CN210296126U

CN210296126U - Bus capacitor of new energy motor controller

Info

Publication number: CN210296126U
Application number: CN201921523120.4U
Authority: CN
Inventors: 郑立楷
Original assignee: Shenzhen Faraday Electric Drive Co ltd
Current assignee: Shenzhen Faraday Electric Drive Co ltd
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2020-04-10
Anticipated expiration: 2029-09-12

Abstract

The embodiment of the utility model discloses new forms of energy machine controller's generating line electric capacity, including copper bar and a plurality of electric capacity core package that sets up side by side, the back connection of copper bar and electric capacity core package is fixed, and electric capacity core package top is by being equipped with positive negative insulating layer from bottom to top in proper order, the female row of positive and female burden of arranging of AC output, and it is positive that the female row of arranging of DC input is equipped with just to the female row of AC output, and the female row of arranging of DC input that is equipped with of female burden of AC output, and the supplementary copper mesh or the soldering copper bar electricity of welding through resistance between. The utility model improves the heat dissipation capacity of the capacitor core cladding, improves the reliability and the service life of the capacitor; the utility model discloses no shell plastic envelope, simple structure has simplified production procedure, reduces electric capacity processing technology failure rate, has improved the electric capacity yield, the cost is reduced.

Description

Bus capacitor of new energy motor controller

Technical Field

The utility model relates to a new energy automobile electron field especially relates to a new energy machine controller's bus-bar capacitance.

Background

No matter the new energy motor controller works in an electric mode or a power generation mode, reactive energy and instantaneous high-frequency switching energy can only be buffered by an energy storage element of a bus filter, a bus capacitor is changed from an initial electrolytic capacitor to a film capacitor which is commonly used at present, and the bus filter is mainly born by the film capacitor under the condition of ensuring the normal work of a system.

With the popularization and rapid development of electric vehicles, the requirements of a motor controller on the whole power/weight density, the manufacturing process and the cost control are higher and higher, wherein the model selection design of a bus film capacitor plays a very important role in the whole power/weight density and the cost control. However, the conventional bus bar film capacitor has the disadvantages of poor heat dissipation and high cost.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a technical problem that will solve lies in, provides a new forms of energy machine controller's bus-bar capacitance to make and promote heat dispersion and reduce cost.

In order to solve the technical problem, the embodiment of the utility model provides a new forms of energy machine controller's bus-bar capacitor is proposed, including copper bar and a plurality of electric capacity core package that sets up side by side, the back connection of copper bar and electric capacity core package is fixed, electric capacity core package top is by being equipped with positive negative insulating layer from bottom to top in proper order, the female row of positive and female burden of arranging of AC output, it is positive to be equipped with direct current input female arranging on the female row of AC output, it is female row burden to be equipped with direct current input on the female row of AC output, connect through resistance welding supplementary copper mesh or tin soldering copper bar electricity between a plurality of electric.

Further, the adjacent capacitor core packages are fixedly encapsulated.

The utility model has the advantages that: the utility model improves the heat dissipation capacity of the capacitor core cladding, improves the reliability and the service life of the capacitor; the utility model discloses no shell plastic envelope, simple structure has simplified production procedure, reduces electric capacity processing technology failure rate, has improved the electric capacity yield, the cost is reduced.

Drawings

Fig. 1 is a three-dimensional structure diagram of a bus capacitor of a new energy motor controller according to an embodiment of the present invention.

Fig. 2 is a steady state simulation display diagram of bus capacitor of the new energy motor controller according to the embodiment of the present invention.

Detailed Description

It should be noted that, in the present application, the embodiments and features of the embodiments may be combined with each other without conflict, and the present invention is further described in detail with reference to the accompanying drawings and specific embodiments.

In the embodiment of the present invention, if there is directional indication (such as upper, lower, left, right, front, and rear … …) only for explaining the relative position relationship between the components and the motion situation under a certain posture (as shown in the drawing), if the certain posture is changed, the directional indication is changed accordingly.

In addition, the descriptions of the first, second, etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying any relative importance or implicit indication of the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature.

Referring to fig. 1 to 2, a bus capacitor of a new energy motor controller according to an embodiment of the present invention includes a copper bar 1 and a plurality of capacitor core packages 2 disposed side by side.

The copper bar 1 is fixedly connected with the back of the capacitor core package 2. The plurality of capacitor cores 2 are connected in parallel. And a positive and negative insulating layer 3, an AC output bus bar positive 4 and an AC output bus bar negative 5 are sequentially arranged above the capacitor core package 2 from bottom to top. And leading-out connection lugs are arranged at the positions of the AC output busbar positive 4 and the AC output busbar negative 5 corresponding to each row of capacitor core packages 2 and are used for externally connecting a circuit.

The AC output busbar positive 4 is provided with a DC input busbar positive 6, and the AC output busbar negative 5 is provided with a DC input busbar negative 7. The plurality of capacitor core packages 2 are electrically connected through a resistance welding auxiliary copper net or a tin soldering copper bar 8. Auxiliary holes are formed in the gaps, corresponding to the capacitor core packages 2, of the resistance welding auxiliary copper mesh.

In one embodiment, a gap area between adjacent capacitor core packages 2 is a potting fixing area 9, and the adjacent capacitor core packages 2 are potted and fixed.

The utility model has the advantages of less copper bar usage and low cost; the plastic shell is not used, the plastic shell can be directly contacted with a heat conducting surface, the heat conducting property is excellent, the severe environment can be borne, the automation degree is high, and the output inductance of the output busbar lamination mode is small; the potting is simple, the yield is high, and the potting can be used in common commercial vehicle occasions.

As shown in fig. 2, the steady state simulation shows: the utility model discloses a new forms of energy machine controller's rated temperature rise of bus capacitor reduces to 95.9 ℃ from 102.5 ℃, has saved the shell promptly, has improved the heat dissipation again.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a new forms of energy motor controller's bus-bar capacitance, include copper bar and a plurality of electric capacity core package that sets up side by side, the back connection of copper bar and electric capacity core package is fixed, its characterized in that, electric capacity core package top is by being equipped with positive negative insulating layer from bottom to top in proper order, the female row of positive and the female burden of arranging of AC output, it is positive to be equipped with the female row of direct current input that is equipped with of the female row of AC output, it is female to be equipped with the female burden of direct current input on the female row of AC output, it is connected to assist copper mesh.

2. The bus capacitor of the new energy motor controller of claim 1, wherein adjacent capacitor cores are potted and fixed.