Base, signal terminal, power module, motor controller and vehicle

Abstract

The utility model relates to a base, a signal terminal, a power module, a motor controller and a vehicle. The base includes a body. The main body is used for connecting signal pins of the signal terminals. And an anti-falling structure is arranged on the main body. The anti-falling structure is used for preventing the signal pin from being separated from the main body. According to the technical scheme provided by the invention, on the basis of reserving the technical scheme that the welding area between the signal pin and the substrate is increased by additionally arranging the base in the related technology, the structure of the base is further improved, that is, the anti-falling structure is arranged on the main body of the base, so that the signal pin can be prevented from being separated from the base; finally, the signal pin can be reliably connected with the substrate through the base, and signal transmission is carried out.

Description

Technical Field

[0001] The present disclosure relates to the technical field of power module manufacturing, and particularly to a base, a signal terminal, a power module, a motor controller, and a vehicle. Background Art

[0002] In the new energy electric vehicle industry, the motor controller, a key device, is a key component vigorously developed by each vehicle manufacturer. Its development trends are mainly high voltage and high power density, etc. As the most core component in the motor controller - the semiconductor power module, the reliability of its performance is directly related to the performance of the entire electric control product, and even related to the life safety of passengers. Therefore, studying the reliability of the semiconductor power module has become a difficult problem that everyone is trying to overcome.

[0003] In the related art, the semiconductor power module is encapsulated by the HPD packaging form. The semiconductor power module mainly includes signal pins and a DBC substrate connected to the signal pins. During use, due to the mismatch of the CTE (coefficient of thermal expansion) among the PCB, the housing, and the plastic housing of the semiconductor power module, when the PCB expands at high temperatures, it will drive the signal pins to move, thereby continuously applying a force to the welding layer between the signal pins and the DBC substrate. In this way, as the temperature continuously changes, the welding layer will eventually crack or come off, resulting in the problem that the signal pins are disconnected from the DBC substrate and the signal is interrupted.

[0004] In response to this, in the related art, a welding base is added to the bottom of the signal pins to increase the welding area between the signal pins and the DBC substrate, thereby improving the connection reliability between the signal pins and the DBC substrate. Although this connection method improves the connection reliability between the signal pins and the DBC substrate to a certain extent, the added welding base and the signal pins are only connected by an interference fit method, which results in the problem of unreliable connection between the signal pins and the welding base. Summary of the Utility Model

[0005] To overcome the problems existing in the related art, the present disclosure provides a base, a signal terminal, a power module, a motor controller, and a vehicle to further improve the connection reliability between the signal pins and the base, and to at least partially solve the related technical problems.

[0006] According to the first aspect of the embodiments of the present disclosure, a base is provided. The base includes a main body for connecting the signal pins of the signal terminal, and an anti - detachment structure is provided on the main body, and the anti - detachment structure is used to prevent the signal pins from separating from the main body.

[0007] Optionally, the main body has a channel for the signal pins to penetrate through, and the anti - detachment structure is used to prevent the signal pins from detaching from the channel.

[0008] Optionally, the anti - detachment structure is disposed within the channel.

[0009] Optionally, the channel includes a first channel and a second channel that are in communication with each other, such that the signal pin is inserted through the second channel and partially protrudes out of the first channel. The inner diameter of the first channel is smaller than the inner diameter of the second channel, so as to form a shoulder at the communication portion between the first channel and the second channel. The shoulder serves as the anti - detachment structure for stopping the signal pin from detaching from the second channel.

[0010] Optionally, the main body is a cylinder, and the outer diameter of the cylinder at the second channel is greater than the outer diameter of the cylinder at the first channel.

[0011] Optionally, the anti - detachment structure includes a protruding structure that protrudes from the inner wall of the channel.

[0012] Optionally, the channel has a first end for inserting the signal pin and a second end for the signal pin to partially protrude out. The first end of the main body has a flange that extends radially outward along the channel, and a plurality of notches are arranged at intervals along the circumferential direction of the channel on the flange and the main body.

