Low-temperature permanent magnet motor and its working method

Abstract

The present invention belongs to the technical field of motors, specifically relates to the cooling of motors, and particularly relates to a low-temperature permanent magnet motor and its working method. The low-temperature permanent magnet motor includes: a motor body, and a temperature regulating mechanism arranged outside the motor body; the motor body is adapted to drive a load; the temperature regulating mechanism is configured to adjust the temperature inside the motor body according to the working conditions of the motor body, thereby achieving that before the motor body starts, the inside of the motor body reaches a certain temperature through the temperature regulating mechanism, avoiding the influence on the performance of the lubricating oil due to low temperature when the motor body starts, and further avoiding the influence on the performance of the motor body caused by the influence on the performance of the lubricating oil.

Description

Technical Field

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

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

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

[0004] It should be noted that the above information disclosed in this background art section is only used to understand the background art of the concept of this application. Therefore, the above description is not considered as 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 its working method.

[0006] In a first aspect, the embodiments of the present disclosure provide a low-temperature permanent magnet motor, including:

[0007] A motor body, and a temperature regulating mechanism arranged outside the motor body;

[0008] The motor body is adapted to drive a load;

[0009] The temperature regulating mechanism is configured to regulate the temperature inside the motor body according to the operating conditions of the motor body; the temperature regulating mechanism includes: a housing assembly and a plurality of heating components;

[0010] The heating components are arranged on the outer wall of the motor body and are arranged circumferentially along the outer wall of the motor body;

[0011] The length direction of the heating components is parallel to the length direction of the motor body;

[0012] The housing assembly covers the outside of the motor body to cover the heating components;

[0013] The heating components and the motor body are both electrically connected to a control module, and the control module is adapted to control the heating components to heat the inside of the motor body according to the operating conditions of the motor body.

[0014] In an optional embodiment, the housing assembly includes: a housing;

[0015] The housing covers the motor body outside.

[0016] On one side of the housing close to the outer wall of the motor body, a groove matching the heating component is provided, and the groove covers the corresponding heating component.

[0017] The inner wall of the groove is arc-shaped, the arc arches away from the motor body, and a heat preservation layer is provided on the inner wall of the groove.

[0018] In an optional implementation manner, a plurality of chambers are provided in the housing, the chambers are arranged along the axial direction of the housing, and the chambers are arranged along the circumferential direction of the housing inside the housing.

[0019] The total area of the cross-sections of all the chambers in the cross-section of the housing accounts for 92% of the total area of the cross-section of the housing.

[0020] The chambers are strip-shaped.

[0021] The chambers are arranged farther away from the motor body than the grooves.

[0022] Half of the arched part corresponding to one groove protrudes into one chamber, and one chamber corresponds to the arched parts corresponding to two adjacent grooves.

[0023] In an optional implementation manner, a first ring body and a second ring body are provided in the housing, the first ring body is close to one end face of the housing, and the second ring body is close to the other end face of the housing.

[0024] The grooves are provided between the first ring body and the second ring body.

[0025] The chambers are provided between the first ring body and the second ring body.

[0026] One end of the chamber is communicated with the first ring body, and the other end of the chamber is communicated with the second ring body.

[0027] A liquid storage chamber is provided at the bottom of the housing, and the liquid storage chamber is communicated with both the first ring body and the second ring body.

[0028] Coolant is stored in the liquid storage chamber.

[0029] A water pump is provided at the connection 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 pump the coolant in the liquid storage chamber into the first ring body, so that the coolant flows through the chamber and then re-enters the liquid storage chamber from the second ring body.

[0030] In an alternative embodiment, a temperature sensor is provided at the connection between the second annular 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.

[0031] In an alternative embodiment, the control module is configured to control the heating component to operate before the motor body starts. At this time, no coolant is introduced into the chamber. After the temperature reaches the preset temperature required for the motor body to start, the control module controls the heating component to stop working and controls the motor body to start. After the motor body starts, the control module controls the water pump to pump the 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.

[0032] In an alternative embodiment, a number of convex ridges are provided on the surface of the chamber close to the motor body. The convex ridges are arranged along the length direction of the chamber, and the convex ridges are equidistantly arranged in the width direction of the chamber;

[0033] For the chamber in the upper part of the housing, the end of this part of the chamber connected to the first annular body is farther from the motor body than the end connected to the second annular body.

