Vehicle-mounted shockproof capacitor

Abstract

The invention discloses a vehicle-mounted shockproof capacitor which comprises a capacitor body and a fixing device used for installing and fixing the capacitor body. The capacitor body comprises an aluminum shell, a core bag, a cover plate and a leading-out terminal arranged on the cover plate; the fixing device comprises a fixing frame body, fixing hoops arranged at the two ends of the fixing frame body, a plurality of clamping elastic pieces arranged on the side face of the fixing frame body and a plurality of fixing pins arranged on one fixing hoop. Wherein the fixing hoops at the two ends of the fixing frame main body are respectively used for fastening the two ends of a capacitor body, and the inner surfaces of the fixing hoops are in contact with the surface of an aluminum shell of the capacitor body; and the clamping elastic sheets are used for clamping the surface of an aluminum shell of the capacitor body. According to the vehicle-mounted shockproof capacitor, the capacitor can be stably and firmly installed and fixed on the circuit board, shock absorption is carried out on the capacitor, shock absorption of the capacitor is achieved, and premature damage caused by resonance of the capacitor and a vehicle body is prevented.

Description

Technical Field

[0001] The invention belongs to the technical field of electronic devices, and in particular relates to a vehicle-mounted shockproof capacitor. Background Art

[0002] New energy vehicles generally use 450VDC-500VDC high-voltage aluminum electrolytic capacitors with a 105°C temperature and a lifespan of 3,000-5,000 hours, placing high demands on explosion-proof performance. Currently, aluminum electrolytic capacitors in new energy vehicles are primarily secured by clamping the upper and lower covers of the on-board charger (OBC) box. Over extended use, loosely secured aluminum electrolytic capacitors can resonate with the vehicle's bodywork, causing radial vibration shock to the capacitor core, posing a significant safety hazard. Long-term use can cause vibration creep at both ends of the isolating electrolytic paper, ultimately leading to short-circuit and explosion failure.

[0003] However, the aluminum electrolytic capacitors currently used in new energy vehicles have not taken into account the issues of explosion protection and shock absorption. Therefore, it is necessary to conduct research and development to provide a solution to solve the explosion protection and shock absorption problems of vehicle-mounted capacitors.

[0004] The disclosure of the above background technology content is only used to assist in understanding the inventive concept and technical solution of the present invention. It does not necessarily belong to the prior art of this patent application. In the absence of clear evidence that the above content has been disclosed on the filing date of this patent application, the above background technology should not be used to evaluate the novelty and creativity of this application. Summary of the Invention

[0005] An object of the present invention is to provide a vehicle-mounted shockproof capacitor to solve at least one of the above-mentioned background technical problems.

[0006] To achieve the above-mentioned purpose, the technical solution of the embodiment of the present invention is implemented as follows: A vehicle-mounted shockproof capacitor includes a capacitor body and a fixing device for installing and fixing the capacitor body; the capacitor body includes an aluminum shell, a core package encapsulated in the aluminum shell, a cover plate for encapsulating the core package in the aluminum shell, and a lead terminal arranged on the cover plate; the fixing device includes a fixing frame body, fixing clamps arranged at both ends of the fixing frame body, a plurality of clamping springs arranged on the side of the fixing frame body for clamping the capacitor body, and a plurality of fixing pins arranged on one of the fixing clamps for fixing the fixing device to a circuit board; wherein the fixing clamps at both ends of the fixing frame body are respectively used to fasten the two ends of the capacitor body, and the inner surface of the fixing clamp is in contact with the aluminum shell surface of the capacitor body; the clamping spring is used to clamp the aluminum shell surface of the capacitor body, and the end of the clamping spring is arranged into an arc-shaped piece, and the arc-shaped piece is in full contact with the surface of the capacitor body; the position of the aluminum shell surface contacted by the fixing clamp is at a certain distance from the position of the aluminum shell surface contacted by the clamping spring.

[0007] In some embodiments, the number of the clamping springs is an even number, and the even number of clamping springs are symmetrically arranged in pairs.

