Electrical terminal and electrical equipment

Abstract

The utility model belongs to the technical field of electrical connectors, and discloses an electrical terminal which comprises a terminal shell, at least two conductive copper bars, a grounding copper bar and at least two capacitors, one end of each conductive copper bar is fixed in the terminal shell, and the other end of each conductive copper bar extends out; the side, provided with the conductive copper bar, of the terminal shell is provided with an installation plane, and the grounding copper bar is arranged on the installation plane. And one pin of each capacitor is connected with one conductive copper bar, and the other pin of each capacitor is connected with the grounding copper bar. According to the utility model, the capacitor and the terminal are combined into a whole to replace a port filter plate, so that the internal space of electrical equipment is effectively saved, and production and maintenance are facilitated; according to the utility model, the terminals are connected to the housing of the electrical equipment, so that the filtering effect is better than that of a conventional port, and radiation coupling interference in the electrical equipment can be avoided; the capacitor is arranged between the conductive copper bar and the grounding copper bar, and the grounding pin of the capacitor is shorter, so that the impedance of a filtering line can be ensured to be as small as possible, and EMI optimization is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of electrical connector, especially relates to an electrical terminal and electrical equipment. BACKGROUND

[0002] In prior art, for EMI (Electromagnetic Interference) test, the scheme of adding filter board in electrical equipment is usually adopted to optimize, as shown in the figure, the filter board includes first capacitor and second capacitor, one end of the first capacitor is connected with the positive pole of power supply, the other end is grounded, one end of the second capacitor is connected with the negative pole of power supply, the other end is grounded. Figure 1

[0003] The main defects of the prior art are as follows: 1, the filter board occupies the internal space of the electrical equipment, and affects assembly; 2, the filter board exists in the internal space of the electrical equipment and is interfered by the radiation in the electrical equipment, so that the capacitor cannot be effectively filtered, and the EMI result of the whole machine is affected. UTILITY MODEL CONTENTS

[0004] In view of the above problems, the utility model provides an electrical terminal and electrical equipment, which adopts the following technical scheme:

[0005] An electrical terminal includes a terminal shell, at least two conductive copper bars, a grounding copper bar and at least two capacitors; wherein one end of each conductive copper bar is fixed in the terminal shell, and the other end extends out; the terminal shell has a mounting plane on one side of the conductive copper bar, and the grounding copper bar is arranged on the mounting plane; one pin of each capacitor is connected with one conductive copper bar, and the other pin is connected with the grounding copper bar.

[0006] Further, the terminal shell has at least two cavities, and at least two mounting spaces are arranged on the outer side of the mounting plane; one end of each conductive copper bar is fixed in one cavity, and the other end is fixed in one mounting space.

[0007] Further, a plurality of partitions are arranged on the mounting plane, and one mounting space is formed between two adjacent partitions.

[0008] Further, an installation table is arranged in each cavity, and a connecting plate is arranged between two adjacent partitions; one end of each conductive copper bar is detachably connected with the installation table in one cavity through a first connecting piece, and the other end is detachably connected with the connecting plate in one mounting space through a second connecting piece.

[0009] Further, a sealing groove is arranged on the mounting plane and located at the periphery of the plurality of partitions, and a sealing ring is arranged in the sealing groove. ​

[0010] Further, a plurality of first through holes are arranged on the mounting plane and located outside the sealing groove, the grounding copper bar is provided with a second through hole at a position corresponding to each first through hole, and the fastener passes through the first through hole and the second through hole to fix the terminal shell and the grounding copper bar.

[0011] Further, the grounding copper bar is annular and arranged on an outer peripheral edge of the mounting plane.

[0012] Further, an installation plate is arranged in each mounting space, and the capacitor is fixedly arranged on the installation plate.

[0013] Further, a wire passing hole is arranged at each cavity and located at the bottom of the terminal shell.

[0014] The utility model also provides an electrical equipment which comprises the electrical terminal.

[0015] The utility model has the advantages of:

[0016] 1. The terminal integrates the capacitor and the terminal into one, replaces the port filter board, effectively saves the internal space of the electrical equipment, and is more conducive to production and maintenance.

[0017] 2. The terminal is connected to the shell of the electrical equipment, has better port filtering effect than the prior art, and can avoid radiation coupling interference in the equipment.

