CN217955674U - Capacitor for vehicle - Google Patents

Abstract

The application discloses a capacitor for a vehicle, which comprises a capacitor core group and a shell, wherein the shell comprises a shell body and a cover body, and the shell body and the cover body can be detachably connected through the inserting connection characteristics of a clamping groove and a clamping block, so that the capacitor is favorably assembled; the shell is provided with a through hole, and the electrode can extend out through the through hole so as to be convenient for connecting a circuit; the inside protruding stupefied that is provided with of shell, when pouring into the insulator, the insulator can stretch to protruding stupefied both sides, treats that the insulator solidifies, protruding stupefied just can block in the insulator, and then consolidates the shell, because protruding stupefied and insulator zonulae occludens, when the shell receives external influences such as extrusion, drawing, vibration, the insulator can cooperate the shell to disperse external force, and can prevent shell deformation or damage.

Description

Capacitor for vehicle

Technical Field

The application relates to the technical field of capacitors, in particular to a capacitor for a vehicle.

Background

The capacitor is one of electronic elements widely used in electronic equipment, plays an important role in circuits such as tuning, bypass, coupling, filtering and the like, and is widely applied to industries such as new energy, energy conservation, power supply, electric locomotives and the like.

The main functional component of the capacitor is a capacitor core assembly formed by capacitor cores, and in order to protect the capacitor core assembly and ensure the use safety, the capacitor core assembly is usually sealed in an outer shell by using an insulator. In the actual use process, if the condenser receives external influences such as jolt, vibration, high temperature high pressure often, the shell takes off easily, can lead to equipment to be impaired, and serious still can cause the incident.

Disclosure of Invention

The purpose of this application is to overcome the shortcoming that exists among the prior art, provides a capacitor for vehicle.

To achieve the above technical object, the present application provides a capacitor for a vehicle, including: the capacitor core group comprises a capacitor core, a bus bar and electrodes; the shell is used for arranging the capacitor core group; the shell comprises a shell body and a cover body, wherein one of the shell body and the cover body is provided with a clamping groove, and the other of the shell body and the cover body is provided with a clamping block, so that the clamping block is inserted into the clamping groove, and the shell body and the cover body can be assembled; the shell is provided with a through hole, and the electrode can extend out through the through hole; the shell is internally provided with a convex edge.

Further, one side of the shell is open, and an insulator can be poured into the shell through the opening; part of the opening is formed on the shell, and the other part of the opening is formed on the cover body.

Further, the convex ridge comprises an inlet ridge disposed around the opening; part of the inlet edge is arranged on the shell, and the other part of the inlet edge is arranged on the cover body.

Furthermore, the convex edge also comprises a reinforcing edge which is arranged along the inner wall of the shell and/or the cover body.

Further, at least one end of the reinforcing rib is connected to the inlet rib.

Further, the card slot includes: the positioning groove is arranged on the end surface of the side wall of the shell or the cover body; the side wall of part of the shell or the cover body is inwards sunken to form a limiting groove; the fixture block includes: the positioning block is convexly arranged on the end surface of the side wall of the cover body or the shell and can be inserted into the positioning groove; the lateral wall of stopper, part lid or casing is outside protruding, forms the stopper, and the stopper can insert in the spacing groove.

Furthermore, the bottom of the shell body, which is far away from the cover body, is provided with an installation block, and the installation block is provided with a connecting hole; the connecting hole is used for installing a fastener so as to fix the shell.

Further, a reinforcing block is arranged between the mounting block and the cover body.

Further, the vehicle capacitor further includes a bracket, and the bracket includes: a base for supporting the housing; the two frame plates are arranged on the base at intervals; the pressing plate is arranged on the two frame plates opposite to the base; when the support is arranged on the shell, the shell is positioned among the base, the frame plate and the pressure plate.

Further, the holder may further comprise an auxiliary block for holding the electrode extending from the housing.

The application also provides a capacitor for a vehicle, which comprises a capacitor core group and a shell, wherein the shell comprises a shell body and a cover body, and the shell body and the cover body can be detachably connected through the insertion characteristics of the clamping grooves and the clamping blocks, so that the capacitor is assembled; the shell is provided with a through hole, and the electrode can extend out through the through hole so as to be convenient for connecting a circuit; the inside protruding stupefied that is provided with of shell, when pouring into the insulator, the insulator can stretch to protruding stupefied both sides, treats that the insulator solidifies, protruding stupefied just can block in the insulator, and then consolidates the shell, because protruding stupefied and insulator zonulae occludens, when the shell receives external influences such as extrusion, drawing, vibration, the insulator can cooperate the shell to disperse external force, and can prevent shell deformation or damage.

