquid separation valve comprises a liquid separation barrel positioned in the first flow channel and a circular truncated cone positioned outside the first flow channel, and the liquid separation valve is in sealing connection with the first flow channel; the lateral wall of the liquid separation barrel is provided with a plurality of penetrating liquid separation ports, and when different liquid separation ports are rotated to coincide with the flow holes, the first flow channel is communicated with the cooling branch corresponding to the flow holes.
Further, the liquid separation cylinder is divided into 8 stations;
when the O station is coincident with the flow holes, all cooling branches are closed;
when the station A is coincided with the flow hole, only the first cooling branch is completely communicated with the first flow channel;
when the station B is superposed with the flow hole, the first cooling branch and the second cooling branch are completely communicated with the first flow passage;
when the station C is superposed with the flow hole, only the second cooling branch is completely communicated with the first flow passage;
when the station D is coincided with the flow hole, the second cooling branch and the third cooling branch are completely communicated with the first flow channel;
when the station E is superposed with the flow hole, only the third cooling branch is completely communicated with the first flow passage;
when the station F is superposed with the flow hole, the first cooling branch and the third cooling branch are completely communicated with the first flow passage;
when the G station is coincident with the flow holes, all cooling branches are fully communicated with the first flow passage.
Further, the liquid separation cylinder is divided into 10 stations;
when the O station is superposed with the flow hole, all cooling branches are closed;
when the station A is superposed with the flow hole, only the first cooling branch is completely communicated with the first flow channel, and the opening degree of the first cooling branch is gradually increased in the process that the station O is switched to the station A;
when the station B coincides with the flow hole, the first cooling branch and the second cooling branch are completely communicated with the first flow channel, the opening degree of the first cooling branch is kept to be maximum and the opening degree of the second cooling branch is gradually increased in the process that the station A is transferred to the station B;
when the station C is superposed with the flow hole, only the second cooling branch is completely communicated with the first flow channel, and in the process that the station B is switched to the station C, the opening degree of the first cooling branch is gradually reduced, and the opening degree of the second cooling branch is kept to be maximum;
when the station D coincides with the flow hole, the second cooling branch and the third cooling branch are completely communicated with the first flow channel, the opening degree of the second cooling branch is kept to be maximum in the process that the station C is transferred to the station D, and the opening degree of the third cooling branch is gradually increased;
when the station E is superposed with the flow hole, only the third cooling branch is completely communicated with the first flow channel, and in the process that the station D is switched to the station E, the opening degree of the third cooling branch is kept to be maximum, and the opening degree of the second cooling branch is gradually reduced;
when the station F is superposed with the flow holes, all cooling branches are closed, and the opening degree of the third cooling branch is gradually reduced in the process that the station E is transferred to the station F;
when the station G coincides with the flow hole, the first cooling branch and the third cooling branch are completely communicated with the first flow channel, and the opening degrees of the first cooling branch and the third cooling branch are gradually increased in the process that the station F is transferred to the station G;
when the H station is superposed with the flow holes, all the cooling branches are completely communicated with the first flow channel, and in the process that the G station is switched to the H station, the opening degrees of the first cooling branch and the third cooling branch are kept to be maximum, and the opening degree of the second cooling branch is gradually increased;
when the station I coincides with the flow hole, only the second cooling branch is completely communicated with the first flow channel, and in the process that the station H is switched to the station I, the opening degrees of the first cooling branch and the third cooling branch are gradually reduced, and the opening degree of the second cooling branch is kept to be the maximum; and in the process of transferring the station I to the station O, the opening degree of the second cooling branch is gradually reduced.
