CN111786494B

CN111786494B - Motor, control method, device and equipment thereof and motor system

Info

Publication number: CN111786494B
Application number: CN202010513861.5A
Authority: CN
Inventors: 邬锐; 高雷; 吴超; 李章玉; 陈生
Original assignee: Gree Electric Appliances Inc of Zhuhai
Current assignee: Gree Electric Appliances Inc of Zhuhai; Gree Nanjing Electric Appliances Co Ltd
Priority date: 2020-06-08
Filing date: 2020-06-08
Publication date: 2022-11-04
Anticipated expiration: 2040-06-08
Also published as: CN111786494A

Abstract

The application relates to a motor, a control method, a control device, control equipment and a motor system. The motor shell is provided with an inner shell and an outer shell which can move relatively, the inner shell comprises a first through hole, the outer shell comprises a second through hole, and the relative positions of the inner shell and the outer shell of the motor can be changed. According to the arrangement, on one hand, when the temperature in the motor exceeds a preset temperature threshold value, the motor can dissipate heat through the first through hole and the second through hole by controlling the inner shell and the outer shell of the motor to be at the second relative position; on the other hand, when the temperature in the motor does not exceed the preset temperature threshold value, the motor inner shell and the motor outer shell are controlled to be located at the first relative position, so that the motor shell is of a sealing structure, and the motor is guaranteed to have a high protection grade.

Description

Motor, control method, device and equipment thereof and motor system

Technical Field

The application relates to the technical field of motors, in particular to a motor, a control method, a control device, control equipment and a motor system of the motor.

Background

With the development of the air conditioning industry and the improvement of the living standard of people, the whole air conditioner has longer and longer running time, so that air conditioner manufacturers have to consider the problem that the temperature of internal accessories, such as a motor, of the air conditioner is overhigh when the air conditioner runs for a long time.

The motor is used as a main accessory of the air conditioner fan, and when a technician designs the motor, the technician needs to consider whether the local temperature rise of the motor is within a design allowable range besides ensuring that the motor meets a certain IP (Ingress Protection) Protection level. However, the heat dissipation performance of the existing motor is generally poor under the condition that high protection level is emphasized.

That is to say, at present, there is no motor that has not only satisfied high protection level, but also has stronger heat dispersion.

Disclosure of Invention

In order to solve the problems, the application provides a motor, a control method, a control device, control equipment and a motor system of the motor, so that the heat dissipation performance of the motor is enhanced on the premise of ensuring that the motor has a high protection level.

The above object of the present application is achieved by the following technical solutions:

in a first aspect, an embodiment of the present application provides an electric machine, including:

the motor comprises a motor body, a motor core and a motor core, wherein the motor body is provided with a shell, and the shell comprises an inner shell and an outer shell which can move relatively;

the inner shell comprises a first through hole, and the outer shell comprises a second through hole;

the relative position of the inner shell and the outer shell can be changed from a first relative position to a second relative position; wherein when the inner shell and the outer shell are in the first relative position, the shell is a sealing structure; when the inner shell and the outer shell are in the second relative position, the interior of the shell is communicated with the exterior of the shell through the first through hole and the second through hole.

Optionally, the inner shell is movable, and a first position sensor is disposed on the inner shell; and/or the shell can move, and a second position sensor is arranged on the shell;

the first position sensor is used for determining the current position of the inner shell, and the second position sensor is used for determining the current position of the outer shell.

Optionally, the inner shell and/or the outer shell may perform a rotational motion by using an output shaft of the motor as a rotation shaft.

Optionally, the outer surface of the housing includes an outer gear structure, the outer gear structure is coupled with a first gear, the first gear is sleeved on an output shaft of a first driving motor, and the first driving motor drives the housing to perform a rotational motion based on gear transmission when working;

and/or, the internal surface of inner shell includes the internal gear structure, the internal gear structure and second gear coupling, the second gear cup joints on second driving motor's output shaft, second driving motor during operation, based on gear drive the inner shell carries out rotary motion.

