Power supply protection device

Abstract

The utility model relates to the technical field of direct current power supply, in particular to a power supply protection device, which comprises a lower shell and an upper shell, a T-shaped cavity is formed inside after the two shells are connected, and the T-shaped cavity comprises a first cavity and a second cavity; the inner surface of the lower shell is connected with a circuit board, the upper surface of the circuit board is provided with a terminal strip and a terminal connecting piece, the terminal strip is located in the second cavity, and the terminal connecting piece is located in the first cavity; current connectors are arranged on the outer sides of the two ends of the first cavity, and mounting supports are arranged on the outer sides of the two ends of the second cavity. The interior of the first cavity is divided into two parts of cavities which are used for accommodating a current input component and a current output component respectively, the two parts of components are arranged separately, and enough wiring spaces are reserved on the two sides of the first cavity, so that internal wiring is more reasonable, and wiring operation is more convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of DC power supply, and specifically relates to a power supply protection device. Background Technique

[0002] The statements in this part only provide background technical information related to the utility model, and do not necessarily constitute prior art.

[0003] A high-power DC power supply system is a system that uses stable direct current for high-power power supply and can be applied in multiple fields such as data center power supply, automated factories, and electric vehicle charging piles. A power supply protection device is usually provided in such a system to ensure that the output direct current is stable and reliable and is not affected by the external environment as much as possible.

[0004] The structure of the power supply protection device takes the circuit board and various components connected to the circuit board as the core components. Due to the modular structure design, when the device is installed in the cabinet, the wiring space for the current input and output parts is limited, making the on-site wiring operation difficult. Content of the Utility Model

[0005] In order to solve the technical problems existing in the above background technique, the utility model provides a power supply protection device, which is internally divided into two cavity parts, respectively serving as the spaces for current input components and current output components. The two spaces form a T shape and are arranged separately, so that the wiring operation is carried out from both sides of the device and extra space is reserved for the incoming line operation.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0007] The utility model provides a power supply protection device, including a lower shell and an upper shell. After the two parts of the shell are connected, a T-shaped cavity is formed inside. The T-shaped cavity includes a first cavity and a second cavity; the inner surface of the lower shell is connected with a circuit board. The upper surface of the circuit board is provided with a terminal block and a terminal connector. The terminal block is located in the second cavity, and the terminal connector is located in the first cavity; current connectors are provided on the outer sides of both ends of the first cavity, and mounting brackets are provided on the outer sides of both ends of the second cavity.

[0008] Further, pressing brackets are provided on the inner sides of both ends of the second cavity. Wire fixing clips for fixing cables are provided on the pressing brackets. Threading holes are provided at both ends of the lower shell, and protective coils are provided on the threading holes.

[0009] Further, the first cavity is adjacent to the second cavity, and the two cavities are connected and communicated. The length of the first cavity is less than that of the second cavity.

[0010] Further, a protection circuit is provided on the circuit board.

[0011] Further, the lower bottom surface of the circuit board is connected to an inductor and a lightning strike sensor.

[0012] Further, the cable passes through the wire threading hole and is connected to the terminal block through a wire fixing clip.

[0013] Further, the current connector is connected to the power supply line for inputting current.

[0014] Further, the current connector is connected to the circuit board through a terminal connection member.

[0015] Further, the circuit board is connected to the cable through the terminal block.

[0016] Further, heat dissipation holes are provided on the wall surface of the first cavity away from the second cavity, and heat dissipation holes are provided on the surface of the upper housing.

[0017] Compared with the prior art, the above one or more technical solutions have the following beneficial effects:

[0018] 1. The interior of the power protection device is divided into two parts of cavities. The first cavity is used to accommodate the components for inputting current, and the second cavity is used to accommodate the components for outputting current, making both sides of the device as wiring spaces, and making the operation during on-site wiring more convenient and fast.

[0019] 2. The two parts of cavities form a T shape. The length of the first cavity is less than that of the second cavity. Since the current connectors at both ends of the first cavity are components protruding from the surfaces at both ends of the first cavity, the length dimension of this protruding part does not exceed the mounting brackets at both ends of the second cavity. When the entire device is fixed in the cabinet through the mounting brackets, more operating space can be provided for the wiring of the current connectors.

