Independent power supply module

Abstract

The utility model belongs to the technical field of high-voltage power equipment, and particularly relates to an independent power supply module, which comprises a shell, a capacitor electricity taking unit, an energy conversion unit and an integrated protection unit, the shell is divided into a base and an umbrella skirt, and the energy conversion unit and the integrated protection unit are integrated in the same base. The capacitor electricity taking unit is fixedly installed in an inner cavity high-voltage area of the umbrella skirt, and the top structure is arranged to be in an umbrella skirt shape. When the device is used, the capacitor electricity taking unit, the energy conversion unit and the integrated protection unit are integrated in the same shell, the overall size is limited to be below 150 * 100 * 50 mm, the overall size of the device is reduced, meanwhile, the bolt holes are formed in the four corners of the bottom plate, the device is fixed through the bolt holes, the device can be directly embedded into a recloser body, and the recloser is convenient to use. The installation time is shortened, and the compact structure of the device is ensured.

Description

Technical Field

[0001] This utility model belongs to the field of high-voltage power equipment technology, specifically, it relates to an independent power supply module, and more particularly to a novel bistable recloser capacitor-type power supply module. Background Technology

[0002] A bistable recloser is an intelligent power device that combines the characteristics of a bistable switch with the function of a recloser. It has two stable operating states (opening / closing) and can execute a preset operation sequence after fault detection to realize the automatic protection of the distribution network.

[0003] Existing bistable recloser independent power supplies have the following drawbacks:

[0004] 1. Bulky structure: Traditional electromagnetic power generation devices require a core transformer and heat dissipation components, with an overall size ≥400×300×200mm, and require a special bracket for fixation during installation;

[0005] 2. Unstable power supply: The rectifier circuit and protection module are arranged separately, which causes the output voltage to fluctuate by more than ±15%. An external voltage regulator module is required to supply power to the controller. Utility Model Content

[0006] In view of the deficiencies in the existing technology, the purpose of this utility model is to provide an independent power supply module.

[0007] According to the present invention, an independent power module includes a housing, a capacitor power extraction unit, an energy conversion unit, and an integrated protection unit. The housing is divided into a base and a skirt. The energy conversion unit and the integrated protection unit are integrated in the same base. The capacitor power extraction unit is fixedly installed in the high-voltage area of ​​the inner cavity of the skirt. The top structure is set in the shape of a skirt. The overall size of the power module is ≤150×100×50mm.

[0008] In a preferred embodiment: the base adopts a double-cavity design, with the inner cavity of the base divided into an upper medium-pressure zone and a lower low-pressure zone.

[0009] In a preferred embodiment: the energy conversion unit is located in the medium-pressure zone, and the integrated protection unit is located in the low-pressure zone.

[0010] In a preferred embodiment: the radius of curvature of the umbrella skirt is ≥5mm.

[0011] In a preferred embodiment, the capacitor power supply unit, energy conversion unit, and integrated protection unit are modularly connected via plug-in terminals.

[0012] In a preferred embodiment: a base plate is fixedly installed at the bottom center of the base, and bolt holes are provided at the four corners of the base plate, so that the power module can be embedded in the main body.

[0013] In a preferred embodiment: the capacitor power supply unit consists of a high-voltage capacitor and a supplementary inductor forming a CL resonant circuit. The high-voltage capacitor is a ceramic capacitor with a withstand voltage of 10kV and a capacitance of 0.1μF±5%. The compensation inductor is made of iron-silicon-aluminum magnetic ring and has an inductance of 0.8mH±3%. The single-phase output power is ≥10W±10%.

[0014] In a preferred embodiment: the energy conversion unit is a high-frequency transformer, the core material is an Fe-based nanocrystalline alloy with a thickness ≤15mm, and the high-frequency transformer turns ratio range is 800:5 to 1200:5.

[0015] In a preferred embodiment: the integrated protection unit includes a rectifier and filter circuit and a multi-stage protection circuit. The rectifier and filter circuit uses a full-bridge rectifier and a π-type filter. The multi-stage protection circuit consists of a varistor, a positive temperature coefficient thermistor, and a transient voltage suppression diode.

