A jig for precise assembly of an ev power module

Abstract

A kind of jig for the accurate assembly of EV power module, the mounting plate of elbow clamp, crossbeam, bakelite frame and base are fixed together;The connecting column of elbow clamp is fixed with pressing plate;The top of push-pull column is fixed in pressing plate;EV power module is composed of carrier plate, power plate and the shell below;The limiting block on movable base can define the position of shell placed above, there is a bull's eye wheel on the lower bottom surface, which can easily move the movable base and the shell above;Pull up or press down the handle of elbow clamp, the connecting column of elbow clamp drives the movement of pressing plate and push-pull column, at the same time cooperate with the movement of movable base, the small hole of carrier plate moves to the groove part of push-pull column, enters and is limited by it, then press down or pull up the handle of elbow clamp to complete the assembly or separation of carrier plate and shell of EV power module.The jig provided by the application can realize the accurate alignment of carrier plate and shell, the stress of carrier plate is uniform during being pressed down and pulled up, avoid some hidden troubles caused by improper operation, greatly improve the production efficiency.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of EV switching power supply production, in particular to a jig for precise assembly of an EV power module. BACKGROUND

[0002] In the production process of an EV switching power supply, the structure of an EV power module is relatively complex, and it is usually assembled by multiple components through plug-in (including a board end plug and a board end socket). The most common one is that a power module is first installed in a heat dissipation shell, and multiple board end sockets on a carrier plate are inserted into corresponding board end plugs on the bottom surface of a PCB plate to assemble them. The number of board end sockets is large and on the bottom surface, which is not easy to observe with the naked eye. Thus, it is difficult to assemble multiple board end sockets and board end plugs in position. After assembly and testing, the shell needs to be completed with production processes such as glue pouring, and the carrier plate and the shell need to be separated. For a power module with large size, heavy weight, and multiple plug-in components, it is very difficult to separate them by relying on human power. In the process of assembling and separating the carrier plate, the carrier plate is prone to uneven stress, causing mechanical stress damage to electronic components on the PCB. In addition, the EV power module is large in size and difficult to handle. The above problems will result in long production time, low efficiency, and high risk.

[0003] To solve the above problems, the present application provides a jig for precise assembly of an EV power module. SUMMARY

[0004] The technical problem to be solved by the present application is to provide a jig.

[0005] The technical solution adopted by the present application to solve the above technical problem is:

[0006] A jig for precise assembly of an EV power module, characterized in that it comprises two vertically opposite electric wood racks, a crossbeam, an elbow clamp, a pressing plate, not less than four push-pull columns, a movable base, a base, and an EV power module with a shell,

[0007] The two ends of the crossbeam are fixed to the top ends of the two electric wood racks by screws, the bottom of the electric wood rack is fixed to the base by screws, and the two sides of the pressing plate each have two vertical guide columns that penetrate the pressing plate and the base;

[0008] The PCBA board of the EV power module with a shell comprises a carrier plate and a power plate, the carrier plate has more than two board end sockets, the corresponding position of the power plate has a board end plug, the carrier plate and the power plate are assembled together by the board end socket and the board end plug, the carrier plate comprises not less than four raindrop-shaped through holes, the end with a large hole diameter is called a carrier plate large hole, and the end with a small hole diameter is called a carrier plate small hole;

[0009] The upper bottom surface of the movable base has a plurality of limiting blocks for limiting the position of the EV power module shell on the movable base, and the lower bottom surface has a bull's eye wheel at each corner for moving the EV power module shell;

[0010] The push-pull column is made of copper and is integrally formed, the top of the push-pull column has external threads for locking into the pressing plate, the middle of the push-pull column has a diameter greater than that of the large hole of the carrier plate, the groove part has a diameter equal to that of the small hole of the carrier plate, the height of the groove is equal to the thickness of the PCB of the carrier plate, and the diameter of the bottom of the push-pull column is between the diameters of the small hole and the large hole of the carrier plate, and the number and position of the push-pull columns correspond to the raindrop-shaped through holes on the carrier plate;

[0011] The fixing frame of the elbow clamp is fixed on the cross beam by four screws, the connecting column of the elbow clamp is fixed to the pressing plate by screws, and the handle for pulling up or pressing down the elbow clamp can control the stroke of the connecting column, thereby driving the push-pull column on the pressing plate to lift or press down the carrier plate;

[0012] When the movable base advances to a certain position below the jig, the handle for pressing down the elbow clamp is pressed, the push-pull column is lowered, the bottom of the push-pull column passes through the carrier plate from the large hole of the carrier plate, the movable base is continuously pushed, the EV power module with the shell is advanced, the small hole of the carrier plate moves into the groove part of the push-pull column and is limited by the groove part, and this position is used for lifting or pressing down the carrier plate.

