Vehicle-mounted chip capacitor

Abstract

The utility model discloses a vehicle-mounted chip capacitor, which comprises a capacitor body and a capacitor seat plate, the capacitor body comprises a capacitor cover plate and a leading-out terminal led out from the capacitor cover plate; the leading-out terminal comprises an extension part, a bending part and a welding part; the welding part is bent in multiple folds and comprises a first welding part and a second welding part; wherein the first welding part is bent in a U shape, and the opening direction of the U-shaped bend is the same as the extending direction of the extending part; the capacitor base plate comprises a base plate main body, and the base plate main body is provided with a terminal welding placing groove for placing the welding part; the terminal welding placing groove comprises a first segment placing groove and a second segment placing groove. And the first welding part and the second welding part are respectively placed in the first section placing groove and the second section placing groove. The vehicle-mounted chip capacitor provided by the utility model can be stably installed and fixed on the circuit board, so that shaking caused by vibration of a vehicle is avoided, and the vehicle-mounted chip capacitor can adapt to various complex application environments of jolting and vibration.

Description

Technical Field

[0001] This utility model belongs to the field of electronic device technology, and in particular relates to a vehicle-mounted chip capacitor. Background Technology

[0002] In power supplies, aluminum electrolytic capacitors have become indispensable due to their high capacitance, high voltage, and reasonable price. In recent years, the application of leaded aluminum electrolytic capacitors with high voltage, large capacitance, and large ripple current has gradually increased.

[0003] With the development of new energy vehicles, many surface mount capacitors have been applied to them. Given the complex usage scenarios and safety considerations of automobiles, the installation requirements for surface mount capacitors used in automobiles are relatively high. It is necessary to ensure that the surface mount capacitors can be stably installed and fixed, and will not shake due to the vibration of the vehicle during long-term use, so as to avoid poor contact or loosening of contacts caused by shaking, which could lead to circuit failure.

[0004] However, the surface mount capacitors currently used in new energy vehicles do not adequately consider the installation and fixing issues. They are simply soldered to the circuit board with the positive and negative terminals. During long-term use of the vehicle, the capacitor is prone to shaking due to the bumps and vibrations of the car. Over time, this shaking can eventually cause the positive and negative terminals to loosen or be damaged, thus affecting the lifespan of the capacitor product.

[0005] Therefore, it is necessary to conduct research and development on the existing technologies to provide a solution that allows capacitors to be stably and securely mounted on circuit boards to adapt to complex application environments with various bumps and vibrations.

[0006] The above background information is provided only to assist in understanding the utility model concept and technical solution of this utility model, and it does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above information was disclosed on the filing date of this patent application, the above background information should not be used to evaluate the novelty and inventiveness of this application. Utility Model Content

[0007] The purpose of this invention is to provide a vehicle-mounted patch capacitor to solve at least one of the problems mentioned in the background section.

[0008] To achieve the above objectives, the technical solution of this utility model embodiment is implemented as follows:

[0009] A vehicle-mounted surface mount capacitor includes a capacitor body and a capacitor base plate fitted onto the head of the capacitor body. The capacitor body includes a capacitor cover plate and lead-out terminals extending from the capacitor cover plate. The lead-out terminals include an extension, a bent portion extending from the end of the extension, and a welded portion extending from the end of the bent portion. The welded portion is multi-bent, including a first welded portion and a second welded portion bent perpendicular to the first welded portion. The first welded portion is U-shaped, and the opening of the U-shape faces the same direction as the extension of the extension. The capacitor base plate includes a base plate body, and a terminal welding placement groove is provided on the base plate body for placing the lead-out terminal welding portions. The terminal welding placement groove includes a first placement groove and a second placement groove. The first welded portion and the second welded portion are respectively placed in the first placement groove and the second placement groove.

[0010] In some embodiments, the plane containing the first welded portion is orthogonal to the plane containing the capacitor cover plate; the second welded portion is parallel to the surface of the capacitor cover plate.

[0011] In some embodiments, the surface of the first welded portion is flush with the bottom surface of the capacitor base plate; the surface of the second welded portion is flush with the outer surface of the capacitor base plate.