[0018] 3. The terminal is provided with the capacitor between the conductive copper bar and the grounding copper bar, the grounding pin of the capacitor is shorter, the filter line impedance can be ensured to be as small as possible, and EMI optimization is more conducive.

[0019] Other features and advantages of the utility model will be described in the following description, and some of them will become apparent from the description, or will be understood by implementing the utility model. The purposes and other advantages of the utility model can be achieved and obtained by the structures indicated in the description and the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme in the embodiments of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the utility model, and those skilled in the art can also obtain other drawings according to these drawings without creating creative labor.

[0021] Figure 1 The distribution schematic diagram of the internal filter board of the electrical equipment of the prior art is shown.

[0022] Figure 2 A structural schematic diagram of an electrical terminal is shown according to an embodiment of the present application;

[0023] Figure 3 An internal structure schematic diagram of a terminal shell is shown according to an embodiment of the present application;

[0024] Figure 4 An installation schematic diagram of a conductive copper bar is shown according to an embodiment of the present application;

[0025] Figure 5 A sectional view of a middle A-A section is shown. Figure 4

[0026] In the figure: 1, terminal shell; 2, conductive copper bar; 3, installation plane; 4, grounding copper bar; 5, capacitor; 6, cavity; 7, installation space; 8, partition plate; 9, installation table; 10, connecting plate; 11, installation plate; 12, sealing groove; 13, sealing ring; 14, first through hole; 15, wire hole. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the embodiments of the present application more clear, the technical scheme in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present application.

[0028] It should be noted that the terms "first", "second", and the like in the present application are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein. In the present application, the terms "up", "down", "left", "right", "front", "back", "top", "bottom", "in", "out", "middle", "vertical", "horizontal", "lateral", "longitudinal", and the like indicate the orientation or positional relationship shown in the drawings.

[0029] The electrical terminal provided by the embodiments of the present application can effectively save the internal space of the electrical equipment compared with the traditional filter board, is more conducive to production and maintenance, avoids the interference of the filter capacitor by the internal radiation of the electrical equipment while ensuring safety and waterproof, and can ensure that the impedance of the filter circuit is as small as possible, which is more conducive to EMI optimization.

[0030] As Figure 2 ​As shown, an electrical terminal includes a terminal housing 1, at least two conductive copper busbars 2, a grounding copper busbar 4, and at least two capacitors 5. The terminal housing 1 is made of an insulating material, such as plastic. The specific shape of the terminal housing 1 is not limited and can be set to any shape as needed.

[0031] One end of each conductive copper busbar 2 is fixed inside the terminal housing 1 for connection with external cables. The other end of each conductive copper busbar 2 extends out. When the terminal is installed on the electrical equipment, the other end of each conductive copper busbar 2 is located inside the electrical equipment, which facilitates connection with the internal cables of the electrical equipment.

[0032] The terminal housing 1 has a mounting plane 3 on one side of the conductive copper busbar 2, and the grounding copper busbar 4 is mounted on the mounting plane 3.

[0033] One pin of each capacitor 5 is connected to a conductive copper busbar 2, and the other pin is connected to a grounded copper busbar 4. The capacitor 5 is connected between the high voltage and the ground, forming a filter circuit.

[0034] like Figure 3 As shown, for example, the terminal housing 1 has at least two cavities 6, wherein the number of cavities 6 and the number of conductive copper busbars 2 are equal to the number of phases of the terminals. The conductive copper busbars 2 are used to connect high voltage. For example, when the terminals are two-phase, two cavities 6 and two conductive copper busbars 2 are provided; when the terminals are three-phase, three cavities 6 and three conductive copper busbars 2 are provided.

[0035] like Figure 2 and Figure 4 As shown, at least two mounting spaces 7 are provided on the outer side of the mounting plane 3, corresponding to the position of each cavity 6. One end of each conductive copper busbar 2 is fixed in a cavity 6, and the other end is fixed in a mounting space 7. For example, multiple partitions 8 are provided on the mounting plane 3, and a mounting space 7 is formed between two adjacent partitions 8.

[0036] The installation space 7 is formed by multiple partitions 8, which has a simple structure. For example, the partitions 8 are made of insulating material and can also serve as electrical isolation.

