Vehicle-mounted explosion-proof aluminum electrolytic capacitor

Abstract

The utility model discloses a vehicle-mounted anti-explosion type aluminum electrolytic capacitor, including capacitor body and be used for installing and fixing capacitor body's fixing device, the fixing device includes capacitor fixed structure and anti -explosion baffle, wherein, capacitor fixed structure includes two fixed clamps, for the fastening capacitor body's both ends, and one fixed clamps on lead out has a plurality of fixed pins, for capacitor fixed on the circuit board, the anti -explosion baffle includes first side, second side, third side and fourth side, first side, second side, third side and fourth side are together, form a through receiving space, to accommodate capacitor body, the utility model discloses vehicle-mounted anti-explosion type aluminum electrolytic capacitor through effective restraint capacitor body, prevents capacitor internal explosion radiation impact, to protect other devices on the circuit board.

Description

Technical Field

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

[0002] New energy vehicles typically use 450VDC-500VDC high-voltage aluminum electrolytic capacitors with a lifespan of 105℃ and 3000-5000 hours, requiring high explosion-proof performance. Currently, aluminum electrolytic capacitors in new energy vehicles are mainly secured by the upper and lower covers of the onboard charger (OBC) box. During long-term use, improperly secured aluminum electrolytic capacitors are constantly in a state of resonance with the vehicle's movement. This causes radial vibration impact on the capacitor cells, posing a significant safety hazard. Prolonged use can lead to vibration creep at both ends of the capacitor's insulating electrolytic paper, eventually resulting in a short circuit and explosion failure.

[0003] However, the aluminum electrolytic capacitors currently used in new energy vehicles do not adequately address the issue of explosion-proof mounting. Therefore, it is necessary to conduct research and development to provide a solution to address the explosion-proof mounting problem of automotive aluminum electrolytic capacitors.

[0004] The above background information is provided only to aid in understanding the inventive concept and technical solution of this utility model. 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

[0005] The purpose of this invention is to provide a vehicle-mounted explosion-proof aluminum electrolytic capacitor to solve at least one of the problems mentioned in the background section.

[0006] To achieve the above objectives, the technical solution of this utility model embodiment is implemented as follows:

[0007] An explosion-proof aluminum electrolytic capacitor for vehicle mounting includes a capacitor body and a fixing device for mounting and fixing the capacitor body. The fixing device includes a capacitor fixing structure and an explosion-proof partition. The capacitor fixing structure includes two fixing clamps for fastening both ends of the capacitor body, and one of the fixing clamps has multiple fixing pins for fixing the capacitor to a circuit board. The explosion-proof partition includes a first side, a second side, a third side, and a fourth side, which together form a through-hole to accommodate the capacitor body.

[0008] In some embodiments, the receiving space is generally a square through hole, and two fixing clamps are respectively disposed at both ends of the square through hole.

[0009] In some embodiments, the fixing clamp is generally circular, and the inner diameter of the fixing clamp is adapted to the outer diameter of the capacitor body.

[0010] In some embodiments, an arc-shaped ridge is provided at the connection point of each pair of adjacent sides in the first side, second side, third side, and fourth side, and the arc-shaped ridge forms an arc-shaped groove on the inner wall of the receiving space.

[0011] In some embodiments, the first side, the second side, the third side, and the fourth side have the same shape, which is a rectangle.

[0012] In some embodiments, the fixing clamp includes a circular body and an elastic portion protruding outward from the circular body; wherein there is a gap between the circular body and the explosion-proof partition; the fixing clamp is connected to the explosion-proof partition through the elastic portion.

[0013] In some embodiments, the extension direction of the fixing pin is perpendicular to the radial direction of the fixing clamp.

[0014] In some embodiments, the circular body includes four arc-shaped spring pieces, which are on the same circle.

[0015] In some embodiments, there are at least two fixed pins, and both fixed pins are disposed on the same fixed clamp.

[0016] In some embodiments, the two fixed pins are arranged diagonally, and the connection between the two fixed pins intersects with the connection between the two leads of the capacitor.

[0017] The beneficial effects of this utility model's technical solution are:

[0018] Compared to existing technologies, this utility model of vehicle-mounted explosion-proof aluminum electrolytic capacitor can stably and firmly install and fix the capacitor on the circuit board, preventing the capacitor from resonating with the vehicle body and damaging the capacitor. It also effectively constrains the capacitor body to prevent the capacitor from exploding and radiating impact, thereby protecting other components on the circuit board. Attached Figure Description

[0019] 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.