A method of cooling an electric machine comprising the steps of:
a. screwing the liquid separating valve to an H station, wherein the flow rates of the first cooling branch, the second cooling branch and the third cooling branch are the same, respectively measuring the temperatures of the front, middle and rear three subareas of the shell, and if the temperatures of the front, middle and rear three subareas are basically equal, keeping the liquid separating valve at the H station;
b. if the temperature of three subregion areas in the front, middle and back has local high temperature, rotate the liquid separating valve, adjust the opening of each cooling branch road in the front, middle and back, specifically include:
b1. when the temperature of the area of the shell corresponding to the first cooling branch is overhigh:
b11. finely adjusting the liquid separating valve between the H station and the G station, and if the temperature of the front, middle and rear three subareas is basically equal, keeping the state;
b12. if the temperature of the area of the shell corresponding to the first cooling branch is still too high, the liquid separating valve is switched to the station A to be overlapped with the flow hole, fine adjustment is carried out between the station A and the station B until the temperature of the front, middle and rear sub-areas is basically equal, and the state is kept;
b2. when the temperature of the region of the shell corresponding to the second cooling branch is overhigh:
b21. finely adjusting the liquid separating valve between the H station and the I station until the temperatures of the front, middle and rear three subareas are basically equal, and keeping the state;
b3. when the temperature of the region of the shell corresponding to the third cooling branch is highest:
b31. finely adjusting the liquid separating valve between the H station and the G station, and if the temperature of the front, middle and rear three subareas is basically equal, keeping the state;
b32. if the temperature of the region of the shell corresponding to the third cooling branch is still too high, the liquid separating valve is switched to the E station to be overlapped with the flow hole, fine adjustment is carried out between the D station and the E station until the temperature of the front, middle and rear three sub-regions is basically equal, and the state is kept.
The invention has the beneficial effects that:
(1) divide into the cooling branch road that a plurality of is parallelly connected to every cooling branch road all can the independent control switching, thereby can carry out regional cooling thermoregulation of local to the motor, thereby realize the equilibrium cooling.
(2) The opening and closing and combination of the three cooling branches and flow regulation can be controlled through a single valve, the structure is simpler, and the operation is more convenient.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an external view of the present invention;
FIG. 3 is a schematic diagram of the cooling circuit of the present invention;
FIG. 4 is a schematic view of the construction of the dispensing device of the present invention;
FIG. 5 is a schematic structural view of a dispensing valve of the present invention;
FIG. 6 is an expanded view of a first embodiment of a dispensing valve of the present invention;
FIG. 7 is an expanded view of a second embodiment of a dispensing valve of the present invention;
fig. 8 is a schematic structural view of a third embodiment of the dispensing valve of the present invention.
In the figure:
1. the cooling system comprises a shell, 2. a rotor, 3. a cooling pipeline, 4. a first flow passage, 5. a second flow passage, 6. a liquid separating valve and 7. a worm
301. First cooling branch 302, second cooling branch 303, third cooling branch
401. The flow-through hole is provided with a flow hole,
601. liquid separation port, 602, liquid separation cylinder, 603 and round table.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1-2, a partition type permanent magnet motor water cooling structure includes: and a spiral cooling pipe 3 provided in the casing 1, the cooling pipe 3 being located on the outer periphery of the rotor 2. The cooling pipeline 3 comprises a plurality of cooling branches connected in parallel, the cooling branches are sequentially arranged along the axial direction of the shell 1, and two ends of the cooling branches are respectively collected through a first flow passage 4 and a second flow passage 5. And in order to ensure that the cooling water in the first flow passage 4 and the second flow passage 5 can be uniformly divided, the drift diameter and the flow passage length of each cooling branch are equal.
As shown in fig. 3, the cooling pipeline 3 includes a first cooling branch 301, a second cooling branch 302 and a third cooling branch 303 sequentially arranged along the axial direction of the outer shell 1, the second cooling branch 302 is located in the middle of the outer shell 1, the first cooling branch 301 and the third cooling branch 303 are located at the front side and the rear side of the second cooling branch 302, and the first cooling branch 301, the second cooling branch 302 and the third cooling branch 303 can individually cool the local region of the shell 1 where the first cooling branch 301, the second cooling branch 302 and the third cooling branch 303 are located. And, corresponding temperature sensors are arranged in local areas where the first cooling branch 301, the second cooling branch 302 and the third cooling branch 303 are located, so as to monitor the temperature.
Further, the first flow channel 4 is provided with 3 flow holes 401 arranged along the axial direction thereof, and the flow holes 401 correspond to the first cooling branch 301, the second cooling branch 302 and the third cooling branch 303 respectively, and the first flow channel 4 is communicated with the first cooling branch 301, the second cooling branch 302 and the third cooling branch 303 through the flow holes 401. The first flow passage 4 is provided with a rotatable liquid-separating valve 6.