[0008] In some embodiments, the clamping clamp is roughly circular, and the inner diameter of the clamping clamp is adapted to the outer diameter of the capacitor body; after the capacitor body is accommodated in the capacitor accommodating space, the capacitor body is fixed by the clamping clamp and the clamping spring, and is installed and fixed on the circuit board through the fixing pin and the lead-out terminal of the capacitor body.

[0009] In some embodiments, the fixing frame body includes a first side surface, a second side surface, a third side surface, and a fourth side surface, and the first side surface, the second side surface, the third side surface, and the fourth side surface are enclosed together to form the capacitor accommodating space.

[0010] In some embodiments, a first window is provided on the first side surface, and a first clamping spring is provided at the first window.

[0011] In some embodiments, the first side surface is opposite to the third side surface, and the second side surface is opposite to the fourth side surface; a third window is provided on the third side surface, and a third clamping spring is provided at the third window; wherein an extension direction of the third clamping spring is the same as an extension direction of the first clamping spring.

[0012] In some embodiments, a curved edge is provided at the connection between every two adjacent side surfaces of the first side surface, the second side surface, the third side surface, and the fourth side surface, and the curved edge forms a curved groove on the inner wall of the receiving space.

[0013] In some embodiments, the first side surface, the second side surface, the third side surface, and the fourth side surface have the same thickness.

[0014] In some embodiments, the fixing clamp includes a circular body and an elastic portion protruding outward from the circular body; wherein a gap is provided between the circular body and the fixing frame body; and the fixing clamp is connected to the fixing frame body via the elastic portion.

[0015] In some embodiments, the circular body includes four arc-shaped spring pieces, which correspond to the first side, second side, third side, and fourth side of the fixed frame body respectively; the four arc-shaped spring pieces are on the same circle, and the elastic part is arranged between two adjacent arc-shaped spring pieces.

[0016] The beneficial effects of the technical solution of the present invention are: Compared with the existing technology, the vehicle-mounted shockproof capacitor of the present invention can stably and firmly install the capacitor on the circuit board, and reduce the vibration of the capacitor, thereby achieving shock absorption of the capacitor and preventing premature damage of the capacitor due to resonance with the vehicle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 1 is a perspective schematic diagram of a vehicle-mounted shockproof capacitor according to an embodiment of the present invention; Figure 2 This is a three-dimensional exploded schematic diagram of a vehicle-mounted shockproof capacitor according to an embodiment of the present invention; Figure 3 This is a schematic exploded perspective view of a vehicle-mounted shockproof capacitor according to an embodiment of the present invention from another angle; Figure 4 1 is a schematic diagram of a fixing device for a vehicle-mounted shockproof capacitor according to an embodiment of the present invention; Figure 5 1 is a perspective exploded schematic diagram of a vehicle-mounted shockproof capacitor according to another embodiment of the present invention; Figure 6 yes Figure 5 A schematic diagram of a fixing device for a vehicle-mounted shockproof capacitor according to an embodiment; Figure 7 is a schematic diagram of a fixing device for a vehicle-mounted shockproof capacitor according to another embodiment of the present invention; Figure 8FIG. 1 is a schematic diagram of a fixing device for a vehicle-mounted shockproof capacitor according to another embodiment of the present invention. DETAILED DESCRIPTION

[0019] In order to make the technical problems, technical solutions and beneficial effects to be solved by the embodiments of the present invention more clear and understandable, and to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention.

[0020] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, the term "connected" can be used for both fixing and circuit connection.

[0021] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, unless otherwise clearly specified and defined, the meaning of "multiple" is two or more, and the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated one; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0023] Reference Figure 1-Figure 4As shown, as an embodiment of the present invention, a vehicle-mounted shockproof capacitor 300 is provided, comprising a capacitor body 100 and a fixing device 200 for mounting and fixing the capacitor body; the capacitor body 100 comprises an aluminum shell 10, a core package encapsulated in the aluminum shell, a cover plate 11 for encapsulating the core package in the aluminum shell, and lead terminals 12 provided on the cover plate; the fixing device 200 comprises a fixing frame body 20, fixing clamps 30 provided at both ends of the fixing frame body 20, a plurality of clamping springs 21 provided on the side of the fixing frame body 20 for clamping the capacitor body, and a fixing clamp 30 provided on one of the fixing clamps 30. 0 is used to install and fix the fixing device 200 on a plurality of fixing pins 40 on the circuit board; wherein, the fixing clamps 30 at both ends of the fixing frame body 20 are respectively used to fasten the two ends of the capacitor body 100, and the inner surface of the fixing clamp 30 is in contact with the aluminum shell surface of the capacitor body 100; the clamping spring 21 is used to clamp the aluminum shell surface of the capacitor body 100, and the end of the clamping spring is set to be an arc-shaped piece, and the arc-shaped piece is in full contact with the surface of the capacitor body; the position of the aluminum shell surface contacted by the fixing clamp is at a certain distance from the position of the aluminum shell surface contacted by the clamping spring.