Optionally, the motor further includes: the temperature sensor is arranged in the inner shell and used for acquiring a temperature value in the motor;

when the temperature value in the motor is larger than or equal to a preset temperature threshold value, the relative position of the inner shell and the outer shell can be changed from a first relative position to a second relative position.

In a second aspect, an embodiment of the present application further provides a method for controlling a motor, where the motor is the above motor including a temperature sensor, and the method includes:

acquiring a temperature value inside the motor sent by the temperature sensor;

judging whether the temperature value is greater than or equal to a preset temperature threshold value or not;

and if the temperature value is greater than or equal to the temperature threshold value, controlling the inner shell and the outer shell of the motor to be at the second relative position.

Optionally, the controlling the inner casing and the outer casing of the motor to be in the second relative position includes:

if the inner shell and the outer shell of the motor are currently located at the second relative position, maintaining the inner shell and the outer shell of the motor at the second relative position;

and if the inner shell and the outer shell of the motor are not in the second relative position currently, controlling the inner shell and the outer shell of the motor to move relatively to be in the second relative position.

Optionally, after controlling the inner casing and the outer casing of the motor to be in the second relative position, the method further includes:

re-acquiring the temperature value inside the motor sent by the temperature sensor;

judging whether the re-acquired temperature value is smaller than the temperature threshold value;

if the temperature value obtained again is smaller than the temperature threshold value, controlling the inner shell and the outer shell of the motor to move relatively to be at the first relative position; otherwise, maintaining the inner and outer shells of the motor in the second relative position.

Optionally, the method further includes:

after the inner shell and the outer shell of the motor are controlled to be at the second relative position, timing is started;

the reacquiring the temperature value inside the motor sent by the temperature sensor comprises:

and when the timed time reaches a preset time threshold value, the temperature value in the motor is obtained again.

Optionally, the method further includes:

when the motor is electrified and started, judging whether an inner shell and an outer shell of the motor are located at the first relative position;

and if the inner shell and the outer shell of the motor are not in the first relative position, controlling the inner shell and the outer shell of the motor to move relatively to be in the first relative position.

In a third aspect, an embodiment of the present application further provides a motor control apparatus, where the motor is the above motor including a temperature sensor, the apparatus includes:

the temperature acquisition module is used for acquiring a temperature value in the motor;

the temperature judging module is used for judging whether the temperature value is greater than or equal to a preset temperature threshold value or not;

and the control module is used for controlling the inner shell and the outer shell of the motor to be in the second relative position if the temperature value is greater than or equal to the temperature threshold value.

Optionally, the control module is specifically configured to:

Optionally, the temperature obtaining module is further configured to: after the control module controls the inner shell and the outer shell of the motor to be in the second relative position, the temperature value in the motor is obtained again;

the temperature judgment module is further configured to: judging whether the re-acquired temperature value is smaller than the temperature threshold value;

the control module is further configured to: if the temperature value obtained again is smaller than the temperature threshold value, controlling the inner shell and the outer shell of the motor to move relatively to the first relative position; otherwise, maintaining the inner and outer housings of the electric machine in the second relative position.

Optionally, the apparatus further comprises a timing module;

the timing module is configured to: after the control module controls the inner shell and the outer shell of the motor to be at the second relative position, timing is started;

the temperature acquisition module is further configured to: and when the timed time reaches a preset time threshold value, the temperature value in the motor is obtained again.

Optionally, the control module is further configured to:

when the motor is electrified and started, judging whether an inner shell and an outer shell of the motor are at the first relative position; and if the inner shell and the outer shell of the motor are not in the first relative position, controlling the inner shell and the outer shell of the motor to move relatively to be in the first relative position.

In a fourth aspect, an embodiment of the present application further provides a motor control apparatus, including:

a memory and a processor coupled to the memory;

the memory is configured to store a computer program for performing at least the motor control method of any of the above;

the processor is used for calling and executing the computer program in the memory.

In a fifth aspect, an embodiment of the present application further provides an electric machine system, including: the motor including the temperature sensor and the motor control device; wherein the temperature sensor is connected with a processor of the motor control device.

