CN220653006U

CN220653006U - Capacitor emergency starting power supply

Info

Publication number: CN220653006U
Application number: CN202322032234.1U
Authority: CN
Inventors: 胡志勇; 周飞; 陈维
Original assignee: Shenzhen Baseus Technology Co Ltd
Current assignee: Shenzhen Baseus Technology Co Ltd
Priority date: 2023-07-28
Filing date: 2023-07-28
Publication date: 2024-03-22
Anticipated expiration: 2033-07-28

Abstract

The utility model provides a capacitor emergency starting power supply. The capacitor emergency starting power supply comprises a shell, a capacitor assembly and a cover body; a containing cavity is formed in the shell; one end of the shell is provided with a groove, the bottom wall of the groove is provided with a through hole, and the through hole is used for the wiring insertion of the storage battery; the capacitor component is arranged in the accommodating cavity; the wiring port of the capacitor component is exposed in the through hole; the cover body is detachably connected with the groove so as to cover the through hole; the cover body comprises a body part and a surface part, wherein the surface part at least covers the edge of the body part, and the hardness of the surface part is smaller than that of the body part; when the cover body is covered on the groove, the surface part is abutted against the side wall of the groove so as to seal the groove. The cover body is made of two materials, namely a softer surface skin part and a harder body part, and the surface skin part at least covers the edge of the body part, so that the groove is sealed by the cover body.

Description

Capacitor emergency starting power supply

Technical Field

The utility model belongs to the technical field of power supplies, and particularly relates to a capacitor emergency starting power supply.

Background

The capacitive emergency starting power supply is a high-energy-density power supply which can release huge electric energy in a short time to start equipment, and is commonly used for starting an automobile engine. When being used for starting automobile engine, need connect the storage battery wiring between electric capacity emergency starting power source and automobile storage battery, then start electric capacity emergency starting power source, therefore, electric capacity emergency starting power source need set up the wiring port to supply the electric bottle wiring to insert.

The capacitor emergency starting power supply is used only when emergency occurs, and the capacitor emergency starting power supply is really used for a short time and is usually in a resting state. In the laying process, because of the arrangement of the wiring ports, external water vapor, dust and the like can enter the capacitor emergency starting power supply along the wiring ports, and damage is caused to the capacitor and other components. Therefore, when the capacitor emergency starting power supply is in a rest state, the connection port needs to be sealed.

The relevant emergency starting power supply seals wiring port department, adopts soft dustproof stopper, but this dustproof stopper is because structural design is too simple, then wiring port is difficult for sealed for outside vapor, dust etc. get into emergency starting power supply's inside.

Disclosure of Invention

In view of the above, the utility model provides a capacitor emergency starting power supply to solve the technical problem that a wiring port of the emergency starting power supply is not easy to be sealed.

The technical scheme of the utility model is realized as follows:

the embodiment of the utility model provides a capacitor emergency starting power supply, which comprises the following components: a housing in which a receiving chamber is formed; a groove is formed in one end of the shell, a through hole is formed in the bottom wall of the groove, and the through hole is used for inserting a battery wire; the capacitor component is arranged in the accommodating cavity; the wiring port of the capacitor assembly is exposed in the through hole; the cover body is detachably connected with the groove so as to cover the through hole; the cover body comprises a body part and a surface part, wherein the surface part at least covers the edge of the body part, and the hardness of the surface part is smaller than that of the body part; in a state that the cover body covers the groove, the surface skin part is abutted against the side wall of the groove so as to seal the groove.

In some embodiments, the body portion and the skin portion are injection molded as one piece.

In some embodiments, the surface of the body portion is provided with an injection molded locating ring.

In some embodiments, the injection molding positioning ring is disposed on a surface of the body portion facing the capacitor assembly; the surface part also coats the surface of the body part facing the accommodating cavity and avoids the injection molding positioning ring.

In some embodiments, a surface of the cover facing away from the capacitive component is provided with a protrusion, the protrusion being proximate to an edge of the cover.

In some embodiments, the surface part is further covered on the surface of the body part, which is away from the capacitor assembly, the protrusion is integrally formed on the surface of the surface part, which is away from the capacitor assembly, and the protrusion is disposed at one end of the cover body in the length direction.

In some embodiments, the part of the skin part wrapping the edge of the body part is wavy or concave-convex along the thickness direction of the cover body.

In some embodiments, the body portion is provided with a plurality of notches that are evenly spaced around a circle of the edge of the body portion.

