CN115188587A

CN115188587A - Capacitor and electric automobile

Info

Publication number: CN115188587A
Application number: CN202210973696.0A
Authority: CN
Inventors: 肖洋; 江明; 周宣; 葛涛; 谭维耿
Original assignee: Shanghai Yingheng Electronic Co ltd
Current assignee: Shanghai Yingheng Electronic Co ltd
Priority date: 2022-08-15
Filing date: 2022-08-15
Publication date: 2022-10-14

Abstract

The invention discloses a capacitor and an electric automobile. The capacitor includes: a thermally conductive substrate; the capacitor core group is positioned on one side of the heat conducting substrate and comprises a plurality of capacitor cores which are arranged in an array manner, at least one first electrode is arranged on the first surface of each capacitor core, at least one second electrode is arranged on the second surface of each capacitor core, and the first electrodes and the second electrodes are arranged correspondingly and have opposite polarities; the electrode arrangement modes of the capacitor cores positioned in the same row are the same; the first surfaces or the second surfaces of the capacitor cores of adjacent rows are adjacently arranged; at least part of the first copper bars are respectively overlapped with the capacitor cores in the adjacent rows along the first direction; the heat conduction direction of first copper bar is crossing with the electrode direction of electric capacity core, sets up first copper bar through keeping away from heat conduction substrate one side at the electric capacity core, effectively releases the heat that produces in the electric capacity core work engineering, improves the heat-sinking capability of electric capacity core, and then guarantees the normal work of electric capacity core.

Description

Capacitor and electric automobile

Technical Field

The invention relates to the technical field of electronic equipment, in particular to a capacitor and an electric automobile.

Background

In the beginning of the century, along with the development, popularization and popularization of new energy electric automobiles, one of main components in a motor driver and the structural design of a direct-current voltage support capacitor are attracted attention. As the driving power of the new energy electric vehicle is continuously increased, the current voltage of the inverter is also continuously increased, and thus the ripple current that the capacitor is required to be able to withstand is also continuously increased. During operation of the capacitor, the loss of the capacitor is proportional to the square of the magnitude of the current flowing through the capacitor, and the heat generation of the capacitor increases in accordance with the increase in ripple current. Because the temperature that the temperature-resistant restriction capacitor of material can bear has the restriction, need be through heat dissipation structure with temperature control below certain temperature. Therefore, the heat dissipation structure is provided, and the insulation problem can be reasonably solved while the heat dissipation of the copper bars is utilized.

Disclosure of Invention

The invention provides a capacitor and an electric automobile, which are used for improving the heat dissipation capacity of the capacitor and meeting the application requirements of the capacitor on large current and high power.

In a first aspect, there is provided according to the invention a capacitor comprising:

a thermally conductive substrate;

the capacitor core group is positioned on one side of the heat conducting substrate and comprises a plurality of capacitor cores which are arranged in an array mode, the capacitor cores comprise a first surface and a second surface which are oppositely arranged, at least one first electrode is arranged on the first surface, at least one second electrode is arranged on the second surface, and the first electrode and the second electrode are correspondingly arranged and have opposite polarities; the electrode arrangement modes of the capacitor cores positioned on the same row are the same; the electrode arrangement modes of the capacitor cores positioned in the same row are the same; the first surfaces of the capacitor cores of adjacent rows are disposed adjacent to one another, or the second surfaces of the capacitor cores of adjacent rows are disposed adjacent to one another;

the first copper bar is positioned on one side of the capacitor core, which is far away from the heat-conducting substrate, and at least part of the first copper bar is respectively overlapped with the capacitor cores in the adjacent rows along the first direction; the heat conduction direction of the first copper bar is intersected with the electrode direction of the capacitor core;

the first direction is a direction along the thermally conductive substrate that points perpendicularly to the capacitive core.

Optionally, the capacitor further includes a second copper bar located between the thermally conductive substrate and the capacitor core.

Optionally, along the first direction, the second copper bar has set gradually first sub-copper bar, insulating layer and second sub-copper bar, first sub-copper bar with the polarity of second sub-copper bar is opposite, second sub-copper bar with the polarity of first copper bar is the same and is connected.

Optionally, at least two first alignment structures are arranged on the first copper bar, at least two second alignment structures are arranged on the second copper bar, and the first alignment structures and the second alignment structures are in alignment clamping connection.

