Plate-type resistor

Abstract

The utility model discloses a plate-type resistor which comprises a resistor body, the resistor body comprises a plurality of layers of alloy plates which are coaxially arranged, the alloy plates are detachable, the distance between every two adjacent layers of alloy plates is adjustable, each layer of alloy plate is provided with a ceramic ring and a conducting ring, the ceramic rings serve as insulation structures between the layers of alloy plates and are used for separating the plurality of alloy plates, and the conducting rings are used for conducting the plurality of alloy plates. The conducting rings serve as electrical connection structures between the alloy plates and are used for communicating the alloy plates. According to the plate-type resistor disclosed by the utility model, the alloy plates with a multi-layer structure are adopted, the number, the layer distance and the arrangement mode of the alloy plates can be adjusted according to actual pre-charging conditions so as to adapt to working conditions of different energy grades, the suitability is improved, and meanwhile, the whole resistor participates in the energy absorption process as the multi-layer alloy plates are used as the resistor, so that the energy absorption efficiency is improved. And the mass of the alloy plate is relatively large, and the mass of the resistor body formed by the alloy plate is also relatively large, so that the high-energy impact resistance is relatively high.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of medium and high voltage frequency conversion, in particular to a plate resistor. BACKGROUND

[0002] Precharge resistors are commonly used in electrical and electronic systems, especially in power supply and battery circuits, to limit current flow and thereby avoid excessive current flow that can damage circuits and components. Precharge resistors are widely used in circuit systems that require smooth starting, and in the new energy automobile industry, they play a key role in the precharge circuit of motor controllers and high-voltage accessories. There are various types of precharge resistors, including aluminum shell resistors, thermistors, power resistors, and cement resistors. Among them, aluminum shell resistors are more commonly used.

[0003] The existing precharge resistors are mainly used in the new energy field. Due to their structure, resistors of the same shape generally correspond to one energy level working condition, so they have weak adaptability in general. Moreover, the existing precharge resistors have alloy wires that need to be wound on an insulating base, but the volume of the resistor is limited, so the mass of the alloy wire is limited, resulting in limited energy absorption and weak energy impact resistance. SUMMARY

[0004] The purpose of the utility model is to solve the problems in the background art and provide a plate resistor.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A plate resistor includes: a resistor body, the resistor body includes multiple layers of coaxially arranged alloy plates, the alloy plates are detachable, the spacing between adjacent two layers of alloy plates is adjustable, each layer of alloy plates is provided with a porcelain ring and a conductive ring, the porcelain ring serves as an insulating structure between each layer of alloy plates to separate a plurality of alloy plates, and the conductive ring serves as an electrical connection structure between each layer of alloy plates to connect a plurality of alloy plates.

[0007] As a further solution of the utility model: it further includes a plurality of insulating sleeves, the insulating sleeves vertically penetrate the alloy plates, and the porcelain ring and the conductive ring on the same axis are sleeved on the insulating sleeves.

[0008] As a further solution of the utility model: a screw rod is arranged in the insulating sleeve, and the screw rod is connected to an insulator.

[0009] As a further solution of the utility model: the insulator is provided with a second assembly hole and a third assembly hole, and the screw rod is installed at the third assembly hole.

[0010] As a further scheme of the utility model: the top and bottom of the porcelain ring are provided with the insulating washer.

[0011] As a further scheme of the utility model: the alloy plate of the top layer and the alloy plate of the bottom layer are provided with the leading tap, and the leading tap is used as the electrical interface.

[0012] As a further scheme of the utility model: the top of the screw rod is connected with the top plate, the top plate is the insulating plate, and a plurality of insulating washers and porcelain rings are arranged between the insulating plate and the alloy plate.

[0013] As a further scheme of the utility model: the outer diameter size of the insulating sleeve is matched with the inner diameter of the porcelain ring.

[0014] As a further scheme of the utility model: the outer diameter size of the insulating sleeve is matched with the inner diameter of the conductive ring.

[0015] As a further scheme of the utility model: the inner diameter size of the insulating sleeve is matched with the outer diameter size of the screw rod.

