Automatic screw locking jig for new energy product radiator
By designing an automatic screw-locking fixture, the problem of poor assembly precision of the power module heat sink in charging piles was solved, achieving efficient and precise heat sink installation, which is suitable for heat sink assembly of new energy products.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHENZHEN ENERGY EFFICIENCY ELECTRIC TECH CO LTD
- Filing Date
- 2025-05-26
- Publication Date
- 2026-05-29
AI Technical Summary
The existing power module heat sinks for charging piles have poor assembly precision and low efficiency, making it difficult to meet the requirements of high power and standardized modularization.
An automatic screw-locking fixture for radiators of new energy products has been designed, including a positioning mother plate, a radiator positioning mold, a ceramic positioning mold, and a MOSFET positioning mold. Through multiple limiting structures and auxiliary installation mechanisms, it achieves precise installation and efficient assembly.
It improves the precision and efficiency of heat sink assembly, avoids component damage, and supports the rapid installation and removal of high-power charging pile modules.
Smart Images

Figure CN224295199U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of radiator processing technology, specifically to an automatic screw-locking fixture for radiators of new energy products. Background Technology
[0002] A charging station is a device that provides electrical energy to electric vehicles, enabling them to store enough electricity to support their operation. The charging station's power module, as its core component, is also developing towards higher power output and standardized modularity. To meet the growing market demand for fast charging, the power of charging modules is continuously increasing, with a trend towards higher module power density.
[0003] The charging pile module undertakes the core task of power conversion and is widely regarded as the "heart" of the charging pile. The power amplification devices on the charging pile power module generate a lot of heat and need to be installed on a heat sink to reduce the damage caused by the heat.
[0004] The screw-locking fixture for the power module heat sink of the charging pile is mainly composed of four parts. Multiple MOS power devices need to be locked on one heat sink. If manual processing is used, the efficiency is low, the consistency is poor, and the accuracy of assembling the power module heat sink of the charging pile is difficult to guarantee.
[0005] Now, a novel automatic screw-locking fixture for radiators of new energy products is proposed to solve the above problems. Utility Model Content
[0006] The purpose of this utility model is to provide an automatic screw-locking fixture for radiators of new energy products, so as to solve the problem of poor assembly accuracy mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution: an automatic screw-locking fixture for a radiator of a new energy product, comprising a positioning mother plate, a radiator positioning mold fixed at the front and rear of the top of the positioning mother plate, a ceramic positioning mold fixed on the upper surface of the radiator positioning mold, a MOS transistor positioning mold fixed on the upper surface of the ceramic positioning mold, and slots provided on the left and right sides of the rear of the MOS transistor positioning mold, grooves provided inside the ceramic positioning mold and the MOS transistor positioning mold, a radiator body fixedly inserted on the left and right sides of the interior of the radiator positioning mold, a ceramic sheet longitudinally inserted between the grooves, a screw hole three provided at the center of the left and right sides of the interior of the ceramic sheet, a screw hole one provided at the rear of the center of the ceramic sheet, and a bolt threaded into the screw hole one, and slots provided at the rear of the left and right sides of the ceramic sheet.
[0008] As a further technical solution of this utility model, the bolt is used to connect the ceramic plate and the radiator body, and the bolt is vertically connected between the ceramic plate and the radiator body.
[0009] As a further technical solution of this utility model, short rods are fixed on the left and right sides of the front end of the ceramic sheet, and two sets of sliding grooves are respectively provided at the front end of the groove.
[0010] As a further technical solution of this utility model, the short rod is embedded in the sliding groove, and the sliding groove restricts the movement of the short rod.
[0011] As a further technical solution of this utility model, four sets of insert rods are fixed on the left and right sides of the top of the positioning mother plate, and two sets of holes are respectively provided on the left and right sides of the interior of the heat sink positioning mold, the ceramic positioning mold and the MOS tube positioning mold. Four sets of screw holes are respectively provided on the front and rear ends of the interior of the positioning mother plate, and bolts are threaded into the screw holes. An arrow is fixed at the rear center of the top of the heat sink positioning mold, an arrow is fixed at the rear of the center of the top of the MOS tube positioning mold, and a mark is fixed at the front of the center of the top of the MOS tube positioning mold.
[0012] As a further technical solution of this utility model, the insertion rod is embedded between the holes, and the insertion rod and the holes are on the same vertical plane.
[0013] Compared with the prior art, the beneficial effects of this utility model are: the automatic screw-locking fixture for the radiator of a new energy product not only realizes multiple limiting parts to avoid damage to the parts, but also improves assembly efficiency;
[0014] (1) By inserting ceramic pieces vertically between the grooves, pinch the grooves on the left and right sides, place the ceramic pieces through the vertical grooves, screw the bolts into the screw holes to reinforce them, and use the screw holes on the left and right sides to install the MOS transistors. Pass the ceramic pieces through the MOS transistor positioning mold and the ceramic positioning mold, and install them on the heat sink surface inside the heat sink positioning mold. After they are moved to the automatic screw machine with the positioning motherboard for programming and fastening, they can be smoothly installed on the PCB board.