As shown in fig. 4-5, the liquid separation valve 6 includes a liquid separation cylinder 602 located inside the first flow channel 4 and a circular truncated cone 603 located outside the first flow channel 4, and the liquid separation valve 6 and the first flow channel 4 are hermetically connected by a sealing ring or the like. A plurality of penetrating liquid separating ports 601 are formed in different positions of the side wall of the liquid separating cylinder 602, and when different liquid separating ports 601 are rotated to coincide with the flow holes 401, the first flow channel 4 is communicated with the cooling branch corresponding to the flow holes 401, so that circulation of cooling water is realized.
As shown in fig. 8, in order to realize more accurate adjustment of the dispensing valve 6, the periphery of the circular truncated cone 603 is provided with worm teeth, a rotatable worm 7 is arranged in the housing 1, and the worm 7 is in meshing transmission with the circular truncated cone 603. The rotary table 603 can be driven to rotate by rotating the worm 7. Through above worm gear mechanism can realize speed reduction to the realization is to the accurate regulation of liquid distribution valve 6, and worm gear mechanism has the function of auto-lock, prevents that unexpected rotation from appearing in the operation in-process, liquid distribution valve 6.
In specific implementation, the liquid separation valve 6 can realize different functions through different arrangement modes of the liquid separation ports 601, and two arrangement modes of the liquid separation ports are described in detail below.
Example 1
As shown in fig. 6, the liquid separation cylinder 602 is divided into 8 stations, i.e., an O station and a-G stations. The uppermost liquid separation port 601 can be rotated to coincide with the first cooling branch 301, the intermediate liquid separation port 601 can be rotated to coincide with the second cooling branch 302, and the lowermost liquid separation port 601 can be rotated to coincide with the third cooling branch 303.
When the O-station coincides with the flow hole 401, all cooling branches are closed because there is no liquid separation port 601 at the O-station.
When the a-station coincides with the flow hole 401, the first cooling branch 301 is completely communicated with the first flow passage 4 due to the liquid-dividing port 601 at the upper portion of the a-station.
When the B station coincides with the flow hole 401, the first cooling branch 301 and the second cooling branch 302 are completely communicated with the first flow channel 4 due to the liquid separation port 601 at the upper portion and the middle portion of the B station.
When the C station coincides with the flow hole 401, only the second cooling branch 302 is in full communication with the first flow passage 4 due to the liquid separation port 601 in the middle at the C station.
When the D-station coincides with the flow hole 401, the second cooling branch 302 and the third cooling branch 303 are completely communicated with the first flow passage 4 due to the liquid-dividing ports 601 at the middle and lower portions of the D-station.
When the E-station coincides with the flow hole 401, only the third cooling branch 303 is in full communication with the first flow passage 4 because of the liquid-dividing port 601 at the lower portion of the E-station.
When the F-station coincides with the flow hole 401, the first cooling branch 301 and the third cooling branch 303 are completely communicated with the first flow passage 4 due to the liquid-dividing ports 601 at the upper and lower portions of the F-station.
When the G station coincides with the flow hole 401, all the cooling branches are completely communicated with the first flow passage 4 due to the liquid-dividing ports 601 at the upper, middle and lower portions of the G station.
Example 2
As shown in fig. 7, the liquid separation cylinder 602 is divided into 10 stations, i.e., an O station and an a-I station. The uppermost liquid separation port 601 can be rotated to coincide with the first cooling branch 301, the intermediate liquid separation port 601 can be rotated to coincide with the second cooling branch 302, and the lowermost liquid separation port 601 can be rotated to coincide with the third cooling branch 303.
When the O-station coincides with the flow orifice 401, all cooling branches are closed because there is no tap 601 at the O-station.
When the station a coincides with the flow hole 401, only the first cooling branch 301 is completely communicated with the first flow channel 4 due to the liquid separation port 601 at the upper part of the station a, and the opening degree of the first cooling branch 301 gradually increases in the process of transferring the station O to the station a.