[0024] Reference Figure 1-Figure 4 As shown, the number of the clamping springs 21 is an even number, and the even number of clamping springs are symmetrically arranged in pairs, and two adjacent clamping springs among the even number of clamping springs are staggered to respectively clamp the aluminum shell surface of the capacitor body 100.

[0025] Specifically, the fixing frame body 20 is a square frame structure, and the fixing frame body 20 is provided with a capacitor receiving space to accommodate the capacitor body; the clamping clamp 30 is roughly circular, and the inner diameter of the fixing clamp 30 is adapted to the outer diameter of the capacitor body; after the capacitor body is accommodated in the capacitor receiving space, the capacitor body is fixed by the fixing clamp 30 and the clamping spring 21, and is installed and fixed on the circuit board through the fixing pin 40 and the lead terminal 12 of the capacitor body 100.

[0026] Reference Figure 2 As shown, the fixing frame body 20 includes a first side 201, a second side 202, a third side 203, and a fourth side 204. The first side 201, the second side 202, the third side 203, and the fourth side 204 together form a through capacitor receiving space for accommodating the capacitor body. The capacitor receiving space is generally in the form of a through square through hole, and the fixing clamps 30 are disposed at both ends of the square through hole.

[0027] Reference Figure 3As shown, the first side surface 201 is provided with a first window 2010, and a first clamping spring 2011 is provided at the first window 2010. In some embodiments, the first window 2010 extends longitudinally along the support body; the first clamping spring 2011 corresponds to the longitudinal extension of the first window 2010 along the support body. In some embodiments, one end of the first clamping spring 2011 is a fixed end, fixed to the edge of the first window 2010; the other end of the first clamping spring 2011 is a free end, used to elastically clamp the capacitor body. In some embodiments, the first window 2010 is a vertical rectangular opening, the length of the first clamping spring 2011 is equal to or less than the length of the rectangular opening; the width of the first clamping spring 2011 is less than or equal to the width of the rectangular opening; and the thickness of the first clamping spring 2011 is less than or equal to the thickness of the first side surface 201. The free end extends longitudinally upward along the first window 2010 and obliquely toward the capacitor receiving space. The free end and the fixed end are located in different planes, and the free end is arranged in an arc-shaped sheet shape that matches the surface of the capacitor body.

[0028] Reference Figure 2-Figure 3 As shown, the second side surface 202 is adjacent to the first side surface 201, and is provided with a second window 2020. A second clamping spring 2021 is provided at the second window 2020. The shape of the second window 2020 is the same as that of the first window 2010, and the extension direction of the second clamping spring 2021 is opposite to that of the first clamping spring 2011. The structure of the second clamping spring 2021 is the same as that of the first clamping spring 2011, and will not be repeated here.

[0029] The first side 201 is opposite the third side 203, and the second side 202 is opposite the fourth side 204. A third window (unnumbered) is provided on the third side 203, and a third clamping spring (unnumbered) is provided in the third window. A fourth window (unnumbered) is provided on the fourth side 204, and a fourth clamping spring (unnumbered) is provided in the fourth window. The third clamping spring extends in the same direction as the first clamping spring 2011, and the fourth clamping spring extends in the same direction as the second clamping spring 2021. This creates a staggered clamping arrangement, improving the balance and stability of the clamped capacitor body 100 and ensuring that the capacitor body 100 is stably mounted and secured to the fixture. The structures of the first clamping spring 2011, the second clamping spring 2021, the third clamping spring, and the fourth clamping spring are identical. For details, please refer to the description of the first clamping spring 2011, which will not be repeated here.