Optionally, when the first electrode and the first sub copper bar have the same polarity, the second electrode and the second sub copper bar have the same polarity, the first electrode is electrically connected to the first sub copper bar through a first via hole, and the second electrode is electrically connected to the second sub copper bar through a second via hole;

or when the first electrode is the same as the second sub copper bar in polarity, the second electrode is the same as the first sub copper bar in polarity, the first electrode is electrically connected with the second sub copper bar through a third via hole, and the second electrode is electrically connected with the first sub copper bar through a fourth via hole.

Optionally, the capacitor core group includes at least N rows of capacitor core rows, and in the first direction, the first copper bar overlaps with the first electrode of the N-1 th capacitor core row and the first electrode of the N-1 th capacitor core row, the first copper bar does not overlap with the projection of the second electrode of the N-1 th capacitor core row and the projection of the first copper bar does not overlap with the projection of the second electrode of the N-1 th capacitor core row, respectively; or, the first copper bar is respectively overlapped with the second electrode of the N-1 th row of capacitor core row and the second electrode of the N-1 th row of capacitor core row, the first copper bar is respectively not overlapped with the projection of the first electrode of the N-1 th row of capacitor core row and the projection of the first copper bar is not overlapped with the projection of the first electrode of the N-1 th row of capacitor core row;

wherein N is a positive integer greater than or equal to 2.

Optionally, the heat conduction direction of the first copper bar is perpendicular to the electrode direction of the capacitor core.

Optionally, the capacitor further includes a case, and a surface of the heat conductive substrate on a side away from the capacitor core in the first direction is at least partially in contact with the case.

Optionally, at least two third alignment structures are further disposed on one side of the case close to the capacitor core, and the third alignment structures are in contact with the heat conducting substrate.

In a second aspect, an embodiment of the present invention further provides an electric vehicle, including the capacitor in any one of the first aspect.

The technical scheme of the embodiment of the invention provides a capacitor, which comprises: a thermally conductive substrate; the capacitor core group is positioned on one side of the heat conducting substrate and comprises a plurality of capacitor cores which are arranged in an array manner, the capacitor cores comprise a first surface and a second surface which are oppositely arranged, at least one first electrode is arranged on the first surface, at least one second electrode is arranged on the second surface, and the first electrode and the second electrode are correspondingly arranged and have opposite polarities; the electrode arrangement modes of the capacitor cores positioned in the same row are the same; the electrode arrangement modes of the capacitor cores positioned in the same row are the same; the first surfaces of the capacitor cores of adjacent rows are adjacently arranged, or the second surfaces of the capacitor cores of adjacent rows are adjacently arranged; at least part of the first copper bars are respectively overlapped with the capacitor cores in the adjacent rows along the first direction; the heat conduction direction of first copper bar is crossing with the electrode direction of electric capacity core, sets up first copper bar through keeping away from heat conduction substrate one side at the electric capacity core, with the help of the heat of the production of first copper bar release electric capacity core work engineering, improves the heat-sinking capability of electric capacity core, and then guarantees the normal work of electric capacity core.

It should be understood that the statements in this section are not intended to identify key or critical features of the embodiments of the present invention, nor are they intended to limit the scope of the invention. Other features of the present invention will become apparent from the following description.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the description below are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a capacitor according to an embodiment of the present invention;

FIG. 2 isbase:Sub>A schematic cross-sectional view taken along line A-A' of FIG. 1;

fig. 3 is a schematic structural diagram of another capacitor according to an embodiment of the present invention;

FIG. 4 is a schematic cross-sectional view taken along line B-B' of FIG. 3;

fig. 5 is a schematic structural diagram of an electric vehicle according to an embodiment of the present invention.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in other sequences than those illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