[0013] Optionally, the main body includes a cylinder, and the notch includes a first notch and a second notch that are in communication with each other. The first notch is formed on the flange, and the second notch is formed on the cylinder.

[0014] According to a second aspect of the embodiments of the present disclosure, a signal terminal is provided. The signal terminal includes the above - mentioned base and signal pin.

[0015] According to a third aspect of the embodiments of the present disclosure, a signal terminal is provided. The signal terminal includes:

[0016] A signal pin having a mating structure;

[0017] A base including a main body, the main body being connected to the signal pin, and an anti - detachment structure is provided on the main body. The anti - detachment structure cooperates with the mating structure to stop the signal pin from separating from the main body.

[0018] Optionally, the main body has a channel for the signal pin to penetrate through, the anti - detachment structure is disposed within the channel, and the mating structure is stopped by the anti - detachment structure.

[0019] Optionally, the channel includes a first channel and a second channel that are in communication with each other, so that the signal pin is inserted from the second channel and partially penetrates out of the first channel. The inner diameter of the first channel is smaller than the inner diameter of the second channel to form a shoulder at the communication portion between the first channel and the second channel. The shoulder serves as the anti - detachment structure, and the mating structure is a stop structure protruding from the outer wall of the signal pin. The stop structure abuts against the shoulder.

[0020] Optionally, the signal pin is in interference fit with the first channel.

[0021] According to a fourth aspect of the embodiments of the present disclosure, a power module is provided. The power module includes a substrate and the signal terminal described above, and the main body of the base is connected to the substrate.

[0022] According to a fifth aspect of the embodiments of the present disclosure, a motor controller is provided. The motor controller includes the power module described above.

[0023] According to a sixth aspect of the embodiments of the present disclosure, a vehicle is provided. The vehicle includes the motor controller described above.

[0024] Through the technical solutions provided by the embodiments of the present disclosure, namely, the base, the signal terminal, the power module, the motor controller, and the vehicle. Among them, the base includes a main body. An anti - detachment structure is provided on the main body, and the anti - detachment structure can be used to prevent the signal pin from separating from the main body. In the technical solutions provided by the present disclosure, on the basis of retaining the technical solution of increasing the welding area between the signal pin and the substrate by adding a base in the related art, the structure of the base is further improved, that is, an anti - detachment structure is provided on the main body of the base, thereby being able to prevent the signal pin from detaching from the base, and finally enabling the signal pin to reliably achieve connection with the substrate through the base for signal transmission. Further, the signal terminal including the base and the signal pin can have high reliability in use. Furthermore, the signal terminal can be reliably connected to the substrate through the base, enabling the power module to more reliably achieve signal transmission. Moreover, the motor controller equipped with the power module can more stably and reliably control the motor. Finally, the vehicle equipped with the motor controller can also have high driving safety.

[0025] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The drawings here are incorporated into the specification and constitute a part of this specification, showing embodiments consistent with the present disclosure and used together with the specification to explain the principles of the present disclosure.

[0027] Figure 1 It is a three-dimensional structure schematic diagram of a signal terminal provided according to an embodiment of the present disclosure;

[0028] Figure 2 It is a structure schematic diagram of a base provided according to an embodiment of the present disclosure;

[0029] Figure 3 It is a cross-sectional structure schematic diagram of a signal terminal provided according to an embodiment of the present disclosure;

[0030] Figure 4 It is a cross-sectional structure schematic diagram of a power module provided according to an embodiment of the present disclosure.

[0031] Explanation of reference numerals:

[0032] 100, signal terminal;

[0033] 1, base; 11, main body; 111, channel; 111a, first channel; 111b, second channel; 111c, shoulder; 111d, first end; 111e, second end; 112, flanging; 113, notch; 113a, first notch; 113b, second notch; 12, anti-disengagement structure; 13, cylinder;

[0034] 2, signal pin; 21, mating structure;

[0035] 200, substrate;

[0036] 300, power module. Detailed implementation manners

[0037] Here, the exemplary embodiments will be described in detail, and the examples are shown in the drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings represent the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present disclosure. On the contrary, they are merely examples of devices and methods consistent with some aspects of the present disclosure as detailed in the appended claims.