[0016] The utility model discloses the beneficial effect:

[0017] In the utility model, the plate type resistor adopts the alloy plate of multilayer structure, can adjust the quantity, layer distance and arrangement of alloy plate according to actual precharge condition, adapts to the working condition of different energy level, improves the adaptability, and simultaneously, the multilayer alloy plate is used as the resistance, so that the whole resistance participates in the process of absorbing energy, the quality of alloy plate is larger, the quality of the resistance body formed by it is also larger, so the ability of resisting high energy impact is stronger. BRIEF DESCRIPTION OF DRAWINGS

[0018] The utility model will be further described below in combination with the drawings.

[0019] Figure 1 It is the structure schematic view of the plate type resistor of the utility model;

[0020] Figure 2 It is the side view of the plate type resistor of the utility model;

[0021] Figure 3 It is Figure 1 The top view of the bottom plate in it;

[0022] Figure 4 It is Figure 1 The partial sectional view of the insulator in it;

[0023] Figure 5 It is Figure 2 The structure schematic view of A-A section in it;

[0024] Figure 6 It isFigure 5 Enlarged view at A.

[0025] In the figure:

[0026] 1, bottom plate; 11, mounting hole; 12, first assembly hole; 2, insulator; 21, second assembly hole; 22, third assembly hole; 3, screw; 4, insulating sleeve; 5, alloy plate; 6, porcelain ring; 7, conductive ring; 8, top plate. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0028] Please refer to Figures 1-4 The utility model discloses a plate resistor, which comprises a bottom plate 1, wherein the bottom plate 1 is provided with a mounting hole 11 for mounting and fixing a resistor. A plurality of first assembly holes 12 are formed in the top of the bottom plate 1 for fixing an insulator 2. An electric resistance body is arranged above the insulator 2, and the electric resistance body comprises a plurality of layers of coaxially arranged alloy plates 5. The top layer of alloy plates 5 and the bottom layer of alloy plates 5 are both provided with a lead-out tap as an electrical interface. The alloy plates 5 are detachable, and the spacing between the adjacent two layers of alloy plates 5 is adjustable.

[0029] Among them, please refer to Figure 5 As shown in the figure, a porcelain ring 6 and a conductive ring 7 are arranged on each layer of alloy plates 5. The porcelain ring 6 is used as an insulating structure between each layer of alloy plates 5 to separate the plurality of alloy plates 5, and the conductive ring 7 is used as an electrical connection structure between each layer of alloy plates 5 to connect the plurality of alloy plates 5. At least one conductive ring 7 is arranged on each layer, and the connection state between the plurality of alloy plates 5 can be adjusted by adjusting the arrangement of the conductive ring 7 on each layer.

[0030] Specifically, in the case where only one conductive ring 7 is arranged on each layer, the plurality of alloy plates 5 are in a series connection structure. The arrangement of the conductive ring 7 on each layer can be adjusted, for example, one conductive ring 7 is arranged on one layer, and a plurality of conductive rings 7 are arranged on the adjacent layers, that is, the plurality of alloy plates 5 form a series-parallel connection structure, so as to realize the adjustment of the resistance value of the electric resistance body. The adjustment of the resistance value of the electric resistance body includes but is not limited to this mode, and can also be realized by changing the material, thickness, shape and number of the alloy plates 5.

[0031] It should be noted that the separation effect of the porcelain ring 6 on the alloy plate 5 cannot be replaced by using the conductive ring 7. In the case of replacing the porcelain ring 6 with the conductive ring 7, the several alloy plates 5 are connected in parallel through the plurality of conductive rings 7 arranged in each layer, which limits the upper limit of the resistance value of the resistance body.

[0032] Please refer to Figures 4-6 As shown in the figure, the plate resistor further includes a plurality of insulating sleeves 4 vertically penetrating the alloy plate 5, and the porcelain ring 6 and the conductive ring 7 on the same axis are sleeved on the surface of the insulating sleeve 4, and the top and bottom of the porcelain ring 6 are provided with insulating washers. The screw rod 3 is arranged in the insulating sleeve 4, the insulating rod 2 is connected to the screw rod 3, the insulating rod 2 is provided with a second assembly hole 21 and a third assembly hole 22, the screw rod 3 is installed at the third assembly hole 22, the second assembly hole 22 corresponds to the first assembly hole 12 of the bottom plate 1, and the bottom plate 1 and the insulating rod 2 are fixed by bolts.

[0033] The outer diameter size b of the insulating sleeve 4 is matched with the inner diameter of the porcelain ring 6 and the conductive ring 7, and the inner diameter size a of the insulating sleeve 4 is matched with the outer diameter size of the screw rod 3.