[0020] 3. The two parts of internal cavities are respectively used as the current input part, that is, the space for the terminal connection members corresponding to the current connectors, and the current output part, that is, the accommodating space for the terminal block to which the cable is connected after entering the device. The two parts of components are arranged separately, making the internal wiring more reasonable and conducive to subsequent expansion of more wiring quantities. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings forming a part of this specification are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0022] Figure 1 is a schematic internal structure diagram of the power protection device provided by the present invention;

[0023] Figure 2 is a schematic overall structure diagram of the power protection device provided by the present invention:

[0024] Figure 3 Schematic diagram of the lower housing structure of the power protection device provided by the present utility model:

[0025] Figure 4 Schematic diagram of the upper housing structure of the power protection device provided by the present utility model:

[0026] Figure 5 Schematic diagram of the structure for fixing wires in the power protection device provided by the present utility model.

[0027] In the figure: 1 lower housing, 2 upper housing, 3 housing positioning bracket, 4 mounting bracket, 5 wire pressing bracket, 6 wire fixing clip, 7 terminal connector, 8 current connector, 9 circuit board, 10 coil protector, 11 fastener. Specific embodiments

[0028] The present utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0029] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present utility model. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present utility model belongs.

[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present utility model. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0031] As introduced in the background art, the structure of the power protection device takes the circuit board and various components connected to the circuit board as the core components. Due to the modular structure design, the internal wiring space is limited.

[0032] Therefore, the following embodiments provide a power protection device, which is internally divided into two parts of cavities, respectively serving as the spaces for current input components and current output components. The two parts of the space form a T shape and are arranged separately, so that the wiring operation is carried out from both sides of the device and extra space is reserved for the incoming line operation.

[0033] As Figures 1 - 5 shown, a power protection device includes a lower housing 1 and an upper housing 2. After the two parts of the housing are connected, a T-shaped cavity is formed inside. The T-shaped cavity includes a first cavity and a second cavity.

[0034] In this embodiment, the power protection device has a lower housing 1 and an upper housing 2. After the two parts of the housing are assembled, a T-shaped structure is formed. It has a first cavity and a second cavity inside. The first cavity is adjacent to the second cavity and the two cavities are connected and communicate with each other. The length of the first cavity is less than that of the second cavity.

[0035] Both the lower housing 1 and the upper housing 2 are T-shaped. The two housings are connected by a buckle and locked by a fastener 11. The two ends of the lower housing 1 are connected to mounting brackets 4 for fixing the entire power protection device to a set position in the high-power DC power supply system. A housing positioning bracket 3 is provided on the upper housing 2 for positioning when the two housings are docked.

[0036] The inner surface of the lower housing 1 is connected to a circuit board 9. The lower bottom surface of the circuit board 9 is connected to an inductor and a lightning strike sensor, which play a lightning protection role when it thunders on a rainy day during the power supply process.

[0037] A terminal block and a terminal connector 7 are provided on the upper surface of the circuit board 9. The terminal block is located in the second cavity. Pressing brackets 5 are provided at both ends of the second cavity. Wire fixing clips 6 are provided on the pressing brackets 5. Through holes are provided at both ends of the lower housing. Coil protectors 10 are provided on the through holes. The cable passes through the through hole and is connected to the terminal block through the wire fixing clip 6. The coil protector 10 is used to protect the insulating outer skin of the cable from being scratched by the through hole. The wire fixing clip 6 is used to fix the cable to ensure that the cable will not be separated from the terminal block due to external forces.

[0038] The terminal connector 7 is located in the first cavity. Current connectors 8 are provided at both ends of the first cavity. The current connectors 8 are connected to the terminal connector 7.

[0039] Heat dissipation holes are provided on the wall surface of the first cavity away from the second cavity, and heat dissipation holes are provided on the surface of the upper housing 2.