[0038] Unless otherwise stated, the directional terms such as "inside" and "outside" refer to the inside and outside of the contour of the corresponding component itself. In addition, the terms "first", "second", etc. used in the present disclosure are used to distinguish one element from another element and do not have sequentiality and importance.

[0039] It should be noted that all actions of obtaining signals, information or data in this application are carried out on the premise of complying with the corresponding data protection regulations and policies of the country where the device is located and with the authorization given by the owner of the corresponding device. The following will describe the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for the purpose of illustrating and explaining the present disclosure, and are not used to limit the present disclosure.

[0040] According to the first aspect of the embodiments of the present disclosure, as Figure 1 , Figure 2 and Figure 3 shown, a base 1 is provided. The base 1 may include a main body 11. The main body 11 is used to connect the signal pins 2 of the signal terminal 100. An anti-disengagement structure 12 is provided on the main body 11. The anti-disengagement structure 12 is used to prevent the signal pins 2 from separating from the main body 11.

[0041] Through the technical solution provided by the embodiments of the present disclosure, on the basis of retaining the technical solution of increasing the welding area between the signal pins 2 and the substrate 200 by adding the base 1 in the related art, the structure of the base 1 is further improved, that is, an anti-disengagement structure 12 is provided on the main body 11 of the base 1, so as to avoid the signal pins 2 from detaching from the base 1, and finally enable the signal pins 2 to reliably connect with the substrate 200 through the base 1 for signal transmission.

[0042] In some embodiments, the main body 11 has a channel 111 through which the signal pin 2 passes. The anti-disengagement structure 12 is used to prevent the signal pin 2 from disengaging from the channel 111. The channel 111 provided on the main body 11 for the signal pin 2 to pass through can, on the one hand, facilitate the connection between the signal pin 2 and the main body 11; on the other hand, when the signal pin 2 passes through the channel 111, the channel 111 can provide a certain degree of protection to the outer wall surface of the signal pin 2, avoiding bending, chipping, etc. of the signal pin 2; on the other hand, the setting of the channel 111 can also increase the connection area between the main body 11 and the signal pin 2, improving the connection reliability between the signal pin 2 and the main body 11. Here, it should be noted that the connection method between the signal pin 2 and the channel 111 of the main body 11 can be welding, bolt connection, bonding, etc., which is not limited here, and those skilled in the art can design according to the actual situation. In addition, the specific implementation method of the anti-disengagement structure 12 is not limited either, and it can be a protrusion, a card slot, a step, a detachable fastener, etc. The setting position of the anti-disengagement structure 12 is not limited either, and it can be set at the top, bottom, middle, or inside of the channel 111, etc. Those skilled in the art should understand that for the anti-disengagement structure 12, as long as it can achieve the purpose of preventing the signal pin 2 from disengaging from the channel 111, it is within the protection scope of this application. In some other embodiments not shown, the channel 111 can also be cancelled and the signal pin 2 can be directly connected to the base 1 through the anti-disengagement structure 12, and the anti-disengagement structure 12 can be, for example, a buckle, a fastener, etc., and the present disclosure does not make specific limitations on this.

[0043] As a specific embodiment, the anti-disengagement structure 12 is arranged inside the channel 111. Arranging the anti-disengagement structure 12 inside the channel 111 can, on the one hand, achieve a reliable anti-disengagement effect on the part of the signal pin 2 located inside the channel 111. The anti-disengagement structure 12 can have a relatively large anti-disengagement area relative to the signal pin 2. On the other hand, the anti-disengagement structure 12 located inside the channel 111 will not increase the size of the base 1 in either the length direction or the width direction. On the other hand, the anti-disengagement structure 12 arranged inside the channel 111 can avoid the problem of accidental collision resulting in anti-disengagement failure.