Fig. 1 isbase:Sub>A schematic structural diagram ofbase:Sub>A capacitor according to an embodiment of the present invention, fig. 2 isbase:Sub>A schematic structural diagram ofbase:Sub>A cross section taken alongbase:Sub>A section linebase:Sub>A-base:Sub>A 'in fig. 1, fig. 3 isbase:Sub>A schematic structural diagram of another capacitor according to an embodiment of the present invention, and fig. 4 isbase:Sub>A schematic structural diagram ofbase:Sub>A cross section taken alongbase:Sub>A section line B-B' in fig. 3, as shown in fig. 1, fig. 2, fig. 3, and fig. 4, the capacitor 100 includes: a heat conductive substrate 101; the capacitor core group 102 is positioned on one side of the heat conducting substrate 101, the capacitor core group 102 comprises a plurality of capacitor cores 103 arranged in an array, the capacitor cores 103 comprise a first surface 104 and a second surface 105 which are oppositely arranged, the first surface 104 is provided with at least one first electrode 106, the second surface 105 is provided with at least one second electrode 107, and the first electrode 106 and the second electrode 107 are correspondingly arranged and have opposite polarities; the electrode arrangement of the capacitor cores 103 located in the same row is the same; the capacitor cores 103 in the same row have the same electrode arrangement mode; the first surfaces 104 of the capacitor cores 103 of adjacent rows are disposed adjacent to each other, or the second surfaces 105 of the capacitor cores 103 of adjacent rows are disposed adjacent to each other; the first copper bar 108 is positioned on one side of the capacitor core 103, which is far away from the heat conducting substrate 101, and at least part of the first copper bar 108 is respectively overlapped with the capacitor cores 103 in adjacent rows along a first direction (such as an X direction shown in the figure); the heat conducting direction (Y direction in the figure) of the first copper bar 108 intersects with the electrode direction (Z direction in the figure) of the capacitor core 103, wherein the first direction X is a direction pointing to the capacitor core 103 vertically along the heat conducting substrate 101.

Wherein, the heat conduction substrate 101 can conduct the heat of electric capacity core 103, plays certain radiating effect, can also play insulating effect simultaneously, guarantees electric capacity core 103's normal work, avoids taking place the short circuit phenomenon. The capacitor 100 includes a capacitor core group 102, the capacitor core group 102 includes a plurality of capacitor cores 103 arranged in an array, the capacitor core group 102 is exemplarily shown in an arrangement manner that the capacitor cores are 2 rows and 3 columns, the electrode arrangement manner of each row of the capacitor cores 103 is the same, that is, the first surface 104 and the first electrode 106 are located on the same side, and the second surface 105 and the second electrode 107 are located on the same side, as shown in fig. 1 and fig. 2, the first surface 104 of the first row of the capacitor cores 103 and the first surface 104 of the second row of the capacitor cores 103 are adjacently disposed, that is, the first electrode 106 of the first row of the capacitor cores 103 and the first electrode 106 of the second row of the capacitor cores 103 are adjacently disposed, at this time, along the first direction X, the first copper bar 108 overlaps with the first electrode 106 of the first row of the capacitor cores 103 and the first electrode 106 of the second row of the capacitor cores 103 respectively, the polarity of the first copper bar 108 is the same as the polarity of the first electrode 106, thereby ensuring that heat conduction is performed on the capacitor cores 103 in the first row of the capacitor cores 103 and the second row of the capacitor cores 103. Similarly, as shown in fig. 3 and fig. 4, the second surface 105 of the first row of capacitor cores 103 and the second surface 105 of the second row of capacitor cores 103 are disposed adjacently, that is, the second electrodes 107 of the first row of capacitor cores 103 and the second electrodes 107 of the second row of capacitor cores 103 are disposed adjacently, at this time, along the first direction X, the first copper bar 108 overlaps the second electrodes 107 of the first row of capacitor cores 103 and the second electrodes 107 of the second row of capacitor cores 103, and the polarity of the first copper bar 108 is the same as the polarity of the second electrodes 107, thereby ensuring that heat of the capacitor cores 103 in the first row of capacitor cores 103 and the second row of capacitor cores 103 is conducted. Meanwhile, in order to ensure that the first copper bar 108 and the capacitor core 103 both work normally, the heat conduction direction of the first copper bar 108 is intersected with the electrode direction of the capacitor core 103, the heat conduction direction of the first copper bar 108 is parallel to the row direction of the capacitor core 103, the electrode direction of the capacitor core 103 can be the direction in which the first electrode 106 points to the second electrode 107 or the direction in which the second electrode 107 points to the first electrode 106, so that the short circuit phenomenon between the first copper bar 108 and the capacitor core 103 is effectively avoided, the normal work of the capacitor 100 is affected, the capacitor 100 is further ensured to meet the requirement of large ripple current, the heat dissipation capacity of the capacitor 100 is ensured, and the bearing capacity of the capacitor 100 is improved.

