CN113937955A - Motor cooling system - Google Patents
Motor cooling system Download PDFInfo
- Publication number
- CN113937955A CN113937955A CN202111274853.0A CN202111274853A CN113937955A CN 113937955 A CN113937955 A CN 113937955A CN 202111274853 A CN202111274853 A CN 202111274853A CN 113937955 A CN113937955 A CN 113937955A
- Authority
- CN
- China
- Prior art keywords
- temperature
- oil
- gear oil
- heat dissipation
- controller
- 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
Links
- 238000001816 cooling Methods 0.000 title claims abstract description 81
- 239000012208 gear oil Substances 0.000 claims abstract description 106
- 230000017525 heat dissipation Effects 0.000 claims abstract description 70
- 239000007788 liquid Substances 0.000 claims abstract description 36
- 238000003860 storage Methods 0.000 claims abstract description 36
- 238000004891 communication Methods 0.000 claims abstract description 12
- 239000003921 oil Substances 0.000 claims description 69
- 238000001914 filtration Methods 0.000 claims description 6
- 239000010705 motor oil Substances 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000000110 cooling liquid Substances 0.000 description 4
- 238000009529 body temperature measurement Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 241000251468 Actinopterygii Species 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Details Of Gearings (AREA)
Abstract
The invention discloses a motor cooling system, comprising: the cooling system comprises a liquid storage device, a heat dissipation device, a controller and a flow dividing valve, wherein the liquid storage device is connected with the heat dissipation device through a first pipeline, the heat dissipation device is connected with the flow dividing valve through a second pipeline, the flow dividing valve is correspondingly connected with N motors through N third pipelines, the controller is in communication connection with the heat dissipation device, and N is a positive integer greater than 1; the controller is used for determining heat dissipation parameters according to the temperature of the gear oil at the target position; the heat dissipation device is used for cooling the gear oil to be cooled according to the heat dissipation parameters; the flow dividing valve is used for distributing the cooled gear oil to the N motors according to a preset proportion so as to cool the N motors.
Description
Technical Field
The invention relates to the field of heat dissipation, in particular to a motor cooling system.
Background
With the development of science and technology, more and more tools using electricity as power are provided, and the most common way to convert electric energy into kinetic energy is to convert the kinetic energy by a motor. As the rotation speed of the motor increases in various fields, heat dissipation of the motor also becomes a problem to be considered.
In order to dissipate heat from the motor, a motor cooling system is introduced. The existing motor cooling system cools a motor in a water cooling mode, and a plurality of circulation loops exist in the motor.
However, cooling the motor by water cooling has problems of complicated cooling system structure and poor cooling effect.
Disclosure of Invention
The embodiment of the application provides a motor cooling system, and solves the technical problems that the motor is cooled by a water cooling mode in the prior art, and the cooling system is complex in structure and poor in cooling effect.
The application provides the following technical scheme through an embodiment of the application:
an electric machine cooling system comprising:
the cooling system comprises a liquid storage device, a heat dissipation device, a controller and a flow dividing valve, wherein the liquid storage device is connected with the heat dissipation device through a first pipeline, the heat dissipation device is connected with the flow dividing valve through a second pipeline, the flow dividing valve is correspondingly connected with N motors through N third pipelines, the controller is in communication connection with the heat dissipation device, and N is a positive integer greater than 1; the gear oil to be cooled stored in the liquid storage device flows into the heat dissipation device through the first pipeline so that the heat dissipation device cools the gear oil to be cooled, and the cooled gear oil flows into the flow dividing valve through the second pipeline;
the controller is used for determining heat dissipation parameters according to the temperature of the gear oil at the target position;
the heat dissipation device is used for cooling the gear oil to be cooled according to the heat dissipation parameters;
the flow dividing valve is used for distributing the cooled gear oil to the N motors according to a preset proportion so as to cool the N motors.
Preferably, the system further comprises:
the electric pump is arranged on the first pipeline, is connected with the liquid storage device and the heat dissipation device, and is used for extracting the gear oil to be cooled in the liquid storage device at the rotating speed of the first electric pump and transmitting the gear oil to be cooled to the heat dissipation device;
the controller is connected with the electric pump and used for controlling the electric pump to pump the gear oil in the liquid storage device at a second electric pump rotating speed which is greater than the first electric pump rotating speed when the temperature of the gear oil is higher than the target oil temperature.