[0016] In a preferred embodiment: the input / output terminals adopt a phosphor bronze spring pin contact design, which supports tool-free snap-fit ​​installation. The terminal spacing is set to 5.08mm±0.05mm, which conforms to IEC wiring standards. The contact resistance is ≤0.1Ω, the insertion and removal life is ≥5000 times, and the output end directly integrates 5V / 12V dual-channel regulated output (±1.5% accuracy), without the need for an external conversion module.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. When using this utility model, by integrating the capacitor power-taking unit, energy conversion unit and integrated protection unit into the same housing, the overall size is limited to less than 150×100×50mm, reducing the overall volume of the device. At the same time, bolt holes are provided at the four corners of the base plate, through which the device is fixed, and it can be directly embedded into the recloser body, reducing installation time and ensuring the compact structure of the device.

[0019] 2. When using this utility model, the input / output plug-in terminals are set with a spring-loaded pin contact design, which supports hot-swappable replacement. This ensures that damaged parts can be quickly replaced through plug-in during subsequent maintenance. The output terminal directly integrates 5V / 12V dual-channel regulated output (±1.5% accuracy) without the need for an external conversion module, thus meeting the controller's direct power supply requirements. Attached Figure Description

[0020] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1This is a schematic diagram of the mechanism of this utility model;

[0022] In the diagram: 1. Base plate; 2. Base; 3. Umbrella skirt; 4. Capacitor power supply unit; 5. Energy conversion unit; 6. Integrated protection unit. Detailed Implementation

[0023] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0024] like Figure 1 As shown, this utility model discloses an independent power module, including a housing, a capacitor power extraction unit 4, an energy conversion unit 5, and an integrated protection unit 6. The housing is divided into a base 2 and a skirt 3. The energy conversion unit 5 and the integrated protection unit 6 are integrated into the same base 2. The base 2 adopts a double-cavity design, with the inner cavity of the base 2 divided into an upper medium-voltage zone and a lower low-voltage zone. The energy conversion unit 5 is located in the medium-voltage zone, and the integrated protection unit 6 is located in the low-voltage zone. The capacitor power extraction unit 4 is fixedly installed in the high-voltage zone of the inner cavity of the skirt 3. The top structure is configured as an umbrella... The skirt 3, through physical deformation, achieves three functions in one: electric field optimization, heat dissipation enhancement, and environmental protection, which can improve the mean time between failures. The curvature radius of the skirt 3 is ≥5mm. The capacitor power supply unit 4, energy conversion unit 5, and integrated protection unit 6 are modularly connected through plug-in terminals. The base plate 1 is fixedly installed at the bottom center of the base 2. The overall size of the power supply is ≤150×100×50mm (L×W×H). Bolt holes are provided at the four corners of the base plate 1, and the device can be fixed through the bolt holes. It can be directly embedded into the main body and reduce the installation time.

[0025] The capacitor power supply unit 4 consists of a high-voltage capacitor and a supplementary inductor forming a CL resonant circuit. The high-voltage capacitor is a CT81 type ceramic capacitor with a withstand voltage of 10kV and a capacitance of 0.1μF±5%. The compensation inductor is made of iron-silicon-aluminum magnetic ring and has an inductance of 0.8mH±3%. The single-phase output power is ≥10W±10%.

[0026] Energy conversion unit 5 is a high-frequency transformer with a core material of Fe-based nanocrystalline alloy and a thickness of ≤15mm. The high-frequency transformer turns ratio ranges from 800:5 to 1200:5.

[0027] The integrated protection unit 6 includes a rectifier and filter circuit and a multi-stage protection circuit. The rectifier and filter circuit uses a full-bridge rectifier and a π-type filter. The multi-stage protection circuit consists of a V25B varistor, a 60R185 type positive temperature coefficient thermistor, and an SMBJ15CA type transient voltage suppression diode.

