Temperature sensor fixing device and motor

Abstract

The utility model belongs to the technical field of vehicle motor temperature detection, and particularly relates to a temperature sensor fixing device and a motor, the temperature sensor fixing device is used for fixing a temperature sensor on a connecting assembly of the motor, and the temperature sensor fixing device comprises a gland which is provided with a connecting part used for connecting a three-phase connecting piece, the limiting part is used for being matched with the temperature sensor; wherein the connecting part and the limiting part are assembled in a way that when the connecting part is connected with the three-phase connecting piece of the connecting assembly, the limiting part can press the temperature sensor in contact with the three-phase copper bar of the connecting assembly on the three-phase copper bar. The temperature sensor fixing device is fixed on the three-phase connecting piece through the buckle structure, and the temperature sensor is tightly pressed on the three-phase copper bar through the elastic element, so that the temperature sensor is tightly attached to the three-phase copper bar, and the temperature measurement precision is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle motor temperature detection, and in particular relates to a temperature sensor fixing device and a motor. Background Art

[0002] The temperature control of vehicle motors is an important factor that limits the efficiency of motor performance. In order to fully exert and utilize the performance of motors while ensuring safety, it is crucial to monitor the temperature inside the motors. Currently, the temperature measuring elements used to drive motors mainly use negative temperature coefficient thermistors (NTCs). The temperature measuring elements are embedded in the stator windings or three-phase connectors of the motors to monitor the motor temperature in real time. At the same time, in order to improve the safety of the motor temperature monitoring system, multiple NTCs can be arranged to improve the system redundancy. When the main NTC fails, the temperature measurement data of the backup NTC can be read to ensure the safe operation of the motor.

[0003] At present, the existing NTC layout schemes mostly adopt copper brackets to fix on the stator winding or three-phase connector, or insert into the middle of the stator winding layer, or fix on the stator winding by binding strips or tie wraps. When multiple NTCs need to be set according to the above layout scheme, if the copper bracket fixing scheme is adopted, interference will be caused between adjacent copper brackets, and the space of the motor will be seriously occupied. The large spacing between multiple NTCs will also affect the data results of temperature detection; if the insertion fixing scheme is adopted, it cannot be guaranteed that the temperature measuring head and the stator winding are in contact with the ideal position during manual installation, and the temperature detection effect is difficult to guarantee. It will also occupy the space of the motor, and the spacing between multiple NTCs will be correspondingly large; if the winding fixing scheme is adopted, the binding method is complicated, the manual influence factor is high, the beat is difficult to control, and it is affected by the size parameters and specifications of the stator winding. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the utility model is to provide a fixing solution for temperature sensors, which can fix multiple NTCs in similar areas to reduce the temperature difference between them, and is easy to install and disassemble, greatly shortening the production cycle.

[0005] To achieve the above-mentioned purpose and other related purposes, the utility model provides a temperature sensor fixing device for fixing the temperature sensor on a connection component of a motor, wherein the connection component includes a three-phase connector and a three-phase copper busbar, and the temperature sensor fixing device includes: a gland, provided with a connecting portion for connecting the three-phase connector, and a limiting portion for cooperating with the temperature sensor; wherein the connecting portion and the limiting portion are assembled so that when the connecting portion is connected to the three-phase connector, the limiting portion can press the temperature sensor in contact with the three-phase copper busbar onto the three-phase copper busbar.

[0006] According to a specific embodiment of the utility model, the limiting portion includes an elastic element, and the elastic element is assembled to apply an elastic force toward the three-phase copper busbar to the temperature sensor when the connecting portion is connected to the three-phase connecting piece.

[0007] A motor comprises: a connection assembly, comprising a three-phase connection piece and a three-phase copper busbar, wherein a part of the structure of the three-phase copper busbar is embedded in the three-phase connection piece; a temperature sensor, which contacts the three-phase copper busbar; and a pressure cover, which is detachably mounted on the three-phase connection piece and presses the temperature sensor.