According to the embodiment of the invention, the capacitor cores comprise the capacitor core group, the capacitor core group comprises a plurality of capacitor cores which are arranged in an array manner, and the electrode arrangement modes of the capacitor cores in the same row are the same; the electrode arrangement modes of the capacitor cores positioned in the same row are the same; the first surfaces of the capacitor cores in adjacent rows are adjacently arranged, or the second surfaces of the capacitor cores in adjacent rows are adjacently arranged, and meanwhile, the first copper bars are arranged on one side, away from the heat conducting substrate 101, of the capacitor cores, heat generated in the working engineering of the capacitor cores is released by means of the first copper bars, the heat dissipation capacity of the capacitor cores is improved, and then the normal work of the capacitor cores is guaranteed.

Optionally, with continued reference to fig. 1, 2, 3, and 4, the capacitor 100 further includes a second copper bar 109 located between the thermally conductive substrate 101 and the capacitive core 103.

Wherein, still be provided with the second copper bar 109 that is located between heat conduction substrate 101 and the electric capacity core 103 in the condenser 100, the heat that electric capacity core 103 during operation produced also can be taken away to second copper bar 109, and then the heat is through second copper bar 109 conduction heat substrate 101, dispel the heat through heat conduction substrate 101, and then combine the setting of first copper bar 108, guarantee that the heat of electric capacity core 103 takes away through first copper bar 108 and second copper bar 109 respectively, with the temperature control of electric capacity core 103 in the preset within range that the material bore, guarantee the normal work of electric capacity core 103. Simultaneously with second copper bar 109 setting in the below of electric capacity core 103, and be close to casing one side, can avoid second copper bar 109 self to generate heat or cause the thermal influence to electric capacity core 103 when the heat of the other heat sources of second copper bar 109 conduction, and then influence electric capacity core 103's normal use.

Optionally, with continued reference to fig. 2 and fig. 4, along the first direction X, the second copper bar 109 is sequentially provided with a first sub-copper bar 1091, an insulating layer 1092, and a second sub-copper bar 1093, the polarities of the first sub-copper bar 1091 and the second sub-copper bar 1093 are opposite, and the polarity of the second sub-copper bar 1093 is the same as and connected to the polarity of the first copper bar 108.

The second copper bar 109 includes a first sub copper bar 1091 and a second sub copper bar 1093, the polarities of the first sub copper bar 1091 and the second sub copper bar 1093 are opposite, that is, the first sub copper bar 1091 and the second sub copper bar 1093 are respectively an anode copper bar or a cathode copper bar, which can be selected according to actual design requirements, and the embodiment of the present invention is not limited in detail. In order to avoid the short circuit phenomenon between the first sub copper bar 1091 and the second sub copper bar 1093 due to different polarities, an insulating layer 1092 is usually disposed between the first sub copper bar 1091 and the second sub copper bar 1093 to ensure the normal operation of the second copper bar 109. The second sub-copper bar 1093 is located the capacitor core 103 and is close to the heat conducting substrate 101, and the first copper bar 108 can be the same with the polarity of the second sub-copper bar 1093, so that the first copper bar 108 and the second sub-copper bar 1093 are in contact with each other and connected, and the heat conducted on the first copper bar 108 can be conducted to the heat conducting substrate 101 through the second sub-copper bar 1093, thereby ensuring the heat dissipation effect of the capacitor core 103.

Optionally, with continuing reference to fig. 1, fig. 2, fig. 3, and fig. 4, at least two first alignment structures 110 are disposed on the first copper bar 108, at least two second alignment structures 111 are disposed on the second copper bar 109, and the first alignment structures 110 and the second alignment structures 111 are arranged in an alignment clamping manner.

