CN108462321B - Motor heat abstractor based on liquid metal - Google Patents
Motor heat abstractor based on liquid metal Download PDFInfo
- Publication number
- CN108462321B CN108462321B CN201810461263.0A CN201810461263A CN108462321B CN 108462321 B CN108462321 B CN 108462321B CN 201810461263 A CN201810461263 A CN 201810461263A CN 108462321 B CN108462321 B CN 108462321B
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- motor
- liquid metal
- heat dissipation
- pump body
- dissipation pipeline
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/20—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection for measuring, monitoring, testing, protecting or switching
- H02K11/25—Devices for sensing temperature, or actuated thereby
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K11/00—Structural association of dynamo-electric machines with electric components or with devices for shielding, monitoring or protection
- H02K11/30—Structural association with control circuits or drive circuits
-
- 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
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
- Motor Or Generator Cooling System (AREA)
Abstract
The invention relates to the technical field of motor heat dissipation, in particular to a liquid metal-based motor heat dissipation device, which comprises a heat dissipation pipeline, a pump body, a temperature sensor and a controller, wherein the heat dissipation pipeline and the pump body are both filled with liquid metal; the heat dissipation pipeline is positioned in the motor and distributed along the shape of the shell of the motor, an inlet and an outlet of the heat dissipation pipeline are respectively communicated with an outlet and an inlet of the pump body, the pump body is positioned in the motor, and a rotor of the pump body is connected with a rotatable bearing of the motor; the temperature sensor is arranged in the heat dissipation pipeline and on the inner wall of the shell of the motor, and the controller is connected with the temperature sensor. The liquid metal has the characteristics of low melting point, excellent electrical conductivity, heat conductivity and the like, so that motors of different models can run in a safe temperature state.
Description
Technical Field
The invention relates to the technical field of motor heat dissipation, in particular to a liquid metal-based motor heat dissipation device.
Background
The motor is used as an important device of electromechanical energy conversion, is an electrical transmission basic part, has wide application field, various product varieties and various specifications, and has three main reasons of motor heating in the normal temperature environment, wherein the motor is damaged due to overhigh heating in the running process of the motor: the first is that the motor internal fault (caused by the bearing, the coil, the magnet, the motor internal water and the stator deformation) and the existing solution methods are mostly: replacing a stator with good rigidity of a high-quality bearing, replacing a pure copper stator, replacing a high-quality magnetic steel sheet or replacing a motor, cleaning accumulated water in the interior, and sealing; a second braking system problem (brake cable does not return, brake block is worn out, brake spring is broken); the third controller problem is that the controller adjusts the speed of the motor by means of electric energy conversion current, and the temperature of the motor is also increased when the motor is driven in overload or in heavy-duty driving. However, when the controller is faulty, the motor can be heated, and in addition, the controller is not matched with the motor, the motor can be heated, so that the motor can be damaged by a small controller of the motor. The above shows that the reasons for overheating of the motor are mostly due to the material and the inability to dissipate heat in time.
Disclosure of Invention
Technical problem to be solved
The invention aims to solve the technical problem that the service life of the existing motor is influenced because the existing motor cannot dissipate heat in time.
(II) technical scheme
In order to solve the technical problem, the invention provides a liquid metal-based motor heat dissipation device, which comprises a heat dissipation pipeline, a pump body, a temperature sensor and a controller, wherein the heat dissipation pipeline and the pump body are both filled with liquid metal; the heat dissipation pipeline is positioned in the motor and distributed along the shape of the shell of the motor, an inlet and an outlet of the heat dissipation pipeline are respectively communicated with an outlet and an inlet of the pump body, the pump body is positioned in the motor, and a rotor of the pump body is connected with a rotatable bearing of the motor; the temperature sensor is arranged on the heat dissipation pipeline and the shell of the motor, and the controller is connected with the temperature sensor.
Wherein, still include heating sensor, heating sensor set up in the heat dissipation pipeline with in the pump body, just heating sensor with the controller is connected.
The power supply device further comprises a forced-off power switch, and the forced-off power switch is connected with the controller.
Wherein, the heat dissipation pipeline includes coil pipe and straight tube, the coil pipe set up in inside the casing of motor, the coil pipe with the pump body passes through the straight tube intercommunication.
Wherein the coil is in the shape of a vortex.
Wherein the liquid metal is a low melting point metal or an alloy thereof.
Wherein the liquid metal is gallium, gallium-indium alloy, gallium-indium-tin alloy or bismuth-indium-tin alloy.