[0034] Please refer to Figures 1-2 As shown in the figure, the top of the screw rod 3 is further connected to the top plate 8, and the top plate 8 is an insulating plate. A plurality of insulating washers and porcelain rings 6 are arranged between the insulating plate and the alloy plate 5.

[0035] In this embodiment, the plate resistor adopts a multi-layer structure of the alloy plate 5. The number, layer distance and arrangement of the alloy plate 5 can be adjusted according to the actual pre-charging conditions to adapt to different energy levels of the working conditions, thereby improving the adaptability. The insulating sleeve 4 and the insulating rod 2 form a double-layer insulation, which has a high-voltage resistance characteristic (the normal voltage resistance of the aluminum shell resistor and the power resistor in the prior art is generally 3000V, and the maximum voltage resistance does not exceed 10KV, which is difficult to meet the requirements of high-voltage systems). Moreover, the multi-layer alloy plate 5 as a resistor makes the whole resistance participate in the process of absorbing energy. The mass of the alloy plate 5 is large, and the mass of the resistance body formed by the alloy plate 5 is also large, so the ability to resist high-energy impact is strong (the alloy wire is generally used in the prior art, and the alloy wire is wound on the insulating base. Because the volume of the resistance is limited, the mass of the alloy wire is also limited).

[0036] The plate resistor provided in the present application can be used as a pre-charging resistor for high-energy impact in a medium-high voltage (10KV high voltage and above) large variable frequency device. The good adaptability, high-voltage resistance characteristic, high-energy impact resistance and low inductance compensate for the defects in the prior art.

[0037] The working principle of the utility model discloses: the plate resistor adopts the multilayer structure's alloy plate 5, can adjust the total layer number and the layer and layer's spacing of alloy plate 5 according to actual precharge condition, to adapt to the working condition of different energy level, multilayer alloy plate 5 as resistance, make the whole resistance all participate in the process of absorbing energy, the mass of alloy plate 5 is bigger, the mass of the resistance body formed by it is also bigger, therefore the ability of high energy impact resistance is stronger.

[0038] The above has carried out the detailed explanation to one embodiment of the utility model, but the content described is only the preferred embodiment of the utility model, can not be considered for limiting the implementation scope of the utility model. All equivalent changes and improvements made in the utility model application scope should still belong to the claim coverage range of the utility model.

Claims

1. A plate resistor, characterized by The utility model relates to a kind of resistance, including: Resistance body, the resistance body includes multilayer coaxial arrangement alloy sheet (5), the alloy sheet (5) is detachable, the spacing between two adjacent layers of the alloy sheet (5) is adjustable; Each layer of the alloy sheet (5) is provided with porcelain ring (6) and conducting ring (7), the porcelain ring (6) is as the insulating structure between each layer of the alloy sheet (5) for separating several alloy sheets (5), the conducting ring (7) is as the electrical connection structure between each layer of the alloy sheet (5) for several alloy sheets (5) are communicated.

2. A plate resistor according to claim 1, characterised in that It further includes several insulating bushings (4), the insulating bushings (4) vertically pass through the alloy sheet (5), the porcelain ring (6) and the conducting ring (7) on the same axis are sleeved in the insulating bushing (4).

3. A plate resistor according to claim 2, wherein The screw rod (3) is provided in the insulating bushing (4), and the screw rod (3) is connected to the insulator (2).

4. A plate resistor according to claim 3, wherein The insulator (2) is provided with second assembly hole (21) and third assembly hole (22), and the screw rod (3) is installed at the third assembly hole (22).

5. A plate resistor according to claim 1, wherein The top and bottom of the porcelain ring (6) are provided with insulating washers.

6. A plate resistor according to claim 1, wherein The top layer alloy sheet (5) and the bottom layer alloy sheet (5) are provided with outgoing taps, and the outgoing taps are used as electrical interfaces.

7. A plate resistor according to claim 3, wherein The top of the screw rod (3) is connected with a top plate (8), and the top plate (8) is an insulating plate.

8. A plate resistor according to claim 2, wherein The outer diameter of the insulating bushing (4) is matched with the inner diameter of the porcelain ring (6).

9. A plate resistor according to claim 2, wherein The outer diameter of the insulating bushing (4) is matched with the inner diameter of the conducting ring (7).

10. A plate resistor according to claim 3, wherein The inner diameter of the insulating bushing (4) is matched with the outer diameter of the screw rod (3).

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