[0044] As a specific embodiment, the aforementioned channel 111 may include a first channel 111a and a second channel 111b that are connected and communicate with each other, such that the signal pin 2 is inserted through the second channel 111b and partially protrudes out of the first channel 111a. The inner diameter of the first channel 111a is smaller than the inner diameter of the second channel 111b, so as to form a shoulder 111c at the connection between the first channel 111a and the second channel 111b. The shoulder 111c serves as an anti-disengagement structure 12 for preventing the signal pin 2 from disengaging from the second channel 111b. In this embodiment, by designing the channel 111 as two sections with different inner diameters, namely the first channel 111a and the second channel 111b, a shoulder 111c is formed at the connection between the first channel 111a and the second channel 111b as the anti-disengagement structure 12. This forming method is simple and reliable, and the formed shoulder 111c as the anti-disengagement structure 12 can have relatively reliable usability.

[0045] In some embodiments, the main body 11 is a cylindrical body 13. The outer diameter of the cylindrical body 13 at the second channel 111b is greater than the outer diameter of the cylindrical body 13 at the first channel 111a. Designing the main body 11 as a cylindrical body 13 facilitates the formation of the base 1. For example, it is convenient to form the aforementioned first channel 111a and second channel 111b with different inner diameters and the anti-disengagement structure 12 inside the main body 11, and it is also convenient to reduce the mass of the base 1 to achieve the purpose of lightweight design. Of course, it can be understood that the main body 11 can be designed as a rectangular cylinder, a trapezoidal cylinder, a cylindrical cylinder, etc., which are not limited herein, and those skilled in the art can adjust according to the actual situation. As a specific embodiment, for example, if the signal pin 2 is a cylindrical needle body, then the cylindrical body 13 can be correspondingly designed as a cylindrical cylindrical body 13. On the one hand, this can facilitate the signal pin 2 to pass through the channel 111 conveniently and reliably to achieve the connection with the main body 11, and on the other hand, it can enable the signal pin 2 to have a larger contact area with the inner wall surface of the channel 111, improving the connection reliability between the main body 11 and the signal pin 2.

[0046] As another embodiment not shown in the figure, the anti-disengagement structure 12 may further include a protruding structure that protrudes from the inner wall of the channel 111. For example, the protruding structure is a convex block, a convex strip, etc., which are not limited herein, and those skilled in the art can design according to the actual situation. The protruding structure can divide the channel 111 into a first channel 111a and a second channel 111b, and the signal pin 2 can be inserted through the second channel 111b and partially protrude out of the first channel 111a and be blocked by the protruding structure.

[0047] In some embodiments, such as Figure 2 and Figure 3As shown, the channel 111 has a first end 111d for inserting the signal pin 2 and a second end 111e through which the signal pin 2 partially protrudes. The first end 111d of the main body 11 has a flange 112 extending radially outward along the channel 111. A plurality of notches 113 are arranged at intervals in the circumferential direction of the channel 111 on the flange 112 and the main body 11. The setting of the flange 112 can further increase the welding area between the base 1 and the substrate 200. Further, the plurality of notches 113 formed on the flange 112 are conducive to the solder climbing into the interior of the base 1, so as to achieve a reliable connection between the base 1 and the substrate 200.

[0048] In some embodiments, the main body 11 may include a cylinder 13. As Figure 2 shown, the notch 113 includes a first notch 113a and a second notch 113b that are connected. The first notch 113a is formed on the flange 112. The second notch 113b is formed on the cylinder 13. Such an arrangement of the first notch 113a and the second notch 113b is conducive to the solder reliably climbing into the interior of the base 1, and such a notch 113 structure is convenient to open, reducing the forming process difficulty of the base 1.

[0049] According to a second aspect of the embodiments of the present disclosure, a signal terminal 100 is provided. The signal terminal 100 may include the above-mentioned base 1 and signal pin 2. The signal terminal 100 including the base 1 and the signal pin 2 can have high use reliability.

