Connector with capacitor for inverter

Abstract

The utility model relates to a connector with a capacitor for an inverter, which is used for circuit connection of a new energy automobile inverter and comprises a copper bar plastic-coated body, a copper bar assembly arranged on the copper bar plastic-coated body, a ceramic capacitor, two film capacitors and a connecting copper seat arranged on the copper bar plastic-coated body, the copper bar assembly comprises a positive electricity copper bar, a negative electricity copper bar, a first positive electricity connecting seat, a second positive electricity connecting seat, a first negative electricity connecting seat and a second negative electricity connecting seat, and the first positive electricity connecting seat and the first negative electricity connecting seat are respectively connected with a connecting pin of one thin film capacitor. The other connecting pins of the two thin-film capacitors are connected with the connecting copper seat; and two connecting pins of the ceramic capacitor are respectively connected with the second positive electricity connecting seat and the second negative electricity connecting seat. The connector optimizes the product structure, is convenient to install, and achieves a high-efficiency current protection function in a very small space.

Description

TECHNICAL FIELD

[0001] The utility model relates to a connector for automobile, concretely relates to a connector with capacitor applied to new energy automobile inverter. BACKGROUND

[0002] With the development of science and technology, the progress of technology, the automobile product is changing day by day, also put forward higher requirements to circuit connecting piece product, and the automobile parts is the important field of our country automobile industry participation globalization.In new energy hybrid car, high voltage connector plays a very important role, through the terminal of copper bar both ends of the connector, the transmission and interaction of current in inverter are realized, and the current transmission and interaction process is usually accompanied by high temperature and high pressure, in practical application, the combination scheme of traditional fuse and filter capacitor often has the defects such as large volume, heavy weight, complex installation, etc., it is difficult to adapt to the requirements of modern automobile to light weight, compact and high efficiency.

[0003] The existing connector has the following defects in actual use:

[0004] (1) the volume is large, and it is difficult to adapt to the assembly environment;

[0005] (2) the mass is too heavy, and it is difficult to adapt to the demand of light weight of new energy automobile in today's market;

[0006] (3) the structure is complex, the function is realized relatively dispersed, and is not integrated;

[0007] (4) the installation process is relatively complicated, and it cannot adapt to rapid installation;

[0008] (5) the filtering effect is poor, and it is difficult to meet the customer's demand.

[0009] Therefore, the connector of the prior art still has room for improvement. CONTENT OF THE UTILITY MODEL

[0010] The utility model aims at providing a connector with capacitor used in new energy automobile inverter, which has reliable structure, to solve the existing technical problems.

[0011] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0012] The utility model provides a kind of connector with capacitor for inverter, for the circuit connection of new energy automobile inverter, the connector includes a copper bar plastic body, copper bar assembly arranged on the copper bar plastic body, a ceramic capacitor, two film capacitors and a connecting copper base arranged on the copper bar plastic body, the copper bar assembly includes positive copper bar, negative copper bar, a first positive electric connector, a second positive electric connector, a first negative electric connector and a second negative electric connector, the first positive electric connector and the first negative electric connector are connected respectively one connecting pin of the film capacitor, and the other connecting pin of the two film capacitors is connected with the connecting copper base;Two connecting pins of the ceramic capacitor are connected with the second positive electric connector and the second negative electric connector respectively.

[0013] The connector with capacitor for inverter described in the preferred embodiment of the present application, the connecting copper base includes two copper bases and a connecting hole, the two copper bases and the connecting hole are integrally formed, and the other connecting pin of the two film capacitors is connected with the two copper bases respectively.

[0014] The connector with capacitor for inverter described in the preferred embodiment of the present application, the connector further includes a magnetic ring, the copper bar plastic body includes a magnetic ring accommodating groove, and the magnetic ring is arranged in the magnetic ring accommodating groove; the slot opening of the magnetic ring accommodating groove is connected with a magnetic ring protection cover.

[0015] The connector with capacitor for inverter described in the preferred embodiment of the present application, the film capacitor is a safety film capacitor, and the ceramic capacitor is a safety ceramic capacitor.

[0016] The connector with capacitor for inverter described in the preferred embodiment of the present application, the connector further includes a plurality of bushings, and the bushings are arranged in the connecting hole of the copper bar plastic body to stably connect.

[0017] The design concept of the present application is to design a connector with capacitor used in inverter, and to realize filtering function on the basis of current transmission by adopting an integrated structure design.

[0018] Due to the above technical scheme, the utility model has the following advantages and effects:

[0019] Firstly, the present application integrates filtering technology to realize functional integration;

[0020] Secondly, the present application optimizes product structure, facilitates installation, and realizes efficient current protection function in a very small space;

[0021] Thirdly, the present application adopts high-performance engineering plastics, which has excellent heat resistance, chemical corrosion resistance, mechanical strength and dimensional stability, and can maintain stable performance in harsh environments such as high temperature and high humidity.

