CN-122028362-A - Filtering component, inverter and vehicle

CN122028362ACN 122028362 ACN122028362 ACN 122028362ACN-122028362-A

Abstract

The utility model relates to a filtering component, dc-to-ac converter and vehicle, this filtering component is including connecting copper bar, magnetic ring, electric capacity and heat dissipation copper bar, connect the copper bar and be used for the electricity to switch on, the magnetic ring cover is located part connect the copper bar, the electric capacity with connect the copper bar electricity and be connected, the electric capacity set up in one side of magnetic ring, the heat dissipation copper bar a part set up in the electric capacity with between the magnetic ring, so that electric capacity with the heat transfer of magnetic ring reaches the heat dissipation copper bar. The part of the heat dissipation copper bar of the filter assembly is arranged between the capacitor and the magnetic ring, so that heat of the capacitor and the magnetic ring can be transferred to the heat dissipation copper bar, and then the temperature of the surrounding environment of the capacitor and the surrounding environment of the magnetic ring can be reduced through heat transfer of the heat dissipation copper bar, a heat dissipation effect is realized, the capacitor and the magnetic ring can be dissipated in a targeted manner, and the reliability of the capacitor and the filter is improved.

Inventors

DING TAIRAN
XIE WEIQI
Shi Chunfu
LI HAOTIAN
LI MOZHI

Assignees

小米汽车科技有限公司

Dates

Publication Date: 20260512
Application Date: 20260121

Claims (14)

1. A filter assembly, comprising: the connecting copper bar is used for electric conduction; the magnetic ring is sleeved on part of the connecting copper bars; the capacitor is electrically connected with the connecting copper bar and is arranged on one side of the magnetic ring; and one part of the heat dissipation copper bar is arranged between the capacitor and the magnetic ring, so that heat of the capacitor and the magnetic ring is transferred to the heat dissipation copper bar.
2. The filter assembly of claim 1, wherein the other portion of the heat dissipating copper bar is disposed on one side of the capacitor, and wherein the projection of the capacitor falls on the other portion of the heat dissipating copper bar in a direction perpendicular to the heat dissipating copper bar, wherein at least a portion of the heat of the capacitor can be transferred to the heat dissipating copper bar such that the heat of the capacitor can be transferred to the heat dissipating copper bar along two heat transfer paths.
3. The filter assembly of claim 2, wherein the heat dissipating copper bar comprises a plate body and a heat absorbing portion, the heat absorbing portion is connected with the plate body, at least part of the heat absorbing portion is arranged between the capacitor and the magnetic ring, and the plate body is arranged on one side of the capacitor; And part of heat of the capacitor is transferred to the plate body through the heat absorbing part, and the other part of heat of the capacitor is directly transferred to the plate body.
4. A filter assembly according to claim 3, wherein the heat sink is connected to an edge of the plate, the heat sink being adjacent to and spaced apart from the capacitor.
5. A filter assembly according to claim 3, wherein the projection of the capacitor is set to a first projection and the projection of the plate is set to a second projection in a direction perpendicular to the plate, the ratio of the area of the second projection to the area of the first projection being greater than or equal to 2.
6. The filter assembly of claim 3, wherein the heat sink includes a first heat sink and a second heat sink, the capacitor includes a first capacitor and a second capacitor, the first heat sink corresponds to the first capacitor, and the second heat sink corresponds to the second capacitor.
7. The filter assembly of claim 6, wherein the first heat absorbing member is configured in a plate shape, the first heat absorbing member is disposed at an angle to the plate body, one side of the first capacitor faces the first heat absorbing member, and the other side of the first capacitor faces the plate body, so that heat of the first capacitor can be transferred to the first heat absorbing member and the plate body, respectively.
8. The filter assembly of claim 6, wherein the second heat sink includes a pin, one end of the pin being connected to the plate, one side of the second capacitor being oriented toward the plate, the other side of the second capacitor being oriented toward the pin such that a portion of the heat of the second capacitor is transferred to the pin and the plate; The other end of the pin is provided with a connector, the second capacitor is provided with a fourth lead, and the fourth lead is connected with the connector so that the other part of heat of the second capacitor is transferred to the connector through the fourth lead; And part of heat of the second capacitor is directly transferred to the pin and the plate body, and the other part of heat of the second capacitor is transferred to the pin through the fourth lead and is transferred to the plate body through the pin.
9. The filter assembly of claim 6, wherein the second heat sink includes a pin, an extension support is formed at one side of the plate, one end of the pin is connected to the extension support to shorten a length of the pin, one side of the second capacitor faces the plate, and the other side of the second capacitor faces the pin to transfer a portion of heat of the second capacitor to the pin and the plate; The other end of the pin is provided with a connector, the second capacitor is provided with a fourth lead, and the fourth lead is connected with the connector so that the other part of heat of the second capacitor is transferred to the connector through the fourth lead; And part of heat of the second capacitor is directly transferred to the pin and the plate body, and the other part of heat of the second capacitor is transferred to the pin through the fourth lead and is transferred to the plate body through the pin.
10. The filter assembly of claim 1, further comprising a base, the heat dissipating copper bar being provided with a mounting portion, the mounting portion being connected to the base, heat of the heat dissipating copper bar being transferred to the base, the heat dissipating copper bar being for grounding through the base; The heat of the capacitor and the magnetic ring is transferred to the heat dissipation copper bar, and the heat dissipation copper bar guides the heat to the mounting part and is transferred to the base.
11. The filter assembly of claim 1, wherein the connection copper bar is provided with a connection portion, the capacitor is provided with a lead, and the lead is connected with the connection portion; The capacitor comprises a first capacitor and a second capacitor, the connecting copper bar comprises an anode copper bar and a cathode copper bar, and the lead comprises a first lead, a second lead, a third lead and a fourth lead; One end of the first lead wire and one end of the second lead wire are connected with the first capacitor, the other end of the first lead wire is connected with the connecting part of the positive electrode copper bar, the other end of the second lead wire is connected with the connecting part of the negative electrode copper bar, heat of the positive electrode copper bar can be transferred to the first capacitor through the first lead wire and transferred to the heat dissipation copper bar through the first capacitor, and heat of the negative electrode copper bar can be transferred to the first capacitor through the second lead wire and transferred to the heat dissipation copper bar through the first capacitor; The number of the second capacitors is at least two, each second capacitor is provided with a third lead and a fourth lead, at least one third lead of the second capacitor is connected with the positive electrode copper bar, at least one third lead of the second capacitor is connected with the negative electrode copper bar, each fourth lead of the second capacitor is connected with the heat dissipation copper bar, and heat of the positive electrode copper bar and the negative electrode copper bar can be transferred to the second capacitor through the third lead and transferred to the heat dissipation copper bar through the second capacitor.
12. The filter assembly of any of claims 1-11, wherein the connection copper bar comprises a busbar and an adapter sub-bar, the adapter sub-bar being integrally formed or welded with the busbar.
13. An inverter comprising the filter assembly of any one of claims 1-12.
14. A vehicle comprising a filter assembly according to any one of claims 1-12, or an inverter according to claim 13.