[0008] According to a specific embodiment of the utility model, the gland includes: a connecting portion for connecting the three-phase connector and a limiting portion for cooperating with a temperature sensor; wherein, the connecting portion and the limiting portion are assembled so that when the connecting portion is connected to the three-phase connector, the limiting portion can press the temperature sensor in contact with the three-phase copper busbar onto the three-phase copper busbar.

[0009] According to a specific embodiment of the utility model, the gland is configured as a U-shaped structure, and the connecting parts are respectively provided on both sides of the opening thereof.

[0010] According to a specific embodiment of the utility model, the width of the gland opening is adapted to the width of the three-phase connector, the connecting portion is configured as a through hole, and the three-phase connector is provided with a protrusion matching the through hole.

[0011] According to a specific embodiment of the utility model, the limiting portion includes an elastic element, and the elastic element is assembled to apply an elastic force toward the three-phase copper busbar to the temperature sensor when the connecting portion is connected to the three-phase connecting piece.

[0012] According to a specific embodiment of the utility model, the elastic element is fixedly arranged on the pressure cover.

[0013] According to a specific embodiment of the utility model, the elastic element is configured to form a plane unit and an action unit, the plane unit is fixedly connected to the pressure cover, and the action unit is configured to be able to be compressed or stretched in a direction perpendicular to the plane unit.

[0014] According to a specific embodiment of the utility model, a T-shaped mounting groove is provided on the gland along the horizontal direction of the plane where the gland is located, and the plane unit is embedded in the T-shaped mounting groove along the horizontal direction to be fixed to the gland.

[0015] According to a specific embodiment of the utility model, a limiting unit is further provided on the plane unit, and the limiting unit is assembled to limit the displacement of the plane unit along the length direction of the T-shaped installation groove.

[0016] According to a specific embodiment of the utility model, the limiting unit is configured to have an angle with the plane unit that is at least greater than 0, and a slot matching the limiting unit is provided on the side of the T-shaped mounting slot so that the limiting unit can be embedded in the slot.

[0017] According to a specific embodiment of the present utility model, the shape of the side of the action unit for being attached to the temperature sensor is adapted to the shape of the temperature sensor.

[0018] According to a specific embodiment of the utility model, at least two temperature sensors are included, and the temperature sensors are arranged adjacent to each other.

[0019] The utility model provides a temperature sensor fixing device for detecting the temperature of a motor. The device can arrange multiple temperature sensors in similar areas on a three-phase copper busbar to reduce the temperature difference between different temperature sensors. The temperature sensor fixing device is fixed to the three-phase connector by a snap-on structure, which is convenient for installation and disassembly, is conducive to replacing the temperature sensor, and shortens the production cycle. At the same time, the temperature sensor fixing device presses the temperature sensor onto the three-phase copper busbar through an elastic element, so that it fits tightly with the three-phase copper busbar, thereby improving the temperature measurement accuracy accordingly. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of a specific embodiment of a temperature sensor fixing device provided by the utility model;

[0021] Figure 2 A schematic structural diagram of a specific embodiment of a temperature sensor fixing device provided by the utility model in which a gland is not assembled;

[0022] Figure 3 A structural schematic diagram of a specific embodiment of a limiter in a temperature sensor fixing device provided by the utility model;

[0023] Figure 4 Another structural schematic diagram of a specific embodiment of a limiter in a temperature sensor fixing device provided by the utility model;

[0024] Figure 5 A structural schematic diagram of a specific embodiment of a temperature sensor fixing device provided by the utility model after the gland is assembled;

[0025] Figure 6 It is a structural schematic diagram of another specific embodiment of a limit part in a temperature sensor fixing device provided by the utility model;

[0026] Figure 7 A schematic diagram of the structure of a specific embodiment of a motor provided by the utility model;

[0027] Figure 8 The utility model provides a motor of a specific embodiment of the assembly diagram. DETAILED DESCRIPTION

[0028] The following describes the implementation of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific implementations, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0029] It should be noted that the illustrations provided in the following embodiments are only used to schematically illustrate the basic concept of the present invention, and thus the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0030] Example 1

[0031] See also Figure 1-6 As shown, a temperature sensor fixing device includes: a gland 100, which can be used to fix the temperature sensor on the three-phase connector, so that the temperature sensor can detect the working temperature of the motor through the three-phase copper bar. It should be noted here that the three-phase connector is the only mechanical structure between the motor stator winding and the three-phase copper bar. The stator winding is electrically connected to the electronic control unit through the three-phase copper bar, and the three-phase connector is used to fix the three-phase copper bar.