[0022] Of course, implementing any one of the specific embodiments of the present application does not necessarily have all the above technical effects at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 The connector appearance schematic diagram of the present application;

[0024] Figure 2 The connector explosion schematic diagram of the present application;

[0025] Figure 3 The copper bar assembly and the connecting copper seat schematic diagram of the present application;

[0026] Figure 4 The magnetic ring schematic diagram of the present application;

[0027] Figure 5 The film capacitor schematic diagram of the present application;

[0028] Figure 6 The ceramic capacitor schematic diagram of the present application. DETAILED DESCRIPTION

[0029] For the convenience of understanding, the preferred embodiments of the present application are described in further detail below in combination with the drawings.

[0030] Please refer to Figure 1 and Figure 2 The connector appearance schematic diagram and the explosion schematic diagram of the present application, the connector of the present application is an integrated structure design, used in the inverter, realizes the filtering function on the basis of realizing the current transmission, ensures the cooperative work between each part; and optimizes the product structure, facilitates the installation, realizes the high efficient current protection function in the very small space; greatly improves the safety performance of the connector, effectively prevents the occurrence of the dangerous conditions such as the automobile fire.

[0031] For example Figure 2As shown, the connector is used for circuit connection of new energy automobile inverter, the vehicle-mounted inverter (power converter, Power Inverter) is a kind of can convert DC12V direct current into the same AC220V alternating current as mains for general electrical appliances, it is a kind of convenient power converter for vehicle;A kind of connector with capacitor for inverter of the present application is used for new energy automobile inverter, the connector includes a copper bar plastic body 10, copper bar assembly arranged on the copper bar plastic body 10, a ceramic capacitor 30, two film capacitors 40 and a connecting copper base 50 arranged on the copper bar plastic body 10, wherein the copper bar assembly is shot in the copper bar plastic body 10 only to leak out head and tail and connecting portion, similarly, the connecting copper base 50 is shot in the copper bar plastic body 10 only to leak out connecting portion;In the embodiment of the application, the copper bar plastic body 10 adopts high-performance engineering plastics, has excellent heat resistance, chemical corrosion resistance, mechanical strength and dimensional stability, can maintain stable performance in high temperature, high humidity and other harsh environments.

[0032] Please refer to Figure 3 、 Figure 5 And Figure 6 The copper bar assembly and the connecting copper base of the present application, the copper bar assembly includes positive copper bar 21, negative copper bar 22, a first positive connection seat 211, a second positive connection seat 212, a first negative connection seat 221 and a second negative connection seat 222, the positive copper bar 21, the first positive connection seat 211 and the second positive connection seat 212 are integrally formed, similarly, the negative copper bar 22, the first negative connection seat 221 and the second negative connection seat 222 are integrally formed. Figure 1 In the first positive connection seat 211 and the first negative connection seat 221 are connected with one connecting pin of the film capacitor 40 respectively, another connecting pin of the two film capacitors 40 is connected with the connecting copper base 50, that is, the connection mode is in turn: the first positive connection seat 211 is connected with the film capacitor 40, the film capacitor 40 is connected with the connecting copper base 50, the connecting copper base 50 is connected with the first negative connection seat 221;In addition, two connecting pins of the ceramic capacitor 30 are connected with the second positive connection seat 212 and the second negative connection seat 222 respectively.

[0033] The application uses two film capacitors, which are non-polar capacitors and do not need to be distinguished between positive and negative poles in use; the electrodes of the film capacitors are made of metal foil, and the dielectric is plastic film, and the advantages include high withstand voltage, wide temperature range, long service life, good self-healing property and good frequency characteristics, and the film capacitors are suitable for filtering functions in high-voltage and large-current scenes; in addition, the application uses a ceramic capacitor, which has no positive and negative polarity and can be connected arbitrarily in a circuit without distinguishing between positive and negative poles. The ceramic capacitor has a rated voltage and a capacitance value, and overvoltage and mismatched capacitance values can cause component damage or circuit failure characteristics to reach the function of a fuse warning; the application selects high-quality capacitors with low ESL (equivalent series inductance) characteristics to ensure effective filtering of high-frequency noise and interference signals.

[0034] Please refer to Figure 1 and Figure 3 , the connecting copper seat 50 includes two copper seats 51 and a connecting hole 52, the two copper seats 51 and the connecting hole 52 are integrally formed, and the other connecting pins of the two film capacitors 40 are connected to the two copper seats 51 respectively; in the embodiment of the application, two copper seats 51 are used to connect one film capacitor 40 respectively, and such a connection mode is more stable, which ensures the filtering function of the two film capacitors 40.