Description

Filtering component, inverter and vehicle Technical Field The disclosure relates to the technical field of vehicle manufacturing, and in particular relates to a filter assembly, an inverter and a vehicle. Background In the related art, the filter does not have a design for radiating the capacitor, so that the capacitor cannot radiate effectively, and the radiating effect is poor. Disclosure of Invention An object of the present disclosure is to provide a filter assembly, an inverter, and a vehicle to solve the problems in the related art described above. To achieve the above object, one aspect of the present disclosure provides a filter assembly comprising: the connecting copper bar is used for electric conduction; the magnetic ring is sleeved on part of the connecting copper bars; the capacitor is electrically connected with the connecting copper bar and is arranged on one side of the magnetic ring; and one part of the heat dissipation copper bar is arranged between the capacitor and the magnetic ring, so that heat of the capacitor and the magnetic ring is transferred to the heat dissipation copper bar. Among the above-mentioned technical scheme, through the heat dissipation copper bar that sets up, realize the heat dissipation, can effectively improve heat radiating area to improve the radiating effect. And a part of the heat dissipation copper bar is arranged between the capacitor and the magnetic ring, so that heat of the capacitor and the magnetic ring can be transferred to the heat dissipation copper bar, and then the heat is transferred away through the heat transfer of the heat dissipation copper bar, so that the temperature of the surrounding environment of the capacitor and the surrounding environment of the magnetic ring can be reduced, the heat dissipation effect is realized, the capacitor and the magnetic ring can be dissipated in a targeted manner, and the reliability of the capacitor and the filter is improved. The filtering component can treat the noise effect caused by ripple current under the conditions of high current and high heat source, and can effectively dissipate heat, so that the stability and the service life of the filtering component are ensured. In some possible embodiments, the other part of the heat dissipation copper bar is disposed on one side of the capacitor, and in a direction perpendicular to the heat dissipation copper bar, a projection of the capacitor falls on the other part of the heat dissipation copper bar, and at least part of heat of the capacitor can be transferred to the heat dissipation copper bar, so that heat of the capacitor can be transferred to the heat dissipation copper bar along two heat conduction paths. Through such setting, can realize two heat transfer paths to improve the radiating effect. In some possible embodiments, the heat dissipation copper bar includes a plate body and a heat absorption portion, the heat absorption portion is connected to the plate body, at least part of the heat absorption portion is disposed between the capacitor and the magnetic ring, and the plate body is disposed on one side of the capacitor; And part of heat of the capacitor is transferred to the plate body through the heat absorbing part, and the other part of heat of the capacitor is directly transferred to the plate body. Through this setting, can do benefit to the arrangement of heat dissipation copper bar. In some possible embodiments, the heat absorbing portion is connected to an edge of the plate body, and the heat absorbing portion is close to the capacitor and is spaced apart from the capacitor. Through such setting, do benefit to the heat absorption portion and stretch into between electric capacity and the magnetic ring, heat absorption portion is in border position for the plate body does not influence the arrangement of electric capacity, also can not disturb the arrangement of magnetic ring, and the interval setting of heat absorption portion and electric capacity and magnetic ring simultaneously can not influence the function of electric capacity and magnetic ring. In some possible embodiments, in a direction perpendicular to the plate body, the projection of the capacitor is set to a first projection, the projection of the plate body is set to a second projection, and a ratio of an area of the second projection to an area of the first projection is greater than or equal to 2 times. Through such setting, improve heat conduction area, improve the radiating effect. In some possible embodiments, the heat absorbing part includes a first heat absorbing member and a second heat absorbing member, the capacitor includes a first capacitor and a second capacitor, the first heat absorbing member corresponds to the first capacitor, and the second heat absorbing member corresponds to the second capacitor. Through so setting, can dispel the heat to first electric capacity and second electric capacity, guarantee the radiating effect to different electric capacities.