[0040] In the above structure, the current connector 8 is used to connect the power supply line to realize current input. The input current is connected to the protection circuit on the circuit board 9 through the terminal connector 7. The current output by the protection circuit passes through the terminal block and is transmitted to the cable passing through the through hole and the coil protector 10. Among them, the current connector obtains current input by connecting to the circuit board through the terminal connector, and then the circuit board obtains current output by connecting to the terminal block. The protection circuit on the circuit board is a prior art, which is powered by the terminal connector and outputs current through the terminal block. When the protection circuit acts, it will cut off the current output by the terminal block.

[0041] In the above structure, the two parts of the cavity form a T shape. The first cavity is used to accommodate the components for inputting current, and the second cavity is used to accommodate the components for outputting current. The current connectors 8 at both ends of the first cavity are components protruding from the surfaces at both ends of the first cavity, and the length dimension of this protruding part does not exceed the mounting brackets 4 at both ends of the second cavity. When the entire device is fixed in the cabinet through the mounting brackets 4, it can provide sufficient space for wiring the current connectors.

[0042] The power protection device needs to be installed inside the cabinet. Since there are numerous components inside the cabinet, when the length dimension where the current connectors are located exceeds the surface of the mounting brackets, it is likely that the power protection device cannot be installed into the cabinet, and even the problem of insufficient reserved wiring space for the current connectors may occur. Therefore, in this solution, the power input line and the power output line inside the power protection device are divided into two cavities, forming a T-shaped structure to address the above problems of wiring space and installation space.

[0043] The interior is divided into two parts of cavities, which are respectively the space for the current input part, that is, the space for the terminal connectors corresponding to the current connectors, and the current output part, that is, the accommodation space for the terminal blocks connected after the cables enter the device. The two parts of components are arranged separately, making the internal wiring more reasonable and conducive to subsequent expansion of more wiring quantities.

[0044] The power input part is connected by terminal connectors, which is more convenient for on-site installation and wiring. The current output part adopts the method of inserting the terminal blocks into the cables, and can realize the access of two groups of 40 pairs of wiring terminals. When wiring, both the power input and the power output can be accessed on both sides of the housing, making the wiring of the operator more convenient and fast.

[0045] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A power supply protection device, characterized in that: It includes a lower shell and an upper shell. After the two parts of the shell are connected, a T-shaped cavity is formed inside. The T-shaped cavity includes a first cavity and a second cavity. The inner surface of the lower shell is connected to the circuit board. The upper surface of the circuit board is provided with a terminal row and a terminal connector. The terminal row is located in the second cavity, and the terminal connector is located in the first cavity. Current connectors are provided on the outside of both ends of the first cavity, and mounting brackets are provided on the outside of both ends of the second cavity.

2. A power supply protection device as claimed in claim 1, characterized in that: The first cavity is adjacent to the second cavity, the two cavities are connected, and the length of the first cavity is smaller than that of the second cavity.

3. A power protection device as claimed in claim 1, characterized in that: A wire crimping bracket is provided on the inner side of both ends of the second cavity, and a wire fixing card for fixing the cable is provided on the wire crimping bracket. Wire threading holes are provided at both ends of the lower shell body, and protective wire loops are provided on the wire threading holes.

4. A power protection device as claimed in claim 3, characterized in that: The cables are passed through the threading holes and connected to the terminal blocks via the wire fixing clips.

5. A power protection device as claimed in claim 1, characterized in that: A protection circuit is arranged on the circuit board.

6. A power supply protection device as claimed in claim 1, characterized in that: The lower bottom surface of the circuit board is connected with an inductor and a lightning strike tube sensor.

7. A power protection device as claimed in claim 1, characterized in that: The current connector is connected to the power line and is used for inputting current.

8. A power protection device as claimed in claim 1, characterized in that: The current connector is connected to the circuit board via a terminal connector.

9. A power protection device as claimed in claim 1, characterized in that: The circuit board is connected to the cable via a terminal row.

10. A power protection device as claimed in claim 1, characterized in that: A heat dissipation hole is arranged on a wall surface of the first cavity away from the second cavity, and a heat dissipation hole is arranged on a surface of the upper shell.

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