Drawings

Fig. 1 is a schematic structural diagram of a capacitor for a vehicle according to the present application;

FIG. 2 is an exploded view of the structure of the vehicle capacitor shown in FIG. 1;

FIG. 3 is a schematic structural diagram of an outer case of the automotive capacitor shown in FIG. 1;

FIG. 4 is a schematic view of the structure of the shell in the enclosure shown in FIG. 3;

FIG. 5 is a schematic structural diagram of a cover in the housing shown in FIG. 3;

FIG. 6 is a schematic structural diagram of another vehicular capacitor provided herein;

fig. 7 is a schematic structural view of the vehicle capacitor of fig. 6 without a pressing plate and a frame plate.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying the present application are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. This application is capable of embodiments in many different forms than those described herein and that modifications may be made by one skilled in the art without departing from the spirit and scope of the application and it is therefore not intended to be limited to the specific embodiments disclosed below.

In the description of the present application, it is to be understood that the terms "central," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and to simplify the description, but are not intended to indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and are not to be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless explicitly specified otherwise.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as the case may be.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "above," and "over" a second feature may be directly on or obliquely above the second feature, or may simply mean that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. As used herein, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are for purposes of illustration only and do not denote a single embodiment.

The application provides a capacitor for a vehicle, includes: the capacitor core group 10, the capacitor core group 10 includes the capacitor core, the bus bar and the electrode; a case 20 for housing the capacitor core pack 10; the housing 20 includes a housing 21 and a cover 22, one of the housing 21 and the cover 22 is provided with a slot 23, and the other is provided with a latch 24, so that the latch 24 is inserted into the slot 23, and the housing 21 and the cover 22 can be assembled; the housing 20 is provided with a through hole through which the electrode can protrude; the housing 20 is provided with a ridge 25 therein.

First, the capacitor core group 10 is explained.

The capacitor core group 10 is a main functional component of the capacitor, and is connected into a circuit, and can play roles of tuning, bypassing, coupling, filtering and the like. The capacitor core group 10 mainly comprises a capacitor core, a bus bar and electrodes, wherein the bus bar is used for connecting the end part of the capacitor core and the electrodes; generally, the capacitor core has two ends, and thus, the capacitor core assembly 10 at least includes two busbars and two sets of electrodes, where one busbar is used to connect a first end of the capacitor core to one set of electrodes, and another busbar is used to connect a second end of the capacitor core to another set of electrodes; the electrodes are used for connecting with a circuit.

Alternatively, the capacitor core group 10 includes a plurality of capacitor cores, and the plurality of capacitor cores are connected in parallel, so that the power of the capacitor can be increased. At this time, one bus bar can be connected to one end of all the capacitor cores at the same time.

Alternatively, the capacitor core group 10 includes two groups of capacitor cores, and either group includes a plurality of capacitor cores; the capacitor core group 10 further comprises three busbars, and any two adjacent busbars are respectively used for connecting two end parts of one group of capacitor cores; the capacitor core group 10 further comprises three groups of electrodes, and a group of electrodes is arranged on any busbar. At this time, the capacitor core pack 10 has a two-capacitor three-point structure in which one set of electrodes is a common electrode.

In putting into shell 20 with capacitor core group 10, the shell can protect capacitor core group 10, avoids capacitor core group 10 to expose outside impaired, also can avoid operating personnel or external structure mistake to electrocute container core group 10.

Since the capacitor core pack 10 is connected to the circuit, an insulator (e.g., epoxy resin) may be injected into the outer case 20 after the capacitor core pack 10 is placed into the outer case 20. So, can improve the safe in utilization of condenser on the one hand, avoid appearing the condition such as electric leakage, electrocute, short circuit, on the other hand, the insulator solidifies the back, can fix capacitor core group 10 in shell 20, is favorable to the structural stability of whole condenser.

In order to facilitate the insertion of the capacitor core assembly 10, the housing 20 provided by the present application is configured as a separate structure, and the housing 21 and the cover 22 are detachably connected through the insertion characteristics of the engaging groove 23 and the engaging block 24. When it is necessary to assemble the capacitor core pack 10 in the case 20 or to put the capacitor core pack 10 into the case 20, the case 21 and the cover 22 are separated for easy handling; after the capacitor core pack 10 is arranged, the case 21 and the cover 22 are assembled so that the capacitor core pack 10 is fixed and protected by the outer case 20.