[0012] In some embodiments, the depth of the first placement slot is twice the depth of the second placement slot.

[0013] In some embodiments, the base plate body is further provided with a slot that mates with the extension of the lead-out terminal and a terminal guide groove that accommodates the bent portion of the lead-out terminal.

[0014] In some embodiments, the bent portion of the lead-out terminal is L-shaped and parallel to the surface of the capacitor cover plate.

[0015] In some embodiments, the depth and width of the terminal guide groove are equal and greater than or equal to the diameter of the lead-out terminal.

[0016] In some embodiments, the capacitor base plate is provided with a cavity for accommodating the head of the capacitor body, the cavity being configured such that its depth is greater than or equal to the thickness of the capacitor cover plate and less than half the length of the capacitor body.

[0017] In some embodiments, a plurality of support arms are vertically extended along the periphery of the inner surface of the seat plate body, and the inner sides of the plurality of support arms together form a cavity for accommodating the head of the capacitor body.

[0018] In some embodiments, the plurality of support arms includes a first support arm, a second support arm, a third support arm, and a fourth support arm; the slots are respectively provided between the second support arm and the first and third support arms.

[0019] The beneficial effects of this utility model's technical solution are:

[0020] Compared with existing technologies, the vehicle-mounted chip capacitor of this invention can be stably mounted and fixed on the circuit board, avoiding shaking due to vehicle vibration, so as to adapt to the complex application environment of various bumps and vibrations. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the present invention: a vehicle-mounted patch capacitor;

[0023] Figure 2 This is a three-dimensional schematic diagram of the capacitor body of an automotive patch capacitor according to an embodiment of the present invention;

[0024] Figure 3 This is a three-dimensional schematic diagram of the capacitor base plate of an automotive patch capacitor according to an embodiment of the present invention;

[0025] Figure 4 This is another angle schematic diagram of the capacitor base plate of an automotive patch capacitor according to one embodiment of the present invention;

[0026] Figure 5 This is another angle schematic diagram of the capacitor base plate of the vehicle-mounted patch capacitor according to an embodiment of the present invention;

[0027] Figure 6 This is a three-dimensional schematic diagram of the capacitor fixing plate of an automotive patch capacitor according to an embodiment of the present invention;

[0028] Figure 7 This is another perspective view of the capacitor fixing plate of the vehicle-mounted patch capacitor according to one embodiment of the present invention;

[0029] Figure 8 This is an exploded view of the capacitor fixing plate of a vehicle-mounted patch capacitor according to an embodiment of the present invention.

[0030] Figure 9 This is a partially exploded view of an embodiment of the vehicle-mounted patch capacitor of this utility model. Detailed Implementation

[0031] To make the technical problems, technical solutions, and beneficial effects of the embodiments of this utility model clearer and more understandable, and to enable those skilled in the art to better understand the solutions of this utility model, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of this utility model.

[0032] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as "connected to" another component, it can be directly connected to or indirectly connected to that other component. Furthermore, a connection can be for both fixing and circuit connection purposes.

[0033] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of 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. Therefore, they should not be construed as limitations on this utility model.

[0034] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this utility model, unless otherwise expressly specified and limited, "multiple" means two or more. Terms such as "installed," "connected," "joined," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; a mechanical connection or an electrical connection; a direct connection or an indirect connection through an intermediate medium; or a connection within two components or an interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0035] Reference Figures 1-6As shown in the figure, as an embodiment of the present invention, a vehicle-mounted chip capacitor is provided, including a capacitor body 100 and a capacitor base plate 200 sleeved on the head of the capacitor body 100; the capacitor body 100 includes an aluminum shell 1, a core package encapsulated in the aluminum shell, a capacitor cover plate 2 for encapsulating the core package in the aluminum shell, and lead-out terminals 21 extending from the capacitor cover plate 2; the lead-out terminals 21 include an extension portion 210 extending perpendicularly to the capacitor cover plate, a bent portion 211 bent at the end of the extension portion 210, and a welding portion 212 extending perpendicularly from the end of the bent portion 211; wherein, the welding portion 212 is multi-bent, including a first welding portion 2120 and a second welding portion 2121 bent perpendicularly to the first welding portion 2120; wherein, the first welding portion 2120... 20 is U-shaped; the capacitor base plate 200 includes a base plate body 10, on which a slot 101 is provided to cooperate with the extension 210 of the lead-out terminal, a terminal guide groove 102 to accommodate the bent portion 211 of the lead-out terminal, and a terminal welding placement groove 103 to place the welding portion 212 of the lead-out terminal; the terminal welding placement groove 103 includes a first placement groove 1031 and a second placement groove 1032; the depth of the first placement groove 1031 is twice the depth of the second placement groove 1032 or the width of the second placement groove 1032 is twice the width of the first placement groove 1031; the first welding portion 2120 and the second welding portion 2121 are respectively placed in the first placement groove 1031 and the second placement groove 1032.