Preferably, the heat dissipating device includes:
the temperature measuring device and the fan are connected with the controller;
the radiator comprises an oil inlet and an oil outlet, the oil inlet is connected with the electric pump through the first pipeline, and the oil outlet is connected with the flow divider valve through the second pipeline and used for cooling the gear oil to be cooled;
the first temperature measuring device is arranged at the oil outlet and used for collecting the target temperature of the cooled gear oil and sending the target temperature to the controller;
the controller is used for determining a fan control parameter based on the received target temperature and sending the fan control parameter to the fan so as to drive the fan;
the air outlet of the fan is opposite to the radiator, and the fan is used for cooling the gear oil to be cooled according to the fan control parameters.
Preferably, the controller is configured to:
when the target temperature reaches a first oil temperature, determining the fan control parameter as a first rotating speed so that the fan cools the gear oil to be cooled at the first rotating speed;
and when the target temperature reaches a second oil temperature, determining the fan control parameter as a second rotating speed so that the fan cools the gear oil to be cooled at the second rotating speed, wherein the first oil temperature is less than the second oil temperature, and the first rotating speed is less than the second rotating speed.
Preferably, the system further comprises:
and the filtering device is connected with the electric pump and the heat dissipation device through the first pipeline and is used for filtering the gear oil from the electric pump.
Preferably, the system further comprises:
the N second temperature measuring devices are respectively and correspondingly arranged at oil outlets of the N motors, and each second temperature measuring device is in communication connection with the controller;
each second temperature measuring device is used for acquiring the temperature of the cooled gear oil at the corresponding motor oil outlet;
the controller is used for determining an alarm parameter when any one of the N second temperature measuring devices detects that the temperature of the cooled gear oil is higher than the preset temperature;
and the alarm device is connected with the controller and used for receiving the alarm parameters and giving an alarm according to the alarm parameters.
Preferably, the system further comprises:
the environment temperature measuring device is in communication connection with the controller and is used for measuring the environment temperature around the motor cooling system;
and the controller is used for controlling the motor cooling system to start when the environment temperature is greater than or equal to the working condition temperature, and controlling the motor cooling system to stop running when the environment temperature is less than the working condition temperature.
Preferably, the liquid storage device comprises:
and the pressure valve is arranged on the liquid storage device and used for releasing the pressure of the motor cooling system to a target pressure range when the pressure of the motor cooling system is greater than a preset pressure.
Preferably, the diverter valve is a one-way diverter valve.
Preferably, the system comprises:
the two second temperature measuring devices and the two motors are arranged, wherein the two second temperature measuring devices are respectively and correspondingly arranged at oil outlets of the two motors, and the two motors are coaxial motors.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
in the motor cooling system of the embodiment of the present invention, the motor cooling system includes: the cooling system comprises a liquid storage device, a heat dissipation device, a controller and a flow dividing valve, wherein the liquid storage device is connected with the heat dissipation device through a first pipeline, the heat dissipation device is connected with the flow dividing valve through a second pipeline, the flow dividing valve is correspondingly connected with N motors through N third pipelines, the controller is in communication connection with the heat dissipation device, and N is a positive integer greater than 1; the gear oil to be cooled stored in the liquid storage device flows into the heat dissipation device through the first pipeline so that the heat dissipation device cools the gear oil to be cooled, and the cooled gear oil flows into the flow dividing valve through the second pipeline; the controller is used for determining heat dissipation parameters according to the temperature of the gear oil at the target position; the heat dissipation device is used for cooling the gear oil to be cooled according to the heat dissipation parameters; the flow dividing valve is used for distributing the cooled gear oil to the N motors according to a preset proportion so as to cool the N motors.
In the above scheme, gear oil is adopted as the cooling liquid, a plurality of circulation loops are not required to be arranged, and the controller controls the cooling intensity of the heat dissipation device according to the temperature of the gear oil, so that the cooling system can further effectively cool the motors at various temperatures by adopting the cooling intensities with different powers for the gear oil at different temperatures.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic diagram of a motor cooling system 100 provided in an embodiment of the present application;
fig. 2 is a schematic view of a heat dissipation device 102 according to an embodiment of the present disclosure.
Detailed Description
The embodiment of the application provides a motor cooling system, and solves the technical problems that the motor is cooled by a water cooling mode in the prior art, and the cooling system is complex in structure and poor in cooling effect.