In order to facilitate the connection of the electrodes to the circuit, the casing 20 is provided with a through hole which penetrates through the side wall of the casing 20; when the capacitor core pack 10 is installed in the case 20, the electrodes of the capacitor core pack 10 pass through the through holes and protrude to the outside so as to be connected to an electric circuit.

The through hole may be provided on the housing 21, may be provided on the cover 22, may be partially provided on the housing 21, and may be partially provided on the cover 22. In order to avoid damaging the electrodes, the busbar and the capacitor core, the through holes are preferably formed at the connecting part of the shell 21 and the cover 22; when the capacitor core pack 10 is inserted into the case 21 or the cover 22 is assembled, the electrodes of the capacitor core pack 10 can directly enter the through-holes.

In a specific embodiment, referring to fig. 1, 2, 4 and 5, a limiting groove 23b is disposed on the upper end surface of the casing 21 close to the cover 22, and a limiting block 24b is disposed on the lower end surface of the cover 22 close to the casing 21; the depth of the limiting groove 23b is larger than the height of the limiting block 24 d; when the housing 21 and the cover 22 are assembled, the limiting block 24d extends into the limiting groove 23 b; the side walls of the limiting groove 23b and the limiting block 24d are in contact with each other, so that the assembling process can be limited mutually to ensure the accurate inserting direction, and the assembling process can be limited to a certain extent and avoid the stress easy separation of the shell 21 and the cover 22. After the assembly is completed, the upper end surface of the housing 21 abuts against the lower end surface of the cover 22, the stopper 24d is located in the stopper groove 23b, and since the groove depth of the stopper groove 23b is large, a gap is formed between the stopper groove 24d and the stopper groove 23b, and as shown in fig. 3, the gap can be used as a through hole.

More specifically, in this embodiment, when the capacitor is assembled, the case 21 and the lid 22 are separated, and the capacitor core pack 10 is placed into the case 21 from top to bottom through the upper end opening of the case 21; in the process of placing, the electrodes of the capacitor core group 10 are aligned to the corresponding limiting grooves 23b, the electrodes contact the bottoms of the limiting grooves 23b, and the capacitor core group 10 is placed in place; assembling the cover body 22 on the cover body 22, and extending the limit block 24d into the limit groove 23b, so that the limit block 24d abuts against the electrode, and the limit groove 23b can be matched with the limit block 24d to fix the capacitor core assembly 10; at the same time, the gaps serving as perforations are closed, and flooding of the poured insulation through the gaps can be avoided.

Further, the shell 20 is internally provided with the convex edge 25, the convex edge 25 protrudes inwards compared with the inner wall of the shell 20, when the insulator is poured, the insulator can stretch to the two sides of the convex edge 25, the insulator is solidified, the convex edge 25 can be clamped into the insulator, and then the shell 20 is reinforced.

As can be easily understood, since the ribs 25 are tightly coupled to the insulator, when the housing 20 is subjected to external influences such as compression, tension, vibration, etc., the insulator can cooperate with the housing 20 to disperse external forces and can prevent the housing 20 from being deformed or broken.

For example, when the housing 21 and the cover 22 are assembled in a vertical direction, at least a portion of the protruding edge 25 may be extended in a horizontal direction; therefore, after the insulator in the shell 20 is solidified, the convex edge 25 is positioned in the insulator, the upper side and the lower side of the convex edge 25 are blocked by the insulator, and meanwhile, the movement of the insulator in the vertical direction is also blocked by the convex edge 25. The shell 21 and the cover 22 are separated in the vertical direction, when an external force acts on the shell 21 and/or the cover 22 to move the shell 21 or the cover 22, the insulator connected with the shell 21 or the cover 22 can move along with the external force, and the insulator cannot freely move in the vertical direction due to the obstruction of the convex ribs 25, so that the position of the insulator is stable, the shell 21 and the cover 22 are difficult to separate, and the stable assembly state of the whole shell 20 is further ensured.

The protruding edge 25 may be provided only in the case 21 or only in the cover 22, or both the case 21 and the cover 22 may be provided with the protruding edge 25 if necessary. The convex edge 25 can be horizontally arranged, vertically arranged and obliquely arranged. Only one convex rib 25 may be arranged in the outer shell 20, or a plurality of convex ribs 25 may be arranged.