When the station B coincides with the flow hole 401, the liquid separation ports 601 are formed in the upper portion and the middle portion of the station B, so that the first cooling branch 301 and the second cooling branch 302 are completely communicated with the first flow channel 4, and the opening degree of the first cooling branch 301 is maintained to be maximum and the opening degree of the second cooling branch 302 is gradually increased in the process of transferring the station a to the station B.
When the station C coincides with the flow hole 401, only the second cooling branch 302 is completely communicated with the first flow channel 4 due to the liquid separation port 601 in the middle of the station C, and the opening degree of the first cooling branch 301 is gradually reduced and the opening degree of the second cooling branch 302 is kept maximum during the process of transferring the station B to the station C.
When the D station coincides with the flow hole 401, the liquid separation ports 601 are formed in the middle and the lower portion of the D station, so that the second cooling branch 302 and the third cooling branch 303 are completely communicated with the first flow passage 4, and the opening degree of the second cooling branch 302 is maintained to be maximum and the opening degree of the third cooling branch 303 is gradually increased in the process of transferring the C station to the D station.
When the station E coincides with the flow hole 401, only the third cooling branch 303 is completely communicated with the first flow channel 4 due to the liquid separation port 601 at the lower part of the station E, and the opening degree of the third cooling branch 303 is kept to be maximum and the opening degree of the second cooling branch 302 is gradually reduced in the process of transferring the station D to the station E.
When the station F coincides with the flow hole 401, all cooling branches are closed because the liquid separation port 601 is not arranged at the station O, and the opening degree of the third cooling branch 303 is gradually reduced in the process of transferring the station E to the station F.
When the G station coincides with the flow hole 401, the first cooling branch 301 and the third cooling branch 303 are completely communicated with the first flow channel 4 due to the liquid separation ports 601 at the upper part and the lower part of the G station, and the opening degrees of the first cooling branch 301 and the third cooling branch 303 are gradually increased in the process of transferring the F station to the G station.
When the H station coincides with the flow hole 401, since the liquid separation ports 601 are formed at the upper, middle and lower portions of the H station, all the cooling branches are completely communicated with the first flow passage 4, and the opening degrees of the first cooling branch 301 and the third cooling branch 303 are maintained to be maximum and the opening degree of the second cooling branch 302 is gradually increased in the process of transferring the G station to the H station.
When the station I coincides with the flow hole 401, only the second cooling branch 302 is completely communicated with the first flow channel 4 due to the liquid separation port 601 in the middle of the station I, and the opening degrees of the first cooling branch 301 and the third cooling branch 303 are gradually reduced and the opening degree of the second cooling branch 302 is kept maximum in the process of transferring the station H to the station I. During the process of the station I to the station O, the opening degree of the second cooling branch 302 is gradually reduced.
A motor cooling method will be specifically described based on the structure of the liquid separation valve in embodiment 2.
a. And screwing the liquid distribution valve 6 to an H station, wherein the flow rates of the first cooling branch 301, the second cooling branch 302 and the third cooling branch 303 are the same, the temperatures of the front, middle and rear three subareas of the shell 1 are respectively measured, and if the temperatures of the front, middle and rear three subareas are basically equal, the liquid distribution valve 6 is kept at the H station.
b. If the temperatures of the front, middle and rear three sub-areas are locally too high, the liquid separating valve 6 needs to be rotated to adjust the opening degree of each front, middle and rear cooling branch, and the flow of the cooling water in each cooling branch is distributed to perform targeted adjustment, which specifically comprises the following steps:
b1. when the temperature of the region of the housing 1 corresponding to the first cooling branch 301 is too high:
b11. the liquid dividing valve 6 is finely adjusted between the H station and the G station, at this time, the opening degree of the first cooling branch 301 and the third cooling branch 303 is maximum, the opening degree of the second cooling branch 302 is reduced, and more cooling water flows into the first cooling branch 301 and the third cooling branch 303, so that the temperature of the local area of the shell 1 corresponding to the first cooling branch 301 and the third cooling branch 303 is reduced, and if the temperature of the front, middle and rear three sub-areas can be adjusted to be basically equal, the state is maintained.