[0013] Further, the back of the cross beam is provided with a U-shaped groove at the screw position of the elbow clamp fixing frame, the position of the screw can be finely adjusted, and the stroke of the pressing plate can be finely adjusted.

[0014] Further, a plurality of black EVA pressing plates are attached to the lower bottom surface of the pressing plate, the black EVA pressing plates correspond to the blank positions on the carrier plate, and the black EVA pressing plates play the roles of flattening and buffering.

[0015] Further, each corner of the base is provided with a foot pad, and each side of the front end of the base is provided with a reserved blocking strip for limiting the movable base.

[0016] The technical effects achieved by the present application relative to the existing structural design are as follows:

[0017] The jig provided by the present application can realize accurate alignment and assembly of the plug-in components on the carrier plate and the power plate, the carrier plate is uniformly stressed during being pressed down and lifted, hidden dangers caused by improper operation are avoided, the production efficiency is greatly improved, and the risk is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic diagram of the overall structure of the jig provided by the present application Figure 1 ;

[0019] Figure 2 is a schematic diagram of the overall structure of the jig provided by the present application Figure 2 ;

[0020] Figure 3 Is the back of the jig structure schematic view provided by the application;

[0021] Figure 4 Is the structure schematic diagram of the push-pull column;

[0022] Figure 5 Is the top of the carrier board PCB schematic diagram;

[0023] Figure 6 Is the overall structure of the jig with EV power module is placed in the three-dimensional schematic Figure 1 ;

[0024] Figure 7 Is the overall structure of the jig with EV power module is placed in the three-dimensional schematic Figure 2 . DETAILED DESCRIPTION

[0025] The preferred embodiments of the application are described below in conjunction with the drawings to explain the technical solutions of the application in detail.

[0026] In the following Figures 1 to 7 , a jig for precise assembly of EV power module, comprising two vertical opposite placed bakelite frame 10, beam 20, elbow clamp 30, pressing plate 40, not less than four push-pull column 42, movable base 60, base 50 and EV power module with shell, both ends of the beam are fixed on the top of the two bakelite frames by screws 21, the bottom of the bakelite frame is fixed with the base by screws, the two sides of the pressing plate are provided with two vertical guide columns 41 respectively, the guide columns penetrate the pressing plate and the base, the lower bottom surface of the pressing plate is adhered with a plurality of black EVA pressing plates 43 corresponding to the blank position on the carrier board, which plays a role of flattening and buffering, each corner of the base has a foot pad 51, and each plate edge of the base at the front end is provided with a reserved blocking strip 53 for limiting the movable base.

[0027] The EV power module with shell comprises a carrier board 70 and a power board 80, the power board is fixed in the shell 82, the carrier board has a plurality of board end sockets, the power board has a plurality of board end sockets, the carrier board and the power board are assembled together through the board end socket and the board end socket, the carrier board further comprises not less than four raindrop-shaped through holes 71, one end with large hole diameter is called carrier board large hole, and one end with small hole diameter is called carrier board small hole.

[0028] The upper bottom surface of the movable base 60 is provided with a plurality of limiting blocks 61 for limiting the position of the EV power module with shell on the movable base, and the lower bottom surface of the movable base is provided with a plurality of limiting blocks 61 for limiting the position of the EV power module with shell on the movable base.

[0029] The push-pull column 42 is made of copper material and is integrally formed. The top of the push-pull column is provided with external threads 42A for locking into the pressing plate. The middle part 42B of the push-pull column has a diameter larger than that of the large hole of the carrier plate. The groove part 42C has a diameter equal to that of the small hole of the carrier plate. The height of the groove is equal to the thickness of the PCB of the carrier plate. The bottom part 42D has a diameter between that of the small hole and the large hole of the carrier plate. The number and position of the push-pull columns correspond to the raindrop-shaped through holes on the carrier plate.

[0030] The fixing frame 31 of the elbow clamp 30 is fixed on the cross beam by four screws 32. The connecting column 33 of the elbow clamp is fixed to the pressing plate by screws. The handle 34 for pulling up or pressing down the elbow clamp can control the stroke of the connecting column, thereby driving the push-pull column on the pressing plate to be pulled up or pressed down. The back of the cross beam is provided with a U-shaped groove at the position of the screw for fixing the elbow clamp, so that the position of the screw can be finely adjusted, thereby finely adjusting the stroke of the pressing plate.