The present application does not limit the arrangement position, shape and number of the ridges 25.

To facilitate the pouring of the insulation, in one embodiment, one side of the housing 20 is open, and the insulation can be poured into the housing 20 through the opening.

The opening may be provided only in the case 21 or only in the cover 22, or if necessary, a part of the opening may be formed in the case 21 and another part of the opening may be formed in the cover 22.

When the shell 21 and the cover 22 are provided with partial openings, the two partial openings are combined together to form a complete opening after the shell 21 and the cover 22 are assembled; thus, the aperture of the opening is larger, on one hand, the material required for preparing the shell 20 can be saved, and on the other hand, the injection of the insulator is more convenient.

Referring specifically to fig. 1-3, in the illustrated embodiment, one side wall of the housing 20 is missing such that one side of the housing 20 is in a fully open position. After the capacitor core assembly 10 is placed into the shell 21, the shell 21 and the cover 22 are assembled, so that the capacitor core assembly 10 and the shell 20 are relatively fixed, the opening side of the shell 20 is placed upward, the insulator is injected into the shell 20 through the opening, the insulator flows into the shell 20 and fills the gap between the capacitor core assembly 10 and the shell 20, and the insulator can be stably positioned in the shell 20 until solidification due to the relative sealing of other walls of the shell 20.

Further, in the embodiment shown in fig. 1, one set of electrodes of the capacitor core pack 10 is protruded outside through the opening. In this case, the openings can also serve as perforations, which is advantageous for simplifying the structure of the housing 20.

Optionally, the raised ridge 25 comprises an inlet ridge 25a, the inlet ridge 25a being disposed around the opening.

Reference may be made in particular to figures 1 to 5. The inlet edge 25a is arranged on the inner side of the opening, so that the phenomenon that the insulator overflows due to overhigh filling speed can be avoided when the insulator is filled; the solid insulation is also prevented from moving through the opening relative to the housing 20 after the insulation has solidified. Meanwhile, the inlet edge 25a can also enhance the structural strength of the opening side of the shell 20, and avoid the damage of the opening part of the shell 20 due to stress.

When the opening is provided only on the housing 21, the inlet ridge 25a is provided on the inner wall of the housing 21 around the opening. When the opening is provided only on the cover body 22, the inlet ridge 25a is provided on the inner wall of the cover body 22 around the opening. When part of the opening is formed on the shell 21 and the other part of the opening is formed on the cover 22, part of the inlet edge 25a is arranged on the shell 21, and the other part of the inlet edge 25a is arranged on the cover 22; when the housing 21 and cover 22 are assembled, the two inlet edges 25a are brought together to form a ring-like structure and surround the opening.

Optionally, the protruding edge 25 further includes a reinforcing edge 25b, and the reinforcing edge 25b is disposed along an inner wall of the case 21 and/or the cover 22.

The reinforcing ridge 25b extends toward the inside of the case 20, differently from the inlet ridge 25 a; the reinforcing ribs 25b are arranged on the walls of the shell 20, so that the contact positions of the insulator and the convex ribs 25 can be increased, and the mutual limiting effect of the insulator and the convex ribs is further enhanced.

The reinforcing rib 25b may be provided only in the case 21 or only in the cover 22, and if necessary, the reinforcing rib 25b may be provided in both the case 21 and the cover 22. The present application does not limit the arrangement position, shape and number of the reinforcing ribs 25b.

In one embodiment, referring to fig. 3 to 5, a continuous reinforcing rib 25b is disposed on the inner wall of the housing 21, one end of the reinforcing rib 25b is close to one side of the opening, the other end of the reinforcing rib extends to the other side of the opening along a plurality of side walls of the housing 21, and the whole reinforcing rib 25b is horizontally disposed; the inner wall of the cover 22 is also provided with a continuous reinforcing rib 25b, and the two reinforcing ribs 25b are arranged in parallel and in parallel. Further, since the height of the lid body 22 in the vertical direction is smaller than the height of the case body 21, the reinforcing ridge 25b provided in the lid body 22 is narrower than the reinforcing ridge 25b provided in the case body 21,

optionally, at least one end of the reinforcing ridge 25b is connected to the inlet ridge 25 a.