[0032] Specifically, the gland 100 includes a connection portion 110 and a stop portion 120. The connection portion 110 is used to connect the three-phase connector so that the gland 100 can be fixedly installed on the three-phase connector, and the stop portion 120 is used to cooperate with the temperature sensor to fix it. Therefore, when the gland 100 is fixedly installed on the three-phase connector through the connection portion 110, the temperature sensor can also be pressed onto the three-phase copper busbar through the stop portion 120.

[0033] In a specific embodiment, if Figure 3 As shown, the limiting portion 120 is formed as an elastic element and is correspondingly fixed on the gland 100. By applying the elastic force of the elastic element to the temperature sensor, the elastic element can be pressed against the three-phase copper busbar, thereby completing the fixation of the temperature sensor. Preferably, the elastic element can be compressed or stretched in the vertical direction of the plane where the temperature sensor is located to apply an elastic force toward the three-phase copper busbar to the temperature sensor. Specifically, for example, when the gland has not been fixedly installed with the three-phase connector, the elastic element is in an extended state, and because the elastic element is arranged between the temperature sensor and the gland 100, and the temperature sensor is arranged in contact with the three-phase copper busbar, when the gland is fixedly installed with the three-phase connector, the elastic element is relatively squeezed to switch it to a compressed state, and the elastic force of the elastic element can be applied to the temperature sensor.

[0034] It should be noted that in this embodiment, the shape and size of the elastic element are not limited to Figure 3 The elastic element shown, for example, a spring can also press the temperature sensor onto the three-phase copper busbar. Without departing from the spirit of the present invention, modifications and improvements made to the embodiments of the present invention by those skilled in the art still fall within the scope of the patent application of the present invention.

[0035] In order to better fix the temperature sensor, the limiter 120, i.e., the elastic element and the pressure cover 100, are fixedly connected to prevent the elastic element from slipping or shifting in a compressed state. Figure 2 As shown, the bottom of the gland is provided with a T-shaped mounting groove 130 along the horizontal direction of the plane where the gland is located, so that the elastic element can be embedded in the bottom of the gland and fixed. Figure 3 As shown, a plane unit 121 and an action unit 122 are formed. The plane unit can cooperate with the T-shaped mounting groove 130 and be slidably embedded in the T-shaped mounting groove 130 to fix the elastic element. The action unit 122 can be compressed or stretched to apply a force to the temperature sensor toward the three-phase copper busbar.

[0036] Furthermore, a limiting unit 123 is also provided on the plane unit 121 to limit the displacement of the plane unit 121 along the T-shaped mounting groove 130. It can be understood that if it is necessary to limit the sliding of the plane unit 121 along the T-shaped mounting groove 130, then there is at least a certain angle between the limiting unit 123 and the plane unit 121 to limit its movement in directions other than the sliding direction of the plane unit 121. For details, please refer to Figure 4 In addition, a slot matching with the limit unit 123 is also provided on the side of the T-shaped installation slot 130. After the limit unit 123 is embedded in the corresponding slot, the displacement of the plane unit 121 along its sliding direction can be limited, thereby completing the fixing of the elastic element and the pressure cover 100.