Wherein, because the second sub-copper bar 1093 is the same as and connected to the polarity of the first copper bar 108, in order to ensure the alignment connection effect of the first copper bar 108 and the second sub-copper bar 1093, the first alignment structure 110 can be disposed on the first copper bar 108, the second alignment structure 111 can be disposed on the second copper bar 109 correspondingly, that is, the second alignment structure 111 is disposed on the second sub-copper bar 1093, the first alignment structure 110 and the second alignment structure 111 are disposed correspondingly, the exemplary illustration shows that the first alignment structure 110 and the second alignment structure 111 are both disposed as two examples, the first alignment structure 110 can be a convex structure, and the second alignment structure 111 can be a concave structure, so that along the first direction X, the first alignment structure 110 and the second alignment structure 111 can be clamped in an alignment manner, thereby ensuring the connection effect of the first copper bar 108 and the second sub-copper bar 1093, and further ensuring the heat dissipation effect of the capacitor core 103.

Optionally, when the polarity of the first electrode 106 is the same as that of the first sub copper bar 1091, the polarity of the second electrode 107 is the same as that of the second sub copper bar 1093, the first electrode 106 is electrically connected to the first sub copper bar 1091 through a first via hole, and the second electrode 107 is electrically connected to the second sub copper bar 1093 through a second via hole;

or, when the first electrode 106 and the second sub copper bar 1093 have the same polarity, the second electrode 107 and the first sub copper bar 1091 have the same polarity, the first electrode 106 and the second sub copper bar 1093 are electrically connected through a third via, and the second electrode 107 and the first sub copper bar 1091 are electrically connected through a fourth via.

The capacitor core group 102 includes a plurality of capacitor cores 103, the first electrodes 106 and the second electrodes 107 of the plurality of capacitor cores 103 are respectively and correspondingly connected with the first sub copper bar 1091 and the second sub copper bar 1093 in the second copper bar 109, when the first electrodes 106 in the capacitor cores 103 have the same polarity as the first sub copper bar 1091, the second electrodes 107 in the capacitor cores 103 have the same polarity as the second sub copper bar 1093, because the first sub copper bar 1091 is located on one side of the second sub copper bar 1093 away from the capacitor core 103, the first electrodes 106 need to be electrically connected with the first sub copper bar 1091 through the first via holes 10, the second electrodes 107 need to be electrically connected with the second sub copper bar 1093 through second via holes (not shown), and the aperture size of the first via holes 10 is smaller than that of the second via holes at this time, so as to ensure that the first electrodes 106 are connected with the first sub copper bar 1091, and will not contact with the second sub copper bar 1093, thereby avoiding short circuit; similarly, when the polarity of the first electrode 106 of the capacitor core 103 is the same as that of the second sub copper bar 1093, the polarity of the second electrode 107 of the capacitor core 103 is the same as that of the first sub copper bar 1091, because the second sub copper bar 1093 is located on the side of the first sub copper bar 1091 close to the capacitor core 103, at this time, the first electrode 106 of the capacitor core 103 needs to be electrically connected to the second sub copper bar 1093 through a third via hole (not shown in the drawings), the second electrode 107 of the capacitor core 103 is electrically connected to the first sub copper bar 1091 through a fourth via hole 11, the aperture size of the third via hole is larger than that of the fourth via hole 11, it is ensured that the second electrode 107 is connected to the first sub copper bar 1091, and cannot contact with the second sub copper bar 1093, thereby avoiding a short circuit phenomenon and ensuring normal use of the capacitor 100.

Optionally, with continued reference to fig. 1 and fig. 3, the capacitive core group 102 includes at least N rows of capacitive core rows 112, along the first direction X, the first copper bar 108 overlaps with the first electrodes 106 of the N-1 th row of capacitive cores 112 and the first electrodes 106 of the N-1 th row of capacitive core rows 112 respectively, the projections of the first copper bar 108 and the second electrodes 107 of the N-1 th row of capacitive core rows 112 respectively do not overlap, and the projections of the first copper bar 108 and the second electrodes 107 of the N-1 th row of capacitive core rows 112 do not overlap; or, the first copper bar 108 is respectively overlapped with the second electrode 107 of the N-1 th row of capacitor core row 112 and the second electrode 107 of the N-1 th row of capacitor core row 112, the first copper bar 108 is respectively not overlapped with the projection of the first electrode 106 of the N-1 th row of capacitor core row 112 and the projection of the first copper bar 108 is not overlapped with the projection of the first electrode 106 of the N-1 th row of capacitor core row 112; wherein N is a positive integer greater than or equal to 2.

