CN114977651A - Motor and control method of motor - Google Patents

Motor and control method of motor Download PDF

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Publication number
CN114977651A
CN114977651A CN202210655611.4A CN202210655611A CN114977651A CN 114977651 A CN114977651 A CN 114977651A CN 202210655611 A CN202210655611 A CN 202210655611A CN 114977651 A CN114977651 A CN 114977651A
Authority
CN
China
Prior art keywords
heat dissipation
motor
dissipation fan
fan blade
motor body
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202210655611.4A
Other languages
Chinese (zh)
Inventor
刘怡迪
樊钊
刘振邦
何景伦
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Gree Electric Appliances Inc of Zhuhai
Original Assignee
Gree Electric Appliances Inc of Zhuhai
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Gree Electric Appliances Inc of Zhuhai filed Critical Gree Electric Appliances Inc of Zhuhai
Priority to CN202210655611.4A priority Critical patent/CN114977651A/en
Publication of CN114977651A publication Critical patent/CN114977651A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H02K9/06—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium with fans or impellers driven by the machine shaft
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J7/32—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries for charging batteries from a charging set comprising a non-electric prime mover rotating at constant speed
    • 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
    • H02K5/207—Casings or enclosures characterised by the shape, form or construction thereof with channels or ducts for flow of cooling medium with openings in the casing specially adapted for ambient air
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/02—Additional mass for increasing inertia, e.g. flywheels
    • H02K7/025—Additional mass for increasing inertia, e.g. flywheels for power storage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H02K7/1823—Rotary generators structurally associated with turbines or similar engines
    • H02K7/183—Rotary generators structurally associated with turbines or similar engines wherein the turbine is a wind turbine
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
    • H02K7/18—Structural association of electric generators with mechanical driving motors, e.g. with turbines
    • H02K7/1807—Rotary generators
    • H02K7/1846—Rotary generators structurally associated with wheels or associated parts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K9/00—Arrangements for cooling or ventilating
    • H02K9/02—Arrangements for cooling or ventilating by ambient air flowing through the machine
    • H02K9/04—Arrangements for cooling or ventilating by ambient air flowing through the machine having means for generating a flow of cooling medium
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P29/00—Arrangements for regulating or controlling electric motors, appropriate for both AC and DC motors
    • H02P29/60—Controlling or determining the temperature of the motor or of the drive
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
    • H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P80/00—Climate change mitigation technologies for sector-wide applications
    • Y02P80/10—Efficient use of energy, e.g. using compressed air or pressurized fluid as energy carrier

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Motor Or Generator Cooling System (AREA)

Abstract

The invention provides a motor and a control method of the motor. The motor comprises a motor body; the heat dissipation fan blade is used for dissipating heat of the motor body and arranged on one side of the motor body, and the heat dissipation fan blade is provided with a first state which is connected with the motor body and driven by the motor body and a second state which is disconnected with the motor body and driven by a preset structure. The motor and the control method of the motor provided by the invention can control the heat dissipation fan blades to dissipate heat under different states according to the requirements of the motor body, thereby effectively overcoming the defect that the heat dissipation fan blades of the motor in the prior art cannot meet the heat dissipation requirements of the motor under different rotating speeds, and meanwhile, the energy storage element is arranged, and the normal operation of the heat dissipation fan blades can be ensured by utilizing the energy conversion of the heat dissipation fan blades and the energy storage element, and an external power supply can be avoided, so that the cost of the motor is reduced, and the safe and stable operation of the motor is realized.