[0036] In some embodiments, the capacitor further includes a capacitor mounting base 300 mounted at the tail of the capacitor body 100; the capacitor mounting base 300 is provided with a receiving space for accommodating the tail of the capacitor body.

[0037] The capacitor base plate 200 is provided with a cavity 20 for accommodating the head of the capacitor body 100. The cavity 20 is configured such that its depth is greater than or equal to the thickness of the capacitor cover plate 2, and less than half the length of the capacitor body 100. The inner diameter of the cavity 20 is equal to the outer diameter of the capacitor body 100, and the outer wall of the capacitor body 100 is in complete contact with the inner wall of the cavity 20.

[0038] Specifically, refer to Figures 3-5As shown, a plurality of support arms extend vertically along the periphery of the inner surface of the base plate body 10, and the inner sides of the plurality of support arms enclose the cavity 20 for accommodating the capacitor; a slot 101 is provided on the base plate body 10, penetrating the inner surface and the outer surface of the base plate body 10; a terminal guide groove 102 is provided on the outer surface of the base plate body 10; the bottom surface of the base plate body 10 is set as a flat plane for mounting and fixing the base plate 200 onto the circuit board, and a terminal welding placement groove 103 connected to the terminal guide groove 102 is provided on the bottom surface for placing the welding part 212 of the capacitor lead-out terminal 21.

[0039] Reference Figure 3 As shown, the inner sides of the plurality of support arms are configured with arc-shaped surfaces, and the inner sides of the plurality of support arms enclose a cylindrical cavity 20 to fit a circular capacitor. It should be noted that in some other embodiments, the inner sides of the plurality of support arms can also be configured with other shapes, such as being planar, with the inner sides of multiple support arms enclosing a square cavity to fit a square capacitor. In some embodiments, the outer side of each support arm is configured to be composed of multiple planes, with a reinforcing rib formed at the junction of every two planes, thus balancing the high strength of the base plate with its small volume.

[0040] Reference Figure 3 As shown, in one embodiment, the plurality of support arms includes a first support arm 104, a second support arm 105, a third support arm 106, and a fourth support arm 107; wherein the first support arm 104, the second support arm 105, and the third support arm 106 are located on one half of the seat plate body 10, while the fourth support arm 107 is located on the other half of the seat plate body 10; the second support arm 105 is provided with a slot 101 between it and the first support arm 104 and the third support arm 106. A notch 108 is provided between the first support arm 104 and the fourth support arm 107, and correspondingly, a notch 108 is also provided between the third support arm 106 and the fourth support arm 107; the notch 108 is higher than the inner surface of the seat plate body 10. By providing the notch and the large-scale slot, the exposed area of ​​the capacitor body is increased, which is beneficial to the heat dissipation of the capacitor body.

[0041] Reference Figure 4 , Figure 5 As shown, the slot 101 is symmetrically arranged with the center line of the outer surface of the base plate body 10 as the center, and the terminal guide groove 102 is connected to the slot 101; correspondingly, the terminal guide groove 102 is symmetrically arranged on both sides of the outer surface of the base plate body 10. In some embodiments, the width of the slot 102 is greater than or equal to the width of the terminal guide groove 102.