[0030] Reference Figure 4 As shown, in some embodiments, the free end of the first clamping spring 2011 and the free end of the third clamping spring, as well as the free end of the second clamping spring 2021 and the free end of the fourth clamping spring, enclose a circular clamping space; in some embodiments, the inner diameter of the circular clamping space is less than or equal to the outer diameter of the capacitor body. When the capacitor is placed in the capacitor receiving space, the free end of the first clamping spring 2011, the free end of the second clamping spring 2021, the free end of the third clamping spring and the free end of the fourth clamping spring tightly clamp the capacitor body, thereby firmly fixing the capacitor.

[0031] The first side surface 201, the second side surface 202, the third side surface 203, and the fourth side surface 204 are each provided with an arcuate ridge 22 at the junction of each two adjacent side surfaces. The arcuate ridge 22 forms an arcuate groove on the inner wall of the receiving space. This arrangement improves the shock absorption performance of the main body and stably places the capacitor body within the receiving space.

[0032] Reference Figure 2-Figure 4 As shown, in some embodiments, the first side 201, the second side 202, the third side 203, and the fourth side 204 have the same shape and are all rectangular. In some embodiments, the first side 201, the second side 202, the third side 203, and the fourth side 204 have the same thickness. In some embodiments, two opposing side surfaces (such as the first side 201 and the third side 203, the second side 202 and the fourth side 204) are arranged parallel to each other, and the distance between the two opposing side surfaces is equal to the outer diameter of the capacitor body placed in the receiving space. In some embodiments, the distance between the two opposing side surfaces is greater than the outer diameter of the capacitor body placed in the receiving space. By such an arrangement, the clamping of the capacitor body is made more balanced and more stable.

[0033] Reference Figure 3 、 Figure 4As shown, the fixing clamp 30 includes a circular body and an elastic portion 301 protruding outward from the circular body; a gap is formed between the circular body and the fixing frame body 20; the fixing clamp 30 is connected to the fixing frame body 20 via the elastic portion. In some embodiments, the circular body includes four arc-shaped spring pieces 302, which are arranged on the same circle, with the elastic portion disposed between adjacent arc-shaped spring pieces 302. In some embodiments, the four arc-shaped spring pieces 302 correspond to the first side 201, second side 202, third side 203, and fourth side 204 of the fixing frame body 20, respectively. In some embodiments, the four arc-shaped springs 302 have equal arc lengths and the same curvature. In some embodiments, the arc-shaped ribs 22 of the fixed frame body 20 extend and connect to the elastic portion of the fixing clamp 30. In some embodiments, the elastic portion 301 is roughly U-shaped, with the opening at the bottom of the U-shaped portion being equal in size to the notch of the arc-shaped groove formed by the arc-shaped ribs 22 on the inner wall of the receiving space, and the depth of the U-shaped portion being 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 the two ends of the capacitor body. By configuring the fixing clamp 30 in this manner, the two ends of the capacitor body can be well fixed, the capacitor body can be stably placed in the receiving space, and the overall tightening effect can be improved.

[0034] Reference Figure 1 、 Figure 4 As shown, there are at least two fixing pins 40, both of which are located on the same fixing clamp 30. The extension direction of the fixing pins 40 is perpendicular to the plane of the circular body of the fixing clamp 30, or the angle between the extension direction of the fixing pins 40 and the plane of the circular body of the fixing clamp 30 is greater than zero degrees. In some embodiments, the extension direction of the fixing pins 40 is the same as the extension direction of the lead terminals 12 of the capacitor body. In some embodiments, the two fixing pins 40 are arranged diagonally, and the line connecting the two fixing pins 40 intersects the line connecting the two lead terminals 12 of the capacitor. In this embodiment, there are four fixing pins 40, each of which is provided on the four elastic portions 302 of the fixing clamp 30. The four fixing pins 40 are connected in sequence to form a square. This pin arrangement allows the capacitor body 100 to be stably fixed to the external circuit board. Since all fixing pins 40 are located on the same fixing clamp 30, damage to a fixing pin 40 only affects one fixing clamp 30, without affecting both fixing clamps 30.

