CN214959162U

CN214959162U - Motor and assembly

Info

Publication number: CN214959162U
Application number: CN202120478665.9U
Authority: CN
Inventors: 潘猛; 孙卫东
Original assignee: United Automotive Electronic Systems Co Ltd
Current assignee: United Automotive Electronic Systems Co Ltd
Priority date: 2021-03-05
Filing date: 2021-03-05
Publication date: 2021-11-30
Anticipated expiration: 2031-03-05

Abstract

The utility model provides a motor and subassembly, motor element includes: a motor body including a stator winding; the heat conduction sleeve is connected with the stator winding and is provided with a pipe cavity; and the temperature monitoring device comprises a temperature measuring part which is inserted into the tube cavity and contacted with at least part of the wall of the tube cavity so as to monitor the temperature of the heat-conducting sleeve. The stator winding is connected with the heat conduction sleeve, and the temperature measuring part of the temperature monitoring device can be arranged in the heat conduction sleeve in a pluggable mode, so that the temperature monitoring device is convenient to replace.

Description

Motor and assembly

Technical Field

The utility model belongs to the technical field of the motor, concretely relates to motor and subassembly.

Background

With the rapid development of new energy vehicles, the requirements for the continuous performance of the electric machines, such as continuous power and continuous torque, are increasing. The sustained performance of the motor is limited by the maximum temperature at which the motor stator operates continuously. The temperature monitoring in the motor plays an important role in improving the performance of the motor. At present, a temperature measuring device for monitoring temperature in a motor is mainly a negative temperature coefficient thermistor (NTC), a temperature measuring part of the NTC is pre-embedded in a stator winding to be in close contact with the stator winding during actual use, and then the temperature measuring part is connected with a control system through a lead. This mode can accurately monitor temperature in the motor, nevertheless because NTC's temperature measurement portion is pre-buried in stator winding, need the whole motor housing of dismouting when needing to change NTC, then extracts the temperature measurement end from stator winding, and it is very difficult to extract the operation of temperature measurement end in the reality, and this leads to NTC to change the trouble.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a motor and motor element, but with the connected mode change between motor and the temperature monitoring device for plug-in, make things convenient for temperature monitoring device's change.

In order to achieve the above object, the utility model provides an electric machine assembly, include:

a motor body including a stator winding;

the heat conduction sleeve is connected with the stator winding and is provided with a pipe cavity; and the number of the first and second groups,

the temperature monitoring device comprises a temperature measuring part, wherein the temperature measuring part is inserted into the tube cavity and is in contact with at least part of the wall of the tube cavity so as to monitor the temperature of the heat conducting sleeve.

Optionally, the heat conducting sleeve includes a tube body, the tube body has the tube cavity, and an inner diameter of the tube cavity is smaller than an outer diameter of the temperature measuring part, so that the tube cavity and the temperature measuring part are in interference fit.

Optionally, the heat-conducting sleeve further comprises a fastener, and the fastener is connected to the pipe body and is used for applying acting force to the temperature measuring part, so that the temperature measuring part and the heat-conducting sleeve are kept relatively static.

Optionally, the lumen extends axially through the body and has first and second opposite ends;

the fastener comprises an elastic pressing sheet, wherein the elastic pressing sheet is provided with a third end and a fourth end which are opposite; the third end of the elastic pressing sheet is connected to the end of the first end of the tube cavity, and the fourth end of the elastic pressing sheet extends towards the inside of the tube cavity; and the fourth end of the elastic pressing sheet is used for pressing against the temperature measuring part and applying acting force to the temperature measuring part.

Optionally, the end of the first end of the tube cavity is provided with a first edge and a second edge, the first edge is farther from the end of the second end of the tube cavity, and the second edge is connected with the elastic pressing sheet;

the heat conduction sleeve further comprises a limiting sheet connected to the first edge and used for limiting the maximum length of the temperature measuring part extending into the tube cavity.

Optionally, the heat conducting sleeve further comprises a guiding part connected to the end of the second end of the lumen; the guide part is of a conical structure, and the cross section of the guide part is gradually increased along the direction from the first end to the second end of the tube cavity.

Optionally, the heat conducting sleeve further includes a welding plate, the welding plate has two welding surfaces, one of the welding surfaces is welded to the outer surface of the pipe body, and the other welding surface is welded to the stator winding.