[0050] According to a third aspect of the embodiments of the present disclosure, a signal terminal 100 is provided. The signal terminal 100 may include a signal pin 2 and a base 1. In this embodiment, the signal pin 2 may have a mating structure 21. The base 1 may include a main body 11. The main body 11 is connected to the signal pin 2. An anti-disengagement structure 12 is provided on the main body 11. The anti-disengagement structure 12 cooperates with the mating structure 21 to prevent the signal pin 2 from separating from the main body 11. In this embodiment, the signal pin 2 and the anti-disengagement structure 12 of the base 1 cooperate with each other through the mating structure 21 to avoid the problem of unreliable connection between the signal pin 2 and the base 1. This enables the signal terminal 100 including the base 1 and the signal pin 2 to have high use reliability.

[0051] In some embodiments, the main body 11 has a channel 111 for the signal pin 2 to penetrate through. The anti-disengagement structure 12 is arranged in the channel 111. The mating structure 21 abuts against the anti-disengagement structure 12. When the signal pin 2 passes through the channel 111, it can be blocked by the mating structure 21 against the anti-disengagement structure 12. When the signal pin 2 is subjected to an external force and has a tendency to move toward the side away from the base 1, the signal pin 2 can be stably blocked by the mating structure 21 against the anti-disengagement structure 12 on the base 1, thus avoiding the problem of signal interruption caused by the separation between the signal pin 2 and the base 1 and the separation between the signal pin 2 and the substrate 200.

[0052] In another embodiment (not shown), the channel 111 can be eliminated, and the signal pin 2 can be directly connected to the base 1 through the anti-disengagement structure 12. The anti-disengagement structure 12 can be a snap or a fastener, etc. The corresponding mating structure 21 can be, for example, a bayonet for mating with a snap, or a pin hole or a threaded hole for mating with a fastener, etc.

[0053] In a specific embodiment, the channel 111 includes a first channel 111a and a second channel 111b that are connected and communicate with each other, so that the signal pin 2 is inserted from the second channel 111b and partially penetrates out of the first channel 111a. The inner diameter of the first channel 111a is smaller than the inner diameter of the second channel 111b, so as to form a shoulder 111c at the connection of the first channel 111a and the second channel 111b. The shoulder 111c is the anti-disengagement structure 12. The mating structure 21 is a stop structure protruding from the outer wall of the signal pin 2. The stop structure stops at the shoulder 111c. For example, the stop structure can be configured as a stop boss protruding from the outer wall of the signal pin 2, and the stop boss can stop at the shoulder 111c. The anti-disengagement connection between the signal pin 2 and the base 1 is realized through the cooperation between the stop structure and the shoulder 111c. This implementation method is reliable and effective, and the manufacturing process is simple.

[0054] In some embodiments, the signal pin 2 is in interference fit with the first channel 111a. When the signal pin 2 is inserted from the second channel 111b and partially penetrates out of the first channel 111a, a part of the signal pin 2 can be in interference fit with the first channel 111a to realize the fixed connection between the signal pin 2 and the base 1. The interference fit method has a simple structure, good coaxiality, can withstand large axial forces, torques and dynamic loads, and ensures the reliable connection between the signal pin 2 and the base 1.

[0055] The signal terminal 100 provided in the third aspect of the present disclosure can include all the features or combinations of features of the base 1 provided in the first aspect above, and the present disclosure will not repeat them here.

[0056] According to the fourth aspect of the embodiments of the present disclosure, as Figure 4 shown, a power module 300 is provided. The power module 300 can include a substrate 200 and the signal terminal 100 provided in the second aspect or the third aspect above. The main body 11 of the base 1 is connected to the substrate 200. Here, it should be noted that the improvement point of this application does not involve the substrate 200. The substrate 200 can adopt any suitable structure in the prior art, such as a DBC substrate. For the sake of brevity of the text, the structure of the substrate 200 will not be repeated here. In this embodiment, the signal terminal 100 can be reliably connected to the substrate 200 through the base 1, so that the power module 300 can more reliably realize signal transmission. Among them, the power module 300 can be, for example, a semiconductor power module, such as an IGBT module or a SiC module, etc.