[0035] The invention fixes the two ends of the capacitor body 100 respectively by two fixing clamps 30, and strengthens the fixing of the capacitor by staggered clamping of the clamping springs 21, so that the capacitor body is stably and balancedly mounted on the fixing device. Moreover, the capacitor can be stably mounted and fixed on the circuit board through the fixing pins 40 on one of the fixing clamps 30 and the lead terminals on the capacitor body.

[0036] Reference Figure 5-Figure 6 As shown, as another embodiment, the fixed frame body 20 includes a first side plate 201, a second side plate 202, a third side plate 203, and a fourth side plate 204. The first side plate 201 and the third side plate 203 are provided with clamping springs, and the second side plate 202 and the fourth side plate 204 are sealed explosion-proof partitions. The first side plate 201, the second side plate 202, the third side plate 203, and the fourth side plate 204 are enclosed together to form a through capacitor receiving space to accommodate the capacitor body 100. The first side plate 201 is provided with a first window 2010, and the first window 2010 is provided with a first clamping spring 2011. The third side plate 203 is opposite to the first side plate 201, and the third side plate 203 is provided with a second window 2020, and the third window is provided with a second clamping spring 2021. The structure of the second clamping spring is the same as that of the first clamping spring.

[0037] The first clamping spring 2011 includes a spring body (not shown), a connecting end (not shown), and a clamping end (not shown), wherein the connecting end is fixedly connected to the edge of the first window, the clamping end is non-fixed, and the clamping spring is designed to be inclined from the connecting end to the clamping end, so that when the clamping end is displaced in the lateral direction of the support frame body 20, the clamping spring can generate an elastic force. In some embodiments, the clamping end and the spring body are located in different planes, and the clamping end is connected to the spring body by two arc-shaped inclined surfaces that are gradually retracted. In some embodiments, the clamping end is designed as a circular arc-shaped piece that matches the surface of the capacitor body. In some embodiments, the thickness of the clamping end is less than the thickness of the spring body. In this embodiment, two fixing clamps 30 are used to fix the two ends of the capacitor respectively, and the capacitor body is clamped and strengthened by the clamping spring, thereby firmly mounting the capacitor body on the fixing device. At the same time, by providing two explosion-proof partitions, splash damage to other components on the circuit board can be prevented when the capacitor explodes.

[0038] Reference Figure 7As shown, as another embodiment of the present invention, the support frame body 20 includes a first side surface 201, a second side surface 202, a third side surface 203, and a fourth side surface 204. The first side surface 201, the second side surface 202, the third side surface 203, and the fourth side surface 204 are enclosed together to form a through capacitor receiving space to accommodate the capacitor body. The first side surface 201 is provided with a first window 2010, and a first set of clamping springs 21 are provided at the first window 2010. In some embodiments, the first window 2010 extends longitudinally along the support frame body 20. The first set of clamping springs 21 includes an upper clamping spring 210 and a lower clamping spring 211, which extend from the upper and lower ends of the first window 2010 toward the center of the first window 2010, respectively. Specifically, one end of the upper clamping spring 210 is a fixed end, fixed to the upper edge of the first window 2010, and the other end is a free end, which is used to elastically clamp the capacitor body. The free end extends longitudinally downward along the first window 2010 and obliquely toward the capacitor receiving space. The lower clamping spring 211 has one end as a fixed end, fixed to the lower edge of the first window 2010, and the other end as a free end, which is used to elastically clamp the capacitor body. The fixed end and the free end are located in different planes. The free end extends longitudinally upward and obliquely toward the capacitor housing space along the first window 2010. A gap is provided between the free end of the upper clamping spring 210 and the free end of the lower clamping spring 211. In this embodiment, after multiple experiments, the size of the gap is 0.5 cm to 2.5 cm. This configuration ensures optimal cooperation between the upper clamping spring 210 and the lower clamping spring 211, resulting in the best clamping effect.

