Low-temperature permanent magnet motor and working method thereof

Abstract

The invention belongs to the technical field of motors, and particularly relates to cooling of motors, in particular to a low-temperature permanent magnet motor and a working method thereof.The low-temperature permanent magnet motor comprises a motor body and a temperature adjusting mechanism arranged outside the motor body; the motor body is suitable for driving a load; the temperature adjusting mechanism is configured to adjust the temperature in the motor body according to the working condition of the motor body, so that the interior of the motor body reaches a certain temperature through the temperature adjusting mechanism before the motor body is started, and the situation that the performance of lubricating oil is affected due to low temperature when the motor body is started is avoided. And the influence on the performance of the motor body caused by the influence on the performance of the lubricating oil is avoided.

Description

Technical Field

[0001] The present invention belongs to the technical field of motors, and specifically relates to cooling of motors, and in particular to a low-temperature permanent magnet motor and a working method thereof. Background Art

[0002] Before starting the low-temperature permanent magnet motor, the temperature inside the motor needs to reach a certain level. Otherwise, the performance of the lubricating oil inside the motor will be affected by the low temperature, such as increased viscosity, reduced fluidity, decreased wear resistance and poor sealing. When the performance of the lubricating oil is affected, starting the motor will affect the internal structure of the motor, such as increased wear, rough rotation, etc., causing the output performance of the motor to be affected due to rough rotation.

[0003] Therefore, due to the technical problem that the motor performance is affected by low-temperature starting, it is necessary to design a low-temperature permanent magnet motor and a working method thereof.

[0004] It should be noted that the above information disclosed in this background technology section is only used to understand the background technology of the present application concept, and therefore, the above description is not considered to constitute information of the prior art. Summary of the invention

[0005] The embodiments of the present disclosure at least provide a low-temperature permanent magnet motor and a working method thereof.

[0006] In a first aspect, an embodiment of the present disclosure provides a low temperature permanent magnet motor, comprising: A motor body, and a temperature regulating mechanism arranged outside the motor body; The motor body is suitable for driving a load; The temperature regulating mechanism is configured to regulate the temperature inside the motor body according to the working condition of the motor body; the temperature regulating mechanism comprises: a housing component and a plurality of heating components; The heating component is arranged on the outer wall of the motor body and is arranged circumferentially along the outer wall of the motor body; The length direction of the heating component is parallel to the length direction of the motor body; The housing component is disposed outside the motor body to cover the heating component; The heating component and the motor body are both electrically connected to a control module, and the control module is suitable for controlling the heating component to heat the motor body according to the working condition of the motor body.

[0007] In an optional embodiment, the housing assembly includes: a housing; The housing cover is arranged outside the motor body; A groove matching the heating component is provided on one surface of the shell close to the outer wall of the motor body, and the groove cover is arranged on the corresponding heating component; The inner wall of the groove is arc-shaped, the arc is arched in a direction away from the motor body, and a heat-insulating layer is arranged on the inner wall of the groove.

[0008] In an optional embodiment, a plurality of chambers are provided in the shell, the chambers are arranged along the axial direction of the shell, and the chambers are arranged inside the shell along the circumferential direction of the shell; The total area of ​​all chamber sections on the cross section of the shell accounts for 92% of the total cross-sectional area of ​​the shell; The chamber is in the shape of an elongated strip; The chamber is arranged farther away from the motor body than the groove; A half of the arched portion corresponding to one groove protrudes toward the inside of one cavity, and one cavity corresponds to two arched portions corresponding to two adjacent grooves.

[0009] In an optional embodiment, a first ring body and a second ring body are provided in the shell, the first ring body is close to one end surface of the shell, and the second ring body is close to the other end surface of the shell; The groove is arranged between the first ring body and the second ring body; The chamber is disposed between the first ring body and the second ring body; One end of the chamber is in communication with the first ring body, and the other end of the chamber is in communication with the second ring body; A liquid storage cavity is formed at the bottom of the shell, and the liquid storage cavity is communicated with both the first ring body and the second ring body; The liquid storage cavity stores cooling liquid; A water pump is provided at the connection point between the first ring body and the liquid storage chamber. The water pump is electrically connected to the control module. The control module is configured to control the water pump to draw the coolant in the liquid storage chamber into the first ring body, so that the coolant flows through the chamber and then flows back into the liquid storage chamber from the second ring body.