In some embodiments, the cover further comprises: and one end of the connecting part is connected with one side of the cover body, which is close to the capacitor assembly, and the other end of the connecting part is connected with the shell.

In some embodiments, the connecting portion is connected to the other end of the cover in the length direction.

According to the cover body provided by the embodiment of the utility model, two materials, namely the softer surface skin part and the harder body part are adopted, and the surface skin part at least covers the edge of the body part, so that when the cover body is covered on the groove, the softer surface skin part is pressed between the harder body part and the harder side wall. That is, the body portion and the side wall correspond to the stopper fixing pieces on both sides of the skin portion, and the skin portion corresponds to the seal ring surrounding the body portion. The supporting role of the body part in the middle of the cover body, can produce great mutual extrusion force between the lateral wall of epidermis portion and recess, so great mutual extrusion force, not only make epidermis portion warp more greatly, thereby fill the recess between the lateral wall of body portion and recess more closely knit, thereby effectively improve the sealed effect between lid and the recess, owing to be provided with the through-hole that is used for inserting the storage battery wiring in the recess, show the wiring port that has the power supply bottle wiring to connect in the through-hole, then when the cover body lid closes in the recess, through-hole and wiring port all can be effectively sealed by this cover body, thereby effectively prevent outside vapor, dust etc. to get into the inside of this electric capacity emergency starting power supply.

Drawings

FIG. 1 is a diagram showing the whole structure of a cover in a closed state according to an embodiment of the present utility model;

FIG. 2 is an overall structure diagram of a cover in an open state according to an embodiment of the present utility model;

FIG. 3 is an enlarged view of FIG. 2A;

fig. 4 is an exploded view of a cover according to an embodiment of the present utility model.

Reference numerals illustrate:

1. a housing; 11. a groove; 111. a bottom wall; 112. a sidewall; 12. a through hole; 13. a DC interface; 14. type-c interface; 15. a connection hole; 2. a capacitor assembly; 21. a wiring port; 3. a cover body; 31. a body portion; 311. injection molding of a positioning ring; 312. a notch; 32. a skin portion; 321. injection molding the positioning hole; 33. a protrusion; 34. a connection part; 341. and a limiting ring.

Detailed Description

The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The individual features described in the specific embodiments can be combined in any suitable manner, without contradiction, for example by combination of different specific features, to form different embodiments and solutions. Various combinations of the specific features of the utility model are not described in detail in order to avoid unnecessary repetition.

In the following description, references to the term "first/second/are merely to distinguish between different objects and do not indicate that the objects have the same or a relationship therebetween. It should be understood that references to orientations of "above", "below", "outside" and "inside" are all orientations in normal use, and "left" and "right" directions refer to left and right directions illustrated in the specific corresponding schematic drawings, and may or may not be left and right directions in normal use.

It should be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. "plurality" means greater than or equal to two.

The embodiment of the utility model provides a capacitive emergency starting power supply, which is used for starting equipment, such as an automobile engine. It should be noted that the application scenario type of the embodiment of the present utility model does not limit the structure of the capacitor emergency starting power supply of the present utility model.

As shown in fig. 1 and 2, the capacitive emergency starting power supply includes a housing 1, a capacitive assembly 2, and a cover 3. A housing 1 is formed with a receiving chamber (not shown) in which a capacitor assembly 2 is disposed, the capacitor assembly being used to store and release electrical power for devices requiring emergency starting.

As shown in fig. 3, one end of the housing 1 is provided with a groove 11. The specific position of the groove 11 on the housing 1 is not limited in the embodiment of the present utility model, but the groove 11 may be in communication with the outside. Specifically, the groove 11 has a bottom wall 111 and a side wall 112 surrounding the bottom wall 111; the bottom wall 111 of the groove 11 is provided with a through hole 12, and the wiring port 21 of the capacitor assembly 2 is exposed in the through hole 12; wherein, the through hole 12 is used for inserting the wiring of the power bottle, and the wiring port 21 is used for electrically connecting the wiring of the power bottle. When the automobile engine needs to be started, one end of the battery wire is connected with the automobile battery, the other end of the battery wire is inserted into the through hole 12 and connected with the wire port 21, and then the capacitor emergency starting power supply is started, so that the instantaneous starting of the automobile engine can be realized.