[0039] A second window (unnumbered) is provided on the second side surface 201, where a second set of clamping springs (unnumbered) is located. A third window (unnumbered) is provided on the third side surface 203, where a third set of clamping springs (unnumbered) is located. A fourth window (unnumbered) is provided on the fourth side surface 204, where a fourth set of clamping springs (unnumbered) is located. The structures of the second, third, and fourth sets of clamping springs are identical to those of the first set of clamping springs and are not further described herein. The free ends of the first group of clamping springs, the free ends of the second clamping springs, the free ends of the third clamping springs and the free ends of the fourth clamping springs enclose a circular clamping space; in some embodiments, the inner diameter of the circular clamping space is less than or equal to the outer diameter of the capacitor body. When the capacitor body is placed in the capacitor receiving space, the free ends of the first group of clamping springs, the free ends of the second group of clamping springs, the free ends of the third group of clamping springs and the free ends of the fourth group of clamping springs tightly clamp the middle section of the capacitor body, thereby firmly fixing the capacitor body.

[0040] Reference Figure 8 As shown in FIG. 1 , as another embodiment of the present invention, the support frame body 20 includes a first side surface 201, a second side surface 202, a third side surface 203, and a fourth side surface 204. The first side surface 201, the second side surface 202, the third side surface 203, and the fourth side surface 204 are enclosed together to form a through capacitor receiving space for accommodating the capacitor body 100. The capacitor receiving space is generally in the form of a through square through hole, and the fixing clamps 30 are disposed at both ends of the square through hole.

[0041] The first side surface 201 is provided with a first window 2010, and a first clamping spring 2011 is provided at the first window 2010. In some embodiments, the first window 2010 extends longitudinally along the support frame body. The first clamping spring 2011 corresponds to the longitudinal extension of the first window 2010 along the support frame body. The first clamping spring 2011 includes a spring body 110, a connecting end 111, and a clamping end 112. The connecting end 111 is fixedly connected to the edge of the first window 2010, the clamping end 112 is not fixed, and the clamping spring is designed to be inclined from the connecting end 111 to the clamping end 112, so that when the clamping end 112 is displaced in the lateral direction of the support frame body 20, the clamping spring can generate an elastic force. In some embodiments, the clamping end 112 and the spring body 110 are located in different planes, and the clamping end 112 is connected to the spring body 110 via two arc-shaped inclined surfaces that are gradually retracted. In some embodiments, the clamping end 112 is designed as an annular arc-shaped piece. In some embodiments, the thickness of the clamping end 112 is less than the thickness of the elastic sheet body 110.

[0042] A second window (unnumbered) is provided on the second side surface 202, and a second clamping spring (unnumbered) is provided at the second window. A third window (unnumbered) is provided on the third side surface 203, and a third clamping spring (unnumbered) is provided at the third window. A fourth window (unnumbered) is provided on the fourth side surface 204, and a fourth clamping spring (unnumbered) is provided at the fourth window. The structures of the second, third, and fourth clamping springs are identical to those of the first clamping spring, and are not further described herein. In some embodiments, the clamping ends of the first clamping spring, the second clamping spring, the third clamping spring, and the fourth clamping spring enclose a circular clamping space; in some embodiments, the inner diameter of the circular clamping space is less than or equal to the outer diameter of the capacitor body. When the capacitor is placed in the capacitor receiving space, the clamping ends of the first clamping spring, the second clamping spring, the third clamping spring, and the fourth clamping spring tightly clamp one end of the capacitor body, thereby firmly fixing the capacitor body. The clamping ends 112 of the first clamping spring, the second clamping spring, the third clamping spring, and the fourth clamping spring extend in the same direction, and the extension direction is the same as the extension direction of the fixing pin 30. In some embodiments, the clamping ends of the first clamping spring, the second clamping spring, the third clamping spring, and the fourth clamping spring have the same extension direction and extend in a direction away from the fixing pin 30 .

[0043] It is understandable that the above content is a further detailed description of the invention in combination with specific / preferred embodiments, and it cannot be determined that the specific implementation of the invention is limited to these descriptions. For ordinary technicians in the technical field to which the invention belongs, without departing from the concept of the invention, they can also make several substitutions or modifications to these described embodiments, and these substitutions or modifications should be deemed to fall within the scope of protection of this patent. In the description of this specification, the reference terms "one embodiment", "some embodiments", "preferred embodiments", "examples", "specific examples", or "some examples" are intended to mean that the specific features, structures, materials or characteristics described in combination with the embodiment or example are included in at least one embodiment or example of the invention.