[0042] The terminal welding placement groove 103 includes a first placement groove 1031 and a second placement groove 1032. The first placement groove 1031 and the second placement groove 1032 form an L-shape on the bottom surface of the base plate body 10. The first placement groove 1031 and the second placement groove 1032 are respectively connected to the terminal guide groove 102. The connection between the first placement groove 1031, the second placement groove 1032 and the terminal guide groove 102 is set with an arc transition.

[0043] Reference Figure 3 , Figure 4 , Figure 5 As shown, on the outer surface of the base plate body 10, the direction parallel to the outer surface of the base plate body 10 is defined as the width direction, and the direction perpendicular to the outer surface of the base plate body 10 is defined as the depth direction. In some embodiments, the depth d of the terminal guide groove 102 is equal to its width w; the width w of the first placement groove 1031... ` The first placement groove 1031 has the same width w as the terminal guide groove 102, and a depth d. ` The depth d of the terminal guide groove 102 is twice the width direction. On the bottom surface of the base plate body 10, the direction parallel to the bottom surface of the base plate body 10 is defined as the width direction, and the direction perpendicular to the bottom surface of the base plate body 10 is defined as the depth direction. In some embodiments, the depth of the second placement groove 1032 is equal to the depth of the terminal guide groove 102. In some embodiments, the width of the second placement groove 1032 is equal to the width of the terminal guide groove 102. In some embodiments, the width of the second placement groove 1032 is twice the width of the terminal guide groove.

[0044] Reference Figure 1 , Figure 2 , Figure 6As shown, specifically, the lead-out terminal 21 includes an extension 210 extending perpendicularly to the capacitor cover plate 2, a bent portion 211 bent into an L-shape from the end of the extension 210, and a welding portion extending from the end of the bent portion 211 in the opposite direction to the extension direction of the extension 210. The welding portion is multi-bent, including a first welding portion 2120 parallel to the capacitor surface and a second welding portion 2121 parallel to the cover plate plane. The first welding portion 2120 is U-shaped, the second welding portion 2121 is bent perpendicularly to the first welding portion 2120, and the end of the second welding portion 2121 points away from the center of the base plate body 10. In some embodiments, the bent portion 211 bends along a direction away from the center of the capacitor cover plate 2; in some embodiments, the bent portion 211 is parallel to the surface of the capacitor cover plate 2. In some embodiments, a gap is provided on the first welding portion 2120 to facilitate sufficient contact between the solder and the welding portion 2121 during welding, improving the weld's strength. In some embodiments, the plane of the first welding portion 2120 is orthogonal to the plane of the capacitor cover plate 2, the U-shaped opening of the first welding portion 2120 faces the same direction as the extension direction of the extension portion 210, and the second welding portion 2121 extends away from the side of the capacitor base plate, with its surface flush with the outer surface of the capacitor base plate. In some embodiments, the plane of the bent portion 211 is perpendicular to the plane of the first welding portion 2120, and the surface of the first welding portion 2120 is flush with the bottom surface of the capacitor base plate. In some embodiments, the first welding portion 2120 has a gap, which facilitates full contact between the solder and the welding portion 212 during welding, improving the weld's strength.

[0045] Reference Figure 1 , Figure 2As shown, the lead-out terminal 21 passes through the slot 101 on the base plate body 10. The length of the extension 210 of the lead-out terminal 21 is less than the thickness of the base plate body 10. The inner surface of the base plate is in contact with the cover plate surface of the capacitor, thereby making the capacitor stably mounted and fixed on the base plate and preventing the capacitor from shaking. The bent portion 211 of the lead-out terminal 21 is placed in the terminal guide groove 102 on the outer surface of the base plate body 10, and the shape and size of the bent portion 211 are adapted to the guide groove. The first welding portion 2120 of the lead-out terminal 21 is placed in the first section of the terminal welding placement groove 1031; the second welding portion 2121 of the lead-out terminal 21 is placed in the second section of the terminal welding placement groove 1032. In some embodiments, the diameter of the bent portion 211 of the lead-out terminal 21 is adapted to the width of the terminal guide groove 102, so that the bent portion 211 is in seamless contact with the terminal guide groove 102 and is tightly held in the guide groove; in some embodiments, the surface of the bent portion 211 of the lead-out terminal 21 is flush with the outer surface of the base plate body 10.