[0034] In an alternative embodiment, the housing is connected to a driving mechanism, and the driving mechanism is electrically connected to the control module;

[0035] A heat conduction layer is provided at the position on the surface of the housing close to the motor body where no groove is provided;

[0036] The control module is configured to control the driving mechanism to drive the housing to rotate after the motor body stops working, so that the heat conduction layer contacts the heating component, and at this time the control module controls the heating component to work.

[0037] In an alternative embodiment, the temperature control mechanism includes: a housing assembly;

[0038] The housing assembly includes: a housing;

[0039] A number of chambers are provided in the housing;

[0040] The housing is connected to a driving mechanism, and the driving mechanism is electrically connected to the control module;

[0041] The control module is configured to control the heating component to operate before the motor body starts. At this time, no coolant is introduced into the chamber. After the temperature reaches the preset temperature required for the motor body to start, the control module controls the heating component to stop operating and controls the motor body to start. After the motor body starts, the control module controls the water pump to pump the 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 operating, the control drive mechanism drives the housing to rotate, so that the heat conduction layer on the motor body contacts the heating component, and at this time the control module controls the heating component to operate.

[0042] In a second aspect, an embodiment of the present disclosure further provides a working method using the above-mentioned low-temperature permanent magnet motor, including:

[0043] The temperature regulating mechanism adjusts the temperature inside the motor body according to the operating conditions of the motor body.

[0044] The beneficial effects of the present invention are as follows. The low-temperature permanent magnet motor of the present invention includes: a motor body and a temperature regulating mechanism arranged outside the motor body; the motor body is adapted to drive a load; the temperature regulating mechanism is configured to adjust the temperature inside the motor body according to the operating conditions of the motor body, thereby achieving that before the motor body starts, the temperature inside the motor body reaches a certain temperature through the temperature regulating mechanism, avoiding the influence of the low temperature on the performance of the lubricating oil when the motor body starts, and further avoiding the influence on the performance of the motor body caused by the influence of the lubricating oil performance.

[0045] Other features and advantages of the present invention will be described in the following specification, and part of them will become obvious from the specification or will be understood by implementing the present invention. The objectives and other advantages of the present invention are achieved and obtained by the structures specifically pointed out in the specification and the drawings.

[0046] To make the above-mentioned objectives, features, and advantages of the present invention more obvious and understandable, specific preferred embodiments are hereby given and described in detail in conjunction with the accompanying drawings as follows. Description of the Drawings

[0047] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0048] Figure 1 It is a schematic structural diagram of a low-temperature permanent magnet motor provided by an embodiment of the present disclosure;

[0049] Figure 2A cross-sectional view of a housing assembly provided by an embodiment of the present disclosure;

[0050] Figure 3 A cross-sectional view of a low-temperature permanent magnet motor provided by an embodiment of the present disclosure;

[0051] Figure 4 A schematic structural diagram of a rib provided by an embodiment of the present disclosure;

[0052] Figure 5 A principle block diagram of a low-temperature permanent magnet motor provided by an embodiment of the present disclosure.

[0053] In the figure:

[0054] 1 Temperature regulating mechanism, 11 Housing assembly, 111 Housing, 112 Groove, 113 Chamber, 114 Liquid storage chamber, 115 First ring body, 116 Second ring body, 117 Rib;

[0055] 2 Motor body;

[0056] 3 Driving mechanism. Detailed implementation manners

[0057] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0058] As used herein, phrases such as "in one embodiment", "according to one embodiment", "in some embodiments", etc. generally refer to the fact that the specific features, structures, or characteristics after the phrase can be included in at least one embodiment of the present disclosure. Therefore, the specific features, structures, or characteristics can be included in more than one embodiment of the present disclosure, such that these phrases do not necessarily refer to the same embodiment. As used herein, terms such as "example", "exemplary", etc. are used "for the purpose of serving as an example, instance, or illustration. Any embodiment, aspect, or design described herein as "example" or "exemplary" is not necessarily to be construed as being preferred or superior to other embodiments, aspects, or designs. On the contrary, the use of terms such as "example", "exemplary", etc. is intended to present concepts in a specific manner.

[0059] In the case of low temperature, the lubricating oil inside the motor body will be affected by the low temperature, such as increased viscosity, reduced fluidity, decreased anti-wear property, and poor sealing. When starting the motor body when the lubricating oil performance is affected, the internal structure of the motor body will be affected, such as increased wear and unsmooth rotation. The unsmooth rotation of the output shaft of the motor body will affect the output performance of the motor body.