[0020] Figure 1 This is a three-dimensional schematic diagram of an embodiment of the vehicle-mounted explosion-proof aluminum electrolytic capacitor of the present invention;

[0021] Figure 2 This is a three-dimensional schematic diagram of another embodiment of the vehicle-mounted explosion-proof aluminum electrolytic capacitor of the present invention;

[0022] Figure 3 This is an exploded view of an embodiment of the vehicle-mounted explosion-proof aluminum electrolytic capacitor of the present invention;

[0023] Figure 4 This is a three-dimensional schematic diagram of another embodiment of the vehicle-mounted explosion-proof aluminum electrolytic capacitor of the present invention. Detailed Implementation

[0024] 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.

[0025] 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.

[0026] 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.

[0027] 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.

[0028] Reference Figures 1-3 As shown in the figure, as an embodiment of the present invention, a vehicle-mounted explosion-proof aluminum electrolytic capacitor 100 is provided, including a capacitor body 10 and a fixing device 20 for mounting and fixing the capacitor body 10; the fixing device 20 includes a capacitor fixing structure and an explosion-proof partition; wherein, the capacitor fixing structure includes two fixing clamps 200 for fastening the two ends of the capacitor body 10, and one of the fixing clamps 200 has multiple fixing pins 201 for fixing the capacitor to a circuit board; the explosion-proof partition includes a first side 210, a second side 211, a third side 212, and a fourth side 213, the first side 210, the second side 211, the third side 212, and the fourth side 213 are gathered together to form a through receiving space to accommodate the capacitor body 10.

[0029] Reference Figure 3 , Figure 4 As shown, the receiving space is approximately a square through-hole, with two fixing clamps 200 respectively disposed at both ends of the square through-hole. The fixing clamps 200 are approximately circular, and their inner diameter is adapted to the outer diameter of the capacitor body 10; the extension direction of the fixing pin 201 is perpendicular to the radial direction of the fixing clamp 200; after the capacitor body 10 is accommodated in the capacitor receiving space, the two ends of the capacitor body 10 are fastened by the fixing clamps 200 to fix the capacitor body 10, and it is mounted and fixed to the circuit board by the fixing pin 201 at one end.

[0030] In the first side 210, the second side 211, the third side 212, and the fourth side 213, an arc-shaped ridge 214 is provided at the connection between every two adjacent sides, and the arc-shaped ridge 214 forms an arc-shaped groove 2140 on the inner wall of the receiving space. This arrangement can improve the shock absorption performance of the main body and at the same time, it can stably place the capacitor body 10 in the receiving space.

[0031] In some embodiments, the first side 210, the second side 211, the third side 212, and the fourth side 213 have the same shape, all being rectangular. In some embodiments, the first side 210, the second side 211, the third side 212, and the fourth side 213 have the same thickness. In some embodiments, two opposing sides (such as the first side 210 and the third side 212, the second side 211 and the fourth side 213) are arranged parallel to each other, and the distance between two opposing sides is equal to the outer diameter of the capacitor body 10 placed in the receiving space. In some embodiments, the distance between two opposing sides is greater than the outer diameter of the capacitor body 10 placed in the receiving space. The first side 210 and the third side 212, the second side 211 and the fourth side 213 of the explosion-proof partition surround the capacitor body 10 from all four sides, effectively constraining the capacitor body 10, preventing the capacitor from being imploded and radiated, and protecting other devices on the circuit board.

[0032] Reference Figures 2-4 As shown, the fixing clamp 200 includes a circular body and an elastic portion 202 protruding outward from the circular body; wherein, there is a gap between the circular body and the explosion-proof partition; the fixing clamp 200 is connected to the explosion-proof partition through the elastic portion 202. In some embodiments, the circular body includes four arc-shaped spring pieces 203, the four arc-shaped spring pieces 203 are on the same circle, and the elastic portion 202 is provided between adjacent arc-shaped spring pieces 203; in some embodiments, the four arc-shaped spring pieces 203 respectively correspond to the first side 210, the second side 211, the third side 212, and the fourth side 213 of the explosion-proof partition. In some embodiments, the four arc-shaped spring pieces 203 have equal arc lengths and the same curvature; in some embodiments, the arc-shaped ridge 214 of the explosion-proof partition extends to connect to the elastic portion 202 of the fixing clamp 200; in some embodiments, the elastic portion 202 is approximately U-shaped, the opening at the bottom of the U-shape is equal in size to the opening of the arc-shaped groove formed by the arc-shaped ridge 214 on the inner wall of the receiving space, and the depth of the U-shape is greater than the depth of the arc-shaped groove. In some embodiments, the inner diameter of the circular body is less than or equal to the outer diameter of both ends of the capacitor body 10. By setting the fixing clamp 200 structure in this way, the two ends of the capacitor body 10 can be well fixed, the capacitor body 10 can be stably placed in the receiving space, and the overall fastening effect can be improved.