For example, in the embodiment shown in fig. 3 to 5, the inlet edge 25a of the housing 21 includes a horizontal portion disposed on the bottom of the housing and vertical portions disposed on the two side walls (the bottom and the two side walls form a U-shaped opening); the inlet edge 25a of the cover 22 includes a horizontal portion disposed on the top and vertical portions disposed on the two side walls (the top and the two side walls form an inverted U-shaped opening). One end of the reinforcing ridge 25b provided on the case 21 or the cover 22 extends to one side wall constituting the opening and is connected to the inlet ridge 25a of the vertical portion provided on the side wall; and the other end of the reinforcing rib 25b extends horizontally without reaching the other side wall forming the opening; therefore, the other end of the reinforcing ridge 25b is spaced apart from the entrance ridge 25a on the other side wall.

Through making the one end of strengthening stupefied 25b link to each other with the stupefied 25a of entry, strengthen stupefied 25b and form the contained angle between the stupefied 25a of entry, when pouring into the insulator in the shell 20, the insulator flows into the contained angle, receives to strengthen stupefied 25b and the influence of the stupefied 25a position of linking to each other of entry, and the insulator after solidifying can receive protruding stupefied 25 and block in a plurality of directions, more is favorable to the structure of whole condenser to stabilize.

In other embodiments, the reinforcing rib 25b can extend from one side wall forming the opening to the other side wall forming the opening along the inner wall of the housing 21 or the cover 22, and both ends of the reinforcing rib 25b in the length direction are connected to the inlet rib 25 a.

Optionally, the card slot 23 includes: a positioning groove 23a provided on an end surface of a side wall of the case 21 or the cover 22; and a limiting groove 23b, wherein the side wall of part of the shell 21 or the cover 22 is inwards sunken to form the limiting groove 23b.

Referring specifically to fig. 4, in the illustrated embodiment, the housing 21 includes a bottom plate 21a and a plurality of side plates 21b disposed on the bottom plate 21a, and the plurality of side plates 21b are connected to form a side wall of the housing 21; the top surface of the side plate 21b, i.e., "the end surface of the side wall of the housing 21", is used to contact the cover 22; a groove is arranged in the middle of the top surface of any side plate 21b, and the grooves on all the side plates 21b are communicated with each other to form a continuous positioning groove 23a.

With continued reference to fig. 4, it is easily understood that if the side plate 21b is not provided with the limiting groove 23b, all the side plates 21b are equal in height; therefore, the top surfaces of the side plates 21b not provided with the limiting grooves 23b are all in the same plane; the stopper groove 23b is a portion where the top of the side plate 21b is depressed inward.

Correspondingly, the cartridge 24 includes: a positioning block 24a protruding from the end surface of the side wall of the cover 22 or the housing 21 and capable of being inserted into the positioning groove 23a; and a stop block 24b, which is formed by protruding outward a part of the cover 22 or the side wall of the housing 21, wherein the stop block 24b can be inserted into the stop groove 23b.

Referring specifically to fig. 5, in the illustrated embodiment, the cover 22 includes a cover plate 22a and a plurality of insert plates 22b disposed on the circumferential side of the cover plate 22a, and the plurality of insert plates 22b are connected to form a sidewall of the cover 22; the bottom surface of the insertion plate 22b, i.e., "the end surface of the side wall of the cover 22", is used to contact the housing 21; a positioning block 24a protruding downwards is arranged in the middle of the bottom surface of any inserting plate 22 b. The thickness of the positioning block 24a is adapted to the width of the positioning slot 23a, so that the positioning block 24a is inserted into the positioning slot 23a, and the housing 21 and the cover 22 can be assembled together; because the groove walls on the two sides of the positioning groove 23a can limit the movement of the positioning block 24a, after the positioning block 24a is inserted into the positioning groove 23a, the shell 21 and the cover 22 have a relatively stable connection state; particularly, when the housing 20 vibrates in the horizontal direction, the housing 21 and the cover 22 are not easily vibrated apart because a part of the positioning blocks 24a are restricted by the positioning grooves 23a in the left-right direction and another part of the positioning blocks 24a are restricted by the positioning grooves 23a in the front-rear direction.

With continued reference to fig. 5 in conjunction with fig. 3, it will be readily appreciated that stopper 24b is disposed in correspondence with stopper groove 23 b; the part of the bottom surface of the inserting plate 22b, which is not provided with the stopper 24b, is in the same plane, and the stopper 24b protrudes toward the housing 21 compared with the inserting plate 22 b. During assembly, the limiting block 24b is aligned with the limiting groove 23b, so that the shell 21 and the cover 22 can be accurately inserted; the corresponding arrangement of the limiting groove 23b and the limiting block 24b can facilitate the calibration of the relative positions of the shell 21 and the cover 22. Because the limiting groove 23b has a certain groove depth, the limiting block 24b enters the limiting groove 23b and moves to the bottom of the limiting groove 23b along the limiting groove, and the groove wall of the limiting groove 23b can limit the moving direction of the limiting block 24b, which is beneficial to the assembling accuracy of the shell 21 and the cover body 22.