[0010] In an optional embodiment, a temperature sensor is provided at the connection between the second ring body and the liquid storage chamber, the temperature sensor is electrically connected to a control module, and the control module is configured to control the frequency of the water pump according to the coolant temperature detected by the temperature sensor.

[0011] In an optional embodiment, the control module is configured to control the operation of the heating component before the motor body is started, and no coolant is introduced into the chamber. After the temperature reaches a preset temperature required for starting the motor body, the control module controls the heating component to stop working and controls the motor body to start. After the motor body is started, the control module controls the water pump to pump coolant into the chamber, and the control module controls the frequency of the water pump according to the coolant temperature detected by the temperature sensor.

[0012] In an optional embodiment, a plurality of ridges are arranged on a surface of the chamber close to the motor body, the ridges are arranged along the length direction of the chamber, and the ridges are arranged equidistantly in the width direction of the chamber; The chamber in the upper part of the shell has an end connected with the first ring body which is farther away from the motor body than the end connected with the second ring body.

[0013] In an optional embodiment, the housing is connected to a driving mechanism, and the driving mechanism is electrically connected to the control module; A heat-conducting layer is provided at a position on a surface of the housing close to the motor body where no groove is provided; The control module is configured to control the driving mechanism to drive the shell to rotate after the motor body stops working, so that the heat conductive layer contacts the heating component, and at this time the control module controls the heating component to work.

[0014] In an optional embodiment, the temperature adjustment mechanism includes: a housing assembly; The housing assembly comprises: a housing; A plurality of chambers are provided in the shell; The housing is connected to a driving mechanism, and the driving mechanism is electrically connected to the control module; The control module is configured to control the operation of the heating component before the motor body is started, and no coolant is introduced into the chamber at this time. After the temperature reaches the preset temperature required for starting the motor body, the control module controls the heating component to stop working and controls the motor body to start. After the motor body is started, the control module controls the water pump to pump coolant into the chamber, and the control module controls the frequency of the water pump according to the coolant temperature detected by the temperature sensor. After the motor body stops working, the control driving mechanism drives the shell to rotate so that the heat conductive layer on the motor body contacts the heating component, and at this time the control module controls the heating component to work.

[0015] In a second aspect, the embodiments of the present disclosure further provide a working method using the above-mentioned low-temperature permanent magnet motor, comprising: The temperature regulating mechanism regulates the temperature inside the motor body according to the working condition of the motor body.

[0016] The beneficial effect of the present invention is that the low-temperature permanent magnet motor comprises: a motor body, and a temperature regulating mechanism arranged outside the motor body; the motor body is suitable for driving a load; the temperature regulating mechanism is configured to adjust the temperature inside the motor body according to the working condition of the motor body, thereby achieving that before the motor body is started, the temperature regulating mechanism is used to make the inside of the motor body reach a certain temperature, thereby avoiding that the lubricating oil performance of the motor body is affected by the low temperature when the motor body is started, thereby avoiding that the performance of the motor body is affected due to the affected lubricating oil performance.

[0017] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description and the drawings.

[0018] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, this article specifically cites preferred embodiments and provides detailed descriptions as follows in conjunction with the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 A schematic diagram of the structure of a low-temperature permanent magnet motor provided by an embodiment of the present disclosure; Figure 2 A cross-sectional view of a housing assembly provided in an embodiment of the present disclosure; Figure 3 A cross-sectional view of a low-temperature permanent magnet motor provided by an embodiment of the present disclosure; Figure 4 A schematic diagram of the structure of a convex ridge provided in an embodiment of the present disclosure; Figure 5 A principle block diagram of a low-temperature permanent magnet motor provided in an embodiment of the present disclosure.

[0021] In the figure: 1 temperature adjustment mechanism, 11 housing assembly, 111 housing, 112 groove, 113 chamber, 114 liquid storage chamber, 115 first ring body, 116 second ring body, 117 convex ridge; 2. Motor body; 3. Driving mechanism. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] As used herein, the phrases "in one embodiment," "according to one embodiment," "in some embodiments," and the like generally refer to the fact that the particular feature, structure, or characteristic following the phrase may be included in at least one embodiment of the present disclosure. Therefore, a particular feature, structure, or characteristic may be included in more than one embodiment of the present disclosure, so that these phrases do not necessarily refer to the same embodiment. As used herein, the terms "example," "exemplary," and the like are used to "serve as an example, instance, or illustration." Any implementation, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as preferred or superior to other implementations, aspects, or designs. On the contrary, the use of the terms "example," "exemplary," and the like is intended to present concepts in a concrete manner.