As shown in fig. 3, the cover 3 is detachably connected to the groove 11, that is, the cover 3 can be covered on the groove 11 and can be separated from the groove 11; when the cover 3 is covered on the groove 11, the cover 3 can cover the through hole 12 of the bottom wall of the groove 11. Specifically, as shown in fig. 4, the cover 3 includes a main body 31 and a skin 32, and the skin 32 covers at least the edge of the main body 31. In the embodiment of the present utility model, the skin portion 32 may cover only the edge of the body portion 31, or may cover both the edge of the body portion 31 and other positions of the body portion 31; the coating may be detachable or may be fixedly connected. The hardness of the surface layer 32 is smaller than that of the main body 31, the surface layer 32 may be made of soft silica gel, and the main body 31 may be made of hard plastic.

As shown in fig. 3 and 4, in a state where the lid body 3 is covered on the groove 11, the skin portion 32 abuts against the side wall 112 of the groove 11 to seal the groove 11. Specifically, the cover 3 may be a flat plate structure, and the area of the cover 3 may be slightly larger than the opening area of the groove 11, and the cover 3 seals the groove 11 by tightly pressing the skin portion 32 wrapping the edge of the body portion 31 against the sidewall 112 of the groove 11. In the embodiment of the present utility model, the side wall 112 of the recess 11 is integrally formed on the housing 1, and the housing 1 may be made of a slightly hard plastic material.

According to the cover body provided by the embodiment of the utility model, two materials, namely the softer surface skin part and the harder body part are adopted, and the surface skin part at least covers the edge of the body part, so that when the cover body is covered on the groove, the softer surface skin part is pressed between the harder body part and the harder side wall. That is, the body portion and the side wall correspond to the stopper fixing pieces on both sides of the skin portion, and the skin portion corresponds to the seal ring surrounding the body portion. When the lid in this application closes in the recess, the supporting role of body portion in the middle of the lid for can produce great mutual extrusion force between the lateral wall of epidermis portion and recess, great mutual extrusion force like this makes epidermis portion warp more greatly, thereby fill the recess between the lateral wall of body portion and recess more closely knit, thereby effectively improve the sealed effect between lid and the recess, owing to be provided with the through-hole that is used for inserting the storage battery wiring in the recess, show the wiring port that has the power supply bottle wiring to connect in the through-hole, then when the lid in the recess, through-hole and wiring port all can be effectively sealed by this lid, thereby effectively prevent outside vapor, dust etc. to get into the inside of this electric capacity emergency starting power supply.

Compared with a sealing plug made of a single flexible material, the sealing plug made of the single flexible material can deform, so that the groove is sealed; however, the flexible sealing plug is made of too soft material, so that only a small-area groove can be sealed; if a large-area groove is sealed, as the middle part is not provided with a supporting part, larger mutual extrusion force is difficult to generate between the sealing plug and the side wall of the groove, so that the sealing is not compact enough; and because flexible sealing plug is yielding, if produce the mistake to this sealing plug and bump, the sealing plug is yielding to lose sealing connection, consequently, can not prevent outside vapor, dust etc. to get into the inside of this electric capacity emergency starting power supply effectively.

In some embodiments, as shown in fig. 3 and 4, the body portion 31 and the skin portion 32 are injection molded as one piece. Because the material of the body portion 31 is harder, the material of the skin portion 32 is softer, and particularly when in injection molding, the harder body portion 31 can be firstly molded, then the harder body portion 31 is placed in an injection mold, and then the softer skin portion 32 is molded on the surface of the body portion 31, so that after the body portion 31 and the skin portion 32 are molded into a whole, the connection is more compact, and the service life is longer. And is not easy to be lost when being used as a whole.

In addition, because the body part and the surface part are molded into a whole, the body part is made of harder materials, and the whole cover body has certain hardness. When the cover body is covered in the groove, the whole cover body is not easy to deform, and the surface skin part is made of softer materials, so that the edge of the cover body is easy to deform. Through the design of this kind of soft or hard combination for the lid can stabilize in the recess, forms fixed connection effect, can produce the extrusion between again and the recess and form, forms sealed effect, thereby has improved the whole sealing performance of lid.

In some embodiments, as shown in fig. 1 and 3, the shape of the cover 3 is adapted to the shape of the groove 11, for example, in the case that the cover 3 is rectangular, ignoring the thickness of the cover 3 and the depth of the groove 11, the groove 11 is also rectangular with the same shape; the cover 3 is circular and the recess 11 is circular. And, when the cover 3 is in a separated state from the groove 11, and the area of the cover 3 is slightly larger than the area of the groove 11, while neglecting the thickness of the cover 3 and the depth of the groove 11. Thus, when the cover 3 is covered in the groove 11, the skin portion 32 is in a pressed state, thereby achieving the sealing effect on the groove 11.