The technical scheme provided by the embodiment of the application can have the following beneficial effects:

according to the technical scheme, the motor shell is arranged into the inner shell and the outer shell which can move relatively, the inner shell comprises the first through hole, the outer shell comprises the second through hole, and the relative position of the inner shell and the outer shell of the motor can be changed. According to the arrangement, on one hand, when the internal temperature of the motor exceeds a preset temperature threshold value, the motor can dissipate heat through the first through hole and the second through hole by controlling the inner shell and the outer shell of the motor to be at the second relative position; on the other hand, when the temperature in the motor does not exceed the preset temperature threshold value, the motor inner shell and the motor outer shell are controlled to be located at the first relative position, so that the motor shell is of a sealing structure, and the motor is guaranteed to have a high protection grade.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the application.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and, together with the description, serve to explain the principles of the application.

Fig. 1 is a schematic structural diagram of an electric machine according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of another electric machine provided in an embodiment of the present application;

fig. 3 is a schematic structural diagram of an electric machine system according to an embodiment of the present disclosure;

fig. 4 is a schematic flowchart of a motor control method according to an embodiment of the present disclosure;

fig. 5 is a schematic flowchart of another motor control method provided in an embodiment of the present application;

fig. 6 is a schematic structural diagram of a motor control device according to an embodiment of the present disclosure;

fig. 7 is a schematic structural diagram of a motor control device according to an embodiment of the present application.

Reference numerals: 1-an inner shell; 11-a first via; 2-a housing; 21-a second via; 22-an external gear; 23-a first gear; 24-a first drive motor; 25-a second position sensor; 3-an output shaft; 4-a temperature sensor; and 5, motor control equipment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the following exemplary examples do not represent all implementations consistent with the present application. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present application, as detailed in the appended claims.

The IP protection level (referred to as "protection level" for short) of the motor refers to the dustproof and waterproof level of the motor, that is, the capability of preventing dust, moisture and the like from invading into the motor. If the dustproof grade is low, when the motor runs for a long time in an environment with high dust content, dust can be gradually accumulated in the motor, so that the working efficiency and the heat dissipation efficiency of the motor are influenced; and if the waterproof grade is lower, more water vapor invades the motor and can cause the motor to stop, and even can cause the motor to burn out when serious. Therefore, when designing the motor, a technician needs to design a corresponding protection level according to the actual application environment (dust and water vapor content) of the motor. The existing motor meets the condition of higher protection level, the heat dissipation performance is generally poor, and the motor is not beneficial to long-time running.

Based on the motor, the application provides the motor with high protection level and strong heat dissipation performance, the control method, the control device and the control equipment of the motor, and the motor system comprising the motor.

The embodiments of the present application will be described in detail below with reference to the accompanying drawings.

Examples

Referring to fig. 1, fig. 1 is a schematic structural diagram of a motor according to an embodiment of the present disclosure.

It should be noted that one of the improvements of the present application is a housing in a motor body, and therefore fig. 1 and other subsequent drawings only show the housing and other necessary structures of the motor, and structural components such as a stator, a rotor, and a coil in the motor body are in a conventional arrangement, and are not illustrated and described in detail. Note that, for convenience of illustration of the structure inside the motor housing, portions at both ends of the motor housing (that is, portions connected to the motor output shaft 3) are omitted in fig. 1.

Referring to fig. 1, the motor housing includes an inner housing 1 and an outer housing 2, the inner housing 1 includes a first through hole 11, the outer housing 2 includes a second through hole 21, and the inner housing 1 and the outer housing 2 can move relatively to change a relative position relationship, including changing a relative position relationship between the first through hole 11 and the second through hole 21. It should be noted that, in the specific implementation, the first through holes 11 and the second through holes 21 may be disposed on the side surfaces of the inner shell 1 and the outer shell 2 as shown in fig. 1, and the arrangement manner may be that the first through holes 11 and the second through holes 21 are disposed in a row at a specific distance, or may be disposed at other positions and adopt other arrangement manners, as long as the first through holes 11 and the second through holes 21 correspond to each other, which is not limited.

It should be noted that the inner casing 1 and the outer casing 2 can move relatively, and include: (1) the inner shell 1 is fixed, and the outer shell 2 can move; (2) the outer shell 2 is fixed, and the inner shell 1 can move; (3) both the inner shell 1 and the outer shell 2 are movable.