And vacuumizing the heat dissipation pipeline and the pump body before the liquid metal is introduced.
And the liquid metal is subjected to deoxidation treatment before being introduced into the heat dissipation pipeline and the pump body, and the solution subjected to deoxidation is an alkaline solution.
The motor further comprises a fan, wherein the fan is arranged on the shell of the motor to communicate the interior of the motor with the outside.
(III) advantageous effects
The technical scheme of the invention has the following advantages: the invention relates to a liquid metal-based motor heat dissipation device, wherein a heat dissipation pipeline and a pump body which are filled with liquid metal materials are arranged in a motor, the heat dissipation pipeline is arranged according to the shape of a motor shell and is communicated with the pump body to form a heat dissipation loop, the temperature of the liquid metal in the heat dissipation pipeline and the internal temperature of the motor are monitored by the temperature sensor and fed back to the controller, the controller makes judgment according to the fed back temperature information, if the temperature of the liquid metal is higher than the melting point temperature, the controller directly sends out an instruction to start the motor, the pump body shell and the motor shell are both fixed, the rotor of the pump body is fixed on the bearing of the motor, in the running process of the motor, along with the rotation of the bearing of the motor, the rotor of the pump body rotates to pump the liquid metal into the heat dissipation pipeline, the liquid metal flowing in the heat dissipation pipeline transfers the temperature and uniformly disperses the temperature on the surface of the motor shell, and then the liquid metal is rotated by the motor to be in contact with the air to dissipate the temperature in the air. The liquid metal has the characteristics of low melting point, excellent electrical conductivity, heat conductivity and the like, so that motors of different models can run in a safe temperature state.
In addition to the technical problems addressed by the present invention, the technical features constituting the technical solutions and the advantages brought by the technical features of the technical solutions described above, other technical features of the present invention and the advantages brought by the technical features of the technical solutions will be further explained with reference to the accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of a liquid metal-based motor heat dissipation device according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a liquid metal-based motor heat dissipation device according to a second embodiment of the present invention.
In the figure: 1: a heat dissipation pipe; 2: a pump body; 3: a temperature sensor; 4: a controller; 5: a motor; 6: a heating sensor; 7: a fan; 8: a liquid metal; 11: a coil pipe; 12: a straight pipe; 21: a rotor; 51: a housing; 52: and a bearing.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
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.
In addition, in the description of the present invention, unless otherwise specified, "plurality", "plural groups" means two or more, and "several", "several groups" means one or more.
As shown in fig. 1, the liquid metal-based motor heat dissipation device provided by the embodiment of the present invention includes a heat dissipation pipe 1 and a pump body 2 both filled with liquid metal 8, a temperature sensor 3 and a controller 4; the heat dissipation pipeline 1 is positioned in the motor 5 and distributed along the shape of a machine shell 51 of the motor 5, an inlet and an outlet of the heat dissipation pipeline 1 are respectively communicated with an outlet and an inlet of the pump body 2, the pump body 2 is positioned in the motor 5, and a rotor 21 of the pump body 2 is connected with a rotatable bearing 52 of the motor 5; the temperature sensor 3 is arranged on the heat dissipation pipeline 1 and the shell 51 of the motor 5, and the controller 4 is connected with the temperature sensor 3.
The invention relates to a liquid metal-based motor heat dissipation device, wherein a heat dissipation pipeline and a pump body which are filled with liquid metal materials are arranged in a motor, the heat dissipation pipeline is arranged according to the shape of a motor shell and is communicated with the pump body to form a heat dissipation loop, the temperature of the liquid metal in the heat dissipation pipeline and the internal temperature of the motor are monitored by the temperature sensor and fed back to the controller, the controller makes judgment according to the fed back temperature information, if the temperature of the liquid metal is higher than the melting point temperature, the controller directly sends out an instruction to start the motor, the pump body shell and the motor shell are both fixed, the rotor of the pump body is fixed on the bearing of the motor, in the running process of the motor, along with the rotation of the bearing of the motor, the rotor of the pump body rotates to pump the liquid metal into the heat dissipation pipeline, the liquid metal flowing in the heat dissipation pipeline transfers the temperature and uniformly disperses the temperature on the surface of the motor shell, and then the liquid metal is rotated by the motor to be in contact with the air to dissipate the temperature in the air. The liquid metal has the characteristics of low melting point, excellent electrical conductivity, heat conductivity and the like, so that motors of different models can run in a safe temperature state.