In some embodiments, as shown in fig. 4, the surface of the body portion 31 is provided with an injection molded locating ring 311 protruding. The number of injection molded retaining rings 311 may be one or more, four being shown in fig. 4. The injection positioning ring 311 is provided for positioning the body portion 31 in the cavity of the injection mold; specifically, the positioning rod in the cavity of the injection mold extends into the injection positioning ring 311, so that the body 31 can be positioned. Through the location to the body portion to can realize the surface stabilization shaping epidermis portion at the body portion, and after epidermis portion injection moulding, can be with body portion and epidermis portion as an organic whole, break away from the locating lever in the cavity of moulding plastics simultaneously, the demolding is comparatively convenient promptly.

In some embodiments, as shown in fig. 3 and 4, the injection molding positioning ring 311 is disposed on the surface of the body portion 31 facing the capacitor assembly 2, so that when the cover 3 is covered in the groove 11, the injection molding positioning ring 311 is hidden and not exposed, thereby improving the aesthetic degree of the capacitor emergency starting power supply.

As shown in fig. 3 and 4, the surface of the main body 31 facing the capacitor assembly 2 is further covered by the surface part 32, so that the injection molding connection area between the surface part 32 and the main body 31 is increased, and the connection is firmer. When an operator opens or covers the cover body, the cover body is inevitably pulled or extruded, and the risk of separation of the surface skin part and the body part caused by pulling or extrusion can be reduced by increasing the connection area of the surface skin part and the body part, so that the service life of the cover body is prolonged.

In addition, in the aspect of injection molding technology, the surface skin part not only covers the edge of the body part and the surface of the body part, which is away from the capacitor assembly, but also covers the surface of the body part, which is towards the capacitor assembly, so that the surface skin part can be formed in a communicated cavity in the injection mold, thereby being beneficial to simplifying the structure of the injection mold required during injection molding and being beneficial to the structural design of the injection mold.

When the body 31 is placed in the cavity of the injection mold for injection molding, the injection molding compound for forming the skin 32 automatically bypasses the injection molding positioning ring 311, and after injection molding, injection molding positioning holes 321 are left on the surface of the skin 32. Specifically, the height of the injection molding positioning ring 311 is flush with the surface of the skin portion 32 facing the capacitor assembly 2, so as to improve the aesthetic appearance.

In some embodiments, as shown in fig. 3, the surface of the cover 3 facing away from the capacitor assembly 2 is provided with a protrusion 33, and the protrusion 33 corresponds to a pulling part and mainly serves to facilitate pulling out the cover 3. The specific shape of the protrusion 33 is not limited in the embodiment of the present utility model, and may be rectangular as shown in fig. 3; the protrusion 33 may be protruded with respect to the top surface of the cover 3, wherein the top surface of the cover 3 indicates a surface of the cover 3 far from the capacitor assembly, the bottom surface of the cover 3 indicates a surface of the cover 3 near the capacitor assembly, and the side surface of the cover 3 indicates a surface connecting the top surface and the bottom surface. The protrusion 33 may be protruded with respect to a side surface of the cover 3, and in a case where the protrusion 33 is protruded with respect to a top surface of the cover 3, the protrusion 33 may be close to an edge of the cover 3, and in a case where the protrusion 33 is protruded with respect to a side surface of the cover 3, the protrusion may protrude from an edge of the cover 3 along a length direction of the cover 3 (as shown in fig. 4), and the length direction may be understood as a left-right direction as shown in fig. 3 or 4, and indicated by a dotted line a. When the cover body 3 is covered on the groove 11, the edge of the cover body 3 is tightly connected with the side wall 112 of the groove 11 through the surface skin part 32, so that the connection strength of the cover body 3 and the groove 11 at the edge is higher than that of other positions on the cover body 3.