Specifically, referring to the casing shown in the upper half of fig. 1, the inner casing 1 and the outer casing 2 are in a first relative position, at this time, the first through hole 11 is shielded by the outer casing 2, and the second through hole 21 is shielded by the inner casing 1 (black in fig. 1 indicates that the first through hole 11 and the second through hole 21 are shielded), so that the whole casing is a sealed structure, and the inside and the outside of the casing cannot communicate with each other, and for convenience of understanding and description, this state of the casing is hereinafter referred to as a "closed state"; referring to the housing shown in the lower half of fig. 1, the inner housing 1 and the outer housing 2 are in a second relative position, in which the first through holes 11 and the second through holes 21 are overlapped (white in fig. 1 indicates that the first through holes 11 and the second through holes 21 are overlapped), so that the inside and the outside of the housing are communicated with each other and air can flow through each other.

With the arrangement, on one hand, when the internal temperature of the motor exceeds a preset temperature threshold value, the motor can radiate heat through the first through hole 11 and the second through hole 21 by controlling the inner shell 1 and the outer shell 2 of the motor to be in the second relative position, namely, the shell is in the open hole state; on the other hand, when the temperature in the motor does not exceed the preset temperature threshold, the motor inner shell 1 and the motor outer shell 2 are controlled to be in the first relative position, namely the shell is in a closed state, so that the motor shell is of a sealing structure, and the motor is further guaranteed to have a high protection level.

Further, in some embodiments, the specific structure of the housing is: the inner casing 1 and/or the outer casing 2 can perform a rotational motion with the output shaft 3 of the motor as a rotational axis, that is, at least one of the inner casing 1 and the outer casing 2 can perform a rotational motion with the output shaft 3 of the motor as a rotational axis, thereby changing a relative positional relationship.

As a specific implementation manner of the above-mentioned rotation motion, please refer to fig. 2, and fig. 2 is a schematic structural diagram of another motor provided in the embodiment of the present application.

As shown in fig. 2, the outer surface of the housing 2 includes an external gear 22 structure, the external gear 22 structure is coupled with a first gear 23, the first gear 23 is sleeved on an output shaft of a first driving motor 24, and the first driving motor 24 drives the housing 2 to perform a rotation motion based on gear transmission when in operation. That is, when the first driving motor 24 is powered on, the output shaft drives the first gear 23 to rotate, and the first gear 23 transmits power to the housing 2 through the external gear 22 on the housing 2, so as to rotate the housing 2. The first drive motor 24 may be fixed to the housing 2 or to another component than the motor by means of a fastening element.

In addition, in other embodiments, another implementation manner of the above-mentioned rotation motion is: the inner surface of the inner shell 1 comprises an inner gear structure, the inner gear structure is coupled with a second gear, the second gear is sleeved on an output shaft of a second driving motor, and the inner shell 1 is driven to rotate based on gear transmission when the second driving motor works. That is to say, when the second driving motor is powered on to work, the output shaft drives the second gear to rotate, and the second gear transmits power to the inner shell 1 through the internal gear on the inner shell 1, so that the rotation of the inner shell 1 is realized. Wherein, the second driving motor can be fixed on the inner shell 1 through a fixing piece. The solution in this embodiment is similar to the specific implementation of the solution of the corresponding embodiment of fig. 2, and therefore the description of the figures is omitted.

Further, in practical implementation, the above scheme of rotating the outer shell 2 may be combined with the scheme of rotating the inner shell 1, that is, the inner shell 1 and the outer shell 2 are rotated simultaneously.

In addition, the control of the first driving motor 24 and the second driving motor is realized by the motor control device 5, both the first driving motor 24 and the second driving motor are connected with the motor control device 5, the arrangement positions of the relevant parts of the motors and the connection relation between the relevant parts of the motors and the motor control device 5 are shown in fig. 3, and fig. 3 is a schematic structural diagram of a motor system provided by the embodiment of the present application. It should be noted that, for better illustration of the inner casing 1 and the outer casing 2, the distance between the outer surface of the inner casing 1 and the inner surface of the outer casing 2 is enlarged as appropriate in fig. 3, and in fact, the two are closely fitted, and only the first driving motor 24 is shown in fig. 3. Further, a specific control method performed by this motor control apparatus 5 will be described in detail in the subsequent embodiments.