In order to solve the technical problems, the general idea of the embodiment of the application is as follows:
an electric machine cooling system comprising: the cooling system comprises a liquid storage device, a heat dissipation device, a controller and a flow dividing valve, wherein the liquid storage device is connected with the heat dissipation device through a first pipeline, the heat dissipation device is connected with the flow dividing valve through a second pipeline, the flow dividing valve is correspondingly connected with N motors through N third pipelines, the controller is in communication connection with the heat dissipation device, and N is a positive integer greater than 1; the gear oil to be cooled stored in the liquid storage device flows into the heat dissipation device through the first pipeline so that the heat dissipation device cools the gear oil to be cooled, and the cooled gear oil flows into the flow dividing valve through the second pipeline; the controller is used for determining heat dissipation parameters according to the temperature of the gear oil at the target position; the heat dissipation device is used for cooling the gear oil to be cooled according to the heat dissipation parameters; the flow dividing valve is used for distributing the cooled gear oil to the N motors according to a preset proportion so as to cool the N motors.
In order to better understand the technical solution, the technical solution will be described in detail with reference to the drawings and the specific embodiments.
First, it is stated that the term "and/or" appearing herein is merely one type of associative relationship that describes an associated object, meaning that three types of relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The present application provides an electric machine cooling system 100, as shown in fig. 1, comprising: the cooling system comprises a liquid storage device 101, a heat dissipation device 102, a controller 103 and a shunt valve 104, wherein the liquid storage device 101 is connected with the heat dissipation device 102 through a first pipeline, the heat dissipation device 102 is connected with the shunt valve 104 through a second pipeline, the shunt valve 104 is correspondingly connected with N motors through N third pipelines, the controller 103 is in communication connection with the heat dissipation device 102, and N is a positive integer greater than 1; gear oil to be cooled stored in the liquid storage device 101 flows into the heat dissipation device 102 through a first pipeline, so that the heat dissipation device 102 cools the gear oil to be cooled, and the cooled gear oil flows into the flow dividing valve 104 through a second pipeline; a controller 103 for determining a heat dissipation parameter according to a temperature of the gear oil at the target position; the heat dissipation device 102 is used for cooling the gear oil to be cooled according to heat dissipation parameters; and the flow dividing valve 104 is used for distributing the cooled gear oil to the N motors according to a preset proportion so as to cool the N motors.
The motor cooling system 100 provided in this embodiment may be used for heat dissipation and cooling of various motors, such as a large-scale numerical control machine motor, an oil-electric hybrid vehicle motor, and a wheel hub motor of a pure electric vehicle, and for convenience of description, this motor cooling system 100 is mainly described in this embodiment by taking the wheel hub motor of the pure electric vehicle as an example.
The gear oil integrating the functions of lubrication, cleaning and heat dissipation is selected as the cooling liquid of the system 100, the oil cavity and the oil passage of the hub motor can be utilized to the maximum extent, and a new oil passage or a new water passage does not need to be additionally designed for circulation of the cooling liquid, wherein the first pipeline, the second pipeline and the third pipeline are the oil passages of the hub motor. The liquid storage device 101 can be an oil tank, and is mainly used for storing gear oil to be cooled, and meanwhile, the buffer can be made for the circulation of gear oil in the hub motor, so that the gear oil in the motor is prevented from being pumped out. The heat dissipation device 102 is used for cooling the gear oil which flows into the hub motor from the hub motor and is to be cooled, and then transferring the cooled gear oil to the next mechanism. The flow dividing valve 104 may divide the cooled gear oil or the like in one oil passage (i.e., the second pipe) into a plurality of portions. The controller 103 is mainly configured to control the cooling device 102 to cool the gear oil according to a target position of the gear oil temperature, where the target position may be an oil inlet of the cooling device 102 or an oil outlet of the cooling device 102.
The main cyclic process of the system 100 is as follows: the gear oil to be cooled extracted from the N motors flows into the heat dissipation device 102 through the liquid storage device 101, the controller 103 controls the heat dissipation device 102 to cool the gear oil to be cooled with different cooling strengths by acquiring the oil temperature at the inlet or the outlet of the heat dissipation device 102 according to different oil temperatures, the cooled gear oil flows to the flow dividing valve 104 and is divided into a plurality of parts by the flow dividing valve 104 in proportion, and the parts flow into a plurality of motors corresponding to a plurality of third pipelines respectively, so that the motors are cooled, and the cooling circulation process of the whole system is completed. The N motors may be 4 in-wheel motors of an electric vehicle, or may be two in-wheel motors of an electric vehicle, the preset ratio may be adjusted according to an actual condition, and taking the two in-wheel motors A, B of an electric vehicle as an example, if the temperature of the motor a is always higher than the temperature of the motor B in the actual condition, the diverter valve 104 may be adjusted to distribute more cooled gear oil to the motor a. In this embodiment, the cooled gear oil distribution is mainly described in an equal ratio by a flow divider.
