Capacitor and electric machine controller
The utility model relates to technical field of electronic components, in particular to a kind of capacitor.The utility model further relates to
A kind of electric machine controller including above-mentioned capacitor.
Capacitor is the electronic component largely used in electronic equipment, is widely used in blocking, coupling, bypass, filtering, tune
Humorous circuit, energy conversion, control circuit etc., wherein the electricity in new-energy automobile, as electric car kernel component
Machine controller requirement is also higher and higher, is usually embodied in higher volumetric power density and/or mass power density, higher work
Make environment temperature, capacitor influences the reliability of vehicle as the important component in electric machine controller.
The bus capacitor of traditional pure electric automobile using front installation, due to capacitor operating ambient temperature compared with
Height needs to be provided with radiating flow passage on the shell below the capacitor body of capacitor.In order to realize the fixation of capacitor body
Installation, as shown in Figure 1, the opposite sides of 01 plane extending direction of capacitor body is equipped with screw mounting plate 02, screw installation
Plate 02 is mounted on shell by screw.
However, needing to protrude setting screw mounting plate in capacitor body two sides, and then lead due to when installing capacitor
Send a telegraph that container overall volume is larger, so that the power density of capacitor is lower.
Therefore, the power density for how improving capacitor is those skilled in the art's technical problem urgently to be resolved.
Utility model content
The purpose of the utility model is to provide a kind of capacitor, the power density of the capacitor is improved.The utility model
Another object is to provide a kind of electric machine controller including above-mentioned capacitor.
To achieve the above object, the utility model provides a kind of capacitor, including shell and capacitor body, further includes peace
Mounted in the capacitor body bottom surface, and for the fastener with the cage connection.
Preferably, the fastener includes bottom fixed column and the inner thread piece that is embedded in the bottom fixed column, institute
Inner thread piece is stated by threaded fastener and the cage connection, the fixed column is connect with the capacitor body bottom surface.
Preferably, the fastener is multiple, and multiple fasteners are arranged symmetrically in the capacitor body bottom surface
Preferably, the shell includes enclosure body and the pedestal that connect with the outer cover body, and the pedestal is equipped with
For accommodating the deep gouge of the fastener, the deep gouge is corresponded with the fastener.
Preferably, the capacitor body is equipped with sealing ring with the shell place of abutting.
Preferably, the base upper surface is equipped with the limited step cooperated with the enclosure body.
Preferably, the capacitor body is an integral molding structure with the bottom fixed column.
It preferably, further include multiple radiating fins that the capacitor body bottom surface is set, each radiating fin
Successively equidistantly distributed.
Preferably, the bottom end of the radiating fin is located at the outer side of shell, and the shell is equipped with described for accommodating
The avoid holes of radiating fin.
A kind of electric machine controller, including capacitor, the capacitor are capacitor described in any of the above embodiments.
In the above-mentioned technical solutions, capacitor provided by the utility model includes shell, capacitor body and is mounted on electricity
Vessel bottom surface, and for the fastener with cage connection.In group capacitor, capacitor body is mounted on shell
It is interior, capacitor body and shell are fixed by fastener.
As can be seen from the above description, tight by being arranged in the bottom surface of capacitor body in capacitor provided by the present application
Firmware avoids being separately provided component in the epitaxial part of capacitor body plane, and then reduces capacitor overall volume, improves
The power density of capacitor.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is the embodiments of the present invention, for those of ordinary skill in the art, without creative efforts, also
Other attached drawings can be obtained according to the attached drawing of offer.
Fig. 1 is the structural schematic diagram of traditional capacitor；
Fig. 2 is the structural schematic diagram of capacitor provided by the utility model embodiment；
Fig. 3 is the cross-sectional view of electric device provided by the utility model embodiment.
Wherein in Fig. 1-3: 01- capacitor body, 02- screw mounting plate, 03- conduction extension；
1- capacitor, 11- conduction extension, the bottom 12- fixed column, 13- inner thread piece, 14- radiating fin, 15- electricity
Vessel, 2- shell, 21- avoid holes, 22- pedestal, 23- deep gouge, 24- sealing ring resettlement groove, 3- sealing ring, 4- screw threads for fastening
The core of the utility model is to provide a kind of capacitor, and the power density of the capacitor improves.The utility model
Another core is to provide a kind of electric machine controller including above-mentioned capacitor.
It is with reference to the accompanying drawing and real in order to make those skilled in the art more fully understand the technical solution of the utility model
Applying mode, the utility model is described in further detail.