It should be noted that, the above is only one possible relative movement manner and corresponding housing structure of the inner housing 1 and the outer housing 2, and in practical implementation, other housing structures may also be used to implement the relative movement of the inner housing 1 and the outer housing 2, for example, the axial length of the inner housing 1 is smaller than that of the outer housing 2, so that the inner housing 1 can slide along the axial direction of the motor under the driving of an external force (such as the driving motor described above), thereby implementing the conversion between the "open state" and the "closed state".

In addition, referring to fig. 3, in order to accurately control the movement of the inner shell 1 or the outer shell 2 and ensure that the inner shell or the outer shell moves to the correct position, a position sensor may be further disposed on the motor housing, specifically configured as: the inner shell 1 can move, and a first position sensor is arranged on the inner shell 1; and/or the housing 2 is movable, the housing 2 being provided with a second position sensor 25; the first position sensor is used to determine the current position of the inner housing 1 and the second position sensor 25 is used to determine the current position of the outer housing 2. That is, one of the inner casing 1 and the outer casing 2 that is movable is provided with a position sensor (in the motor structure shown in fig. 3, only the outside of the outer casing 2 is provided with the second position sensor 25), and if both are movable, one position sensor is provided each. The first position sensor and the second position sensor 25 are both connected to the motor control device 5, so as to transmit the acquired position signals to the motor control device 5, and the motor control device 5 determines the relative positions of the inner shell 1 and the outer shell 2 based on the position signals, i.e. determines whether the shell is in an opening state or a closed state.

Since one of the purposes of the present application is to enhance the heat dissipation performance of the motor by switching the casing to the "open hole state", on the basis of the above scheme, as shown in fig. 3, a temperature sensor 4 is further disposed inside the motor inner casing 1, and the temperature sensor 4 is connected to the motor control device 5, so that under the control of the motor control device 5, when the temperature value inside the motor is greater than or equal to the preset temperature threshold, the relative position of the inner casing 1 and the outer casing 2 can be changed from the first relative position to the second relative position, that is, from the "closed state" to the "open hole state", thereby enhancing the heat dissipation performance; when the temperature value in the motor is reduced to be less than the preset temperature threshold value, the relative position of the inner shell 1 and the outer shell 2 can be changed from the second relative position to the first relative position, namely, the open hole state is changed into the closed state, so that the protection grade is improved.

In order to more fully explain the technical solution of the present application, a control method performed by the motor control apparatus 5 will be explained below by way of an embodiment.

Example two

Referring to fig. 4, fig. 4 is a schematic flow chart of a motor control method according to an embodiment of the present application, where the motor at least includes a motor body and a temperature sensor 4 disposed in the motor body, and the motor body includes an inner shell 1 and an outer shell 2 according to the first embodiment.

As shown in fig. 1, the motor control method includes the steps of:

s401: acquiring a temperature value inside the motor sent by the temperature sensor;

that is, the temperature sensor collects a temperature value T inside the motor and sends the temperature value T to the motor control device.

S402: judging whether the temperature value is greater than or equal to a preset temperature threshold value or not;

the temperature threshold T0 is set according to a tolerable temperature range of the motor, for example, set to be equal to or less than a maximum tolerable temperature value of the motor. It should be noted that, the temperature sensor may acquire the temperature value T inside the motor in real time, but the change of the temperature is generally slow (relative to the data processing speed of the motor control device), so the motor control device may be set as: the temperature value T sent by the temperature sensor is obtained once and the above determination process is executed every set time interval, or the temperature value T sent by the temperature sensor is continuously obtained, but the above determination process is executed once every set time interval based on the temperature value T currently sent by the temperature sensor, wherein the time interval may be set according to actual needs, for example, set to 3 minutes.

S403: and if the temperature value is greater than or equal to the temperature threshold value, controlling the inner shell and the outer shell of the motor to be in the second relative position.