[0024] Under low temperature conditions, the performance of the lubricating oil inside the motor body will be affected by the low temperature, such as increased viscosity, reduced fluidity, decreased wear resistance and poor sealing. When the performance of the lubricating oil is affected, starting the motor body will cause the internal structure of the motor body to be affected, such as increased wear, rough rotation, etc. If the output shaft of the motor body rotates rough, the output performance of the motor body will be affected.

[0025] The defects existing in the above solutions are the results obtained by the inventor after practice and careful research. Therefore, the discovery process of the above problems and the solutions proposed by the present invention in this article for the above problems should be the contributions made by the inventor to the present invention during the disclosure process.

[0026] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0027] Some embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0028] like Figure 1 As shown, at least one disclosed embodiment provides a low-temperature permanent magnet motor, comprising: a motor body 2, and a temperature control mechanism 1 arranged outside the motor body 2; the motor body 2 is suitable for driving a load; the temperature control mechanism 1 is configured to adjust the temperature inside the motor body 2 according to the working condition of the motor body 2, thereby achieving that before the motor body 2 is started, the temperature control mechanism 1 is used to make the inside of the motor body 2 reach a certain temperature, thereby avoiding that the lubricating oil performance of the motor body 2 is affected due to the low temperature when the motor body 2 is started, thereby avoiding that the performance of the motor body 2 is affected due to the affected lubricating oil performance.

[0029] In an optional embodiment, the temperature control mechanism 1 includes: a shell component 11 and a plurality of heating components; the heating components are arranged on the outer wall of the motor body 2 and are arranged circumferentially along the outer wall of the motor body 2; the length direction of the heating components is parallel to the length direction of the motor body 2; the length of the heating components can be slightly shorter than the length of the motor body 2 to better heat the inside of the motor body 2; the shell component 11 is arranged outside the motor body 2 to cover the heating components; Figure 5 As shown, the heating component and the motor body 2 are both electrically connected to a control module, and the control module is suitable for controlling the heating component to heat the inside of the motor body 2 according to the working condition of the motor body 2 .

[0030] In this embodiment, the housing assembly 11 covers the heating assembly to prevent the heat generated by the heating assembly from being dissipated, thereby increasing the heating effect of the heating assembly on the inside of the motor body 2 and shortening the time required for heating the inside of the motor body 2 .

[0031] In this embodiment, the heating element may be a heating wire.

[0032] like Figure 2 As shown, in an optional embodiment, the shell assembly 11 includes: a shell 111; the shell 111 is covered outside the motor body 2; a groove 112 matching the heating component is opened on one side of the shell 111 close to the outer wall of the motor body 2, and the groove 112 is covered on the corresponding heating component; the inner wall of the groove 112 is arc-shaped, and the arc is arched away from the motor body 2, and an insulation layer is provided on the inner wall of the groove 112.

[0033] In this embodiment, the material of the insulation layer can be metal foil, metal oxide film and multilayer film, etc. The insulation layer can prevent heat from being dissipated from the shell 111 when the heating component is working, thereby increasing the heating effect inside the motor body 2.

[0034] In this embodiment, a sensor is disposed inside the motor body 2 to detect the temperature. The sensor can be electrically connected to the control module to detect the temperature inside the motor body 2 in real time.

[0035] like Figure 2 As shown, in an optional embodiment, a plurality of chambers 113 are opened in the shell 111, and the chambers 113 are arranged along the axial direction of the shell 111, and the chambers 113 are arranged inside the shell 111 along the circumferential direction of the shell 111; the chambers 113 are in the shape of an elongated strip; the chambers 113 are arranged away from the motor body 2 compared to the grooves 112; half of the arched portion corresponding to a groove 112 protrudes into a chamber 113, and one chamber 113 corresponds to arched portions corresponding to two adjacent grooves 112.