[0015] (2) By fixing short rods on the left and right sides of the front end of the ceramic plate, the two sets of short rods at the front end of the ceramic plate are respectively embedded in the groove. When placing the ceramic plate between the groove, the position of the short rods is restricted at the same time, which can prevent the short rods from shaking and causing the ceramic plate to move together. This provides assistance for the assembly of heat sink parts, avoids loss of installation accuracy, and helps to install the heat sink as a whole on the PCB board later.
[0016] (3) By fixing four sets of plug rods on the left and right sides of the top of the positioning mother plate, the heat sink positioning mold, ceramic positioning mold and MOS tube positioning mold are respectively fitted onto the outside of the plug rods of the positioning mother plate through the holes on the left and right sides. The heat sink positioning mold, ceramic positioning mold and MOS tube positioning mold are on the same vertical plane and are symmetrically installed at the front and back of the positioning mother plate. Aligning with arrow one, arrow two and the mark can help people quickly identify the corresponding module and realize the quick installation or disassembly of this one-to-two movable fixture. Attached Figure Description
[0017] Figure 1 This is a frontal cross-sectional view of the present invention.
[0018] Figure 2 This is a top view of the structure of this utility model;
[0019] Figure 3 For the present utility model Figure 1 A magnified view of the structure at point A in the middle;
[0020] Figure 4 This is a three-dimensional structural diagram of the present invention viewed from below.
[0021] In the diagram: 1. Positioning mother plate; 2. Heat sink positioning mold; 3. Ceramic positioning mold; 4. MOS tube positioning mold; 5. Heat sink body; 6. Bolt 1; 7. Screw hole 1; 8. Slot; 9. Mark; 10. Groove; 11. Slot opening; 12. Ceramic plate; 13. Arrow 1; 14. Screw hole 2; 15. Bolt 2; 16. Arrow 2; 17. Slide groove; 18. Short rod; 19. Insert rod; 20. Hole; 21. Screw hole 3. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0023] Please see Figure 1-4An embodiment of this utility model provides an automatic screw-locking fixture for a radiator of a new energy product, comprising a positioning mother plate 1, a radiator positioning mold 2 fixed at the front and rear of the top of the positioning mother plate 1, a ceramic positioning mold 3 fixed on the upper surface of the radiator positioning mold 2, a MOS tube positioning mold 4 fixed on the upper surface of the ceramic positioning mold 3, and slots 8 respectively provided on the left and right sides behind the MOS tube positioning mold 4, grooves 10 respectively provided inside the ceramic positioning mold 3 and the MOS tube positioning mold 4, a radiator body 5 fixedly inserted on the left and right sides inside the radiator positioning mold 2, a ceramic sheet 12 longitudinally inserted between the grooves 10, a screw hole 3 21 respectively provided at the center of the left and right sides inside the ceramic sheet 12, a screw hole 1 7 provided at the rear of the center of the ceramic sheet 12, and a bolt 1 6 threadedly connected in the screw hole 1 7, and slots 11 respectively provided at the rear of the left and right sides of the ceramic sheet 12.
[0024] Bolt 6 is used to connect the ceramic plate 12 and the radiator body 5. Bolt 6 is vertically connected between the ceramic plate 12 and the radiator body 5.
[0025] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, pinch the slots 11 on the left and right sides, place the ceramic sheet 12 through the vertical groove 10, and screw the bolt 6 into the screw hole 7 for reinforcement. The screw holes 21 on the left and right sides are used to install the MOS tube. Pass the ceramic sheet 12 through the MOS tube positioning mold 4 and the ceramic positioning mold 3, and install it on the heat sink surface inside the heat sink positioning mold 2 to achieve precise installation of the heat sink parts.
[0026] Short rods 18 are fixed on the left and right sides of the front end of the ceramic plate 12, and two sets of sliding grooves 17 are provided at the front end of the groove 10. The short rods 18 are embedded in the sliding grooves 17, and the sliding grooves 17 restrict the movement of the short rods 18.
[0027] Specifically, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the two sets of short rods 18 at the front end of the ceramic plate 12 are respectively embedded in the slide groove 17. When the ceramic plate 12 is placed between the groove 10, the position of the short rods 18 is restricted simultaneously, which can prevent the short rods 18 from shaking and causing the ceramic plate 12 to move together. This provides assistance for the assembly of radiator parts and avoids loss of installation accuracy.
[0028] Four sets of insert rods 19 are fixed on the left and right sides of the top of the positioning mother plate 1. Two sets of holes 20 are provided on the left and right sides of the interior of the heat sink positioning mold 2, ceramic positioning mold 3 and MOS tube positioning mold 4. Four sets of screw holes 14 are provided at the front and rear ends of the interior of the positioning mother plate 1, and bolts 15 are threaded into the screw holes 14. An arrow 13 is fixed at the rear center of the top of the heat sink positioning mold 2. An arrow 16 is fixed at the rear center of the top of the MOS tube positioning mold 4. A mark 9 is fixed at the front center of the top of the MOS tube positioning mold 4. The insert rods 19 are embedded between the holes 20. The insert rods 19 and the holes 20 are on the same vertical plane.
