Connecting device and power electronic controller

Abstract

The utility model provides a connecting device and a power electronic controller. The connecting device comprises a guide assembly and a contact pin. The guide assembly comprises a first guide seat and a second guide seat which are arranged at an interval in the first direction; the contact pin comprises a first section, a second section and a third section which are sequentially connected along the direction from the first guide seat to the second guide seat; the second section is arranged between the first guide seat and the second guide seat and comprises an elastic first deformation section; one end, far away from the second section, of the first section penetrates through the first guide seat and extends to one side, far away from the second guide seat, of the first guide seat; the end, away from the second section, of the third section penetrates through the second guide base and extends to the side, away from the first guide base, of the second guide base. When the connecting device is applied to the power electronic controller, the production takt of the power electronic controller can be shortened, and the production cost of the power electronic controller can be reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobiles, and in particular relates to a connecting device and a power electronic controller. Background Art

[0002] With the rapid development of new energy vehicles, manufacturers have put forward higher requirements in terms of cost control and production rhythm in order to increase market share. As one of the key components of the three-electric system of new energy vehicles, the assembly and connection of the internal parts of the power electronic controller are very important for the control of production rhythm and cost.

[0003] Some structures of power electronic controllers in the prior art are as follows: Figure 1 As shown, it includes a printed circuit board 10, a board-end connector 20, a flexible circuit board guide seat 30, a flexible circuit board bracket 40, a flexible circuit board 50, and a power module 60. During assembly, the flexible circuit board 50 is laser welded to the power module 60, the flexible circuit board bracket 40 and the flexible circuit board guide seat 30 cooperate with each other to achieve the positioning and posture correction of the flexible circuit board 50, the flexible circuit board 50 is partially inserted into the card slot of the board-end connector 20, and then the board-end connector 20 is connected to the printed circuit board 10 to achieve the communication connection between the power module 60 and the printed circuit board 10. The power electronic controller of this structure utilizes the soft characteristics of the flexible circuit board 50, and can alleviate the relative displacement between the power module 60 and the printed circuit board 10 caused by vibration during the operation of the whole vehicle, thereby avoiding the problem of failure of the power electronic controller under vibration conditions. However, this power electronic controller also has at least the following defects:

[0004] (1) The flexible circuit board 50 is relatively soft and needs to be pre-bent and positioned multiple times during the assembly process. After being pre-bent and positioned, the flexible circuit board 50 is supported by the flexible circuit board bracket 40 and can only be partially inserted into the slot of the board end connector 20 under the guidance of the flexible circuit board guide seat 30. The flexible circuit board guide seat 30 needs to be manually positioned and installed on a support plate (not shown in the figure). The pre-bent positioning of the flexible circuit board 50 and the positioning and installation of the flexible circuit board guide seat 30 all lead to a longer production cycle, which is not conducive to improving production efficiency.

[0005] (2) The board-end connector 20 and the power module 60 are located on the same side of the printed circuit board 10. As the overall design of the power electronic controller is miniaturized, when the board-end connector 20 and the printed circuit board 10 are connected, it is impossible to visually determine whether the flexible circuit board 30 is effectively inserted into the slot of the board-end connector 20, and thus it is impossible to simply and quickly determine whether the power module 60 and the printed circuit board 10 are effectively connected.

[0006] (3) The price of the flexible circuit board 50 is relatively high, resulting in high production costs for the power electronic controller. Utility Model Content

[0007] The utility model aims to provide a connection device and a power electronic controller, aiming to improve the production cycle of the power electronic controller and reduce the production cost, and also conveniently judge whether the power module and the printed circuit board are effectively connected.

[0008] To achieve the above-mentioned purpose, the utility model provides a connection device, including a guide assembly and a pin; wherein:

[0009] The guide assembly comprises a first guide seat and a second guide seat arranged at intervals along a first direction;

[0010] The insertion pin includes a first segment, a second segment and a third segment which are sequentially connected along the direction from the first guide seat to the second guide seat; the second segment is arranged between the first guide seat and the second guide seat, and includes a first deformation segment with elasticity; one end of the first segment away from the second segment passes through the first guide seat and extends to the side of the first guide seat away from the first guide seat; one end of the third segment away from the second segment passes through the second guide seat and extends to the side of the second guide seat away from the first guide seat.

[0011] Optionally, the first segment, the second segment and the third segment are made of the same material, and the first deformation segment is a curved structure.