[0057] According to a fifth aspect of the embodiments of the present disclosure, a motor controller is provided. The motor controller may include a power module 300. In this embodiment, the motor controller installed with the power module 300 can relatively stably and reliably achieve the control of the motor.

[0058] According to a sixth aspect of the embodiments of the present disclosure, a vehicle is provided. The vehicle may include the above-mentioned motor controller. The vehicle installed with the motor controller can also have relatively high driving safety.

[0059] The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the protection scope of the present disclosure.

[0060] Those skilled in the art will readily think of other implementation manners of the present disclosure after considering the specification and practicing the present disclosure. The present disclosure aims to cover any variations, uses, or adaptive changes of the present disclosure, and these variations, uses, or adaptive changes follow the general principles of the present disclosure and include the common general knowledge or conventional technical means in the technical field not disclosed in the present disclosure. The specification and the embodiments are only regarded as exemplary, and the true scope and spirit of the present disclosure are pointed out by the following claims.

[0061] It should be understood that the present disclosure is not limited to the exact structures already described and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the present disclosure is only limited by the appended claims.

Claims

1. A base of a signal terminal, characterized in that: include: A main body, used for connecting a signal pin of a signal terminal, wherein an anti-detachment structure is provided on the main body, and the anti-detachment structure is used for preventing the signal pin from being separated from the main body; The main body has a channel for the signal needle to pass through, and the anti-slip structure is arranged in the channel, and the anti-slip structure is used to prevent the signal needle from escaping from the channel.

2. The base according to claim 1, characterized in that: The channel includes a first channel and a second channel that are connected, so that the signal needle is inserted into the second channel and partially passes through the first channel. The inner diameter of the first channel is smaller than the inner diameter of the second channel, so that a shoulder is formed at the connection between the first channel and the second channel. The shoulder is the anti-detachment structure, which is used to prevent the signal needle from detaching from the second channel.

3. The base according to claim 2, characterized in that: The main body is a cylinder, and the outer diameter of the cylinder at the second channel is greater than the outer diameter of the cylinder at the first channel.

4. The base according to claim 1, characterized in that: The anti-slip structure comprises a protruding structure protruding from the inner wall of the channel.

5. The base according to claim 1, characterized in that: The channel has a first end for inserting the signal needle and a second end for partially passing the signal needle. The first end of the main body has a flange extending radially outward along the channel. The flange and the main body are provided with a plurality of notches arranged at intervals along the circumference of the channel.

6. The base according to claim 5, characterized in that: The main body comprises a cylinder, and the notch comprises a first notch and a second notch which are connected to each other, wherein the first notch is formed on the flange, and the second notch is formed on the cylinder.

7. A signal terminal, characterized in that: It comprises the base and signal pin as described in any one of claims 1 to 6.

8. A signal terminal, characterized in that: include: A signal pin having a matching structure; The base comprises a main body, the main body is connected to the signal pin, an anti-slip structure is arranged on the main body, the anti-slip structure cooperates with the matching structure to prevent the signal pin from being separated from the main body; The main body has a channel for the signal needle to pass through, the anti-slip structure is arranged in the channel, and the matching structure is stopped by the anti-slip structure.

9. The signal terminal according to claim 8, characterized in that: The channel includes a first channel and a second channel that are connected, so that the signal needle is inserted into the second channel and partially passes through the first channel. The inner diameter of the first channel is smaller than the inner diameter of the second channel, so as to form a shoulder at the connection between the first channel and the second channel. The shoulder is the anti-slip structure, and the matching structure is a stop structure protruding from the outer wall of the signal needle, and the stop structure stops at the shoulder.

10. The signal terminal according to claim 9, characterized in that: The signal needle is interference-fitted with the first channel.

11. A power module, characterized in that: The invention comprises a substrate and the signal terminal according to any one of claims 7 to 10, wherein the main body of the base is connected to the substrate.

12. A motor controller, characterized in that: The invention comprises the power module as claimed in claim 11.

13. A vehicle, characterized in that: Includes the motor controller described in claim 12.

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