The liquid metal-based motor heat dissipation device further comprises heating sensors 6, the heating sensors 6 are arranged in the heat dissipation pipeline 1 and the pump body 2, and the heating sensors 6 are connected with the controller 4. The temperature sensor monitors the temperature of the liquid metal in the heat dissipation pipeline and feeds the temperature back to the controller, the controller makes judgment according to the fed back temperature information, if the temperature of the liquid metal is monitored to be lower than or equal to the melting point temperature, the controller sends out an instruction to control the heating sensor to work, the liquid metal in the pump body and the heat dissipation pipeline is restored to the liquid state in the shortest time, then the judgment is made through the temperature feedback information monitored by the temperature sensor again, and the instruction is sent to drive the motor to work.
The liquid metal-based motor heat dissipation device further comprises a forced-off power switch, and the forced-off power switch is connected with the controller 4. If the temperature inside the motor is too high, the temperature control module can make a judgment through temperature information fed back by the temperature sensor, and control the forced turning-off of a power switch of the motor to stop the motor, so that the motor can guarantee the working safety in the operation process, the working efficiency of the motor is better improved, the operation safety of the motor is guaranteed, and the service life of the motor is prolonged.
Wherein, heat dissipation pipeline 1 includes coil pipe 11 and straight tube 12, and coil pipe 11 sets up inside motor 5's casing 51, and coil pipe 11 passes through straight tube 12 with the pump body 2 and communicates. The material of heat dissipation pipeline is the copper product material, and the heat dissipation pipeline that is equipped with liquid metal directly inlays inside the casing of embedding motor, and is integrative with the casing to more direct convenient realization motor is to the external heat dissipation.
The coil 11 is formed in a spiral shape. The heat dissipation pipeline is an annular loop pipeline with the gradually-reduced vortex-shaped radius, and is favorable for transferring and uniformly dispersing the temperature on the surface of the motor shell.
Wherein the liquid metal 8 is a low melting point metal or an alloy thereof. The liquid metal is unoxidized and has a melting point temperature close to the optimum operating temperature of the motor.
In this embodiment, the liquid metal may be gallium, gallium-indium alloy, gallium-indium-tin alloy, or bismuth-indium-tin alloy. The liquid metal can be doped with materials with good thermal conductivity, such as graphite particles, metal powder and the like, so that the thermal conductivity of the liquid metal can be increased.
Wherein, the heat dissipation pipeline 1 and the pump body 2 are vacuumized before the liquid metal 8 is introduced; the liquid metal 8 is subjected to deoxidation treatment before being introduced into the heat dissipation pipeline 1 and the pump body 2, and the deoxidation solution is alkaline solution. The deoxygenation solution may be a sodium hydroxide solution.
Example two
The liquid metal-based motor heat dissipation device of the present embodiment is substantially the same as the first embodiment, except that the device further includes a fan 7, and the fan 7 is disposed on the housing 51 of the motor 1 to communicate the inside of the motor with the outside. A heat dissipation fan is arranged at the tail of a traditional motor, in the operation process of the motor, temperature is transmitted and uniformly dispersed on the surface of a machine shell through liquid metal flowing in a heat dissipation pipeline, and then the temperature is dissipated in the air through wind power generated by the rotation of the machine shell and the fan.
When the pump body is used, the pump body is a mechanical pump, and the shell material of the mechanical pump and the rotor impeller of the mechanical pump are both made of copper materials. The heating sensor can be a quartz glass heating body or a wire heating body, has the advantages of small thermal resistance and high heat exchange efficiency, and is a controllable constant-temperature and electricity-saving electric heater. The temperature sensor can be a thermocouple, the thermocouple is low in price, power supply is not needed, the temperature measuring range is wide, the temperature sensor can also be a thermistor, the thermistor is very small in size and high in sensitivity, the response to temperature change is fast, the temperature measuring precision is high, and the type of the appropriate temperature sensor can be selected according to actual implementation conditions.