Fig. 2 and Fig. 3 are please referred to, in a specific embodiment, the capacitor that the utility model specific embodiment provides
Including shell 2, capacitor body 15 and it is mounted on 15 bottom surface of capacitor body, and the fastener for connecting with shell 2, capacitor
Device ontology 15 is equipped with the conductive extension 11 connecting with IGBT, in order to reduce occupied space, it is preferable that capacitor body 15
Bottom is bonded with the bottom surface of shell 2.
In group capacitor, capacitor body 15 is mounted in shell 2, by fastener by capacitor body 15 with
Shell 2 is fixed.
As can be seen from the above description, in the capacitor provided by the application specific embodiment, by capacitor body
Fastener is arranged in 15 bottom surface, avoids that component is separately provided in the epitaxial part of 15 plane of capacitor body, wherein capacitor
15 plane of ontology is to improve on capacitor body 15 for installing the plane of components, and then reduction capacitor overall volume
The power density of capacitor.
Preferably, fastener includes bottom fixed column 12 and the inner thread piece being embedded in bottom fixed column 12 13, interior spiral shell
Line part 13 is connect by threaded fastener 4 with shell 2, accommodates inner thread piece 13 specifically, being equipped with inside bottom fixed column 12
Hollow structure.In order to improve processing efficiency, it is preferable that threaded fastener 4 is nut, excellent in order to extend the service life of fastener
Choosing, inner thread piece 13 are metal screw.
More preferably, as shown in Fig. 2, fastener be it is multiple, multiple fasteners are arranged symmetrically in 15 bottom of capacitor body
The opposite sides in face, specifically, fastener can be two, two fasteners are arranged symmetrically in opposite sides.For the company of raising
Connect stability, it is preferable that the every side of capacitor body 15 is all provided with there are two fastener.
Specifically, shell 2 includes enclosure body and the pedestal 22 connecting with outer cover body, pedestal 22 is equipped with for accommodating
The deep gouge 23 of fastener, deep gouge 23 are corresponded with fastener.When installation, bottom fixed column 12 protrudes into deep gouge 23, and screw thread is tight
Firmware 4 screws in inner thread piece 13 and is fixed on capacitor body 15 on the bottom of shell 2, and the head embedment of threaded fastener 4 is outer
In portion's deep gouge 23.By the way that deep gouge 23 is arranged, integrated connection stability is improved.
In order to improve leakproofness, it is preferable that capacitor body 15 is equipped with sealing ring 3 with 2 place of abutting of shell, it is preferable that sealing ring 3
The case where being arranged in sealing ring resettlement groove 24, external substance avoided to damage sealing ring 3.
In order to further increase leakproofness, as shown in Figure 3, it is preferable that 22 upper surface of pedestal, which is equipped with, to be cooperated with enclosure body
Limited step specifically, limited step can be annular setting, while playing the purpose of support and control device ontology, effectively mentions
The high overall stability of controller.
For the ease of being powered on container, it is preferable that capacitor body 15 is an integral molding structure with bottom fixed column 12.
On the basis of above-mentioned each scheme, it is preferable that the capacitor further includes 15 bottom surface of capacitor body is arranged in multiple
Radiating fin 14, each radiating fin 14 successively equidistantly distributed.In order to reduce difficulty of processing, processing efficiency is improved, it is preferable that dissipate
Hot fin 14 is an integral molding structure with capacitor body 15.
In order to improve heat dissipation effect, it is preferable that the bottom end of radiating fin 14 is located at 2 outside of shell, and shell 2 is equipped with and is used for
The avoid holes 21 of radiating fin 14 are accommodated, specifically, avoid holes 21 are arranged on pedestal 22, radiating fin 14 passes through pedestal 22
Avoid holes 21 and outside air on bottom surface directly contact.
When capacitor is started to work, temperature is begun to ramp up, from 15 inner core of capacitor body to external cooling fin
14 form a path of low thermal resistance, and most of heat carries out heat exchange by radiating fin 14 and outside air, to make electricity
Container has reached reliable operating temperature, and will not because self heat distribute bring temperature inside shell 2 further on
It rises, substantially reduces the operating temperature of capacitor, while 2 interior environment temperature of shell can be effectively reduced.
A kind of electric machine controller provided by the present application, including capacitor 1, wherein capacitor 1 is above-mentioned capacitor 1, wherein
The specific effect of capacitor 1 is described above, and electric machine controller includes above-mentioned capacitor 1, is equally had with above-mentioned capacitor 1
Effect no longer repeats one by one herein.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments can be realized professional and technical personnel in the field or using originally practical new
Type.Various modifications to these embodiments will be readily apparent to those skilled in the art, and determine herein
The General Principle of justice can be realized in other embodiments without departing from the spirit or scope of the present utility model.Cause
This, the present invention will not be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The widest scope consistent with features of novelty.