Meanwhile, the groove wall of the limiting groove 23b can also obstruct the cover 22 from moving along the extending direction of the positioning groove 23a. For example, the positioning groove 23a extends along the left-right direction and is disposed on one side plate 21b, and when at least one limiting groove 23b is disposed on the side plate 21b, since two groove walls of the limiting groove 23b are disposed at intervals along the left-right direction, after the limiting block 24b is inserted into the limiting groove 23b, the limiting block 24b cannot move along the left-right direction, and thus the cover 22 cannot move along the left-right direction.

From this, the cooperation sets up spacing groove 23b and stopper 24b, constant head tank 23a and locating piece 24a, can enough increase draw-in groove 23 and fixture block 24's area of contact, improves frictional force, avoids the two relative motion, can make things convenient for grafting of casing 21 and lid 22 again, still is favorable to the stability of the shell 20 after the equipment.

Furthermore, in order to better play a role in limiting, grooves are also formed in the groove walls on the two sides of the limiting groove 23b and in the middle of the bottom of the groove, and the grooves in the limiting groove 23b are communicated with the grooves in the top surface of the side plate 21b to form a continuous positioning groove 23a.

Specifically, in the embodiment shown in fig. 4, the positioning groove 23a on the top surface of the side wall of the housing 21 includes both a horizontally extending groove (the horizontally extending groove is on the top surface of the side plate 21b and the bottom surface of the limiting groove 23 b) and a vertically extending groove (the vertically extending groove is on the wall of the limiting groove 23 b); correspondingly, the positioning block 24a on the bottom surface of the cover 22 includes both a horizontally extending portion (the horizontally extending portion is on the bottom surface of the insertion plate 22 b) and a vertically extending portion (the vertically extending portion is on the side wall of the limiting block 24 b); referring to fig. 3, after the housing 21 and the cover 22 are inserted, all the positioning blocks 24a are located in the corresponding limiting grooves 23b, so that the connection between the housing 21 and the cover 22 is tighter and more stable.

Grooves can be arranged on the end surfaces of a plurality of side walls of the shell 21 or the cover 22, and the grooves on the end surfaces are communicated with each other to form a continuous positioning groove 23a; or, a plurality of spaced positioning grooves 23a are provided on the end surface of the side wall of the housing 21 or the cover 22, and are respectively used for being combined with one positioning block 24a in an inserting manner.

Similarly, the positioning blocks 24a may be a continuous bump structure, and after the housing 21 and the cover 22 are assembled, the positioning blocks 24a are inserted into all the positioning grooves 23a; alternatively, the cover 22 may be provided with a plurality of positioning blocks 24a on the bottom surface contacting the housing 21, and each positioning block 24a may be inserted into a positioning groove 23a at an appropriate position when assembled.

As can be seen from the above, in an embodiment, the depth of the limiting groove 23b is greater than the height of the limiting block 24b, so that after the housing 21 and the cover 22 are assembled, a space is provided between the bottom of the limiting groove 23b and the limiting block 24b, and the space is used for extending the power supply electrode.

Further, in the embodiment shown in fig. 5, a positioning block 24a is not disposed on the bottom surface of the limiting block 24b close to the housing 21, so as to reduce the height of the limiting block 24b and form an extending interval for the power supply electrode.

Optionally, the bottom of the housing 21 away from the cover 22 is provided with a mounting block 26, and the mounting block 26 is provided with a connecting hole 27; the coupling holes 27 are used for mounting fasteners to fix the housing 20.

In the embodiment shown in fig. 1 to 4, the bottom of the housing 21 is a bottom plate 21a, the two sides of the bottom plate 21a are provided with mounting blocks 26, and a connecting hole 27 is formed at a corner of each mounting block 26. When the capacitor is mounted, the bottom plate 21a is placed on the mounting surface so that the mounting block 26 contacts the mounting surface and the connection hole 27 is aligned with the mounting hole on the mounting surface, and a fastener is inserted into the connection hole 27 and the mounting hole and fixed to the connection hole 27 and the mounting hole, thereby fixing the capacitor to the mounting surface.