As shown in fig. 1, an exemplary capacitor core group 102 includes six capacitor cores arranged in an array, including two rows of capacitor core rows 112 and three capacitor core columns, the first copper bar 108 is disposed between adjacent capacitor core rows 112, and along a first direction X, the first copper bar 108 is at least partially overlapped with the first capacitor core rows 1121 and the second capacitor core rows 1122, when the first electrodes 106 in the adjacent capacitor core rows 112 are disposed adjacently, the first copper bar 108 is respectively overlapped with the first electrodes 106 in the first capacitor core rows 1121 and the second capacitor core rows 1122, and the polarities of the first copper bar 108 and the first electrodes 106 are the same at this time, meanwhile, in order to avoid the difference in polarity between the first copper bar 108 and the second electrodes 107, the short circuit phenomenon occurs, it is necessary that the first copper bar 108 is not overlapped with the second electrodes 107 in the first capacitor core rows 1121 and the second capacitor core rows 1122, that the first copper bar 108 is not connected to the second electrodes 107, so as to keep a predetermined distance between the first copper bar 108 and the second electrodes 107, and ensure heat conduction between the first capacitor core rows 103. Similarly, as shown in fig. 3, when the second electrodes 107 in the first capacitor core row 1121 and the second capacitor core row 1122 are adjacently disposed, the first copper bar 108 is overlapped with the second electrodes 107 in the first capacitor core row 1121 and the second capacitor core row 1122, the polarities of the first copper bar 108 and the second electrode 107 at this time are the same, the polarity of the second sub-copper bar 1093 connected to the first copper bar 108 is also the same, and meanwhile, in order to avoid the short circuit phenomenon caused by the difference in polarities between the first copper bar 108 and the first electrode 106, it is necessary that the first copper bar 108 is not overlapped with the first electrodes 106 of the first capacitor core row 1121 and the second capacitor core row 1122, that is, the first copper bar 108 is not connected to the first electrode 106, so as to maintain a predetermined distance, achieve insulation between the first copper bar 108 and the first electrode 106, and ensure heat conduction of the capacitor cores 103.

Optionally, the heat conduction direction Y of the first copper bar 108 is perpendicular to the electrode direction Z of the capacitor core 103.

Wherein, in order to guarantee the thermal conduction effect of first copper bar 108 to electric capacity core 103, the heat conduction direction of first copper bar 108 is perpendicular to the electrode direction of first electrode 106 and second electrode 107 in electric capacity core 103, guarantee electric capacity core 103's normal work, guarantee the heat conduction effect of first copper bar 108 simultaneously, avoid when the heat conduction direction Y of first copper bar 108 and electric capacity core 103's electrode direction Z parallel arrangement, first copper bar 108 probably can contact first electrode 106 and second electrode 107 simultaneously, arouse the short circuit phenomenon, make electric capacity core 103 normally work.

Optionally, with continued reference to fig. 1, 2, 3, and 4, the capacitor 100 further includes a case 113, and a surface of the thermally conductive substrate 101 on a side away from the capacitive core 103 along the first direction X is at least partially in contact with the case 113.

Wherein, casing 113 is arranged in playing certain guard action to electric capacity core 103 in the condenser 100, and casing 113's temperature is lower simultaneously, can play certain radiating effect as the cold source, and casing 113 includes bottom surface and three side at least, but first direction X, and the bottom surface of casing 113 and the surface contact of electric capacity core 103 one side is kept away from to heat conduction substrate 101 for the heat through heat conduction substrate 101 transmission is led away through casing 113, guarantees the radiating effect. Because the case 113 is usually made of metal material, the positive electrode or the negative electrode in the capacitor core 103, the first copper bar 108 and the second copper bar 109 are not in direct contact with the case 113, so as to ensure the normal operation of the capacitor 100.

Optionally, with continued reference to fig. 1, fig. 2, fig. 3, and fig. 4, at least two third alignment structures 114 are further disposed on one side of the chassis 113 close to the capacitor core 103, and the third alignment structures 114 are in contact with the heat conductive substrate 101.

