A connecting structure of a plug-in capacitor and an aluminum substrate

Abstract

The utility model relates to the technical field of controller, specifically speak a kind of connecting structure of plug-in capacitor and aluminium substrate. It includes aluminium substrate and capacitor body, and connecting piece is arranged between the capacitor body and aluminium substrate, the capacitor body is welded on the aluminium substrate, the connecting piece is provided with the through-hole corresponding with the capacitor angle of capacitor body, the capacitor angle passes through the corresponding through-hole, and the capacitor angle bending, is pressed on connecting piece in the capacitor angle of one end close to aluminium substrate, so that the outer wall surface of capacitor angle is in abutment with the lower end surface of connecting piece, the fixed connection of capacitor body and connecting piece, the section capacitor angle bending is welded with the aluminium substrate. Through the above technical scheme, the utility model solves the problem that the capacitor body is difficult to be welded on the aluminium substrate.

Description

Technical Field

[0001] This utility model relates to the field of controller technology, specifically a connection structure between a plug-in capacitor and an aluminum substrate. Background Technology

[0002] In electric vehicle control systems, the controller, as a core functional component, directly affects the safety and reliability of the entire vehicle's operation. With the iterative upgrades of power electronics technology and continuous innovation in manufacturing processes, using aluminum substrates as the circuit carrier for controllers has become a mature technical solution in the industry.

[0003] However, in actual assembly, the soldering connection between plug-in capacitors and the aluminum substrate faces significant challenges. Plug-in capacitors typically have capacitor corners for conduction and fixation, and these corners need to be stably soldered to the aluminum substrate to ensure circuit continuity and structural stability. However, in traditional reflow soldering processes, the presence of these capacitor corners significantly increases the difficulty of the soldering operation: on the one hand, the shape of the capacitor corners may make it difficult for solder to evenly cover the soldering surface, easily leading to problems such as cold solder joints and missing solder joints; on the other hand, the contact area between the capacitor corners and the aluminum substrate is limited and requires high positioning accuracy, so even a small deviation during soldering can affect the connection strength and conductivity. Therefore, a structural solution to the soldering problem of plug-in capacitors is urgently needed. Utility Model Content

[0004] In order to solve the problems in related technologies, this utility model provides a connection structure between a plug-in capacitor and an aluminum substrate. This device solves the problem of the difficulty in soldering the capacitor body onto the aluminum substrate.

[0005] To solve the above problems, the following technical solutions are provided:

[0006] The present invention discloses a connection structure between a plug-in capacitor and an aluminum substrate, comprising an aluminum substrate and a capacitor body, wherein a connector is provided between the capacitor body and the aluminum substrate, and the capacitor body is welded to the aluminum substrate.

[0007] In the above solution, the capacitor body and the connector are fixedly connected, and the initial assembly of the capacitor and the connector can be completed without direct welding, which facilitates positioning and adjustment during the production process. By adding a connector between the capacitor body and the aluminum substrate, the capacitor body is first inserted into the connector, and then the capacitor corner of the capacitor body is welded to the aluminum substrate, thus solving the problem of welding the capacitor body to the aluminum substrate in the prior art. The plug-in connection ensures the stable position of the capacitor body on the connector and avoids problems such as cold solder joints and missing solder joints caused by positional misalignment during welding.

[0008] The connector is provided with a through hole corresponding to the capacitance angle of the capacitor body, and the capacitance angle passes through the corresponding through hole.

[0009] In the above scheme, by setting the through hole, the outer diameter of the capacitor angle is slightly smaller than the inner diameter of the through hole, which makes it easier for the capacitor angle to be inserted into the through hole.

[0010] The capacitor corner located near the aluminum substrate is bent and pressed against the connector, so that the outer wall surface of the capacitor corner abuts against the lower end surface of the connector, and the capacitor body is fixedly connected to the connector.

[0011] In the above solution, by setting the capacitor angle, the capacitor angle passes through the through hole and then bends, so that the outer wall of the bent section at the bottom of the capacitor angle abuts against the lower end face of the connector. At this time, the capacitor angle is L-shaped, which fixes the capacitor body and the connector, significantly improving the fixing strength between the capacitor body and the connector and preventing displacement during welding or use. The connector also has a heat insulation effect, making the temperature distribution of the capacitor body more even and extending the service life of the capacitor body.

[0012] The bent section of the capacitor is welded to the aluminum substrate.

[0013] By adopting the above method, the capacitor corner is bent and then welded onto the aluminum substrate. The setting of the connecting plate makes the position of the bent capacitor corner accurate, thereby greatly improving the welding efficiency and welding strength.