Optionally, the motor body further comprises a stator, and the stator winding is arranged on the stator;

the temperature monitoring device also comprises a lead part and a mounting block; one end of the lead part is connected with the temperature measuring part; the mounting block is disposed at a predetermined position of the lead part and is used to be connected with the stator.

Optionally, the mounting block is injection molded at the predetermined position of the lead part.

In order to achieve the purpose, the utility model also provides a motor, which comprises a motor body and a heat conducting sleeve; the motor body comprises a stator winding; the heat conduction sleeve is connected with the stator winding and is provided with a tube cavity, the tube cavity is used for loading a temperature measuring part of a temperature monitoring device, and at least part of the wall of the tube cavity is in contact with the temperature measuring part.

Compared with the prior art, the utility model discloses a motor and motor element have following advantage:

the motor assembly comprises a motor body, a heat conducting sleeve and a temperature monitoring device; the motor body comprises a stator winding; the heat conducting sleeve is connected with the stator winding and is provided with a pipe cavity; the temperature monitoring device comprises a temperature measuring part which is inserted into the tube cavity and is contacted with at least part of the wall of the tube cavity so as to monitor the temperature of the heat conducting sleeve. In the motor component, the stator winding, the heat conduction sleeve and the temperature monitoring device are all arranged in the motor shell and are sealed by the end covers, the temperature measuring part of the temperature monitoring device can be arranged in the heat conduction sleeve in a pluggable mode, when the temperature monitoring device is replaced, an operator only needs to detach the end covers, then the temperature measuring part of the monitoring device to be replaced is pulled out of the tube cavity of the heat conduction sleeve, then the temperature measuring part of a new temperature monitoring device is inserted into the heat conduction sleeve, and finally the end covers are sealed again without detaching the whole motor shell, so that the motor component is simple and convenient.

Drawings

The accompanying drawings are included to provide a better understanding of the present invention and are not intended to constitute an undue limitation on the invention. Wherein:

fig. 1 is a schematic partial structural view of a motor assembly according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a heat conducting sleeve of an electric machine assembly according to an embodiment of the present invention;

fig. 3 is a schematic view illustrating a connection relationship between a heat conducting sleeve of a motor assembly and a temperature monitoring device according to an embodiment of the present invention;

fig. 4 is a schematic structural diagram of a mounting block of a motor assembly provided in accordance with an embodiment of the present invention;

fig. 5 is a schematic diagram illustrating a connection relationship between a mounting block of a motor assembly and a lead portion of a temperature monitoring device according to an embodiment of the present invention.

[ reference numerals are described below ]:

100-motor body, 110-stator;

200-heat conducting sleeve, 201-tube cavity, 210-tube body, 220-welding plate, 221-second welding surface, 230-elastic pressing sheet, 240-limiting sheet and 250-guiding part;

300-a temperature monitoring device, 310-a temperature measuring part, 320-a lead part, 330-an inserting part, 340-a mounting block and 341-an injection molding groove;

400-bolt.

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will be readily apparent to those skilled in the art from the disclosure herein. The present invention can also be implemented or applied through other different specific embodiments, and various details in the present specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the present embodiment are only for illustrating the basic idea of the invention in a schematic manner, and only the components related to the invention are shown in the drawings rather than being drawn according to the number, shape and size of the components in actual implementation, and the form, quantity and proportion of the components in actual implementation may be changed at will, and the layout of the components may be more complicated.

Furthermore, each embodiment described below has one or more technical features, which does not mean that all technical features of any embodiment need to be implemented simultaneously by a person using the present invention, or that all technical features of different embodiments can be implemented separately. In other words, in the implementation of the present invention, based on the disclosure of the present invention, and depending on design specifications or implementation requirements, a person skilled in the art can selectively implement some or all of the technical features of any embodiment, or selectively implement a combination of some or all of the technical features of a plurality of embodiments, thereby increasing the flexibility in implementing the present invention.

As used in this specification, the singular forms "a", "an" and "the" include plural referents, and the plural forms "a plurality" includes more than two referents unless the content clearly dictates otherwise. As used in this specification, the term "or" is generally employed in its sense including "and/or" unless the content clearly dictates otherwise, and the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

To make the objects, advantages and features of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention. The same or similar reference numbers in the drawings identify the same or similar elements.