At least two third alignment structures 114 are arranged on one side of the case 113 close to the capacitor core 103, two third alignment structures 114 are exemplarily arranged in the drawing, the third alignment structures 114 are prepared and displayed after the case 113 is formed, the third alignment structures 114 can be integrally formed with the case 113, or the third alignment structures 114 can be prepared again after the case 113 is formed, the material of the third alignment structures 114 can be the same as that of the case, the material of the third alignment structures 114 can also be different from that of the case 113, and the material selection of the specific third alignment structures 114 can be selected according to actual design requirements, so that the heat conduction effect is ensured. The third alignment structure 114 is used for contacting the heat conducting substrate 101, so as to fix the heat conducting substrate 101, thereby ensuring the stability of the whole structure of the capacitor 100.

Fig. 5 is a schematic structural diagram of an electric vehicle according to an embodiment of the present invention, and as shown in fig. 5, an electric vehicle 200 includes the capacitor 100 according to any one of the embodiments.

It should be noted that, since the electric vehicle 200 provided in this embodiment includes any of the capacitors 100 provided in the embodiments of the present invention, which have the same or corresponding beneficial effects, details are not repeated herein.

The above-described embodiments should not be construed as limiting the scope of the invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions may be made, depending on design requirements and other factors. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A capacitor, comprising:

a thermally conductive substrate;

the capacitor core group is positioned on one side of the heat conducting substrate and comprises a plurality of capacitor cores which are arranged in an array mode, the capacitor cores comprise a first surface and a second surface which are oppositely arranged, at least one first electrode is arranged on the first surface, at least one second electrode is arranged on the second surface, and the first electrode and the second electrode are correspondingly arranged and have opposite polarities; the electrode arrangement modes of the capacitor cores positioned in the same row are the same; the first surfaces of the capacitor cores of adjacent rows are disposed adjacent, or the second surfaces of the capacitor cores of adjacent rows are disposed adjacent;

the first copper bar is positioned on one side of the capacitor core, which is far away from the heat conducting substrate, and at least part of the first copper bar is respectively overlapped with the capacitor cores in the adjacent rows along a first direction; the heat conduction direction of the first copper bar is crossed with the electrode direction of the capacitor core,

2. The capacitor of claim 1 further comprising a second copper bar between the thermally conductive substrate and the capacitive core.

3. The capacitor according to claim 2, wherein the second copper bar is sequentially provided with a first sub copper bar, an insulating layer and a second sub copper bar along the first direction, the first sub copper bar and the second sub copper bar have opposite polarities, and the second sub copper bar and the first copper bar have the same polarity and are connected.

4. The capacitor according to claim 3, wherein the first copper bar is provided with at least two first alignment structures, the second copper bar is provided with at least two second alignment structures, and the first alignment structures and the second alignment structures are arranged in an aligned-clamped manner.

5. The capacitor according to claim 3, wherein when the first electrode and the first sub copper bar have the same polarity, and the second electrode and the second sub copper bar have the same polarity, the first electrode and the first sub copper bar are electrically connected through a first via, and the second electrode and the second sub copper bar are electrically connected through a second via;

6. The capacitor of claim 1, wherein said set of capacitive cores comprises at least N rows of capacitive cores, and wherein in said first orientation, said first row of copper overlaps said first electrodes of said N-1 row of capacitive cores and said first electrodes of said N row of capacitive cores, respectively, said first row of copper does not overlap a projection of said second electrodes of said N-1 row of capacitive cores, and said first row of copper does not overlap a projection of said second electrodes of said N row of capacitive cores; or, the first copper bar is respectively overlapped with the second electrode of the N-1 th row of capacitor core row and the second electrode of the N-1 th row of capacitor core row, the first copper bar is respectively not overlapped with the projection of the first electrode of the N-1 th row of capacitor core row and the projection of the first copper bar is not overlapped with the projection of the first electrode of the N-1 th row of capacitor core row;

wherein N is a positive integer greater than or equal to 2.

7. The capacitor of claim 1 wherein the direction of thermal conduction of the first row of copper is perpendicular to the direction of the electrodes of the capacitive core.

8. The capacitor of claim 1 further comprising a case, wherein a surface of the thermally conductive substrate on a side away from the capacitive core in the first direction is in at least partial contact with the case.

9. The capacitor of claim 8 wherein said case is further provided with at least two third alignment structures on a side thereof adjacent to said capacitive core, said third alignment structures being in contact with said thermally conductive substrate.

10. An electric vehicle comprising the capacitor of any one of claims 1-9.