[0014] Multiple capacitor bodies are provided, and each capacitor body is fixedly connected to the connector.

[0015] The above solution incorporates multiple capacitor bodies, each fitted with a through-hole on the connector via a capacitor angle, thus achieving a fixed connection between the capacitor body and the connector. Multiple capacitor bodies increase capacitance and allow for flexible expansion by adjusting the number of capacitor bodies according to the needs of controllers with different power levels.

[0016] The connectors on both sides of the bent capacitor corner are provided with U-shaped notches for the welding gun head to make way.

[0017] In the above solution, by setting a U-shaped notch, the welding torch tip is extended to the U-shaped notch during welding, which facilitates welding of the capacitor corner.

[0018] The above solution has the following advantages:

[0019] 1. The connection structure between the plug-in capacitor and the aluminum substrate of this utility model includes an aluminum substrate and a capacitor body, with a connector provided between the capacitor body and the aluminum substrate. The capacitor body is welded to the aluminum substrate. Through the connector and the capacitor body, the capacitor body and the connector are fixedly connected, allowing for initial assembly of the capacitor and connector without direct welding, facilitating positioning and adjustment during production. By adding a connector between the capacitor body and the aluminum substrate, the capacitor body is first plugged into the connector, and then the capacitor corners of the capacitor body are welded to the aluminum substrate, thus solving the problem of difficulty in welding the capacitor body to the aluminum substrate in the prior art. The plug-in connection ensures a stable position of the capacitor body on the connector, avoiding problems such as incomplete soldering or missed soldering caused by positional misalignment during welding.

[0020] 2. The connector has through holes corresponding to the capacitor angles of the capacitor body. The capacitor angles pass through these through holes. The outer diameter of the capacitor angle is slightly smaller than the inner diameter of the through hole, facilitating insertion. After passing through the through hole, the capacitor angle bends, causing the outer wall of the bent section at the bottom of the angle to abut against the lower end face of the connector. At this point, the capacitor angle forms an L-shape, fixing the capacitor body to the connector and significantly improving the fixing strength, preventing displacement during welding or use. The connector also provides heat insulation, resulting in a more even temperature distribution within the capacitor body and extending its lifespan. The capacitor angles are bent before being welded to the aluminum substrate. The connecting plate ensures precise positioning of the bent angles, greatly improving welding efficiency and strength. Attached Figure Description

[0021] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings, wherein:

[0022] Figure 1 This is a schematic diagram of the connection between the capacitor body and the connector in a connection structure between a plug-in capacitor and an aluminum substrate.

[0023] Figure 2 This is a schematic diagram of the capacitor body in a connection structure between a plug-in capacitor and an aluminum substrate.

[0024] Figure 3 This is a schematic diagram of the connector in a connection structure between a plug-in capacitor and an aluminum substrate.

[0025] Figure 4 This is a schematic diagram of the connection structure between a plug-in capacitor and an aluminum substrate, and the connection structure of the aluminum substrate.

[0026] Explanation of reference numerals in the attached drawings: 100, aluminum substrate; 200, capacitor body; 201, capacitor corner; 300, connector; 301, through hole; 302, U-shaped notch. Detailed Implementation

[0027] 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.

[0028] In specific embodiment 1, such as Figures 1-4 As shown, the connection structure between a plug-in capacitor and an aluminum substrate according to this utility model includes an aluminum substrate 100 and a capacitor body 200. A connector 300 is provided between the capacitor body 200 and the aluminum substrate 100, and the capacitor body 200 is soldered onto the aluminum substrate 100. Through the connection of the connector 300 and the capacitor body 200, the capacitor body 200 and the connector 300 are fixedly connected, allowing for preliminary assembly of the capacitor and the connector 300 without direct soldering, facilitating positioning and adjustment during production. By adding the connector 300 between the capacitor body 200 and the aluminum substrate 100, the capacitor body 200 is first plugged into the connector 300, and then the capacitor corner 201 of the capacitor body 200 is soldered onto the aluminum substrate 100, thus solving the problem of difficulty in soldering the capacitor body 200 onto the aluminum substrate 100 in the prior art. The plug-in connection ensures a stable position of the capacitor body 200 on the connector 300, avoiding problems such as incomplete soldering or missing soldering caused by positional misalignment during soldering.

