CN213989488U

CN213989488U - Be applied to on-vehicle low inductance capacitance's of two dc-to-ac converters copper bar structure

Info

Publication number: CN213989488U
Application number: CN202120202555.XU
Authority: CN
Inventors: 廖东明; 陈重生
Original assignee: Yangzhou Nissei Electric Co ltd
Current assignee: Yangzhou Nissei Electric Co ltd
Priority date: 2021-01-25
Filing date: 2021-01-25
Publication date: 2021-08-17
Anticipated expiration: 2031-01-25

Abstract

The application discloses be applied to on-vehicle low inductance capacitance's of two inverters copper bar structure includes: a first copper bar; the insulating plate is arranged on one side of the first copper bar; the second copper bar is arranged on the side face of the insulating plate, the first copper bar and the second copper bar are respectively positioned on two sides of the insulating plate, and at least one group of through hole groups are respectively arranged on the first copper bar and the second copper bar; and one end of the red copper ring is connected with the through hole group of the first copper bar, and the other end of the red copper ring penetrates through the insulating plate and is connected with the through hole group of the second copper bar. The red copper ring that connects on the second copper bar overflows and makes the positive and negative electric charge that exists on first copper bar and the second copper bar be guided to the coplanar to effectively reduce the inductance, reduce the heating, the electric quantity consumption scheduling problem that stray inductance brought, improve electric energy conversion efficiency.

Description

Be applied to on-vehicle low inductance capacitance's of two dc-to-ac converters copper bar structure

Technical Field

The utility model relates to a condenser technical field especially relates to a low inductance vehicle mounted capacitor structure.

Background

An internal combustion engine is not used in the pure electric vehicle at present, and when the electric vehicle is braked, the motor can be used as a generator to convert kinetic energy into electric energy to charge a battery. Meanwhile, the inverter converts the direct current from the battery into three-phase alternating current required by the motor. Therefore, the inverter is a core high-voltage module in the whole vehicle of the pure electric vehicle.

In practical application, the capacitor is responsible for blocking ripple current and eliminating direct current voltage fluctuation in an electric vehicle inverter, and power density is not only increased along with the shortage of the internal space of an automobile and the integration and integration of a system. The devices, interconnections, heat dissipation, etc. together form an aggregate to reduce the overall cost of the power electronic system. However, when the capacitor inductance is large, the current imbalance due to the inductance is caused by the high frequency alternating current, and the stray inductance increases with the increase of the current.

The existing method for reducing stray inductance of the inverter adopts the structure that the directions of positive and negative terminals of a capacitor are kept consistent with the current direction, and the distributed inductance is reduced through a structure that positive and negative electrodes are stacked and distributed in parallel, so that the reverse peak voltage at two ends of a power element is reduced, but the effect of reducing the inductance still has a limitation.

SUMMERY OF THE UTILITY MODEL

To the defect among the prior art, the utility model provides a low inductance vehicle-mounted capacitor structure to reduce the stray inductance that is applied to the electric capacity existence of two dc-to-ac converters. In order to solve the technical problem, the utility model provides a technical scheme as follows:

the utility model provides a be applied to on-vehicle low inductance capacitance's of two inverters copper bar structure, includes: a first copper bar; the insulating plate is arranged on one side of the first copper bar; the second copper bar is arranged on the side face of the insulating plate, the first copper bar and the second copper bar are respectively positioned on two sides of the insulating plate, and at least one group of through hole groups are arranged on the first copper bar and the second copper bar; and one end of the red copper ring is connected with the through hole group of the first copper bar, and the other end of the red copper ring penetrates through the insulating plate and is connected with the through hole group of the second copper bar.

According to the technical scheme, the copper bar structure applied to the double-inverter vehicle-mounted low-inductance capacitor is characterized in that the red copper ring overflows, positive and negative charges existing in the first copper bar and the second copper bar are guided to the same plane, and therefore the effect of reducing the inductance is achieved.

