Current detection device

Abstract

The utility model provides a current detection device. The current detection device comprises a positioning plate, a base, a top cover, a shielding cover and a sensing circuit board, one end of the positioning plate is connected with the electric equipment, and the other end of the positioning plate sequentially penetrates through the base, the shielding cover and the top cover; one side of the base protrudes, and a cavity for accommodating the shielding case and the sensing circuit board is arranged in the base; one side of the top cover is matched with the protrusion of the base, the shielding cover and the sensing circuit board are both embedded into the cavity of the base, when the base and the top cover are fixed to the surface of the positioning plate through the connecting piece, the shielding cover is arranged on the periphery of the sensing circuit board in a surrounding mode, and the shielding cover and the sensing circuit board are clamped between the base and the top cover. According to the utility model, the sensing circuit board is stably embedded into the shielding cover in the cavity of the base, and after the base and the top cover are respectively fixed on the positioning plate, the peripheral surface of the sensing circuit board is shielded by the shielding cover, so that a protective layer for shielding electromagnetic signals is formed on the periphery of the sensing circuit board.

Description

Technical Field

[0001] The utility model belongs to the technical field of current sensing of new energy vehicles, and in particular relates to a current detection device. Background Art

[0002] At present, with the development of industrial energy storage and new energy vehicles, the market for current detection terminal products is growing. The requirements for such products in the fields of specific industrial equipment and new energy vehicles are also getting higher and higher, requiring not only a delicate and compact appearance, but also high detection accuracy, high protection level and other functions. For the above-mentioned fields, especially the field of new energy vehicles, how to improve installation accuracy while reducing the influence of electromagnetic and geomagnetic fields, compactness and lightweight are one of the technical problems that current current detection terminal products need to solve. Utility Model Content

[0003] In order to solve the problem described in the background technology of how to improve installation accuracy, compactness and lightness under the premise of reducing electromagnetic and geomagnetic influences, the utility model proposes the following technical solutions:

[0004] A current detection device comprises: a positioning plate, a base, a top cover, a shielding cover and a sensor circuit board; one end of the positioning plate is connected to an electrical device, and the other end of the positioning plate passes through the base, the shielding cover, the top cover in sequence and is connected to a cable; one side of the base is raised, and a cavity for accommodating the shielding cover and the sensor circuit board is provided in the base; one side of the top cover matches the raised portion of the base, and the shielding cover and the sensor circuit board are both embedded in the cavity of the base, and when the base and the top cover are fixed to the surface of the positioning plate by a connecting piece, the shielding cover is arranged around the outer periphery of the sensor circuit board, and the shielding cover and the sensor circuit board are clamped between the base and the top cover.

[0005] Among them, one side of the base close to the top cover is recessed to form a limiting groove, and the limiting groove is arranged around the outer periphery of the protrusion; when the base and the top cover are fixed to the surface of the positioning plate through a connecting piece, one end of the shielding cover is inserted into the limiting groove.

[0006] Furthermore, a partition parallel to the positioning plate is provided in the cavity of the base; the partition divides the cavity of the base into an upper space and a lower space; one end of the positioning plate passes through the lower space, and one end of the sensor circuit board is embedded in the upper space.

[0007] Furthermore, the cross section of the upper space is step-shaped, and the inner wall of the upper space is provided with a first notch.

[0008] Furthermore, a second notch is provided on an inner wall of the top cover on one side close to the base, and a direction of the first notch is opposite to a direction of the second notch.

[0009] Furthermore, a socket connected to a power source is provided on the surface of the sensor circuit board, and when the base and the top cover are fixed to the surface of the positioning plate through a connector, the socket passes through the first notch and the second notch in sequence.

[0010] Furthermore, the surface of the positioning plate is provided with a plurality of conductive holes for connecting the electrical equipment and a plurality of positioning holes for fixing the base or the top cover.

[0011] Furthermore, a first mounting hole is provided on the surface of the base, and a second mounting hole is provided on the surface of the top cover. When the base and the top cover are fixed to the surface of the positioning plate through a connecting member, the first mounting hole and the second mounting hole are respectively aligned with one of the positioning holes.

[0012] Beneficial effect: The utility model stably embeds the shielding cover in the base cavity through the sensor circuit board. After the base and the top cover are respectively fixed to the positioning plate, the outer peripheral surface of the sensor circuit board is shielded by the shielding cover, thereby forming a protective layer for shielding electromagnetic signals on the periphery of the sensor circuit board. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of a current detection device according to an embodiment of the utility model, wherein the shielding cover is blocked due to assembly;

[0014] Figure 2 The figure is a schematic diagram of the exploded structure of a current detection device according to an embodiment of the utility model. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the present application clearer, the present invention will be described in further detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0016] It should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

[0017] Figure 1It is a schematic diagram of the three-dimensional structure of a current detection device according to an embodiment of the utility model, wherein the shielding cover is blocked due to assembly.