Description

Motor and control method of motor
Technical Field
The invention relates to the technical field of driving equipment, in particular to a motor and a control method of the motor.
Background
With the development of motor technology, the power of the motor is continuously increased, and the material utilization rate is also continuously improved, so that the motor has higher load during operation, and the temperature of each component is increased. If the temperature is too high, the aging of each part can be accelerated, the insulation performance is reduced rapidly, and the service life of the motor is seriously influenced, so that the improvement of the heat dissipation and cooling capacity of the motor also becomes one of the important problems to be solved in the development process of the motor.
At present, the alternating-current low-voltage variable-frequency motor is mainly cooled by a coaxial cooling fan and an independent cooling fan, and when the frequency of the motor is low and the rotating speed is low, the air supply quantity is greatly reduced, so that poor heat dissipation of the motor is caused; and the independent fan needs to be independently powered and is provided with an independent junction box, so that the air supply quantity of the fan is the same no matter the frequency of the motor is high or low, and the electric energy consumption is increased.
Disclosure of Invention
In order to solve the technical problem of poor cooling effect of the variable frequency motor in the prior art, a motor with a heat dissipation device in multiple states for heat dissipation and a control method of the motor are provided.
An electric machine comprising:
a motor body;
the heat dissipation fan blade is used for dissipating heat of the motor body and arranged on one side of the motor body, and the heat dissipation fan blade is provided with a first state which is connected with the motor body and driven by the motor body and a second state which is disconnected with the motor body and driven by a preset structure.
The motor body is provided with an output shaft, and when the motor body is in the first state, the rotating shaft of the heat dissipation fan blade is connected with the output shaft.
The rotating shaft is connected with the output shaft through a clutch, and the clutch can enable the heat dissipation fan blade to be switched between the first state and the second state.
The clutch is including set up in on the output shaft recess with set up in epaxial transmission piece of commentaries on classics, when the clutch is in the engaged state, the transmission piece stretches into in the recess, when the clutch is in the disengagement state, the transmission piece is deviate from the recess.
The first end of pivot stretches into in the output shaft, just the inside of output shaft is formed with the recess, be formed with the second recess in the pivot during first state, the transmission piece stretches into in the recess during the second state, the transmission piece retracts in the second recess.
The axis of the rotating shaft is collinear with the axis of the output shaft.
The motor further comprises an energy storage mechanism, the energy storage mechanism is connected with the heat dissipation fan blade and can drive the heat dissipation fan blade, and/or the heat dissipation fan blade charges the energy storage mechanism, and the energy storage mechanism (4) forms the preset structure.
The motor further comprises a fan cover, the heat dissipation fan blades are arranged in the fan cover, and the fan cover is connected to the motor body.
The motor further comprises a control device, the control device is electrically connected with the heat dissipation fan blade, and the control device can acquire the temperature and/or the rotating speed of the motor body and control the heat dissipation fan blade to be switched between the first state and the second state.
A control method of the motor includes:
acquiring the actual temperature T0 of the motor body, and comparing T0 with a preset temperature value T1;
and if the T0 is more than or equal to T1, controlling the heat dissipation fan blade to be switched to the first state.
A control method of the motor includes:
acquiring an actual rotating speed S0 of the motor body, and comparing the actual rotating speed S0 with a preset rotating speed value;
if S0 is not less than S1, the heat dissipation fan blade is controlled to be switched to the first state.
The motor and the control method of the motor provided by the invention can control the heat dissipation fan blades to dissipate heat under different states according to the requirements of the motor body, thereby effectively overcoming the defect that the heat dissipation fan blades of the motor in the prior art cannot meet the heat dissipation requirements of the motor under different rotating speeds, and meanwhile, the energy storage element is arranged, and the normal operation of the heat dissipation fan blades can be ensured by utilizing the energy conversion of the heat dissipation fan blades and the energy storage element, and an external power supply can be avoided, so that the cost of the motor is reduced, and the safe and stable operation of the motor is realized.
Drawings
Fig. 1 is a schematic structural diagram of a motor according to an embodiment of the present invention;
FIG. 2 is a schematic view of a portion of FIG. 1 at A;
FIG. 3 is a schematic structural diagram of a clutch according to an embodiment of the present invention;
fig. 4 is a flowchart of a control method of a motor according to an embodiment of the present invention;
fig. 5 is another flowchart of a control method of a motor according to an embodiment of the present invention;
in the figure:
1. a motor body; 2. a heat dissipation fan blade; 11. an output shaft; 21. a rotating shaft; 111. a groove; 211. a second groove; 3. a transmission block; 4. an energy storage mechanism; 5. a fan guard.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
The motor shown in fig. 1 to 5 includes: a motor body 1; the heat dissipation fan blade 2 is used for dissipating heat of the motor body 1, the heat dissipation fan blade 2 is arranged on one side of the motor body 1, and the heat dissipation fan blade 2 is provided with a first state which is connected with the motor body 1 and driven by the motor body 1 and a second state which is disconnected with the motor body 1 and driven by a preset structure. The heat dissipation fan blades 2 are controlled to dissipate heat under different states according to the requirements of the motor body 1, so that the problem that the heat dissipation fan blades 2 of the motor in the prior art cannot meet the heat dissipation requirements of the motor at different rotating speeds is effectively solved.