[0012] Optionally, a first positioning hole is provided on the first guide seat; the first segment includes a joining segment, and the joining segment is inserted into the first positioning hole;

[0013] An anti-slip structure is provided on the outer side surface of the engagement section, and an interaction force is generated between the anti-slip structure and the hole wall of the first positioning hole.

[0014] Optionally, a first limiting structure is provided on the first guide seat, and a second limiting structure is provided on the insertion pin, and the second limiting structure cooperates with the first limiting structure to constrain the length of the first segment located on the side of the first guide seat away from the second guide seat.

[0015] Optionally, the first positioning hole comprises a first hole segment, a second hole segment and a third hole segment which are connected in sequence; the first hole segment and the third hole segment extend along the first direction, and the third hole segment is closer to the second guide seat than the first hole segment; the second hole segment extends along the second direction, and the second direction intersects the first direction; the first limiting structure is formed on the hole wall of the first hole segment and / or the third hole segment;

[0016] The joining segment includes a first sub-segment, a second sub-segment and a third sub-segment connected in sequence; the first sub-segment and the third sub-segment extend along the first direction, and the third sub-segment is closer to the second guide seat than the first sub-segment; the second sub-segment extends along the second direction; the first sub-segment is penetrated into the first hole segment, the second sub-segment is penetrated into the second hole segment, and the third segment is penetrated into the third hole segment; the second limiting structure is provided on the first sub-segment and / or the third sub-segment.

[0017] Optionally, the first positioning hole comprises a first hole segment, a second hole segment and a third hole segment which are connected in sequence; the first hole segment and the third hole segment extend along the first direction, and the third hole segment is closer to the second guide seat than the first hole segment; the second hole segment extends along the second direction, and the second direction intersects the first direction; the first limiting structure is provided on the hole wall of the third hole segment;

[0018] The engaging section includes a first sub-segment, a second sub-segment and a third sub-segment connected in sequence; the first sub-segment and the third sub-segment extend along the first direction, and the third sub-segment is closer to the second guide seat than the first sub-segment; the second sub-segment extends along the second direction; the first sub-segment is inserted into the first hole segment, the second sub-segment is inserted into the second hole segment, and the third sub-segment is inserted into the third hole segment; the third sub-segment is provided with the second limiting structure;

[0019] The joining section further includes an elastic second deformation section, and the second deformation section is located on a side of the second limiting structure away from the second segment.

[0020] Optionally, the second deformation section is a curved structure.

[0021] Optionally, the second guide seat is provided with a second positioning hole extending through along the first direction, and the aperture of the second positioning hole decreases along the direction from the first guide seat to the second guide seat; the third segment is partially penetrated in the second positioning hole.

[0022] To achieve the above object, the utility model also provides a power electronic controller, comprising a power module, a printed circuit board, and the connection device as described above; the power module is located on the side of the first guide seat away from the second guide seat, the printed circuit board is located on the side of the second guide seat away from the first guide seat; the second guide seat is connected to the printed circuit board;

[0023] A portion of the first segment located on a side of the first guide seat away from the first guide seat is connected to the power module, a portion of the third segment located on a side of the second guide seat away from the first guide seat is connected to the printed circuit board, and an end of the third segment away from the second segment also extends to a side of the printed circuit board away from the second guide seat.

[0024] Optionally, the connecting device further comprises a welding piece, which is at least partially arranged on a side of the second guide seat facing away from the first guide seat; the welding piece is welded to the printed circuit board so that the second guide seat is connected to the printed circuit board.

[0025] Compared with the prior art, the connection device and power electronic controller of the utility model have the following advantages:

[0026] The aforementioned connection device includes a guide assembly and a pin; the guide assembly includes a first guide seat and a second guide seat arranged at intervals along a first direction; the pin includes a first segment, a second segment and a third segment connected in sequence along the direction from the first guide seat to the second guide seat; the second segment is arranged between the first guide seat and the second guide seat, and the second segment includes a first elastic deformation segment; the end of the first segment away from the second segment passes through the first guide seat and extends to the side of the first guide seat away from the second guide seat; the end of the third segment away from the second segment passes through the second guide seat and extends to the side of the second guide seat away from the first guide seat. The connection device is applied to a power electronic controller, which also includes a power module and a printed circuit board, the power module is connected to the portion of the third segment of the pin located on the side of the first guide seat away from the second guide seat, and the printed circuit board is connected to the portion of the first segment of the pin located on the side of the second guide seat away from the first guide seat. During the assembly process, the two connection positions of the pin are pre-positioned by the guide component, which is conducive to the rapid connection between the power module and the pin, and the rapid connection between the printed circuit board and the pin, thereby shortening the production cycle; the connecting device does not include a more expensive flexible circuit board, and the production cost is low; moreover, after the connecting device is connected to the printed circuit board, the pin partially protrudes from the printed circuit board, thereby, it can be determined by visual observation whether the pin is effectively connected to the printed circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to better understand the present invention and do not constitute an improper limitation on the present invention.