[0029] like Figure 2 , 3As shown, the connector 300 is provided with a through hole 301 corresponding to the capacitor angle 201 of the capacitor body 200, and the capacitor angle 201 passes through the corresponding through hole 301. With the through hole 301, the outer diameter of the capacitor angle 201 is slightly smaller than the inner diameter of the through hole 301, facilitating the insertion of the capacitor angle 201 into the through hole 301. The capacitor angle 201 located near the aluminum substrate 100 is bent and pressed against the connector 300, so that the outer wall surface of the capacitor angle 201 abuts against the lower end surface of the connector 300, thus fixing the capacitor body 200 to the connector 300. With the capacitor angle 201, after passing through the through hole 301, it bends, so that the outer wall of the bent section at the bottom of the capacitor angle 201 abuts against the lower end surface of the connector 300. At this time, the capacitor angle 201 is L-shaped, which fixes the capacitor body 200 to the connector 300, significantly improving the fixing strength between the capacitor body 200 and the connector 300, and preventing displacement during welding or use. The connector 300 provides heat insulation, making the temperature distribution of the capacitor body 200 more even and extending the service life of the capacitor body 200. The bent capacitor angle 201 is welded to the aluminum substrate 100. After bending the capacitor angle 201, it is then welded to the aluminum substrate 100. Through the setting of the connecting plate 300, the position of the bent capacitor angle 201 is accurate, thereby greatly improving the welding efficiency and welding strength.

[0030] After the capacitor corner 201 is inserted into the through hole 301, there is a slight gap between the outer periphery of the capacitor corner 201 and the outer periphery of the through hole 301. When the connector 300 is welded to the aluminum substrate 100, the solder can fully fill the gap between the through hole 301 and the capacitor corner 201, enhance the welding strength, and improve the conductivity reliability.

[0031] In a specific embodiment 2, such as Figure 4 As shown, the difference between this embodiment and Embodiment 1 is that multiple capacitor bodies 200 are provided in this embodiment, and all multiple capacitor bodies 200 are fixedly connected to the connector 300. The fixed connection of multiple capacitor bodies 200 to the connector 300 increases the capacitance and facilitates adjustment of the number of capacitor bodies 200 according to the needs of controllers with different power levels, enabling flexible expansion.

[0032] like Figure 3 As shown, the connectors 300 on both sides of the bent capacitor angle 201 are provided with U-shaped notches 302 for the welding gun tip to make way. With the U-shaped notches 302 provided, during welding, the welding gun tip can be extended to the U-shaped notches 302, which facilitates welding of the capacitor angle 201.

[0033] During operation, select an appropriate number of capacitor bodies 200 according to the actual situation. First, insert the capacitor corner 201 of the capacitor body 200 into the corresponding through hole 301 of the connector 300. Bend the section of capacitor corner 201 located below the connector 300 so that the outer wall surface of capacitor corner 201 abuts against the lower end surface of connector 300. Install the capacitor body 200 with connector 300 on the aluminum substrate 100. Then, extend the welding gun tip to the U-shaped notch 302 and weld to fix the capacitor corner 201 of capacitor body 200 to aluminum substrate 100.

[0034] In the description of this utility model, it should be understood that the terms "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise specified and limited, it should be noted that the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to mechanical or electrical connections, or internal connections between two components, and can be direct connections or indirect connections through an intermediate medium. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0035] Obviously, the above embodiments are merely examples for clear illustration and are not intended to limit the implementation. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all implementation methods here, and any obvious variations or modifications derived therefrom are still within the protection scope of this utility model.

Claims

1. A connection structure between a plug-in capacitor and an aluminum substrate, comprising an aluminum substrate (100) and a capacitor body (200), characterized in that, A connector (300) is provided between the capacitor body (200) and the aluminum substrate (100), and the capacitor body (200) is welded to the aluminum substrate (100).

2. The connection structure between a plug-in capacitor and an aluminum substrate as described in claim 1, characterized in that, The connector (300) is provided with a through hole (301) corresponding to the capacitor angle (201) of the capacitor body (200), and the capacitor angle (201) passes through the corresponding through hole (301).

3. The connection structure between a plug-in capacitor and an aluminum substrate as described in claim 2, characterized in that, The capacitor corner (201) located near the aluminum substrate (100) is bent and pressed onto the connector (300), so that the outer wall surface of the capacitor corner (201) abuts against the lower end surface of the connector (300), and the capacitor body (200) is fixedly connected to the connector (300).

4. The connection structure between a plug-in capacitor and an aluminum substrate as described in claim 3, characterized in that, The bent capacitor angle (201) is welded to the aluminum substrate (100).

5. The connection structure between a plug-in capacitor and an aluminum substrate as described in claim 1, characterized in that, Multiple capacitor bodies (200) are provided, and each capacitor body (200) is fixedly connected to the connector (300).

6. The connection structure between a plug-in capacitor and an aluminum substrate as described in claim 5, characterized in that, The connectors (300) on both sides of the bent capacitor angle (201) are provided with U-shaped notches (302) for the welding gun head to make way.

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