[0037] For the assembly of specific elastic elements, please refer to Figure 5 As shown, first adjust the angle between the limit unit 123 and the plane unit 121 to a size that does not affect the sliding of the plane unit 121 along the T-shaped mounting groove 130, slide the elastic element into the T-shaped mounting groove 130, and at this time the position of the limit unit 123 just corresponds to the slot on the T-shaped mounting groove 130, and then adjust the angle between the limit unit 123 and the plane unit 121 to make it embedded in the slot, thereby completing the fixing of the elastic unit. After the fixing is completed, the elastic element has the function of the T-shaped mounting groove, which can limit its movement in the direction perpendicular to the bottom of the gland 100, and the function of the limit unit 123, which can limit its movement along the T-shaped mounting groove 130, so that when the gland 100 and the three-phase connector are fixedly installed and switched to a compressed state, the elastic force can be reliably applied to the temperature sensor, so that the temperature sensor always remains in contact with the three-phase copper busbar for temperature detection.

[0038] It should be noted that the plane unit 121, the action unit 122 and the limit unit 123 can be made in one piece to form an elastic element, and the fixing method between the elastic element and the pressure cover 100 is also not limited to the above-mentioned method. For example, it can also be fixed by bolts, gluing, etc. The modifications and embellishments made to the embodiments of the utility model by those skilled in the art without departing from the spirit of the utility model still fall within the scope of the patent application of the utility model.

[0039] In addition, the elastic element action unit 122 can be set according to the number and shape of the temperature sensor, such as Figure 3 and Figure 4 The elastic element shown can be arranged corresponding to two flat temperature sensors, or as Figure 6The elastic element shown can be set corresponding to a single flat temperature sensor, and can be adjusted according to the setting requirements of the temperature sensor. The side of the action unit 122 that fits the temperature sensor can be adapted to the shape of the temperature sensor to facilitate compression. There are no excessive restrictions on this. Figure 3 , 4 The U-shaped shape of the action unit 122 in the elastic element shown in 6 is only a preferred embodiment. For example, it can also be a Z-shaped, O-shaped, etc., which can be adjusted according to actual needs without too many restrictions.

[0040] Example 2

[0041] See also Figure 7 , 8 As shown, a motor includes: a connection component 200, a temperature sensor 300, and the gland 100 in the above embodiment. The connection component 200 is composed of a three-phase connector 210 and a three-phase copper bar 220, which corresponds to the three-phase connector and the three-phase copper bar mentioned in the above embodiment, and the three-phase copper bar 220 is embedded in the three-phase connector 210. For example, after the three-phase copper bar 220 is cast, the three-phase connector 210 can be directly injection molded on the three-phase copper bar 220 through a mold to form an integrated connection component 200, and no excessive restrictions are made on this.

[0042] At least one temperature sensor 300 can be arranged on the three-phase connector 210 and directly contact the three-phase copper bar 220. It should be noted here that, due to customer needs or in order to improve the safety of the motor temperature monitoring system, multiple temperature sensors are usually arranged to improve redundancy. Therefore, when multiple temperature sensors 300 are arranged, it is necessary to make the temperature sensors as close to each other as possible to avoid differences in the detection results. In this embodiment, specifically taking two temperature sensors 300 as an example, the two temperature sensors 300 are arranged adjacent to each other and fit with the three-phase copper bar 220. Since the three-phase copper bar 220 is wrapped with the three-phase connector 210, part of the three-phase copper bar 220 can be exposed in the form of slotting the three-phase connector 210, which is used to arrange the temperature sensor 300, and the slot position can also be conducive to fixing the temperature sensor 300, and the temperature sensor 300 can be better fit with the three-phase copper bar 220 under the force applied by the gland 100.

[0043] Further, if Figure 1 , 2 As can be seen from Figures 5, 7, and 8, the gland 100 is configured as a U-shaped structure, and the connecting parts 110 are arranged on both sides of its opening so as to be detachably connected to the three-phase connector. Figure 8As shown, the connection portion 110 is set as a through hole, and a protrusion that matches the through hole is formed at a corresponding position of the three-phase connector 210. The gland 100 and the three-phase connector 210 are fixedly installed by the structure in which the through hole and the protrusion are locked with each other, and the structure in which the through hole and the protrusion are locked with each other also facilitates the removal of the gland 100, so that the temperature sensor 300 can be replaced or repaired. It can be understood that the width of the opening of the gland 100 needs to be adapted to the width of the three-phase connector, so that the through hole and the protrusion can be locked with each other.