[0028] Figure 1 It is a partial structural schematic diagram of a power electronic controller in the prior art;

[0029] Figure 2 is a schematic structural diagram of a connecting device provided by the utility model according to an embodiment;

[0030] Figure 3 This is a schematic diagram of the structure of a pin of a connecting device provided by the utility model according to an embodiment;

[0031] Figure 4 is a schematic diagram of a connection device provided by the utility model according to an embodiment being applied to a power electronic controller;

[0032] Figure 5 is a partial cross-sectional view of a connecting device provided by the utility model according to an embodiment, showing the structure of the first positioning hole;

[0033] Figure 6 It is a partial cross-sectional view of a connecting device provided by the utility model according to an embodiment, and shows the structure of the second positioning hole.

[0034] [Description of reference numerals is as follows]:

[0035] 100-connecting device, 1000-guiding assembly, 1100-first guiding seat, 1110-first positioning hole, 1111-limiting step surface, 1112-first hole section, 1113-second hole section, 1114-third hole section, 1200-second guiding seat, 1210-second positioning hole, 2000-pin, 2100-first segment, 2110-first joint segment, 2111-external convex structure, 2112-first sub-segment, 21 13-second sub-segment, 2114-third sub-segment, 2115-anti-slip structure, 2120-second joining section, 2200-second section, 2300-third section, 2310-third joining section, 2320-fourth joining section, 3000-soldering piece, 60, 200-power module, 10, 300-printed circuit board, 20-board end connector, 30-flexible circuit board guide seat, 40-flexible circuit board bracket, 50-flexible circuit board. DETAILED DESCRIPTION

[0036] 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 illustrations provided in this embodiment only illustrate the basic concept of the present invention in a schematic manner, so the diagram only shows the components related to the present invention rather than drawing according to the number, shape and size of the components in the actual implementation. The type, quantity and proportion of each component in the actual implementation can be a random change, and the component layout type may also be more complicated.

[0037] In addition, each embodiment of the following description has one or more technical features, but this does not mean that the user of the present invention must implement all the technical features in any embodiment at the same time, or can only implement part or all of the technical features in different embodiments separately. In other words, under the premise of being possible to implement, those skilled in the art can selectively implement part or all of the technical features in any embodiment according to the disclosure of the present invention and according to the design specifications or implementation requirements, or selectively implement a combination of part or all of the technical features in multiple embodiments, thereby increasing the flexibility of the implementation of the present invention.

[0038] As used in this specification, the singular forms "one", "an", and "the" include plural objects, and the plural form "a plurality" includes more than two objects, unless the content clearly indicates otherwise. As used in this specification, the term "or" is generally used in a sense that includes "and / or", unless the content clearly indicates otherwise, and the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be directly connected or indirectly connected through an intermediate medium, and it can be a connection between two elements or an interactive relationship between two elements. Relational terms such as the terms "first", "second", etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations, nor do they indicate or imply relative importance or implicitly indicate the number of technical features indicated. It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] One of the purposes of the utility model is to provide a connection device, which can be applied to a power electronic controller, shorten the production cycle of the power electronic controller, and reduce the production cost of the power electronic controller.

[0040] A second object of the present utility model is to provide a power electronic controller using the aforementioned connection device.

[0041] In order to make the purpose, advantages and features of the utility model clearer, the utility model is further described in detail below in conjunction with the accompanying drawings. It should be noted that the drawings are all in a very simplified form and are not in precise proportions, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model. The same or similar reference numerals in the drawings represent the same or similar components.