[0036] In this embodiment, the total area of ​​all the chambers 113 on the cross section of the shell 111 can account for up to 92% of the total area of ​​the shell cross section. For example, the shell 111 is made of 6-series aluminum alloy, and the cross section of the shell 111 can be a circular ring. Assume that the outer diameter R of the solid circular ring of the shell 111 cross section is 250 mm, the thermal conductivity k of the 6-series aluminum alloy is 167 W / (m·K), the inner ring temperature T1 is 80°C when the motor body 2 is running, and the temperature T2 of the outer ring in contact with the external environment is 0°C. The inner radius of the hollow circular ring approximated by connecting all the chambers 113 cross sections is r. To reduce the heat conduction rate to 8% of the solid circular ring, it can be calculated according to Borie's law. For a solid circular ring, the heat conduction rate is Q0, and for a hollow circular ring, the heat conduction rate is Q, Q / Q0=8%, that is, π(R 2 -r 2 ) / πR 2 =0.08, then r is approximately equal to 237.17 mm, and the cross-sectional area of ​​the hollow ring accounts for 92% of the cross-sectional area of ​​the solid ring. In order to ensure the strength of the shell 111, the maximum proportion of the hollow ring is 92%.

[0037] In this embodiment, when the motor body 2 is heated by the heating assembly before starting, there is no coolant in the chamber 113. At this time, the gas in the chamber 113 acts as an air interlayer, that is, it keeps warm and avoids heat dissipation.

[0038] In this embodiment, the total volume of all chambers 113 can occupy more than 80% of the volume inside the shell 111 except the liquid storage chamber 114, so as to increase the thermal insulation effect of the air interlayer and increase the heating effect inside the motor body 2.

[0039] In this embodiment, the material between the groove 112 and the chamber 113 may have a certain degree of elasticity. When the pressure of the coolant in the chamber 113 is too high, the coolant squeezes the portion of the groove 112 that protrudes into the interior of the chamber 113. This portion is squeezed out of the chamber 113 and deformed, thereby increasing the volume of the chamber 113 and preventing the shell 111 from being deformed due to excessive pressure when the coolant flows.

[0040] like Figure 3As shown, in an optional embodiment, the housing 111 is provided with a first ring body 115 and a second ring body 116, the first ring body 115 is close to one end surface of the housing 111, and the second ring body 116 is close to the other end surface of the housing 111; the groove 112 is provided between the first ring body 115 and the second ring body 116; the chamber 113 is provided between the first ring body 115 and the second ring body 116; one end of the chamber 113 is communicated with the first ring body 115, and the other end of the chamber 113 is communicated with the second ring body The shell 111 is connected with the first ring body 116; a liquid storage chamber 114 is provided at the bottom of the shell 111, and the liquid storage chamber 114 is connected with both the first ring body 115 and the second ring body 116; the liquid storage chamber 114 stores cooling liquid; a water pump is provided at the connection between the first ring body 115 and the liquid storage chamber 114, and the water pump is electrically connected with the control module, and the control module is configured to control the water pump to pump the cooling liquid in the liquid storage chamber 114 into the first ring body 115, so that the cooling liquid flows through the chamber 113 and then flows back into the liquid storage chamber 114 from the second ring body 116.

[0041] In this embodiment, the first ring body 115 and the second ring body 116 allow the liquid storage chamber 114 and the chamber 113 to be connected, so that the coolant can circulate. When the motor body 2 needs to dissipate heat after starting, the coolant can be used to dissipate heat. When the coolant flows through the chamber 113, the heat in the motor body 2 can be discharged, and the air outside the shell 111 can transfer the heat absorbed by the coolant in the chamber 113, which helps to cool the coolant and improve the heat dissipation effect.

[0042] In an optional embodiment, a temperature sensor is provided at the connection between the second ring body 116 and the liquid storage chamber 114, and the temperature sensor is electrically connected to the control module. The control module is configured to control the frequency of the water pump according to the coolant temperature detected by the temperature sensor to regulate the flow rate and flow of the coolant.

[0043] In an optional embodiment, the control module is configured to control the operation of the heating component before the motor body 2 is started, and no coolant is introduced into the chamber 113 at this time. After the temperature reaches the preset temperature required for starting the motor body 2, the control module controls the heating component to stop working and controls the motor body 2 to start. After the motor body 2 is started, the control module controls the water pump to pump the coolant into the chamber 113, and the control module controls the frequency of the water pump according to the coolant temperature detected by the temperature sensor.