[0046] It should be noted that, corresponding to the two slots 101 on the base plate body 10, the lead-out terminals include a positive lead-out terminal 21 and a negative lead-out terminal 22. The positive lead-out terminal and the negative lead-out terminal have the same structure and correspond to the two slots of the base plate body 10, respectively. In some embodiments, the distance between the two slots 101 is equal to the distance between the positive lead-out terminal 21 and the negative lead-out terminal 22.

[0047] Reference Figure 1 , Figure 2 As shown, when the capacitor body 100 is mounted on the surface mount capacitor base plate 200 of this invention, the positive and negative terminals 21 and 22 of the capacitor body 100 pass through the slot 101, are guided by the terminal guide groove 102, and then the soldering ends of the positive and negative terminals 21 and 22 are placed in the terminal soldering placement groove 103, and then soldered onto the circuit board. The bottom surface of the base plate body is tightly attached to the circuit board. In some embodiments, the width of the terminal guide groove 102 is set to match the diameter of the positive and negative terminals 21 and 22 of the capacitor, thereby ensuring that when the positive and negative terminals 21 and 22 of the capacitor are placed in the terminal guide groove, the positive and negative terminals 21 and 22 will not protrude above the bottom surface of the base plate body.

[0048] When the capacitor is mounted on the circuit board, the base plate is fixed to the circuit board, and the soldering part 212 in the terminal soldering placement groove 103 is soldered to the circuit board. The solder fills the terminal soldering placement groove 103, thereby mounting the capacitor on the circuit board firmly and securely. The soldering part 212 of the lead-out terminal 21 is designed with multiple bends, and the first soldering part 2120 parallel to the side of the capacitor is designed with a U-shaped bend, increasing the soldering area. After being soldered to the circuit board, the capacitor's longitudinal and lateral forces are greatly increased, ensuring stable mounting on the circuit board and improving the capacitor's shock resistance.

[0049] Reference Figure 4 , Figure 5 , Figure 6 As shown, the terminal welding placement groove 103 is configured to include a first placement groove 1031 and a second placement groove 1032, thereby accommodating various positive and negative terminal lead-out structures of the capacitor. The bottom surface of the base plate body 10 is a flat surface, ensuring a large contact area and stable and secure mounting when the base plate is attached to the circuit board. It should be noted that the base plate can be fixed to the circuit board by dispensing adhesive or other methods.

[0050] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 As shown, in some embodiments, the inner and outer surfaces of the base plate body 10 are parallel to each other. The inner surface of the base plate body 10 is configured to fit the shape of the cover plate of the capacitor body 100, thereby ensuring that the capacitor body 100 can make full contact with the base plate 200 when it is installed on the base plate, resulting in a more robust and secure installation. In some embodiments, the base plate body 10 is also provided with a positioning groove 109, which is configured to divide the capacitor base plate 200 into two halves. In some embodiments, the positioning groove 109 connects the second support arm 105, the outer surface of the base plate body, and the fourth support arm 107. When the capacitor is installed on the circuit board, the base plate is fixed to the circuit board, and the soldering part in the terminal soldering placement groove is soldered to the circuit board. The solder fills the terminal soldering placement groove, thereby installing the capacitor on the circuit board in a robust and secure manner. In addition, the soldering part of the lead-out terminal is parallel to the side of the capacitor. After being soldered to the circuit board, the forces in the longitudinal and lateral directions of the capacitor are greatly increased, thereby ensuring that the capacitor is stably installed on the circuit board and has strong vibration resistance. Furthermore, the base plate of this utility model, through such a design, can take into account both small size and high strength, and can stably fix the capacitor on the circuit board; in addition, by setting slots and notches between the support arms, and setting the cavity for accommodating the capacitor to ensure that the capacitor can be accommodated while maximizing the exposed surface area of ​​the capacitor, the heat dissipation performance of the capacitor is improved.

[0051] Reference Figure 6 , Figure 9 As shown, the end of the capacitor body 100 with the cover plate is defined as the head of the capacitor body 100, and the other end of the capacitor body is defined as the tail of the capacitor body 100; in some embodiments, a capacitor mounting base 300 is installed at the tail of the capacitor body 100.