Optionally, the system 100 further comprises: the electric pump 105 is arranged on the first pipeline, is connected with the liquid storage device 101 and the heat dissipation device 102, and is used for extracting gear oil in the liquid storage device 101 at the rotating speed of the first electric pump and transmitting the gear oil to the heat dissipation device; and the controller 103 is connected with the electric pump 105 and is used for controlling the electric pump 105 to pump the gear oil in the liquid storage device 101 at a second electric pump rotating speed which is greater than the first electric pump rotating speed when the gear oil temperature is higher than the target oil temperature.
The target oil temperature may be set according to actual conditions. An electric pump 105 is disposed on the first pipe between the liquid storage device 101 and the heat sink 102 to pump and transfer gear oil, and the circulation speed of the gear oil in the system 100 can be adjusted by controlling the rotation speed of the electric pump 105 through the controller 103. The first electric pump rotation speed can be a rated rotation speed of the electric pump, and can be set according to actual conditions, for example, the first electric pump rotation speed of the electric pump 105 is 840r/min, and the second electric pump rotation speed is 840 r/min-1500 r/min.
Alternatively, as shown in fig. 2, the heat sink 102 includes: the radiator 1021, the first temperature measuring device 1023 and the fan 1022, wherein the first temperature measuring device 1023 and the fan 1022 are connected with the controller 103; the radiator 1021 comprises an oil inlet and an oil outlet, the oil inlet is connected with the electric pump 105 through a first pipeline, the oil outlet is connected with the flow divider valve 104 through a second pipeline, and the radiator is used for cooling the gear oil to be cooled; the first temperature measuring device 1023 is arranged at the oil outlet and used for collecting the target temperature of the cooled gear oil and sending the target temperature to the controller 103; a controller 103 for determining a fan control parameter based on the received target temperature and sending the fan control parameter to the fan 1022 to drive the fan 1022; an air outlet of the fan 1022 is disposed opposite to the heat sink 1021, and is configured to cool the gear oil to be cooled according to a fan control parameter.
The target temperature may be the gear oil temperature acquired by the second temperature measurement device 1023, and the target oil temperature may be equal to the target temperature. The fan control parameter may be a signal that the controller 103 controls the fan to increase or decrease the rotational speed. The radiator 1021 is connected to the oil passage in the radiator 102, and the oil inlet thereof is connected to the electric pump 105 through a first pipe, and the oil outlet thereof is connected to the flow divider 104 through a second pipe. The heat sink 1021 may be made of a metal material having good thermal conductivity, and the body thereof may be provided in a fish scale shape to increase the surface area thereof. The air outlet of the fan 1022 is arranged opposite to the body of the radiator 1021, and when the fan 1022 is turned on, the air flow speed of the outer surface of the radiator 1021 can be increased, so that the oil temperature of gear oil in the radiator 1021 can be increased. At the oil outlet of the radiator 1021, a first temperature measuring device 1023 may be disposed for measuring the oil temperature of the gear oil at the oil outlet of the radiator 1021, and the first temperature measuring device 1023 is in communication with the controller 103, so that the controller 103 may determine a fan control parameter according to the target temperature obtained by the first temperature measuring device 1023, and then control the rotation speed of the fan 1022 according to the fan control parameter, thereby changing the cooling strength of the heat sink 102. For example: the target temperature obtained by the first temperature measuring device 1023 is 58 ℃, the controller 103 determines the fan control parameter to be 1300r/min after receiving the target temperature, and further controls the fan 1022 to operate at the rotation speed of 1300r/min according to the fan control parameter.
Optionally, a controller 103 for: when the target temperature reaches the first oil temperature, determining the fan control parameter as a first rotating speed, and controlling the fan 1022 to operate at the first rotating speed; when the target temperature reaches the second oil temperature, the fan control parameter is determined to be a second rotation speed, and the fan 1022 is controlled to operate at the second rotation speed, wherein the first oil temperature is less than the second oil temperature, and the first rotation speed is less than the second rotation speed.