[0044] In this embodiment, before the motor body 2 starts, the control module controls the heating component to heat up. At this time, the heat generated by the heating component enters the motor body 2, thereby increasing the temperature inside the motor body 2, and avoiding the performance of the lubricating oil being affected when the temperature inside the motor body 2 is too low. The control module controls the heating component to stop working according to the temperature inside the motor body 2, that is, after the temperature inside the motor body 2 is raised to a preset temperature, the control module controls the heating component to stop working, and at this time the control module controls the motor body 2 to start.

[0045] In this embodiment, after the motor body 2 is started, the control module can also obtain the temperature inside the motor body 2 in real time. When the temperature inside the motor body 2 rises to the temperature corresponding to the temperature required for heat dissipation, the control module controls the water pump to start, and pumps the coolant in the liquid storage chamber 114 into the chamber 113. The coolant begins to circulate to cool the motor body 2. At this time, the temperature sensor detects the temperature of the connection between the second ring body 116 and the liquid storage chamber 114 in real time, that is, detects the temperature of the liquid outlet of the chamber 113, and obtains the temperature of the coolant at the liquid outlet in real time. The cooling effect is judged in real time by combining this temperature with the temperature inside the motor body 2. If the temperature of the liquid outlet is still increasing, it is judged that the efficiency of the water pump needs to be improved, and the flow rate and flow of the coolant need to be increased to improve the cooling effect.

[0046] like Figure 4 As shown, in an optional embodiment, a plurality of ridges 117 are provided on a surface of the chamber 113 close to the motor body 2, and the ridges 117 are arranged along the length direction of the chamber 113, and the ridges 117 are arranged equidistantly in the width direction of the chamber 113; the chamber 113 in the upper part of the shell 111, the end of which is connected to the first ring body 115 is farther away from the motor body 2 than the end connected to the second ring body 116.

[0047] In this embodiment, the upper part of the chamber 113 may be the uppermost third. By tilting the chamber 113, the coolant in the chamber 113 can flow better into the second ring body 116, thereby avoiding coolant remaining in the chamber 113 after the water pump stops.

[0048] In this embodiment, the ridge 117 can break the tension of the liquid in the chamber 113, so that the liquid can flow more smoothly into the second ring body 116 and then into the liquid storage chamber 114. The portion of the ridge 117 away from the motor body 2 can be sharp to better break the tension.

[0049] In an optional embodiment, the shell 111 is connected to a driving mechanism 3, and the driving mechanism 3 is electrically connected to the control module; a heat-conducting layer is provided at a position on a surface of the shell 111 close to the motor body 2 where the groove 112 is not provided; the control module is configured to control the driving mechanism 3 to drive the shell 111 to rotate after the motor body 2 stops working, so that the heat-conducting layer contacts the heating component, and at this time the control module controls the heating component to work.

[0050] In this embodiment, the driving mechanism 3 may be composed of a motor and a transmission assembly to better drive the housing 111 to rotate.

[0051] In this embodiment, the heat-conducting layer may be thermal grease, a thermally conductive gasket, or the like.

[0052] In this embodiment, when the motor body 2 stops working, the control module controls the driving mechanism 3 to drive the shell 111 to rotate, so that the heat conductive layer contacts the heating component. At this time, the control module controls the water pump to stop working and controls the heating component to start working. The heat generated by the heating component enters the shell 111 through the heat conductive layer and is transmitted into the chamber 113. The tension of the coolant is destroyed by heating the coolant in the chamber 113, so that the coolant can better flow into the second ring body 116 and into the liquid storage chamber 114, avoiding residual coolant in the chamber 113. When there is no liquid in the chamber 113, the gas in the chamber 113 can play a role of insulation.

[0053] In this embodiment, the temperature control mechanism 1 includes: a shell component 11; the shell component 11 includes: a shell 111; a plurality of chambers 113 are opened in the shell 111; the shell 111 is connected to a drive mechanism 3, and the drive mechanism 3 is electrically connected to the control module; the control module is configured to control the heating component to work before the motor body 2 is started, and no coolant is passed into the chamber 113 at this time. After the temperature reaches the preset temperature required for the motor body 2 to start, the control module controls the heating component to stop working and controls the motor body 2 to start. After the motor body 2 is started, the control module controls the water pump to pump the coolant into the chamber 113, and the control module controls the frequency of the water pump according to the coolant temperature detected by the temperature sensor. After the motor body 2 stops working, the drive mechanism 3 is controlled to drive the shell 111 to rotate, so that the heat conductive layer on the motor body 2 contacts the heating component, and at this time the control module controls the heating component to work.