When the temperature value is greater than or equal to the temperature threshold value, namely T is greater than or equal to T0, the temperature in the motor is too high, and at this time, the shell structure is set to be in an open pore state, so that the heat dissipation performance is enhanced, namely, the inner shell and the outer shell are located at the second relative position. On the other hand, when T is less than T0, the temperature in the motor is reasonable, the inner shell and the outer shell of the motor are controlled to be in the first relative position, and therefore the protection level is improved.

As a more specific embodiment, the step S403 of controlling the inner casing and the outer casing of the motor to be in the second relative position includes: if the inner shell and the outer shell of the motor are currently located at the second relative position, maintaining the inner shell and the outer shell of the motor at the second relative position; and if the inner shell and the outer shell of the motor are not in the second relative position currently, controlling the inner shell and the outer shell of the motor to move relatively to be in the second relative position. That is, when the motor control apparatus determines that T ≧ T0, it is first determined whether the casing is currently in the "open state" or the "closed state", wherein the determination process may be implemented based on the position signal acquired by the position sensor in the above-described embodiment, and if the casing is currently in the "closed state", it is switched to the "open state", and if the casing is currently in the "open state", it is maintained in the "open state".

Further, the step S403: if the temperature value is greater than or equal to the temperature threshold value, after controlling the inner shell and the outer shell of the motor to be in the second relative position, the control method further includes:

re-acquiring the temperature value inside the motor sent by the temperature sensor; judging whether the re-acquired temperature value is smaller than the temperature threshold value; if the temperature value obtained again is smaller than the temperature threshold value, controlling the inner shell and the outer shell of the motor to move relatively to the first relative position; otherwise, maintaining the inner and outer shells of the motor in the second relative position.

That is, if the shell is in the open hole state at present and the temperature value T in the motor collected by the temperature sensor is less than T0, the shell is switched to the closed state again, so that the protection level is improved; if the temperature value T in the motor is larger than or equal to T0, the shell maintains the open-hole state, the heat dissipation is continuously accelerated, and the shell is switched to the closed state until T is smaller than T0.

However, after the research of the applicant, it is found that, because the heat dissipation speed of the motor is generally slow, and the time interval for the motor control device to execute the above determination logic is relatively short, after the housing is switched to the "open hole state" because T ≧ T0, if the temperature value inside the motor is obtained again immediately or only at short intervals and the determination logic is executed, even if the temperature value T is reduced to be less than the temperature threshold value T0, the reduction range of the temperature value T is not large, after the housing is switched to the "closed state", the temperature value T is quickly increased to be greater than or equal to the temperature threshold value T0, and at this time, the housing needs to be switched to the "open hole state again. That is, frequent switching of the state of the housing may result, thereby both wasting electrical energy and shortening the service life of the corresponding drive motor and gear structure.

Based on this, the following modifications are made to the above scheme: after the inner shell and the outer shell of the motor are controlled to be at the second relative position, timing is started; the reacquiring the temperature value inside the motor sent by the temperature sensor includes: and when the timed time reaches a preset time threshold value, the temperature value in the motor is obtained again.

That is, the timing is started after the casing of the motor is switched to the 'open pore state', the 'open pore state' of the casing is maintained, when the timed time reaches a preset time threshold value T, it is indicated that the motor performs heat dissipation for a sufficient time, and the temperature value T is reduced to a lower range. The preset time threshold t may be set according to an actual application environment of the motor and the heat dissipation performance of the motor, for example, set to 2 hours.

In addition, in some embodiments, the control method further includes: when the motor is electrified and started, judging whether an inner shell and an outer shell of the motor are at the first relative position; and if the inner shell and the outer shell of the motor are not in the first relative position, controlling the inner shell and the outer shell of the motor to move relatively to be in the first relative position.

Specifically, considering that the temperature value T generally does not reach the temperature threshold T0 when the motor is just powered on and started, the housing is more suitable to be in the "closed state" at this time, and therefore, when the motor is powered on and started, whether the inner housing and the outer housing of the motor are in the first relative position is determined, that is, whether the housing is in the "closed state" is determined, and if the motor is in the "open-hole state" due to active power switching or accidental power failure of a user during the last work, the motor is switched to the "closed state".