b12. If the temperature of the region of the outer shell 1 corresponding to the first cooling branch 301 is still too high, the liquid dividing valve 6 is switched to the position a to be overlapped with the flow hole 401, fine adjustment is performed between the position a and the position B, at this time, the third cooling branch 303 is closed, the opening degree of the first cooling branch 301 is kept at the maximum, the opening degree of the second cooling branch 302 is changed between the closing state and the maximum state, and more cooling water flows into the first cooling branch 301, so that the temperature of the local region of the outer shell 1 corresponding to the first cooling branch 301 is reduced until the temperatures of the front, middle and rear three sub-regions are adjusted to be substantially equal, and the state is kept.
b2. When the temperature of the region of the housing 1 corresponding to the second cooling branch 302 is too high:
b21. the liquid dividing valve 6 is finely adjusted between the H station and the I station, at this time, the opening degree of the second cooling branch 302 is the largest, the opening degrees of the first cooling branch 301 and the third cooling branch 303 are reduced, more cooling water flows into the second cooling branch 302, and therefore the temperature of the local area of the shell 1 corresponding to the second cooling branch 302 is reduced until the temperatures of the front, middle and rear three sub-areas are adjusted to be basically equal, and the state is kept.
b3. When the temperature of the region of the housing 1 corresponding to the third cooling branch 303 is highest:
b31. the liquid separating valve 6 is finely adjusted between the H station and the G station, at this time, the opening degrees of the first cooling branch 301 and the third cooling branch 303 are maximum, the opening degree of the second cooling branch 302 is changed between closing and maximum, and more cooling water flows into the first cooling branch 301 and the third cooling branch 303, so that the temperatures of the local regions of the shell 1 corresponding to the first cooling branch 301 and the third cooling branch 303 are reduced, and if the temperatures of the front, middle and rear three sub-regions can be adjusted to be substantially equal, the state is maintained.
b32. If the temperature of the region of the outer shell 1 corresponding to the third cooling branch 303 is still too high, the liquid dividing valve 6 is switched to the position E to be overlapped with the flow hole 401, fine adjustment is performed between the position D and the position E, at this time, the first cooling branch 301 is closed, the opening degree of the third cooling branch 303 is kept maximum, the opening degree of the second cooling branch 302 is changed between the closing state and the maximum, more cooling water flows into the third cooling branch 303, and therefore the temperature of the local region of the outer shell 1 corresponding to the third cooling branch 303 is reduced until the temperature of the front, middle and rear three sub-regions is adjusted to be basically equal, and the state is kept.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.

Claims (5)

1. The utility model provides a zoned permanent magnet motor water cooling structure which characterized in that includes:
the spiral cooling pipeline (3) is arranged in the shell (1), and the cooling pipeline (3) is positioned on the periphery of the rotor (2);
the cooling pipeline (3) comprises a plurality of cooling branches which are connected in parallel, the cooling branches are sequentially arranged along the axial direction of the shell (1), and two ends of each cooling branch are respectively collected through a first flow passage (4) and a second flow passage (5);
the cooling pipeline (3) comprises a first cooling branch (301), a second cooling branch (302) and a third cooling branch (303) which are sequentially arranged along the axial direction of the shell (1), the second cooling branch (302) is positioned in the middle of the shell (1), and the first cooling branch (301) and the third cooling branch (303) are positioned at the front side and the rear side of the second cooling branch (302);
the first flow channel (4) is respectively communicated with the first cooling branch (301), the second cooling branch (302) and the third cooling branch (303) through a plurality of flow holes (401);
the first flow channel (4) is provided with a rotatable liquid distributing valve (6), the liquid distributing valve (6) comprises a liquid distributing cylinder (602) positioned inside the first flow channel (4) and a circular truncated cone (603) positioned outside the first flow channel (4), and the liquid distributing valve (6) is connected with the first flow channel (4) in a sealing mode;
the side wall of the liquid separation cylinder (602) is provided with a plurality of penetrating liquid separation ports (601), and when different liquid separation ports (601) are rotated to coincide with the flow holes (401), the first flow channel (4) is communicated with the cooling branch corresponding to the flow holes (401);
the liquid separation cylinder (602) is divided into 8 stations;
when the O station is coincident with the flow hole (401), all cooling branches are closed;
when the station A is superposed with the flow hole (401), only the first cooling branch (301) is completely communicated with the first flow channel (4);
when the station B is superposed with the flow hole (401), the first cooling branch (301) and the second cooling branch (302) are completely communicated with the first flow passage (4);
when the station C is superposed with the flow hole (401), only the second cooling branch (302) is completely communicated with the first flow passage (4);
when the D station is overlapped with the flow hole (401), the second cooling branch (302) and the third cooling branch (303) are completely communicated with the first flow passage (4);
when the station E is coincided with the flow hole (401), only the third cooling branch (303) is completely communicated with the first flow channel (4);
when the station F is superposed with the flow hole (401), the first cooling branch (301) and the third cooling branch (303) are completely communicated with the first flow passage (4);
when the G station is superposed with the flow hole (401), all cooling branches are completely communicated with the first flow passage (4).