In summary, the liquid metal-based motor heat dissipation device of the invention is provided with a heat dissipation pipeline and a pump body which are filled with liquid metal materials inside a motor, the heat dissipation pipeline is arranged according to the shape of a motor shell and is communicated with the pump body to form a heat dissipation loop, the temperature of the liquid metal in the heat dissipation pipeline and the temperature inside the motor are monitored by a temperature sensor and fed back to a controller, the controller makes a judgment according to temperature information fed back, if the temperature of the liquid metal is higher than a melting point temperature, the controller directly sends an instruction to start the motor, the pump body shell and the motor shell are both fixed, a rotor of the pump body is fixed on a bearing of the motor, in the operation process of the motor, along with the rotation of the bearing of the motor, the rotor of the pump body pumps the liquid metal into the heat dissipation pipeline, and the temperature is transferred and uniformly dispersed, the temperature is diffused in the air by the contact of the motor rotation and the air. The liquid metal has the characteristics of low melting point, excellent electrical conductivity, heat conductivity and the like, so that motors of different models can run in a safe temperature state.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (8)
1. The utility model provides a motor heat abstractor based on liquid metal which characterized in that: the device comprises a heat dissipation pipeline and a pump body which are both filled with liquid metal, a temperature sensor and a controller; the heat dissipation pipeline is positioned in the motor and distributed along the shape of the shell of the motor, an inlet and an outlet of the heat dissipation pipeline are respectively communicated with an outlet and an inlet of the pump body, the pump body is positioned in the motor, and a rotor of the pump body is connected with a rotatable bearing of the motor; the temperature sensors are respectively arranged on the heat dissipation pipeline and the shell of the motor, and the controller is connected with the temperature sensors; the heat dissipation pipeline comprises a coil pipe and a straight pipe, the coil pipe is arranged inside the shell of the motor, and the coil pipe is communicated with the pump body through the straight pipe; the heat dissipation pipeline is integrated with the shell; the coil pipe is an annular loop pipeline with a gradually reduced vortex-shaped radius.
2. The liquid metal-based motor heat sink of claim 1, wherein: still include heating sensor, heating sensor set up in the heat dissipation pipeline with in the pump body, just heating sensor with the controller is connected.
3. The liquid metal-based motor heat sink of claim 1, wherein: the power supply device also comprises a forced-off power switch, and the forced-off power switch is connected with the controller.
4. The liquid metal-based motor heat sink of claim 1, wherein: the liquid metal is a low melting point metal or an alloy thereof.
5. The liquid metal-based motor heat sink of claim 4, wherein: the liquid metal is gallium, gallium indium alloy, gallium indium tin alloy or bismuth indium tin alloy.
6. The liquid metal-based motor heat sink of claim 1, wherein: and the heat dissipation pipeline and the pump body are vacuumized before the liquid metal is introduced.
7. The liquid metal-based motor heat sink of claim 1, wherein: and carrying out deoxidation treatment on the liquid metal before the liquid metal is introduced into the heat dissipation pipeline and the pump body, wherein the solution subjected to deoxidation is an alkaline solution.
8. A liquid metal based electric motor heat sink according to any one of claims 1-7, wherein: the motor is characterized by further comprising a fan, wherein the fan is arranged on the shell of the motor to communicate the interior of the motor with the outside.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810461263.0A CN108462321B (en) | 2018-05-15 | 2018-05-15 | Motor heat abstractor based on liquid metal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810461263.0A CN108462321B (en) | 2018-05-15 | 2018-05-15 | Motor heat abstractor based on liquid metal |
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| Publication Number | Publication Date |
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| CN108462321A CN108462321A (en) | 2018-08-28 |
| CN108462321B true CN108462321B (en) | 2020-03-13 |
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| EP4102691A1 (en) * | 2021-06-09 | 2022-12-14 | ABB Schweiz AG | Electrical machine assembly and method for cooling of electrical machine |
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| CN204992939U (en) * | 2015-06-29 | 2016-01-20 | 西门子（中国）有限公司 | Cooling device and have this cooling device's motor |
| CN205336038U (en) * | 2015-12-09 | 2016-06-22 | 常州嘉轩数控设备有限公司 | Intelligence industrial motor's cooling system |
| CN205992824U (en) * | 2016-08-29 | 2017-03-01 | 宿迁市天宁机电有限公司 | A kind of band is from the electric vehicle motor of cooling water pump |
| CN206341104U (en) * | 2016-11-11 | 2017-07-18 | 温州瓯科科技有限公司 | A kind of electric automobile permagnetic synchronous motor |
| CN207134974U (en) * | 2017-06-14 | 2018-03-23 | 云南靖创液态金属热控技术研发有限公司 | A kind of liquid metal electromagnetic pump |
| CN107994641A (en) * | 2017-12-18 | 2018-05-04 | 云南靖创液态金属热控技术研发有限公司 | A kind of charging unit |
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