Referring to fig. 1 to 3, the present invention provides an electric machine assembly, which includes an electric machine body 100, a heat conducting sleeve 200 and a temperature monitoring device 300. The motor body 100 includes a stator 110 and a stator winding (not shown) disposed on the stator 110. The heat conducting sleeve 200 is connected to the stator winding and has a lumen 201. The temperature monitoring device 300 comprises a temperature measuring part 310, wherein the temperature measuring part 310 is inserted into the lumen 201 and is in contact with at least part of the lumen wall of the lumen 201 to monitor the temperature of the heat conducting sleeve 200.

It can be understood that the heat conducting sleeve 200 may be made of metal with good heat conductivity, such as copper, and welded to the stator winding to reduce the temperature difference between the stator winding and the heat conducting sleeve 200 as much as possible. Specifically, referring to fig. 3 and 4, the heat conducting sleeve 200 includes a tube 210 and a welding plate 220. The tube 210 has the lumen 201. The welding plate 220 has a first welding surface and a second welding surface 221, wherein the first welding surface is welded to the outer surface of the pipe body 210, and the second welding surface 221 is welded to the stator winding. In practice, the temperature difference between the stator winding and the heat-conducting sleeve 200 may be calibrated in advance through experiments, and then compensated through a control algorithm, so as to accurately obtain the temperature of the stator winding according to the temperature of the heat-conducting sleeve 200 measured by the temperature measuring part 310. Those skilled in the art know how to compensate the temperature measured by the temperature measuring part 310, which is not an improvement of the present invention, and therefore will not be described here.

The motor assembly further includes a motor housing (not shown) and an end cap (not shown), as is well known to those skilled in the art. The stator 110, the stator winding and the temperature measuring part 310 of the temperature monitoring device are all arranged in the motor housing and are closed by the end cover. In this embodiment, by arranging the heat conducting sleeve 200 and arranging the temperature measuring part 310 of the temperature monitoring device 300 in the tube cavity 201 of the heat conducting sleeve 200 in a pluggable manner, when the temperature monitoring device 200 is replaced, only the end cover needs to be detached, and the temperature measuring part 310 can be pulled out of the tube cavity 201 of the heat conducting sleeve 200 to replace a new temperature monitoring device, so that the operation is simple and convenient.

With reference to fig. 2 and fig. 3, the lumen 201 extends through the tube body 210 in the axial direction, the inner diameter of the lumen 201 is smaller than the outer diameter of the temperature measurement portion 310, and the temperature measurement portion 310 is inserted into the lumen 201 and is in interference fit with the lumen wall of the lumen 201, so that the temperature measurement portion 310 is in contact with the entire lumen wall of the lumen 201, and the accuracy of temperature monitoring is ensured. Generally, the tube 210 has a small thickness, which is easily axially slid with the thermometric part 310, and may cause the thermometric part 310 to slip out of the lumen 201. In view of this problem, the heat-conducting sleeve 200 preferably further comprises a fastener connected to the tube body 210 and configured to apply a force to the thermometric section 310 so as to keep the tube body 210 and the thermometric section 310 relatively stationary, thereby maintaining the thermometric section 310 in the lumen 201 and continuously monitoring the temperature of the heat-conducting sleeve 200.

In one non-limiting implementation, the lumen 201 has axially opposed first and second ends. The fastener includes a resilient tab 230, the resilient tab 230 having opposing third and fourth ends. The third end of the elastic pressing piece 230 is connected to the end of the first end of the lumen 201, and the fourth end of the elastic pressing piece 230 extends in a direction toward the inside of the lumen 201. When the temperature measuring part 310 is inserted into the lumen 201, the temperature measuring part 310 presses the elastic pressing piece 230, so that the fourth end of the elastic pressing piece 230 moves towards the outside of the lumen 201, the elastic pressing piece 230 generates an elastic force, the elastic force reacts on the temperature measuring part 310, and the temperature measuring part 310 is pressed against the wall of the lumen 201, thus, the friction force between the temperature measuring part 310 and the wall of the lumen 201 is increased, and the relative sliding cannot be generated between the temperature measuring part 310 and the wall of the lumen 201. When the temperature measuring part 310 is disassembled, an operator can firstly pull the fourth end of the elastic clamping piece 230 outwards and then pull out the temperature measuring part 310, so as to avoid damaging the temperature measuring part 310.