[0052] Reference Figures 6-8 As shown, the capacitor mounting base 300 includes a base body 30, a plurality of support blocks perpendicular to the inner surface of the base body 30 at its periphery, and a welding piece 31 mounted on the base body 30; wherein, the inner sides of the plurality of support blocks together form a receiving space 301 for accommodating the tail of the capacitor body 100; the welding piece 31 is mounted on the bottom surface of the base body 30 for welding to a circuit board, thereby fixing the capacitor mounting base 300 to the circuit board, and thus stably mounting the capacitor body 100 on the circuit board.

[0053] Reference Figure 7 , Figure 8 , Figure 9 As shown, the base 30 has a mounting hole 302 at one end near the bottom surface of the base for mounting the welding piece 31; the mounting hole 302 penetrates the inner surface and outer surface of the base 30, and after the welding piece 31 is mounted in the mounting hole 302, one side of the welding piece 31 is exposed on the inner surface of the base 30; the tail of the capacitor body 100 is placed in the receiving space 301 of the capacitor fixing base 300, closely fitting the inner surface of the base 30 and contacting the welding piece 31.

[0054] Reference Figure 7 , Figure 8 As shown, the welding piece 31 includes a mounting portion 310 and a welding portion 311 bent perpendicular to the mounting portion 310. In some embodiments, the mounting portion 310 is mounted at the mounting hole 302 of the base, and a retaining piece 3101 is provided at the end of the mounting portion 310, which is held in place by the retaining piece 3101 on the inner surface of the base. The welding portion 311 is attached to the bottom surface of the base and protrudes from the bottom surface of the base. In some embodiments, the welding portion 311 is fixedly connected to the bottom surface of the base, thereby making the capacitor fixing plate more stable when mounted on the circuit board. In some embodiments, the base 30 is also provided with a slot 32 penetrating the inner surface and the outer surface of the base; the bottom surface of the base 30 is set as a flat plane for mounting and fixing the capacitor fixing plate on the circuit board.

[0055] Reference Figures 6-8As shown, in one embodiment, the plurality of support blocks includes a first support block 33, a second support block 34, a third support block 35, and a fourth support block 36; wherein the first support block 33, the second support block 34, and the third support block 35 are located on one half of the base, and the fourth support block 36 is located on the other half of the base; slots 32 are respectively provided between the second support block 34 and the first support block 33 and the third support block 35. A groove 37 is provided between the first support block 33 and the fourth support block 36, and correspondingly, a groove 37 is also provided between the third support block 35 and the fourth support block 36; the groove 37 is higher than the inner surface of the base. (Refer to...) Figure 7 As shown, in some embodiments, the inner side of the fourth support block 36 is L-shaped at the position corresponding to the mounting hole 302 of the base. With this design, the inner surface of the receiving space 301 for mounting the capacitor is not completely arc-shaped, thereby increasing the friction between the receiving space 301 and the capacitor surface and preventing the capacitor body 100 from rotating. In addition, by hollowing out, the material can be reduced and the weight of the capacitor fixing plate can be reduced.

[0056] Reference Figure 6 , Figure 8 As shown, there are two mounting holes 302, which are respectively located at the two corners of the fourth support block 36 near the bottom surface of the base; corresponding to the mounting holes 302, there are two welding pieces 31, which are respectively installed at the two mounting holes.

[0057] Reference Figures 6-8 As shown, the slots 32 are symmetrically arranged around the centerline of the outer surface of the base, and the outer surface of the base also has channels 38 communicating with the slots 32. When installing and fixing the capacitor, the base 30 mainly bears the weight on the half where the fourth support block 36 is located. Therefore, this design balances the structural strength and overall weight of the capacitor fixing plate. By setting slots and grooves, materials can be reduced and weight can be lightened without affecting the overall strength of the capacitor fixing plate. At the same time, the exposed area of ​​the capacitor can be increased, thereby improving the heat dissipation effect. In some embodiments, the base 30 is also provided with a groove 39, which is configured to divide the capacitor fixing plate into two halves. In some embodiments, the groove 39 connects the second support block 34, the outer surface of the base, and the fourth support block 36.