Specifically, when the heat dissipation fan blade 2 is in the first state, the heat dissipation fan blade 2 is connected with the motor body 1, and at this time, the motor body 1 can drive the heat dissipation fan blade 2 to rotate, so that heat dissipation of the motor body 1 is realized, and when the heat dissipation fan blade 2 is in the second state, the heat dissipation fan blade 2 can be driven by a preset structure to rotate, so that heat dissipation of the motor body 1 is realized. When the heat dissipation fan blade 2 is driven by the preset structure to rotate, the first-stage heat dissipation effect can be achieved on the motor body 1, when the heat dissipation fan blade 2 is connected with the motor body 1, the heat dissipation fan blade 2 is directly driven by the motor body 1, the second-stage heat dissipation effect can be achieved on the motor body 1 through the heat dissipation fan blade 2, and the second-stage heat dissipation effect is superior to the first-stage heat dissipation effect. That is, the rotation speed of the heat dissipation fan blade 2 in the second state is less than the rotation speed of the heat dissipation fan blade 2 in the first state.
The motor body 1 is provided with an output shaft 11, and in the first state, the rotating shaft 21 of the heat dissipation fan blade 2 is connected with the output shaft 11. That is, the rotation of the output shaft 11 is utilized to drive the rotation of the rotating shaft 21, so that the rotation of the heat dissipation fan blade 2 is realized, and the purpose of heat dissipation of the motor body 1 is achieved.
The rotating shaft 21 is connected with the output shaft 11 through a clutch, and the clutch can enable the heat dissipation fan blade 2 to be switched between the first state and the second state. The control of the heat dissipation fan blade 2 is realized by controlling the clutch.
The clutch comprises a groove 111 arranged on the output shaft 11 and a transmission block 3 arranged on the rotating shaft 21, when the clutch is in a joint state (when the heat dissipation fan blade 2 is in the first state), the transmission block 3 extends into the groove 111, and the transmission block 3 is matched with the groove 111 to connect the output shaft 11 with the rotating shaft 21, so that the motor body 1 drives the heat dissipation fan blade 2 to rotate; when the clutch is in a separation state (the heat dissipation fan blade 2 is in the second state), the transmission block 3 is disengaged from the groove 111, no connection exists between the output shaft 11 and the rotating shaft 21, and the heat dissipation fan blade 2 rotates under the driving of a preset structure.
The first end of pivot 21 stretches into in the output shaft 11, just the inside of output shaft 11 is formed with recess 111, be formed with second recess 211 on the pivot 21, transmission block 3 set up in the second recess 211, and during the first state, transmission block 3 stretches into in the recess 111 during the second state, transmission block 3 retracts in the second recess 211.
Specifically, a deformation mechanism is further arranged in the second groove 211, and the transmission block 3 is arranged on the deformation mechanism and can enter or be separated from the groove 111 under the driving of the deformation mechanism.
Preferably, the deformation mechanism is a spring.
The axis of the rotary shaft 21 is collinear with the axis of the output shaft 11. Facilitating the connection of the rotary shaft 21 and the output shaft 11.
The motor further comprises an energy storage mechanism 4, the energy storage mechanism 4 is connected with the heat dissipation fan blade 2, the energy storage mechanism 4 can drive the heat dissipation fan blade 2, and the energy storage mechanism 4 forms a preset structure for driving the heat dissipation fan blade 2; and/or the heat dissipation fan blade 2 charges the energy storage mechanism 4, at this time, the heat dissipation fan blade 2 is connected with the motor body 1, the heat dissipation fan blade 2 can operate as a generator, and electric energy generated by the heat dissipation fan blade 2 is stored in the energy storage mechanism 4.
The motor further comprises a fan cover 5, the heat dissipation fan blade 2 is arranged in the fan cover 5, and the fan cover 5 is connected to the motor body 1. Utilize fan guard 5 to realize fixing heat dissipation fan blade 2, shield heat dissipation fan blade 2 simultaneously, avoid heat dissipation fan blade 2 to rotate and cause unexpected injury. Preferably, the fan cover 5 is provided with a vent hole, and the heat dissipation fan blade 2 can drive airflow outside the fan cover 5 to enter from the vent hole and dissipate heat of the motor body 1.
The motor further comprises a control device, the control device is electrically connected with the heat dissipation fan blade 2, and the control device can acquire the temperature and/or the rotating speed of the motor body 1 and control the heat dissipation fan blade 2 to be switched between the first state and the second state. The control device can acquire the numerical value of the temperature and/or the numerical value of the rotating speed of the motor body 1 according to the preset requirement, and when the numerical value exceeds the preset value, the heat dissipation fan blade 2 is switched to the first state, so that the heat dissipation effect on the motor body 1 is increased.
As shown in fig. 4, another embodiment of the present invention discloses a control method of the above motor, including:
acquiring the actual temperature T0 of the motor body 1, and comparing the T0 with a preset temperature value T1;
if T0 is greater than or equal to T1, it indicates that the heat dissipation amount required by the motor body 1 is large at this time, and the heat dissipation fan blade 2 may not satisfy the heat dissipation requirement by being driven by the preset structure, the heat dissipation fan blade 2 is controlled to switch to the first state, so that the heat dissipation fan blade 2 dissipates heat under the drive of the motor body 1, and the heat dissipation efficiency of the heat dissipation fan blade 2 on the motor body 1 is effectively increased.
If T0 is less than T1, it indicates that the heat dissipation capacity required by the motor body 1 is not large at this time, and the heat dissipation fan blade 2 driven by the preset structure can theoretically meet the heat dissipation requirement of the motor body 1.
As shown in fig. 5, another embodiment of the present invention discloses a control method of the above motor, including:
acquiring an actual rotating speed S0 of the motor body 1, and comparing S0 with a preset rotating speed value;
if S0 is greater than or equal to S1, it indicates that the heat dissipation amount required by the motor body 1 is large at this time, and the heat dissipation fan blade 2 may not satisfy the heat dissipation requirement by being driven by the preset structure, the heat dissipation fan blade 2 is controlled to switch to the first state, so that the heat dissipation fan blade 2 dissipates heat under the driving of the motor body 1, and the heat dissipation efficiency of the heat dissipation fan blade 2 on the motor body 1 is effectively increased.
If S0 is less than S1, it indicates that the heat dissipation capacity required by the motor body 1 is not large at this time, and the heat dissipation fan blade 2 driven by the preset structure can theoretically meet the heat dissipation requirement of the motor body 1.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims (11)