[0060] Regarding the defects existing in the above solutions, they are all the results obtained by the inventor through practice and careful research. Therefore, the process of discovering the above problems and the solutions proposed by the present disclosure in this article for the above problems should be the contributions made by the inventor to the present disclosure during the process of the present disclosure.

[0061] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0062] The following will describe in detail some embodiments of the present invention with reference to the drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0063] As Figure 1 shown, at least one disclosed embodiment provides a low-temperature permanent magnet motor, including: a motor body 2, and a temperature regulating mechanism 1 disposed outside the motor body 2; the motor body 2 is adapted to drive a load; the temperature regulating mechanism 1 is configured to regulate the temperature inside the motor body 2 according to the operating conditions of the motor body 2, thereby achieving that before the motor body 2 is started, the temperature inside the motor body 2 reaches a certain temperature through the temperature regulating mechanism 1, avoiding the influence on the performance of the lubricating oil due to low temperature when the motor body 2 is started, and further avoiding the influence on the performance of the motor body 2 caused by the influence on the performance of the lubricating oil.

[0064] In an optional embodiment, the temperature regulating mechanism 1 includes: a housing assembly 11 and a plurality of heating assemblies; the heating assemblies are disposed 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 assemblies is parallel to the length direction of the motor body 2; the length of the heating assemblies can be slightly shorter than the length of the motor body 2 to better heat the inside of the motor body 2; the housing assembly 11 covers the outside of the motor body 2 to cover the heating assemblies; As Figure 5 shown, both the heating assemblies and the motor body 2 are electrically connected to a control module, and the control module is adapted to control the heating assemblies to heat the inside of the motor body 2 according to the operating conditions of the motor body 2.

[0065] In this embodiment, covering the heating component with the housing component 11 can prevent the heat generated by the heating component from dissipating, enhance the heating effect of the heating component on the interior of the motor body 2, and shorten the time required for heating the interior of the motor body 2.

[0066] In this embodiment, the heating component can adopt an electric heating wire.

[0067] As Figure 2 shown, in an alternative embodiment, the housing component 11 includes: a housing 111; the housing 111 covers the outside of the motor body 2; a groove 112 matching the heating component is formed on one surface of the housing 111 close to the outer wall of the motor body 2, and the groove 112 covers the corresponding heating component; the inner wall of the groove 112 is arc-shaped, and the arc arches away from the motor body 2, and a heat insulation layer is provided on the inner wall of the groove 112.

[0068] In this embodiment, the material of the heat insulation layer can be metal foil, metal oxide film, multi-layer film, etc. The heat insulation layer can prevent heat from dissipating from the housing 111 when the heating component is working, and enhance the heating effect on the interior of the motor body 2.

[0069] In this embodiment, a sensor is provided inside the motor body 2 to detect the temperature, and the sensor can be electrically connected to the control module to detect the temperature inside the motor body 2 in real time.

[0070] As Figure 2 shown, in an alternative embodiment, a plurality of chambers 113 are formed in the housing 111, the chambers 113 are arranged along the axial direction of the housing 111, and the chambers 113 are arranged circumferentially inside the housing 111; the chambers 113 are strip-shaped; the chambers 113 are arranged farther from the motor body 2 than the groove 112; half of the arched part corresponding to one groove 112 protrudes into one chamber 113, and one chamber 113 corresponds to the arched parts corresponding to two adjacent grooves 112.

[0071] In this embodiment, the total cross-sectional area of all the chambers 113 in the cross-section of the housing 111 can account for at most 92% of the total cross-sectional area of the housing. For example, the material of the housing 111 is 6000 series aluminum alloy, and the cross-section of the housing 111 can be a circular ring. Assuming that the outer diameter R of the solid circular ring in the cross-section of the housing 111 is 250 mm, the thermal conductivity k of the 6000 series aluminum alloy is 167 W / (m·K), the inner ring temperature T1 during the operation of the motor body 2 is 80 °C, and the outer ring temperature T2 in contact with the external environment is 0 °C. The inner radius of the approximate hollow circular ring formed by connecting the cross-sections of all the chambers 113 is r. To reduce the heat conduction rate to 8% of that of the solid circular ring, it can be calculated according to Fourier's law. For the solid circular ring, the heat conduction rate is Q0, and for the 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. Then the cross-sectional area of the hollow circular ring accounts for 92% of the cross-sectional area of the solid circular ring. To ensure the strength of the housing 111, the maximum proportion of the hollow circular ring is 92%.