[0042] Figure 2 FIG. 1 is a schematic diagram showing the structure of a connection device 100 provided in an embodiment of the present invention. Figure 2As shown, the connecting device 100 includes a guide assembly 1000 and a plug pin 2000. The guide assembly 1000 includes a first guide seat 1100 and a second guide seat 1200 arranged at intervals along a first direction. The structure of the plug pin 2000 is as shown in FIG. Figure 3 As shown, it includes a first segment 2100, a second segment 2200 and a third segment 2300 connected in sequence along the direction from the first guide seat 1100 to the second guide seat 1200. The second segment 2200 is arranged between the first guide seat 1100 and the second guide seat 1200, and the second segment 2200 includes a first deformation segment 2210 with elasticity. One end of the first segment 2100 away from the second segment 2200 passes through the first guide seat 1100 and extends to the side of the first guide seat 1100 away from the second guide seat 1200. One end of the third segment 2300 away from the second segment 2200 passes through the second guide seat 1200 and extends to the side of the second guide seat 1200 away from the first guide seat 1100.

[0043] For the convenience of description, the portion of the first segment 2100 that is inserted into the first guide seat 1100 is referred to as the first joining segment 2110, the portion of the first segment 2100 that is located on the side of the first guide seat 1100 away from the second guide seat 1200 is referred to as the second joining segment 2120, the portion of the third segment 2300 that is inserted into the second guide seat 1200 is referred to as the third joining segment 2310, and the portion of the third segment 2300 that is located on the side of the second guide seat 1200 away from the first guide seat 1100 is referred to as the fourth joining segment 2320.

[0044] The connection device 100 includes a plurality of the plug pins 2000. The specific number of the plug pins 2000 and the functional type of each of the plug pins 2000 may be the same as those in the prior art and will not be described in detail herein. Figure 4 As shown, the power electronic controller using the connection device 100 further includes a power module 200 and a printed circuit board 300. The printed circuit board 300 is arranged on the side of the second guide seat 1200 away from the first guide seat 1100 and connected to the second guide seat 1200. The power module 200 is arranged on the side of the first guide seat 1100 away from the second guide seat 1200. At the same time, each of the second joint sections 2120 is welded to the corresponding first connection point on the power module 200, each of the fourth joint sections 2320 is welded to the corresponding second connection point on the printed circuit board 300, and the fourth joint section 2320 also partially extends to the side of the printed circuit board 300 away from the second guide seat 1200.

[0045] Since the positions of the second joining section 2120 and the fourth joining section 2320 are pre-positioned by the guide assembly 1000, during the process of connecting the second joining section 2120 and the power module 200, and connecting the fourth joining section 2320 and the printed circuit board 300, the first connection point on the power module 200 can be quickly aligned with the second joining section 2120 of the corresponding plug pin 2000, and the second connection point on the printed circuit board 300 can be quickly aligned with the fourth joining section 2320 of the corresponding plug pin 2000, thereby shortening the operation time of the connection operation. Figure 1 As for the production method of the power electronic controller in the prior art shown, this connection device 100 does not include the flexible circuit board 50, so there is no need to perform multiple pre-bending operations on the flexible circuit board 50, and there is no need to manually position and install the flexible circuit board bracket 40 that supports the flexible circuit board 50, which can effectively shorten the production cycle of the power electronic controller. Moreover, not using the more expensive flexible circuit board 50 also reduces the production cost of the power electronic controller. After being connected to the printed circuit board 300, all of the fourth joining sections 2320 also partially extend to the side of the printed circuit board 300 away from the second guide seat 1200, so that the operator can take a photo with a camera, and then determine the connection status of each of the fourth joining sections 2320 based on the image, and judge whether each of the fourth joining sections 2320 is effectively connected to the printed circuit board 300.

[0046] Those skilled in the art know that the power electronic controller further includes a water cooling assembly (not shown in the figure), and the water cooling assembly is welded to the power module 200 by vapor phase reflow soldering. For the power electronic controller using the connection device 100, if the second joint section 2120 and the power module 200 are welded by vapor phase reflow soldering, the welding of the power module 200 and the water cooling assembly can be realized synchronously, without the need for Figure 1 As shown in the power electronic control, the connection between the power module 60, the flexible circuit board 50 and the water cooling component is realized in two steps (in the prior art, the power module 60 and the flexible circuit board 50 cannot be welded by vapor phase reflow soldering, and laser welding is generally used), further shortening the production cycle of the power electronic controller.