[0054] At least one other disclosed embodiment further provides a working method using the above-mentioned low-temperature permanent magnet motor, including: a temperature regulating mechanism 1 adjusts the temperature inside the motor body 2 according to the working condition of the motor body 2 .

[0055] To sum up, the low-temperature permanent magnet motor includes: a motor body 2, and a temperature control mechanism 1 arranged outside the motor body 2; the motor body 2 is suitable for driving a load; the temperature control mechanism 1 is configured to adjust the temperature inside the motor body 2 according to the working condition of the motor body 2, thereby achieving that before the motor body 2 is started, the temperature control mechanism 1 makes the inside of the motor body 2 reach a certain temperature, thereby avoiding that the lubricating oil performance of the motor body 2 is affected due to the low temperature when the motor body 2 is started, thereby avoiding that the performance of the motor body 2 is affected due to the affected lubricating oil performance.

[0056] In the description of the embodiments of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0057] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, terms such as "first", "second" and other numerical terms do not imply an order or sequence when used in this document unless explicitly indicated above. Therefore, without departing from the teachings of the example embodiments, the first element, component, region, layer or section discussed above may be referred to as a second element, component, region, layer or section.

[0058] Spatially relative terms, such as "inside", "outside", "below", "below", "down", "above", "on", etc., may be used herein to facilitate description of the relationship of one element or feature to another element or feature as illustrated in the figure. In addition to the orientation depicted in the figure, spatially relative terms may be intended to cover different orientations of the device in use or operation. For example, if the device in the figure is turned over, the elements described as "below" or "below" other elements or features will be oriented to be "above" other elements or features. Therefore, the example term "below" can cover the orientation above and below. The device can be oriented in other ways (rotated 90 degrees or in other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0059] Based on the above ideal embodiments of the present invention, the relevant staff can make various changes and modifications without departing from the technical concept of the present invention through the above description. The technical scope of the present invention is not limited to the contents of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A low temperature permanent magnet motor, characterized in that: include: A motor body (2), and a temperature adjustment mechanism (1) arranged outside the motor body (2); The motor body (2) is suitable for driving a load; The temperature regulating mechanism (1) is configured to regulate the temperature inside the motor body (2) according to the working condition of the motor body (2); The temperature adjustment mechanism (1) comprises: a housing component (11) and a plurality of heating components; The heating component is arranged on the outer wall of the motor body (2) and is arranged along the circumference of the outer wall of the motor body (2); The length direction of the heating component is parallel to the length direction of the motor body (2); The housing component (11) is disposed outside the motor body (2) to cover the heating component; The heating component and the motor body (2) are both electrically connected to a control module, and the control module is suitable for controlling the heating component to heat the inside of the motor body (2) according to the working condition of the motor body (2).

2. The low temperature permanent magnet motor according to claim 1, characterized in that: The housing assembly (11) comprises: a housing (111); The housing (111) is disposed outside the motor body (2); A groove (112) matching the heating component is provided on a surface of the shell (111) close to the outer wall of the motor body (2), and the groove (112) is covered on the corresponding heating component; The inner wall of the groove (112) is arc-shaped, the arc arches in a direction away from the motor body (2), and a heat-insulating layer is provided on the inner wall of the groove (112).

3. The low temperature permanent magnet motor according to claim 2, characterized in that: A plurality of chambers (113) are provided in the shell (111), the chambers (113) are arranged along the axial direction of the shell (111), and the chambers (113) are arranged inside the shell (111) along the circumferential direction of the shell (111); The total cross-sectional area of ​​all chambers (113) on the cross-sectional area of ​​the shell (111) accounts for 92% of the total cross-sectional area of ​​the shell; The chamber (113) is in the shape of an elongated strip; The chamber (113) is arranged farther away from the motor body (2) than the groove (112); A half of the arched portion corresponding to a groove (112) protrudes into a chamber (113), and a chamber (113) has arched portions corresponding to two adjacent grooves (112).