[0044] It should be noted that the shape of the gland 100 is not limited to that mentioned in the present embodiment, and the connection portion 110 on the gland 100 is not limited to a through hole. The shape of the gland can be adjusted according to the structure of the connection portion 110. For example, the gland 100 is still U-shaped, and the connection portions on both sides of its opening are formed into long grooves. The three-phase connector is provided with a slide rail matching the long groove to complete the fixed installation of the gland 100 and the three-phase connector, etc. There are no excessive restrictions on this. Without departing from the spirit of the present invention, the modifications and embellishments made to the embodiments of the present invention by those skilled in the art still fall within the scope of the patent application of the present invention.

[0045] In summary, the utility model provides a temperature sensor fixing device for detecting the temperature of a motor, which can arrange multiple temperature sensors in similar areas on a three-phase copper busbar to reduce the temperature difference between different temperature sensors accordingly. The temperature sensor fixing device is fixed to the three-phase connector by a snap-on structure, which is easy to install and disassemble, and is conducive to replacing the temperature sensor and shortening the production cycle. At the same time, the temperature sensor fixing device presses the temperature sensor onto the three-phase copper busbar through an elastic element, so that it fits tightly with the three-phase copper busbar, which correspondingly improves the temperature measurement accuracy.

[0046] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

[0047] In the description herein, many specific details, such as examples of components and / or methods, are provided to provide a complete understanding of the embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more specific details or by other devices, systems, components, methods, components, materials, parts, etc. In other cases, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of the embodiments of the present invention.

[0048] References throughout the specification to "one embodiment," "an embodiment," or "a specific embodiment" mean that a particular feature, structure, or characteristic described in conjunction with the embodiment is included in at least one embodiment of the present invention, and not necessarily in all embodiments. Thus, various appearances of the phrases "in one embodiment," "in an embodiment," or "in a specific embodiment" in different places throughout the specification do not necessarily refer to the same embodiment. In addition, the particular features, structures, or characteristics of any specific embodiment of the present invention may be combined with one or more other embodiments in any suitable manner. It should be understood that other variations and modifications of the embodiments of the present invention described and illustrated herein may be based on the teachings herein and will be considered part of the spirit and scope of the present invention.

[0049] It should also be understood that one or more of the elements shown in the figures may also be implemented in a more separate or more integrated manner, or even removed because they are inoperable in certain circumstances or provided because they may be useful depending on the application.

[0050] In addition, unless otherwise explicitly indicated, any marking arrows in the drawings should be regarded as exemplary only and not limiting. In addition, unless otherwise indicated, the term "or" used herein is generally intended to mean "and / or". In the case where the term is not clear because it is anticipated that the ability to separate or combine is provided, the combination of components or steps will also be regarded as indicated.

[0051] As used in the description herein and throughout the claims that follow, "a", "an", and "the" include plural references unless otherwise indicated. Likewise, as used in the description herein and throughout the claims that follow, the meaning of "in" includes "in" and "on" unless otherwise indicated.

[0052] The above description of the illustrated embodiments of the present invention (including that described in the Abstract of the Specification) is not intended to be an exhaustive list or to limit the present invention to the precise form disclosed herein. Although specific embodiments of the present invention and examples of the present invention are described herein for illustrative purposes only, various equivalent modifications are possible within the spirit and scope of the present invention as will be recognized and understood by those skilled in the art. As noted, these modifications may be made to the present invention in accordance with the above description of the embodiments described in the present invention, and these modifications will be within the spirit and scope of the present invention.

[0053] Systems and methods have been generally described herein as details that are helpful for understanding the present invention. In addition, various specific details have been given to provide an overall understanding of the embodiments of the present invention. However, those skilled in the relevant art will recognize that the embodiments of the present invention can be practiced without one or more specific details, or practiced using other devices, systems, accessories, methods, components, materials, parts, etc. In other cases, well-known structures, materials, and / or operations are not specifically shown or described in detail to avoid confusion with various aspects of the embodiments of the present invention.