[0031] When the carrier plate is separated, the EV power module shell with the power plate is placed on the movable base. The movable base is pushed forward. When the tail edge 63 is flush with the base edge 52, the handle of the elbow clamp is pressed down. The pressing plate drives the push-pull column to move downward. The bottom part of the push-pull column passes through the carrier plate from the large hole of the carrier plate. The groove is flush with the PCB. The movable base is continuously pushed forward to the position of the front end stop of the base. At this time, because the diameter of the small hole of the carrier plate is equal to the diameter of the groove, the small hole of the carrier plate moves into the groove part and is limited (clamped) therein. The handle of the elbow clamp is pulled up to lift the pressing plate. The push-pull column drives the carrier plate to move upward as a whole. The carrier plate is separated. When the carrier plate needs to be assembled into the shell, the EV power module shell with the power plate is placed on the movable base. The movable base is pushed forward to the position of the front end stop 53 of the base. As shown in Figure 7 The push-pull column lifts the carrier plate directly above the power plate. At this time, the handle of the elbow clamp is pressed down. The multiple push-pull columns are pressed down simultaneously to realize precise and rapid assembly of the carrier plate and the power plate. It can be seen from the above process that the carrier plate and the power plate of the EV power module can not only be precisely and rapidly assembled and easily and rapidly separated, but also be uniformly stressed during being pulled up and pressed down.

[0032] Although the specific embodiments of the present application are described above, those skilled in the art should understand that these are only illustrative. Without departing from the principles and essence of the present application, various changes or modifications can be made to these embodiments. Therefore, the protection scope of the present application is defined by the appended claims.

Claims

1. A jig for precision assembly of an EV power module, characterized by, It comprises two vertical opposite Bakelite frame, beam, elbow clamp, pressing plate, no less than four push-pull column, movable base, base and EV power module with shell, The two ends of the beam are fixed on the top of the two Bakelite frames by screws, and the bottom of the Bakelite frame is fixed with the base by screws. The two sides of the pressing plate are provided with two vertical guide columns, which penetrate the pressing plate and the base. The back of the beam is provided with a U-shaped groove at the screw position of the elbow clamp fixing frame, which can fine-tune the position of the screw and further fine-tune the stroke of the pressing plate. A plurality of black EVA pressing plates are also adhered to the lower bottom surface of the pressing plate, which correspond to the blank positions on the carrier plate, and play the role of flattening and buffering. The EV power module with shell comprises a power board and a carrier plate. The power board is fixed in the shell, and the carrier plate is provided with more than two board end sockets. The power board is provided with a board end plug at the corresponding position. The carrier plate and the power board are assembled together by plugging the board end socket and the board end plug. The carrier plate comprises no less than four raindrop-shaped through holes. The larger one is called the carrier plate large hole, and the smaller one is called the carrier plate small hole. The upper bottom surface of the movable base is provided with a plurality of limiting blocks for limiting the position of the shell of the EV power module on the movable base. The lower bottom surface is provided with a bull's eye wheel at each corner for moving the EV power module with shell. The push-pull column is made of copper material and is integrally formed. The top is provided with external threads for locking into the pressing plate. The diameter of the middle part of the push-pull column is larger than the diameter of the carrier plate large hole. The diameter of the groove part is equal to the diameter of the carrier plate small hole. The height of the groove is equal to the thickness of the carrier plate PCB. The diameter of the bottom is between the diameters of the carrier plate small hole and the carrier plate large hole. The number and position of the push-pull column correspond to the raindrop-shaped through holes on the carrier plate. The fixing frame of the elbow clamp is fixed on the beam by four screws, and the connecting column is fixed with the pressing plate by screws. The handle of the elbow clamp can control the stroke of the connecting column, thereby driving the push-pull column on the pressing plate to lift or press the carrier plate. When the movable base advances to a certain position below the jig, the handle of the elbow clamp is pressed down, the push-pull column moves down, the bottom passes through the carrier plate from the carrier plate large hole, and the movable base is continuously pushed, the EV power module with shell advances, the carrier plate small hole moves into the groove part and is limited by it, and this position is used to lift or press the carrier plate.

2. The jig for precise assembly of EV power modules according to claim 1, wherein, The four corners of the base are provided with a foot pad, and the board edges on both sides of the front end of the base are provided with a blocking strip for limiting the movable base.

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