1. An electric machine characterized by: the method comprises the following steps:
a motor body (1);
the heat dissipation fan blade (2) is used for dissipating heat of the motor body (1), the heat dissipation fan blade (2) is arranged on one side of the motor body (1), and the heat dissipation fan blade (2) is provided with a first state which is connected with the motor body (1) and driven by the motor body (1) and a second state which is disconnected with the motor body (1) and driven by a preset structure.
2. The electric machine of claim 1, wherein: the motor body (1) is provided with an output shaft (11), and in the first state, a rotating shaft (21) of the heat dissipation fan blade (2) is connected with the output shaft (11).
3. The electric machine of claim 2, wherein: the rotating shaft (21) is connected with the output shaft (11) through a clutch, and the clutch can enable the heat dissipation fan blade (2) to be switched between the first state and the second state.
4. The electric machine of claim 3, wherein: the clutch comprises a groove (111) arranged on the output shaft (11) and a transmission block (3) arranged on the rotating shaft (21), when the clutch is in an engaging state, the transmission block (3) extends into the groove (111), and when the clutch is in a disengaging state, the transmission block (3) is separated from the groove (111).
5. The electric machine of claim 4, wherein: the first end of pivot (21) stretches into in output shaft (11), just the inside of output shaft (11) is formed with recess (111), be formed with second recess (211) on pivot (21), during first state, drive block (3) stretch into in recess (111) during the second state, drive block (3) retract in second recess (211).
6. The electric machine of claim 2, wherein: the axis of the rotating shaft (21) is collinear with the axis of the output shaft (11).
7. The electric machine of claim 1, wherein: the motor further comprises an energy storage mechanism (4), the energy storage mechanism (4) is connected with the heat dissipation fan blade (2), the energy storage mechanism (4) can drive the heat dissipation fan blade (2), and/or the heat dissipation fan blade (2) charges the energy for the energy storage mechanism (4), and the energy storage mechanism (4) forms the preset structure.
8. The electric machine of claim 1, wherein: the motor further comprises a fan cover, the heat dissipation fan blade (2) is arranged in the fan cover, and the fan cover is connected to the motor body (1).
9. The electric machine of claim 1, wherein: the motor further comprises a control device, the control device is electrically connected with the heat dissipation fan blade (2), and the control device can acquire the temperature and/or the rotating speed of the motor body (1) and control the heat dissipation fan blade (2) to be switched between the first state and the second state.
10. A control method of the motor according to any one of claims 1 to 9, characterized in that: the method comprises the following steps:
acquiring the actual temperature T0 of the motor body (1), and comparing the T0 with a preset temperature value T1;
if T0 is more than or equal to T1, the heat dissipation fan blade (2) is controlled to be switched to the first state.
11. A control method of the motor according to any one of claims 1 to 9, characterized in that: the method comprises the following steps:
acquiring an actual rotating speed S0 of the motor body (1), and comparing S0 with a preset rotating speed value;
if S0 is larger than or equal to S1, the heat dissipation fan blade (2) is controlled to be switched to the first state.
CN202210655611.4A 2022-06-10 2022-06-10 Motor and control method of motor Pending CN114977651A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210655611.4A CN114977651A (en) 2022-06-10 2022-06-10 Motor and control method of motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210655611.4A CN114977651A (en) 2022-06-10 2022-06-10 Motor and control method of motor

Publications (1)

Publication Number Publication Date
CN114977651A true CN114977651A (en) 2022-08-30

Family

ID=82960867

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202210655611.4A Pending CN114977651A (en) 2022-06-10 2022-06-10 Motor and control method of motor

Country Status (1)

Country Link
CN (1) CN114977651A (en)

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