When the gear oil flows out from the oil outlet of the radiator 1021, the first temperature measuring device 1023 detects the gear oil temperature at the oil outlet of the radiator 1021, i.e. the target temperature, and then sends a target temperature signal to the controller 103. When the target temperature acquired by the controller 103 reaches the first oil temperature, determining the fan control parameter as a first rotating speed, and controlling the fan 1022 to operate at the first rotating speed; when the target temperature reaches the second oil temperature, the fan control parameter is determined to be the second rotational speed to control the fan 1022 to operate at the second rotational speed while controlling the electric pump 105 to operate at the second power. The values of the first oil temperature, the second oil temperature, the first rotating speed and the second rotating speed can be specifically set according to actual conditions, for example: if the target oil temperature is the second oil temperature, the first oil temperature is 60 ℃, the second oil temperature is 90 ℃, the first rotating speed is 1170r/min, the second rotating speed is 3510r/min, and the second electric pump rotating speed is 1500r/min, if the first temperature measuring device 1023 detects that the first temperature is 65 ℃ at a certain moment, the controller 103 controls the fan 1022 to operate at the rotating speed of 1170r/min, and the electric pump 105 to operate at the first electric pump rotating speed.
Optionally, the system 100 further comprises: and a filtering device 106 connected to the electric pump 105 and the heat sink 102 through a first pipe for filtering the gear oil from the electric pump 105.
After being circulated for many times in the cooling system and the motor, the gear oil can generate certain impurities, and if the gear oil is not treated for a long time, the problems of blockage of the cooling system and the like can be caused, and the normal operation of the cooling system and the motor is influenced. The gear oil is filtered by a filter 106 arranged between the electric pump 105 and the heat sink 102 on the first pipeline, which can effectively avoid the above problems. The filter assembly 106 may be removable to facilitate periodic cleaning of the filter assembly 106 by an operator.
Optionally, the system 100 further comprises: the N second temperature measuring devices 107 are correspondingly arranged at the oil outlets of the N motors respectively, are in communication connection with the controller 103, and are used for acquiring the temperature of the gear oil at the oil outlets of the N motors; the controller 103 is used for determining an alarm parameter when any one of the N second temperature measuring devices 107 detects that the temperature of the gear oil is higher than a preset temperature; and the alarm device 108 is connected with the controller 103 and used for receiving the alarm parameters and giving an alarm according to the alarm parameters.
The alarm device 108 may be an alarm device combining a buzzer and an alarm lamp, and may be installed in a control room or may be displayed on a dashboard of the vehicle through an electric wire. The number of the second temperature measuring devices 107 corresponds to the number of the motors, a second temperature measuring device 107 is arranged at the oil outlet of each motor, and the second temperature measuring devices 107 send the acquired motor oil outlet gear oil temperature signals to the controller 103 in real time, so that the controller 103 monitors the temperature of the gear oil at each motor oil outlet in real time. The preset temperature can be set according to actual conditions, and is generally a temperature threshold value of the gear oil. Under the condition that the system 100 normally operates, the condition that the temperature of the gear oil reaches the preset temperature generally does not occur, and if the temperature signal of the gear oil at the oil outlet of the motor, which is received by the controller 103, reaches the preset temperature, it is indicated that the system 100 or the motor has a fault. At this time, the controller 103 controls the alarm device 108 to alarm. Taking the preset temperature as 75 ℃ as an example, when the second temperature measuring device 107 detects that the temperature level of the gear oil at the oil outlet of the motor is 75 ℃, the temperature signal is sent to the controller 103, and the controller 103 controls the alarm device 108 to give an alarm.
Optionally, the system 100 further comprises: an ambient temperature measuring device 109 communicatively coupled to the controller 103 for measuring an ambient temperature around the motor cooling system 100; and the controller 103 is configured to control the motor cooling system 100 to start when the ambient temperature is greater than or equal to the operating temperature, and control the motor cooling system 100 to stop operating when the ambient temperature is less than the operating temperature.