2. The water cooling structure of a zoned permanent magnet motor according to claim 1,
the periphery of the circular truncated cone (603) is provided with worm teeth, a rotatable worm (7) is arranged in the shell (1), and the worm (7) is in meshing transmission with the circular truncated cone (603).
3. The water cooling structure of a zoned permanent magnet motor according to claim 1,
the liquid separation cylinder (602) is divided into 10 stations;
when the O station is superposed with the flow hole (401), all cooling branches are closed;
when the station A is superposed with the flow hole (401), only the first cooling branch (301) is completely communicated with the first flow channel (4), and the opening degree of the first cooling branch (301) is gradually increased in the process that the station O is transferred to the station A;
when the station B is superposed with the flow hole (401), the first cooling branch (301) and the second cooling branch (302) are completely communicated with the first flow channel (4), and in the process that the station A is transferred to the station B, the opening degree of the first cooling branch (301) is kept to be maximum, and the opening degree of the second cooling branch (302) is gradually increased;
when the station C is superposed with the flow hole (401), only the second cooling branch (302) is completely communicated with the first flow channel (4), and in the process that the station B is transferred to the station C, the opening degree of the first cooling branch (301) is gradually reduced, and the opening degree of the second cooling branch (302) is kept to be maximum;
when the station D is superposed with the flow hole (401), the second cooling branch (302) and the third cooling branch (303) are completely communicated with the first flow channel (4), and in the process that the station C is transferred to the station D, the opening degree of the second cooling branch (302) is kept to be maximum, and the opening degree of the third cooling branch (303) is gradually increased;
when the station E is superposed with the flow hole (401), only the third cooling branch (303) is completely communicated with the first flow channel (4), and in the process that the station D is transferred to the station E, the opening degree of the third cooling branch (303) is kept to be maximum, and the opening degree of the second cooling branch (302) is gradually reduced;
when the station F is superposed with the flow holes (401), all cooling branches are closed, and the opening degree of the third cooling branch (303) is gradually reduced in the process that the station E is switched to the station F;
when the station G is overlapped with the flow hole (401), the first cooling branch (301) and the third cooling branch (303) are completely communicated with the first flow channel (4), and the opening degrees of the first cooling branch (301) and the third cooling branch (303) are gradually increased in the process that the station F is transferred to the station G;
when the H station is superposed with the flow hole (401), all the cooling branches are completely communicated with the first flow channel (4), and in the process that the G station is switched to the H station, the opening degrees of the first cooling branch (301) and the third cooling branch (303) are kept to be maximum, and the opening degree of the second cooling branch (302) is gradually increased;
when the station I coincides with the flow hole (401), only the second cooling branch (302) is completely communicated with the first flow channel (4), and in the process that the station H is transferred to the station I, the opening degrees of the first cooling branch (301) and the third cooling branch (303) are gradually reduced, and the opening degree of the second cooling branch (302) is kept maximum; and in the process of switching the station I to the station O, the opening degree of the second cooling branch (302) is gradually reduced.