[0018] Reference Figure 1 According to an embodiment of the utility model, a current detection device includes: a positioning plate 1, a base 2, a top cover 3, a shielding cover 4 and a sensor circuit board 5. One end of the positioning plate 1 is connected to the electrical equipment, and the other end of the positioning plate 1 passes through the base 2, the shielding cover 4, the top cover 3 in sequence and is connected to the cable. One side of the base 2 is raised, and a cavity 21 for accommodating the shielding cover 4 and the sensor circuit board 5 is provided in the base 2. One side of the top cover 3 matches the protrusion of the base 2, and the shielding cover 4 and the sensor circuit board 5 are both embedded in the cavity 21 of the base 2. When the base 2 and the top cover 3 are fixed to the surface of the positioning plate 1 through a connector, the shielding cover 4 is arranged around the outer periphery of the sensor circuit board 5, and the shielding cover 4 and the sensor circuit board 5 are clamped between the base 2 and the top cover 3.

[0019] After the cable connected to the positioning board 1 is powered on, the current signal is guided from the positioning board 1 to the relevant electrical equipment along the cable. In this process, the shielding cover 4 is always fixed on the outer periphery of the sensor circuit board 5. Among them, the sensor chip in the sensor circuit board 5 has a strong anti-interference effect on the electromagnetic signal propagating along the extension direction of the positioning board 1, and the shielding cover 4 mainly acts on the electromagnetic signal propagating perpendicular to the extension direction of the positioning board 1, thereby shielding the electromagnetic signal transmitted from the outside to the sensor circuit board 5.

[0020] Figure 2 The figure is a schematic diagram of the exploded structure of a current detection device according to an embodiment of the utility model.

[0021] Reference Figure 2 Specifically, the part of the base 2 close to the top cover 3 is raised along the length direction of the base 2, thereby forming a two-stage structure with one long and one short. An annular limiting groove 22 is provided on the outer periphery of the protrusion of the base 2, and a partition 23 is provided on the inner cavity wall of the protrusion of the base 2 to divide the cavity 21 of the base 2 into an upper space 211 and a lower space 212. When the base 2 and the top cover 3 are fixed to the surface of the positioning plate 1 through the connecting piece, the shielding cover 4 is embedded in the limiting groove 22, one end of the sensor circuit board 5 is inserted into the upper space 211, and one end of the positioning plate 1 passes through the lower space 212.

[0022] Preferably, in order to further strengthen the stability of the sensor circuit board 5 in the base 2, the cross-section of the upper space 211 in this embodiment is trapezoidal. Among them, a first notch 24 is provided on the outer peripheral surface of the upper space 211 on the side away from the positioning plate 1, and a second notch 31 is provided on the surface of the top cover 3 on the side away from the positioning plate 1. The orientation of the first notch 24 is opposite to that of the second notch 31. When the base 2 and the top cover 3 are respectively fixed to the surface of the positioning plate 1 by connecting members, the first notch 24 is located between the second notch 31 and the positioning plate 1, and the first notch 24 and the second notch 31 are stacked up and down to form a complete rectangular notch.

[0023] A socket 51 connected to a power source is provided on the surface of the sensor circuit board 5. When the base 2 and the top cover 3 are respectively fixed to the surface of the positioning plate 1 through connectors, the socket 51 passes through the first notch 24 and the second notch 31 in sequence. In this embodiment, the size of the first notch 24 and the size of the second notch 31 are both matched with the socket 51. After one end of the sensor circuit board 5 is inserted into the upper space 211, the outer wall of the first notch 24 abuts against the port of the shielding cover 4, so that the entire shielding cover 4 is fixed in the limiting groove 22.

[0024] The surface of the positioning plate 1 is provided with a plurality of conductive holes 11 for connecting electrical equipment and a plurality of positioning holes 12 for fixing the base 2 and the top cover 3 respectively. A first mounting hole 25 matching the positioning hole 12 is provided on one side of the base 2 close to the positioning plate 1, and a second mounting hole 32 matching the positioning hole is provided on one side of the top cover 3 close to the positioning plate 1. When the first mounting hole 25 and the second mounting hole 32 are respectively aligned with one of the positioning holes 12, the relative positions of the base 2 and the top cover 3 on the surface of the positioning plate 1 are fixed by inserting a connector into the corresponding positioning hole 12. When the base 2 and the top cover 3 are not fixed on the surface of the positioning plate 1, the base 2 and the positioning plate 1 can be moved on the positioning plate 1 according to demand, so as to select the position of the positioning hole 12 suitable for the size of the sensor circuit board 5. In the present application, the connector is a threaded fastener such as a bolt and a screw, and the positioning plate 1 and the shielding cover 4 are made of conductive materials, and the base 2 and the top cover 3 are made of insulating materials. Preferably, in the present embodiment, the material of the base 2 and the top cover 3 is reinforced ABS plastic with a waterproof grade of IP65.