[0028] The input / output terminals adopt a phosphor bronze spring pin contact design, which supports tool-free snap-fit ​​installation. The terminal spacing is set to 5.08mm±0.05mm, which complies with IEC wiring standards. The contact resistance is ≤0.1Ω, the insertion and removal life is ≥5000 times, and the output end directly integrates 5V / 12V dual-channel regulated output (±1.5% accuracy), without the need for an external conversion module.

[0029] Working principle

[0030] When this utility model is used, by integrating the capacitor power extraction unit 4, the energy conversion unit 5 and the integrated protection unit 6 into the same housing, the overall size is limited to less than 150×100×50mm, reducing the overall volume of the device. At the same time, bolt holes are provided at the four corners of the base plate 1, and the device is fixed through the bolt holes. It can be directly embedded into the recloser body, reducing the installation time and ensuring the compact structure of the device.

[0031] The input / output terminals are designed with spring-loaded pins, supporting hot-swappable replacement. This ensures that damaged parts can be quickly replaced during subsequent maintenance via the plug-in method.

[0032] The output end directly integrates 5V / 12V dual-channel regulated output (±1.5% accuracy), eliminating the need for an external conversion module and thus meeting the controller's direct power supply requirements.

[0033] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0034] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. An independent power supply module, characterized in that, The power supply module includes a housing, a capacitor power extraction unit (4), an energy conversion unit (5), and an integrated protection unit (6). The housing is divided into a base (2) and a skirt (3). The energy conversion unit (5) and the integrated protection unit (6) are integrated in the same base (2). The capacitor power extraction unit 4 is fixedly installed in the high-voltage area of ​​the inner cavity of the skirt 3. The top structure is set in the shape of the skirt (3). The overall size of the power supply module is ≤150×100×50mm.

2. The independent power supply module according to claim 1, characterized in that, The base (2) adopts a double-cavity design, with the inner cavity of the base (2) divided into an upper medium-pressure zone and a lower low-pressure zone.

3. The independent power supply module according to claim 2, characterized in that, The energy conversion unit (5) is located in the medium-pressure zone, and the integrated protection unit (6) is located in the low-pressure zone.

4. The independent power supply module according to claim 1, characterized in that, The radius of curvature of the umbrella skirt (3) is ≥5mm.

5. The independent power supply module according to claim 1, characterized in that, The capacitor power extraction unit (4), energy conversion unit (5), and integrated protection unit (6) are modularly connected through plug-in terminals.

6. The independent power supply module according to claim 2, characterized in that, The base plate (1) is fixedly installed at the bottom center of the base (2). Bolt holes are provided at the four corners of the base plate (1), and the power module can be embedded in the main body.

7. The independent power supply module according to claim 1, characterized in that, The capacitor power supply unit (4) consists of a high-voltage capacitor and a supplementary inductor forming a CL resonant circuit. The high-voltage capacitor is a ceramic capacitor with a withstand voltage of 10kV and a capacitance of 0.1μF±5%. The compensation inductor is made of iron-silicon-aluminum magnetic ring and has an inductance of 0.8mH±3%. The single-phase output power is ≥10W±10%.

8. The independent power supply module according to claim 1, characterized in that, The energy conversion unit (5) is a high-frequency transformer with a core material of Fe-based nanocrystalline alloy and a thickness of ≤15mm. The high-frequency transformer turns ratio range is 800:5 to 1200:

5.

9. The independent power supply module according to claim 1, characterized in that, The integrated protection unit (6) includes a rectifier and filter circuit and a multi-stage protection circuit. The rectifier and filter circuit uses a full-bridge rectifier and a π-type filter. The multi-stage protection circuit consists of a varistor, a positive temperature coefficient thermistor, and a transient voltage suppression diode.

10. The independent power supply module according to claim 5, characterized in that, The input / output terminals adopt a phosphor bronze spring pin contact design, which supports tool-free snap-fit ​​installation. The terminal spacing is set to 5.08mm±0.05mm, which conforms to IEC wiring standards. The contact resistance is ≤0.1Ω, the insertion and removal life is ≥5000 times, and the output end directly integrates 5V / 12V dual-channel regulated output (±1.5% accuracy), without the need for an external conversion module.

Images