Optionally, the second copper bar is divided into a convex hull section and a plane section, the convex hull section and the plane section are distributed in a staggered mode, the convex hull section is a protrusion facing the insulating plate, and the convex hull section is provided with the through hole group.

Optionally, the first copper bar through hole group and the second copper bar through hole group are both provided with an insulator.

According to the technical scheme, the copper bar structure applied to the double-inverter vehicle-mounted low-inductance capacitor provided by the application has the advantages that the red copper ring connected with the copper bar on one side is prevented from being in direct contact with the corresponding copper bar when overflowing through the insulating piece, so that short circuit is caused.

Optionally, the first copper bar through hole group is provided with fastening screws arranged on the outer side of the insulating part to realize structural fixation.

Optionally, the insulation member includes a platform section and at least one boss section, and the boss section is disposed on the platform section.

Optionally, the inner wall of the boss section is connected with the outer wall of one end of the red copper ring.

Optionally, the purple copper ring includes a plurality of first purple copper rings and second purple copper ring, first screens groove has been seted up along outward to first red copper ring upper end, first screens groove with the through-hole group link of first copper bar, first red copper ring lower extreme with boss section inner wall connection, second red copper ring upper end with boss section inner wall connection, second screens groove has been seted up along outward to second red copper ring lower extreme, second screens groove with the through-hole group link of second copper bar.

Compared with the prior art, the beneficial effects of the utility model are that:

1) the application discloses low inductance capacitance's copper bar structure utilizes red copper ring to realize the drainage, with the positive negative pole guide of copper bar to coplanar, can effectively reduce the influence that stray inductance caused to the capacitor structure is inside.

2) Through adding the red copper ring at copper bar self as overflowing the piece, do not additionally add other additional accessories, do not increase the electric capacity volume when reducing the inductance, reduced the cost of transportation.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.

Fig. 1 is a diagram of an assembled structure of a copper bar structure applied to a dual-inverter vehicle-mounted low-inductance capacitor according to an embodiment of the present invention;

fig. 2 is an enlarged detail view of a copper bar structure applied to a dual-inverter vehicle-mounted low-inductance capacitor according to an embodiment of the present invention;

fig. 3 is a diagram of a structure of a copper ring applied to a copper bar structure of a dual-inverter vehicle-mounted low-inductance capacitor according to an embodiment of the present invention;

fig. 4 is an embodiment of the present invention, which is a structural diagram of an insulator applied to a copper bar structure of a dual-inverter vehicle-mounted low-inductance capacitor.

The figures show that: 1-a first copper bar; 2-an insulating plate; 3-a second copper bar; 31-convex hull section; 32-plane section; 41-first red copper ring; 411-a first clamping groove; 42-second purple copper ring; 421-a second clamping groove; 5-an insulating member; 51-a platform section; 52-boss section.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.

It is to be noted that unless otherwise specified, technical or scientific terms used herein shall have the ordinary meaning as understood by those skilled in the art to which the present invention belongs.

As shown in the figure, this embodiment provides a be applied to on-vehicle low inductance capacitance's of two inverters copper bar structure, includes: a first copper bar 1; the insulating plate 2 is arranged on one side of the first copper bar 1; the second copper bar 3 is arranged on the side surface of the insulating plate 2, the first copper bar 1 and the second copper bar 3 are respectively positioned on two sides of the insulating plate 2, and at least one group of through hole groups are respectively arranged on the first copper bar 1 and the second copper bar 3; and one end of the red copper ring is connected with the through hole group of the first copper bar 1, and the other end of the red copper ring penetrates through the insulating plate 2 and is connected with the through hole group of the second copper bar 3. Utilize red copper ring to overflow, lead the positive and negative electric charge in second copper bar and the first copper bar to the coplanar, reduce the inductance, avoid the stray inductance in the copper bar to generate heat the influence.