[0029] Specifically, such as Figure 1 , Figure 2 and Figure 4 As shown, the heat sink positioning mold 2, ceramic positioning mold 3, and MOS tube positioning mold 4 are respectively fitted onto the outside of the insertion rod 19 of the positioning mother plate 1 through the holes 20 on the left and right sides. The heat sink positioning mold 2, ceramic positioning mold 3, and MOS tube positioning mold 4 are on the same vertical plane and are symmetrically installed at the front and back of the positioning mother plate 1. Aligning with arrow 13, arrow 26, and mark 9 can help people quickly identify and install the corresponding modules.
[0030] Working principle: In use, the heat sink positioning mold 2, ceramic positioning mold 3, and MOS transistor positioning mold 4 are first fitted onto the outside of the insertion rod 19 of the positioning mother plate 1 through the holes 20 on the left and right sides respectively. The heat sink positioning mold 2, ceramic positioning mold 3, and MOS transistor positioning mold 4 are on the same vertical plane and symmetrically installed at the front and rear of the positioning mother plate 1. Aligning with arrows 13, 16 and 9 can help people quickly identify the corresponding modules. Then, pinch the slots 11 on the left and right sides, insert the ceramic sheet 12 through the vertical groove 10, and screw the bolt 6 into the screw hole 7. For reinforcement, the screw holes 21 on both sides are used to install MOSFETs. At this time, the two sets of short rods 18 at the front end of the ceramic plate 12 are respectively embedded in the slide groove 17. When the ceramic plate 12 is placed between the groove 10, the position of the short rods 18 is restricted simultaneously, which can prevent the short rods 18 from shaking and causing the ceramic plate 12 to move together, thus providing assistance for the assembly of heat sink parts. Finally, the ceramic plate 12 is passed through the MOSFET positioning mold 4 and the ceramic positioning mold 3 and installed on the heat sink surface inside the heat sink positioning mold 2. After it is moved to the automatic screw machine with the positioning mother plate 1 for programming and fastening, it can be smoothly installed on the PCB board.
[0031] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.
Claims
1. An automatic screw-locking fixture for a radiator of a new energy product, comprising a positioning mother plate (1), characterized in that: The front and rear of the top of the positioning mother plate (1) are respectively fixed with heat sink positioning mold (2), and the upper surface of the heat sink positioning mold (2) is fixed with ceramic positioning mold (3). The upper surface of the ceramic positioning mold (3) is fixed with MOS tube positioning mold (4), and the left and right sides of the rear of the MOS tube positioning mold (4) are respectively provided with slots (8). The interior of the ceramic positioning mold (3) and the MOS tube positioning mold (4) are respectively provided with grooves (10). The left and right sides of the interior of the heat sink positioning mold (2) are respectively fixed with heat sink body (5). The grooves (10) are longitudinally inserted between the grooves (10). The center of the left and right sides of the interior of the ceramic piece (12) is respectively provided with screw hole three (21). The rear of the center of the ceramic piece (12) is provided with screw hole one (7), and bolt one (6) is threaded in screw hole one (7). The rear of the left and right sides of the ceramic piece (12) is respectively provided with slots (11).
2. The automatic screw-locking fixture for a new energy product radiator according to claim 1, characterized in that: The bolt (6) is used to connect the ceramic plate (12) and the radiator body (5), and the bolt (6) is vertically connected between the ceramic plate (12) and the radiator body (5).
3. The automatic screw-locking fixture for a radiator of a new energy product according to claim 1, characterized in that: Short rods (18) are fixed on the left and right sides of the front end of the ceramic plate (12), and two sets of sliding grooves (17) are provided at the front end of the groove (10). The short rods (18) are embedded in the sliding grooves (17), and the sliding grooves (17) restrict the movement of the short rods (18).
4. The automatic screw-locking fixture for a new energy product radiator according to claim 1, characterized in that: Four sets of insert rods (19) are fixed on the left and right sides of the top of the positioning mother plate (1). Two sets of holes (20) are provided on the left and right sides of the interior of the heat sink positioning mold (2), ceramic positioning mold (3) and MOS tube positioning mold (4). Four sets of screw holes (14) are provided at the front and rear ends of the interior of the positioning mother plate (1), and bolts (15) are threaded into the screw holes (14). An arrow (13) is fixed at the center of the rear of the top of the heat sink positioning mold (2). An arrow (16) is fixed at the rear of the center of the top of the MOS tube positioning mold (4). A mark (9) is fixed at the front of the center of the top of the MOS tube positioning mold (4).
5. The automatic screw-locking fixture for a radiator of a new energy product according to claim 4, characterized in that: The insert (19) is embedded between the holes (20), and the insert (19) and the holes (20) are on the same vertical plane.