[0037] like Figure 5 As shown, for example, each cavity 6 is provided with a mounting platform 9, such as Figure 2 and Figure 5 As shown, a connecting plate 10 is provided between two adjacent partitions 8. The two sides of the connecting plate 10 are respectively connected to the two adjacent partitions 8. One end of each conductive copper busbar 2 is detachably connected to the mounting platform 9 in a cavity 6 through a first connector, and the other end is detachably connected to the connecting plate 10 in an installation space 7 through a second connector.

[0038] The installation table 9 and the connecting plate 10 are provided to support both ends of the conductive copper bar 2, and both ends of the conductive copper bar 2 are detachably connected with the installation table 9 and the connecting plate 10, so that the installation and replacement are facilitated.

[0039] For example, the first connecting piece and the second connecting piece each include a bolt and a nut, the installation table 9 is fixedly provided with the bolt, and one end of the conductive copper bar 2 is fixed on the installation table 9 through the nut; the connecting plate 10 is provided with a bolt hole, and the other end of the conductive copper bar 2 is fixed on the connecting plate 10 through the bolt, the bolt hole and the nut in sequence.

[0040] For example, the first connecting piece and the second connecting piece each include a bolt, the installation table 9 is provided with a threaded hole, the bolt passes through one end of the conductive copper bar 2 and is connected with the threaded hole on the installation table 9, so that one end of the conductive copper bar 2 is fixed on the installation table 9; the connecting plate 10 is provided with a threaded hole, and the bolt passes through the other end of the conductive copper bar 2 and is connected with the threaded hole on the connecting plate 10, so that the other end of the conductive copper bar 2 is fixed on the connecting plate 10.

[0041] As shown in Figure 2 For example, the installation plane 3 is provided with a ring-shaped sealing groove 12 at the periphery of the plurality of partitions 8, and the sealing groove 12 is provided with an O-shaped sealing ring 13, so that the sealing between the terminal and the electrical equipment is realized.

[0042] As shown in Figure 2 For example, a plurality of first through holes 14 are arranged on the installation plane 3 and located outside the sealing groove 12, the grounding copper bar 4 is provided with a second through hole at a position corresponding to each first through hole 14, for example, two first through holes 14 are arranged on both sides of the installation plane 3 in the length direction, and the grounding copper bar 4 is provided with four second through holes, and a fastener passes through the first through hole 14 and the second through hole to fix the terminal shell 1 and the grounding copper bar 4 on the electrical equipment. For example, the fastener can be a bolt, so that the detachable connection between the terminal and the electrical equipment is realized, and the installation and maintenance are facilitated.

[0043] As shown in Figure 2 The grounding copper bar 4 is used for grounding, for example, the grounding copper bar 4 is arranged at the outer peripheral edge of the installation plane 3, for example, the grounding copper bar 4 is in a ring shape, and when the terminal is connected with the electrical equipment, the grounding copper bar 4 is more fully in contact with the shell of the electrical equipment.

[0044] As shown in Figure 2 and Figure 4 For example, one capacitor 5 is fixedly arranged in each installation space 7, and two pins of the capacitor 5 are weldedly connected with the conductive copper bar 2 and the grounding copper bar 4, or other connection modes can be adopted, and the utility model is not limited in this regard.

[0045] As shown in Figure 2As shown, for example, an installation plate 11 is also arranged in each installation space 7, and the capacitor 5 is fixedly arranged on the installation plate 11, the installation plate 11 is made of insulating material, and the capacitor 5 is packaged with the installation plate 11 by using a later-stage glue packaging technology, so that the heat stress and the safety voltage resistance meet the requirements.

[0046] For example, the installation plate 11 is located between the conductive copper bar 2 and the grounding copper bar 4, so that the distance between the pin of the capacitor 5 and the conductive copper bar 2 and the grounding copper bar 4 is shorter.

[0047] As shown in Figure 3 and Figure 5 As shown, for example, the bottom of the terminal shell 1 is also provided with a wire passing hole 15 at the position of each cavity 6, and the external cable passes through the wire passing hole 15 and is connected with the conductive copper bar 2.

[0048] For example, the capacitor 5 can be a Y capacitor or an adjustable capacitor, and for different frequency spectrum characteristics of devices, the corresponding impedance can be matched by adjusting the capacitance value of the capacitor 5 on the terminal, so as to adapt to various device radiation improvement.