The ambient temperature measuring device 109 may be installed at a suitable position according to actual conditions, and the present specification is not particularly limited. The environment temperature measuring device 109 is used for measuring the temperature of the environment where the automobile is currently located, and then feeding back the measured environment temperature to the controller 103, and the controller 103 controls the system 100 to operate or stop according to the fed-back temperature. The working condition temperature can be set according to actual conditions. In cold environments, the ambient temperature may be sufficient to cool the motor, at which point the system 100 is not required to cool the motor, resulting in unnecessary waste. The controller 103 controls the system 100 to be turned on or off mainly by controlling the electric pump 105, the fan 1022 and the tension of each temperature measuring device. Taking the working condition temperature of 10 ℃ as an example, if the ambient temperature measured by the ambient temperature measuring device 109 is 13 ℃, after receiving the temperature signal sent by the ambient temperature measuring device 109, the controller controls the system 100 to start operating, so as to cool the motor.
Optionally, the liquid storage device 101 includes: and the pressure valve 1011 is arranged on the upper surface of the liquid storage device 101 and used for releasing the pressure of the motor cooling system 100 to a target pressure range when the pressure of the motor cooling system 100 is greater than a preset pressure.
The target pressure range is the pressure range in which the entire circulation system of the motor-motor cooling system 100 normally operates. When the motor cooling system 100 and the motor operate, the internal pressure of the system 100 is inevitably excessive due to the generation of some gases or high temperature, if the situation that the whole circulation system of the motor cooling system 100 fails due to excessive pressure is not treated for a long time, a pressure valve 1011 is installed on the upper surface of the liquid storage device 101, and when the pressure in the circulation system reaches a preset threshold value (namely, preset pressure), the pressure of the whole circulation system can be reduced to a target pressure range, so that the pressure of the whole circulation system is maintained at a normal level.
Optionally, the diverter valve 104 is a one-way diverter valve.
Optionally, the system 100, comprises: two second temperature measurement devices 107, and two motors, wherein, two second temperature measurement devices 107 correspond respectively and set up in the oil-out of two motors, and two motors are coaxial motors.
The technical scheme in the embodiment of the application at least has the following technical effects or advantages:
1. the temperature of the gear oil at the oil outlet of the radiator 1021 is measured through the first temperature measuring device 1023, the measured target temperature is sent to the controller 103, so that the controller 103 determines a fan control parameter, the controller 103 controls the fan 1022 to operate at different rotating speeds according to the fan control parameter, and the electric pump 105 is controlled to pump the gear oil at different powers, so that the effect that the cooling intensity of the motor cooling system 100 is matched with the motor temperature is achieved.
2. The one-way flow divider 104 is provided to distribute the cooled gear oil and the like to each motor in a proportional manner, thereby achieving the consistency of cooling power.
3. The liquid storage device 101 is arranged, so that the circulation of gear oil in the hub motor can be buffered, and the gear oil in the motor is prevented from being pumped out.
4. Gear oil is used as cooling liquid, a cooling circulating pipeline does not need to be arranged independently, and the method is simpler and more convenient.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. An electric machine cooling system, comprising:
the cooling system comprises a liquid storage device, a heat dissipation device, a controller and a flow dividing valve, wherein the liquid storage device is connected with the heat dissipation device through a first pipeline, the heat dissipation device is connected with the flow dividing valve through a second pipeline, the flow dividing valve is correspondingly connected with N motors through N third pipelines, the controller is in communication connection with the heat dissipation device, and N is a positive integer greater than 1; the gear oil to be cooled stored in the liquid storage device flows into the heat dissipation device through the first pipeline so that the heat dissipation device cools the gear oil to be cooled, and the cooled gear oil flows into the flow dividing valve through the second pipeline;
the controller is used for determining heat dissipation parameters according to the temperature of the gear oil at the target position;
the heat dissipation device is used for cooling the gear oil to be cooled according to the heat dissipation parameters;
the flow dividing valve is used for distributing the cooled gear oil to the N motors according to a preset proportion so as to cool the N motors.
2. The system of claim 1, wherein the system further comprises:
the electric pump is arranged on the first pipeline, is connected with the liquid storage device and the heat dissipation device, and is used for extracting the gear oil to be cooled in the liquid storage device at the rotating speed of the first electric pump and transmitting the gear oil to be cooled to the heat dissipation device;
the controller is connected with the electric pump and used for controlling the electric pump to pump the gear oil in the liquid storage device at a second electric pump rotating speed which is greater than the first electric pump rotating speed when the temperature of the gear oil is higher than the target oil temperature.