Wherein the coupling hole 27 may be a threaded hole and the fastener may be a bolt. The connecting holes 27 may be pin holes, and the fastening members may be dowel pins. The present application does not limit the specific configuration of the coupling holes 27 and the fasteners as long as the housing 20 can be fixed at a desired mounting location.

In other embodiments, one mounting block 26 may be disposed on one side of the bottom of the housing 21, or at least one mounting block 26 may be disposed on multiple sides of the bottom of the housing 21. The present application does not limit the number and the arrangement position of the mounting blocks 26.

Optionally, a reinforcing block 29 is provided between the mounting block 26 and the cover 22.

In the embodiment shown in fig. 1-4, the reinforcing block 29 is configured as a right triangle, with one leg of the reinforcing block 29 abutting the outer side of the housing 21 and the other leg abutting the upper surface of the mounting block 26.

By arranging the reinforcing block 29, the rigidity of the shell 21 can be enhanced, and the shell 21 is prevented from deforming under stress; and also can play a role in preventing the bottom plate 21a and the mounting block 26 from being separated or displaced relatively.

In other embodiments, the reinforcing block 29 may be a slant block having one end abutting the outer side surface of the housing 21 and the other end abutting the upper surface of the mounting block 26. The present application does not limit the specific configuration of the reinforcing block 29.

Optionally, the capacitor for a vehicle provided by the present application further comprises a bracket; the support includes: a base 31 for holding the housing 20; two shelf plates 32 arranged on the base 31 at intervals; a pressure plate 33, which is arranged on the two frame plates 32 opposite to the base 31; when the stand is positioned on the housing 20, the housing 20 is positioned between the base 31, the shelf 32, and the pressure plate 33.

The bracket can further protect the outer case 20 and the capacitor core pack 10 provided in the outer case 20, and can also stabilize the installation of the entire capacitor.

Referring specifically to fig. 6, in the illustrated embodiment, the base 31 and the shelf 32 are fastened together, and the shelf 32 and the pressure plate 33 are fastened together by bolts. Specifically, two sides of the base 31 are respectively provided with a plurality of threaded holes, and the bottom surface of the frame plate 32, which is used for contacting the base 21, is also provided with a plurality of threaded holes; when the shelf plate 32 is mounted, the screw holes in the shelf plate 32 are opposite to the screw holes in the base 31, and the base 31 and the shelf plate 32 are fastened by bolting bolts into the screw holes. Similarly, two ends of the pressure plate 33 are respectively provided with a threaded hole, and the top surface of the frame plate 32, which is used for contacting the pressure plate 33, is also provided with a threaded hole; when the pressing plate 33 is mounted, the frame plate 32 is opposite to the threaded hole of the pressing plate 33, and the pressing plate 33 and the frame plate 32 can be fastened by bolting bolts into the threaded hole. Further, in order to prevent the head of the bolt from protruding outside and affecting the installation of the bracket or generating potential safety hazards, the threaded holes in the base 31 and the pressure plate 33 can be set to be countersunk holes.

With reference to fig. 6, in the illustrated embodiment, four pressing plates 33 are disposed on the frame plate 32, and the four pressing plates 33 are spaced from each other, so that not only materials are saved, but also the pressure of the bracket to the housing 20 is increased, and the heat dissipation space is increased, and the bracket is convenient to take, place and observe.

Optionally, the bottom surface of the base 31 facing away from the pressure plate 33 is provided with a weight-reducing slot. Therefore, materials can be saved, the weight of the support is reduced, and the structural stability of the whole support can be improved.

Optionally, the support further comprises an auxiliary block 34 for holding the electrode.

In the embodiment shown in fig. 5 and 6, the bracket includes two sets of auxiliary blocks 34, and the two sets of auxiliary blocks 34 are provided with slots for receiving electrodes; meanwhile, one of the shelf boards 32 is provided with a receiving groove 32a for receiving the electrode. At this time, the capacitor core pack 10 provided in the case 20 includes three sets of electrodes. The three groups of electrodes can be respectively arranged in the two clamping grooves and the bearing groove 32 a; or, a plurality of slots are arranged on one auxiliary connecting block 34, and a plurality of electrodes are arranged in the slots; alternatively, one frame plate 32 is provided with a plurality of receiving grooves 32a, and the receiving grooves 32a are respectively provided with a plurality of electrodes (for example, in the embodiment shown in fig. 6, three receiving grooves 32a are provided on one frame plate 32, and the three receiving grooves 32a respectively receive one electrode of three different sets of electrodes).