[0033] Reference Figure 3 As shown, there are at least two fixed pins 201, both of which are disposed on the same fixing clamp 200. The extending direction of the fixed pin 201 is perpendicular to the plane of the circular body of the fixing clamp 200, or the angle between the extending direction of the fixed pin 201 and the plane of the circular body of the fixing clamp 200 is greater than zero degrees. In some embodiments, the extending direction of the fixed pin 201 is the same as the extending direction of the lead-out terminals of the capacitor body 10. In some embodiments, the two fixed pins 201 are arranged diagonally, and the line connecting the two fixed pins 201 intersects the line connecting the two lead-out terminals of the capacitor. In this embodiment, there are four fixed pins 201 in total. The four fixed pins 201 are respectively disposed on the four elastic portions 202 of the fixing clamp 200, and the four fixed pins 201 are connected in sequence to form a square. By setting the pins in this way, the capacitor body 10 can be stably fixed on the external circuit board, and all the fixing pins 201 are set on the same fixing clamp 200. When the fixing pin 201 is damaged, only one fixing clamp 200 will be affected, and it will not affect both fixing clamps 200.

[0034] 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.

[0035] 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.

[0036] 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. A vehicle-mounted explosion-proof aluminum electrolytic capacitor, characterized in that: The device includes a capacitor body and a fixing device for mounting and fixing the capacitor body; the fixing device includes a capacitor fixing structure and an explosion-proof partition; wherein, the capacitor fixing structure includes two fixing clamps for fastening both ends of the capacitor body, and one fixing clamp has multiple fixing pins for fixing the capacitor to a circuit board; the explosion-proof partition includes a first side, a second side, a third side, and a fourth side, which together form a through-hole to accommodate the capacitor body.

2. The vehicle-mounted explosion-proof aluminum electrolytic capacitor as described in claim 1, characterized in that: The receiving space is roughly a through square hole, with two fixing clamps respectively set at both ends of the square hole.

3. The vehicle-mounted explosion-proof aluminum electrolytic capacitor as described in claim 1, characterized in that: The fixing clamp is roughly circular, and its inner diameter is matched with the outer diameter of the capacitor body.

4. The vehicle-mounted explosion-proof aluminum electrolytic capacitor as described in claim 1, characterized in that: In the first side, the second side, the third side, and the fourth side, an arc-shaped ridge is provided at the connection between every two adjacent sides, and the arc-shaped ridge forms an arc-shaped groove on the inner wall of the receiving space.

5. The vehicle-mounted explosion-proof aluminum electrolytic capacitor as described in claim 1, characterized in that: The first, second, third, and fourth sides have the same shape, all being rectangles.

6. The vehicle-mounted explosion-proof aluminum electrolytic capacitor as described in claim 1, characterized in that: The fixing clamp includes a circular body and an elastic part protruding outward from the circular body; wherein, there is a gap between the circular body and the explosion-proof partition; the fixing clamp is connected to the explosion-proof partition through the elastic part.

7. The vehicle-mounted explosion-proof aluminum electrolytic capacitor as described in claim 3, characterized in that: The extension direction of the fixed pin is perpendicular to the radial direction of the fixed clamp.

8. The vehicle-mounted explosion-proof aluminum electrolytic capacitor as described in claim 6, characterized in that: The circular body includes four arc-shaped spring pieces, which are on the same circle.

9. The vehicle-mounted explosion-proof aluminum electrolytic capacitor as described in claim 7, characterized in that: There are at least two fixed pins, and both fixed pins are set on the same fixed clamp.

10. The vehicle-mounted explosion-proof aluminum electrolytic capacitor as described in claim 9, characterized in that: The two fixed pins are arranged diagonally, and the connection between the two fixed pins intersects with the connection between the two leads of the capacitor.

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