CN216353809U

CN216353809U - Capacitor with bus bar laminated structure

Info

Publication number: CN216353809U
Application number: CN202123068749.4U
Authority: CN
Inventors: 刘利安; 金凤; 潘涛; 刘智操
Original assignee: Shanghai Eagtop Electronic Technology Co ltd
Current assignee: Shanghai Eagtop Electronic Technology Co ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2022-04-19
Anticipated expiration: 2031-12-08

Abstract

The utility model discloses a capacitor with a busbar laminated structure, which comprises a plurality of rows of containing cores, a plurality of connecting busbars, an upper electrode busbar and a lower electrode busbar, wherein the plurality of parallel containing cores are welded on the same connecting busbar at the same side, two adjacent connecting busbars are welded on the upper electrode busbar, the other sides of the parallel containing cores are welded on the other same connecting busbar, and the upper electrode busbar and the lower electrode busbar form a laminated layer by welding the connecting busbars with the lower electrode busbar. The utility model improves the capacitance-volume ratio and can meet stricter customer requirements.

Description

Capacitor with bus bar laminated structure

Technical Field

The utility model relates to an electric drive system of a new energy automobile, belongs to the technical field of structural design of core components of the electric drive system, and particularly relates to a capacitor with a busbar laminated structure.

Background

The work of the electric automobile needs to be controlled through electric driving, the electric driving control needs to be completed through capacitance charging and discharging in a large part, and as an electric appliance component, the electric capacitor charging and discharging core process of the automobile can generate inductance and a large amount of heat, and the reduction of the inductance and the heat release become important consideration items in capacitance design

With the development of technology, the capacitor volume is miniaturized, and the capacity is increased (namely, the volume ratio is large) to become the development trend of the automobile capacitor, so that the requirements on inductance and heat release are higher and higher.

At present, bus bars of automobile capacitors are generally divided into two sides of a core (figure 1) or welding points on the same side of the bus bar are still arranged on the two sides (figure 2) through a wall, although the latter is greatly improved in inductance and heat dissipation compared with the former, the former still has defects, firstly, the inductance is still large, and the requirements on certain capacitance products with high requirements are still difficult to meet.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problems in the prior art, the utility model provides a capacitor with a busbar laminated structure.

The utility model can be realized by the following technical scheme:

the utility model provides a female condenser of arranging laminated structure, includes that a plurality of rows hold the core, and a plurality of connection are female arranges, and the female arranging of upper plate and lower plate are female arranges, and wherein a plurality of side by side hold the welding of core homonymy on same connecting mother arranges, and adjacent two connect female arranging to weld on the female arranging of upper plate, the opposite side welding of holding the core side by side is on another same connecting mother arranges, through the female welding of arranging of this connection and subordinate, the female arranging of upper plate and lower plate form the stromatolite.

Furthermore, the connecting bus bar is an independent thin plate and is connected with the upper electrode bus bar and the lower electrode bus bar in a soldering mode.

Furthermore, the upper and lower electrode busbars are designed to be net-shaped at the connecting position with the connecting busbar, a small hole is reserved in the center, and the aperture is slightly larger than the section of the welding pin of the connecting busbar.

Furthermore, the upper and lower busbars are separated by insulating paper, and the lower busbar is separated from the capacitor core by insulating paper.

Further, the connecting bus bar is 1mm thick.

Advantageous effects

1) The current paths from the multiple rows of capacitor cores to the busbar are close, the current born by each row of capacitor cores is uniform, the heating is uniform, the temperature difference of the capacitor cores is reduced, and the service life of the capacitor is indirectly prolonged;

2) the inductance of the output end of the capacitor finished product is reduced, so that the ripple voltage of a client system is reduced, and the IGBT module is protected; the capacitance-to-volume ratio is improved, and stricter customer requirements are met compared with the existing scheme.

Drawings

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a schematic diagram of another prior art structure;

FIG. 3 is a schematic side view of the present invention;

FIG. 4 is a partial view of the present invention;

fig. 5 is another schematic side view of the present invention.

In the figure, 1-upper level bus bar; 2-mother row spacing insulating paper; 3-lower level busbar; 4-insulation paper between the lower-level busbar and the capacitor core; 5-connecting the row of welding pins; 6-a first connecting busbar; 7-a second connecting busbar; 8-a first containing core; 9-a second containing core; 10-a third holding core; 11-a fourth capacity core; 12-third connecting bus bar

Detailed Description

The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification.

As shown in fig. 3, 4 and 5, the capacitor of the busbar laminated structure of the utility model includes a plurality of rows of capacitor cores, the plurality of rows of capacitor cores are respectively connected to an upper-pole busbar 1 and a lower-pole busbar through a connecting busbar, the upper-pole busbar and the lower-pole busbar are made into a laminated structure to form the laminated busbar, wherein one sides of a first capacitor core 8 and a second capacitor core 9 are simultaneously welded to a third connecting busbar 12, the other sides of the first capacitor core 8 and the second capacitor core 9 are welded to a first connecting busbar 6, the third capacitor core 10 and a fourth capacitor core 11 are welded to a second connecting busbar 7, the first connecting busbar 6 and an adjacent second connecting busbar 7 are welded to a higher-level busbar, and the other sides of the third capacitor core 10 and the fourth capacitor core 11 are welded to the connecting busbar, and are welded to a lower-level busbar 3 through the connecting busbar (as shown in fig. 5). (the rest core groups are analogized in this way)

The upper and lower bus bars are designed to be net-shaped at the connecting position with the connecting bus bar, a small hole is reserved in the center, the aperture is slightly larger than the section of a welding pin 5 of the connecting bar (as shown in fig. 4), the first connecting bus bar 6, the second connecting bus bar 7 and the third connecting bus bar 12 are independent thin plates and are convenient to weld and assemble, the upper and lower bus bars are separated by bus bar insulating paper 2, and the lower bus bar is separated from the containing core by insulating paper 4 (as shown in fig. 3). The first, second and third connecting busbars are all 1mm thick.

The foregoing is considered as illustrative only of the embodiments of the utility model, and the appended claims are intended to cover all such modifications, equivalents, and alternatives falling within the spirit and scope of the utility model.

Claims

1. The utility model provides a female condenser of arranging laminated structure, its characterized in that, includes that a plurality of rows hold the core, and a plurality of connections are female arranges, and the female arranging of the upper electrode is female arranges with the lower electrode, and wherein a plurality of side by side hold the welding of core homonymy on same connecting mother arranges, and adjacent two connect female arranging to weld on female arranging of upper electrode, the opposite side welding of holding the core side by side is on female arranging of another same connection, through female arranging of this connection and the welding of subordinate, female arranging of upper electrode and the female stromatolite of the female formation of arranging of lower electrode.

2. The capacitor with the busbar stacking structure according to claim 1, wherein the connecting busbar is formed by soldering an independent thin plate with the upper and lower electrode busbars.

3. The capacitor with the busbar stacking structure according to claim 1, wherein the upper and lower electrode busbars are designed to be net-shaped at the connecting position with the connecting busbar, a small hole is reserved in the center, and the aperture is slightly larger than the section of a welding pin of the connecting busbar.

4. The capacitor with the busbar stacking structure according to claim 1, wherein the upper busbar and the lower busbar are separated by insulating paper, and the lower busbar is separated from the capacitor core by the insulating paper.

5. The capacitor having a busbar laminate structure according to claim 1, wherein the connecting busbar is 1mm thick.