It should be explained that the electrodes are protruded out of the through holes and the housing 20, and at this time, the protruding portions of the electrodes are suspended, and the suspended electrodes are easily damaged or displaced, which is very easy to cause a safety problem. Therefore, the auxiliary connecting block 34 is arranged to support the electrode, the electrode can be effectively protected, the position of the electrode can be limited, the electrode is conveniently connected with a circuit, the connection relation is clear, and subsequent maintenance and inspection are facilitated.

Optionally, a threaded hole is provided on the auxiliary joint block 34. At the moment, the electrode is also provided with a threaded hole or a through hole; after the electrode is arranged on the auxiliary connecting block 34, the hole on the electrode is opposite to the threaded hole on the auxiliary connecting block 34, and the screw is screwed in, so that the electrode can be fixed on the auxiliary connecting block 34, and the position stability and the use safety of the electrode can be further ensured.

The above examples only express several embodiments of the present application, and the description thereof is more specific and detailed, but not construed as limiting the claims. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the concept of the present application, which falls within the scope of protection of the present application. Therefore, the protection scope of the present patent application shall be subject to the appended claims.

Claims (10)

1. A capacitor for a vehicle, comprising:

the capacitor core group (10), the capacitor core group (10) comprises a capacitor core, a busbar and electrodes;

a case (20) for housing the capacitor core pack (10);

the shell (20) comprises a shell body (21) and a cover body (22), wherein one of the shell body (21) and the cover body (22) is provided with a clamping groove (23), and the other of the shell body (21) and the cover body (22) is provided with a clamping block (24), so that the clamping block (24) is inserted into the clamping groove (23), and the shell body (21) and the cover body (22) can be assembled;

the housing (20) having a perforation therein through which the electrode can protrude;

and a convex edge (25) is arranged in the shell (20).

2. The vehicular capacitor according to claim 1, characterized in that one side of the case (20) is opened, through which an insulator can be poured into the case (20);

part of the opening is formed on the shell (21), and the other part of the opening is formed on the cover body (22).

3. Capacitor for vehicles according to claim 2, characterized in that the protruding edge (25) comprises an inlet edge (25 a), the inlet edge (25 a) being arranged around the opening;

part of the inlet edge (25 a) is arranged on the shell (21), and the other part of the inlet edge (25 a) is arranged on the cover body (22).

4. The vehicular capacitor according to claim 3, wherein the convex rib (25) further comprises a reinforcing rib (25 b), the reinforcing rib (25 b) being provided along an inner wall of the case body (21) and/or the cover body (22).

5. The vehicular capacitor according to claim 4, wherein at least one end of the reinforcing ridge (25 b) is connected to the inlet ridge (25 a).

6. The vehicular capacitor according to claim 1, wherein the card slot (23) comprises:

the positioning groove (23 a) is arranged on the end face of the side wall of the shell (21) or the cover body (22);

a limit groove (23 b), wherein part of the side wall of the shell (21) or the cover body (22) is inwards sunken to form the limit groove (23 b);

the cartridge (24) includes:

a positioning block (24 a) which is arranged on the end surface of the side wall of the cover body (22) or the shell (21) in a protruding mode and can be inserted into the positioning groove (23 a);

and a limiting block (24 b), wherein part of the cover body (22) or the side wall of the shell (21) protrudes outwards to form the limiting block (24 b), and the limiting block (24 b) can be inserted into the limiting groove (23 b).

7. The vehicle capacitor according to claim 1, wherein a mounting block (26) is arranged at the bottom of the shell (21) far away from the cover body (22), and a connecting hole (27) is arranged on the mounting block (26);

the connecting hole (27) is used for installing a fastener so as to fix the shell (20).

8. The vehicular capacitor according to claim 7, wherein a reinforcing block (29) is provided between the mounting block (26) and the cover body (22).

9. The vehicular capacitor according to any one of claims 1 to 8, further comprising a bracket, the bracket comprising:

-a base (31) for holding the housing (20);

two shelf plates (32) which are arranged on the base (31) at intervals;

the pressing plate (33) is arranged on the two frame plates (32) relative to the base (31);

when the bracket is used for arranging the shell (20), the shell (20) is positioned between the base (31), the frame plate (32) and the pressure plate (33).

10. Capacitor for vehicles according to claim 9, characterized in that the holder further comprises an auxiliary abutment (34) for holding the electrode protruding from the housing (20).

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