3. The system of claim 2, wherein the heat sink comprises:
the temperature measuring device and the fan are connected with the controller;
the radiator comprises an oil inlet and an oil outlet, the oil inlet is connected with the electric pump through the first pipeline, and the oil outlet is connected with the flow divider valve through the second pipeline and used for cooling the gear oil to be cooled;
the first temperature measuring device is arranged at the oil outlet and used for collecting the target temperature of the cooled gear oil and sending the target temperature to the controller;
the controller is used for determining a fan control parameter based on the received target temperature and sending the fan control parameter to the fan so as to drive the fan;
the air outlet of the fan is opposite to the radiator, and the fan is used for cooling the gear oil to be cooled according to the fan control parameters.
4. The system of claim 3, wherein the controller is to:
when the target temperature reaches a first oil temperature, determining the fan control parameter as a first rotating speed so that the fan cools the gear oil to be cooled at the first rotating speed;
and when the target temperature reaches a second oil temperature, determining the fan control parameter as a second rotating speed so that the fan cools the gear oil to be cooled at the second rotating speed, wherein the first oil temperature is less than the second oil temperature, and the first rotating speed is less than the second rotating speed.
5. The system of claim 2, wherein the system further comprises:
and the filtering device is connected with the electric pump and the heat dissipation device through the first pipeline and is used for filtering the gear oil from the electric pump.
6. The system of claim 1, wherein the system further comprises:
the N second temperature measuring devices are respectively and correspondingly arranged at oil outlets of the N motors, and each second temperature measuring device is in communication connection with the controller;
each second temperature measuring device is used for acquiring the temperature of the cooled gear oil at the corresponding motor oil outlet;
the controller is used for determining an alarm parameter when any one of the N second temperature measuring devices detects that the temperature of the cooled gear oil is higher than the preset temperature;
and the alarm device is connected with the controller and used for receiving the alarm parameters and giving an alarm according to the alarm parameters.
7. The system of claim 1, wherein the system further comprises:
the environment temperature measuring device is in communication connection with the controller and is used for measuring the environment temperature around the motor cooling system;
and the controller is used for controlling the motor cooling system to start when the environment temperature is greater than or equal to the working condition temperature, and controlling the motor cooling system to stop running when the environment temperature is less than the working condition temperature.
8. The system of claim 1, wherein the reservoir device comprises:
and the pressure valve is arranged on the liquid storage device and used for releasing the pressure of the motor cooling system to a target pressure range when the pressure of the motor cooling system is greater than a preset pressure.
9. The system of claim 1, wherein the diverter valve is a one-way diverter valve.
10. The system of claim 6, wherein the system comprises:
the two second temperature measuring devices and the two motors are arranged, wherein the two second temperature measuring devices are respectively and correspondingly arranged at oil outlets of the two motors, and the two motors are coaxial motors.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111274853.0A CN113937955A (en) | 2021-10-29 | 2021-10-29 | Motor cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111274853.0A CN113937955A (en) | 2021-10-29 | 2021-10-29 | Motor cooling system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113937955A true CN113937955A (en) | 2022-01-14 |
Family
ID=79284854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111274853.0A Pending CN113937955A (en) | 2021-10-29 | 2021-10-29 | Motor cooling system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113937955A (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106240341A (en) * | 2016-08-05 | 2016-12-21 | 武汉理工大学 | A kind of Over Electric Motor with PMSM cooling system and control method thereof |
| CN205960887U (en) * | 2016-08-26 | 2017-02-15 | 北京新能源汽车股份有限公司 | Driving motor heat abstractor and car |
| CN107683071A (en) * | 2017-09-28 | 2018-02-09 | 北京新能源汽车股份有限公司 | Automobile cooling system, control method and device and automobile |