[0047] In the embodiment of the utility model, the first guide seat 1100 and the second guide seat 1200 are both plastic injection molded parts, and the plug pin 2000 is a stamped part. The total cost of the mold for obtaining the first guide seat 1100, the second guide seat 1200 and the plug pin 2000 is lower than the cost of the mold for obtaining the board-end connector 20, which can further reduce the production cost of the power electronic controller.

[0048] In addition, the flexible circuit board 50 in the prior art requires a certain pre-bending distance to complete the pre-bending operation during the assembly process, resulting in a larger height of the power electronic controller (i.e., the size of the power electronic controller in the arrangement direction of the power module 60 and the printed circuit board 10), while the pin 2000 in the embodiment of the utility model does not need to be pre-bent, which is beneficial to reducing the height of the power electronic controller and is beneficial to the miniaturization development needs of the power electronic controller.

[0049] It should be understood that during the operation of the automobile using the power electronic controller, the first deformation section 2210 can be deformed based on elastic characteristics, and alleviate the relative displacement between the power module 200 and the printed circuit board 300 caused by the vibration of the automobile, so as to avoid the failure of the power electronic controller under vibration conditions. Optionally, the entire plug pin 2000 is stamped and formed using the same material, and the material of the plug pin 2000 is relatively hard. The first deformation section 2210 is designed to be curved so that the first deformation section 2210 has a certain elasticity through the curved structure.

[0050] Optionally, the connecting device 100 is an assembled structure. Figure 5 As shown, the first guide seat 1100 is provided with a first positioning hole 1110 , and the second guide seat 1200 is provided with a second positioning hole 1210 . The first engaging section 2110 is inserted into the first positioning hole 1110 , and the third engaging section 2310 is inserted into the second positioning hole 1210 .

[0051] It should be understood that if the length of the second joint section 2120 is too small, the second joint section 2120 may be difficult to be effectively welded with the power module 200; if the length of the second joint section 2120 is too large, the length of the fourth joint section 2310 will be too small, which will cause the fourth joint section 2320 to be difficult to be effectively welded with the printed circuit board 300, or even if the fourth joint section 2320 is effectively welded with the printed circuit board 300, the fourth joint section 2320 cannot be partially extended to the side of the printed circuit board 300 away from the second guide seat 1200. In view of this, it is preferred that a first limiting structure (not marked in the figure) is provided on the first guide seat 1100, and a second limiting structure (not marked in the figure) is provided on the pin 2000, and the second limiting structure cooperates with the first limiting structure to constrain the length of the second joint section 2120.

[0052] In some optional implementations, please refer to Figure 5, the first positioning hole 1110 at least partially extends along the first direction, and a limiting step surface 1111 is formed on the hole wall of the portion of the first positioning hole 1110 extending along the first direction as the first limiting structure. The limiting step surface 1111 is arranged toward the second guide seat 1200. The first joining section 2110 also at least partially extends along the first direction, and an outer convex structure 2111 is provided on the outer side surface of the portion of the first joining section 2110 extending along the first direction as the second limiting structure. When the first joining section 2110 is inserted into the first positioning hole 1110, the outer convex structure 2111 abuts against the limiting step surface 1111.

[0053] In practice, all the first connection points on the power module 200 form a row, and all the second connection points on the printed circuit board 300 form two rows, which results in the first connection points and the second connection points connected to the same pin 2000 being staggered in a third direction, and the third direction is perpendicular to the first direction. In view of this, the first positioning hole 1110 includes a first hole segment 1112, a second hole segment 1113 and a third hole segment 1114 that are connected in sequence, the first hole segment 1112 and the third hole segment 1114 extend along the first direction, and the third hole segment 1114 is closer to the second guide seat 1200 than the first hole segment 1112. The second hole segment 1113 extends along a second direction, the second direction intersects with the first direction, and preferably the second direction is parallel to the third direction. In this way, when the connecting device 100, the power module 200 and the printed circuit board 300 are assembled, the first hole segment 1112 is aligned with the corresponding first connection point, and the third hole segment 1114 is aligned with the corresponding second connection point.

[0054] Accordingly, if Figure 3As shown, the first joint segment 2110 can be bent so that the first joint segment 2110 includes a first sub-segment 2112, a second sub-segment 2113 and a third sub-segment 2114 connected in sequence. The first sub-segment 2112 and the third sub-segment 2114 both extend along the first direction, and the first sub-segment 2112 is closer to the first guide seat 1100 than the third sub-segment 2114, and the second sub-segment 2113 extends along the second direction. The first sub-segment 2112 is inserted into the first hole segment 1112, the second sub-segment 2113 is inserted into the second hole segment 1113, and the third sub-segment 2114 is inserted into the third hole segment 1114. In this way, the first sub-segment 2113 corresponds to the first connection point, and the third sub-segment 2114 corresponds to the second connection point. Thus, the second joining segment 2120 is connected to an end of the first sub-segment 2112 away from the second sub-segment 2113 and can correspond to the corresponding first connection point.