[0044] In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples without contradiction. Although the embodiments and advantages of the present invention 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.

[0045] Furthermore, the scope of the present invention is not intended to be limited to the particular embodiments of the processes, machines, manufactures, compositions of matter, means, methods, and steps described in the specification. One of ordinary skill in the art will readily appreciate that any of the above-described disclosures, processes, machines, manufactures, compositions of matter, means, methods, or steps, currently existing or later developed, may be utilized to perform substantially the same functions or achieve substantially the same results as the corresponding embodiments described herein. Accordingly, the appended claims are intended to include within their scope such processes, machines, manufactures, compositions of matter, means, methods, or steps.

Claims

1. A vehicle-mounted shockproof capacitor, characterized by: It comprises a capacitor body and a fixing device for installing and fixing the capacitor body; the capacitor body comprises an aluminum shell, a core package encapsulated in the aluminum shell, a cover plate for encapsulating the core package in the aluminum shell, and a lead terminal arranged on the cover plate; the fixing device comprises a fixing frame body, fixing clamps arranged at both ends of the fixing frame body, a plurality of clamping springs arranged on the side of the fixing frame body for clamping the capacitor body, and a plurality of fixing pins arranged on one of the fixing clamps for fixing the fixing device on the circuit board; wherein, the fixing clamps at both ends of the fixing frame body are respectively used to fasten the two ends of the capacitor body, and the inner surface of the fixing clamp is in contact with the aluminum shell surface of the capacitor body; the clamping spring is used to clamp the aluminum shell surface of the capacitor body, and the end of the clamping spring is arranged into an arc-shaped piece, and the arc-shaped piece is in full contact with the surface of the capacitor body; the position of the aluminum shell surface contacted by the fixing clamp is at a certain distance from the position of the aluminum shell surface contacted by the clamping spring.

2. The vehicle-mounted shockproof capacitor according to claim 1, wherein: The number of the clamping springs is an even number, and the even number of clamping springs are symmetrically arranged in pairs.

3. The vehicle-mounted shockproof capacitor according to claim 2, wherein: The clamping clamp is roughly circular, and the inner diameter of the clamping clamp is adapted to the outer diameter of the capacitor body; after the capacitor body is accommodated in the capacitor accommodating space, the capacitor body is fixed by the clamping clamp and the clamping spring, and is installed and fixed on the circuit board through the fixing pin and the lead terminal of the capacitor body.

4. The vehicle-mounted shockproof capacitor according to claim 2, wherein: The fixing frame body includes a first side surface, a second side surface, a third side surface, and a fourth side surface. The first side surface, the second side surface, the third side surface, and the fourth side surface are surrounded together to form the capacitor accommodating space.

5. The vehicle-mounted shockproof capacitor according to claim 4, wherein: A first window is provided on the first side surface, and a first clamping elastic piece is provided at the first window.

6. The vehicle-mounted shockproof capacitor according to claim 5, wherein: The first side surface is opposite to the third side surface, and the second side surface is opposite to the fourth side surface; a third window is provided on the third side surface, and a third clamping spring is provided at the third window; wherein an extension direction of the third clamping spring is the same as an extension direction of the first clamping spring.

7. The vehicle-mounted shockproof capacitor according to claim 4, wherein: Among the first side surface, the second side surface, the third side surface, and the fourth side surface, a curved edge is provided at the connection between every two adjacent side surfaces, and the curved edge forms a curved groove on the inner wall of the receiving space.

8. The vehicle-mounted shockproof capacitor according to claim 4, wherein: The first side surface, the second side surface, the third side surface, and the fourth side surface have the same thickness.

9. The vehicle-mounted shockproof capacitor according to claim 1, wherein: The fixing clamp includes a circular body and an elastic portion protruding outward from the circular body; wherein a gap is provided between the circular body and the fixing frame body; and the fixing clamp is connected to the fixing frame body via the elastic portion.

10. The vehicle-mounted shockproof capacitor according to claim 9, wherein: The circular body includes four arc-shaped spring pieces, which respectively correspond to the first side, second side, third side and fourth side of the fixed frame body; the four arc-shaped spring pieces are on the same circle, and the elastic part is provided between two adjacent arc-shaped spring pieces.

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