4. A valve, comprising:
the liquid separating valve (6) is rotatably arranged on the first flow channel (4), a plurality of flow holes (401) are formed in the side wall of the first flow channel (4), the liquid separating valve (6) comprises a liquid separating cylinder (602) located inside the first flow channel (4) and a circular truncated cone (603) located outside the first flow channel (4), and the liquid separating valve (6) is connected with the first flow channel (4) in a sealing mode; the side wall of the liquid separation cylinder (602) is provided with a plurality of penetrating liquid separation ports (601), and when different liquid separation ports (601) are rotated to coincide with the flow holes (401), the first flow channel (4) is communicated with the cooling branch corresponding to the flow holes (401);
the liquid separation cylinder (602) is divided into 8 stations;
when the O station is superposed with the flow hole (401), all cooling branches are closed;
when the station A is coincided with the flow hole (401), only the first cooling branch (301) is completely communicated with the first flow channel (4);
when the station B is superposed with the flow hole (401), the first cooling branch (301) and the second cooling branch (302) are completely communicated with the first flow passage (4);
when the station C is superposed with the flow hole (401), only the second cooling branch (302) is completely communicated with the first flow passage (4);
when the D station is overlapped with the flow hole (401), the second cooling branch (302) and the third cooling branch (303) are completely communicated with the first flow passage (4);
when the station E is superposed with the flow hole (401), only the third cooling branch (303) is completely communicated with the first flow passage (4);
when the station F is coincided with the flow hole (401), the first cooling branch (301) and the third cooling branch (303) are completely communicated with the first flow channel (4);
when the G station is superposed with the flow hole (401), all cooling branches are completely communicated with the first flow passage (4).
5. The motor cooling method applies the partitioned permanent magnet motor water cooling structure of claim 1, and is characterized by comprising the following steps of:
a. screwing the liquid separating valve (6) to an H station, wherein the flow rates of the first cooling branch (301), the second cooling branch (302) and the third cooling branch (303) are the same, and respectively measuring the temperatures of the front, middle and rear three subareas of the shell (1), if the temperatures of the front, middle and rear subareas are basically equal, keeping the liquid separating valve (6) at the H station;
b. if the temperature of three subregion areas in the front, middle and back has local too high temperature, rotate branch liquid valve (6), adjust the aperture of each cooling branch road in the front, middle and back, specifically include:
b1. when the temperature of the region of the shell (1) corresponding to the first cooling branch (301) is too high:
b11. finely adjusting the liquid separating valve (6) between the H station and the G station, and if the temperatures of the front, middle and rear three subareas are basically equal, keeping the state;
b12. if the temperature of the region of the shell (1) corresponding to the first cooling branch (301) is still too high, the liquid separating valve (6) is switched to the A station to be overlapped with the flow hole (401), fine adjustment is carried out between the A station and the B station until the temperatures of the front, middle and rear three subareas are basically equal, and the state is kept;
b2. when the temperature of the region of the shell (1) corresponding to the second cooling branch (302) is overhigh: finely adjusting the liquid separating valve (6) between the H station and the I station until the temperatures of the front, middle and rear three subareas are basically equal, and keeping the state;
b3. when the temperature of the region of the shell (1) corresponding to the third cooling branch (303) is highest:
b31. finely adjusting the liquid separating valve (6) between the H station and the G station, and if the temperatures of the front, middle and rear three subareas are basically equal, keeping the state;
b32. if the temperature of the region of the shell (1) corresponding to the third cooling branch (303) is still too high, the liquid separating valve (6) is switched to the E position to be overlapped with the flow hole (401), fine adjustment is carried out between the D position and the E position until the temperatures of the front, middle and rear three sub-regions are basically equal, and the state is maintained.
CN202010945415.1A 2020-09-10 2020-09-10 Partitioned permanent magnet motor water cooling structure Active CN112087092B (en)

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CN201206643Y (en) * 2008-05-27 2009-03-11 比亚迪股份有限公司 Flow divider
CN101656445B (en) * 2009-09-14 2012-05-23 精进电动科技（北京）有限公司 System and method for cooling motors
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Denomination of invention: A Water Cooling Structure for Partitioned Permanent Magnet Motors

Effective date of registration: 20230519

Granted publication date: 20220527

Pledgee: Zibo Branch of China Post Savings Bank Co.,Ltd.

Pledgor: SHANDONG DEPUDA ELECTRIC MOTOR Co.,Ltd.

Registration number: Y2023980041085