The second copper bar is divided into convex hull sections 31 and plane sections 32, the convex hull sections 31 and the plane sections 32 are distributed in a staggered mode, the convex hull sections 31 are bulges facing the insulating plate, and the through hole groups are formed in the convex hull sections 31. The convex hull section 31 provides an insulation foundation for the red copper ring, and the convex hull section 31 and the plane section 32 are distributed in a staggered mode to enable the red copper ring to be arranged according to conditions aiming at the first copper bar 1 and the second copper bar 3, so that the insulation and connection requirements are met.

All there is fastening screw to install on 1 copper bar through-hole group in 5 outsides of insulating part realize that the structure is fixed.

The insulating member 5 comprises a platform section 51 and at least one boss section 52, and the boss section 52 is arranged on the platform section 51. The red copper ring connected with the copper bar on one side is prevented from overflowing and directly contacting with other copper bars at the same time through the insulating piece 5, so that short circuit is caused.

The purple copper ring includes a plurality of first purple copper rings 41 and second purple copper ring 42, first screens groove 411 has been seted up along first purple copper ring 41 upper end is outer, first screens groove 411 with the through-hole group link of first copper bar 1, first purple copper ring 41 lower extreme with 52 interior wall connection of boss section, second purple copper ring 42 upper end with 52 interior wall connection of boss section, second screens groove 421 has been seted up along second purple copper ring 42 lower extreme is outer, second screens groove 421 with the through-hole group link of second copper bar 3.

The first clamping groove 411 and the second clamping groove 421 enable the first copper bar 41 and the second copper bar 42 to be in a stable structure with the first copper bar 1 and the second copper bar 3, and short circuit caused by contact between the parallel first copper bar 1 and the parallel second copper bar 3 is avoided.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification.

Claims

1. The utility model provides a be applied to on-vehicle low inductance capacitance's of two inverters copper bar structure which characterized in that includes:

a first copper bar;

the insulating plate is arranged on one side of the first copper bar;

the second copper bar is arranged on the side face of the insulating plate, the first copper bar and the second copper bar are respectively positioned on two sides of the insulating plate, and at least one group of through hole groups are arranged on the first copper bar and the second copper bar;

and one end of the red copper ring is connected with the through hole group of the first copper bar, and the other end of the red copper ring penetrates through the insulating plate and is connected with the through hole group of the second copper bar.

2. The copper bar structure applied to the double-inverter vehicle-mounted low-inductance capacitor as claimed in claim 1, wherein the second copper bar is divided into convex hull sections and plane sections, the convex hull sections and the plane sections are distributed in a staggered manner, the convex hull sections are protrusions facing an insulating plate, and the convex hull sections are provided with the through hole groups.

3. The copper bar structure applied to the double-inverter vehicle-mounted low-inductance capacitor as claimed in claim 1, wherein an insulator is mounted on the outer side of each of the first copper bar through hole group and the second copper bar through hole group.

4. The copper bar structure applied to the double-inverter vehicle-mounted low-inductance capacitor as claimed in claim 3, wherein the first copper bar through hole group is provided with a fastening screw which is arranged on the outer side of the insulating member to realize structural fixation.

5. The copper bar structure applied to the double-inverter vehicle-mounted low-inductance capacitor as claimed in claim 3, wherein the insulator comprises a platform section and at least one boss section, and the boss section is arranged on the platform section.

6. The copper bar structure applied to the double-inverter vehicle-mounted low-inductance capacitor as claimed in claim 5, wherein the inner wall of the boss section is connected with the outer wall of one end of the red copper ring.

7. The copper bar structure applied to the double-inverter vehicle-mounted low-inductance capacitor is characterized in that the copper rings comprise a plurality of first copper rings and second copper rings, a first clamping groove is formed in the outer edge of the upper end of each first copper ring and connected with the through hole group of the first copper bar, the lower end of each first copper ring is connected with the inner wall of the boss section, the upper end of each second copper ring is connected with the inner wall of the boss section, a second clamping groove is formed in the outer edge of the lower end of each second copper ring and connected with the through hole group of the second copper bar.