[0055] It should be noted that, “the first hole segment 1112 and the third hole segment 1114 extend along the first direction” here means that the first hole segment 1112 has two opposite ends in the first direction, and the third hole segment 1114 has two opposite ends in the first direction, but does not mean that the first hole segment 1112 and the third hole segment 1114 must extend along a straight line. In practice, the first hole segment 1112 and the third hole segment 1114 may also extend at least partially along a curve. Similarly, "the second hole segment extends along the second direction" means that the second hole segment 1113 has two opposite ends in the second direction, and it can extend along a straight line or at least partially along a curve; "the first sub-segment 2112 and the third sub-segment 2114 extend along the first direction" means that the first sub-segment 2112 has two opposite ends in the first direction, and the third sub-segment 2114 has two opposite ends in the first direction, and the first sub-segment 2112 can extend along a straight line or at least partially along a curve, and the third sub-segment 2114 can extend along a straight line or at least partially along a curve; "the second sub-segment 2113 extends along the second direction" means that the second sub-segment 2113 has two opposite ends in the second direction, and the second sub-segment 2113 can extend along a straight line or at least partially along a curve.

[0056] Optionally, a limiting step surface 1111 is respectively provided on the hole wall of the first hole segment 1112 and the third hole segment 1113. An outer convex structure 2111 is respectively provided on the outer side surface of the first sub-segment 2112 and the third sub-segment 2114. The outer convex structure 2111 arranged on the first sub-segment 2112 abuts against the limiting step surface 1111 at the first hole segment 1112, and the outer convex structure 2111 arranged on the third sub-segment 2114 abuts against the limiting step surface 1111 at the third hole segment 1114.

[0057] In some alternative embodiments, the hole wall of the first hole segment is provided with the limiting step surface, while the hole wall of the third hole segment is not provided with the limiting step surface. Correspondingly, the outer side surface of the first sub-segment is provided with the convex structure, while the outer side surface of the third sub-segment is not provided with the convex structure (not shown in the figure).

[0058] In some other alternative embodiments, the limiting step surface is not provided on the hole wall of the first hole segment, while the limiting step surface is provided on the hole wall of the third hole segment. Correspondingly, the convex structure is not provided on the outer side surface of the first sub-segment, while the convex structure is provided on the outer side surface of the third sub-segment (not shown in the figure). In these embodiments, the joining section may further include a second deformation section with elasticity, and the second deformation section is located on the side of the second limiting structure away from the second section. The second deformation section can also alleviate the displacement between the power module 200 and the printed circuit board 300 caused by vehicle vibration during vehicle operation. It should be understood that when the entire pin is made of the same material and the hardness of the material making the pin is relatively high, the second deformation section is designed as a curved structure to utilize the curved structural characteristics to have a certain elasticity.

[0059] In other embodiments, the first limiting structure may also be a part of the outer surface of the first guide seat facing the second guide seat, and the second limiting structure is arranged on the second segment and located at the intersection of the second segment and the first segment (not shown in the figure).

[0060] Please refer back to Figure 3, an anti-slip structure 2115 is also provided on the outer side of the first engagement section 2110, and an interaction force is generated between the anti-slip structure 2115 and the hole wall of the first positioning hole 1110, so as to improve the positioning stability of the first engagement section 2110 in the first positioning hole 1110 and reduce the possibility of the first engagement section 2110 slipping out of the first positioning hole 1110. Here, the anti-slip structure 2115 is, for example, an anti-slip barb, and the anti-slip structure 2115 and the hole wall of the first positioning hole 1110 may be interference fit to generate mutual squeezing force, or the anti-slip structure 2115 may invade the hole wall of the first positioning hole 1110 to generate anchoring force.

