Direct-current emergency lighting power supply host cabinet
By arranging devices from top to bottom in the DC emergency lighting power main cabinet and setting an independent heat dissipation structure for each device, the problem of increasing complexity and heat dissipation of the rectifier module of the large-capacity DC emergency lighting power device in the prior art is solved, and good heat dissipation effect and high reliability are achieved.
Patent Information
- Application Number
- CN202421299560.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-07
- Publication Date
- 2025-05-06
- Estimated Expiration
- 2034-06-07
AI Technical Summary
The existing DC emergency lighting power supply devices have problems with increasing complexity and heat dissipation of rectifier modules in large capacity applications, resulting in poor structural compactness and heat dissipation effect.
A DC emergency lighting power main cabinet is designed. By arranging dual power switching devices, rectifier devices, charging devices, chopper devices and output devices from top to bottom in the cabinet, and an independent heat dissipation structure is set for each device, and heat dissipation air ducts and heat dissipation holes are used to directly discharge heat out of the cabinet.
It effectively avoids the thermal impact of high-heat generation devices on low-heat generation devices, improves the heat dissipation effect, extends the life and reliability of the device, and makes it suitable for DC emergency lighting power devices with a capacity of up to 60KW.
Smart Images
Figure CN222839291U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technology of fire emergency lighting power supply, in particular to a DC emergency lighting power supply main cabinet. Background Art
[0002] Emergency lighting power supply device is a kind of power supply product widely used in various industries, which provides fire emergency power supply for loads. The current market is mainly AC emergency lighting power supply devices, and DC lighting power supply devices are rare. For regular loads, AC emergency lighting power supply is directly supplied by the mains, while DC EPS is rectified by the rectifier module to rectify AC into DC, and then supply power to the load.
[0003] Compared with AC emergency lighting power supply, DC lighting power supply device not only adds rectifier module, making the cabinet more compact and more complex in structure, but also has higher requirements on the overall layout of the whole cabinet and the utilization rate of cabinet space. In addition, due to the power consumption of rectifier module itself, the heat generated by the cabinet increases, which puts higher requirements on the heat dissipation structure design. Utility Model Content
[0004] The utility model aims to provide a DC emergency lighting power supply main cabinet with reasonable structure and good heat dissipation effect.
[0005] The purpose of the utility model is achieved through the following technical scheme: a DC emergency lighting power supply main cabinet, including a cabinet, a dual power switching device, a rectifier device, a charging device, a chopper device and an output device arranged in the cabinet, characterized in that the dual power switching device, the rectifier device, the charging device, the chopper device and the output device are arranged in sequence from top to bottom in the cabinet, and the devices have independent heat dissipation structures, the heat dissipation structures are connected to the heat dissipation holes on the cabinet to directly discharge the heat emitted by the devices out of the cabinet.
[0006] Under natural conditions, heat is conducted from low places to high places. The utility model arranges the device with high heat generation at the top of the cabinet, the device with medium heat generation at the middle of the cabinet, and the device with the lowest heat generation at the bottom of the cabinet. In this way, the heat emitted by the device with high heat generation can be effectively prevented from affecting the device with low heat generation. The area where each device is located is a functional area. The functional areas of the utility model have reasonable zoning layout structures and do not affect each other. Moreover, the devices of the utility model have independent heat dissipation structures, which can directly discharge the heat emitted by each device out of the cabinet, with good heat dissipation effect, thereby improving the life and reliability of the DC lighting power supply device, so that the utility model can be applied to DC emergency lighting power supply devices with a capacity of up to 60KW, solving the problem that there is no large-capacity DC EPS on the market.
[0007] The heat dissipation structure of the utility model adopts a heat dissipation duct, and the tail end of each device is located in the front port of the corresponding heat dissipation duct. The rear port of the heat dissipation duct is connected to the rear door plate of the cabinet and communicates with the heat dissipation holes on the rear door plate.
[0008] The dual power supply switching device of the utility model is a dual power supply automatic switching switch.
[0009] The rectifier device of the utility model is composed of a high-frequency switching power supply rectifier circuit and a control system thereof.
[0010] The charging device of the utility model is composed of a high-frequency switching power supply rectification circuit and a charging and discharging control management system thereof.
[0011] The chopper device of the utility model is composed of a high-frequency switch chopper circuit and a control system thereof.
[0012] The output device of the utility model is composed of a rectifier output circuit contactor, a chopper circuit contactor, a battery direct supply circuit contactor, a total output switch, a bypass output switch and a contactor control circuit.
[0013] Compared with the prior art, the utility model has the following significant effects:
[0014] ⑴ The utility model arranges the device with high heat generation at the top of the cabinet, the device with medium heat generation at the middle of the cabinet, and the device with the lowest heat generation at the bottom of the cabinet. In this way, the heat emitted by the device with high heat generation can be effectively prevented from affecting the device with low heat generation. The area where each device is located is a functional area. The functional areas of the utility model have a reasonable layout structure and do not affect each other.
[0015] (2) Each device of the utility model has a mutually independent heat dissipation structure, which can discharge the heat emitted by each device directly out of the cabinet, with good heat dissipation effect, thereby improving the life and reliability of the DC lighting power supply device, making the utility model applicable to DC emergency lighting power supply devices with a capacity of up to 60KW, solving the problem that there is no large-capacity DC EPS on the market. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] The utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0017] Figure 1 This is the front view of the utility model (with the front door panel of the cabinet removed);
[0018] Figure 2 It is a side view of the utility model (with the side panel of the cabinet removed);
[0019] Figure 3 It is the front view of the utility model (the front door plate and the panel of the cabinet are removed).