[0054] Thus, although the present invention has been described herein with reference to specific embodiments thereof, freedom of modification, various changes and substitutions are also within the above disclosure, and it should be understood that in some cases, some features of the present invention will be adopted without corresponding use of other features without departing from the scope and spirit of the proposed utility model. Therefore, many modifications can be made to adapt specific environments or materials to the essential scope and spirit of the present utility model. The present utility model is not intended to be limited to the specific terms used in the claims below and / or the specific embodiments disclosed as the best mode for carrying out the present utility model, but the present utility model will include any and all embodiments and equivalents falling within the scope of the appended claims. Therefore, the scope of the present utility model will be determined solely by the appended claims.

Claims

1. A temperature sensor fixing device, characterized in that: Used to fix the temperature sensor on the connection assembly of the motor, the connection assembly includes a three-phase connector and a three-phase copper busbar, and the temperature sensor fixing device includes: A gland, provided with a connection portion for connecting the three-phase connector and a limit portion for cooperating with the temperature sensor; The connection portion and the limiting portion are assembled so that when the connection portion is connected to the three-phase connector, the limiting portion can press the temperature sensor in contact with the three-phase copper busbar onto the three-phase copper busbar.

2. The temperature sensor fixing device according to claim 1, characterized in that: The limiting portion includes an elastic element, and the elastic element is assembled to apply an elastic force toward the three-phase copper busbar to the temperature sensor when the connecting portion is connected to the three-phase connecting piece.

3. A motor, characterized in that: include: A connection assembly, comprising a three-phase connection piece and a three-phase copper busbar, wherein a part of the structure of the three-phase copper busbar is embedded in the three-phase connection piece; A temperature sensor is in contact with the three-phase copper busbar; A pressure cover is detachably mounted on the three-phase connecting piece and presses the temperature sensor.

4. The motor according to claim 3, characterized in that The gland includes: a connecting portion for connecting the three-phase connector and a limiting portion for cooperating with the temperature sensor; The connection portion and the limiting portion are assembled so that when the connection portion is connected to the three-phase connector, the limiting portion can press the temperature sensor in contact with the three-phase copper busbar onto the three-phase copper busbar.

5. The motor according to claim 4, characterized in that The gland is configured as a U-shaped structure, and the connecting parts are respectively arranged on both sides of the opening thereof.

6. The motor according to claim 5, characterized in that The width of the gland opening is adapted to the width of the three-phase connector. The connecting portion is configured as a through hole, and the three-phase connecting piece is provided with a protrusion matched with the through hole.

7. The motor according to claim 4, characterized in that The limiting portion includes an elastic element, and the elastic element is assembled to apply an elastic force toward the three-phase copper busbar to the temperature sensor when the connecting portion is connected to the three-phase connecting piece.

8. The motor according to claim 7, characterized in that The elastic element is fixedly arranged on the pressure cover.

9. The motor according to claim 8, characterized in that The elastic element is configured to form a plane unit and an action unit, The plane unit is fixedly connected to the pressure cover, and the action unit is configured to be able to be compressed or stretched along a direction perpendicular to the plane unit.

10. The motor according to claim 9, characterized in that The gland is provided with a T-shaped installation groove along the horizontal direction of the plane where the gland is located, and the plane unit is embedded in the T-shaped installation groove along the horizontal direction and fixed to the gland.

11. The motor according to claim 10, characterized in that The plane unit is also provided with a limiting unit, and the limiting unit is assembled to limit the displacement of the plane unit along the length direction of the T-shaped installation groove.

12. The motor according to claim 11, characterized in that The limiting unit is configured to have an angle with the plane unit that is at least greater than 0, and a slot matching the limiting unit is provided on the side of the T-shaped mounting slot so that the limiting unit can be embedded in the slot.

13. The motor according to claim 9, characterized in that The shape of the side of the action unit for being attached to the temperature sensor is adapted to the shape of the temperature sensor.

14. The motor according to claim 3, characterized in that At least two temperature sensors are included, and the temperature sensors are arranged adjacent to each other.

Images