[0072] In this embodiment, when the motor body 2 is heated by the heating component before starting, there is no coolant in the chamber 113. At this time, the gas in the chamber 113 plays the role of an air sandwich, that is, it keeps warm and avoids heat dissipation.

[0073] In this embodiment, the total volume occupied by all the chambers 113 can account for more than 80% of the volume inside the housing 111 except for the liquid storage chamber 114, so as to increase the heat preservation effect of the air sandwich and the heating effect inside the motor body 2.

[0074] In this embodiment, the material between the groove 112 and the chamber 113 can have a certain elasticity. When the pressure of the coolant in the chamber 113 is too high, the coolant squeezes the part of the groove 112 protruding into the chamber 113, and this part is squeezed and deformed outward of the chamber 113, increasing the volume of the chamber 113 and avoiding the deformation of the housing 111 caused by excessive pressure when the coolant flows.

[0075] Such as Figure 3As shown, in an alternative embodiment, a first ring body 115 and a second ring body 116 are provided in the housing 111. The first ring body 115 is close to one end face of the housing 111, and the second ring body 116 is close to the other end face 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 communicates with the first ring body 115, and the other end of the chamber 113 communicates with the second ring body 116. A liquid storage chamber 114 is formed at the bottom of the housing 111, and the liquid storage chamber 114 communicates with both the first ring body 115 and the second ring body 116. A coolant is stored in the liquid storage chamber 114. A water pump is provided at the connection between the first ring body 115 and the liquid storage chamber 114. The water pump is electrically connected to the control module. The control module is configured to control the water pump to pump 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 reflows into the liquid storage chamber 114 from the second ring body 116.

[0076] In this embodiment, through the first ring body 115 and the second ring body 116, the liquid storage chamber 114 and the chamber 113 can be communicated, so that the coolant can circulate. When heat dissipation is required after the motor body 2 is started, heat can be dissipated through the coolant. When the coolant flows through the chamber 113, the heat in the motor body 2 can be discharged, and the air outside the housing 111 can transfer the heat absorbed by the coolant in the chamber 113 to help cool the coolant and improve the heat dissipation effect.

[0077] In an alternative embodiment, a temperature sensor is provided at the connection between the second ring body 116 and the liquid storage chamber 114. 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.

[0078] In an alternative embodiment, the control module is configured to control the heating component to work before the motor body 2 is started. At this time, no coolant is introduced into the chamber 113. After the temperature reaches the preset temperature required for the start of 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.

[0079] In this embodiment, before the motor body 2 starts, the control module controls the heating component to heat. At this time, the heat generated by the heating component enters the motor body 2, increasing the temperature inside the motor body 2 and preventing the low temperature inside the motor body 2 from affecting the performance of the lubricating oil. And 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 rises to the preset temperature, the control module controls the heating component to stop working. At this time, the control module controls the motor body 2 to start.

[0080] In this embodiment, after the motor body 2 starts, 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 need for heat dissipation, the control module controls the water pump to start, pumping the coolant in the liquid storage chamber 114 into the chamber 113. The coolant starts to circulate to cool the motor body 2. At this time, the temperature sensor detects the temperature at the connection between the second ring body 116 and the liquid storage chamber 114 in real time, that is, the temperature at the liquid outlet of the chamber 113, and obtains the temperature of the coolant at the liquid outlet in real time. By combining this temperature with the temperature inside the motor body 2, the cooling effect is judged in real time. If the temperature at 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 are increased to improve the cooling effect.

[0081] As Figure 4 shown, in an optional embodiment, a number of convex ribs 117 are provided on the surface of the chamber 113 close to the motor body 2. The convex ribs 117 are arranged along the length direction of the chamber 113, and the convex ribs 117 are equidistantly arranged in the width direction of the chamber 113; for the chamber 113 in the upper part of the housing 111, the end of this part of the chamber 113 communicating with the first ring body 115 is farther from the motor body 2 than the end communicating with the second ring body 116.

[0082] In this embodiment, the upper part of the chamber 113 can be the uppermost one-third. By tilting the chamber 113, the coolant in the chamber 113 can flow better into the second ring body 116, avoiding the remaining coolant in the chamber 113 after the water pump stops.