[0061] The anti-slip structure 2115 can be disposed at any suitable position on the outer surface of the first joint segment 2110. For example, when the first sub-segment 2112 and the third sub-segment 2114 are both provided with the convex structure 2111, as shown in FIG. Figure 3 As shown, a plurality of anti-slip structures 2115 may be provided on the first sub-segment 2112, and a plurality of anti-slip structures 2115 may also be provided on the third sub-segment 2114. For the anti-slip structures 2115 and the convex structures 2111 provided on the first sub-segment 2112, all the anti-slip structures 2115 are located on the side of the convex structure 2111 away from the second sub-segment 2113; for the anti-slip structures 2115 and the convex structures 2111 provided on the third sub-segment 2114, all the anti-slip structures 2115 are located on the side of the convex structure 2111 close to the second sub-segment 2113. Alternatively, a plurality of anti-slip structures are provided only on the first sub-segment, and the anti-slip structures are located on a side of the outwardly protruding structure on the first sub-segment away from the second sub-segment (not shown in the figure); or a plurality of anti-slip structures are provided only on the third sub-segment, and the anti-slip structures are located on a side of the outwardly protruding structure on the third sub-segment close to the second sub-segment (not shown in the figure).

[0062] It should be understood that the plurality of anti-slip structures 2115 are arranged at intervals along the axial direction of the first engagement section 2110. Figure 3 In the illustrated situation, the plurality of convex structures 2115 on the first sub-segment 2112 are spaced apart along the axial direction of the first sub-segment 2112 , and the plurality of convex structures 2115 on the third sub-segment 2114 extend along the axial direction of the third sub-segment 2114 .

[0063] The second positioning hole 1210 disposed on the second guide seat 1200 may have a uniform inner diameter over the entire axial length thereof. Figure 6The second positioning hole 1210 is a tapered hole as shown, and the diameter of the second positioning hole 1210 gradually decreases from the first guide seat 1100 to the second guide seat 1200. The advantage of such a setting is that the hole wall of the second positioning hole 1210 is equivalent to a guide surface, which can guide the fourth engagement section 2320 of the pin 2000 to pass through the second positioning hole 1210 when the second positioning hole 1210 and the corresponding third hole section 1114 of the first positioning hole 1110 are not completely aligned, thereby reducing the difficulty of assembly.

[0064] It should be noted that, although the connection device 100 is described above by taking the example that the plug pin 2000 is assembled with the first guide seat 1100 through the first positioning hole 1110 and the plug pin 2000 is assembled with the second guide seat 1200 through the second positioning hole 1210, in practice, the plug pin 2000 can also be formed as an insert injection molded part (not shown in the figure) together with the first guide seat 1100. Specifically, after the production of the plug pin is completed, the first joint section is positioned in the injection mold of the first guide seat, and then the molten raw material is poured into the injection mold, and the mold is demolded after the raw material is solidified, so that the plug pin and the first guide seat connected as one can be obtained. It can be understood that in this form of the connection device, the plug pin does not need to be provided with the anti-slip structure, nor does it need to be provided with the second limiting structure, and the first positioning hole does not need to be reserved on the first guide seat, and the first limiting structure does not need to be provided.

[0065] Furthermore, if Figure 2 As shown, the connecting device 100 may further include a soldering piece 3000, which is at least partially disposed on a side of the second guide seat 1200 away from the first guide seat 1100. The soldering piece 3000 is soldered to the printed circuit board 300 to connect the second guide seat 1200 to the printed circuit board 300.

[0066] Optionally, one of the soldering piece 3000 and the second guide seat 1200 is provided with a joint groove (not shown in the figure), and the other includes a joint portion (not shown in the figure), the joint portion is inserted into the joint groove and has an interference fit with the joint groove. For example, the second guide seat 1200 is provided with the joint groove on the side away from the first guide seat 1100, and the soldering piece 3000 includes a substrate and a tin-plated layer (not shown in the figure), and the substrate includes a first sub-substrate and a second sub-substrate, the first sub-substrate and the second sub-substrate are connected at an angle and roughly form an L-shaped structure, wherein the first sub-substrate constitutes the joint portion to have an interference fit with the joint groove, and the second sub-substrate is provided with the tin-plated layer on the surface of the side away from the second guide seat 1200. In this way, the soldering piece 3000 can be connected to the printed circuit board 300 through a surface mount soldering process.

[0067] It should be understood that the second guide seat of the connecting device can also be connected to the welding piece in any other suitable manner, such as press-fitting.

[0068] Although the utility model is disclosed as above, it is not limited thereto. Those skilled in the art may make various modifications and variations to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalents, the utility model is also intended to include these modifications and variations.