[0025] In summary, the utility model stably embeds the shielding cover in the base cavity through the sensor circuit board. After the base and the top cover are respectively fixed to the positioning plate, the outer peripheral surface of the sensor circuit board is blocked by the shielding cover, thereby forming a protective layer for shielding electromagnetic signals on the periphery of the sensor circuit board.

[0026] The above description is of certain embodiments of the invention. Other embodiments are within the scope of the following claims.

[0027] The terms "exemplary," "example," and the like used throughout this specification mean "used as an example, instance, or illustration" and do not mean "preferred" or "advantageous" over other embodiments. The detailed description includes specific details for the purpose of providing an understanding of the described techniques. However, these techniques can be implemented without these specific details. In some instances, in order to avoid obscuring the concepts of the described embodiments, well-known structures and devices are shown in block diagram form.

[0028] The optional implementation modes of the embodiments of the utility model are described in detail above in conjunction with the accompanying drawings. However, the embodiments of the utility model are not limited to the specific details in the above implementation modes. Within the technical concept of the embodiments of the utility model, the technical scheme of the embodiments of the utility model can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the embodiments of the utility model.

[0029] The above description of the contents of this specification is provided to enable any person of ordinary skill in the art to implement or use the contents of this specification. Various modifications to the contents of this specification will be apparent to those of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of protection of the contents of this specification. Therefore, the contents of this specification are not limited to the examples and designs described herein, but are consistent with the widest range of principles and novel features disclosed herein.

Claims

1. A current detection device, characterized in that: include: A positioning plate (1), a base (2), a top cover (3), a shielding cover (4) and a sensor circuit board (5); one end of the positioning plate (1) is connected to an electrical device, and the other end of the positioning plate (1) passes through the base (2), the shielding cover (4) and the top cover (3) in sequence and is connected to a cable; one side of the base (2) is raised, and a cavity (21) for accommodating the shielding cover (4) and the sensor circuit board (5) is provided in the base (2); one side of the top cover (3) matches the raised portion of the base (2), and the shielding cover (4) and the sensor circuit board (5) are both embedded in the cavity (21) of the base (2); when the base (2) and the top cover (3) are fixed to the surface of the positioning plate (1) through a connecting piece, the shielding cover (4) is arranged around the outer periphery of the sensor circuit board (5), and the shielding cover (4) and the sensor circuit board (5) are clamped between the base (2) and the top cover (3).

2. A current detection device according to claim 1, characterized in that: A side of the base (2) close to the top cover (3) is recessed to form a limiting groove (22), and the limiting groove (22) is arranged around the outer periphery of the protrusion; when the base (2) and the top cover (3) are fixed to the surface of the positioning plate (1) through a connecting piece, one end of the shielding cover (4) is inserted into the limiting groove (22).

3. A current detection device according to claim 1, characterized in that: A partition plate (23) parallel to the positioning plate (1) is provided in the cavity (21) of the base (2); the partition plate (23) divides the cavity (21) of the base (2) into an upper space (211) and a lower space (212); one end of the positioning plate (1) passes through the lower space (212), and one end of the sensor circuit board (5) is embedded in the upper space (211).

4. A current detection device according to claim 3, characterized in that: The cross section of the upper space (211) is in a step shape, and the inner wall of the upper space (211) is provided with a first notch (24).

5. A current detection device according to claim 4, characterized in that: A second notch (31) is provided on the inner wall of the top cover (3) on a side close to the base (2), and the orientation of the first notch (24) is opposite to that of the second notch (31).

6. A current detection device according to claim 5, characterized in that: The surface of the sensor circuit board (5) is provided with a socket (51) connected to a power source, and when the base (2) and the top cover (3) are fixed to the surface of the positioning plate (1) via a connecting piece, the socket (51) passes through the first notch (24) and the second notch (31) in sequence.

7. A current detection device according to any one of claims 1 to 6, characterized in that: The surface of the positioning plate (1) is provided with a plurality of conductive holes (11) for connecting the electrical equipment and a plurality of positioning holes (12) for fixing the base (2) or the top cover (3).

8. A current detection device according to claim 7, characterized in that: The surface of the base (2) is provided with a first mounting hole (25), and the surface of the top cover (3) is provided with a second mounting hole (32); when the base (2) and the top cover (3) are fixed to the surface of the positioning plate (1) via a connecting member, the first mounting hole (25) and the second mounting hole (32) are respectively aligned with one of the positioning holes (12).

Images