In some embodiments, as shown in fig. 2 and 4, the skin portion 32 is further coated on the surface of the body portion 31 facing away from the capacitor assembly 2, and in particular, the skin portion 32 is injection molded on the surface of the body portion 31 facing away from the capacitor assembly 2, which is easy to implement. The protrusion 33 is integrally formed on the surface of the skin portion 32 facing away from the capacitor assembly 2, and the connecting structure has two embodiments, one embodiment is that the protrusion 33 and the skin portion 32 are made of the same material, so that the protrusion 33 and the skin portion 32 are simultaneously injection-molded on the surface of the body portion 31 facing away from the capacitor assembly 2; in another embodiment, the protrusion 33 and the skin portion 32 are made of two different materials, and after the skin portion 32 is injection molded on the surface of the body portion 31 facing away from the capacitor assembly 2, the protrusion 33 is injection molded on the surface of the skin portion 32 facing away from the capacitor assembly 2. In some embodiments, the skin portion 32 is wrapped around the body portion 31, that is, the body portion 31 forms a cavity inside, the body portion 31 is located in the middle of the skin portion 32, and by wrapping the skin portion 32 around the body portion 31, the difficulty of injection molding of the skin portion is reduced, the adhesion strength of the skin portion 32 and the body portion 31 is improved, and the risk of falling off the skin portion relative to the body portion is reduced. The body part is arranged at the center of the whole surface skin part, the surface skin part can ensure the tightness in contact with the side wall of the groove, the body part can play a role in supporting the strength of the whole cover body, the risk of deformation of the whole cover body is reduced, and the whole tightness of the cover body is improved.

In some embodiments, as shown in fig. 3 and 4, the portion of the skin portion 32 that is wrapped around the edge of the body portion 31 is wavy or rugged along the thickness direction of the cover 3. The thickness direction of the cover 3 is indicated by a broken line b. The wavy or concave-convex structure is beneficial to the deformation of the surface skin part 32 wrapping the edge of the body part 31, so that the gap between the body part 31 and the side wall 112 is easier to fill, and the sealing effect is better; and the wavy and rugged structure forms a multi-layer seal between the body portion 31 and the side wall 112, further improving the sealing effect.

In some embodiments, as shown in fig. 4, the body portion 31 is provided with a plurality of notches 312, the plurality of notches 312 being evenly spaced around a circle of the edge of the body portion 31. The plurality of notches 312 are disposed, so that after the skin portion 32 is injection molded on the edge of the body portion 31, the connection area between the skin portion 32 and the body portion 31 is larger, so that the connection between the skin portion 32 and the edge of the body portion 31 is firmer. Therefore, as shown in fig. 3, when the cover 3 is covered on the groove 11, the gap between the body 31 and the sidewall 112 is filled with the skin 32 fixed on the body 31 more firmly, which increases the complexity of the structure of the body 31 and the skin 32 in the circumferential direction, and the skin 32 is not easy to be dislocated between the body 31 and the sidewall 112, i.e. the cover 3 is sealed more firmly when covered on the groove 11.

As shown in fig. 4, the opening of the notch 312 gradually becomes smaller in a direction gradually approaching the edge line (the edge line is indicated by a thick broken line c in the figure) of the body portion 31, forming a dovetail shape. In this way, after the skin portion 32 is injection molded at the edge of the body portion 31, the skin portion 32 and the edge of the body portion 31 form a dovetail connection, so that the connection between the skin portion 32 and the edge of the body portion 31 is firmer, less prone to cracking, and less prone to dislocation when the skin portion 32 is between the body portion 31 and the side wall 112.

In some embodiments, the cover 3 further comprises a connection 34. The connecting portion 34 may be a strip or a rod, as shown in fig. 3, one end of the connecting portion 34 is connected to one end of the cover 3 near the capacitor assembly 2, and the other end of the connecting portion 34 is connected to the housing 1. Of course, the connecting portion 34 may be made of soft and deformable material, so as to facilitate a larger opening angle between the cover 3 and the housing 1. The connecting portion 34 may be movably connected to the housing 1, and the specific structure of the movable connection is not limited in the embodiment of the present utility model, as long as the connecting portion 34 is not completely separated from the housing 1. According to the embodiment of the utility model, the cover body is not easy to lose when the cover body is opened through the arrangement of the connecting part.

In some embodiments, as shown in fig. 3 and 4, a rod-shaped connection portion 34 is movably connected to the housing 1. Specifically, a limiting ring 341 is disposed at one end of the connecting portion 34 away from the cover 3, a connecting hole 15 is disposed at the bottom wall 111 of the groove 1, the connecting hole 15 is communicated with the accommodating cavity in the housing 1, and the diameter of the connecting hole 15 is larger than that of the connecting portion 34 and smaller than the outer diameter of the limiting ring 341. In specific assembly, one end of the connecting portion 34, which is far away from the cover 3, passes through the connecting hole 15 and extends into the accommodating cavity of the housing 1, and the limiting ring 341 is located in the accommodating cavity of the housing 1. In this way, the connecting portion 34 can be moved to and fro in the through hole 34 without being separated from the housing 1 due to the limiting action of the limiting ring 341. When the cover body 3 is covered in the groove 11, most of the length of the connecting part 34 can enter the accommodating cavity of the shell 1 and cannot stay in the groove 11 to be extruded and deformed by the cover body 3, so that the connecting part 34 is protected, and the service life of the connecting part is prolonged.