[0020] In the figure: 1-cabinet, 2-dual power switching device, 3-rectifier device, 4-charging device, 5-chopper device, 6-output device, 7-first heat dissipation duct, 8-second heat dissipation duct. DETAILED DESCRIPTION
[0021] like Figures 1 to 3 As shown, a DC emergency lighting power supply main cabinet of the utility model includes a cabinet body 1, a dual power supply switching device 2 arranged in the cabinet body 1, a rectifier device 3, a charging device 4, a chopper device 5 and an output device 6. These devices are components of the existing DC lighting power supply device, are all existing devices, and the connection relationship between the devices is also the existing technology. Among them, the dual power switching device 2 is a dual power automatic switching switch (ATS), which is used to control the automatic switching of two mains; the rectifier device 3 is used to rectify AC power into DC power, and the rectifier device 3 is composed of a high-frequency switching power supply rectifier circuit and its control system; the charging device 4 is used to charge the battery, and the charging device 4 is composed of a high-frequency switching power supply rectifier circuit and its charge and discharge control management system; the chopper device 5 is used to convert the battery power into a stable output, and the chopper device 5 is composed of a high-frequency switching chopper circuit and its control system; the output device 6 is used to make correct switching of each output circuit, and the output device 6 is composed of a rectifier output circuit contactor, a chopper circuit contactor, a battery direct supply circuit contactor, a total output switch, a bypass output switch and a contactor control circuit, and the connection relationship between the various components of the output device 6 is the prior art.
[0022] The dual power switching device 2, the rectifier device 3, the charging device 4, the chopper device 5 and the output device 6 of the utility model are arranged in sequence from top to bottom in the cabinet 1, the device with high heat generation is arranged at the top of the cabinet, the device with medium heat generation is arranged in the middle of the cabinet, and the device with the lowest heat generation is arranged at the bottom of the cabinet. The utility model has a reasonable structural layout and can effectively prevent the heat emitted by the device with high heat generation from affecting the device with low heat generation.
[0023] Each device of the utility model has a heat dissipation structure that is independent of each other. The heat dissipation structure is connected to the heat dissipation holes on the cabinet 1 to directly discharge the heat dissipated by each device from the cabinet 1. In this embodiment, a heat dissipation structure is set for the rectifier device 3, the charging device 4 and the chopper device 5 with large heat generation. The heat dissipation structure adopts a first heat dissipation duct 7 and a second heat dissipation duct 8 of a rectangular cylinder, wherein the tail ends of the rectifier device 3 and the charging device 4 are jointly located in the front port of the first heat dissipation duct 7, and the rear port of the first heat dissipation duct 7 is connected to the cabinet rear door plate (not shown in the figure) and communicates with the heat dissipation holes on the rear door plate. The tail end of the chopper device 5 is located in the front port of the second heat dissipation duct 8, and the rear port of the second heat dissipation duct 8 is connected to the cabinet rear door plate (not shown in the figure) and communicates with the heat dissipation holes on the rear door plate. The cross-sectional area of the heat dissipation duct is slightly larger than the cross-sectional area of the corresponding device, which can maximize the guarantee that the hot air does not escape and is discharged from the cabinet body from the heat dissipation holes along the heat dissipation duct. The rectifier device 3, the charging device 4 and the chopper device 5 are all fixed by a panel. The front door panel of the cabinet 1 is provided with ventilation holes. Cold air enters from the ventilation holes of the front door panel and flows into each device through the panel. The heat of each device is discharged from the tail of the device by the built-in fan of the device, and then discharged from the heat dissipation holes of the rear door panel through the heat dissipation duct, that is, directly discharged out of the cabinet.
[0024] The implementation methods of the utility model are not limited to this. According to the above content of the utility model, in accordance with the common technical knowledge and customary means in the field, without departing from the above basic technical ideas of the utility model, the heat dissipation structure of the utility model also has other implementation methods. Therefore, the utility model can also make other various forms of modifications, replacements or changes, all of which fall within the scope of protection of the utility model.
Claims
1. A DC emergency lighting power supply main cabinet, comprising a cabinet, a dual power switching device, a rectifier device, a charging device, a chopper device and an output device arranged in the cabinet, characterized in that: The dual power switching device, the rectifier device, the charging device, the chopper device and the output device are arranged in sequence from top to bottom in the cabinet, and each device has a mutually independent heat dissipation structure, the heat dissipation structure is connected to the heat dissipation holes on the cabinet to directly discharge the heat emitted by each device out of the cabinet, the heat dissipation structure adopts a heat dissipation air duct, the tail end of each device is located in the front port of the corresponding heat dissipation air duct, and the rear port of the heat dissipation air duct is connected to the rear door panel of the cabinet and communicates with the heat dissipation holes on the rear door panel.
2. The DC emergency lighting power supply main cabinet according to claim 1 is characterized in that: The dual power switching device is a dual power automatic switching switch.
3. The DC emergency lighting power supply main cabinet according to claim 2 is characterized in that: The rectifier device is composed of a high-frequency switching power supply rectifier circuit and its control system.
4. The DC emergency lighting power supply main cabinet according to claim 3 is characterized in that: The charging device is composed of a high-frequency switching power supply rectification circuit and its charging and discharging control management system.
5. The DC emergency lighting power supply main cabinet according to claim 4 is characterized in that: The chopper device is composed of a high-frequency switching chopper circuit and a control system thereof.
6. The DC emergency lighting power supply main cabinet according to claim 5, characterized in that: The output device is composed of a rectifier output circuit contactor, a chopper circuit contactor, a battery direct supply circuit contactor, a total output switch, a bypass output switch and a contactor control circuit.