[0035] Please refer to Figure 2 and Figure 4 , the connector further includes a magnetic ring 60 for electromagnetic filtering, the copper bar plastic body 10 includes a magnetic ring accommodating groove 11, the magnetic ring 60 is arranged in the magnetic ring accommodating groove 11, the magnetic ring 60 includes a middle through hole, and the copper bar assembly penetrates through the middle through hole of the magnetic ring 60; the slot of the magnetic ring accommodating groove 11 is connected with a magnetic ring protection cover 12, and the magnetic ring protection cover 12 covers the slot of the magnetic ring accommodating groove 11 to isolate the magnetic ring 60 in the magnetic ring accommodating groove 11; in the embodiment of the application, the magnetic ring 60 is a nanocrystalline magnetic ring made of nanocrystalline material, which has high saturation magnetic induction intensity, high magnetic permeability, low hysteresis loss and good temperature stability, and the low hysteresis loss and good temperature stability make the electromagnetic shielding effect better.

[0036] In the embodiment of the application, the film capacitors are safety film capacitors considering safety and EMC; the ceramic capacitors are safety ceramic capacitors; the safety capacitors will not cause electric shock and endanger personal safety after the failure of the capacitors; the safety capacitors are used for filtering in anti-interference circuits and play a power filtering role in power supplies, and respectively play a filtering role on common mode and differential mode interference.

[0037] Please refer to Figure 2The connector further comprises a plurality of bushings 70 arranged in the connecting holes of the copper bar plastic body 10 for stable connection. Figure 2 In the embodiment of the present application, the number of the bushings 70 is three, two of which are arranged in the connecting holes of the copper bar plastic body 10 on both sides of the magnetic ring accommodating groove 11, and the other one is arranged in the connecting hole of the copper bar plastic body 10 at the outlet end of the copper bar assembly.

[0038] The working principle of the connector of the present application: the connector belongs to the connector with a capacitor in the inverter, adopts an integrated structure design: composed of a copper bar assembly, a copper bar plastic body 10, a nanocrystalline magnetic ring 60, two safety film capacitors 40 and one safety ceramic capacitor 30; the connector is assembled in the gearbox of a new energy vehicle, the current enters through the terminal at one end of the copper bar assembly, is transmitted to the other terminal through the copper bars between the copper bar plastic body, and the nanocrystalline magnetic ring 60 plays an electromagnetic filtering function in the current transmission process, and the capacitor auxiliary enhances the filtering effect.

[0039] It should be noted that the use of the words "first", "second" and the like to qualify elements is merely intended to distinguish the corresponding elements, and the above words do not have special meanings unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the present application.

[0040] In the description of the present application, it should be understood that the orientation words such as "front, back, up, down, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicate the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present application and simplifying the description, and in the absence of the opposite description, these orientation words do not indicate and imply that the indicated device or element must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0041] Due to the adoption of the above technical scheme, the present application has the following advantages and effects:

[0042] First, the present application integrates the filtering technology to realize functional integration;

[0043] Second, the present application optimizes the product structure, is convenient to install, and realizes efficient current protection function in a very small space;

[0044] Third, the present application adopts high-performance engineering plastics, which has excellent heat resistance, chemical corrosion resistance, mechanical strength and dimensional stability, and can maintain stable performance in harsh environments such as high temperature and high humidity.

[0045] Of course, any one of the specific embodiments implementing the content of the utility model does not necessarily have all the above technical effects at the same time.

[0046] The above disclosed is only the preferred embodiment of the utility model, but not to limit itself, any skilled person in the art without departing from the spirit of the utility model, the equivalent changes and changes made, should fall within the scope of the utility model.

Claims

1. A capacitor-equipped connector for an inverter, used for circuit connection of a new energy vehicle inverter, characterized in that, The connector comprises a copper bar plastic body, a copper bar assembly arranged on the copper bar plastic body, a ceramic capacitor, two film capacitors and a connecting copper base arranged on the copper bar plastic body, the copper bar assembly comprises a positive copper bar, a negative copper bar, a first positive connecting base, a second positive connecting base, a first negative connecting base and a second negative connecting base, the first positive connecting base and the first negative connecting base are respectively connected with a connecting pin of one of the film capacitors, and the other connecting pin of the two film capacitors is connected with the connecting copper base; two connecting pins of the ceramic capacitor are respectively connected with the second positive connecting base and the second negative connecting base.

2. The connector with a capacitor for an inverter according to claim 1, wherein The connecting copper base comprises two copper bases and a connecting hole, the two copper bases and the connecting hole are integrally formed, and the other connecting pin of the two film capacitors is respectively connected with the two copper bases.

3. The connector with a capacitor for an inverter according to claim 1, wherein The connector further comprises a magnetic ring, the copper bar plastic body comprises a magnetic ring accommodating groove, and the magnetic ring is arranged in the magnetic ring accommodating groove; and the slot opening of the magnetic ring accommodating groove is connected with a magnetic ring protection cover.

4. The connector with a capacitor for an inverter according to claim 1, wherein The film capacitors are safety film capacitors, and the ceramic capacitor is a safety ceramic capacitor.

5. The connector with a capacitor for an inverter according to claim 2, wherein The connector further comprises a plurality of bushings, and the bushings are arranged in the connecting hole of the copper bar plastic body to stabilize the connection.

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