In order to make the above-mentioned scheme easier to understand, the motor control method in the second embodiment will be described below by using a specific example and combining the motor related structure in the first embodiment.

EXAMPLE III

Referring to fig. 5, fig. 5 is a schematic flow chart of another motor control method according to an embodiment of the present disclosure.

As shown in fig. 5, the method includes:

the motor is electrified and started; the motor shell is reset to be in a closed state; then continuously circulating the following processes:

the temperature sensor operates, and monitors and feeds back a temperature value T to the motor control equipment; the motor control equipment judges whether the temperature value T is greater than or equal to a temperature threshold value T or not; if not, the motor shell keeps the current state; if so, the motor control equipment sends a control signal to drive the motor to operate; the position sensor sends a position signal to the motor control equipment; the motor control equipment judges whether the shell is in a hole forming state; if not, the motor control equipment continues to enable the driving motor to operate; if yes, keeping the current state of the motor shell for a continuous operation time t; then, the temperature sensor operates, and monitors and feeds back the temperature value T to the motor control equipment; the motor control equipment judges whether the temperature value T is larger than or equal to a temperature threshold value T or not; if so, keeping the current state of the motor shell; if not, the motor control equipment sends a control signal to drive the motor to operate; the position sensor sends a position signal to the motor control equipment; the motor control equipment judges whether the shell is in a closed state; if not, the motor control equipment continues to enable the driving motor to operate; if yes, the process returns to the step of starting the cycle.

In addition, please refer to fig. 6, fig. 6 is a schematic structural diagram of a motor control apparatus according to an embodiment of the present application, and a method executed by the motor control apparatus corresponds to the motor control method.

As shown in fig. 6, the apparatus includes the following structure:

the temperature acquisition module 61 is used for acquiring a temperature value inside the motor;

a temperature judgment module 62, configured to judge whether the temperature value is greater than or equal to a preset temperature threshold;

and the control module 63 is configured to control the inner shell and the outer shell of the motor to be in the second relative position if the temperature value is greater than or equal to the temperature threshold value.

Optionally, the control module is specifically configured to:

the control module is further configured to: if the temperature value obtained again is smaller than the temperature threshold value, controlling the inner shell and the outer shell of the motor to move relatively to be at the first relative position; otherwise, maintaining the inner and outer housings of the electric machine in the second relative position.

Optionally, the apparatus further comprises a timing module;

Optionally, the control module is further configured to:

when the motor is electrified and started, judging whether an inner shell and an outer shell of the motor are located at the first relative position; and if the inner shell and the outer shell of the motor are not in the first relative position, controlling the inner shell and the outer shell of the motor to move relatively to be in the first relative position.

Specifically, please refer to the motor control method of the above embodiment for a specific implementation manner of the method executed by the functional module, which is not described herein again.

In addition, referring to fig. 7, fig. 7 is a schematic structural diagram of a motor control apparatus according to an embodiment of the present application, where the motor control apparatus, that is, the motor control apparatus 5, includes:

a memory 51 and a processor 52 connected to the memory 51;

the memory 51 is used for storing a computer program for executing at least the motor control method according to any of the above embodiments;

the processor 52 is adapted to call and execute said computer program in the memory 51.

Wherein the processor 52 is connected to the temperature sensor 4. Specifically, please refer to the motor control method of the above embodiment for a specific implementation manner of the method executed by the computer program, which is not described herein again.

It is understood that the same or similar parts in the above embodiments may be mutually referred to, and the same or similar contents in other embodiments may be referred to for the contents which are not described in detail in some embodiments.

It should be noted that, in the description of the present application, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Further, in the description of the present application, the meaning of "a plurality" means at least two unless otherwise specified.

Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and the scope of the preferred embodiments of the present application includes other implementations in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present application.

It should be understood that portions of the present application may be implemented in hardware, software, firmware, or a combination thereof. In the above embodiments, the various steps or methods may be implemented in software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware, as in another embodiment, any one or combination of the following techniques, which are known in the art, may be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application specific integrated circuit having an appropriate combinational logic gate circuit, a Programmable Gate Array (PGA), a Field Programmable Gate Array (FPGA), or the like.