Claims

1. A connection device, characterized in that: It includes a guide assembly and a pin; wherein, The guide assembly comprises a first guide seat and a second guide seat arranged at intervals along a first direction; The insertion pin includes a first segment, a second segment and a third segment which are sequentially connected along the direction from the first guide seat to the second guide seat; the second segment is arranged between the first guide seat and the second guide seat, and includes a first deformation segment with elasticity; one end of the first segment away from the second segment passes through the first guide seat and extends to the side of the first guide seat away from the first guide seat; one end of the third segment away from the second segment passes through the second guide seat and extends to the side of the second guide seat away from the first guide seat.

2. The connection device according to claim 1, characterized in that: The first segment, the second segment and the third segment are made of the same material, and the first deformation segment is a curved structure.

3. The connection device according to claim 2, characterized in that: The first guide seat is provided with a first positioning hole; the first segment includes a joining segment, and the joining segment is inserted into the first positioning hole; An anti-slip structure is provided on the outer side surface of the engagement section, and an interaction force is generated between the anti-slip structure and the hole wall of the first positioning hole.

4. The connection device according to claim 3, characterized in that: The first guide seat is provided with a first limiting structure, and the insertion pin is provided with a second limiting structure, and the second limiting structure cooperates with the first limiting structure to constrain the length of the first segment located on the side of the first guide seat away from the second guide seat.

5. The connection device according to claim 4, characterized in that: The first positioning hole comprises a first hole segment, a second hole segment and a third hole segment which are connected in sequence; the first hole segment and the third hole segment extend along the first direction, and the third hole segment is closer to the second guide seat than the first hole segment; the second hole segment extends along the second direction, and the second direction intersects the first direction; the first limiting structure is formed on the hole wall of the first hole segment and / or the third hole segment; The joining segment includes a first sub-segment, a second sub-segment and a third sub-segment connected in sequence; the first sub-segment and the third sub-segment extend along the first direction, and the third sub-segment is closer to the second guide seat than the first sub-segment; the second sub-segment extends along the second direction; the first sub-segment is penetrated into the first hole segment, the second sub-segment is penetrated into the second hole segment, and the third segment is penetrated into the third hole segment; the second limiting structure is provided on the first sub-segment and / or the third sub-segment.

6. The connection device according to claim 4, characterized in that: The first positioning hole comprises a first hole section, a second hole section and a third hole section which are connected in sequence; the first hole section and the third hole section extend along the first direction, and the third hole section is closer to the second guide seat than the first hole section; the second hole section extends along the second direction, and the second direction intersects the first direction; the first limiting structure is provided on the hole wall of the third hole section; The engaging section includes a first sub-segment, a second sub-segment and a third sub-segment connected in sequence; the first sub-segment and the third sub-segment extend along the first direction, and the third sub-segment is closer to the second guide seat than the first sub-segment; the second sub-segment extends along the second direction; the first sub-segment is inserted into the first hole segment, the second sub-segment is inserted into the second hole segment, and the third sub-segment is inserted into the third hole segment; the third sub-segment is provided with the second limiting structure; The joining section further includes an elastic second deformation section, and the second deformation section is located on a side of the second limiting structure away from the second segment.

7. The connection device according to claim 6, characterized in that: The second deformation section is a curved structure.

8. The connection device according to claim 1, characterized in that: The second guide seat is provided with a second positioning hole extending through along the first direction, and the aperture of the second positioning hole decreases along the direction from the first guide seat to the second guide seat; the third segment is partially penetrated in the second positioning hole.

9. A power electronic controller, characterized in that: The invention comprises a power module, a printed circuit board, and a connecting device as claimed in any one of claims 1 to 8; the power module is located on a side of the first guide seat away from the second guide seat, the printed circuit board is located on a side of the second guide seat away from the first guide seat; the second guide seat is connected to the printed circuit board; A portion of the first segment located on a side of the first guide seat away from the first guide seat is connected to the power module, a portion of the third segment located on a side of the second guide seat away from the first guide seat is connected to the printed circuit board, and an end of the third segment away from the second segment also extends to a side of the printed circuit board away from the second guide seat.

10. The power electronic controller according to claim 9, characterized in that: The connecting device further comprises a welding piece, which is at least partially arranged on a side of the second guide seat away from the first guide seat; the welding piece is welded to the printed circuit board so that the second guide seat is connected to the printed circuit board.

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