[0049] The utility model embodiment further provides an electrical equipment comprising the above electrical terminal, for example, the electrical equipment comprises an energy storage converter.

[0050] Taking the terminal of the utility model embodiment used in a PCS (Power Conversion System, energy storage converter) as an example, the working principle for improving electromagnetic interference is described: the mounting plane 3 of the terminal is connected with the PCS shell, the plurality of installation spaces 7 outside the mounting plane 3 of the terminal are located inside the PCS shell, the grounding copper bar 4 in the mounting plane 3 is in contact with the PCS shell made of metal, so that the capacitor 5 is in communication with the PCS shell, and filtering is realized through the capacitor 5. Compared with the traditional filter board, the capacitor 5 grounding pin on the terminal is shorter, which can ensure that the filter circuit impedance is as small as possible, and is more conducive to EMI optimization.

[0051] The terminal of the utility model embodiment integrates the capacitor 5 and the terminal into one, ensures safety and waterproof, and can be used for alternating current or direct current, and the capacitor 5 is connected with the conductive copper bar 2 and the grounding copper bar 4 on the PCS shell, and the filtering of high-frequency and low-frequency interference signals is realized through the charging and discharging of the capacitor 5 and different capacitance values, so that the filtering characteristics of the capacitor 5 are not disturbed by the internal coupling noise of the electrical equipment.

[0052] The terminal of the utility model replaces the port filter board, effectively saves the space in the PCS shell, and is more conducive to production and maintenance; the terminal of the utility model is connected to the shell (for example, the PCS shell) of the electrical equipment, and compared with the existing port filtering effect, the terminal can avoid internal radiation coupling interference of the equipment.

[0053] Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features therein can be replaced equivalently, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the utility model.

Claims

1. An electrical terminal, characterized by, The terminal shell (1), at least two conductive copper bars (2), a grounding copper bar (4) and at least two capacitors (5) are included. One end of each of the conductive copper bars (2) is fixed in the terminal shell (1), and the other end extends out; the terminal shell (1) has a mounting plane (3) on one side of the conductive copper bars (2), and the grounding copper bar (4) is arranged on the mounting plane (3); one pin of each capacitor (5) is connected with one of the conductive copper bars (2), and the other pin is connected with the grounding copper bar (4).

2. The electrical terminal of claim 1, wherein, The terminal shell (1) has at least two cavities (6) and at least two mounting spaces (7) arranged outside the mounting plane (3); one end of each of the conductive copper bars (2) is fixed in one of the cavities (6), and the other end is fixed in one of the mounting spaces (7).

3. The electrical terminal of claim 2, wherein, A plurality of partitions (8) are arranged on the mounting plane (3), and each mounting space (7) is formed between two adjacent partitions (8).

4. The electrical terminal of claim 3, wherein, An installation platform (9) is arranged in each of the cavities (6), and a connecting plate (10) is arranged between two adjacent partitions (8); one end of each of the conductive copper bars (2) is detachably connected with the installation platform (9) in one of the cavities (6) through a first connecting member, and the other end is detachably connected with the connecting plate (10) in one of the mounting spaces (7) through a second connecting member.

5. The electrical terminal of claim 4, wherein, A sealing groove (12) is arranged on the mounting plane (3) and located at the periphery of the plurality of partitions (8), and a sealing ring (13) is arranged in the sealing groove (12).

6. The electrical terminal of claim 5, wherein, A plurality of first through holes (14) are arranged on the mounting plane (3) and located outside the sealing groove (12), and the grounding copper bar (4) is provided with a second through hole at a position corresponding to each first through hole (14); a fastener passes through the first through hole (14) and the second through hole to fix the terminal shell (1) and the grounding copper bar (4).

7. The electrical terminal of claim 1, wherein, The grounding copper bar (4) is annular and arranged at the outer peripheral edge of the mounting plane (3).

8. An electrical terminal according to any one of claims 2-6, wherein: An installation plate (11) is arranged in each of the mounting spaces (7), and the capacitor (5) is fixedly arranged on the installation plate (11).

9. An electrical terminal according to any of claims 2-6, wherein: A wire passing hole (15) is arranged at each of the cavities (6), and the wire passing hole (15) is located at the bottom of the terminal shell (1).

10. An electrical device, characterized by The electrical terminal includes any one of claims 1-9. The electrical terminal includes any one of claims 1-9.

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