It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.

In addition, functional units in the embodiments of the present application may be integrated into one processing module, or each unit may exist alone physically, or two or more units are integrated into one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode. The integrated module, if implemented in the form of a software functional module and sold or used as a stand-alone product, may also be stored in a computer readable storage medium.

The storage medium mentioned above may be a read-only memory, a magnetic or optical disk, etc.

In the description herein, reference to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.

Claims

1. An electric machine, comprising:

the motor comprises a motor body, a motor core and a motor core, wherein the motor body is provided with a shell, and the shell comprises an inner shell and an outer shell which can move relatively; a temperature sensor is arranged in the inner shell and used for acquiring a temperature value in the motor;

when the temperature value in the motor is larger than or equal to a preset temperature threshold value, the relative position of the inner shell and the outer shell can be changed from a first relative position to a second relative position; when the temperature value in the motor is smaller than a preset temperature threshold value, the relative position of the inner shell and the outer shell can be changed from a second relative position to a first relative position; wherein when the inner shell and the outer shell are in the first relative position, the shell is a sealing structure; when the inner shell and the outer shell are at the second relative position, the interior of the shell is communicated with the exterior of the shell through the first through hole and the second through hole; after the inner shell and the outer shell of the motor are controlled to be at the second relative position, timing is started; and when the timed time reaches a preset time threshold value, re-acquiring the temperature value in the motor.

2. The electric machine of claim 1, wherein the inner housing is movable, the inner housing having a first position sensor disposed thereon; and/or the shell can move, and a second position sensor is arranged on the shell;

3. The electric machine of claim 1, wherein the inner housing and/or the outer housing are capable of rotational movement about an output shaft of the electric machine.

4. The motor of claim 3, wherein the outer surface of the housing comprises an outer gear structure, the outer gear structure is coupled to a first gear, the first gear is sleeved on an output shaft of a first driving motor, and the first driving motor drives the housing to rotate based on gear transmission when in operation;

5. A method of controlling an electric motor, wherein the electric motor is an electric motor according to any one of claims 1 to 4, the method comprising:

acquiring a temperature value inside the motor sent by the temperature sensor;

if the temperature value is larger than or equal to the temperature threshold value, controlling the inner shell and the outer shell of the motor to be at the second relative position;

after the inner shell and the outer shell of the motor are controlled to be at the second relative position, timing is started; and when the timed time reaches a preset time threshold value, the temperature value in the motor is obtained again.

6. The method of claim 5, wherein controlling the inner and outer housings of the electric machine in the second relative position comprises:

7. The method of claim 5, wherein after controlling the inner and outer housings of the electric machine to be in the second relative position, further comprising:

if the temperature value obtained again is smaller than the temperature threshold value, controlling the inner shell and the outer shell of the motor to move relatively to the first relative position; otherwise, maintaining the inner and outer housings of the electric machine in the second relative position.

8. The method of claim 5, further comprising:

when the motor is electrified and started, judging whether an inner shell and an outer shell of the motor are at the first relative position;

9. A motor control apparatus, characterized in that the motor is the motor of claim 1, the apparatus comprising:

the control module is used for controlling the inner shell and the outer shell of the motor to be in the second relative position if the temperature value is greater than or equal to the temperature threshold value;

10. The apparatus of claim 9, wherein the control module is specifically configured to:

11. The apparatus of claim 9, wherein the temperature acquisition module is further configured to: after the control module controls the inner shell and the outer shell of the motor to be in the second relative position, the temperature value in the motor is obtained again;

12. The apparatus of claim 11, further comprising a timing module;

13. The apparatus of claim 9, wherein the control module is further configured to:

14. A motor control apparatus characterized by comprising:

a memory and a processor coupled to the memory;

the memory is adapted to store a computer program for performing at least the motor control method of any of claims 5-8;

15. An electric machine system, comprising: the motor according to any one of claims 1 to 4 and the motor control device according to claim 14; wherein the temperature sensor is connected with a processor of the motor control device.