Further, the heat conducting sleeve 200 further includes a limiting piece 240 connected to the first end of the lumen 201 for limiting the maximum length of the temperature measuring part 310 inserted into the lumen 201. Preferably, the first end of the lumen 201 has a first edge and a second edge, and the first edge is further from the second end. The elastic pressing piece 230 is connected to the second edge, and the limiting piece 240 is connected to the first edge. In this way, the temperature measuring part 310 is used for entering the lumen 201 from the second end of the lumen 201, and when reaching the elastic pressing piece 230, the fourth end of the elastic pressing piece 230 is supported, so that the fourth end of the elastic pressing piece 230 moves towards the outside of the lumen 201 until the temperature measuring part 310 abuts against the limiting piece 240, which indicates that the temperature measuring part 310 is installed in place, and in addition, the elastic pressing piece 230 presses against the temperature measuring part 310 under the action of its own elastic force, and presses against the cavity wall of the lumen 201, so that the temperature measuring part 310 and the tube body 210 keep relatively static.

In order to facilitate the temperature measuring part 310 to accurately enter the lumen 201 and prevent the end part of the second end of the lumen 201 from scratching the temperature measuring part 310, the heat conducting sleeve 200 further comprises a guiding part 250 disposed at the second end of the lumen 201 for guiding the temperature measuring part 310 to enter the lumen 201. Specifically, the guiding portion 250 may be a tapered structure, and the cross section of the tapered structure gradually increases from the first end to the second end of the lumen 201.

As shown in fig. 4 and 5, the temperature monitoring device 300 is, for example, an NTC, and further includes a lead portion 320, one end of the lead portion 320 is connected to the temperature measuring portion 310, and the other end is provided with a plug portion 330, and the plug portion 330 is used for connecting to an external control mechanism. The temperature monitoring device 300 further includes a mounting block 340, wherein the mounting block 340 is disposed at a predetermined position of the lead portion 320 and is used for connecting with the stator 110 to prevent the temperature measuring portion 310 from being accidentally pulled out. Alternatively, the mounting block 340 has an injection molding groove 341, and the lead part 320 may pass through the injection molding groove 341 and then be injection-molded and connected. After the thermometric section 310 is inserted into the lumen 201, the mounting block 340 may be connected to any suitable position of the stator by the bolt 400, or connected to any suitable position of the stator by any other suitable manner, which is not limited by the present invention.

Further, the embodiment of the utility model provides a motor is still provided, including motor body and heat conduction pipe, motor body includes stator winding, heat conduction sleeve pipe with stator winding connects to a lumen has, the lumen is used for loading a temperature sensor's temperature measurement portion, just at least part chamber wall of lumen with the contact of temperature measurement portion.

Although the present invention is disclosed above, it is not limited thereto. Various modifications and alterations of this invention may be made by those skilled in the art without departing from the spirit and scope of this invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.

Claims

1. An electric machine assembly, comprising:

a motor body including a stator winding;

2. The motor assembly of claim 1, wherein the heat conducting sleeve comprises a tube body, the tube body is provided with the tube cavity, and the inner diameter of the tube cavity is smaller than the outer diameter of the temperature measuring part, so that the tube cavity and the temperature measuring part are in interference fit.

3. The motor assembly of claim 2, wherein the heat conducting sleeve further comprises a fastener coupled to the tubular body and configured to apply a force to the thermometric section such that the thermometric section and the heat conducting sleeve remain relatively stationary.

4. The motor assembly of claim 3, wherein the lumen extends axially through the tubular body and has first and second opposite ends;

5. The motor assembly of claim 4, wherein the end of the first end of the lumen has a first edge and a second edge, the first edge being further from the end of the second end of the lumen, and the second edge being connected to the resilient tab;

6. The motor assembly of claim 4, wherein the thermally conductive sleeve further comprises a guide connected to an end of the second end of the lumen; the guide part is of a conical structure, and the cross section of the guide part is gradually increased along the direction from the first end to the second end of the tube cavity.

7. The electric machine assembly of claim 2, wherein the heat conducting sleeve further comprises a weld plate having two weld faces, one of the weld faces being welded to the outer surface of the tubular body and the other weld face being welded to the stator winding.

8. The electric machine assembly of claim 1, wherein the machine body further comprises a stator, the stator windings being disposed on the stator;

9. The electric machine assembly of claim 8, wherein the mounting block is injection molded at the predetermined location of the lead portion.

10. The motor is characterized by comprising a motor body and a heat conducting sleeve; the motor body comprises a stator winding; the heat conduction sleeve is connected with the stator winding and is provided with a tube cavity, the tube cavity is used for loading a temperature measuring part of a temperature monitoring device, and at least part of the wall of the tube cavity is in contact with the temperature measuring part.