In some embodiments, as shown in fig. 3, the connection portion 34 is connected to one end of the cover 3 in the length direction of the cover 3, and the protrusion 33 is disposed at the other end of the cover 3 in the length direction of the cover 3, that is, the connection portion 34 and the protrusion 33 are disposed opposite to each other along the length direction of the cover 3. The longitudinal direction of the lid 3 matches the longitudinal direction of the projection 33, and is indicated by a broken line a. Through the relative setting of connecting portion 34 and protruding 33, when the operating personnel pulls up the protruding, because protruding 33 is farther from connecting portion 34, then protruding 33 receives connecting portion 34's effect influence less for lid 3 can obtain great opening angle for casing 1, in order to the insertion of storage battery wiring.

When the cover 3 is rectangular, the two right angles of the cover 3 are away from the protrusion 33 when the connection portion 34 and the protrusion 33 are disposed opposite to each other. Specifically, the connection 34 may be positioned near either of these two right angles. In this way, the cover 3 can obtain a rotation angle with more dimensions, thereby reducing the limit influence of the housing 1 on the cover 3.

In some embodiments, as shown in fig. 3, the bottom wall 111 of the groove 11 may further be provided with a DC interface 13 and a type-c interface 14, and when the cover 3 is covered in the groove 11, the DC interface 13 and the type-c interface 14 are also sealed, so as to reduce damage to the capacitor assembly 2 caused by external steam, dust, etc. entering the accommodating cavity of the capacitor emergency starting power supply along the DC interface 13 and the type-c interface 14. The charging of the capacitor emergency starting power supply can be achieved by connecting a DC interface 13 and a type-c interface to a cigar lighter or other devices in the automobile.

The foregoing description is only of the preferred embodiments of the present utility model, and is not intended to limit the scope of the present utility model.

Claims

1. A capacitive emergency start-up power supply, comprising:

a housing in which a receiving chamber is formed; a groove is formed in one end of the shell, a through hole is formed in the bottom wall of the groove, and the through hole is used for inserting a battery wire;

the capacitor component is arranged in the accommodating cavity; the wiring port of the capacitor assembly is exposed in the through hole;

the cover body is detachably connected with the groove so as to cover the through hole;

the cover body comprises a body part and a surface part, wherein the surface part at least covers the edge of the body part, and the hardness of the surface part is smaller than that of the body part; in a state that the cover body covers the groove, the surface skin part is abutted against the side wall of the groove so as to seal the groove.

2. The capacitive emergency start-up power supply of claim 1, wherein the body portion and the skin portion are injection molded as one piece.

3. The capacitive emergency start-up power supply of claim 2, wherein the surface of the body portion is provided with an injection molded locating ring protruding therefrom.

4. A capacitive emergency start-up power supply according to claim 3, wherein the injection molded locating ring is provided on a surface of the body portion facing the capacitive assembly; the surface part also coats the surface of the body part facing the accommodating cavity and avoids the injection molding positioning ring.

5. The capacitive emergency start-up power supply of claim 1, wherein a surface of the cover facing away from the capacitive assembly is provided with protrusions, the protrusions being proximate to edges of the cover.

6. The capacitive emergency starting power supply according to claim 5, wherein the surface part is further covered on the surface of the body part, which is away from the capacitive component, the protrusion is integrally formed on the surface of the surface part, which is away from the capacitive component, and the protrusion is disposed at one end of the cover body in the length direction.

7. The capacitor emergency starting power supply according to any one of claims 1 to 6, wherein the portion of the skin portion covering the edge of the body portion is wavy or rugged in the thickness direction of the cover.

8. The capacitive emergency start-up power supply of any one of claims 1 to 6, wherein the body portion is provided with a plurality of indentations evenly spaced around an edge of the body portion.

9. The capacitive emergency start-up power supply of any one of claims 1-6, wherein the cover further comprises:

and one end of the connecting part is connected with one side of the cover body, which is close to the capacitor assembly, and the other end of the connecting part is connected with the shell.

10. The capacitive emergency start power supply of claim 9, wherein the connection portion is connected to the other end of the cover in the length direction.