4. The low temperature permanent magnet motor according to claim 3, characterized in that: A first ring body (115) and a second ring body (116) are provided in the shell (111), wherein the first ring body (115) is close to one end surface of the shell (111), and the second ring body (116) is close to the other end surface of the shell (111); The groove (112) is arranged between the first ring body (115) and the second ring body (116); The chamber (113) is arranged between the first ring body (115) and the second ring body (116); One end of the chamber (113) is in communication with the first ring body (115), and the other end of the chamber (113) is in communication with the second ring body (116); A liquid storage cavity (114) is provided at the bottom of the shell (111), and the liquid storage cavity (114) is in communication with both the first ring body (115) and the second ring body (116); The liquid storage chamber (114) stores cooling liquid; A water pump is provided at the connection point between the first ring body (115) and the liquid storage chamber (114); the water pump is electrically connected to a control module; the control module is configured to control the water pump to draw the coolant in the liquid storage chamber (114) into the first ring body (115), so that the coolant flows through the chamber (113) and then flows back into the liquid storage chamber (114) from the second ring body (116).

5. The low temperature permanent magnet motor according to claim 4, characterized in that: A temperature sensor is provided at the connection point between the second ring body (116) and the liquid storage chamber (114); the temperature sensor is electrically connected to a control module; and the control module is configured to control the frequency of the water pump according to the coolant temperature detected by the temperature sensor.

6. The low temperature permanent magnet motor according to claim 5, characterized in that: The control module is configured to control the heating component to operate before the motor body (2) is started, at which time no coolant is introduced into the chamber (113); after the temperature reaches a preset temperature required for starting the motor body (2), the control module controls the heating component to stop operating and controls the motor body (2) to start; after the motor body (2) is started, the control module controls the water pump to pump the coolant into the chamber (113), and the control module controls the frequency of the water pump according to the coolant temperature detected by the temperature sensor.

7. The low temperature permanent magnet motor according to claim 4, characterized in that: A plurality of ridges (117) are arranged on a surface of the chamber (113) close to the motor body (2); the ridges (117) are arranged along the length direction of the chamber (113), and the ridges (117) are arranged at equal distances in the width direction of the chamber (113); The chamber (113) at the upper portion of the housing (111) has an end connected to the first ring body (115) that is further away from the motor body (2) than an end connected to the second ring body (116).

8. The low temperature permanent magnet motor according to claim 4, characterized in that: The housing (111) is connected to a driving mechanism (3), and the driving mechanism (3) is electrically connected to a control module; A heat-conducting layer is provided at a position on a surface of the shell (111) close to the motor body (2) where the groove (112) is not provided; The control module is configured to control the drive mechanism (3) to drive the housing (111) to rotate after the motor body (2) stops working, so that the heat-conducting layer contacts the heating component, and at this time the control module controls the heating component to work.

9. The low temperature permanent magnet motor according to claim 1, characterized in that: The temperature adjustment mechanism (1) comprises: a housing component (11); The housing assembly (11) comprises: a housing (111); A plurality of chambers (113) are provided in the housing (111); The housing (111) is connected to a driving mechanism (3), and the driving mechanism (3) is electrically connected to a control module; The control module is configured to control the heating component to operate before the motor body (2) is started, at which time no coolant is introduced into the chamber (113); after the temperature reaches a preset temperature required for starting the motor body (2), the control module controls the heating component to stop operating and controls the motor body (2) to start; after the motor body (2) is started, the control module controls the water pump to pump coolant into the chamber (113), and the control module controls the frequency of the water pump according to the coolant temperature detected by the temperature sensor; after the motor body (2) stops operating, the control module controls the driving mechanism (3) to drive the housing (111) to rotate, so that the heat-conducting layer on the motor body (2) contacts the heating component, and at this time the control module controls the heating component to operate.

10. A working method using the low temperature permanent magnet motor as claimed in claim 1, characterized in that: include: The temperature regulating mechanism (1) regulates the temperature inside the motor body (2) according to the working condition of the motor body (2); in The temperature adjustment mechanism (1) comprises: a housing component (11) and a plurality of heating components; The heating component is arranged on the outer wall of the motor body (2) and is arranged along the circumference of the outer wall of the motor body (2); The length direction of the heating component is parallel to the length direction of the motor body (2); The housing component (11) is disposed outside the motor body (2) to cover the heating component; The heating component and the motor body (2) are both electrically connected to a control module, and the control module is suitable for controlling the heating component to heat the inside of the motor body (2) according to the working condition of the motor body (2), thereby adjusting the temperature inside the motor body (2).

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