[0083] In this embodiment, the convex ribs 117 can break the surface tension of the liquid in the chamber 113, enabling the liquid to flow more smoothly into the second ring body 116 and then into the liquid storage chamber 114. The part of the convex ribs 117 away from the motor body 2 can be in a sharp-corner shape to better break the surface tension.

[0084] In an alternative embodiment, the housing 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 the surface of the housing 111 close to the motor body 2 where no groove 112 is formed; the control module is configured to control the driving 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.

[0085] In this embodiment, the driving mechanism 3 may be composed of a motor and a transmission component to better drive the housing 111 to rotate.

[0086] In this embodiment, the heat conducting layer may be heat conducting silicone grease, heat conducting gasket, etc.

[0087] In this embodiment, after the motor body 2 stops working, the control module controls the driving mechanism 3 to drive the housing 111 to rotate, so that the heat conducting 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 housing 111 through the heat conducting layer and is introduced into the chamber 113. By heating the coolant in the chamber 113, the tension of the coolant is destroyed, so that the coolant can better flow into the second ring body 116 and flow into the liquid storage chamber 114, avoiding the residual coolant in the chamber 113. When there is no liquid in the chamber 113, the gas in the chamber 113 can play a heat preservation role.

[0088] In this embodiment, the temperature regulating mechanism 1 includes: a housing assembly 11; the housing assembly 11 includes: a housing 111; a plurality of chambers 113 are formed in the housing 111; the housing 111 is connected to a driving mechanism 3, and the driving 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 starts. At this time, no coolant is introduced into the chamber 113. 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 starts, 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 control driving mechanism 3 drives 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 work.

[0089] At least one other disclosed embodiment also provides a working method using the above-mentioned low-temperature permanent magnet motor, including: the temperature regulating mechanism 1 adjusts the temperature inside the motor body 2 according to the working conditions of the motor body 2.

[0090] In summary, the low-temperature permanent magnet motor of the present invention includes: a motor body 2, and a temperature regulating mechanism 1 provided outside the motor body 2; the motor body 2 is adapted to drive a load; the temperature regulating mechanism 1 is configured to adjust the temperature inside the motor body 2 according to the operating conditions of the motor body 2, thereby achieving that before the motor body 2 starts, the temperature inside the motor body 2 reaches a certain temperature through the temperature regulating mechanism 1, avoiding the influence of low temperature on the performance of the lubricating oil when the motor body 2 starts, and further avoiding the influence on the performance of the motor body 2 caused by the influence of the performance of the lubricating oil.

[0091] In the description of the embodiments of the present invention, unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" 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 directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0092] 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", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and 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 should not be construed as a limitation to the present invention. In addition, terms such as "first", "second" and other numerical terms used herein do not imply order or sequence unless explicitly indicated in the text. Therefore, without departing from the teachings of the exemplary embodiments, the first element, component, region, layer or section discussed above can be referred to as the second element, component, region, layer or section.

[0093] Spatially relative terms, such as "inner", "outer", "below", "beneath", "lower", "above", "upper", etc., may be used herein for ease of description to describe the relationship of one element or feature to another element or feature as illustrated in the figures. In addition to the orientation depicted in the figures, spatially relative terms are intended to encompass different orientations of the device in use or operation. For example, if the device in the figures is turned over, an element described as "below" or "beneath" another element or feature will be oriented "above" the other element or feature. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented (rotated 90 degrees or at other orientations), and the spatially relative descriptors used herein are interpreted accordingly.

[0094] Enlightened by the above-described ideal embodiments of the present invention, through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this invention. The technical scope of this invention is not limited to the content in 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), and the temperature regulating 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), and 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 controls the heating component to heat the inside of the motor body (2) according to the working condition of the motor body (2); The housing assembly (11) comprises: a housing (111) arranged outside the motor body (2); A groove (112) matching the heating component is formed on one side of the housing (111) close to the outer wall of the motor body (2); 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); A plurality of elongated 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 circumference 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 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).

2. The low temperature permanent magnet motor according to claim 1, 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).

3. The low temperature permanent magnet motor according to claim 2, 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.

4. The low temperature permanent magnet motor according to claim 3, 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.

5. The low temperature permanent magnet motor according to claim 2, 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).

6. The low temperature permanent magnet motor according to claim 2, 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.

7. 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.

8. 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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