[0058] It is understood that the above description is a further detailed explanation of the present invention in conjunction with specific / preferred embodiments, and should not be construed as limiting the specific implementation of the present invention to these descriptions. For those skilled in the art, various substitutions or modifications can be made to these described embodiments without departing from the inventive concept, and all such substitutions or modifications should be considered within the scope of protection of this patent. In the description of this specification, the reference to terms such as "an embodiment," "some embodiments," "preferred embodiment," "example," "specific example," or "some examples," etc., indicates that the specific features, structures, materials, or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present invention.

[0059] In this specification, the illustrative expressions of the terms used do not necessarily refer to the same embodiments or examples. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, those skilled in the art can combine and integrate the different embodiments or examples described herein, as well as the features of different embodiments or examples, without contradiction. Although embodiments of the present invention and their advantages have been described in detail, it should be understood that various changes, substitutions, and modifications can be made herein without departing from the scope defined by the appended claims.

[0060] Furthermore, the scope of this invention is not intended to be limited to the specific embodiments of the processes, machines, manufactures, material compositions, means, methods, and steps described in the specification. Those skilled in the art will readily understand that existing or later-developed disclosures, processes, machines, manufactures, material compositions, means, methods, or steps that perform substantially the same function as the corresponding embodiments described herein or obtain substantially the same results as the embodiments described herein can be utilized. Therefore, the appended claims are intended to include such processes, machines, manufactures, material compositions, means, methods, or steps within their scope.

Claims

1. An on-vehicle patch capacitor characterized by: The capacitor body includes a capacitor cover plate and a lead terminal extending from the capacitor cover plate; the lead terminal includes an extension, a bent portion bent from the end of the extension, and a welding portion bent from the end of the bent portion; the welding portion is bent multiple times and includes a first welding portion and a second welding portion bent perpendicularly to the first welding portion; the first welding portion is U-shaped, and the opening of the U-shaped portion is in the same direction as the extension; the capacitor seat plate includes a seat plate body, and the seat plate body is provided with a terminal welding placement groove for placing the welding portion of the lead terminal; the terminal welding placement groove includes a first placement groove and a second placement groove; the first welding portion and the second welding portion are placed in the first placement groove and the second placement groove, respectively.

2. The on-board patch capacitor of claim 1, wherein: The plane of the first welding portion is orthogonal to the plane of the capacitor cover plate; the second welding portion is parallel to the surface of the capacitor cover plate.

3. The on-board patch capacitor of claim 1, wherein: The surface of the first welding portion is flush with the bottom surface of the capacitor seat plate; the surface of the second welding portion is flush with the outer surface of the capacitor seat plate.

4. The on-board patch capacitor of claim 1, wherein: The depth of the first placement groove is twice the depth of the second placement groove.

5. The on-board patch capacitor of claim 1, wherein: The seat plate body is further provided with a slot matched with the extension of the lead terminal and a terminal guide groove accommodating the bent portion of the lead terminal.

6. The on-board patch capacitor of claim 1, wherein: The bent portion of the lead terminal is L-shaped and parallel to the surface of the capacitor cover plate.

7. The vehicle-mounted patch capacitor of claim 5, wherein: The depth of the terminal guide groove is equal to the width, and is greater than or equal to the diameter of the lead terminal.

8. The vehicle-mounted patch capacitor of claim 7, wherein: The capacitor seat plate is provided with a cavity accommodating the head of the capacitor body, and the depth of the cavity is greater than or equal to the thickness of the capacitor cover plate and less than one-half of the length of the capacitor body.

9. The vehicle-mounted patch capacitor of claim 8, wherein: The inner surface of the seat plate body is vertically provided with a plurality of support arms, and the inner side of the plurality of support arms encloses the cavity accommodating the head of the capacitor body.

10. The vehicle-mounted patch capacitor of claim 9, wherein: The plurality of support arms include a first support arm, a second support arm, a third support arm, and a fourth support arm; the second support arm is provided with the slot between the first support arm and the third support arm, respectively.

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