| CN109435680A (en) * | 2018-09-19 | 2019-03-08 | 上海汽车集团股份有限公司 | Automotive power temperature control equipment and its control method |
| US20190165654A1 (en) * | 2017-11-24 | 2019-05-30 | Toyota Jidosha Kabushiki Kaisha | Cooling apparatus for rotating electrical machine |
| CN110239383A (en) * | 2019-05-31 | 2019-09-17 | 南京康尼机电股份有限公司 | The high-power charging cooling system of new-energy automobile and its monitoring method |
| CN111503252A (en) * | 2020-04-03 | 2020-08-07 | 武汉理工大学 | Electric wheel cooling system and method |
| CN112127982A (en) * | 2020-09-30 | 2020-12-25 | 郑州铁路职业技术学院 | Temperature early warning-based self-protection system and method for vehicle generator set |
| CN112234770A (en) * | 2019-07-15 | 2021-01-15 | 华为技术有限公司 | Oil-cooled motor control device and method |
| CN112455212A (en) * | 2020-12-04 | 2021-03-09 | 浙江吉利控股集团有限公司 | Cooling control method and system for vehicle electric driving cooling loop |
-
2021
- 2021-10-29 CN CN202111274853.0A patent/CN113937955A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106240341A (en) * | 2016-08-05 | 2016-12-21 | 武汉理工大学 | A kind of Over Electric Motor with PMSM cooling system and control method thereof |
| CN205960887U (en) * | 2016-08-26 | 2017-02-15 | 北京新能源汽车股份有限公司 | Driving motor heat abstractor and car |
| CN107683071A (en) * | 2017-09-28 | 2018-02-09 | 北京新能源汽车股份有限公司 | Automobile cooling system, control method and device and automobile |
| US20190165654A1 (en) * | 2017-11-24 | 2019-05-30 | Toyota Jidosha Kabushiki Kaisha | Cooling apparatus for rotating electrical machine |
| CN109435680A (en) * | 2018-09-19 | 2019-03-08 | 上海汽车集团股份有限公司 | Automotive power temperature control equipment and its control method |
| CN110239383A (en) * | 2019-05-31 | 2019-09-17 | 南京康尼机电股份有限公司 | The high-power charging cooling system of new-energy automobile and its monitoring method |
| CN112234770A (en) * | 2019-07-15 | 2021-01-15 | 华为技术有限公司 | Oil-cooled motor control device and method |
| CN111503252A (en) * | 2020-04-03 | 2020-08-07 | 武汉理工大学 | Electric wheel cooling system and method |
| CN112127982A (en) * | 2020-09-30 | 2020-12-25 | 郑州铁路职业技术学院 | Temperature early warning-based self-protection system and method for vehicle generator set |
| CN112455212A (en) * | 2020-12-04 | 2021-03-09 | 浙江吉利控股集团有限公司 | Cooling control method and system for vehicle electric driving cooling loop |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105756763B (en) | A kind of cooling system of vehicle and its control method, the vehicle equipped with the system | |
| CN110549840B (en) | Electric transmission engineering machinery cooling system and control method and control device thereof | |
| CN109649156B (en) | Self-adaptive adjustment electric automobile cooling system and control method thereof | |
| CN205846986U (en) | Water cooled heat radiating motor | |
| CN204956082U (en) | A cooling system , and electric automobile for electric automobile electric system | |
| EP4043726A1 (en) | Air cooling system, wind turbine generator unit and cooling method therefor | |
| JP2012126191A (en) | Hybrid vehicle | |
| CN107781330A (en) | Vehicle matches the cooling system and automobile of Retarder | |
| CN113783360A (en) | Cooling system for electric drive system | |
| CN109958608B (en) | Transmission cooling water pump control method, transmission cooling system and vehicle | |
| CN108583473A (en) | Intelligent mixed power automobile, fan cooling system and method | |
| CN214125080U (en) | Novel cooling device for double-motor gearbox | |
| CN113937955A (en) | Motor cooling system | |
| CN103522892B (en) | Vehicle cooling system and cooling control method | |
| CN109742903B (en) | Vehicle, hub motor heat dissipation system thereof and hub motor heat dissipation method | |
| CN104571182A (en) | Electro-hydraulic hybrid-driven intelligent cooling system | |
| CN214788968U (en) | Gear box temperature control system in double-fed wind generating set | |
| CN209838513U (en) | Unmanned helicopter engine cooling system | |
| CN115648887A (en) | Control method and device for heat distribution of electric vehicle, storage medium and equipment | |
| CN114695981A (en) | Vehicle battery thermal management control method and device and vehicle | |
| CN117345844A (en) | Transmission cooling system, control method of transmission cooling system, and vehicle | |
| CN211145306U (en) | Cooling device of hybrid power gearbox | |
| CN209130161U (en) | Electricity drives gearbox cooling and lubricating system | |
| CN206383803U (en) | Cooling system for vehicle and vehicle with cooling system | |
| CN211039630U (en) | Fork truck transmission cooling system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220114 |